CN201701675U - Fire extinguishing device - Google Patents
Fire extinguishing device Download PDFInfo
- Publication number
- CN201701675U CN201701675U CN2010202395008U CN201020239500U CN201701675U CN 201701675 U CN201701675 U CN 201701675U CN 2010202395008 U CN2010202395008 U CN 2010202395008U CN 201020239500 U CN201020239500 U CN 201020239500U CN 201701675 U CN201701675 U CN 201701675U
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- CN
- China
- Prior art keywords
- top cover
- extinguishing device
- cushion chamber
- utility
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model relates to a fire extinguishing device, which comprises a casing, a top cover, a porous part, an initiator and a baffle plate. The top cover is fixed on the top of the casing, a buffer cavity for reducing recoil is arranged inside the top cover, the porous part fixed onto the top cover is contained inside the casing, and a combustion chamber formed by the porous part and the top cover is communicated with the buffer cavity. The initiator fixed onto the top cover is contained inside a cavity formed by the porous part and the top cover, and the baffle plate is connected to an opening at the bottom of the casing in a sealing manner. The buffer cavity is communicated with the combustion chamber via a Lawal hole, and the buffer cavity is an annular cavity or comprises a plurality of buffer cavities in annular concentric arrangement or a plurality of buffer cavities in circumferential arrangement. Accordingly, the fire extinguishing device realizes small recoil by the aid of the buffer cavity of the top cover, improves use safety and further enhances fire extinguishing capacity.
Description
Technical field
The utility model relates to a kind of extinguishing device, relates in particular to a kind ofly can reduce recoil, even recoilless extinguishing device.
Background technology
Therefore existing supersonic speed extinguishing device or transonic speed extinguishing device axially spurt mostly, are bound to produce recoil, if recoil is too big and cause the fire extinguisher scope of application to be restricted when starting.The extinguishing device that uses at large space should be does not satisfy and reduce recoil to weaken forward thrust, but the dry powder discharge rate of wishing along with fire extinguisher be big more, and speed is fast more, will cause increasing recoil, makes that the building use in certain intensity is limited.
For example, the course of work of existing super-sonic dry-chemical fire extinguisher is: initiator starts after receiving enabling signal, in gas generator, form high temperature and high pressure gas, by the spray orifice above the porous member, air-flow is quickened to be supersonic airstream, supersonic airstream is further pulverized dry powder disturbance, impact, rushes at scene of a fire fire extinguishing after the refinement at a high speed, has produced recoil thereupon.
Therefore owing to the existence of very big recoil, make the scope of application of dry powder extinguishing installation be defined, and be difficult to be implemented in a plurality of extinguishing devices of spatial arrangement.
The utility model content
The purpose of this utility model is at the defective of existing extinguishing device, and a kind of extinguishing device is provided, and has only small recoil when realizing extinguishing device work, even Recoilless.
For achieving the above object, the utility model provides a kind of extinguishing device, and described extinguishing device comprises:
Housing;
Top cover, described top cover is fixed on described case top, and has the cushion chamber that reduces recoil in the described top cover;
Porous member is fixed on the described top cover, be contained in the described housing, and the combustion chamber and the described cushion chamber of described porous member and top cover formation is conducted.
Described extinguishing device also comprises: initiator, be fixed on the described top cover, and be contained in the cavity of described porous member and top cover formation; Baffle plate, sealing-in is at described housing bottom opening.Described cushion chamber is conducted by hole, Lavalle and described combustion chamber.
Described cushion chamber is a toroidal cavity.Described cushion chamber is several cushion chambers that annular concentric is arranged.Described cushion chamber is several cushion chambers along circumferential arrangement.Described several cushion chambers are conducted.
Therefore, the utility model extinguishing device utilizes the cushion chamber of top cover to realize little recoil, so improved the safety in utilization of extinguishing device, can further improve extinguishing ability.
Description of drawings
Fig. 1 is the structural representation of the utility model extinguishing device;
Fig. 2 is the cap structure schematic diagram of the utility model extinguishing device;
Fig. 3 is the schematic diagram of the porous member of the utility model extinguishing device;
Fig. 4 is the schematic diagram of the spray orifice of the utility model extinguishing device;
Fig. 5 is the schematic diagram of the wiring pillar starter of the utility model extinguishing device;
Fig. 6 is one of cushion chamber schematic diagram of the utility model extinguishing device;
Fig. 7 be the utility model extinguishing device the cushion chamber schematic diagram two;
Fig. 8 be the utility model extinguishing device the cushion chamber schematic diagram three;
Fig. 9 be the utility model extinguishing device the cushion chamber schematic diagram four.
The specific embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
In order to reduce the recoil that is produced when extinguishing device moves, the utility model is to realize by the improvement to gas generator.
Fig. 1 is the structural representation of the utility model extinguishing device, and as shown in the figure, extinguishing device of the present utility model specifically comprises: housing 1, top cover 2 and porous member 3, top cover 2 are fixed on housing 1 top, and have cushion chamber 20 in the top cover 2; Porous member 3 is fixed on the top cover 2, be contained in the housing 1, and the combustion chamber 30 of porous member 3 and top cover 2 formation is conducted with cushion chamber 20.
