Heat transfer tube maintenance equipment installation tools

Abstract

The present disclosure belongs to the field of nuclear power maintenance technology, and specifically relates to a heat transfer tube maintenance equipment installation tool. In the embodiment of the present disclosure, the maintenance personnel can insert the elastic pin into the pin limit hole so that the rotating arm and the installation rod are located on the same straight line, which is convenient for sending the equipment to be installed into the steam generator water chamber head cavity through the hand hole at the lower part of the steam generator water chamber head. The maintenance personnel can remove the elastic pin from the pin limit hole, so that the rotating arm falls around the rotating axis under the action of gravity to the limit block. Since the installation rod is inclined to the steam generator water chamber head cavity tube sheet, the angle between the rotating arm and the installation rod is an acute angle, which can facilitate the maintenance personnel to make the installation platform parallel to the tube sheet, which is conducive to the installation of the equipment. In this way, the embodiment of the present disclosure can effectively improve the equipment installation efficiency of the steam generator water chamber head cavity, and there is no need for maintenance personnel to enter the water chamber, avoiding maintenance personnel from suffering a greater radiation dose.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power maintenance, and in particular relates to a heat transfer tube maintenance equipment installation tool. Summary of the invention

[0002] In order to overcome the problems existing in the related art, a heat transfer tube maintenance equipment installation tool is provided.

[0003] According to one aspect of an embodiment of the present disclosure, a heat transfer tube maintenance equipment installation tool is provided, the heat transfer tube maintenance equipment installation tool comprising: a mounting rod and a mounting platform;

[0004] One end of the mounting rod is connected to a first quick connector;

[0005] The mounting platform includes a rotating fork, a rotating arm, an extension block, a joint support block, an elastic latch, and a limit block;

[0006] A quick connection hole is formed at one end of the swivel fork, and the first quick connector can be connected to the quick connection hole;

[0007] The other end of the rotating fork is connected to one end of the rotating arm through a rotating shaft;

[0008] A through hole is axially provided between one end and the other end of the rotating fork, the elastic latch is arranged in the through hole, a latch stop hole is arranged at one end of the rotating arm, when the elastic latch is inserted into the latch stop hole, the angle between the rotating arm and the mounting rod is a flat angle, when the elastic latch is out of the latch stop hole, the rotating arm can rotate around the rotating axis;

[0009] The limit block is connected to the lower surface of the rotating fork, and the limit block can prevent the rotating arm from rotating toward the limit block. When the rotating arm is pressed against the limit block, the angle between the rotating arm and the mounting rod is an acute angle;

[0010] The other end of the rotating arm is connected to one end of the extension block;

[0011] The other end of the extension block is connected to one end of the joint support block, and the other end of the joint support block is provided with a second quick connector, and the second quick connector is used to connect the equipment to be installed.

[0012] In a possible implementation, the mounting platform further includes: a first pulley support, a movable pulley, and a mounting support block;

[0013] The first pulley support is connected to the extension block, and the movable pulley is connected to the first pulley support;

[0014] The mounting support block is connected to the rotating arm, and a pin hole is provided on the mounting support block;

[0015] The heat transfer tube repair equipment installation tool also includes: a locking device, which includes a mounting plate, a tightening claw, a side pin, a second pulley support, and a fixed pulley;

[0016] The expansion claw is connected to the upper surface of the mounting plate, and the expansion claw is connected to the tube sheet;

[0017] The second pulley support is connected to the lower surface of the mounting plate, the fixed pulley is connected to the second pulley support, the fixed pulley and the movable pulley are connected by a pulley rope, and when the pulley rope is dragged, the mounting platform moves relative to the locking device;

[0018] The side pins are connected to the lower surface of the mounting plate, and when the locking device is placed on the mounting table, the side pins are inserted into the pin holes.

[0019] In a possible implementation manner, the length of the mounting rod is variable.

[0020] In a possible implementation manner, the mounting rod includes a plurality of interconnected segment rods.

[0021] In a possible implementation, the portion of the elastic pin extending out of one end of the rotating fork is connected to one end of a pull rope, and when the other end of the pull rope is dragged, the elastic pin comes out of the pin limiting hole.

