Cooling water system

Abstract

The utility model belongs to the technical field of cooling, and discloses a cooling water system. The cooling water system comprises a main water path and a sewage discharging and flushing branch, the main water path comprises a cooling water pump, a condenser, a cooling tower, a water filter and an electronic water processor, the inlet end of the sewage discharging and flushing branch is connected to a water outlet of the cooling water pump, the outlet section of the sewage discharging and flushing branch is connected to the water filter, and cooling water can flush the water filter. By means of the cooling water pump and the sewage draining and flushing branch, cooling water can be used for flushing the sewage draining exit of the water filter, impurities, dirt and the like accumulated in the sewage draining exit are rapidly and thoroughly flushed and discharged, the efficient filtering capacity of the water filter is maintained, then the cleanliness of the interior of the whole cooling water system is guaranteed, the maintenance and cleaning frequency is reduced, and the service life of the cooling water system is prolonged. And due to the high cleanliness, impurities in the condenser and the filler are few, the condenser does not need to be manually disassembled to clean a copper pipe, a high-pressure water gun does not need to be used for cleaning the filler during maintenance, and the manual maintenance cost is also reduced.

Description

Technical Field

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

[0002] The cooling water system can be used in server rooms, subways, laboratories and other places where temperature regulation is required. It uses liquid refrigerants such as water to transfer heat between the places that need to be cooled and the external environment.

[0003] Generally, the cooling water system needs to be cleaned to ensure its heat transfer efficiency and service life. However, this cleaning is often limited to parts of the cooling water system, such as the water filter, the inside of the condenser, the cooling tower filler, etc., and only when there is an abnormal water flow or a high-pressure alarm of the unit, will it be checked and cleaned. This cleaning method requires a lot of manpower or man-hours to clean each time, and the labor cost is high. Utility Model Content

[0004] The utility model aims to provide a cooling water system which can reduce the frequency and cost of manual cleaning.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The cooling water system comprises: a main water circuit, wherein the main water circuit comprises a cooling water pump, a condenser, a cooling tower, a water filter and an electronic water treatment unit, wherein cooling water can flow sequentially and circulate among the cooling water pump, the condenser, the cooling tower, the water filter and the electronic water treatment unit to transfer heat between the condenser and the cooling tower; and a sewage flushing branch circuit, wherein the inlet end of the sewage flushing branch circuit is connected to the outlet of the cooling water pump, and the outlet end of the sewage flushing branch circuit is connected to the water filter, wherein the cooling water can flush the water filter driven by the cooling water pump.

[0007] Preferably, a first switch valve is arranged between the inlet end of the above-mentioned sewage flushing branch and the above-mentioned condenser, and the above-mentioned sewage flushing branch is also provided with a second switch valve. The above-mentioned cooling water system is configured to have a normal operating state and a sewage flushing state. In the above-mentioned normal operating state, the above-mentioned first switch valve is opened, the above-mentioned second switch valve is closed, and the above-mentioned cooling water circulates in the above-mentioned main water channel; in the above-mentioned sewage flushing state, the above-mentioned first switch valve is closed, and the above-mentioned second switch valve is opened, and the above-mentioned cooling water can flow into the above-mentioned water filter through the above-mentioned sewage flushing branch under the drive of the above-mentioned cooling water pump, and flow out of the above-mentioned cooling water system from the sewage outlet of the above-mentioned water filter.

[0008] Preferably, the cooling water system further comprises a sewage branch, which is connected to the sewage outlet; the sewage branch is provided with a sewage valve, which is used to control whether to discharge the cooling water.

[0009] Preferably, a first one-way valve is arranged between the inlet end of the sewage flushing branch and the outlet of the cooling water pump, and a second one-way valve is arranged between the second switch valve and the outlet end of the sewage flushing branch. The first one-way valve and the second one-way valve are used to limit the flow direction of the cooling water.

[0010] Preferably, the cooling water system further comprises a water supply branch, the cooling tower comprises a first water inlet and a second water inlet, the first water inlet is connected to the condenser, and the second water inlet is connected to the water supply branch.

