Steam generator blanking plate installation tool

Abstract

The present invention relates to the technical field of nuclear power plants, and specifically discloses a steam generator baffle installation tool, which includes a lifting bracket, a controller, a conveying assembly, and a baffle installation assembly. When the steam generator baffle installation tool is in operation, the lifting bracket is first fixed outside the steam generator, and then the lifting bracket, the rotation angle of the rotating shaft, and the angle of the conveying frame relative to the rotating shaft are adjusted, so that the end of the conveying frame provided with the baffle installation assembly is opposite to the manhole. At this time, the telescopic rod is driven from the manhole into the steam generator, and then the angle of the conveying frame relative to the rotating shaft is further adjusted, so that the baffle installation assembly is located near the leg pipe opening, and finally the baffle installation assembly can install the baffle to the leg pipe opening. The tool does not require workers to enter the steam generator to install the baffle, which not only solves the problem of time and labor consumption during the installation process, but also solves the problem of workers easily absorbing a large amount of radiation when installing the baffle.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear power plants, in particular to a steam generator plugging plate installation tool. Background Art

[0002] The workload of steam generator plugging plates is very high. Currently, power plants use manpower to install them. Generally, a group of four people is required: one person enters the steam generator water chamber to install the plugging plates, one person installs the plugging plates outside, one person keeps time, and one person is on standby. If the person entering the steam generator water chamber works for more than 1 minute and the plugging plates are not installed in place, the standby person will need to replace the person installing the plugging plates.

[0003] The Guohe No. 1 hot-side double-folding steam generator baffles are larger and heavier than the single-folding baffles used in the project. One person enters the steam generator through a manhole and installs the baffles at the leg pipe openings. The steam generator baffles are primarily installed manually, a time-consuming and labor-intensive process that can lead to significant radiation exposure. Summary of the Invention

[0004] The purpose of the present invention is to provide a steam generator baffle installation tool to solve the problem in the related art that the steam generator baffle is mainly installed by manpower, which is not only time-consuming and labor-intensive, but also easily causes the workers to absorb a large amount of radiation.

[0005] The present invention provides a steam generator plugging plate installation tool, which includes:

[0006] A lifting bracket is fixed outside the steam generator and is vertically movable;

[0007] Controller;

[0008] The conveying assembly includes a rotating shaft, a conveying frame, and a conveying rod. The rotating shaft is rotatable around its axis and is arranged on the lifting bracket and has two states: relative rotation and relative fixation. The axis of the rotating shaft is located in a horizontal plane. The conveying frame is hinged to one end of the rotating shaft. The controller controls the conveying frame and the rotating shaft to have two states: relative swing and relative fixation. The conveying rod is slidably matched with the conveying frame. The controller controls the conveying rod and the conveying frame to have two states: relative sliding and relative fixation.

[0009] A blocking plate mounting assembly, one end of the conveying rod is hinged to the blocking plate mounting assembly, the controller controls the blocking plate mounting assembly and the conveying rod to have two states of relative swinging and relative fixedness, the conveying assembly is used to deliver the blocking plate mounting assembly from the manhole of the steam generator into the steam generator, and the blocking plate mounting assembly is used to close the leg pipe opening of the steam generator with a blocking plate.

[0010] As an optimal technical solution for the steam generator baffle installation tool, a driving rod is provided at the other end of the rotating shaft, and a limiting rod is provided at the lifting bracket. When the driving rod and the limiting rod abut against each other, the rotating shaft and the lifting bracket are in a mutually fixed state, and the conveying rod is located in a horizontal plane.

[0011] As an optimal technical solution for the steam generator baffle installation tool, the controller includes a first controller, the first controller includes a first control panel, a first traction rope and a second traction rope, the first control panel is arranged on the lifting bracket, a sliding hole is provided on the first control panel, one end of the first traction rope and one end of the second traction rope are fixed to the conveying frame at intervals, the hinged end of the rotating shaft and the conveying frame is located between one end of the first traction rope and one end of the second traction rope, and the other end of the first traction rope and the other end of the second traction rope are passed through the first sliding hole of the first control panel.

