A high-efficiency circulating water cooling device for industrial production chillers

Abstract

The present invention provides a high-efficiency circulating water cooling device for an industrial production chiller, relating to the field of industrial water-cooled chillers. The high-efficiency circulating water cooling device for an industrial production chiller comprises a hot water circulation section, a cold water circulation section, and a water-cooled heat exchanger. It also comprises a pre-cooling assembly mounted on the hot water circulation section for pre-cooling the heat exchange liquid. It also comprises a low-pressure filter assembly. When the water inlet pressure of the hot water circulation section is low, the incoming water passes through the low-pressure filter assembly. When the water inlet pressure of the hot water circulation section is high, the incoming water does not pass through the low-pressure filter assembly. The hot water circulation section comprises an inlet pipe and a return pipe, with two conducting pipes disposed between the inlet pipe and the return pipe. The high-efficiency circulating water cooling device for an industrial production chiller can arbitrarily change different machine operating states according to temperature changes in real life. It has a linear temperature reduction change process and no cooling operation window period. Therefore, it is more energy-efficient in different seasons and different environments.

Description

Technical Field

[0001] The present invention relates to the field of industrial water-cooled chillers, in particular to a high-efficiency circulating water cooling device for industrial production chillers. Background Art

[0002] Currently, chillers are mainly divided into air-cooled chillers and water-cooled chillers. According to the refrigeration temperature range, they can be further divided into normal temperature chillers and low temperature chillers. The working principle of a chiller is to inject refrigerant into the water tank inside the refrigeration system. The refrigerant liquid is cooled by the chiller refrigeration system. The water pump then injects the low-temperature refrigerant into the equipment to be cooled. The low-temperature refrigerant removes the heat from the equipment. The high-temperature refrigerant after heat exchange flows back to the refrigeration system for further cooling. This cycle of heat exchange achieves the effect of cooling the equipment.

[0003] Since industrial chillers always perform a single water cooling process in different temperature environments, a large amount of power resources are wasted. Therefore, the industrial chiller described in Chinese patent CN109855386B has two intelligent water cooling modes, which respectively perform two different water cooling processes in high temperature environments and low temperature environments, effectively reducing energy waste. The industrial chiller in the above Chinese patent has the following disadvantages:

[0004] Since the two different water cooling modes of the industrial chiller have a large difference in efficiency for liquid cooling, if the industrial chiller used in the factory is in an environment where the temperature changes frequently and the temperature change is not large, always using the high-efficiency water cooling mode will result in high energy consumption. For example, if the high-efficiency water cooling mode is always used in a normal temperature environment, if the ambient temperature suddenly drops, the machine may simply switch to a low-temperature environment, or switch back and forth between high-temperature and low-temperature environments. This will result in poor cooling effect on the equipment and shorten the machine's operating life. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a high-efficiency circulating water cooling device for an industrial production chiller, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-efficiency circulating water cooling device for an industrial production chiller, comprising a hot water circulation section, a cold water circulation section, and a water-cooled heat exchanger, and also comprising a pre-cooling component installed on the hot water circulation section for pre-cooling the heat exchange liquid, and also comprising a low-pressure filter component. When the water inlet pressure of the hot water circulation section is low, the water inlet passes through the low-pressure filter component. When the water inlet pressure of the hot water circulation section is high, the water inlet does not pass through the low-pressure filter component.

[0007] The hot water circulation section includes an inlet pipe and a return pipe, a conducting pipe is provided between the inlet pipe and the return pipe, the conducting pipe connects the inlet pipe and the return pipe, and is connected to the two by a solenoid valve, and the conducting pipe is located on both sides of the pre-cooling assembly;

[0008] The water-cooled heat exchanger includes two sets of water inlets and water outlets, the water inlet of one set is connected to the water inlet pipe, and the water outlet is connected to the return pipe. Emergency drain valves are installed at positions opposite to the hot liquid inlet and hot liquid outlet on the other side of the water-cooled heat exchanger.

[0009] A high-pressure filter assembly is provided in the water inlet of the water-cooled heat exchanger. The high-pressure filter assembly is a guide pipe. The guide pipe is fixed at the water inlet and water outlet of the water-cooled heat exchanger between the two fins. A circle of semicircular holes is provided on the guide pipe connected to the two plate fins. The semicircular holes of the two guide pipes are combined to form a circular hole when the plate fins are combined. The guide pipe that is not connected to the two plate fins is sealed after the combination.

