Cooler cleaning system and cleaning method

Abstract

The invention belongs to the technical field of cooling equipment, and particularly relates to a cooler cleaning system and method.The cooler cleaning system comprises a cooling water supply assembly, a water supply main valve, a first electric valve and a second electric valve, and a first outlet of the cooling water supply assembly is connected with one end of the water supply main valve; the output end of the water supply main valve is connected with one end of the first electric valve and one end of the second electric valve, a first opening of the first water outlet pipeline is connected with a second outlet of the first cooler, and a first opening of the second water outlet pipeline is connected with a second outlet of the second cooler. The output end of the medicament adding assembly is connected with the first water outlet pipeline and the second water outlet pipeline respectively; the output end of the particulate matter adding assembly is connected with a first port of the first water outlet pipeline and a second port of the second water outlet pipeline respectively; according to the cooler cleaning system, the cooler can be automatically cleaned conveniently, the operation stability of the cooler is improved, and the overhaul period is prolonged.

Description

Technical Field

[0001] This application belongs to the field of cooling equipment technology, specifically relating to a cooler cleaning system and cleaning method. Background Technology

[0002] Hydropower stations in tropical regions supply water containing a large number of shellfish and other aquatic organisms. After unit maintenance and during cooler operation, malfunctions such as cooler blockage and reduced water flow frequently occur, leading to increased bearing temperature and threatening the safe and stable operation of the unit.

[0003] Each overhaul requires disassembly and cleaning of the cooler, consuming significant manpower and resources. Frequent disassembly also poses risks of cooler damage and oil leaks. During the later stages of the flood season, the inner walls of the cooler's copper tubes accumulate large amounts of sludge, causing a significant drop in cooling water flow and extremely low cooling efficiency; a single cooler may not meet the unit's operational requirements. In some cases, it may even be necessary to shut down the unit and disassemble the cooler for cleaning. Each year, the maintenance of the bearing oil cooler requires substantial manpower and resources, taking 4-5 days, resulting in high time costs. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose a cooler cleaning system that facilitates automatic cleaning of the cooler, improves the stability of cooler operation, and extends the maintenance cycle.

[0006] An embodiment of the present invention includes a cooler cleaning system comprising: The system includes a cooling water supply assembly, a main water supply valve, a first electric valve, and a second electric valve. The first outlet of the cooling water supply assembly is connected to one end of the main water supply valve, and the output end of the main water supply valve is connected to one end of the first electric valve and one end of the second electric valve. A first cooler and a second cooler, wherein the other end of the first electric valve is connected to the first port of the first cooler, and the other end of the second electric valve is connected to the first port of the second cooler. The system includes an automatic cleaning valve, a main drain valve, a reagent addition component, a first water outlet pipe, and a second water outlet pipe. The first outlet pipe has a first port connected to the second outlet of the first cooler, and the first outlet pipe has a first port connected to the second outlet of the second cooler. One end of the automatic cleaning valve is connected to the second outlet of the cooling water supply component, and the other end of the automatic cleaning valve is connected to the first port of the first water outlet pipe, the first port of the second water outlet pipe, and the input end of the main drain valve. The output end of the reagent addition component is connected to the first water outlet pipe and the second water outlet pipe, respectively. A particulate matter addition component, wherein the output end of the particulate matter addition component is connected to the first port of the first water outlet pipe and the second port of the second water outlet pipe respectively. A first drain valve and a second drain valve, wherein the first drain valve is connected to the first port of the first cooler and the second drain valve is connected to the first port of the second cooler.

[0007] The cooler cleaning system of the present invention facilitates automatic cleaning of the cooler, improves the stability of cooler operation, and extends the maintenance cycle.

[0008] In some embodiments, the first water outlet pipeline includes a first pipe and a first water shut-off valve. One end of the first pipe is connected to the second port of the first cooler, and the other end of the first pipe is connected to one end of the first water shut-off valve. The other end of the first water shut-off valve is connected to the main drain valve. The second water outlet pipeline includes a second pipe and a second water shut-off valve. One end of the second pipe is connected to the second port of the second cooler, and the other end of the second pipe is connected to one end of the second water shut-off valve. The other end of the second water shut-off valve is connected to the main drain valve and the automatic cleaning valve, respectively. The drug addition assembly includes a drug storage tank, a first pump, a first drug valve, and a second drug valve. The input end of the first pump is connected to the drug storage tank, and the output end of the first pump is connected to the first drug valve and the second drug valve. The first drug valve is connected to the first pipe, and one end of the second drug valve is connected to the second pipe.

[0009] In some embodiments, the particulate matter addition assembly includes a particulate matter storage tank, a second pump, a first addition valve, and a second addition valve. The particulate matter storage tank is connected to the input end of the second pump, and the output end of the second pump is connected to the first addition valve and the second addition valve. One end of the first addition valve is connected to the first pipe, and one end of the second addition valve is connected to the second pipe.

