CN219878977U - Premixing type compressed air foam fire extinguishing device for comprehensive pipe rack - Google Patents
Premixing type compressed air foam fire extinguishing device for comprehensive pipe rack Download PDFInfo
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- CN219878977U CN219878977U CN202320436595.XU CN202320436595U CN219878977U CN 219878977 U CN219878977 U CN 219878977U CN 202320436595 U CN202320436595 U CN 202320436595U CN 219878977 U CN219878977 U CN 219878977U
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- gas
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- 239000006260 foam Substances 0.000 title claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 57
- 239000007921 spray Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims 1
- 238000005507 spraying Methods 0.000 abstract description 2
- 239000007791 liquid phase Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model discloses a premixed compressed air foam fire extinguishing device for a comprehensive pipe gallery, and relates to the technical field of fire-fighting equipment, comprising a cabinet body and a pipe network; the cabinet body is internally provided with a high-pressure air cylinder, a foam mixed liquid tank, an air branching unit and an air-liquid mixed tank; the outlet of the high-pressure air cylinder is provided with an electromagnetic valve and a second pressure gauge and is connected with the total air inlet of the air splitter; the foam mixed liquid tank is provided with a driving gas inlet connected with a first outlet of the gas branching device, and a liquid outlet of the pressure one-way valve is arranged; the gas-liquid mixing tank is provided with a first one-way valve, an air inlet connected with a second outlet of the gas branching device, a second one-way valve, a liquid inlet connected with a liquid outlet of the foam mixing tank and an outlet connected with an inlet of the pipe network. The device is installed in the utility tunnel power cable cabin or the cable tunnel and is used for extinguishing fire, and the fire extinguishing efficiency is greatly improved by rapidly spraying compressed air foam extinguishing agent containing a large amount of gas-liquid phases.
Description
Technical Field
The utility model relates to the technical field of fire-fighting equipment, in particular to a premixed compressed air foam fire-extinguishing device for a comprehensive pipe rack.
Background
At present, for the cable fire protection of city utility tunnel, mainly there are two modes: firstly, arranging a high-pressure water mist fire extinguishing system or arranging a suspension type fire extinguishing device (such as a dry powder fire extinguishing device, a gas fire extinguishing device, an aerosol fire extinguishing device and the like) on the whole line of a pipe gallery; secondly, the suspension fire extinguishing device is arranged for carrying out important protection on areas with higher fire hazard risks such as cable joints or cable joint concentrated areas. However, the existing fire extinguishing device has the problems of poor fire extinguishing performance, large installation occupied area, high engineering cost and the like. The compressed air foam developed in recent years has the characteristics of uniform and fine foam structure, high foam stability, strong fire extinguishing capability and high efficiency, can rapidly and effectively extinguish fire under complex conditions such as A-class fire, B-class fire, AB-class mixed fire, three-dimensional shielding fire and the like, has good heat insulation protection performance and anti-afterburning performance, and is a subject to be considered at present, how to improve the fire extinguishing efficiency of the compressed air foam in the utility tunnel through structural design.
Disclosure of Invention
The utility model aims to provide a premixed compressed air foam fire extinguishing device for a utility tunnel, which can effectively solve the problems.
In order to alleviate the problems, the technical scheme adopted by the utility model is as follows:
the utility model provides a premixed compressed air foam fire extinguishing device for a comprehensive pipe gallery, which comprises a cabinet body and a pipe network; the pipe network is provided with an inlet and a plurality of outlets, and each outlet is provided with a spray head group for facing the cable joint part in the comprehensive pipe rack; the cabinet body is internally provided with a high-pressure air cylinder, a foam mixed liquid tank, an air branching unit and an air-liquid mixed tank; the gas branching unit is provided with a total gas inlet, a first outlet and a second outlet; an outlet of the high-pressure air bottle is provided with an electromagnetic valve and a second pressure gauge, and an outlet of the electromagnetic valve is connected with a total air inlet of the air branching device; the top of the foam mixed liquid tank is provided with a pressure detection port provided with a first pressure gauge, a foam mixed liquid filling port with a sealing cover, a driving gas inlet connected with a first outlet of the gas branching device, and the bottom of the foam mixed liquid tank is provided with a liquid outlet provided with a pressure one-way valve; the gas-liquid mixing tank is provided with a first one-way valve, an air inlet connected with a second outlet of the gas branching device, a liquid inlet connected with a liquid outlet of the foam mixing tank and an outlet connected with an inlet of the pipe network.
