CN210131281U - High-pressure water mist fire extinguishing system applied to urban underground comprehensive pipe gallery - Google Patents
High-pressure water mist fire extinguishing system applied to urban underground comprehensive pipe gallery Download PDFInfo
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- CN210131281U CN210131281U CN201920870842.0U CN201920870842U CN210131281U CN 210131281 U CN210131281 U CN 210131281U CN 201920870842 U CN201920870842 U CN 201920870842U CN 210131281 U CN210131281 U CN 210131281U
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Abstract
The utility model discloses a high-pressure water mist fire extinguishing system applied to an urban underground comprehensive pipe gallery, which comprises a plurality of water mist automatic fire extinguishing devices which are uniformly distributed in the pipe gallery and are connected in series through a fire-fighting water supply pipeline, and a compressed air source assembly which is connected with all the water mist automatic fire extinguishing devices through an air supply pipeline; the automatic water mist fire extinguishing device comprises a filter valve connected with a fire-fighting water supply pipeline, a gas-water control valve connected with the filter valve and a gas supply pipeline, a double gas-water mixer connected with the gas-water control valve, a water mist spray head assembly connected with the double gas-water mixer, and an induction device which is arranged in the gas-water control valve and used for inducting and opening the gas-water control valve to enable gas and water to enter the double gas-water mixer to be mixed to form high-pressure water mist and finally sprayed through the water mist spray head assembly when a fire occurs. The utility model discloses usable normal fire control water supply is put out a fire, and the water smoke that its produced is thin and even, the coverage is wide simultaneously, has splendid fire extinguishing effect.
Description
Technical Field
The utility model relates to a city utility tunnel conflagration safety technical field, specifically speaking relates to a be applied to city utility tunnel's thin water smoke fire extinguishing systems of high pressure.
Background
The city underground pipeline comprehensive pipe gallery is characterized in that a tunnel space is built in the city underground, various engineering pipelines such as electric power, communication, gas, heat supply, water supply and drainage and the like are integrated in the tunnel space, and a special overhaul port, a lifting port and a monitoring system are arranged; therefore, the urban underground pipeline comprehensive pipe gallery is an important infrastructure for guaranteeing urban operation, and once a fire disaster happens to the urban underground pipeline comprehensive pipe gallery, great loss is caused. Currently, fire extinguishing systems in utility tunnels can be divided into water-based extinguishing systems and dry powder extinguishing systems depending on the nature of the extinguishing agent. In the dry powder fire extinguishing system, because the superfine dry powder is sprayed once, the re-burning fire can not be extinguished, so that the fire extinguishing performance is poor. And the required water pressure of water system fire extinguishing system is higher, can not the lug connection urban fire control supply water, and simultaneously, current water smoke shower nozzle requires for quality of water higher, uses the fire control to supply water and causes the jam to the shower nozzle easily, consequently, designs a water smoke fire extinguishing system that has high fire performance and can use fire control to supply water, is the problem that relevant technical staff need solve urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be applied to city utility tunnel's thin water smoke fire extinguishing systems of high pressure solves the problem that current river system fire extinguishing systems can not use the fire control water supply as the water source.
In order to achieve the above object, the utility model adopts the following technical scheme:
a high-pressure water mist fire extinguishing system applied to an urban underground comprehensive pipe gallery comprises a plurality of water mist automatic fire extinguishing devices which are uniformly distributed in a pipe gallery and connected in series through a fire-fighting water supply pipeline, and a compressed air source assembly which is connected with all the water mist automatic fire extinguishing devices through an air supply pipeline; the automatic water mist fire extinguishing device comprises a filter valve connected with a fire-fighting water supply pipeline, a gas-water control valve connected with the filter valve and a gas supply pipeline, a double gas-water mixer connected with the gas-water control valve, a water mist spray head assembly connected with the double gas-water mixer, and an induction device which is arranged in the gas-water control valve and used for inducting and opening the gas-water control valve to enable gas and water to enter the double gas-water mixer to be mixed to form high-pressure water mist and finally sprayed through the water mist spray head assembly when a fire occurs.
Furthermore, induction system is including setting up the air water shutoff piece that is used for closing the air water control valve in the air water control valve to and be connected through connecting block and air water shutoff piece bottom, thereby the high temperature breakage makes the air water shutoff piece remove under the action of gravity and open the temperature sensing glass ball of air water control valve when being used for taking place the condition of a fire.
Further, the double-gas-water mixer comprises a primary gas-water mixing mechanism communicated with the gas-water control valve and a secondary gas-water high-pressure mixing mechanism communicated with the primary gas-water mixing mechanism through a throat cavity; and the water spray nozzle assembly and the air water control valve are simultaneously communicated with the secondary air water high-pressure mixing mechanism.
Further, the primary air-water mixing mechanism comprises a first air inlet communicated with the air-water control valve, an air-water mixing cavity communicated with the first air inlet and the throat cavity, and a water supply flow dividing assembly communicated with the air-water mixing cavity and the air-water control valve.
Further, the secondary air-water high-pressure mixing mechanism comprises a second air inlet communicated with the air-water control valve, an air-water high-pressure mixing cavity communicated with the second air inlet and the throat cavity, and a water mist outlet communicated with the air-water high-pressure mixing cavity and the water mist spray head assembly.
Further, the water supply flow distribution assembly comprises a main water pipe communicated with the air-water control valve and a plurality of flow distribution water pipes communicated with the main water pipe and the air-water mixing cavity simultaneously.
Specifically, the diameter of the diversion water pipe is 1-3 mm. And nozzles are arranged in the first air inlet and the second air inlet.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model discloses a set up compressed air source subassembly and thin water smoke automatic fire extinguishing device and solved because of the lower unable problem of using of fire control water supply water pressure. Generate out high-pressure gas through the compressed air source subassembly, then high-pressure gas mixes in thin water smoke automatic fire extinguishing device with the fire control water supply, forms high-pressure water smoke and puts out a fire, need not to use high-pressure water source, provides convenience for city utility tunnel river system fire extinguishing systems construction.
(2) The utility model discloses a setting up the filter valve at thin water smoke automatic fire extinguishing device, fire control water supply has filtered before getting into thin water smoke automatic fire extinguishing device and mixing formation water smoke, has avoided the emergence of the circumstances such as jam shower nozzle, pipeline.
(3) The utility model realizes the full mixing of fire water supply and gas by arranging the double gas-water mixer, the water supply shunting component divides the main water flow into a plurality of smaller water flows flowing into the gas-water mixing cavity, and the water flows are mixed under high gas pressure to form water mist; then the water mist is connected with the high-pressure gas again in the gas-water high-pressure mixing cavity for mixing, so that the water mist is thinner and more uniform, the spraying distance of the water mist is further after the pressurization of the secondary gas, and the fire extinguishing effect is better.
(4) The utility model discloses an induction system has realized the auto-induction to the condition of a fire and linkage and has opened the gas water control valve and supply air water. When a fire occurs, the temperature sensing glass ball is broken, the air and water blocking block moves under the action of gravity to open the air and water control valve, and air and water are supplied to the double air and water mixer to be mixed to generate water mist. Has the advantages of sensitive induction and high reaction speed.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural diagram of the automatic water mist fire extinguishing device.
Fig. 3 is a schematic cross-sectional view of a dual gas-water mixer.
Fig. 4 is a sectional view schematically showing the air water control valve.
Fig. 5 is a schematic structural diagram of the air-water control valve when the temperature-sensing glass ball is broken.
Wherein, the names corresponding to the reference numbers are:
1-fire-fighting water supply pipeline, 2-gas supply pipeline, 3-gas compression tank, 4-gas compressor, 5-fine water mist automatic fire extinguishing device, 51-filter valve, 52-gas water control valve, 53-double gas-water mixer, 54-water mist spray head component, 501-gas water control valve body, 502-chamber, 503-gas inlet pipe, 504-water inlet pipe, 505-gas outlet pipe, 506-water outlet pipe, 507-gas-water blocking block, 508-connecting block, 509-temperature sensing glass ball, 510-supporting frame, 511-connecting water pipe, 531-gas-water mixing chamber, 532-gas-water high pressure mixing chamber, 533-throat chamber, 534-water supply shunting component, 535-first gas inlet, 536-second gas inlet, 537-water mist outlet, 538-main water pipe and 539-shunt water pipe.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
Examples
As shown in fig. 1 to 5, the utility model discloses a high-pressure water mist fire extinguishing system applied to an urban underground comprehensive pipe gallery, which comprises a plurality of water mist automatic fire extinguishing devices 5 which are uniformly distributed in the pipe gallery and are connected in series through a fire-fighting water supply pipeline 1, and a compressed air source assembly which is connected with all the water mist automatic fire extinguishing devices 5 through an air supply pipeline 2; the automatic water mist fire extinguishing device 5 comprises a filter valve 51 connected with a fire-fighting water supply pipeline 1, a gas-water control valve 52 connected with the filter valve 51 and a gas supply pipeline 2, a double gas-water mixer 53 connected with the gas-water control valve 52, a water mist spray head assembly 54 connected with the double gas-water mixer 53, and an induction device arranged in the gas-water control valve 52 and used for inducing and opening the gas-water control valve to enable gas and water to enter the double gas-water mixer to be mixed to form high-pressure water mist and finally spray through the water mist spray head assembly when a fire occurs.
The gas-water control valve 52 comprises a gas-water control valve body 501, a cavity 502 arranged in the gas-water control valve body 501, an air inlet pipe 503 communicated with the air supply pipeline 2 and arranged at the top of the cavity 502, an water inlet pipe 504 arranged on the side wall of the cavity 502 and connected with the filter valve 51, an air outlet pipe 505 arranged at the top of the side wall of the cavity 502, a water outlet pipe 506 arranged on the side wall of the cavity 504 relatively, and a through hole arranged at the bottom of the gas-water control valve body and communicated with the cavity.
The sensing device comprises an air-water blocking block 507 which is arranged in the cavity and used for blocking and closing the air inlet pipe 503 and the water inlet pipe 504, and a temperature sensing glass ball 509 which is arranged outside the air-water control valve 52 and connected with the bottom of the air-water blocking block 507 through a connecting block 508. The inside connecting water pipe 511 that is equipped with of air water shutoff piece 507, the distance of air water shutoff piece 507 bottom and cavity 502 bottom with the distance of connecting water pipe 511 and inlet tube 504 is the same, gas water control valve body 501 bottom is equipped with the support frame 510 that is used for the fixed support temperature sensing glass ball 509.
The dual gas-water mixer 53 includes a primary gas-water mixing mechanism and a secondary gas-water high-pressure mixing mechanism communicated with the primary gas-water mixing mechanism through a throat cavity 533. The primary air-water mixing mechanism comprises a first air inlet 535 communicated with the air outlet pipe 505, an air-water mixing cavity 531 communicated with the first air inlet 535 and the throat cavity 533, and a water supply shunting assembly 534 communicated with the air-water mixing cavity 531 and the water outlet pipe 506. The water supply shunting assembly 534 is arranged at the top of the air-water mixing cavity 531.
The secondary air-water high-pressure mixing mechanism comprises a second air inlet 536 communicated with the air outlet pipe 505, an air-water high-pressure mixing cavity 532 communicated with the second air inlet 536 and the throat cavity 533, and a water mist outlet 537 communicated with the air-water high-pressure mixing cavity 532 and the water mist nozzle assembly 54.
The water supply branching assembly 534 includes a main water pipe 538 in communication with the water outlet pipe 506, and a plurality of branching water pipes 539 in communication with both the main water pipe 538 and the air-water mixing chamber 531. The diameter of the diversion water pipe 539 is 1-3 mm. The first inlet opening 535 and the second inlet opening 536 are each provided with a nozzle.
In practical application, the compressed gas source assembly comprises a gas compression tank 3 and a gas compressor 4 connected with the gas compression tank 3. The gas supply pipe 2 is communicated with a gas compression tank 3.
When a fire occurs in the urban underground comprehensive pipe gallery, the temperature sensing glass ball is broken, the air-water blocking block loses support and moves downwards to the bottom of the cavity under the action of gravity and air pressure, the connecting water pipe in the air-water blocking block is communicated with the water inlet pipe and the water outlet pipe, and fire-fighting water supply flows into the water supply shunting assembly from the water outlet pipe after being filtered by the filter valve for supplying water; and a cavity formed above the cavity is communicated with the air inlet pipe and the air outlet pipe, and high-pressure air in the air supply pipeline flows out of the air outlet pipe and enters the double air-water mixer through the first air inlet and the second air inlet. In the air-water mixing cavity, high-pressure gas entering from the first air inlet and water flowing out of the water supply shunting assembly shunting water pipe are mixed to form water mist, the water mist enters the air-water high-pressure mixing cavity through the throat cavity, the high-pressure gas entering from the second air inlet is mixed with the water mist again, the water mist is thinner and more uniform, the air pressure of the water mist is increased simultaneously, and finally the water mist enters the spray head cavity to be sprayed out of a fire from the water mist spray head. The average working pressure of the spray head is more than or equal to 0.4MPa, and the maximum working pressure can reach 0.6 MPa; the average response time of fire extinguishing is less than or equal to 30s, and the fastest response time can reach 22 s. Along with the continuous spraying of thin water smoke shower nozzle puts out a fire, the gaseous reduction in the gas compression jar, thereby the gas compressor who meets with the gas compression jar this moment senses the reduction of pressure in the gas compression jar and begins work, mends the gas compression jar after compressing the air in to thin water smoke automatic fire extinguishing device can put out a fire for a long time, and fire extinguishing performance is good.
The utility model discloses an above-mentioned design, solved current river system fire extinguishing systems effectively and can not use the fire control water supply as the problem at water source, use the low pressure water that normal fire control supplied water to put out a fire, have higher fire extinguishing performance simultaneously.
The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention, but all the insubstantial changes or modifications made in the spirit and the idea of the main design of the present invention, the technical problems solved by the embodiment are still consistent with the present invention, and all should be included in the protection scope of the present invention.
Claims (8)
1. A high-pressure water mist fire extinguishing system applied to an urban underground comprehensive pipe gallery comprises a plurality of water mist automatic fire extinguishing devices which are uniformly distributed in the pipe gallery and are connected in series through a fire-fighting water supply pipeline, and is characterized by also comprising a compressed air source assembly which is connected with all the water mist automatic fire extinguishing devices through an air supply pipeline (2); the automatic water mist fire extinguishing device comprises a filter valve (51) connected with a fire-fighting water supply pipeline, a water mist control valve (52) connected with the filter valve (51) and a gas supply pipeline (2), a double water and gas mixer (53) connected with the water and gas control valve (52), a water mist spray head assembly (54) connected with the double water and gas mixer (53), and an induction device which is arranged in the water and gas control valve (52) and used for inducting to open the water and gas control valve when fire occurs so that gas and water enter the double water and gas mixer to be mixed to form high-pressure water mist and finally sprayed through the water mist spray head assembly.
2. The high-pressure water mist fire extinguishing system applied to the urban underground comprehensive pipe gallery according to claim 1, wherein the sensing device comprises a water-air blocking block (507) which is arranged in the water-air control valve (52) and used for closing the water-air control valve, and a temperature-sensitive glass ball (509) which is connected with the bottom of the water-air blocking block (507) through a connecting block (508) and used for enabling the water-air blocking block to move under the action of gravity when a fire occurs and opening the water-air control valve due to high-temperature breakage.
3. The high-pressure water mist fire extinguishing system applied to the urban underground comprehensive pipe gallery according to claim 2, wherein the double gas-water mixer (53) comprises a primary gas-water mixing mechanism communicated with the gas-water control valve (52) and a secondary gas-water high-pressure mixing mechanism communicated with the primary gas-water mixing mechanism through a throat cavity (533); and the water mist spray head assembly (54) and the air water control valve (52) are simultaneously communicated with the secondary air water high-pressure mixing mechanism.
4. The high-pressure water mist fire extinguishing system applied to the urban underground comprehensive pipe gallery according to claim 3, wherein the primary air-water mixing mechanism comprises a first air inlet (535) communicated with the air-water control valve (52), an air-water mixing chamber (531) communicated with the first air inlet (535) and the throat cavity (533), and a water supply flow dividing assembly (534) communicated with the air-water mixing chamber (531) and the air-water control valve (52).
5. The high-pressure water mist fire extinguishing system applied to the urban underground comprehensive pipe gallery according to claim 4, wherein the water supply flow dividing assembly comprises a main water pipe (538) communicated with the air-water control valve (52), and a plurality of flow dividing water pipes (539) simultaneously communicated with the main water pipe (538) and the air-water mixing chamber (531).
6. The high-pressure water mist fire extinguishing system applied to the urban underground comprehensive pipe gallery according to claim 5, wherein the diameter of the water diversion pipe (539) is 1-3 mm.
7. The high-pressure water mist fire extinguishing system applied to the urban underground comprehensive pipe gallery according to any one of claims 4 to 6, wherein the secondary air-water high-pressure mixing mechanism comprises a second air inlet (536) communicated with the air-water control valve (52), an air-water high-pressure mixing chamber (532) simultaneously communicated with the second air inlet (536) and the throat cavity (533), and a water mist outlet (537) simultaneously communicated with the air-water high-pressure mixing chamber (532) and the water mist nozzle assembly (54).
8. The high-pressure water mist fire extinguishing system applied to the urban underground utility tunnel according to claim 7, wherein the first air inlet (535) and the second air inlet (536) are provided with nozzles (530) therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920870842.0U CN210131281U (en) | 2019-06-11 | 2019-06-11 | High-pressure water mist fire extinguishing system applied to urban underground comprehensive pipe gallery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920870842.0U CN210131281U (en) | 2019-06-11 | 2019-06-11 | High-pressure water mist fire extinguishing system applied to urban underground comprehensive pipe gallery |
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| CN210131281U true CN210131281U (en) | 2020-03-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111589020A (en) * | 2020-05-28 | 2020-08-28 | 航天康达(北京)科技发展有限公司 | Perfluorohexanone quick fire extinguishing device and fire extinguishing system |
| CN115337585A (en) * | 2022-08-17 | 2022-11-15 | 安徽中科安和科技有限公司 | Compressed air foam fire extinguishing system for urban comprehensive pipe gallery |
-
2019
- 2019-06-11 CN CN201920870842.0U patent/CN210131281U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111589020A (en) * | 2020-05-28 | 2020-08-28 | 航天康达(北京)科技发展有限公司 | Perfluorohexanone quick fire extinguishing device and fire extinguishing system |
| CN111589020B (en) * | 2020-05-28 | 2022-03-04 | 航天康达(北京)科技发展有限公司 | Perfluorohexanone quick fire extinguishing device and fire extinguishing system |
| CN115337585A (en) * | 2022-08-17 | 2022-11-15 | 安徽中科安和科技有限公司 | Compressed air foam fire extinguishing system for urban comprehensive pipe gallery |
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