CN111388907A - Bidirectional self-supply type fire extinguishing system of helicopter - Google Patents
Bidirectional self-supply type fire extinguishing system of helicopter Download PDFInfo
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- CN111388907A CN111388907A CN202010191235.9A CN202010191235A CN111388907A CN 111388907 A CN111388907 A CN 111388907A CN 202010191235 A CN202010191235 A CN 202010191235A CN 111388907 A CN111388907 A CN 111388907A
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 113
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 100
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 238000005086 pumping Methods 0.000 claims abstract description 27
- 239000007787 solid Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 230000001629 suppression Effects 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000013019 agitation Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
- A62C3/0228—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires with delivery of fire extinguishing material by air or aircraft
- A62C3/0235—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires with delivery of fire extinguishing material by air or aircraft by means of containers, e.g. buckets
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/002—Apparatus for mixing extinguishants with water
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention provides a bidirectional self-supplying fire extinguishing system for a helicopter, which comprises: the fire extinguishing system comprises a bucket hung on a helicopter, a first water pumping system, a fire extinguishing agent dissolving tank and a second water pumping system; the first water pumping system is communicated with the fire extinguishing agent dissolving tank and is used for conveying water in the bucket into the fire extinguishing agent dissolving tank; the fire extinguishing agent dissolving box is used for containing and dissolving solid fire extinguishing agent raw materials to form liquid fire extinguishing agent; and the second water pumping system is communicated with the fire extinguishing agent dissolving tank and is used for conveying the liquid fire extinguishing agent in the fire extinguishing agent dissolving tank into the bucket. The scheme provided by the invention can avoid corrosion of the helicopter caused by leakage of the fire extinguishing agent; through setting up first pump water system and second pump water system, need not to carry the liquid fire extinguishing agent of mixture and go up the helicopter, only need carry the very light solid fire extinguishing agent raw and other materials of quality, directly mix the back on the helicopter, the well-bucket is gone into in the backward flow, has practiced thrift a large amount of loads and space resources, has improved helicopter fire extinguishing system's efficiency.
Description
Technical Field
The invention relates to the technical field of power grid forest fire prevention and control, in particular to a bidirectional self-supply type fire extinguishing system for a helicopter.
Background
The adoption of the helicopter for fire extinguishment is an important fire extinguishment mode for forest fires, the helicopter has high flying speed, the air flight is not limited by road traffic conditions, and the fire extinguishment can be carried out more timely. The helicopter is usually required to carry water and fire extinguishing agents for fire extinguishing so as to improve the fire extinguishing efficiency and prevent the reignition of the mountain fire, and the large-area mountain fire can be effectively extinguished.
However, helicopter addition of fire extinguishing agents is limited by the following conditions: (1) when the helicopter is hovered, the power is maximum, the generated strong wind easily causes the light objects on the ground to fly and roll up, and the broken stones are lifted, and the station personnel below the large helicopter is strictly prohibited to operate and add water; (2) the bucket has strict requirement on the depth of a water taking point for water taking (3) the requirement is that the water taking point is close to a fire scene, and the flight clearance condition is better.
The existing scheme adopts a built-in fire extinguishing agent automatic adding device of a helicopter, namely, a dissolved liquid fire extinguishing agent is directly carried by the helicopter and then is conveyed to a bucket to be mixed with water for fire extinguishing. However, there are the following problems:
(1) the fire extinguishing agent has conductivity and certain corrosivity, and can cause short circuit or corrosion of a helicopter control circuit connector when the fire extinguishing agent drops into a helicopter cabin, so that the safety risk is high. It must be ensured that the whole addition process is completely leak-free;
(2) helicopter load resources and space resources are precious, and the fire extinguishing agent is added in a manner of dissolving in water, so that the weight is heavy. Due to the weight and space constraints, the amount of fire suppressant that can be carried into the helicopter nacelle is quite limited. The helicopter bucket consumes the extinguishing agent after extinguishing for 1-2 times, needs to be stopped on the ground to add the extinguishing agent, consumes long time and cannot continuously and quickly extinguish fire.
Helicopter fire extinguishing technical personnel have adopted schemes such as interim excavation, assembled water tank, all have great not enough:
(1) digging a pit on the ground to take water. The fire scene is uncertain in position, can only be used as a measure after a mountain fire occurs, needs temporary site selection, excavator scheduling and the like, and is long in time; the ground is required to be repaired after excavation, so that the helicopter has better take-off conditions and anti-leakage measures and poor practicability;
(2) the assembled fire extinguishing water agent mixing device directly takes mixed fire extinguishing water agent from a bucket in the assembled device, but has limited size, is difficult to apply to large buckets, has large assembling workload and long time, and can cause fire extinguishing delay.
(3) Because the bucket requires a large water depth and a large size for taking water, the capacity of the temporary device of the two schemes is more than 50 tons, but when the bucket takes water to the lowest water taking depth, a large amount of residual fire extinguishing water agents cannot be directly taken from high altitude by the bucket for extinguishing fire, the utilization rate of the fire extinguishing agent is low, and the problems of waste and recovery of the fire extinguishing agent are caused.
In conclusion, the existing mode of temporarily adding the fire extinguishing agent has the problems of poor practicability, poor universality of buckets with different sizes and low utilization rate of the fire extinguishing agent, and the development of the built-in fire extinguishing agent adding device of the helicopter are urgently needed.
Disclosure of Invention
The present invention is directed to a bidirectional self-supplying fire suppression system for helicopters that solves at least one of the problems of the prior art.
To achieve the above object, the present invention provides a bidirectional self-supplying fire extinguishing system for a helicopter, comprising: the fire extinguishing system comprises a bucket hung on a helicopter, a first water pumping system, a fire extinguishing agent dissolving tank and a second water pumping system;
the first water pumping system is communicated with the fire extinguishing agent dissolving tank and is used for conveying water in the bucket into the fire extinguishing agent dissolving tank;
the fire extinguishing agent dissolving tank is used for containing and dissolving solid fire extinguishing agent raw materials to form liquid fire extinguishing agent;
and the two-pump water system is communicated with the fire extinguishing agent dissolving box and is used for conveying the liquid fire extinguishing agent in the fire extinguishing agent dissolving box into the bucket.
Optionally, the first water pumping system comprises a liquid return pipeline and a first water pump, the first water pump is arranged in the bucket and communicated with the liquid return pipeline, and the liquid return pipeline leads to the fire extinguishing agent dissolving tank.
Optionally, the fire extinguishing agent dissolving tank comprises a tank body, a water inlet and a water outlet arranged on the tank body, and a stirring device arranged in the tank body;
the liquid return pipeline is communicated with the water inlet.
Optionally, the secondary water pumping system comprises a pump body connecting pipeline, a second water pump and a liquid discharging pipeline;
one end of the pump body connecting pipeline is communicated with the water outlet, the other end of the pump body connecting pipeline is communicated with the water inlet of the second water pump, one end of the liquid discharging pipeline is communicated with the water outlet of the second water pump, and the other end of the liquid discharging pipeline is communicated with the interior of the bucket.
Optionally, a flow meter is arranged on the lower liquid pipeline.
Optionally, the bidirectional self-supplying fire extinguishing system for the helicopter further comprises an integrated box body, and the fire extinguishing agent dissolving box and the second water pump are both arranged in the integrated box body.
Optionally, a separation frame for fixing the fire extinguishing agent dissolving tank and the second water pump is arranged in the integrated tank.
Optionally, the first pumping system further comprises a float conduit and a float valve;
one end of the floater pipeline is communicated with the bottom of the box body, and the other end of the floater pipeline is communicated with the liquid return pipeline to form a three-way structure; the float valve can move up and down under the buoyancy action of the liquid level in the float pipeline and block the liquid return pipeline when moving to the three-way structure.
Optionally, the liquid return pipeline and the pump body connecting pipeline are both rubber pipelines; the liquid discharge pipeline is a wear-resistant high-temperature-resistant high-pressure-resistant flexible pipeline.
Optionally, the second water pump is a diaphragm pump.
The scheme provided by the invention is proved to be capable of avoiding the corrosion of the helicopter caused by the leakage of the fire extinguishing agent through trial production; through setting up two-way self-watering agent, need not to carry the liquid fire extinguishing agent of mixture and go up the helicopter, only need carry the very light solid fire extinguishing agent raw and other materials of quality, directly mix the back on the helicopter, the well-bucket is gone into in the backward flow, has practiced thrift a large amount of loads and space resource, has improved helicopter fire extinguishing system's efficiency. The device has the characteristics of good field application effect, simple structure, safety, reliability and convenience in operation and use.
Drawings
FIG. 1 is a schematic illustration of a bidirectional self-contained helicopter-carrying helicopter fire suppression system in accordance with an embodiment of the present invention;
fig. 2 is a schematic connection diagram of relevant components within an integrated box of the bi-directional self-supplied fire suppression system of the helicopter of fig. 1.
Reference numerals:
10-a bucket;
20-a first water pumping system; 21-a liquid return pipeline; 22-a first water pump; 23-first pumping system power line; 24-a buoyant conduit; 25-a float valve;
30-fire extinguishing agent dissolving tank; 31-a box body; 32-water inlet; 33-water outlet; 34-a stirring device;
40-a second water pumping system; 41-the pump body is connected with a pipeline; 42-a second water pump; 43-a liquid discharge pipe; 44-a flow meter;
50-an integrated box body; 51-separation frame.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
Referring to fig. 1-2, the present embodiment provides a helicopter bidirectional self-supplied fire suppression system comprising: a bucket 10, a first water pumping system 20, a fire extinguishing agent dissolving tank 30 and a second water pumping system 40 which are hung on a helicopter; the first water pumping system 20 is communicated with the fire extinguishing agent dissolving tank 30, and is used for conveying the water in the bucket 10 into the fire extinguishing agent dissolving tank 30; the fire extinguishing agent dissolving tank 30 is used for containing and dissolving solid fire extinguishing agent raw materials to form liquid fire extinguishing agent; the two-pump water system 40 is communicated with the fire extinguishing agent dissolving tank 30, and is used for conveying the liquid fire extinguishing agent in the fire extinguishing agent dissolving tank 30 into the bucket 10.
When putting out a fire, the well-bucket 10 hangs on the helicopter, and fire extinguishing agent dissolves case 30 and puts in the helicopter cabin, and after filling water in the well-bucket 10, first pumping system 20 carries some water to the fire extinguishing agent dissolves the case 30 in, and fire extinguishing agent dissolves case 30 and places solid-state fire extinguishing agent raw and other materials (powdered) that add in advance, after dissolving in water, forms liquid fire extinguishing agent, and then second pumping system 40 carries liquid fire extinguishing agent to the well-bucket 10 in to mix evenly in well-bucket 10, the helicopter flies to the position of catching fire, emptys the water in the well-bucket 10 at the scene of a fire, puts out the fire.
In the scheme, the fire extinguishing agent dissolving tank 30 does not need to contain liquid fire extinguishing agent in advance, so that a large amount of load and space resources of the helicopter are saved, and the fire extinguishing efficiency of the helicopter is improved; and after the liquid fire extinguishing agent is formed in the fire extinguishing agent dissolving tank 30, the liquid fire extinguishing agent does not contact other facilities in the engine room, so that the condition that the helicopter is corroded due to the leakage of the fire extinguishing agent is avoided.
In a specific embodiment, the first water pumping system 20 includes a liquid return pipe 21 and a first water pump 22, the first water pump 22 is disposed in the bucket 10 and is communicated with the liquid return pipe 21, and the liquid return pipe 21 leads to the fire extinguishing agent dissolving tank 30. The first water pump 22 is used for pumping the water in the bucket 10 to the fire extinguishing agent dissolving tank 30, and the first water pump 22 can also be arranged in the helicopter cabin according to actual conditions so as to supply power. It should be noted that, the first water pump 22 herein does not need to transport all the water in the bucket 10 to the fire extinguishing agent dissolving tank 30, and the transported water amount can satisfy the requirement of dissolving the solid fire extinguishing agent raw material, and certainly, in order to fully dissolve and promote the uniformity of mixing the fire extinguishing agent in the bucket 10, more water can be properly transported to the fire extinguishing agent dissolving tank 30, so as to flush the fire extinguishing agent dissolving tank 30 clean and avoid corrosion.
The first water pump 22 may be powered from the cabin of the helicopter by a power line 23 of the first water pumping system, or may be powered by a power source stored in the bucket 10. Since the power supply of the first water pump 22 does not belong to the main improvement point of the present application, it will not be described in detail.
In a specific embodiment, the fire extinguishing agent dissolving tank 30 comprises a tank body 31, a water inlet 32 and a water outlet 33 provided on the tank body 31, and a stirring device 34 provided in the tank body 31; the liquid return pipe 21 communicates with the water inlet 32. The stirring device 34 is used to promote dissolution and improve work efficiency. The tank 31 is provided with a special closing door (not shown in the drawings) for filling the raw material of the fire extinguishing agent in a solid state into the tank 31, and then the closing door is closed to ensure sealing.
In a specific embodiment, the two-pump water system 40 includes a pump body connecting pipe 41, a second water pump 42 and a lower liquid pipe 43; one end of the pump body connecting pipe 41 is communicated with the water outlet 33, the other end is communicated with the water inlet of the second water pump 42, one end of the lower liquid pipe 43 is communicated with the water outlet of the second water pump 42, and the other end is communicated with the interior of the bucket 10. Wherein, the second water pump 42 selects a high-pressure diaphragm pump, so that the liquid fire extinguishing agent flowing into the bucket 10 from the lower liquid pipeline 43 has a certain flow velocity, thereby accelerating the mixing with water and ensuring the uniform mixing.
