Cooling water recovery system

Abstract

The utility model relates to the technical field of cooling, in particular to a cooling water recovery system, which comprises a water supply unit, a cooling water circulation water tank, a cooling water circulation water tank and a cooling water circulation water tank, the output end of the water supply unit is connected with the input end of the cooling water circulating tank through a pipeline a; the cooling water pump set is used for providing power for circulation of cooling water, the output end of the cooling water pump set is connected with the input end of the working pump through a pipeline b, the output end of the water supply unit is connected with the pipeline b through a pipeline d, and the output end of the working pump is connected with the input end of the cooling water circulation tank. A circulation loop is formed by the cooling water circulation tank, the cold water pump set and the working pump, so that cooling water can be recycled; the water supply unit is connected with the pipeline b, so that water supply pressure is provided for cooling water in the pipeline b, and continuous output of the cooling water is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling, in particular to a cooling water recovery system. Background Art

[0002] When the temperature of the medium transported by the pump is high, the pump body, bearings, seal chamber and other parts will absorb and accumulate a lot of heat, causing the temperature to rise. Therefore, cooling is an important maintenance measure to ensure that the pump maintains a suitable temperature during operation to prevent performance degradation, damage or even failure due to overheating. During the cooling process, the cooling water that passes through the pump will be directly discharged into the sewage collection tank, causing a waste of water resources and sewage treatment costs. In addition, during use, if the cooling water pump is damaged, the pressure in the pipe connected to its output end will drop, causing the cooling water terminal to burn the mechanical seals of other equipment, causing equipment damage and increasing maintenance costs. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to overcome the problem in the prior art that cooling water passing through a pump is directly discharged into a sewage collection tank, causing waste of water resources and sewage treatment costs, and during use, the cooling water pump is damaged, causing the pressure in the pipeline connected to its output end to drop, a cooling water recovery system is provided.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a cooling water recovery system, comprising:

[0005] A water supply unit, which is used to replenish water for the cooling water circulation tank and to provide water pressure for the recovery system;

[0006] A cooling water circulation tank, which is used to store cooling water, and the output end of the water supply unit and the input end of the cooling water circulation tank are connected through a pipeline a;

[0007] A cooling water pump unit is used to provide power for the circulation of cooling water. The output end of the cooling water pump unit and the input end of the working pump are connected via a pipe b, the input end of the cooling water pump unit and the output end of the cooling water circulation tank are connected via a pipe c, the output end of the water supply unit and the pipe b are connected via a pipe d, the output end of the working pump is connected to the input end of the cooling water circulation tank, and a circulation loop is formed by the cooling water circulation tank, the cooling water pump unit, and the working pump, so that the cooling water can be recycled, thereby reducing the waste of water resources;

[0008] By connecting the water supply unit and pipe b, water pressure is provided for the cooling water in pipe b, thereby ensuring the continuous output of cooling water and avoiding cooling water interruption, so that the equipment can operate normally.

[0009] It further includes a first control valve arranged between the water supply unit and the cooling water circulation tank, and the first control valve is located on the pipeline a.

[0010] It further comprises a second control valve between the output end of the water supply unit and the pipeline b, and the second control valve is located on the pipeline d.

[0011] In order to solve the problem in the cooling water circulation tank, the cooling water circulation tank and the pipeline b are further connected through a return pipe.

[0012] The invention further comprises a third control valve arranged on the return pipe.

[0013] In order to solve the problem of rising cooling water temperature, the cooling water recovery system further includes a heat exchange unit, the input end of the heat exchange unit is connected to the output end of the working pump, the output end of the heat exchange unit is connected to the input end of the cooling water circulation tank, and the heat exchange unit is used to adjust the cooling water temperature.

[0014] It further comprises a check valve installed on the output end of the cooling water pump group.

[0015] In order to solve the problem of impurities in the cooling water, a pipeline filter is further installed on the output end of the cooling water pump group.

[0016] It further comprises a PH / conductivity online detection instrument installed between the output end of the heat exchange unit and the input end of the cooling water circulation tank.

[0017] It further comprises a temperature online detection instrument installed between the output end of the heat exchange unit and the input end of the cooling water circulation tank, and a fourth control valve is arranged at the circulating cooling water output end of the heat exchange unit.

