A generator output circuit breaker auxiliary installation device and use method

Abstract

The present invention relates to the technical field of generator outlet circuit breakers, and specifically discloses an auxiliary installation device for generator outlet circuit breakers and a method for using the device. The device includes a support beam, a steel plate, a longitudinal beam and a cross beam, wherein a plurality of the support beams are interconnected by a plurality of the longitudinal beams and cross beams to form a platform frame structure on which the steel plate is fixed, and the platform frame can support the weight of the generator outlet circuit breaker to be removed or installed; two mutually parallel ground guide rails are provided on the steel plate, and the center width of the two ground guide rails matches the center width of the circuit breaker legs, and a hand winch traction point is provided at one end of the platform frame structure. The present invention can reduce the risk of equipment installation, improve maintenance efficiency, and at the same time avoid the hidden danger of suspended oblique pulling during the installation of the generator outlet circuit breaker, thereby ensuring the smooth implementation of the replacement of the generator outlet circuit breaker.

Description

Technical Field

[0001] The invention belongs to the technical field of generator outlet circuit breakers, and in particular relates to an auxiliary installation device for a generator outlet circuit breaker and a use method thereof. Background Art

[0002] Generator outlet circuit breaker (GCB for short), as an important device connecting the generator and the main transformer, cuts off the connection between the generator and the system during synchronous grid connection and abnormal working conditions, and plays an important role in protecting the safety of the system and equipment. However, with the increase of system short-circuit capacity or the aging and failure rate of the original equipment, it is often necessary to replace the original GCB. However, the GCB is usually arranged above a steel platform at a certain height from the ground, and above the GCB is a concrete platform on the floor where the main generator is located. Due to the layout of the confined space, during the replacement of the GCB, the removal of the old equipment and the installation of the new equipment cannot be hoisted using the crane above the conventional island plant, nor can it be directly dragged out in the horizontal direction, which brings certain difficulties to the replacement of the GCB. Now, a generator outlet circuit breaker auxiliary installation device is designed, and the use method is given. Summary of the invention

[0003] The purpose of the present invention is to provide a generator outlet circuit breaker auxiliary installation device and a use method to solve the problems of difficulty in dismantling and installing the existing generator outlet circuit breaker or the hidden danger of hanging and oblique pulling during the construction process.

[0004] The technical solution of the present invention is as follows: a generator output circuit breaker auxiliary installation device, the device includes a support beam, a steel plate, a longitudinal beam and a transverse beam, wherein a plurality of the support beams are interconnected by a plurality of the longitudinal beams and the transverse beams to form a platform frame structure on which the steel plate is fixed, and the platform frame can support the weight of the GCB to be removed or installed; two mutually parallel ground bull rails are provided on the above-mentioned steel plate, and the center width of the two ground bull rails matches the center width of the GCB support legs.

[0005] The platform frame includes 4 longitudinal beams and 8 transverse beams, among which 2 longitudinal beams are parallel to each other and constitute the two long sides of the lower end face of the platform frame, and the 4 transverse beams are vertically connected to the 2 longitudinal beams, and the spacing between any two transverse beams is the same; the upper end face of the platform frame has the same structure as the lower end face, and is fixedly connected by a number of support beams.

[0006] The platform frame includes 12 support beams, which are located at both ends and the center of the cross beam.

[0007] The platform frame also includes 8 diagonal bracing beams for reinforcing the platform frame.

[0008] The platform frame is made of No. 16 I-beam, the steel material is Q235, and any connection is fixed by welding. The weld height of the connection is the minimum thickness of the steel plate at the welding point.

[0009] The ground bull guide rail is formed by spot welding No. 4 angle steel on the steel plate along the longitudinal direction; the width of the ground bull guide rail is not less than 320mm and the length is 4200mm.

[0010] A hand chain hoist fixing point is provided at the transverse end surface of one side of the steel plate; the thickness of the steel plate is 10 mm.

