CN210963685U - Fire extinguishing system capable of releasing inert gas in low-pressure and stable-flow mode - Google Patents
Fire extinguishing system capable of releasing inert gas in low-pressure and stable-flow mode Download PDFInfo
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- CN210963685U CN210963685U CN201921864838.XU CN201921864838U CN210963685U CN 210963685 U CN210963685 U CN 210963685U CN 201921864838 U CN201921864838 U CN 201921864838U CN 210963685 U CN210963685 U CN 210963685U
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Abstract
The utility model provides a fire extinguishing system for releasing inert gas in a low-pressure and steady-flow manner, which comprises a plurality of medicament gas storage bottles, collecting pipes, a main pipeline, a selector valve and release nozzles, wherein the main pipeline is connected through the collecting pipes; the fire extinguishing system has the advantages that the release pressure is obviously reduced, and the release flow of the medicament is continuously and stably; the gas pressure stabilizing and releasing device ensures that the pressure of the collecting pipe is low, the pressure of the releasing nozzle in the protection subarea is low, and the pressure change is stable; the pipeline and the pipe fitting have small specifications and low pressure grade, and the material and the construction and installation cost are greatly saved; and the steady flow is released, so that the calculation of a pipe network is simplified, and the system structure and corresponding test and maintenance are simplified.
Description
Technical Field
The utility model belongs to the fire-extinguishing equipment field especially relates to a fire extinguishing systems of low pressure stationary flow release inert gas.
Background
The conventional inert mixed gas fire extinguishing system is a one-stage 15MPa pressurizing system and comprises a high-pressure gas storage steel cylinder, a container valve, a collecting pipe, a pressure reducing device such as a pressure reducing pore plate and the like, a selection valve, a pipeline, a spray head, driving equipment and the like. The fire extinguishing agent is stored in a steel cylinder under high pressure, the storage pressure is 15MPa @20 ℃, the action of a conventional container valve is in an on-off mode, the container valve is opened when the fire extinguishing agent is released, the fire extinguishing agent is released from a steel cylinder group to a collecting pipe, the pressure in the collecting pipe rises instantly to reach the peak value of the release pressure, and then the fire extinguishing agent falls rapidly. According to research results, the pressure peak value of the collecting pipe when the conventional inert mixed gas fire extinguishing system is released can reach more than 12MPa, and the pressure peak value approaches to the storage working pressure of 15MPa of the steel cylinders along with the increase of the number of the steel cylinders distributed in fire extinguishing subareas; while the pressure peak of the end nozzle is also close to 6 MPa. Because the system releases high pressure and large flow at the moment, the release amount of the drug gas in the first 20 seconds of the system release exceeds 70 percent, and the subsequent release flow continuity of the fire extinguishing agent is poor. Such high relief pressures present a series of problems: the pressure resistance level of the collecting pipe is high; the requirement on the pipeline material is high, and the requirement on the construction and installation precision is high; the pipe network is complex in calculation and high in requirement on design calculation.