The utility model is to be optimized design by the structure to top cover, is provided with the recoil that cushion chamber reduces extinguishing device when action in top cover.Cushion chamber and combustion chamber are conductings, and when extinguishing device moved, this cushion chamber can the holding portion combustion gas, and these combustion gas enter cushion chamber at a high speed by the direction with extinguishing chemical dry powder reverse movement.According to the impulse conservation law theorem, the momentum of dry powder is offset a part by the high velocity air opposite with its direction of motion, the recoil when having reduced the extinguishing device action like this.
Again as shown in Figure 1, extinguishing device of the present utility model also comprises initiator 4 and baffle plate 5, and refers again to the cap structure schematic diagram of Fig. 2 the utility model extinguishing device, and cushion chamber 20 is conducted by hole, Lavalle 21 and combustion chamber 30.
Concrete, the crown center of top cover 2 has a rib-loop hole, the wiring pillar starter 7 of in this screwed hole, packing into, the inside of top cover 2 is provided with cushion chamber 20, one annular nose is arranged in the bottom of top cover 2, porous member 3 is an evagination circular arc camber shape, and its upper end is connected with the annular nose of the bottom of top cover 2.Housing 1 is a circular arc trumpet type body, is connected for arc between the side of housing 1 and end face; The lower end of housing 1 combines with top cover 2 and porous member 3, and the lower end is by baffle plate 5 sealings, and filling is with firing-fighting medium 6, for example powder extinguishing agent in housing 1.
As shown in Figure 3, the schematic diagram of the porous member of the utility model extinguishing device, on the arc-shaped curved surface of porous member 3, be distributed with some spray orifices 31, the spout static pressure that spray orifice 31 is designed under the situation of the face of land equals the atmospheric pressure that the face of land is located, with the pressure differential in the external world be 0, as shown in Figure 4, the schematic diagram of the spray orifice of the utility model extinguishing device, the shape of spray orifice 31 comprise the bell part that extends out 310 and in the arch section 311 that contracts, be slick and sly the engagement between bell part 310 and the arch section 311.
Fig. 5 is the schematic diagram of the wiring pillar starter of the utility model extinguishing device, and the top of the starter of wiring pillar as shown in the figure is hexagonal body 71, and the bottom links to each other with a cylinder 72, and pin thread 73 is arranged on the cylinder 72; Cylinder 72 bottoms link to each other with second cylinder 74, and filling is with gas generating agent 76 in second cylinder 74; In second cylinder, also be provided with the igniter head 75 that links to each other with lead.
The cushion chamber of the utility model extinguishing device the comparison freedom is set, as shown in Figure 6, can be a loop buffer chamber 20, as shown in Figure 7, can be several cushion chambers 20 of concentric arrangement, also can be several cushion chambers 20, and if several cushion chambers can be in inner mutual conduction or independent not conducting as Fig. 8 or shown in Figure 9 along circumferential arrangement.
The concrete course of work of the utility model extinguishing device is as follows:
After fire takes place, be installed in on-the-spot inductor and detect the condition of a fire, send a signal to controller, there had been fire at the judgement scene after controller received signal, just send enabling signal and give extinguishing device, after device received enabling signal, wiring pillar starter at first started, the powder charge of initiator inside is ignited and is produced a large amount of combustion gas then, produces high temperature and high pressure gas in fuel chamber.The high temperature of a part, gases at high pressure quicken combustion gas by being arranged on the jet pipe on the porous member, reach supersonic speed, impact firing-fighting medium, make it disturbance, fragmentation, atomizing.Continuous burning along with powder charge in the initiator, a large amount of combustion gas are released, increase along with the extinguishing device internal pressure, baffle plate is by compression failure, the firing-fighting medium that is activated, and for example dry powder is gone out extinguishing device thereupon, spray to the scene of a fire at a high speed, rapid cutting flame, secluding air is finished fire-extinguishing function concurrently.
Simultaneously, in this process, be pressed into a part of gas at a high speed in high temperature, the gases at high pressure cushion chamber in top cover, this process can be offset the recoil of a part of device.Gas high speed thrust forward, will inevitably produce momentum forward, keep the weighing apparatus principle according to momentum, obtaining momentum mv during the dry powder ejection equates with the momentum Ft of extinguishing device, be Ft=Mv '=mv, M is the quality of extinguishing device, to be dry powder obtain speed v from spraying the back to t ' to time that static (or movement of falling object) experienced, F is exactly a recoil, it is the power that acts in the extinguishing device support (fixing point), the power that recoil on the extinguishing device and extinguishing device are recommended dry powder is active force and reaction force each other, and they are to occur in pairs.When in the top cover cushion chamber being arranged, in the time of the dry powder ejection, some gas moves round about, enters cushion chamber, and by the compressibility of above-mentioned principle and air, the propulsive thrust during the extinguishing device action is alleviated.So this cushion chamber can holding portion gases at high pressure and reach and reduce extinguishing device and make the recoil that the time spent produces.