[0011] A method for using a generator outlet circuit breaker auxiliary installation device, the method comprising:

[0012] S1. Use the auxiliary installation device of the generator output circuit breaker to dismantle the old GCB;

[0013] S1.1. Connect the auxiliary installation device of the generator outlet circuit breaker to the platform where the old GCB to be removed is located;

[0014] S1.2. Replace the old GCB to be removed onto the ground bull, and adjust the ground bull's travel direction to be in the same straight line with the guide rail of the GCB auxiliary installation device;

[0015] S1.3. A traction hand chain hoist is installed in the direction of travel of the old GCB to be dismantled, and a brake hand chain hoist is installed behind the direction of travel of the old GCB;

[0016] S1.4. Use the traction hand chain hoist and the brake hand chain hoist to slowly move the old GCB to the platform of the auxiliary installation device of the generator output circuit breaker, and use the equipment therein to lift the old GCB away to complete the removal;

[0017] S2. Install the new GCB using the generator outlet circuit breaker auxiliary installation device;

[0018] S2.1. Connect the auxiliary installation device of the generator outlet circuit breaker to the platform where the new GCB is to be installed;

[0019] S2.2. Hoist the new GCB onto the guide rail of the auxiliary installation device of the generator output circuit breaker, and make the guide rail and the travel direction of the new GCB to be installed in a straight line;

[0020] S2.3. A traction chain hoist shall be installed in the direction of travel of the new GCB and a brake chain hoist shall be installed in the rear direction of travel;

[0021] S2.4. Use the traction hand chain hoist and the brake hand chain hoist to slowly move the new GCB to the installation position to complete the installation.

[0022] The specific steps of removing the old GCB using the generator outlet circuit breaker auxiliary installation device include:

[0023] S1.1. Connect the auxiliary installation device of the generator outlet circuit breaker to the platform where the old GCB to be removed is located;

[0024] Connect the auxiliary installation device of the generator outlet circuit breaker to the steel platform where the old GCB is located, and adjust the height of the sleepers under the auxiliary installation device of the generator outlet circuit breaker so that the installation device and the steel platform where the circuit breaker to be removed is located are on the same horizontal plane;

[0025] S1.2. Replace the old GCB to be removed onto the ground bull, and adjust the ground bull's travel direction to align with the guide rail in the auxiliary installation device of the generator output circuit breaker;

[0026] Use a hydraulic jack to lift up the old GCB to be removed, and set a ground bull underneath. Adjust the direction of the ground bull so that the direction of the ground bull is in the same straight line with the guide rail in the auxiliary installation device of the generator output circuit breaker, and mark the travel track;

[0027] S1.3. A traction hand chain hoist is installed in the direction of travel of the old GCB to be dismantled, and a brake hand chain hoist is installed behind the direction of travel of the old GCB;

[0028] A 2t traction chain hoist is set in the travel direction of the old GCB, wherein the traction chain hoist is fixed to the chain hoist fixing point of the auxiliary installation device of the generator outlet circuit breaker, and the traction chain hoist is connected to the old GCB through a sling;

[0029] A 2t brake chain hoist is set in the opposite direction of the old GCB's travel, wherein the brake chain hoist is fixed on the load-bearing member of the steel platform where the old GCB is located, and the brake chain hoist is connected to the old GCB through a sling;

[0030] S1.4. Use the traction hand chain hoist and the brake hand chain hoist to slowly move the old GCB to the platform of the auxiliary installation device of the generator output circuit breaker to complete the removal;

[0031] Pull the traction chain hoist in front of the old GCB to be removed, and at the same time, slowly release the brake chain hoist to make the old GCB to be removed move slowly. During the movement of the old GCB, monitor whether the moving track of the ground bull is consistent with the marked track. If there is a deviation, make adjustments in time;

[0032] When the old GCB is completely moved to the auxiliary installation device of the generator output circuit breaker, the old GCB is lifted to the transport vehicle using the crane above the conventional island plant to complete the dismantling work.