[0010] In some embodiments, the cooler cleaning system further includes a first flow meter, a second flow meter, a third flow meter, and a fourth flow meter, wherein the first flow meter is disposed at a first inlet of the first cooler to monitor the flow rate at the first inlet of the first cooler. The second flow meter is installed at the first inlet of the second cooler to monitor the flow rate at the first inlet of the second cooler; The third flow meter is installed at the second port of the first cooler to monitor the flow rate at the second port of the first cooler. The fourth flow meter is installed at the second port of the second cooler to monitor the flow rate at the second port of the second cooler.

[0011] In some embodiments, the cooler cleaning system further includes a first thermometer, a second thermometer, a third thermometer, and a fourth thermometer, wherein the first thermometer is disposed at a first inlet of the first cooler to monitor the temperature at the first inlet of the first cooler. The second thermometer is installed at the first port of the second cooler to monitor the temperature at the first port of the second cooler; The third thermometer is installed at the second port of the first cooler to monitor the temperature at the second port of the first cooler. The fourth thermometer is installed at the second port of the second cooler to monitor the temperature at the second port of the second cooler.

[0012] In some embodiments, the cooler cleaning system further includes a fifth thermometer, a sixth thermometer, a seventh thermometer, and an eighth thermometer. The first cooler includes an independent first channel and a second channel that exchange heat with each other. One end of the first channel is connected to a first inlet of the first cooler, and the other end of the first channel is connected to a second inlet of the first cooler. The second channel inlet is equipped with a fifth thermometer, and the second channel outlet is equipped with a sixth thermometer. The second cooler includes a third channel and a fourth channel that are independent and exchange heat with each other. One end of the third channel is connected to the first port of the second cooler, and the other end of the third channel is connected to the second port of the second cooler. A seventh thermometer is provided at the inlet of the fourth channel, and an eighth thermometer is provided at the outlet of the fourth channel.

[0013] In some embodiments, the cooler cleaning system further includes a fifth flow meter, a sixth flow meter, a seventh flow meter, and an eighth flow meter. The first cooler includes an independent first channel and a second channel that exchange heat with each other. One end of the first channel is connected to a first inlet of the first cooler, and the other end of the first channel is connected to a second inlet of the first cooler. The second channel inlet is equipped with a fifth flow meter, and the second channel outlet is equipped with a sixth flow meter. The second cooler includes a third channel and a fourth channel that are independent and exchange heat with each other. One end of the third channel is connected to the first port of the second cooler, and the other end of the third channel is connected to the second port of the second cooler. A seventh flow meter is provided at the inlet of the fourth channel, and an eighth flow meter is provided at the outlet of the fourth channel.

[0014] The cleaning method of this invention includes: Determine the ratio 'a' between the actual manufactured cooling area and the designed cooling area of ​​the first or second cooler. When 1≤a≤1.1, the need for automatic cleaning of the cooler is determined by measuring the inlet and outlet water temperature and flow rate of the cooling water in the first or second cooler, as well as the inlet and outlet oil temperature and flow rate. When a>1.1, the need for automatic cleaning of the cooler is determined by the flow rate of the cooling water at the inlet and outlet of the first or second cooler. During automatic cleaning, the main drain valve and the main water supply valve are closed, the automatic cleaning valve is opened, and at least one of the corresponding reagent addition component and particulate matter addition component is activated.

[0015] In some embodiments, when determining whether to flush the cooler by measuring the inlet and outlet water temperatures and flow rates of the cooling water in the first or second cooler, and the inlet and outlet oil temperatures and flow rates, the following determination steps are included: When qoil / qwater = ((t2-t1)C'W') / ((T1-T2)CW) ≥ 0.95, it is in normal condition, indicating that the cooler's cooling effect meets the design requirements. After the cooler automatically cleans, if the automatic control system detects and calculates that this value is greater than or equal to 0.95, the cleaning will stop. When 0.80≤qoil / qwater=((t2-t1)C'W') / ((T1-T2)CW)<0.95, it indicates that the cooling effect of the cooler is low and the operation should be monitored. When qoil / qwater = ((t2-t1)C'W') / ((T1-T2)CW) < 0.80, it is an abnormal state, indicating that the cooling effect of the cooler is seriously poor. Automatic cleaning should be performed on the abnormal first or second cooler. When both coolers simultaneously reach qoil / qwater = ((t2-t1)C'W') / ((T1-T2)CW) < 0.6, it is a fault state, indicating that there is an abnormally large object blocking the inside of the cooler and it cannot be cleaned automatically. Manual disassembly and cleaning are required. Wherein, q_oil: the heat absorbed by the oil, in kJ; q_water: the heat absorbed by the water, in kJ; T1: the inlet oil temperature, in degrees Celsius (°C); T2: the outlet oil temperature, in degrees Celsius (°C); t1: the inlet water temperature, in degrees Celsius (°C); t2: the outlet water temperature, in degrees Celsius (°C); C: the specific heat of the oil (kcal / kg°C); C': the specific heat of the water (kcal / kg°C); W: the oil flow rate (kg / h); W': the water flow rate (kg / h).