[0010] Preferably, valves are installed at the outlets opposite to the hot water circulation section of the water-cooled heat exchanger.

[0011] Preferably, the pre-cooling assembly is installed on one end of the water inlet pipe that passes over the conducting pipe. The pre-cooling assembly includes a fin box and a fan group. The upper and lower ends of the fin box are connected to the water inlet pipe by a circulation pipe. A temperature control valve is installed at the connection between the two and the water inlet pipe. When the temperature exceeds a predetermined value, the water passes through the fin box. The fan group is installed on one side of the fin box to take away the heat from the fin box.

[0012] Preferably, the low-pressure filter assembly is installed on one end of the water inlet pipe that passes over the fin box.

[0013] Preferably, the low-pressure filter assembly includes a filter box, a central tube, a disc filter and a return pipe. The central tube and the return pipe are both connected to the water inlet pipe by an electromagnetic valve. The filter box is installed outside the central tube, and the central tube extends to the bottom of the filter box. A drain valve is provided at the bottom of the filter box. Multiple disc filters are provided and distributed along the filter box. The edges thereof are sealed with the inner wall of the filter box and the outer wall of the central tube. The end of the return pipe away from the water inlet pipe is connected to the interior of the upper end of the filter box.

[0014] Preferably, the cold water circulation section includes two groups of heat transfer tubes, which are respectively connected to the water inlet and water outlet of the other group.

[0015] Preferably, the other side of the water-cooled heat exchanger opposite to the cold water circulation section is sealed.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The high-efficiency circulating water cooling device of the industrial production chiller, when the hot water circulation section enters the hot water, if the water temperature does not exceed the preset value, the conduction pipe will be directly opened to allow the water to continue to return for use. If the water temperature rises, the two conduction pipes will be slightly opened, and then the pre-cooling component in the middle will play a role, using air cooling to reduce the temperature. According to the different temperatures at this stage, the opening degree of the solenoid valves in the two conduction pipes can be changed. When the temperature rises again, the first conduction pipe will be closed to allow the pre-cooling component to operate, and the subsequent conduction pipes will perform reflux. At this time, it is in the air-cooled state. If the temperature exceeds the preset value, the water-cooled heat exchanger will be used to achieve water cooling. In the full-power operation mode, the pre-cooling component and the water-cooled heat exchanger will both perform cooling operation. They can arbitrarily change the different machine operation states according to the temperature changes in real life. There is a linear cooling change process, and there is no window period for cooling operation. Therefore, it can achieve better energy-saving effects in different seasons and different environments.

[0018] The high-efficiency circulating water cooling device of the industrial production chiller has a low-pressure filter component that can perform a simple filtration on the water when the inlet pressure is low to prevent crystallization and excessive scaling inside the water-cooled heat exchanger from causing blockage. When the inlet pressure is high, the low-pressure filter component can be omitted. Therefore, filtration can be achieved under normal circumstances. The equipment can operate stably for a long time, has a high safety factor, good energy-saving effect, and can also extend the service life of factory equipment.

[0019] The high-efficiency circulating water cooling device of the industrial production chiller can manually control the emergency drain valve to directly drain the water-cooled heat exchanger when the pressure in the water-cooled heat exchanger is too high due to blockage, avoiding continued danger.

[0020] The high-efficiency circulating water cooling device of the industrial production chiller and the high-pressure filter component inside the water-cooled heat exchanger can further prevent impurities from entering the aluminum fins, thereby greatly improving the heat exchange efficiency. When the manual valve is opened, a flushing effect can also be achieved, resulting in higher heat exchange efficiency and better energy saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of the present invention Figure 1 ;

[0022] Figure 2 Schematic diagram of the structure of the present invention Figure 2 ;

[0023] Figure 3 Schematic diagram of the structure of the present invention Figure 3 ;

[0024] Figure 4 It is a front view of the internal structure of the present invention;

[0025] Figure 5A top view of the internal structure of the present invention;

[0026] Figure 6 This is a structural diagram of the pre-cooling component and the low-pressure filtration component of the present invention;

[0027] Figure 7 Schematic diagram of the internal structure of the low-pressure filter assembly of the present invention;

[0028] Figure 8 It is a partial structural diagram of the present invention;

[0029] Figure 9 This is a structural diagram of the water-cooled heat exchanger of the present invention;

[0030] Figure 10 This is a diagram showing the internal structure of the water-cooled heat exchanger of the present invention;

[0031] Figure 11 For the present invention Figure 10 A magnified view of the structure at point A;

[0032] Figure 12 This is the actual flow direction operation diagram in the present invention.

