Contact network hardware fitting insulation protection suit and manufacturing process thereof

Abstract

A catenary fitting insulation protection set comprises an insulation protection cover, the insulation protection cover is used for wrapping a horizontal suspension point electrified fitting, the end portion of the insulation protection cover is connected with an insulation clamp, and the insulation clamp is fixed on the horizontal suspension point electrified fitting; in conclusion, by installing the insulation protection sleeve on the overhead line system live-line equipment at the position where the space distance is limited, such as a tunnel portal, the instant grounding problem caused by birds, foreign matter and the like can be effectively prevented, the operation safety and reliability of the overhead line system equipment of the electrified railway are improved, and the practical value is high; in addition, different shapes suitable for the field can be adopted according to hardware fittings and space structures of application places, and the actual field problems are better solved.

Description

Technical Field

[0001] The invention belongs to the technical field of contact network power supply, and in particular relates to a contact network hardware insulation protection set and a manufacturing process thereof. Background Art

[0002] The operating voltage of the electrified railway overhead contact power supply equipment is 27.5Kv high-voltage alternating current at industrial frequency. In some special places, due to spatial location limitations, some of the overhead contact live fittings are not at a safe distance from the grounding body. When invaded by birds, foreign objects and other small animals, it is easy to cause the traction substation circuit breaker to trip, which can cause power outages and affect railway transportation order at the very least, or burn or damage the overhead contact equipment, resulting in an accident failure.

[0003] In some special places or equipment, an effective protective measure can be taken to appropriately reduce the insulation distance between live equipment and grounding bodies without affecting the safety of equipment operation, or to protect against certain instantaneous grounding phenomena, to ensure that power supply is not interrupted and to protect contact network hardware, wires, etc. from being burned by circuit-breaking arcs. For example, in low-clearance tunnels of electrified railways, due to the insufficient safety distance between the horizontally suspended live body and the tunnel vault, when birds fly into the tunnel and stay at the suspension point, it is easy to cause the traction substation to trip. Summary of the invention

[0004] The present invention aims to provide an insulation protection set for contact network hardware and a manufacturing process thereof, so as to solve the technical problem that the contact network live hardware in the existing low-headroom tunnel of the electrified railway is not at a safe distance from the grounding body, which causes birds to stay there when flying in and easily causes the traction transformer to trip.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A contact network hardware insulation protection set comprises an insulation protection cover, the insulation protection cover is used to wrap the live hardware at the horizontal suspension point, an insulation clamp is connected to the end of the insulation protection cover, and the insulation clamp is fixed on the live hardware at the horizontal suspension point.

[0006] Furthermore, the insulating protective cover is made of glass fiber reinforced plastic material.

[0007] Furthermore, the insulating clamp has a U-shaped structure, a bolt is passed through the open end of the insulating clamp, and a nut is arranged on the bolt.

[0008] Furthermore, the insulating clamp is made of high-performance insulating material.

[0009] Furthermore, the bolts and nuts are made of resin material.

[0010] Furthermore, a round hole is formed at the end of the bolt, and a limiting nail is inserted into the round hole.

[0011] A manufacturing process of a contact network hardware insulation protection set, comprising the following steps: preparing 0.6 mm thick glass cloth and resin as raw materials; using a mold for molding, the mold needs to be cleaned and coated with a release agent before use; at a room temperature not lower than 15°C, evenly applying a layer of resin on the mold and then laying 0.6 mm thick glass cloth, repeating this process for a total of six times to form a multi-layer structure; Use tools to scrape each layer of glass cloth flat and remove bubbles to ensure that the layers are even, flat and dense; demold after curing for 12 hours and handle the workpiece carefully to prevent deformation or surface scratches; pre-assemble, inspect, number the workpiece, and repair any minor defects; finally spray paint and the finished product is sent to the finished product warehouse.

[0012] Furthermore, the resin is prepared from a resin raw material and a curing agent, and the ratio of the resin raw material to the curing agent is 100:(1-3).

