13306647218

Copper Tube Information

Company dynamics

brass overflow tube for standard dipwells

author:MF manufacturerstime:2022-03-10 23:51:48

one、Fire water pump

1、Fire water pump should be based on reliability、Installation site、Fire water source、Significant factors such as fire feed water design flow and direction of warning,Pump driver should be directly driven by electric or diesel engine,Fire water pump should not use a dual power drive water pump composed of a dual electric motor or a diesel engine.。

(brass overflow tube for standard dipwells)2、Fire water pump unit should be made of water pump、Drivers and dedicated control cabinets;A set of fire pumps can be composed of work pumps and spare pumps of the same fire feed water system。

3、Fire water pump manufacturers should provide a complete pump flow direction performance curve,And indicate traffic、Rigor、Wheavier、Power and efficiency parameters。

4、The minimum rated flow of a single fire pump should not be less than10L/s,The maximum rated traffic should not be greater than320L/s。

5、When the fire water pump is centrifuged,Pump type should be based on traffic、Rigor、Wheavier、Power and efficiency、Rotating speed、noise,And the comprehensive determination of environmental requirements in installation places。

brass overflow tube for standard dipwells

6、The selection and application of the fire pump should meet the following requirements:

1)The performance of the fire pump should meet the requirements of flow and pressure required for fire water supply systems.;

2)The power of the fire pump is charged to meet the requirements of any point of operation on the performance curve of the selected water pump flow direction.;

3)When using a motor driven fire pump,Should choose the motor dry installation of fire water pump;

(brass overflow tube for standard dipwells)4)Flow direction performance curve should have no hump、No turning point smooth curve,The pressure at zero is not exceeding design pressure.140%,And should not be less than design rated pressure120%;

(brass overflow tube for standard dipwells)5)When the flow is designed to design traffic150%Time,Its export pressure should not be lower than design pressure65%;

(brass overflow tube for standard dipwells)6)The sealing and materials of the pump shaft should meet the requirements of the fire water pump during low flow.;

7)Firefighting water pump type of fire water pump is consistent,And the working pump should not exceed3tower;

8)Multiple fire water pumps are connected in parallel,Effect of the nuclear flow overlapping on the exit pressure of fire pump。

(brass overflow tube for standard dipwells)7、The main material of the fire pump should meet the following requirements:

1)Water pump housing should be ductile iron;

2)Asypes should be bronze or stainless steel。

(brass overflow tube for standard dipwells)8、When using a diesel engine fire water pump, it should meet the following requirements.:

(brass overflow tube for standard dipwells)1)Diesel engine fire water pump should be compressed ignition diesel engine;

2)Rated power of diesel engine should be influenced by nuclear altitude and environmental temperature on diesel engine power;

3)Diesel engine fire water pump should have continuous performance performance,The test run time should not be less than24h;

4)The battery of the diesel engine fire pump should ensure that the fire pump is automatically enabled at any time.;

5)Diesel engine fire water supply supply tank should be determined according to the fire continuation time,And the smallest effective volume of the fuel tank should be pressed1.5L/kWConfigure,The fuel stored in the diesel fired water pump tank should not be less than50%Reserver。

9、Axial deep well pump is suitable for mounting in water well、Fire pool and other fire water sources,And should comply with the following regulations:

1)Axial deep well pump is mounted in a well,Its submerged depth should meet its reliable operational requirements,In the water pump flow150%Rated flow,Its minimum submerged depth should be that there is no less than the bottom water level line of the first pump impeller.3.2m,And altitude height increases every increase300m,The minimum submerged depth of the deep well pump should increase at least0.3m;

2)Axial deep well pump is installed in fire water sources such as fire pool,The first pump leaf bottom should be lower than the minimum effective water level line of the fire pool,And the submerged depth should be determined according to the hydraulic conditions,And meet the effective water source effective storage volume or effective water level can be utilized in the fire pool.;When the pump is rated125L/sTime,Determine the submerged depth according to the performance of the pump,And should meet the amount of water pump gas;

3)Water supply pipe and fire supply pipe network connection should comply with《Technical specifications for fire water supply and fire hydrant system》First5.1.13Section3Relevant regulations;