[0016] In some embodiments, including: When determining whether to flush the cooler by measuring the flow rate of the cooling water at the inlet and outlet of the first or second cooler, the following steps are included: When (Qactual - QDesign) / QDesign ≥ 0.95, it is in a normal state, indicating that the cooling effect of the cooler meets the design requirements; After the cooler is automatically cleaned, the cleaning process stops when the calculated value is greater than or equal to 0.95. When 0.80≤(Qactual-Qdesign) / Qdesign<0.95, it indicates that the cooling effect of the cooler is low and the operation needs to be monitored. When (Qactual - Qdesign) / Qdesign < 0.80, it is an abnormal state, indicating that the cooling effect of the cooler is seriously poor, and the automatic cleaning system will be activated. When both coolers simultaneously reach (Qactual - Qdesign) / Qdesign < 0.60, it is a fault state, indicating that there is an abnormally large object blocking the inside of the cooler and it cannot be cleaned automatically, so manual disassembly and cleaning are required. Q: Actual flow rate of cooling water in the cooler, in units (kg / h). Q: Design flow rate of cooling water for the cooler, in units (kg / h). Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a cooler cleaning system according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic flowchart of the cleaning method according to an embodiment of the present invention.

[0019] Figure label: Cooling water supply assembly 1, main water supply valve 2, first electric valve 3, second electric valve 4 First cooler 5, second cooler 6 Automatic cleaning valve 7, main drain valve 8, chemical dosing assembly 9, chemical storage tank 91, first pump 92, first chemical valve 93, second chemical valve 94 First water outlet pipe 10, first pipe 101, first water shut-off valve 102, second water outlet pipe 11, second pipe 111, second water shut-off valve 112 Particulate matter addition assembly 12, particulate matter storage tank 121, second pump 122, first addition valve 123, second addition valve 124, First drain valve 13, second drain valve 14. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below, and examples of these embodiments are provided in the appendix. Figure 1 and Figure 2 As shown in the appendix. See below for reference. Figure 1 and Figure 2 The described embodiments are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0021] An embodiment of the present invention includes a cooler cleaning system comprising: The system includes a cooling water supply assembly 1, a main water supply valve 2, a first electric valve 3, and a second electric valve 4. The first outlet of the cooling water supply assembly 1 is connected to one end of the main water supply valve 2, and the output end of the main water supply valve 2 is connected to one end of the first electric valve 3 and one end of the second electric valve 4. The first cooler 5 and the second cooler 6 are connected, with one end of the first electric valve 3 connected to the first port of the first cooler 5, and the other end of the second electric valve 4 connected to the first port of the second cooler 6. The system includes an automatic cleaning valve 7, a main drain valve 8, a reagent addition component 9, a first water outlet pipe 10, and a second water outlet pipe 11. The first port of the first water outlet pipe 10 is connected to the second outlet of the first cooler 5, and the first port of the second water outlet pipe 11 is connected to the second outlet of the second cooler 6. One end of the automatic cleaning valve 7 is connected to the second outlet of the cooling water supply component 1, and the other end of the automatic cleaning valve 7 is connected to the first port of the first water outlet pipe 10, the first port of the second water outlet pipe 11, and the input end of the main drain valve 8. The output end of the reagent addition component 9 is connected to both the first water outlet pipe 10 and the second water outlet pipe 11. The particulate matter additive component 12 is connected to the first port of the first water outlet pipe 10 and the second port of the second water outlet pipe 11, respectively. The first drain valve 13 and the second drain valve 14 are connected to the first port of the first cooler 5 and the second drain valve 14 are connected to the first port of the second cooler 6.

[0022] The cooler cleaning system of the present invention, by setting particulate matter addition component 12 and reagent addition component 9, facilitates automatic cleaning of the first cooler 5 or the second cooler 6, improves the stability of cooler operation, and extends the maintenance cycle.

[0023] When the first cooler 5 or the second cooler 6 is operating normally, the automatic cleaning valve 7 is closed. The first outlet of the cooling water supply assembly 1 is connected to the main water supply valve 2. The other end of the main water supply valve 2 is connected to the first electric valve 3 and the second electric valve 4. The other end of the first electric valve 3 is connected to the first port of the first cooler 5 to allow cooling water to flow in. The water then flows from the second port of the first cooler 5 to the first outlet pipe 10, and then through the first port of the first outlet pipe 10 to the drain valve 8 to discharge the cleaning system. The other end of the second electric valve 4 is connected to the first port of the second cooler 6 to allow cooling water to flow into the second cooler 6. The cooled water in the second cooler 6 is discharged through the first port of the second cooler 6, and then flows into the second outlet pipe 11, and is discharged through the drain valve 8.

