CN209341663U - Cooling water recirculation system - Google Patents

Abstract

The application provides a cooling water circulation system. The cooling water circulation system includes a first water tank, a second water tank and a first circulating water pump connected in sequence through pipelines. The pipeline connecting the first water tank and the second water tank is provided with a first electromagnetic valve. The first water tank is provided with a first temperature detection device for detecting the first temperature value of the circulating water in the first water tank. When the first temperature value is less than or equal to the first preset temperature value, the circulating water in the first water tank can be directly returned to the water use equipment without passing through the cooling tower and the water chiller by opening the first electromagnetic valve middle. The cooperative use of the first electromagnetic valve and the first temperature detection device reduces the workload of the cooling tower and the chiller.

Description

cooling water circulation system

technical field

The present application relates to the technical field of cooling circulation, in particular to a cooling water circulation system.

Background technique

In industrial plants such as semiconductor factories and data centers, process equipment often heats up during production and operation, resulting in a continuous rise in water temperature in production equipment. In order to ensure that the water in the production equipment reaches the environment required for production throughout the year, a cooling system is required.

In the existing cooling system, regardless of whether the water temperature in the production equipment reaches the required environment for production, the water from the production equipment must be introduced into the cooling tower for primary cooling, and then imported into the chiller for secondary cooling. This kind of cooling and cooling system does not comprehensively consider the influence of external environment and other factors, and does not make full use of the outdoor natural cold source, which increases the workload of the chiller.

Utility model content

Based on this, it is necessary to provide a cooling water circulation system for the problem that the outdoor natural cold source is not fully utilized in the prior art.

A cooling water circulation system. The cooling water circulation system includes a first water tank and a first circulating water pump connected in sequence through pipelines. The cooling water circulation system also includes:

a first solenoid valve disposed in the pipeline between the first water tank and the second water tank; and

The first temperature detecting device is arranged in the first water tank, and is used for detecting whether the first temperature value of the circulating water in the first water tank is less than or equal to the first preset temperature value.

In one of the embodiments, the cooling water circulation system also includes:

a controller, electrically connected to the first solenoid valve, for controlling the opening and closing state of the first solenoid valve; and

The second water tank is arranged between the first water tank and the first circulating water pump, and the pipeline between the first water tank and the second water tank is provided with the first electromagnetic valve.

In one of the embodiments, the cooling water circulation system also includes:

The seventh solenoid valve is located in the water replenishment pipeline of the first water tank, and when the seventh solenoid valve is opened, it starts to replenish water into the first water tank;

The eighth solenoid valve is arranged in the drainage pipe of the second water tank, and when the eighth solenoid valve is opened, the second water tank starts to drain water; and

The conductivity detection device is arranged in the second water tank and is used to detect the conductivity of the process water circulation system.

In one of the embodiments, the cooling water circulation system also includes:

The waste water recycling device is connected with the first circulating water pump through a pipeline.

In one of the embodiments, the cooling water circulation system also includes:

The ninth solenoid valve is arranged in the pipeline between the waste water recovery device and the first circulating water pump. After the ninth solenoid valve is opened, the circulating water discharged from the second water tank flows into the waste water recovery device.

In one of the embodiments, the cooling water circulation system also includes:

A primary circulation system, connected to the first water tank through a pipeline, for cooling the circulating water entering the primary circulation system; and

The secondary circulation system is respectively connected with the primary circulation system and the second water tank through pipelines.

In one of the embodiments, the cooling water circulation system also includes:

The second solenoid valve is located in the pipeline between the primary circulation system and the first water tank;

The third solenoid valve is located in the pipeline between the primary circulation system and the secondary circulation system; and

The fourth solenoid valve is arranged in the pipeline between the secondary circulation system and the second water tank.

In one of the embodiments, the primary circulation system includes:

The second circulating water pump is connected to the first water tank through a pipeline, and the second electromagnetic valve is arranged in the pipeline between the second circulating water pump and the first water tank; and

The cooling tower has a first water inlet and a first water outlet, the first water inlet is connected to the second circulating water pump through a pipeline, the first water outlet is connected to the secondary circulation system through a pipeline, and the The third electromagnetic valve is arranged in the pipeline between the first water outlet and the secondary circulation system.

In one of the embodiments, the secondary circulation system includes:

A heat exchanger is connected to the first water outlet through a pipeline, and the third electromagnetic valve is arranged in the pipeline between the heat exchanger and the first water outlet;

The third circulating water pump is connected to the heat exchanger through a pipeline; and

The chiller is connected to the heat exchanger and the third circulating water pump through pipelines respectively.

