CN109364400B - Semi-automatic fire and explosion suppression device - Google Patents
Semi-automatic fire and explosion suppression device Download PDFInfo
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- CN109364400B CN109364400B CN201811118920.8A CN201811118920A CN109364400B CN 109364400 B CN109364400 B CN 109364400B CN 201811118920 A CN201811118920 A CN 201811118920A CN 109364400 B CN109364400 B CN 109364400B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
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Abstract
The invention provides a semi-automatic fire-retarding and explosion-suppressing device which comprises a shell and a detector, wherein the shell and the detector are arranged on a gas transmission pipeline, the shell is provided with a triggering mechanism, a supporting mechanism and a fire-retarding and explosion-suppressing component, the triggering mechanism comprises a pressure tank arranged above the shell, a detonator is arranged outside the pressure tank, the supporting mechanism comprises a telescopic hollow pipe arranged inside the shell and a supporting plate arranged at the bottom of the shell, the fire-retarding and explosion-suppressing component comprises a detonation-retarding agent filled in an inner cavity of the shell and fan blades arranged outside the telescopic hollow pipe, and air injection pipes are symmetrically arranged in blade gaps outside the telescopic hollow pipe. After receiving an explosion signal, the semi-automatic fire-retarding and explosion-suppressing device can instantly put all the explosion-suppressing agent into the pipeline to prevent flame from spreading, and meanwhile, the metal fan blades can be rotated at high speed by using high-pressure gas of the pressure tank under the condition without an external source to drive the explosion-suppressing agent to be dispersed in the area, so that a stable explosion-suppressing band is formed, and explosion shock waves are seriously weakened.
Description
Technical Field
The invention belongs to the technical field of flame-retardant explosion suppression safety of high-pressure gas and combustible dust conveying pipelines, and particularly relates to a semi-automatic flame-retardant explosion suppression device.
Background
In the process of conveying gas and combustible dust, explosion or detonation occurs due to deflagration of open fire, so that the pipeline is burst, and the cases of serious accidents are inexhaustible. Combustible gas and dust can easily reach the range of explosive concentration in the conveying process of a pipeline system, and once ignition sources such as mechanical sparks and electric sparks are generated in the pipeline, deflagration, explosion or detonation accidents can occur.
At present, in pipeline conveying systems for fuel gas and combustible dust at home and abroad, common explosion suppression devices comprise a passive explosion suppression device and an active explosion suppression device. The passive explosion suppression device breaks the container containing the explosion suppression agent or lifts the container in advance of the pressure wave transmitted by the explosion flame, so that the explosion suppression agent is dispersed to form high-concentration rock powder cloud or water mist band, and the explosion flame lagging behind the pressure wave is just suppressed and extinguished when arriving. Another typical representation of passive type is a mechanical flame arrester which is simple and inexpensive to construct, but must be cleaned regularly because of the increased resistance and susceptibility to dirt due to the narrow apertures in its working surface. The active explosion suppression device is characterized in that an explosion monitoring sensor detects physical signals such as light, heat or pressure generated by explosion and sends signals to an explosion suppression agent spraying device, and the explosion suppression agent spraying device immediately and quickly sprays explosion suppression agent to achieve the explosion suppression effect.
Based on the problems of the explosion suppression device in the prior art, the invention aims to design a novel semi-automatic fire-retarding and explosion-suppressing device for pipelines of combustible gas and dust systems, the explosion-retarding and fire-retarding effects are realized by adopting a specific physical structure, and an explosion suppression agent and a fire-retarding agent are arranged in the device, so that the purposes of fire retarding and explosion suppression can be simultaneously achieved, the propagation of shock waves in the pipelines when explosion or deflagration occurs in the gas and combustible dust systems is effectively prevented, and further accidents are prevented.
Disclosure of Invention
Aiming at the problems in the prior art, the technical scheme adopted by the invention for solving the problems in the prior art is as follows:
the utility model provides a semi-automatic back-fire and explosion suppression device, is equipped with trigger mechanism, supporting mechanism and back-fire and explosion suppression subassembly, its characterized in that including setting up casing and the detector on gas transmission pipeline on the casing: trigger mechanism is including setting up in the overhead tank of casing top, and the overhead tank outside is equipped with the detonator, supporting mechanism is including setting up in the inside scalable hollow tube of casing and setting up in the backup pad of casing bottom, the back-fire relief is pressed down the subassembly and is including filling the explosion-proof agent in the casing inner chamber to and set up at the outside flabellum of scalable hollow tube, the symmetry is provided with the jet-propelled pipe in the outside flabellum blade clearance of scalable hollow tube.
The bottom air jet of the pressure tank is in butt joint with the top of the telescopic hollow pipe, the opening and closing valve in the outlet direction of the pressure tank is normally closed, and the detonation control valve of the detonator arranged on the valve is opened quickly.
Scalable hollow tube includes the inner tube with atmospheric pressure tank bottom air jet intercommunication to and the cover is established at the outside outer tube of inner tube, and the outer tube bottom is the metal toper thorn head, and the inner tube outside is equipped with the elasticity wedge with outer union coupling section upper portion, does not take place relative movement under the restraint of wedge between the interior outer tube under normal condition, and the inner tube outside is equipped with the separation blade with outer union coupling section bottom, is used for preventing that the outer tube from droing after the outer tube stretches out and draws back to the maximum displacement including.
The length of the overlapped part of the inner tube and the outer tube of the telescopic hollow tube in the unstretched state is not less than the distance between the conical thorn head at the bottom of the telescopic hollow tube and the bottom of the gas transmission pipeline, so that the stretched telescopic hollow tube is ensured to be completely inserted into the gas transmission pipeline.
Gas transmission pipeline is connected with the peripheral profile of casing, and the middle part is kept apart through the protection film, and casing bottom support plate is made by the frivolous fragile material of texture, like brittle plastics or thin glass etc. through the dual isolation of backup pad and protection film for under the normal operating condition of gas transmission pipeline, explosion-proof device does not influence pipeline work.
The flabellum includes that six narrow middle part wide arc transition metal sheets in both ends are made, and six metal flabellum even interval welding are outside scalable hollow tube.
The two air injection pipes are symmetrically arranged outside the telescopic hollow pipe, the pipe body on the inner side of each air injection pipe is communicated with the pipe body in the telescopic hollow pipe, and the nozzles on the outer side of the two air injection pipes are bent in opposite directions, so that the circular airflow of the air sprayed out of the two air injection pipes in the back stroke can drive the telescopic hollow pipe to rotate.
The detector is a flame detector arranged on the inner wall of the gas transmission pipeline, the detector is arranged on the gas transmission pipeline far away from the shell, a certain distance is reserved for signal transmission, the outside of the detector is connected with a detonator of a detonator on the pressure tank through a circuit, and when the detector detects a flame signal generated in the gas transmission pipeline, the detonator is triggered to detonate, and a valve of the pressure tank is rapidly opened.
Threaded holes are formed in the middle of the top of the shell, and external threads matched with the threaded holes in the top of the shell are respectively formed in the air jet at the bottom of the pressure tank and the top tube body of the telescopic hollow tube, so that the air jet at the bottom of the pressure tank and the top tube body of the telescopic hollow tube are fixed with the shell.
The gas transmission pipeline is a pipeline which is easy to deflagrate, such as a combustible gas or dust system.
The specific working process of the device of the invention is as follows:
(1) when the probe of the detector does not receive the explosion signal, the detonator is not triggered, the supporting plate is not damaged, and the shell and the gas transmission pipeline are kept in an isolated state;
(2) after the detector probe receives an explosion signal, a detonator is detonated to rapidly open a pressure tank valve, high-pressure gas is sprayed out to increase the pressure in the telescopic hollow pipe, the inner pipe and the outer pipe are stretched to push the bottom metal conical piercing head to break through the supporting plate and the protective film, and the telescopic hollow pipe outer pipe welded with the metal fan blades and the explosion retardant enter a gas transmission pipeline;
(3) after the telescopic hollow pipe and the explosion suppressant enter the pipeline, high-pressure gas in the pressure tank can finally be sprayed into the pipeline through the telescopic hollow pipe by the gas spraying pipe to drive the fan blades to rotate;
(4) when the explosion shock wave passes through the area provided with the explosion-proof device, the explosion shock wave can be subjected to resistance generated by the rotation of the metal fan blades, and meanwhile, the rotating fan blades drive the explosion suppressant to disperse in an accelerating way, so that flame is extinguished, and the effect of accelerating the attenuation of the shock wave is achieved.
The invention has the following advantages:
according to the semi-automatic fire-retarding and explosion-suppressing device, after receiving an explosion signal, all the explosion-suppressing agent can be instantly thrown into the pipeline to prevent flame from spreading, and meanwhile, the metal fan blades can be rotated at a high speed by using high-pressure gas of the pressure tank under the condition without an external source to drive the explosion-suppressing agent to be dispersed in the area, so that a stable explosion-suppressing band is formed, explosion shock waves are seriously weakened, the whole device is not interfered by the external source, and the effect is reliable;
the explosion-proof and fire-retardant device has the advantages that the explosion-proof and fire-retardant effect is realized by adopting a specific physical structure, the explosion-retardant agent and the fire-retardant agent are arranged in the device, the purposes of fire resistance and explosion suppression can be simultaneously achieved, meanwhile, the metal fan blades can also play the role of accelerating attenuation of explosion shock waves, and the novel semi-automatic fire-retardant and explosion-retardant device has wide market prospect in popularization.
Drawings
FIG. 1 is a schematic front view of a semi-automatic fire and explosion suppression device according to the present invention;
FIG. 2 is a schematic view of the semi-automatic fire and explosion suppression device according to the present invention;
FIG. 3 is a schematic diagram showing the operation of the telescopic hollow tube at different stages, wherein FIG. 3(a) shows that before the pressure tank ejects air, the wedge-shaped button prevents the outer tube from sliding downwards, FIG. 3(b) shows that during the pressure tank ejects air, the wedge-shaped button is squeezed by the outer tube, FIG. 3(c) shows that during the air ejection tube sprays paint, the outer tube passes through the button;
FIG. 4 is a top view of a fan blade structure;
wherein: 1-pressure tank, 2-gas ejector, 3-explosion inhibitor, 4-conical piercing head, 5-telescopic hollow tube, 6-fan blade, 7-supporting plate, 8-protective film, 9-detonator, 10-detector, 11-explosion-preventing device shell and 12-gas transmission pipeline.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings, as shown in fig. 1-4, the semi-automatic fire-retardant explosion-suppression device comprises a shell 11 and a detector 10 which are arranged on a gas transmission pipeline 12, wherein a trigger mechanism, a support mechanism and a fire-retardant explosion-suppression component are arranged on the shell 11, the trigger mechanism comprises a pressure tank 1 arranged above the shell 11, a detonator 9 is arranged outside the pressure tank 1, the support mechanism comprises a telescopic hollow pipe 5 arranged inside the shell and a support plate 17 arranged at the bottom of the shell, the fire-retardant explosion-suppression component comprises a fire-retardant agent 3 filled in an inner cavity of the shell and fan blades 6 arranged outside the telescopic hollow pipe 5, and air injection pipes 2 are symmetrically arranged in blade gaps outside the telescopic hollow pipe 5.
The air jet at the bottom of the pressure tank 1 is butted with the top of the telescopic hollow pipe 5, the opening and closing valve in the outlet direction of the pressure tank is normally closed, and the detonation control valve of the detonator 9 arranged on the valve is opened quickly.
Scalable hollow tube 5 includes the inner tube that communicates with 1 bottom air jet of atmospheric pressure jar, and the outer tube of establishing the inner tube outside is established to the cover, the outer tube bottom is metal system toper thorn head 4, the inner tube outside is equipped with the elasticity wedge with outer union coupling section upper portion, do not take place relative movement under the restraint of wedge between the interior outer tube under normal condition, when intraductal atmospheric pressure rose, can promote the outer tube and slide downwards, break away from the restraint of elasticity wedge, the inner tube outside is equipped with along the protruding separation blade of circumference level with outer union coupling section bottom, be used for preventing that the outer tube from droing after the outer tube stretches out and draws back to the maximum displacement including.
The length of the overlapped part of the inner tube and the outer tube of the telescopic hollow tube 5 in the unstretched state is not less than the distance between the conical thorn head 4 at the bottom of the telescopic hollow tube 5 and the bottom of the gas transmission pipeline, and the stretched telescopic hollow tube 5 is ensured to be completely inserted into the gas transmission pipeline.
The fan blades 6 are made of six arc-shaped transition metal sheets with two narrow ends and wide middle parts, and the six metal fan blades are welded outside the telescopic hollow pipe 5 at even intervals.
The two air injection pipes 2 are symmetrically arranged outside the telescopic hollow pipe 5, the inner side pipe body of each air injection pipe is communicated with the inner pipe body of the telescopic hollow pipe, and the nozzles at the outer sides of the two air injection pipes are bent towards opposite directions, so that the circular airflow of the back stroke of the ejected air in the two air injection pipes can drive the telescopic hollow pipe to rotate.
The detector 10 is a flame detector arranged on the inner wall of the gas transmission pipeline, the detector 10 is arranged on the gas transmission pipeline far away from the shell 1 and keeps a certain distance for signal transmission, the outside of the detector 10 is connected with the detonator of the detonator 9 on the pressure tank 1 through a circuit, and when the detector 10 detects a flame signal generated in the gas transmission pipeline, the detonator 9 is triggered to detonate, and the valve of the pressure tank 1 is rapidly opened.
Threaded holes are formed in the middle of the top of the shell 1, and external threads matched with threaded holes in the top of the shell are respectively formed in the air jet at the bottom of the pressure tank and the top of the telescopic hollow pipe, so that the air jet at the bottom of the pressure tank and the top of the telescopic hollow pipe are fixed with the shell.
The gas transmission pipeline 12 is a pipeline which is easy to generate deflagration, such as a combustible gas or dust system.
The specific working process of the device of the invention is as follows:
(1) when the probe of the detector does not receive the explosion signal, the detonator 9 is not triggered, the supporting plate 7 is not damaged, and the shell and the gas transmission pipeline are kept in an isolated state;
(2) after the probe of the detector receives an explosion signal, the detonator 9 is detonated to rapidly open the valve of the pressure tank 1, high-pressure gas is sprayed out to increase the pressure in the telescopic hollow tube 5, the metal conical puncture head 4 at the bottom is pushed to break through the supporting plate 7 and the protective film 8, and the outer tube of the telescopic hollow tube 5 welded with the metal fan blades and the explosion retardant 3 enter a gas transmission pipeline;
(3) after the telescopic hollow pipe 5 and the explosion suppressant 3 enter the pipeline, high-pressure gas in the pressure tank 1 is finally sprayed into the pipeline through the gas spraying pipe 2 through the telescopic hollow pipe 5 to drive the fan blades 6 to rotate;
(4) when the explosion shock wave passes through the area provided with the explosion-proof device, the explosion shock wave can be subjected to resistance generated by the rotation of the metal fan blade 6, and meanwhile, the rotating fan blade drives the explosion suppressant 3 to disperse in an accelerating way, so that flame is extinguished, and the effect of accelerating the attenuation of the shock wave is achieved.
The protective scope of the present invention is not limited to the above-described embodiments, and it is apparent that various modifications and variations can be made to the present invention by those skilled in the art without departing from the scope and spirit of the present invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (6)
1. The utility model provides a semi-automatic back-fire and explosion suppression device, is equipped with trigger mechanism, supporting mechanism and back-fire and explosion suppression subassembly, its characterized in that including setting up casing and the detector on gas transmission pipeline on the casing: the fire-retardant and explosion-suppression assembly comprises a fire-retardant agent filled in an inner cavity of the shell and fan blades arranged outside the telescopic hollow tube, two air injection tubes are symmetrically arranged in blade gaps outside the telescopic hollow tube and are symmetrically arranged outside the telescopic hollow tube, tube bodies inside the air injection tubes are communicated with the tube bodies inside the telescopic hollow tube, and nozzles outside the two air injection tubes are bent in opposite directions;
the telescopic hollow pipe comprises an inner pipe communicated with an air jet at the bottom of the air pressure tank and an outer pipe sleeved outside the inner pipe, the bottom of the outer pipe is a metal conical thorn, an elastic wedge-shaped block is arranged at the upper part of a connecting section of the outer side of the inner pipe and the outer pipe, and a baffle plate is arranged at the bottom of the connecting section of the outer side of the inner pipe and the outer pipe;
the length of the overlapped part of the inner pipe and the outer pipe of the telescopic hollow pipe in the unstretched state is not less than the distance between the conical thorn at the bottom of the telescopic hollow pipe and the bottom of the gas transmission pipeline;
the flabellum includes that six narrow middle part wide arc transition metal sheets in both ends are made, and six metal flabellum even interval welding are outside scalable hollow tube.
2. A semi-automatic fire and explosion arresting device as defined in claim 1, wherein: the bottom air jet of the pressure tank is in butt joint with the top of the telescopic hollow pipe, the opening and closing valve in the outlet direction of the pressure tank is normally closed, and the detonation control valve of the detonator arranged on the valve is opened quickly.
3. A semi-automatic fire and explosion arresting device as defined in claim 1, wherein: the gas transmission pipeline is connected with the peripheral outline of the shell, the middle part of the gas transmission pipeline is isolated through a protective film, and the bottom supporting plate of the shell is made of a fragile material which is light and thin in texture.
4. A semi-automatic fire and explosion arresting device as defined in claim 1, wherein: the detector is a flame detector arranged on the inner wall of the gas transmission pipeline, the detector is arranged on the gas transmission pipeline far away from the shell, and the outside of the detector is connected with the detonator of the detonator on the pressure tank through a circuit.
5. A semi-automatic fire and explosion arresting device as defined in claim 1, wherein: the middle of the top of the shell is provided with a threaded hole, and the bottom air jet of the pressure tank and the top tube body of the telescopic hollow tube are respectively provided with external threads matched with the threaded hole at the top of the shell.
6. A semi-automatic fire and explosion arresting device as defined in claim 1, wherein: the gas transmission pipeline is a pipeline of a combustible gas or dust system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811118920.8A CN109364400B (en) | 2018-09-25 | 2018-09-25 | Semi-automatic fire and explosion suppression device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811118920.8A CN109364400B (en) | 2018-09-25 | 2018-09-25 | Semi-automatic fire and explosion suppression device |
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| Publication Number | Publication Date |
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| CN109364400A CN109364400A (en) | 2019-02-22 |
| CN109364400B true CN109364400B (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811118920.8A Active CN109364400B (en) | 2018-09-25 | 2018-09-25 | Semi-automatic fire and explosion suppression device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112853398B (en) * | 2021-01-28 | 2021-11-16 | 福建德尔科技有限公司 | Hydrogen emptying device |
| CN113893480B (en) * | 2021-10-29 | 2022-12-16 | 广东电网有限责任公司广州供电局 | Cable pit extinguishing device |
| CN114796953B (en) * | 2022-06-29 | 2022-09-02 | 安普科技有限公司 | Spark is surveyed and is carried processing apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055450A (en) * | 2012-12-17 | 2013-04-24 | 东北大学 | Spontaneous explosion suppression device |
| CN205612899U (en) * | 2016-03-31 | 2016-10-05 | 四川省明厚天信息技术股份有限公司 | Temperature -sensing automatic fire extinguisher |
| CN206745793U (en) * | 2017-05-23 | 2017-12-15 | 陕西亿美万泰科技有限公司 | A kind of extinguishing device of passenger airplane |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6699035B2 (en) * | 2001-09-06 | 2004-03-02 | Enardo, Inc. | Detonation flame arrestor including a spiral wound wedge wire screen for gases having a low MESG |
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2018
- 2018-09-25 CN CN201811118920.8A patent/CN109364400B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055450A (en) * | 2012-12-17 | 2013-04-24 | 东北大学 | Spontaneous explosion suppression device |
| CN205612899U (en) * | 2016-03-31 | 2016-10-05 | 四川省明厚天信息技术股份有限公司 | Temperature -sensing automatic fire extinguisher |
| CN206745793U (en) * | 2017-05-23 | 2017-12-15 | 陕西亿美万泰科技有限公司 | A kind of extinguishing device of passenger airplane |
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