An automatic cleaning device for a steam generator mud collector

Abstract

The application discloses an automatic cleaning device for a steam generator sludge collector, which comprises a cleaning mechanism, the cleaning mechanism is provided with a spray head inserted into a communicating pipe of the steam generator sludge collector, the spray head is provided with a spray hole facing the rear or the rear side, the spray hole sprays liquid or gas to drive the spray head to move forward in the curved communicating pipe and flush the deposits in the steam generator sludge collector, and the cleaning mechanism is further provided with a guide assembly installed on the spray head, the guide assembly is connected with the specific structure of the steam generator sludge collector to make the spray head move forward along a specific path; the application realizes the cleaning of the sludge collector area through the cleaning mechanism, and after the partition cleaning is completed, the pipe switching mechanism is automatically switched to other sludge collector partition cleaning, so that the problem of sludge deposition and removal in the sludge collector is solved, and personnel do not need to work in the steam generator for a long time.

Description

Technical Field

[0001] This invention relates to the field of steam generators in pressurized water reactor nuclear power plants, and more particularly to an automatic cleaning device for a sludge collector in a steam generator. Background Technology

[0002] The secondary-side sludge collector is used by the steam generator to collect sludge separated by the upper gas-water separator. According to design requirements, cleaning is required when the average thickness of the sediment reaches 70mm. The sludge collector has six internal sections, five of which are equipped with two connecting bends approximately 5-9 meters long. Each section has two connecting bends and two suction pipes, totaling twelve pipes, with their ends concentrated at the working platform below the secondary-side manhole of the steam generator. The outlet of each connecting bend mates with a corresponding guide rail inside the sludge collector, allowing cleaning tools to pass through the connecting bend and then hook onto the guide rail for high-pressure water cleaning of each section within the sludge collector.

[0003] The sludge collector has a complex structure, and there is currently no equipment available for cleaning the sediment from it. The connecting bends in the sludge collector have an inner diameter of approximately 45mm, and the lengths of the connecting bends in each section range from 5 to 9 meters, with some bends. How to pass the cleaning tools through the bends and connect them to the guide rails, and achieve automated cleaning, is a significant challenge. To overcome these difficulties, a steam generator sludge collector flushing device is designed to achieve automated cleaning and sludge removal. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic cleaning device for a sludge collector of a steam generator.

[0005] The technical solution adopted by this invention to solve its technical problem is: an automatic cleaning device for a steam generator sludge collector, comprising:

[0006] The cleaning mechanism is equipped with a nozzle inserted into the sludge collector of the steam generator. The nozzle has a spray hole facing obliquely to the rear or rear. The spray hole sprays liquid or gas to drive the nozzle forward in the curved connecting pipe and flush the sediment in the sludge collector of the steam generator.

[0007] The cleaning mechanism is also equipped with a guide assembly installed on the nozzle, which is connected to a specific structure of the steam generator sludge collector to allow the nozzle to advance along a specific path;

[0008] A pipe-to-pipe switching mechanism is provided, wherein the cleaning mechanism is mounted on the pipe-to-pipe switching mechanism, and the pipe-to-pipe switching mechanism is mounted on a connecting pipe bank that is interconnected with the steam generator sludge collector, thereby driving the nozzle to switch between the connecting pipes to switch the cleaning mechanism to a specific area of ​​the steam generator sludge collector; and

[0009] A reel mechanism is provided, and the cleaning mechanism is connected to the reel mechanism to recycle the cleaning mechanism.

[0010] Furthermore, in the aforementioned automatic cleaning device for a steam generator sludge collector, preferably, one end of the nozzle is provided with a water inlet, and a water pipe for connecting to an external water source is installed on the water inlet; at least two nozzles are arranged symmetrically along the axial direction of the nozzle.

[0011] Furthermore, in the aforementioned automatic cleaning device for a steam generator sludge collector, the cleaning mechanism preferably further includes a path maintaining mechanism respectively installed on the nozzle and inside the steam generator sludge collector to guide the movement path of the nozzle.

[0012] Furthermore, in the aforementioned automatic cleaning device for a steam generator sludge collector, the path maintaining mechanism preferably includes a guide rail installed inside the steam generator sludge collector, a guide drive component disposed on the guide assembly, and a transmission assembly disposed between the nozzle and the guide assembly. The guide drive component, in cooperation with the transmission assembly, drives the guide assembly to cooperate with the guide rail and limits its sliding on the guide rail.