Preferably, a flow meter 44 is disposed on the lower liquid pipe 43, and the flow meter 44 is used for detecting the conveying flow rate. A liquid level meter is further arranged in the box body 31 so as to know the surplus of the liquid fire extinguishing agent in the box body 31. The control of each functional component of the bidirectional self-supply type fire extinguishing system for the helicopter provided by the embodiment can be directly controlled by a person, and a special control unit can also be arranged to facilitate the control of the person.
In a preferred embodiment, the first water pumping system 20 further comprises a float pipeline 24 and a float valve 25, one end of the float pipeline 24 is communicated with the bottom of the tank 31, and the other end is communicated with the liquid return pipeline 21, and a three-way structure is formed; the float valve 25 can move up and down by the buoyancy of the liquid surface in the float pipe 24, and blocks the liquid return pipe 21 when moving to the three-way structure. When the liquid level in the box 31 is low, the position of the float valve 25 is also low, and the float valve 25 blocks the three-way structure along with the rise of the liquid level, so that the liquid return pipeline 21 cannot continuously convey water into the box 31, and the first water pump 22 is automatically closed along with the rise of the pressure in the liquid return pipeline 21, and stops working. The arrangement of the structure can avoid the situation that the fire extinguishing agent overflows and leaks in the box body 31 or the pressure is too high to cause structural damage in the box body 31 due to the fact that the liquid supplementing is too much.
In a specific embodiment, the helicopter bidirectional self-supplied fire suppression system further comprises an integrated tank 50, and the fire suppressant dissolution tank 30 and the second water pump 42 are both disposed within the integrated tank 50. The integrated case 50 functions to integrate various components into one case, to be portable, and to further prevent leakage of the fire extinguishing agent. Further, a partition frame 51 for fixing the fire extinguishing agent dissolving tank 30 and the second water pump 42 is provided in the integrated tank 50. The partition frame 51 is determined according to the sizes of the fire extinguishing agent dissolving tank 30 and the second water pump 42 and the sizes of other related components, and functions to fix the respective components within the integration tank 50.
In a specific embodiment, the liquid return pipe 21 and the pump body connecting pipe 41 are both rubber pipes; the lower liquid pipe 43 is a flexible pipe with wear resistance, high temperature resistance and high pressure resistance.
Trial production trials prove that the scheme can avoid corrosion of the helicopter caused by leakage of the fire extinguishing agent; through setting up two-way self water supply agent, need not to carry the liquid fire extinguishing agent of mixture and go up the helicopter, only need carry the very light solid fire extinguishing agent raw and other materials of quality, directly mix the back on the helicopter, the backward flow goes into well-bucket 10, has practiced thrift a large amount of loads and space resource, has improved helicopter fire extinguishing system's efficiency. The device has the characteristics of good field application effect, simple structure, safety, reliability and convenience in operation and use.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A bi-directional self-supplied fire suppression system for a helicopter, comprising: a bucket (10) hung on a helicopter, a first water pumping system (20), a fire extinguishing agent dissolving tank (30) and a second water pumping system (40);
the first water pumping system (20) is communicated with the fire extinguishing agent dissolving tank (30) and is used for conveying water in the bucket (10) into the fire extinguishing agent dissolving tank (30);
the fire extinguishing agent dissolving tank (30) is used for containing and dissolving solid fire extinguishing agent raw materials to form liquid fire extinguishing agent;
the two-pump water system (40) is communicated with the fire extinguishing agent dissolving tank (30) and is used for conveying the liquid fire extinguishing agent in the fire extinguishing agent dissolving tank (30) to the bucket (10).
2. A bi-directional self-supplied fire extinguishing system for helicopters according to claim 1, characterized in that said first water pumping system (20) comprises a return conduit (21) and a first water pump (22), said first water pump (22) being arranged inside said bucket (10) and communicating with said return conduit (21), said return conduit (21) opening into said fire extinguishing agent dissolving tank (30).
3. A bi-directional self-supplied fire extinguishing system for helicopters according to claim 2, characterized in that said fire extinguishing agent dissolving tank (30) comprises a tank body (31), a water inlet (32) and a water outlet (33) provided on said tank body (31), an agitation device (34) provided inside said tank body (31);
the liquid return pipeline (21) is communicated with the water inlet (32).
