Refrigeration equipment and refrigeration system

Abstract

The utility model relates to the field of mine air conditioning equipment, in particular to refrigeration equipment and a refrigeration system. The refrigeration equipment comprises an equipment body, a first water turbine, a first fan blade, a heat exchanger and a working medium circulating pipeline; the equipment body is provided with a heat exchange air duct, the heat exchange air duct is provided with an air inlet and a first air outlet, the first water turbine is arranged at the first air outlet, and the first fan blade is connected with the first water turbine; the heat exchanger is installed in the heat exchange air duct, the interior of the heat exchanger is used for introducing a circulating working medium to conduct heat exchange with cooling air and cool the cooling air, and the working medium circulating pipeline comprises a working medium inlet pipe, a working medium outlet pipe, a first bypass pipeline and a first reversing valve set, and the heat exchanger and the first water turbine are connected between the working medium inlet pipe and the working medium outlet pipe in series; the first bypass pipeline is connected with the first water turbine in parallel, and the first reversing valve set is used for controlling conduction of the first water turbine and / or controlling conduction of the first bypass pipeline. The refrigerating unit can achieve switching of the water path and the fluorine path, and the refrigerating requirements of different scenes are met.

Description

Technical Field

[0001] The present application relates to the field of mine air conditioning, and in particular to a refrigeration device and a refrigeration system. 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] In mine equipment, conventional local refrigeration equipment is generally fluorine machine or water machine, both of which are single refrigerant medium. In the coal mining face and the tunneling face, the distance between the construction location and the refrigeration equipment is different. Different refrigeration equipment, fluorine machine or water machine, will be used according to different heat exchange performance. However, at different stages of construction, the tunneling face will be transformed into a coal mining face. In this way, replacing the refrigeration equipment is both troublesome and costly. Utility Model Content

[0004] The present application provides a refrigeration unit and a refrigeration system, wherein the refrigeration unit can realize switching between a water circuit and a fluorine circuit to meet the refrigeration needs of different scenarios.

[0005] In a first aspect, the present application provides a refrigeration unit, comprising:

[0006] The device body is provided with a heat exchange air duct, wherein the heat exchange air duct is provided with an air inlet and a first air outlet;

[0007] A first water turbine is disposed at the first air outlet;

[0008] a first fan blade connected to the first water turbine and driven by the first water turbine to rotate, driving cooling air to be discharged from the first air outlet;

[0009] A heat exchanger is installed in the heat exchange air duct, and the interior of the heat exchanger is used to pass the circulating medium and the cooling air for heat exchange and to cool the cooling air;

[0010] The working fluid circulation pipeline includes a working fluid inlet pipe, a working fluid outlet pipe, a first bypass pipeline and a first reversing valve group. The heat exchanger and the first water turbine are connected in series between the working fluid inlet pipe and the working fluid outlet pipe. The first bypass pipeline is connected in parallel with the first water turbine. The first reversing valve group is used to control the conduction of the first water turbine and / or control the conduction of the first bypass pipeline.

[0011] In some embodiments, the working medium inlet pipe is connected to the inlet of the heat exchanger, the first bypass pipeline and the first turbine are connected in parallel between the outlet of the heat exchanger and the working medium outlet pipe, and the first reversing valve group includes:

[0012] a first control valve, disposed at the inlet of the first turbine;

[0013] a second control valve, disposed at the outlet of the first water turbine;

[0014] The third control valve is arranged in the first bypass pipeline.

[0015] In some embodiments, the heat exchanger is provided in two groups, the two groups of heat exchangers are symmetrically arranged on both sides of the equipment body, and the first turbine is arranged at the first end of the equipment body.

