Insulation cushion block for high-capacity dry-type transformer

Abstract

The utility model relates to the technical field of transformers, in particular to an insulating cushion block for a high-capacity dry-type transformer, which comprises a bottom plate, a height adjusting mechanism is arranged at the top end of the bottom plate, and a cushion block mechanism is arranged at the top end of the height adjusting mechanism. The insulating cushion block has the beneficial effects that the height of the insulating cushion block can be flexibly adjusted, so that the insulating cushion block can adapt to the mounting position, and a large-capacity dry-type transformer can be flexibly underlaid in an insulating manner; the supporting plate and the substrate layer are arranged at the bottom end of the insulation protection mechanism, and the wear-resistant layer is arranged at the top end of the insulation protection mechanism, so that good wear-resistant protection can be provided for the contact surface of the insulation cushion block, good supporting and reinforcing are achieved, and stable use of the whole insulation cushion block is kept.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to insulating pads for large-capacity dry-type transformers. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, the secondary coil, and the iron core. Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization. According to its application, it can be divided into power transformers and special transformers.

[0003] Dry-type transformers are widely used in hospitals, high-rise buildings, airports, docks, CNC machinery equipment, and other places with fire prevention and environmental protection requirements.

[0004] The insulating pads of dry-type transformers serve to support, position, pre-tighten, and fix the coils. Sometimes they also serve to position the insulating cylinders between high and low voltage sections, ensuring the overall mechanical strength of the transformer, preventing coil displacement, and especially ensuring electrical insulation requirements and resistance to short-circuit current and electrodynamic forces.

[0005] For example, the prior art Chinese patent publication number "CN215451104U" provides an insulating pad for an ultra-large capacity dry-type transformer, including an upper pad for pressing, a lower pad for pressing / supporting the coil, and a silicone rubber block sandwiched in between for insulation. The surface of the lower pad for pressing / supporting the coil has at least one heat dissipation groove with open ends, and the surface of the lower pad for pressing / supporting the coil also has arc-shaped partition grooves with open ends corresponding to the number of tubular partitions.

[0006] This device allows airflow in the heat dissipation channel of the coil to pass through the heat dissipation groove of the insulating pad to form a heat dissipation path, thereby improving the local heat dissipation capacity of the transformer, avoiding local overheating of the transformer, and improving the reliability of the transformer.

[0007] Existing insulating blocks for large-capacity dry-type transformers have relatively fixed dimensions. During installation and use, the dimensions cannot be adjusted to adapt to different usage conditions, making it inconvenient to flexibly provide insulation for large-capacity dry-type transformers. In addition, the structure of the insulating blocks is relatively simple, and the surface is easily worn or even deformed by pressure, affecting the normal use of the insulating blocks. Utility Model Content

[0008] The purpose of this invention is to address the shortcomings of existing insulating pads, which have relatively fixed dimensions and cannot be adjusted to adapt to different usage situations during installation and use, making it inconvenient to flexibly provide insulating pads for large-capacity dry-type transformers. Therefore, this invention proposes an insulating pad for large-capacity dry-type transformers.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] The design includes an insulating pad for a large-capacity dry-type transformer, comprising a base plate, a height adjustment mechanism at the top of the base plate, and a pad mechanism at the top of the height adjustment mechanism. The height adjustment mechanism includes a support cylinder and an adjusting cylinder. The surface of the support cylinder has an adjustment groove, and the adjusting cylinder slides into the interior of the support cylinder. A fastening rod is fixed to the outer bottom end of the adjusting cylinder, and the fastening rod slides through the adjustment groove. A fastening nut is connected to the outer end of the fastening rod. A limit nut is connected to the surface of the adjusting cylinder at the top of the support cylinder. The pad mechanism includes a support plate and an insulation protection mechanism. The support plate is fixed to the top of the adjusting cylinder, and the insulation protection mechanism is located at the top of the support plate.

[0011] Furthermore, the insulation protection mechanism includes a base layer, a first insulation layer, a fireproof layer, a second insulation layer, and a wear-resistant layer. The base layer is bonded to the top of the support plate. The base layer, the first insulation layer, the fireproof layer, the second insulation layer, and the wear-resistant layer are bonded together sequentially from bottom to top. A heat-conducting pipe runs through its surface. The bottom end of the heat-conducting pipe is connected to the top end of the adjusting cylinder. A limit strip is bonded to the top end of the wear-resistant layer.

[0012] Furthermore, a positioning hole is provided at the bottom end of the base plate, a soft pad is bonded to the bottom end of the base plate, and a positioning post is fixed to the top of the soft pad, with the positioning post inserted into the positioning hole.

[0013] Furthermore, both the support cylinder and the adjusting cylinder are cylindrical structures and are vertically arranged. The adjusting grooves are evenly distributed on the surface of the support cylinder and can be used for ventilation and heat dissipation of the insulating pad.

[0014] Furthermore, the fastening rod is a threaded rod structure and is horizontally arranged. It is fastened and connected to the support cylinder by the fastening nut. The limiting nut is threadedly connected to the external thread on the outer surface of the adjusting cylinder for adjusting the height of the pad block mechanism.

[0015] Furthermore, the support plate has a rectangular plate structure and is made of insulating plastic plate. The base layer is made of PE board material, and the first insulating layer is made of electrically insulating paperboard.

[0016] Furthermore, the fireproof layer is made of polyurethane material, the second insulating layer is made of insulating rubber material, the wear-resistant layer is made of silicone material, and the limiting strip is made of epoxy resin material, has a rectangular structure, and is vertically arranged.

[0017] The insulating pad for large-capacity dry-type transformers proposed in this utility model has the following advantages:

[0018] 1. This utility model has a height adjustment mechanism set at the top of the base plate, and the insulation protection mechanism is installed at the top of the adjustment cylinder through the support plate. Therefore, the adjustment cylinder can be moved up and down along the adjustment groove. Then, the limit nut is rotated to support the adjusted pad mechanism, and the fastening nut is rotated to fasten the connection between the adjusted adjustment cylinder and the support cylinder. Therefore, it is convenient to flexibly adjust the height of the insulation pad to adapt to the installation position and to flexibly provide insulation pads for large-capacity dry-type transformers.

[0019] 2. This utility model provides a support plate and a base layer at the bottom of the insulation protection mechanism and a wear-resistant layer at the top of the insulation protection mechanism. Therefore, it can provide good wear-resistant protection for the contact surface of the insulation pad and provide good support and reinforcement, thus maintaining the overall stable use of the insulation pad. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This utility model Figure 1 A schematic diagram of the insulation protection mechanism;

[0022] Figure 3 This utility model Figure 1 A schematic diagram of the support plate and adjusting cylinder;

[0023] Figure 4 This utility model Figure 1 A schematic diagram of the support plate and adjusting cylinder;

[0024] Figure 5 This utility model Figure 1 A schematic diagram of the base plate and support cylinder;

[0025] Figure 6 This utility model Figure 1 A schematic diagram of the cushioned part.

[0026] In the diagram: 1. Base plate; 2. Pad; 3. Support cylinder; 4. Limiting nut; 5. Support plate; 6. Positioning post; 7. Heat-conducting pipe; 8. Limiting strip; 9. Base layer; 10. First insulation layer; 11. Fireproof layer; 12. Second insulation layer; 13. Wear-resistant layer; 14. Adjusting cylinder; 15. Fastening rod; 16. Fastening nut; 17. Adjusting groove; 18. Positioning hole. Detailed Implementation

[0027] 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.

[0028] Example 1

[0029] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The insulating pad for the large-capacity dry-type transformer shown in the figure includes a base plate 1. The top of the base plate 1 is provided with a height adjustment mechanism, and the top of the height adjustment mechanism is provided with a pad mechanism.

[0030] The height adjustment mechanism includes a support cylinder 3 and an adjustment cylinder 14. The surface of the support cylinder 3 has an adjustment groove 17. The adjustment cylinder 14 is slidably inserted into the interior of the support cylinder 3. A fastening rod 15 is fixed to the outer side of the bottom end of the adjustment cylinder 14. The fastening rod 15 slides through the adjustment groove 17. A fastening nut 16 is connected to the outer end of the fastening rod 15. A limit nut 4 is connected to the surface of the adjustment cylinder 14 at the top end of the support cylinder 3.

[0031] The pad block mechanism includes a support plate 5 and an insulation protection mechanism. The support plate 5 is fixed to the top of the adjusting cylinder 14, and the insulation protection mechanism is disposed at the top of the support plate 5.

[0032] A height adjustment mechanism is set at the top of the base plate 1, and the insulation protection mechanism is installed at the top of the adjustment cylinder 14 through the support plate 5. Therefore, the adjustment cylinder 14 can be moved up and down along the adjustment groove 17. Then, the limit nut 4 is rotated to support the adjusted pad mechanism, and the fastening nut 16 is rotated to fasten the adjusted adjustment cylinder 14 and the support cylinder 3. Therefore, it is convenient to flexibly adjust the height of the insulation pad to adapt to the installation position and to flexibly perform insulation padding on large-capacity dry-type transformers.

[0033] The bottom end of the base plate 1 has a positioning hole 18, and a soft pad 2 is bonded to the bottom end of the base plate 1. A positioning post 6 is fixed to the top of the soft pad 2, and the positioning post 6 is inserted into the positioning hole 18.

[0034] Both the support cylinder 3 and the adjusting cylinder 14 are cylindrical structures and are vertically arranged. The adjusting grooves 17 are evenly distributed on the surface of the support cylinder 3 and can be used for ventilation and heat dissipation of the insulating pad.

[0035] The fastening rod 15 is a threaded rod structure and is horizontally arranged. It is fastened and connected to the support cylinder 3 by the fastening nut 16. The limiting nut 4 is threadedly connected to the external thread on the outer surface of the adjusting cylinder 14 for adjusting the height of the pad block mechanism.

[0036] Example 2

[0037] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The insulating pad for the large-capacity dry-type transformer shown in the figure includes a base plate 1. The top of the base plate 1 is provided with a height adjustment mechanism, and the top of the height adjustment mechanism is provided with a pad mechanism.

[0038] The height adjustment mechanism includes a support cylinder 3 and an adjustment cylinder 14. The surface of the support cylinder 3 has an adjustment groove 17. The adjustment cylinder 14 is slidably inserted into the interior of the support cylinder 3. A fastening rod 15 is fixed to the outer side of the bottom end of the adjustment cylinder 14. The fastening rod 15 slides through the adjustment groove 17. A fastening nut 16 is connected to the outer end of the fastening rod 15. A limit nut 4 is connected to the surface of the adjustment cylinder 14 at the top end of the support cylinder 3.

[0039] A height adjustment mechanism is set at the top of the base plate 1, and the insulation protection mechanism is installed at the top of the adjustment cylinder 14 through the support plate 5. Therefore, the adjustment cylinder 14 can be moved up and down along the adjustment groove 17. Then, the limit nut 4 is rotated to support the adjusted pad mechanism, and the fastening nut 16 is rotated to fasten the adjusted adjustment cylinder 14 and the support cylinder 3. Therefore, it is convenient to flexibly adjust the height of the insulation pad to adapt to the installation position and to flexibly perform insulation padding on large-capacity dry-type transformers.

[0040] The pad block mechanism includes a support plate 5 and an insulation protection mechanism. The support plate 5 is fixed to the top of the adjusting cylinder 14, and the insulation protection mechanism is disposed at the top of the support plate 5.

[0041] The insulation protection mechanism includes a base layer 9, a first insulation layer 10, a fireproof layer 11, a second insulation layer 12, and a wear-resistant layer 13. The base layer 9 is bonded to the top of the support plate 5. The base layer 9, the first insulation layer 10, the fireproof layer 11, the second insulation layer 12, and the wear-resistant layer 13 are bonded together sequentially from bottom to top. A heat-conducting pipe 7 penetrates its surface. The bottom end of the heat-conducting pipe 7 is connected to the top end of the adjusting cylinder 14. A limit strip 8 is bonded to the top end of the wear-resistant layer 13.

[0042] The fireproof layer 11 is made of polyurethane material, the second insulation layer 12 is made of insulating rubber material, the wear-resistant layer 13 is made of silicone material, and the limiting strip 8 is made of epoxy resin material, has a rectangular structure, and is vertically arranged.

[0043] The support plate 5 is a rectangular plate structure and is made of insulating plastic plate. The base layer 9 is made of PE board material, and the first insulating layer 10 is made of electrically insulating paperboard.

[0044] The fireproof layer 11 is made of polyurethane material, the second insulation layer 12 is made of insulating rubber material, the wear-resistant layer 13 is made of silicone material, and the limiting strip 8 is made of epoxy resin material, has a rectangular structure, and is vertically arranged.

[0045] Working method: A height adjustment mechanism is set at the top of the base plate 1, and the insulation protection mechanism is installed at the top of the adjustment cylinder 14 through the support plate 5. Therefore, the adjustment cylinder 14 can be moved up and down along the adjustment groove 17. Then, the limit nut 4 is rotated to support the adjusted pad mechanism, and the fastening nut 16 is rotated to fasten the adjusted adjustment cylinder 14 and the support cylinder 3. Therefore, it is convenient to flexibly adjust the height of the insulation pad to adapt to the installation position and to flexibly perform insulation padding on large-capacity dry-type transformers.

[0046] A support plate 5 and a base layer 9 are provided at the bottom of the insulation protection mechanism, and a wear-resistant layer 13 is provided at the top of the insulation protection mechanism. Therefore, it can provide good wear-resistant protection for the contact surface of the insulation pad and provide good support and reinforcement, thus maintaining the overall stable use of the insulation pad.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An insulating pad for a large-capacity dry-type transformer, comprising a base plate (1), characterized in that: The top of the base plate (1) is provided with a height adjustment mechanism, and the top of the height adjustment mechanism is provided with a pad block mechanism; The height adjustment mechanism includes a support cylinder (3) and an adjustment cylinder (14). The surface of the support cylinder (3) has an adjustment groove (17). The adjustment cylinder (14) is slidably inserted into the interior of the support cylinder (3). A fastening rod (15) is fixed to the outer side of the bottom end of the adjustment cylinder (14). The fastening rod (15) slides through the adjustment groove (17). A fastening nut (16) is connected to the outer end of the fastening rod (15). A limit nut (4) is connected to the surface of the adjustment cylinder (14) at the top of the support cylinder (3). The pad block mechanism includes a support plate (5) and an insulation protection mechanism. The support plate (5) is fixed to the top of the adjusting cylinder (14), and the insulation protection mechanism is located at the top of the support plate (5).

2. The insulating pad for a large-capacity dry-type transformer according to claim 1, characterized in that: The insulation protection mechanism includes a base layer (9), a first insulation layer (10), a fireproof layer (11), a second insulation layer (12), and a wear-resistant layer (13). The base layer (9) is bonded to the top of the support plate (5). The base layer (9), the first insulation layer (10), the fireproof layer (11), the second insulation layer (12), and the wear-resistant layer (13) are bonded together from bottom to top. A heat-conducting pipe (7) runs through its surface. The bottom end of the heat-conducting pipe (7) is connected to the top end of the regulating cylinder (14). A limit strip (8) is bonded to the top end of the wear-resistant layer (13).

3. The insulating pad for a large-capacity dry-type transformer according to claim 1, characterized in that: The bottom end of the base plate (1) has a positioning hole (18), and a soft pad (2) is bonded to the bottom end of the base plate (1). A positioning post (6) is fixed to the top of the soft pad (2), and the positioning post (6) is inserted into the interior of the positioning hole (18).

4. The insulating pad for a large-capacity dry-type transformer according to claim 1, characterized in that: Both the support cylinder (3) and the adjustment cylinder (14) are cylindrical structures and are vertically arranged. The adjustment groove (17) is evenly distributed on the surface of the support cylinder (3) and can be used for ventilation and heat dissipation of the insulating pad.

5. The insulating pad for a large-capacity dry-type transformer according to claim 1, characterized in that: The fastening rod (15) is a threaded rod structure and is horizontally set. It is fastened and connected to the support cylinder (3) through the fastening nut (16). The limiting nut (4) is threadedly connected to the external thread on the outer surface of the adjusting cylinder (14) for adjusting the height of the pad block mechanism.

6. The insulating pad for a large-capacity dry-type transformer according to claim 2, characterized in that: The support plate (5) is a rectangular plate structure and is made of insulating plastic plate. The base layer (9) is made of PE board material, and the first insulating layer (10) is made of electrically insulating paperboard.

7. The insulating pad for a large-capacity dry-type transformer according to claim 2, characterized in that: The fireproof layer (11) is made of polyurethane material, the second insulation layer (12) is made of insulating rubber material, the wear-resistant layer (13) is made of silicone material, and the limiting strip (8) is made of epoxy resin material, has a rectangular structure, and is vertically arranged.

Images