[0022] In a possible implementation, when the other end of the pull rope is not dragged, the elastic latch is inserted into the latch limiting hole.

[0023] In a possible implementation, the mounting rod further includes: a rope clamp, the rope clamp is connected to the pulley rope, and the rope clamp can clamp and limit the dragging of the pulley rope.

[0024] In a possible implementation manner, the other end of the mounting rod is connected to a handle.

[0025] The beneficial effect of the present invention is that in the embodiment of the present invention, when the maintenance personnel need to place the equipment to be installed into the inner cavity of the water chamber head of the steam generator, the maintenance personnel can insert the elastic pin into the pin limiting hole, so that the rotating arm and the installation rod are located in the same straight line, which is convenient for sending the equipment to be installed into the inner cavity of the water chamber head of the steam generator through the hand hole at the lower part of the water chamber head of the steam generator. When the equipment to be installed is sent into the inner cavity of the water chamber head of the steam generator, the maintenance personnel can disengage the elastic pin from the pin limiting hole, so that the rotating arm falls onto the limiting block around the rotating axis under the action of gravity. Since the installation rod is inclined to the tube sheet of the inner cavity of the water chamber head of the steam generator, the angle between the rotating arm and the installation rod is an acute angle, which can facilitate the maintenance personnel to make the installation platform parallel to the tube sheet, which is beneficial to the installation of the equipment. In this way, the embodiment of the present invention can effectively improve the equipment installation efficiency of the inner cavity of the water chamber head of the steam generator, and there is no need for maintenance personnel to enter the water chamber, thereby avoiding maintenance personnel from being exposed to a larger radiation dose. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a heat transfer tube repair equipment installation tool according to an exemplary embodiment.

[0027] Figure 2 The present invention is a three-dimensional diagram of a mounting platform of a heat transfer tube repair equipment mounting tool according to an exemplary embodiment.

[0028] Figure 3 The present invention is a three-dimensional diagram of a mounting platform of a heat transfer tube repair equipment mounting tool according to an exemplary embodiment.

[0029] Figure 4 The present invention is a stereoscopic diagram of a locking device of a heat transfer tube repair equipment installation tool according to an exemplary embodiment. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Figure 1 It is a schematic diagram of a heat transfer tube repair equipment installation tool according to an exemplary embodiment. Figure 2 The present invention is a three-dimensional diagram of a mounting platform of a heat transfer tube repair equipment mounting tool according to an exemplary embodiment. Figure 3 FIG. 1 is a perspective view of a mounting platform for a heat transfer tube repair equipment mounting tool according to an exemplary embodiment. Figures 1 to 3 As shown, a heat transfer tube maintenance equipment installation tool, the heat transfer tube maintenance equipment installation tool may include: a mounting rod 3 and a mounting platform 4;

[0032] In the embodiment of the present disclosure, the quick connector can be represented as a connector that can connect or disconnect pipelines without the need for tools, and the embodiment of the present disclosure does not limit the type of the quick connector.

[0033] One end of the mounting rod 3 may be connected to a first quick connector 6, and the mounting platform 4 may include a rotating fork 12, a rotating arm 15, an extension block 17, a connector support block 19, an elastic latch 20, and a limit block 24; a quick connection hole may be provided at one end of the rotating fork 12, and the first quick connector 6 may be connected to the quick connection hole.

[0034] The other end of the rotating fork 12 is connected to one end of the rotating arm 15 through a rotating shaft; a through hole is axially provided between one end and the other end of the rotating fork 12, an elastic latch 20 is arranged in the through hole, and a latch stop hole 22 is provided at one end of the rotating arm 15. When the elastic latch 20 is inserted into the latch stop hole 22, the angle between the rotating arm 15 and the mounting rod 3 is a flat angle. When the elastic latch 20 is out of the latch stop hole 22, the rotating arm 15 can rotate around the rotating shaft;

[0035] The limit block 24 can be connected to the lower surface of the rotating fork 12, and the limit block 24 can prevent the rotating arm 15 from rotating toward the limit block 24. When the rotating arm 15 is pressed against the limit block 24, the angle between the rotating arm 15 and the mounting rod 3 is an acute angle;

[0036] The other end of the rotating arm 15 is connected to one end of the extension block 17; the other end of the extension block 17 is connected to one end of the joint support block 19, and the other end of the joint support block 19 is provided with a second quick connector 18, which is used to connect the equipment to be installed.