[0013] Furthermore, during the laying process of the glass cloth, the cutting locations and the seams of the cloth are staggered.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the insulating protective cover of the present invention adopts glass fiber reinforced plastic material, provides excellent electrical insulation performance, effectively prevents electric shock accidents, and has good corrosion resistance and aging resistance, and can resist the influence of harsh environment, thereby extending the service life of the product; the insulating clamp uses high-performance insulating materials (such as polyethylene, polyvinyl chloride, etc.), which further ensures the safety of live metal fittings; the bolts and nuts are made of resin material and are provided with anti-loosening limit pins, which ensures the firmness and reliability of the connection; the manufacturing process of the insulating protective cover of the present invention is clear and standardized, which helps to reduce errors in the production process and improve production efficiency; the use of molds and automated equipment (such as electric single-beam cranes) can speed up production while maintaining high quality standards; reasonable material selection (such as 0.6mm thick glass cloth and an appropriate proportion of resin) can meet performance requirements and control material costs; the selected materials and processes especially take into account the use conditions in different environments, such as the influence of temperature changes on resin curing is taken into consideration to ensure normal operation in both cold and hot environments; when using demoulding wax and other auxiliary materials in the production process, environmental protection factors are taken into consideration, and products with little impact on the environment are selected as much as possible.

[0015] In summary, by installing the insulating protection suit of the present invention on live contact network equipment at spatially limited locations such as tunnel entrances, instantaneous grounding problems caused by birds, foreign objects, etc. can be effectively prevented, and the operating safety and reliability of electrified railway contact network equipment can be improved, which has high practical value; the present invention can also adopt different shapes suitable for the site according to the hardware and spatial structure of the application site to better solve practical problems on site; the insulating protection suit designed with contact network hardware and its manufacturing process not only greatly improves the safety and reliability of the product, but also provides manufacturers with significant competitive advantages by optimizing production and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of a contact network hardware insulation protection set of the present invention; Figure 2 It is a cross-sectional view of an insulation protection set of contact network hardware; Figure 3 It is a cross-sectional view of a contact network hardware insulation protection set from another perspective. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The present invention is further described in detail below in conjunction with embodiments.

[0019] like Figure 1-3 As shown, a specific embodiment of a contact network hardware insulation protection set provided by the present invention is as follows: A contact network hardware insulation protection set includes an insulation protection cover 1, which is made of glass fiber reinforced plastic material. The insulation protection cover 1 is used to wrap the live hardware at the horizontal suspension point. An insulation clamp 2 is connected to the end of the insulation protection cover 1, and the insulation clamp 2 is fixed on the live hardware at the horizontal suspension point.

[0020] The insulating clamp 2 is made of high-performance insulating material, which can be polyethylene, polyvinyl chloride, cross-linked polyethylene or rubber, etc. The insulating clamp 2 has a U-shaped structure, and a bolt 3 is passed through the open end of the insulating clamp 2, and a nut 4 is arranged on the bolt 3; the bolt 3 and the nut 4 are made of resin material. A round hole is opened at the end of the bolt 3, and a limiting nail 5 is inserted into the round hole.

[0021] A manufacturing process of a contact network hardware insulation protection set comprises the following steps: 1. Preparation of raw materials and auxiliary materials The raw materials are 0.6mm thick glass cloth and appropriate resin. Auxiliary materials include demoulding wax, different types of sandpaper (such as 40#, 80#, 120#), brushes, scoops, plastic buckets, saw blades, glue, needles, etc.

[0022] 2. Equipment and tool preparation The equipment includes molds, platforms, and electric single-beam cranes; tools and instruments include electronic scales, rulers, tape measures, steel rulers, height gauges, scissors, unloading platforms, glue barrels, angle grinders, flat grinders, polishers, hammers, pliers, adjustable wrenches, electric drills, electric grinders, etc.

[0023] 3. Production preparation Check the appearance, shape and size of the mold according to the drawing to ensure that it meets the requirements. Cut the 0.6mm glass cloth according to the material quota and prepare the appropriate amount of material. Clean the mold, apply a release agent (such as polyvinyl alcohol solution), and dry it for later use.

[0024] 4. Manufacturing process (4.1) Material preparation: Confirm the resin and 0.6mm glass cloth to be used; predetermine the material quantity for each product: 1.5kg of resin and 5m² of glass cloth.

