High-strength composite insulation paper

Abstract

The utility model relates to the technical field of insulation paper, in particular to high-strength composite insulation paper, which comprises composite paper used for providing an insulation interlayer for a resistance wire; the first wire fixing groove is formed in the composite paper; the second wire fixing groove is formed in the composite paper, and the composite paper comprises a base paper layer; the first inner insulating layer is arranged on the base paper layer; the second inner insulating layer is arranged on the base paper layer; the first outer insulating layer is arranged on the first inner insulating layer. Through the assembly composed of the composite paper, the first wire fixing groove and the second wire fixing groove, a set of high-strength composite insulation paper is provided for resistor winding of electric appliances such as a transformer, mutual interference of currents can be avoided, normal work of the resistor is ensured, and safe and stable operation of a circuit is protected; the first wire fixing groove and the second wire fixing groove can respectively provide wire grooves for the wound resistance wire, so that the resistance wire can be stably wound based on the first wire fixing groove and the second wire fixing groove, and the use stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of insulating paper, in particular to a high-strength composite insulating paper. Background Art

[0002] At present, most of the insulating papers used in the market are DM and DMD. DM insulating paper refers to two types of composite insulating paper with a relatively simple structure, which is usually used for the insulation of electrical equipment. DMD insulating paper refers to a three-layer composite insulating paper, where "D" stands for polyester non-woven fabric and "M" stands for polyester film. This type of insulating paper is made of polyester film coated with adhesive and bonded with polyester fiber non-woven fabric (non-woven fabric) on both sides. It is suitable for slot insulation, inter-turn and inter-layer insulation, liner insulation core and transformer insulation of small and medium-sized motors.

[0003] The existing double-layer or triple-layer DM and DMD insulating papers have low composite strength. When used with resistor wires for winding, they lack a limiting wire groove structure for the resistor wires, so they are easy to slip during winding. Moreover, when used with resistor wires for high-temperature treatment, after high-temperature treatment, the melting and covering range of the resistor wires is small, which is not conducive to the solidification of the resistors. Therefore, a high-strength composite insulating paper is proposed to provide a set of high-strength composite insulating papers for resistor winding of electrical appliances such as transformers, which can avoid mutual interference of currents, ensure the normal operation of resistors, and protect the safe and stable operation of circuits. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a high-strength composite insulating paper to provide a set of high-strength composite insulating paper for winding resistors of electrical appliances such as transformers, which can avoid mutual interference of currents, ensure the normal operation of resistors, and protect the safe and stable operation of circuits.

[0005] The technical solution adopted by the utility model to solve the technical problem is a high-strength composite insulating paper, comprising:

[0006] Composite paper, used to provide an insulating barrier for resistance wire;

[0007] A first wire fixing groove is arranged on the composite paper;

[0008] The second wire fixing groove is arranged on the composite paper.

[0009] By adopting the above technical scheme, through the components consisting of composite paper, the first wire fixing groove and the second wire fixing groove, a set of high-strength composite insulating paper is provided for the winding of resistors of electrical appliances such as transformers, which can avoid mutual interference of currents, ensure the normal operation of resistors, and protect the safe and stable operation of circuits. The first wire fixing groove and the second wire fixing groove can respectively provide grooves for the wound resistance wire, so that the resistance wire can be stably wound based on the first wire fixing groove and the second wire fixing groove, and the slippage displacement of the resistance wire can be reduced.

[0010] Specifically, the composite paper comprises:

[0011] Base paper layer;

[0012] A first inner insulating layer is disposed on the base paper layer;

[0013] A second inner insulating layer is disposed on the base paper layer;

[0014] A first outer insulating layer, disposed on the first inner insulating layer;

[0015] The second outer insulating layer is disposed on the second inner insulating layer.

[0016] By adopting the above technical solution, the first outer insulating layer and the second outer insulating layer are used as the first insulating layer of the outer layer, and the first inner insulating layer and the second inner insulating layer are used as the second conductive insulating layer of the inner layer, so as to improve the insulation effect of the overall insulating paper, and in combination with the base paper layer, the overall insulating paper has a higher use strength.