In one of the embodiments, the cooling water circulation system also includes:

The fifth solenoid valve is arranged in the pipeline between the third circulating water pump and the heat exchanger; and

The sixth electromagnetic valve is arranged in the pipeline between the chiller and the heat exchanger.

The application provides a cooling water circulation system. The cooling water circulation system includes a first water tank, a second water tank and a first circulating water pump connected in sequence through pipelines. The pipeline connecting the first water tank and the second water tank is provided with a first electromagnetic valve. The first water tank is provided with a first temperature detection device for detecting whether the first temperature value of the circulating water in the first water tank is less than or equal to the first preset temperature value. When the first temperature value is less than or equal to the first preset temperature value, the circulating water in the first water tank can be directly returned to the water use equipment without passing through the cooling tower and the water chiller by opening the first electromagnetic valve middle. The cooperative use of the first electromagnetic valve and the first temperature detection device reduces the workload of the cooling tower and the chiller.

Description of drawings

Fig. 1 is a flow chart of the cooling water circulation control method provided in one embodiment of the present application;

FIG. 2 is a flowchart of a cooling water circulation control method provided in another embodiment of the present application;

3 is a flow chart of a cooling water circulation control method provided in another embodiment of the present application;

FIG. 4 is a schematic structural diagram of a cooling water circulation system provided in an embodiment of the present application;

Fig. 5 is a schematic structural diagram of a cooling water circulation system provided in another embodiment of the present application. Explanation of main components with reference numerals

Process water circulation system 100

controller 10

First solenoid valve 21

Second solenoid valve 22

The third solenoid valve 23

Fourth solenoid valve 24

Fifth solenoid valve 25

Sixth solenoid valve 26

Seventh solenoid valve 27

Eighth solenoid valve 28

Ninth solenoid valve 29

The first temperature detection device 31

Second temperature detection device 32

The third temperature detection device 33

Fourth temperature detection device 34

Conductivity detection device 40

Wastewater recovery device 50

Water equipment 60

First water tank 210

Second water tank 220

The first circulating water pump 230

Primary circulation system 300

Second circulating water pump 310

Cooling tower 320

The first water inlet 321

The first water outlet 322

Secondary circulation system 400

Heat exchanger 410

The third circulating water pump 420

Chiller 430

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the cooling water circulation system of the present application will be further described in detail through the following examples and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

Referring to FIG. 1 , an embodiment of the present application provides a cooling water circulation control method. The cooling water circulation control method includes:

S100, detecting and judging whether the first temperature value of the circulating water in the first water tank 210 is less than or equal to a first preset temperature value, and the first preset temperature value is a temperature value suitable for the water equipment 60 to work.

In step S100, since the water in the water-using device 60 flows to the first water tank 210, the temperature will be naturally lowered by the movement of circulating water. The first temperature value of the circulating water in the first water tank 210 is detected by the first temperature detection device 31 . And the controller 10 such as a single-chip microcomputer or a microprocessor judges whether the first temperature value is lower than the first preset temperature value. The first preset temperature value can be set arbitrarily by those skilled in the art. For example, the first preset temperature value may be 22°C.

S200, when it is detected and judged that the first temperature value is less than or equal to the first preset temperature value, control the first electromagnetic valve 21 to open, and the circulating water in the first water tank 210 passes through the first circulating water pump 230 Get back in the described water equipment 60.

In step S200, the controller 10 may control the opening and closing state of the first electromagnetic valve. For example, the first preset temperature value is 22°C, and the first temperature value detected by the first temperature detection device 31 is 20°C. The single-chip microcomputer can control the opening of the first electromagnetic valve. At this time, the passage between the first water tank 210 and the first circulating water pump 230 is opened, and the circulating water in the first water tank 210 returns to the water-using equipment 60 through the first circulating water pump 230 . Of course, the circulating water in the first water tank 210 may also flow into the second water tank 220 . Then return to the water equipment 60 through the first circulating water pump 230 connected to the second water tank 220 , and continue to be used by the water equipment 60 .

