Manual pipe plugging auxiliary tool suitable for long and narrow water chamber environment

Abstract

The utility model relates to the technical field of pipe plugging auxiliary tools, and aims to solve the problems that the posture of the existing automatic pipe plugging equipment can only be adjusted in a specified area and a pipe plugging tool head can only be replaced in the specified area, and the jacking force in the pipe plugging process cannot be ensured in a steam generator water chamber with limited space. The device is particularly used in the plug roll expansion process. The utility model discloses a hand-operated pipe plugging auxiliary tool suitable for long and narrow water chamber environment, which comprises a fixed part, a lifting part and an adaptive part, the fixed part is provided with a toe piece, the fixed part is connected with the lifting part, the lifting part is provided with a rodless cylinder slide block, the adaptive part is installed on the rodless cylinder slide block, and the toe piece is connected with the adaptive part. The adaptive part is provided with pipe plugging equipment and a pipe plugging tool head, and the pipe plugging equipment is connected with the pipe plugging tool head. In the manual pipe plugging process, the pipe plugging device and the plug are lifted, the plug and the pipe plugging tool extend into the heat transfer pipe, and necessary jacking force is provided for the roller expansion process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pipe plugging auxiliary tool technical field, especially to a manual pipe plugging auxiliary tool suitable for narrow and long water chamber environment. BACKGROUND

[0002] The steam generator is the pressure boundary of the primary and secondary circuits of the nuclear power plant, and it is the core component of the heat exchange between the primary radioactive coolant and the secondary non-radioactive feedwater, and is also the radioactive protection barrier of the secondary circuit. The operation experience of nuclear power plants at home and abroad shows that the degradation problem of the heat transfer pipe cannot be completely eliminated, therefore, on the basis of regularly checking the integrity of the heat transfer pipe, it is necessary to carry out quick and reliable pipe plugging operation on the damaged or defective heat transfer pipe to make it retire from active service, so as to ensure the safe and reliable operation of the steam generator.

[0003] At present, the steam generator narrow height space uses the roll expansion type automatic pipe plugging equipment, but in the implementation process, the automatic pipe plugging equipment can only adjust the posture in the specified area and can only replace the pipe plugging tool head in the specified area, which leads to complex crawling route and low efficiency in the automatic pipe plugging process; at the same time, due to the limitation of the steam generator water chamber space, the construction personnel cannot perform pipe plugging operation in a proper posture during manual pipe plugging, and the jacking force during pipe plugging cannot be guaranteed, especially during the roll expansion process of the plug. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a manual pipe plugging auxiliary tool suitable for narrow and long water chamber environment, solving the problem that the existing automatic pipe plugging equipment can only adjust the posture in the specified area and can only replace the pipe plugging tool head in the specified area, and solving the problem that the construction personnel cannot guarantee the jacking force during pipe plugging in the steam generator water chamber with space limitation, especially during the roll expansion process of the plug.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A manual pipe plugging auxiliary tool suitable for narrow and long water chamber environment, comprising a fixing component, a lifting component and an adapting component, the fixing component has a toe piece, the fixing component is connected with the lifting component, the lifting component has a rodless cylinder slider, the adapting component is installed on the rodless cylinder slider, the adapting component has a pipe plugging equipment and a pipe plugging tool head, and the pipe plugging equipment is connected with the pipe plugging tool head.

[0007] In some embodiments, the fixing component has a connecting support, a top foot and a gas collecting block, the gas collecting block is arranged in the middle part of the connecting support, and the top foot is arranged at the top of the connecting support.

[0008] In some embodiments, a through hole is arranged on the connecting bracket, and the top of the toe piece is arranged through the through hole.

[0009] In some embodiments, a camera assembly is mounted on the connecting bracket.

[0010] In some embodiments, the lifting component has a back frame, a dovetail piece and a rodless cylinder body, the back frame is mounted to one side of the rodless cylinder body, a rodless cylinder slider is mounted to the other side, and the dovetail piece is mounted on the rodless cylinder slider.

[0011] In some embodiments, the rodless cylinder body is tightly fixed on the back frame through a fixing block.