[0011] Preferably, a first water pressure sensor is provided at the water inlet of the filter, and a second water pressure sensor is provided at the water inlet of the condenser. The cooling water system also includes a control module. The first water pressure sensor, the second water pressure sensor, the first switch valve and the second switch valve are all connected to the control module by signals. The control module can read and calculate the detection values ​​of the first water pressure sensor and the second water pressure sensor and drive the first switch valve and the second switch valve to start and stop.

[0012] Preferably, a liquid level sensor is provided in the cooling tower, and a water supply valve is provided in the water supply branch. The water supply valve is used to control whether water is supplied to the cooling tower. Both the liquid level sensor and the water supply valve are connected to the control module signal.

[0013] Preferably, a dosing mechanism is further provided in the cooling tower, and the dosing mechanism is capable of adding system cleaning agent, bactericide and algaecide and pre-filming liquid into the cooling water flowing through the cooling tower.

[0014] Preferably, the condenser is provided with a pressure sensor, and the outlet of the condenser is provided with a third water pressure sensor, and both the pressure sensor and the third water pressure sensor are signal-connected to the control module.

[0015] Preferably, the dosing mechanism is provided with a dosing valve for controlling dosing, and the dosing valve is signal-connected to the control module.

[0016] The beneficial effects of the utility model are as follows: through the cooling water pump and the sewage flushing branch, the sewage outlet of the water filter can be flushed with cooling water according to a preset cycle, and the impurities, dirt, etc. accumulated in the sewage outlet can be quickly and thoroughly flushed out, thereby maintaining the efficient filtering capacity of the water filter, and then ensuring the cleanliness of the entire cooling water system, thereby reducing the frequency of maintenance and cleaning, and the higher cleanliness results in fewer impurities in the condenser and packing. During maintenance, there is no need to manually disassemble the condenser to clean the copper tube and use a high-pressure water gun to clean the packing, which also reduces the cost of manual maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the cooling water system in the utility model;

[0018] Figure 2 It is a flow chart of the water replenishment process in the utility model;

[0019] Figure 3 It is a flow chart of the flushing and sewage discharge process in the utility model;

[0020] Figure 4 It is the automatic drug adding first process and the sewage flushing process in the continuous flow chart of the automatic drug adding first process, sewage flushing process and automatic drug adding second process in the utility model;

[0021] Figure 5 It is the automatic drug adding second process in the continuous process diagram of the automatic drug adding first process, the sewage flushing process and the automatic drug adding second process in the utility model.

[0022] In the figure:

[0023] 1. Main water circuit; 101. Cooling water pump; 102. First one-way valve; 103. Second water pressure sensor; 104. First switch valve; 105. Condenser; 106. Pressure sensor; 107. Third water pressure sensor; 108. Cooling tower; 1081. Filler; 1082. Liquid level sensor; 1083. Dosing mechanism; 1084. Dosing valve; 1085. Water quality detector; 1086. Fan; 109. First water pressure sensor; 110. Water filter; 1101. Sewage outlet; 111. Electronic water processor;

[0024] 2. Sewage flushing branch; 201. Second switch valve; 202. Second check valve;

[0025] 3. Sewage branch; 301. Sewage valve;

[0026] 4. Water supply branch; 401. Water supply valve. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] According to the following Figures 1 to 5 The present invention introduces a cooling water system provided by the utility model.

[0032] like Figure 1As shown, the cooling water system mainly includes a main waterway 1 and a sewage flushing branch 2. Specifically, the main waterway 1 includes a cooling water pump 101, a condenser 105, a cooling tower 108, a water filter 110 and an electronic water processor 111. The cooling water can flow sequentially and circulate among the cooling water pump 101, the condenser 105, the cooling tower 108, the water filter 110 and the electronic water processor 111 to transfer heat between the condenser 105 and the cooling tower 108. The water filter 110 can filter and collect impurities in the cooling water and discharge them through its sewage outlet 1101. The electronic water processor 111 can achieve the effects of anti-scaling and sterilization, further improving the cleanliness of the entire cooling water system.

