CN208803530U - Low pool emptying device for vcehicular tunnel fire-fighting - Google Patents

Abstract

The purpose of the utility model is to provide a kind of low pool emptying devices for vcehicular tunnel fire-fighting, including two fire pumps, the input end of two fire pumps passes through two water inlet pipes respectively and is connected to low pool, the outlet end of two fire pumps passes through two outlet pipes respectively and is connected to the first end of threeway and the first end of four-way, the second end of threeway and the second end of four-way pass through two water supplying pipes respectively and are connected to head-tank, the third end of threeway and the third end of four-way pass through communicating pipe intercommunication, 4th end of four-way is connected to nearby gully or gutter by blow-down pipe, the water supplying pipe connecting with the second end of four-way is equipped with 1# valve, the water supplying pipe connecting with the second end of threeway is equipped with 2# valve, 3# valve and 4# valve are respectively equipped on communicating pipe and blow-down pipe.The device is easy to operate, securely and reliably, reduces construction investment and blow-down pipe difficulty of construction, can rapid blow-down low pool.

Description

Low pool emptying device for vcehicular tunnel fire-fighting

Technical field

The utility model belongs to vcehicular tunnel fire-fighting domain, and in particular to a kind of low pool for vcehicular tunnel fire-fighting Emptying device.

Background technique

In vcehicular tunnel fire-fighting, it is used as and disappears frequently with fire hydrant, fixed aqueous film-forming foam extinguishing device and fire extinguisher Anti- system, wherein fire hydrant and fixed aqueous film-forming foam extinguishing device require water system water supply.Vcehicular tunnel disappears at present In anti-water system, frequently with low pool → fire pump → head-tank → tunnel fire-fighting equipment waterworks for firefighting, Low pool collects the required water of fire-fighting as reservoir, then is forced into head-tank by water pump, and head-tank is direct Into tunnel, fire-fighting system supplies water, wherein and pond craft piping generally comprises water inlet pipe, outlet pipe, overflow pipe and blow-down pipe, on Vcehicular tunnel waterworks for firefighting is stated to have the following problems: 1) after pond emptying starts, valve on blow-down pipe close difficulty compared with Greatly, emergent stopping pond emptying manipulation is more difficult, reservoir of the low pool as tunnel fire demand water, and emptying pond in this way has Biggish security against fire risk；2) blow-down pipe be typically mounted at pond water suction hole bottom, buried depth is larger, generally piece of smooth land absolute altitude with Lower 4~5m, difficulty of construction is larger and increases investment；3) it manages for convenience, it is attached that low pool is generally located on tunnel portal Closely, the blow-down pipe gradient for being connected to neighbouring gutter is smaller, and the blow-down pipe caliber of design is actually difficult to meet rapid blow-down pond Requirement.

Utility model content

The purpose of the utility model is to provide a kind of low pool emptying device for vcehicular tunnel fire-fighting, device behaviour Make simply, securely and reliably, to reduce construction investment and blow-down pipe difficulty of construction, it can rapid blow-down low pool.

The technical scheme adopted by the utility model is

A kind of low pool emptying device for vcehicular tunnel fire-fighting, including two fire pumps, two fire pumps Input end pass through two water inlet pipes respectively and be connected to low pool, the outlet end of two fire pumps passes through two water outlets respectively Pipe is connected to the first end of threeway and the first end of four-way, and the second end of threeway and the second end of four-way pass through two water supply respectively Pipe is connected to head-tank, and the third end of threeway and the third end of four-way are by communicating pipe intercommunication, and the 4th end of four-way is by putting Blank pipe is connected to nearby gully or gutter, water supplying pipe connect with the second end of four-way equipped with 1# valve, with threeway the The water supplying pipe of two ends connection is equipped with 2# valve, and 3# valve and 4# valve are respectively equipped on communicating pipe and blow-down pipe.

Preferably, two fire pumps and connected part water inlet pipe and outlet pipe are located in pump house, four-way, 1# valve Door, 3# valve and 4# valve are located in 1# operation well, and threeway and 2# valve are located in 2# operation well.

Further, 1# operates well and 2# operation well and the minimum level clear distance of pump house is not less than 1m.

Preferably, the caliber of outlet pipe, communicating pipe, blow-down pipe and water supplying pipe is DN100,1# valve, 2# valve, 3# valve The specification of door and 4# valve is DN100, and the interior diameter that 1# operates well is 1800mm, and the interior diameter that 2# operates well is 1500mm.

The beneficial effects of the utility model are:

Usually, 1# valve, 2# valve and 3# valve opening, 4# valve closure, two fire pumps stand ready as fire-fighting System water supply first closes 1# valve and 2# valve when needing to be vented low pool, keeps 3# valve opening, is then turned on 4# Valve then opens any one fire pump, can be vented low pool；The device can be stopped by closing fire pump Emptying, reduces the fire-fighting operations risks of vcehicular tunnel, easy to operate, securely and reliably；The device is put by fire pump suction Empty pond does not have depth requirements to blow-down pipe, and blow-down pipe can be with shallow embedding, e.g., and blow-down pipe can be identical as outlet pipe buried depth, reduces Construction investment and blow-down pipe difficulty of construction；The device aspirates emptying pond by fire pump, and blow-down pipe flow is not by landform Limitation, can rapid blow-down low pool.

Detailed description of the invention

Fig. 1 is the schematic diagram of the utility model embodiment.

In figure: 1- fire pump；2- outlet pipe；3- communicating pipe；4- blow-down pipe；5- four-way；6- threeway；7-1# valve；8- 2# valve；9-3# valve；10-4# valve；11-1# operates well；12-2# operates well；13- water supplying pipe；14- water inlet pipe.

Specific embodiment

The utility model is further described with reference to the accompanying drawings and examples.

As shown in Figure 1, a kind of low pool emptying device for vcehicular tunnel fire-fighting, including two fire pumps 1, two The input end of a fire pump 1 passes through two water inlet pipes 14 respectively and is connected to low pool, the outlet end point of two fire pumps 1 Not Tong Guo two outlet pipes 2 be connected to the first end of threeway 6 and the first end of four-way 5, the of the second end of threeway 6 and four-way 5 Two ends pass through two water supplying pipes 13 respectively and are connected to head-tank, and the third end of threeway 6 and the third end of four-way 5 pass through communicating pipe 4th end of 3 intercommunications, four-way 5 is connected to nearby gully or gutter, the confession connecting with the second end of four-way 5 by blow-down pipe 4 Water pipe 13 is equipped with 1# valve 7, and the water supplying pipe 13 connecting with the second end of threeway 6 is equipped with 2# valve 8, communicating pipe 3 and emptying 3# valve 9 and 4# valve 10 are respectively equipped on pipe 4.Usually, 1# valve 7,2# valve 8 and 3# valve 9 are opened, and 4# valve 10 closes It closes, two fire pumps 1, which stand ready, first closes 1# valve 7 and 2# when needing to be vented low pool for fire-fighting system water supply Valve 8 keeps 3# valve 9 to open, is then turned on 4# valve 10, then opens any one fire pump 1, can be vented low level Pond；The device can stop being vented by closing fire pump 1, reduce the fire-fighting operations risks of vcehicular tunnel, operation letter It is single, securely and reliably；The device does not have depth requirements to blow-down pipe 4, blow-down pipe 4 can be with by the suction emptying of fire pump 1 pond Shallow embedding, e.g., blow-down pipe 4 can be identical as 2 buried depth of outlet pipe, reduce construction investment and blow-down pipe difficulty of construction；The device is logical The suction emptying of fire pump 1 pond is crossed, 4 flow of blow-down pipe is not limited by landform, can rapid blow-down low pool.

As shown in Figure 1, in the present embodiment, two fire pumps 1 and connected part water inlet pipe 14 and outlet pipe 2 are located at In pump house, four-way 5,1# valve 7,3# valve 9 and 4# valve 10 are located in 1# operation well 11, and threeway 6 and 2# valve 8 are located at 2# It operates in well 12,1# operates well 11 and 2# operation well 12 and the minimum level clear distance of pump house is not less than 1m.Pump house, 1# operation Well 11 and 2# operation well 12 play the role of protection and electrical isolation.

Outlet pipe 2, communicating pipe 3, blow-down pipe 4 and water supplying pipe 13 caliber, 1# valve 7,2# valve 8,3# valve 9 and 4# valve The specification of door 10,1# operation well 11 and 2# operate the interior diameter of well 12 determine according to actual needs, in the present embodiment, outlet pipe 2, the caliber of communicating pipe 3, blow-down pipe 4 and water supplying pipe 13 are DN100,1# valve 7,2# valve 8,3# valve 9 and 4# valve 10 Specification be DN100, the interior diameter that 1# operates well 11 is 1800mm, and the interior diameter that 2# operates well 12 is 1500mm.

It should be understood that for those of ordinary skills, it can be modified or changed according to the above description, And all these modifications and variations all should belong to the protection scope of the appended claims for the utility model.

Claims (4)

1. a kind of low pool emptying device for vcehicular tunnel fire-fighting, it is characterised in that: including two fire pumps, two The input end of fire pump passes through two water inlet pipes respectively and is connected to low pool, and the outlet end of two fire pumps passes through respectively Two outlet pipes are connected to the first end of threeway and the first end of four-way, and the second end of threeway and the second end of four-way pass through respectively Two water supplying pipes are connected to head-tank, and the third end of the third end of threeway and four-way is by communicating pipe intercommunication, and the 4th of four-way the End is connected to nearby gully or gutter by blow-down pipe, and the water supplying pipe connecting with the second end of four-way is equipped with 1# valve, with The water supplying pipe of the second end connection of threeway is equipped with 2# valve, and 3# valve and 4# valve are respectively equipped on communicating pipe and blow-down pipe.

2. being used for the low pool emptying device of vcehicular tunnel fire-fighting as described in claim 1, it is characterised in that: two fire-fightings Water pump and connected part water inlet pipe and outlet pipe are located in pump house, and four-way, 1# valve, 3# valve and 4# valve are located at 1# behaviour Make in well, threeway and 2# valve are located in 2# operation well.

3. being used for the low pool emptying device of vcehicular tunnel fire-fighting as claimed in claim 2, it is characterised in that: 1# operates well It is not less than 1m with the 2# minimum level clear distance for operating well and pump house.

4. being used for the low pool emptying device of vcehicular tunnel fire-fighting as claimed in claim 2, it is characterised in that: outlet pipe, The caliber of communicating pipe, blow-down pipe and water supplying pipe are DN100,1# valve, 2# valve, 3# valve and 4# valve specification be The interior diameter that DN100,1# operate well is 1800mm, and the interior diameter that 2# operates well is 1500mm.