Air compressor for underground coal mine

Abstract

The utility model relates to an air compressor for an underground coal mine. The air compressor comprises an air compressor body, an outer box body and a frequency converter IGBT (Insulated Gate Bipolar Translator) water-cooling heat exchanger, a water inlet and a water outlet are formed in the outer box body; the air compressor body is arranged in the outer box body; the frequency converter IGBT water-cooling heat exchanger is arranged in the outer box body, a partition plate is arranged between the frequency converter IGBT water-cooling heat exchanger and the air compressor body, the frequency converter IGBT water-cooling heat exchanger comprises an n-shaped pipe and a transverse pipe, the n-shaped pipe and the transverse pipe are fixedly connected with the partition plate, the n-shaped pipe is communicated with the water inlet and the transverse pipe, the transverse pipe is located above the n-shaped pipe, and the transverse pipe is located above the n-shaped pipe. Cooling water sequentially flows through the water inlet, the n-shaped pipe, the transverse pipe and the water outlet, a small hole is formed in the highest point of the n-shaped pipe, and the small hole is communicated with the transverse pipe through a connecting pipe. The technical problems that due to the fact that part of air in a water channel cannot be exhausted, cavitation can be caused after long-time use, and equipment is damaged are solved.

Description

Technical Field

[0001] The utility model relates to an air compressor used underground in a coal mine, and relates to the field of compressors. Background Art

[0002] The water channels of the inverter IGBT water-cooled heat exchanger used in existing air compressors are arranged in a "J" shape, which is not conducive to heat exchange of cooling water and may cause high temperature of the IGBT. At the same time, since some air in the water channel cannot be discharged, long-term use will cause cavitation and damage the equipment. Utility Model Content

[0003] The main purpose of the utility model is to provide an air compressor for underground coal mines, which solves the above technical problems.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an air compressor for underground coal mines, including an air compressor body, an outer box body, and an inverter IGBT water-cooled heat exchanger;

[0005] The outer box body is provided with a water inlet and a water outlet;

[0006] The air compressor body is arranged inside the outer box;

[0007] The inverter IGBT water-cooled heat exchanger is arranged inside the outer box body. A partition is arranged between the inverter IGBT water-cooled heat exchanger and the air compressor body. The inverter IGBT water-cooled heat exchanger includes an "J"-shaped tube and a transverse tube. The "J"-shaped tube and the transverse tube are fixedly connected to the partition. The "J"-shaped tube is connected to the water inlet. The "J"-shaped tube is connected to the transverse tube. The transverse tube is located above the "J"-shaped tube. The transverse tube is connected to the water outlet. The cooling water flows through the water inlet, the "J"-shaped tube, the transverse tube and the water outlet in sequence. A small hole is opened at the highest point of the "J"-shaped tube, and the small hole is connected to the transverse tube through a connecting pipe.

[0008] As a preferred solution, a top cover is detachably connected to the top of the outer box body, a control box door is provided on one side wall of the outer box body, one end of the control box door is hinged to the outer box body, and a middle support is fixedly connected to the other side wall of the outer box body. The motor shaft of the air compressor body passes through the side wall of the outer box body, and the motor shaft is sleeved with the middle support.

[0009] As a preferred solution, a connecting beam is provided on the top of the outer box body, one end of the connecting beam is detachably connected to the top cover, and the other end of the top cover is detachably connected to the top of the outer box body.

[0010] The beneficial effects achieved by the utility model are:

[0011] The utility model provides a small hole at the highest point of the "X"-shaped tube, the small hole is connected with the horizontal tube through a connecting tube, the air in the "X"-shaped tube can enter the horizontal tube through the small hole and the connecting tube, and then be discharged from the water outlet, which will not affect the normal flow of cooling water, so that the IGBT can be effectively cooled, greatly reducing the failure rate of the equipment and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0013] Figure 1 This is a front view of an air compressor for underground coal mines disclosed in a specific embodiment of the utility model;

[0014] Figure 2 It is a schematic diagram of an air compressor for underground coal mines disclosed in a specific embodiment of the utility model;

[0015] Figure 3 It is a left view of an air compressor for underground coal mines disclosed in a specific embodiment of the utility model;

[0016] Figure 4 yes Figure 3 Section along AA;

[0017] Figure 5 yes Figure 4 Enlarged view of part A in the middle.

[0018] Description of reference numerals:

[0019] 1. Outer box; 11. Top cover; 12. Control box door; 13. Middle support; 14. Water inlet; 15. Water outlet; 16. Connecting beam; 2. Inverter IGBT water-cooled heat exchanger; 21. I-shaped tube; 211. Small hole; 22. Horizontal tube; 23. Connecting tube; 3. Motor shaft; 4. Partition. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0021] like Figure 1-Figure 5As shown, the utility model discloses an air compressor for underground coal mines, comprising an air compressor body, an outer box 1 and an inverter IGBT water-cooled heat exchanger 2, wherein the outer box 1 is used to contain and protect the air compressor body and the inverter IGBT water-cooled heat exchanger 2. Figure 1 , Figure 2 As shown, the top of the outer box body 1 is detachably connected with four top covers 11. As a detachable connection method, please refer to Figure 4 A connecting beam 16 is welded to the top of the outer box body 1, and the connecting beam 16 is connected to one end of the top cover 11 by bolts, and the other end of the top cover 11 is connected to the frame at the top of the outer box body 1 by bolts.

