Explosion-proof spiral exhaust pressure reducing device for mines

Abstract

An explosion-proof spiral exhaust and decompression device for mines, comprising an explosion-proof decompression shell (1) and a first explosion-proof decompression core (2), an exhaust cavity is installed inside the explosion-proof decompression shell (1) along an axial direction, one end of the exhaust cavity is opened, and a decompression hole (6) is installed at the other end of the explosion-proof decompression shell (1), the decompression hole (6) communicates with the exhaust cavity, the first explosion-proof decompression core (2) is installed in the exhaust cavity, and at least one explosion-proof spiral decompression channel (4) is installed on the outer wall of the first explosion-proof decompression core (2), the explosion-proof spiral exhaust and decompression device for mines can further install a second explosion-proof decompression core (3) between the explosion-proof decompression shell (1) and the first explosion-proof decompression core (2), and by increasing the cross-sectional area of ​​the decompression channel while not changing the pressure-resistant explosion-proof gap and changing the level of the explosion-proof decompression core, it can meet the actual usage requirements, and realize the exhaust decompression and meet the explosion-proof design requirements at the same time.

Description

[Technical Field]

[0001] The present invention relates to the technical field of explosion-proof pressure reducing devices, and in particular to an explosion-proof spiral exhaust pressure reducing device for mines. [Background technology]

[0002] Many lithium-ion batteries are placed in the pressure-resistant explosion-proof cavity of the power supply for explosion-proof lithium-ion batteries for coal mines. When the lithium batteries are in an abnormal state, they will generate a large amount of gas. If this gas cannot be quickly and effectively discharged from the pressure-resistant explosion-proof cavity, the internal pressure of the pressure-resistant explosion-proof cavity will increase, and further explosion accidents will occur. Therefore, it is usually necessary to install an explosion-proof decompression device in the pressure-resistant explosion-proof cavity.

[0003] One type of conventional explosion-proof pressure reducing device uses a principle similar to that of a safety valve, and exhausts and reduces pressure when the pressure reaches a predetermined value. However, the pressure reducing flow rate of such explosion-proof pressure reducing devices is small, making it difficult to meet the explosion-proof pressure reducing requirements. Another type uses a membrane structure, and when the pressure is sufficiently high, the membrane structure collapses and the pressure is reduced through the damaged membrane. This type of explosion-proof pressure reducing device requires the membrane to be replaced, and after the membrane is damaged, the exhaust port is too large. This type of explosion-proof pressure reducing device does not meet the explosion-proof design requirements and is prone to explosions.

[0004] Therefore, there is an urgent need for an exhaust and decompression device that can meet the explosion-proof decompression requirements and still meet the explosion-proof design requirements during the exhaust and decompression process. Summary of the Invention [Problem to be solved by the invention]

[0005] In order to solve the above technical problems, the present invention provides an explosion-proof spiral exhaust and decompression device for mines, which can meet the explosion-proof decompression requirements and still meet the explosion-proof design requirements during the exhaust and decompression process. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides the following solutions.

[0007] The present invention provides an explosion-proof spiral exhaust and decompression device for mines, comprising an explosion-proof decompression shell and a first explosion-proof decompression core, an exhaust cavity is arranged inside the explosion-proof decompression shell along the axial direction, one end of the exhaust cavity is arranged open, and a decompression hole is arranged at the other end of the explosion-proof decompression shell, the decompression hole is connected to the exhaust cavity, the first explosion-proof decompression core is arranged in the exhaust cavity, and at least one explosion-proof spiral decompression channel is arranged on the outer wall of the first explosion-proof decompression core.

[0008] Optionally, at least one second explosion-proof decompression core is further installed between the explosion-proof decompression shell and the first explosion-proof decompression core, the second explosion-proof decompression core has a rod-shaped structure, and at least one spiral decompression channel is installed on the outer wall of the second explosion-proof decompression core, and a storage cavity is installed inside the second explosion-proof decompression core, and the storage cavity is used to store the first explosion-proof decompression core or the second explosion-proof decompression core.

