CN218516029U - Passive automatic fire extinguishing device for underground pipe network system - Google Patents
Passive automatic fire extinguishing device for underground pipe network system Download PDFInfo
- Publication number
- CN218516029U CN218516029U CN202222542913.9U CN202222542913U CN218516029U CN 218516029 U CN218516029 U CN 218516029U CN 202222542913 U CN202222542913 U CN 202222542913U CN 218516029 U CN218516029 U CN 218516029U
- Authority
- CN
- China
- Prior art keywords
- fire extinguishing
- pipe network
- underground pipe
- branch pipe
- automatic fire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model discloses a passive automatic fire extinguishing device for underground pipe network system, including setting up the jar body in gaseous main website department of putting out a fire, the export of jar body and the person in charge intercommunication, the person in charge lays in the pipeline of underground pipe network, evenly is provided with the branch pipe on the person in charge, is provided with memory alloy valve subassembly on the branch pipe, and memory alloy valve subassembly opens when high temperature, closes when the normal atmospheric temperature, adopts passive control's mode to replace electric control's mode, does not need to arrange the circuit of automatic fire extinguishing device on underground pipe network, has saved the construction cost, need not electric power maintenance in service, has reduced the running cost; the automatic fire extinguishing device can not normally operate due to circuit damage when a fire occurs, the branch pipe is automatically opened to release fire extinguishing gas at high temperature through the memory alloy valve assembly, fire is extinguished in the pipeline, and the safety of a power supply line and the normal power consumption of residents are guaranteed.
Description
Technical Field
The utility model relates to an automatic fire prevention technical field of underground pipe network circuit specifically is a passive automatic fire extinguishing device for underground pipe network system.
Background
The urban underground pipe network system refers to pipelines and auxiliary facilities for water supply, drainage, gas, heat, electric power, communication, radio and television, industry and the like in the urban range. The underground pipe network for power transmission is a high-occurrence area of fire, the main factor possibly causing the fire is the fault of a power cable, and the fire of the power cable is mainly caused by the following reasons: and (3) cable breakage: if the cable is aged or the joint is damaged to cause insulation damage, the phenomenon of short-circuit discharge can occur, so that the local temperature of the cable is increased to cause fire; poor contact: if two cables at the cable joint are not tightly connected, the local contact at the joint is poor, the resistance is increased, and the joint is overheated to explode and burn; line overload: when the transmission line is overloaded due to external reasons, the temperature of the cable may rise due to the fact that the current intensity passing through the cable is greater than the allowable current intensity, and when the temperature reaches a certain value, the cable is ignited.
Conventional automatic fire extinguishing devices usually adopt an electric automatic fire extinguishing device, detect whether a fire occurs through a detection element, and release fire extinguishing materials through other electric control elements. Circuits and electric devices need to be arranged in an underground pipe network, so that the use cost is high, and the detection and the release of fire extinguishing materials can be maintained only by consuming electric power; meanwhile, when the fire is serious, the circuit of the electric automatic fire extinguishing device can be damaged, so that the electric automatic fire extinguishing device cannot normally detect the fire and automatically release fire extinguishing materials, the automatic fire extinguishing device fails, and further the fire cannot be extinguished, so that greater loss is caused. Therefore, we propose a passive automatic fire extinguishing device for underground pipe network systems.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is overcome current defect, the utility model provides a passive automatic fire extinguishing device for underground pipe network system, the mode that adopts passive control has replaced electrical control's mode, need not arrange automatic fire extinguishing device's circuit on underground pipe network, construction cost has been saved, need not electric power in service and maintain, the running cost is reduced, can not lead to the unable normal operating of automatic fire extinguishing device because of the circuit damage when taking place the condition of a fire yet, the safety of power supply line and resident's normal power consumption have been guaranteed, can effectively solve the problem in the background art.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a passive automatic fire extinguishing device for underground pipe network system, is including setting up the jar body in gaseous main website department of putting out a fire, the export of jar body with be responsible for the intercommunication, be responsible for and lay in underground pipe network's pipeline, be responsible for and evenly be provided with the branch pipe on, be provided with memory alloy valve module on the branch pipe, memory alloy valve module opens when high temperature, closes when the normal atmospheric temperature.
