A cooling device for fully-mechanized coal mining face

Abstract

This utility model discloses a cooling device for a fully mechanized mining face, comprising an emulsion cooling structure and a clean water cooling structure. The emulsion cooling structure includes an emulsion return tank, a first output pipe, a first electric pump, a first heat exchanger, a second output pipe, and an emulsion supply tank. The clean water cooling structure includes a clean water tank, a third output pipe, a second electric pump, a second heat exchanger, and a fourth output pipe. The advantage of this utility model is that by combining the emulsion cooling structure and the clean water cooling structure, and utilizing the combined cooling of emulsion and clean water, the heat generated by the three main components (machinery, machinery, and equipment) at the fully mechanized mining face is reduced, lowering the temperature of the personnel access passage and pipelines along the working face, thus significantly improving the cooling effect on the three main components of the fully mechanized mining face.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically to a cooling device for a fully mechanized mining face. Background Technology

[0002] As the depth of coal mining continues to increase, the mining environment of fully mechanized mining faces is becoming increasingly complex, and the problem of high temperatures is becoming more and more prominent. Under deep mining conditions, the ground temperature gradient increases, and the long-term high-speed operation of the "three machines" (coal mining machine, scraper conveyor, and hydraulic support) of the fully mechanized mining face generates a large amount of mechanical heat, causing the ambient temperature of the working face to rise continuously. In some mines, the temperature of the fully mechanized mining face has even exceeded 30°C, far exceeding the standard of no more than 26°C for underground working environment temperature stipulated in the "Coal Mine Safety Regulations".

[0003] High temperatures not only severely impact the health and work efficiency of underground workers, leading to heatstroke, fatigue, and other problems and increasing the risk of accidents, but also adversely affect the normal operation of mining equipment. Excessive temperatures accelerate the wear and aging of equipment components, reducing equipment lifespan and reliability, increasing downtime rates, and consequently affecting the continuity and output of coal mining, resulting in significant economic losses.

[0004] Currently, most mines use traditional cooling methods, such as ventilation cooling and spray cooling, which have problems such as limited cooling effect, high energy consumption, and certain negative impacts on equipment and the environment. They are difficult to meet the needs of efficient cooling for the "three machines" in deep fully mechanized mining faces. Utility Model Content

[0005] The technical problem to be solved by this utility model is how to provide a cooling device for fully mechanized mining faces that can improve the cooling effect of the "three machines" (machine, equipment, and sprayer) and spraying in deep fully mechanized mining faces.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A cooling device for a fully mechanized mining face includes an emulsion cooling structure and a clean water cooling structure; The emulsion cooling structure includes an emulsion return tank, a first output pipe, a first electric pump, a first heat exchanger, a second output pipe, and an emulsion supply tank. The input end of the emulsion return tank is connected to the hydraulic support in the fully mechanized mining face. The output end of the emulsion return tank is connected to the input end of the first heat exchanger through the first output pipe. The first electric pump is installed on the first output pipe. The output end of the first heat exchanger is connected to the input end of the emulsion supply tank through the second output pipe. The output end of the emulsion supply tank is connected to the hydraulic support in the fully mechanized mining face. The clean water cooling structure includes a clean water tank, a third output pipe, a second electric pump, a second heat exchanger, and a fourth output pipe. The clean water tank is equipped with one input end, two output ends, and one return end. The input end is connected to an external water source. One of the output ends is connected to the input end of the second heat exchanger through the third output pipe, and the other output end is connected to the coal mining machine, scraper conveyor, and spray pipe in the fully mechanized mining face. The second electric pump is installed on the third output pipe, and the return end is connected to the output end of the second heat exchanger through the fourth output pipe.

[0007] By combining the emulsion cooling structure and the water cooling structure, the combined cooling of emulsion and water reduces the heat of the three machines (coal mining machine, scraper conveyor, and hydraulic support) in the fully mechanized mining face, thereby lowering the temperature of the pedestrian passage and pipelines along the working face and greatly improving the cooling effect on the three machines (coal mining machine, scraper conveyor, and hydraulic support) in the fully mechanized mining face.

[0008] Preferably, the first output pipe between the emulsion return tank and the first electric pump consists of two sets of parallel rubber hoses, the input ends of which are connected to the emulsion return tank and the output ends of which are connected to the input end of the first electric pump.

[0009] Preferably, each set of hoses is equipped with a first filter and a first shut-off valve.

[0010] Preferably, a first flow meter, a first thermometer, a first pressure gauge, and a first gate valve are provided on the first output pipe between the first electric pump and the first heat exchanger.

[0011] Preferably, a second thermometer, a second pressure gauge, and a second gate valve are provided on the second output pipe.

[0012] Preferably, a second filter is provided at the inlet of the clean water tank.

[0013] Preferably, a second flow meter, a third thermometer, a third pressure gauge, and a third gate valve are installed on the third output pipe between the second electric pump and the second heat exchanger.

[0014] Preferably, a third filter is also provided on the third output pipe between the second electric pump and the second heat exchanger.

[0015] Preferably, a fourth thermometer, a fourth pressure gauge, and a fourth gate valve are installed on the fourth output pipe.

