A winding gasket installation tool and installation method

Abstract

The present invention relates to the field of nuclear power technology, and particularly to a winding gasket installation tool and an installation method. The winding gasket installation tool includes a lifting member; a plurality of first connection components, and the plurality of first connection components are arranged on the lifting member at intervals along the circumferential direction of the lifting member; a plurality of first support members for supporting a first winding gasket, and the first support members are connected to the ends of the first connection components extending out relative to the lifting member; a plurality of second connection components, and the plurality of second connection components are arranged on the lifting member at intervals along the circumferential direction of the lifting member; a plurality of second support members for supporting a second winding gasket, and the second support members are connected to the ends of the second connection components extending out relative to the lifting member. The present invention can reduce the probability of damage to the winding gasket during hoisting and installation.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power, and particularly relates to a winding gasket installation tool and an installation method. Background Art

[0002] During the support process of the main pump core package of the wet-winding motor, it is necessary to disassemble and replace two metal graphite winding gaskets on the core package thermal shield (Winding gasket 1: inner diameter 1574.8 mm, outer diameter 1600.2 mm, thickness 4.5 mm; Winding gasket 2: inner diameter 1447.8 mm, outer diameter 1498.6 mm, thickness 4.5 mm). Due to process reasons, if the winding gasket is supported when the wet-winding main pump core package is in a horizontal state, the winding gasket may fall off during the subsequent flipping and hoisting of the main pump core package. Therefore, during the support process of the main pump core package, the winding gasket must be supported in the vertical direction. Since the winding gasket is relatively loose and the support position of the winding gasket is relatively high, about 6 meters or more above the chamber floor, during the support process of the main pump, the support personnel need to place the large, easily loose and bendable winding gasket at the support position in a narrow and enclosed chamber. When supporting the winding gasket under such working conditions, the traditional support method is to transport the winding gasket above the thermal shield by manpower or traditional hoisting methods and implement the support. During the hoisting and support processes, the winding gasket may be loosened, cracked, knocked, or broken, and it is easy to damage the winding gasket.

[0003] Therefore, a winding gasket installation tool and an installation method are needed to solve the above technical problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a winding gasket installation tool and an installation method, which can reduce the probability of damage to the winding gasket during the hoisting and installation processes.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A winding gasket installation tool includes:

[0007] A lifting member;

[0008] Multiple groups of first connection components, which are arranged at intervals along the circumference of the lifting member on the lifting member and extend relative to the lower end surface of the lifting member;

[0009] Multiple first support members for supporting the first winding gasket, the first support members are connected to the ends of the first connection components extending relative to the lifting member, and the multiple first support members are arranged in one-to-one correspondence with the multiple groups of first connection components, and the first support members can move relative to the first connection components;

[0010] Multiple groups of second connection components, and multiple groups of the second connection components are arranged at intervals along the circumferential direction of the lifting member and protrude relative to the lower end surface of the lifting member;

[0011] Multiple second support members for supporting the second winding pad, the second support members are connected to the ends of the second connection components that protrude relative to the lifting member, and multiple second support members are arranged in one-to-one correspondence with multiple groups of the second connection components, and the second support members can move relative to the first connection components.

[0012] Further, the first connection component includes a first connection member and a first fixing member, the first connection member is passed through the lifting member, the first support member is sleeved on the first connection member, and the first fixing member is connected to the end of the first connection member that protrudes relative to the first support member.

[0013] Further, a first strip-shaped groove is formed in the first support member, and the first support member is connected to the first connection component through the first strip-shaped groove.

[0014] Further, a first positioning pin is further included. A first blind hole is formed on one side of the first support member facing the lifting member, and one end of the first positioning pin is inserted into the first blind hole, and the first positioning pin is used for positioning the first winding pad.

[0015] Further, the second connection component includes a second connection member and a second fixing member, the second connection member is passed through the lifting member, the second support member is sleeved on the second connection member, and the second fixing member is connected to the end of the second connection member that protrudes relative to the second support member.