[0024] When automatic cleaning is required, the main drain valve 8 and the main water supply valve 2 are closed, and the automatic cleaning valve 7 is opened. The cooling water supply assembly 1 supplies water to the first outlet pipe 10 and the second outlet pipe 11 through the automatic cleaning valve 7. Water then enters from the second port of the first cooler 5 and flows out from the first outlet of the first cooler 5 through the first drain valve 13, thereby automatically cleaning the first cooler 5. Water can also enter from the second port of the second cooler 6 and flow out from the first outlet of the second cooler through the second drain valve 14, thereby automatically cleaning the second cooler 6. Simultaneously, during automatic cleaning, at least one of the particulate matter addition assembly 12 and the chemical addition assembly 9 can be activated to automatically clean both the first cooler 5 and the second cooler 6.

[0025] The chemical additive component 9 supplies a chemical descaling agent to either the first or second inlet water pipe. During automatic cleaning, the descaling agent mixes with water from the first outlet water pipe 10 and enters the first cooler 5, or mixes with water from the second outlet water pipe 11 and enters the second cooler 6. The descaling agent can be sodium carbonate, sodium hydroxide, ammonia, citric acid, or hydrochloric acid.

[0026] The particulate matter addition component 12 supplies 0.3-0.5mm river sand or other particles to the first outlet pipe 10 or the second outlet pipe 11 to enhance the physical flushing effect. The chemical descaling agent storage tank is used to store acidic or alkaline cleaning agents to dissolve chemical scale. Through the synergistic effect of particulate matter and chemical agents, the cleaning effect is improved, thereby improving the maintenance efficiency and operational reliability of the cooler system.

[0027] In some embodiments, the first water outlet pipe 10 includes a first pipe 101 and a first water shut-off valve 102. One end of the first pipe 101 is connected to the second port of the first cooler 5, and the other end of the first pipe 101 is connected to one end of the first water shut-off valve 102. The other end of the first water shut-off valve 102 is connected to the main drain valve 8. The second water outlet pipe 11 includes a second pipe 111 and a second water shut-off valve 112. One end of the second pipe 111 is connected to the second port of the second cooler 6, and the other end of the second pipe 111 is connected to one end of the second water shut-off valve. The other end of the second water shut-off valve is connected to the main drain valve 8 and the automatic cleaning valve 7, respectively. The drug addition assembly 9 includes a drug storage tank 91, a first pump 92, a first drug valve 93, and a second drug valve 94. The input end of the first pump 92 is connected to the drug storage tank 91, and the output end of the first pump 92 is connected to the first drug valve 93 and the second drug valve 94 respectively. The first drug valve 93 is connected to the first pipe 101, and one end of the second drug valve 94 is connected to the second pipe 111.

[0028] Specifically, the chemical storage tank 91 is suitable for storing alkaline or acidic descaling agents. There can be multiple chemical addition components 9, with one part storing and supplying alkaline descaling agents and another part storing and supplying acidic descaling agents.

[0029] The first pump 92 is adapted to output the medicine from the medicine storage tank 91, and the first medicine valve 93 and the second medicine valve 94 are opened or closed to input the medicine into the first pipe 101 or the second pipe 111. Meanwhile, the first water shut-off valve 102 and the second water shut-off valve 112 are provided so that the first water outlet pipe 10 or the second water outlet pipe 11 can be opened or closed separately during automatic cleaning to achieve separate cleaning of the first cooler 5 and the second cooler 6. Of course, the first water shut-off valve 102 and the second water shut-off valve 112 can also be opened at the same time to clean the first cooler 5 and the second cooler 6 simultaneously, increasing the flexibility during flushing.

[0030] In some embodiments, the particulate matter addition assembly 12 includes a particulate matter storage tank 121, a second pump 122, a first addition valve 123, and a second addition valve 124. The particulate matter storage tank 121 is connected to the input end of the second pump 122, and the output end of the second pump 122 is connected to the first addition valve 123 and the second addition valve 124. One end of the first addition valve 123 is connected to the first pipe 101, and one end of the second addition valve 124 is connected to the second pipe 111. By setting the first addition valve 123 and the second addition valve 124, the first water outlet pipe 10 or the second water outlet pipe 11 can be opened or closed separately during automatic cleaning to achieve separate cleaning of the first cooler 5 and the second cooler 6. Of course, the first addition valve 123 and the second addition valve 124 can also be opened simultaneously to clean the first cooler 5 and the second cooler 6 at the same time, increasing the flexibility during rinsing.

