Industrial water backwashing system of steam turbine plate type oil cooler

Abstract

The invention discloses an industrial water backwashing system of a steam turbine plate type oil cooler, the industrial water backwashing system of the steam turbine plate type oil cooler comprises an oil cooler, a monitoring assembly and a backwashing assembly, the oil cooler is arranged in a steam turbine lubricating oil cooling system and is provided with a cooling cavity, a first port and a second port, and the first port and the second port are both communicated with the cooling cavity; the first port of the oil cooler is suitable for introducing cooling liquid so as to cool lubricating oil in the steam turbine, the cooling liquid subjected to heat exchange in the oil cooler is discharged through the second port, the monitoring assembly is connected with the first port and the second port and used for monitoring the pressure between the first port and the second port, and the backflushing assembly is communicated with the second port. The device has the advantages of simple structure, high cleaning efficiency and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of steam turbines, in particular to an industrial water backwashing system for a plate-type oil cooler of a steam turbine. Background Art

[0002] Steam turbine oil coolers in thermal power plants across the country typically use circulating water as a cooling medium. During operation, due to factors such as low cooling water pressure (no more than 0.23 MPa), excessive hardness, high impurity content, temperature changes, and water flow rate, calcium and magnesium ions in the cooling water can form precipitates such as calcium carbonate and magnesium carbonate under certain conditions, leading to scaling of the oil cooler. Cooling water may contain impurities such as silt, rust, and microorganisms, which accumulate in the oil cooler and interact with other substances in the water, easily forming scale. Impurities and dirt in the cooling water will gradually deposit on the heat exchange plates of the oil cooler, reducing heat exchange efficiency and affecting the normal operation of the steam turbine. The cooling water is affected by resistance inside the oil cooler, causing the cooling water flow rate to slow down, making it more prone to scaling and blockage.

[0003] In the related art, the oil cooler is manually cleaned during shutdown, which is time-consuming, labor-intensive, and costly, has low cleaning efficiency, and affects the normal operation of the unit. Summary of the Invention

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

[0005] To this end, an embodiment of the present invention provides an industrial water backwashing system for a steam turbine plate oil cooler, which has high cleaning efficiency, saves time and effort, and ensures normal operation of the unit.

[0006] An industrial water backwashing system for a plate-type oil cooler for a steam turbine according to an embodiment of the present invention includes: a steam turbine; an oil cooler, the oil cooler being arranged in the steam turbine lubricating oil cooling system and having a cooling chamber, a first port, and a second port, the first port and the second port both being in communication with the cooling chamber, the first port of the oil cooler being adapted to admit coolant to cool the lubricating oil in the steam turbine, and the coolant after heat exchange in the oil cooler being discharged through the second port; a monitoring component and a backwashing component, the monitoring component being connected to the first port and the second port and configured to monitor a pressure between the first port and the second port, the backwashing component being in communication with the second port, the industrial water backwashing system for the plate-type oil cooler for a steam turbine having a first state and a second state, wherein in the first state, the oil cooler operates to cool the lubricating oil in the steam turbine, and in the second state, when the monitoring component detects that the pressure between the first port and the second port exceeds a preset range, the backwashing component is adapted to admit a flushing liquid to flush the cooling chamber to clean scale in the cooling chamber.

[0007] The industrial water backwash system of the turbine plate oil cooler in the embodiment of the present invention is provided with a backwash component, which uses industrial water to backwash the oil cooler through the backwash component, thereby effectively removing scale and impurities inside the oil cooler without the need for manual cleaning, reducing cleaning time, and improving cleaning efficiency, thereby ensuring the normal operation of the unit.

[0008] In some embodiments, the industrial water backwash system of the turbine plate oil cooler also includes a first connecting piece and a second connecting piece, the first connecting piece is connected to the first port, and the second connecting piece is connected to the second port. In the first state, the first connecting piece is suitable for passing coolant, and the coolant after heat exchange in the oil cooler flows out through the second connecting piece. In the second state, the second connecting piece is suitable for passing flushing liquid, and the flushing liquid in the oil cooler flows out through the first connecting piece.