In this embodiment, the controller 10 controls the opening and closing state of the first solenoid valve 21 according to the judgment result. When the first temperature value is less than or equal to the first preset temperature value, the controller 10 controls the first solenoid valve 21 to open. At this time, the passage between the first water tank 210 and the first circulating water pump 230 is opened. The circulating water in the first water tank 210 may not be cooled by the primary circulating system 300 and the secondary circulating system 400 , and flow back to the water-using equipment 60 through the first circulating water pump 230 . The cooling water circulation control method reduces the workload of the primary circulation system 300 and the secondary circulation system 400 by controlling the opening and closing state of the first solenoid valve 21 .

Please refer to Figure 2, in one of the embodiments, it also includes:

S300, when detecting and judging that the first temperature value is greater than the first preset temperature value, detecting and judging whether the outdoor wet bulb temperature value is less than or equal to a second preset temperature value, the second preset temperature The value is the outdoor temperature value at which cooling can be completed by using the primary circulation system 300 .

In step S300, when the controller 10 determines that the first temperature value is greater than the first preset temperature value. That is, the temperature of the circulating water in the first water tank 210 cannot be lowered to a temperature suitable for the operation of the water-using equipment 60 by means of natural cooling through the movement of the circulating water. At this time, the outdoor wet bulb temperature can be detected by the second temperature detection device 32 . The second temperature detection device 32 may be a temperature sensor installed outdoors. The controller 10 judges whether the wet bulb temperature value is less than or equal to a second preset temperature value. The wet bulb temperature represents the lowest temperature that the circulating water can reach through evaporation at a certain time at a certain place. For this application, the wet bulb temperature represents the lowest temperature to which circulating water may be cooled in the primary cooling system 300 . Therefore, the lower the wet bulb temperature value, the better the natural cooling source for cooling. The second preset temperature value can be set according to the circulating water temperature required by the water equipment 60 to work. The second preset temperature value needs to be properly lower than the water temperature required by the water equipment 60 to work. For example, the temperature of the circulating water required for the water equipment 60 to work is 22°C, and the second preset temperature value can be set to 20°C.

S400, when the outdoor wet bulb temperature value is less than or equal to the second preset temperature value, control the first solenoid valve 21 to close and the second solenoid valve 22 to open. In order to introduce the circulating water in the first water tank 210 into the primary circulation system 300 . After the circulating water in the water equipment is subjected to primary cooling treatment, the third solenoid valve 23 and the fourth solenoid valve 24 are controlled to open. The circulating water in the primary circulating system 300 is returned to the water-using equipment 60 through the first circulating water pump 230 .

In step S400, when the outdoor wet bulb temperature value is less than or equal to the second preset temperature value. That is to say, it can be explained that the temperature of the circulating water required by the water-using equipment 60 can be lowered by using the natural cooling source through the primary circulation system 300 . A third temperature detection device 33 may be provided in the primary circulation system 300 to detect a third temperature value of circulating water after the primary circulation system 300 has been running for a period of time. When the third temperature value is less than or equal to the first preset temperature value, the controller 10 controls the third solenoid valve 23 and the fourth solenoid valve 24 to open, and the circulation in the primary circulation system 300 The water returns to the water equipment 60 through the first circulating water pump 230 . When the third temperature value is greater than the first preset temperature value, the primary circulation system 300 continues to use a natural cooling source to cool down the circulating water in the water use equipment 60 . Until the controller 10 determines that the third temperature value is less than or equal to the first preset temperature value. The controller 10 controls the opening of the third electromagnetic valve 23 and the fourth electromagnetic valve 24 , and the circulating water in the primary circulation system 300 returns to the water-using equipment 60 through the first circulating water pump 230 .

In this embodiment, the controller 10 judges whether the outdoor wet bulb temperature value is less than or equal to the second preset temperature value. The controller 10 controls the opening and closing states of the first solenoid valve 21 and the second solenoid valve 22 according to the judgment result. When the wet bulb temperature value is less than or equal to the second preset temperature value, the controller 10 controls the first solenoid valve 21 to close and controls the second solenoid valve 22 to open. In order to achieve the purpose of using the primary circulation system 300 to use a natural cold source to perform primary cooling of the circulating water from the water use equipment 60 . The cooling water circulation control method controls the opening and closing states of the first electromagnetic valve 21 and the second electromagnetic valve 22, and makes full use of the natural cold source to cool the circulating water from the water equipment 60, thereby reducing the temperature of the secondary circulation system. 400, the energy efficiency of the secondary circulation system 400 is improved.