[0033] The specific steps of installing a new GCB using the generator output circuit breaker auxiliary installation device are as follows:

[0034] S2.1. Connect the auxiliary installation device of the generator outlet circuit breaker to the platform where the new GCB is to be installed;

[0035] Connect the auxiliary installation device of the generator outlet circuit breaker to the steel platform where the new GCB is to be installed, and adjust the height of the sleepers under the auxiliary installation device of the generator outlet circuit breaker so that the installation device and the steel platform where the old GCB is to be removed are at the same level. If this work has been completed during removal, this step can be omitted;

[0036] S2.2. Place the new GCB on the guide rail of the auxiliary installation device of the generator output circuit breaker, and make the guide rail and the travel direction of the GCB to be installed in a straight line;

[0037] Align the guide rail in the auxiliary installation device of the generator outlet circuit breaker with the position where the new GCB is to be installed, and set the ground bull on the guide rail of the auxiliary installation device of the generator outlet circuit breaker;

[0038] Use the crane above the conventional island plant to lift the new GCB to the ground bull on the guide rail, where the ground bull is located directly below the new GCB legs;

[0039] S2.3. A traction hand chain hoist is installed in the direction of travel of the new GCB, and a brake hand chain hoist is installed at the rear of the travel;

[0040] A 2t traction chain hoist is set in the direction of travel of the new GCB, wherein the traction chain hoist is fixed on the load-bearing member of the steel platform where the GCB is located, and the traction chain hoist is connected to the new GCB through a sling;

[0041] A 2t brake chain hoist is installed in the opposite direction of the new GCB, wherein the brake chain hoist is fixed to the chain hoist fixing point of the auxiliary installation device of the generator output circuit breaker, and the brake chain hoist is connected to the new GCB through a sling;

[0042] S2.4. Use the traction hand chain hoist and the brake hand chain hoist to slowly move the new GCB to the installation position to complete the installation;

[0043] Pull the traction chain hoist in front of the new GCB, and at the same time, slowly release the brake chain hoist to make the GCB move slowly. During the movement of the new GCB, monitor whether the moving track of the ground bull is consistent with the marked track. If there is a deviation, make adjustments in time;

[0044] When the new GCB is transported to the installation location, use a jack or hang four hand hoists on the steel beam above the circuit breaker to lift it. When it is lifted to a certain height, add new legs to the new GCB and adjust the level to complete the installation of the new circuit breaker.

[0045] The significant effect of the present invention is that the auxiliary installation device and use method of the generator output circuit breaker described in the present invention can reduce the risk of equipment installation, improve maintenance efficiency, and at the same time avoid the hidden danger of hanging and oblique pulling during the GCB installation process, thereby ensuring the smooth implementation of the GCB replacement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic structural diagram of an auxiliary installation device for a generator output circuit breaker according to the present invention;

[0047] Figure 2 A schematic diagram of removing a GCB from a generator output circuit breaker auxiliary installation device according to the present invention;

[0048] Figure 3 A schematic diagram of installing a new GCB for a generator output circuit breaker auxiliary installation device according to the present invention;

[0049] In the figure: 1. Hand chain hoist fixing point; 2. Ground bull guide rail; 3. Support beam; 4. Steel plate; 5. Longitudinal beam; 6. Diagonal bracing beam; 7. Cross beam. DETAILED DESCRIPTION

