Water mixing and cooling system

Abstract

The utility model provides a mixed water cooling water system, which is characterized in that the input end of an evaporator of each water chilling unit is connected with the output end of a backwater variable-frequency water pump group through a first chilled water return pipe, and the input end of the backwater variable-frequency water pump group is connected with the chilled water output end of an external air-conditioning system through the first chilled water return pipe; the side edge of the first chilled water return pipe is connected with the output end of the process equipment PCW through a first cooling water return pipe, a first water mixing pipe is arranged between the first cooling water return pipe and the second cooling water supply pipe, and a first butterfly valve and a first check valve are sequentially arranged on the first water mixing pipe from left to right. Cooling heat exchange of an existing plate heat exchanger is replaced, and production cost is reduced; chilled water and cooling water can be provided at the same time, and the water supply range is widened; a first electric valve, a second electric valve, a temperature sensor and a differential pressure sensor are arranged, flexible adjustment can be achieved, and energy consumption is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling water systems, and more specifically to a mixed water cooling water system. Background Art

[0002] The process cooling water system is an indirect cooling device used for key equipment in the semiconductor, microelectronics and other industries.

[0003] The cooling water system in the prior art that is closest to the present application is the one with announcement number: CN212130799U, a compressed air system for a battery workshop. The utility model proposes a compressed air system for a battery workshop, which includes: a cooling tower system 1, a cooling water pump group 2, a cooling water protection plate heat exchange system 3, a heat recovery water pump group 4, an air compressor heat recovery system 5, an air compressor group 10, a first air storage tank group 12, a drying group 14 and a second air storage tank group 16. The air compressor heat recovery system 5 is arranged.

[0004] The cooling water system uses a plate heat exchanger for heat exchange cooling, which has high cooling costs and high energy consumption, and cannot meet the production needs of low cost and low energy consumption.

[0005] In view of this, the utility model proposes a mixed water cooling water system with low energy consumption and low head. Utility Model Content

[0006] The utility model aims to provide a mixed water cooling water system with low energy consumption and flexible adjustment.

[0007] A mixed water cooling water system, comprising a chiller 1, a return water variable frequency water pump group 2, a mixed water variable frequency water pump group 3, and a control console, characterized in that: there are multiple chillers 1, and the multiple chillers 1 are arranged in parallel, the evaporator output end of each chiller 1 is connected to the chilled water input end of the external air conditioning system through a first chilled water supply pipe 4, the side of the first chilled water supply pipe 4 is connected to the input end of the mixed water variable frequency water pump group 3 through a first cooling water supply pipe 5, the output end of the mixed water variable frequency water pump group 3 is connected to the PCW input end of the process equipment through a second cooling water supply pipe 6, and the evaporator of each chiller 1 is connected to the PCW input end of the process equipment through a second cooling water supply pipe 6. The input end of the transmitter is connected to the output end of the return water variable frequency water pump group 2 through the first chilled water return pipe, the input end of the return water variable frequency water pump group 2 is connected to the chilled water output end of the external air-conditioning system through the first chilled water return pipe 7, the side of the first chilled water return pipe 7 is connected to the output end of the process equipment PCW through the first cooling water return pipe 8, a first mixing water pipe 9 is arranged between the first cooling water return pipe 8 and the second cooling water supply pipe 6, the first mixing water pipe 9 is provided with a first butterfly valve 91 and a first check valve 92 from left to right, the return water variable frequency water pump group 2, the mixing water variable frequency water pump group 3 are electrically connected to the control console.

[0008] Furthermore, the first cooling water return pipe 8 is provided with a second butterfly valve 81, a first hydraulic balancing valve 82, a first electric valve 83, a third butterfly valve 84, a first thermometer 85, and a first pressure gauge 86 from top to bottom. The second butterfly valve 81 and the third butterfly valve 84 are used to control the opening and closing of the pipeline. The first hydraulic balancing valve 82 is used to eliminate the flow deviation caused by the residual pressure head and pressure fluctuation of the pipeline. The first electric valve 83 is used to control the flow in the pipeline. The first thermometer 85 is used to feedback the cooling water return temperature. The first pressure gauge 86 is used to feedback the pipeline pressure in the first cooling water return pipe 8.