[0009] In some embodiments, the first connecting member includes a first tube, a second tube and a third tube, the first tube is connected to the first port, in the first state, the second tube is connected to the first tube, and the second tube is suitable for passing coolant so that the coolant flows into the oil cooler through the second tube and the first tube, in the second state, the third tube is connected to the first tube, so that the cleaning water in the oil cooler is discharged through the third tube and the first tube, the second connecting member includes a fourth tube, a fifth tube and a sixth tube, the fourth tube is connected to the second port, in the first state, the fifth tube is connected to the fourth tube, so that the coolant in the oil cooler is discharged through the fifth tube and the fourth tube, in the second state, the sixth tube is connected to the fourth tube, and the sixth tube is suitable for passing clean water so that the clean water cleans the cooling cavity through the sixth tube and the fourth tube.

[0010] In some embodiments, the industrial water backwash system of the turbine plate oil cooler also includes a first valve and a second valve, the first valve is arranged in the second pipe and connected to the second pipe, the second valve is arranged in the third pipe and connected to the third pipe, in the first state, the first valve is open and the second valve is closed, in the second state, the first valve is closed and the second valve is open.

[0011] In some embodiments, the industrial water backwash system of the turbine plate oil cooler also includes a third valve and a fourth valve, the third valve is arranged in the fifth pipe and connected to the fifth pipe, the fourth valve is arranged in the sixth pipe and connected to the sixth pipe, in the first state, the third valve is open and the fourth valve is closed, in the second state, the third valve is closed and the fourth valve is open.

[0012] In some embodiments, the monitoring component includes a first pressure sensor and a second pressure sensor, the first pressure sensor and the second pressure sensor are respectively arranged in the first port and the second port, the first pressure sensor is used to monitor the pressure of the fluid in the first port, and the second pressure sensor is used to monitor the pressure of the fluid in the second port, so that when the pressure difference between the first pressure sensor and the second pressure sensor is less than a preset value, the industrial water backwash system of the steam turbine plate oil cooler is in the first state, and when the pressure difference between the first pressure sensor and the second pressure sensor is greater than a preset value, the industrial water backwash system of the steam turbine plate oil cooler is in the second state.

[0013] In some embodiments, the industrial water backwash system of the turbine plate oil cooler also includes a first storage tank. In the first state, the first storage tank is connected to the second port of the oil cooler so that the cooled coolant in the oil cooler flows into the first storage tank.

[0014] In some embodiments, the industrial water backwash system of the turbine plate oil cooler further includes a second storage tank. In the second state, the second storage tank is connected to the first port of the oil cooler so that the cleaned flushing liquid in the oil cooler flows into the second storage tank.

[0015] In some embodiments, the industrial water backwash system for the steam turbine plate oil cooler further includes an alarm component connected to the monitoring component so that when the pressure detected by the monitoring component is greater than a preset value, the alarm component issues an alarm.

[0016] In some embodiments, the industrial water backwash system of the turbine plate oil cooler further includes a third state, so that when the monitoring component detects that the pressure at the second port of the oil cooler is greater than 0.4 MPa, the backwash component is disconnected from the second port of the oil cooler. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The invention is a schematic structural diagram of an industrial water backwash system for a plate-type oil cooler of a steam turbine according to an embodiment of the present invention.

[0018] 100. Industrial water backwash system for a steam turbine plate oil cooler; 1. Oil cooler; 2. Monitoring assembly; 21. First pressure sensor; 22. Second pressure sensor; 3. Backwash assembly; 31. First connecting piece; 311. First pipe; 312. Second pipe; 313. Third pipe; 32. Second connecting piece; 321. Fourth pipe; 322. Fifth pipe; 323. Sixth pipe; 4. First valve; 5. Second valve; 6. Third valve; 7. Fourth valve. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0020] The following describes an industrial water backwashing system 100 for a plate-type oil cooler of a steam turbine according to an embodiment of the present invention with reference to the accompanying drawings.

