Anti-fouling and anti-blocking treatment device for external cold water reverse osmosis water replenishing system of extra-high voltage converter station

Abstract

The invention discloses an anti-fouling treatment device for an extra-high voltage converter station external cold water reverse osmosis water replenishing system, and relates to the technical field of power equipment water replenishing treatment.The anti-fouling treatment device comprises a water inlet pipeline, a laminated filter, a pretreatment unit, a water outlet pipeline and a backwashing system, and a supporting frame is fixedly installed on the outer side of the pretreatment unit. Large-particle impurities are intercepted by connecting a filter cartridge intercepting plate, step-by-step fine purification is achieved through a filter screen plate, an activated carbon filter layer and a filter element, deep filtration is completed through a laminated filter, and pollutants attached to the surfaces and gaps of all assemblies are rapidly stripped through precise pushing and dirt removal of an electric telescopic rod on the intercepting plate and high-pressure spraying of a cleaning mechanism; intractable dirt blockage caused by impurity deposition is avoided, the dirt blockage probability of the pretreatment unit and the laminated filter is reduced, the service life of a filter element is prolonged, the shutdown overhaul frequency caused by dirt blockage is reduced, and continuous and stable operation of the external cold water reverse osmosis water replenishing system of the extra-high voltage converter station is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of water replenishment technology for power equipment, specifically to a device for preventing fouling and clogging in the external cold water reverse osmosis water replenishment system of an ultra-high voltage converter station. Background Technology

[0002] Ultra-high voltage (UHV) converter stations are core equipment in DC transmission systems. Their external cooling water systems are used to cool critical components such as converter valves, directly affecting the operational reliability of the converter station. Reverse osmosis technology is widely used in the makeup water treatment of external cooling water systems due to its high-quality effluent and low energy consumption.

[0003] Existing reverse osmosis water replenishment systems mostly employ single filtration or manual backwashing to prevent fouling. These solutions were widely used in early low-pressure, low-flow water replenishment scenarios due to their low initial investment cost, simple structure, and low operating threshold.

[0004] Existing pretreatment units mostly adopt a single or simple two-stage filtration structure, lacking a dedicated component for intercepting large particles of impurities. Large particles such as silt and rust in the raw water directly enter the fine filter element, and small impurities can easily penetrate the primary filter and enter the subsequent membrane system, creating a potential for clogging. Summary of the Invention

[0005] The purpose of this invention is to provide a device for preventing fouling and clogging in the external cold water reverse osmosis makeup water system of an ultra-high voltage converter station, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A fouling prevention device for an external cooling water reverse osmosis makeup water system of an ultra-high voltage converter station includes an inlet pipe, a disc filter, a pretreatment unit, an outlet pipe, and a backwashing system. A support frame is fixedly installed on the outside of the pretreatment unit. The backwashing system and the disc filter are respectively fixedly assembled on opposite sides of the support frame, and are fixedly connected to each other via the outlet pipe. An inlet pipe is fixedly installed on the back of the support frame. The outlet end of the inlet pipe is sealed to the inlet of the pretreatment unit, and the outlet end of the pretreatment unit is sealed to the inlet of the disc filter. The backwashing system is configured to output a reverse flushing water flow to the disc filter to remove contaminants trapped inside the disc filter, thus achieving the fouling prevention function.

[0007] Also includes: A pretreatment mechanism, located inside the pretreatment unit, is used to intercept and remove impurities, reducing the risk of clogging at the source. A cleaning mechanism is located at the top of the pretreatment unit's inner cavity and is used to clean the filter components, reducing maintenance costs.

[0008] A further improvement of the technical solution of the present invention is that: the pretreatment mechanism includes a filter screen plate, an activated carbon filter layer and a filter element, one end of the filter screen plate is fixedly connected to a connecting filter cylinder, the other end of the connecting filter cylinder is fixedly sleeved inside the water inlet of the pretreatment unit, the other end of the connecting filter cylinder is fixedly connected to one end of the filter screen plate, and the filter screen plate, the activated carbon filter layer and the filter element are connected in series along the water flow direction.