[0012] In some embodiments, an RQC gas lock female head is arranged on the back frame, and the RQC gas lock female head is matched with an RQC gas lock male head at the bottom of the fixing component.

[0013] In some embodiments, a slide rail is arranged on the front surface of the rodless cylinder body, and the rodless cylinder slider is arranged in the slide rail.

[0014] In some embodiments, the adapter component has a connecting plate, a dovetail mounting component, a centering clamp jaw and a transition plate, the connecting plate is connected to the pipe plugging device, the transition plate connects the connecting plate and the dovetail mounting component together, a dovetail groove is arranged on the dovetail mounting component, the centering clamp jaw is connected to the connecting plate, and the centering clamp jaw clamps the pipe plugging tool head.

[0015] In some embodiments, the pipe plugging device and the pipe plugging tool head are connected through an adapter.

[0016] Compared with the prior art, the manual pipe plugging auxiliary tool suitable for a narrow and long water chamber environment has the following beneficial effects:

[0017] The manual pipe plugging auxiliary tool is simple and easy to use, the pipe plugging device and the plug are lifted in the manual pipe plugging process, the plug and the pipe plugging tool are inserted into the heat transfer pipe, and necessary jacking force is provided for the roll expansion process.

[0018] The manual pipe plugging auxiliary tool is divided into three components for installation, the weight of each component is about 5 kg, manual installation of construction personnel is facilitated, and the overall cross section of the manual pipe plugging auxiliary tool is smaller than the diameter of the manhole of the steam generator.

[0019] Further, the adapter assembly with the fixed pipe plugging device and the pipe plugging tool head is installed through the dovetail structure, installation is facilitated, and the axial installation precision of the pipe plugging device is effectively ensured through the dovetail structure.

[0020] Further, the related work of the manual pipe plugging auxiliary tool is remotely controlled by the pneumatic control box, so that even if a fault occurs, the personal safety and the damage to the maintenance object will not be endangered.

[0021] Further, the fixed part is fixed on the steam generator tube plate through the toe piece, the flatness between the fixed part and the tube plate is ensured through the "pul" function of the toe piece, the installation reference accuracy is ensured, and the lifting part is installed through the RQC gas lock, so that the connection is reliable, and the disassembly and assembly are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the utility model, the drawings needed to be used in the technical description will be simply introduced below.

[0023] Figure 1 The structure schematic view of the manual pipe plugging auxiliary tool suitable for the narrow and long water room environment is provided for the utility model.

[0024] Figure 2 The structure schematic view of the fixed part is provided for the utility model.

[0025] Figure 3 The front view of the fixed part is provided for the utility model.

[0026] Figure 4 The structure schematic view of the lifting part is provided for the utility model.

[0027] Figure 5 The structure schematic view of the adaptive part is provided for the utility model.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 1. Fixed part, 2. Lifting part, 3. Adaptive part, 4. RQC gas lock, 5. Connecting support, 6. Camera assembly, 7. RQC gas lock male head, 8. Toe piece, 9. Top foot, 10. Gas collecting block, 11. Back frame, 12. RQC gas lock female head, 13. Dovetail piece, 14. Rodless cylinder sliding block, 15. Fixed block, 16. Rodless cylinder body, 17. Connecting plate, 18. Dovetail installation part, 19. Centering clamp jaw, 20. Pipe plugging tool head, 21. Transition plate, 22. Adapter, 23. Pipe plugging equipment. DETAILED DESCRIPTION

[0030] The specific embodiments will be further described in detail below.

[0031] As Figures 1 to 5As shown, the utility model provides a kind of manual pipe plugging auxiliary tool suitable for long and narrow water room environment, including fixed component 1, lifting component 2, adaptive component 3 and RQC gas lock 4.Fixed component 1 includes connecting bracket 5, camera assembly 6, RQC gas lock male head 7, toe piece 8, top foot 9 and gas collection block 10.Lifting component 2 includes back frame 11, RQC gas lock female head 12, dovetail piece 13, rodless cylinder slider 14, fixed block 15 and rodless cylinder body 16.Adaptive component 3 includes connecting plate 17, dovetail mounting component 18, centering clamp jaw 19, pipe plugging tool head 20, transition plate 21, adapter 22 and pipe plugging equipment 23.