[0013] Furthermore, in the aforementioned automatic cleaning device for a steam generator sludge collector, the guiding assembly preferably includes a guide hook joint rotatably mounted on the nozzle and a hook groove formed on the guide hook joint and inserted into the guide rail, so as to move along a specific path of the guide rail;

[0014] The guide drive is mounted on the guide connector and cooperates with the nozzle to drive the guide connector to rotate radially along the central axis of the nozzle.

[0015] Furthermore, in the aforementioned automatic cleaning device for a steam generator sludge collector, the hook groove preferably engages with the guide rail to prevent the guide hook from detaching from the guide rail and sliding along the guide rail.

[0016] Furthermore, in the aforementioned automatic cleaning device for a steam generator sludge collector, the path maintaining mechanism preferably further includes a camera element installed on the guide hook joint for observing the docking of the hook groove with the guide rail.

[0017] Furthermore, in the aforementioned automatic cleaning device for a steam generator sludge collector, the pipe switching mechanism preferably includes a base plate, a lateral movement control assembly, and a connector;

[0018] The base plate is installed at the open end of the connecting pipe array, and the lateral movement control component is installed on the base plate; the connector is installed on the lateral movement control component and is driven by the lateral movement control component to move laterally to correspond to the opening of one of the connecting pipes; the cleaning mechanism is detachably installed on the connector to drive the cleaning mechanism to switch to different connecting pipes.

[0019] Furthermore, in the aforementioned automatic cleaning device for a steam generator sludge collector, the inter-pipe switching mechanism preferably further includes a locking element installed on the docking head to elastically clamp the cleaning mechanism;

[0020] The pipe switching mechanism also includes a monitoring element installed between the lateral movement control assembly and the connector to observe the connection between the cleaning mechanism and the connecting pipe opening.

[0021] Furthermore, in the aforementioned automatic cleaning device for a steam generator sludge collector, the reel mechanism preferably includes a support base, a reel, and a motor;

[0022] The reel is rotatably mounted on the support base, the water pipe is wound on the reel, the motor is mounted on the support base, and the output end of the motor is connected to the reel to drive the reel to rotate and retract the water pipe.

[0023] The present invention has the following advantages: the cleaning mechanism can clean the sludge collector area, and after the cleaning of the area is completed, the pipe switching mechanism can automatically switch to the cleaning of other sludge collector areas to solve the problem of sludge deposition and removal in the sludge collector. It eliminates the need for personnel to work in the steam generator for a long time, effectively reducing the radiation dose to personnel and the risk of suffocation in high-risk operations in the confined space of the container. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0025] Figure 1 This is a first-view structural schematic diagram of an automatic cleaning device for a steam generator sludge collector according to some embodiments of the present invention;

[0026] Figure 2 This is a schematic diagram of the cleaning mechanism and path maintaining mechanism of an automatic cleaning device for a steam generator sludge collector according to some embodiments of the present invention;

[0027] Figure 3 This is a schematic diagram of the nozzle and guide hanger of an automatic cleaning device for a steam generator sludge collector according to some embodiments of the present invention;

[0028] Figure 4 This is an automatic cleaning device for a steam generator sludge collector according to some embodiments of the present invention. Figure 3 A schematic diagram of the second-view structure;

[0029] Figure 5 This is a schematic diagram of the inter-pipe switching mechanism of an automatic cleaning device for a steam generator sludge collector in some embodiments of the present invention;

[0030] Figure 6 This is a schematic diagram of the reel mechanism of an automatic cleaning device for a steam generator sludge collector, according to some embodiments of the present invention.

[0031] Explanation of the labels in the diagram:

[0032] 1. Cleaning mechanism; 11. Spray head; 12. Spray hole; 13. Water pipe; 14. Water inlet;

[0033] 2. Pipe-to-pipe switching mechanism; 21. Base plate; 22. Lateral movement control assembly; 23. Connector; 24. Locking component; 25. Monitoring element;

[0034] 3. Reel mechanism; 31. Support base; 32. Reel; 33. Motor;

[0035] 4. Path keeping mechanism; 41. Guide rail; 42. Guide assembly; 421. Guide hook joint; 422. Hook groove; 43. Guide drive component; 44. Camera element. Detailed Implementation

[0036] To provide a clearer understanding of the technical features, objectives, and effects of this invention, specific embodiments are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or element referred to must have a specific orientation; therefore, they should not be construed as limitations on this invention.

