CN213077293U - Novel annular cylinder type fire extinguishing agent spraying device of vortex-spraying fire truck - Google Patents
Novel annular cylinder type fire extinguishing agent spraying device of vortex-spraying fire truck Download PDFInfo
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- CN213077293U CN213077293U CN202021533702.3U CN202021533702U CN213077293U CN 213077293 U CN213077293 U CN 213077293U CN 202021533702 U CN202021533702 U CN 202021533702U CN 213077293 U CN213077293 U CN 213077293U
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Abstract
The utility model discloses a novel annular cylinder formula turbojet fire engine fire extinguishing agent injection apparatus, including fire extinguishing agent injection section and the spray tube convergence section of being connected, fire extinguishing agent injection section is including mixing chamber and a plurality of supply tube interface in advance, mixes the chamber in advance and includes inner chamber wall and exocoel wall, and exocoel wall cover is established in the inner chamber wall outside, has seted up a plurality of fire extinguishing agent jet orifices on the inner chamber wall, on the outer chamber wall of a plurality of supply tube interface installations. The utility model discloses a ring section of thick bamboo type fire extinguishing agent injection apparatus, the design adopts inner tube diameter and turbojet engine aiutage diameter to coincide, plus with the ring section of thick bamboo type injection apparatus of the segmentation combination form of the convergence spray tube that quick-release ring type connected.
Description
Technical Field
The utility model belongs to the technical field of the fire control unit, especially, relate to a novel annular cylinder formula turbojet fire engine fire extinguishing agent injection device.
Background
The fire control ability and the efficiency of putting out a fire of the turbojet fire engine are improved by more than ten times than the conventional fire engine, the turbojet fire engine breaks through the difficulty that the spraying power of the conventional fire engine can not realize the remote spraying of the atomized water/the fire extinguishing agent, and the fire extinguishing agent spraying cylinder is an important device for realizing the remote and large-coverage fire extinguishing of the turbojet fire engine.
At present, the publication No. CN202028082U, entitled "an inner spraying barrel capable of increasing the fire extinguishing agent spraying range of a turbojet 7 series fire engine", adopts an inner and outer barrel combined spraying barrel structure, the outer barrel is an exhaust barrel of the turbojet engine, the inner barrel is designed with an extinguishing agent spraying port to solve the problem of water flow divergence, the inner spraying barrel structure is used as an implanted device and extends into an exhaust passage of the engine to influence the uniformity of an exhaust flow field behind a turbine of the engine to a certain extent, so that the difference between the exhaust flow speed between the outer barrel and the inner barrel and the flow speed of a water-gas mixture in the inner barrel is caused, the uniform pressure field and the speed distribution of the exhaust gas of the original turbojet engine are destroyed to a certain extent, meanwhile, the layered structure of the inner barrel and the outer barrel enables only the inner barrel to spray a mixed flow containing water/extinguishing agent, the exhaust flow between the outer barrel and the inner barrel does not contain water or, in the working process of the turbojet fire engine, as the fire extinguishing agent of the inner cylinder takes away certain exhaust heat, huge temperature difference between the inner cavity wall and the outer cavity wall is caused, so that the inner cylinder and the outer cylinder are subjected to certain thermal stress and generate thermal deformation, the maintenance period of the turbojet fire engine is shortened, and the maintenance cost is overhigh. Meanwhile, the fire extinguishing agent sprayed by the fire extinguishing agent nozzle of the exhaust cylinder device has the problem of uneven spraying to a certain extent, and the mixing of the high-speed exhaust and the fire extinguishing agent of the turbojet engine is influenced.
On the basis of the structural design of the inner and outer cylinders, the publication No. CN102078672A, entitled vortex spray injection cylinder with cooling device, realizes the purpose of cooling the injection cylinder by adding a cooling water circulation system between the inner and outer cylinders. It has increased the complexity and the weight of a spray barrel structure, need increase cooling water circulation system at the fire engine simultaneously for control system is more complicated, moreover, for preventing that recirculated cooling water from flowing into engine exhaust passage, must seal inner and outer section of thick bamboo intermediate layer both ends, and this kind of structure makes turbojet engine exhaust sectional area reduce by a wide margin, causes huge influence to the operating condition of engine, has disturbed the design state of engine, probably causes huge damage to turbojet engine.
In summary, the problems that the service life cycle of an inner cylinder is short due to long-time heating, the state of a turbojet engine is influenced by the disturbance of the inner cylinder to the exhaust flow field behind a turbine, and energy loss and uneven mixing are caused by the fact that high-speed exhaust and fire extinguishing agents are not mixed between the inner cylinder and the outer cylinder exist in the inner-outer double-layer injection cylinder structure used by the turbojet series fire engine at the present stage.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide one kind and adopt inner tube diameter and turbojet engine aiutage diameter to coincide, plus with the novel ring section formula turbojet fire engine fire extinguishing agent injection apparatus of the segmentation combination form of the convergence spray tube that quick-release ring type connected.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a novel annular cylinder formula turbojet fire engine fire extinguishing agent injection apparatus, sprays section and spray tube convergence section including the fire extinguishing agent that can dismantle the connection, fire extinguishing agent sprays the section including premixing chamber and a plurality of supply pipe interface, and premixing chamber includes inner chamber wall and exocoel wall, and exocoel wall cover is established in the inner chamber wall outside, has seted up a plurality of fire extinguishing agent jet orifices on the inner chamber wall, on a plurality of supply pipe interface installation exocoel walls.
Preferably, the premixing chamber further comprises a first mounting edge and a second mounting edge which are respectively mounted at two ends of the inner cavity wall and the outer cavity wall, the first mounting edge, the second mounting edge, the inner cavity wall and the outer cavity wall jointly form the premixing chamber, a plurality of air inlets are formed in the first mounting edge, and the second mounting edge is connected with one end of the nozzle convergence section.
Preferably, threaded holes are formed in the first mounting edge, the second mounting edge and the spray pipe convergence section, and the second mounting edge is connected with one end of the spray pipe convergence section through a bolt.
Preferably, the cross-sectional area of the accelerating convergence tube decreases from the end close to the second mounting edge to the end far from the second mounting edge.
Preferably, the device further comprises a flange interface arranged at the tail end of the supply pipe interface.
Preferably, the plurality of fire suppressant spray holes are evenly distributed over the inner chamber wall.
Compared with the prior art, the utility model has the advantages of:
(1) the utility model adopts the sectional combination form of the inner cylinder diameter matched with the exhaust funnel diameter section of the turbojet engine and the convergent nozzle connected in a quick-release ring type, which is convenient for disassembly, because the sectional area of the convergent section of the nozzle is continuously reduced along the exhaust flow direction, the pressure of the exhaust-fire extinguishing agent mixture flow is gradually reduced, and the speed is gradually increased, thereby achieving the purposes of increasing the nozzle speed and improving the jet distance;
(2) the utility model discloses gas air inlet is seted up on first installation limit and second installation limit, so that high-speed gas gets into the premixing cavity behind the turbine of turbojet engine, make fire extinguishing agent carry out abundant mixing in premixing cavity, high-speed high-pressure gas stagnates in premixing cavity after simultaneously, the dynamic pressure reduces, the static pressure risees, for premixing cavity pressure boost, make the premix of gas-fire extinguishing agent spray into turbojet engine exhaust flow field along the fire extinguishing agent jet orifice, and then spray into spray tube convergent section along with engine exhaust wake together, water and foam extinguishing agent mix in premixing cavity and flow, take away the heat on outer chamber wall, inner chamber wall, first installation limit and second installation limit through the heat exchange, avoid the fire extinguishing agent jet section long time in high temperature operating condition, in order to improve the life of ring cylinder type fire extinguishing agent injection apparatus, reduce its maintenance cost;
(3) the utility model discloses fire extinguishing agent jet orifice is along inner chamber wall surface evenly distributed, and after water and foam extinguishing agent evenly mix through the blowout of fire extinguishing agent jet orifice, form even fire extinguishing agent mixture, afterwards, fast-speed engine exhaust flows through the fire extinguishing agent flow field, forms the full jet flow cross-section, forms even exhaust-fire extinguishing agent mixture after mixing once more and flows.
Drawings
FIG. 1 is a schematic structural view of a novel annular-cylinder type fire extinguishing agent spraying device of a vortex-spraying fire engine of the utility model;
description of reference numerals:
1. a fire extinguishing agent spraying section 2, a spray pipe converging section,
3. 3-1 parts of a premixing cavity, 3-2 parts of an inner cavity wall, 3-3 parts of an outer cavity wall, 3-4 parts of a first mounting edge, 3-5 parts of a second mounting edge, 3-6 parts of an air inlet and 3-6 parts of a fire extinguishing agent injection hole;
4. supply pipe interface, 5, flange interface, 6-threaded hole.