[0032] RQC gas lock 4 (Robot Quick Changer) is an existing tool quick changer device used in the field of industrial robots, including RQC gas lock male head 7 and RQC gas lock female head 12.

[0033] Fixed component 1 is fixed on the steam generator tube plate through the structure of crawler toes (i.e., toe piece 8).Lifting component 2 is mainly a rodless cylinder, and the rodless cylinder body 16 is connected with fixed component 1 through RQC gas lock 4.

[0034] Rodless cylinder slider 14 is connected with adaptive component 3 in the form of dovetail (i.e., dovetail piece 13), and pneumatic control is used to control the actions of fixed component 1, lifting component 2 and adaptive component 3.

[0035] After installation, pipe plugging equipment 23 carries pipe plugging tool head 20 to face the target heat transfer pipe nozzle, and the rodless cylinder of lifting component 2 is used to lift pipe plugging equipment 23 and pipe plugging tool head 20 in and out of the heat transfer pipe nozzle.

[0036] Fixed component 1 is used to fix the manual pipe plugging auxiliary tool on the heat transfer pipe plate, and provides a force point for the whole manual pipe plugging auxiliary tool. Figure 2 And Figure 3 As shown, fixed component 1 includes connecting bracket 5, camera assembly 6, RQC gas lock male head 7, toe piece 8, top foot 9 and gas collection block 10.

[0037] Two symmetrical through holes for toe piece 8 to pass through are arranged on connecting bracket 5, and two toe pieces 8 pass through the through holes.Toe piece 8 is in number of 2 and is symmetrically arranged.The upper part of toe piece 8 is in elongated rod structure, and the lower part is in cylindrical structure.

[0038] Fixed component 1 is fixed on the steam generator tube plate through toe piece 8, and the planeness between fixed component 1 and the steam generator tube plate is guaranteed through the "pul" function of toe piece 8, the installation reference accuracy is guaranteed, and lifting component 2 is installed through RQC gas lock 4, which not only connects and bears reliably, but also is convenient to disassemble and assemble.

[0039] A middle part of the connecting bracket 5 is provided with a gas collecting block 10, which is arranged close to the top of the connecting bracket 5. The gas collecting block 10 is used for two purposes. On the one hand, it divides the three-way control gas of the toe piece 8 into two parts, synchronously controls the two toe pieces, and on the other hand, it diverts the control gas path of the RQC gas lock 4 and the lifting cylinder. The top of the connecting bracket 5 is provided with three top feet 9, which are in a conical structure. The top feet 9 are used to offset the reaction force in the process of blocking the pipe.

[0040] The connecting bracket 5 is also provided with a camera assembly mounting part, on which a camera assembly 6 is mounted. The camera assembly 6 is used to monitor whether the pipe blocking tool head 20 smoothly enters the target heat transfer pipe and also monitors the state of the heat transfer pipe and the plug after the pipe blocking operation.

[0041] In an embodiment, the cross section of the connecting bracket 5 is approximately in the shape of a convex letter.

[0042] As shown in Figure 4 The lifting component 2 is used to lift the pipe blocking device 23, extend or retract the pipe blocking tool head 20 into or out of the heat transfer pipe, and provide a jacking force for the pipe blocking process to ensure that the pipe blocking tool core rod is tightly attached to the roller needle. The lifting component 2 includes a back frame 11, an RQC gas lock female head 12, a dovetail piece 13, a rodless cylinder slider 14, a fixed block 15, and a rodless cylinder body 16.