In one of the embodiments, it also includes:

S500. When the outdoor wet bulb temperature value is greater than the second preset temperature value, control the first solenoid valve 21 to close and the second solenoid valve 22 to open. In order to introduce the circulating water in the first water tank 210 into the primary circulation system 300 . After the circulating water in the water equipment 60 is subjected to primary cooling treatment, the fourth solenoid valve 24 is controlled to be closed, and the third solenoid valve 23 , fifth solenoid valve 25 and sixth solenoid valve 26 are opened. To introduce the circulating water in the primary circulation system 300 into the secondary circulation system 400 . After the circulating water flowing out from the primary circulation system 300 is subjected to secondary cooling treatment, the fourth electromagnetic valve 24 is controlled to open, and the circulating water in the secondary circulation system 400 passes through the first circulating water pump 230 Get back in the described water equipment 60.

The outdoor wet bulb temperature value is greater than the second preset temperature value. That is to say, it can be explained that the circulating water flowing out of the water use equipment 60 cannot be lowered to a temperature suitable for the water use equipment 60 to continue to work only through one-stage cooling. For example, the temperature value suitable for the continuous operation of the water equipment 60 is 22°C, and the temperature value of the circulating water flowing out from the water equipment 60 is 35°C. The temperature of the outgoing circulating water drops to 30°C. At this time, the controller 10 controls the fourth solenoid valve 24 to close, and the third solenoid valve 23 , the fifth solenoid valve 25 and the sixth solenoid valve 26 to open. The circulating water in the primary circulation system 300 is introduced into the secondary circulation system 400, and the circulating water entering the secondary circulation system 400 is processed by the reverse Carnot cycle formed by the secondary circulation system 400. Secondary cooling. A fourth temperature detection device 34 may be provided in the secondary circulation system 400 . The fourth temperature detection device detects the fourth temperature value of the circulating water after the secondary circulation system 400 has been running for a period of time. When the fourth temperature value is less than or equal to the first preset temperature value, the controller 10 controls the fourth solenoid valve 24 to open. The circulating water in the secondary circulating system 400 is returned to the water equipment 60 through the first circulating water pump 230 .

In this embodiment, when the wet bulb temperature value is greater than the second preset temperature value, the cooling effect of natural energy is reduced. After the primary circulation system 300 has undergone primary cooling treatment, the circulating water flowing out of the water equipment 60 is reduced to a certain temperature value, and then the secondary circulation system 400 is used for secondary cooling. Compared with the refrigeration method of the secondary circulation system 400, the primary circulation system 300 uses a natural cooling source for refrigeration. The power consumption of the primary circulation system 300 is very low, which shares the workload of the secondary circulation system 400 and reduces the power consumption of the secondary circulation system 400, thereby reducing the operating cost of the refrigeration equipment.

Please refer to Figure 3, in one of the embodiments, it also includes:

S600, detecting whether the conductivity value of the circulating water in the second water tank 220 is greater than a preset conductivity value.

Since the conductivity value in the cooling water circulation system 100 is too large, it may cause scale inhibition and corrosion of pipelines or equipment. Therefore, a conductivity detection device 40 may be provided on the second water tank. The conductivity detection device 40 detects the conductivity value of the circulating water in the second water tank 220 . The controller 10 judges whether the conductivity value is greater than a preset conductivity value. The preset conductivity value can be set arbitrarily by those skilled in the art.

S700, when whether the conductivity value of the circulating water in the second water tank 220 is greater than the preset conductivity value, control the opening of the seventh solenoid valve 27 and the eighth solenoid valve 28, replenish water to the first water tank 210, and Drain the second water tank 220 .

In step S700 , the seventh solenoid valve 27 is a water replenishment valve provided on the water replenishment pipeline of the first water tank 210 . The eighth solenoid valve 28 is a drain valve arranged on the drain pipe of the second water tank 220 . When the conductivity value is greater than the preset conductivity value, the controller 10 controls the seventh solenoid valve 27 to open, the first water tank 210 starts to replenish water, and the second water tank 220 starts to drain water.

In this embodiment, the controller 10 can control the opening and closing states of the seventh solenoid valve 27 and the eighth solenoid valve 28 according to the judgment result. Therefore, it is ensured that the conductivity value of the circulating water in the cooling water circulation system 100 is within a safe range. The cooling water circulation control method controls the first water tank 210 to replenish water and controls the second water tank 220 to drain water to avoid scaling and corrosion of the pipes or equipment cooling equipment in the cooling water circulation system 100, improve the heat exchange efficiency of the equipment, and prolong the life of the equipment. Long service life and reduce operation and maintenance costs.

