Rebounding force testing device for transformer insulating part

Abstract

The utility model relates to a rebounding force testing device for a transformer insulator, which belongs to the technical field of monitoring equipment and comprises a first fixing plate and a second fixing plate which are sequentially arranged from top to bottom, and a supporting rod is arranged between the first fixing plate and the second fixing plate. A top pressing piece, a pressure sensor and a transformer coil are sequentially arranged between the first fixing plate and the second fixing plate from top to bottom. The top pressing piece is installed on the bottom face of the first fixing plate. The pressure sensor is located between the top pressing piece and the transformer coil, and can test the rebound force of the insulating piece; the top pressing piece is located at the top, and adjustment of the pressure is facilitated; the transformer coil is placed on the second fixing plate, so that the to-be-tested transformer coil can be placed and replaced in time, and the operation and use convenience is improved on the premise that the test is completed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to monitoring equipment technical field, concretely is a kind of transformer insulation piece rebound force testing device. BACKGROUND

[0002] The transformer coil is the core component in the transformer, mainly used for generating magnetic field and transmitting electric energy from one circuit to another. The transformer coil is usually composed of a circuit of wires wound on a core. These wires can be round copper wires, flat copper wires or other conductive materials, depending on the capacity and voltage level of the transformer. The wires of the coil are usually wrapped with insulating material to ensure electrical safety and prevent short circuits. The main function of the transformer coil is to realize the transmission of electric energy and the transformation of voltage through the principle of electromagnetic induction. When alternating current passes through the primary coil, an alternating magnetic field is generated around the core. This magnetic field induces the secondary coil, thereby generating an induced electromotive force in the secondary coil. By adjusting the turns ratio of the primary coil and the secondary coil, the voltage can be raised or lowered. The transformer coil is one of the indispensable components in the transformer, and its performance and quality have important influence on the overall performance and service life of the transformer.

[0003] The transformer coil, as an elastic component, is mainly composed of copper wires and insulation made of 100% pure paper pulp. The rebound force and energy storage of the coil during winding are mainly completed by the insulation. The rebound force of the insulation provides data support for the coil press fitting and short circuit design, and is the object that must be studied when designing the transformer. There is a lack of a testing device for insulation of different thickness under different pressure in the prior art. UTILITY MODEL CONTENT

[0004] To solve the problem that different thickness insulation cannot be directly tested under different pressure, the utility model provides a transformer insulation piece rebound force testing device, which can adjust the pressure size in time and replace insulation of different thickness specifications.

[0005] The utility model is realized by the following technical solutions:

[0006] A transformer insulation piece rebound force testing device, comprising a fixed plate one and a fixed plate two arranged in sequence from top to bottom, a support rod is arranged between the fixed plate one and the fixed plate two, a top pressure piece, a pressure sensor and a transformer coil are arranged in sequence from top to bottom between the fixed plate one and the fixed plate two; the top pressure piece is installed on the bottom surface of the fixed plate one.

[0007] The pressure sensor is between the top pressing piece and the transformer coil, can realize the test to the rebound force size of the insulating piece, the top pressing piece is at the top, helps to realize the adjustment to the pressure size, the transformer coil prevents at the fixed plate two, helps to place and replace the transformer coil in time, under the premise of completing the test, improves the convenient use of operation.

[0008] The further improvement of the utility model still has, fixed plate three is arranged between the top pressing piece and the pressure sensor, and the fixed plate three is slidably sleeved on the supporting rod.

[0009] The further improvement of the utility model still has, fixed plate four is arranged between the pressure sensor and the transformer coil, and the fixed plate four is slidably sleeved on the supporting rod.

[0010] The further improvement of the utility model still has, and the display terminal is connected with the pressure sensor through the wire.

[0011] The further improvement of the utility model still has, the supporting rod is a threaded rod, the lower end of the supporting rod is threadedly connected on the fixed plate two, and the upper end of the supporting rod penetrates the fixed plate one.

[0012] The further improvement of the utility model still has, the fixed plate three and the fixed plate four are sleeved with heat shrink tubes along the sliding track of the threaded rod.

[0013] The further improvement of the utility model still has, the top pressing piece is a hydraulic oil cylinder.

[0014] From the above technical scheme, the utility model has the beneficial effects that the pressure sensor is between the top pressing piece and the transformer coil, can realize the test to the rebound force size of the insulating piece, the top pressing piece is at the top, helps to realize the adjustment to the pressure size, the transformer coil prevents at the fixed plate two, helps to place and replace the transformer coil in time, under the premise of completing the test, improves the convenient use of operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to make the technical scheme of the utility model more clear, the following will briefly introduce the drawings needed to be used in the description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0016] Figure 1 It is the structural diagram of the embodiment of the utility model.

[0017] In the drawings: 1, fixed plate one;2, fixed plate two;3, fixed plate three;4, fixed plate four;5, support rod;6, top pressure piece;7, pressure sensor;8, transformer coil;9, heat shrink tube. Specific implementation

[0018] In order to make the purpose, features, advantages of the utility model more obvious and easy to understand, the following will combine the drawings in the specific embodiment, and the technical scheme in the utility model is clearly and completely described, obviously, the following described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the patent, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the patent protection.

[0019] As shown in the accompanying Figure 1 A transformer insulation piece rebound force testing device, including fixed plate one 1 and fixed plate two 2 arranged in sequence from top to bottom, support rod 5 is arranged between fixed plate one 1 and fixed plate two 2, the support rod 5 is threaded rod, the lower end of support rod 5 is threadedly connected on fixed plate two 2;The upper end of support rod 5 penetrates fixed plate one 1, and the upper and lower sides of fixed plate one 1 are threadedly connected with support rod 5 by nut to fix the position of fixed plate one 1. It is helpful to improve the assembly convenience degree between fixed plate one 1, support rod 5 and fixed plate two 2.

[0020] The fixed plate one 1 and the fixed plate two 2 are provided with top pressure piece 6, fixed plate three 3, pressure sensor 7, fixed plate four 4 and transformer coil 8 arranged in sequence from top to bottom;Fixed plate three 3 and fixed plate four 4 are slidingly arranged on support rod 5. The heat shrink tube 9 is sleeved on the track of the threaded rod sliding of fixed plate three 3 and fixed plate four 4. The thread on support rod 5 is wrapped by heat shrink tube 9, which can reduce the friction force during the up and down sliding of fixed plate three 3 and fixed plate four 4 along support rod 5.

[0021] The top pressure piece 6 is installed on the bottom surface of fixed plate one 1;The top pressure piece 6 is hydraulic oil cylinder.

[0022] The pressure sensor 7 is connected to the display terminal by wire. The data in the testing process can be recorded through the display terminal.

[0023] The working principle of the device is as follows: the hydraulic cylinder is used to apply pressure to the insulation part, the pressure sensor 7 is used to output the pre-tightening force, and the data is transmitted to the display terminal.When the pre-tightening force reaches a certain value, the hydraulic cylinder pressure can be released to obtain the rebound force of the insulation part, and the rebound force is also transmitted to the background through the pressure sensor 7.

[0024] 1. The size of the pre-tightening force can be artificially changed by using the hydraulic cylinder; 2. The online monitoring of the force can be realized through the pressure sensor 7; 3. The rebound force of the insulation part with different thicknesses can be measured. The device actually considers the actual situation of the transformer coil 8 insulation part, and can effectively simulate the rebound force of the insulation part with different thicknesses.

[0025] The utility model discloses a kind of transformer insulation part rebound force testing devices, pressure sensor is between top pressure piece and transformer coil, the rebound force of the insulation part can be tested;Top pressure piece is at top, it is helpful to realize the adjustment of pressure size;Transformer coil prevents in fixed plate two, it is helpful to place and replace operation in time to the transformer coil to be measured, under the premise of completing test, the convenient of operation and use is improved.

[0026] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments.

[0027] In the specification, the terms "upper", "lower", "outer side" and "inner side" are used to distinguish the relative position, and do not have to be qualitative. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0028] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transformer insulation component rebound force testing device, comprising a first fixing plate (1) and a second fixing plate (2) arranged sequentially from top to bottom, wherein a support rod (5) is provided between the first fixing plate (1) and the second fixing plate (2), characterized in that, Between the first fixed plate (1) and the second fixed plate (2), a top pressure component (6), a pressure sensor (7) and a transformer coil (8) are arranged sequentially from top to bottom; the top pressure component (6) is installed on the bottom surface of the first fixed plate (1).

2. The transformer insulation component rebound force testing device according to claim 1, characterized in that, A fixing plate 3 (3) is provided between the top pressure member (6) and the pressure sensor (7), and the fixing plate 3 (3) is slidably sleeved on the support rod (5).

3. The transformer insulation component rebound force testing device according to claim 2, characterized in that, A fixing plate 4 (4) is provided between the pressure sensor (7) and the transformer coil (8), and the fixing plate 4 (4) is slidably sleeved on the support rod (5).

4. The transformer insulation component rebound force testing device according to claim 1, characterized in that, It also includes a display terminal connected to the pressure sensor (7) via a wire.

5. A transformer insulation component rebound force testing device according to any one of claims 1 to 4, characterized in that, The support rod (5) is a threaded rod, and the lower end of the support rod (5) is threadedly connected to the second fixing plate (2); the upper end of the support rod (5) passes through the first fixing plate (1), and the upper and lower sides of the first fixing plate (1) are threadedly connected to the support rod (5) by nuts to fix the position of the first fixing plate (1).

6. The transformer insulation component rebound force testing device according to claim 3, characterized in that, The three fixing plates (3) and four fixing plates (4) are fitted with heat shrink tubing (9) along the sliding trajectory of the threaded rod.

7. The transformer insulation rebound force testing device according to claim 1, characterized in that, The top pressure component (6) is a hydraulic cylinder.

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