[0009] In some embodiments, a temperature sensor 61 is further provided on the second cooling water supply pipe 6 near the PCW input end of the process equipment, and the temperature sensor 61 is used to monitor the temperature of the mixed water supply.

[0010] In some embodiments, the first cooling water supply pipe 5 is provided with a fourth butterfly valve 51, a first Y-type filter 52, and a fifth butterfly valve 53 from top to bottom near the input end of the mixing water variable frequency water pump group 3. The fourth butterfly valve 51 and the fifth butterfly valve 53 are used to control the opening and closing of the pipeline, and the first Y-type filter 52 is used to filter water.

[0011] In some embodiments, there are two groups of mixing water variable frequency water pump groups 3, one group is a use group, and the other group is a standby group. The mixing water variable frequency water pump group 3 includes a second thermometer 31, a sixth butterfly valve 32, a second pressure gauge 33, a first return water variable frequency water pump 34, a third pressure gauge 35, a second check valve 36, and a seventh butterfly valve 37. The second thermometer 31 is used to feedback the temperature at the front end of the mixing water variable frequency water pump input, the second pressure gauge 33 is used to feedback the pressure at the front end of the mixing water variable frequency water pump input, the third pressure gauge 35 is used to feedback the pressure at the rear end of the mixing water variable frequency water pump output, the sixth butterfly valve 32 and the seventh butterfly valve 37 are used to control the opening and closing of the pipeline, and the second check valve 36 is used to prevent water backflow.

[0012] In some embodiments, a bypass pipe 10 is further provided between the second cooling water supply pipe 6 and the first cooling water return pipe 8. The bypass pipe 10 is provided with an eighth butterfly valve 101, a second electric valve 102, and a ninth butterfly valve 103 from top to bottom. The eighth butterfly valve 101 and the ninth butterfly valve 103 are used to control the opening and closing of the pipeline. The second electric valve 102 is used to control the pipeline flow. A pressure differential sensor 104 is provided on the side of the bypass pipe 10. One end of the pressure differential sensor 104 is connected to the second cooling water supply pipe 6, and the pressure differential sensor 104 is connected to the first cooling water return pipe 8.

[0013] In some embodiments, the first electric valve 83, the second electric valve 102, the temperature sensor 61, and the pressure difference sensor 104 are electrically connected to the control console. When the temperature sensor 61 detects that the water supply temperature is high or low, the opening of the first electric valve 83 is adjusted to adjust the water temperature. When the pressure difference sensor 104 detects that the water consumption at the end of the water supply is small, the second electric valve 102 is adjusted to return water through the bypass pipe 10 instead of entering the PCW water supply end of the process equipment.

[0014] In some embodiments, a bag filter 11 is further provided on the second cooling water supply pipe 6 near the PCW input end of the process equipment. The bag filter 11 is used to filter the output mixed cooling water. The filtering accuracy of the bag filter 11 is 50 μm.

[0015] In some embodiments, the first chilled water return pipe 7 is further provided with a dosing device 12 for adding drugs to disinfect the return water.

[0016] In some embodiments, the first chilled water return pipe 7 is further provided with a constant pressure water replenishment device 13 for replenishing RO water in the system.