[0016] In some embodiments, the heat exchange air duct is provided with a second air outlet, and the first air outlet and the second air outlet are located at two ends of the device body;

[0017] The refrigeration equipment includes a second water turbine and a second fan blade, the second water turbine is arranged at the second air outlet, the second fan blade is connected to the second water turbine and rotates under the drive of the second water turbine to drive cooling air to be discharged from the second air outlet;

[0018] The working fluid circulation pipeline includes an intermediate connecting pipe, a second bypass pipe and a second reversing valve group. The intermediate connecting pipe is connected between the first water turbine and the second water turbine. The second water turbine and the second bypass pipe are connected in parallel and then connected in series between the intermediate connecting pipe and the working fluid outlet pipe. The second reversing valve group is used to control the conduction of the second water turbine and / or control the conduction of the second bypass pipe.

[0019] In some embodiments, the second reversing valve group includes:

[0020] a fourth control valve, provided at the inlet of the second turbine;

[0021] a fifth control valve, provided at the outlet of the second hydraulic turbine;

[0022] The sixth control valve is arranged in the second bypass pipeline.

[0023] In some embodiments, the device body includes a device frame and a sealing plate installed on the device frame, and a water receiving tray is provided at the bottom of the device frame.

[0024] In some embodiments, a first air guide cover is provided on the outer periphery of the first wind blade, and the first air guide cover and the first air outlet are transitionally connected at a first preset spinning angle;

[0025] And / or, a second air guide cover is provided on the outer periphery of the second fan blade, and the second air guide cover and the second air outlet are transitionally connected at a second preset spinning angle.

[0026] In some embodiments, a first mesh cover is provided at one end of the first air guide cover away from the first air outlet;

[0027] And / or, one end of the second air guide cover away from the second air outlet is connected to the second mesh cover.

[0028] In a second aspect, the present application provides a refrigeration system, comprising a plurality of groups of refrigeration equipment as described in any one of the above items.

[0029] In some embodiments, it also includes a working fluid inlet main pipe and a working fluid outlet main pipe, and all the refrigeration equipment are connected in parallel between the working fluid inlet main pipe and the working fluid outlet main pipe through the working fluid inlet pipe and the working fluid outlet pipe.

[0030] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: by adjusting the first reversing valve group to control the conduction of the first bypass pipeline, the inlet and outlet of the first turbine are controlled to be closed, and a refrigerant such as a fluorine refrigerant can be introduced into the heat exchanger through the working medium inlet pipe to perform evaporative heat absorption refrigeration, and the refrigerant after heat exchange with the air sent into the heat exchange air duct flows out through the working medium outlet pipe;

[0031] By adjusting the first reversing valve group to control the closing of the first bypass pipeline, the inlet and outlet of the first water turbine are controlled to be connected, and the chilled water input into the well is used for heat exchange and refrigeration. The chilled water enters the heat exchanger from the working medium inlet pipe and exchanges heat with the cooling air flowing through the heat exchange air duct. The chilled water after heat exchange flows into the first water turbine through the inlet of the first water turbine, drives the first water turbine to rotate and drives the first fan blade to rotate, drives the cooling air to be discharged from the first air outlet, and fully utilizes the gravitational potential energy of the chilled water to drive the first fan blade to rotate through the first water turbine to generate cooling air flowing through the heat exchange air duct, thereby ensuring the refrigeration effect of using chilled water for heat exchange;

[0032] The first reversing valve group can also be adjusted to control partial conduction of the first bypass pipeline, control the conduction of the inlet and outlet of the first water turbine, and use the chilled water input into the well for heat exchange and refrigeration. The chilled water enters the heat exchanger from the working medium inlet pipe and exchanges heat with the cooling air flowing through the heat exchange air duct. The chilled water after heat exchange flows into the first water turbine through the inlet of the first water turbine, drives the first water turbine to rotate and drives the first fan blade to rotate, drives the cooling air to be discharged from the first air outlet, and makes full use of the gravitational potential energy of the chilled water to drive the first fan blade to rotate through the first water turbine to generate cooling air flowing through the heat exchange air duct, thereby ensuring the refrigeration effect of chilled water heat exchange; the first bypass pipeline can share the chilled water flow rate flowing through the first water turbine when it is partially conducted, thereby adjusting the rotation speed of the first water turbine and the first fan blade, and changing the heat exchange efficiency of the heat exchanger.