In order to reduce the pressure of the pipe network, a pressure reducing device is generally arranged at the inlet of the main pipe behind the collecting pipe to reduce the pressure and limit the flow. Currently, reduced pressure is commonly used with a reduced pressure orifice plate. The pressure reducing orifice plate reduces the pressure of the fire extinguishing agent through the throttling hole, and the pressure reducing orifice plate only has the function of reducing the pressure of the fire extinguishing agent entering the main pipe and reducing the flow. The IG541 is a clean inert mixed gas fire extinguishing agent, is extracted from the atmosphere, returns to the atmosphere after being released, and can be theoretically used for an attended protection area, but because of the problem of high peak of fire extinguishing release pressure of a conventional system, potential safety hazards of harm to human bodies exist, and the practical application of the IG541 fire extinguishing system is limited to a certain extent. The national standard requires that the discharge time of an IG541 system is as long as the IG541 mixed gas fire extinguishing agent is discharged to 95% of the designed dosage, the discharge time is not more than 60s and not less than 48s, the orifice area of a pressure reduction orifice plate cannot be reduced at will to meet the pressure reduction requirement, the fire extinguishing agent is rapidly reduced from the beginning to the peak value in the face of the release of the fire extinguishing agent, and the pressure change is severe, the effect is not large, and although the pressure reduction effect of the orifice plate pressure reduction and the pipeline on-way resistance is achieved, the pressure peak value of the nozzle end at the tail end of the pipeline in a protection subarea is still as high as 6 MPa. When the system releases, the air pressure in the protection subarea is rapidly increased and reaches a high peak value, in the process, once the building encloses and keeps off the middle door, the window, the glass and other structures and damages, a large amount of fire extinguishing agent gas leaks out of the protection subarea, the pressure of the fire extinguishing agent gas in the later period of the system release is rapidly reduced, the fire extinguishing agent entering the protection subarea is insufficient, and the impregnation condition of the fire extinguishing agent with enough concentration to the protection subarea can not be formed, thereby causing the fire extinguishing failure.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to a fire extinguishing system with low pressure and steady flow for releasing inert gas, so as to provide low pressure and steady flow for releasing inert gas.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a fire extinguishing system for releasing inert gas in a low-pressure and steady-flow manner comprises a medicament gas storage bottle, a collecting pipe, a main pipeline, a protection partition pipeline, a selection valve and a release nozzle; the device comprises a plurality of chemical gas storage bottles, a main pipeline, a plurality of pressure stabilizing and releasing devices and a pressure meter, wherein the chemical gas storage bottles are connected with the main pipeline through collecting pipes; a safety valve is arranged on the main pipeline; the protection partition pipeline comprises a partition release main pipe and a release pipe network; the main pipeline is connected with the subarea release main pipes, each subarea release main pipe is provided with a selector valve, each subarea release main pipe is connected with a release pipe network, and each tail end release port of the release pipe network is connected with a release nozzle.
And the driving cylinder group consists of a nitrogen cylinder and a container valve arranged on the nitrogen cylinder, and the driving pipeline is a closed pipeline and is connected with the driving cylinder group, the selection valve and the gas pressure stabilizing and releasing device.
Further, the driving pipeline can be connected with a plurality of gas pressure stabilizing and releasing devices in series.
Furthermore, a pressure gauge and an electromagnetic pilot valve with a manual starting device are arranged on the container valve.
Furthermore, the gas stabilizer comprises a shell and a piston core arranged in the shell, and a return spring is sleeved on the piston core.
Furthermore, the medicament gas bomb is a plurality of medicament gas bomb groups, and the medicament gas bomb groups are composed of a plurality of medicament gas bombs and gas pressure stabilizing and releasing devices arranged on the plurality of medicament gas bombs.
Furthermore, the number of the medicament gas storage bottles is multiple, and the plurality of the medicament gas storage bottles are connected with the collecting pipe in parallel through the gas pressure stabilizing and releasing device.
Compared with the prior art, a fire extinguishing systems of low pressure stationary flow release inert gas have following advantage:
(1) the fire extinguishing system of the utility model has the advantages that the gas pressure stabilizing and releasing device is arranged on each medicament gas storage bottle, so that the releasing pressure of the fire extinguishing system is obviously reduced, and the medicament releasing flow is continuously and stably kept in the effective fire extinguishing time; the gas pressure stabilizing and releasing device comprises a gas pressure stabilizer and a one-way valve, so that the pressure of the collecting pipe is low (not higher than 5 MPa), the pressure of the conveying pipeline is low, the pressure of the releasing nozzle in the protection subarea is low (not higher than 4 MPa), and the change is stable. Fire extinguishing system pipeline and pipe fitting specification little, the pressure level is low, protection subregion pressure release mouthful is little, saved material and construction installation cost by a wide margin. Meanwhile, because steady flow release is adopted, the calculation of a pipe network is simplified, a pressure reducing pore plate (or a pressure reducing valve) on a pipeline is not needed, and the system structure and corresponding test and maintenance are simplified.