[0037] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," "fixing," and "setting" 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 or an electrical connection; 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. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0038] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0039] The technical solution adopted by this invention to solve its technical problem is:

[0040] like Figures 1 to 6 As shown, some embodiments of the present invention disclose an automatic cleaning device for a steam generator sludge collector. The automatic cleaning device for the steam generator sludge collector includes a cleaning mechanism 1, a pipe switching mechanism 2, and a reel mechanism 3. The cleaning mechanism 1 is provided with a nozzle 11 inserted into the steam generator sludge collector. The nozzle 11 has a spray hole 12 facing obliquely to the rear or rear. The spray hole 12 sprays liquid or gas to drive the nozzle 11 forward in a curved connecting pipe and to flush the sediment in the steam generator sludge collector. The cleaning mechanism also includes a guide assembly rotatably mounted on the nozzle 11. The guide assembly is connected to a specific structure of the steam generator sludge collector so that the nozzle 11 advances along a specific path. Multiple oblique nozzles 12 are provided, and multiple oblique nozzles 12 are circumferentially opened on the nozzle 11. High-pressure water is sprayed obliquely backward after passing through the nozzles 12, thereby generating a recoil force as a driving force to push the nozzle 11 forward. At the same time, the high-pressure water washes the inside of the sludge collector, and the wash water mixed with sediment is discharged through the suction pipe of the sludge collector.

[0041] In some embodiments, the nozzle 12 can also inject high-pressure gas to impact the sediment inside the sludge collector of the steam generator at high speed, causing the sediment to detach from the sludge collector and be blown out.

[0042] The cleaning mechanism 1 is installed on the inter-pipe switching mechanism 2, which is installed on the connecting pipe bank that is interconnected with the steam generator sludge collector. The switching mechanism 2 drives the nozzle 11 to switch between the connecting pipes to switch the cleaning mechanism 1 to a specific area of ​​the steam generator sludge collector. The cleaning mechanism 1 is connected to the reel mechanism 3 for recycling.

[0043] In some embodiments, the sludge collector has five independent chambers, each connected to a connecting pipe. Understandably, the cleaning mechanism 1 enters the chamber of the sludge collector through the connecting pipe, and then sprays high-pressure water from the nozzle 12 to flush the chamber. After flushing, the cleaning mechanism 1 is retracted by the reel mechanism 3 back to the opening of the connecting pipe, and then, driven by the pipe switching mechanism 2, moves to the next connecting pipe and passes through it to clean the next chamber of the sludge collector.

[0044] In some embodiments, five connecting pipes are installed in a row inside the steam generator. Additionally, the sludge collector is equipped with a suction pipe for discharging flushing water, which is sequentially connected to five independent chambers, or each chamber may have its own suction pipe. A vacuum pump is installed on the suction pipe to remove the flushing water.

[0045] like Figures 2 to 4 As shown, one end of the nozzle 11 is provided with a water inlet 14, and a water pipe 13 for connecting to an external water source is installed on the water inlet 14; at least two nozzle holes 12 are arranged symmetrically along the axis of the nozzle 11.

[0046] In some embodiments, the water pipe 13 is made of a flexible hose, and one end of the water pipe 13 is connected to an external high-pressure water source device. For example, the water pipe 13 is connected to a water pump, which draws water through the water pipe 13 and sprays it out from the nozzle 12 of the nozzle 11.

[0047] In some embodiments, the other end of the nozzle 11 is a closed end, the inner wall of the closed end is hemispherical and protrudes forward, and the nozzle 12 is opened from the inner wall of the hemispherical shape at an angle to the rear. When the water flow impacts the hemispherical shape, it will spread evenly in all directions, so that the high-pressure water can enter each nozzle 12 evenly, avoiding different water pressure in the nozzle 12, which would generate a backlash force in different directions and cause the nozzle 11 to tilt.

[0048] The cleaning mechanism 1 also includes a path-maintaining mechanism 4 installed on the nozzle 11 and in the sludge collector of the steam generator, which guides the movement path of the nozzle 11.

[0049] In some embodiments, the path holding mechanism 4 is for the nozzle 11 to move along a specific path inside the sludge collector, to prevent the nozzle 11 from moving randomly inside the sludge collector, and to facilitate the nozzle 11 to exit the sludge collector along a specific path.

[0050] The path holding mechanism 4 includes a guide rail 41 installed in the sludge collector of the steam generator, a guide drive 43 set on the guide assembly, and a transmission assembly set between the nozzle 11 and the guide assembly. The guide drive 43 cooperates with the transmission assembly to drive the guide assembly 42 to cooperate with the guide rail 41 and limit its sliding on the guide rail 41.