[0033] The above-mentioned refrigeration equipment can not only realize heat exchange refrigeration using fluorine refrigerants or other refrigerants by controlling the first reversing valve group to switch the fluorine path, but can also control the first reversing valve group to switch the water path to use chilled water for heat exchange refrigeration, thereby meeting the refrigeration needs of different scenarios, avoiding frequent replacement of refrigeration equipment in different operation processes, and improving the convenience and efficiency of underground operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0036] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0037] Figure 1 A top view of a refrigeration device provided in an embodiment of the present application;

[0038] Figure 2 A front view of a refrigeration device provided in an embodiment of the present application;

[0039] Figure 3 An internal structural diagram of a refrigeration device provided in an embodiment of the present application;

[0040] Figure 4 for Figure 3 An intuitive diagram of the working fluid circulation pipeline;

[0041] Figure 5 for Figure 4 A front view of

[0042] Figure 6 for Figure 4 A top view of

[0043] Figure 7 A schematic diagram of flow path switching of a refrigeration device provided in one embodiment of the present application;

[0044] Figure 8 A simplified diagram of flow path switching of a refrigeration device provided in another embodiment of the present application.

[0045] Description of reference numerals:

[0046] 10-equipment frame; 11-sealing plate; 12-water tray; 13-heat exchanger; 14-first turbine; 15-first guide cover; 16-first mesh cover; 17-working fluid inlet pipe; 18-first bypass pipeline; 19-first control valve; 20-second control valve; 21-third control valve; 22-middle connecting pipe; 23-second bypass pipeline; 24-second turbine; 25-second guide cover; 26-second mesh cover; 27-fourth control valve; 28-fifth control valve; 29-sixth control valve; 30-working fluid outlet pipe. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0048] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0049] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0050] In order to solve the technical problem in the prior art that different refrigeration equipment is required for different underground operation processes, which causes construction inconvenience, the present application provides a refrigeration equipment and a refrigeration system that are suitable for the refrigeration needs of various scenarios. There is no need to replace the refrigeration equipment, thereby improving the convenience and efficiency of underground operations.

[0051] The present application embodiment provides a refrigeration unit, such as Figures 1 to 3 As shown, the refrigeration equipment mainly includes an equipment body, a first water turbine 14, a first fan blade, a heat exchanger 13 and a working medium circulation pipeline; the equipment body is provided with a heat exchange air duct, and the heat exchange air duct is provided with an air inlet and a first air outlet. The cooling air can enter the heat exchange air duct from the air inlet, and can be discharged from the first air outlet after heat exchange with the heat exchanger 13 installed in the heat exchange air duct. The first water turbine 14 is arranged at the first air outlet, and the first fan blade is connected to the first water turbine 14; the interior of the heat exchanger 13 is used to pass the circulating working medium, and the circulating working medium and the cooling air flowing through the heat exchange air duct exchange heat and cool the cooling air.

[0052] The working fluid circulation pipeline includes a working fluid inlet pipe 17, a working fluid outlet pipe 30, a first bypass pipe 18 and a first reversing valve group. The heat exchanger 13 and the first turbine 14 are connected in series between the working fluid inlet pipe 17 and the working fluid outlet pipe 30. The first bypass pipe 18 is connected in parallel with the first turbine 14. The first reversing valve group is used to control the conduction of the first turbine 14 and / or control the conduction of the first bypass pipe 18. The circulating working fluid can flow from the working fluid inlet pipe 17 into the heat exchanger 13 to exchange heat with the cooling air, and be discharged from the working fluid outlet pipe 30 after switching the appropriate flow path through the first reversing valve group.

[0053] When the above refrigeration equipment is in operation:

[0054] By adjusting the first reversing valve group to control the conduction of the first bypass pipeline 18, and at the same time controlling the inlet and outlet of the first turbine 14 to be closed, that is, the refrigeration equipment is switched to the fluorine circuit conduction state, and the refrigerant such as fluorine refrigerant can be introduced into the heat exchanger 13 through the working medium inlet pipe 17 for evaporative heat absorption refrigeration, and the refrigerant after heat exchange with the air sent into the heat exchange air duct flows out through the working medium outlet pipe 30. In the fluorine circuit conduction refrigeration state, the heat exchanger 13 can exchange heat by natural convection; in order to improve the heat exchange efficiency, a blower can also be arranged at the air inlet as needed, and cooling air can be sent into the heat exchange air duct through the blower to realize forced convection heat exchange between the cooling air and the fluorine refrigerant in the heat exchanger 13.