[0033] For example, in this embodiment, the condenser 105 is arranged in a place with a high temperature such as a machine room or a subway, and the cooling tower 108 is provided with a filler 1081, a fan 1086, etc., and is arranged outside the machine room or the subway, such as a ventilation shaft, etc. When the cooling water passes through the condenser 105, it absorbs the heat in the machine room, and when it flows into the cooling tower 108, it transfers the heat to the air, thereby achieving cooling of the machine room, the subway, etc., and maintaining its suitable ambient temperature and working temperature.

[0034] Continue to refer to Figure 1 As shown, in this embodiment, the inlet end of the sewage flushing branch 2 is connected to the outlet of the cooling water pump 101, and the outlet end of the sewage flushing branch 2 is connected to the water filter 110. The cooling water can flush the water filter 110 under the drive of the cooling water pump 101. When working through the water filter 110, impurities, dirt, etc. are easily accumulated in the sewage outlet 1101, resulting in a large sewage resistance and poor filtering effect. After flushing, the accumulated impurities and dirt can be directly discharged at a large flow rate, thereby restoring the filtering capacity of the water filter 110 and ensuring the cleanliness of the cooling water system.

[0035] By setting up a sewage flushing branch 2 in the cooling water system, through the cooling water pump 101 and the sewage flushing branch 2, the sewage outlet 1101 of the water filter 110 can be flushed with cooling water according to a preset period, and the impurities, dirt, etc. accumulated in the sewage outlet 1101 can be quickly and thoroughly flushed out, thereby maintaining the efficient filtering ability of the water filter 110, and then ensuring the cleanliness of the entire cooling water system, thereby reducing the frequency of maintenance and cleaning. The higher cleanliness results in fewer impurities in the condenser 105 and the packing 1081. During maintenance, there is no need to manually disassemble the condenser 105 to clean the copper pipe and use a high-pressure water gun to clean the packing 1081, which also reduces the cost of manual maintenance.

[0036] Continue to refer to Figure 1As shown, in this embodiment, a first switch valve 104 is provided between the inlet end of the sewage flushing branch 2 and the condenser 105, and a second switch valve 201 is also provided on the sewage flushing branch 2. The cooling water system has a normal operating state and a sewage flushing state. By providing the first switch valve 104 and the second switch valve 201, the cooling water system can be switched between the normal operating state and the sewage flushing state. In the normal operating state, the first switch valve 104 is opened, the second switch valve 201 is closed, and the cooling water circulates in the main waterway 1, thereby cooling a specific place. In the sewage flushing state, the first switch valve 104 is closed, the second switch valve 201 is opened, and the cooling water can flow into the water filter 110 through the sewage flushing branch 2 under the drive of the cooling water pump 101, and the impurities and dirt are flushed out of the cooling water system from the sewage outlet 1101 of the water filter 110.

[0037] Preferably, the cooling water system further comprises a drainage branch 3, which is connected to a drainage port 1101. A drainage valve 301 is provided on the drainage branch 3, which is used to control whether to discharge cooling water. The drainage port 1101 adopts a conical opening to facilitate the automatic and smooth discharge of impurities.

[0038] Continue to refer to Figure 1 As shown, a first one-way valve 102 is provided between the inlet end of the sewage flushing branch 2 and the outlet of the cooling water pump 101, and a second one-way valve 202 is provided between the second switch valve 201 and the outlet end of the sewage flushing branch 2. The first one-way valve 102 and the second one-way valve 202 are used to limit the flow direction of the cooling water, thereby avoiding the backflow phenomenon.

[0039] like Figure 1 As shown, the cooling water system also has a water replenishment branch 4, and the cooling tower 108 has a first water inlet and a second water inlet, the first water inlet is connected to the condenser 105, and the second water inlet is connected to the water replenishment branch 4. Through the water replenishment branch 4, the amount of water reduced by flushing can be replenished, so that the cooling water in the cooling water system meets the cooling and heat dissipation requirements.

[0040] Preferably, a liquid level sensor 1082 is provided in the cooling tower 108, and a water supply valve 401 is provided in the water supply branch 4. The water supply valve 401 is used to control whether to supply water to the cooling tower 108. The liquid level sensor 1082 is connected to the water supply valve 401 by signal. When the liquid level sensor 1082 detects that the real-time liquid level in the cooling tower 108 is lower than the preset liquid level value, an opening signal can be input to the water supply valve 401, thereby realizing the water supply operation of the cooling water system.