[0009] A further improvement of the technical solution of the present invention is that: an intercepting plate is fixedly installed on the inner side of the connecting filter cartridge, an electric telescopic rod is movably installed on one side of the connecting filter cartridge, a movable ring plate is fixedly connected to the telescopic end of the electric telescopic rod, a pushing block is fixedly installed on the inner side of the movable ring plate, and the gap between the pushing block and the intercepting plate corresponds one-to-one, for pushing out the intercepted object trapped by the intercepting plate.

[0010] A further improvement of the technical solution of the present invention is that: the cleaning mechanism includes a spray plate, a connecting shaft is movably installed inside the spray plate, an assembly plate is movably installed outside the connecting shaft, and the assembly plate is distributed in multiple spaced intervals, with a spray head fixedly installed at the bottom of the assembly plate.

[0011] A further improvement of the technical solution of the present invention is that: a plurality of the assembly plates are arranged on the inner side of the spray plate, and the assembly plates are connected in series.

[0012] A further improvement of the technical solution of the present invention is that: a connecting pipe is fixedly connected to the top of the assembly plate, a water pump is fixedly connected to the other end of the connecting pipe, and a water storage tank is fixedly connected to the inlet end of the water pump.

[0013] A further improvement of the technical solution of the present invention is that: a hydraulic lifting column is movably installed at one end of the spray plate, a transmission column is fixedly connected to the bottom of the hydraulic lifting column, a drive gear is meshed on the side of the transmission column, and the inside of the drive gear is fixedly sleeved on the outside of one end of the connecting shaft.

[0014] A further improvement of the technical solution of the present invention is that: a drain outlet is provided at the bottom of the filter screen, and a movable plate is movably installed inside the drain outlet.

[0015] A further improvement of the technical solution of the present invention is that: electric push rods are movably installed at both ends of the movable plate, and the telescopic ends of the electric push rods are fixedly connected to both ends of the bottom of the filter plate.

[0016] A further improvement of the technical solution of the present invention is that: a control panel is provided on the surface of the support frame, and control buttons are movably installed on the surface of the control panel.

[0017] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows: This invention provides a fouling prevention device for the external cold water reverse osmosis makeup water system of an ultra-high voltage converter station. It uses a filter cartridge interceptor plate to trap large particles of impurities, a filter screen, an activated carbon filter layer, and a filter element to achieve progressive fine purification, and a disc filter to complete deep filtration. Combined with a motorized telescopic rod for precise pushing and cleaning of the interceptor plate, and a high-pressure spraying mechanism, it quickly removes contaminants adhering to the surfaces and gaps of each component, preventing impurities from accumulating and forming stubborn fouling. This reduces the probability of fouling in the pretreatment unit and disc filter, extends the service life of the filter elements, reduces the number of downtime maintenance due to fouling, and ensures the continuous and stable operation of the external cold water reverse osmosis makeup water system of the ultra-high voltage converter station.

[0018] This invention provides a device for preventing fouling in the external cooling water reverse osmosis makeup water system of an ultra-high voltage converter station. The device pressurizes the cleaning water in the storage tank through a water pump and then delivers it to the spaced assembly plates through a connecting pipe. This causes the nozzles to form a fine, high-pressure spray jet that precisely washes the surface of the filter screen. At the same time, the hydraulic lifting column drives the transmission column to rise and fall, which is converted into the rotational motion of the connecting shaft through the meshing drive gear. This, in turn, causes the assembly plates and nozzles to rotate synchronously and adjust their angles, effectively removing impurities and contaminants attached to the surface.

[0019] This invention provides a fouling prevention device for the external cooling water reverse osmosis makeup water system of an ultra-high voltage converter station. The electric push rod, movable plate, and drain outlet form a linked sewage discharge structure. During cleaning, the electric push rod extends and retracts, causing the movable plate to separate from the drain outlet, allowing the cleaning wastewater and the removed impurities to be quickly discharged. This prevents wastewater from accumulating in the gaps between the filter components, which would cause impurities to re-attach, thus reducing the risk of secondary fouling from the source. In the filtration state, the movable plate closes the drain outlet, ensuring that the water flows through each stage of the filter components in a sealed manner, ensuring that the purification effect is not affected, and further strengthening the overall fouling prevention capability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the preprocessing unit structure of the present invention; Figure 3 This is a schematic diagram of the connecting filter cartridge structure of the present invention; Figure 4 This is a schematic diagram of the filter screen structure of the present invention; Figure 5 This is a schematic diagram of the movable plate structure of the present invention; Figure 6 This is a schematic diagram of the transmission column structure of the present invention.