[0017] Specifically, at least one group of the first wire fixing grooves are provided and are equidistantly arranged along the outer surface of the first outer insulating layer, and at least one group of the second wire fixing grooves are provided and are equidistantly arranged along the outer surface of the second outer insulating layer.

[0018] Specifically, the base paper layer is made of hemp fiber material.

[0019] By adopting the above technical solution, the base paper layer made of hemp fiber material has good use strength and good fiber pores on the surface, which can help the high-temperature adhesion connection of the first inner insulating layer and the second inner insulating layer.

[0020] Specifically, the first inner insulating layer and the second inner insulating layer are made of polyurethane material.

[0021] By adopting the above technical solution, the first inner insulating layer and the second inner insulating layer made of polyurethane material have good high temperature resistance effect.

[0022] Specifically, the first outer insulating layer and the second outer insulating layer are made of polyester material.

[0023] By adopting the above technical solution, the melting points of the first outer insulating layer and the second outer insulating layer made of polyester material are lower than those of the first inner insulating layer and the second inner insulating layer made of polyurethane material. Therefore, when the wound resistance coil enters the oven for high-temperature treatment, the first outer insulating layer and the second outer insulating layer with a low melting point and a large contact area with the resistance wire will be easily melted, and a large area of ​​adhesion and coating with the resistance wire will be achieved, thereby further improving its use strength and integrity.

[0024] The beneficial effects of the utility model are as follows: through the assembly consisting of the composite paper, the first wire fixing groove and the second wire fixing groove, a set of high-strength composite insulating paper is provided for the winding of the resistor of electrical appliances such as transformers, which can avoid mutual interference of currents, ensure the normal operation of the resistor, and protect the safe and stable operation of the circuit; the first wire fixing groove and the second wire fixing groove can respectively provide wire grooves for the wound resistor wire, so that the resistor wire can be stably wound based on the first wire fixing groove and the second wire fixing groove, which can reduce the slippage displacement of the resistor wire; the first outer insulating layer and the second outer insulating layer made of polyester material have lower melting points than the first inner insulating layer made of polyurethane material The first outer insulating layer and the second inner insulating layer are provided, so that when the wound resistance coil enters the oven for high-temperature treatment, the first outer insulating layer and the second outer insulating layer with low melting point and large contact surface with the resistance wire will be easily melted, and a large area of ​​adhesion and coating with the resistance wire will be achieved, so that its use strength and integrity are further improved, and the problems of low composite strength of existing double-layer or triple-layer DM and DMD insulation paper, lack of limiting wire groove structure for the resistance wire when winding with the resistance wire, easy slipping during winding, and small melting and coating range of the resistance wire after high-temperature treatment when cooperating with the resistance wire, which is not conducive to the solidification of the resistance are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is an overall schematic diagram of the utility model;

[0027] Figure 2 It is a partial schematic diagram of the utility model;

[0028] Figure 3 For the utility model Figure 2 Enlarged schematic diagram at point A in the middle.

[0029] In the figure: 1, composite paper; 101, base paper layer; 102, first inner insulating layer; 103, second inner insulating layer; 104, first outer insulating layer; 105, second outer insulating layer; 2, first wire fixing groove; 3, second wire fixing groove. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] In order to improve the stability of use, such as Figure 1-3 As shown, the high-strength composite insulating paper described in the utility model comprises:

[0032] Composite paper 1, used to provide an insulating layer for the resistance wire;

[0033] A first wire fixing groove 2 is provided on the composite paper 1;

[0034] The second wire fixing groove 3 is disposed on the composite paper 1 .

[0035] When in use, a set of high-strength composite insulating paper is provided by winding the resistor of electrical appliances such as transformers through the composite paper 1, the first wire fixing trough 2 and the second wire fixing trough 3, which can avoid mutual interference of currents, ensure the normal operation of the resistors, and protect the safe and stable operation of the circuit.