[0021] like Figure 1 As shown, the industrial water backwashing system 100 for a plate-type oil cooler of a steam turbine according to an embodiment of the present invention includes a steam turbine, an oil cooler 1 , a monitoring component 2 and a backwashing component 3 .

[0022] The oil cooler 1 is provided in the turbine lubricating oil cooling system and has a cooling cavity, a first port and a second port. The first port and the second port are both connected to the cooling cavity. The first port of the oil cooler 1 is suitable for introducing coolant to cool the lubricating oil in the turbine. The coolant after heat exchange in the oil cooler 1 is discharged through the second port. Specifically, Figure 1 As shown, the oil cooler 1 is integrated into the steam turbine lubricating oil cooling system. Its main body is a closed heat exchange container, with a cooling chamber within it. The oil cooler 1 has a first port and a second port, respectively, at its left and right ends. Both ports are directly connected to the cooling chamber, forming a coolant circulation channel. The first port serves as the coolant inlet, connected to an external cooling water supply line. Cooling water enters the cooling chamber through this port, exchanges heat with the lubricating oil within the steam turbine, absorbing heat from the lubricating oil and cooling it. The second port serves as the coolant outlet, connected to a drainage line. The cooled water (with an increased temperature) is discharged through this port to the plant's drainage system after heat exchange. This allows the oil cooler 1 to maintain the lubricating oil temperature within a reasonable range (e.g., 40-50°C) through the continuous circulation of cooling water, preventing lubrication performance degradation or equipment damage caused by excessively high oil temperatures.

[0023] The monitoring component 2 is connected to the first port and the second port, and is used to monitor the pressure between the first port and the second port. The backwash component 3 is connected to the second port. The industrial water backwash system 100 of the turbine plate oil cooler has a first state and a second state. In the first state, the oil cooler 1 works to cool the lubricating oil in the turbine. In the second state, when the monitoring component 2 detects that the pressure between the first port and the second port exceeds a preset range, the backwash component 3 is suitable for passing a flushing liquid to flush the cooling chamber to clean the scale in the cooling chamber. Specifically, as Figure 1As shown, the monitoring component 2 is positioned between the first and second ports, monitoring the pressure of the liquid in the first and second ports. The first state is cooling mode, during which the oil cooler 1 operates normally, with flushing liquid (cooling water) flowing in from the first port and out from the second port, continuously cooling the lubricating oil. At this time, the backflush component 3 is in standby mode. The second state is backflush mode. When the monitoring component 2 detects a pressure difference between the first and second ports greater than a preset value (ΔP ≥ 0.01 MPa), the system automatically switches to backflush mode, with the flushing liquid backflushing the cooling chamber. Once the flush is complete, the system returns to the first state.

[0024] The industrial water backwashing system 100 of the turbine plate oil cooler of the embodiment of the present invention is provided with a monitoring component 2 and a backwashing component 3. The pressure difference in the oil cooler 1 is monitored by the monitoring component 2, and the oil cooler 1 is backwashed with industrial water by the backwashing component 3. This can effectively remove scale and impurities inside the oil cooler 1, improve the cooling effect of the oil cooler 1, and extend the service life of the oil cooler 1. Compared with the related art, manual cleaning is not required, the cleaning time is reduced, the cleaning efficiency is high, and the normal operation of the unit is ensured.

[0025] In some embodiments, the industrial water backwash system 100 for the steam turbine plate oil cooler further includes a first connecting piece 31 and a second connecting piece 32. The first connecting piece 31 is connected to the first port, and the second connecting piece 32 is connected to the second port. In a first state, the first connecting piece 31 is suitable for introducing coolant, and the coolant after heat exchange in the oil cooler 1 flows out through the second connecting piece 32. In a second state, the second connecting piece 32 is suitable for introducing flushing liquid, and the flushing liquid in the oil cooler 1 flows out through the first connecting piece 31. Specifically, Figure 1 As shown, one end of the first connecting piece 31 is connected to the first port of the oil cooler 1, and one end of the second connecting piece 32 is connected to the second port of the oil cooler 1. In the first state, the other end of the first connecting piece 31 is connected to the external industrial water supply pipeline through a quick connector to ensure that the coolant enters the cooling chamber of the oil cooler 1 at a stable flow rate and flows out through the second connecting piece 32. In the second state, the other end of the first connecting piece 31 is connected to the factory drainage system through a quick connector to ensure that the flushing liquid flows into the cooling chamber of the oil cooler 1, and the flushing liquid flushes the cooling chamber and is discharged through the first connecting piece 31.