[0050] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] like Figure 1As shown, an auxiliary installation device for a generator output circuit breaker includes a support beam 3, a steel plate 4, a longitudinal beam 5, a diagonal bracing beam 6 and a cross beam 7, wherein a plurality of support beams 3 are interconnected through a plurality of longitudinal beams 5, diagonal bracing beams 6 and cross beams 7 to form a support frame structure, and a steel plate 4 of a flat plate structure is fixedly installed on the frame structure to form a support platform for the circuit breaker; for example, the frame structure includes 4 longitudinal beams 5 and 8 cross beams 7, wherein 2 longitudinal beams 5 are parallel to each other to form two long sides of the lower end face of the frame structure, and 4 cross beams 7 of the same length are vertically welded to the above-mentioned 2 longitudinal beams 5, and the spacing of the 4 cross beams on the longitudinal beams 5 is kept consistent; the upper end of the frame structure has the same structure as the lower end, and is interconnected through 12 support beams 3 The ends and center positions of the four cross beams 7 on the same plane are welded and fixed to the support beam 3 to form a frame structure, and a number of diagonal bracing beams 6 are welded in the frame structure; the support beam 3, the longitudinal beam 5, the diagonal bracing beam 6 and the cross beam 7 are all No. 16 I-beams, the steel material is Q235, and the height of the welding weld at the connection is the minimum thickness of the steel plate at the welding point; a 10mm steel plate 4 is welded and fixed on the frame structure, and a ground bull guide rail 2 with a width of 320mm and a length of 4200mm is spot welded on the steel plate 4 along the longitudinal direction using No. 4 angle steel, and the center width of the ground bull guide rail 2 is consistent with the center width of the GCB leg, for example, the center width of the ground bull guide rail 2 is 2950mm; a hand chain hoist fixing point 1 is provided at the lateral position on the left side of the steel plate 4;

[0052] like Figure 2 , Figure 3 As shown, a method for using a generator output circuit breaker auxiliary installation device, the method specifically includes:

[0053] S1. Use the auxiliary installation device of the generator output circuit breaker to dismantle the old GCB;

[0054] S1.1. Connect the auxiliary installation device of the generator outlet circuit breaker to the platform where the old GCB to be removed is located;

[0055] S1.2. Replace the old GCB to be removed onto the ground bull, and adjust the ground bull's travel direction to be in the same straight line with the guide rail of the GCB auxiliary installation device;

[0056] S1.3. A traction hand chain hoist is installed in the direction of travel of the old GCB to be dismantled, and a braking hand chain hoist is installed behind the direction of travel of the GCB;

[0057] S1.4. Use the traction hand chain hoist and the brake hand chain hoist to slowly move the old GCB to the platform of the auxiliary installation device of the generator output circuit breaker, and use the equipment therein to lift the old GCB away to complete the removal;

[0058] S2. Install the new GCB using the generator outlet circuit breaker auxiliary installation device;

[0059] S2.1. Connect the auxiliary installation device of the generator outlet circuit breaker to the platform where the new GCB is to be installed;

[0060] S2.2. Hoist the new GCB onto the guide rail of the auxiliary installation device of the generator output circuit breaker, and make the guide rail and the travel direction of the new GCB to be installed in a straight line;

[0061] S2.3. A traction chain hoist shall be installed in the direction of travel of the new GCB and a brake chain hoist shall be installed in the rear direction of travel;

[0062] S2.4. Use the traction hand chain hoist and the brake hand chain hoist to slowly move the new GCB to the installation position to complete the installation.

[0063] The specific steps of removing the old GCB using the generator outlet circuit breaker auxiliary installation device include:

[0064] S1.1. Connect the auxiliary installation device of the generator outlet circuit breaker to the platform where the old GCB to be removed is located;

[0065] Connect the auxiliary installation device of the generator outlet circuit breaker to the steel platform where the old GCB is located, and adjust the height of the sleepers under the auxiliary installation device of the generator outlet circuit breaker so that the installation device and the steel platform where the old GCB to be removed is located are at the same level;

[0066] S1.2. Replace the old GCB to be removed onto the ground bull, and adjust the ground bull's travel direction to align with the guide rail in the auxiliary installation device of the generator output circuit breaker;

[0067] Use hydraulic jack to lift up the old GCB that has been removed, and set a ground bull underneath. Adjust the direction of the ground bull and make it in the same straight line with the guide rail in the auxiliary installation device of the generator output circuit breaker, and mark the travel track;

[0068] S1.3. A traction hand chain hoist is provided in the direction of travel of the GCB for dismantling, and a braking hand chain hoist is provided behind the direction of travel of the GCB;

[0069] A 2t traction chain hoist is set in the travel direction of the old GCB, wherein the traction chain hoist is fixed to the chain hoist fixing point of the auxiliary installation device of the generator outlet circuit breaker, and the traction chain hoist is connected to the old GCB through a sling;

[0070] A 2t brake chain hoist is set in the opposite direction of the old GCB, wherein the brake chain hoist is fixed on the load-bearing member of the steel platform where the GCB is located, and the brake chain hoist is connected to the old GCB through a sling;

[0071] S1.4. Use the traction hand chain hoist and the brake hand chain hoist to slowly move the old GCB to the platform of the auxiliary installation device of the generator output circuit breaker to complete the removal;

[0072] Pull the traction chain hoist in front of the old GCB to be removed, and at the same time, slowly release the brake chain hoist to make the old GCB to be removed move slowly. During the movement of the old GCB, monitor whether the moving track of the ground bull is consistent with the marked track. If there is a deviation, make adjustments in time;

[0073] When the old GCB is completely moved to the auxiliary installation device of the generator output circuit breaker, the old GCB is lifted to the transport vehicle using the crane above the conventional island plant to complete the dismantling work.

[0074] The specific steps of installing a new GCB using the generator output circuit breaker auxiliary installation device are as follows:

[0075] S2.1. Connect the auxiliary installation device of the generator outlet circuit breaker to the platform where the new GCB is to be installed;

[0076] Connect the auxiliary installation device of the generator outlet circuit breaker to the steel platform where the new GCB is to be installed, and adjust the height of the sleepers under the auxiliary installation device of the generator outlet circuit breaker so that the installation device and the steel platform where the old GCB is to be removed are at the same level. If this work has been completed during removal, this step can be omitted;

[0077] S2.2. Place the new GCB on the guide rail of the auxiliary installation device of the generator output circuit breaker, and make the guide rail and the travel direction of the GCB to be installed in a straight line;

[0078] Align the guide rail in the auxiliary installation device of the generator outlet circuit breaker with the position where the new GCB is to be installed, and set the ground bull on the guide rail of the auxiliary installation device of the generator outlet circuit breaker;

[0079] Use the crane above the conventional island plant to lift the new GCB to the ground bull on the guide rail, where the ground bull is located directly below the circuit breaker legs;

[0080] S2.3. A traction hand chain hoist is installed in the direction of travel of the new GCB, and a brake hand chain hoist is installed at the rear of the travel;

[0081] A 2t traction chain hoist is set in the direction of travel of the new GCB, wherein the traction chain hoist is fixed on the load-bearing member of the steel platform where the GCB is located, and the traction chain hoist is connected to the new GCB through a sling;

[0082] A 2t brake chain hoist is installed in the opposite direction of the new GCB, wherein the brake chain hoist is fixed to the chain hoist fixing point of the auxiliary installation device of the generator output circuit breaker, and the brake chain hoist is connected to the new GCB through a sling;

[0083] S2.4. Use the traction hand chain hoist and the brake hand chain hoist to slowly move the new GCB to the installation position to complete the installation;

[0084] Pull the traction chain hoist in front of the new GCB, and at the same time, slowly release the brake chain hoist to make the new GCB move slowly. During the movement of the new GCB, monitor whether the moving track of the ground bull is consistent with the marked track. If there is a deviation, make adjustments in time;

[0085] When the new GCB is transported to the installation location, it is lifted using a jack or by hanging four hand hoists on the steel beam above the new GCB. When it is lifted to a certain height, new legs are added to the new GCB and the level is adjusted to complete the installation of the new GCB.

Claims

1. A method for using a generator output circuit breaker auxiliary installation device, characterized in that: The method includes: A generator outlet circuit breaker auxiliary installation device, the device comprising a support beam (3), a steel plate (4), a longitudinal beam (5) and a transverse beam (7), wherein a plurality of the support beams (3) are interconnected via a plurality of the longitudinal beams (5) and the transverse beams (7) to form a platform frame structure on which the steel plate (4) is fixed, and the platform frame is capable of supporting the weight of the generator outlet circuit breaker to be removed or installed; two mutually parallel ground guide rails (2) are provided on the steel plate (4), and the center width of the two ground guide rails (2) matches the center width of the legs of the generator outlet circuit breaker; S1. Use the auxiliary installation device of the generator output circuit breaker to dismantle the old GCB; S1.