[0031] In some embodiments, the cooler cleaning system further includes a first flow meter, a second flow meter, a third flow meter, and a fourth flow meter. The first flow meter is disposed at the first inlet of the first cooler 5 to monitor the flow rate at the first inlet of the first cooler 5. A second flow meter is installed at the first port of the second cooler 6 to monitor the flow rate at the first port of the second cooler 6; A third flow meter is installed at the second port of the first cooler 5 to monitor the flow rate at the second port of the first cooler 5. A fourth flow meter is installed at the second port of the second cooler 6 to monitor the flow rate at the second port of the second cooler 6.

[0032] The flow rate of cooling water entering and exiting the first cooler 5 and the second cooler 6 is used to determine whether a blockage has occurred, so as to facilitate cleaning. For example, for the ratio 'a' between the actual manufactured cooling area and the designed cooling area of ​​the first cooler 5, when 'a' > 1.1, the flow rate of cooling water entering and exiting the first cooler 5 or the second cooler 6 is used to determine whether the cooler needs to be automatically cleaned.

[0033] Furthermore, the cooler cleaning system also includes a first thermometer, a second thermometer, a third thermometer, and a fourth thermometer. The first thermometer is installed at the first inlet of the first cooler 5 to monitor the temperature at the first inlet of the first cooler 5. A second thermometer is installed at the first port of the second cooler 6 to monitor the temperature at the first port of the second cooler 6; A third thermometer is installed at the second port of the first cooler 5 to monitor the temperature at the second port of the first cooler 5. A fourth thermometer is installed at the second port of the second cooler 6 to monitor the temperature at the second port of the second cooler 6.

[0034] The cooling effect is monitored by determining the temperature and flow rate of the cooling water entering and exiting the first cooler 5 and the second cooler 6, so as to facilitate cleaning.

[0035] In some embodiments, the cooler cleaning system further includes a fifth thermometer, a sixth thermometer, a seventh thermometer, and an eighth thermometer. The first cooler 5 includes an independent first channel and a second channel that exchange heat with each other. One end of the first channel is connected to the first inlet of the first cooler 5, and the other end of the first channel is connected to the second inlet of the first cooler 5. The second channel inlet is equipped with a fifth thermometer, and the second channel outlet is equipped with a sixth thermometer. The second cooler 6 includes a third channel and a fourth channel that are independent and exchange heat with each other. One end of the third channel is connected to the first port of the second cooler 6, and the other end of the third channel is connected to the second port of the second cooler 6. A seventh thermometer is installed at the inlet of the fourth channel, and an eighth thermometer is installed at the outlet of the fourth channel.

[0036] The cooler cleaning system also includes a fifth flow meter, a sixth flow meter, a seventh flow meter, and an eighth flow meter. The first cooler 5 includes an independent first channel and a second channel that exchange heat with each other. One end of the first channel is connected to the first inlet of the first cooler 5, and the other end of the first channel is connected to the second inlet of the first cooler 5. The second channel inlet is equipped with a fifth flow meter, and the second channel outlet is equipped with a sixth flow meter. The second cooler 6 includes a third channel and a fourth channel that are independent and exchange heat with each other. One end of the third channel is connected to the first port of the second cooler 6, and the other end of the third channel is connected to the second port of the second cooler 6. The inlet of the fourth channel is equipped with a seventh flow meter, and the outlet of the fourth channel is equipped with an eighth flow meter.

[0037] The third and first channels are used for the input and output of coolant. The oil in the first channel exchanges heat with the cooling water in the second channel, and the oil in the third channel exchanges heat with the cooling water in the fourth channel.

[0038] By setting a fifth, sixth, seventh, and eighth flow meter to monitor the temperature and flow rate of the inlet and outlet oil of the first cooler 5 or the second cooler 6, and the ratio 'a' between the actual manufactured cooling area and the designed cooling area of ​​the first cooler 5, when 1 ≤ a ≤ 1.1, the system determines whether to automatically clean the cooler by monitoring the inlet and outlet water temperature and flow rate of the cooling water and the temperature and flow rate of the inlet and outlet oil of the first cooler 5 or the second cooler 6.

[0039] The cleaning method of this invention includes: Determine the ratio 'a' between the actual manufactured cooling area and the designed cooling area of ​​the first cooler 5 or the second cooler 6. When 1≤a≤1.1, the need for automatic cleaning of the cooler is determined by measuring the inlet and outlet water temperature and flow rate of the cooling water in the first cooler 5 or the second cooler 6, as well as the inlet and outlet oil temperature and flow rate. When a>1.1, the need for automatic cleaning of the cooler is determined by the flow rate of the cooling water at the inlet and outlet of the first cooler 5 or the second cooler 6. During automatic cleaning, the main drain valve 8 and the main water supply valve 2 are closed, and at least one of the corresponding agent addition component 9 and particulate matter addition component 12 is turned on.

[0040] Specifically, the inlet and outlet oil temperature and flow rate refer to the temperature and flow rate of the oil entering and exiting the second or fourth channel.