[0043] The back frame 11 is provided with the RQC gas lock female head 12, which is adapted to the RQC gas lock male head 7. The RQC gas lock female head 12 is positioned by its own shape and positioning pins and is connected to the back frame 11 by screws. The back frame 11 is used to connect the RQC gas lock female head 12 and the rodless cylinder body 16. The rodless cylinder body 16 is tightly fixed to the back frame 11 by the fixed block 15. The back frame 11 and the fixed block 15 are fixedly connected by screws. The installation position of the back frame 11 is opposite to the installation position of the rodless cylinder slider 14, for example, the rodless cylinder slider 14 is installed on the front face of the rodless cylinder body 16, and the back frame 11 is installed on the back face of the rodless cylinder body 16.

[0044] The rodless cylinder body 16 is in the shape of a cuboid. The front face is provided with a sliding rail, on which the rodless cylinder slider 14 is slidingly connected. The rodless cylinder slider 14 is provided with the dovetail piece 13, which is used to connect the dovetail mounting component 18, so that the adapter component 3 can be detachably mounted on the lifting component 2. The rodless cylinder includes a body, a slider and other structures. The top of the rodless cylinder body 16 is in contact with the connecting bracket 5.

[0045] The number of fixed blocks 15 is four. Each fixed block is in the shape of a c. The four fixed blocks together clamp the rodless cylinder body 16. The rodless cylinder body 16 is tightly fixed to the back frame 11 by the fixed block 15. The rodless cylinder slider 14 is connected to the dovetail groove by the dovetail piece 13.

[0046] As shown in Figure 5 The adapter component 3 comprises a connecting plate 17, a dovetail mounting component 18, a centering clamp jaw 19, a pipe plugging tool head 20, a transition plate 21, an adapter head 22 and a pipe plugging device 23. The adapter component 3 realizes the transmission connection between the pipe plugging device 23 and the lifting cylinder, i.e. the pipe plugging device 23 is mounted on the rodless cylinder body 16. The adapter component 3 is a connecting whole, the dovetail mounting component 18 in the adapter component 3 is connected with the rodless cylinder slider 14, and the movement of the rodless cylinder slider 14 drives the movement of the whole adapter component 3.

[0047] The connecting plate 17 is an L-shaped structure connecting plate as a whole. The connecting plate 17 is used for connecting the pipe plugging device 23, and is positioned with the pipe plugging device 23 through two positioning pins and is fixedly connected with the pipe plugging device 23 through four screws. The positioning pins are arranged above the pipe plugging device 23.

[0048] The transition plate 21 connects the connecting plate 17 and the dovetail mounting component 18 together, the dovetail mounting component 18 is provided with a dovetail groove, and the dovetail groove is matched with the dovetail piece 13. The transition plate 21 can realize the fine adjustment of the axial and radial positioning of the pipe plugging device 23. The dovetail groove is matched with the dovetail piece 13 of the lifting component 2, so that the quick disassembly and assembly between the adapter component 3 and the lifting component 2 is realized.

[0049] The centering clamp jaw 19 is used for adjusting the state of the pipe plugging tool head 20, so that the axis of the pipe plugging tool head 20 is perpendicular and the pipe plugging tool head 20 can smoothly enter and exit the heat transfer pipe. The centering clamp jaw 19 is fixed with the connecting plate 17 through a quick release screw, and the two are similar to the connection of a sliding block and a guide rail, and a quick release screw is arranged on the sliding block to fix the sliding of the sliding block.

[0050] The adapter head 22 is connected to the bottom of the pipe plugging tool head 20, and the other end of the adapter head 22 is connected to the pipe plugging device 23, for example, through threaded connection.

[0051] The working steps of the manual pipe plugging auxiliary tool suitable for the narrow and long water chamber environment provided by the utility model are as follows:

[0052] Step 1: equipment installation.

[0053] The toe piece 8 of the fixing component is arranged in the inner wall of the heat transfer pipe, three top feet 9 are in contact with the plane of the tube plate of the steam generator to provide plane positioning, after the claw of the toe piece 1 grabs the heat transfer pipe, the three top feet 9 are pushed tightly on the tube plate from a distance, so that the plane installation precision of the whole fixing component is ensured.

[0054] Step 2: pipe plugging.