[0036] In order to improve the insulation effect, for example, Figure 2 , 3 As shown, the utility model also includes that the composite paper 1 includes:

[0037] Base paper layer 101;

[0038] A first inner insulating layer 102 is disposed on the base paper layer 101;

[0039] A second inner insulating layer 103 is disposed on the base paper layer 101;

[0040] A first outer insulating layer 104 is disposed on the first inner insulating layer 102;

[0041] The second outer insulating layer 105 is disposed on the second inner insulating layer 103 .

[0042] When in use, the first outer insulating layer 104 and the second outer insulating layer 105 serve as the outer layer structure of the insulating paper, and the first inner insulating layer 102 and the second inner insulating layer 103 serve as the inner layer insulating structure of the insulating paper, which improves the overall insulating effect and the use strength.

[0043] In order to improve the packaging, for example, Figure 2 , 3 As shown, the utility model also includes that at least one group of first wire fixing grooves 2 are arranged at equal distances along the outer surface of the first outer insulating layer 104, and at least one group of second wire fixing grooves 3 are arranged at equal distances along the outer surface of the second outer insulating layer 105.

[0044] When in use, the first wire fixing groove 2 and the second wire fixing groove 3 can help the resistor wire to embed into the surface of the paper on the side close to the insulating paper when winding, so as to improve the fixing effect of the insulating paper on the resistor wire, and when the wound resistor enters the oven for high-temperature treatment, the first outer insulating layer 104 and the second outer insulating layer 105 with a low melting point will melt, so as to better melt and cover the resistor wire embedded in the first wire fixing groove 2 and the second wire fixing groove 3, so that the overall connection effect of the resistor is better.

[0045] For example, Figure 3 As shown, the utility model also includes that the base paper layer 101 is made of hemp fiber material.

[0046] The first inner insulating layer 102 and the second inner insulating layer 103 are made of polyurethane material.

[0047] The first outer insulating layer 104 and the second outer insulating layer 105 are made of polyester material.

[0048] When the utility model is in use, the composite paper 1 is wound on the coil, and then the resistance wire is wound based on the fixed wire groove. After winding one layer, the composite paper 1 is wound again, and so on, until the insulating composite paper 1 and the resistor are wound to the required number of layers and contact each other, and then the resistors to be connected are welded, and then the wound resistors are pushed into the oven for high-temperature treatment, and the first outer insulating layer 104 and the second outer insulating layer 105 with low melting points will melt, so as to better melt and cover the resistance wire embedded in the first fixed wire groove 2 and the second fixed wire groove 3, so that the overall connection effect of the resistor is better.

[0049] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-strength composite insulating paper, characterized in that: include: Composite paper (1) for providing an insulating barrier for the resistance wire; A first wire fixing groove (2) is arranged on the composite paper (1); The second wire fixing groove (3) is arranged on the composite paper (1).

2. The high-strength composite insulating paper according to claim 1, characterized in that: The composite paper (1) comprises: A base paper layer (101); A first inner insulating layer (102) is disposed on the base paper layer (101); A second inner insulating layer (103) is disposed on the base paper layer (101); A first outer insulating layer (104) is disposed on the first inner insulating layer (102); The second outer insulating layer (105) is disposed on the second inner insulating layer (103).

3. The high-strength composite insulating paper according to claim 2, characterized in that: At least one group of the first wire fixing grooves (2) are provided and are arranged at equal distances along the outer surface of the first outer insulating layer (104); and at least one group of the second wire fixing grooves (3) are provided and are arranged at equal distances along the outer surface of the second outer insulating layer (105).

4. The high-strength composite insulating paper according to claim 3, characterized in that: The base paper layer (101) is made of hemp fiber material.

5. The high-strength composite insulating paper according to claim 4, characterized in that: The first inner insulating layer (102) and the second inner insulating layer (103) are made of polyurethane material.

6. The high-strength composite insulating paper according to claim 5, characterized in that: The first outer insulating layer (104) and the second outer insulating layer (105) are made of polyester material.

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