CN216877652U

CN216877652U - Fire suppression device

Info

Publication number: CN216877652U
Application number: CN202123271020.7U
Authority: CN
Inventors: 张成相; 蔡笃成; 李飞; 冀宪胜
Original assignee: Zephyr Intelligent System Shanghai Co Ltd
Current assignee: Zephyr Intelligent System Shanghai Co Ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-07-05
Anticipated expiration: 2031-12-23

Abstract

The utility model discloses a fire suppression device, which comprises a suppressant bottle, an injection mechanism and a constant pressure mechanism. The constant pressure mechanism comprises a gas cylinder, a piston assembly, a driving assembly and a pressure reducing assembly. During fire suppression, the driving assembly is started and drives the piston head to reciprocate in the pressurizing cavity. In the process, gas continuously enters the rodless cavity from the rod cavity and then enters the high-pressure cavity from the rodless cavity, so that the gas pressure in the high-pressure cavity is increased. Furthermore, after the gas in the high-pressure cavity is decompressed to a preset pressure through the decompression assembly, the gas can be input into the inhibitor bottle, so that the gas pressure in the inhibitor bottle is increased, the inhibitor can be sprayed out from the nozzle under the action of the pressure, and fire suppression is realized. In addition, in the operation process of the driving assembly, gas can continuously enter the high-pressure cavity, so that high pressure is always maintained in the high-pressure cavity, and the gas pressure in the inhibitor bottle can be maintained stably. Therefore, the inhibitor can be stably and continuously ejected from the inhibitor bottle.

Description

Fire suppression device

Technical Field

The utility model relates to the technical field of fire-fighting equipment, in particular to a fire suppression device.

Background

With the popularization of new energy vehicles, the fire phenomenon caused by thermal runaway of the power battery in the running and charging processes is also endless. Therefore, a fire suppression device is generally disposed in a battery compartment of a new energy vehicle. The fire suppression device generally includes a bottle set and a suppressant loaded in the bottle set, and the bottle set is pre-pressurized. When thermal runaway occurs, the outlet of the bottle group is opened, and the inhibitor in the bottle group is sprayed out under the action of pressure, so that the fire is inhibited.

When the inhibitor is injected at the beginning, the pressure inside the cylinder group is high, so that the injection pressure is high and the injection flow rate is large. However, over time, the pressure inside the cylinder pack will gradually decrease, resulting in a gradual decrease in the spray flow. Therefore, the ejection of the inhibitor is unstable and the persistence is poor.

SUMMERY OF THE UTILITY MODEL

The purpose of the present invention is to provide a fire suppression device that can stably and continuously inject a suppressant.

A fire suppression device comprising:

an inhibitor bottle for containing an inhibitor;

a spray mechanism comprising a nozzle in communication with the suppressant bottle; and

the constant pressure mechanism comprises a gas cylinder, a piston assembly, a driving assembly and a pressure reducing assembly, wherein the inside of the gas cylinder is divided into a pressurizing cavity and a high-pressure cavity, a piston head of the piston assembly is slidably arranged in the pressurizing cavity and can reciprocate under the driving of the driving assembly, a first one-way valve is arranged on the piston head, and the high-pressure cavity is communicated with the rodless cavity through a second one-way valve;

wherein the first one-way valve allows gas to enter the rodless chamber from the rod chamber, the second one-way valve allows gas to enter the high pressure chamber from the rodless chamber, and the high pressure chamber is in communication with the inhibitor bottle through the pressure relief assembly.

In one embodiment, the bottle mouth of the inhibitor bottle is provided with a siphon pipe, the siphon pipe extends towards the bottom of the inhibitor bottle, and the nozzle is communicated with the siphon pipe.

In one embodiment, the spray mechanism further comprises a throttle valve disposed between the nozzle and the suppressant bottle.

In one embodiment, a plurality of first one-way valves are arranged on the piston head, and the plurality of first one-way valves are distributed along the circumferential direction of the piston head.

In one embodiment, the driving assembly comprises a motor and a transmission structure, and a piston rod of the piston assembly is in transmission connection with the motor through the transmission structure and can drive the piston head to reciprocate under the driving of the motor.

In one embodiment, the transmission structure comprises an eccentric wheel and a return spring, a top plate is arranged at one end, far away from the piston head, of the piston rod, the piston rod is slidably mounted on a mounting plate fixed on the inner wall of the gas cylinder, the eccentric wheel is mounted on a rotating shaft of the motor, the return spring is sleeved on the piston rod, two ends of the return spring respectively abut against the mounting plate and the top plate so as to abut against the top plate against the side surface of the eccentric wheel, and the piston rod is driven to stretch and retract through the eccentric wheel when the motor rotates.

In one embodiment, the driving assembly is accommodated in the rod cavity, and an air inlet hole communicated with the rod cavity is formed in the side wall of the air bottle.

In one embodiment, the pressure relief assembly comprises a plurality of pressure relief valves connected in series.

When the fire suppression device is used for suppressing fire, the driving component is started and drives the piston head to reciprocate in the pressurizing cavity. In the process, gas continuously enters the rodless cavity from the rod cavity and then enters the high-pressure cavity from the rodless cavity, so that the gas pressure in the high-pressure cavity is increased. Furthermore, after the gas in the high-pressure cavity is decompressed to a preset pressure through the decompression assembly, the gas can be input into the inhibitor bottle, so that the gas pressure in the inhibitor bottle is increased, the inhibitor can be sprayed out from the nozzle under the action of the pressure, and fire suppression is realized. In addition, in the operation process of the driving assembly, gas can continuously enter the high-pressure cavity, so that high pressure in the high-pressure cavity is always maintained, and the gas pressure in the inhibitor bottle can also be maintained stably. Therefore, the inhibitor can be stably and continuously ejected from the inhibitor bottle.

Drawings

FIG. 1 is a schematic view of a fire suppression device according to a preferred embodiment of the present invention;

fig. 2 is a schematic view of the interior of a cylinder in the fire suppression apparatus shown in fig. 1.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, a fire suppression device 10 according to a preferred embodiment of the present invention includes a suppressant bottle 100, a spraying mechanism 200, and a constant pressure mechanism 300.

The inhibitor bottle 100 is used to contain an inhibitor, which may be a common inhibitor such as heptafluoropropane, perfluorohexanone, or the like. The number of inhibitor bottles 100 in each fire suppression device 10 may be single or plural, and the inhibitor bottle 100 in this embodiment is single.

The spray mechanism 200 includes a nozzle 210 in communication with the suppressant bottle 100. When the nozzle 210 is opened, suppressant inside the suppressant bottle 100 may be ejected from the nozzle 210 under internal pressure, thereby achieving fire suppression. The number of the nozzles 210 may be one or more. Specifically in this embodiment, the spray mechanism 200 further includes a throttle valve 220 disposed between the nozzle 210 and the suppressant bottle 100. The throttle valve 220 can adjust the flow rate of the suppressant flowing through the injection mechanism 200, thereby facilitating adjustment of the amount of suppressant sprayed from the nozzle 210 according to different operating conditions.

In this embodiment, a siphon (not shown) is provided at the mouth of the inhibitor bottle 100, the siphon extends toward the bottom of the inhibitor bottle 100, and the nozzle 210 communicates with the siphon. Thus, when the air pressure in the inhibitor bottle 100 rises, the inhibitor can be led out from the bottle bottom to the bottle opening through the siphon tube under the action of pressure, so that the inhibitor at the bottom of the inhibitor bottle 100 can be fully discharged.

Referring to fig. 2, the constant pressure mechanism 300 includes a gas cylinder 310, a piston assembly 320, a driving assembly 330, a pressure reducing assembly 340, a first check valve 350 and a second check valve 360.

Cylinder 310 is a generally circular steel cylinder capable of withstanding relatively high pressures. The gas cylinder 310 is divided into a pressurizing chamber (not shown) and a high-pressure chamber 301. Specifically, a partition plate (not shown) may be welded inside the gas cylinder 310 to divide the internal space thereof into the pressurizing chamber and the high-pressure chamber 301. The piston assembly 320 includes a piston head 321 and a piston rod 322. Wherein the piston head 321 is slidably disposed within the pressurization chamber and is capable of reciprocating under the driving of the driving assembly 330. The piston head 321 divides the pressurized chamber into a rodless chamber and a rodless chamber, with the rodless chamber being adjacent to the high pressure chamber 301.

The piston head 321 is provided with a first one-way valve 350, the first one-way valve 350 allowing gas to pass from the rod chamber to the rodless chamber. The high pressure chamber 301 is communicated with the rodless chamber by a second check valve 360, and the second check valve 360 allows gas to enter the high pressure chamber 301 from the rodless chamber. Specifically, the first check valve 350 and the second check valve 360 only allow the gas to flow in the left-to-right direction shown in fig. 2, but do not allow the gas to flow in the opposite direction.

When the piston head 321 slides towards the rodless cavity, gas in the rodless cavity cannot enter the rod cavity due to the blocking effect of the first check valve 360, but enters the high-pressure cavity 301 through the second check valve 360; when the piston head 321 slides towards the rodless chamber, the gas in the high-pressure chamber 301 cannot return to the rodless chamber due to the second check valve 360, and the gas pressure in the rodless chamber decreases. At this point, gas in the rod chamber will enter the rodless chamber through the first one-way valve 350; when the piston head 321 slides towards the rodless chamber again, the gas in the rodless chamber can be pressed into the high-pressure chamber 301.

In the embodiment, the piston head 321 is provided with a plurality of first one-way valves 350, and the plurality of first one-way valves 350 are distributed along the circumferential direction of the piston head 321. The plurality of first check valves 350 can increase the air intake efficiency of the rodless chamber and reduce the resistance to the piston head 321 sliding toward the rod chamber.

During fire suppression, the drive assembly 330 actuates and moves the piston head 321 back and forth within the pressurized chamber. In this process, the gas will continuously enter the rodless chamber from the rod chamber and then enter the high-pressure chamber 301 from the rodless chamber, so that the gas pressure in the high-pressure chamber is increased. Moreover, during operation of the drive assembly 330, a higher pressure can be maintained within the high pressure chamber 301.

Further, the high pressure chamber 301 communicates with the suppressant bottle 100 through a pressure relief assembly 340. The gas in the high-pressure chamber 301 can be depressurized to a predetermined pressure by the depressurization assembly 340 and then be input into the inhibitor bottle 100. The pressure reducing assembly 340 can ensure that the gas in the high pressure chamber 301 is output at a constant pressure at the preset pressure. Specifically, in this embodiment, the pressure relief assembly 340 includes a plurality of pressure relief valves (not shown) connected in series.

As the gas in the high pressure chamber 301 enters the inhibitor bottle 100, the gas pressure in the inhibitor bottle 100 will gradually increase, and the inhibitor can be sprayed out from the nozzle 210 under the pressure, thereby realizing fire suppression. Since a high pressure can be maintained in the high-pressure chamber 301 at all times, the air pressure in the inhibitor bottle 100 can be maintained stable, so that the inhibitor can be stably and continuously ejected from the inhibitor bottle 100.

In this embodiment, the driving assembly 330 includes a motor 331 and a transmission structure 332, and the piston rod 322 of the piston assembly 320 is in transmission connection with the motor 331 through the transmission structure 332 and can drive the piston head 321 to reciprocate under the driving of the motor 331.

The motor 331 is small in size, easy to install, and the motor 331 responds quickly. The transmission structure 332 may be a cam transmission structure, a crankshaft connecting rod structure, or the like as long as it can convert the rotational motion of the motor 331 into the reciprocating motion of the piston rod 322.

Further, in the present embodiment, the transmission structure 332 includes an eccentric 3321 and a return spring 3322. The inner wall of the gas cylinder 310 is fixedly provided with a mounting plate 311, and one end of the piston rod 322 far away from the piston head 321 is provided with a top plate 3221. The piston rod 322 is slidably mounted on the mounting plate 311, the eccentric wheel 3321 is mounted on the rotating shaft of the motor 331, the return spring 3322 is sleeved on the piston rod 322, and two ends of the return spring are respectively abutted against the mounting plate 311 and the top plate 3221, so as to abut the top plate 3221 against the side surface of the eccentric wheel 3321, and the rotation of the motor 331 drives the piston rod 322 to extend and retract through the eccentric wheel 3321.

The distances from different positions on the side surface of the eccentric wheel 3321 to the rotating shaft of the motor 331 are different. Therefore, as the eccentric 3321 rotates, the side of the eccentric 3321 pushes the top plate 3221 against it to reciprocate. Moreover, fewer elements are required to realize transmission by the eccentric wheel 3321 and the motor 331, so that the structure of the driving assembly 330 can be simplified.

Specifically, in the present embodiment, the driving assembly 330 is accommodated in the rod cavity, and an air inlet (not shown) communicated with the rod cavity is formed on a sidewall of the air bottle 310. Gas cylinder 310 is capable of fully housing drive assembly 330, thereby protecting drive assembly 330.

In the fire suppression device 10, the driving assembly 330 is activated to drive the piston head 321 to reciprocate in the pressurizing chamber during fire suppression. In the process, the gas continuously enters the rodless cavity from the rod cavity and then enters the high-pressure cavity 301 from the rodless cavity, so that the gas pressure in the high-pressure cavity 301 is increased. Further, after the gas in the high-pressure chamber 301 is decompressed to a preset pressure by the decompression component, the gas can be input into the inhibitor bottle 100, so that the gas pressure in the inhibitor bottle 100 is increased, the inhibitor can be sprayed out from the nozzle 210 under the action of the pressure, and fire suppression is realized. In addition, during the operation of the driving assembly 330, the gas can continuously enter the high-pressure cavity 301, so that the high pressure in the high-pressure cavity 301 is always maintained, and the gas pressure in the inhibitor bottle 100 can also be maintained stably. Therefore, the inhibitor can be stably and continuously ejected from the inhibitor bottle 100.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A fire suppression device, comprising:

an inhibitor bottle for containing an inhibitor;

the constant-pressure mechanism comprises a gas cylinder, a piston assembly, a driving assembly and a pressure reducing assembly, wherein the inside of the gas cylinder is divided into a pressurizing cavity and a high-pressure cavity, a piston head of the piston assembly is slidably arranged in the pressurizing cavity and can reciprocate under the driving of the driving assembly, a first one-way valve is arranged on the piston head, and the high-pressure cavity is communicated with the rodless cavity through a second one-way valve;

2. A fire suppression device as recited in claim 1 wherein the mouth of the suppressor bottle is provided with a siphon tube extending toward the bottom of the suppressor bottle, the nozzle communicating with the siphon tube.

3. A fire suppression apparatus as recited in claim 1 wherein said injection mechanism further comprises a throttle valve disposed between said nozzle and said suppressant bottle.

4. A fire suppression device as recited in claim 1 wherein a plurality of said first one-way valves are disposed on said piston head and are distributed circumferentially of said piston head.

5. The fire suppression device of claim 1, wherein the drive assembly comprises a motor and a transmission structure, and the piston rod of the piston assembly is in transmission connection with the motor through the transmission structure and can drive the piston head to reciprocate under the drive of the motor.

6. The fire suppression device according to claim 5, wherein the transmission structure comprises an eccentric wheel and a return spring, a top plate is disposed at one end of the piston rod away from the piston head, the piston rod is slidably mounted on a mounting plate fixed on an inner wall of the gas cylinder, the eccentric wheel is mounted on a rotating shaft of the motor, the return spring is sleeved on the piston rod, two ends of the return spring respectively abut against the mounting plate and the top plate so as to abut against the top plate against a side surface of the eccentric wheel, and the motor rotates to drive the piston rod to extend and retract through the eccentric wheel.

7. A fire suppression device as recited in claim 1 wherein said drive assembly is received in said rod chamber and an air inlet is formed in a side wall of said air cylinder in communication with said rod chamber.

8. A fire suppression apparatus as claimed in claim 1, wherein the pressure relief assembly comprises a plurality of pressure relief valves connected in series.