[0041] Specifically, in this embodiment, the cooling water system further includes a control module, the liquid level sensor 1082 and the water supply valve 401 are both connected to the liquid level sensor 1082 signal, and the control module can read the detection value of the liquid level sensor 1082 and perform calculations. Figure 2 As shown, the control module first reads the detection value of the liquid level sensor 1082, and compares the detection value of the liquid level sensor 1082 with the preset value of the liquid level. When the detection value of the liquid level sensor 1082 is higher than the preset value of the liquid level, it is determined that condition 1 has been met and the cooling water system is operating normally. When the detection value of the liquid level sensor 1082 is not higher than the preset value of the liquid level, it is determined that condition 1 is not met, and the water replenishment process is executed. The water replenishment process is to open the water replenishment valve 401, so as to input cooling water into the cooling tower 108 through the water replenishment branch 4. In the water replenishment process, when the detection value of the liquid level sensor 1082 is not higher than the preset value of the liquid level, it is determined that condition 2 is not met, and the water replenishment process is repeated. When the detection value of the liquid level sensor 1082 is higher than the preset value of the liquid level in the water replenishment process, it is determined that condition 2 is met, and the amount of water in the cooling water system can meet the heat dissipation requirements. At this time, the water replenishment process is stopped, that is, the water replenishment valve 401 is closed, and normal operation can be switched to.

[0042] Furthermore, in this embodiment, a first water pressure sensor 109 is provided at the water inlet of the filter, and a second water pressure sensor 103 is provided at the water inlet of the condenser 105. The first water pressure sensor 109, the second water pressure sensor 103, the first switch valve 104 and the second switch valve 201 are all connected to the control module by signal. The control module can read and calculate the detection values ​​of the first water pressure sensor 109 and the second water pressure sensor 103 and drive the first switch valve 104, the second switch valve 201 and the sewage valve 301 to open or close.

[0043] Specifically, Figure 3 As shown, in this embodiment, the shutdown process can be manually performed first to shut down the cooling water system, and detection is maintained during the shutdown process. When the real-time pressure difference between the first water pressure sensor 109 and the second water pressure sensor 103 is not greater than the first preset value of the water pressure difference, it is determined that the sewage resistance is small, and condition 3 is not satisfied. At this time, the first switch valve 104 is opened, the second switch valve 201 is closed, the sewage valve 301 is closed, and the shutdown detection is maintained until the startup process is entered. When the real-time pressure difference between the first water pressure sensor 109 and the second water pressure sensor 103 is greater than the first preset value of the water pressure difference, it is determined that the sewage resistance is large, and condition 3 is satisfied. At this time, under the action of the control module, the first switch valve 104 is closed, the second switch valve 201 is opened, and the sewage valve 301 is opened, and the cooling water flows into the water filter 110 only through the sewage flushing branch 2, thereby performing sewage flushing.

[0044] When flushing sewage, flush according to the preset flushing time, and wait according to the preset stabilization time after flushing. In the first 5s of the stabilization time (or other time), when the real-time pressure difference between the first water pressure sensor 109 and the second water pressure sensor 103 is less than the sum of the first preset value of the water pressure difference and the preset deviation value, it is determined that condition 4 has been met, otherwise it is determined that condition 4 is not met, and the sewage flushing is repeated, which can achieve intermittent sewage flushing with better cleaning effect until condition 4 is met. After condition 4 is met, it is detected whether the power-on condition is met. If it is met, the power-on process can be executed and normal operation can be entered. During normal operation, it is also possible to continuously detect whether the real-time pressure difference between the first water pressure sensor 109 and the second water pressure sensor 103 is greater than the first preset value of the water pressure difference, that is, whether condition 3 is met. If it is met again, the shutdown process can be executed and the sewage flushing can be circulated.

[0045] Optionally, in some embodiments, flushing may be performed according to a preset sewage flushing time, and after flushing, waiting may be performed according to a preset stabilization time to determine whether condition 4 has been met, which also falls within the scope of protection of the present utility model.