[0012] As an optimal technical solution for the steam generator baffle installation tool, the controller also includes a second controller, which includes a second control panel, a third traction rope and a fourth traction rope. The second control panel is arranged at one end of the conveying frame away from the baffle installation assembly. A sliding hole is provided on the second control panel, and one end of the third traction rope and one end of the fourth traction rope are respectively fixed to the two ends of the conveying rod, and the other end of the third traction rope and the other end of the fourth traction rope are passed through the second sliding hole of the second control panel.

[0013] As an optimal technical solution for the steam generator baffle installation tool, the second controller also includes a fifth traction rope and a sixth traction rope, one end of the fifth traction rope and one end of the sixth traction rope are respectively fixed to the two side walls of the baffle installation assembly relative to the swing direction of the conveying rod, and the other end of the fifth traction rope and the other end of the sixth traction rope are passed through the second sliding hole of the second control panel.

[0014] As an optimal technical solution for the steam generator baffle installation tool, the baffle installation assembly includes a baffle clamping piece, a rotating part and a telescopic part. The baffle clamping piece is used to be fixedly connected to the baffle, one end of the rotating part is fixedly connected to the telescopic part, and the other end is hinged to the baffle clamping piece.

[0015] As an optimal technical solution for the steam generator baffle installation tool, the second controller also includes a seventh traction rope and an eighth traction rope, one end of the seventh traction rope and one end of the eighth traction rope are respectively fixed to the two side walls of the baffle clamping part relative to the swinging direction of the rotating part, and the other end of the seventh traction rope and the other end of the eighth traction rope are passed through the second sliding hole of the second control plate.

[0016] As an optimal technical solution for the steam generator baffle installation tool, the telescopic part includes a cylinder outer tube and a cylinder inner tube, the cylinder inner tube is inserted into the cylinder outer tube, one of the cylinder inner tube and the cylinder outer tube is fixedly connected to the rotating part, and the other is hinged to one end of the conveying rod, and the cylinder inner tube and the cylinder outer tube have three states: relative fixed, relative sliding and separated from each other.

[0017] As a preferred technical solution of the steam generator baffle installation tool, the baffle includes a base plate and hinged plates hinged on both sides of the base plate, and the two hinged plates are respectively connected to the base plate through connecting lines;

[0018] The second controller also includes a ninth traction rope and a tenth traction rope, one end of the ninth traction rope and one end of the tenth traction rope are respectively fixed to the two connecting lines, and the other end of the ninth traction rope and the other end of the tenth traction rope are passed through the second sliding hole of the second control panel.

[0019] As an optimal technical solution for the steam generator baffle installation tool, the lifting bracket includes a base, a telescopic part and a sleeve. The base is fixed to the grille plate outside the steam generator, one end of the telescopic part is fixed to the base, and the other end of the telescopic part is fixed to the sleeve. The rotating shaft is inserted into the sleeve and rotates with the sleeve.

[0020] The beneficial effects of the present invention are:

[0021] The present invention provides a steam generator baffle installation tool, which includes a lifting bracket, a controller, a conveying assembly and a baffle installation assembly. The lifting bracket is fixed outside the steam generator and rises and falls in the vertical direction; the conveying assembly includes a rotating shaft, a conveying frame and a conveying rod. The rotating shaft rotates around its axis and is arranged on the lifting bracket and has two states of relative rotation and relative fixation. The axis of the rotating shaft is located in a horizontal plane. The conveying frame is hinged to one end of the rotating shaft. The controller controls the conveying frame and the rotating shaft to have two states of relative swinging and relative fixation. The conveying rod slides with the conveying frame. The controller controls the conveying rod and the conveying frame to have two states of relative sliding and relative fixation; one end of the conveying rod is hinged to the baffle installation assembly, and the controller controls the baffle installation assembly and the conveying rod to have two states of relative swinging and relative fixation. The conveying assembly is used to send the baffle installation assembly from the manhole of the steam generator into the steam generator, and the baffle installation assembly is used to seal the leg pipe opening of the steam generator with the baffle. When the steam generator baffle installation tool is in operation, the lifting bracket is first fixed outside the steam generator. The telescopic beam of the lifting bracket, the rotation angle of the rotating shaft, and the angle of the conveyor frame relative to the rotating shaft are adjusted, so that the end of the conveyor frame equipped with the baffle installation assembly is opposite the manhole. At this time, the telescopic rod is driven through the manhole into the steam generator. The angle of the conveyor frame relative to the rotating shaft is then further adjusted to position the baffle installation assembly near the leg pipe opening. Finally, the baffle installation assembly can install the baffle to the leg pipe opening. This tool does not require workers to enter the steam generator to install the baffle, which not only solves the time and labor-intensive installation process, but also solves the problem of workers easily absorbing large amounts of radiation when installing the baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of a steam generator baffle installation tool according to an embodiment of the present invention;

[0023] Figure 2 Schematic diagram of the assembly of the steam generator baffle installation tool and the steam generator in accordance with the present invention Figure 1 ;

[0024] Figure 3 Schematic diagram of the assembly of the steam generator baffle installation tool and the steam generator in accordance with the present invention Figure 2 ;

[0025] Figure 4 Schematic diagram of the assembly of the steam generator baffle installation tool and the steam generator in accordance with the present invention Figure 3 ;

[0026] Figure 5 Schematic diagram of the assembly of the steam generator baffle installation tool and the steam generator in accordance with the present invention Figure 4 ;

[0027] Figure 6 Schematic diagram of the assembly of the steam generator baffle installation tool and the steam generator in accordance with the present invention Figure 5 .

[0028] In the picture:

[0029] 100, steam generator; 101, manhole; 102, leg pipe opening;

[0030] 200, blocking plate; 201, base plate; 202, hinged plate;

[0031] 1. Lifting bracket; 11. Limit rod; 12. Base; 13. Telescopic member; 14. Driving rod; 15. Sleeve;

[0032] 2. Conveying assembly; 21. Rotating shaft; 22. Conveying frame; 23. Conveying rod;

[0033] 3. Blind plate mounting assembly; 31. Blind plate clamping member; 32. Rotating portion; 33. Telescopic portion; 331. Cylinder outer tube; 332. Cylinder inner tube. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0037] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0038] The steam generator 100 is mounted on a grid plate and includes a lower head assembly, which comprises a lower shell, leg pipes, and a manhole 101. The lower shell is provided with a cavity, and the leg pipes are disposed outside the lower shell and communicate with the cavity. The lower shell is provided with a manhole 101 that communicates with the cavity. When sealing the leg pipe opening 102 with a blocking plate 200, a worker must enter the steam generator 100 through the manhole 101 and then install the blocking plate 200 into the leg pipe opening 102. The blocking plate 200 of the steam generator 100 is primarily installed manually, a process that is not only time-consuming and labor-intensive, but also easily results in workers absorbing significant amounts of radiation.