As a preferred technical scheme of the utility model, the memory alloy valve subassembly includes the fly leaf, sealing plug and the memory spring that set up in the branch pipe inboard, and the branch pipe is inside including the gaseous passageway of putting out a fire and movable passage, and the gaseous passageway of putting out a fire communicates with the inside of being responsible for, and the fly leaf slides along the axle of branch pipe in the movable passage and sets up from top to bottom, and the inboard surface of movable passage is fixed and is provided with the retaining ring that is used for spacing the fly leaf, and the internal diameter of movable passage is greater than the internal diameter of gaseous passageway of putting out a fire; the sealing plug is fixedly arranged on the upper surface of the movable plate, the memory springs are uniformly arranged on the edge of the upper surface of the movable plate, and the top ends of the memory springs are fixedly connected with the top surface of the inner side of the movable channel.
As a preferred technical scheme of the utility model, the outside fixed surface of branch pipe is provided with the heat conduction ring, and the heat conduction ring setting is in the department of corresponding with the movable channel.
As an optimized technical scheme of the utility model, be provided with air-entrapping pipe and barometer on the jar body respectively.
As an optimal technical scheme of the utility model, be provided with baroceptor on the jar body.
As an optimized technical proposal of the utility model, the main pipe is provided with a one-way valve, so that the fire extinguishing gas in the main pipe can only enter the branch pipe from the tank body.
Compared with the prior art, the beneficial effects of the utility model are that: the passive control mode is adopted to replace the electric control mode, and a circuit of an automatic fire extinguishing device is not required to be arranged on the underground pipe network, so that the construction cost is saved, electric power maintenance is not required during operation, and the operation cost is reduced; the automatic fire extinguishing device can not normally operate due to circuit damage when a fire occurs, the branch pipe is automatically opened to release fire extinguishing gas at high temperature through the memory alloy valve assembly, fire is extinguished in the pipeline, and the safety of a power supply line and the normal power consumption of residents are guaranteed.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the stand-by state of the branch pipe of the present invention;
fig. 3 is a schematic structural view of the working state of the branch pipe of the present invention.
In the figure: 1 tank body, 2 barometers, 3 baroceptors, 4 gas pipes, 5 main pipes, 6 one-way valves, 7 branch pipes, 8 heat conducting rings, 9 movable plates, 10 movable channels, 11 retaining rings, 12 sealing plugs, 13 memory springs and 14 fire extinguishing gas channels.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a passive automatic fire extinguishing device for an underground pipe network system comprises a tank body 1 arranged at a fire extinguishing gas main station, wherein the volume of the tank body 1 is 1.0-2.0 m, fire extinguishing gas such as heptafluoropropane, mixed gas IG541, carbon dioxide, inert gas and the like is filled in the tank body, preferably the mixed gas IG541 which is composed of three gases including 52% of nitrogen, 40% of argon and 8% of carbon dioxide is colorless, tasteless, nontoxic and nonconductive gas, and can be applied to fire extinguishing of E-type electrical equipment.
The outlet of the tank body 1 is communicated with a main pipe 5, the main pipe 5 is laid in a pipeline of an underground pipe network, the length of the main pipe 5 is designed according to the length of a corresponding road section of the underground pipe network, in order to ensure the air pressure stability and the fire extinguishing effect, the total length of the main pipe is not more than 300m, and the pipe diameter is 30x5;
the length of the branch pipe 7 is 240-350mm, and the pipe diameter is 20x3;
the memory alloy valve assembly is arranged on the branch pipe 7, the memory alloy valve assembly is opened at high temperature and closed at normal temperature, the branch pipe 7 is automatically opened at high temperature through the memory alloy valve assembly to release fire extinguishing gas, fire is extinguished in the pipeline, and the safety of a power supply line and the normal electricity consumption of residents are guaranteed.