[0026] In some embodiments, the first connecting member 31 includes a first tube 311, a second tube 312, and a third tube 313. The first tube 311 is connected to the first port. In a first state, the second tube 312 is connected to the first tube 311. The second tube 312 is suitable for passing coolant so that the coolant flows into the oil cooler 1 through the second tube 312 and the first tube 311. In a second state, the third tube 313 is connected to the first tube 311 so that the clean water in the oil cooler 1 is discharged through the third tube 313 and the first tube 311. Specifically, Figure 1 As shown, the first connecting member 31 adopts a three-way pipe integrated design and is composed of a first pipe 311, a second pipe 312 and a third pipe 313. The first pipe 311 is a main flow pipe. One end of the first pipe 311 is connected to the first port of the oil cooler 1 by welding or a clamp. The first pipe 311 serves as a common channel for coolant and flushing liquid. The second pipe 312 is a coolant input pipe. The two ends of the second pipe 312 are respectively connected to the first pipe 311 and the industrial water supply main pipe for delivering coolant to the oil cooler 1 in the first state. The third pipe 313 is a cleaning water discharge pipe. The third pipe 313 and the first pipe 311 are connected to the factory drainage system and are used to discharge flushing wastewater in the oil cooler 1 in the second state.

[0027] In some embodiments, the second connecting member 32 includes a fourth tube 321, a fifth tube 322, and a sixth tube 323. The fourth tube 321 is connected to the second port. In a first state, the fifth tube 322 is connected to the fourth tube 321, so that the coolant in the oil cooler 1 is discharged through the fifth tube 322 and the fourth tube 321. In a second state, the sixth tube 323 is connected to the fourth tube 321, and the sixth tube 323 is suitable for introducing cleaning water so that the cleaning water cleans the cooling cavity through the sixth tube 323 and the fourth tube 321. Specifically, Figure 1 As shown, the second connecting piece 32 adopts a three-way split-flow structure design and is composed of a fourth pipe 321, a fifth pipe 322 and a sixth pipe 323. The fourth pipe 321 is a connecting pipe for the second port of the oil cooler 1. One end of the fourth pipe 321 is fixedly connected to the oil cooler 1 by welding or a sleeve-type joint. The fifth pipe 322 is a coolant discharge pipe and is connected to the fourth pipe 321, and is used to discharge the coolant after heat exchange in the first state. The sixth pipe 323 is a backwashing liquid input pipe and is connected to the fourth pipe 321. The sixth pipe 323 is connected to the industrial water backwashing water supply pipeline and is used to inject high-pressure flushing liquid into the oil cooler 1 in the second state.

[0028] In some embodiments, the industrial water backwash system 100 for the steam turbine plate oil cooler further includes a first valve 4 and a second valve 5. The first valve 4 is disposed in the second pipe 312 and communicates with the second pipe 312. The second valve 5 is disposed in the third pipe 313 and communicates with the third pipe 313. In a first state, the first valve 4 is open and the second valve 5 is closed. In a second state, the first valve 4 is closed and the second valve 5 is open. Specifically, Figure 1As shown, both the first valve 4 and the second valve 5 can be solenoid valves. The first valve 4 is positioned within and connected to the second tube 312, while the second valve 5 is positioned within and connected to the third tube 313. In a first state, the first valve 4 is fully open, ensuring that coolant from the external industrial water supply line can flow smoothly through the second tube 312 into the first tube 311 at a stable flow rate, and then into the cooling chamber of the oil cooler 1. Within the cooling chamber, the coolant undergoes sufficient heat exchange with the lubricating oil within the steam turbine, absorbing heat carried by the lubricating oil, thereby effectively cooling the lubricating oil, preventing lubrication performance degradation or equipment damage due to excessive oil temperature, and ensuring stable operation of the steam turbine. The second valve 5 is closed, completely blocking the passage between the third tube 313 and the first tube 311. This effectively prevents coolant from accidentally flowing into the third tube 313 during cooling mode, preventing coolant waste and possible system contamination and disruption caused by wastewater backflow. It ensures that the coolant circulates through the system according to the predetermined path, maintaining normal system operation.