[0037] In the embodiment of the present disclosure, when the maintenance personnel need to place the equipment to be installed into the inner cavity of the water chamber head of the steam generator, the maintenance personnel can insert the elastic pin into the pin limiting hole so that the rotating arm and the installation rod are located in the same straight line, which is convenient for sending the equipment to be installed into the inner cavity of the water chamber head of the steam generator through the hand hole at the lower part of the water chamber head of the steam generator. When the equipment to be installed is sent into the inner cavity of the water chamber head of the steam generator, the maintenance personnel can disengage the elastic pin from the pin limiting hole, so that the rotating arm falls onto the limiting block around the rotating axis under the action of gravity. Since the installation rod is inclined to the tube sheet of the inner cavity of the water chamber head of the steam generator, the angle between the rotating arm and the installation rod is an acute angle, which can facilitate the maintenance personnel to make the installation platform parallel to the tube sheet, which is beneficial to the installation of the equipment. In this way, the embodiment of the present disclosure can effectively improve the equipment installation efficiency of the inner cavity of the water chamber head of the steam generator, and there is no need for maintenance personnel to enter the water chamber, thereby avoiding maintenance personnel from being exposed to a larger radiation dose.

[0038] Figure 4 FIG. 1 is a perspective view of a locking device for a heat transfer tube repair equipment installation tool according to an exemplary embodiment. Figure 4 As shown, in a possible implementation, the mounting platform 4 may further include: a first pulley support 16, a movable pulley 21 and a mounting support block 13; the first pulley support 16 may be connected to the extension block 17, and the movable pulley 21 is connected to the first pulley support 16; the mounting support block 13 is connected to the rotating arm 15, and the mounting support block 13 is provided with a pin hole; the heat transfer tube maintenance equipment installation tool further includes: a locking device, the locking device includes a mounting plate 30, a clamping claw 26, a side pin 27, a second pulley support 29, and a fixed pulley 25; the clamping claw 26 is connected to the upper surface of the mounting plate 30, and the clamping claw 26 is connected to the tube sheet 1;

[0039] The second pulley support 29 can be connected to the lower surface of the mounting plate 30, and the fixed pulley 25 is connected to the second pulley support 29. The fixed pulley 25 and the movable pulley 21 are connected by a pulley rope. When the pulley rope is dragged, the mounting platform 4 moves relative to the locking device. In this way, it can help maintenance personnel to more conveniently lift the equipment to be installed to the tube sheet 1 in the inner cavity of the steam generator water chamber head 2.

[0040] Before lifting the equipment to be installed, the maintenance personnel first place the locking device on the mounting table 4. The side pin 27 of the locking device can be inserted into the lower surface of the mounting plate 30. When the locking device is placed on the mounting table 4, the side pin 27 can be inserted into the pin hole of the mounting support block 13 of the mounting table 4.

[0041] In a possible implementation, the length of the mounting rod 3 is variable. For example, the mounting rod 3 includes a plurality of interconnected section rods, and the plurality of section rods can be threadedly connected to each other. The number of section rods can be selected as needed to adjust the length of the mounting rod 3.

[0042] In a possible implementation, the portion of the elastic latch 20 extending from one end of the rotating fork 12 is connected to one end of the pull rope, and when the other end of the pull rope is dragged, the elastic latch 20 is disengaged from the latch stop hole 22. In this way, it is convenient for maintenance personnel to remotely control the position of the rotating arm 15.

