Cold water generating device for mine and refrigerating system for mine

Abstract

The utility model provides a cold water generating device for a mine and a refrigerating system for the mine. The cold water generating device for the mine comprises a frame. The shell and tube heat exchanger is arranged in the frame, and the shell and tube heat exchanger is divided into two heat exchange structures in the radial direction of the frame. According to the cold water generating device for the mine and the refrigerating system for the mine, the length of the heat exchange tube of the shell-and-tube heat exchanger is matched with the length of the frame, and when the installation environment with narrow and even long and narrow space under the mine is encountered, the cold water generating device for the mine and the refrigerating system for the mine can be manufactured by reducing the sectional area of the frame and the shell-and-tube heat exchanger. Meanwhile, the lengths of the frame and the shell and tube heat exchanger are increased, so that the cold water generating device for the mine can adapt to narrow and even long and narrow spaces, the efficiency of refrigerating water under the mine can be guaranteed, and the problem that in the prior art, partial areas under the mine cannot be refrigerated due to the space size is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine equipment, in particular to a cold water generating device for a mine and a refrigeration system for a mine. Background Art

[0002] Coal plays a pivotal role in my country's economic construction. With the increasing depth of mine mining in my country, underground high temperature heat damage has become an important factor restricting coal mining. In order to eliminate the impact of mine heat damage and improve the working environment of coal miners, underground local refrigeration and air conditioning has been widely used in mines in my country, effectively solving the problem of high temperature deep well heat damage, ensuring mine operation safety and improving production efficiency.

[0003] However, in the prior art, the refrigeration equipment used at the end of the coal mining face generally adopts the structure of a finned surface cooler combination cabinet. However, the finned surface cooler combination cabinet has a large volume, a small heat exchange capacity, and a low refrigeration efficiency. When meeting the needs of the mine, a large number of them are required, which seriously occupies the space under the mine and affects the installation of other equipment; especially when the space is long and narrow, the finned surface cooler combination cabinet cannot be arranged, resulting in the problem of unreliable refrigeration in the mine. Utility Model Content

[0004] In order to solve the technical problems in the prior art that underground mine refrigeration equipment is large in size and occupies space for other equipment and cannot be used in narrow and long spaces, a cold water generating device and a mine refrigeration system are provided, which can adapt the length of the heat exchange tube of a shell and tube heat exchanger to the length of the frame, so that the heat exchange efficiency can be ensured by increasing the length to reduce the cross-sectional area, and can be used in narrow and long spaces.

[0005] A cold water generating device for mines, comprising:

[0006] frame;

[0007] A shell and tube heat exchanger, wherein the shell and tube heat exchanger is arranged in the frame and is divided into two heat exchange structures along the radial direction of the frame;

[0008] Each of the heat exchange structures is connected to the refrigerant system via a refrigerant connecting component, and the two refrigerant connecting components are respectively arranged at two ends of the frame in the length direction.

[0009] The cross section of the frame is rectangular, the cross section of the shell and tube heat exchanger is circular, and a usable space is enclosed between the circle and the top corners of the rectangle, and the refrigerant communication component is arranged in the usable space.

[0010] The shell and tube heat exchanger comprises a left water chamber, a heat exchange cavity and a right water chamber, wherein the left water chamber is divided into a first heat exchange portion and a second heat exchange portion along the radial direction of the frame, and the right water chamber is divided into a third heat exchange portion and a fourth heat exchange portion along the radial direction of the frame;

[0011] The two heat exchange structures include a first heat exchange structure and a second heat exchange structure, the first heat exchange part and the third heat exchange part are connected through a first heat exchange tube, the first heat exchange tube is located in the heat exchange cavity, and the first heat exchange part, the first heat exchange tube and the third heat exchange part together constitute the first heat exchange structure;

[0012] The second heat exchange part and the fourth heat exchange part are connected through a second heat exchange tube, the second heat exchange tube is located in the heat exchange cavity, and the second heat exchange part, the second heat exchange tube and the fourth heat exchange part together constitute the second heat exchange structure.