[0033] In the figure: 1. Hot water circulation section; 101. Water inlet pipe; 102. Return pipe; 103. Conducting pipe; 2. Cold water circulation section; 201. Heat transfer pipe; 3. Water-cooled heat exchanger; 4. Pre-cooling assembly; 401. Fin box; 402. Fan assembly; 403. Circulating pipe; 404. Temperature control valve; 5. Low-pressure filter assembly; 501. Filter box; 502. Center pipe; 503. Disc filter; 504. Return pipe; 6. High-pressure filter assembly; 601. Guide pipe; 602. Semicircular hole; 7. Emergency drain valve. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0038] like Figures 1-9 As shown, a high-efficiency circulating water cooling device for an industrial chiller includes a hot water circulation section 1, a cold water circulation section 2, and a water-cooled heat exchanger 3. It also includes a pre-cooling component 4 installed on the hot water circulation section 1 for pre-cooling the heat exchange liquid. It also includes a low-pressure filter component 5. When the water inlet pressure of the hot water circulation section 1 is low, the water passes through the low-pressure filter component 5. When the water inlet pressure of the hot water circulation section 1 is high, the water does not pass through the low-pressure filter component 5.

[0039] A high-pressure filter assembly 6 is provided in the water-cooled heat exchanger 3 , and valves are installed at the outlets opposite to the hot water circulation section 1 .

[0040] The water-cooled heat exchanger 3 is composed of multiple layers of parallel partitions and fins alternately stacked in the middle. The fins serve as secondary heat transfer surfaces, greatly increasing the heat transfer area. The cold and hot fluids exchange heat through different flow channels. The fins enhance fluid turbulence and improve heat transfer efficiency. The hot water circulation section 1 is used not only for circulating hot water, but also for circulating industrial waste heat such as flue gas.

[0041] Unlike the existing technology, the installed pre-cooling component 4 can achieve a preliminary cooling of the cooling water entering in the early stage. The preliminary cooling can prevent the equipment from not having enough time to conduct heat, resulting in high temperature, or when the equipment has been running for a period of time, the heat exchange efficiency deteriorates and large temperature fluctuations occur. At this time, cooling the medium that enters in advance can avoid subsequent problems such as heavy load on the water-cooled heat exchanger 3. After maintenance by the staff, the component 4 can be temporarily pre-cooled and water cooling can continue to be used to conduct heat.

[0042] The low-pressure filter assembly 5 is also used as an early selection device. During normal use, high-temperature liquid containing impurities can pass through the low-pressure filter assembly 5, thereby avoiding subsequent fin blockage caused by impurities entering the interior. Moreover, when the equipment needs to operate at a large flow rate, it can also be chosen not to pass through the low-pressure filter assembly 5. In this way, when exchanging heat at a large flow rate, the flow upper limit can be avoided. Moreover, the low-pressure filter assembly 5 and the pre-cooling assembly 4 can be used in combination according to actual usage conditions.

[0043] In an optional embodiment, the hot water circulation section 1 includes an inlet pipe 101 and a return pipe 102, and a conducting pipe 103 is provided between the inlet pipe 101 and the return pipe 102. The conducting pipe 103 connects the inlet pipe 101 and the return pipe 102, and is connected to the two by an electromagnetic valve. The conducting pipe 103 is located on both sides of the pre-cooling component 4.

[0044] In this embodiment, temperature sensors and pressure sensors are installed at the connection points of the conducting pipe 103, the water inlet pipe 101 and the return pipe 102. When the water pressure is too high, it is obvious that the water-cooled heat exchanger 3 cannot pass the fluid at a large flow rate. The pressure sensor prompts the solenoid valve to open. At this time, the hot water or heat medium does not pass through the water-cooled heat exchanger 3 and continues to return. In this way, the problem of high pressure inside the water-cooled heat exchanger 3 can be quickly solved in a short time without using a water tank. The conducting pipe 103 is used in conjunction with the low-pressure filter assembly 5. Without using other safety devices, the water tank is not installed in the equipment, which can also further improve safety.