4)The valve setting of the axial deep well pump outlet pipe should meet the requirements of this specification5.1.13Section5、6Relevant regulations;

5)When the lowest water level of the firepool is lower than the centrifugal water pump outlet, the water source does not guarantee the centrifugal water pump,Axial deep well pump,And should be installed in the installation of wet deep pits to be installed in fire water sources such as fire pools.;

6)When the electric motor open pump is set,Rain-raising function;

7)Others should meet the current national standards《Outdoor water supply design specifications》GB50013Relevant regulations。

10、Fire water pump should be provided with a spare pump,Its performance should be consistent with the performance of the working pump,But except the following conditions:

(brass overflow tube for standard dipwells)1)In addition to building height50mOther buildings outdoor fire water supply water is less than equal to25L/sTime;

(brass overflow tube for standard dipwells)2)Indoor fire feed water design is less than equal10L/sTime。

(brass overflow tube for standard dipwells)11、A set of fire water pumps should set traffic and pressure testing in the fire pump room,And should comply with the following regulations:

1)The flow of single fire feed water pump is not greater than20L/s、Pressure is not greater than0.50MPaTime,Pump group should reserve flow meter and pressure gauge interface,Other pump groups should be set to set pump set flow and pressure testing device;

2)The measurement accuracy of the fire pump flow detecting device should be0.4class,Maximum range75%Should not be lower than the maximum fire pump, rated traffic175%;

3)The measurement accuracy of the fire pump pressure detecting device should be0.5class,Maximum range75%Should not be lower than the maximum fire feed pump rating165%;

4)Each fire water pump outlet should be setDN65Test pipe,Should be installedDN65Fire hydrant。

brass overflow tube for standard dipwells

12、Fire water pump water absorption should meet the following requirements:

1)Fire water pump should take self ilover water water;

(brass overflow tube for standard dipwells)2)The fire water pump is directly pumped from the municipal management network.,Decompression type backflow prevention device should be provided on fire pump outlet pipe;

3)When the water absorbent is not absorbed,Swirl prevention device should be provided at the water absorption。

13、Centrifugal fire water pump water pipe、Water pipe and valve, etc.,The following regulations should be met:

(brass overflow tube for standard dipwells)1)A set of fire water pumps,Water absorbing pipe should not be less than two,When one of them is damaged or overhaul,The remaining water absorbing pipe should still be able to design flow through all fire water water.;

2)Fire water pump water pipe arrangement should avoid forming airbags;

3)A set of fire water pumps should be set to two water supply pipes and fire-fighting cyclic pipe networks.,When one of the water pipe is maintained,The remaining water pipes should still serve all fire water supply design flows.;

4)The submerged depth of the water pump water pump should meet the requirements of the fire pump operating safety in the lowest water level.,The drowning depth of the water absorbing tube speaker in the minimum effective water level of the fire pool should be determined according to the water flow rate and hydraulic conditions of the water absorbing tube speaker.,But should not be less than600mm,When using a swirl prevention device,Submerged depth should not be less than200mm;

5)The water absorbing pipe of the fire pump should be provided with a stylus gate or a butterfly valve with self-locking device.,But when setting the dark rod valve, there should be open scale and mark;TubeDN300Time,Should set an electric valve;

6)Check valve should be set at the water pump、明 杆 gate valve;When using butterfly valve,Shooting device;TreatmentDN300Time,Should set an electric valve;

7)The diameter of the water pump water pump is less thanDN250Time,It is suitable for1.0m/s~1.2m/s;Diameter is greater thanDN250Time,Should be1.2m/s~1.6m/s;

8)The diameter of the fire water pump outlet is less thanDN250Time,It is suitable for1.5m/s~2.0m/s;Diameter is greater thanDN250Time,Should be2.0m/s~2.5m/s;

(brass overflow tube for standard dipwells)9)The arrangement of the absorbent well should meet the smooth flow of water.、Uniform flow rate、Do not produce vortex requirements,And should be convenient for installation;

10)Water absorbing pipe for fire pump、When the water pipe passes through the outer wall,Waterproof sleeve should be used;When passing through the wall and the floor,Should meet this specification12.3.19Section5Requirement;