[0016] Further, a second strip-shaped groove is formed in the second support member, and the second support member is connected to the second connection component through the second strip-shaped groove.

[0017] Further, a second positioning pin is further included. A second blind hole is formed on one side of the second support member facing the lifting member, and one end of the second positioning pin is inserted into the second blind hole, and the second positioning pin is used for positioning the second winding pad.

[0018] Further, the lifting member includes a main body ring, multiple first connection ear plates and multiple second connection ear plates. Multiple first connection ear plates and multiple second connection ear plates are both arranged on the main body ring at equal intervals along the circumferential direction of the main body ring. The first connection ear plates and the second connection ear plates are arranged at intervals. Multiple first connection ear plates are arranged in one-to-one correspondence with the first connection components, and multiple second connection ear plates are arranged in one-to-one correspondence with the second connection components.

[0019] Furthermore, a plurality of lifting ear rings are arranged at intervals on the lifting member.

[0020] An installation method, using the above-mentioned winding gasket installation tool to install the first winding gasket and the second winding gasket, includes the following steps:

[0021] S1. Arrange a plurality of first support members on the lifting member through a plurality of first connection components, and arrange a plurality of second support members on the lifting member through a plurality of second connection components;

[0022] S2. Lift the lifting member to a set height, and move the first support member and the second support member away from the lifting member by a first set distance;

[0023] S3. Move the first winding gasket and the second winding gasket below the lifting member, and move the first support member towards the lifting member by a second set distance so that the first winding gasket is supported on the first support member; move the second support member towards the lifting member by the second set distance so that the second winding gasket is supported on the second support member;

[0024] S4. Control the lifting member to descend through the hydraulic components of the main pump core package, and stop descending when the first support member is at a third set distance from the thermal shield;

[0025] S5. Move the first support member away from the lifting member by the first set distance, install the first winding gasket into the first groove of the thermal shield, move the second support member away from the lifting member by the first set distance, and install the second winding gasket into the second groove of the thermal shield;

[0026] S6. Lift the lifting member away to complete the installation of the first winding gasket and the second winding gasket.

[0027] Advantages of the present invention:

[0028] For a winding gasket installation tool provided by the present invention, a plurality of first support members are arranged on the lifting member through the first connection components, and a plurality of second support members are arranged on the lifting member through the second connection components. The first winding gasket is supported by the plurality of first support members, and the second winding gasket is supported by the plurality of second support members. During installation, the lifting member is directly lifted. Due to the supporting effects of the first support member and the second support member, the winding gasket is prevented from being loosened, cracked, knocked, and broken, thereby reducing the probability of damage to the winding gasket during hoisting and installation.

[0029] For an installation method provided by the present invention, using the above-mentioned winding gasket installation tool to install the first winding gasket and the second winding gasket can reduce the probability of damage to the winding gasket during hoisting and installation. Brief Description of the Drawings

[0030] Figure 1 is a top view of an installation tool for a spiral wound gasket according to the present invention;

[0031] Figure 2 is a bottom view of an installation tool for a spiral wound gasket according to the present invention;

[0032] Figure 3 is Figure 1 the sectional view taken along line A-A in

[0033] Figure 4 is Figure 1 the sectional view taken along line B-B in

[0034] In the figures:

[0035] 1. Lifting member; 11. Main body ring; 12. Second connecting ear plate; 13. First connecting ear plate; 2. First connecting assembly; 21. First connecting member; 22. First fixing member; 3. First supporting member; 31. First rubber pad; 32. First positioning pin; 33. First strip-shaped groove; 4. Second connecting assembly; 41. Second connecting member; 42. Second fixing member; 5. Second supporting member; 51. Second rubber pad; 52. Second positioning pin; 53. Second strip-shaped groove; 6. Lifting earring; 7. Second spiral wound gasket; 8. First spiral wound gasket. Detailed Description of the Preferred Embodiments

