A maintenance-free corrosion-resistant iron accessory kit for dry-type transformers

Abstract

The utility model relates to dry -type transformer technical field discloses a kind of maintenance-free corrosion-resistant iron accessory kits for dry-type transformer, solve the problem that existing dry-type transformer iron accessory kits is prone to looseness and corrosion, it includes transformer accessory iron clamp body, transformer accessory iron clamp body is by two bottom feet, two lower clamping plates, two upper clamping plates, several draw plates and several screw nuts, draw plate is welded between lower clamping plate and upper clamping plate and is pasted with the side of transformer iron core, two anti-loosening positioning components are set on screw nut, anti-loosening positioning component is by positioning sleeve and L type positioning arm, the outer surface of bottom foot, lower clamping plate, upper clamping plate, draw plate is all provided with hot-dip galvanizing layer, the outer surface of hot-dip galvanizing layer is provided with epoxy resin spray coating;Through the kit, the anti-loosening effect and corrosion resistance can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of dry-type transformer technology, specifically a maintenance-free corrosion-resistant iron accessory kit for dry-type transformers. Background Technology

[0002] Transformer clamps are a key accessory for dry-type transformers, used to support and fix the transformer core. Transformer clamps need to be connected and fixed with bolts and nuts. However, dry-type transformers often vibrate during use, which can easily cause the bolts and nuts to loosen. This requires regular inspection and maintenance by staff, which is quite troublesome. In addition, although transformer clamp accessories are often made of stainless steel, their corrosion resistance needs to be further improved. Therefore, this application proposes a maintenance-free corrosion-resistant iron accessory kit for dry-type transformers. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a maintenance-free corrosion-resistant iron accessory kit for dry-type transformers, which effectively solves the problem that existing dry-type transformer iron accessory kits are prone to loosening and corrosion.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a maintenance-free corrosion-resistant iron accessory kit for dry-type transformers, comprising a transformer accessory iron clamp body, wherein the transformer accessory iron clamp body is composed of two base feet, two lower clamp plates, two upper clamp plates, several pull plates and several screws and nuts, the two lower clamp plates are installed on the top of the two base feet by screws and nuts, the two lower clamp plates and the two upper clamp plates are all connected to the side of the transformer core by screws and nuts, and the pull plates are welded between the lower clamp plates and the upper clamp plates and fit against the side of the transformer core;

[0005] Two anti-loosening positioning components are fitted on the screw nut. The anti-loosening positioning components consist of a positioning sleeve and an L-shaped positioning arm. The positioning sleeve is fitted on the screw nut. A hexagonal inner groove is opened in the middle of the positioning sleeve. Several positioning grooves are opened on the arc-shaped outer surface of the positioning sleeve. One end of the L-shaped positioning arm is inserted into one of the positioning grooves and welded to the positioning sleeve. The other end of the L-shaped positioning arm is welded to the transformer accessory iron clamp body.

[0006] The outer surfaces of the base, lower clamping plate, upper clamping plate, and pull plate are all provided with a hot-dip galvanized layer, and the outer surface of the hot-dip galvanized layer is provided with an epoxy resin spray coating.

[0007] Preferably, the outer surface of the hot-dip galvanized layer is subjected to acid etching treatment, forming several etching grooves on the outer surface of the hot-dip galvanized layer.

[0008] Preferably, both ends of the top of the upper clamping plate are fixedly provided with lifting lugs, which are welded to the upper clamping plate.

[0009] Preferably, rubber washers are provided at the contact points between the screw nut and the base, lower clamping plate, upper clamping plate, and pull plate.

[0010] Preferably, a rubber pad is provided between the base, the lower clamping plate, the upper clamping plate and the transformer core, and a plurality of rubber pads are provided between the base and the lower clamping plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) In operation, by setting up a transformer accessory iron clamp body consisting of two base feet, two lower clamps, two upper clamps, several pull plates and several screws and nuts, the transformer core can be supported and fixed. By setting up an anti-loosening positioning component consisting of a positioning sleeve and an L-shaped positioning arm, the screws and nuts can be prevented from loosening, thus improving the overall stability of the transformer accessory iron clamp body.

