Outdoor on-load voltage regulation gas relay protection isolation cover

Abstract

The utility model relates to an outdoor on-load voltage regulation gas relay protection isolation cover which comprises a semi-closed cuboid protection isolation cover and a semi-closed slope type protection isolation cover. The semi-closed cuboid protective isolation hood is of a cuboid structure with an opening in the bottom face and is installed on an upper cover of the on-load voltage regulation gas relay, the semi-closed slope type protective isolation hood is fixedly installed on the end face of one side of the semi-closed cuboid protective isolation hood, and the upper end face of the semi-closed slope type protective isolation hood is of a slope structure. The bottom surface of the device is of an open structure, and the device is installed at a cable inlet of the on-load voltage regulation gas relay. According to the utility model, the rainproof and dustproof effects can be greatly improved, and troubleshooting of maintainers is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment, and relates to a on-load tap-changer gas relay protection isolation cover, in particular to a on-load tap-changer gas relay protection isolation cover for outdoor use. Background Technique

[0002] In recent years, China has vigorously developed the new energy industry. In response to the national call, our unit successfully put into operation a gas turbine unit in 2021. The on-load tap-changer gas relay is located above the on-load tap-changer transformer body of the high-voltage auxiliary transformer of the gas turbine unit and belongs to outdoor equipment. It is not easy to conduct daily patrol inspections, and the regular maintenance period is long. In case of rainy and humid weather, it is easy to cause the heavy gas protection to malfunction, resulting in the unplanned shutdown of the unit, and the losses caused to our unit are unimaginable.

[0003] Therefore, the utility model proposes a on-load tap-changer gas relay protection isolation cover for outdoor use.

[0004] After retrieval, no public documents of prior art identical or similar to the utility model have been found. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and propose a on-load tap-changer gas relay protection isolation cover for outdoor use, which is reasonable in design, convenient for regular maintenance, installation, disassembly and cleaning.

[0006] The utility model solves its practical problems by adopting the following technical solutions:

[0007] A on-load tap-changer gas relay protection isolation cover for outdoor use includes: a semi-enclosed cuboid protection isolation cover and a semi-enclosed sloping protection isolation cover; the semi-enclosed cuboid protection isolation cover is a cuboid structure with an open bottom surface, which is installed on the upper cover of the on-load tap-changer gas relay. On one side end face of the semi-enclosed cuboid protection isolation cover, a semi-enclosed sloping protection isolation cover is fixedly installed. The upper end face of the semi-enclosed sloping protection isolation cover is a sloping structure, and its bottom surface is an open structure, which is installed at the cable inlet of the on-load tap-changer gas relay.

[0008] Moreover, two fastening screws are installed on each of the two side end faces of the semi-enclosed cuboid protection isolation cover.

[0009] Moreover, both the semi-enclosed cuboid protection isolation cover and the semi-enclosed sloping protection isolation cover are made of stainless steel material.

[0010] Moreover, a waterproof wrapping cloth is also provided at the cable inlet of the on-load tap-changer gas relay.

[0011] Advantages and Beneficial Effects of the Utility Model

[0012] 1. The present utility model proposes a on-load tap-changer gas relay protection isolation cover for outdoor use. To overcome the harsh environment where the on-load tap-changer gas relay is located and ensure the safe operation of the equipment and environmental safety, the small semi-enclosed protection isolation cover of the present utility model is installed above the on-load tap-changer gas relay device. While greatly improving the rain and dust protection effect, it will not affect the maintenance personnel in troubleshooting faults.

[0013] 2. The present utility model proposes a on-load tap-changer gas relay protection isolation cover for outdoor use, including: a semi-enclosed cuboid protection isolation cover and a semi-enclosed ramp protection isolation cover welded to the cuboid protection isolation cover. According to the size of the on-load tap-changer gas relay, a semi-enclosed cuboid protection isolation cover with a suitable size is customized and detachably installed on the upper cover of the on-load tap-changer gas relay to cover the upper cover of the on-load tap-changer gas relay, which can prevent rain and dust from entering the upper cover and prevent personnel from accidentally touching it.

[0014] 3. According to the design requirements, a part of the front stainless steel plate of the present utility model is cut off to make a semi-enclosed ramp protection isolation cover, which is welded to the semi-enclosed cuboid protection isolation cover of the main body to ensure that there is no deposition of rain and dust at the cable inlet of the on-load tap-changer gas relay, and better improves the protection effect. The part protecting the cable inlet of the gas relay adopts a ramp design, and the main function is to ensure that liquid substances such as rain and snow will not stay on the protection isolation cover for a long time, but directly flow away along the ramp, avoiding the erosion of the protection isolation cover and making it more durable.

[0015] 4. The semi-enclosed cuboid protection isolation cover and the semi-enclosed ramp protection isolation cover of the present utility model are both made of 304 stainless steel, which better avoids the possibility of the gas relay being corroded in the industrial environment and has high toughness and strength in outdoor high-temperature and extremely cold weather.