[0046] like Figure 1 As shown, in this embodiment, a dosing mechanism 1083 is also provided in the cooling tower 108. The dosing mechanism 1083 can add system cleaning agent, bactericidal algaecide and pre-filming liquid to the cooling water flowing through the cooling tower 108 under the control of the control module. The dosing mechanism 1083 is provided with a dosing valve 1084 for controlling the dosing, and the dosing valve 1084 is connected to the control module signal. The condenser 105 is provided with a pressure sensor 106, and the outlet of the condenser 105 is provided with a third water pressure sensor 107, and the pressure sensor 106 and the third water pressure sensor 107 are both connected to the control module signal. The control module can perform a continuous process of the first process of automatic dosing, the sewage flushing process and the second process of automatic dosing according to the detection values ​​of the third water pressure sensor 107, the second water pressure sensor 103 and the pressure sensor 106.

[0047] Specifically, refer to Figure 4 , Figure 5 As shown, in this embodiment, the shutdown process can be manually performed first to shut down the cooling water system, and detection is maintained during the shutdown process. When the real-time pressure difference between the third water pressure sensor 107 and the second water pressure sensor 103 is greater than the second preset water pressure difference value, and the real-time pressure value of the pressure sensor 106 is greater than the high pressure preset value, it is correspondingly determined that condition 5 is satisfied and condition 6 is satisfied, otherwise it is correspondingly determined that condition 5 is not satisfied and condition 6 is not satisfied.

[0048] When condition 5 is not met and condition 6 is not met, the shutdown detection is maintained until the startup process is entered. When any one of condition 5 or condition 6 is met, the continuous process of the first process of automatic dosing, the sewage flushing process and the second process of automatic dosing is entered. In the first process of automatic dosing, the control module opens the dosing valve 1084, so that the bactericidal algaecide and the system cleaning agent are put into the cooling tower 108. At this time, the first switch valve 104 is opened, the second switch valve 201 is closed, and the cooling water pump 101 drives the cooling water to carry the bactericidal algaecide and the system cleaning agent to circulate in the main water channel 1 according to the preset circulation operation time, thereby performing sterilization and algaecide treatment, and melting the dirt on the filler 1081 and the dirt on the condenser 105 water pipe. After circulating according to the preset circulation operation time, the cooling water pump 101 is stopped and waited according to the preset static time. In the first 5s of the static time (or other time), it is detected whether the above condition 5 is met. If it is met, the cooling water pump 101 is controlled to operate according to the preset circulation operation time again. If not, then detect whether the real-time pressure difference between the first water pressure sensor 109 and the second water pressure sensor 103 is greater than the first preset value of the water pressure difference, that is, whether condition 3 is met. If met, the above-mentioned sewage flushing process is circulated, the first switch valve 104 is closed, the second switch valve 201 is opened, and the cooling water containing dirt and impurities is discharged until condition 3 is met (the water replenishment process can be performed according to the water volume in the sewage flushing process). If condition 3 is met, enter the second automatic dosing process.

[0049] like Figure 5 As shown, after entering the second process of automatic dosing, the control module opens the dosing valve 1084, thereby adding the pre-filming liquid into the cooling tower 108. At this time, the first switch valve 104 is opened, the second switch valve 201 is closed, and the cooling water pump 101 drives the pre-filming liquid to circulate in the main waterway 1 according to the preset cycle operation time to form a protective film on the pipe wall. After circulating according to the preset cycle operation time, stop the cooling water pump 101 and wait according to the preset static time. Check whether the above conditions 5 and 3 are met within the first 5s of the static time (or other time). If any one of them is not met, the corresponding automatic dosing first process or flushing and sewage discharge process is entered. If all are met, the startup process can be entered when the startup conditions are met, and the normal operation state is entered. Of course, in the normal operation state, the above conditions 5 and 6 can also be detected in real time, and the continuous process of the automatic dosing first process, sewage flushing process and automatic dosing second process can be re-entered when any one is met.

[0050] Optionally, in this embodiment, the cooling tower 108 is also provided with a water quality detector 1085, which can also detect the cleanliness of the cooling water. The control module can selectively enter the continuous process of the first automatic dosing process, the sewage flushing process and the second automatic dosing process and the sewage flushing process according to its detection results.