[0055] By adjusting the first reversing valve group to control the first bypass pipeline 18 to be closed, the inlet and outlet of the first water turbine 14 are controlled to be open, that is, the refrigeration equipment enters a water circuit open state. The chilled water input into the well is used for heat exchange refrigeration, and the chilled water enters the heat exchanger 13 from the working medium inlet pipe 17 and exchanges heat with the cooling air flowing through the heat exchange air duct. The chilled water after heat exchange flows into the first water turbine 14 through the inlet of the first water turbine 14, drives the first water turbine 14 to rotate and drives the first fan blade to rotate, drives the cooling air to be discharged from the first air outlet, and fully utilizes the gravitational potential energy of the chilled water in the process of being transported to the well. The first water turbine 14 drives the first fan blade to rotate to generate cooling air flowing through the heat exchange air duct, and ensures the refrigeration effect of forced convection heat exchange of chilled water and cold air. The method in which the chilled water drives the first water turbine 14 to rotate and drives the first fan blade to rotate to generate cooling air can reduce the energy consumption of the equipment.

[0056] The first reversing valve group can also be adjusted to control the partial conduction of the first bypass pipeline 18, and control the conduction of the inlet and outlet of the first water turbine 14. At this time, the refrigeration equipment is also in a water circuit conduction state. The chilled water input into the well is used for heat exchange refrigeration. The chilled water enters the heat exchanger 13 from the working medium inlet pipe 17 and exchanges heat with the cooling air flowing through the heat exchange air duct. The chilled water after heat exchange flows into the first water turbine 14 through the inlet of the first water turbine 14, drives the first water turbine 14 to rotate and drives the first fan blade to rotate, drives the cooling air to be discharged from the first air outlet, and fully utilizes the gravitational potential energy of the chilled water to drive the first fan blade to rotate through the first water turbine 14 to generate cooling air flowing through the heat exchange air duct, thereby ensuring the refrigeration effect of using chilled water heat exchange. The first bypass pipeline 18 can share the chilled water flow flowing through the first water turbine 14 when it is partially conducted, thereby adjusting the rotation speed of the first water turbine 14 and the first fan blade, and changing the heat exchange efficiency of the heat exchanger 13.

[0057] The refrigeration equipment can not only realize heat exchange refrigeration by using fluorine refrigerants or other refrigerants by controlling the first reversing valve group to switch the fluorine path, but can also realize heat exchange refrigeration by using chilled water by controlling the first reversing valve group to switch the water path, thereby meeting the refrigeration needs of different scenarios, avoiding the need to replace refrigeration equipment in different operation processes, and improving the convenience and efficiency of underground operations.

[0058] In the above embodiment, the device body mainly includes a device frame 10, a sealing plate 11 installed on the device frame 10, and a water receiving tray 12 installed at the bottom of the device frame 10. The device frame 10 is composed of upper and lower cross beams, longitudinal beams, and four corner columns. The sealing plate 11 and the water receiving tray 12 are connected to the device frame 10 to form a relatively closed installation protection space. The outer shell of the device body reserves an air inlet and a first air outlet, and the interior of the device body forms a heat exchange air duct connecting the air inlet and the first air outlet. In the illustrated embodiment, the device body is in the shape of a rectangular parallelepiped, two groups of heat exchangers 13 are arranged and located on both sides of the device body, two groups of air inlets are arranged, and the two groups of air inlets correspond to the heat exchangers 13 arranged on both sides of the device body, and the first air outlet is arranged at the first end of the length direction of the device body. The first water turbine 14 and the first fan blade are arranged at the first air outlet. The first water turbine 14 is formed by a driving impeller, a bearing, a driving shaft, a pump body, a mechanical shaft seal, a safety valve, etc. to form a drive assembly. The specific structure can refer to the existing water turbine. The first fan blade is installed on the driving shaft of the first water turbine 14, and the first fan blade is driven to rotate by the output power of the driving shaft to form cooling wind flowing through the surface of the heat exchanger 13 to realize forced heat exchange.

