CN210644951U - Pressure storage type dry powder fire extinguishing device - Google Patents
Pressure storage type dry powder fire extinguishing device Download PDFInfo
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- CN210644951U CN210644951U CN201920658554.9U CN201920658554U CN210644951U CN 210644951 U CN210644951 U CN 210644951U CN 201920658554 U CN201920658554 U CN 201920658554U CN 210644951 U CN210644951 U CN 210644951U
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Abstract
A pressure storage type dry powder fire extinguishing device. The dry powder extinguishing agent filling device comprises a container, a dry powder extinguishing agent, pressurized gas, a piston, a spray head and a filling opening, wherein the piston is arranged in the container in a manner of moving left and right, so that the interior of the container is divided into an air chamber and a powder chamber, the pressurized gas is filled in the air chamber, and the dry powder extinguishing agent is filled in the powder chamber; the spray head and the filling port are respectively arranged at two ends of the container, wherein the spray head is positioned at one side of the powder cabin, and the filling port is positioned at one side of the gas cabin; a sealing device is arranged between the piston and the container or the sealing is good, so that the dry powder extinguishing agent can not enter the air chamber. The utility model discloses the effect: the fire extinguishing device can be made into a slender type and is horizontally installed in a space with limited height, such as the top of an automobile engine cabin, a narrow cable trough and an interlayer, so that the close-range fire extinguishing efficiency is higher; the fire extinguishing device has simple and reliable structure and low manufacturing cost.
Description
Technical Field
The utility model belongs to the technical field of fire control unit, especially relate to a store pressure formula dry powder extinguishing device.
Background
The temperature in the cabin is high when the automobile engine cabin runs, and if oil leakage and cable aging occur in the cabin, fire disasters are easily caused. The existing fire extinguishing devices for the fire are gas fire extinguishing devices, dry powder fire extinguishing devices and aerosol fire extinguishing devices. The gas fire extinguishing effect is poor because the cabin needs heat dissipation and cannot keep sealing; the temperature of the nozzle can reach about 180 ℃ when the aerosol is released, so that oil and cables can be ignited to cause secondary damage, and the aerosol is not suitable for the fire.
The existing dry powder extinguishing device is divided into a non-pressure storage type and a pressure storage type. The non-pressure storage type uses the solid gas producing agent to produce a large amount of gas instantly when burning, and sprays dry powder to extinguish fire. But the automobile interior equipment is easily damaged due to huge sound when the automobile interior equipment is erupted, and meanwhile, the automobile interior equipment causes panic and easily causes secondary injury.
The pressure-storing dry powder fire extinguisher stores pressurized gas and dry powder simultaneously inside a tank. When the device is started, the dry powder is directly pushed to be sprayed out under the action of the pressurized gas to extinguish fire. The Chinese patent application numbers 200620096131.5 and 201510227726.3 respectively disclose a pressure-storage type dry powder fire extinguishing device, but the tank bodies of the existing devices are mostly in a spherical shell shape or a long barrel shape, and the tank bodies are required to be vertically installed to ensure that most of dry powder is sprayed out before gas (otherwise, the dry powder cannot be sprayed out without pressure), so that the vertical size of the device is overlarge, and the height in an automobile engine cabin is difficult to leave a large installation space, thereby greatly limiting the fire extinguishing agent filling amount and the fire extinguishing effect of the device.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a pressure storage type dry powder fire extinguisher capable of being horizontally installed, which can be installed and used in a space with a small height.
In order to achieve the purpose, the utility model provides a store pressure formula dry powder extinguishing device includes container, dry powder extinguishing agent, pressurized gas, piston, shower nozzle and fills the mouth, the piston with can remove the mode setting in the inside of container from side to side, from this with the container inside partition into gas chamber and powder cabin, the gas chamber is filled with pressurized gas, the powder cabin is filled with dry powder extinguishing agent; the spray head and the filling port are respectively arranged at two ends of the container, wherein the spray head is positioned at one side of the powder cabin, and the filling port is positioned at one side of the gas cabin; a sealing device is arranged between the piston and the container or the sealing is good, so that the dry powder extinguishing agent can not enter the air chamber.