[0036] The technical solution of the present invention will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention, rather than limiting the present invention. In addition, it should be noted that only the parts related to the present invention are shown in the drawings for the convenience of description, rather than all of them.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "support", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection or a detachable connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0039] During the support process of the main pump core package of a wet-winding motor, it is necessary to disassemble and replace two metal-graphite wound gaskets on the core package thermal shield. In order to reduce the probability of damage to the wound gasket during lifting and installation, as Figures 1-4 shown, the present invention provides a wound gasket installation tool. The wound gasket installation tool includes a lifting member 1, multiple groups of first connection components 2, multiple first support members 3, multiple groups of second connection components 4 and multiple second support members 5.

[0040] Among them, multiple groups of first connection components 2 are arranged at intervals along the circumferential direction of the lifting member 1 on the lifting member 1, and the first connection components 2 extend out relative to the lower end surface of the lifting member 1; multiple first support members 3 are used to support the first wound gasket 8, the first support members 3 are connected to the end of the first connection components 2 that extends out relative to the lifting member 1, multiple first support members 3 are arranged in one-to-one correspondence with multiple groups of first connection components 2, and the first support members 3 can move relative to the first connection components 2; multiple groups of second connection components 4 are arranged at intervals along the circumferential direction of the lifting member 1 on the lifting member 1, and the second connection components 4 extend out relative to the lower end surface of the lifting member 1; multiple second support members 5 are used to support the second wound gasket 7, the second support members 5 are connected to the end of the second connection components 4 that extends out relative to the lifting member 1, multiple second support members 5 are arranged in one-to-one correspondence with multiple groups of second connection components 4, and the second support members 5 can move relative to the first connection components 2.

[0041] The first wound gasket 8 is supported by multiple first support members 3, and the second wound gasket 7 is supported by multiple second support members 5. During installation, the lifting member 1 is directly lifted. Due to the supporting effect of the first support members 3 and the second support members 5, the wound gasket is prevented from being loosened, cracked, knocked and broken; during the lifting process, the first support members 3 support the first wound gasket 8, and the second support members 5 support the second wound gasket 7. After being hoisted in place, the first support members 3 are moved to install the first wound gasket 8, and the second support members 5 are moved to install the second wound gasket 7, which can reduce the probability of damage to the wound gasket during lifting and installation.

[0042] Further, the first connection component 2 includes a first connecting piece 21 and a first fixing piece 22. The first connecting piece 21 is passed through the lifting piece 1, the first support piece 3 is sleeved on the first connecting piece 21, and the first fixing piece 22 is connected to one end of the first connecting piece 21 extending relative to the first support piece 3. In this embodiment, the first connecting piece 21 is a bolt, and the first fixing piece 22 is a nut. One end of the bolt passes through the lifting piece 1, the first support piece 3 is sleeved on the bolt, and then the nut is installed at the lower end, so as to install the first support piece 3 in place.

[0043] Further, a first strip-shaped groove 33 is formed in the first support piece 3, and the first support piece 3 is connected to the first connection component 2 through the first strip-shaped groove 33. By providing the first strip-shaped groove 33, it is convenient for the first support piece 3 to move or rotate relative to the first connecting piece 21, so as to facilitate the adjustment of the position of the first support piece 3 during the process of supporting and installing the first winding gasket 8.

[0044] Further, the winding gasket installation tool further includes a first positioning pin 32. A first blind hole is formed on one side of the first support piece 3 facing the lifting piece 1. One end of the first positioning pin 32 is inserted into the first blind hole, and the first positioning pin 32 is used to position the first winding gasket 8. Specifically, after the first winding gasket 8 is supported on the first support piece 3, the first positioning pin 32 is inserted. The first positioning pin 32 contacts the inner ring of the first winding gasket 8, so as to limit the first winding gasket 8, so that the first winding gasket 8 is in a stable annular state, and the first winding gasket 8 is stably arranged on the first support piece 3. During the hoisting process, the first winding gasket 8 will not crack, bump or break.