[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Cooling water system, characterized in that: include: A main water circuit (1), the main water circuit (1) comprising a cooling water pump (101), a condenser (105), a cooling tower (108), a water filter (110) and an electronic water processor (111), wherein cooling water can flow sequentially and cyclically between the cooling water pump (101), the condenser (105), the cooling tower (108), the water filter (110) and the electronic water processor (111) to transfer heat between the condenser (105) and the cooling tower (108); A sewage flushing branch (2), wherein the inlet end of the sewage flushing branch (2) is connected to the water outlet of the cooling water pump (101), and the outlet end of the sewage flushing branch (2) is connected to the water filter (110), and the cooling water can flush the water filter (110) under the drive of the cooling water pump (101).

2. The cooling water system according to claim 1, characterized in that: A first switch valve (104) is provided between the inlet end of the sewage flushing branch (2) and the condenser (105), and the sewage flushing branch (2) is also provided with a second switch valve (201). The cooling water system is configured to have a normal operating state and a sewage flushing state. In the normal operating state, the first switch valve (104) is opened, the second switch valve (201) is closed, and the cooling water circulates in the main water path (1); In the sewage flushing state, the first switch valve (104) is closed and the second switch valve (201) is opened, and the cooling water, driven by the cooling water pump (101), can flow into the water filter (110) through the sewage flushing branch (2) and flow out of the cooling water system from the sewage outlet (1101) of the water filter (110).

3. The cooling water system according to claim 2, characterized in that: The cooling water system further comprises a sewage branch (3), wherein the sewage branch (3) is connected to the sewage outlet (1101); the sewage branch (3) is provided with a sewage valve (301), and the sewage valve (301) is used to control whether to discharge the cooling water.

4. The cooling water system according to claim 2, characterized in that: A first one-way valve (102) is provided between the inlet end of the sewage flushing branch (2) and the outlet of the cooling water pump (101), and a second one-way valve (202) is provided between the second switch valve (201) and the outlet end of the sewage flushing branch (2). The first one-way valve (102) and the second one-way valve (202) are used to limit the flow direction of the cooling water.

5. The cooling water system according to claim 2, characterized in that: The cooling water system also has a water supply branch (4), and the cooling tower (108) has a first water inlet and a second water inlet, the first water inlet is connected to the condenser (105), and the second water inlet is connected to the water supply branch (4).

6. The cooling water system according to claim 5, characterized in that: A first water pressure sensor (109) is provided at the water inlet of the filter, and a second water pressure sensor (103) is provided at the water inlet of the condenser (105). The cooling water system also includes a control module, and the first water pressure sensor (109), the second water pressure sensor (103), the first switch valve (104) and the second switch valve (201) are all connected to the control module by signals. The control module is capable of reading and calculating the detection values ​​of the first water pressure sensor (109) and the second water pressure sensor (103) and driving the first switch valve (104) and the second switch valve (201) to start and stop.

7. The cooling water system according to claim 6, characterized in that: The cooling tower (108) is provided with a liquid level sensor (1082), the water supply branch (4) is provided with a water supply valve (401), the water supply valve (401) is used to control whether to supply water to the cooling tower (108), and the liquid level sensor (1082) and the water supply valve (401) are both connected to the control module signal.

8. The cooling water system according to claim 6, characterized in that: The cooling tower (108) is also provided with a dosing mechanism (1083), and the dosing mechanism (1083) is capable of adding a system cleaning agent, a bactericide and an algaecide and a pre-filming liquid into the cooling water flowing through the cooling tower (108).

9. The cooling water system according to claim 8, characterized in that: The condenser (105) is provided with a pressure sensor (106), and the outlet of the condenser (105) is provided with a third water pressure sensor (107), and both the pressure sensor (106) and the third water pressure sensor (107) are connected to the control module signal.

10. The cooling water system according to claim 8, characterized in that: The drug adding mechanism (1083) is provided with a drug adding valve (1084) for controlling drug adding, and the drug adding valve (1084) is connected to the control module signal.

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