[0043] In an application example, the maintenance personnel can first assemble the installation long rod to the installation platform, and can place the locking device on the installation platform 4. The maintenance personnel can lift the locking device to the tube sheet 1 of the inner cavity of the steam generator water chamber head 2, pull the pull rope connected to the elastic latch 20, and pull the elastic latch 20 out of the latch limit hole 22. The rotating arm 15 can fall onto the limit block 24, so that the installation platform 4 drives the locking device to be parallel to the tube sheet 1, and the expansion claw 26 of the locking device is inserted into the through hole opened on the tube sheet 1, so that the locking device is fixed in the steam generator water chamber. Under the tube sheet 1 in the inner cavity of the head 2, the maintenance personnel can then drag the installation rod 3 to retract the installation platform 4, and loosen the pull rope so that the elastic pin 20 is inserted back into the pin limit hole 22, and the equipment to be installed can be connected to the second quick connector 18 of the installation platform 4. The maintenance personnel can pull the pulley 21 rope and push the installation rod 3 at the same time to transport the equipment to be installed to the tube sheet 1 in the inner cavity of the steam generator water chamber head 2. The maintenance personnel can pull the pull rope again to make the equipment with installation parallel to the tube sheet 1 in the inner cavity of the steam generator water chamber head 2, and install the equipment.

[0044] Similarly, by using the reverse sequence of actions to that described above, the maintenance equipment can be removed from the tube sheet 1 and moved outside the manhole.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A heat transfer tube maintenance equipment installation tool, characterized in that: The heat transfer tube maintenance equipment installation tool comprises: a mounting rod and a mounting platform; One end of the mounting rod is connected to a first quick connector; The mounting platform includes a rotating fork, a rotating arm, an extension block, a joint support block, an elastic latch, and a limit block; A quick connection hole is formed at one end of the swivel fork, and the first quick connector can be connected to the quick connection hole; The other end of the rotating fork is connected to one end of the rotating arm through a rotating shaft; A through hole is axially provided between one end and the other end of the rotating fork, the elastic latch is arranged in the through hole, a latch stop hole is arranged at one end of the rotating arm, when the elastic latch is inserted into the latch stop hole, the angle between the rotating arm and the mounting rod is a flat angle, when the elastic latch is out of the latch stop hole, the rotating arm can rotate around the rotating axis; The limit block is connected to the lower surface of the rotating fork, and the limit block can prevent the rotating arm from rotating toward the limit block. When the rotating arm is pressed against the limit block, the angle between the rotating arm and the mounting rod is an acute angle; The other end of the rotating arm is connected to one end of the extension block; The other end of the extension block is connected to one end of the joint support block, and the other end of the joint support block is provided with a second quick connector, and the second quick connector is used to connect the equipment to be installed; The mounting platform further comprises: a first pulley support, a movable pulley and a mounting support block; The first pulley support is connected to the extension block, and the movable pulley is connected to the first pulley support; The mounting support block is connected to the rotating arm, and a pin hole is provided on the mounting support block; The heat transfer tube repair equipment installation tool also includes: a locking device, which includes a mounting plate, a tightening claw, a side pin, a second pulley support, and a fixed pulley; The expansion claw is connected to the upper surface of the mounting plate, and the expansion claw is connected to the tube sheet; The second pulley support is connected to the lower surface of the mounting plate, the fixed pulley is connected to the second pulley support, the fixed pulley and the movable pulley are connected by a pulley rope, and when the pulley rope is dragged, the mounting platform moves relative to the locking device; The side pin is connected to the lower surface of the mounting plate, and when the locking device is placed on the mounting table, the side pin is inserted into the pin hole; The mounting rod may be of variable length.

2. The heat transfer tube maintenance equipment installation tool according to claim 1, characterized in that: The mounting rod comprises a plurality of interconnected segment rods.

3. The heat transfer tube repair equipment installation tool according to claim 1, characterized in that: The portion of the elastic latch extending out of one end of the rotating fork is connected to one end of the pull rope, and when the other end of the pull rope is dragged, the elastic latch comes out of the latch limiting hole.

4. The heat transfer tube repair equipment installation tool according to claim 3, characterized in that: When the other end of the pull rope is not dragged, the elastic latch is inserted into the latch limiting hole.

5. The heat transfer tube repair equipment installation tool according to claim 1, characterized in that: The mounting rod further comprises a rope clamp connected to the pulley rope, and the rope clamp is capable of clamping and limiting the dragging of the pulley rope.

6. The heat transfer tube repair equipment installation tool according to claim 1, characterized in that: The other end of the mounting rod is connected with a handle.

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