[0017] Beneficial effects of the utility model: The utility model proposes a mixed water cooling water system, wherein there are multiple chillers 1, and the multiple chillers 1 are arranged in parallel. The evaporator output end of each chiller 1 is connected to the chilled water input end of the external air-conditioning system through the first chilled water supply pipe 4, the side of the first chilled water supply pipe 4 is connected to the input end of the mixed water variable frequency water pump group 3 through the first cooling water supply pipe 5, the output end of the mixed water variable frequency water pump group 3 is connected to the input end of the process equipment PCW through the second cooling water supply pipe 6, the evaporator input end of each chiller 1 is connected to the output end of the return water variable frequency water pump group 2 through the first chilled water return pipe, and the input end of the return water variable frequency water pump group 2 is connected to the output end of the return water variable frequency water pump group 2 through the first chilled water return pipe 7 is connected to the chilled water output end of the external air-conditioning system, and the side of the first chilled water return pipe 7 is connected to the PCW output end of the process equipment through the first cooling water return pipe 8. A first mixing water pipe 9 is arranged between the first cooling water return pipe 8 and the second cooling water supply pipe 6. The first mixing water pipe 9 is provided with a first butterfly valve 91 and a first check valve 92 from left to right. The chilled water and the cooling water are mixed for cooling, replacing the existing plate heat exchanger for cooling and heat exchange, thereby reducing the production cost; chilled water and cooling water can be provided at the same time, thereby increasing the water supply range; a first electric valve 83, a second electric valve 102, a temperature sensor 61, and a pressure difference sensor 104 are arranged, which can be flexibly adjusted to further reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a mixed water cooling water system of the present application.

[0019] Figure 2This is a partially enlarged schematic diagram of a mixed water variable frequency water pump group of a mixed water cooling water system of the present application.

[0020] Figure 3 It is a partially enlarged schematic diagram of a first cooling water supply pipe, a first cooling water return pipe, and a first mixing water pipe of a mixed water cooling water system of the present application.

[0021] Figure 4 It is a partially enlarged schematic diagram of a second cooling water supply pipe and a bypass pipe of a mixed water cooling water system of the present application.

[0022] Main component symbols

[0023] Chiller 1, return water variable frequency water pump group 2, mixing water variable frequency water pump group 3, second thermometer 31, sixth butterfly valve 32, second pressure gauge 33, first return water variable frequency water pump 34, third pressure gauge 35, second check valve 36, seventh butterfly valve 37, first chilled water supply pipe 4, first cooling water supply pipe 5, fourth butterfly valve 51, first Y-type filter 52, fifth butterfly valve 53, fifth butterfly valve 6, temperature sensor 61, first chilled water return pipe 7, first cooling water return pipe 8, second butterfly valve 81, first hydraulic balancing valve 82, first electric valve 83, third butterfly valve 84, first thermometer 85, first pressure gauge 86, first mixing water pipe 9, first butterfly valve 91, first check valve 92, bypass pipe 10, eighth butterfly valve 101, second electric valve 102, ninth butterfly valve 103, differential pressure sensor 104, bag filter 11, dosing device 12, constant pressure water replenishment device 13.

[0024] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0025] The following examples are described to assist the understanding of the present application, and the examples are not and should not be interpreted in any way as limiting the scope of protection of the present application.

[0026] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as separate functional units (which may include sub-units), but those skilled in the art will recognize that various components or portions thereof may be divided into separate components or may be integrated together (including within a single system or component).

[0027] At the same time, the connections between components or systems are not intended to be limited to direct connections, rather, the data between these components may be modified, reformatted, or otherwise changed by intermediate components. In addition, additional or fewer connections may be used. It should also be noted that the terms "coupled," "connected," or "input" should be understood to include direct connections, indirect connections through one or more intermediate devices, and wireless connections. Embodiment 1:

[0028] like Figure 1 As shown, it is a structural schematic diagram of a mixed water cooling water system of the present application; Figure 2 As shown, it is a partial enlarged schematic diagram of a mixed water variable frequency water pump group of a mixed water cooling water system of the present application; Figure 3 As shown, it is a partially enlarged schematic diagram of a first cooling water supply pipe, a first cooling water return pipe, and a first mixing water pipe of a mixed water cooling water system of the present application; Figure 4 FIG. 1 is a partial enlarged schematic diagram of a second cooling water supply pipe and a bypass pipe of a mixed water cooling water system of the present application.