[0021] In the diagram: 1. Inlet pipe; 2. Disc filter; 3. Support frame; 4. Pretreatment unit; 5. Outlet pipe; 6. Backwashing system; 41. Connecting filter cartridge; 42. Filter screen; 43. Activated carbon filter layer; 44. Filter element; 45. Water storage tank; 46. Water pump; 47. Connecting pipe; 48. Drive gear; 411. Interception plate; 412. Electric telescopic rod; 413. Movable ring plate; 414. Push block; 421. Spray plate; 422. Connecting shaft; 423. Assembly plate; 424. Spray head; 425. Electric push rod; 426. Movable plate; 427. Drain outlet; 481. Transmission column; 482. Hydraulic lifting column. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to embodiments: like Figure 1-6 As shown, the present invention has the following three specific embodiments.

[0023] Example 1 This invention provides an anti-fouling treatment device for the external cold water reverse osmosis makeup water system of an ultra-high voltage converter station, including an inlet pipe 1, a disc filter 2, a pretreatment unit 4, an outlet pipe 5, and a backwashing system 6. A support frame 3 is fixedly installed on the outside of the pretreatment unit 4. The backwashing system 6 and the disc filter 2 are respectively fixedly assembled on opposite sides of the support frame 3, and the backwashing system 6 and the disc filter 2 are fixedly connected through the outlet pipe 5. The inlet pipe 1 is fixedly installed on the back of the support frame 3. The outlet end of the inlet pipe 1 is sealed to the inlet of the pretreatment unit 4, and the outlet end of the pretreatment unit 4 is sealed to the inlet of the disc filter 2. The backwashing system 6 is configured to output a reverse flushing water flow to the disc filter 2 to remove contaminants trapped inside the disc filter 2, thereby achieving the anti-fouling function.

[0024] Also includes: The pretreatment mechanism, located inside the pretreatment unit 4, is used to intercept and remove impurities, reducing the risk of clogging. The cleaning mechanism is located at the top of the pretreatment unit 4 cavity and is used to clean the filter components, reducing maintenance costs.

[0025] like Figure 1As shown, the water to be treated is sealed and transported to the pretreatment unit 4 through the inlet pipe 1. The water flow first contacts the pretreatment mechanism inside the unit. The pretreatment mechanism directly captures large particulate matter, flocculent matter, mechanical impurities, and other core pollutants that easily cause clogging in the water through physical interception. This reduces the load on subsequent filtration components from the source and prevents impurities from accumulating inside the disc filter 2 and forming stubborn clogging. After being intercepted by the pretreatment mechanism, most of the macroscopic impurities have been removed. After preliminary purification, the water is transported to the inlet of the disc filter 2 through a sealed channel. The pre-purified water flows into the disc filter 2 and utilizes the multi-layer stacked filter 2 to filter the water. The filter structure deeply traps fine particles, colloids, and other pollutants remaining in the water. The backwashing system 6 outputs a reverse flushing water flow to the disc filter 2 through the outlet pipe 5. The water flow direction is opposite to that during normal filtration. The reverse impact force is used to peel off and loosen the pollutants trapped in the gaps between the discs. The peeled pollutants are discharged from the device along with the backwash water flow, realizing the online regeneration of the disc filter and restoring its fine filtration capacity. This avoids water replenishment interruption or filtration failure due to filter element blockage. Then, in conjunction with the cleaning mechanism, the surface of the filter assembly is washed with spray to peel off and clean the attached impurities. The cleaned impurities can be discharged through the drain port of the pretreatment unit.