In one of the embodiments, it also includes:

S800, control the opening of the ninth electromagnetic valve 29, and introduce the circulating water discharged from the second water tank 220 into the waste water recovery device 50, so as to recycle the circulating water discharged from the second water tank 220.

The wastewater recycling device 50 is connected to the first circulating water pump 230 through a pipeline. The ninth solenoid valve 29 is disposed on the pipeline between the waste water recycling device 50 and the first circulating water pump 230 . When the controller 10 controls the opening of the seventh solenoid valve 27 and the ninth solenoid valve 29 and the second water tank 220 starts to drain water, the discharged circulating water flows into the waste water through the first circulating water pump 230 Recovery device 50. The waste water recovery device 50 can be connected with the greening pipeline or the flushing pipeline of the toilet, and is used for greening vegetation or water for the toilet.

In this embodiment, the cooling water circulation control method controls the circulating water discharged from the second water tank 220 to flow into the waste water recycling device 50 . The waste water recovery device 50 can be connected with the greening pipeline or the flushing pipeline of the toilet, and is used for greening vegetation or water for the toilet. The cooling water circulation control method reduces the waste of water resources and also reduces the cost of enterprises.

Referring to FIG. 4 , an embodiment of the present application provides a cooling water circulation system 100 . The cooling water circulation system 100 includes a first water tank 210 and a first circulating water pump 230 connected in sequence through pipelines. The cooling water circulation system 100 also includes a first solenoid valve 21 and a first temperature detection device 31 .

The water inlet of the first water tank 210 is connected to the water outlet of the water-using device 60 through a pipe.

The first electromagnetic valve 21 is arranged in the pipeline between the water outlet of the first water tank 210 and the first circulating water pump 230 . When the first solenoid valve 21 is opened, the circulating water in the first water tank 210 can return to the water-using equipment 60 through the first circulating water pump 230 .

The first temperature detecting device 31 is arranged in the first water tank 210 and is used for detecting a first temperature value of the circulating water in the first water tank 210 . The first temperature detection device 31 may be a temperature sensor. For example, the first preset value is 25°C, that is, the circulating water temperature value required for the normal operation of the water-using equipment 60 is 25°C. When the first temperature value detected by the first temperature detection device 31 is 23° C., the first electromagnetic valve 21 can be opened manually or controlled by a single-chip microcomputer. At this time, the circulating water in the first water tank 210 can be directly returned to the water-using equipment 60 through the first circulating water pump 230 . Conversely, when the first temperature value detected by the first temperature detection device 31 is 26° C., the first solenoid valve is in a closed state. At this time, the circulating water in the first water tank 210 cannot return to the water-using equipment 60 through the first circulating water pump 230 .

In this embodiment, the cooling water circulation system 100 includes a first water tank 210 and a first circulating water pump 230 connected in sequence through pipelines. A first electromagnetic valve 21 is provided on the pipeline connecting the first water tank 210 and the first circulating water pump 230 . The first water tank 210 is provided with a first temperature detection device 31 for detecting a first temperature value of the circulating water in the first water tank 210 . When the first temperature value is less than or equal to the first preset temperature value, by opening the first electromagnetic valve 21, the circulating water in the first water tank 210 can be directly Get back in the described water equipment 60. The cooperative use of the first electromagnetic valve 21 and the first temperature detection device 31 reduces the workload of the cooling tower 320 and the chiller 430 .

Please refer to FIG. 5 , in one embodiment, the cooling water circulation system 100 further includes a controller 10 and a second water tank 220 . The controller 10 is electrically connected with the first solenoid valve 21 and used for controlling the opening and closing state of the first solenoid valve 21 . The second water tank 220 is arranged between the first water tank 210 and the first circulating water pump 230, and the pipeline between the first water tank 210 and the second water tank 220 is provided with the first solenoid valve twenty one.

The controller 10 can be a single-chip microcomputer or a microprocessor. The controller 10 is connected in communication with the first temperature detection device 31 for obtaining the first temperature value detected by the first temperature detection device 31 . In addition, the controller 10 can also communicate with a remote touch screen. The current staff can arbitrarily set the first preset temperature value and the second preset temperature value through the touch screen. The controller 10 can acquire the first preset temperature value and compare it with the first temperature value. For example, the current staff can set the first preset temperature value to 25° C. on the touch screen. The first temperature value detected by the first temperature detection device 31 is 23°C. At this time, the controller 10 can immediately control the opening of the first solenoid valve 21 by judging that the first preset temperature value is greater than the first temperature value.