[0029] A mixed water cooling water system, comprising a chiller 1, a return water variable frequency water pump group 2, a mixed water variable frequency water pump group 3, and a control console, characterized in that: there are multiple chillers 1, and the multiple chillers 1 are arranged in parallel, the evaporator output end of each chiller 1 is connected to the chilled water input end of the external air conditioning system through a first chilled water supply pipe 4, the side of the first chilled water supply pipe 4 is connected to the input end of the mixed water variable frequency water pump group 3 through a first cooling water supply pipe 5, the output end of the mixed water variable frequency water pump group 3 is connected to the PCW input end of the process equipment through a second cooling water supply pipe 6, and the evaporator of each chiller 1 is connected to the PCW input end of the process equipment through a second cooling water supply pipe 6. The input end of the transmitter is connected to the output end of the return water variable frequency water pump group 2 through the first chilled water return pipe, the input end of the return water variable frequency water pump group 2 is connected to the chilled water output end of the external air-conditioning system through the first chilled water return pipe 7, the side of the first chilled water return pipe 7 is connected to the output end of the process equipment PCW through the first cooling water return pipe 8, a first mixing water pipe 9 is arranged between the first cooling water return pipe 8 and the second cooling water supply pipe 6, the first mixing water pipe 9 is provided with a first butterfly valve 91 and a first check valve 92 from left to right, the return water variable frequency water pump group 2, the mixing water variable frequency water pump group 3 are electrically connected to the control console.

[0030] The first cooling water return pipe 8 is provided with a second butterfly valve 81, a first hydraulic balancing valve 82, a first electric valve 83, a third butterfly valve 84, a first thermometer 85, and a first pressure gauge 86 from top to bottom. The second butterfly valve 81 and the third butterfly valve 84 are used to control the opening and closing of the pipeline. The first hydraulic balancing valve 82 is used to eliminate the flow deviation caused by the residual pressure head and pressure fluctuation of the pipeline. The first electric valve 83 is used to control the flow in the pipeline. The first thermometer 85 is used to feedback the cooling water return temperature. The first pressure gauge 86 is used to feedback the pipeline pressure in the first cooling water return pipe 8.

[0031] A temperature sensor 61 is also provided on the second cooling water supply pipe 6 near the input end of the process equipment PCW. The temperature sensor 61 is used to monitor the temperature of the mixed water supply.

[0032] The first cooling water supply pipe 5 is provided with a fourth butterfly valve 51, a first Y-type filter 52, and a fifth butterfly valve 53 from top to bottom near the input end of the mixing water variable frequency water pump group 3. The fourth butterfly valve 51 and the fifth butterfly valve 53 are used to control the opening and closing of the pipeline, and the first Y-type filter 52 is used to filter water.

[0033] There are two groups of mixing water variable frequency water pump groups 3, one group is a use group, and the other group is a standby group. The mixing water variable frequency water pump group 3 includes a second thermometer 31, a sixth butterfly valve 32, a second pressure gauge 33, a first return water variable frequency water pump 34, a third pressure gauge 35, a second check valve 36, and a seventh butterfly valve 37. The second thermometer 31 is used to feedback the temperature at the front end of the mixing water variable frequency water pump input, the second pressure gauge 33 is used to feedback the pressure at the front end of the mixing water variable frequency water pump input, the third pressure gauge 35 is used to feedback the pressure at the rear end of the mixing water variable frequency water pump output, the sixth butterfly valve 32 and the seventh butterfly valve 37 are used to control the opening and closing of the pipeline, and the second check valve 36 is used to prevent water backflow.

[0034] A bypass pipe 10 is also provided between the second cooling water supply pipe 6 and the first cooling water return pipe 8. The bypass pipe 10 is provided with an eighth butterfly valve 101, a second electric valve 102, and a ninth butterfly valve 103 from top to bottom. The eighth butterfly valve 101 and the ninth butterfly valve 103 are used to control the opening and closing of the pipeline. The second electric valve 102 is used to control the pipeline flow. A pressure differential sensor 104 is provided on the side of the bypass pipe 10. One end of the pressure differential sensor 104 is connected to the second cooling water supply pipe 6, and the pressure differential sensor 104 is connected to the first cooling water return pipe 8.