[0026] Example 2 The difference from Embodiment 1 is that this embodiment discloses a pretreatment mechanism including a filter screen plate 42, an activated carbon filter layer 43, and a filter element 44. One end of the filter screen plate 42 is fixedly connected to a connecting filter cylinder 41, and the other end of the connecting filter cylinder 41 is fixedly sleeved inside the inlet of the pretreatment unit 4. The other end of the connecting filter cylinder 41 is fixedly connected to one end of the filter screen plate 42. The filter screen plate 42, the activated carbon filter layer 43, and the filter element 44 are connected in series along the water flow direction. An interceptor plate 411 is fixedly installed inside the connecting filter cylinder 41, and an electric telescopic rod 412 is movably installed on one side of the connecting filter cylinder 41. A movable ring plate 413 is fixedly connected to the telescopic end of the electric telescopic rod 412, and a pushing block 414 is fixedly installed inside the movable ring plate 413. The pushing block 414 corresponds one-to-one with the gap of the interceptor plate 411 and is used to push out the intercepted objects trapped by the interceptor plate 411. The cleaning mechanism includes a spray plate 4. 21. A connecting shaft 422 is movably installed inside the spray plate 421. An assembly plate 423 is movably installed on the outside of the connecting shaft 422, and the assembly plates 423 are distributed in multiple intervals. A nozzle 424 is fixedly installed at the bottom of the assembly plate 423. Multiple assembly plates 423 are arranged inside the spray plate 421 and are connected in series. A connecting pipe 47 is fixedly connected to the top of the assembly plate 423. A water pump 46 is fixedly connected to the other end of the connecting pipe 47. A water storage tank 45 is fixedly connected to the inlet end of the water pump 46. A hydraulic lifting column 482 is movably installed at one end of the spray plate 421. A transmission column 481 is fixedly connected to the bottom of the hydraulic lifting column 482. A drive gear 48 is meshed on the side of the transmission column 481. The inside of the drive gear 48 is fixedly sleeved on the outside of one end of the connecting shaft 422. A control panel is provided on the surface of the support frame 3. Control buttons are movably installed on the surface of the control panel.

[0027] like Figure 2 , 3As shown in Figures 4 and 6, the water to be treated is sealed and transported to the inlet of the pretreatment unit 4 through the inlet pipe 1. The water first enters the connecting filter cartridge 4, which is fixedly sleeved to the inside of the inlet. The intercepting plate 411 inside the connecting filter cartridge 41 directly intercepts large suspended particles in the water. After preliminary filtration by the intercepting plate 411, the water flows along the path of "connecting filter cartridge 41, filter screen plate 42". The filter screen plate 42 further intercepts smaller suspended impurities in the water through its dense mesh, achieving "secondary filtration" and reducing the load on subsequent adsorption and deep filtration. After passing through the filter screen 42, the water enters the activated carbon filter layer 43. Utilizing the porous adsorption properties of activated carbon, it targets and adsorbs organic matter, odors, some colloidal substances, and dissolved impurities in the water, achieving "three-stage adsorption purification." Finally, the water flows into the filter element 44, where the high-precision filter media deeply traps remaining fine particles, purifying the water to the pretreatment standard suitable for the disc filter. This prevents fine impurities from entering the gaps between the discs and forming stubborn blockages, thus achieving the pretreatment function. Additionally, the filter assembly utilizes the extension and retraction of the electric telescopic rod 412... The end pushes the movable ring plate 413 to move axially along the inner side of the connecting filter cylinder 41. The pushing block moves synchronously with the movable ring plate and precisely inserts into the gap of the interception plate 411, "squeezing and peeling" the trapped impurities from the gap. Then, the water pump 46 is started to pressurize the cleaning water in the water storage tank and deliver it to the assembly plate 423 through the connecting pipe 47. The assembly plate 423 is arranged in multiple intervals, and the nozzles 424 fixed at the bottom synchronously receive high-pressure water flow to form a fine spray jet to spray and clean the surface of the filter screen. Then, the hydraulic lifting column 4... When 82 is started, the transmission column 481 is driven to move up and down. The side of the transmission column 481 meshes with the drive gear 48. The drive gear is fixedly sleeved on the outside of one end of the connecting shaft 422. Therefore, the lifting motion of the transmission column is converted into the rotational motion of the drive gear, which in turn drives the connecting shaft 422 to rotate. The connecting shaft 422 is movably connected to multiple series of assembly plates 423, which drive the assembly plates 423 to rotate synchronously with the connecting shaft. Finally, the nozzle 424 is rotated to adjust the angle. The cleaning wastewater is discharged through the sewage outlet of the pretreatment unit together with the impurities removed by the interceptor plate.

