Special replacement tool for main transmission IGCT (integrated gate commutated thyristor)

Abstract

The utility model discloses a special replacement tool for a main transmission integrated gate commutated thyristor (IGCT), which belongs to the technical field of disassembly tools and comprises a sleeve with the size not smaller than 1m. A clamping head is fixed at the lower end of the sleeve; a clamping groove matched with the IGCT in appearance and size is formed in the lower surface of the clamping head; a magnet is arranged on the clamping head; a transverse through hole in which a handle is inserted is formed in the side wall of the upper end of the sleeve; the central axis of the transverse through hole is perpendicular to the sleeve, and a groove for containing the magnet is formed in the upper surface of the clamping head. According to the utility model, the main transmission IGCT can be quickly and safely replaced, so that the time for detaching the IGCT module is greatly shortened, the detaching convenience is improved, the complexity of detaching by using a multi-connecting-rod tool in the past is changed, and the condition that a screw falls off after detaching is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of disassembly tools, and in particular relates to a special replacement tool for a main drive IGCT. Background Art

[0002] As we all know, the IGCT module in ABB's main drive ACS6000 is an important large power module inside it. According to statistics, the finishing shear, F1-F7 main drive all use IGCT modules, 18 sets of IGCT in each drive cabinet, 72 sets of IGCT for the entire finishing rolling, plus 12 sets of IGCT used by the rough rolling flat roll, the entire rolling line has 84 sets, a huge number. With the gradual increase in service life, the frequency of damage and replacement times become more frequent, but due to the limited space in the main drive cabinet and the compact layout, and the huge size of the IGCT module, the whole is fixed in the frequency conversion cabinet with screws, and the overall disassembly is difficult to operate, and the disassembly time of each set is about 1 hour. The four fixing screws inside it have a disassembly distance of more than 1 meter and need to be disassembled with an extension rod. It is difficult to operate when using existing tools for replacement. Due to the position of the screws, the fixing screws often fall off in the main transmission cabinet. The frequency converter cabinet is a high-voltage cabinet and no debris is allowed inside. It will cause electrical failures in the cabinet. Therefore, the fallen screws must be removed before the equipment can be reinstalled, which prolongs the replacement time.

[0003] How to quickly and safely replace the main drive IGCT has become a problem that must be solved at this stage, and more convenient and practical replacement tools determine the duration and safety of the replacement process. Summary of the invention

[0004] In view of the problems existing in the prior art, the utility model provides a special replacement tool for a main drive IGCT, which can realize rapid and safe replacement of the main drive IGCT.

[0005] The technical solution adopted by the utility model is:

[0006] A special replacement tool for a main transmission IGCT comprises a sleeve with a size of not less than 1m; a chuck is fixed at the lower end of the sleeve; a slot matching the shape and size of the IGCT is provided on the lower surface of the chuck; a magnet is arranged on the chuck; a transverse through hole for inserting a handle is provided on the upper end side wall of the sleeve; and the central axis of the transverse through hole is perpendicular to the sleeve.

[0007] In a feasible technical solution, in order to realize quick installation and replacement of the magnet, a groove for accommodating the magnet is opened on the upper surface of the clamping head.

[0008] In a feasible technical solution, in order to reduce weight, the sleeve is a hollow cylindrical structure.

[0009] In a feasible technical solution, in order to achieve the tightness of the connection, the lower end of the sleeve and the clamp are welded to each other.

[0010] In this embodiment, the slot is a regular hexagonal structure. The length of the sleeve is 1.2 m.

[0011] Compared with the prior art, the advantages and positive effects of this application are:

[0012] By adopting the above technical solution, the utility model can realize fast and safe replacement of the main drive IGCT, that is, it greatly shortens the time of disassembling the IGCT module, improves the convenience of disassembly, changes the cumbersome disassembly with multi-link tools in the past, and avoids the situation that the screws fall off after disassembly. During use, just find the position of the fixing screws, insert them accurately, and turn the sleeve. The same is true when installing. When using the original multi-link tool for disassembly, it takes at least 60 minutes to disassemble each group of IGCT. If the screws fall into the transmission cabinet, the time will be even longer. Now it only takes 20 minutes, and the time used is only 1 / 3 of the original time, which greatly reduces the time of disassembling the IGCT. And this is only one time. There are 72 groups of IGCT in the transmission cabinet in the finishing area, plus the rough rolling flat roller, which makes the module not only large in number, but also difficult to disassemble and assemble. Now using the sleeve to deal with this problem will greatly shorten the time to deal with the fault, save a lot of manpower, and reduce the time for fault handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural diagram of a preferred embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the lower end surface of the chuck in the preferred embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of the upper end surface of the clamping head of the preferred embodiment of the utility model.

[0017] Wherein: 1. sleeve; 1-1. transverse through hole; 2. clamping head; 2-1. clamping slot; 2-2. magnet. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0019] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0020] See also Figures 1 to 3 A special replacement tool for a main drive IGCT comprises a sleeve 1 with a size not less than 1m; a chuck 2 is fixed at the lower end of the sleeve; a slot 2-1 matching the shape and size of the IGCT is provided on the lower surface of the chuck 2; a magnet 2-2 is arranged on the chuck; a transverse through hole 1-1 for inserting a handle is provided on the upper side wall of the sleeve; the central axis of the transverse through hole is perpendicular to the sleeve.