1. Connect the auxiliary installation device of the generator outlet circuit breaker to the platform where the old GCB to be removed is located; S1.

2. Replace the old GCB to be removed onto the ground bull, and adjust the ground bull's travel direction to be in the same straight line as the guide rail of the auxiliary installation device of the generator output circuit breaker; S1.

3. A traction hand chain hoist is installed in the direction of travel of the old GCB to be dismantled, and a brake hand chain hoist is installed behind the direction of travel of the old GCB; S1.

4. Use the traction hand chain hoist and the brake hand chain hoist to slowly move the old GCB to the platform of the auxiliary installation device of the generator output circuit breaker, and use the equipment to lift the old GCB away to complete the removal; S2. Install the new GCB using the generator outlet circuit breaker auxiliary installation device; S2.

1. Connect the auxiliary installation device of the generator outlet circuit breaker to the platform where the new GCB is to be installed; S2.

2. Hoist the new GCB onto the guide rail of the auxiliary installation device of the generator output circuit breaker, and make the guide rail and the travel direction of the new GCB to be installed in a straight line; S2.

3. A traction chain hoist shall be installed in the direction of travel of the new GCB and a brake chain hoist shall be installed in the rear direction of travel; S2.

4. Use the traction hand chain hoist and the brake hand chain hoist to slowly move the new GCB to the installation position to complete the installation.

2. The method for using the auxiliary installation device for generator output circuit breaker according to claim 1, characterized in that: The platform frame comprises four longitudinal beams (5) and eight transverse beams (7), wherein two longitudinal beams (5) are parallel to each other and constitute two long sides of the lower end face of the platform frame, and the four transverse beams (7) are vertically connected to the two longitudinal beams (5), and the spacing between any two transverse beams (7) is the same; the upper end face and the lower end face of the platform frame have the same structure and are fixedly connected by a plurality of support beams (3).

3. The method for using the auxiliary installation device for generator output circuit breaker according to claim 2, characterized in that: The platform frame comprises 12 support beams (3), and the support beams (3) are located at both ends and the center of the cross beam (7).

4. The method for using the auxiliary installation device for generator output circuit breaker according to claim 1, characterized in that: The platform frame also includes a plurality of diagonal bracing beams (6) for supporting and fixing the platform frame.

5. A method for using a generator output circuit breaker auxiliary installation device according to any one of claims 1 to 4, characterized in that: The platform frame is made of No. 16 I-beam, the steel material is Q235, and any connection is fixed by welding. The weld height of the connection is the minimum thickness of the steel plate at the welding point.

6. The method for using the auxiliary installation device for generator output circuit breaker according to claim 1, characterized in that: The ground bull guide rail (2) is formed by spot welding on a steel plate (4) along the longitudinal direction using No. 4 angle steel; the ground bull guide rail (2) has a width of not less than 320 mm and a length of 4200 mm.

7. The method for using the auxiliary installation device for generator output circuit breaker according to claim 1, characterized in that: A hand chain hoist fixing point (1) is provided at a transverse end surface of one side of the steel plate (4); the thickness of the steel plate (4) is 10 mm.

8. The method for using the auxiliary installation device for generator output circuit breaker according to claim 1, characterized in that: The specific steps of removing the old GCB using the generator outlet circuit breaker auxiliary installation device include: S1.

1. Connect the auxiliary installation device of the generator outlet circuit breaker to the platform where the old GCB to be removed is located; Connect the auxiliary installation device of the generator outlet circuit breaker to the steel platform where the old GCB is located, and adjust the height of the sleepers under the auxiliary installation device of the generator outlet circuit breaker to make the auxiliary installation device of the generator outlet circuit breaker and the steel platform where the old GCB to be removed is located at the same level; S1.