[0051] In some embodiments, the guide rail 41 forms a horizontal or vertical beam structure within the sludge collector. The guide rail 41 is installed in each of the five independent chambers. The nozzle 11 passes through the connecting pipe and docks with the guide rail 41, and moves along the guide rail 41.

[0052] In some embodiments, the steam generator sludge collector has symmetrical connecting pipes on both sides, and the two connecting pipes are coaxial. Inside, there are two transverse guide rails 41, which correspond to the openings of the two connecting pipes respectively. The two guide rails 41 are spliced ​​together, and the length of the spliced ​​guide rails 41 is equal to the diameter of the chamber of the steam generator sludge collector.

[0053] In some embodiments, the guide drive 43 drives the guide assembly 42 to rotate, so that the guide assembly 42 docks with the guide rail 41.

[0054] In some embodiments, the transmission assembly includes two meshing gears, which are respectively mounted on the nozzle 11 and the guide hook 421.

[0055] like Figures 3 to 4 As shown, the guide assembly 42 includes a guide connector 421 rotatably mounted on the nozzle 11 and a mounting slot 422 formed in the guide connector 421 and inserted into the guide rail 41, so that the nozzle 11 moves along a specific path of the guide rail 41; the guide drive 43 is mounted on the guide connector 421 and cooperates with the nozzle 11 to drive the guide connector 421 to rotate radially along the central axis of the nozzle 11.

[0056] In some embodiments, a small gear and a large gear are respectively installed on the guide drive 43 and the nozzle 11. The small gear and the large gear mesh with each other. The guide drive 43 is a motor. The small gear is installed on the output shaft of the motor. The motor drives the small gear to rotate. The small gear rotates along the circumference of the large gear, thereby driving the guide hook joint 421 to rotate, adjusting the position of the hook groove 422, aligning it with the cross-section of the guide rail 41, so that the hook groove 422 can be connected to the guide rail 41.

[0057] In some embodiments, a shaft is mounted on the front end of the nozzle 11, the shaft is coaxial with the nozzle 11, and the guide connector 421 is rotatably mounted along the shaft axis; or the shaft is rotatably mounted on the nozzle 11, and the shaft and the guide connector 421 are fixedly mounted.

[0058] In some embodiments, a cable is connected to the motor, and the cable is connected to an external power source and control device. Additionally, the cable is tied to the water pipe 13 using ropes or similar equipment to prevent it from becoming tangled and wrapped around the steam generator.

[0059] The mounting groove 422 engages with the guide rail 41 to prevent the guide mounting joint 421 from detaching from the guide rail 41 and sliding along the guide rail 41.

[0060] In some embodiments, the mounting groove 422 has a T-shaped structure, and the guide rail 41 also has a T-shaped structure. The mounting groove 422 is inserted into the T-shaped structure of the guide rail 41 through the T-shaped structure, and the mounting groove 422 slides on the guide rail 41.

[0061] Alternatively, the mounting slot 422 and the guide rail 41 can also be circular. For example, the mounting slot 422 can be formed as a circular hole, and the guide rail 41 can be formed as a cylindrical structure. Here, the shapes of the mounting slot 422 and the guide rail 41 are not limited. It is sufficient that the mounting slot 422 is slidably limited on the guide rail 41.

[0062] The path-keeping mechanism also includes a camera element 44 mounted on the guide connector 421 for observing the docking of the mounting slot 422 with the guide rail 41.

[0063] In some embodiments, the camera element 44 serves as a camera, and a display screen is provided externally that is electrically or wirelessly connected to the camera element 44. This allows observation of the state of the nozzle 11 passing through the connecting pipe, the docking slot 422 engaging with the guide rail 41, and the state of the nozzle 11 rinsing the inside of the sludge collector.

[0064] like Figure 1 and Figure 5 As shown, the inter-pipe switching mechanism 2 includes a base plate 21, a lateral movement control component 22, and a connector 23. The base plate 21 is installed at the open end of the connecting pipe row, and the lateral movement control component 22 is installed on the base plate 21. The connector 23 is installed on the lateral movement control component 22 and is driven by the lateral movement control component 22 to move laterally to connect to the opening of one of the connecting pipes. The cleaning mechanism 1 is detachably installed on the connector 23 to drive the cleaning mechanism 1 to switch to different connecting pipes.