[0045] Further, the second connection component 4 includes a second connecting piece 41 and a second fixing piece 42. The second connecting piece 41 is passed through the lifting piece 1, the second support piece 5 is sleeved on the second connecting piece 41, and the second fixing piece 42 is connected to one end of the second connecting piece 41 extending relative to the second support piece 5. In this embodiment, the second connecting piece 41 is a bolt, and the second fixing piece 42 is a nut. One end of the bolt passes through the lifting piece 1, the second support piece 5 is sleeved on the bolt, and then the nut is installed at the lower end, so as to install the second support piece 5 in place.

[0046] Further, a second strip-shaped groove 53 is formed in the second support piece 5, and the second support piece 5 is connected to the second connection component 4 through the second strip-shaped groove 53. By providing the second strip-shaped groove 53, it is convenient for the second support piece 5 to move or rotate relative to the second connecting piece 41, so as to facilitate the adjustment of the position of the second support piece 5 during the process of supporting and installing the second winding gasket 7.

[0047] Further, the winding gasket installation tool further includes a second positioning pin 52. A second blind hole is formed on one side of the second support member 5 facing the lifting member 1. One end of the second positioning pin 52 is inserted into the second blind hole, and the second positioning pin 52 is used to position the second winding gasket 7. Specifically, after the second winding gasket 7 is supported on the second support member 5, the second positioning pin 52 is inserted. The second positioning pin 52 contacts the inner ring of the second winding gasket 7, thereby limiting the second winding gasket 7 and making the second winding gasket 7 in a stable annular state. The second winding gasket 7 is stably arranged on the second support member 5, and the second winding gasket 7 will not crack, collide or break during the hoisting process.

[0048] Further, the lifting member 1 includes a main body ring 11, a plurality of first connecting ear plates 13 and a plurality of second connecting ear plates 12. The plurality of first connecting ear plates 13 and the plurality of second connecting ear plates 12 are both arranged on the main body ring 11 at equal intervals along the circumferential direction of the main body ring 11. The first connecting ear plates 13 and the second connecting ear plates 12 are arranged at intervals. The plurality of first connecting ear plates 13 are arranged in one-to-one correspondence with the first connecting components 2, and the plurality of second connecting ear plates 12 are arranged in one-to-one correspondence with the second connecting components 4. Through the above settings, it can be ensured that the structure of the lifting member 1 is simple and the weight is light, which is convenient for manufacturing. In this embodiment, four first connecting ear plates 13 and four second connecting ear plates 12 are provided. In other embodiments, they can be set as needed, and no excessive limitation is made here.

[0049] Further, a plurality of lifting ear rings 6 are arranged on the lifting member 1 at intervals. Specifically, threaded holes are formed on the lifting member 1, and the lifting ear rings 6 are screwed to the threaded holes. In this embodiment, the lifting ear rings 6 are arranged at equal intervals along the circumferential direction of the lifting member 1, which can ensure the stability of the lifting member 1 during the lifting process.

[0050] Compared with the traditional manual installation method, the use of this winding gasket installation tool can install two winding gaskets at the same time, and can protect the winding gaskets during the hoisting and installation processes, avoiding the phenomena of loosening, collision and breakage of the winding gaskets during transportation and installation, and reducing the probability of damage to the winding gaskets during the vertical installation on large vertical pumps.

[0051] This embodiment also provides an installation method for installing the first winding gasket 8 and the second winding gasket 7 by using the above winding gasket installation tool, including the following steps:

[0052] S1. Arrange a plurality of first support members 3 on the lifting member 1 through a plurality of groups of first connecting components 2, and arrange a plurality of second support members 5 on the lifting member 1 through a plurality of groups of second connecting components 4; paste a first rubber pad 31 on the upper end surface of the first support member 3 with sealant, and paste a second rubber pad 51 on the upper end surface of the second support member 5 with sealant. The first rubber pad 31 and the second rubber pad 51 play a protective role for the first winding gasket 8 and the second winding gasket 7.