[0028] Example 3 The difference from Embodiment 2 is that this embodiment discloses that the bottom of the filter screen plate 42 is provided with a drain outlet 427, a movable plate 426 is movably installed inside the drain outlet 427, and electric push rods 425 are movably installed at both ends of the movable plate 426. The telescopic ends of the electric push rods 425 are fixedly connected to both ends of the bottom of the filter screen plate 42.

[0029] like Figure 5As shown, after spray cleaning, the electric push rod 425 extends and retracts, causing the movable plate 426 to separate from the drain outlet 427, so that the drain outlet 427 changes from a closed state to an open state. This facilitates the cleaning mechanism to ensure that wastewater is discharged in time after rinsing impurities, and that water flows through the filter in a sealed manner, further optimizing the anti-fouling effect and reducing the maintenance frequency.

[0030] The working principle of the anti-fouling treatment device of the external cold water reverse osmosis makeup water system of the ultra-high voltage converter station will be explained in detail below.

[0031] like Figure 1-6 As shown, the water to be treated is sealed and transported to the pretreatment unit 4 through the inlet pipe 1. The water first enters the connecting filter cartridge 4, which is fixedly sleeved to the inside of the inlet. The intercepting plate 411 inside the connecting filter cartridge 41 directly intercepts large suspended particles in the water. After preliminary filtration by the intercepting plate 411, the water flows along the path of "connecting filter cartridge 41, filter screen plate 42". The filter screen plate 42 further intercepts smaller suspended impurities in the water through its dense mesh, achieving "secondary filtration". To reduce the load on subsequent adsorption and deep filtration, the water flows through the filter screen 42 and enters the activated carbon filter layer 43. Utilizing the porous adsorption characteristics of activated carbon, it targets and adsorbs organic matter, odors, some colloidal substances, and dissolved impurities in the water, achieving "three-stage adsorption purification." Finally, the water flows into the filter element 44, where the high-precision filter media deeply traps remaining fine particles, purifying the water to the pretreatment standard suitable for the disc filter. This prevents fine impurities from entering the gaps between the discs and forming stubborn blockages, achieving the pretreatment function. Then, the water is further purified using an electric telescopic... The telescopic end of rod 412 pushes the movable ring plate 413 to move axially along the inner side of the connecting filter cylinder 41. The pushing block moves synchronously with the movable ring plate and precisely inserts into the gap of the interception plate 411, "squeezing and peeling" the trapped impurities from the gap. Then, the water pump 46 is started to pressurize the cleaning water in the water storage tank and deliver it to the assembly plate 423 through the connecting pipe 47. The assembly plate 423 is arranged in multiple intervals, and the nozzles 424 fixed at the bottom synchronously receive high-pressure water flow to form a fine spray jet, which sprays and cleans the surface of the filter screen. Then, the hydraulic system... When the lifting column 482 is activated, it drives the transmission column 481 to move up and down. The side of the transmission column 481 meshes with the drive gear 48, which is fixedly sleeved on the outside of one end of the connecting shaft 422. Therefore, the lifting motion of the transmission column is converted into the rotational motion of the drive gear, which in turn drives the connecting shaft 422 to rotate. The connecting shaft 422 is movably connected to multiple series of assembly plates 423, causing the assembly plates 423 to rotate synchronously with the connecting shaft. Finally, the nozzle 424 is rotated to adjust its angle, and the cleaning wastewater is discharged through the pretreatment unit's drain outlet along with the impurities removed by the interceptor plate.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An anti-fouling device for an ultra-high voltage converter station external cold water reverse osmosis water replenishment system, comprising an inlet pipeline (1), a laminated filter (2), a pretreatment unit (4), an outlet pipeline (5) and a backwashing system (6), characterized in that: The outer side of the pretreatment unit (4) is fixedly provided with a support frame (3), the backwashing system (6) and the laminated filter (2) are fixedly arranged on opposite sides of the support frame (3), and the backwashing system (6) and the laminated filter (2) are fixedly communicated through the water outlet pipeline (5); the back surface of the support frame (3) is fixedly provided with the water inlet pipeline (1), the water outlet end of the water inlet pipeline (1) is sealingly connected with the water inlet of the pretreatment unit (4), the water outlet end of the pretreatment unit (4) is sealingly communicated with the water inlet of the laminated filter (2), and the backwashing system (6) is configured to output a reverse flushing water flow to the laminated filter (2) to remove pollutants trapped in the laminated filter (2), thereby realizing the anti-pollution blocking function. Further comprising: A pretreatment mechanism arranged in the interior of the pretreatment unit (4) for intercepting and removing impurities to reduce the source of blockage; A cleaning mechanism arranged at the top of the inner cavity of the pretreatment unit (4) for cleaning the filter assembly and reducing maintenance costs.