[0035] The first electric valve 83, the second electric valve 102, the temperature sensor 61, and the pressure difference sensor 104 are electrically connected to the control console. When the temperature sensor 61 detects that the water supply temperature is high or low, the opening of the first electric valve 83 is adjusted to adjust the water temperature. When the pressure difference sensor 104 detects that the water consumption at the end of the water supply is small, the second electric valve 102 is adjusted to return water through the bypass pipe 10 without entering the PCW water supply end of the process equipment.

[0036] A bag filter 11 is also provided on the second cooling water supply pipe 6 near the input end of the process equipment PCW. The bag filter 11 is used to filter the output mixed cooling water. The filtering accuracy of the bag filter 11 is 50 μm.

[0037] The first chilled water return pipe 7 is also provided with a dosing device 12 for adding drugs to disinfect the return water.

[0038] The first chilled water return pipe 7 is also provided with a constant pressure water replenishing device 13 for replenishing RO water in the system.

[0039] Beneficial effects of the utility model: The utility model proposes a mixed water cooling water system, wherein there are multiple chillers 1, and the multiple chillers 1 are arranged in parallel. The evaporator output end of each chiller 1 is connected to the chilled water input end of the external air-conditioning system through the first chilled water supply pipe 4, the side of the first chilled water supply pipe 4 is connected to the input end of the mixed water variable frequency water pump group 3 through the first cooling water supply pipe 5, the output end of the mixed water variable frequency water pump group 3 is connected to the input end of the process equipment PCW through the second cooling water supply pipe 6, the evaporator input end of each chiller 1 is connected to the output end of the return water variable frequency water pump group 2 through the first chilled water return pipe, and the input end of the return water variable frequency water pump group 2 is connected to the output end of the return water variable frequency water pump group 2 through the first chilled water return pipe 7 is connected to the chilled water output end of the external air-conditioning system, and the side of the first chilled water return pipe 7 is connected to the PCW output end of the process equipment through the first cooling water return pipe 8. A first mixing water pipe 9 is arranged between the first cooling water return pipe 8 and the second cooling water supply pipe 6. The first mixing water pipe 9 is provided with a first butterfly valve 91 and a first check valve 92 from left to right. The chilled water and the cooling water are mixed for cooling, replacing the existing plate heat exchanger for cooling and heat exchange, thereby reducing the production cost; chilled water and cooling water can be provided at the same time, thereby increasing the water supply range; a first electric valve 83, a second electric valve 102, a temperature sensor 61, and a pressure difference sensor 104 are arranged, which can be flexibly adjusted to further reduce energy consumption.

[0040] Although the present application has disclosed multiple aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art, and several modifications and improvements may be made without departing from the concept of the present application, all of which belong to the protection scope of the present application. The multiple aspects and embodiments disclosed in the present application are only for illustration and are not intended to limit the present application. The actual protection scope of the present application shall be subject to the claims.

Claims

1. A mixed water cooling water system, comprising a chiller (1), a return water variable frequency water pump group (2), a mixed water variable frequency water pump group (3), and a control console, characterized in that: There are multiple chillers (1), and the multiple chillers (1) are arranged in parallel. The evaporator output end of each chiller (1) is connected to the chilled water input end of the external air conditioning system through a first chilled water supply pipe (4), the side of the first chilled water supply pipe (4) is connected to the input end of the mixed water variable frequency water pump group (3) through a first cooling water supply pipe (5), the output end of the mixed water variable frequency water pump group (3) is connected to the PCW input end of the process equipment through a second cooling water supply pipe (6), and the evaporator input end of each chiller (1) is connected to the return water variable frequency water pump group (2) through a first chilled water return pipe. The output end is connected, the input end of the return water variable frequency water pump group (2) is connected to the chilled water output end of the external air conditioning system through a first chilled water return pipe (7), the side of the first chilled water return pipe (7) is connected to the PCW output end of the process equipment through a first cooling water return pipe (8), a first mixing water pipe (9) is provided between the first cooling water return pipe (8) and the second cooling water supply pipe (6), a first butterfly valve (91) and a first check valve (92) are provided on the first mixing water pipe (9) from left to right, and the return water variable frequency water pump group (2) and the mixing water variable frequency water pump group (3) are electrically connected to the control console.

