Cabin dry-type transformer

Abstract

The embodiment of the utility model discloses a cabin dry-type transformer which comprises a coil, an iron core and a fixing mechanism, a plurality of coil positioning and supporting mechanisms are arranged between the coil and the iron core, the coil positioning and supporting mechanisms are fixed on the periphery of the iron core through the fixing mechanism, and each coil positioning and supporting mechanism is composed of a silica gel pad and a supporting plate bonded on the silica gel pad. During operation, the coil can always keep a concentric circle state with the diameter of the iron core; under long-time vibration, the coil positioning and supporting mechanism cannot fall off, meanwhile, damping and force unloading can be achieved, and the coil is protected against damage in the assembling process.

Description

Technical Field

[0001] The utility model relates to the field of electrical technology, in particular to a dry-type transformer for a nacelle. Background Art

[0002] The dry-type transformer for a nacelle is placed on the top of a wind turbine and is vibrated during operation. Therefore, it is necessary to prevent the low-voltage coil from shifting and always keep it in a concentric circle state with the core diameter.

[0003] The existing conventional solution is to knock in a spacer plate between the low-voltage coil and the core of the dry-type transformer, but there are the following disadvantages:

[0004] 1) It is not easy to knock at the copper bar of the low-voltage coil, which is easy to damage the coil and cannot reduce vibration and unload force;

[0005] 2) The knocked-in spacer plate may fall off under long-term vibration;

[0006] 3) The distance between the low-voltage coil and the core of each product is different, and each product needs to be purchased separately, resulting in a long procurement cycle. Summary of the Utility Model

[0007] The technical problem to be solved by the embodiments of the utility model is to provide a dry-type transformer for a nacelle to achieve vibration reduction and force unloading, and at the same time keep the coil in a concentric circle state with the core diameter all the time.

[0008] To solve the above technical problem, the embodiments of the utility model propose a dry-type transformer for a nacelle, which includes a coil and a core, and further includes a fixing mechanism. A plurality of coil positioning and supporting mechanisms are arranged between the coil and the core. The fixing mechanism fixes the coil positioning and supporting mechanisms on the outer periphery of the core. The coil positioning and supporting mechanism is composed of a silica gel pad and a spacer plate bonded to the silica gel pad.

[0009] Further, a plurality of convex balls protrude from the back surface of the silica gel pad.

[0010] Further, the silica gel pad is provided with an assembly hole, and the back surface of the spacer plate correspondingly protrudes with an assembly post embedded in the assembly hole.

[0011] Further, a fixing position is recessed on the front surface of the spacer plate.

[0012] Further, the fixing mechanism is a tie strap.

[0013] Further, both the upper and lower sides of the front surface of the spacer plate are inclined surfaces inclined obliquely inward.

[0014] The beneficial effect of the utility model is that during operation, the coil can always keep a concentric circle state with the core diameter; under long-term vibration, the coil positioning and supporting mechanism will not fall off, and at the same time, vibration reduction and force unloading can be achieved to protect the coil from damage during assembly. Description of the Drawings

[0015] Figure 1 is a three - dimensional structure diagram of the dry - type transformer in the engine room of an embodiment of the present utility model.

[0016] Figure 2 is an internal structure diagram of the dry - type transformer in the engine room of an embodiment of the present utility model.

[0017] Figure 3 is a three - dimensional structure diagram of the coil positioning and supporting mechanism of an embodiment of the present utility model at one angle.

[0018] Figure 4 is a three - dimensional structure diagram of the coil positioning and supporting mechanism of an embodiment of the present utility model at another angle.

[0019] Figure 5 is a three - dimensional structure diagram of the silica gel pad of an embodiment of the present utility model.

[0020] Figure 6 is a three - dimensional structure diagram of the support plate of an embodiment of the present utility model.

[0021] Description of the Reference Numerals in the Drawings

[0022] Coil 10, iron core 20, fixing mechanism 30, coil positioning and supporting mechanism 40, silica gel pad 41, support plate 42, fixing position 43, convex ball 44, assembly hole 45, assembly post 46, inclined plane 47. Detailed Embodiment

[0023] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0024] In the embodiments of the present utility model, if there are directional indications (such as up, down, left, right, front, back...), they are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, in the present utility model, the descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0026] Please refer to Figures 1 to 6 , the dry - type transformer in the engine room of the embodiment of the present utility model includes a coil, an iron core, and a fixing mechanism.

[0027] There are several coil positioning and supporting mechanisms provided between the coil and the iron core. The fixing mechanism fixes the coil positioning and supporting mechanism on the outer periphery of the iron core. The coil positioning and supporting mechanism is composed of a silica gel pad and a support plate adhered to the silica gel pad. The support plate faces the coil side, and the silica gel pad faces the iron core side. A fixing position is concavely provided on the front surface of the support plate. The fixing mechanism is a cable tie. The cable tie is tied at the fixing position of the support plate to bind the coil positioning and supporting mechanism to the iron core. When assembling the coil, there is no need to knock, which protects the coil and avoids scratching the coil, resulting in subsequent operation discharge; and it will not fall off even under long-term vibration. The silica gel pad plays a role in shock absorption and force relief.

[0028] As an implementation manner, several convex balls are convexly provided on the back surface of the silica gel pad. The convex balls are anti-slip, increasing the friction force and further enhancing the firmness of the coil positioning and supporting mechanism.

[0029] As an implementation manner, an assembly hole is provided on the silica gel pad, and an assembly post corresponding to and embedded in the assembly hole is convexly provided on the back surface of the support plate. The nesting of the assembly hole and the assembly post improves the bonding strength between the silica gel pad and the support plate.

[0030] As an implementation manner, both the upper and lower sides of the front surface of the support plate are inclined surfaces that are obliquely inward (i.e., obliquely toward the back surface), which can make the coil installation smoother. Before installing the coil, use a binding band to bind the coil positioning and supporting mechanism to the iron core, and then sleeve the coil.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalent scope.

Claims

1. A dry-type transformer for a nacelle, comprising a coil and an iron core, characterized in that: It also includes a fixing mechanism, and a plurality of coil positioning and supporting mechanisms are arranged between the coil and the iron core. The fixing mechanism fixes the coil positioning and supporting mechanism on the outer periphery of the iron core. The coil positioning and supporting mechanism consists of a silicone pad and a support plate bonded to the silicone pad.

2. The nacelle dry-type transformer according to claim 1, characterized in that: A plurality of convex balls are convexly arranged on the back of the silicone pad.

3. The nacelle dry-type transformer according to claim 1, characterized in that: The silicone pad is provided with an assembly hole, and the back of the support plate is correspondingly provided with an assembly column embedded in the assembly hole.

4. The nacelle dry-type transformer according to claim 1, characterized in that: A fixing position is concavely provided on the front side of the support plate.

5. The nacelle dry-type transformer according to claim 4, characterized in that: The fixing mechanism is a cable tie.

6. The nacelle dry-type transformer according to claim 1, characterized in that: Both upper and lower sides of the front side of the support plate are inclined surfaces slanting inwards.

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