[0029] In the second state, the closure of the first valve 4 cuts off the connection between the second tube 312 and the first tube 311, preventing the external coolant from continuing to flow into the cooling chamber of the oil cooler 1. At the same time, the opening of the second valve 5 connects the plant's drainage system to the first tube 311 via the third tube 313. The high-pressure flushing liquid introduced by the backflush assembly 3 enters the cooling chamber of the oil cooler 1 through the sixth tube 323 and the fourth tube 321, powerfully flushing the scale accumulated in the cooling chamber. Under the action of pressure, the flushed wastewater flows through the first tube 311 into the third tube 313, and is then smoothly discharged into the plant's drainage system through the opened second valve 5, thus completing the comprehensive cleaning of the cooling chamber and restoring the good heat exchange performance of the oil cooler 1.

[0030] In some embodiments, the industrial water backwash system 100 for the steam turbine plate oil cooler further includes a third valve 6 and a fourth valve 7. The third valve 6 is disposed in the fifth pipe 322 and communicates with the fifth pipe 322. The fourth valve 7 is disposed in the sixth pipe 323 and communicates with the sixth pipe 323. In the first state, the third valve 6 is open and the fourth valve 7 is closed. In the second state, the third valve 6 is closed and the fourth valve 7 is open. Specifically, Figure 1As shown, the third valve 6 and the fourth valve 7 can both be solenoid valves. The third valve 6 is installed in the fifth tube 322 and is connected to the fifth tube 322. The fourth valve 7 is installed in the sixth tube 323 and is connected to the sixth tube 323. In the first state, the third valve 6 is open, and the coolant in the fifth tube 322 can flow smoothly, participating in the cooling cycle or other auxiliary functions of the system. For example, the fifth tube 322 may transport the cooled liquid to a specific cooling device for further processing, or replenish other auxiliary fluids to required locations in the system to ensure the normal operating parameters of the system. The closed state of the fourth valve 7 ensures that the sixth tube 323 is isolated from the system, preventing high-pressure flushing fluid from entering the system in cooling mode, and avoiding possible damage to the system and abnormal operation.

[0031] In the second state, the closure of third valve 6 cuts off the flow path of the fluid in fifth tube 322, preventing the fluid from interfering with the system during backwash mode. Simultaneously, the opening of fourth valve 7 connects sixth tube 323 with the industrial water backwash supply line, allowing high-pressure flushing fluid to smoothly enter oil cooler 1 through sixth tube 323. Under the powerful impact of the high-pressure flushing fluid, impurities and scale on the heat exchange plates within oil cooler 1 are effectively removed, and wastewater is discharged from the system through the corresponding drainage pipes. The stable opening of fourth valve 7 ensures a continuous supply of high-pressure flushing fluid, ensuring the thoroughness of the backwash effect.

[0032] Thus, by precisely opening and closing the third valve 6 and the fourth valve 7 in different states, the industrial water backwash system 100 for the steam turbine plate oil cooler further optimizes the switching logic between cooling mode and backwash mode. This allows the system to flexibly adjust its operating state based on actual needs, ensuring effective cooling of the steam turbine during normal operation while also enabling thorough cleaning and maintenance of the oil cooler 1 when needed, thereby improving the system's reliability and service life.