[0059] The water receiving pan 12 at the bottom of the equipment frame 10 is provided with a drain port, which is connected to a drain pipe and is provided with a drain valve. The water receiving pan 12 is used to receive the condensed water generated on the surface of the heat exchanger 13. The sealing plate 11 is made of a foam board and is installed on the equipment frame 10. The structure is a double-layer metal plate-like structure filled with thermal insulation polyurethane, etc., which has the function of sealing the internal protection and has the characteristics of flame retardancy, anti-static insulation, etc. The bottom crossbeam of the equipment frame 10 is connected with a lifting lug, which is convenient for lifting and transporting the refrigeration equipment through the lifting lug. The lowest point of the working medium circulation pipeline can also be provided with a drain valve as needed, so as to drain the chilled water in the corresponding pipeline under special working conditions. The heat exchanger 13 preferably adopts a fin-type surface cooling heat exchanger, and the fins are used to increase the heat exchange area and heat exchange efficiency of the cooling air and the internal flowing working medium.

[0060] In some embodiments, Figures 3 to 7 As shown, the working medium inlet pipe 17 is connected to the inlet of the heat exchanger 13, and is used to send the circulating working medium into the heat exchanger 13 and exchange heat with the cooling air flowing through the surface of the heat exchanger 13; the first bypass pipeline 18 and the first turbine 14 are connected in parallel and connected between the outlet of the heat exchanger 13 and the working medium outlet pipe 30, and the first reversing valve group adopts a structure composed of a first control valve 19, a second control valve 20 and a third control valve 21. Among them, the first control valve 19 is connected to the inlet of the first turbine 14, the second control valve 20 is connected to the outlet of the first turbine 14, and the third control valve 21 is connected to the first bypass pipeline 18.

[0061] When it is necessary to switch to the fluorine path conduction, the third control valve 21 is opened, and the first control valve 19 and the second control valve 20 are closed; the fluorine refrigerant is sent to the heat exchanger 13 through the working medium inlet pipe 17 to evaporate and absorb heat, and the fluorine refrigerant after heat exchange with the air on the surface of the heat exchanger 13 is discharged from the first bypass pipeline and the working medium outlet pipe 30. In the fluorine path conduction state, an external blower can be used to supply air to the air inlet as needed to improve the heat exchange efficiency between the heat exchanger 13 and the air in the mine.

[0062] When it is necessary to switch to water conduction, the first control valve 19 and the second control valve 20 are opened, and the third control valve 21 is closed. The chilled water is sent from the ground into the well, and is sent to the heat exchanger 13 through the working medium inlet pipe 17 to exchange heat with the air flowing through the surface of the heat exchanger 13, and then sent to the first turbine 14 from the outlet of the heat exchanger 13 and the inlet of the first turbine 14, driving the first turbine 14 to rotate and then driving the first fan blade to rotate, driving the air to flow from the air inlet into the heat exchange air duct and be discharged from the first air outlet, forming cooling air flowing through the heat exchange air duct and the surface of the heat exchanger 13, and improving the heat exchange efficiency of the heat exchanger 13. In this process, the gravity potential energy of the chilled water sent from the ground into the well is fully utilized to drive the first turbine 14 to rotate, without the need for an external air supply mechanism, thereby reducing the refrigeration energy consumption of the equipment.

[0063] When it is necessary to adjust the rotation speed of the first fan blade to change the cooling air flow, not only the chilled water flow sent to the working medium inlet pipe 17 and the heat exchanger 13 can be adjusted, but also the third control valve 21 can be partially opened, and the opening of the first control valve 19, the second control valve 20 and the third control valve 21 can be adjusted to adjust the chilled water flow sent to the first turbine 14 and change the rotation speed of the first turbine 14 and the first fan blade.