[0016] Preferably, both the first heat exchanger and the second heat exchanger are plate heat exchangers.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. The high-temperature emulsion in the hydraulic support column of the fully mechanized mining face is lowered and then transported to the hydraulic support column of the fully mechanized mining face, so that the column is filled with low-temperature emulsion. Through heat exchange, the local temperature of the pedestrian passage of the working face is achieved, which greatly reduces the temperature of the working passage of the workers. The water cooling structure is used as a cooling medium to cool the coal mining machine and scraper conveyor. It is also used for spray cooling operations in the spray pipe to cool the fully mechanized mining face.

[0018] 2. By combining the emulsion cooling structure and the water cooling structure, the combined cooling of emulsion and water reduces the heat of the three machines (coal mining machine, scraper conveyor, and hydraulic support) in the fully mechanized mining face, thereby lowering the temperature of the pedestrian passage and pipelines along the working face and greatly improving the cooling effect on the three machines (coal mining machine, scraper conveyor, and hydraulic support) in the fully mechanized mining face. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the emulsion cooling structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the water cooling structure according to an embodiment of the present invention. Detailed Implementation

[0020] To facilitate understanding of the technical solution of this utility model by those skilled in the art, the technical solution of this utility model will now be further described in conjunction with the accompanying drawings.

[0021] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited.

[0023] See Figure 1 and Figure 2 This embodiment discloses a cooling device for a fully mechanized mining face, including an emulsion cooling structure 1 and a clean water cooling structure 2.

[0024] See Figure 1 The emulsion cooling structure 1 includes an emulsion return tank 101, a first output pipe 102, a first electric pump 103, a first heat exchanger 104, a second output pipe 105, and an emulsion supply tank 106. The input end of the emulsion return tank 101 is connected to the hydraulic support in the fully mechanized mining face. The output end of the emulsion return tank 101 is connected to the input end of the first heat exchanger 104 through the first output pipe 102. The first electric pump 103 is installed on the first output pipe 102. The output end of the first heat exchanger 104 is connected to the input end of the emulsion supply tank 106 through the second output pipe 105. The output end of the emulsion supply tank 106 is connected to the column of the hydraulic support in the fully mechanized mining face to provide emulsion to the column frame of the hydraulic support.

[0025] The first output pipe 102 between the emulsion return tank 101 and the first electric pump 103 consists of two sets of parallel rubber hoses. The input ends of both hoses are connected to the emulsion return tank 101, and the output ends are connected to the input end of the first electric pump 103. Each set of rubber hoses is equipped with a first filter 107 and a first shut-off valve 108.

[0026] A first flow meter 109, a first thermometer 110, a first pressure gauge 111 and a first gate valve 112 are installed on the first output pipe 102 between the first electric pump 103 and the first heat exchanger 104. A second thermometer 113, a second pressure gauge 114 and a second gate valve 115 are installed on the second output pipe 105.

[0027] Furthermore, the cold source end of the first heat exchanger 104 includes a cold source input end and an output end. The cold source input end is equipped with a third flow meter 116, a fourth thermometer 117, a fourth pressure gauge 118 and a fourth gate valve 119, and the cold source output end is equipped with a fifth thermometer 120, a fifth pressure gauge 121 and a fifth gate valve 122.

[0028] Specifically, the high-temperature emulsion in the hydraulic support column of the fully mechanized mining face is returned to the emulsion return tank 101, and then pumped to the first heat exchanger 104 by the first electric pump 103 for heat exchange and cooling. The cooled emulsion flows into the emulsion supply tank 106, and then the cooled emulsion in the emulsion supply tank 106 is transported to the column of the hydraulic support of the fully mechanized mining face, so that the column is filled with low-temperature emulsion. By using heat exchange, the local temperature of the pedestrian passage of the working face is reduced, which greatly reduces the temperature of the working passage of the workers.

[0029] See Figure 2The clean water cooling structure 2 includes a clean water tank 201, a third output pipe 202, a second electric pump 203, a second heat exchanger 204, and a fourth output pipe 205. The clean water tank 201 is equipped with one input end, two output ends, and one return end. The input end is connected to an external water source. One of the output ends is connected to the input end of the second heat exchanger 204 through the third output pipe 202, and the other output end is connected to the coal mining machine, scraper conveyor, and spray pipe in the fully mechanized mining face to provide a cooling water source for the coal mining machine, scraper conveyor, and spray pipe. The second electric pump 203 is installed on the third output pipe 202, and the return end is connected to the output end of the second heat exchanger 204 through the fourth output pipe 205.

[0030] The input end of the clear water tank 201 is equipped with a second filter 206 for filtering the water entering the clear water tank 201. The third output pipe 202 between the second electric pump 203 and the second heat exchanger 204 is equipped with a second flow meter 207, a third thermometer 208, a third pressure gauge 209, a third gate valve 210, and a third filter 211. The fourth output pipe 205 is equipped with a fourth thermometer 212, a fourth pressure gauge 213, and a fourth gate valve 214.