[0053] S2. Lift the lifting member 1 to a set height, and move the first support member 3 and the second support member 5 away from the lifting member 1 by a first set distance.

[0054] S3. Move the first winding pad 8 and the second winding pad 7 below the lifting member 1, and move the first support member 3 towards the lifting member 1 by a second set distance so that the first winding pad 8 is supported on the first support member 3; move the second support member 5 towards the lifting member 1 by a second set distance so that the second winding pad 7 is supported on the second support member 5; specifically, two maintenance personnel apply a small amount of lubricant on the first winding pad 8 and the second winding pad 7 in sequence, place them below the lifting member 1, and a third maintenance personnel moves the first support member 3 and the second support member 5 towards the center of the lifting member 1. After confirming that the first winding pad 8 and the second winding pad 7 are in place, tighten the first fixing member 22 and the second fixing member 42, and then install the first positioning pin 32 and the second positioning pin 52 in place.

[0055] S4. Control the lifting member 1 to descend through the hydraulic components of the main pump core package. When the first support member 3 is at a third set distance from the thermal shield, stop descending; specifically, in this embodiment, the third set distance is 1 centimeter. Apply lubricant to both the first groove and the second groove of the thermal shield. The maintenance personnel climb onto the movable scaffolding, come to one side of the thermal shield, and continue to operate the installation tools.

[0056] S5. Move the first support member 3 away from the lifting member 1 by a first set distance, install the first winding pad 8 into the first groove of the thermal shield, move the second support member 5 away from the lifting member 1 by a first set distance, and install the second winding pad 7 into the second groove of the thermal shield; specifically, loosen the first fastener, use one hand to move the first support member 3 outwards, and use the other hand to hold the first winding pad 8, and slowly place the first winding pad 8 into the first groove on the upper surface of the thermal shield. Using the same operation method, move the movable scaffolding to operate on the other first support members 3 in sequence until the first winding pad 8 is completely installed into the first groove. Similarly, install the second winding pad 7 in the above manner.

[0057] S6. Lift the lifting member 1 away to complete the installation of the first winding pad 8 and the second winding pad 7. Specifically, after the operation is completed, lift away the winding pad installation tool, steady the first winding pad 8 and the second winding pad 7 by hand, and confirm that all four sides of the first winding pad 8 have been buckled into the first groove on the upper surface of the thermal shield, and all four sides of the second winding pad 7 have been buckled into the second groove on the upper surface of the thermal shield.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. An installation method, characterized in that, Install the first spiral wound gasket (8) and the second spiral wound gasket (7) by using a spiral wound gasket installation tool; the spiral wound gasket installation tool includes: A lifting member (1); Multiple groups of first connection components (2), the multiple groups of first connection components (2) are arranged at intervals along the circumference of the lifting member (1) on the lifting member (1), and extend out relative to the lower end surface of the lifting member (1); Multiple first support members (3) for supporting the first spiral wound gasket (8), the first support members (3) are connected to the end of the first connection components (2) that extends out relative to the lifting member (1), the multiple first support members (3) are arranged in one-to-one correspondence with the multiple groups of first connection components (2), and the first support members (3) can move relative to the first connection components (2); Multiple groups of second connection components (4), the multiple groups of second connection components (4) are arranged at intervals along the circumference of the lifting member (1) on the lifting member (1), and extend out relative to the lower end surface of the lifting member (1); Multiple second support members (5) for supporting the second spiral wound gasket (7), the second support members (5) are connected to the end of the second connection components (4) that extends out relative to the lifting member (1), the multiple second support members (5) are arranged in one-to-one correspondence with the multiple groups of second connection components (4), and the second support members (5) can move relative to the first connection components (2); The installation method includes the following steps: S1. Arrange the multiple first support members (3) on the lifting member (1) through the multiple groups of first connection components (2), and arrange the multiple second support members (5) on the lifting member (1) through the multiple groups of second connection components (4); S2. Lift the lifting member (1) to a set height, and move the first support member (3) and the second support member (5) in a direction away from the lifting member (1) by a first set distance; S3. Move the first spiral wound gasket (8) and the second spiral wound gasket (7) below the lifting member (1), move the first support member (3) in the direction of the lifting member (1) by a second set distance so that the first spiral wound gasket (8) is supported on the first support member (3); move the second support member (5) in the direction of the lifting member (1) by the second set distance so that the second spiral wound gasket (7) is supported on the second support member (5); S4. Control the lifting member (1) to descend through the hydraulic components of the main pump core package, and stop descending when the first support member (3) is at a third set distance from the thermal shield; S5. Move the first support member (3) in a direction away from the lifting member (1) by the first set distance, install the first spiral wound gasket (8) into the first groove of the thermal shield, move the second support member (5) in a direction away from the lifting member (1) by the first set distance, and install the second spiral wound gasket (7) into the second groove of the thermal shield; S6. Lift the lifting member (1) away to complete the installation of the first spiral wound gasket (8) and the second spiral wound gasket (7).