[0064] Based on the above embodiments, Figures 3 to 6 as well as Figure 8 As shown, another embodiment of the present application provides a refrigeration device that also includes a second air outlet, and the second air outlet is arranged at the second end of the length direction of the device body, that is, the first air outlet and the second air outlet are respectively arranged at two opposite ends of the length direction of the device body, and the air inlet is arranged on two opposite sides of the device body.

[0065] The refrigeration equipment also includes a second water turbine 24 and a second fan blade. The second water turbine 24 is arranged at the second air outlet. The second fan blade is connected to the second water turbine 24 and can rotate under the drive of the second water turbine 24 to generate cooling wind flowing from the air inlet to the second air outlet.

[0066] The working medium circulation pipeline also includes an intermediate connecting pipe 22, a second bypass pipe 23 and a second reversing valve group. The intermediate connecting pipe 22 serves to connect the first water turbine 14 and the second water turbine 24, and can deliver the chilled water discharged from the first water turbine 14 to the second water turbine 24 and drive the second water turbine 24 to rotate. Specifically, the second water turbine 24 and the second bypass pipe 23 are connected in parallel and connected between the intermediate connecting pipe 22 and the working medium outlet pipe 30. The second reversing valve group is used to control the second bypass pipe 23 or the second water turbine 24 to connect the intermediate connecting pipe 22 and the working medium outlet pipe 30, so as to discharge the chilled water discharged from the first water turbine 14 from the working medium outlet pipe 30.

[0067] Specifically, the second reversing valve group includes a fourth control valve 27, a fifth control valve 28 and a sixth control valve 29, wherein the fourth control valve 27 is connected to the inlet of the second water turbine 24, the fifth control valve 28 is connected to the outlet of the second water turbine 24, and the sixth control valve 29 is connected to the second bypass pipeline 23. When it is necessary to control the second water turbine 24 to drive the second fan blade to rotate and generate cooling air from the air inlet to the second air outlet, the fourth control valve 27 and the fifth control valve 28 are opened to connect the second water turbine 24 with the intermediate connecting pipe 22 and the working medium outlet pipe 30 respectively, and the chilled water discharged from the outlet of the first water turbine 14 is sent to the second water turbine 24 through the intermediate connecting pipe 22 and the inlet of the second water turbine 24, driving the second water turbine 24 and the second fan blade to rotate, and finally discharged from the outlet of the second water turbine 24 and the working medium outlet pipe 30.

[0068] In this process, the flow rate of chilled water flowing through the second turbine 24 can be changed by closing the sixth control valve 29 or adjusting the opening of the sixth control valve 29, thereby adjusting the rotation speed of the second turbine 24 and the second fan blade, and then adjusting the cooling air flow rate of the second air outlet.

[0069] In the above embodiment, the refrigeration device has multiple operation modes by disposing the first bypass pipeline 18, the second bypass pipeline 23, the first reversing valve group and the second reversing valve group.

[0070] In the fluorine circuit conduction mode: the first control valve 19, the second control valve 20, the fourth control valve 27 and the fifth control valve 28 are all closed to isolate and protect the first turbine 14 and the second turbine 24, the third control valve 21 is opened to connect the first bypass line 18, and the sixth control valve 29 is opened to connect the second bypass line 23. Fluorine refrigerant is sent into the heat exchanger 13 through the working medium inlet pipe 17 to evaporate and absorb heat, and the fluorine refrigerant discharged from the heat exchanger 13 is discharged through the first bypass line 18, the intermediate connection, the second bypass line 23 and the working medium outlet pipe 30 in sequence.

[0071] The waterway conduction modes mainly include the following:

[0072] The first water turbine 14 and the first fan blade rotate, the second water turbine 24 and the second fan blade stop rotating, the cooling air is sent in from the air inlet, and after heat exchange with the heat exchanger 13, it is discharged from the first air outlet. In this mode, the first control valve 19, the second control valve 20 and the sixth control valve 29 are opened, the fourth control valve 27 and the fifth control valve 28 are closed, and the opening of the third control valve 21 can be adjusted as needed. Under the premise that the chilled water flow rate flowing through the heat exchanger 13 remains unchanged, the chilled water flow rate flowing through the first water turbine 14 is changed to adjust the rotation speed of the first water turbine 14 and the first fan blade.

[0073] The first water turbine 14 and the first fan blade stop rotating, the second water turbine 24 and the second fan blade rotate, the cooling air is sent in from the air inlet, and after heat exchange with the heat exchanger 13, it is discharged from the second air outlet. In this mode, the third control valve 21, the fourth control valve 27, and the fifth control valve 28 are opened, the first control valve 19 and the second control valve 20 are closed, and the opening of the sixth control valve 29 can be adjusted as needed. Under the premise that the chilled water flow rate flowing through the heat exchanger 13 remains unchanged, the chilled water flow rate flowing through the second water turbine 24 is changed to adjust the rotation speed of the second water turbine 24 and the second fan blade.

[0074] The first water turbine 14 and the first fan blade rotate, and the second water turbine 24 and the second fan blade also rotate at the same time. The cooling air is sent in from the air inlet, and after heat exchange with the heat exchanger 13, it is discharged from the first air outlet and the second air outlet respectively. In this mode, the first control valve 19, the second control valve 20, the fourth control valve 27 and the fifth control valve 28 are all opened. Under the premise that the flow rate of chilled water flowing through the heat exchanger 13 remains unchanged, the speed of the first water turbine 14 and the first fan blade can be adjusted by changing the opening of the third control valve 21, and the speed of the second water turbine 24 and the second fan blade can also be adjusted by changing the opening of the sixth control valve 29.

[0075] The refrigeration equipment provided in the embodiment of the present application can not only realize the switching and conduction of the fluorine circuit and the water circuit, but also adjust the cooling air flow of the first air supply port and the second air supply port when the water circuit is connected, so as to meet diverse refrigeration needs, avoid replacing the refrigeration equipment in different operation processes, and improve the convenience and efficiency of underground operations.

[0076] In some embodiments, the refrigeration device further includes a first air guide cover 15 and a second air guide cover 25. The first air guide cover 15 is arranged at the periphery of the first fan blade and connected to the first air outlet. The connection between the first air guide cover 15 and the first air outlet is transitioned at a first preset spinning angle, that is, the connection between the first air guide cover 15 and the first end of the device body presents a certain taper. The first preset spinning angle of the first air guide cover 15 is used to collect air, optimize the flow field, and improve the overall heat exchange efficiency. A first mesh cover 16 is provided at one end of the first air outlet of the first air guide cover 15 or the device body, and the first mesh cover 16 plays a certain protective role on the first fan blade.

[0077] The second air guide 25 is arranged at the periphery of the second fan blade and connected to the second air outlet, and the connection between the second air guide 25 and the second air outlet is transitioned at a second preset spinning angle, that is, the connection between the second air guide 25 and the second end of the device body presents a certain taper, and the air is collected by the second preset spinning angle of the second air guide 25, the flow field is optimized, and the overall heat exchange efficiency is improved. A second mesh cover 26 is provided at one end of the second air outlet of the second air guide 25 or the device body, and the second mesh cover 26 plays a certain protective role on the second fan blade.

[0078] The embodiment of the present application also provides a refrigeration system, including multiple groups of refrigeration equipment provided by the above embodiment, and the multiple groups of refrigeration equipment can be arranged in the underground tunnel according to the set spacing, and the multiple groups of refrigeration equipment can realize the input and output of the working fluid through pipeline connection. Specifically, the refrigeration system includes a working fluid inlet main pipe and a working fluid outlet main pipe, each refrigeration equipment is connected to the working fluid inlet main pipe through the working fluid inlet pipe 17, and is connected to the working fluid outlet main pipe through the working fluid outlet pipe 30, that is, multiple refrigeration equipment are connected in parallel between the working fluid inlet main pipe and the working fluid outlet main pipe through their respective working fluid inlet pipes 17 and working fluid outlet pipes 30.

[0079] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0080] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0081] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A refrigeration device, characterized in that: include: The device body is provided with a heat exchange air duct, wherein the heat exchange air duct is provided with an air inlet and a first air outlet; A first water turbine is disposed at the first air outlet; a first fan blade connected to the first water turbine and driven by the first water turbine to rotate, driving cooling air to be discharged from the first air outlet; A heat exchanger is installed in the heat exchange air duct, and the interior of the heat exchanger is used to pass the circulating medium and the cooling air for heat exchange and to cool the cooling air; The working fluid circulation pipeline includes a working fluid inlet pipe, a working fluid outlet pipe, a first bypass pipeline and a first reversing valve group. The heat exchanger and the first water turbine are connected in series between the working fluid inlet pipe and the working fluid outlet pipe. The first bypass pipeline is connected in parallel with the first water turbine. The first reversing valve group is used to control the conduction of the first water turbine and / or control the conduction of the first bypass pipeline.

2. The refrigeration equipment according to claim 1, characterized in that: The working medium inlet pipe is connected to the inlet of the heat exchanger, the first bypass pipeline and the first turbine are connected in parallel between the outlet of the heat exchanger and the working medium outlet pipe, and the first reversing valve group includes: a first control valve, disposed at the inlet of the first turbine; a second control valve, disposed at the outlet of the first water turbine; The third control valve is arranged in the first bypass pipeline.

3. The refrigeration equipment according to claim 1, characterized in that: The heat exchangers are provided in two groups, and the two groups of heat exchangers are symmetrically arranged on both sides of the equipment body, and the first water turbine is arranged at the first end of the equipment body.

4. The refrigeration equipment according to any one of claims 1 to 3, characterized in that: The heat exchange air duct is provided with a second air outlet, and the first air outlet and the second air outlet are located at two ends of the device body; The refrigeration equipment includes a second water turbine and a second fan blade, the second water turbine is arranged at the second air outlet, the second fan blade is connected to the second water turbine and rotates under the drive of the second water turbine to drive cooling air to be discharged from the second air outlet; The working fluid circulation pipeline includes an intermediate connecting pipe, a second bypass pipe and a second reversing valve group. The intermediate connecting pipe is connected between the first water turbine and the second water turbine. The second water turbine and the second bypass pipe are connected in parallel and then connected in series between the intermediate connecting pipe and the working fluid outlet pipe. The second reversing valve group is used to control the conduction of the second water turbine and / or control the conduction of the second bypass pipe.

5. The refrigeration equipment according to claim 4, characterized in that: The second reversing valve group comprises: a fourth control valve, provided at the inlet of the second turbine; a fifth control valve, provided at the outlet of the second hydraulic turbine; The sixth control valve is arranged in the second bypass pipeline.

6. The refrigeration device according to claim 4, characterized in that: The equipment body comprises an equipment frame and a sealing plate installed on the equipment frame, and a water receiving tray is arranged at the bottom of the equipment frame.

7. The refrigeration equipment according to claim 4, characterized in that: A first air guide cover is disposed on the outer periphery of the first air blade, and the first air guide cover is transitionally connected to the first air outlet at a first preset spinning angle; And / or, a second air guide cover is provided on the outer periphery of the second fan blade, and the second air guide cover and the second air outlet are transitionally connected at a second preset spinning angle.

8. The refrigeration device according to claim 7, characterized in that: A first mesh cover is provided at one end of the first air guide cover away from the first air outlet; And / or, one end of the second air guide cover away from the second air outlet is connected to the second mesh cover.

9. A refrigeration system, characterized in that: It comprises a plurality of groups of refrigeration equipment as described in any one of claims 1 to 8.

10. The refrigeration system according to claim 9, characterized in that: It also includes a working fluid inlet main pipe and a working fluid outlet main pipe, and all the refrigeration equipment are connected in parallel between the working fluid inlet main pipe and the working fluid outlet main pipe through the working fluid inlet pipe and the working fluid outlet pipe.

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