[0022] Continue to refer Figure 2 A control box door 12 is provided on one side wall of the outer box 1. One end of the control box door 12 is hinged to the outer box 1. The other end of the control box door 12 is connected to the outer box 1 through a lock (not shown in the figure). In order to facilitate the connection of the outer box 1 with other components, a middle bracket 13 is fixedly connected to the other side wall of the outer box 1. The middle bracket 13 and the control box door 12 are respectively located on two adjacent side walls of the outer box 1. The motor shaft 3 of the air compressor body passes through the side wall of the outer box 1, and the middle bracket 13 is sleeved on the outside of the motor shaft 3.

[0023] The outer box 1 is also provided with a water inlet 14 and a water outlet 15, which are used to supply water to and from the inverter IGBT water-cooled heat exchanger 2, respectively. The inverter IGBT water-cooled heat exchanger 2 and the air compressor body are both arranged inside the outer box 1, and a partition 4 is provided between the inverter IGBT water-cooled heat exchanger 2 and the air compressor body. Figure 4 As shown, the inverter IGBT water-cooled heat exchanger 2 includes an I-shaped tube 21 and a transverse tube 22, both of which are welded to the partition 4, and the two ends of the I-shaped tube 21 are respectively connected to the water inlet 14 and the transverse tube 22, and the transverse tube 22 is located above the I-shaped tube 21, and the transverse tube 22 is connected to the water outlet 15. When in use, cooling water flows through the water inlet 14, the I-shaped tube 21, the transverse tube 22 and the water outlet 15 in sequence. In the actual working process, air will enter the I-shaped tube 21 together with the cooling water. The high point of the I-shaped tube 21 is prone to air accumulation and is not easy to be discharged. In order to allow the air in the I-shaped tube 21 to be discharged smoothly, a small hole 211 is provided at the highest point of the I-shaped tube 21. The small hole 211 is connected to the horizontal tube 22 through the connecting tube 23. During use, the air in the I-shaped tube 21 can enter the horizontal tube 22 through the small hole 211 and the connecting tube 23, and then be discharged from the water outlet 15. As a preferred solution, the diameter of the small hole 211 is between 0.2-5 mm, and the small hole 211 of this size will not affect the normal flow of cooling water in the I-shaped tube 21 and the horizontal tube 22.

[0024] When in use, cooling water enters the I-shaped tube 21 from the water inlet 14, then enters the transverse tube 22, and finally flows out of the transverse tube 22. The air that enters the I-shaped tube 21 along with the cooling water will enter the transverse tube 22 through the small hole 211, and then be discharged from the water outlet 15 along with the cooling water.

[0025] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. An air compressor for underground coal mines, characterized in that: It comprises an air compressor body, an outer box (1) and an inverter IGBT water-cooled heat exchanger (2); The outer box body (1) is provided with a water inlet (14) and a water outlet (15); The air compressor body is arranged inside the outer box (1); The inverter IGBT water-cooled heat exchanger (2) is arranged inside the outer box (1); a partition (4) is provided between the inverter IGBT water-cooled heat exchanger (2) and the air compressor body; the inverter IGBT water-cooled heat exchanger (2) comprises an I-shaped tube (21) and a transverse tube (22); the I-shaped tube (21) and the transverse tube (22) are fixedly connected to the partition (4); the I-shaped tube (21) is in communication with the water inlet (14); the I-shaped tube The cross tube (21) is connected to the cross tube (22), the cross tube (22) is located above the I-shaped tube (21), the cross tube (22) is connected to the water outlet (15), and cooling water flows through the water inlet (14), the I-shaped tube (21), the cross tube (22) and the water outlet (15) in sequence. A small hole (211) is opened at the highest point of the I-shaped tube (21), and the small hole (211) is connected to the cross tube (22) through a connecting tube (23).

2. The air compressor for underground coal mine according to claim 1, characterized in that: The top of the outer box (1) is detachably connected to a top cover (11); a side wall of the outer box (1) is provided with a control box door (12); one end of the control box door (12) is hinged to the outer box (1); the other side wall of the outer box (1) is fixedly connected to a middle bracket (13); the motor shaft (3) of the air compressor body passes through the side wall of the outer box (1); and the motor shaft (3) is sleeved with the middle bracket (13).

3. An air compressor for underground coal mine according to claim 2, characterized in that: A connecting beam (16) is provided on the top of the outer box body (1); one end of the connecting beam (16) is detachably connected to the top cover (11); and the other end of the top cover (11) is detachably connected to the top of the outer box body (1).

4. An air compressor for underground coal mine according to any one of claims 1 to 3, characterized in that: The diameter of the small hole (211) is 0.2-5 mm.

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