2. Replace the old GCB to be removed onto the ground bull, and adjust the ground bull's travel direction to align with the guide rail in the auxiliary installation device of the generator output circuit breaker; Use a hydraulic jack to lift up the old GCB to be removed, and set a ground bull underneath. Adjust the direction of the ground bull so that the direction of the ground bull is in the same straight line with the guide rail in the auxiliary installation device of the generator output circuit breaker, and mark the travel track; S1.

3. A traction hand chain hoist is installed in the direction of travel of the old GCB to be dismantled, and a brake hand chain hoist is installed behind the direction of travel of the old GCB; A 2t traction chain hoist is set in the travel direction of the old GCB, wherein the traction chain hoist is fixed to the chain hoist fixing point of the auxiliary installation device of the generator outlet circuit breaker, and the traction chain hoist is connected to the old GCB through a sling; A 2t brake chain hoist is set in the opposite direction of the old GCB's travel, wherein the brake chain hoist is fixed on the load-bearing member of the steel platform where the old GCB is located, and the brake chain hoist is connected to the old GCB through a sling; S1.

4. Use the traction hand chain hoist and the brake hand chain hoist to slowly move the old GCB to the platform of the auxiliary installation device of the generator output circuit breaker to complete the removal; Pull the traction chain hoist in front of the old GCB to be removed, and at the same time, slowly release the brake chain hoist to make the old GCB to be removed move slowly. During the movement of the old GCB, monitor whether the moving track of the ground bull is consistent with the marked track. If there is a deviation, make adjustments in time; When the old GCB is completely moved to the auxiliary installation device of the generator output circuit breaker, the old GCB is lifted to the transport vehicle using the conventional crane above the island plant to complete the dismantling work.

9. The method for using the auxiliary installation device for generator output circuit breaker according to claim 1, characterized in that: The specific steps of installing a new GCB using the generator output circuit breaker auxiliary installation device are as follows: S2.

1. Connect the auxiliary installation device of the generator outlet circuit breaker to the platform where the new GCB is to be installed; Connect the auxiliary installation device of the generator outlet circuit breaker to the steel platform where the new GCB to be installed is located, and adjust the height of the sleepers under the auxiliary installation device of the generator outlet circuit breaker to make the auxiliary installation device of the generator outlet circuit breaker and the steel platform where the old GCB to be removed is located at the same level. If this work has been completed during removal, this step can be omitted; S2.

2. Place the new GCB on the guide rail of the auxiliary installation device of the generator output circuit breaker, and make the guide rail and the travel direction of the GCB to be installed in a straight line; Align the guide rail in the auxiliary installation device of the generator outlet circuit breaker with the position where the new GCB is to be installed, and set the ground bull on the guide rail of the auxiliary installation device of the generator outlet circuit breaker; Use the crane above the conventional island plant to lift the new GCB to the ground bull on the guide rail, where the ground bull is located directly below the circuit breaker legs; S2.

3. A traction hand chain hoist is installed in the direction of travel of the new GCB, and a brake hand chain hoist is installed at the rear of the travel; A 2t traction chain hoist is set in the direction of travel of the new GCB, wherein the traction chain hoist is fixed on the load-bearing member of the steel platform where the GCB is located, and the traction chain hoist is connected to the new GCB through a sling; A 2t brake chain hoist is installed in the opposite direction of the new GCB, wherein the brake chain hoist is fixed to the chain hoist fixing point of the auxiliary installation device of the generator output circuit breaker, and the brake chain hoist is connected to the new GCB through a sling; S2.

4. Use the traction hand chain hoist and the brake hand chain hoist to slowly move the new GCB to the installation position to complete the installation; Pull the traction chain hoist in front of the new GCB, and at the same time, slowly release the brake chain hoist to make the new GCB move slowly. During the movement of the new GCB, monitor whether the moving track of the ground bull is consistent with the marked track. If there is a deviation, make adjustments in time; When the new GCB is transported to the installation location, it is lifted using a jack or by hanging four hand hoists on the steel beam above the new GCB. When it is lifted to a certain height, new legs are added to the new GCB and the level is adjusted to complete the installation of the new GCB.

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