Detailed Description
The following description of the embodiments of the present invention is provided in connection with the following embodiments:
it should be noted that the structures, ratios, sizes, etc. illustrated in the present specification are only used to cooperate with the contents disclosed in the specification for the understanding and reading of the people skilled in the art, and are not used to limit the limit conditions that the present invention can be implemented, and any modifications of the structures, changes of the ratio relationships or adjustments of the sizes should still fall within the scope that the technical contents disclosed in the present invention can cover without affecting the functions and the achievable purposes of the present invention.
Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in figure 1, the novel annular-cylinder type fire extinguishing agent spraying device for the turbojet fire engine comprises a fire extinguishing agent spraying section 1 and a spray pipe convergence section 2 which are detachably connected, wherein the fire extinguishing agent spraying section 1 comprises a premixing chamber 3 and a plurality of supply pipe interfaces 4, the premixing chamber 3 comprises an inner chamber wall 3-1 and an outer chamber wall 3-2, the outer chamber wall 3-2 is sleeved on the outer side of the inner chamber wall 3-1, the inner chamber wall 3-1 is provided with a plurality of fire extinguishing agent spraying holes 3-6, and the plurality of supply pipe interfaces 4 are installed on the outer chamber wall 3-2. The water and the foam can be supplied by the supply pipe interfaces in an interchangeable way, and can also be supplied independently, and in addition, according to different working states of different types of turbojet engines, a plurality of supply pipe interfaces 4 can be designed to be welded along the outer cavity wall 3-2 or the drift diameter of the supply pipe interfaces 4 can be adjusted to adapt to requirements.
Specifically, the premixing chamber 3 further comprises a first mounting edge 3-3 and a second mounting edge 3-4 which are respectively mounted at two ends of the inner cavity wall 3-1 and the outer cavity wall 3-2, the first mounting edge 3-3, the second mounting edge 3-4, the inner cavity wall 3-1 and the outer cavity wall 3-2 jointly form the premixing chamber 3, the first mounting edge 3-3 is provided with a plurality of air inlets 3-5, and the second mounting edge 3-4 is connected with one end of the nozzle convergence section 2. The air inlet 3-5 is designed so that the high-speed gas after the turbine of the turbojet engine enters the premixing chamber 3 and is mixed with the fire extinguishing agent in the premixing chamber 3, meanwhile, after high-speed and high-pressure gas stagnates in the premixing cavity 3, the dynamic pressure is reduced, the static pressure is increased, the premixing cavity is pressurized, so that a gas-fire suppressant premix is injected into the turbojet exhaust gas flow field along fire suppressant injection holes 3-6, then is sprayed into the nozzle convergent section 2 along with the exhaust flow of the engine, the water and the foam extinguishing agent are mixed and flow in the premixing chamber 3, the heat of the outer cavity wall 3-2, the inner cavity wall 3-1, the first mounting edge 3-3 and the second mounting edge 3-4 is taken away through heat exchange, so that the fire extinguishing agent spraying section 1 is prevented from being in a high-temperature working condition for a long time, the service life of the annular cylinder type fire extinguishing agent spraying device is prolonged, and the maintenance cost of the annular cylinder type fire extinguishing agent spraying device is reduced.
Specifically, threaded holes are formed in the first mounting edge 3-3, the second mounting edge 3-4 and the spray pipe convergence section 2, and the second mounting edge 3-4 is connected with one end of the spray pipe convergence section 2 through a bolt. The threaded hole on the first mounting edge 3-3 can be used for connecting with a turbojet engine exhaust casing. The annular cylinder type injection device and the exhaust cylinder of the turbojet engine and the spray pipe convergence section 2 and the fire extinguishing agent injection section 1 are detachably connected, so that the disassembly, the assembly and the replacement are convenient. And a detachable connection mode such as a quick-release ring can also be adopted.
Specifically, the cross-sectional area of the accelerating convergence tube 2 is gradually reduced from the end close to the second mounting edge 2-4 to the end far from the second mounting edge 3-4. As the sectional area of the spray pipe convergence section 2 is continuously reduced along the exhaust flow direction, the pressure of the exhaust-fire extinguishing agent mixture flow is gradually reduced, and the speed is gradually increased, so as to achieve the purposes of increasing the initial speed of the spray nozzle and improving the spray distance.
Specifically, the fire extinguishing system further comprises a flange interface 5 arranged at the tail end of the supply pipe interface 4, and is convenient to be connected with an outlet of a fire extinguishing agent supply box.
Specifically, a plurality of fire suppressant spray holes 3-6 are evenly distributed on the inner chamber wall 3-1. The fire extinguishing agent injection holes 3-6 are uniformly distributed along the surface of the inner cavity wall 3-1, water and foam fire extinguishing agent are sprayed out through the fire extinguishing agent injection holes 3-6 to form a uniform fire extinguishing agent flow field, and then high-speed engine exhaust flows through the fire extinguishing agent flow field to form a full-jet-flow section and uniformly mixed exhaust-fire extinguishing agent.