4. A bi-directional self-supplied fire extinguishing system for helicopters according to claim 3, characterized in that said two-pump water system (40) comprises a pump body connection pipe (41), a second water pump (42) and a lower liquid pipe (43);
one end of the pump body connecting pipeline (41) is communicated with the water outlet (33), the other end of the pump body connecting pipeline is communicated with the water inlet of the second water pump (42), one end of the lower liquid pipeline (43) is communicated with the water outlet of the second water pump (42), and the other end of the lower liquid pipeline is communicated with the interior of the bucket (10).
5. A bi-directional self-supplied fire suppression system for helicopters according to claim 4, characterized in that a flow meter (44) is provided on the downcomer (43).
6. A bidirectional self-supplied fire extinguishing system according to claim 4, further comprising an integrated tank (50), wherein the fire extinguishing agent dissolving tank (30) and the second water pump (42) are both disposed within the integrated tank (50).
7. A bi-directional self-supplied fire extinguishing system for helicopters according to claim 6, characterized in that inside said integrated tank (50) there is a separation frame (51) for fixing said fire extinguishing agent dissolving tank (30) and said second water pump (42).
8. A helicopter bi-directional self-supplied fire suppression system according to claim 3, characterized in that said first water pumping system (20) further comprises a float conduit (24) and a float valve (25),
one end of the floater pipeline (24) is communicated with the bottom of the box body (31), and the other end of the floater pipeline is communicated with the liquid return pipeline (21) to form a three-way structure; the float valve (25) can move up and down under the buoyancy action of the liquid level in the float pipeline (24) and block the liquid return pipeline (21) when moving to the three-way structure.
9. A bi-directional self-supplied fire extinguishing system for helicopters according to claim 3, characterized in that said return duct (21) and said pump body connection duct (41) are both rubber ducts; the lower liquid pipeline (43) is a wear-resistant high-temperature-resistant high-pressure-resistant flexible pipeline.
10. A bi-directional self-supplied fire suppression system for helicopters according to claim 4, characterized in that said second water pump (42) is a diaphragm pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010191235.9A CN111388907B (en) | 2020-03-18 | 2020-03-18 | Bidirectional self-supply type fire extinguishing system of helicopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010191235.9A CN111388907B (en) | 2020-03-18 | 2020-03-18 | Bidirectional self-supply type fire extinguishing system of helicopter |
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| CN111388907A true CN111388907A (en) | 2020-07-10 |
| CN111388907B CN111388907B (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010191235.9A Active CN111388907B (en) | 2020-03-18 | 2020-03-18 | Bidirectional self-supply type fire extinguishing system of helicopter |
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| CN (1) | CN111388907B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112473043A (en) * | 2020-11-30 | 2021-03-12 | 中国民用航空总局第二研究所 | Fire extinguishing agent filling system for aviation forest fire control and using method |
| CN112691319A (en) * | 2021-02-02 | 2021-04-23 | 湖南防灾科技有限公司 | Fire extinguishing device for helicopter |
| CN114470570A (en) * | 2022-03-01 | 2022-05-13 | 哲弗智能系统（上海）有限公司 | Fire extinguishing system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112473043A (en) * | 2020-11-30 | 2021-03-12 | 中国民用航空总局第二研究所 | Fire extinguishing agent filling system for aviation forest fire control and using method |
| CN112473043B (en) * | 2020-11-30 | 2022-05-03 | 中国民用航空总局第二研究所 | Fire extinguishing agent filling system for aviation forest fire control and using method |
| CN112691319A (en) * | 2021-02-02 | 2021-04-23 | 湖南防灾科技有限公司 | Fire extinguishing device for helicopter |
| CN114470570A (en) * | 2022-03-01 | 2022-05-13 | 哲弗智能系统（上海）有限公司 | Fire extinguishing system |
| CN114470570B (en) * | 2022-03-01 | 2024-05-31 | 哲弗智能系统（上海）有限公司 | Fire extinguishing system |
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| Publication number | Publication date |
|---|---|
| CN111388907B (en) | 2021-08-24 |
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Effective date of registration: 20231208 Address after: 410131 building 4, 55 East Longhua Road, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: Hunan Disaster Prevention Technology Co.,Ltd. Patentee after: XIANG-ELECTRIC EXPERIMENT AND RESEARCH TECHNOLOGY COMPANY OF HUNAN PROVINCE Address before: 410013 2nd floor, rear building, software center building, 662 Lugu Avenue, high tech Development Zone, Changsha City, Hunan Province Patentee before: XIANG-ELECTRIC EXPERIMENT AND RESEARCH TECHNOLOGY COMPANY OF HUNAN PROVINCE |