[0055] The transition plate 21 and the connecting plate 17 are positioned through two positioning pins and are fixed through four screws, the connection between the positioning pin and the dovetail groove and the connecting plate 17 is adjusted, so that the fine adjustment of the axial and radial positioning of the pipe plugging device 23 is realized;

[0056] After the equipment is installed, the pipe blocking tool head 20 carried by the equipment is opposite to the target heat transfer pipe orifice, and the pipe blocking equipment 23 and the pipe blocking tool head 20 are lifted in and out of the heat transfer pipe orifice through the rodless cylinder of the lifting component 2.

[0057] The utility model divides three components of fixed component, lifting component and adaptive component to install, and the weight of each component is about 5kg, manual installation of construction personnel is convenient, and the overall section of manual pipe blocking auxiliary tool is less than the diameter of the steam generator manhole.

[0058] The above merely describes the specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A manual pipe plugging auxiliary tool suitable for use in a narrow and long water chamber environment, characterized in that: The invention comprises a fixing component (1), a lifting component (2) and an adapter component (3), wherein the fixing component (1) has a toe component (8), the fixing component (1) is connected to the lifting component (2), the lifting component (2) has a rodless cylinder slider (14), the adapter component (3) is mounted on the rodless cylinder slider (14), the adapter component (3) has a pipe blocking device (23) and a pipe blocking tool head (20), and the pipe blocking device (23) is connected to the pipe blocking tool head (20).

2. The manual pipe plugging auxiliary tooling suitable for use in a narrow and long water chamber environment according to claim 1 is characterized in that: The fixing component (1) comprises a connecting bracket (5), a top foot (9) and a gas collecting block (10); the gas collecting block (10) is arranged in the middle of the connecting bracket (5); and the top foot (9) is arranged at the top of the connecting bracket (5).

3. The manual pipe plugging auxiliary tool suitable for use in a narrow and long water chamber environment according to claim 2 is characterized in that: The connecting bracket (5) is provided with a through hole, and the top of the toe member (8) is arranged through the through hole.

4. The manual pipe plugging auxiliary tool suitable for use in a narrow and long water chamber environment according to claim 2 is characterized in that: A camera assembly (6) is mounted on the connecting bracket (5).

5. The manual pipe plugging auxiliary tool suitable for use in a narrow and long water chamber environment according to claim 1 is characterized in that: The lifting component (2) comprises a back frame (11), a dovetail piece (13) and a rodless cylinder body (16), wherein the back frame (11) is mounted on one side of the rodless cylinder body (16), the rodless cylinder slider (14) is mounted on the other side, and the dovetail piece (13) is mounted on the rodless cylinder slider (14).

6. The manual pipe plugging auxiliary tool suitable for use in a narrow and long water chamber environment according to claim 5 is characterized in that: The rodless cylinder body (16) is pressed and fixed on the back frame (11) via a fixing block (15).

7. The manual pipe plugging auxiliary tool suitable for use in a narrow and long water chamber environment according to claim 5 is characterized in that: The back frame (11) is provided with an RQC air lock female head (12), and the RQC air lock female head (12) is adapted to the RQC air lock male head (7) at the bottom of the fixing component (1).

8. The manual pipe plugging auxiliary tool suitable for use in a narrow and long water chamber environment according to claim 5 is characterized in that: A slide rail is provided on the front of the rodless cylinder body (16), and the rodless cylinder slider (14) is provided on the slide rail.

9. The manual pipe plugging auxiliary tool suitable for use in a narrow and long water chamber environment according to claim 1 is characterized in that: The adapter component (3) comprises a connecting plate (17), a dovetail mounting component (18), a centering clamp (19) and a transition plate (21); the connecting plate (17) is connected to the pipe plugging device (23); the transition plate (21) connects the connecting plate (17) and the dovetail mounting component (18); a dovetail groove is provided on the dovetail mounting component (18); the centering clamp (19) is connected to the connecting plate (17); and the centering clamp (19) clamps the pipe plugging tool head (20).

10. The manual pipe plugging auxiliary tool suitable for use in a narrow and long water chamber environment according to claim 9, characterized in that: The pipe blocking device (23) and the pipe blocking tool head (20) are connected via an adapter (22).

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