[0041] The inlet and outlet water temperatures and flow rates of cooling water refer to the inlet and outlet temperatures and flow rates of the cooling water.

[0042] To ensure cooling performance and prevent discrepancies between theory and practice, as well as for safety reasons, cooler designers and manufacturers often incorporate a margin of safety in the actual production process, for example, 10% more than the theoretical design.

[0043] When a > 1.1, the cooling effect of the first cooler 5 or the second cooler 6 is good, and it is only necessary to monitor the flow rate of cooling water entering and leaving the first cooler 5 and the second cooler 6. That is, ensuring that the flow rate of cooling water entering and leaving the first cooler 5 and the second cooler 6 is within the expected range is sufficient to cool the oil.

[0044] When 1≤a≤1.1, the inlet and outlet water temperatures and flow rates of the cooling water for the first cooler 5 or the second cooler 6, as well as the inlet and outlet oil temperatures and flow rates, are used to determine whether the cooler should be automatically cleaned in order to avoid a situation where the cooling water flow rate is sufficient but the cooling effect is insufficient.

[0045] It should be noted that in actual operation, the first cooler 5 and the second cooler 6 are redundantly configured, that is, only one cooler is used and the other is on standby. If one of the coolers fails, the other standby cooler will be turned on.

[0046] The cleaning method of this invention adopts different cleaning standards for coolers with different ratios between actual manufactured cooling area and designed cooling area to ensure the cooling effect of different types of coolers. Then, different types of coolers are flushed in a timely manner to improve the stability of cooler operation.

[0047] Furthermore, when determining whether to flush the cooler by measuring the inlet and outlet water temperatures and flow rates of the cooling water in the first cooler 5 or the second cooler 6, and the inlet and outlet oil temperatures and flow rates, the following judgment steps are included: When qoil / qwater = ((t2-t1)C'W') / ((T1-T2)CW) ≥ 0.95, it is in normal condition, indicating that the cooler's cooling effect meets the design requirements. After the cooler automatically cleans, if the automatic control system detects and calculates that this value is greater than or equal to 0.95, the cleaning will stop. When 0.80≤qoil / qwater=((t2-t1)C'W') / ((T1-T2)CW)<0.95, it indicates that the cooling effect of the cooler is low and the operation should be monitored. When qoil / qwater = ((t2-t1)C'W') / ((T1-T2)CW) < 0.80, it is an abnormal state, indicating that the cooling effect of the cooler is seriously poor. The first cooler 5 or the second cooler 6 that is abnormal will be automatically cleaned. When both coolers simultaneously reach a value of q_oil / q_water = ((t2-t1)C'W') / ((T1-T2)CW) < 0.6, it indicates a fault state. This signifies that a large, abnormally large object has blocked the cooler and cannot be cleaned automatically, requiring manual disassembly and cleaning. In other words, if q_oil / q_water < 0.6 is found when the first cooler is running, the other cooler will also show the same value after startup. Cleaning ends when 0.80 ≤ q_oil / q_water.

[0048] Wherein, q_oil: the heat absorbed by the oil, in kJ; q_water: the heat absorbed by the water, in kJ; T1: the inlet oil temperature, in degrees Celsius (°C); T2: the outlet oil temperature, in degrees Celsius (°C); t1: the inlet water temperature, in degrees Celsius (°C); t2: the outlet water temperature, in degrees Celsius (°C); C: the specific heat of the oil (kcal / kg°C); C': the specific heat of the water (kcal / kg°C); W: the oil flow rate (kg / h); W': the water flow rate (kg / h).

[0049] Furthermore, when determining whether to flush the cooler by measuring the flow rate of cooling water at the inlet and outlet of the first cooler 5 or the second cooler 6, the following steps are included: When (Qactual - QDesign) / QDesign ≥ 0.95, it is considered a normal state, indicating that the cooler's cooling effect meets the design requirements. After the cooler is automatically cleaned, the cleaning process stops when the calculated value is greater than or equal to 0.95. When 0.80≤(Qactual-Qdesign) / Qdesign<0.95, it indicates that the cooling effect of the cooler is low and the operation needs to be monitored. When (Qactual - Qdesign) / Qdesign < 0.80, it is an abnormal state, indicating that the cooling effect of the cooler is seriously poor, and the automatic cleaning system will be activated. When both coolers simultaneously reach (actual Q - design Q) / Q design < 0.60, it indicates a fault state, signifying a large, abnormally large object blocking the cooler's interior and preventing automatic cleaning; manual disassembly and cleaning are required. If (actual Q - design Q) / Q design < 0.60 is found when the first cooler is running, the other cooler will also show this value upon startup. Cleaning ends when 0.80 ≤ (actual Q - design Q) / Q design is determined.

[0050] Wherein, Qactual: the actual flow rate of the cooler water, in units (kg / h), and Qdesign: the design flow rate of the cooler water, in units (kg / h).