In this embodiment, the cooling water circulation system 100 sets the controller 10 to automatically control the opening and closing state of the first electromagnetic valve 21 , and then realizes controlling which cooling mode the circulating water in the water-using equipment 60 uses to cool down. Since the setting of the touch screen is added at the remote end, the first preset temperature value can be set arbitrarily according to the environmental changes or the needs of the water equipment, and the operation is more flexible.

In one of the embodiments, the cooling water circulation system 100 further includes a seventh solenoid valve 27, an eighth solenoid valve 28 and a conductivity detection device 40.

The seventh solenoid valve 27 is installed in the water replenishment pipeline of the first water tank 210 , and when the seventh solenoid valve 27 is turned on, it starts to replenish water into the first water tank 210 . The seventh solenoid valve 27 is electrically connected to the controller 10 .

The eighth solenoid valve 28 is disposed in the drain pipe of the second water tank 220 , and when the eighth solenoid valve 28 is turned on, the second water tank 220 starts to drain water. The eighth solenoid valve 28 is electrically connected to the controller 10 .

The conductivity detection device 40 is installed in the second water tank 220 for detecting the conductivity of the circulating water in the cooling water circulation system 100 . The conductivity detection device 40 is in communication connection with the controller 10 .

Current staff can set a preset conductivity value on the touch screen according to the needs of the cooling water circulation system 100 . The conductivity detection device 40 can detect the conductivity value of the circulating water in the second water tank 220 in real time. When the controller 10 judges that the conductivity value of the circulating water in the second water tank 220 is greater than the preset conductivity value, the controller 10 controls the seventh solenoid valve 27 and the eighth solenoid valve Open. The first water tank 210 starts to replenish water and at the same time the second water tank 220 starts to drain water. Liquid level gauges may be installed in the first water tank 210 and the second water tank 220 . The liquid level gauge can be an ultrasonic liquid level gauge. The liquid level gauge can detect the status of the circulating water in the first water tank 210 and the second water tank 220 in real time, so as to prevent the circulating water from overflowing.

In this embodiment, the controller 10 can control the opening and closing states of the seventh solenoid valve 27 and the eighth solenoid valve 28 according to the judgment result. Therefore, it is ensured that the conductivity value of the circulating water in the cooling water circulation system 100 is within a safe range. The cooling water circulation control method controls the first water tank 210 to replenish water and controls the second water tank 220 to drain water to avoid scaling and corrosion of the pipes or equipment cooling equipment in the cooling water circulation system 100, improve the heat exchange efficiency of the equipment, and prolong the life of the equipment. Long service life and reduce operation and maintenance costs.

In one of the embodiments, the cooling water circulation system 100 further includes a ninth solenoid valve 29 and a waste water recycling device 50 . The wastewater recycling device 50 is connected to the first circulating water pump 230 through a pipeline. The ninth solenoid valve 29 is disposed on the pipeline between the waste water recycling device 50 and the first circulating water pump 230 . When the controller 10 controls the opening of the seventh solenoid valve 27 and the ninth solenoid valve 29 and the second water tank 220 starts to drain water, the discharged circulating water flows into the waste water through the first circulating water pump 230 Recovery device 50. The waste water recovery device 50 can be connected with the greening pipeline or the flushing pipeline of the toilet, and is used for greening vegetation or water for the toilet.

In this embodiment, the controller 10 controls the circulating water discharged from the second water tank 220 to flow into the waste water recycling device 50 . The waste water recovery device 50 can be connected with the greening pipeline or the flushing pipeline of the toilet, and is used for greening vegetation or water for the toilet. The cooling water circulation control method reduces the waste of water resources and also reduces the cost of enterprises.

In one embodiment, the cooling water circulation system 100 further includes a primary circulation system 300 and a secondary circulation system 400 .