[0009] Optionally, a circumferential decompression groove is provided at one end of the first explosion-proof decompression core facing the inner bottom of the exhaust cavity.

[0010] Optionally, a gap between an outer diameter of the spiral decompression channel on the outer wall of the first explosion-proof decompression core and an inner diameter of the exhaust cavity is 0.03 to 0.6 mm.

[0011] Optionally, a circumferential decompression groove is provided at one end of the second explosion-proof decompression core facing the inner bottom of the exhaust cavity, and the storage cavity communicates with the circumferential decompression groove.

[0012] Optionally, a gap between an outer diameter of the spiral decompression channel on the outer wall of the first explosion-proof decompression core and an inner diameter of the receiving cavity is 0.03 to 0.6 mm.

[0013] Optionally, in two adjacent second explosion-proof decompression cores, the gap between the outer diameter of the spiral decompression channel on the outer wall of the inner second explosion-proof decompression core and the inner diameter of the receiving cavity of the outer second explosion-proof decompression core is 0.03 to 0.6 mm.

[0014] Optionally, the decompression holes are provided at the end and side wall of the other end of the explosion-proof decompression shell.

[0015] Optionally, an outer diameter screw thread is provided on one end outer wall of the explosion-proof vacuum shell, and the outer diameter screw thread is used to connect to the power source pressure-proof explosion-proof cavity of the storage battery.

[0016] Optionally, the length of said spiral decompression channel is 25 mm or greater. [Effects of the Invention]

[0017] Compared with the prior art, the present invention achieves the following technical advantages: The explosion-proof spiral exhaust and decompression device for mines of the present invention mainly comprises an explosion-proof decompression shell and a first explosion-proof decompression core, and a second explosion-proof decompression core can be installed between the explosion-proof decompression shell and the first explosion-proof decompression core, which increases the cross-sectional area of ​​the decompression channel while not changing the pressure-resistant explosion-proof gap and changes the level of the explosion-proof decompression core, thereby meeting the actual usage requirements and realizing exhaust and decompression while meeting the explosion-proof design requirements. [Brief explanation of the drawings]

[0018] In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the drawings necessary to be used in the embodiments will be briefly described below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative efforts.

[0019] [Figure 1] 1 is a structural schematic diagram of an explosion-proof spiral exhaust and pressure reduction device for mines according to the present invention; [Figure 2]1 is a schematic diagram of the cross-sectional structure of the first explosion-proof decompression core in the explosion-proof spiral exhaust and decompression device for mines of the present invention. FIG. [Figure 3] 2 is a schematic diagram of the cross-sectional structure of the second explosion-proof decompression core in the explosion-proof spiral exhaust and decompression device for mines of the present invention. [Figure 4] 1 is a schematic diagram of the end structure of the other end of the explosion-proof decompression shell in the explosion-proof spiral exhaust and decompression device for mines of the present invention. [Figure 5] FIG. 1 is a three-dimensional structural schematic diagram of a three-level explosion-proof decompression core installed in the explosion-proof spiral exhaust and decompression device for mines of the present invention. [Figure 6] 1 is a structural schematic diagram of a three-level explosion-proof decompression core installed in the explosion-proof spiral exhaust and decompression device for mines of the present invention; [Figure 7] 1 is a schematic cross-sectional view of a three-level explosion-proof decompression core installed in the explosion-proof spiral exhaust and decompression device for mines of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, any other embodiments obtained by those skilled in the art without any creative efforts are all within the protection scope of the present invention.

[0021] Example 1: This embodiment provides an explosion-proof spiral exhaust and decompression device for mines, which, as shown in Figures 2 and 4, includes an explosion-proof decompression shell 1 and a first explosion-proof decompression core 2. The explosion-proof decompression shell 1 has an axial exhaust cavity inside, one end of which is open, and a decompression hole 6 at the other end of the explosion-proof decompression shell 1, which communicates with the exhaust cavity. The first explosion-proof decompression core 2 is installed within the exhaust cavity, and two explosion-proof spiral decompression channels 4 are installed on the outer wall of the first explosion-proof decompression core 2. One end of the first explosion-proof decompression core 2, facing the inner bottom of the exhaust cavity, is equipped with a circumferential decompression groove 5. An outer diameter thread is installed on the outer wall of one end of the explosion-proof decompression shell 1, which is used to connect to the pressure-resistant explosion-proof cavity for the storage battery power supply.