[0045] In an optional embodiment, the precooling component 4 is installed on one end of the water inlet pipe 101 that passes over the conducting pipe 103. The precooling component 4 includes a fin box 401 and a fan group 402. The upper and lower ends of the fin box 401 are connected to the water inlet pipe 101 by a circulation pipe 403. A temperature control valve 404 is installed at the connection between the two and the water inlet pipe 101. When the temperature exceeds a predetermined value, the incoming water passes through the fin box 401. The fan group 402 is installed on one side of the fin box 401 to take away the heat from the fin box 401.

[0046] In this embodiment, the fin box 401 is a hollow heat dissipation fin made of aluminum. There are multiple heat dissipation fins, which are arranged in an array to form a box. The hot water in the water inlet pipe 101 can pass through the fin box 401 and return. After the temperature control valve 404 detects that the temperature exceeds the limit value and full power operation is required, the hot water that has not entered the water-cooled heat exchanger 3 in the early stage will be passed to the fin box 401, and then the fan group 402 will be used to dissipate heat from the fin box 401, thereby reducing the pressure of subsequent heat exchange, especially in summer, when the ability to recover heat is limited. Therefore, air cooling can also be an immediately effective safety device.

[0047] According to the data of the temperature sensor, if the water temperature does not exceed the predetermined value, the conducting pipe 103 will be directly opened to allow the water to continue to be used. If the water temperature rises, the two conducting pipes 103 will be slightly opened, and then the middle pre-cooling component 4 will play a role, using air cooling to reduce the temperature. According to the different temperatures at this stage, the opening degree of the solenoid valves in the two conducting pipes 103 can be changed. If the temperature rises again, the first conducting pipe 103 will be closed to enable the pre-cooling component 4 to operate, and the subsequent conducting pipes 103 will perform a reflux function. At this time, it is in the air-cooled state. In the full-power operation mode, the pre-cooling component 4 and the water-cooled heat exchanger 3 both perform cooling operation.

[0048] In an optional embodiment, the low-pressure filter assembly 5 is installed on one end of the water inlet pipe 101 that passes over the fin box 401 .

[0049] In this embodiment, the fin box 401 is used at full power and when water cooling is not required. It is used frequently. Therefore, most of the time, the low-temperature cooling water is air-cooled through the fin box 401, so its daily flow rate is relatively large. Therefore, there is no need to set the low-pressure filter assembly 5 before the water inlet of the fin box 401. Otherwise, there may be frequent high-temperature alarms due to the reduction in the water inlet rate. However, this operating state requires that the high-temperature cooling water in the early stage has been filtered, especially the coolant for processing metal products, which contains more impurities inside. It must be filtered to a certain extent before the fin box 401 can be used for air cooling.

[0050] In an optional embodiment, the low-pressure filter assembly 5 includes a filter box 501, a central pipe 502, a disc filter 503 and a return pipe 504. The central pipe 502 and the return pipe 504 are both connected to the water inlet pipe 101 by an electromagnetic valve. The filter box 501 is installed outside the central pipe 502, and the central pipe 502 extends to the bottom of the filter box 501. A drain valve is provided at the bottom of the filter box 501. A plurality of disc filters 503 are provided, and are distributed along the upper and lower sides of the filter box 501. The edges thereof are sealed with the inner wall of the filter box 501 and the outer wall of the central pipe 502. The end of the return pipe 504 away from the water inlet pipe 101 is connected to the interior of the upper end of the filter box 501.

[0051] In this embodiment, the disc filter 503 can be a steel wire filter for removing impurities from the liquid. Since the medium is only circulated in the subsequent water-cooled heat exchanger 3 and there is a high-pressure filter assembly 6, there is no need to set up more sophisticated impurity removal components.

[0052] When using the low-pressure filter assembly 5, hot water enters the bottom of the filter box 501 from the central pipe 502 and then passes through the butterfly filter layer by layer, so it can be well filtered. When the solenoid valve is controlled, the low-pressure filter assembly 5 can be omitted, and different solenoid valves can also be used to make the backwash pipe 504 backwash the butterfly filter, which can effectively remove impurities in the cooling water and extend the service life of the factory equipment.