(brass overflow tube for standard dipwells)11)When the water pump water pump is passed through the fire pool,Flexible casing should be used;When using a rigid waterproof casing, it should be on the water pump water pump.25Set flexible connector,And the pipe diameter should not be greater thanDN150。

(brass overflow tube for standard dipwells)14、When there are two fire water supply and allow the fire water pump to directly absorb water,The following regulations should be met:

1)Each municipal feed water should meet other water supply and other water necessary for fire-fighting water design flow and fire.;

2)The pressure of the water supply network from the fire is should not be less than the ground.0.10MPa;

3)The fireproof pump is calculated according to the lowest water pressure of the outdoor water pipe network.,And should take the working conditions of the fire pump with the highest water pressure of outdoor water。

15、Fire water pump water pipe can set the pipe filter,The overwater area of the pipe filter should be larger than the pipeline overwater area.4Multiplication,And the aperture should not be less than3mm。

16、Temporary high-pressure fire water supply system should take technical measures to prevent low flow of fire pumps from low flow rate。

17、Pressure gauge should be set on fire pump water pipe and water pipes,And should comply with the following regulations:

1)The maximum amount of fire-proof pumping pipe pressure gauge should not be lower than the rated working pressure of the water pump.2Multiplication,And should not be lower than1.60MPa;

(brass overflow tube for standard dipwells)2)Fire water pump water absorbing pipe should be set vacuum table、Pressure gauge or vacuum pressure gauge,The maximum amount of pressure gauge should be determined according to the specific situation of the project,But should not be lower than0.70MPa,The maximum number of vacuum tables is-0.10MPa;

3)The diameter of the pressure gauge should not be less than100mm,The diameter should be used without less than6mmPipeline and fire pump importer,And should set off the valve。

brass overflow tube for standard dipwells

two、High-level fire water tank

1、The effective volume of the high-level fire water tank of the temporary high-pressure fire water supply system should meet the requirements of the premium fire fire.,And should comply with the following regulations:

(brass overflow tube for standard dipwells)1)A class of high-level public buildings should not be less than36m3,But when the building is high100mShould not be less than50m3,When the building is high150mShould not be less than100m3;

2)Multi-storey public building、Class 2 high-level public buildings and a class of high-level residential buildings should not be less than18m3,When a class of residential buildings exceed100mShould not be less than36m3;

3)Class 2 high-rise residential should not be less than12m3;

(brass overflow tube for standard dipwells)4)Building height is greater than21mMulti-layer residential buildings should not be less than6m3;

5)Industrial building indoor fire water supply water design flow is less than or equal25L/sShould not be less than12m3,more than the25L/sShould not be less than18m3;

6)Total building area is greater than10000m2And less than30000m2The store building should not be less than36m3,Total building area is greater than30000m2The store should not be less than50m3,Be with this section1It should take a large value when the specified is inconsistent.。

2、The set position of the high-level fire water tank should be higher than the water extinguishing facilities.,And the lowest effective water level should meet the hydrostatic pressure of the most unfavorable point of water fire extinguishing facilities,And should comply with the following regulations:

1)Class of high-level civil public buildings should not be lower than0.10MPa,But when the building is high100mShould not be lower than0.15MPa;

(brass overflow tube for standard dipwells)2)High-rise residence、Second class high-level public building、Multi-level civil buildings should not be lower than0.07MPa,Multi-layer residential is not difficult to reduce;

(brass overflow tube for standard dipwells)3)Industrial buildings should not be lower than0.10MPa;

(brass overflow tube for standard dipwells)4)When the water supply capacity of the municipal water pipe network is satisfied with the maximum amount of water in the production life,Can still meet the fire flow and pressure required for the initial fire,Can be supplied directly from the municipal water supply system,And set a backflow prevention device at the water pipe,Automatic exhaust valve should be set at the highest level of the system;

5)Automatic water fire extinguishing system and other automatic water fire extinguishing systems should be determined according to the pressure of the nozzle fire extinguishing demand,But minimum should not be less than0.10MPa;

(brass overflow tube for standard dipwells)6)When the high-level fire water tank does not meet this article1~5Static pressure requirements,Stadage pump。

(brass overflow tube for standard dipwells)3、High-level fire water tank can be used with hot dip-dip galvanized steel sheets、RC、Stainless steel plate and other construction。

4、The setting of the high-level fire water tank should meet the following requirements:

1)When the high fire water tank is set in the roof open setting,Water tank、And the valve of the inlet and export pipe should take locks or valve boxes and other protective measures.;

2)Cold、The fire water tank in winter frozen area in cold, should be set in the fire water box,Other parts should be set in indoors,When setting up on the roof open setting,Safety measures such as antifreeze insulation should be taken;

3)High-level fire water tank and foundation should be firmly connected。

5、High-level fire water box should be well ventilated,No ice,When you must be set in cold、Non-heating room in winter icing area in cold,Anti-frozen measures should be taken,The ambient temperature or water temperature should not be lower than5℃。

(brass overflow tube for standard dipwells)6、The high-level fire water tank should meet the following requirements:

1)Effective volume of high-level fire water tank、Water、Drainage and water level should be in line with《Technical specifications for fire water supply and fire hydrant system》First4.3.8Strips and4.3.9Relevant regulations;

2)The lowest effective water level of the high-level fire tank should be determined according to the excessive depth of the flooding tube spun.,When using the water pipe flaletter, it should be in line with《Technical specifications for fire water supply and fire hydrant system》First5.1.13Section4Regulations;However, when using the prevention of a cyclone, it should be determined according to the product.,Should not be less than150mmProtection height;

3)Ventilation tube of fire water tank、The breathing tube should meet the requirements of this specification4.3.10Relevant regulations;

4)Net wall between the outer wall of the fire tank and the building body structure wall or other pool wall,Construction or assembly should be met,No pipeline,The net distance should not be less than0.7m;Installed on the side of the pipe,The net distance should not be less than1.0m,And the channel width between the outer wall of the pipe and the wall of the building is not less than0.6m,Have a tank top,The clearance of the top surface and the bottom of the building on the top of it should not be less than0.8m;

5)The pipe diameter of the water pipe should meet the fire water tank8hMetacity requirements,But the pipe diameter should not be less thanDN32,Inlet pipe should be provided with liquid level valve or floating ball valve;

(brass overflow tube for standard dipwells)6)The water supply should be accessed above the overflow water level,The lowest point of the water pipe is high and the height of the overflow edge should be equal to the water pipe diameter.,But minimum should not be less than25mm,Maximum150mm;

7)When the water pipe is drowning out,Measures to prevent backflow should be placed on the water pipe or set the siphon damaged hole and vacuum destroyer on the pipe.,The diameter of the siphon-destructive hole should not be less than the pipe diameter1/5,And should not be less than25mm。But when using a living water system to hydrating,Inlet pipe should not be submerged;

8)The diameter of the overflow tube should not be less than the diameter of the water pipe2Multiplication,And should not be less thanDN100,The trumpet diameter of the overflow tube should not be less than the diameter of the overflow tube.1.5Multiplication~2.5Multiplication;

9)The high-level fire tank export pipe diameter should meet the water supply requirements for fire water supply design flow.,And should not be less thanDN100;

10)High-level fire water tank water pipe should be located in the lowest water level of high fire water tank,And should be set to prevent fire-fighting water from entering the high-level fire tank;

11、High-level fire water tank、The water pipe should be provided with a valve with indicating the opening and closing device.。

brass overflow tube for standard dipwells

three、Regulators pump

(brass overflow tube for standard dipwells)1、Regulated pump should be used in centrifugal pump,And should comply with the following regulations:

1)Single-stage or monoclinating multi-stage centrifugal pump;

2)Materials for major components such as pump housings and impellers are suitable for stainless steel。

2、The design flow of the regulated pump should meet the following requirements:

1)The design flow of the regulated pump should not be less than the normal leakage and system automatic start traffic of the fire water supply system pipe network.;

2)The normal leak of the fire water supply system pipe network should be based on pipeline material、Interface form, etc.,When there is no pipe network leakage data,The design flow of the regulated pump should be used in the design of fire water.1%~3%count,And should not be less than1L/s;

3)The automatic starting flow of the alarm valve pressure switch in the fire water supply system should be determined according to the product.。

(brass overflow tube for standard dipwells)3、The design pressure of the regulated pump should meet the following requirements:

(brass overflow tube for standard dipwells)1)The design pressure of the regulated pump should meet the system automatic start and the requirements of the pipe network.;