Specifically, the branch pipe 7 comprises a fire extinguishing gas channel 14 and a movable channel 10 inside, the fire extinguishing gas channel 14 is communicated with the inside of the main pipe 5, the inner diameter of the part, connected with the fire extinguishing gas channel 14, of the movable channel 10 is larger than that of the fire extinguishing gas channel 14, a retaining ring 11 is arranged on the part, not communicated with the fire extinguishing gas channel 14, of the movable channel, and the inner diameter of the retaining ring 11 is the same as that of the fire extinguishing gas channel 14 or smaller than that of the fire extinguishing gas channel 14;
the memory alloy valve assembly comprises a movable plate 9, a sealing plug 12 and a memory spring 13 which are arranged on the inner side of the branch pipe 7, the movable plate 9 is arranged in the movable channel 10 in a vertically sliding mode along the axial direction of the branch pipe 7, and a retaining ring 11 is used for limiting the movable plate 9 and enabling the movable plate 9 to only slide vertically in the movable channel 10;
the sealing plug 12 is fixedly arranged on the upper surface of the movable plate 9, the sealing plug 12 is blocked in the fire extinguishing gas passage 14 when the memory alloy valve assembly is closed, the movable plate 9 drives the sealing plug 12 to be separated from the fire extinguishing gas passage 14 when sliding downwards, so that the fire extinguishing gas passage 14 is communicated with the movable passage 10, the branch pipe 7 is opened, and the mixed gas IG541 is released to extinguish fire;
the thickness of the sealing plug is not less than 20mm;
further, the sealing plug 12 may be a circular truncated cone, the bottom surface of which is a surface with a larger area and is fixedly connected with the movable plate 9, and the top surface of which is a surface with a smaller area and faces the fire extinguishing gas channel 14; the diameter of the bottom surface of the fire extinguishing gas channel is 3 to 5mm larger than the pipe diameter of the fire extinguishing gas channel 14, and the diameter of the top surface of the fire extinguishing gas channel is 5 to 8mm smaller than the pipe diameter of the fire extinguishing gas channel 14;
the memory springs 13 are uniformly arranged at the edge of the upper surface of the movable plate 9, the top ends of the memory springs 13 are fixedly connected with the top surface of the inner side of the movable channel 10, and 6-8 memory springs 13 are arranged.
The memory spring 13 is formed by winding a shape memory alloy wire, is in a contraction state (as shown in figure 2) at normal temperature (15 to 40 ℃), and has a length of 30 to 40mm, the movable plate 9 is arranged at the upper part of the movable channel 10, the sealing plug 12 is arranged in the fire extinguishing gas channel 14, the fire extinguishing gas channel 14 and the movable channel 10 are closed, and the memory alloy valve assembly is closed;
the memory spring 13 is in an extension state (shown in figure 3) at high temperature (generally over 80 ℃), the length is 60-80mm, the movable plate 9 is arranged at the lower part of the movable channel 10, the sealing plug 11 is separated from the fire extinguishing gas channel 14 and is positioned in the movable channel 10, the movable channel 10 is communicated with the fire extinguishing gas channel 14, the memory alloy valve assembly is opened, so that the fire extinguishing gas can be discharged from a nozzle of the branch pipe 7 to a pipeline of an underground pipe network, and a fire is extinguished at a fire-starting position.
Preferably, the outer side surface of the branch pipe 7 is fixedly provided with a heat conduction ring 8, the heat conduction ring 8 is arranged at a position corresponding to the movable channel 10, and the heat conduction ring 8 is made of materials which are easy to conduct heat, such as aluminum alloy and the like; through the quick heat conduction of heat conduction ring 8, can heat up fast when taking place the condition of a fire and transmit memory spring 13 with the heat to make it take place deformation and open memory alloy valve module, the release is put out a fire gaseous, accomplishes quick fire extinguishing, has improved fire extinguishing efficiency, can put out a fire fast at the condition of a fire initial stage, avoids the condition of a fire to enlarge and causes more serious consequence.