[0013] (2) By setting a hot-dip galvanized layer and an epoxy resin spraying layer, corrosion protection can be achieved for the base, lower clamping plate, upper clamping plate and pull plate, improving the overall corrosion resistance. By setting an etching groove, the epoxy resin spraying layer can be tightly adhered to the outer surface of the hot-dip galvanized layer. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the maintenance-free corrosion-resistant iron accessory kit for dry-type transformers according to this utility model;

[0017] Figure 2 This is a schematic diagram of the lower clamping plate structure of this utility model;

[0018] Figure 3 This is a partial structural diagram of the lower clamping plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the anti-loosening positioning component of this utility model;

[0020] Figure 5 This is a schematic diagram of a partial layer structure of the lower clamping plate of this utility model;

[0021] In the diagram: 1. Transformer accessory clamp body; 2. Base foot; 3. Lower clamp plate; 4. Upper clamp plate; 5. Pull plate; 6. Screw and nut; 7. Transformer core; 8. Anti-loosening positioning component; 9. Positioning sleeve; 10. L-shaped positioning arm; 11. Hexagonal inner groove; 12. Positioning groove; 13. Hot-dip galvanized layer; 14. Epoxy resin spray coating; 15. Etched groove; 16. Lifting lug; 17. Rubber washer; 18. Rubber pad one; 19. Rubber pad two. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Depend on Figures 1 to 5 This invention discloses a maintenance-free, corrosion-resistant iron accessory kit for dry-type transformers, comprising a transformer accessory iron clamp body 1. The transformer accessory iron clamp body 1 consists of two base feet 2, two lower clamping plates 3, two upper clamping plates 4, several pull plates 5, and several screws and nuts 6. The two lower clamping plates 3 are mounted on the tops of the two base feet 2 via screws and nuts 6. Both the two lower clamping plates 3 and the two upper clamping plates 4 are connected to the sides of the transformer core 7 via screws and nuts 6. The pull plates 5 are welded between the lower clamping plates 3 and the upper clamping plates 4. The screw nut 6 is fitted with two anti-loosening positioning components 8 that fit against the side of the transformer core 7. The anti-loosening positioning components 8 consist of a positioning sleeve 9 and an L-shaped positioning arm 10. The positioning sleeve 9 is fitted onto the screw nut 6. A hexagonal inner groove 11 is provided in the middle of the positioning sleeve 9. Several positioning grooves 12 are provided on the arc-shaped outer surface of the positioning sleeve 9. One end of the L-shaped positioning arm 10 is inserted into one of the positioning grooves 12 and welded to the positioning sleeve 9. The other end of the L-shaped positioning arm 10 is welded to the transformer accessory clamp body 1.

[0024] The base 2, lower clamping plate 3, upper clamping plate 4, and pull plate 5 support and fix the transformer core 7. The screw and nut 6 connect and fix the base 2, lower clamping plate 3, and upper clamping plate 4. After assembly, the positioning sleeve 9 is put on the screw and nut 6. The hexagonal inner groove 11 engages with the hexagonal end of one end of the screw and the outer surface of the nut. Then, the positioning groove 12 is selected at a suitable position, and one end of the L-shaped positioning arm 10 is inserted into the positioning groove 12 and welded. Then, the other end of the L-shaped positioning arm 10 is welded to the lower clamping plate 3 and the upper clamping plate 4 to form a limiting function. No maintenance is required later. Welding will not damage the screw and nut 6. In the event of a fault, only the L-shaped positioning arm 10 and the positioning sleeve 9 need to be replaced.

[0025] The outer surfaces of the base 2, lower clamping plate 3, upper clamping plate 4, and pull plate 5 are all provided with a hot-dip galvanized layer 13. The outer surface of the hot-dip galvanized layer 13 is provided with an epoxy resin spray coating 14. The outer surface of the hot-dip galvanized layer 13 is acid-etched, and several etched grooves 15 are formed on the outer surface of the hot-dip galvanized layer 13. The hot-dip galvanized layer 13 and the epoxy resin spray coating 14 can achieve corrosion protection for the base 2, lower clamping plate 3, upper clamping plate 4, and pull plate 5. The etched grooves 15 can improve the adhesion between the epoxy resin spray coating 14 and the hot-dip galvanized layer 13 and prevent peeling.

[0026] Lifting lugs 16 are fixedly installed at both ends of the top of the two upper clamping plates 4. The lifting lugs 16 are welded to the upper clamping plates 4 to enable hoisting. Rubber washers 17 are installed at the contact positions of the screw nut 6 with the base 2, lower clamping plate 3, upper clamping plate 4, and pull plate 5. Rubber pads 18 are installed between the base 2, lower clamping plate 3, upper clamping plate 4 and the transformer core 7. Several rubber pads 29 are installed between the base 2 and the lower clamping plate 3 to provide a buffer at the connection.

[0027] In operation, the transformer accessory clamp body, consisting of two base feet, two lower clamping plates, two upper clamping plates, several pull plates, and several screws and nuts, can support and fix the transformer core. The anti-loosening positioning component, consisting of a positioning sleeve and an L-shaped positioning arm, can prevent the screws and nuts from loosening, thus improving the overall stability of the transformer accessory clamp body. The hot-dip galvanized layer and epoxy resin spray coating can provide corrosion protection for the base feet, lower clamping plates, upper clamping plates, and pull plates, improving the overall corrosion resistance. The etched grooves can ensure that the epoxy resin spray coating adheres tightly to the outer surface of the hot-dip galvanized layer.

Claims

1. A maintenance-free, corrosion-resistant iron accessory kit for dry-type transformers, comprising a transformer accessory iron clip body (1), characterized in that: The transformer accessory clamp body (1) consists of two base feet (2), two lower clamping plates (3), two upper clamping plates (4), several pull plates (5) and several screws and nuts (6). The two lower clamping plates (3) are installed on the top of the two base feet (2) by screws and nuts (6). The two lower clamping plates (3) and the two upper clamping plates (4) are connected to the side of the transformer core (7) by screws and nuts (6). The pull plates (5) are welded between the lower clamping plates (3) and the upper clamping plates (4) and are attached to the side of the transformer core (7). Two anti-loosening positioning components (8) are fitted on the screw nut (6). The anti-loosening positioning component (8) consists of a positioning sleeve (9) and an L-shaped positioning arm (10). The positioning sleeve (9) is fitted on the screw nut (6). A hexagonal inner groove (11) is opened in the middle of the positioning sleeve (9). Several positioning grooves (12) are opened on the arc-shaped outer surface of the positioning sleeve (9). One end of the L-shaped positioning arm (10) is inserted into one of the positioning grooves (12) and welded to the positioning sleeve (9). The other end of the L-shaped positioning arm (10) is welded to the transformer accessory iron clamp body (1). The outer surfaces of the base (2), lower clamping plate (3), upper clamping plate (4), and pull plate (5) are all provided with a hot-dip galvanized layer (13), and the outer surface of the hot-dip galvanized layer (13) is provided with an epoxy resin spray coating (14).

2. The maintenance-free corrosion-resistant iron accessory kit for dry-type transformers according to claim 1, characterized in that: The outer surface of the hot-dip galvanized layer (13) is acid-etched, and several etching grooves (15) are formed on the outer surface of the hot-dip galvanized layer (13).

3. The maintenance-free corrosion-resistant iron accessory kit for dry-type transformers according to claim 1, characterized in that: Both ends of the top of the upper clamping plate (4) are fixedly provided with lifting lugs (16), which are welded to the upper clamping plate (4).

4. A maintenance-free corrosion-resistant iron accessory kit for dry-type transformers according to claim 1, characterized in that: Rubber washers (17) are provided at the contact positions of the screw nut (6) with the base (2), lower clamping plate (3), upper clamping plate (4), and pull plate (5).

5. A maintenance-free corrosion-resistant iron accessory kit for dry-type transformers according to claim 1, characterized in that: Rubber pads (18) are provided between the base (2), lower clamp (3), upper clamp (4) and transformer core (7), and several rubber pads (19) are provided between the base (2) and lower clamp (3).

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