[0018] The beneficial effects of the utility model are as follows: the cooling water recovery system provided by the utility model forms a circulation loop through the cooling water circulation tank, the cold water pump group and the working pump, so that the cooling water can be recycled, thereby reducing the waste of water resources;

[0019] By connecting the water supply unit and pipe b, water pressure is provided for the cooling water in pipe b, thereby ensuring the continuous output of cooling water and avoiding cooling water interruption, so that the equipment can operate normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] In the figure: 1. water supply unit, 2. cooling water circulation tank, 3. cooling water pump group, 4. pipeline a, 5. pipeline b, 6. pipeline c, 7. pipeline d, 8. first control valve, 9. second control valve, 10. return pipe, 11. third control valve, 12. heat exchange unit, 13. check valve, 14. pipeline filter, 15. working pump, 16. fourth control valve, 17. temperature online detection instrument, 18. PH / conductivity online detection instrument. DETAILED DESCRIPTION

[0023] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0024] like Figure 1 This is a schematic diagram of the structure of the utility model, a cooling water recovery system, comprising:

[0025] A water supply unit 1 is used to replenish water for the cooling water circulation tank and to provide water pressure for the recovery system. The water supply unit 1 is a water source. The water supply unit 1 includes a water supply pump and a pure water main. The water supply pump can provide power for the flow of water. The water supply unit 1 is used to replenish water for the recovery system. The water input to the water supply unit 1 can be pure water.

[0026] A first control valve 8 is arranged between the water supply unit 1 and the cooling water circulation tank 2 , and the first control valve 8 is located on the pipeline a4 .

[0027] There is a second control valve 9 between the output end of the water supply unit 1 and the pipeline b5, and the second control valve 9 is located on the pipeline d7; when the outlet pressure of the cooling water pump group 3 is lower than 350KPa, the second control valve 9 is interlocked and opened, and the pressure of the pure water main of the water supply unit 1 is used to maintain the water pressure of the cooling water system.

[0028] In the present application, a plurality of pressure detection sensors are arranged, and the pressure detection sensors are used to detect the outlet pressure of the cooling water pump group 3, the outlet pressure of the water supply unit 1, and the pressure of the cooling water circulation tank 2 respectively.

[0029] The outlet mentioned in this application is equivalent to the output end.

[0030] like Figure 1 As shown, the cooling water circulation tank 2 is used to store cooling water. The output end of the water supply unit 1 and the input end of the cooling water circulation tank 2 are connected through a pipe a4. The pipe a4 and the pipe d7 may partially intersect.

[0031] like Figure 1As shown, the cooling water pump unit 3 is used to provide power for the circulation of cooling water. A pressure gauge is installed at the outlet of the cooling water pump unit 3 to facilitate the control of the cooling water outlet pressure at 250KPa. The output end of the cooling water pump unit 3 and the input end of the working pump 15 are connected via a pipe b5, the input end of the cooling water pump unit 3 and the output end of the cooling water circulation tank 2 are connected via a pipe c6, the output end of the water supply unit 1 and the pipe b5 are connected via a pipe d7, the output end of the working pump 15 and the input end of the cooling water circulation tank 2 are connected, and a circulation loop is formed by the cooling water circulation tank 2, the cooling water pump unit 3, and the working pump 15, so that the cooling water can be recycled, thereby reducing the waste of water resources;

[0032] By connecting the water supply unit 1 and the pipe b5, the water pressure is provided for the cooling water in the pipe b, thereby ensuring the continuous output of the cooling water and avoiding the interruption of the cooling water, so that the equipment can operate normally.

[0033] In the present application, two cooling water pump groups 3 are arranged, and the present application does not make any specific limitation on this.

[0034] like Figure 1 As shown, a conductivity detection sensor and a PH detection sensor are installed on the outlet end of the cooling water pump of the cooling water pump group 3. The cooling return water of the cooling water pump of the cooling water pump group 3 is monitored online for conductivity (brine) or PH (alkaline). When the data is abnormal, it means that the mechanical seal of the pump is leaking and needs to be checked one by one.

[0035] When the conductivity (brine) or pH (alkaline) of the cooling water in the cooling water circulation tank is abnormal, the interlock of the second control valve 9 is released, and the second control valve 9 is opened to cut out the cooling water of all pumps for inspection.

[0036] The cooling water pump control switch of cooling water pump group 3 has two gears, namely local control and remote control. Local control means that the pump can only be started or stopped on site, and remote control means that it can be started or stopped in the control room.

