A mining explosion-proof direct exhaust pressure relief device

Abstract

The present invention discloses a mine-use explosion-proof straight-through exhaust and pressure relief device, which relates to the technical field of explosion-proof pressure relief devices. The mine-use explosion-proof straight-through exhaust and pressure relief device in the present invention has a main structure including an explosion-proof pressure relief shell and an explosion-proof pressure relief inner core; an exhaust cavity is axially arranged inside the explosion-proof pressure relief shell, one end of the exhaust cavity is open, and a pressure relief hole is arranged at the other end of the explosion-proof pressure relief shell, and the pressure relief hole is connected to the exhaust cavity; the explosion-proof pressure relief inner core is arranged in the exhaust cavity; at least one straight-through pressure relief channel is axially arranged inside the explosion-proof pressure relief inner core. The explosion-proof pressure relief inner core includes two fixing seats and at least one exhaust pipe, and a straight-through channel is formed between the outer wall of the exhaust pipe and the inner wall of the exhaust cavity and between adjacent air pipes. The total cross-sectional area of ​​the straight-through channel can be changed by changing the number of exhaust pipes to meet actual use needs, and meet explosion-proof design requirements while achieving exhaust pressure relief.

Description

Technical Field

[0001] The present invention relates to the technical field of explosion-proof pressure relief devices, in particular to an explosion-proof direct-through exhaust pressure relief device for mining. Background Art

[0002] Many lithium-ion batteries are placed in the explosion-proof cavity of the explosion-proof lithium-ion battery power supply for coal mines. Since lithium batteries will produce a large amount of gas under abnormal conditions, if these gases cannot be quickly and effectively discharged from the explosion-proof cavity, the internal pressure of the explosion-proof cavity will increase and even an explosion accident will occur. Therefore, an explosion-proof pressure relief device is usually required on the explosion-proof cavity.

[0003] There are two types of existing explosion-proof pressure relief devices. One type uses a principle similar to that of a safety valve, and exhausts and relieves pressure when the pressure reaches a preset value. The pressure relief flow of this type of explosion-proof pressure relief device is small and it is difficult to meet the explosion-proof pressure relief requirements; the other type uses a diaphragm structure, which fractures the diaphragm structure when the pressure is large enough, and relieves pressure through the damaged diaphragm. This type of explosion-proof pressure relief device requires the replacement of the diaphragm, and the exhaust port is too large after the diaphragm is damaged. At this time, the explosion-proof pressure relief device does not meet the explosion-proof design requirements and is prone to explosion.

[0004] Therefore, there is an urgent need for an exhaust pressure relief device that can not only meet the explosion-proof pressure relief requirements, but also meet the explosion-proof design requirements during the exhaust pressure relief process. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a mining explosion-proof direct exhaust and pressure relief device, which can not only meet the explosion-proof pressure relief requirements, but also meet the explosion-proof design requirements during the exhaust and pressure relief process.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides an explosion-proof straight-through exhaust and pressure relief device for mining, comprising an explosion-proof pressure relief shell and an explosion-proof pressure relief inner core; an exhaust cavity is axially arranged inside the explosion-proof pressure relief shell, one end of the exhaust cavity is open, and a pressure relief hole is arranged at the other end of the explosion-proof pressure relief shell, and the pressure relief hole is connected to the exhaust cavity; the explosion-proof pressure relief inner core is arranged in the exhaust cavity; at least one straight-through pressure relief channel is axially arranged inside the explosion-proof pressure relief inner core.

[0008] Optionally, the explosion-proof pressure relief inner core includes two fixing seats and at least one exhaust pipe; one end of the fixing seat is a plane, and the other end of the fixing seat is provided with at least one limiting portion, and a plurality of through exhaust holes are provided on the fixing seat along the circumference; the end of the exhaust pipe is limitedly connected to the limiting portion; a straight-through channel is formed between the outer wall of the exhaust pipe and the inner wall of the exhaust cavity and between adjacent exhaust pipes, and the straight-through channel is connected to the exhaust hole and the pressure relief hole.

[0009] Optionally, the limiting portion includes a plurality of limiting blocks protruding along the circumferential direction, and the exhaust hole is located between adjacent limiting blocks.

[0010] Optionally, the width of the through channel is 0.05-0.8 mm.

[0011] Optionally, the exhaust pipe located at the innermost side is a solid structure, and limiting columns matching the limiting portion are provided at both ends thereof.

[0012] Optionally, an external thread is provided on the outer wall of one end of the explosion-proof pressure relief housing, and the external thread is used to connect with the battery power supply explosion-proof cavity.

[0013] Compared with the prior art, the present invention has achieved the following technical effects:

[0014] The explosion-proof straight-through exhaust and pressure relief device for mining in the present invention has a main structure including an explosion-proof pressure relief shell and an explosion-proof pressure relief inner core. The explosion-proof pressure relief inner core includes two fixing seats and at least one exhaust pipe. A straight-through channel is formed between the outer wall of the exhaust pipe and the inner wall of the exhaust cavity and between adjacent air pipes. The total cross-sectional area of ​​the straight-through channel can be changed by changing the number of exhaust pipes to meet actual use needs, thereby achieving exhaust pressure relief and meeting explosion-proof design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic structural diagram of the explosion-proof direct exhaust and pressure relief device for mining according to the present invention;

[0017] Figure 2 A schematic diagram of the mining explosion-proof direct exhaust and pressure relief device of the present invention from another perspective;

[0018] Figure 3 This is a schematic diagram of the cross-sectional exploded structure of the explosion-proof direct exhaust and pressure relief device for mining according to the present invention;

[0019] Figure 4 Schematic diagram of the cross-sectional structure of the explosion-proof and pressure-relief inner core of the explosion-proof and pressure-relief device for mining according to the present invention;

[0020] Figure 5 This is a schematic structural diagram of a fixing seat in a mining explosion-proof direct exhaust and pressure relief device according to the present invention;

[0021] Figure 6 This is a structural schematic diagram of another perspective of the fixing seat in the mining explosion-proof direct exhaust and pressure relief device of the present invention.