[0022] In this specific embodiment, the other end and side wall of the explosion-proof decompression shell 1 are all provided with decompression holes 6, and the gap between the outer diameter of the explosion-proof spiral decompression channel 4 on the outer wall of the first explosion-proof decompression core 2 and the inner diameter of the exhaust cavity is 0.03 mm. In this embodiment, the gap between the outer diameter of the explosion-proof spiral decompression channel 4 on the outer wall of the first explosion-proof decompression core 2 and the inner diameter of the exhaust cavity is mainly used for installing the first explosion-proof decompression core 2 inside the explosion-proof decompression shell 1. The pitch of the two explosion-proof spiral decompression channels 4 on the outer wall of the first explosion-proof decompression core 2 is 10 mm, and the cross section of the explosion-proof spiral decompression channel 4 is 0.8 mm. 2 and the length of the explosion-proof spiral decompression channel 4 is 25 mm or more.

[0023] The high-pressure gas in the pressure-resistant explosion-proof cavity enters from the open end of the exhaust cavity, flows through the explosion-proof spiral decompression channel 4 to the inner bottom of the exhaust cavity, and is discharged from the end of the other end of the explosion-proof decompression shell 1 and the decompression hole 6 on the side wall.

[0024] Example 2: This embodiment is an improved embodiment based on the first embodiment. As shown in FIGS. 1 to 4, in this embodiment, a second explosion-proof decompression core 3 is further installed between the explosion-proof decompression shell 1 and the first explosion-proof decompression core 2. The second explosion-proof decompression core 3 has a rod-shaped structure. Two explosion-proof spiral decompression channels 4 are installed on the outer wall of the first explosion-proof decompression core 3. A storage cavity is installed inside the second explosion-proof decompression core 3, and the storage cavity is used to store the first explosion-proof decompression core 2.

[0025] In this specific embodiment, a circumferential decompression groove 8 is installed at one end of the second explosion-proof decompression core 3 facing the inner bottom of the exhaust cavity, and the storage cavity is connected to the circumferential decompression groove 8. The gap between the outer diameter of the explosion-proof spiral decompression channel 4 on the outer wall of the first explosion-proof decompression core 2 and the inner diameter of the storage cavity is 0.18 mm.

[0026] The high-pressure gas in the pressure-resistant explosion-proof cavity enters from the open end of the exhaust cavity, flows through the explosion-proof spiral decompression channel 4 on the outer wall of the first explosion-proof decompression core 2 and the second explosion-proof decompression core 3 and the gap between the explosion-proof spiral decompression channel 4 and the inner wall, and flows to the inner bottom of the exhaust cavity, and is discharged from the end of the other end of the explosion-proof decompression shell 1 and the decompression hole 6 on the side wall.

[0027] Example 3: This embodiment is an improved embodiment based on the second embodiment. As shown in FIGS. 5 to 7, in this embodiment, two second explosion-proof decompression cores 3 are installed between the explosion-proof decompression shell 1 and the first explosion-proof decompression core 2, namely, a first-level second explosion-proof decompression core 31 and a second-level second explosion-proof decompression core 32 are installed, and the gap between the outer diameter of the explosion-proof spiral decompression channel 4 on the outer wall of the first-level second explosion-proof decompression core 31 and the inner diameter of the receiving cavity of the second-level second explosion-proof decompression core 32 is 0.6 mm.

