Winding installation structure of dry-type transformer

Abstract

The utility model relates to a winding mounting structure of a dry-type transformer, which is characterized by comprising a coil winding packaged by an insulating layer and a lower clamping component, a plurality of supporting legs integrated with the insulating layer on the coil winding are formed at the bottom of the coil winding, and each supporting leg is pressed on the lower clamping component. According to the utility model, a cushion block does not need to be arranged between the coil winding and the lower clamping assembly, so that the processes of placing and adjusting the cushion block do not exist in the process of assembling the coil winding and the lower clamping assembly together, and the installation of the coil winding is very simple and convenient; therefore, the convenience and the efficiency of assembling the dry-type transformer can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of transformers, in particular to a winding installation structure of a dry-type transformer. Background Art

[0002] like Figure 1 and Figure 2 As shown, in the existing dry-type transformer, in order to separate the coil winding 100 and the lower clamp 200, a plurality of pads 300 are arranged between the coil winding 100 and the lower clamp 200. When assembling the components of the above-mentioned dry-type transformer, each pad is first placed on the lower clamp, and then the coil winding is installed, and the lower end of the coil winding is pressed on each pad. Since each pad is only placed on the lower clamp 200, the lower clamp 200 can only support the pad 300 and cannot limit the movement of the pad 300. The accuracy and stability of placing the pads in this way are very limited, so when installing the coil winding, the coil winding often cannot be accurately combined with the pad, and the pad is easily displaced or falls off due to the contact of the coil winding, which will further cause the coil winding and the pad to be unable to be accurately combined together, so it is necessary to adjust the relative position of each pad and the coil winding later. Since the coil winding is pressed on each pad at this time, and the pads are generally more than four, the adjustment is very inconvenient and cumbersome, which greatly affects the convenience and efficiency of dry-type transformer assembly. Therefore, it is very necessary to redesign the structure of the dry-type transformer. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned problems and shortcomings and to provide a winding installation structure for a dry-type transformer. The winding installation structure does not require a pad between the coil winding and the lower clamp assembly, so that there is no process of placing and adjusting the pad during the process of assembling the coil winding and the lower clamp assembly, thereby making the installation of the coil winding very simple and convenient, and thus greatly improving the convenience and efficiency of the dry-type transformer assembly.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A winding installation structure for a dry-type transformer is characterized in that it includes a coil winding encapsulated by an insulating layer and a lower clamping assembly, wherein the bottom of the coil winding is formed with a plurality of supporting feet integral with the insulating layer thereon, and each supporting foot is pressed on the lower clamping assembly.

[0006] Preferably, a locking screw is passed through the lower clamp assembly, and a threaded end of the locking screw passes through the lower clamp assembly and is screwed onto the supporting foot.

[0007] Preferably, a first shock-absorbing washer is clamped between the supporting foot and the lower clamp assembly, and the first shock-absorbing washer is placed on the locking screw.

[0008] Preferably, a pressing convex portion is provided on the middle portion of the bottom surface of the supporting foot, and the pressing convex portion is tightly pressed on the first shock-absorbing washer.

[0009] Preferably, a steel cylinder is embedded in the supporting foot, and the locking screw is screwed onto the steel cylinder.

[0010] Preferably, the steel cylinder is arranged vertically, a plurality of limiting protrusions are provided on the outer wall of the steel cylinder, the supporting feet are formed on the steel cylinder, and the supporting feet cover the limiting protrusions, and the locking screw is threadedly connected to the inner hole of the steel cylinder.

[0011] Preferably, a second shock-absorbing washer is clamped between the nut end of the locking screw and the lower clamp assembly, and the second shock-absorbing washer is sleeved on the threaded end of the locking screw.

[0012] Preferably, a spring washer is sandwiched between the second shock-absorbing washer and the nut end of the locking screw.

[0013] Preferably, the support foot is a truncated cone-shaped support foot that is larger at the top and smaller at the bottom.

[0014] The beneficial effects of the utility model are as follows: in the winding installation structure, a plurality of support feet are formed at the bottom of the coil winding and are integrated with the insulating layer thereon, and each support foot is pressed on the lower clamp assembly. In this way, the coil winding and the lower clamp assembly can be separated by the support feet, which does not require the installation of a plurality of pads between the coil winding and the lower clamp assembly. In this way, when assembling the coil winding and the lower clamp assembly together, there is no need to place a plurality of pads and adjust the pads, so that the installation of the coil winding is very simple and convenient, and thus the convenience and efficiency of the assembly of the dry-type transformer can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an existing dry-type transformer in the main viewing direction.

[0016] Figure 2 It is a structural schematic diagram of an existing dry-type transformer as viewed from the left.

[0017] Figure 3 It is a structural schematic diagram of the winding installation structure in the main viewing direction of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the winding installation structure in the utility model when viewed from the left.

[0019] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure of part A. DETAILED DESCRIPTION

[0020] like Figure 3 and Figure 4 As shown, the winding installation structure of a dry-type transformer described in the utility model includes a coil winding 1 encapsulated by an insulating layer 11 and a lower clamping assembly 2, wherein the bottom of the coil winding 1 is formed with a plurality of supporting feet 12 which are integral with the insulating layer 11 thereon, and each supporting foot 12 is pressed onto the lower clamping assembly 2.

[0021] In the winding installation structure, a plurality of support legs 12 are formed at the bottom of the coil winding 1 and are integrated with the insulating layer 11 thereon, and each support leg 12 is pressed on the lower clamp assembly 2. In this way, the coil winding 1 and the lower clamp assembly 2 can be separated by the support legs 12, which does not require the installation of a plurality of pads between the coil winding 1 and the lower clamp assembly 2. In this way, there is no need to place a plurality of pads and adjust the pads during the assembly of the coil winding 1 and the lower clamp assembly 2, thereby making the installation of the coil winding 1 very simple and convenient, and thus greatly improving the convenience and efficiency of the assembly of the dry-type transformer.

[0022] like Figures 3 to 5 As shown, a locking screw 3 is inserted into the lower clamp assembly 2, and the threaded end of the locking screw 3 passes through the lower clamp assembly 2 and is screwed onto the support leg 12. The locking of the locking screw 3 can help to stably limit the coil winding 1 on the lower clamp assembly 2, thereby helping to further improve the stability and reliability of the assembly, and further helping to further improve the reliability of the winding installation structure. After the locking screw 3 is set, it is not necessary to set a spacer between the lower clamp assembly 2 and the coil winding 1, which can completely eliminate the process of installing and adjusting the spacer, thereby further improving the convenience and efficiency of dry-type transformer assembly.

[0023] like Figure 4 and Figure 5 As shown, a first shock-absorbing washer 10 is clamped between the support foot 12 and the lower clamp assembly 2, and the first shock-absorbing washer 10 is sleeved on the locking screw 3. The first shock-absorbing washer 10 can reduce vibration and noise, thereby reducing the noise of the dry-type transformer during use, which helps to further improve the applicability of the winding installation structure.

[0024] like Figure 4 and Figure 5 As shown, a pressing convex portion 121 is provided on the middle part of the bottom surface of the support leg 12, and the pressing convex portion 121 is pressed tightly on the first shock-absorbing washer 10. This can help the force of the support leg 12 to act accurately and stably on the first shock-absorbing washer 10, thereby achieving a more stable and reliable shock-absorbing and noise-reducing effect.

[0025] The pressing protrusion 121 is integrally formed with the supporting foot 12, and the diameter of the pressing protrusion 121 is less than or equal to the diameter of the first shock-absorbing washer 10, which not only ensures that the force of the supporting foot 12 acts on the first shock-absorbing washer 10 very accurately; it can also reduce the interference between the supporting foot 12 and the lower clamping assembly 2 when the diameter of the supporting foot 12 is large; and when a screw hole for locking the locking screw 3 is opened on the supporting foot 12, the pressing protrusion 121 can provide an initial opening position for the screw hole, which can help reduce the structural strength of the initial opening position of the screw hole and avoid accidental cracking caused by the opening of the screw hole extending to the supporting foot 12. In this way, on the basis of facilitating the opening of the screw hole, the structural strength of the supporting foot 12 can be avoided from being adversely affected, thereby helping to make the winding installation structure have high structural strength.

[0026] like Figure 5 As shown, a steel cylinder 13 is embedded in the support foot 12, and the locking screw 3 is screwed on the steel cylinder 13. This can enhance the stability and reliability of the locking of the locking screw 3, thereby helping to further improve the reliability of the winding installation structure.

[0027] like Figure 5 As shown, the steel cylinder 13 is arranged vertically, a plurality of limiting convex portions 131 are arranged on the outer wall of the steel cylinder 13, the supporting foot 12 is formed on the steel cylinder 13, and the supporting foot 12 covers each limiting convex portion 131, and the locking screw 3 is screwed on the inner hole of the steel cylinder 13. This can not only enhance the stability and reliability of the assembly of the steel cylinder 13 and the supporting foot 12, but also facilitate the locking screw 3 and the steel cylinder 13 to achieve a very stable and reliable screw connection, thereby further improving the reliability of the winding installation structure.

[0028] like Figure 5 As shown, the lower end of the steel cylinder 13 protrudes from the bottom surface of the supporting foot 12 to form a top pressing protrusion 121. The top pressing protrusion 121 formed in this way has higher structural strength, which helps to improve the stability and reliability of the supporting foot 12, and further helps to further improve the reliability and applicability of the winding installation structure.

[0029] The steel cylinder 13 is a stainless steel cylinder, which can make the steel cylinder 13 have high structural strength and durability, thereby helping to further improve the reliability of the winding installation structure.

[0030] like Figure 4 and Figure 5As shown, a second shock-absorbing washer 20 is sandwiched between the nut end 31 of the locking screw 3 and the lower clamping assembly 2, and the second shock-absorbing washer 20 is sleeved on the threaded end of the locking screw 3. The second shock-absorbing washer 20 can reduce vibration and noise, thereby reducing the noise when the dry-type transformer is used, and further helping to further improve the applicability of the winding installation structure. When the first shock-absorbing washer 10 and the second shock-absorbing washer 20 are provided at the same time, an extremely good shock-absorbing and noise-reducing effect can be achieved.

[0031] The first shock-absorbing washer 10 and the second shock-absorbing washer 20 are both shock-absorbing rubber rings, which not only have a good shock-absorbing effect but also have very strong durability, thereby helping to further improve the reliability and applicability of the installation structure.

[0032] like Figure 4 and Figure 5 As shown, a spring washer 30 is sandwiched between the second shock-absorbing washer 20 and the nut end 31 of the locking screw 3. The provision of the spring washer 30 can enhance the stability and reliability of the locking of the locking screw 3, thereby helping to further improve the reliability and applicability of the winding installation structure.

[0033] like Figures 3 to 5 As shown, the support foot 12 is a truncated cone-shaped support foot that is larger at the top and smaller at the bottom. This not only facilitates molding and processing, but also enables the support foot 12 to have a high structural strength, thereby enabling the support foot 12 to have a very stable and reliable supporting effect.

[0034] like Figures 3 to 5 As shown, each coil winding 1 has four supporting legs 12, and the four supporting legs 12 are distributed in a rectangular shape. The lower clamping assembly 2 includes two lower clamping pieces 21, and the two lower clamping pieces 21 are arranged side by side and parallel to each other. The two front supporting legs 12 are pressed on the front lower clamping piece 21, and the two rear supporting legs 12 are pressed on the rear lower clamping piece 21, which can well meet the needs of actual manufacturing and use.

[0035] like Figure 5 As shown, the first shock absorbing washer 10 is arranged on the top surface of the lower clamp 21, the second shock absorbing washer 20 and the spring washer 30 are stacked in sequence on the bottom surface of the lower clamp 21, the threaded end of the locking screw 3 passes through the spring washer 30, the second shock absorbing washer 20, the lower clamp 21, and the first shock absorbing washer 10 in sequence, and then is screwed to the top pressing convex part 121 and the supporting foot 12, and the nut end 31 of the locking screw 3 is tightly pressed on the spring washer 30. In this way, a very stable and reliable locking effect can be achieved, thereby ensuring the reliability and applicability of the winding installation structure.

[0036] The above embodiments are preferred embodiments of the present utility model. All structures similar to the present utility model and equivalent changes made thereto should fall within the protection scope of the present utility model.

Claims

1. A winding installation structure for a dry-type transformer, characterized in that: It comprises a coil winding (1) encapsulated by an insulating layer (11) and a lower clamping assembly (2), wherein a plurality of supporting feet (12) integrally formed with the insulating layer (11) thereon are formed at the bottom of the coil winding (1), and each supporting foot (12) is pressed onto the lower clamping assembly (2).

2. The winding installation structure of the dry-type transformer according to claim 1, characterized in that: A locking screw (3) is inserted through the lower clamping assembly (2), and a threaded end of the locking screw (3) passes through the lower clamping assembly (2) and is screwed onto the supporting foot (12).

3. The winding installation structure of the dry-type transformer according to claim 2, characterized in that: A first shock-absorbing washer (10) is clamped between the support foot (12) and the lower clamp assembly (2), and the first shock-absorbing washer (10) is sleeved on the locking screw (3).

4. The winding installation structure of the dry-type transformer according to claim 3, characterized in that: A pressing convex portion (121) is provided on the middle portion of the bottom surface of the supporting foot (12), and the pressing convex portion (121) is tightly pressed on the first shock-absorbing washer (10).

5. The winding installation structure of the dry-type transformer according to claim 3, characterized in that: A steel cylinder (13) is embedded in the support foot (12), and the locking screw (3) is screwed onto the steel cylinder (13).

6. The winding installation structure of the dry-type transformer according to claim 5, characterized in that: The steel cylinder (13) is arranged vertically, and a plurality of limiting protrusions (131) are provided on the outer wall of the steel cylinder (13). The support foot (12) is formed on the steel cylinder (13), and the support foot (12) covers each limiting protrusion (131). The locking screw (3) is screwed onto the inner hole of the steel cylinder (13).

7. The winding installation structure of a dry-type transformer according to any one of claims 2 to 6, characterized in that: A second shock-absorbing washer (20) is clamped between the nut end (31) of the locking screw (3) and the lower clamp assembly (2), and the second shock-absorbing washer (20) is sleeved on the threaded end of the locking screw (3).

8. The winding installation structure of the dry-type transformer according to claim 7, characterized in that: A spring washer (30) is sandwiched between the second shock-absorbing washer (20) and the nut end (31) of the locking screw (3).

9. The winding installation structure of the dry-type transformer according to claim 2, characterized in that: The support foot (12) is a truncated cone-shaped support foot that is larger at the top and smaller at the bottom.

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