[0037] The cooling water circulation tank 2 and the pipeline b5 are connected by a reflux pipe 10, and a third control valve 11 is arranged on the reflux pipe 10. The liquid level of the cooling water circulation tank 2 is controlled by the first control valve 8. When the liquid level is low, the first control valve 8 is opened, and the pure water main of the water supply unit 1 replenishes water to the cooling water circulation tank. When the liquid level is high, the first control valve 8 is closed. There is a reflux pipe 10 on the upper part of the cooling water circulation tank 2 to discharge excess water.

[0038] like Figure 1As shown, the cooling water recovery system also includes a heat exchange unit 12, which can be a heat exchanger. The heat exchanger is an energy-saving device that realizes heat transfer between materials between two or more fluids at different temperatures. The input end of the heat exchange unit 12 is connected to the output end of the working pump 15, and the output end of the heat exchange unit 12 is connected to the input end of the cooling water circulation tank 2. The heat exchange unit 12 is used to adjust the cooling water temperature.

[0039] like Figure 1 As shown, a check valve 13 is installed on the output end of the cooling water pump group 3. The check valve 13 is an automatic valve whose main function is to prevent the medium from flowing back and only allow the medium to flow in one direction. A pipeline filter 14 is installed on the output end of the cooling water pump group 3. The pipeline filter 14 is a filter for the pipeline part in the hydraulic system and is also a device for removing solid impurities during pipeline transportation.

[0040] A pH / conductivity online detection instrument 18 is installed between the output end of the heat exchange unit 12 and the input end of the cooling water circulation tank 2 .

[0041] An online temperature detection instrument 17 is installed between the output end of the heat exchange unit 12 and the input end of the cooling water circulation tank 2 , and a fourth control valve 16 is arranged at the output end of the circulating cooling water of the heat exchange unit 12 .

[0042] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A cooling water recovery system, characterized in that: include: A water supply unit (1), which is used to replenish water for the cooling water circulation tank and to provide water pressure for the recovery system; A cooling water circulation tank (2) for storing cooling water, wherein the output end of the water supply unit (1) and the input end of the cooling water circulation tank (2) are connected via a pipe a (4); A working pump (15) for providing power for the flow of water; A cooling water pump unit (3) is used to provide power for the circulation of cooling water, wherein the output end of the cooling water pump unit (3) and the input end of the working pump (15) are connected via a pipe b (5), the input end of the cooling water pump unit (3) and the output end of the cooling water circulation tank (2) are connected via a pipe c (6), the output end of the water supply unit (1) and the pipe b (5) are connected via a pipe d (7), and the output end of the working pump (15) is connected to the input end of the cooling water circulation tank (2).

2. A cooling water recovery system according to claim 1, characterized in that: A first control valve (8) is arranged between the water supply unit (1) and the cooling water circulation tank (2), and the first control valve (8) is located on the pipeline a (4).

3. A cooling water recovery system according to claim 1, characterized in that: A second control valve (9) is provided between the output end of the water supply unit (1) and the pipeline b (5), and the second control valve (9) is located on the pipeline d (7).

4. A cooling water recovery system according to claim 1, characterized in that: The cooling water circulation tank (2) and the pipeline b (5) are connected via a return pipe (10).

5. A cooling water recovery system as claimed in claim 4, characterized in that: A third control valve (11) is arranged on the return pipe (10).

6. A cooling water recovery system according to claim 1, characterized in that: The cooling water recovery system further comprises a heat exchange unit (12), the input end of the heat exchange unit (12) being connected to the output end of the working pump (15), the output end of the heat exchange unit (12) being connected to the input end of the cooling water circulation tank (2), and the heat exchange unit (12) being used to adjust the temperature of the cooling water.

7. A cooling water recovery system according to claim 1, characterized in that: A check valve (13) is installed on the output end of the cooling water pump unit (3).

8. A cooling water recovery system according to claim 1, characterized in that: A pipeline filter (14) is installed on the output end of the cooling water pump unit (3).

9. A cooling water recovery system according to claim 6, characterized in that: A pH / conductivity online detection instrument (18) is installed between the output end of the heat exchange unit (12) and the input end of the cooling water circulation tank (2).

10. A cooling water recovery system according to claim 6, characterized in that: An online temperature detection instrument (17) is installed between the output end of the heat exchange unit (12) and the input end of the cooling water circulation tank (2), and a fourth control valve (16) is arranged at the circulating cooling water output end of the heat exchange unit (12).

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