2)The design pressure of the steady pump should keep the pressure at the system automatically start the pump pressure setting point, which is larger than the system setting automatic start pump pressure value when the system is required.,And the increase value is suitable0.07MPa~0.10MPa;

3)The design pressure of the regulated pump should maintain the pressure of the water extinguishing facility at the quasi-working state of the system, which is greater than the static water pressure of the location.,And the added value should not be less than0.15MPa。

4)Setting the temporary high-pressure fire water supply system for setting the steady pump should set technical measures to prevent frequent start and stop of regulating pumps,When using pressure jug,Its regulation volume should be based on the regulator pump.15Second-rate/hCalculate,But effective water storage capacity should not be less than150L。

(brass overflow tube for standard dipwells)5)Regulated pump water absorbent pipe should be set,Regulated pump outlet pipe should be set to set the muffler check valve and the light gate valve。

6)Regulatory pump should be provided with spare pump。

Four、Fire water pump adapter

1、The indoor fire hydrant water system in the following places should set the fire pump adapter.:

1)High-level civil architecture;

2)House with fire water、Other multi-storey civil buildings in more than five layers;

3)Civil defense project combined with underground buildings and warfare;

4)More than four layers of factory buildings and warehouses,And the highest layer20mFactory or warehouse;

5)Four floors of multi-storey automotive libraries and underground automotive libraries;

6)City Municipal Tunnel。

2、Automatic sprinkler system、Water spray fire extinguishing system、Foam fire extinguishing system and fixed fire fire fire system,Water pump adapter should be set。

(brass overflow tube for standard dipwells)3、The water supply flow of the fire pump adapter should be pressed according to each10L/s~15L/scalculate。The number of fireproof pump connector settings should be determined by the system design flow.,But when the calculation quantity exceeds3Hour,Can be appropriately reduced according to the reliability of water supply;The following fire water supply systems should be appropriately reduced:

1)Municipal water supply network2Road direct water supply high pressure fire water supply system;

2)High fire pool、Water tower2Road water supply high pressure fire water supply system。

(brass overflow tube for standard dipwells)4、Temporary high-pressure fire water supply system water supply water to multiple buildings,Fire water pump engaging instruments should be set in each monomer attachment。

5、Water supply pressure range of fire water pump adapter,The water supply flow and pressure should be determined according to the local fire truck。

6、Fire feed water is a vertical partition water supply,Partition within the water supply pressure of fire truck,Pump adapter should be provided separately;When the height of the building exceeds the height of the fire truck,Fire feed water should be placed on the equipment layer and so on to set the water absorbing and pressurized interface of the mobile pump or mobile pump relay water supply.。

7、Pump adapter should be located in the place where the fire truck is used outdoors,And the distance from the outdoor fire hydrant or fire pool should not be less than15m,Never greater than40m。

8、Wall fire water pump adapter installation high degree from ground0.7m;Door on the wall、window、hole、The net distance of the hole should not be less than2.0m,And should not be installed under the glass curtain wall;Installation of underground fire water pump engagement,The distance from the water port and the bottom cover should not be greater than0.4m,And should not be less than the radius of the well cover。

9、A permanent logo named card should be set at the pump joiner,And should indicate the water supply system、Water supply range and rated pressure。

brass overflow tube for standard dipwells

Fives、Fire water pump house

1、The lifting equipment in the fire water pump house should meet the following requirements:

1)The weight of the fire pump is less than0.5tTime,I should set a fixed hook or moving hanger;

2)The weight of the fire pump is0.5t~3tTime,Should set manual lifting equipment;

3)The weight of the fire pump is greater than3tTime,Electric lifting equipment should be set。

2、The arrangement of the fire pump unit should meet the following requirements:

1)Neighboring two units and packets between walls,When the motor is less than22kWTime,Not less than0.60m;When the motor capacity is not less than22kW,Not more than55kWTime,Not less than0.8m;When the motor capacity is greater than55kWAnd less than255kWTime,Not less than1.2m;When the motor capacity is greater than255kWTime,Not less than1.5m;

(brass overflow tube for standard dipwells)2)When the fire water pump is maintained,At least one side of the water pump unit width is set at the side of each unit0.5mChannel,And should ensure that the fire pump shaft and motor rotor can be dismantled during maintenance; 3)The main channel width of the fire water pump house should not be less than1.2m。