[0021] On the basis of the above preferred embodiment, in order to realize quick installation and replacement of the magnet, a groove for accommodating the magnet is opened on the upper surface of the clamping head.

[0022] On the basis of the above preferred embodiment, in order to reduce weight, the sleeve may be a hollow cylindrical structure.

[0023] On the basis of the above preferred embodiment, in order to achieve the tightness of the connection, the lower end of the sleeve and the clamp are welded to each other.

[0024] Based on the above preferred embodiment, the slot may be a regular hexagonal structure. The length of the sleeve is 1.2 m.

[0025] The chuck is a cylindrical structure, and the axial length of the chuck is 50 mm.

[0026] The side length of the card slot is 8 mm.

[0027] The groove is a circular groove, and the diameter of the groove is 30 mm.

[0028] Through observation and practice of multiple replacements on site, the utility model found that there are two main reasons affecting the replacement speed at this stage: one is the inapplicability of replacement tools, and the other is the time spent searching in the cabinet after the screws fall off. Therefore, how to meet the requirements of fast disassembly while solving the problem of screw falling off is the main direction of this transformation.

[0029] According to the actual operation on site, the tool of the above structure was designed. The main direction is to deepen the depth of the sleeve and add a magnet inside to ensure that the screw does not fall off.

[0030] Through observation of the tools currently used and multiple practices with the modified sleeve, it can be concluded that, first of all, the optimal length of the sleeve's connecting rod is 1.2 meters, which is convenient for inserting into the inverter cabinet and leaves enough margin for easy disassembly; secondly, the head of the sleeve is designed with a clamp, which is the core part of the entire modified tool. First, the outer part of the clamp is shaped as a circle to avoid possible damage to the inside of the inverter in case of accidental collision, and the lower surface is designed to be a regular hexagon, which is exactly the size of the screw on the internal IGCT, so that it can achieve the purpose of driving the screw to rotate. A 2-cm-high round hole is left on the other side for placing a small magnet to prevent the screw from falling off. The overall head length is 10 cm.

[0031] At the end of the magnet, a 1.2-meter-long connecting sleeve rod is welded for insertion and replacement.

[0032] Finally, a transverse through hole 1-1 is opened at the tail of the sleeve, and another identical transverse through hole 1-1 is opened at the opposite surface of the tail, so that during the installation or disassembly process, a plug-in handle (such as an iron rod) can be inserted, making it more convenient and quick to rotate and better to remove the screws, thus greatly shortening the entire disassembly time.

[0033] After practice, in this embodiment, the length of the entire sleeve is set to 1.2m; the head of the sleeve is designed with a clamp head, which is a cylindrical shape with a diameter of 40mm, which is convenient for entering the protective cover. The lower surface of the clamp head is a hexagonal clamping groove with a side length of 8mm, which is convenient for clamping the outer side of the screw to drive it to rotate. The wall thickness between the outer wall of the clamp head and the inner hexagonal shape is 10mm, and the axial length of the entire clamp head is 50mm. This length is to better clamp the head position of the fixing bolt. After the screw is removed, a placement space is reserved. The rear length of the sleeve is 20mm, and the internal diameter of the sleeve is 30mm. A magnet is placed in the groove position on the upper surface of the clamp head. After the magnet is placed, a 1.2-meter-long connecting sleeve tube is welded.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A special replacement tool for main drive IGCT, characterized in that: The invention comprises a sleeve (1) having a size of not less than 1 m; a clamping head (2) is fixed at the lower end of the sleeve (1); a clamping groove (2-1) matching the shape and size of an IGCT is provided on the lower surface of the clamping head (2); a magnet (2-2) is arranged on the clamping head (2); a transverse through hole (1-1) for inserting a handle is provided on the upper side wall of the sleeve (1); and the central axis of the transverse through hole (1-1) is perpendicular to the sleeve (1).

2. The special replacement tool for the main drive IGCT according to claim 1, characterized in that: A groove for accommodating a magnet (2-2) is provided on the upper surface of the clamping head (2).

3. The special replacement tool for the main drive IGCT according to claim 1, characterized in that: The sleeve (1) is a hollow cylindrical structure.

4. The special replacement tool for the main drive IGCT according to claim 1, characterized in that: The lower end of the sleeve (1) and the clamp (2) are welded to each other.

5. The special replacement tool for the main drive IGCT according to claim 1, characterized in that: The card slot (2-1) is a regular hexagonal structure.

6. The special replacement tool for the main drive IGCT according to claim 1, characterized in that: The length of the sleeve (1) is 1.2 m.

7. The special replacement tool for the main drive IGCT according to claim 1, characterized in that: The chuck (2) is a cylindrical structure, and the axial length of the chuck (2) is 50 mm.

8. The special replacement tool for the main drive IGCT according to claim 5, characterized in that: The side length of the card slot (2-1) is 8 mm.

9. The special replacement tool for the main drive IGCT according to claim 2, characterized in that: The groove is a circular groove, and the diameter of the groove is 30 mm.

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