[0051] The cleaning method of this invention adopts a differentiated cleaning strategy for the first cooler 5 and the second cooler 6 (which are redundantly configured, with only one normally in use and the other as a backup), based on the ratio (a) of their actual manufactured cooling area to their designed cooling area: When 1≤a≤1.1, the system comprehensively judges whether to perform automatic cleaning by considering the inlet and outlet temperatures and flow rates of the cooling water and the inlet and outlet temperatures and flow rates of the oil, in order to avoid the problem that the cooling water flow rate meets the standard but the cooling effect is insufficient. When a>1.1, it is possible to determine whether automatic cleaning is needed simply by monitoring the inlet and outlet flow rates of cooling water. Ensuring that the flow rate is within the expected range can meet the oil cooling requirements. By adopting appropriate cleaning judgment standards for coolers with different manufacturing deviations, the cooling effect of various coolers can be accurately guaranteed, timely flushing and maintenance can be achieved, and the stability of cooler operation can be improved.

[0052] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A cooler cleaning system, characterized in that, include: The system includes a cooling water supply assembly, a main water supply valve, a first electric valve, and a second electric valve. The first outlet of the cooling water supply assembly is connected to one end of the main water supply valve, and the output end of the main water supply valve is connected to one end of the first electric valve and one end of the second electric valve. A first cooler and a second cooler, wherein the other end of the first electric valve is connected to the first port of the first cooler, and the other end of the second electric valve is connected to the first port of the second cooler. The system includes an automatic cleaning valve, a main drain valve, a reagent addition component, a first water outlet pipe, and a second water outlet pipe. The first outlet pipe has a first port connected to the second outlet of the first cooler, and the first outlet pipe has a first port connected to the second outlet of the second cooler. One end of the automatic cleaning valve is connected to the second outlet of the cooling water supply component, and the other end of the automatic cleaning valve is connected to the first port of the first water outlet pipe, the first port of the second water outlet pipe, and the input end of the main drain valve. The output end of the reagent addition component is connected to the first water outlet pipe and the second water outlet pipe, respectively. A particulate matter addition component, wherein the output end of the particulate matter addition component is connected to the first port of the first water outlet pipe and the second port of the second water outlet pipe respectively. A first drain valve and a second drain valve, wherein the first drain valve is connected to the first port of the first cooler and the second drain valve is connected to the first port of the second cooler.

2. The cooler cleaning system according to claim 1, characterized in that, The first water outlet pipeline includes a first pipe and a first water shut-off valve. One end of the first pipe is connected to the second port of the first cooler, and the other end of the first pipe is connected to one end of the first water shut-off valve. The other end of the first water shut-off valve is connected to the main drain valve. The second water outlet pipeline includes a second pipe and a second water shut-off valve. One end of the second pipe is connected to the second port of the second cooler, and the other end of the second pipe is connected to one end of the second water shut-off valve. The other end of the second water shut-off valve is connected to the main drain valve and the automatic cleaning valve, respectively. The drug addition assembly includes a drug storage tank, a first pump, a first drug valve, and a second drug valve. The input end of the first pump is connected to the drug storage tank, and the output end of the first pump is connected to the first drug valve and the second drug valve. The first drug valve is connected to the first pipe, and one end of the second drug valve is connected to the second pipe.

3. The cooler cleaning system according to claim 2, characterized in that, The particulate matter addition assembly includes a particulate matter storage tank, a second pump, a first addition valve, and a second addition valve. The particulate matter storage tank is connected to the input end of the second pump, and the output end of the second pump is connected to the first addition valve and the second addition valve. One end of the first addition valve is connected to the first pipe, and one end of the second addition valve is connected to the second pipe.

4. The cooler cleaning system according to claim 3, characterized in that, It also includes a first flow meter, a second flow meter, a third flow meter, and a fourth flow meter. The first flow meter is installed at the first inlet of the first cooler to monitor the flow rate at the first inlet of the first cooler. The second flow meter is installed at the first inlet of the second cooler to monitor the flow rate at the first inlet of the second cooler; The third flow meter is installed at the second port of the first cooler to monitor the flow rate at the second port of the first cooler. The fourth flow meter is installed at the second port of the second cooler to monitor the flow rate at the second port of the second cooler.

5. The cooler cleaning system according to claim 3, characterized in that, It also includes a first thermometer, a second thermometer, a third thermometer, and a fourth thermometer. The first thermometer is installed at the first inlet of the first cooler to monitor the temperature at the first inlet of the first cooler. The second thermometer is installed at the first port of the second cooler to monitor the temperature at the first port of the second cooler; The third thermometer is installed at the second port of the first cooler to monitor the temperature at the second port of the first cooler. The fourth thermometer is installed at the second port of the second cooler to monitor the temperature at the second port of the second cooler.