Preferably, the tank body 1 is provided with the gas filling pipe 4 and the barometer 2 respectively, so that a worker can periodically replenish fire extinguishing gas, and after part of the fire extinguishing gas is consumed in a fire, the fire extinguishing gas is also replenished through the gas filling pipe 4, and the inflation quantity is mastered through the barometer 2.
Preferably, the tank body 1 is provided with an air pressure sensor 3 for automatically detecting the air pressure value in the tank body 1, thereby judging whether the fire extinguishing gas is reduced and further judging whether the fire occurs at the position.
Further, place jar body 1's gaseous main website department of putting out a fire and be provided with the controller, the controller can select to singlechip or PLC controller, baroceptor 3 on the jar body 1 is connected with the controller electricity, the jar internal atmospheric pressure numerical value that will detect conveys the controller, the signal transmission module who passes through the main website by the controller again changes atmospheric pressure and conveys the surveillance center terminal of underground pipe network system, make surveillance center's staff can in time master the jar body 1 atmospheric pressure condition of each gaseous main website of putting out a fire, thereby quick investigation rush repair, avoid the condition of a fire to enlarge, circuit normal operating has been guaranteed, avoid influencing normal power consumption.
The specific working process comprises the following steps: when a fire occurs in an underground pipe network at a certain position, high temperature transfers heat to the memory spring 13 through the heat conduction ring 8, the memory spring 13 is stretched after being heated, the movable plate 9 is pushed to the movable channel 10, the sealing plug 12 is separated from the fire extinguishing gas channel 14, the fire extinguishing gas channel 14 is communicated with the movable channel 10 at the moment, and the fire extinguishing gas in the branch pipe 7 enters the movable channel 10 from the fire extinguishing gas channel 14 and enters a corresponding pipeline of the underground pipe network to react with a fire source in a contact manner, so that fire extinguishing is completed; because the fire extinguishing gas in branch pipe 7 is consumed, jar body 1 supplements the fire extinguishing gas to branch pipe 7 through being responsible for 5, jar internal gas pressure diminishes, pressure sensor 3 detects the atmospheric pressure change and conveys corresponding signal for the controller, the controller is through the monitoring center terminal that the signal transmission module of main website conveyed atmospheric pressure change conveying underground pipe network system after handling, the staff receives the atmospheric pressure change condition through monitoring center terminal (computer and accessory etc.), and judge corresponding pipeline emergence condition according to the main website position, arrange the maintainer to rush to the scene and investigate and salvage.
Preferably, the main pipe 5 is provided with a check valve 6 so that the fire extinguishing gas in the main pipe 5 can only enter the branch pipe 7 from the tank body 1.
The non-public part of the utility model is the prior art, and the concrete structure, the material and the working principle are not detailed. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A passive automatic fire extinguishing device for underground pipe network system which characterized in that: including setting up jar body (1) in the gaseous main website department of putting out a fire, the export of jar body (1) with be responsible for (5) intercommunication, be responsible for (5) and lay in the pipeline of underground pipe network, be responsible for evenly being provided with branch pipe (7) on (5), be provided with memory alloy valve subassembly on branch pipe (7), memory alloy valve subassembly opens when high temperature, closes when the normal atmospheric temperature.
2. A passive automatic fire extinguishing apparatus for underground pipe network system according to claim 1, wherein: the memory alloy valve assembly comprises a movable plate (9), a sealing plug (12) and a memory spring (13) which are arranged on the inner side of a branch pipe (7), the branch pipe (7) internally comprises a fire extinguishing gas channel (14) and a movable channel (10), the fire extinguishing gas channel (14) is communicated with the interior of a main pipe (5), the movable plate (9) is arranged in the movable channel (10) in a vertically sliding mode along the axial direction of the branch pipe (7), a baffle ring (11) used for limiting the movable plate (9) is fixedly arranged on the surface of the inner side of the movable channel (10), and the inner diameter of the movable channel (10) is larger than that of the fire extinguishing gas channel (14); the sealing plug (12) is fixedly arranged on the upper surface of the movable plate (9), the memory springs (13) are uniformly arranged on the edge of the upper surface of the movable plate (9), and the top ends of the memory springs (13) are fixedly connected with the top surface of the inner side of the movable channel (10).