[0033] In some embodiments, the monitoring component 2 includes a first pressure sensor 21 and a second pressure sensor 22, which are respectively arranged in the first port and the second port. The first pressure sensor 21 is used to monitor the pressure of the fluid in the first port, and the second pressure sensor 22 is used to monitor the pressure of the fluid in the second port. When the pressure difference between the first pressure sensor 21 and the second pressure sensor 22 is less than a preset value, the industrial water backwashing system 100 of the steam turbine plate oil cooler is in a first state. When the pressure difference between the first pressure sensor 21 and the second pressure sensor 22 is greater than a preset value, the industrial water backwashing system 100 of the steam turbine plate oil cooler is in a second state. Specifically, as Figure 1As shown, first pressure sensor 21 is installed within the first port. During system operation, first pressure sensor 21 continuously monitors the fluid pressure at the first port, providing the system with important information about the coolant supply pressure. For example, it can detect pressure changes caused by fluctuations in the industrial water supply system or other factors, enabling the control unit to promptly adjust system operating parameters to ensure a stable coolant supply.

[0034] The second pressure sensor 22 is installed in the second port. By monitoring the pressure of the second port, the system can understand the flow of coolant in the oil cooler 1, such as whether there is an increase in flow resistance due to scale accumulation or other reasons.

[0035] In addition, the first pressure sensor 21 and the second pressure sensor 22 work together to calculate the pressure difference between the two by comparing the pressure values ​​they monitor. This pressure difference causes the industrial water backwash system 100 of the steam turbine plate oil cooler to switch between the first state and the second state. When the pressure difference between the first pressure sensor and the second pressure sensor is less than a preset value, the system determines that the industrial water backwash system 100 of the steam turbine plate oil cooler is in the first state, i.e., normal cooling mode. In cooling mode, the heat exchange efficiency of the oil cooler 1 is within the normal range, and the coolant can flow smoothly within the oil cooler 1, completing the heat exchange task with the lubricating oil. At this time, the control unit maintains the current operating state of the system based on the signal indicating that the pressure difference is less than the preset value, ensuring a continuous and stable supply of coolant and providing effective cooling for the steam turbine's lubricating oil. For example, the preset value is set to 0.01 MPa. When the pressure monitored by first pressure sensor 21 is P1, the pressure monitored by second pressure sensor 22 is P2, and |P1-P2| is less than 0.01 MPa, the system determines that the flow resistance of the coolant in oil cooler 1 is normal, the heat exchange effect of oil cooler 1 is good, and backwashing is not required. The control unit keeps first valve 4 and third valve 6 open and second valve 5 and fourth valve 7 closed, keeping the system in cooling mode and ensuring stable operation of the steam turbine.

[0036] When the pressure difference between the first pressure sensor 21 and the second pressure sensor 22 is greater than a preset value, the system determines that the industrial water backwash system 100 of the turbine plate oil cooler is in the second state, i.e., a backwash mode is required. During operation, due to the formation of precipitates such as calcium and magnesium ions in the cooling water, as well as the accumulation of impurities such as silt, rust, and microorganisms, scale gradually forms inside the oil cooler 1, increasing the flow resistance of the coolant. When scale accumulates to a certain level, the pressure difference between the first port and the second port increases significantly. For example, when |P1-P2| ≥ 0.01 MPa, the system determines that a large amount of scale has accumulated inside the oil cooler 1, affecting the flow of the coolant and the heat exchange efficiency. At this time, the control unit quickly issues a command to close the first valve 4 and the third valve 6, and open the second valve 5 and the fourth valve 7. Simultaneously, the backwash assembly 3 is activated, introducing high-pressure flushing fluid into the oil cooler 1 through the sixth pipe 323 and the fourth pipe 321, effectively flushing the interior of the oil cooler 1. The sewage after flushing is discharged from the system through the corresponding drainage pipe, thereby completing the cleaning of the oil cooler 1 and restoring its good heat exchange performance.

[0037] In summary, through the precise monitoring and pressure difference judgment of the first pressure sensor 21 and the second pressure sensor 22, the industrial water backwash system 100 of the steam turbine plate oil cooler can sense the working status of the oil cooler 1 in real time and automatically switch the operating mode according to the actual situation, thereby improving the operating efficiency and reliability of the system, reducing manual intervention, and lowering maintenance costs.