2. The anti-fouling treatment device for the reverse osmosis water replenishing system of the outer cold water of the extra-high voltage converter station according to claim 1, characterized in that: The pretreatment mechanism comprises a filter screen plate (42), an activated carbon filter layer (43) and a filter core (44), one end of the filter screen plate (42) is fixedly connected with a connecting filter cylinder (41), the other end of the connecting filter cylinder (41) is fixedly sleeved on the inner side of the water inlet of the pretreatment unit (4), and the other end of the connecting filter cylinder (41) is fixedly connected with one end of the filter screen plate (42); the filter screen plate (42), the activated carbon filter layer (43) and the filter core (44) are sequentially connected in the water flow direction.

3. The anti-fouling device of the reverse osmosis water replenishing system of the extra-high voltage converter station external cooling water according to claim 2, characterized in that: The inner side of the connecting filter cylinder (41) is fixedly provided with an intercepting plate (411), one side of the connecting filter cylinder (41) is movably provided with an electric telescopic rod (412), the telescopic end of the electric telescopic rod (412) is fixedly connected with a movable ring plate (413), the inner side of the movable ring plate (413) is fixedly provided with a pushing block (414), and the pushing block (414) is in one-to-one correspondence with the gaps of the intercepting plate (411) for pushing out the intercepted objects of the intercepting plate (411).

4. The anti-fouling device of the reverse osmosis water replenishing system of the extra-high voltage converter station external cooling water according to claim 1, characterized in that: The cleaning mechanism comprises a spraying plate (421), the inner side of the spraying plate (421) is movably provided with a connecting shaft (422), the outer side of the connecting shaft (422) is movably provided with an assembly plate (423), and a plurality of assembly plates (423) are spaced apart, and the bottom of the assembly plate (423) is fixedly provided with a spray head (424).

5. The anti-fouling device of the reverse osmosis water replenishing system of the extra-high voltage converter station external cooling water according to claim 4, characterized in that: A plurality of assembly plates (423) are arranged on the inner side of the spraying plate (421), and the assembly plates (423) are sequentially connected.

6. The anti-fouling device of the reverse osmosis water replenishing system of the extra-high voltage converter station external cooling water according to claim 4, characterized in that: The top of the assembly plate (423) is fixedly connected with a connecting pipe (47), the other end of the connecting pipe (47) is fixedly connected with a water pump (46), and the access end of the water pump (46) is fixedly connected with a water storage tank (45).

7. The anti-fouling device of the reverse osmosis water replenishing system of the extra-high voltage converter station external cooling water according to claim 4, characterized in that: One end of the spray plate (421) is movably mounted with a hydraulic lifting column (482), the bottom of the hydraulic lifting column (482) is fixedly connected with a transmission column (481), the side surface of the transmission column (481) is meshed with a drive gear (48), and the inside of the drive gear (48) is fixedly sleeved on the outside of one end of a connecting shaft (422).

8. The anti-fouling device of the reverse osmosis water replenishing system of the extra-high voltage converter station external cooling water according to claim 2, characterized in that: The bottom of the filter screen plate (42) is provided with a drain port (427), and the inside of the drain port (427) is movably mounted with a movable plate (426).

9. The anti-fouling treatment device for an outer-cooling water reverse osmosis water replenishing system of an extra-high voltage converter station according to claim 8, characterized in that: Both ends of the movable plate (426) are movably mounted with an electric push rod (425), and the telescopic end of the electric push rod (425) is fixedly connected to both ends of the bottom of the filter screen plate (42).

10. The anti-fouling device of the reverse osmosis water replenishing system of the extra-high voltage converter station external cooling water according to claim 1, characterized in that: The surface of the support frame (3) is provided with a control panel, and the surface of the control panel is movably mounted with a control button.

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