(2) Fire extinguishing systems, a plurality of medicament gas bomb pass through gaseous steady voltage release and pressure collecting pipe parallel connection for building structure intensity requires lowly, is difficult for being destroyed, and fire extinguishing efficiency is high, and fire extinguishing effect is more ideal. The safety of personnel and materials in the protection area is effectively guaranteed, and the protection area can be used for the protection area on duty.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
FIG. 1 is a schematic view of the overall structure of a fire extinguishing system according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a gas pressure stabilizing and releasing device according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a driving bottle set according to an embodiment of the present invention.
Description of reference numerals:
1-a medicament gas cylinder; 2-a gas pressure-stabilizing release device; 3, collecting pipe; 4-a main pipeline; 5-a selector valve; 6-a release nozzle; 7-driving the bottle group; 8-a drive line; 9-safety valve; 10-partition release main pipe; 11-releasing the pipe network; 201-one-way valve; 202-pressure gauge; 203-gas potentiostat; 301-an electromagnetic pilot valve; 302-a container valve; 303-pressure gauge; 304-nitrogen gas cylinder.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 3, a fire extinguishing system for releasing inert gas in a low-pressure steady flow manner comprises a medicament gas storage bottle 1, a collecting pipe 3, a main pipeline 4, a protection partition pipeline, a selection valve 5 and a release nozzle 6; the device comprises a plurality of medicament gas storage bottles 1, a main pipeline 4, release nozzles 6, a gas pressure stabilizing and releasing device 2, a check valve 201 and a pressure gauge 202, wherein the medicament gas storage bottles 1 are connected with the main pipeline 4 through collecting pipes 3, the main pipeline 4 is connected with the release nozzles 6 which are arranged on pipelines of different protection subareas, each medicament gas storage bottle 1 is provided with the gas pressure stabilizing and releasing device 2, and each gas pressure stabilizing and releasing device 2 comprises a gas pressure stabilizer 203, the check valve 201 and the; a safety valve 9 is arranged on the main pipeline 4; the protection partition pipeline comprises a partition release main pipe 10 and a release pipe network 11; the main pipeline 4 is connected with the main partition release pipes 10, each main partition release pipe 10 is provided with a selector valve 5, the main partition release pipes 10 are connected with a release pipe network 11, and each tail end release port of the release pipe network 11 is connected with one release nozzle 6.
The device is characterized by further comprising a driving cylinder group 7 and a driving pipeline 8, wherein the driving cylinder group 7 is composed of a nitrogen cylinder 304 and a container valve 302 arranged on the nitrogen cylinder 304, and the driving pipeline 8 is a closed pipeline and is connected with the driving cylinder group 7, the selection valve 5 and the gas pressure stabilizing and releasing device 2.
The driving pipeline 8 can be connected with a plurality of gas pressure stabilizing and releasing devices 2 in series.
The container valve 302 is provided with a pressure gauge 303 and an electromagnetic pilot valve 301 with a manual starting device;
the gas stabilizer 203 comprises a shell and a piston core arranged in the shell, and a return spring is sleeved on the piston core.
The medicament gas cylinder group is composed of a plurality of medicament gas cylinders 1 and a gas pressure stabilizing and releasing device 2 arranged on the plurality of medicament gas cylinders 1.
The number of the medicament gas storage bottles 1 is multiple, and the plurality of the medicament gas storage bottles 1 are connected with the collecting pipe 3 in parallel through the gas pressure stabilizing and releasing device 2.