[0038] In some embodiments, the industrial water backwash system 100 for a steam turbine plate oil cooler further includes a first storage tank (not shown). In a first state, the first storage tank is connected to the second port of the oil cooler 1, allowing the cooled coolant in the oil cooler 1 to flow into the first storage tank. Specifically, the first storage tank is constructed of corrosion-resistant, well-sealed materials to protect the coolant from external contamination during storage and to prevent coolant leakage from impacting the environment. In the first state, coolant flowing out of the second port flows into the first storage tank and is stored there.

[0039] In some embodiments, the industrial water backwash system 100 for a steam turbine plate oil cooler further includes a second storage tank (not shown). In a second state, the second storage tank is connected to the first port of the oil cooler 1, allowing the flushing fluid cleaned within the oil cooler 1 to flow into the second storage tank. Specifically, the second storage tank is constructed of corrosion-resistant, well-sealed materials. In the second state, the second storage tank serves as a centralized collection container for the flushing fluid, allowing the flushing fluid flowing out of the first port to flow into the second storage tank and store the cleaned fluid, thereby preventing the flushing fluid from being discharged and causing environmental pollution.

[0040] In some embodiments, the industrial water backwash system 100 for a steam turbine plate oil cooler further includes an alarm component (not shown in the figures), which is connected to the monitoring component 2 so that when the pressure detected by the monitoring component 2 exceeds a preset value, the alarm component issues an alarm. Specifically, the alarm component is capable of emitting an audible alarm and may be equipped with auxiliary prompt functions such as flashing lights to ensure that it can attract the attention of operators in various environments. The first pressure sensor and the second pressure sensor convert the real-time monitored pressure data into electrical signals, which are transmitted to the control circuit of the alarm component via a signal transmission line. The control circuit analyzes and processes the received electrical signals. When it is determined that the pressure data exceeds the preset value, the alarm generator is immediately triggered to issue an alarm. Upon receiving the alarm, the operator can quickly determine the abnormal state of the system based on the alarm information and take appropriate measures in a timely manner.

[0041] In some embodiments, the industrial water backwash system 100 for a steam turbine plate oil cooler also includes a third state, whereby the backwash assembly 3 is disconnected from the second port of the oil cooler 1 when the monitoring assembly 2 detects that the pressure at the second port of the oil cooler 1 is greater than 0.4 MPa. Specifically, when the pressure at the second port of the oil cooler 1 exceeds 0.4 MPa, it indicates that the flushing pressure of the flushing liquid is too high. Excessive pressure can cause serious damage to the structure of the oil cooler 1. For example, it can cause deformation of the heat exchange plates of the oil cooler 1, damage to the seals, and lead to coolant leakage. Therefore, by promptly disconnecting the backwash assembly 3 from the second port of the oil cooler 1 in the third state, further damage to the oil cooler 1 caused by excessive pressure can be effectively avoided, protecting the integrity and normal operation of the equipment.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0044] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0046] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0047] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An industrial water backwash system for a steam turbine plate oil cooler, characterized in that: include: steam turbine; an oil cooler, the oil cooler being provided in the steam turbine lubricating oil cooling system and comprising a cooling cavity, a first port, and a second port, the first port and the second port both being in communication with the cooling cavity, the first port of the oil cooler being adapted to admit coolant to cool the lubricating oil in the steam turbine, the coolant after heat exchange in the oil cooler being discharged through the second port; A monitoring component and a backwash component, the monitoring component is connected to the first port and the second port, and is used to monitor the pressure between the first port and the second port. The backwash component is connected to the second port. The industrial water backwash system of the turbine plate oil cooler has a first state and a second state. In the first state, the oil cooler works to cool the lubricating oil in the turbine. In the second state, when the monitoring component detects that the pressure between the first port and the second port exceeds a preset range, the backwash component is suitable for passing a flushing liquid to flush the cooling chamber to clean the scale in the cooling chamber.