[0039] To solve the above problems, Figures 1 to 6As shown, this embodiment provides a steam generator plugging plate installation tool, which includes a lifting bracket 1, a controller, a conveying assembly 2 and a plugging plate installation assembly 3. The lifting bracket 1 is fixed outside the steam generator 100 and rises and falls in the vertical direction; the conveying assembly 2 includes a rotating shaft 21, a conveying frame 22 and a conveying rod 23. The rotating shaft 21 is rotated around its axis and is arranged on the lifting bracket 1 and has two states of relative rotation and relative fixity. The axis of the rotating shaft 21 is located in the horizontal plane, and the conveying frame 22 is hinged to one end of the rotating shaft 21. The controller controls the conveying frame 22 and the rotating shaft 21 to have relative swing and relatively fixed states, the conveying rod 23 slides with the conveying rack 22, and the controller controls the conveying rod 23 and the conveying rack 22 to have two states of relative sliding and relative fixedness; one end of the conveying rod 23 is hinged to the blocking plate 200 installation assembly 3, and the controller controls the blocking plate 200, the installation assembly 3 and the conveying rod 23 to have two states of relative swinging and relative fixedness, the conveying assembly 2 is used to send the blocking plate installation assembly 3 from the manhole 101 of the steam generator 100 into the steam generator 100, and the blocking plate installation assembly 3 is used to close the leg pipe opening 102 of the steam generator 100 with the blocking plate 200. When the steam generator baffle installation tool is in operation, the lifting bracket 1 is first fixed outside the steam generator 100, and then the telescopic beam of the lifting bracket 1, the rotation angle of the rotating shaft 21, and the angle of the conveying frame 22 relative to the rotating shaft 21 are adjusted, so that the end of the conveying frame 22 provided with the baffle installation component 3 is opposite to the manhole 101. At this time, the telescopic rod is driven from the manhole 101 into the steam generator 100, and then the angle of the conveying frame 22 relative to the rotating shaft 21 is further adjusted, so that the baffle installation component 3 is located near the leg pipe opening 102. Finally, the baffle installation component 3 can install the baffle 200 to the leg pipe opening 102. This tool does not require workers to enter the steam generator 100 to install the baffle 200, which not only solves the problem of time and labor consumption during the installation process, but also solves the problem of workers easily absorbing a large amount of radiation when installing the baffle 200.

[0040] Optionally, a drive rod 14 is provided at the other end of the rotating shaft 21, and a limit rod 11 is provided on the lifting bracket 1. When the drive rod 14 and the limit rod 11 abut against each other, the rotating shaft 21 and the lifting bracket 1 are fixed to each other, and the conveying rod 23 is located in the horizontal plane. In this embodiment, the drive rod 14 and the rotating shaft 21 are arranged at a right angle. By driving the drive rod 14, the operator can rotate the rotating shaft 21 about its axis, thereby adjusting the angle of the conveying bracket 22 relative to the ground.

[0041] Optionally, the controller includes a first controller, which includes a first control panel, a first traction rope, and a second traction rope. The first control panel is disposed on the lifting bracket 1, and a slide hole is disposed on the first control panel. One end of the first traction rope and one end of the second traction rope are fixedly connected to the conveyor frame 22 at intervals. The hinged end of the rotating shaft 21 and the conveyor frame 22 is located between one end of the first traction rope and one end of the second traction rope. The other end of the first traction rope and the other end of the second traction rope are passed through the first slide hole of the first control panel. In this embodiment, by pulling the other end of the first traction rope or the other end of the second traction rope, the conveyor frame 22 can be swung relative to the rotating shaft 21. When it is necessary to fix the conveyor frame 22 relative to the rotating shaft 21, the other end of the first traction rope and the other end of the second traction rope can be tightened simultaneously to fix the conveyor frame 22 relative to the rotating shaft 21.

[0042] Optionally, the controller further includes a second controller, which includes a second control panel, a third traction rope, and a fourth traction rope. The second control panel is disposed at an end of the conveying frame 22 away from the blocking plate mounting assembly 3. The second control panel is provided with a slide hole. One end of the third traction rope and one end of the fourth traction rope are respectively fixedly connected to two ends of the conveying rod 23. The other end of the third traction rope and the other end of the fourth traction rope are respectively passed through the second slide hole of the second control panel. In this embodiment, by pulling the other end of the third traction rope or the other end of the fourth traction rope, the conveying rod 23 can be slid relative to the conveying frame 22. When it is necessary to fix the conveying rod 23 relative to the conveying frame 22, the other end of the third traction rope and the other end of the fourth traction rope are simultaneously tightened to fix the conveying rod 23 relative to the conveying frame 22.