The utility model discloses a theory of operation is:
a fire extinguishing system for inert mixed gas with low pressure and steady flow release is composed of a fire extinguishing apparatus and a driving apparatus, wherein the fire extinguishing apparatus comprises: the medicament gas cylinder group consists of a medicament gas cylinder 1 and a gas pressure stabilizing and releasing device 2; the pressure gauge is arranged on the gas pressure-stabilizing releasing device 2 for checking whether the pressure of the bottle group is normal on site, and the releasing port of the pressure-stabilizing releasing device is connected with a releasing hose and a one-way valve and is connected with the collecting pipe 3. The collecting pipe 3 is connected with the medicament gas storage bottle group and collected to the main pipe 4; a safety valve 9 is arranged on the main pipeline, and the pressure relief function is realized when the pressure in the main pipeline is over-pressure; the main pipeline 4 is connected with a subarea release main pipe 10, the subarea release main pipe 10 is provided with a selector valve 5, and the selector valve 5 is opened according to a fire alarm signal to execute a fire extinguishing instruction of medicament release of a corresponding protection subarea, so that the release pipeline of the corresponding protection subarea is communicated with the main pipeline. The main partition release pipe 10 is arranged in a fire partition, the tail end of the main partition release pipe 10 is provided with the release nozzle 6, and the inert gas fire extinguishing agent is finally sprayed into the protection partition through the release nozzle 6 to achieve the fire extinguishing effect.
The drive device comprises a drive cylinder group 7 and a drive line 8. The driving cylinder group 7 consists of a nitrogen cylinder and a container valve, and the container valve is provided with a pressure gauge and an electromagnetic pilot valve with a manual starting device. The driving pipeline 8 is a closed pipeline for connecting the driving bottle group 7, the selection valve 5 and the gas pressure stabilizing and releasing device 2, and comprises a hose, a pipe fitting, a one-way valve and the like.
Taking the fire extinguishing process of the protection subarea B in the attached drawing as an example, when a gas fire extinguishing control panel receives an alarm signal of the protection subarea B and confirms and delays to send a release signal, an electromagnetic pilot valve of a container valve of a driving cylinder group 7 of the protection subarea B is started after receiving a 24VDC control signal, the pilot valve acts to enable a puncture needle to puncture a starting membrane of the container valve, nitrogen in the driving cylinder group 7 of the group B is released to charge a closed driving pipeline 8, a selection valve 5 of a B fire subarea of a main pipeline is released by starting the corresponding protection subarea, then a gas pressure-stabilizing release device 2 of a medicament gas storage cylinder group of the protection subarea B is started, released IG medicament gas which is released in a low-pressure and steady-flow manner sequentially passes through a collecting pipe 3, a main pipeline 4 and the selection valve 5 of a release pipeline of the protection subarea B, reaches a release nozzle 6 along the release pipeline and is released to the protection subarea B, 95 percent of the designed dosage of fire extinguishing medicament, and the fire extinguishing dipping time is ensured according to the requirements of 20 minutes for solid surface fires of wood, paper, fabric and the like, 10 minutes for electrical equipment fires in communication rooms and electronic computer rooms and other solid surface fires, so that fire extinguishing of protection subareas is realized.
It needs to be further explained that:
the utility model discloses a medicament gas bomb 1 adopts IG541 medicament of putting out a fire, and IG541 medicament storage pressure of putting out a fire is not influenced by release pressure, under the prerequisite of having solved the problem that release pressure is high, and this system adopts second grade pressurization system, and the gas storage steel bottle operating pressure of standard and match is 20MPa, compares with one-level pressurization system, and the required storage steel bottle of same medicament volume of putting out a fire still less, has simplified putting of system's equipment effectively, has practiced thrift the area occupied between the steel bottle.