[0013] Along the height direction of the frame, the first heat exchange section is divided into a first inlet flow area and a first outlet flow area, and the fourth heat exchange section is divided into a fourth inlet flow area and a fourth outlet flow area;

[0014] In the refrigerant communication component corresponding to the first heat exchange structure, the refrigerant inlet pipe of the refrigerant communication component is communicated with the first inflow area, and the refrigerant outlet pipe of the refrigerant communication component is communicated with the first outflow area;

[0015] In the refrigerant communication component corresponding to the second heat exchange structure, the refrigerant inlet pipe of the refrigerant communication component is communicated with the fourth inlet area, and the refrigerant outlet pipe of the refrigerant communication component is communicated with the fourth outlet area.

[0016] The shell and tube heat exchanger further comprises a cold water connecting pipe, one end of which is connected to the heat exchange chamber, and the other end of which is located on the side surface of the frame.

[0017] The refrigerant communication component includes a refrigerant inlet pipe and two thermal expansion valves. The inlet end of the refrigerant inlet pipe is located on the end surface of the frame, and the two thermal expansion valves are connected in parallel between the outlet end of the refrigerant inlet pipe and the heat exchange structure.

[0018] The refrigerant connecting component also includes a refrigerant outlet pipe, one end of which is located on the end surface of the frame, the other end of which is connected to the heat exchange structure, and the balance pipe of the thermal expansion valve is connected to the refrigerant outlet pipe.

[0019] The cold water generating device for mines also includes a first mounting bracket, and the balance pipe is arranged on the corresponding thermal expansion valve through the first mounting bracket.

[0020] The cold water generating device for mines also includes a second mounting bracket, which is arranged on the frame, and the two thermal expansion valves are both arranged on the second mounting bracket.

[0021] A sealing plate is arranged on the frame.

[0022] The sealing plate includes a first metal layer, a filling layer, and a second metal layer which are arranged in sequence, wherein the first metal layer faces the inside of the frame, and the second metal layer faces the outside of the frame.

[0023] A refrigeration system for mines comprises the above-mentioned cold water generating device for mines.

[0024] The utility model provides a mine cold water generator and a mine refrigeration system. The shell and tube heat exchanger and the refrigerant connection assembly are protected and installed by setting a frame, thereby ensuring the safe and reliable operation of the mine cold water generator. The frame can also be directly moved to facilitate the mobile installation of the mine cold water generator. The heat exchange tube length of the shell and tube heat exchanger is adapted to the length of the frame. When facing a narrow or even narrow and long installation environment in the mine, the cross-sectional area of ​​the frame and the shell and tube heat exchanger can be reduced, and the length of the frame and the shell and tube heat exchanger can be increased. The cold water generator for the mine can be adapted to the narrow or even narrow and long space, and the efficiency of the cooling water in the mine can be ensured, thereby solving the problem that some areas in the mine cannot be refrigerated due to the space size in the prior art. At the same time, the shell and tube heat exchanger is divided into two heat exchange structures along the radial direction of the frame. The two heat exchange structures can be used in one standby and the other in the other, thereby ensuring the reliability of the mine cold water generator. The two heat exchange structures can also work at the same time to improve the refrigeration efficiency of the mine cold water generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a cold water generating device for a mine provided by an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the structure of a mine cold water generating device provided by an embodiment of the utility model without a sealing plate;

[0027] Figure 3 A schematic diagram of the structure of a shell and tube heat exchanger and a refrigerant communication component of a cold water generating device for a mine provided by an embodiment of the utility model;

[0028] Figure 4 A side view of a shell and tube heat exchanger and a refrigerant connection assembly of a cold water generating device for a mine provided by an embodiment of the utility model;

[0029] Figure 5A cross-sectional view of the left water chamber of the shell and tube heat exchanger of the cold water generating device for mines provided by the embodiment of the utility model;

[0030] Figure 6 A cross-sectional view of the right water chamber of the shell and tube heat exchanger of the cold water generating device for mines provided in an embodiment of the utility model;

[0031] Figure 7 A cross-sectional view of a shell and tube heat exchanger of a cold water generating device for a mine provided by an embodiment of the utility model;

[0032] Figure 8 A partial schematic diagram of a cold water generating device for a mine provided by an embodiment of the utility model;

[0033] Fig. 9 Another partial schematic diagram of a cold water generating device for a mine provided by an embodiment of the utility model;