In a preferred embodiment of the utility model, a transparent observation window is arranged on the cabinet door of the cabinet body, and the transparent observation window is opposite to the first pressure gauge and the second pressure gauge.
Compared with the prior art, the utility model has the beneficial effects that:
when the device is installed on the utility tunnel and used for extinguishing fire, compressed air in the high-pressure air bottle is divided into two paths through the air branching device, one path is used as driving air to press foam mixed liquid in the foam mixed liquid tank to the air-liquid mixing tank through the pressure one-way valve, the other path is used as a mixed medium to directly reach the air-liquid mixing tank, and the air-liquid mixing tank is mixed with the foam mixed liquid to generate stable compressed air foam with a homogeneous micro-hexagonal structure, and then the compressed air foam enters a pipe network and is sprayed out through a spray head group, so that the fire extinguishing efficiency is greatly improved.
In order to make the above objects, features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of a cabinet type compressed air foam fire extinguishing apparatus according to the present utility model;
FIG. 2 is a schematic view of the appearance of the cabinet according to the present utility model;
FIG. 3 is a schematic illustration of the application of the cabinet type compressed air foam fire extinguishing apparatus of the present utility model;
in the figure: the fire-fighting equipment comprises a 1-cabinet body, a 2-foam mixed liquid tank, a 3-first pressure gauge, a 4-foam mixed liquid filling port, a 5-driving gas inlet, a 6-pressure one-way valve, a 7-first one-way valve, an 8-second one-way valve, a 9-gas-liquid mixing tank, a 10-pipe network, a 11-high-pressure air bottle, a 12-second pressure gauge, a 13-electromagnetic valve, a 14-gas splitter, a 15-transparent observation window, a 16-cabinet type compressed air foam fire-fighting device, a 17-spray head group, a 18-comprehensive pipe gallery and a 19-cable joint.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model.
Referring to fig. 1 and 3, the present utility model provides a cabinet type compressed air foam fire extinguishing apparatus for a utility tunnel 18, comprising a cabinet body 1 and a pipe network 10.
The pipe network 10 is provided with an inlet and a number of outlets, and each outlet is provided with a spray head group 17.
The cabinet body 1 is internally provided with a high-pressure air cylinder 11, a foam mixed liquid tank 2, an air shunt 14 and an air-liquid mixed tank 9.
The gas splitter 14 is provided with a total gas inlet, a first outlet and a second outlet.
The outlet of the high-pressure air cylinder 11 is provided with a solenoid valve 13 and a second pressure gauge 12, and the outlet of the solenoid valve 13 is connected to the total air inlet of the air splitter 14.
The top of the foam mixed liquid tank 2 is provided with a pressure detection port provided with a first pressure gauge 3, a foam mixed liquid filling port 4 with a sealing cover, a driving gas inlet 5 connected with a first outlet of the gas branching device 14, and the bottom is provided with a liquid outlet provided with a pressure one-way valve 6. The sealing cover is opened, and new foam mixed liquid can be injected into the foam mixed liquid tank 2 through the foam mixed liquid filling opening 4.
The gas-liquid mixing tank 9 is provided with an air inlet which is provided with a first one-way valve 7 and is connected with a second outlet of the gas branching device 14, a liquid inlet which is provided with a second one-way valve 8 and is connected with a liquid outlet of the foam mixing tank 2, and an outlet which is connected with an inlet of the pipe network 10.
As shown in fig. 3, the cabinet type compressed air foam fire extinguishing device 16 is directly installed on the utility tunnel 18 when in use, the pipe network 10 is fixed on the top of the utility tunnel 18 through clamping, and each spray head group 17 is correspondingly directed to each cable joint part 19 in the utility tunnel 18 one by one. The prior fire control system comprises a fire detector, a fire alarm controller and a fire control linkage controller, wherein the fire control linkage controller is connected with an electromagnetic valve 13 of a fire extinguishing device in a signal mode, and the electromagnetic valve 13 on a high-pressure air cylinder 11 is connected with the fire control linkage controller in a signal mode when the fire extinguishing device is used.
When a fire disaster occurs, the fire alarm controller receives fire signals detected by the fire detector and outputs linkage signals through the fire-fighting linkage controller, so that the electromagnetic valve 13 acts to start the fire extinguishing device, air in the high-pressure air cylinder 11 is divided into two paths through the air branching device 14, one path serves as driving gas to press foam mixed liquid in the foam mixed liquid tank 2 to the air-liquid mixing tank 9 through the pressure one-way valve 6, the other path serves as a mixed medium to be directly mixed with the foam mixed liquid to the air-liquid mixing tank 9, and then the fire extinguishing medium is sprayed out through the spray head group 17 through the inlet pipe, so that the aim of spraying a large amount of fire extinguishing agent in a foam form in a short time is fulfilled, and the fire extinguishing efficiency is greatly improved.