The primary circulation system 300 includes a second circulating water pump 310 and a cooling tower 320 . The second circulating water pump 310 is connected to the first water tank 210 through a pipeline. The second solenoid valve 22 is disposed in the pipeline between the second circulating water pump 310 and the first water tank 210 . The second solenoid valve 22 is electrically connected to the controller 10 . The cooling tower 320 has a first water inlet 321 and a first water outlet 322 . The first water inlet 321 is connected to the second circulating water pump 310 through pipelines, and the first water outlet 322 is connected to the secondary circulation system 400 through pipelines. The third solenoid valve 23 is disposed in the pipeline between the first water outlet 322 and the secondary circulation system 400 . The third solenoid valve 23 is electrically connected to the controller 10 . The cooling tower 320 may also be provided with a third temperature detection device 33 . The third temperature detection device 33 is used to detect the third temperature value in the cooling tower 320 after the primary circulation system 300 has been running for a period of time.

The cooling tower 320 includes multiple sets of spray pumps and multiple sets of fans. When the controller 10 controls the opening of the second solenoid valve, the second circulating water pump 310 provides power to introduce the circulating water in the first water tank 210 into the pipeline of the cooling tower 320 . The spray pump sprays cold water on the pipeline containing the circulating water that needs to be refrigerated. And the fan blows air to the pipeline containing the circulating water that needs to be refrigerated. The spray pump is used in conjunction with the fan to achieve the purpose of physical cooling by using a natural cooling source. The third temperature detection device 33 detects the third temperature value of the cooling tower in real time. The current staff can also set a third preset temperature value on the touch screen. The third preset temperature value is a temperature value that can enter the secondary circulation system 400 . Only when the third temperature value is less than or equal to the first preset temperature value, the spray pump and the fan stop working. When the wet bulb temperature value is less than or equal to the second preset temperature value. At this time, the secondary circulation system 400 stops working. At this time, the circulating water in the cooling tower 320 is returned to the water equipment through the first circulating water pump 230 . When the wet bulb temperature value is greater than the second preset temperature value. And when the third temperature value is less than or equal to the third preset temperature value, the spray pump and the fan stop working. At this time, the circulating water in the cooling tower 320 enters the secondary circulation system 400 for secondary cooling treatment.

The secondary circulation system 400 includes a heat exchanger 410 , a third circulating water pump 420 and a chiller 430 .

The heat exchanger 410 is connected to the first water outlet 322 through a pipe. The third solenoid valve 23 is provided on the pipeline between the heat exchanger 410 and the first water outlet 322 . The third solenoid valve 23 is electrically connected with the controller 10 . The heat exchanger 410 is connected to the second water tank 220 through pipelines. The fourth solenoid valve 24 is provided on the pipeline between the heat exchanger 410 and the second water tank 220 . The fourth solenoid valve 24 is electrically connected to the controller 10 .

The third circulating water pump 420 is connected to the heat exchanger 410 through a pipeline. The fifth electromagnetic valve 25 is provided on the pipeline between the third circulating water pump 420 and the heat exchanger 410 . The fifth solenoid valve 25 is electrically connected to the controller 10 .

The chiller unit 430 is connected to the heat exchanger 410 and the third circulating water pump 420 through pipelines respectively. The sixth solenoid valve 26 is provided on the pipeline between the chiller 430 and the heat exchanger 410 . The sixth solenoid valve 26 is electrically connected to the controller 10 . A fourth temperature detection device 34 may also be provided on the chiller 430 . The fourth temperature detection device 34 is used to detect the fourth temperature value in the chiller 430 in real time. The fourth temperature detection device 34 is in communication connection with the controller 10 .

When the controller 10 controls the second electromagnetic valve 22 to open, the primary circulation system 300 can use a natural cold source to perform primary cooling treatment on the circulating water entering the primary circulation system 300 . When the controller 10 controls the opening of the third solenoid valve 23 and the fourth solenoid valve 24 , the circulating water in the cooling tower 320 enters the second water tank 220 through the heat exchanger 410 . Then return to the water equipment 60 through the first circulating water pump 230 . When the controller 10 controls the fourth solenoid valve 24 to close, the third solenoid valve 23 , the fifth solenoid valve 25 and the sixth solenoid valve 26 are opened. The circulating water in the primary circulation system 300 flows into the secondary cooling system 400 . The secondary cooling system 400 uses reverse Carnot cycle to perform secondary cooling on the circulating water entering the secondary circulating system 400 . When the fourth temperature value is less than or equal to the first preset value, the secondary circulation system 400 stops working. The controller 10 controls the fourth electromagnetic valve 24 to open, and the circulating water in the secondary circulation system 400 enters the second water tank 220 and returns to the water-using equipment through the first circulating water pump 230 . On the contrary, the secondary circulation system 400 continues to work until the controller 10 determines that the fourth temperature value is less than or equal to the first preset value.