[0053] In an optional embodiment, the water-cooled heat exchanger 3 includes two groups of water inlets and water outlets, wherein the water inlet of one group is connected to the water inlet pipe 101, and the water outlet is connected to the return pipe 102. An emergency drain valve 7 is installed at a position opposite to the hot liquid inlet and the hot liquid outlet on the other side of the water-cooled heat exchanger 3.

[0054] In this embodiment, the emergency drain valve 7 is used in both emergency and non-emergency situations. When the electronic control of the equipment fails, the emergency drain valve 7 can be manually rotated to release the high-pressure hot water inside the water-cooled heat exchanger 3, or the emergency drain valve 7 can be manually opened during regular flushing.

[0055] In an optional embodiment, the high-pressure filter assembly 6 is a guide tube 601, which is fixed at a position between the two fins at the water inlet and the water outlet of the water-cooled heat exchanger 3. A circle of semicircular holes 602 is provided on the guide tube 601 connected to the two plate fins. The semicircular holes 602 of the two guide tubes 601 are combined to form a circular hole in the plate fin combination. The guide tube 601 that is not connected to the two plate fins is sealed after the combination.

[0056] In this embodiment, the semicircular hole 602 serves as a later impurity removal component, which can keep impurities in hot water or other media as much as possible inside the guide tube 601. It is also very convenient for later flushing and does not require pulse cleaning of the inside of the fin.

[0057] In an optional embodiment, the cold water circulation section 2 includes two groups of heat transfer tubes 201, which are respectively connected to the water inlet and the water outlet of another group.

[0058] The cold water circulation section 2 is connected to an external large cold water pool to achieve water cooling, and can also be connected to the refrigerant generated by the screw compressor to perform heat exchange with hot water.

[0059] In an optional embodiment, the other side of the water-cooled heat exchanger 3 opposite to the cold water circulation section 2 is sealed.

[0060] Working principle:

[0061] Normal heat exchange: When the hot water circulation section enters the hot water, if the water temperature does not exceed the predetermined value, the conduction pipe 103 will be directly opened to allow the water to continue to be used. If the water temperature rises, the two conduction pipes 103 will be slightly opened, and then the middle pre-cooling component 4 will play a role, using air cooling to reduce the temperature. According to the different temperatures at this stage, the opening degree of the solenoid valves in the two conduction pipes 103 can be changed. When the temperature rises again, the first conduction pipe 103 will be closed to allow the pre-cooling component 4 to operate, and the subsequent conduction pipes 103 will perform a reflux effect. At this time, it is in an air-cooled state. If the temperature exceeds the predetermined value, the water-cooled heat exchanger 3 will be used to achieve water cooling. In the full-power operation mode, the pre-cooling component 4 and the water-cooled heat exchanger 3 will both perform cooling operation, and can arbitrarily change different machine operation states according to temperature changes in real life.

[0062] If there are metal debris, inorganic salts, etc. inside the incoming hot water, it will pass through the high-pressure filter assembly 6 when entering the water-cooled heat exchanger 3, and then be blocked by the semicircular hole 602 on the guide pipe 601. As the equipment operates, the particles in the hot water are not easy to enter the inside of the fins, so that the heat exchange efficiency can always be maintained high during long-term use. Regularly opening the emergency drain valve 7 can flush the inside of the guide pipe 601.

[0063] Emergency: Control the solenoid valve to open, and the conducting pipe 103 connects the water inlet pipe 101 and the return pipe 102. At this time, the high-pressure hot water continues to return from the conducting pipe 103 to the return pipe 102 without passing through the water-cooled heat exchanger 3.

[0064] Under full power operation: When hot water passes through the pre-cooling component 4, if the inlet and return water temperatures exceed the preset values ​​due to low heat exchange efficiency, the pre-cooling component 4 also starts to operate at full power, thereby cooling the hot water to be exchanged in advance.

[0065] Electronic control failure: When the pressure in the water-cooled heat exchanger 3 is too high due to blockage, the emergency drain valve 7 can be manually controlled to directly drain the water-cooled heat exchanger 3 to avoid continued danger.

[0066] When receiving hot water with a lot of impurities on a daily basis, the low-pressure filter component 5 can perform a simple filtration on it when the water inlet pressure is low to prevent the problem of crystallization and excessive scaling inside the water-cooled heat exchanger 3 causing blockage. When the water inlet pressure is high, the low-pressure filter component 5 can be omitted for filtration. Therefore, filtration can be achieved under normal circumstances, and the equipment can operate smoothly for a long time.

