Engine outlet enclosed busbar CT replacement tool

Abstract

The utility model relates to the technical field of large-scale engine outlet equipment maintenance, in particular to an engine outlet enclosed busbar CT replacement tool which comprises an enclosed busbar shell, a conductor is arranged in the enclosed busbar shell, a CT is arranged on the left portion of the outer surface of the conductor, a CT installation screw is arranged on the lower portion of the outer surface of the CT, a tool body is installed below the CT, and the CT installation screw is installed on the tool body. A generator side supporting seat and a support are fixedly installed on the lower portion of the left end of the tool body, the generator side supporting seat is fixedly installed on the outer surface of the support, the support is fixedly connected with the lower end of the tool body, and leveling supporting feet are fixedly installed at the lower end of the support. According to the CT replacement tool for the closed bus at the outlet of the engine, by using the tool, the CT replacement difficulty of the closed bus at the outlet of the engine is greatly reduced, the problem of disassembly and assembly of the CT in a narrow machine pit space is solved, and the safety of personnel and equipment in the CT disassembly and assembly process is met to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance of large engine export equipment, in particular to a CT replacement tool for the enclosed busbar at the engine outlet. Background Technique

[0002] CTs (current transformers) are installed inside the enclosed busbar at the engine outlet. The generator is arranged inside the pit wall, and the pit wall is made of reinforced concrete. Generally, there are load-bearing corbels set by the civil engineering specialty at the upper part of the pit wall, protruding towards the stator base. The generator outgoing line adopts an enclosed busbar, which is a circular conductor with a metal enclosed shell. Its structure is that there is a conductor in the middle and a metal shell outside, and a ring-shaped CT is arranged between the conductor and the metal shell.

[0003] The CT at the engine outlet is heavy, generally 300 kg - 500 kg; at the same time, the outer dimension can reach 1.6 m. In the narrow pit, large hoisting or installation equipment cannot be used. At present, the installation is carried out by manpower and equipment such as chain hoists. Through the outer shell maintenance opening, the CT is pushed from the generator terminal to the inside. After reaching the specified position, the CT is fixed by using the reserved circumferential bolt holes. The disassembly is also carried out by the above method.

[0004] When disassembling and installing the CT at the engine outlet by the above method, there is no way to effectively apply a large mechanical force during the moving process in the construction process. The space at the construction site is narrow, and the personnel cannot move freely. Simply dragging and carrying by manpower will consume a lot of manpower and time, resulting in low work efficiency, large workload and long time-consuming for replacing the CT, and low work efficiency. At the same time, there are relatively large potential safety hazards. Therefore, we introduce a new CT replacement tool for the enclosed busbar at the engine outlet. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a CT replacement tool for the enclosed busbar at the engine outlet, which can effectively solve the problems in the background technique.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A CT replacement tool for the enclosed busbar at the engine outlet includes an enclosed busbar shell. A conductor is arranged inside the enclosed busbar shell. A CT is arranged on the left part of the outer surface of the conductor. CT installation screws are arranged on the lower part of the outer surface of the CT. A tooling main body is installed below the CT. A generator-side support seat and a bracket are fixedly installed on the lower part of the left end of the tooling main body. The generator-side support seat is fixedly installed on the outer surface of the bracket. The bracket is fixedly connected to the lower end of the tooling main body. A leveling support foot is fixedly installed at the lower end of the bracket.

[0008] Preferably, the tooling main body includes a tooling base. A bearing seat is movably connected to the right part of the upper end of the tooling base. Clamping jaws are installed at the front and rear parts of the left end of the bearing seat. A screw drive is arranged at the left end of the tooling base. A screw is arranged inside the screw drive. A drive mounting seat is fixedly installed in the middle of the left end of the tooling base. Three ball tracks are installed in the inner wall of the tooling base by grooving.

[0009] Preferably, the cross-section of the tooling base is an arc-shaped structure. The bearing seat is fixedly connected to the CT through CT mounting screws. The bearing seat is movably connected to the three ball tracks through rolling grooves opened below.

[0010] By adopting the above technical solutions: One end of the tooling base can extend into the gap between the closed busbar housing and the CT. The radius of the lower side of the tooling base is close to the inner diameter of the busbar housing and is designed according to negative tolerance; it can also be a structure with a rotating shaft for fine adjustment to meet the usage requirements of different pipe diameters. The tooling base is made of 6061-T4 aluminum alloy, and the wall thickness of the extending end is 15 mm; the exposed part is located in the machine pit wall outside the closed busbar housing and is integrated with bracket installation jacks and screw drive installation threaded holes.

[0011] Preferably, the screw drive is fixedly installed at the upper end of the drive mounting seat. The left part of the lower end of the tooling base is fixedly connected to the bracket.

[0012] By adopting the above technical solutions: The screw drive is installed at the end of the tooling base through the bracket; one end of the screw is connected to the bearing seat, and the linear movement of the bearing seat along the tooling main body is realized by the rotation of the screw.

[0013] Preferably, the bearing seat is movably connected to the screw through a movable sleeve.

[0014] Preferably, the clamping jaw includes a jaw body. An axial tension screw is arranged at the left end of the jaw body. Clamping jaw locking screws and radial adjustment screws are arranged at the connection end of the jaw body and the bearing seat.

[0015] Preferably, the jaw body is fixedly installed at the left end of the bearing seat through the axial tension screw. The clamping jaw locking screw is located above the radial adjustment screw.

[0016] By adopting the above technical solutions: Fixing is carried out through the clamping jaws and the vertical edge in front of the bearing seat to ensure that the CT will not be damaged during the disassembly and assembly process; using the screw for pushing and pulling to avoid potential safety hazards in manual operation.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. By using the structure of a ball track, with a tooling base at the lower part and a bearing base at the upper part, the bearing base can move linearly on the tooling base through the ball track; the CT is placed on the bearing base and fixed by a clamping jaw and the vertical edge in front of the bearing base to ensure that the CT will not be damaged during the disassembly and assembly process; a lead screw is used for pushing and pulling to avoid potential safety hazards in manual operation.

[0019] 2. The tooling is fixed by using a vertical bracket and a generator-side fixing seat, which maximally ensures the stability of the tooling during operation; by using the tooling, the difficulty of replacing the CT of the engine outlet enclosed busbar is greatly reduced, the disassembly and assembly problems of the CT in a narrow machine pit space are solved, and the safety of personnel and equipment during the disassembly and assembly process of the CT is maximally satisfied. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a CT replacement tooling for an engine outlet enclosed busbar of the present utility model;

[0021] Figure 2 It is a schematic diagram of CT installation of a CT replacement tooling for an engine outlet enclosed busbar of the present utility model;

[0022] Figure 3 It is a schematic diagram of CT pushing of a CT replacement tooling for an engine outlet enclosed busbar of the present utility model;

[0023] Figure 4 It is a schematic diagram of the CT clamping jaw of a CT replacement tooling for an engine outlet enclosed busbar of the present utility model.

[0024] In the figure: 1, enclosed busbar housing; 2, conductor; 3, CT; 4, CT installation screw; 5, tooling main body; 6, generator-side support seat; 7, bracket; 8, leveling support foot; 51, tooling base; 52, bearing base; 53, clamping jaw; 54, lead screw drive; 55, lead screw; 56, drive installation seat; 57, ball track; 531, jaw main body; 532, axial tension screw; 533, jaw locking screw; 534, radial adjustment screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0029] A replacement tool for the CT of the closed busbar at the engine outlet includes a busbar enclosure 1. Inside the busbar enclosure 1, there is a conductor 2. On the left part of the outer surface of the conductor 2, there is a CT 3. Below the outer surface of the CT 3, there are CT installation screws 4. Below the CT 3, there is a tooling main body 5. At the lower part of the left end of the tooling main body 5, there are fixedly installed a generator-side support seat 6 and a bracket 7. The generator-side support seat 6 is fixedly installed on the outer surface of the bracket 7. The bracket 7 is fixedly connected to the lower end of the tooling main body 5. At the lower end of the bracket 7, there is fixedly installed a leveling support foot 8.

[0030] In this embodiment, the tooling main body 5 includes a tooling seat 51. At the right part of the upper end of the tooling seat 51, there is a movable connection with a bearing seat 52. At the front part and the rear part of the left end of the bearing seat 52, there are installed clamping claws 53. At the left end of the tooling seat 51, there is a screw drive 54. Inside the screw drive 54, there is a screw 55. In the middle part of the left end of the tooling seat 51, there is fixedly installed a drive mounting seat 56. Inside the inner wall of the tooling seat 51, there are three ball tracks 57 installed by grooving. The cross-section of the tooling seat 51 is an arc-shaped structure. The bearing seat 52 is fixedly connected to the CT 3 through the CT installation screw 4. The bearing seat 52 is movably connected to the three ball tracks 57 through the rolling grooves opened below. The screw drive 54 is fixedly installed on the upper end of the drive mounting seat 56. The lower left part of the tooling seat 51 is fixedly connected to the bracket 7. The bearing seat 52 is movably connected to the screw 55 through a movable sleeve.

[0031] Through the above solution: By using the tooling main body 5, the difficulty of replacing the CT3 of the closed busbar at the engine outlet is greatly reduced, the disassembly and assembly problems of the CT3 in the narrow machine pit space are solved, and the safety of personnel and equipment during the disassembly and assembly of the CT3 is satisfied to the greatest extent.

[0032] In this embodiment, the clamping jaw 53 includes a jaw main body 531. An axial tension screw 532 is arranged at the left end of the jaw main body 531. A jaw locking screw 533 and a radial adjustment screw 534 are arranged at the connection end of the jaw main body 531 and the bearing seat 52. The jaw main body 531 is fixedly installed at the left end of the bearing seat 52 through the axial tension screw 532, and the jaw locking screw 533 is located above the radial adjustment screw 534.

[0033] Through the above solution: By fixing with the clamping jaw 53 and the vertical edge in front of the bearing seat 52, it is ensured that the CT3 will not be damaged during the disassembly and assembly process; the lead screw 55 is used for pushing and pulling to avoid the potential safety hazards existing in manual operation.

[0034] It should be noted that the present utility model is a replacement tool for the CT of the engine outlet enclosed busbar. During use, the cross-section of the tooling seat 51 is an arc-shaped structure. One end of the tooling seat 51 can extend into the gap between the enclosed busbar housing 1 and the CT 3. The radius of the lower side of the tooling seat 51 is close to the inner diameter of the enclosed busbar housing 1 and is designed according to a negative tolerance; it can also be a rotating shaft fine-tuning structure to meet the usage requirements of different pipe diameters. The tooling seat 51 is made of 6061-T4 aluminum alloy, and the wall thickness of the extending end is 15 mm; the exposed part is located on the pit wall outside the enclosed busbar housing 1 and is integrated with a mounting jack for the support 7 and a mounting threaded hole for the screw drive 54; three ball tracks 57 are installed in a groove on the tooling seat 51, and the balls are installed in the cage to ensure smooth rotation and prevent the balls from getting disordered when carrying heavy objects. The maximum thickness of the extending end of the clamping claw 53 is 30 mm, the depth of the hook part is 20 mm, and the radial thickness is 10 mm (10 mm is sufficient to extend into the gap between the CT 3s); the tensioning set screw can make the end of the clamping claw 53 tightly fit against the inner surface of the CT 3, and the adjusting set screw is used to adjust the gap between the clamping claw 53 and the installation plane of the tooling main body 5. The locking bolt is tightened to make the tooling main body 5 tightly clamp the CT 3. The disassembly and assembly can be specifically completed in the following steps: First step, install the tooling main body 5 and extend the extending end into the gap between the enclosed busbar housing 1 and the CT 3; Second step, the two columns on the upper side of the support 7 extend into the reserved holes at the lower part of the main body, and the four leveling feet 8 at the bottom are adjusted to make the extending end and the suspended end of the tooling main body 5 horizontal; Third step, install the generator side support seat 6, and the generator side support seat 6 is designed according to the fasteners available at the generator stator support; ensure that the tooling seat 51 does not shift during operation; Fourth step, install the support seat; Fifth step, place the CT 3 at the corresponding position of the bearing seat 52 through a hoisting device; Sixth step, install the clamping claw 53, and fix the CT 3 to the bearing seat 52 through the CT installation screw 4; Seventh step, install the screw mechanism, the screw drive 54 is installed on the tooling seat 51 through screws, and one end of the screw 55 is fixed to the corresponding installation position of the bearing seat 52; Eighth step, the hoisting device leaves the site, the screw drive 54 is started, and through the rotation of the screw 55, the bearing seat 52 is pushed into the installation position of the CT 3 in the enclosed busbar; Ninth step, use the CT axial tensioning screw 532 to install the CT 3 on the enclosed busbar; Tenth step, remove the clamping claw 53; remove the bearing seat 52; remove other components of the tooling. For the entire replacement tool for the CT of the engine outlet enclosed busbar, through the use of the tooling, the difficulty of replacing the CT 3 of the engine outlet enclosed busbar is greatly reduced, the disassembly and assembly problems of the CT 3 in the narrow pit space are solved, and the safety of personnel and equipment during the disassembly and assembly of the CT 3 is satisfied to the greatest extent.

[0035] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A replacement tool for the CT of the enclosed busbar at the engine outlet, including an enclosed busbar housing (1), characterized in that: Inside the enclosure housing (1), a conductor (2) is provided. On the left part of the outer surface of the conductor (2), a CT (3) is provided. Below the outer surface of the CT (3), a CT mounting screw (4) is provided. Below the CT (3), a tooling body (5) is installed. At the lower part of the left end of the tooling body (5), a generator-side support seat (6) and a bracket (7) are fixedly installed. The generator-side support seat (6) is fixedly installed on the outer surface of the bracket (7). The bracket (7) is fixedly connected to the lower end of the tooling body (5). At the lower end of the bracket (7), a leveling support foot (8) is fixedly installed. The tooling body (5) includes a tooling seat (51). At the upper right part of the tooling seat (51), a carrier seat (52) is movably connected. At the front and rear parts of the left end of the carrier seat (52), clamping claws (53) are installed. At the left end of the tooling seat (51), a screw drive (54) is provided. Inside the screw drive (54), a screw rod (55) is provided. At the middle part of the left end of the tooling seat (51), a drive mounting seat (56) is fixedly installed. Inside the inner wall of the tooling seat (51), three ball tracks (57) are installed by grooving.

2. The CT replacement tooling for the engine outlet enclosed busbar according to claim 1, wherein: The cross-section of the tooling seat (51) is an arc-shaped structure. The carrier seat (52) is fixedly connected to the CT (3) through the CT mounting screw (4). The carrier seat (52) is movably connected to the three ball tracks (57) through the rolling grooves opened below.

3. A CT replacement tooling for the engine outlet enclosed busbar according to claim 1, characterized in that: The screw drive (54) is fixedly installed on the upper end of the drive mounting seat (56). The lower left part of the tooling seat (51) is fixedly connected to the bracket (7).

4. A CT replacement tooling for the closed busbar at the engine outlet according to claim 1, characterized in that: The carrier seat (52) is movably connected to the screw rod (55) through a movable sleeve.

5. The CT replacement tooling for the closed busbar at the engine outlet according to claim 1, wherein: The clamping claw (53) includes a claw body (531). At the left end of the claw body (531), an axial tension screw (532) is provided. At the connection end of the claw body (531) and the carrier seat (52), a claw locking screw (533) and a radial adjustment screw (534) are provided.

6. The CT replacement tooling for the engine outlet enclosed busbar according to claim 5, characterized in that: The claw body (531) is fixedly installed at the left end of the carrier seat (52) through the axial tension screw (532). The claw locking screw (533) is located above the radial adjustment screw (534).

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