[0025] (4.2) Resin ratio: The resin is prepared from a resin raw material and a curing agent, and the ratio of the resin raw material to the curing agent is 100:(1-3).

[0026] The exact ratio of resin raw material and curing agent should be adjusted appropriately according to the actual operating ambient temperature to ensure the best curing effect and finished product quality. In a colder environment, the proportion of curing agent may need to be increased to accelerate the curing process; while at higher temperatures, the amount of curing agent can be reduced. It should also be noted that the resin needs to be prepared in a mixing bucket and mixed immediately before use to prevent aging and waste.

[0027] (4.3) Hand lay-up: When the room temperature is not less than 15°C, evenly apply a layer of resin on the mold; lay a layer of 0.6mm glass cloth, and then apply resin, repeat this process for a total of six times to ensure that the glass cloth is completely soaked; use a brush, scraper or degassing roller to scrape the glass cloth flat and expel bubbles to ensure that the layer is even, flat and dense. During the laying process of the glass cloth, the cut parts and the seams of the cloth are staggered to enhance the strength and durability of the product.

[0028] (4.4) Curing treatment: After the workpiece has been cured in the mold for 12 hours, carefully demold it to avoid damage; the workpiece should be placed stably after demolding to prevent deformation and surface scratches.

[0029] (4.5) Pre-assembly and inspection: Pre-assemble the workpieces on the platform according to the drawing requirements and complete necessary mechanical processing (such as drilling); number the workpieces, check their appearance, bubbles, cracks, etc., and record them.

[0030] (4.6) Trimming and spraying: After pre-assembly, any minor defects are repaired and polished; after a comprehensive inspection, it is sprayed with paint and sent to the finished product warehouse.

[0031] 5. Packaging and transportation The packaging should be securely fixed, using materials such as felt or foam to prevent displacement and wear.

[0032] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A contact network hardware insulation protection set, characterized by: It comprises an insulating protective cover, which is used to wrap the live metal fittings at the horizontal suspension point. An insulating clamp is connected to the end of the insulating protective cover, and the insulating clamp is fixed on the live metal fittings at the horizontal suspension point.

2. The contact network hardware insulation protection set according to claim 1, characterized in that: The insulating protective cover is made of glass fiber reinforced plastic material.

3. The contact network hardware insulation protection set according to claim 2, characterized in that: The insulating clamp has a U-shaped appearance, a bolt is passed through the open end of the insulating clamp, and a nut is arranged on the bolt.

4. The contact network hardware insulation protection set according to claim 3, characterized in that: The insulating clamp is made of high-performance insulating material.

5. The contact network hardware insulation protection set according to claim 4, characterized in that: The bolts and nuts are made of resin material.

6. The contact network hardware insulation protection set according to claim 5, characterized in that: A round hole is provided at the end of the bolt, and a limiting nail is inserted into the round hole.

7. A manufacturing process for an insulated protective suit of contact network hardware, characterized in that: The following steps are involved: Prepare 0.6 mm thick glass cloth and resin as raw materials; Use a mold for molding. The mold needs to be cleaned and coated with a release agent before use. At room temperature not lower than 15°C, evenly apply a layer of resin on the mold and then lay a 0.6mm thick glass cloth. Repeat this process six times to form a multi-layer structure. Use tools to scrape each layer of glass cloth flat and remove bubbles to ensure that the layers are even, flat and dense; demold after curing for 12 hours and handle the workpiece carefully to prevent deformation or surface scratches; pre-assemble, inspect, number the workpiece, and repair any minor defects; finally spray paint and the finished product is sent to the finished product warehouse.

8. The manufacturing process of the contact network hardware insulation protection set according to claim 7 is characterized in that: The resin is prepared from a resin raw material and a curing agent, and the ratio of the resin raw material to the curing agent is 100:(1-3).

9. The manufacturing process of the contact network hardware insulation protection set according to claim 8, characterized in that: During the laying process of the glass cloth, the cutting positions and the seams of the cloth are arranged in a staggered manner.

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