[0016] 5. During regular maintenance of the present utility model, only the fastening screws at both end faces of the semi-enclosed cuboid protection isolation cover need to be loosened, and the entire protection isolation cover can be removed for cleaning, which is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the structural schematic diagram of the on-load tap-changer gas relay;

[0019] Figure 3 is the schematic diagram of the use state of the present utility model;

[0020] Description of the reference numerals:

[0021] 1-semi-enclosed sloped protective isolation cover; 2-semi-enclosed rectangular protective isolation cover; 3-fastening screws; 4-on-load voltage-regulating gas relay body; 5-on-load voltage-regulating gas relay upper cover; 6-on-load voltage-regulating gas relay cable inlet. DETAILED DESCRIPTION

[0022] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0023] A protective isolation cover for an outdoor on-load voltage regulating gas relay, such as Figures 1 to 3 As shown, it includes: a semi-enclosed rectangular protective isolation cover and a semi-enclosed sloped protective isolation cover; the semi-enclosed rectangular protective isolation cover is a rectangular structure with an open bottom, which is installed on the upper cover of the on-load voltage-regulating gas relay, and a semi-enclosed sloped protective isolation cover is fixedly installed on one side end face of the semi-enclosed rectangular protective isolation cover, the upper end face of the semi-enclosed sloped protective isolation cover is a slope structure, and its bottom face is an open structure, and is installed at the cable inlet of the on-load voltage-regulating gas relay.

[0024] In this embodiment, two fastening screws are respectively installed on the two side end faces of the semi-enclosed rectangular protective isolation cover.

[0025] In this embodiment, the semi-enclosed rectangular protective isolation cover and the semi-enclosed sloped protective isolation cover are both made of stainless steel.

[0026] In this embodiment, a waterproof wrapping cloth is also provided at the cable inlet of the on-load tap-changing gas relay.

[0027] The importance of designing and installing this utility model lies in:

[0028] The on-load voltage-regulating gas relay is installed on an outdoor on-load voltage-regulating transformer, which is exposed to wind, sun and rain in a relatively harsh environment, which can easily accelerate the aging of the seals on the upper cover of the on-load voltage-regulating gas relay and the cable inlet of the on-load voltage-regulating gas relay.

[0029] It has been found in practice that rainwater and dust from the outside enter the junction box of the on-load tap-changing gas relay through the leakage point. When accumulated to a certain extent, it will cause the insulation of the terminal to the ground to decrease, thus causing a DC grounding fault. If a short circuit is caused between the terminals, the light gas action signal may be mistakenly sent, and the heavy gas may be misoperated, causing a major power outage.

[0030] Therefore, it is necessary to develop a protective isolation cover for an outdoor on-load voltage-regulating gas relay to protect the upper cover and the cable inlet of the on-load voltage-regulating gas relay to solve the above problems.

[0031] The innovation of the utility model lies in:

[0032] 1. In addition to installing a semi - enclosed cuboid protective isolation cover on the cover of the on - load tap - changing gas relay, a semi - enclosed ramp - type protective isolation cover is also installed at the cable inlet of the on - load tap - changing gas relay. It is fully welded with the semi - enclosed cuboid protective isolation cover on the upper cover to form an integral whole, which can not only prevent rainwater and dust from seeping into the on - load tap - changing gas relay from the upper cover, but also prevent rain, snow and water from entering through the cable inlet. With the use of waterproof wrapping cloth, it can prevent moisture, damp, dust and oil from entering the junction box to the greatest extent, and avoid DC grounding and misoperation of protection.

[0033] 2. Install two fastening screws (set screws) on each of the two end faces of the semi - enclosed cuboid protective isolation cover. After installing the protective cover, tighten the set screws to ensure that the protective isolation cover of the on - load tap - changing gas relay is firmly connected to the gas relay body, preventing the protective isolation cover of the on - load tap - changing gas relay from falling off and causing accidents.

[0034] 3. The protective isolation cover of the on - load tap - changing gas relay is made of stainless steel, which is durable and beautiful, and can effectively play a protective role.

[0035] It should be emphasized that the embodiments described in the present utility model are illustrative rather than restrictive. Therefore, the present utility model includes but is not limited to the embodiments described in the specific embodiments. Any other embodiments obtained by those skilled in the art according to the technical solutions of the present utility model also belong to the scope of protection of the present utility model.

Claims

1. A protective isolation cover for an outdoor on-load voltage regulating gas relay, characterized in that: include: A semi-enclosed rectangular protective isolation cover and a semi-enclosed sloped protective isolation cover; the semi-enclosed rectangular protective isolation cover is a rectangular structure with an open bottom, installed on the upper cover of the on-load voltage-regulating gas relay, and a semi-enclosed sloped protective isolation cover is fixedly installed on one side end face of the semi-enclosed rectangular protective isolation cover, the upper end face of the semi-enclosed sloped protective isolation cover is a sloped structure, and its bottom face is an open structure, and is installed at the cable inlet of the on-load voltage-regulating gas relay.

2. The protective isolation cover for an outdoor on-load voltage regulating gas relay according to claim 1 is characterized in that: Two fastening screws are respectively installed on the two side end faces of the semi-enclosed rectangular protective isolation cover.

3. The protective isolation cover for an outdoor on-load voltage regulating gas relay according to claim 1 is characterized in that: The semi-enclosed rectangular protective isolation cover and the semi-enclosed sloped protective isolation cover are both made of stainless steel.

4. The protective isolation cover for an outdoor on-load voltage regulating gas relay according to claim 1 is characterized in that: A waterproof wrapping cloth is also provided at the cable inlet of the on-load voltage-regulating gas relay.

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