[0043] Optionally, the second controller further includes a fifth traction rope and a sixth traction rope, one end of the fifth traction rope and one end of the sixth traction rope being respectively fixedly connected to the two side walls of the blocking plate mounting assembly 3 in the direction of swinging relative to the conveying rod 23, and the other ends of the fifth traction rope and the other ends of the sixth traction rope being passed through the second slide hole of the second control plate. In this embodiment, by pulling the other end of the fifth traction rope or the other end of the sixth traction rope, the blocking plate mounting assembly 3 can be swung relative to the conveying rod 23. When it is necessary to fix the blocking plate mounting assembly 3 relative to the conveying rod 23, the other ends of the fifth traction rope and the other ends of the sixth traction rope are simultaneously tightened to fix the blocking plate mounting assembly 3 relative to the conveying rod 23.

[0044] Optionally, the baffle mounting assembly 3 includes a baffle clamping member 31, a rotating portion 32, and a telescopic portion 33. The baffle clamping member 31 is used to be fixedly connected to the baffle 200. One end of the rotating portion 32 is fixedly connected to the telescopic portion 33, and the other end is hinged to the baffle clamping member 31. In this embodiment, the baffle clamping member 31 is clamped to the baffle 200. When the baffle 200 is installed to the leg pipe opening 102, the baffle clamping member 31 can be pulled to separate the baffle 200. The rotating portion 32 is a pneumatic pump that can drive the baffle clamping member 31 to rotate, and the telescopic portion 33 can drive the rotating portion 32 to extend and retract along the axial direction of the telescopic portion 33.

[0045] Optionally, the second controller further includes a seventh traction rope and an eighth traction rope, one end of the seventh traction rope and one end of the eighth traction rope being respectively fixedly connected to the two side walls of the blocking plate clamping member 31 in the direction of swinging relative to the rotating portion 32, and the other ends of the seventh traction rope and the other ends of the eighth traction rope being passed through the second slide hole of the second control plate. In this embodiment, by pulling the other ends of the seventh traction rope and the other ends of the eighth traction rope, the blocking plate clamping member 31 can be swung relative to the rotating portion 32. When it is necessary to fix the blocking plate clamping member 31 relative to the conveying rod 23, the other ends of the seventh traction rope and the other ends of the eighth traction rope are simultaneously tightened to fix the blocking plate clamping member 31 relative to the rotating portion 32.

[0046] Optionally, the telescopic portion 33 includes a cylinder outer tube 331 and a cylinder inner tube 332, the cylinder inner tube 332 is inserted into the cylinder outer tube 331, one of the cylinder inner tube 332 and the cylinder outer tube 331 is fixed to the rotating portion 32, and the other is hinged to one end of the conveying rod 23, and the cylinder inner tube 332 and the cylinder outer tube 331 have three states: relatively fixed, relatively sliding, and separated from each other. In this embodiment, the gas source generator injects gas into the cavity between the cylinder inner tube 332 and the cylinder outer tube 331, and the cylinder inner tube 332 slides or is relatively fixed relative to the cylinder outer tube 331. When the blocking plate clamping member 31 cannot be separated from the blocking plate 200, the cylinder inner tube 332 and the cylinder outer tube 331 can be separated by directly injecting excessive gas into the cylinder inner tube 332 and the cylinder outer tube 331. When the cylinder inner tube 332 and the cylinder outer tube 331 are separated, the other ends of the seventh and eighth traction ropes are released from the second sliding holes of the second control panel and remain within the steam generator. To remove the blocking plate 200, simply insert the cylinder inner tube 332 into the cylinder outer tube 331 to remove the blocking plate 200 from the manhole 101 of the steam generator 100.

[0047] Optionally, the blocking plate 200 includes a base plate 201 and hinged plates 202 hinged to either side of the base plate 201, the two hinged plates 202 being connected to the base plate 201 via connecting wires. The second controller further includes a ninth traction rope and a tenth traction rope, one end of each of which is fixedly connected to the two connecting wires, and the other ends of each of which are inserted through a second sliding hole in the second control plate. In this embodiment, to facilitate insertion of the blocking plate 200 from the manhole 101 into the steam generator 100 cavity, the blocking plate 200 is configured to be foldable. When the two connecting wires are not subject to external forces, the two hinged plates 202 unfold under their own weight and lie flush with the base plate 201. When the two connecting wires are subject to external forces, the two hinged plates 202 are forced to form a predetermined angle with the base plate 201, thereby facilitating insertion of the blocking plate 200 from the manhole 101 into the steam generator 100 cavity.