2. The industrial water backwashing system for a steam turbine plate oil cooler according to claim 1, characterized in that: It also includes a first connecting piece and a second connecting piece, the first connecting piece is connected to the first port, and the second connecting piece is connected to the second port. In the first state, the first connecting piece is suitable for passing coolant, and the coolant after heat exchange in the oil cooler flows out through the second connecting piece. In the second state, the second connecting piece is suitable for passing flushing liquid, and the flushing liquid in the oil cooler flows out through the first connecting piece.

3. The industrial water backwashing system for a steam turbine plate oil cooler according to claim 2, characterized in that: The first connecting member includes a first tube, a second tube, and a third tube. The first tube is connected to the first port. In the first state, the second tube is connected to the first tube. The second tube is suitable for passing coolant so that the coolant flows into the oil cooler through the second tube and the first tube. In the second state, the third tube is connected to the first tube so that the clean water in the oil cooler is discharged through the third tube and the first tube. The second connecting member includes a fourth tube, a fifth tube and a sixth tube. The fourth tube is connected to the second port. In the first state, the fifth tube is connected to the fourth tube so that the coolant in the oil cooler is discharged through the fifth tube and the fourth tube. In the second state, the sixth tube is connected to the fourth tube. The sixth tube is suitable for introducing cleaning water so that the cleaning water cleans the cooling chamber through the sixth tube and the fourth tube.

4. The industrial water backwashing system for a steam turbine plate oil cooler according to claim 3, characterized in that: It also includes a first valve and a second valve, the first valve is arranged in the second pipe and communicated with the second pipe, the second valve is arranged in the third pipe and communicated with the third pipe, in the first state, the first valve is open and the second valve is closed, in the second state, the first valve is closed and the second valve is open.

5. The industrial water backwashing system for a steam turbine plate oil cooler according to claim 3, characterized in that: It also includes a third valve and a fourth valve, the third valve is arranged in the fifth pipe and communicated with the fifth pipe, the fourth valve is arranged in the sixth pipe and communicated with the sixth pipe, in the first state, the third valve is open and the fourth valve is closed, in the second state, the third valve is closed and the fourth valve is open.

6. The industrial water backwashing system for a steam turbine plate oil cooler according to claim 1, characterized in that: The monitoring component includes a first pressure sensor and a second pressure sensor, which are respectively arranged in the first port and the second port. The first pressure sensor is used to monitor the pressure of the fluid in the first port, and the second pressure sensor is used to monitor the pressure of the fluid in the second port, so that when the pressure difference between the first pressure sensor and the second pressure sensor is less than a preset value, the industrial water backwash system of the steam turbine plate oil cooler is in the first state; when the pressure difference between the first pressure sensor and the second pressure sensor is greater than a preset value, the industrial water backwash system of the steam turbine plate oil cooler is in the second state.

7. The industrial water backwashing system for a steam turbine plate oil cooler according to claim 1, characterized in that: The system further includes a first storage tank. In the first state, the first storage tank is communicated with the second port of the oil cooler so that the cooled coolant in the oil cooler flows into the first storage tank.

8. The industrial water backwashing system for a steam turbine plate oil cooler according to claim 1, characterized in that: The system further comprises a second storage tank. In the second state, the second storage tank is communicated with the first port of the oil cooler so that the flushing liquid after cleaning in the oil cooler flows into the second storage tank.

9. The industrial water backwashing system for a steam turbine plate oil cooler according to claim 1, characterized in that: It also includes an alarm component, which is connected to the monitoring component so that when the pressure monitored by the monitoring component is greater than a preset value, the alarm component will issue an alarm.

10. The industrial water backwashing system for a steam turbine plate oil cooler according to claim 1, characterized in that: The industrial water backwash system for the steam turbine plate oil cooler also includes a third state, so that when the monitoring component detects that the pressure at the second port of the oil cooler is greater than 0.4 MPa, the backwash component is disconnected from the second port of the oil cooler.

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