2. The mixed water cooling water system according to claim 1, characterized in that: The first cooling water return pipe (8) is provided with a second butterfly valve (81), a first hydraulic balancing valve (82), a first electric valve (83), a third butterfly valve (84), a first thermometer (85), and a first pressure gauge (86) from top to bottom. The second butterfly valve (81) and the third butterfly valve (84) are used to control the opening and closing of the pipe. The first hydraulic balancing valve (82) is used to eliminate the flow deviation caused by the residual pressure head and pressure fluctuation of the pipeline. The first electric valve (83) is used to control the flow in the pipe. The first thermometer (85) is used to feedback the cooling water return temperature. The first pressure gauge (86) is used to feedback the pipe pressure in the first cooling water return pipe (8).

3. The mixed water cooling water system according to claim 1, characterized in that: A temperature sensor (61) is also provided on the second cooling water supply pipe (6) near the PCW input end of the process equipment. The temperature sensor (61) is used to monitor the temperature of the mixed water supply.

4. The mixed water cooling water system according to claim 1, characterized in that: A fourth butterfly valve (51), a first Y-type filter (52), and a fifth butterfly valve (53) are provided in sequence from top to bottom on the first cooling water supply pipe (5) near the input end of the water mixing variable frequency water pump group (3); the fourth butterfly valve (51) and the fifth butterfly valve (53) are used to control the opening and closing of the pipe, and the first Y-type filter (52) is used to filter water.

5. The mixed water cooling water system according to claim 1, characterized in that: There are two groups of variable frequency water mixing pump groups (3), one group is a use group, and the other group is a standby group. The variable frequency water mixing pump group (3) comprises a second thermometer (31), a sixth butterfly valve (32), a second pressure gauge (33), a first return water variable frequency water pump (34), a third pressure gauge (35), a second check valve (36), and a seventh butterfly valve (37). The second thermometer (31) is used to feedback the temperature at the front end of the input of the variable frequency water mixing pump, the second pressure gauge (33) is used to feedback the pressure at the front end of the input of the variable frequency water mixing pump, the third pressure gauge (35) is used to feedback the pressure at the rear end of the output of the variable frequency water mixing pump, the sixth butterfly valve (32) and the seventh butterfly valve (37) are used to control the opening and closing of the pipeline, and the second check valve (36) is used to prevent water backflow.

6. The mixed water cooling water system according to claim 1, characterized in that: A bypass pipe (10) is also provided between the second cooling water supply pipe (6) and the first cooling water return pipe (8). The bypass pipe (10) is provided with an eighth butterfly valve (101), a second electric valve (102), and a ninth butterfly valve (103) from top to bottom. The eighth butterfly valve (101) and the ninth butterfly valve (103) are used to control the opening and closing of the pipe, and the second electric valve (102) is used to control the flow rate of the pipe. A pressure differential sensor (104) is provided on the side of the bypass pipe (10). One end of the pressure differential sensor (104) is connected to the second cooling water supply pipe (6), and the pressure differential sensor (104) is connected to the first cooling water return pipe (8).

7. The mixed water cooling water system according to claim 1, characterized in that: The first electric valve (83), the second electric valve (102), the temperature sensor (61), and the differential pressure sensor (104) are electrically connected to the control console.

8. The mixed water cooling water system according to claim 1, characterized in that: A bag filter (11) is also provided on the second cooling water supply pipe (6) near the PCW input end of the process equipment. The bag filter (11) is used to filter the output mixed cooling water. The filtering accuracy of the bag filter (11) is 50 μm.

9. The mixed water cooling water system according to claim 1, characterized in that: The first chilled water return pipe (7) is also provided with a dosing device (12) for adding drugs to disinfect the return water.

10. The mixed water cooling water system according to claim 1, characterized in that: The first chilled water return pipe (7) is also provided with a constant pressure water replenishment device (13) for replenishing RO water in the system.

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