High-voltage lightning arrester sleeve based on pultrusion winding process
By adopting pultrusion winding process and multi-layer fiber structure in the high-pressure lightning arrester casing, the problems of poor bending performance, low production efficiency and high cost in the prior art are solved, and higher strength and production efficiency are achieved, and lowered strength and production efficiency are achieved. Resin cost and waste.
Patent Information
- Application Number
- CN202420930818.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing high-pressure lightning arrester sleeves lack axial force in the winding process, resulting in poor bending performance, low production efficiency, high resin viscosity requirements and high cost, and there are problems of cutting and waste of scraps during the production process.
Using a design based on a pultrusion winding process, including an outer liner layer, a first longitudinal fiber layer, a wound fiber layer, a second longitudinal fiber layer and an inner liner layer, the polyester fiber cloth and continuous fiber felt are used to improve corrosion resistance and bending resistance. , and improve overall performance through cross-layer distribution and secondary winding processes, reducing resin viscosity requirements and costs.
It significantly improves the axial bending and annular strength of the high-pressure lightning arrester sleeve, improves production efficiency, reduces costs, avoids waste of bubbles and scraps, and enhances process compatibility performance.
Smart Images
Figure CN222168056U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of electric power engineering, in particular to a high-voltage lightning arrester bushing based on a pultrusion winding process. Background Art
[0002] High-voltage lightning arrester is an important electrical protection device. Its main working principle is to limit overvoltage. It is also called overvoltage protector or overvoltage limiter. This device is usually connected between the high-voltage wire and the ground wire, and sometimes connected next to the electrical winding or between the wires. The lightning arrester uses its good nonlinear VA characteristics. It is mainly used to protect electrical equipment from high transient overvoltage hazards and limit the follow-on time. It can prevent damage to equipment due to lightning overvoltage, thereby protecting the safe operation of electrical equipment and systems.
[0003] In the prior art, since high-voltage electrical components have high requirements for electrical insulation levels, heavy loads, and high temperature loads, the current ply design of high-voltage arrester bushings mostly adopts a multi-layer fiber cloth structure, which is made using a winding process and a high-temperature resistant epoxy resin system.
[0004] During long-term use and observation, it was found that the main problems of the complex high-voltage lightning arrester bushings currently produced by the winding process are: 1. The fiber direction is mainly wound, lacking axial force, resulting in poor bending resistance of the product; 2. The production efficiency of the product is relatively low and the production environment is not friendly; 3. The winding process has extremely high requirements on the viscosity of the resin system. If it is too high, it cannot be penetrated, and the cost of epoxy resin with low viscosity is relatively high; 4. During the winding process, the two ends need to be cut and the outer circle needs to be further processed, which further increases the cost.
[0005] To this end, the utility model provides a high-voltage lightning arrester bushing based on a pultrusion winding process. Utility Model Content
[0006] In order to make up for the deficiencies of the prior art and solve at least one problem raised in the background technology, a high-voltage lightning arrester bushing based on a pultrusion winding process is proposed.
[0007] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes a high-voltage lightning arrester bushing based on a pultrusion winding process, comprising an outer lining layer; a first longitudinal fiber layer is provided at the bottom of the outer lining layer; a winding fiber layer is provided at the bottom of the first longitudinal fiber layer; a second longitudinal fiber layer is provided at the bottom of the winding fiber layer; an inner lining layer is provided at the bottom of the second longitudinal fiber layer; the inner lining layer is mainly composed of polyester fiber cloth and continuous fiber felt, and its function is to increase the corrosion resistance of the bottom and improve the surface smoothness of the bottom. The first longitudinal fiber layer and the second longitudinal fiber layer mainly play the role of process layers, and also greatly increase the longitudinal bending resistance and tensile properties of the produced high-voltage lightning arrester bushing. The outer lining layer is mainly composed of composite insulating cloth, which plays a role in preventing cracking.
[0008] Preferably, the wound fiber layer is formed by two groups of different fibers being wound in opposite directions.
[0009] Preferably, a first fiber cloth is provided between the outer lining layer and the first longitudinal fiber layer; a second fiber cloth is provided between the second longitudinal fiber layer and the inner lining layer; this step can improve the overall performance of the produced high-voltage lightning arrester bushing by providing the first fiber cloth between the outer lining layer and the first longitudinal fiber layer, and providing the second fiber cloth between the second longitudinal fiber layer and the inner lining layer.
[0010] The beneficial effects of the utility model are as follows:
[0011] 1. The high-voltage lightning arrester bushing based on the pultrusion winding process described in the utility model has excellent axial bending and tensile properties due to the longitudinal fibers. The strength is more than doubled compared with existing products. At the same time, a special process is used to further improve the circumferential strength of the product.