[0067] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0068] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0069] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency circulating water cooling device for an industrial chiller, comprising a heat dissipation housing, a hot water circulation section (1), a cold water circulation section (2) and a water-cooled heat exchanger (3), characterized in that: It also includes a pre-cooling component (4) installed on the hot water circulation section (1) for cooling the heat exchange liquid in advance, and a low-pressure filter component (5). When the water inlet pressure of the hot water circulation section (1) is low, the water passes through the low-pressure filter component (5). When the water inlet pressure of the hot water circulation section (1) is high, the water does not pass through the low-pressure filter component (5). The hot water circulation section (1) comprises a water inlet pipe (101) and a water return pipe (102), two conducting pipes (103) are provided between the water inlet pipe (101) and the water return pipe (102), the conducting pipes (103) are connected to the water inlet pipe (101) and the water return pipe (102), and are communicated with the two by using a solenoid valve, and the conducting pipes (103) are respectively located on both sides of the pre-cooling component (4); The water-cooled heat exchanger (3) comprises two groups of water inlets and water outlets, wherein the water inlet of one group is connected to the water inlet pipe (101), and the water outlet is connected to the return pipe (102); an emergency drain valve (7) is installed at a position opposite to the hot liquid inlet and the hot liquid outlet on the other side of the water-cooled heat exchanger (3); A high-pressure filter assembly (6) is provided in the water inlet of the water-cooled heat exchanger (3), and the high-pressure filter assembly (6) is a guide pipe (601). The guide pipe (601) is fixed at a position between the water inlet and the water outlet of the water-cooled heat exchanger (3) and between the two fins. A circle of semicircular holes (602) is provided on the guide pipe (601) that is connected to the two plate fins. The semicircular holes (602) of the two guide pipes (601) are formed into a circular hole when the plate fins are combined. The guide pipe (601) that is not connected to the two plate fins is sealed after the combination.

2. The high-efficiency circulating water cooling device for industrial production chillers according to claim 1 is characterized in that: The outlets of the water-cooled heat exchanger (3) and the hot water circulation section (1) opposite to each other are both equipped with valves.

3. The high-efficiency circulating water cooling device for industrial production chillers according to claim 2, characterized in that: The precooling assembly (4) is installed on one end of the water inlet pipe (101) that passes over the conducting pipe (103). The precooling assembly (4) includes a fin box (401) and a fan group (402). The upper and lower ends of the fin box (401) are connected to the water inlet pipe (101) using a circulation pipe (403). A temperature control valve (404) is installed at the connection between the two and the water inlet pipe (101). When the temperature exceeds a predetermined value, the water flows through the fin box (401). The fan group (402) is installed on one side of the fin box (401) to remove the heat of the fin box (401).

4. The high-efficiency circulating water cooling device for industrial production chillers according to claim 3 is characterized in that: The low-pressure filter assembly (5) is installed on one end of the water inlet pipe (101) that passes over the fin box (401).

5. The high-efficiency circulating water cooling device for industrial production chillers according to claim 4, characterized in that: The low-pressure filter assembly (5) comprises a filter box (501), a central tube (502), a disc filter (503) and a return pipe (504). The central tube (502) and the return pipe (504) are both connected to the water inlet pipe (101) by a solenoid valve. The filter box (501) is installed outside the central tube (502). The central tube (502) extends to the bottom of the filter box (501). A drain valve is provided at the bottom of the filter box (501). A plurality of disc filters (503) are provided and distributed along the filter box (501) from top to bottom. The edges of the disc filters (503) are sealed with the inner wall of the filter box (501) and the outer wall of the central tube (502). The end of the return pipe (504) away from the water inlet pipe (101) is connected to the interior of the upper end of the filter box (501).

6. The high-efficiency circulating water cooling device for industrial production chillers according to claim 5, characterized in that: The cold water circulation section (2) comprises two groups of heat transfer tubes (201), which are respectively connected to the water inlet and the water outlet of the other group.

7. The high-efficiency circulating water cooling device for industrial production chillers according to claim 6, characterized in that: The other side of the water-cooled heat exchanger (3) and the position opposite to the cold water circulation section (2) are both sealed.

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