Firing-fighting medium dry powder has been finished the secondary refinement in this said process, mainly contains following several form:
The effect that dry powder is subjected to high-speed jet is promoted at a high speed, forms high speed dry powder stream, because the speed difference of dry powder and air, dry powder is shredded into the dry powder particulate.
The coverage rate of high-speed jet is bigger, and inner walls is pointed near the high-speed jet direction that the jet pipe on the porous member at top comes out in the position, and part dry powder strikes on the inner walls under the high-speed jet effect, and dry powder particle produces the dry powder particulate because of collision.
Dry powder self quickens to move downward, and high-speed jet promotes dry powder on protected goods and materials or ground, and dry powder particle produces the dry powder particulate because of collision.
The high-speed jet that a plurality of jet pipes of the supersonic speed gas generator of being made up of porous member, top cover and initiator eject is taper and penetrates, each jet awl all intersects mutually, dry powder is under jet promotes, form two strands of similar dry powder streams in the infall collision, per share dry powder stream all forms the dry powder particulate
There is a tapped through hole in the top cover central authorities that are provided with cushion chamber, inner loop at top cover is furnished with cavity around the central, threaded hole, this cavity links to each other with combustion chamber adjacent by the hole, Lavalle that is arranged on cap base, quickens air-flow, the momentum that produces when offsetting the dry powder ejection.
Be distributed with a plurality of spray orifices on the outer convex arc surface of porous member, in contract and extend out.Can form supersonic airstream when the high-temperature high-pressure fuel gas of generation is by spray orifice in the combustion chamber; Also can form supersonic airstream by the interior taper spray orifice that contracts.Between the spray orifice trunnion can be arranged, also can not have trunnion.This air-flow firing-fighting medium disturbance, fragmentation, atomizing after spray feed to the scene of a fire, have good fire extinguishing effect.
Wiring pillar starter comprises igniter head, gas generating agent and the coyote hole of being with doublet cord.Wiring pillar starter and top cover, porous member closely cooperate, and form an airtight combustion chamber and can bear certain pressure and temperature.The gas generating agent of starter can be single coyote hole structure, also can be the sequence that the several separate coyote hole is formed.
The utility model extinguishing device is because reduced recoil, so improved the safety in utilization of extinguishing device, reduced the requirement of strength of extinguishing device, helped fire-fighting technique is generalized to general building place, enlarged the range of application of supersonic speed extinguishing device support of buildings; Prolonged the formation of supersonic airstream and to dry powder action time, better to the atomizing effect of dry powder, can further improve extinguishing ability.
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the spirit and scope of technical solutions of the utility model.
Claims (7)
1. extinguishing device is characterized in that described extinguishing device comprises:
Housing;
Top cover, described top cover is fixed on described case top, and has the cushion chamber that reduces recoil in the described top cover;
Porous member is fixed on the described top cover, be contained in the described housing, and the combustion chamber and the described cushion chamber of described porous member and top cover formation is conducted.
2. extinguishing device according to claim 1 is characterized in that described extinguishing device also comprises:
Initiator is fixed on the described top cover, is contained in the cavity of described porous member and top cover formation;
Baffle plate, sealing-in is at described housing bottom portion opening.
3. extinguishing device according to claim 1 is characterized in that described cushion chamber is conducted by hole, Lavalle and described combustion chamber.
4. extinguishing device according to claim 1 is characterized in that described cushion chamber is a toroidal cavity.
5. extinguishing device according to claim 1 is characterized in that described cushion chamber is several cushion chambers that annular concentric is arranged.
6. extinguishing device according to claim 1 is characterized in that described cushion chamber is several cushion chambers along circumferential arrangement.
7. according to claim 6 or 7 described extinguishing devices, it is characterized in that described several cushion chambers are conducted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202395008U CN201701675U (en) | 2010-06-28 | 2010-06-28 | Fire extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202395008U CN201701675U (en) | 2010-06-28 | 2010-06-28 | Fire extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201701675U true CN201701675U (en) | 2011-01-12 |
Family
ID=43438819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202395008U Expired - Fee Related CN201701675U (en) | 2010-06-28 | 2010-06-28 | Fire extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201701675U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294095A (en) * | 2010-06-28 | 2011-12-28 | 陕西兰德森茂消防科技有限公司 | Fire extinguishing apparatus |
| CN102294094A (en) * | 2010-06-28 | 2011-12-28 | 陕西兰德森茂消防科技有限公司 | Fire extinguishing plant |
-
2010
- 2010-06-28 CN CN2010202395008U patent/CN201701675U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294095A (en) * | 2010-06-28 | 2011-12-28 | 陕西兰德森茂消防科技有限公司 | Fire extinguishing apparatus |
| CN102294094A (en) * | 2010-06-28 | 2011-12-28 | 陕西兰德森茂消防科技有限公司 | Fire extinguishing plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20190628 |