The sealing device is a powder blocking ring, or the gap between the piston and the inner wall of the container is smaller than the particle size of the dry powder extinguishing agent.
The powder blocking ring is an O-shaped ring, a lip-shaped dust blocking ring or a radial boss which is formed by protruding outwards on the circumference of the piston.
The piston is in a columnar shape or a U-shaped cover-shaped structure with an opening facing the direction of the filling opening, and the length-diameter ratio is within the range of 0.5-2.
The spray head is a temperature sensing closed spray head, or an open spray head is adopted to be matched with a valve to control the opening and the closing.
The piston is made of metal or plastic materials.
An energy storage device comprising a spring is arranged between the piston and the container so as to reduce the air inflation amount or improve the spraying pressure of the fire extinguishing agent.
The utility model provides a store pressure formula dry powder extinguishing device has following beneficial effect for prior art:
1. the fire extinguishing device can be made into a slender type and is horizontally installed in a space with limited height, such as the top of an automobile engine cabin, a narrow cable trough and an interlayer, so that the close-range fire extinguishing efficiency is higher;
2. the fire extinguishing device has simple and reliable structure and low manufacturing cost.
Drawings
FIG. 1 is a schematic diagram of a pressure-storage dry powder fire extinguishing device provided by the utility model;
FIG. 2 is a schematic view of an embodiment of the pressure-storing dry powder fire extinguishing apparatus provided by the present invention;
FIG. 3 is a schematic view of a second embodiment of the pressure-storing dry powder fire extinguishing apparatus provided by the present invention;
fig. 4 is a schematic view of the third embodiment of the pressure storage type dry powder fire extinguishing device provided by the utility model.
Detailed Description
The pressure storage type dry powder fire extinguishing device provided by the invention is explained in detail with reference to the attached drawings and the embodiment. Like parts bear like reference numerals.
As shown in fig. 1, the pressure storage type dry powder fire extinguishing device provided by the utility model comprises a container 6, a dry powder fire extinguishing agent 5, pressurized gas 2, a piston 4, a spray head 7 and a filling port 1; the piston 4 is arranged in the container 6 in a manner of moving left and right, so that the interior of the container 6 is divided into an air chamber and a powder chamber, the air chamber is filled with pressurized gas 2, and the powder chamber is filled with a dry powder extinguishing agent 5; the spray head 7 and the filling port 1 are respectively arranged at two ends of the container 6, wherein the spray head 7 is positioned at one side of the powder cabin, and the filling port 1 is positioned at one side of the gas cabin; a sealing device or good sealing is arranged between the piston 4 and the container 6, so that the dry powder extinguishing agent 5 can not enter the gas cabin.
Optionally, the powder blocking ring 3 is installed on the piston 4, so that the requirement for the size of a gap between the piston 4 and the inner wall of the container 6 can be greatly relaxed, and the processing difficulty of the surface of the piston 4 and the inner wall of the container 6 is reduced. Or the clearance between the piston 4 and the inner wall of the container 6 is smaller than the particle size of the dry powder extinguishing agent 5, so that the dry powder extinguishing agent 5 cannot enter the air chamber.
The powder blocking ring 3 is an O-shaped ring, a lip-shaped dust blocking ring or a radial boss which is formed by protruding outwards on the circumference of the piston 4.
The piston 4 is made of metal or plastic materials, is in a U-shaped cover-shaped structure or a column shape, the length-diameter ratio (namely the ratio of the length to the diameter) is in a range of 0.5-2, when the length is too small, the piston 4 is easy to overturn when sliding, and as a result, a large amount of the dry powder extinguishing agent 5 is remained in the container 6 when being sprayed, and when the length is too large, the length of the device is unnecessarily increased.