As shown in FIG. 3, the nozzle block 17 is mounted on top of the utility tunnel 18. For the case that the cable joint is installed in the cable explosion-proof box, the spray head group 17 can be selectively installed outside the cable explosion-proof box and also can be arranged in the cable explosion-proof box.
In the utility model, the gas from the high-pressure air cylinder 11 is divided into two paths by the gas splitter 14, the flow ratio of the two paths of gas can be reasonably distributed, and the gas-liquid ratio (the flow ratio of compressed air flow to foam mixed liquid) in the final gas-liquid mixing tank 9 can meet the fire extinguishing requirement of the fire extinguishing agent, and the general gas-liquid ratio is 6-10: 1.
in an alternative embodiment of the utility model, as shown in fig. 2, the cabinet door of the cabinet 1 is provided with a transparent viewing window 15, and the transparent viewing window 15 faces the first pressure gauge 3 and the second pressure gauge 12.
When the utility tunnel 18 looks over, the staff can directly pass through transparent observation window 15, observes the numerical value of second manometer 12, then judges whether the atmospheric pressure in the high-pressure air bottle 11 is suitable, whether needs the air supplement, observes the numerical value of first manometer 3, then judges whether the pressure in the foam mixed liquid jar 2 is suitable, whether needs to pour into new foam mixed liquid into foam mixed liquid jar 2.
In an alternative embodiment of the present utility model, each spray head group 17 includes two spray heads.
In an alternative embodiment of the utility model, the total length of the piping network 10 does not exceed 20m.
In an alternative embodiment of the present utility model, there are no more than six sprinkler groups 17 of pipe network 10.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (2)
1. A premixing type compressed air foam fire extinguishing device for a utility tunnel is characterized by comprising a cabinet body and a pipe network; the pipe network is provided with an inlet and a plurality of outlets, and each outlet is provided with a spray head group for facing the cable joint part in the comprehensive pipe rack;
the cabinet body is internally provided with a high-pressure air cylinder, a foam mixed liquid tank, an air branching unit and an air-liquid mixed tank;
the gas branching unit is provided with a total gas inlet, a first outlet and a second outlet;
an outlet of the high-pressure air bottle is provided with an electromagnetic valve and a second pressure gauge, and an outlet of the electromagnetic valve is connected with a total air inlet of the air branching device;
the top of the foam mixed liquid tank is provided with a pressure detection port provided with a first pressure gauge, a foam mixed liquid filling port with a sealing cover, a driving gas inlet connected with a first outlet of the gas branching device, and the bottom of the foam mixed liquid tank is provided with a liquid outlet provided with a pressure one-way valve; the gas-liquid mixing tank is provided with a gas inlet which is provided with a first one-way valve and is connected with a second outlet of the gas branching device, a liquid inlet which is provided with a second one-way valve and is connected with a liquid outlet of the foam mixing tank, and an outlet which is connected with an inlet of the pipe network;
a transparent observation window is arranged on a cabinet door of the cabinet body, and the transparent observation window is opposite to the first pressure gauge and the second pressure gauge;
each spray head group comprises two spray heads;
the pipe network is provided with a clamp which is detachably arranged at the top of the utility tunnel;
the total pipeline length of the pipe network is not more than 20m.
2. The premix compressed air foam fire suppression apparatus for utility tunnel of claim 1, wherein the nozzle group of the pipe network is no more than six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320436595.XU CN219878977U (en) | 2023-03-09 | 2023-03-09 | Premixing type compressed air foam fire extinguishing device for comprehensive pipe rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320436595.XU CN219878977U (en) | 2023-03-09 | 2023-03-09 | Premixing type compressed air foam fire extinguishing device for comprehensive pipe rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219878977U true CN219878977U (en) | 2023-10-24 |
Family
ID=88399331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320436595.XU Active CN219878977U (en) | 2023-03-09 | 2023-03-09 | Premixing type compressed air foam fire extinguishing device for comprehensive pipe rack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219878977U (en) |
-
2023
- 2023-03-09 CN CN202320436595.XU patent/CN219878977U/en active Active
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