6. The cooler cleaning system according to claim 3, characterized in that, It also includes a fifth thermometer, a sixth thermometer, a seventh thermometer, and an eighth thermometer. The first cooler includes an independent first channel and a second channel that exchange heat with each other. One end of the first channel is connected to a first inlet of the first cooler, and the other end of the first channel is connected to a second inlet of the first cooler. The second channel inlet is equipped with a fifth thermometer, and the second channel outlet is equipped with a sixth thermometer. The second cooler includes a third channel and a fourth channel that are independent and exchange heat with each other. One end of the third channel is connected to the first port of the second cooler, and the other end of the third channel is connected to the second port of the second cooler. A seventh thermometer is provided at the inlet of the fourth channel, and an eighth thermometer is provided at the outlet of the fourth channel.

7. The cooler cleaning system according to claim 3, characterized in that, It also includes the fifth flow meter, the sixth flow meter, the seventh flow meter, and the eighth flow meter. The second channel inlet is equipped with a fifth flow meter, and the second channel outlet is equipped with a sixth flow meter. One end of the third channel is connected to the first port of the second cooler, and the other end of the third channel is connected to the second port of the second cooler. The inlet of the fourth channel is equipped with a seventh flow meter, and the outlet of the fourth channel is equipped with an eighth flow meter.

8. A cleaning method, characterized in that, include: Determine the ratio 'a' between the actual manufactured cooling area and the designed cooling area of ​​the first cooler. When 1≤a≤1.1, the need for automatic cleaning of the cooler is determined by measuring the inlet and outlet water temperature and flow rate of the cooling water in the first or second cooler, as well as the inlet and outlet oil temperature and flow rate. When a>1.1, the need for automatic cleaning of the cooler is determined by the flow rate of the cooling water at the inlet and outlet of the first or second cooler. During automatic cleaning, the main drain valve and the main water supply valve are closed, the automatic cleaning valve is opened, and at least one of the agent addition component and the particulate matter addition component is turned on.

9. The cleaning method according to claim 8, characterized in that, include: When determining whether to flush the cooler by measuring the inlet and outlet water temperatures and flow rates of the cooling water in the first or second cooler, and the inlet and outlet oil temperatures and flow rates, the following judgment steps are included: When qoil / qwater = ((t2-t1)C'W') / ((T1-T2)CW)≥0.95, it is in normal condition, indicating that the cooling effect of the cooler meets the design requirements. After the cooler is automatically cleaned, the automatic control system detects and calculates that the value is greater than or equal to 0.95, and then stops cleaning. When 0.80≤qoil / qwater=((t2-t1)C'W') / ((T1-T2)CW)<0.95, it indicates that the cooling effect of the cooler is low and the operation should be monitored. When qoil / qwater = ((t2-t1)C'W') / ((T1-T2)CW) < 0.80, it is an abnormal state, indicating that the cooling effect of the cooler is seriously poor. Automatic cleaning should be performed on the abnormal first or second cooler. When both coolers simultaneously reach qoil / qwater = ((t2-t1)C'W') / ((T1-T2)CW) < 0.6, it is a fault state, indicating that there is an abnormally large object blocking the inside of the cooler and it cannot be cleaned automatically. Manual disassembly and cleaning are required. Wherein, q_oil: the heat absorbed by the oil, in kJ; q_water: the heat absorbed by the water, in kJ; T1: the inlet oil temperature, in degrees Celsius (°C); T2: the outlet oil temperature, in degrees Celsius (°C); t1: the inlet water temperature, in degrees Celsius (°C); t2: the outlet water temperature, in degrees Celsius (°C); C: the specific heat of the oil (kcal / kg°C); C': the specific heat of the water (kcal / kg°C); W: the oil flow rate (kg / h); W': the water flow rate (kg / h).

10. The cleaning method according to claim 8, characterized in that, include: When determining whether to flush the cooler by measuring the flow rate of the cooling water at the inlet and outlet of the first or second cooler, the following steps are included: When (Qactual - QDesign) / QDesign ≥ 0.95, it is in a normal state, indicating that the cooling effect of the cooler meets the design requirements; After the cooler is automatically cleaned, the cleaning process stops when the calculated value is greater than or equal to 0.

95. When 0.80≤(Qactual-Qdesign) / Qdesign<0.95, it indicates that the cooling effect of the cooler is low and the operation needs to be monitored. When (Qactual - Qdesign) / Qdesign < 0.80, it is an abnormal state, indicating that the cooling effect of the cooler is seriously poor, and the automatic cleaning system will be activated. When both coolers simultaneously reach (Qactual - Qdesign) / Qdesign < 0.60, it is a fault state, indicating that there is an abnormally large object blocking the inside of the cooler and it cannot be cleaned automatically, so manual disassembly and cleaning are required. Q: Actual flow rate of cooling water in the cooler, in units (kg / h). Q: Design flow rate of cooling water for the cooler, in units (kg / h).

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