The filling opening 1 is usually a one-way valve.
The spray head 7 adopts a temperature sensing closed spray head, or adopts an open spray head to be matched with a valve to control the opening and the closing.
The whole assembling process of the pressure storage type dry powder extinguishing device is as follows:
firstly, a filling port 1 is installed on one end face of a container 6 by adopting welding, threaded connection and other modes, then a piston 4 is placed in the container 6, then a proper amount of dry powder extinguishing agent 5 is filled in a powder cabin through an opening on the other end face of the container 6, and then a spray head 7 is installed on the opening on the end face by adopting welding, threaded connection and other modes to seal the end. Finally, the air chamber is filled with pressurized gas 2 through the filling port 1.
Example one
As shown in fig. 2, the pressure storage type dry powder extinguishing device provided by this embodiment includes a container 6, a dry powder extinguishing agent 5, a pressurized gas 2, a piston 4A, a temperature sensing closed nozzle 7C and a charging port 1B; the piston 4A is arranged in the container 6 in a manner of moving left and right, so that the interior of the container 6 is divided into an air chamber and a powder chamber, the air chamber is filled with pressurized gas 2, and the powder chamber is filled with a dry powder extinguishing agent 5; the gas cabin is communicated with the filling port 1B, and the powder cabin is communicated with the temperature sensing closed nozzle 7C; the clearance between the piston 4A and the inner wall of the container 6 is smaller than the particle size of the dry powder extinguishing agent 5, so that the dry powder extinguishing agent 5 cannot enter the gas cabin.
Said piston 4A is made of metal or plastic material and is of a U-cap-like structure opening in the direction of the filling opening 1B to contain the pressurised gas 2, thus reducing the volume of the entire container 6.
The temperature sensing closed nozzle 7C consists of a bracket 16, a plug 12, a temperature sensing glass ball 13, a fastening screw 15 and a powder splashing disc 14; wherein the bracket 16 is a tubular structure, and the inner end is fixed on the container 6; plug 12 is disposed within the interior of carrier 16 in an axially movable manner along carrier 16; one end of the temperature sensing glass ball 13 presses the plug 12, and the other end is fixed in the support 16 through a fastening screw 15 arranged at the outer port of the support 16; the splash plate 14 is mounted outside the outer port of the bracket 16. When the environmental temperature is lower, the plug 12 is pressed on the support 16 through the fastening screw 15 and the temperature sensing glass ball 13, when the environmental temperature rises, the temperature sensing glass ball 13 is heated and broken, the plug 12 loses the support and falls, and at this time, the temperature sensing closed nozzle 7C is opened. The powder splashing tray 14 has the function of splashing and diffusing the dry powder extinguishing agent 5 sprayed at high speed, and the extinguishing area is enlarged to the maximum extent.
The filling port 1B is in a one-way valve form and consists of a base 7, a valve rod 8, a spring 9, a sealing ring 10 and an end baffle 11; wherein the base 7 is a tubular structure, and the inner end is fixed on the container 6; the middle part of the valve rod 8 is arranged in an inner port of the base 7, the outer end of the valve rod is positioned in the base 7, and the inner end of the valve rod is connected to one side surface of an end baffle 11 positioned in the air chamber; the sealing ring 10 is fixed on the side surface of the end baffle 11 which is contacted with the inner port of the base 7; the spring 9 is sleeved in the middle of the valve rod 8, and two ends of the spring are respectively connected with the end baffle 11 and the outer end of the valve rod 8. Under the normal condition, under the action of the pulling force exerted by the spring 9, the end baffle 11 presses the sealing ring 10 against the inner port of the base 7 to realize sealing. When inflation is required, the outer end of the valve stem 8 is depressed to the right (typically by the head of the inflation apparatus) to move the end stop 11 towards the piston 4A, at which point the action of the sealing ring 10 is deactivated and pressurised gas 2 is drawn from the inflation apparatus into the interior of the upper chamber of the container 6.