[0065] In some embodiments, the substrate 21 is mounted on the open ends of five connecting pipes. The lateral movement control component 22 drives the connector 23 to move, allowing the cleaning mechanism 1 to be freely moved to the opening of the connecting pipe and inserted into it. The pipe switching mechanism 2 allows personnel to control the cleaning mechanism 1 to switch between different connecting pipes from outside the steam generator, thereby avoiding personnel working inside the steam generator for extended periods and effectively reducing the radiation dose to personnel and the risk of suffocation in the confined space inside the container.

[0066] like Figure 6 As shown, the inter-pipe switching mechanism 2 also includes a locking element 24 that is installed on the connector 23 to elastically clamp the cleaning mechanism 1; the inter-pipe switching mechanism 2 also includes a monitoring element 25 installed between the lateral movement control assembly 22 and the connector 23 to observe the docking of the cleaning mechanism 1 with the opening of the connecting pipe.

[0067] In some embodiments, the locking member 24 clamps and temporarily fixes the cleaning mechanism 1 to the connector 23 to prevent the cleaning mechanism 1 from falling off the connector 23 and damaging the steam generator when the connector 23 moves.

[0068] In some embodiments, the lateral movement control assembly 22 further includes a control module that controls the connector 23 to move to a specific position, a monitoring element 25 that monitors whether the cleaning mechanism 1 corresponds to the opening of the connecting pipe, and displays a real-time monitoring screen of the connector 23.

[0069] The reel mechanism 3 includes a support base 31, a reel 32, and a motor 33. The reel 32 is rotatably mounted on the support base 31, and the water pipe 13 is wound on the reel 32. The motor 33 is mounted on the support base 31, and the output end of the motor 33 is connected to the reel 32 to drive the reel 32 to rotate and recycle the water pipe 13.

[0070] In some embodiments, the support base 31 is installed on the manhole flange of the steam generator. After the cleaning mechanism 1 has finished rinsing the sludge collector chamber, the reel 32 winds up the water pipe 13, and the water pipe 13 pulls the nozzle 11 out of the connecting pipe.

[0071] For example Figure 6 As shown, in some embodiments, the support base 31 consists of a drive-end support frame, a water pipe-end support frame, a support crossbar, and a hanger, used to fix the reel mechanism 3 to the manhole flange surface of the steam generator and to serve as a support base 31 for the reel 32 to rotate. The drive-end support frame is mounted on the drive-end reel stepped shaft, and the water pipe-end support frame is mounted on the water pipe-end reel shaft; the support crossbar fixes the drive-end support frame and the water pipe-end support frame together; the hanger connects to the support frame, fixing the reel mechanism 3 to the manhole flange surface of the steam generator.

[0072] In some embodiments, the reel 32 comprises a cylindrical body, a drive-end reel, a water pipe-end reel, and bearings. The cylindrical body is fixedly installed between the two reels and has a square groove for winding the water pipe 13 onto the cylindrical body. The water pipe 13 is connected to an externally rotating water pipe connector through the center of the cylindrical body. The drive-end reel has one side fixedly connected to the cylindrical body by screws, and the other side has a stepped shaft. This stepped shaft is installed in the support base 31 through bearings and is connected to the motor 33. The water pipe-end reel has one side fixedly connected to the cylindrical body by screws, and the other side has a hollow shaft, which is installed in the support module through bearings. The water pipe connector is led out through this hollow shaft and connected to an external high-pressure pipe.

[0073] In some embodiments, the reel mechanism further includes a motor mounting box and a coupling for controlling the rotation of the reel 32. The motor 33 is fixedly mounted on the motor mounting box and connected to the reel 32 via the coupling. The motor mounting box is fixedly mounted on the support base 31.

[0074] The automatic cleaning device for the steam generator sludge collector is also equipped with a control mechanism, which includes a cleaning control module, a pipe switching control module, and a reel control module. The cleaning control module monitors the forward movement of the cleaning mechanism 1 and controls its connection to the guide rail 41. The pipe switching control module monitors the alignment of the cleaning mechanism 1 with the connecting pipe and controls its entry and exit from different connecting pipes. The reel control module controls the rotation of the reel 32 to wind up and unwind the water pipe 13, thereby controlling the entry and exit of the cleaning mechanism 1.

[0075] The automatic cleaning device for the sludge collector of the steam generator will be further explained below in conjunction with the usage process.