[0048] Optionally, the lifting bracket 1 includes a base 12, a telescopic member 13, and a sleeve 15. The base 12 is fixed to the grille plate outside the steam generator 100. One end of the telescopic member 13 is fixed to the base 12, and the other end of the telescopic member 13 is fixed to the sleeve 15. The rotating shaft 21 is inserted into the sleeve 15 and rotates with the sleeve 15. In this embodiment, the telescopic member 13 is driven to move in the vertical direction, thereby adjusting the height of the rotating shaft 21, the conveying assembly 2, and the blocking plate mounting assembly 3 from the grille plate.

[0049] Optionally, the base 12 is fixed with an electromagnet for magnetic attraction with the grid plate. In this embodiment, the base 12 is fixed relative to the grid plate by a battery iron. In other embodiments, the base 12 can be fixed to the grid plate by screwing or clamping.

[0050] The installation process of the blocking plate 200 includes:

[0051] 1. Turn on the magnetic switch of the base 12 and fix it to the grid plate of the mounting station of the blocking plate 200 of the steam generator 100;

[0052] 2. By controlling the ninth and tenth traction ropes of the second controller, the blocking plate 200 is folded and fixed by the blocking plate clamping member 31;

[0053] 3. Adjust the fifth, sixth, seventh, and eighth traction ropes so that the conveying rod 23, the blocking plate mounting assembly 3, and the blocking plate 200 are all located in the same straight line;

[0054] 4. If Figure 2 As shown, drive the driving rod 14, adjust the angles of the delivery rod 23 and the rotating shaft 21, and adjust the height of the lifting bracket 1 so that the delivery rod 23 is opposite to the axis of the manhole 101;

[0055] 5. If Figure 3 and 4 As shown, the third traction rope and the fourth traction rope are adjusted, so that the delivery rod 23 extends the blocking plate installation assembly 3 and the blocking plate 200 into the manhole 101 and into the cavity;

[0056] 6. If Figure 5 As shown, the driving rod 14 is driven, thereby causing the driving rod 14 to abut against the limiting rod 11, and the conveying rod 23 is in a horizontal plane;

[0057] 7. If Figure 6 As shown, the traction rope of the second controller is adjusted, and the telescopic part 33 and the rotating part 32 are adjusted, so that the blocking plate 200 is unfolded and the leg tube opening 102 is closed.