[0031] Furthermore, the cold source end of the second heat exchanger 204 includes a cold source input end and an output end. The cold source input end is equipped with a fourth flow meter 215, a sixth thermometer 216, a sixth pressure gauge 217 and a sixth gate valve 218, and the cold source output end is equipped with a seventh thermometer 219, a seventh pressure gauge 220 and a seventh gate valve 221.

[0032] Specifically, an external water source is delivered to the clean water tank 201, and then the clean water in the clean water tank 201 is pumped to the second heat exchanger 204 for heat exchange and cooling through the second electric pump 203. The cooled clean water flows back to the clean water tank 201, and then the cooled clean water in the clean water tank 201 is delivered to the coal mining machine, scraper conveyor and spray pipe of the fully mechanized mining face, to cool down the coal mining machine and scraper conveyor, and at the same time to cool down the spray pipe for spray cooling operation, so as to cool down the fully mechanized mining face.

[0033] Furthermore, in this embodiment, the cold source for both the first heat exchanger 104 and the second heat exchanger 204 is an internal cold source in the mine, reducing the use of external cold sources and thus reducing exchange costs; both the first heat exchanger 104 and the second heat exchanger 204 are plate heat exchangers, but are not limited to plate heat exchangers, and the specific type of heat exchanger can be selected according to actual production needs.

[0034] In summary, by lowering the temperature of the high-temperature emulsion in the hydraulic support columns of the fully mechanized mining face and then supplying it to the columns, the columns are filled with low-temperature emulsion. This heat exchange achieves localized cooling of the personnel access passageway, significantly reducing the temperature of the workers' access passageway. The clean water cooling structure 2 serves as a cooling medium for the coal mining machine and scraper conveyor, and is also used for spray cooling operations in the spray pipes, further cooling the fully mechanized mining face. In this embodiment, the combined use of emulsion cooling structure 1 and clean water cooling structure 2 reduces the heat generated by the three machines (coal mining machine, scraper conveyor, and hydraulic support) at the fully mechanized mining face, lowering the temperature of the personnel access passageway and along the pipelines, and greatly improving the cooling effect on the three machines (coal mining machine, scraper conveyor, and hydraulic support) at the fully mechanized mining face.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] The above-described embodiments are merely examples of implementation methods of the utility model. The scope of protection of this utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model.

Claims

1. A cooling device for a fully mechanized mining face, characterized in that: Including emulsion cooling structure and water cooling structure; The emulsion cooling structure includes an emulsion return tank, a first output pipe, a first electric pump, a first heat exchanger, a second output pipe, and an emulsion supply tank. The input end of the emulsion return tank is connected to the hydraulic support in the fully mechanized mining face. The output end of the emulsion return tank is connected to the input end of the first heat exchanger through the first output pipe. The first electric pump is installed on the first output pipe. The output end of the first heat exchanger is connected to the input end of the emulsion supply tank through the second output pipe. The output end of the emulsion supply tank is connected to the hydraulic support in the fully mechanized mining face. The clean water cooling structure includes a clean water tank, a third output pipe, a second electric pump, a second heat exchanger, and a fourth output pipe. The clean water tank is equipped with one input end, two output ends, and one return end. The input end is connected to an external water source. One of the output ends is connected to the input end of the second heat exchanger through the third output pipe, and the other output end is connected to the coal mining machine, scraper conveyor, and spray pipe in the fully mechanized mining face. The second electric pump is installed on the third output pipe, and the return end is connected to the output end of the second heat exchanger through the fourth output pipe.

2. The cooling device for a fully mechanized mining face according to claim 1, characterized in that: The first output pipe between the emulsion return tank and the first electric pump consists of two sets of parallel rubber hoses, the input ends of which are connected to the emulsion return tank and the output ends of which are connected to the input end of the first electric pump.

3. The cooling device for a fully mechanized mining face according to claim 2, characterized in that: Each set of hoses is equipped with a first filter and a first shut-off valve.

4. A cooling device for a fully mechanized mining face according to claim 1, characterized in that: A first flow meter, a first thermometer, a first pressure gauge, and a first gate valve are installed on the first output pipe between the first electric pump and the first heat exchanger.

5. A cooling device for a fully mechanized mining face according to claim 1, characterized in that: The second output pipeline is equipped with a second thermometer, a second pressure gauge, and a second gate valve.

6. A cooling device for a fully mechanized mining face according to claim 1, characterized in that: A second filter is installed at the inlet of the clean water tank.

7. A cooling device for a fully mechanized mining face according to claim 1, characterized in that: A second flow meter, a third thermometer, a third pressure gauge, and a third gate valve are installed on the third output pipe between the second electric pump and the second heat exchanger.

8. A cooling device for a fully mechanized mining face according to claim 1, characterized in that: A third filter is also installed on the third output pipe between the second electric pump and the second heat exchanger.

9. A cooling device for a fully mechanized mining face according to claim 1, characterized in that: The fourth output pipe is equipped with a fourth thermometer, a fourth pressure gauge, and a fourth gate valve.

10. A cooling device for a fully mechanized mining face according to claim 1, characterized in that: Both the first and second heat exchangers are plate heat exchangers.

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