The working principle of the whole device is as follows:
under normal conditions, the pressure of the pressurized gas 2 at one side of the piston 4A is balanced with the pressure of the dry powder extinguishing agent 5 at the other side, and the piston 4A is in a static state. When a fire disaster occurs, the environmental temperature rises, when the action temperature threshold of the temperature sensing glass ball 13 is reached, the temperature sensing glass ball 13 is broken, the plug 12 loses support and drops, the temperature sensing closed nozzle 7C is opened, the pressure in the powder cabin is reduced to zero at the moment, the stress of the piston 4A is unbalanced, under the pushing of the pressurized gas 2, the piston 4A slides to one side of the powder cabin rapidly, and therefore the dry powder extinguishing agent 5 is extruded to be sprayed out from the temperature sensing closed nozzle 7C at a high speed, and is splashed and diffused under the action of the powder splashing disc 14, a large protection area is formed, and rapid fire extinguishment is achieved. The scheme is feasible, and the dry powder extinguishing agent 5 has good fluidity, so that the resistance is small when the piston 4A slides, the spraying speed of the dry powder extinguishing agent 5 is high, the dispersion degree is large after the dry powder extinguishing agent collides with the powder splashing disc 14, and the same fire extinguishing effect as that of the conventional suspended pressure storage dry powder extinguishing device can be achieved.
Example two
As shown in fig. 3, the pressure storage type dry powder fire extinguishing apparatus provided by this embodiment includes a container 6, a dry powder fire extinguishing agent 5, a pressurized gas 2, a filling port 1B, a piston 4B, a spring 17, an injection pipe 21, a pipe joint 20, a valve 22, and an open type nozzle 7B; the piston 4B is arranged in the container 6 in a manner of moving left and right, so that the interior of the container 6 is divided into an air chamber and a powder chamber, the air chamber is filled with pressurized gas 2, and the powder chamber is filled with a dry powder extinguishing agent 5; the gas cabin is communicated with the filling port 1B, and the powder cabin is communicated with the open type spray head 7B through a pipe joint 20 and an injection pipe 21; the valve 22 is arranged on the injection pipe 21; the spring 17 is arranged in the air chamber, and two ends of the spring are respectively connected to the inner end surface of the container 6 and the piston 4B.
The piston 4B is a columnar structure made of metal or plastic materials, the length-diameter ratio of the piston 4B is within 0.5-2, the piston 4B is prone to overturning when slipping too small, and as a result, a large amount of the dry powder extinguishing agent 5 remains in the container 6 when being sprayed and released, and the device length is unnecessarily increased when too large.
The piston 4B is provided with a lip-shaped dust blocking ring 3B, and the lip-shaped dust blocking ring 3B is in contact with and sealed with the inner wall of the container 6, so that the dry powder extinguishing agent 5 can not enter the air chamber.
The open type spray head 7B consists of a bracket and a powder splashing disk in the first embodiment. The valve 22 is a valve capable of controlling the opening and closing of a pipeline, such as a ball valve or a solenoid valve.
The working principle of the whole device is as follows:
under the normal state, the piston 4B is balanced with the pressure of the dry powder extinguishing agent 5 on the other side under the combined action of the pressure exerted by the pressurized gas 2 in the gas chamber and the elastic force exerted by the spring 17, and the piston 4B is in a static state. When a fire occurs, the valve 22 is opened manually by a person or automatically by a fire alarm system by visual observation of the person or detection of the fire by a fire detector. At the moment, the powder spraying pipeline is conducted, the pressure in the powder cabin is reduced to zero, the piston 4B is unbalanced in stress, and under the pushing of the pressure of the pressurized gas 2 and the elastic force of the spring 17, the piston 4B can rapidly slide to one side of the powder cabin, so that the dry powder extinguishing agent 5 is extruded to be sprayed out from the open type spray head 7B at a high speed and is splashed and diffused under the action of the powder splashing disc, a large protection area is formed, and rapid fire extinguishment is realized. The spring 17 can provide pressure to the piston 4B in the direction towards the dry powder extinguishing agent 5, so that the filling amount and filling pressure of the pressurized gas 2 can be reduced, and the reliability of the sliding of the piston 4B is higher.
EXAMPLE III
As shown in fig. 4, the pressure storage type dry powder fire extinguishing apparatus provided by this embodiment includes a container 6, a dry powder fire extinguishing agent 5, a pressurized gas 2, a filling port 1B, a piston 4C, a spring 17, an elbow 19, and a temperature sensing closed nozzle 7C; the piston 4C is arranged in the container 6 in a manner of moving left and right, so that the interior of the container 6 is divided into an air chamber and a powder chamber, the air chamber is filled with pressurized gas 2, and the powder chamber is filled with a dry powder extinguishing agent 5; the gas cabin is communicated with the filling port 1B, and the powder cabin is communicated with the temperature sensing closed nozzle 7C through an elbow 19; the spring 17 is arranged in the air chamber, and two ends of the spring are respectively connected to the inner end surface of the container 6 and the piston 4C.
The piston 4C is a columnar structure made of metal or plastic materials, but the length-diameter ratio of the piston is in a range of 0.5-2, otherwise the piston 4C can overturn when sliding, and as a result, a large amount of the dry powder extinguishing agent 5 remains in the container 6 when sprayed, and the length of the device is unnecessarily increased when the piston is too large.
The piston 4C is provided with 1-3O-shaped rings or a radial boss 3C which protrudes outwards on the circumference. The O-ring or radial boss 3C contacts the inner wall of the container 6 so that the dry powder fire suppressant 5 cannot enter the interior of the chamber.
The elbow 19 is used for changing the spraying direction of the dry powder extinguishing agent 5. When the device is horizontally installed, the dry powder extinguishing agent 5 can be vertically sprayed out from the temperature sensing closed type spray head 7C, and the horizontal area protected after collision and dispersion with the powder splashing disk is larger, which is consistent with the spraying direction of the existing suspension type pressure storage dry powder extinguishing device.
The working principle of the whole device is as follows:
under the normal state, the piston 4C is balanced with the pressure of the dry powder extinguishing agent 5 on the other side under the combined action of the pressure exerted by the pressurized gas 2 in the gas chamber and the elastic force exerted by the spring 17, and the piston 4C is in a static state. When a fire occurs, the environmental temperature rises, and when the action temperature threshold of the temperature sensing glass ball 13 is reached, the temperature sensing glass ball 13 is broken, the plug 12 loses support and falls, and the temperature sensing closed type nozzle 7C is opened. At the moment, the pressure in the powder cabin is reduced to zero, the piston 4C is unbalanced in stress, and under the pushing of the pressurized gas 2 and the elastic force of the spring 17, the piston 4C slides to one side of the powder cabin rapidly, so that the dry powder extinguishing agent 5 is extruded to be sprayed out from the temperature sensing closed type spray head 7C at a high speed through the elbow 19 and is splashed and diffused under the action of the powder splashing disc, a large protection area is formed, and rapid fire extinguishment is realized.
While the present invention has been described with reference to the accompanying drawings and embodiments, it is to be understood that those skilled in the art may change or modify the present invention without departing from the spirit and scope of the present invention, and all such changes and modifications are intended to be within the scope of the present invention.
Claims (7)
1. The utility model provides a store pressure formula dry powder extinguishing device, includes container (6), dry powder extinguishing agent (5), pressurized gas (2), piston (4), shower nozzle (7) and fills dress mouth (1), its characterized in that: the piston (4) is arranged in the container (6) in a manner of moving left and right, so that the interior of the container (6) is divided into an air chamber and a powder chamber, pressurized gas (2) is filled in the air chamber, and a dry powder extinguishing agent (5) is filled in the powder chamber; the spray head (7) and the filling port (1) are respectively arranged at two ends of the container (6), wherein the spray head (7) is positioned at one side of the powder cabin, and the filling port (1) is positioned at one side of the gas cabin; a sealing device or good sealing is arranged between the piston (4) and the container (6) so that the dry powder extinguishing agent (5) can not enter the air chamber.
2. The pressure-storing dry powder fire extinguishing apparatus according to claim 1, wherein: the sealing device is a powder blocking ring (3), or the gap between the piston (4) and the inner wall of the container (6) is smaller than the particle size of the dry powder extinguishing agent (5).
3. The pressure-storing dry powder fire extinguishing apparatus according to claim 2, wherein: the powder blocking ring (3) is an O-shaped ring, a lip-shaped dust blocking ring or a radial boss which is formed by protruding outwards on the circumference of the piston (4).
4. The pressure-storing dry powder fire extinguishing apparatus according to claim 1, wherein: the piston (4) is in a columnar or U-shaped cover-shaped structure with an opening facing the filling port (1), and the length-diameter ratio is within the range of 0.5-2.
5. The pressure-storing dry powder fire extinguishing apparatus according to claim 1, wherein: the spray head (7) is a temperature sensing closed spray head, or an open spray head is adopted to be matched with a valve to control the opening and the closing.
6. The pressure-storing dry powder fire extinguishing apparatus according to claim 1, wherein: the piston (4) is made of metal or plastic materials.
7. The pressure-storing dry powder fire extinguishing apparatus according to claim 1, wherein: an energy storage device comprising a spring is arranged between the piston (4) and the container (6) to reduce the air inflation amount or improve the spraying pressure of the fire extinguishing agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920658554.9U CN210644951U (en) | 2019-05-08 | 2019-05-08 | Pressure storage type dry powder fire extinguishing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920658554.9U CN210644951U (en) | 2019-05-08 | 2019-05-08 | Pressure storage type dry powder fire extinguishing device |
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| CN210644951U true CN210644951U (en) | 2020-06-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113520172A (en) * | 2021-08-06 | 2021-10-22 | 广东福尔电子有限公司 | Pressure-resistant electric cooker temperature sensor detection device |
| CN114129946A (en) * | 2021-11-24 | 2022-03-04 | 北京达氟安全科技有限公司 | Adjustable fire extinguishing device based on different fire extinguishing intensity requirements and application method thereof |
| CN114129945A (en) * | 2021-11-24 | 2022-03-04 | 北京达氟安全科技有限公司 | Fire extinguishing device convenient for repeatedly using and replacing fittings and application method thereof |
| CN117224882A (en) * | 2023-03-16 | 2023-12-15 | 广东华途仕建材实业有限公司 | Fireproof heat-insulating type suspended ceiling aluminum veneer |
-
2019
- 2019-05-08 CN CN201920658554.9U patent/CN210644951U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113520172A (en) * | 2021-08-06 | 2021-10-22 | 广东福尔电子有限公司 | Pressure-resistant electric cooker temperature sensor detection device |
| CN114129946A (en) * | 2021-11-24 | 2022-03-04 | 北京达氟安全科技有限公司 | Adjustable fire extinguishing device based on different fire extinguishing intensity requirements and application method thereof |
| CN114129945A (en) * | 2021-11-24 | 2022-03-04 | 北京达氟安全科技有限公司 | Fire extinguishing device convenient for repeatedly using and replacing fittings and application method thereof |
| CN117224882A (en) * | 2023-03-16 | 2023-12-15 | 广东华途仕建材实业有限公司 | Fireproof heat-insulating type suspended ceiling aluminum veneer |
| CN117224882B (en) * | 2023-03-16 | 2024-03-12 | 广东华途仕建材实业有限公司 | Fireproof heat-insulating type suspended ceiling aluminum veneer |
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