In this implementation, the cooling water circulation system 100 is used in cooperation with the primary circulation system 300 and the secondary circulation system 400 . The cooling water circulation system 100 makes full use of the natural cooling source to cool down the circulating water from the water equipment 60 , which reduces the workload of the secondary circulation system 400 and improves the energy efficiency of the secondary circulation system 400 .

The various technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims (10)

1. a kind of cooling water recirculation system (100), including pass through sequentially connected first water tank (210) of pipeline and first circulation Water pump (230), which is characterized in that the cooling water recirculation system (100) further include:

First solenoid valve (21), the pipeline being set between first water tank (210) and the first circulation water pump (230)；With And

First temperature-detecting device (31) is set to first water tank (210), follows for detecting in first water tank (210) First temperature value of ring water.

2. cooling water recirculation system (100) according to claim 1, which is characterized in that further include:

Controller (10) is electrically connected with first solenoid valve (21), for controlling the folding shape of first solenoid valve (21) State；And

Second water tank (220) is set between first water tank (210) and the first circulation water pump (230), described first Pipeline between water tank (210) and second water tank (220) is equipped with first solenoid valve (21).

3. cooling water recirculation system (100) according to claim 2, which is characterized in that further include:

7th solenoid valve (27) is set to the moisturizing pipeline of first water tank (210), when the 7th solenoid valve (27) is opened Afterwards, start the moisturizing into first water tank (210)；

8th solenoid valve (28) is set to the drainage pipeline of second water tank (220), when the 8th solenoid valve (28) is opened Afterwards, second water tank (220) starts to drain；And

Conductivity detector (40) is set to second water tank (220), for detecting the cooling water recirculation system (100) The conductivity of middle recirculated water.

4. cooling water recirculation system (100) according to claim 3, which is characterized in that further include:

Waste water reclaiming device (50) is connect with the first circulation water pump (230) by pipeline.

5. cooling water recirculation system (100) according to claim 4, which is characterized in that further include:

9th solenoid valve (29), the pipe being set between the waste water reclaiming device (50) and the first circulation water pump (230) Road, after the 9th solenoid valve (29) is opened, the recirculated water of the second water tank (220) discharge flows into the waste water reclaiming device (50)。

6. cooling water recirculation system (100) according to claim 2, which is characterized in that further include:

Primary cycle system (300) is connect with first water tank (210) by pipeline, is followed for cooling into the level-one Recirculated water in loop system (300)；And

Secondary cycle system (400) passes through pipeline with the primary cycle system (300) and second water tank (220) respectively Connection.

7. cooling water recirculation system (100) according to claim 6, which is characterized in that further include:

Second solenoid valve (22), the pipeline being set between the primary cycle system (300) and first water tank (210)；

Third solenoid valve (23), the pipe being set between the primary cycle system (300) and the secondary cycle system (400) Road；And

4th solenoid valve (24), the pipeline being set between the secondary cycle system (400) and second water tank (220).

8. cooling water recirculation system (100) according to claim 7, which is characterized in that the primary cycle system (300) Include:

Second circulation water pump (310) is connect with first water tank (210) by pipeline, and the second solenoid valve (22) is set to Pipeline between the second circulation water pump (310) and first water tank (210)；And

Cooling tower (320) has the first water inlet (321) and the first water outlet (322), first water inlet (321) and institute It states second circulation water pump (310) to connect by pipeline, first water outlet (322) and the secondary cycle system (400) are logical Piping connection, the third solenoid valve (23) be set to first water outlet (322) and the secondary cycle system (400) it Between pipeline.

9. cooling water recirculation system (100) according to claim 8, which is characterized in that the secondary cycle system (400) Include:

Heat exchanger (410) is connect with first water outlet (322) by pipeline, and the third solenoid valve (23) is set to described Pipeline between heat exchanger (410) and first water outlet (322)；

Third water circulating pump (420) is connect by pipeline with the heat exchanger (410)；And

Water cooler (430) is connect with the heat exchanger (410) and the third water circulating pump (420) by pipeline respectively.

10. cooling water recirculation system (100) according to claim 9, which is characterized in that further include:

5th solenoid valve (25), the pipeline being set between the third water circulating pump (420) and the heat exchanger (410)；And

6th solenoid valve (26), the pipeline being set between the water cooler (430) and the heat exchanger (410).