[0076] When the automatic cleaning device for the steam generator sludge collector is in use: the cleaning mechanism 1 is installed on the connector 23, and the lateral movement control component 22 drives the connector 23 to move to the opening of the connecting pipe. Then the nozzle 11 passes through the connecting pipe and enters the sludge collector, and the guide connector 421 is connected to the guide rail 41. The nozzle 12 sprays water, and the nozzle 11 moves along the guide rail 41 through the guide connector 421 to flush the chamber of the sludge collector.

[0077] After rinsing, the motor 33 drives the reel 32 to wind up the water pipe 13, and the nozzle 11 retracts along the guide rail 41 and the connecting pipe to the connector 23. Then, driven by the lateral movement control component 22, it moves to the opening of another connecting pipe and passes through the connecting pipe into the remaining chambers of the sludge collector for rinsing.

[0078] It is understood that the above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of the present invention, and can also make several modifications and improvements, all of which fall within the protection scope of the present invention. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. An automatic cleaning device for a sludge collector in a steam generator, characterized in that, include: The cleaning mechanism is equipped with a nozzle inserted into the connecting pipe of the steam generator sludge collector. The nozzle has a spray hole facing obliquely to the rear or rear. The spray hole sprays liquid or gas to drive the nozzle forward in the curved connecting pipe and flush the sediment in the steam generator sludge collector. The cleaning mechanism is further provided with a guide assembly installed on the nozzle. The cleaning mechanism also includes a path holding mechanism installed on the nozzle and in the sludge collector of the steam generator, respectively. The path holding mechanism includes a guide rail installed in the sludge collector of the steam generator, a guide drive component disposed on the guide assembly, and a transmission component disposed between the nozzle and the guide assembly. The guide drive component cooperates with the transmission component to drive the guide assembly to cooperate with the guide rail and limit its sliding on the guide rail, so that the nozzle moves along the guide rail. A pipe-to-pipe switching mechanism is provided, wherein the cleaning mechanism is mounted on the pipe-to-pipe switching mechanism, and the pipe-to-pipe switching mechanism is mounted on a connecting pipe bank that communicates with the steam generator sludge collector, driving the nozzle to switch between the connecting pipes to switch the cleaning mechanism to a specific area of ​​the steam generator sludge collector; and A reel mechanism is provided, and the cleaning mechanism is connected to the reel mechanism to recycle the cleaning mechanism.

2. The automatic cleaning device for a steam generator sludge collector according to claim 1, characterized in that, One end of the nozzle has a water inlet, and a water pipe is installed on the water inlet to connect to an external water source; at least two spray holes are arranged symmetrically along the axial direction of the nozzle.

3. The automatic cleaning device for a steam generator sludge collector according to claim 2, characterized in that, The guide assembly includes a guide connector rotatably mounted on the nozzle and a mounting slot formed on the guide connector and inserted into the guide rail, so that the nozzle moves along the guide rail; The guide drive component is mounted on the guide connector and cooperates with the nozzle to drive the guide connector to rotate radially along the central axis of the nozzle.

4. The automatic cleaning device for a steam generator sludge collector according to claim 3, characterized in that, The mounting groove engages with the guide rail to prevent the guide hook from detaching from the guide rail and sliding along the guide rail.

5. The automatic cleaning device for a steam generator sludge collector according to claim 3, characterized in that, The path-keeping mechanism also includes a camera element installed on the guide connector for observing the docking of the mounting slot with the guide rail.

6. The automatic cleaning device for a steam generator sludge collector according to claim 1, characterized in that, The tube switching mechanism includes a base plate, a lateral movement control component, and a connector; The base plate is installed at the open end of the connecting pipe array, and the lateral movement control component is installed on the base plate; the connector is installed on the lateral movement control component and is driven by the lateral movement control component to move laterally to connect to the opening of one of the connecting pipes; the cleaning mechanism is detachably installed on the connector to drive the cleaning mechanism to switch to different connecting pipes.

7. The automatic cleaning device for a steam generator sludge collector according to claim 6, characterized in that, The inter-pipe switching mechanism also includes a locking element installed on the docking head for elastically clamping the cleaning mechanism; The pipe switching mechanism also includes a monitoring element installed between the lateral movement control assembly and the connector to observe the docking of the cleaning mechanism with the connecting pipe opening.

8. The automatic cleaning device for a steam generator sludge collector according to claim 2, characterized in that, The reel mechanism includes a support base, a reel, and a motor; The reel is rotatably mounted on the support base, the water pipe is wound on the reel, the motor is mounted on the support base, and the output end of the motor is connected to the reel to drive the reel to rotate and retract the water pipe.

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