[0028] More specifically, a roll-off lock 7 is installed at one end of the explosion-proof decompression shell 1. After the explosion-proof decompression core is placed inside the exhaust cavity, the opening of the exhaust cavity is reduced through the roll-off lock 7 to prevent the explosion-proof decompression core from falling.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and it is necessary to explain that the present invention can be realized in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, regardless of where one looks at it, the embodiments are all illustrative and non-limiting, and the scope of the present invention is limited not by the above description but by the appended claims. Therefore, any changes within the meaning and scope of the equivalents in the claims are intended to be included within the present invention, and any reference signs in the claims should not be considered as limitations on the relevant claims.

[0030] In this specification, specific examples are used to explain the principles and embodiments of the present invention, and the above description of the examples is only used to help understand the method and core idea of ​​the present invention, and at the same time, for those skilled in the art, according to the idea of ​​the present invention, there are all changes in the form for implementing the invention and the scope of application. Therefore, the contents of this specification should not be understood as limitations on the present invention. [Explanation of symbols]

[0031] 1. Explosion-proof decompression shell 2. The first explosion-proof decompression core 3. Second explosion-proof decompression core 4. Explosion-proof spiral decompression channel 5. Circumferential pressure reduction groove 6. Decompression hole 7. Roll-off lock 31. Level 1 Second Explosion-Proof Decompression Core 32. Second level second explosion-proof decompression core

Claims

1. An explosion-proof spiral exhaust and decompression device for mines, comprising an explosion-proof decompression shell and a first explosion-proof decompression core, an exhaust cavity is installed inside the explosion-proof decompression shell along an axial direction, one end of the exhaust cavity is opened, and a decompression hole is installed at the other end of the explosion-proof decompression shell, the decompression hole is connected to the exhaust cavity, the first explosion-proof decompression core is installed in the exhaust cavity, and at least one explosion-proof spiral decompression channel is installed on the outer wall of the first explosion-proof decompression core, At least one second explosion-proof decompression core is further installed between the explosion-proof decompression shell and the first explosion-proof decompression core, the second explosion-proof decompression core has a rod-shaped structure, and at least one spiral decompression channel is installed on the outer wall of the second explosion-proof decompression core, and a storage cavity is installed inside the second explosion-proof decompression core, and the storage cavity is used to store the first explosion-proof decompression core or the second explosion-proof decompression core; The explosion-proof spiral exhaust and decompression device for mines is characterized in that the decompression holes are installed at both the end and side wall of the other end of the explosion-proof decompression shell.

2. The explosion-proof spiral exhaust and decompression device for mines according to claim 1, characterized in that a circumferential decompression groove is provided at one end of the first explosion-proof decompression core facing the inner bottom of the exhaust cavity.

3. The explosion-proof spiral exhaust and decompression device for mines described in claim 1, characterized in that the gap between the outer diameter of the spiral decompression channel on the outer wall of the first explosion-proof decompression core and the inner diameter of the exhaust cavity is 0.03 to 0.6 mm.

4. The explosion-proof spiral exhaust and decompression device for mines described in claim 1, characterized in that a circumferential decompression groove is installed at one end of the second explosion-proof decompression core facing the inner bottom of the exhaust cavity, and the storage cavity is connected to the circumferential decompression groove.

5. The explosion-proof spiral exhaust and decompression device for mines described in claim 1, characterized in that the gap between the outer diameter of the spiral decompression channel on the outer wall of the first explosion-proof decompression core and the inner diameter of the storage cavity is 0.03 to 0.6 mm.

6. The explosion-proof spiral exhaust and decompression device for mines described in claim 1, characterized in that in two adjacent second explosion-proof decompression cores, the gap between the outer diameter of the spiral decompression channel on the outer wall of the inner second explosion-proof decompression core and the inner diameter of the storage cavity of the outer second explosion-proof decompression core is 0.03 to 0.6 mm.

7. The explosion-proof spiral exhaust and pressure reduction device for mines according to claim 1, characterized in that an outer diameter thread is installed on the outer wall of one end of the explosion-proof pressure reduction shell, and the outer diameter thread is used to connect to the power supply pressure-resistant explosion-proof cavity of the storage battery.

8. The explosion-proof spiral exhaust and decompression device for mines according to claim 1, wherein the length of the spiral decompression channel is 25 mm or more.

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