The sizes of the pipe diameter of the annular cylinder type fire extinguishing agent injection device, the pipe diameters of the fire extinguishing agent injection holes 3-6, the air inlet holes 3-5, the water and foam fire extinguishing agent supply pipe interfaces 4, the convergence angle of the spray pipe convergence section 2 and the like can be adjusted according to different turbojet engine performance parameters, user or fire requirements and the like during design and manufacture, and if large coverage is needed for fire extinguishing, the model with the relatively small convergence angle of the spray pipe convergence section 2 can be selected; if the fire extinguishing agent is required to be sprayed remotely, a model with a relatively large convergence angle can be selected.
To sum up, the utility model adopts the annular cylinder type fire extinguishing agent injection device, the annular cylinder type injection device with the inner cylinder diameter matched with the exhaust pipe diameter of the turbojet engine is designed, the segmented combination form of the detachable convergent nozzle is added, the supply pipe interface is welded on the wall surface of the outer cavity, and a large number of fire extinguishing agent (water or foam) injection holes are designed on the wall surface of the inner cavity; an air inlet is formed in the direction facing the exhaust inflow direction to ensure the pre-mixing of water and foam, the mixed fire extinguishing agent in the inner and outer cylinder clamp layers is pressurized, the water and the foam are used as the fire extinguishing agent and cooling working media in the wall surface clamp layers, the heat of the injection cylinder is taken away, and the service life of the injection cylinder is prolonged.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, and that the scope of the invention is defined by the appended claims.
Claims (6)
1. The utility model provides a novel annular cylinder formula turbojet fire engine fire extinguishing agent sprays device which characterized in that: the fire extinguishing agent spraying device comprises a fire extinguishing agent spraying section and a spray pipe convergence section which are detachably connected, wherein the fire extinguishing agent spraying section comprises a premixing chamber and a plurality of supply pipe interfaces, the premixing chamber comprises an inner chamber wall and an outer chamber wall, the outer chamber wall is sleeved on the outer side of the inner chamber wall, a plurality of fire extinguishing agent spraying holes are formed in the inner chamber wall, and the plurality of supply pipe interfaces are arranged on the outer chamber wall.
2. The novel annular cylinder type fire extinguishing agent spraying device of the vortex spraying fire fighting truck as claimed in claim 1, wherein: the premixing cavity further comprises a first installation edge and a second installation edge which are respectively installed at two ends of the inner cavity wall and the outer cavity wall, the first installation edge, the second installation edge, the inner cavity wall and the outer cavity wall jointly form the premixing cavity, a plurality of air inlets are formed in the first installation edge, and the second installation edge is connected with one end of the spray pipe convergence section.
3. The novel annular cylinder type fire extinguishing agent spraying device of the vortex spraying fire fighting truck as claimed in claim 2, wherein: threaded holes are formed in the first mounting edge, the second mounting edge and the spray pipe convergence section, and the second mounting edge is connected with one end of the spray pipe convergence section through a bolt.
4. The novel annular cylinder type fire extinguishing agent spraying device of the vortex spraying fire fighting truck as claimed in claim 1 or 3, wherein: the cross-sectional area of the nozzle convergent tube is gradually reduced from one end close to the second mounting edge to one end far away from the second mounting edge.
5. The novel annular cylinder type fire extinguishing agent spraying device of the vortex spraying fire fighting truck as claimed in claim 1, wherein: and the flange interface is arranged at the tail end of the supply pipe interface.
6. The novel annular cylinder type fire extinguishing agent spraying device of the vortex spraying fire fighting truck as claimed in claim 1, wherein: the fire extinguishing agent injection holes are uniformly distributed on the inner cavity wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021533702.3U CN213077293U (en) | 2020-07-29 | 2020-07-29 | Novel annular cylinder type fire extinguishing agent spraying device of vortex-spraying fire truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021533702.3U CN213077293U (en) | 2020-07-29 | 2020-07-29 | Novel annular cylinder type fire extinguishing agent spraying device of vortex-spraying fire truck |
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| Publication Number | Publication Date |
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| CN213077293U true CN213077293U (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021533702.3U Active CN213077293U (en) | 2020-07-29 | 2020-07-29 | Novel annular cylinder type fire extinguishing agent spraying device of vortex-spraying fire truck |
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| CN (1) | CN213077293U (en) |
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- 2020-07-29 CN CN202021533702.3U patent/CN213077293U/en active Active
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