CN1235652C - Impulse jet type fire-extinguishing gun - Google Patents
Impulse jet type fire-extinguishing gun Download PDFInfo
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- CN1235652C CN1235652C CN 01113528 CN01113528A CN1235652C CN 1235652 C CN1235652 C CN 1235652C CN 01113528 CN01113528 CN 01113528 CN 01113528 A CN01113528 A CN 01113528A CN 1235652 C CN1235652 C CN 1235652C
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Abstract
The present invention relates to a pulse jet fire extinguishing gun which is characterized in that a fire extinguishing agent with pressure enters a fire extinguishing agent cavity so as to push a piston to backward move; a trigger is pulled, pressure gas enters a gas cylinder to push the piston to forward move; when the pressure of the fire extinguishing agent is higher than the set pressure of a pressure regulating screw bolt, the fire extinguishing agent fast rushes outside a nozzle to be outward jetted; the trigger is released, a gas inlet is closed; the piston forward moves and contacts a pressure relief valve, a pressure relief hole channel is opened, and the pressure gas in the air cylinder is relieved; the piston backward moves, the pressure relief hole channel for the gas is closed, an inlet for the fire extinguishing agent is opened; the fire extinguishing agent is jetted in a pulse type mode by repeatedly implementing the operation in such a way. The fire is extinguished in a short time by using minute quantity of fire extinguishing agent, and the present invention is convenient in use.
Description
The invention belongs to fire-fighting fire extinguishing equipment technical field, be specifically related to the impulse jet type extinguishing device.
Existing fire-extinguishing gun generally takes the long-time continuous spray fire extinguishing agent to stamp out a fire with the critical value that reaches fire extinguishing, this not only needs to consume a large amount of extinguishing chemicals, and bring action, inconvenient operation because of carrying a large amount of extinguishing chemicals, the fire extinguishing needs that can not maneuverability ground adapt to various fire hazard environments, fire extinguishing is renderd a service low, also can cause severe contamination to environment.
Though, and some experimental studies are arranged, on market, yet there are no the Related product of fine mist fire-fighting, and the shortcoming of continuous injection fire extinguishing does not obtain the essence change in recent years both at home and abroad relevant for the exploratory theoretical research of adopting fine mist fire-fighting mechanism.So far do not see the report that adopts the impulse jet type fire gun is arranged.
The invention provides a kind of impulse jet fire gun,, can save extinguishing chemical greatly with its fire-fighting efficiency height.
Accompanying drawing 1 is the structural principle schematic diagram of impulse jet fire gun of the present invention.
This pulsation type jetting fire extinguishing gun is characterized in that the rifle core (5) of fire gun rifle body (1) is the cylinder of a hollow, and establish at the middle part Cylinder (25), in-built secondary piston (20) and back piston (21) they are the oil pocket (7) that is marked with lubricating oil between the two-piston; Cylinder (25) Valve seat (27) is housed in the inner chamber at rear portion, and the spool (28) that is set with spring (29) is installed in the valve seat (27); Trigger (30) with With the turnable pin-connect of rivet, pacify with pin (3) by the upper end of trigger (30) on the crosspoint for the valve rod (31) of spool (28) rear end Be contained on the fire gun rifle core (5); Wall at rifle core (5) middle part, valve seat (27) front end is provided with logical by what consist of to internal check valve To the interior pressed gas air inlet (26) of cylinder (25), this air inlet (26) is positioned at spool (28) front end when trigger (30) is decontroled Can be with its shutoff and the position that air inlet (26) can be opened when pulling trigger (30); At the gas near valve seat (27) front end Casing wall is provided be used to the convex shoulder that stops piston (6); Gas release duct entrance (24) is opened and is being arranged in cylinder (25) near convex shoulder (6) on the cylinder wall of front, and by the gas release duct (23) of opening in wall, through pressure-relief valve (19), be communicated to rifle core (5) The relief port of front end (14); Be connected with fire gun nozzle (12) behind the entrance point pocketed springs (10) of extinguishing chemical outlet valve (11), Use protecgulum (15) encapsulation to be fixed on the front end of rifle core (5), the port of export of extinguishing chemical outlet valve (11) is equipped with regulator bolts (13) again; Be extinguishing chemical chamber (8) between the entrance point of extinguishing chemical outlet valve (11) and the secondary piston (20), in the forefront of extinguishing chemical chamber (8) The pressure-relief valve (19) of touching control gases at high pressure release ducts (23) switching that utilizes secondary piston (20) is housed, this pressure-relief valve on the wall (19) be installed in release duct (23) behind the cylinder pocketed springs (18) by in the inboard wall groove of position, pressure-relief valve (19) cylinder The tail end of protrusion more than cylinder inner wall is high inclined-plane (16) before rear the hanging down, and has the tail end inclined-plane that protrudes when cylinder on the cylinder The pressure-relief valve duct (17) that release duct (23) can be connected when all being pressed into the cylinder inner wall groove by secondary piston (20), and current Piston (20) retreats post tail inclined-plane (16), pressure-relief valve (19) cylinder of removing pressure-relief valve (19) and is made tail end by spring (18) ejection When protruding from cylinder inner wall, this pressure-relief valve duct (17) is shifted and gas release duct (23) is closed; Upper at rifle core (5) In near on the wall in pressure-relief valve (19) extinguishing chemical chamber (8) afterwards, be provided with by the extinguishing chemical import (9) that consists of to internal check valve.
During use, extinguishing chemical import 9 is connected the extinguishing chemical source of supply with certain pressure, air inlet 26 connects the pressed gas source of supply; Extinguishing chemical with certain pressure through extinguishing chemical import 9, enter extinguishing chemical chamber 8, promote piston 20 and then promote piston 21 move backward, fill with extinguishing chemical, back piston 21 arrival convex shoulders 6 up to extinguishing chemical cavity 8; Pull trigger 30, valve rod 31 is being with spool 28 to move down and is being compressed spring 29 and pressed gas air inlet 26 is opened, the pressed gas that is provided by the pressed gas source of supply enters cylinder 25 from air inlet 26, promoting back piston 21 moves forward, thereby promoting secondary piston 20 travels forward, extinguishing chemical in the extinguishing chemical cavity 8 is compressed and the pressure rising, when the pressure of extinguishing chemical surpasses the controlled pressure of the extinguishing chemical outlet valve of being set by regulator bolts 13 adjustings 11, extinguishing chemical outlet valve 11 is washed open rapidly, and extinguishing chemical ejects from fire gun nozzle 12; When extinguishing chemical begins to spray, can unclamp trigger 30, compressed spring 29 resiliences make to move on the spool 28 closes air inlet 26; Along with the pressure in the extinguishing chemical chamber 8 reduce, secondary piston 20 continues reach and runs into pressure-relief valve 19 cylinders and protrude tail end inclined-plane 16 more than cylinder inner wall, and and then compression spring 10; Spring 18 was compressed when cylinder tail end inclined-plane 16 was pressed into the cylinder inner wall groove by secondary piston 20, it is that pressure-relief valve 19 is opened that release duct 23 is connected in pressure-relief valve duct 17, and the gases at high pressure in the cylinder 25 are from release duct inlet 24, lay down by pressure-relief valve 19 to the relief port 14 of rifle core 5 front ends through release duct 23; Along with the pressure in the cylinder 25 reduces, simultaneously under the rebound effect of spring 10, secondary piston 20 moves backward, when secondary piston 20 retreats when making tail end protrude from cylinder inner wall and the post tail inclined-plane 16, pressure-relief valve 19 cylinders that leave pressure-relief valve 19 are ejected by spring 18, the displacement in pressure-relief valve duct 17 is closed gas release duct 23; When secondary piston 20 moved to above extinguishing chemical import 9 backward, extinguishing chemical import 9 promptly was opened, and extinguishing chemical enters extinguishing chemical cavity 8 via extinguishing chemical import 9 once more, had so just finished the pulsatile once formula and had sprayed.
Repeat like this later on, the extinguishing chemical that forms many pulseds sprays.
Pulsing jet is that a kind of noncontinuity ground is interrupted jet, and the image of the jet of this discontinuous is similar to bullet very much, and it can be the form that cumulative puts suddenly and produces.Owing in several milliseconds time, extinguishing chemical is penetrated with pulse mode, the extinguishing chemical band very big kinetic energy, with very high speed directive fire kitchen range, penetrate fireball, only need use few extinguishing chemical with its fire extinguishing, can extinguish the blaze in a short period of time, not only save extinguishing chemical, reduced the fire extinguishing cost, and significantly reduced the pollution of extinguishing chemical environment.Relatively large impulse jet fire gun can adopt the higher pressed gas of pressure, and range is far away, can be fixedly mounted on the fire fighting truck or is fixedly mounted on place with fire disaster dangerous matter sources as fixing fire fighting device, is used to put out bigger fire.Because impulse jet fire-fighting efficiency height only need consume few extinguishing chemical, thus portable liquid pulse ejecting extinguishing rifle can be made, easy to use, flexible; Be applicable to and put out serious oil fire and forest fires, and put out small size fire in automobile, rubber tyre and the room.
Impulse jet fire gun of the present invention can be applicable to the most liquid extinguishers that comprise water.When adopting water to be extinguishing chemical, because the pulsating water spray painting that adopts higher pressure to make water injection system produce noncontinuity goes out, the pulse fire gun does not use the spray painting head, the generation of thin water smoke is to lean on the collision of air and hydrone to realize, does not therefore have the blockage problem of existing spray painting head fire extinguisher; Simultaneously, the effect of the oxygen at rapid refrigeration and isolated burning object place is played in tiny water smoke pearl evaporation, thereby the temperature that reduces the comburant surface reaches the purpose of fire extinguishing, and the pulse mist fire-fighting of this high-pressure low-flow water column continuous injection fire extinguishing of the big flow of tap commonly used can be economized on water more than 90%.Existing solid stream of water extinguishing method can not adopt because of the safety problem of the meeting conduction fire to charging zone, and the pulsing jet water smoke of the noncontinuity that impulse jet of the present invention produces can not conduct electricity, so also can be used for the fire extinguishing of charging zone fire.
Specify embodiments of the invention below in conjunction with accompanying drawing.
Embodiment 1:
Present embodiment is a kind of portable impulse jet fire gun.Extinguishing chemical source of supply and pressed gas source of supply are provided by extinguishing chemical voltage supply bag 2.
The rifle core 5 of fire gun is the steel cylinder of a hollow, interior dress secondary piston 20 and back piston 21, and the gap between the two-piston is for annotating the oil pocket 7 of lubricating oil; In the inner chamber at cylinder 25 rear portions valve seat 27 is housed, the spool 28 that is set with spring 29 is installed in the valve seat 27; With the turnable pin-connect of rivet, the upper end of trigger 30 is installed on the fire gun rifle core 5 with pin 3 valve rod 31 of trigger 30 and spool 28 rear ends on the crosspoint; On the wall of the forward position of rifle core 5 middle part valve seats 27, install as air inlet 26 to internal check valve, this air inlet 26 is positioned at that when trigger 30 is decontroled spool 28 front ends can be blocked it and air inlet 26 can be opened when pulling trigger 30 position; Be provided with the convex shoulder 6 that is used to stop piston near on the cylinder wall of valve seat 27 front ends; On cylinder 25 walls of the anterior locations of the bottom that is positioned at rifle core 5, convex shoulder 6, open gas release duct inlet 24; Release duct inlet 24 is opened a gas release duct 23 to inwall between the relief port 14 of rifle core 5 front ends; Entrance point pocketed springs 10 backs of extinguishing chemical outlet valve 11 are connected with fire gun nozzle 12, are fixed on the front end of rifle core 5 again with protecgulum 15 encapsulation, and the port of export of extinguishing chemical outlet valve 11 is installed regulator bolts 13; The pressure-relief valve 19 of touching control gases at high pressure release duct 23 switchings that utilize secondary piston 20 is housed on the inwall of extinguishing chemical chamber 8 forefronts, be installed in behind the cylinder pocketed springs 18 of this pressure-relief valve 19 in the inboard wall groove through the position in release duct 23, the tail end that pressure-relief valve 19 cylinders protrude more than cylinder inner wall is high inclined-plane 16 before hang down a back, have the pressure-relief valve duct 17 that when the tail end inclined-plane that cylinder protrudes all is pressed into the cylinder inner wall groove by secondary piston 20, release duct 23 can be connected on the cylinder, retreat the post tail inclined-plane 16 of removing pressure-relief valve 19 and work as secondary piston 20, pressure-relief valve 19 cylinders are ejected by spring 18 and when making tail end protrude from cylinder inner wall, this pressure-relief valve duct 17 is shifted gas release duct 23 is closed; On rifle core 5, be positioned on the position after 8 front portions, extinguishing chemical chamber, the pressure-relief valve 19, be provided with by the extinguishing chemical import 9 that constitutes to internal check valve.
The rear and front end of the top of rifle body 1 is equipped with two sling swivels 4 using for braces, and rifle body 1 inferoanterior is installed the handle 21 for grasped.
Extinguishing chemical voltage supply bag 2 comprises extinguishing chemical bottle 40, pressure cylinder 41 and withstand voltage transfer tube composition, pressure cylinder switch 35 is housed on the pressure cylinder 41, one port of export of switch 35 is connected with the entrance point of Pressure gauge 34, and the port of export of Pressure gauge 34 is connected with the air inlet 26 of fire gun 1 by withstand voltage transfer tube 32; Another port of export of switch 35 is connected to extinguishing chemical bottle 40 by withstand voltage transfer tube 36 through pressure limiting valve 37 and is connected; Transfer tube 42 is installed in the extinguishing chemical bottle 40, and 39 imports are connected with gauge tap, and bottom, gauge tap 39 imports that the lower port of extinguishing chemical transfer tube 42 is in extinguishing chemical liquid are connected with the extinguishing chemical import 9 of fire gun 1 by withstand voltage transfer tube 33 through Pressure gauge 38.Whole extinguishing chemical voltage supply bag 2 is contained in one and can carries on the back at back or carry on the arm in piggyback the knapsack.
When present embodiment makes water as extinguishing chemical, the extinguishing chemical voltage supply bag 2 of a Backpack type comprises one 12 liters bucket as extinguishing chemical bottle 38, pressure cylinder 41 is that a capacity is 2 liters, withstand voltage 300 gas cylinders that cling to, can be filled with compressed air in advance in the gas cylinder, also can charge into nitrogen or other anti-flammability gas, by by-pass cock 35 and pressure-regulating valve 37, provide 6 pressure that cling to through transfer tube to bucket, the pressure of 25 crust are provided to fire gun.Under action of pressure, extinguishing chemical outlet valve 11 was opened in the extremely short time, the water smoke of ejection 30-150 μ m, and speed can reach 120-200m/s.
During fire extinguishing, extinguishing chemical in the extinguishing chemical voltage supply bag 2 in the extinguishing chemical bottle 40 is under the 6 bar pressure pressure effects that pressure cylinder 41 provides, through transfer tube 42, Pressure gauge 38, transfer tube 33, when entering extinguishing chemical chamber 8 by extinguishing chemical import 9, promote piston 20 and then promote piston 21 to move backward, up to extinguishing chemical cavity 8 fill with extinguishing chemical, back piston 21 retreats to convex shoulder 6; Pull trigger 30, valve rod 31 is being with spool 28 to move down and air inlet 26 is opened and is being compressed spring 29, provide by pressure cylinder 41 and to have 25 bar pressure air and enter cylinder 25 from air inlet 26 by transfer tube 32, promoting back piston 21 moves forward, thereby promoting secondary piston 20 travels forward, extinguishing chemical in the extinguishing chemical cavity 8 is compressed, and extinguishing chemical can not reflux and form high pressure; When the pressure in the extinguishing chemical chamber 8 surpassed the controlled pressure of the extinguishing chemical outlet valve of being set by regulator bolts 13 adjustings 11, extinguishing chemical outlet valve 11 was washed open rapidly, and extinguishing chemical ejects from fire gun nozzle 12; When the extinguishing chemical in the extinguishing chemical chamber has sprayed soon, unclamp trigger 30, compressed spring 29 resiliences make to move on the spool 28 closes air inlet 26; In course of injection along with the pressure in the extinguishing chemical chamber 8 reduces, secondary piston 20 reach and bruising high inclined-plane 16 before pressure-relief valve 19 tail ends back low, spring 18 was compressed when pressure-relief valve 19 was opened, pressure-relief valve duct 17 is connected with release duct 23, gases at high pressure in the cylinder 25 14 are laid down from the relief port by pressure-relief valve 19 through release duct 23, simultaneously secondary piston 20 compression springs 10; Under the rebound effect of spring 10, secondary piston 20 moves backward, when secondary piston 20 retreats that post tail inclined-plane 16, pressure-relief valve 19 cylinders of removing pressure-relief valve 19 are ejected by spring 18 and when making tail end protrude from cylinder inner wall, this pressure-relief valve duct 17 is shifted gas release duct 23 is closed; When secondary piston 20 moved to above extinguishing chemical import 9 backward, extinguishing chemical import 9 promptly was opened, and extinguishing chemical enters extinguishing chemical cavity 8 via extinguishing chemical import 9 once more, had finished the pulsatile once formula and had sprayed.
This portable impulse jet fire gun, every pulse can be launched the extinguishing chemical that 0.25-1 rises, and range is 1-15m, and is easy to use, flexible, and be all very effective to indoor outer fire extinguishing.Be specially adapted to put out the small size fire in the room, oil fire, forest fires, and put out automobile and rubber tyre fire.
Embodiment 2:
Present embodiment is a kind ofly suitable be fixedly mounted on the fire fighting truck or be fixedly mounted on place with fire disaster dangerous matter sources as fixing fire fighting device, is used to put out the relatively large impulse jet fire gun than conflagration.
The extinguishing chemical source of supply of this impulse jet fire gun can adopt have larger capacity and can be anti-the extinguishing chemical storage tank of big pressure, the pressed gas source of supply can adopt air compressor or big high pressure tank.
The gases at high pressure port of export of air compressor or high pressure tank is connected with pressure valve and Pressure gauge, and be connected with the air inlet 26 of fire gun 1 by withstand voltage transfer tube, be connected to extinguishing chemical storage tank by withstand voltage transfer tube through pressure limiting valve with a switch and another port of export simultaneously; The transfer tube of installing in the extinguishing chemical storage tank is connected with the extinguishing chemical import 9 of fire gun 1 by withstand voltage transfer tube with gauge tap.This relatively large impulse jet fire gun, every pulse can be launched the extinguishing chemical that 1-3 rises, and range can reach 10-30m, and is very effective to the open air fire extinguishing.Be specially adapted to put out large-area fire, as oil storage tank fire, forest fire and building fire.
Because the pressed gas pressure height that this relatively large impulse jet fire gun is adopted, jet power is big, far firing range, when operation, has bigger recoil strength, should with can about, the control frame of left-right rotation is fixedly mounted on the fire fighting truck, or be installed in place and use as fixing fire fighting device with fire disaster dangerous matter sources; Because used fire-fighting dose is bigger, the extinguishing chemical source of supply can adopt has larger capacity and extinguishing chemical storage tank that can anti-big pressure, will be dragged to the scene of fire with fixing fire gun of control frame and extinguishing chemical storage filling by fire fighting truck and put out a fire when needs use.
Claims (2)
1, a kind of impulse jet fire gun is characterized in that: the rifle core (5) of fire gun rifle body (1) is the cylinder of a hollow, and cylinder (25) is established at the middle part, and interior dress secondary piston (20) and back piston (21) are the oil pocket (7) that is marked with lubricating oil between the two-piston; In the inner chamber at cylinder (25) rear portion valve seat (27) is housed, the spool (28) that is set with spring (29) is installed in the valve seat (27); With the turnable pin-connect of rivet, the upper end of trigger (30) is installed on the fire gun rifle core (5) with pin (3) valve rod (31) of trigger (30) and spool (28) rear end on the crosspoint; Be provided with on the wall of rifle core (5) middle part, valve seat (27) front end by the pressed gas air inlet (26) in the cylinder (25) of leading to that constitutes to internal check valve, this air inlet (26) is positioned at when trigger (30) is decontroled spool (28) front end can be with its shutoff and the position that air inlet (26) can be opened when pulling trigger (30); Be provided with the convex shoulder (6) that is used to stop piston near on the cylinder wall of valve seat (27) front end; Gas release duct inlet (24) is opened and is being arranged in cylinder (25) near on the cylinder wall of convex shoulder (6) front, and by the gas release duct (23) of opening in wall, through pressure-relief valve (19), is communicated to the relief port (14) of rifle core (5) front end; Entrance point pocketed springs (10) back of extinguishing chemical outlet valve (11) is connected with fire gun nozzle (12), uses protecgulum (15) encapsulation to be fixed on the front end of rifle core (5) again, and the port of export of extinguishing chemical outlet valve (11) is equipped with regulator bolts (13); Be extinguishing chemical chamber (8) between the entrance point of extinguishing chemical outlet valve (11) and the secondary piston (20), the pressure-relief valve (19) of touching control gases at high pressure release ducts (23) switching that utilizes secondary piston (20) is housed on the inwall of extinguishing chemical chamber (8) forefront, be installed in release duct (23) behind the cylinder pocketed springs (18) of this pressure-relief valve (19) by in the inboard wall groove of position, the tail end that pressure-relief valve (19) cylinder protrudes more than cylinder inner wall is high inclined-plane (16) before hang down a back, have the pressure-relief valve duct (17) that when the tail end inclined-plane that cylinder protrudes all is pressed into the cylinder inner wall groove by secondary piston (20), release duct (23) can be connected on the cylinder, retreat the post tail inclined-plane (16) of removing pressure-relief valve (19) and work as secondary piston (20), when pressure-relief valve (19) cylinder is made tail end protrude from cylinder inner wall by spring (18) ejection, this pressure-relief valve duct (17) is shifted and gas release duct (23) is closed; Being positioned on the rifle core (5), be provided with by the extinguishing chemical import (9) that constitutes to internal check valve near on the wall in pressure-relief valve (19) extinguishing chemical chamber (8) afterwards.
2, the extinguishing chemical voltage supply bag used of a kind of supporting impulse jet fire gun is characterized in that comprising that extinguishing chemical bottle (40) and pressure cylinder (41) form; Switch (35) is housed on the pressure cylinder (41), and a road of switch (35) is connected with the air inlet (26) of fire gun (1) by pressed gas transfer tube (32) through Pressure gauge (34); Another road is connected with space more than the extinguishing chemical liquid level in pressure limiting valve (37) is connected to extinguishing chemical bottle (40) by transfer tube (36); Lower ending opening extends the transfer tube (42) of extinguishing chemical bottle (40) bottom, and its upper end is connected with the extinguishing chemical import (9) of fire gun (1) through switch (39), Pressure gauge (38) and extinguishing chemical transfer tube (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01113528 CN1235652C (en) | 2001-04-11 | 2001-04-11 | Impulse jet type fire-extinguishing gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01113528 CN1235652C (en) | 2001-04-11 | 2001-04-11 | Impulse jet type fire-extinguishing gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1380121A CN1380121A (en) | 2002-11-20 |
| CN1235652C true CN1235652C (en) | 2006-01-11 |
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ID=4660248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01113528 Expired - Fee Related CN1235652C (en) | 2001-04-11 | 2001-04-11 | Impulse jet type fire-extinguishing gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1235652C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111481867A (en) * | 2020-03-25 | 2020-08-04 | 中国消防救援学院 | Mobile pulse air pressure spray water gun and emergency danger avoiding method |
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| CN103007470A (en) * | 2012-12-06 | 2013-04-03 | 浙江工业大学 | Gas-liquid buffered high-pressure gas water bomb launcher |
| CN103007469B (en) * | 2012-12-06 | 2015-04-22 | 浙江工业大学 | High-pressure gas water-bomb firing apparatus |
| CN103055457B (en) * | 2012-12-18 | 2015-04-22 | 浙江工业大学 | High pressure gas water bomb launching device buffered by valve control airbag |
| CN103463773B (en) * | 2013-09-12 | 2019-11-05 | 中国农业大学 | High-speed pulse air fire extinguishing spray gun |
| CN109967482B (en) * | 2019-04-11 | 2021-11-23 | 淄博豪迈实验室装备有限公司 | Special no pipeline ventilation equipment in laboratory |
| CN115607884B (en) * | 2022-08-09 | 2023-06-09 | 浙江中辰城市应急服务管理有限公司 | Individual soldier fire extinguishing apparatus |
-
2001
- 2001-04-11 CN CN 01113528 patent/CN1235652C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111481867A (en) * | 2020-03-25 | 2020-08-04 | 中国消防救援学院 | Mobile pulse air pressure spray water gun and emergency danger avoiding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1380121A (en) | 2002-11-20 |
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