The utility model discloses a gas pressure stabilizer is one kind of surge damping valve, and it extensively is used for the stable automatically regulated of gas pressure, such as gas chromatography, atomic absorption, flame luminosity, biochemical instrument, petrochemical and environmental protection instrument etc.. Customization may also be arranged otherwise for specific needs. The gas stabilizer is used for a phase chromatograph or other instruments to play a role in stabilizing carrier gas, auxiliary gas and other gas sources after the pressure of the carrier gas, the auxiliary gas and other gas sources is stabilized by the gas stabilizer when the input pressure changes unstably.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A fire extinguishing system for releasing inert gas in a low-pressure and steady-flow manner comprises a medicament gas storage bottle, a collecting pipe, a main pipeline, a protection partition pipeline, a selection valve and a release nozzle; the medicament gas bomb is a plurality of, connects the trunk line through the pressure manifold, and the trunk line is connected and is set up in the release nozzle of different protection subregion pipelines, its characterized in that: each medicament gas cylinder is provided with a gas pressure stabilizing and releasing device, each gas pressure stabilizing and releasing device comprises a gas pressure stabilizer, a one-way valve and a pressure gauge, and the medicament gas cylinders are connected with the collecting pipe through the gas pressure stabilizing and releasing devices; a safety valve is arranged on the main pipeline; the protection partition pipeline comprises a partition release main pipe and a release pipe network; the main pipeline is connected with the subarea release main pipes, each subarea release main pipe is provided with a selector valve, each subarea release main pipe is connected with a release pipe network, and each tail end release port of the release pipe network is connected with a release nozzle.
2. A low pressure steady flow inert gas releasing fire suppression system as claimed in claim 1 wherein: the device is characterized by further comprising a driving bottle group and a driving pipeline, wherein the driving bottle group is composed of a nitrogen bottle and a container valve arranged on the nitrogen bottle, and the driving pipeline is a closed pipeline and is connected with the driving bottle group, the selection valve and the gas pressure stabilizing release device.
3. A low pressure steady flow inert gas releasing fire suppression system as claimed in claim 2 wherein: the driving pipeline can be connected with a plurality of gas pressure stabilizing and releasing devices in series.
4. A low pressure steady flow inert gas releasing fire suppression system as claimed in claim 2 wherein: the container valve is provided with a pressure gauge and an electromagnetic pilot valve with a manual starting device.
5. A low pressure steady flow inert gas releasing fire suppression system as claimed in claim 1 wherein: the gas pressure stabilizer comprises a shell and a piston core arranged in the shell, and a return spring is sleeved on the piston core.
6. A low pressure, steady flow, inert gas releasing fire suppression system as claimed in any of claims 1 to 5 wherein: the medicament gas cylinder group is composed of a plurality of medicament gas cylinders and a gas pressure stabilizing and releasing device arranged on the plurality of medicament gas cylinders.
7. A low pressure, steady flow, inert gas releasing fire suppression system as claimed in any of claims 1 to 5 wherein: the plurality of the medicament gas storage bottles are connected with the collecting pipe in parallel through the gas pressure stabilizing and releasing device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921864838.XU CN210963685U (en) | 2019-11-01 | 2019-11-01 | Fire extinguishing system capable of releasing inert gas in low-pressure and stable-flow mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921864838.XU CN210963685U (en) | 2019-11-01 | 2019-11-01 | Fire extinguishing system capable of releasing inert gas in low-pressure and stable-flow mode |
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| CN210963685U true CN210963685U (en) | 2020-07-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112782368A (en) * | 2021-01-04 | 2021-05-11 | 北京市环境保护科学研究院 | Test system and method for industrial organic waste gas collection efficiency evaluation |
| CN115258081A (en) * | 2022-07-28 | 2022-11-01 | 江南造船(集团)有限责任公司 | Design method of liquid cargo tank fire extinguishing system and liquefied gas carrier |
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2019
- 2019-11-01 CN CN201921864838.XU patent/CN210963685U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112782368A (en) * | 2021-01-04 | 2021-05-11 | 北京市环境保护科学研究院 | Test system and method for industrial organic waste gas collection efficiency evaluation |
| CN115258081A (en) * | 2022-07-28 | 2022-11-01 | 江南造船(集团)有限责任公司 | Design method of liquid cargo tank fire extinguishing system and liquefied gas carrier |
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