[0058] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Steam generator plugging plate installation tool, characterized in that: include: A lifting bracket (1) is fixedly mounted outside the steam generator (100) and is movable in a vertical direction; Controller; The conveying assembly (2) comprises a rotating shaft (21), a conveying frame (22) and a conveying rod (23), wherein the rotating shaft (21) is arranged on the lifting bracket (1) to rotate around its axis and has two states of relative rotation and relative fixation, the axis of the rotating shaft (21) is located in a horizontal plane, the conveying frame (22) is hinged to one end of the rotating shaft (21), the controller controls the conveying frame (22) and the rotating shaft (21) to have two states of relative swinging and relative fixation, the conveying rod (23) is slidably matched with the conveying frame (22), and the controller controls the conveying rod (23) and the conveying frame (22) to have two states of relative sliding and relative fixation; a blocking plate installation assembly (3), one end of the delivery rod (23) being hinged to the blocking plate installation assembly (3), the controller controlling the blocking plate installation assembly (3) and the delivery rod (23) to have two states of relative swinging and relative fixation, the delivery assembly (2) being used to deliver the blocking plate installation assembly (3) from the manhole (101) of the steam generator (100) into the steam generator (100), and the blocking plate installation assembly (3) being used to seal the leg pipe opening (102) of the steam generator (100) with a blocking plate (200); The controller includes a first controller, the first controller includes a first control panel, a first traction rope and a second traction rope, the first control panel is arranged on the lifting bracket (1), a first sliding hole is arranged on the first control panel, one end of the first traction rope and one end of the second traction rope are fixed to the conveying frame (22) at intervals, the hinged end of the rotating shaft (21) and the conveying frame (22) is located between one end of the first traction rope and one end of the second traction rope, and the other end of the first traction rope and the other end of the second traction rope are passed through the first sliding hole of the first control panel; The controller further includes a second controller, the second controller including a second control panel, a third traction rope and a fourth traction rope, the second control panel being arranged at one end of the conveying frame (22) away from the blocking plate mounting assembly (3), the second control panel being provided with a second sliding hole, one end of the third traction rope and one end of the fourth traction rope being fixedly connected to two ends of the conveying rod (23) respectively, and the other end of the third traction rope and the other end of the fourth traction rope being passed through the second sliding hole of the second control panel; The second controller further includes a fifth traction rope and a sixth traction rope, one end of the fifth traction rope and one end of the sixth traction rope are respectively fixed to the two side walls of the blocking plate mounting assembly (3) relative to the swing direction of the conveying rod (23), and the other end of the fifth traction rope and the other end of the sixth traction rope are passed through the second sliding hole of the second control plate; The blocking plate mounting assembly (3) comprises a blocking plate clamping member (31), a rotating portion (32) and a telescopic portion (33); the blocking plate clamping member (31) is used for being fixedly connected to the blocking plate (200); one end of the rotating portion (32) is fixedly connected to the telescopic portion (33), and the other end is hinged to the blocking plate clamping member (31) and has two states of relative swinging and relative fixation; The second controller further includes a seventh traction rope and an eighth traction rope, one end of the seventh traction rope and one end of the eighth traction rope are respectively fixed to the two side walls of the blocking plate clamping member (31) relative to the swing direction of the rotating part (32), and the other end of the seventh traction rope and the other end of the eighth traction rope are passed through the second sliding hole of the second control plate; The blocking plate (200) comprises a base plate (201) and hinge plates (202) hinged to both sides of the base plate (201), and the two hinge plates (202) are respectively connected to the base plate (201) via connecting lines; The second controller also includes a ninth traction rope and a tenth traction rope, one end of the ninth traction rope and one end of the tenth traction rope are respectively fixed to the two connecting lines, and the other end of the ninth traction rope and the other end of the tenth traction rope are passed through the second sliding hole of the second control panel.

2. The steam generator blocking plate installation tool according to claim 1, characterized in that: The other end of the rotating shaft (21) is provided with a driving rod (14), and the lifting bracket (1) is provided with a limiting rod (11). When the driving rod (14) and the limiting rod (11) abut against each other, the rotating shaft (21) and the lifting bracket (1) are in a mutually fixed state, and the conveying rod (23) is located in a horizontal plane.

3. The steam generator blocking plate installation tool according to claim 1, characterized in that: The telescopic portion (33) comprises a cylinder outer tube (331) and a cylinder inner tube (332), wherein the cylinder inner tube (332) is inserted into the cylinder outer tube (331), wherein one of the cylinder inner tube (332) and the cylinder outer tube (331) is fixedly connected to the rotating portion (32), and the other is hinged to one end of the conveying rod (23), and the cylinder inner tube (332) and the cylinder outer tube (331) have three states: relatively fixed, relatively sliding, and mutually separated.

4. The steam generator blocking plate installation tool according to claim 1, characterized in that: The lifting bracket (1) comprises a base (12), a telescopic member (13) and a sleeve (15); the base (12) is fixed to a grid plate outside the steam generator (100); one end of the telescopic member (13) is fixed to the base (12); the other end of the telescopic member (13) is fixed to the sleeve (15); and the rotating shaft (21) is inserted into the sleeve (15) and rotatably cooperates with the sleeve (15).

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