[0034] Fig.10 A partial schematic diagram of a thermal expansion valve, a first mounting bracket, and a second mounting bracket of a cold water generating device for a mine provided by an embodiment of the utility model;

[0035] In the figure:

[0036] 1. Frame; 2. Shell and tube heat exchanger; 31. Refrigerant inlet pipe; 32. Thermal expansion valve; 33. Refrigerant outlet pipe; 34. Balance pipe; 35. First mounting bracket; 36. Second mounting bracket; 21. First heat exchange section; 22. Second heat exchange section; 23. Third heat exchange section; 24. Fourth heat exchange section; 211. First inflow area; 212. First outflow area; 241. Fourth inflow area; 242. Fourth outflow area; 25. Cold water connecting pipe; 29. ​​Heat exchange chamber; 4. Sealing plate. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0038] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the prior art, the refrigeration equipment used at the end of the coal mining face generally adopts the structure of a finned surface cooler combination cabinet. However, the finned surface cooler combination cabinet is large in size, has a small heat exchange rate, and has a low refrigeration efficiency. When meeting the needs of the mine, a large number of finned surface coolers are required, which seriously occupies the space under the mine and affects the installation of other equipment. In particular, when the space is long and narrow, the finned surface cooler combination cabinet cannot be arranged, resulting in the problem of unreliable refrigeration in the mine. To this end, the present application provides a method such as Figures 1 to 10The cold water generating device for mine shown in the figure comprises: a frame 1; a shell and tube heat exchanger 2, wherein the shell and tube heat exchanger 2 is arranged in the frame 1, and along the radial direction of the frame 1, the shell and tube heat exchanger 2 is divided into two heat exchange structures; each of the heat exchange structures is connected to the refrigerant system through a refrigerant connecting component, and the two refrigerant connecting components are respectively arranged at both ends of the length direction of the frame 1. The frame 1 is provided to protect and install the shell and tube heat exchanger 2 and the refrigerant connection assembly, thereby ensuring the safe and reliable operation of the mine cold water generator. The frame 1 can also be directly moved to facilitate the mobile installation of the mine cold water generator. The length of the heat exchange tube of the shell and tube heat exchanger 2 is adapted to the length of the frame 1. When facing a narrow or even long installation environment in the mine, the cross-sectional area of ​​the frame 1 and the shell and tube heat exchanger 2 can be reduced, while increasing the length of the frame 1 and the shell and tube heat exchanger 2. This allows the mine cold water generator to adapt to the narrow or even long space, while ensuring the efficiency of cooling water in the mine, thereby solving the problem in the prior art that some areas in the mine cannot be cooled due to the space size. At the same time, the shell and tube heat exchanger 2 is divided into two heat exchange structures along the radial direction of the frame 1. The two heat exchange structures can be used in a standby mode to ensure the reliability of the mine cold water generator. The two heat exchange structures can also work at the same time to improve the cooling efficiency of the mine cold water generator. Figure 5 As shown in the figure, the left and right directions are the width directions of the frame 1. The two heat exchange structures in the figure are arranged along the width direction of the frame 1. At this time, there is no height difference between the two heat exchange structures, so that the amount of refrigerant that can be obtained when the two heat exchange structures work at the same time will not be affected by the height difference and cause the problem of different heat exchange efficiency. It is ensured that when any heat exchange structure is working, the cold water generating device for mines can achieve the preset heat exchange efficiency, thereby ensuring the working reliability of the cold water generating device for mines.

[0043] Specifically, the frame 1 includes upper and lower horizontal beams, upper and lower longitudinal beams and four corner columns that together form a rectangular structure. The upper and lower horizontal beams can determine the length of the frame 1, and the upper and lower longitudinal beams and the four corner columns together determine the cross-sectional area of ​​the frame 1. When designing a cold water generating device for a mine, the cross-sectional area of ​​the frame 1 is determined according to the space size under the mine, and the required heat exchange efficiency of the shell and tube heat exchanger 2 is determined according to the refrigeration load demand, and then the length of the heat exchange tube of the shell and tube heat exchanger 2 can be determined. The length direction of the heat exchange tube of the shell and tube heat exchanger 2 is parallel to the length direction of the rectangular structure, so the length of the upper and lower horizontal beams can be determined, and the size design of the frame 1 is completed.