3. A passive automatic fire extinguishing apparatus for underground pipe network system according to claim 1, wherein: the outer side surface of the branch pipe (7) is fixedly provided with a heat conduction ring (8), and the heat conduction ring (8) is arranged at the position corresponding to the movable channel (10).
4. A passive automatic fire extinguishing apparatus for underground pipe network system according to claim 1, wherein: the tank body (1) is provided with an air filling pipe (4) and an air pressure meter (2) respectively.
5. A passive automatic fire extinguishing apparatus for underground pipe network system according to claim 1, wherein: an air pressure sensor (3) is arranged on the tank body (1).
6. A passive automatic fire extinguishing apparatus for underground pipe network system according to claim 1, wherein: the main pipe (5) is provided with a one-way valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222542913.9U CN218516029U (en) | 2022-09-26 | 2022-09-26 | Passive automatic fire extinguishing device for underground pipe network system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222542913.9U CN218516029U (en) | 2022-09-26 | 2022-09-26 | Passive automatic fire extinguishing device for underground pipe network system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218516029U true CN218516029U (en) | 2023-02-24 |
Family
ID=85246113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222542913.9U Active CN218516029U (en) | 2022-09-26 | 2022-09-26 | Passive automatic fire extinguishing device for underground pipe network system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218516029U (en) |
-
2022
- 2022-09-26 CN CN202222542913.9U patent/CN218516029U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104436477B (en) | The large-scale oily plant of transformer station integrates fire-fighting system and method | |
| CN202486112U (en) | Device for cable combustion test | |
| CN218516029U (en) | Passive automatic fire extinguishing device for underground pipe network system | |
| CN111403154A (en) | Quick oil discharge device, control system and control method for transformer body | |
| CN110433439A (en) | A kind of change of current change fire-fighting monitoring system and method | |
| CN210786087U (en) | Fire extinguishing system based on new energy automobile battery subregion management | |
| CN105097190A (en) | Charged full-automatic flame failure protection device and protection method for oil immersed transformer | |
| CN105762938B (en) | A kind of distributed photovoltaic monitoring system of distribution network and its control method | |
| CN202721378U (en) | Fire-proof and explosion-proof monitoring system | |
| CN107715344A (en) | A kind of cable fire-proof device and its application method | |
| CN103742782A (en) | Device and method for powered intelligent gas supplementing of power SF6 (Sulfur Hexafluoride) transducer | |
| CN105575478B (en) | Open-circuit protection cable | |
| CN105305275A (en) | Double-box type substation | |
| CN105202361A (en) | Intelligent SF 6 air inflation unit of electrical equipment | |
| CN205790973U (en) | The electric power system of transformer lines unit connection | |
| CN202488118U (en) | Two-way intertripping protection device | |
| CN211010769U (en) | Portable full-automatic alarm air supplement unit | |
| CN210271153U (en) | Monitoring device for preventing fire disaster in advance by using electric circuit | |
| CN203743828U (en) | Charged intelligent gas supply device of power SF6 transformer | |
| CN205069271U (en) | Electrified automatic fire extinguishing protection device entirely of oil immersed transformer | |
| CN105381883A (en) | Protection device of electrical tar precipitator | |
| CN206532749U (en) | Enclosed type expulsion fuse | |
| CN110778910A (en) | Portable full-automatic alarm air supplementing device and using method | |
| CN201323445Y (en) | Branch line fault separating and segmenting equipment of power distribution network | |
| CN115033034B (en) | Cable joint temperature control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |