CN200952591Y - Pressure-relief valve and stand-by pressing fire fighting device - Google Patents
Pressure-relief valve and stand-by pressing fire fighting device Download PDFInfo
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- CN200952591Y CN200952591Y CN 200620041369 CN200620041369U CN200952591Y CN 200952591 Y CN200952591 Y CN 200952591Y CN 200620041369 CN200620041369 CN 200620041369 CN 200620041369 U CN200620041369 U CN 200620041369U CN 200952591 Y CN200952591 Y CN 200952591Y
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- valve
- pressure
- spool
- reduction valve
- piston
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Abstract
The utility model provide a pressure-reducing valve and a pressure preparing fire-extinguishing device. A pressure reducing valve is provided between a valve of the power gas container and a container of the extingushing agent, which can be turned on slowly and be adjusted automatically to reduce the pressure. One end of the main spring of the pressure reducing valve is provided with a piston, a cavity for buffering is positioned at the other end of the piston. After the piston reaches the given pressure-adjusting loop, the valve plug carries out the normal pressure adjustment to reduce the pressure by the spring. The utility model can adjust and reduce the pressure of the power gas to reach constant pressure output, make full use of the energy of the power gas during an effective period, increase the distance in which the fire-extingushing agent can be conveyed and improve the spraying function and the fire-extingushing efficiency. In addition, the utility model can turn on the reducing valve slowly in order to avoid the overpressure shock to the container of fire-extingushing agent by fast releasing the power gas under high pressure.
Description
One, technical field:
The utility model relates to a kind of fire-fighting equipment, particularly discloses a kind of reduction valve and prepared type fire-extinguishing device, is applied to the fire prevention field.
Two, background technique:
Prepared type fire-extinguishing device is that the extinguishing agent with liquid state is stored in the container, and the power gas that plays progradation is stored in another high-pressure bottle with gaseous state, is communicated with power gas vessel valve, decompressor and connecting tube between two containers.When fire takes place; Fire Services Communication Centre sends actuating signal and opens power gas vessel valve; power gas is discharged; after the decompressor decompression, charge into foamite container; make the pressure in the foamite container raise; with the extinguishing agent containers for pushing out, to the nozzle vaporization, spurt the protection place through conveyance conduit, to reach the purpose of fire extinguishing.
At present, known prepared type fire-extinguishing device is to adopt the orifice plate decompressor that power gas is reduced pressure, this orifice plate decompression technology uses the problem below existing in prepared type fire-extinguishing device: according to orifice plate decompression principle, along with power gas pressure constantly descends, the orifice plate delivery pressure also descends thereupon, in working lipe, can not keep steadily pressure conveying, just can not in the effective time, make full use of the storing energy of power gas, lot of energy will be wasted in outside the working lipe of regulation, directly influence the effective fed distance of extinguishing agent and the fogging degree of extinguishing agent, reduced its fire extinguishing effect.
Three, summary of the invention:
The purpose of this utility model is to overcome the problems referred to above that known prepared type fire-extinguishing device exists, a kind of reduction valve and prepared type fire-extinguishing device are disclosed, this device has adopted can slowly open the also reduction valve of automatic Regulation decompression, power gas is carried out the pressure regulation decompression reach constant voltage output, and avoided high voltage power gas to discharge the superpressure that foamite container is constituted fast effectively and impacted.
The utility model is achieved in that a kind of reduction valve, comprise valve gap, valve body, spool, the import of main spring and valve, outlet, it is characterized in that: described reduction valve is the reduction valve of the automatic Regulation decompression of slowly unlatching, push rod runs through the spool axis hole, push rod is longer than spool, the top that stretch out behind the spool on push rod top is connected with piston, piston top is the buffer cavity that valve gap and valve body are connected to form, the push rod of piston and valve core chamber partly is with main spring and pressure regulating ring, stretch out on the push rod behind the spool bottom and be with secondary spring, the push rod lower end connects sealing cover, sealing cover is provided with seal ring, effect lower seal at sealing cover bottom Returnning spring contacts with the sealing surface of valve body, the Returnning spring outside is the valve outlet port of reduction valve, spool lower cylindrical body diameter dwindle and valve body between the valve snout cavity that forms, a side of valve snout cavity connects the valve inlet union, opposite side by connecting tube outside valve body around buffer cavity to valve gap top connecting valve.A kind of prepared type fire-extinguishing device of forming by above-mentioned reduction valve, comprise power air-capacitor device and vessel valve, foamite container and vessel valve, it is characterized in that: be provided with a described reduction valve of claim 1 between described power gas vessel valve delivery outlet and the foamite container, be communicated with power gas connecting tube between the import of reduction valve and the power air-capacitor device valve outlet port, power gas outputs in the foamite container after the reduction valve decompression, directly acts on the liquid level of extinguishing agent.
The buffer cavity of described connecting tube connecting valve, the inlet of buffer cavity are pores, and this pore is communicated with the reduction valve import.The pressure regulating ring of push rod periphery in described piston and the valve core chamber valve pocket, the piston position in working order the time is controlled by the height of living in of pressure regulating ring.The action of reset spring of described reduction valve is in sealing cover, push rod and piston, and the reduction valve outlet is closed when original state, and piston is in initial position, and described main spring is in releasing state, spool is not produced thrust.The secondary spring of described reduction valve acts on spool, and secondary spring contacts with spool also by compression during original state, and secondary spring is released during working state, spool is not produced thrust.
The utility model adopts can slowly open the also reduction valve of automatic Regulation decompression, is installed on the foamite container, is communicated with power gas connecting tube between the import of reduction valve and the power air-capacitor device valve outlet port.Power gas outputs in the foamite container after the reduction valve decompression, directly acts on the liquid level of extinguishing agent.Simultaneously, open the foamite container valve, extinguishing agent can be spurted away under the state of constant voltage by the control connection pipe.Can make extinguishing agent make full use of the energy of power gas like this in effective time, improve effective fed distance of extinguishing agent, the resulting energy of extinguishing agent is more, improves its atomization, improves fire-fighting efficiency.Should slowly open the also reduction valve of automatic Regulation decompression, side at main spring is provided with a piston, at the opposite side of piston the chamber of a buffer function is arranged, and the inlet of buffer cavity is a pore, described pore aperture φ≤1mm, this pore is communicated with the reduction valve import.Under the effect of Returnning spring and secondary spring, piston is in initial position, and spool is in closed condition.When input media was imported reduction valve fast, because spool is not opened as yet, medium can or not constitute compression shock to the connection device behind the valve at once from delivery outlet output.At this moment, input media through filter and pore, slowly enters buffer cavity by a connecting tube, and its pressure is slowly raise, and promotes piston and moves down compression main spring and Returnning spring, discharges secondary spring, and spool is slowly opened.Promptly stop behind the pressure regulating ring that piston arrives is set, spool carries out normal pressure regulation decompression under the effect of main spring.The utility model has adopted can slowly open the also reduction valve of automatic Regulation decompression, the movement process of its spool and traditional reduction valve contrary, can solve the hysteresis quality of and adjustment process excessive under the original state effectively because of the initial conducting area of reduction valve, and produce high voltage power gas foamite container is formed superpressure impact, the problem of serious threat vessel safety.
The beneficial effects of the utility model are: power gas is carried out the pressure regulation decompression reach constant voltage output, can increase the fed distance of extinguishing agent having made full use of the power gas energy in the time effectively, improve its atomization, improved fire-fighting efficiency; Can slowly open reduction valve, the superpressure that when having avoided high voltage power gas to discharge fast effectively foamite container has been constituted is impacted.
Four, description of drawings:
Fig. 1 is the utility model device schematic representation;
Fig. 2 is the utility model reduction valve original state sectional view;
Fig. 3 is the utility model reduction valve working state sectional view.
In the drawings: 1, conveyance conduit; 2, extinguishing agent connecting tube; 3, foamite container valve; 4, control connection pipe; 5, reduction valve; 6, power gas connecting tube; 7, power gas vessel valve; 8, extinguishing agent fluid level measuring instrument; 9, extinguishing agent; 10, foamite container; 11, starter; 12, power air-capacitor device; 13, support; 14, connecting tube; 15, pore; 16, valve gap; 17, valve body; 18, back-up ring; 19, push rod; 20, filter; 21, buffer cavity; 22, piston; 23, main spring; 24, pressure regulating ring; 25, spool; 26, snout cavity; 27, inlet union; 28, secondary spring; 29, sealing surface; 30, seal ring; 31, Returnning spring; 32, reduction valve outlet; 33, sealing cover.
Five, embodiment:
With reference to the accompanying drawings 1, foamite container 10 and power air-capacitor device 12 are fixed on the support 13.Foamite container valve 3, extinguishing agent level instrument 8 and slowly open and the reduction valve 5 of automatic Regulation decompression is installed on the foamite container 10 are equipped with extinguishing agent 9 in the foamite container 10, have control connection pipe 4 to be connected between foamite container valve 3 and the reduction valve 5.
Power gas vessel valve 7 is installed on the power air-capacitor device 12, and starter 11 is connected with power gas vessel valve 7, in the power air-capacitor device 12 power gas is housed.Be connected with power gas connecting tube 6 between power gas vessel valve 7 outlet and reduction valve 5 imports.
Be connected with extinguishing agent connecting tube 2 between foamite container valve 3 outlet and the conveyance conduit 1.
With reference to the accompanying drawings 2, valve gap 16 and valve body 17 are connected to form valve pocket, and parts such as back-up ring 18, push rod 19, piston 22, main spring 23, pressure regulating ring 24, spool 25, secondary spring 28, seal ring 30 and Returnning spring 31 are contained in the valve pocket.Form a buffer cavity 21 between valve gap 16, valve body 17 and the piston 22, the snout cavity 26 that forms between the groove of valve body 17 and spool 25, inlet union 27 and snout cavity 26 communicate.Another mouth of snout cavity 26 communicates with buffer cavity 21 through filters 20, pore 15 by connecting tube 14.Piston 22 is pushed to initial position under the effect of Returnning spring 31, spool 25 is pushed to the position of back-up ring 18 under the effect of Returnning spring 31 and secondary spring 28, and this moment, main spring 23 was in releasing state, was in closed condition between spool 25 and the valve body 17.Seal ring 30 prevents that along with the push rod 19 formation sealing state that contacts with sealing surface 29 medium from flowing backwards under the effect of Returnning spring 31.When input media arrived snout cavity 26 by inlet union 27, because spool 25 is in closed condition, medium can not export 32 outputs to reduction valve.Simultaneously, medium arrives buffer cavity 21 by snout cavity 26 through connecting tube 14, filter 20, pore 15, and the pressure in the buffer cavity 21 is progressively raise, and piston 22 beginnings are moved to spool 25 directions.Moving of piston 22 drives seal ring 30 by push rod 19 and is separated from sealing surface 29, and secondary spring 28 is released simultaneously, and piston 22 promotes spool 25 by main spring 23, and reduction valve is slowly opened.
With reference to the accompanying drawings 3, the pressure in the buffer cavity 21 further raise, and the position until piston 22 being pushed into pressure regulating ring 24 forms output channel between seal ring 30 and the sealing surface 29, and secondary spring 28 discharges fully, and main spring 23 is compressed, to spool 25 generation thrusts.Medium is exported to reduction valve outlet 32 through inlet union 27, snout cavity 26.At this moment, the medium delivery pressure produces thrust to the opposite side of spool 25, reaches a kind of balance between the thrust of this thrust and 23 pairs of spools 25 of main spring, and promptly reduction valve is implemented the pressure regulation decompression to the delivery pressure of medium.
Receive the actuating signal of Fire Services Communication Centre when starter 11 after, power gas vessel valve 7 is opened in starter 11 actions, is stored in the driven strength vessel valve 7 outlet ejections of high voltage power gas in the power air-capacitor device 12, arrives reduction valve 5 inlets through power gas connecting tube 6.Reduction valve 5 spool 25 when original state is in closed condition, and high voltage power gas can directly not enter in the foamite container 10.Power gas enters buffer cavity 21 through connecting tube 14, and pressure progressively rises, and piston 22 moves down, and slowly pushes spool 25 open, and reduction valve 5 is opened.After reduction valve 5 was opened, power gas acted on the liquid level of extinguishing agent 9 in the laggard agent container 10 of going into to put out a fire that reduces pressure.Meanwhile, foamite container valve 3 is opened under the effect of power gas, and extinguishing agent enters conveyance conduit 1 through foamite container valve 3, extinguishing agent connecting tube 2 under the promotion of power atmospheric pressure, until protected place, spurts vaporization through nozzle and implements fire extinguishing.
Claims (6)
1. reduction valve, comprise valve gap, valve body, spool, the import of main spring and valve, outlet, it is characterized in that: described reduction valve is the reduction valve of the automatic Regulation decompression of slowly unlatching, push rod runs through the spool axis hole, push rod is longer than spool, the top that stretch out behind the spool on push rod top is connected with piston, piston top is the buffer cavity that valve gap and valve body are connected to form, the push rod of piston and valve core chamber partly is with main spring and pressure regulating ring, stretch out on the push rod behind the spool bottom and be with secondary spring, the push rod lower end connects sealing cover, sealing cover is provided with seal ring, effect lower seal at sealing cover bottom Returnning spring contacts with the sealing surface of valve body, the Returnning spring outside is the valve outlet port of reduction valve, spool lower cylindrical body diameter dwindle and valve body between the valve snout cavity that forms, a side of valve snout cavity connects the valve inlet union, opposite side by connecting tube outside valve body around buffer cavity to valve gap top connecting valve.
2. reduction valve according to claim 1 is characterized in that: the buffer cavity of described connecting tube connecting valve, the inlet of buffer cavity are pores, described pore aperture φ≤1mm, and this pore is communicated with the reduction valve import.
3. reduction valve according to claim 1 is characterized in that: the pressure regulating ring of push rod periphery in described piston and the valve core chamber valve pocket, the piston position in working order the time is controlled by the height of living in of pressure regulating ring.
4. reduction valve according to claim 1, it is characterized in that: the action of reset spring of described reduction valve is in sealing cover, push rod and piston, and the reduction valve outlet is closed when original state, and piston is in initial position, described main spring is in releasing state, spool is not produced thrust.
5. reduction valve according to claim 1 is characterized in that: the secondary spring of described reduction valve acts on spool, and secondary spring contacts with spool also by compression during original state, and secondary spring is released during working state, spool is not produced thrust.
6. a kind of prepared type fire-extinguishing device of forming by the described reduction valve of claim 1, comprise power air-capacitor device and vessel valve, foamite container and vessel valve, it is characterized in that: be provided with a described reduction valve of claim 1 between described power gas vessel valve delivery outlet and the foamite container, be communicated with power gas connecting tube between the import of reduction valve and the power air-capacitor device valve outlet port, power gas outputs in the foamite container after the reduction valve decompression, directly acts on the liquid level of extinguishing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620041369 CN200952591Y (en) | 2006-04-27 | 2006-04-27 | Pressure-relief valve and stand-by pressing fire fighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620041369 CN200952591Y (en) | 2006-04-27 | 2006-04-27 | Pressure-relief valve and stand-by pressing fire fighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200952591Y true CN200952591Y (en) | 2007-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620041369 Expired - Lifetime CN200952591Y (en) | 2006-04-27 | 2006-04-27 | Pressure-relief valve and stand-by pressing fire fighting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200952591Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383447C (en) * | 2006-04-27 | 2008-04-23 | 上海金盾实业集团有限公司 | Prepared type fire-extinguishing device |
| CN106015714A (en) * | 2016-06-14 | 2016-10-12 | 浙江信达可恩消防实业有限责任公司 | Constant-pressure container valve |
| CN109432647A (en) * | 2018-11-26 | 2019-03-08 | 中色科技股份有限公司 | Container valve for driving gas cylinder group of carbon dioxide fire extinguishing system |
-
2006
- 2006-04-27 CN CN 200620041369 patent/CN200952591Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383447C (en) * | 2006-04-27 | 2008-04-23 | 上海金盾实业集团有限公司 | Prepared type fire-extinguishing device |
| CN106015714A (en) * | 2016-06-14 | 2016-10-12 | 浙江信达可恩消防实业有限责任公司 | Constant-pressure container valve |
| CN106015714B (en) * | 2016-06-14 | 2019-10-18 | 浙江信达可恩消防实业有限责任公司 | Constant pressure type container value |
| CN109432647A (en) * | 2018-11-26 | 2019-03-08 | 中色科技股份有限公司 | Container valve for driving gas cylinder group of carbon dioxide fire extinguishing system |
| CN109432647B (en) * | 2018-11-26 | 2023-06-30 | 中色科技股份有限公司 | Container valve for driving gas bottle group of carbon dioxide fire extinguishing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080423 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |