CN113842578A

CN113842578A - Opposed jet fire suppression device

Info

Publication number: CN113842578A
Application number: CN202111257572.4A
Authority: CN
Inventors: 张成相; 张旭超; 姜乃文; 李飞; 蔡笃成
Original assignee: Zephyr Intelligent System Shanghai Co Ltd
Current assignee: Zephyr Intelligent System Shanghai Co Ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2021-12-28

Abstract

The invention discloses an opposite injection type fire suppression device which comprises a cylinder body, a gas generator, a first piston and a second piston. The middle part of the cylinder body is provided with a holding bin, the two sides of the holding bin are respectively provided with a first cavity and a second cavity, and the two ends of the cylinder body are respectively provided with a first outlet and a second outlet. When thermal runaway occurs, the first outlet and the second outlet are opened, and the gas generator is started. The gas generated by the gas generator can be rapidly diffused to the first cavity and the second cavity from the containing bin, and the first piston and the second piston are pushed to respectively slide towards the first outlet and the second outlet. The inhibitor in the first cavity and the inhibitor in the second cavity are ejected out of the first outlet and the second outlet due to the extrusion of the first piston and the second piston. Moreover, under the pushing of the gas, the sliding speed of the first piston and the second piston is more stable, so that the spraying speed of the inhibitor is also more stable. Further, since the inhibitor can be ejected from both ends of the cylinder at the same time, the flow rate of the inhibitor is also increased.

Description

Opposed jet fire suppression device

Technical Field

The invention relates to the technical field of fire-fighting equipment, in particular to an opposite injection type 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 extinguishing device is generally arranged in a battery compartment of the new energy vehicle. The fire extinguishing apparatus generally includes a bottle group and an inhibitor loaded in the bottle group, and the bottle group 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. However, the inhibitor is not stably ejected under pressure and the flow rate is small.

Disclosure of Invention

In view of the above, it is desirable to provide a fire suppression device of the opposed jet type in which the inhibitor is stably sprayed and the flow rate is large.

An opposed-jet fire suppression device comprising:

the cylinder body is of a hollow cylindrical structure, an accommodating bin is formed in the middle of the cylinder body, a first cavity and a second cavity communicated with the accommodating bin are formed on two sides of the accommodating bin respectively, and a first outlet and a second outlet communicated with the first cavity and the second cavity are formed in two ends of the cylinder body respectively;

the gas generator is accommodated in the accommodating bin and can generate gas when being started; and

the first piston and the second piston are contained in the first cavity and the second cavity respectively, and can slide along the axial direction of the cylinder body under the action of pressure.

In one embodiment, two opposite partition plates are arranged in the middle of the cylinder body, the two partition plates and the inner wall of the cylinder body are enclosed to form the accommodating bin, and air holes are formed in the two partition plates so that the accommodating bin is respectively communicated with the first cavity and the second cavity.

In one embodiment, the air holes on the two partition plates are arranged coaxially with the cylinder body.

In one embodiment, the gas generator is an aerosol generator.

In one embodiment, the side wall of the cylinder body is provided with a mounting hole communicated with the accommodating bin, and the gas generator can enter and exit the accommodating bin through the mounting hole.

In one embodiment, the inner wall of the mounting hole is provided with an internal thread, the side wall of the gas generator is provided with an external thread, and the external thread is screwed with the internal thread so as to fix the gas generator to the accommodating bin.

In one embodiment, a first supplementary port and a second supplementary port which are communicated with the first cavity and the second cavity are respectively arranged at two ends of the cylinder body.

In one embodiment, the cylinder is circular in cross-section.

In the opposed jet fire suppression device, the space on the side of the first piston and the second piston facing away from the accommodation chamber can accommodate the suppressant. When thermal runaway occurs, the first outlet and the second outlet are opened, and the gas generator is started. The gas generated by the gas generator can be rapidly diffused to the first cavity and the second cavity from the containing bin, and the first piston and the second piston are pushed to respectively slide towards the first outlet and the second outlet. The inhibitor is ejected from the first outlet and the second outlet by the pressing of the first piston and the second piston. Under the push of gas, the sliding speed of the first piston and the second piston is more stable, so that the spraying speed of the inhibitor is more stable. Further, since the inhibitor can be ejected from both ends of the cylinder at the same time, the flow rate of the inhibitor is also increased.

Drawings

FIG. 1 is a schematic view of an opposed jet fire suppression apparatus according to a preferred embodiment of the present invention;

fig. 2 is an axial sectional view of the opposed-jet fire suppression device 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 invention 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 invention.

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 specifically limited 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," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first 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 and 2, an opposed-jet fire suppression apparatus 100 according to a preferred embodiment of the present invention includes a cylinder 110, a gas generator 120, a first piston 130, and a second piston 140.

The cylinder block 110 is generally formed of a metal material and has high mechanical strength. The cylinder body 110 has a hollow cylindrical structure, and may have a cylindrical shape, a square shape, or the like. In the present embodiment, the cylinder 110 has a circular cross-section. Thus, the inner wall of the cylinder 110 is smoother, which is beneficial to the smooth sliding of the first piston 130 and the second piston 140 in the cylinder 110.

An accommodating bin 103 is formed in the middle of the cylinder body 110, and a first cavity 101 and a second cavity 102 communicated with the accommodating bin 103 are formed on two sides of the accommodating bin 103 respectively. The first cavity 101 and the second cavity 102 can contain an inhibitor, such as perfluorohexanone, heptafluoropropane, etc. In this embodiment, two opposite partition plates 113 are disposed in the middle of the cylinder body 110, the two partition plates 113 and the inner wall of the cylinder body 110 enclose a containing chamber 103, and air holes (not shown) are disposed on both the two partition plates 113, so that the containing chamber 103 is respectively communicated with the first cavity 101 and the second cavity 102.

The two partition plates 113 may be integrally formed with the cylinder block 110, or may be formed separately and then joined together. For the convenience of molding, the cylinder body 110 in this embodiment adopts a three-segment splicing structure, and the first cavity 101, the second cavity 102 and the accommodating bin 103 are respectively formed in different three-segment structures.

Further, a first outlet 111 and a second outlet 112, which are communicated with the first cavity 101 and the second cavity 102, are respectively disposed at both ends of the cylinder body 110. The first outlet 111 and the second outlet 112 may be provided with a nozzle, a valve, and the like, which can be opened and closed. The inhibitors contained in the first chamber 101 and the second chamber 102 can be ejected from the first outlet 111 and the second outlet 112, respectively.

The gas generator 120 is housed in the housing chamber 103. Also, the gas generator 120 can generate gas when activated. The gas generator 120 may be electrically activated, and the gas generated after activation may enter the first cavity 101 and the second cavity 102, so as to increase the pressure in the first cavity 101 and the second cavity 102. The gas generated by the gas generator 120 may be nitrogen, hydrogen, or the like. In the present embodiment, the gas generator 120 is an aerosol generator. The aerosol generator is cheap and produces a large amount of gas in a short time.

Specifically, in the present embodiment, the air holes of the two partition plates 113 are arranged coaxially with the cylinder block 110. In this way, the gas generated by the gas generator 120 can enter the first cavity 101 and the second cavity 102 more uniformly.

The first piston 130 and the second piston 140 may have the same structure, and only the installation positions are different. The first piston 130 and the second piston 140 are respectively accommodated in the first cavity 101 and the second cavity 102, and the first piston 130 and the second piston 140 can slide along the axial direction of the cylinder 110 under the action of pressure. Specifically, the inhibitor is accommodated in a space on a side of the first piston 130 and the second piston 140 facing away from the accommodating chamber 103, that is, on a left side of the first piston 130 and on a right side of the second piston 140.

When thermal runaway occurs, the first outlet 111 and the second outlet 112 are opened first; then, the gas generator 120 is activated, and the generated gas can be rapidly diffused from the accommodating chamber 103 to the first cavity 101 and the second cavity 102. As the air pressure on one side increases, the first piston 130 and the second piston 140 slide toward the first outlet 111 and the second outlet 112, respectively. At this time, the inhibitor is ejected from the first outlet 111 and the second outlet 112 by the pressing of the first piston 130 and the second piston 140, respectively.

In addition, the surfaces of the first piston 130 and the second piston 140 can share the pressure of the gas, so that the sliding speed of the first piston 130 and the second piston 140 is more stable under the pushing of the gas, and the inhibitor can be sprayed at a more stable speed and flow rate. Further, since the inhibitor can be simultaneously discharged from both ends of the cylinder 110, the flow rate of the inhibitor is also increased.

In this embodiment, a mounting hole (not shown) is formed in a side wall of the cylinder 110 and communicates with the accommodating chamber 103, and the gas generator 120 can enter and exit the accommodating chamber 103 through the mounting hole. Through the mounting hole, can overhaul and dismouting gas generator 120 to can in time replace when gas generator 120 breaks down, avoid whole device to become invalid.

Further, in the present embodiment, an inner wall of the mounting hole is provided with an internal thread, and a side wall of the gas generator 120 is provided with an external thread, and the external thread is screwed with the internal thread to fix the gas generator 120 to the accommodating chamber 103. Thus, when the gas generator 120 is disassembled and assembled, the gas generator 120 only needs to be rotated in different directions, and the operation is convenient. Moreover, the gas generator 120 can cover and seal the mounting hole, and the structure is simplified.

Specifically, in the present embodiment, a first supplementary port 114 and a second supplementary port 115 which are communicated with the first cavity 101 and the second cavity 102 are further respectively disposed at two ends of the cylinder body 110. The first supplementary port 114 and the second supplementary port 115 are closed in the normal use process, and the first supplementary port 114 and the second supplementary port 115 can supplement the inhibitor into the first cavity 101 and the second cavity 102 respectively. When the above-described opposite-jet fire suppression apparatus 100 completes the fire suppression, the gas generator 120 is disabled and the suppressant is exhausted.

At this time, a new gas generator 120 may be replaced while the first chamber 101 and the second chamber 102 are replenished with the inhibitor. Thus, the above-described opposite-jet fire suppression device 100 can be repeatedly used for many times, thereby saving resources and reducing costs.

In the above-described opposed-jet fire suppression device 100, the space on the side of the first piston 130 and the second piston 140 facing away from the housing chamber 103 can house the suppressant. When thermal runaway occurs, the first outlet 111 and the second outlet 112 are opened, and the gas generator 120 is started. The gas generated by the gas generator 120 can rapidly diffuse from the accommodating chamber 103 to the first cavity 101 and the second cavity 102, and push the first piston 130 and the second piston 140 to slide toward the first outlet 111 and the second outlet 112, respectively. The inhibitor is ejected from the first outlet 111 and the second outlet 112 by the pressing of the first piston 130 and the second piston 140. Under the push of the gas, the sliding speed of the first piston 130 and the second piston 140 is more stable, so the spraying speed of the inhibitor is also more stable. Further, since the inhibitor can be simultaneously discharged from both ends of the cylinder 110, the flow rate of the inhibitor is also increased.

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 invention. 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. An opposed-jet fire suppression device, comprising:

2. An opposed injection type fire suppression apparatus as recited in claim 1, wherein two partition plates are provided at a central portion of said cylinder body, said two partition plates and an inner wall of said cylinder body are enclosed to form said receiving chamber, and said two partition plates are provided with air holes so that said receiving chamber is communicated with said first chamber and said second chamber, respectively.

3. An opposed injection fire suppression apparatus as recited in claim 2, wherein said air holes in both of said partitions are disposed coaxially with said cylinder.

4. An opposed ejection fire suppression apparatus as recited in claim 1, wherein the gas generator is an aerosol generator.

5. An opposed injection type fire suppression apparatus as recited in claim 1, wherein a mounting hole communicating with said housing chamber is formed in a side wall of said cylinder body, and said gas generator can enter and exit said housing chamber through said mounting hole.

6. An opposed injection type fire suppression apparatus as set forth in claim 5, wherein an inner wall of said mounting hole is provided with an internal thread, and a side wall of said gas generator is provided with an external thread, said external thread being screwed with said internal thread to fix said gas generator to said housing chamber.

7. An opposed injection type fire suppression apparatus as defined in claim 1, wherein both ends of said cylinder body are further provided with a first supplementary port and a second supplementary port communicating with said first cavity and said second cavity, respectively.

8. An opposed injection fire suppression apparatus as recited in claim 1, wherein the cylinder is circular in cross-section.