[0044] A lifting lug structure is also provided on the frame 1 to facilitate the movement of the cold water generating device for the mine.

[0045] A reinforcing beam is provided on the frame 1, and the reinforcing beam is utilized to increase the structural strength of the frame 1, so as to improve the structural strength of the cold water generating device for mines.

[0046] A water receiving pan is also provided on the frame 1, and the water receiving pan is located below the shell and tube heat exchanger 2. The water receiving pan can receive condensed water or leaked water generated on the shell and tube heat exchanger 2, and a drain port is provided on the water receiving pan for directional drainage to ensure the reliable operation of the cold water generating device for mines.

[0047] As an implementation mode, the cross-section of the frame 1 is rectangular, the cross-section of the shell and tube heat exchanger 2 is circular, and a usable space is enclosed between the circle and the top corners of the rectangle. The refrigerant connecting component is arranged in the usable space. By arranging the refrigerant connecting component in the usable space, the volume of the cold water generating device for mines can be reduced as much as possible, thereby further improving the application capability of the cold water generating device for mines in narrow or even long and narrow spaces under mines.

[0048] Specifically, the shell and tube heat exchanger 2 includes a left water chamber, a heat exchange cavity 29 and a right water chamber, the left water chamber is divided into a first heat exchange part 21 and a second heat exchange part 22 along the radial direction of the frame 1, and the right water chamber is divided into a third heat exchange part 23 and a fourth heat exchange part 24 along the radial direction of the frame 1; the two heat exchange structures include a first heat exchange structure and a second heat exchange structure, the first heat exchange part 21 and the third heat exchange part 23 are connected through a first heat exchange tube, the first heat exchange tube is located in the heat exchange cavity 29, and the first heat exchange part 21, the first heat exchange tube and the third heat exchange part 23 together constitute the first heat exchange structure; the second heat exchange part 22 and the fourth heat exchange part 24 are connected through a second heat exchange tube, the second heat exchange tube is located in the heat exchange cavity 29, and the second heat exchange part 22, the second heat exchange tube and the fourth heat exchange part 24 together constitute the second heat exchange structure. By separating the left water chamber and the right water chamber, and connecting the first heat exchange part 21 and the third heat exchange part 23 by using the first heat exchange pipe, the refrigerant flowing into the first heat exchange part 21 can flow into the third heat exchange part 23 through the first heat exchange pipe, and then be discharged through the third heat exchange part 23 to complete the heat exchange, or can return in the third heat exchange part 23 and flow into the first heat exchange part 21 again through the first heat exchange pipe, and finally be discharged through the first heat exchange part 21 to complete the heat exchange; similarly, the second heat exchange part 22 and the fourth heat exchange part 24 are connected by using the second heat exchange pipe, The refrigerant flowing into the fourth heat exchange part 24 can flow into the second heat exchange part 22 through the second heat exchange tube, and then be discharged through the second heat exchange part 22 to complete the heat exchange, or it can return in the second heat exchange part 22 and flow into the fourth heat exchange part 24 through the second heat exchange tube again, and finally be discharged through the fourth heat exchange part 24 to complete the heat exchange, wherein the first heat exchange tube and the second heat exchange tube are both located in the heat exchange cavity 29, and the first heat exchange tube and the second heat exchange tube can both exchange heat with the water in the heat exchange cavity 29, so each heat exchange structure can work independently to achieve the purpose of cooling water.

[0049] In order to minimize the size of the refrigerant connecting component, the refrigerant connecting component corresponding to the same heat exchange structure is arranged at the same end of the shell and tube heat exchanger 2. At this time, the refrigerant needs to be deflected in the shell and tube heat exchanger 2, that is, the refrigerant flowing into the first heat exchange part 21 can flow into the third heat exchange part 23 through the first heat exchange tube, and then flow into the first heat exchange part 21 again through the first heat exchange tube after turning back in the third heat exchange part 23, and finally be discharged through the first heat exchange part 21 to complete the heat exchange; similarly, the refrigerant flowing into the fourth heat exchange part 24 can flow into the second heat exchange part 22 through the second heat exchange tube, and then flow into the second heat exchange part 22 after turning back in the second heat exchange part 22. The refrigerant flows through the second heat exchange tube to the fourth heat exchange part 24 again, and is finally discharged through the fourth heat exchange part 24 to complete the heat exchange. To this end, along the height direction of the frame 1, the first heat exchange part 21 is divided into a first inlet area 211 and a first outlet area 212, and the fourth heat exchange part 24 is divided into a fourth inlet area 241 and a fourth outlet area 242; in the refrigerant connecting component corresponding to the first heat exchange structure, the refrigerant inlet pipe 31 of the refrigerant connecting component is connected to the first inlet area 211, and the refrigerant outlet pipe of the refrigerant connecting component is connected to the first outlet area 212. The refrigerant flowing into the first heat exchange part 21 first flows into The refrigerant flows into the first inlet area 211, and flows into the third heat exchange part 23 through the first heat exchange pipe connected to the first inlet area 211, and then returns in the third heat exchange part 23 and flows into the first outlet area 212 again through the first heat exchange pipe connected to the first outlet area 212, and finally is discharged through the first outlet area 212 to complete the heat exchange. At this time, the refrigerant can flow twice in the heat exchange cavity 29 to effectively improve the heat exchange efficiency of the refrigerant, thereby improving the heat exchange efficiency of the cold water generating device for the mine; in the refrigerant connecting component corresponding to the second heat exchange structure, the refrigerant inlet pipe of the refrigerant connecting component is connected to the fourth inlet area 24 1 is connected, the refrigerant outlet pipe of the refrigerant connecting component is connected with the fourth outlet flow area 242, and the refrigerant flowing into the fourth heat exchange part 24 first flows into the fourth inlet flow area 241, and flows into the second heat exchange part 22 through the second heat exchange pipe connected with the fourth inlet flow area 241, and then turns back in the second heat exchange part 22 and flows into the fourth outlet flow area 242 again through the second heat exchange pipe connected with the fourth outlet flow area 242, and finally is discharged through the fourth outlet flow area 242 to complete the heat exchange. At this time, the refrigerant can flow twice in the heat exchange cavity 29 to effectively improve the heat exchange efficiency of the refrigerant, thereby improving the heat exchange efficiency of the cold water generating device for mines.

[0050] The shell and tube heat exchanger 2 further includes a cold water connecting pipe 25, one end of which is connected to the heat exchange chamber 29, and the other end is located on the side of the frame 1. The cold water connecting pipe 25 is used to realize the flow of water in the heat exchange chamber 29. Water can flow into the heat exchange chamber 29 through the cold water connecting pipe 25, and cold water after heat exchange can also flow out of the heat exchange chamber 29 through the cold water connecting pipe 25. In order to avoid structural interference between the cold water connecting pipe 25 and the refrigerant connection component, the cold water connecting pipe 25 can be set on the side of the shell and tube heat exchanger 2. At this time, water can flow in and out of the side of the frame 1 to ensure the structural reliability of the mine cold water generator. In addition, only the waterway pipe is set on the side of the frame 1, and the diameter of the waterway pipe is not greater than the height of the frame 1. Therefore, the waterway pipe does not have a significant impact on the cross-sectional area of ​​the mine cold water generator, but can be accommodated between the frame 1 and the inner wall of the narrow space to ensure the application range of the mine cold water generator.

[0051] Since the environment in the mine requires that an electric structure cannot be used, for this reason, the refrigerant communication component includes a refrigerant inlet pipe 31 and two thermal expansion valves 32. The inlet end of the refrigerant inlet pipe 31 is located on the end face of the frame 1. The two thermal expansion valves 32 are connected in parallel between the outlet end of the refrigerant inlet pipe 31 and the heat exchange structure. By using the thermal expansion valve 32, the mine cold water generator can avoid using an electric control structure, ensure the working reliability of the mine cold water generator, and avoid the problem of explosion in the mine. Since the thermal expansion valve 32 has a balance pipe, the thermal expansion valve 32 vibrates greatly during use. Therefore, two thermal expansion valves 32 are set to reduce vibration, further improve the working reliability of the mine cold water generator, and reduce the noise of the mine cold water generator. Moreover, by setting the inlet end of the refrigerant inlet pipe 31 on the end face of the frame 1, the refrigerant inlet pipe 31 only occupies the length direction of the frame 1, and does not affect the cross-sectional area of ​​the mine cold water generator, which still meets the requirements of application in a narrow or even narrow space.

[0052] The refrigerant connection assembly also includes a refrigerant outlet pipe 33, one end of which is located on the end face of the frame 1, and the other end of which is connected to the heat exchange structure. The balance pipe 34 of the thermal expansion valve 32 is connected to the refrigerant outlet pipe 33, and the pressure value at the refrigerant outlet pipe 33 is obtained by using the balance pipe 34. The thermal expansion valve 32 can dynamically adjust the opening according to this pressure value, so that the shell and tube heat exchanger 2 can be at the optimal heat exchange efficiency, thereby ensuring the working efficiency of the cold water generating device for mines. Moreover, by setting the end of the refrigerant outlet pipe 33 on the end face of the frame 1, the refrigerant outlet pipe 33 only occupies the length direction of the frame 1, and does not affect the cross-sectional area of ​​the cold water generating device for mines, and still meets the requirements for application in narrow or even narrow and long spaces.

[0053] In order to further reduce the vibration of the thermal expansion valve 32, especially the vibration caused by the balance pipe 34, the mine cold water generator further includes a first mounting bracket 35, and the balance pipe 34 is arranged on the corresponding thermal expansion valve 32 through the first mounting bracket 35. The balance pipe 34 is connected to the thermal expansion valve 32 by using the first mounting bracket 35, that is, the stress strain of the balance pipe 34 can be qualified to achieve reliable fixation of the balance pipe 34, and the problem of excessive length of the connection structure size when the balance pipe 34 is directly connected to the frame 1 and the problem of vibration being transmitted to the frame 1 causing resonance of the frame 1 can be avoided, thereby improving the working reliability of the mine cold water generator and reducing the noise of the mine cold water generator.

[0054] The mine cold water generator also includes a second mounting bracket 36, which is arranged on the frame 1, and the two thermal expansion valves 32 are arranged on the second mounting bracket 36. The thermal expansion valve 32 is installed and fixed by the second mounting bracket 36. At the same time, since the balance pipe 34 is connected to the thermal expansion valve 32 through the first mounting bracket 35, the connection position between the first mounting bracket 35 and the balance pipe 34, the connection position between the first mounting bracket 35 and the thermal expansion valve 32, the connection position between the second mounting bracket 36 and the thermal expansion valve 32, and the connection position between the second mounting bracket 36 and the frame 1 can all weaken the vibration of the balance pipe 34, so that the thermal expansion valve 32 can be reliably fixed, and the problem of the excessive length of the connection structure size caused by directly connecting the balance pipe 34 to the frame 1 and the problem of the vibration being transmitted to the frame 1 causing the resonance of the frame 1 can be avoided, thereby improving the working reliability of the mine cold water generator and reducing the noise of the mine cold water generator.

[0055] Since there is a lot of dust and coal ash in the environment of the mine and there is a problem of falling gravel, a sealing plate 4 is provided on the frame 1. The sealing plate 4 is used to seal the side and end faces of the frame 1 to ensure the safety and reliability of the cold water generating device for the mine.

[0056] The sealing plate 4 includes a first metal layer, a filling layer and a second metal layer arranged in sequence, the first metal layer faces the inside of the frame 1, and the second metal layer faces the outside of the frame 1. The first metal layer and the second metal layer are used to ensure the structural strength of the sealing plate 4, while the filling layer can buffer and reduce the impact on the second metal layer, and can also achieve flame retardant, anti-static, and heat preservation effects, reduce the impact of the external environment on the cold water generating device for mines, and improve the working reliability of the cold water generating device for mines. Preferably, the material of the filling layer can be selected from polyurethane material.

[0057] A refrigeration system for mines comprises the above-mentioned cold water generating device for mines.

[0058] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A cold water generating device for mines, characterized in that: include: Framework (1); A shell and tube heat exchanger (2), wherein the shell and tube heat exchanger (2) is arranged in the frame (1), and along the radial direction of the frame (1), the shell and tube heat exchanger (2) is divided into two heat exchange structures; Each of the heat exchange structures is connected to the refrigerant system via a refrigerant connecting component, and the two refrigerant connecting components are respectively arranged at two ends of the frame (1) in the length direction.

2. The cold water generating device for mine according to claim 1, characterized in that: The cross section of the frame (1) is rectangular, the cross section of the shell and tube heat exchanger (2) is circular, and a usable space is enclosed between the circle and the top corners of the rectangle, and the refrigerant connecting component is arranged in the usable space.

3. The cold water generating device for mine according to claim 2, characterized in that: The shell and tube heat exchanger (2) comprises a left water chamber, a heat exchange cavity (29) and a right water chamber, wherein the left water chamber is divided into a first heat exchange portion (21) and a second heat exchange portion (22) along the radial direction of the frame (1), and the right water chamber is divided into a third heat exchange portion (23) and a fourth heat exchange portion (24) along the radial direction of the frame (1); The two heat exchange structures include a first heat exchange structure and a second heat exchange structure, the first heat exchange part (21) and the third heat exchange part (23) are connected via a first heat exchange pipe, the first heat exchange pipe is located in the heat exchange cavity (29), and the first heat exchange part (21), the first heat exchange pipe and the third heat exchange part (23) together constitute the first heat exchange structure; The second heat exchange part (22) and the fourth heat exchange part (24) are connected via a second heat exchange tube, the second heat exchange tube is located in the heat exchange cavity (29), and the second heat exchange part (22), the second heat exchange tube and the fourth heat exchange part (24) together constitute the second heat exchange structure.

4. The cold water generating device for mine according to claim 3, characterized in that: Along the height direction of the frame (1), the first heat exchange portion (21) is divided into a first inflow area (211) and a first outflow area (212), and the fourth heat exchange portion (24) is divided into a fourth inflow area (241) and a fourth outflow area (242); In the refrigerant communication component corresponding to the first heat exchange structure, the refrigerant inlet pipe of the refrigerant communication component is connected to the first inflow area (211), and the refrigerant outlet pipe of the refrigerant communication component is connected to the first outflow area (212); In the refrigerant connecting component corresponding to the second heat exchange structure, the refrigerant inlet pipe of the refrigerant connecting component is connected to the fourth inlet area (241), and the refrigerant outlet pipe of the refrigerant connecting component is connected to the fourth outlet area (242).

5. The cold water generating device for mine according to claim 3, characterized in that: The shell and tube heat exchanger (2) further comprises a cold water connecting pipe (25), one end of which is connected to the heat exchange chamber (29) and the other end of which is located on the side of the frame (1).

6. The cold water generating device for mine according to claim 1, characterized in that: The refrigerant connecting component includes a refrigerant inlet pipe (31) and two thermal expansion valves (32), wherein the inlet end of the refrigerant inlet pipe (31) is located on the end surface of the frame (1), and the two thermal expansion valves (32) are connected in parallel between the outlet end of the refrigerant inlet pipe (31) and the heat exchange structure.

7. The cold water generating device for mine according to claim 6, characterized in that: The refrigerant connecting component also includes a refrigerant outlet pipe (33), one end of which is located on the end surface of the frame (1), and the other end of which is connected to the heat exchange structure. The balance pipe (34) of the thermal expansion valve (32) is connected to the refrigerant outlet pipe (33).

8. The cold water generating device for mine according to claim 7, characterized in that: The mine cold water generating device further comprises a first mounting bracket (35), and the balance pipe (34) is arranged on the corresponding thermal expansion valve (32) through the first mounting bracket (35).

9. The cold water generating device for mine according to claim 6, characterized in that: The mine cold water generating device further comprises a second mounting bracket (36), wherein the second mounting bracket (36) is arranged on the frame (1), and the two thermal expansion valves (32) are both arranged on the second mounting bracket (36).

10. The cold water generating device for mine according to claim 1, characterized in that: A sealing plate (4) is provided on the frame (1).

11. The cold water generating device for mine according to claim 10, characterized in that: The sealing plate (4) comprises a first metal layer, a filling layer and a second metal layer which are arranged in sequence, the first metal layer faces the inside of the frame (1), and the second metal layer faces the outside of the frame (1).

12. A refrigeration system for a mine, characterized in that: A cold water generating device for mines comprising any one of claims 1 to 11.

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