[0022] Explanation of the accompanying symbols: 1. explosion-proof pressure relief housing; 2. fixing seat; 3. exhaust pipe. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] This embodiment provides a mining explosion-proof direct exhaust pressure relief device, such as Figures 1 to 6 As shown, it includes an explosion-proof pressure relief shell 1 and an explosion-proof pressure relief inner core; an exhaust cavity is axially arranged inside the explosion-proof pressure relief shell 1, one end of the exhaust cavity is open, and a pressure relief hole is arranged at the other end of the explosion-proof pressure relief shell 1, and the pressure relief hole is connected to the exhaust cavity; the explosion-proof pressure relief inner core is arranged in the exhaust cavity; at least one straight pressure relief channel is axially arranged inside the explosion-proof pressure relief inner core.

[0025] In this specific embodiment, the explosion-proof pressure relief core comprises two fixed seats 2 and four exhaust pipes 3. The innermost exhaust pipe 3 is a solid cylinder with a cylindrical stopper at each end. One end of the fixed seat 2 is flat, and the other end is provided with four stoppers. The fixed seat 2 is circumferentially arranged with three circles of exhaust holes, each circle containing five exhaust holes. In a more specific embodiment, the width of the exhaust holes is the sum of the wall thickness of the exhaust pipe 3 and the width of the straight-through channel.

[0026] The inner wall of the exhaust pipe 3 contacts the outer wall of the limiting part, and the end face of the exhaust pipe 3 contacts the end face of the other end of the fixing seat 2; a straight channel is formed between the outer wall of the exhaust pipe 3 and the inner wall of the exhaust cavity and between adjacent exhaust pipes 3, and the straight channel is connected to the exhaust hole and the pressure relief hole.

[0027] The limiting portion includes five limiting blocks protruding along the circumferential direction, and the exhaust hole is located between adjacent limiting blocks.

[0028] The width of the through channel is 0.05-0.8 mm. In this embodiment, the width of the through channel is 0.55 mm.

[0029] An external thread is provided on the outer wall of one end of the explosion-proof pressure relief housing 1, and the external thread is used to connect with the explosion-proof cavity of the battery power supply.

[0030] The end of the innermost exhaust pipe 3 is connected to the fixing seat 2 by threads, interference fit, riveting or welding to ensure that each exhaust pipe 3 is relatively fixed to the fixing seat 2, thereby ensuring the width of the straight-through channel and avoiding the misalignment of the exhaust pipe 3 affecting the width of the straight-through channel and thus affecting the explosion-proof effect.

[0031] The high-pressure gas in the explosion-proof cavity enters from the open end of the exhaust cavity, enters the straight-through channel through the exhaust hole, flows to the inner bottom of the exhaust cavity, and is discharged through the pressure relief hole at the other end of the explosion-proof pressure relief shell 1.

[0032] More specifically, a rolled edge lock buckle is provided at one end of the explosion-proof pressure relief shell 1. After the explosion-proof pressure relief inner core is placed inside the exhaust cavity, the opening of the exhaust cavity is reduced in diameter by the rolled edge lock buckle to prevent the explosion-proof pressure relief inner core from falling.

[0033] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description. It is intended that all changes within the meaning and range of equivalents of the claims be included in the present invention, and any reference signs in the claims should not be construed as limiting the claims to which they relate.

[0034] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A mining explosion-proof straight-through exhaust and pressure relief device, characterized in that: The explosion-proof pressure relief device comprises an explosion-proof pressure relief shell and an explosion-proof pressure relief inner core; an exhaust cavity is axially arranged inside the explosion-proof pressure relief shell, one end of the exhaust cavity is open, and a pressure relief hole is arranged at the other end of the explosion-proof pressure relief shell, and the pressure relief hole is connected to the exhaust cavity; the explosion-proof pressure relief inner core is arranged in the exhaust cavity; at least one straight pressure relief channel is axially arranged inside the explosion-proof pressure relief inner core; The explosion-proof pressure relief inner core includes two fixing seats and at least one exhaust pipe; one end of the fixing seat is flat, and the other end of the fixing seat is provided with at least one limiting portion, and the fixing seat is circumferentially provided with a plurality of through exhaust holes; the ends of the exhaust pipes are positionally connected to the limiting portions; straight-through channels are formed between the outer walls of the exhaust pipes and the inner wall of the exhaust cavity and between adjacent exhaust pipes, and the straight-through channels are connected to the exhaust holes and the pressure relief holes; The width of the straight channel is 0.05-0.8 mm.

2. The explosion-proof direct exhaust and pressure relief device for mining according to claim 1, characterized in that: The limiting portion includes a plurality of limiting blocks protruding along the circumferential direction, and the exhaust hole is located between adjacent limiting blocks.

3. The explosion-proof direct exhaust and pressure relief device for mining according to claim 1, characterized in that: The exhaust pipe located at the innermost side is a solid structure, and limiting columns matching the limiting parts are provided at both ends of the exhaust pipe.

4. The explosion-proof direct exhaust and pressure relief device for mining according to claim 1, characterized in that: An external thread is provided on the outer wall of one end of the explosion-proof pressure relief housing, and the external thread is used to be connected to the explosion-proof cavity of the battery power supply.

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