3、When using a diesel fire pump,The net supply between the unit should be in accordance with this specification5.5.2Strip specified value increase0.2m,But should not be less than1.2m。

4、When there is a centralized maintenance site in the fire water pump room,The area should be determined according to the dimension of the water pump or motor,And there should be a width around the surrounding0.7mChannel。Ground pump rooms should be used in space settings。Wet shaft pump house with deep well pump,Stack of pumped places should also be set。

5、Overhead water pipeline in the fire water pump house,Do not hinder the channel and cross the electrical equipment,When you must span,Measures to ensure smooth and protecting electrical equipment should be taken。

6、Separate fire water pump room floor layer floor to the house or ceiling, etc.,In addition to the conditions such as ventilation, etc.,And should meet the following requirements:

(brass overflow tube for standard dipwells)1)When using a fixed hook or moving hanger,It should not be less than3.0m;

2)When using a monorail crane,It should be maintained between the bottom of the lift and the top of the lifting.0.50mThe above net supply;

3)When using a truss crane,In response to this article2Outside the regulations,It should also increase the height of the crane installation and maintenance space.。

7、When using an axial flow deep well pump,Water pump room net high should be determined according to the requirements of lifting and maintenance of fire water pump,When height is too high,Short-specific products should be selected according to the length of the water pump drive shaft length product specifications.。

8、There should be at least one door that can carry the largest equipment in the fire water pump house.。

9、The design of the fire water pump room should be designed according to the specific situation.、Ventilation and drainage facilities,And should comply with the following regulations:

1)Cold、Warm temperature in winter ice-free area should not be lower than10℃,But when the no one should be less than5℃;

(brass overflow tube for standard dipwells)2)The ventilation of the fire water pump house should be pressed6Second-rate/hdesign;

3)Drainage facilities should be set in fire water pump houses。

10、The fire water pump should not be provided in the first floor of the room with anti-vibration or quiet requirement.、Next layer and adjacent position,Be a must,The following noise reduction and damping measures should be taken:

1)Fire water pump should be low noise water pump;

2)Fire water pump unit should be separated;

3)Vibration isolation device should be provided on fire pump water pipe and water pipe;

4)Fire water pump room pipe bracket and pipeline through wall and wear floor,Measures to prevent solid sounds should be taken;

5)Technical measures for sound absorbing sound absorption in fire pump houses。

(brass overflow tube for standard dipwells)11、Fire water pump outlet pipe should be calculated by stopping pump water hammer,And should be calculated according to the following formula,When calculating the resulting water hammer pressure value exceeds the pipe test pressure value,Technical measures to eliminate pump water hammers should be taken。The pump water hammer elimination device should be installed on the water supply of fire pump,And other suitable locations in the fire water supply system:

12、The fire water pump house should meet the following requirements:

1)Independently constructed fire water pump house refresher than secondary,Fire protection distance from other buildings that produce fire exposure should be determined according to calculation,But should not be less than15m,Petrochemical companies should also meet the current national standards《Petrochemical enterprise design fire protection standard》GB50160Relevant regulations;

2)Fire water pump houses with a building,The fire resistance should be used is not less than2.0hPartition wall and1.50hFloorlate is separated from other parts,Its evacuation door should be close to the safe exit,And should set up a lead fire door;

3)Fire water pump houses with a building,When set to the first layer,Its export should pass through the outdoor;When set in the basement or other floor,Its export should pass through safe export。

(brass overflow tube for standard dipwells)13、When using diesel off-water pump, you should be equipped with separate fire water pump rooms.,And should set ventilation to meet the operation of diesel engine、Smoke and firefire facilities。

14、Fire water pump houses should take technical measures that are not flooded by water。

15、The earthquake resistance of the independent fire water pump house should meet local earthquake requirements,And should be improved in accordance with the earthquake resistance of the region1Take seismic measures,But should not be made to improve the earthquake-resistant calculation,And should comply with the current national standard《Seismic design specifications for outdoor water drainage and gas thermal engineering》GB50032Relevant regulations。

16、Safety protection measures should be taken by fire pumps and control cabinets。