2. The installation method according to claim 1, characterized in that, The first connection component (2) includes a first connecting piece (21) and a first fixing piece (22). The first connecting piece (21) is passed through the lifting piece (1), the first supporting piece (3) is sleeved on the first connecting piece (21), and the first fixing piece (22) is connected to one end of the first connecting piece (21) that extends out relative to the first supporting piece (3).

3. The installation method according to claim 1, characterized in that A first strip-shaped groove (33) is formed in the first supporting piece (3), and the first supporting piece (3) is connected to the first connection component (2) through the first strip-shaped groove (33).

4. The installation method according to claim 1, characterized in that, It further includes a first positioning pin (32). A first blind hole is formed in one side of the first supporting piece (3) facing the lifting piece (1). One end of the first positioning pin (32) is inserted into the first blind hole, and the first positioning pin (32) is used to position the first winding pad (8).

5. A mounting method according to claim 1, characterized in that, The second connection component (4) includes a second connecting piece (41) and a second fixing piece (42). The second connecting piece (41) is passed through the lifting piece (1), the second supporting piece (5) is sleeved on the second connecting piece (41), and the second fixing piece (42) is connected to one end of the second connecting piece (41) that extends out relative to the second supporting piece (5).

6. The installation method according to claim 1, characterized in that A second strip-shaped groove (53) is formed in the second supporting piece (5), and the second supporting piece (5) is connected to the second connection component (4) through the second strip-shaped groove (53).

7. The installation method according to claim 1, characterized in that, It further includes a second positioning pin (52). A second blind hole is formed in one side of the second supporting piece (5) facing the lifting piece (1). One end of the second positioning pin (52) is inserted into the second blind hole, and the second positioning pin (52) is used to position the second winding pad (7).

8. A mounting method according to claim 1, characterized in that, The lifting piece (1) includes a main body ring (11), a plurality of first connecting ear plates (13) and a plurality of second connecting ear plates (12). The plurality of first connecting ear plates (13) and the plurality of second connecting ear plates (12) are all arranged on the main body ring (11) at equal intervals along the circumferential direction of the main body ring (11). The first connecting ear plates (13) and the second connecting ear plates (12) are arranged at intervals. The plurality of first connecting ear plates (13) are arranged in one-to-one correspondence with the first connection component (2), and the plurality of second connecting ear plates (12) are arranged in one-to-one correspondence with the second connection component (4).

9. A mounting method according to claim 1, characterized in that, A plurality of lifting ear rings (6) are arranged at intervals on the lifting piece (1).

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