[0012] 2. The high-voltage lightning arrester bushing based on the pultrusion and winding process described in the utility model has relatively high product production efficiency and is environmentally friendly.
[0013] 3. The utility model discloses a high-voltage arrester bushing based on a pultrusion winding process, and the winding process has low requirements on the viscosity of the resin system, and no bubbles will appear inside the product.
[0014] 4. The high-voltage lightning arrester bushing based on the pultrusion winding process described in the utility model has a low resin content and a low unit price of resin. In addition, the pultrusion winding process allows a resin formula with a higher viscosity and better process compatibility. These characteristics further reduce the cost of the product.
[0015] 5. The high-voltage lightning arrester bushing based on the pultrusion and winding process described in the utility model does not produce scraps during the production process, thus avoiding waste. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model will be further described below in conjunction with the accompanying drawings.
[0017] Figure 1 It is a stereogram in the utility model;
[0018] Figure 2 It is a structural schematic diagram of the utility model;
[0019] Figure 3 It is a stereogram of the second embodiment of the utility model;
[0020] Figure 4 It is a structural schematic diagram of the second embodiment of the utility model;
[0021] Figure 5 It is a three-dimensional diagram of the winding method in the utility model;
[0022] Figure 6 This is a schematic diagram of the structure of the winding method in the utility model
[0023] Legend:
[0024] 1. Outer lining layer; 2. First longitudinal fiber layer; 3. Wrapped fiber layer; 4. Second longitudinal fiber layer; 5. Inner lining layer; 6. First fiber cloth; 7. Second fiber cloth. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] Specific examples are given below.
[0027] like Figure 1 and Figure 2 As shown, a high-voltage lightning arrester bushing based on a pultrusion winding process described in an embodiment of the utility model comprises an outer lining 1; a first longitudinal fiber layer 2 is provided at the bottom of the outer lining 1; a winding fiber layer 3 is provided at the bottom of the first longitudinal fiber layer 2; a second longitudinal fiber layer 4 is provided at the bottom of the winding fiber layer 3; an inner lining 5 is provided at the bottom of the second longitudinal fiber layer 4; when working, the inner lining 5 is mainly composed of polyester fiber cloth and continuous fiber felt, which functions to increase the corrosion resistance of the bottom and improve the surface smoothness of the bottom, the first longitudinal fiber layer 2 and the second longitudinal fiber layer 4 mainly play the role of process layers, and also greatly increase the longitudinal bending resistance and tensile properties of the produced high-voltage lightning arrester bushing, and the outer lining 1 is mainly composed of composite insulating cloth, which plays a role in preventing cracking.
[0028] like Figure 1 and Figure 2 As shown, a first fiber cloth 6 is provided between the outer lining layer 1 and the first longitudinal fiber layer 2; a second fiber cloth 7 is provided between the second longitudinal fiber layer 4 and the inner lining layer 5; this step can improve the overall performance of the produced high-voltage lightning arrester bushing by providing the first fiber cloth 6 between the outer lining layer 1 and the first longitudinal fiber layer 2, and providing the second fiber cloth 7 between the second longitudinal fiber layer 4 and the inner lining layer 5.
[0029] Embodiment 2
[0030] like Figure 3 and Figure 4 As shown, the first longitudinal fiber layer 2 and the winding fiber layer 3 are multiple and cross-stacked between the outer lining layer 1 and the inner lining layer 5; this step adopts a secondary winding process, that is, the first longitudinal fiber layer 2 and the winding fiber layer 3 are alternately wound and pultruded to form a sandwich structure between the outer lining layer 1 and the inner lining layer 5, which can further improve the overall performance of the produced high-voltage lightning arrester bushing.
[0031] 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 are only for explaining 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 utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A high-voltage arrester bushing based on a pultrusion winding process, comprising an outer lining layer (1); characterized in that: A first longitudinal fiber layer (2) is provided at the bottom of the outer lining layer (1); a winding fiber layer (3) is provided at the bottom of the first longitudinal fiber layer (2); a second longitudinal fiber layer (4) is provided at the bottom of the winding fiber layer (3); and an inner lining layer (5) is provided at the bottom of the second longitudinal fiber layer (4).
2. According to claim 1, a high-voltage arrester bushing based on pultrusion winding process is characterized in that: The wound fiber layer (3) is formed by two groups of different fibers being wound in opposite directions.
3. The high-voltage arrester bushing based on the pultrusion winding process according to claim 2 is characterized in that: A first fiber cloth (6) is provided between the outer lining layer (1) and the first longitudinal fiber layer (2); and a second fiber cloth (7) is provided between the second longitudinal fiber layer (4) and the inner lining layer (5).