CN206650324U - A kind of high-tension switch cabinet - Google Patents

Abstract

The utility model discloses a high-voltage switchgear, which comprises a cabinet body for installing and accommodating electrical components. A high-voltage fuse, an isolating switch, a grounding switch, a transformer for a mutual-inductance station are fixedly arranged in the cabinet, and the transformer for a mutual-inductance station is fixed. Installed on the fixed installation beam bracket not less than 25cm away from the inner top of the cabinet, the isolating switch is composed of a conductive switch knife, a static contact, and a high-voltage fuse. The high-voltage fuse is fixed and connected in series on the conductive switch knife. The lower end is hinged on the hinged seat with support for the porcelain bottle set on the bottom bracket of the cabinet, the upper end of the conductive knife is sucked and connected to the wiring pile, and the hinged seat with the support for the porcelain bottle is inclined at an angle relative to the side wall of the cabinet. 45°±1. The utility model is safe and reliable in use and operation, especially the combination of the high-voltage fuse and the isolating switch greatly reduces the internal occupied space of the electrical switch cabinet, and the installation, maintenance and repair are convenient, and the manufacturing cost and the construction cost of various related supporting facilities are reduced. .

Description

A high voltage switch cabinet

technical field

The utility model relates to a cabinet body of high-voltage transmission equipment, in particular to a high-voltage switch cabinet with a station transformer.

Background technique

High-voltage switchgear refers to the role of on-off, control or protection in power system power generation, transmission, distribution, power conversion and consumption. High-voltage switchgear is used as electrical products with a voltage level of 3.6kV-550kV, and high-voltage isolating switches and earthing switch, high-voltage load switch, high-voltage automatic reclosing and sectionalizer, high-voltage operating mechanism, high-voltage explosion-proof power distribution device and high-voltage switchgear, etc. Switches, isolating switches, grounding switches, transformers and station transformers And control, measurement, protection, regulation devices A complete set of power distribution equipment composed of internal connectors, auxiliary parts, housings and support parts, etc. The space in the space uses air or composite insulating materials as the medium to receive and distribute the three-phase electric energy of the power grid. Various electrical components in the switch cabinet are assembled The degree is not high, and the installation procedure is very complicated. The design of the cabinet needs to reserve enough space for the installation of various electrical components, resulting in a large cabinet size, and stricter requirements for outdoor and indoor related facilities. Reduced the manufacturing costs of infrastructure and cabinets.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a high-voltage switchgear.

In order to achieve the above purpose, the technical solution adopted by the utility model to solve the technical problem is: a high-voltage switchgear, including a cabinet for installing and accommodating electrical components, and a high-voltage circuit breaker and a load switch are fixed in the cabinet. , contactor, high-voltage fuse, isolating switch, grounding switch, transformer for mutual induction station, transformer for mutual induction station is fixedly installed on the fixed installation beam bracket not less than 25cm from the inner top of the cabinet body, transformer for mutual induction station There are three-phase wiring piles protruding from the top, and the bottom of the corresponding mutual induction station transformer is respectively provided with wiring piles corresponding to the three-phase wiring piles on the top. The isolating switch is composed of a conductive switch knife, a static contact, and a high-voltage fuse. , the high-voltage fuse is fixedly connected in series to the conductive switch knife, the lower end of the conductive switch knife is hinged on the hinged seat with a porcelain bottle on the bottom bracket of the cabinet, and the upper end of the conductive switch knife is sucked and connected to the wiring pile. The angle of inclination of the hinged seat with support for the porcelain bottle relative to the side wall of the cabinet is 45°±1.

The utility model further provides a high-voltage switch cabinet, which is fixedly installed with a beam bracket and a cabinet body into an integrated structure, and the installation beam bracket is provided with a fixed connection installation hole for installing a transformer for a mutual induction station. The hinged seat is fixedly installed on the fixed inclined platform on the rear side wall of the cabinet, and the inclined angle of the fixed inclined platform relative to the pair of side walls of the cabinet is 45°.

The utility model further provides a high-voltage switchgear, the high-voltage fuse of which includes a melting tube, a supporting insulating sleeve, and a contact seat installed. The two ends of each are respectively fixedly clamped in the mounting contact seat.

Beneficial effects of the utility model: the utility model is safe and reliable in use and operation, especially the combination of the high-voltage fuse and the isolating switch, which greatly reduces the internal occupied space of the electrical switch cabinet, and is convenient for installation and maintenance, and further directly reduces the number of switches. The manufacturing cost of the cabinet body and internal accessories indirectly reduces the construction cost of various related supporting facilities.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is the forward structure schematic diagram of the present utility model;

Fig. 2 is the lateral structure schematic diagram of the utility model;

Among them, 1. Cabinet body; 2. Isolating switch; 3. Mutual inductance station transformer; 4. Fixed installation beam bracket; 5. Three-phase wiring pile; 6. Wiring pile; , Fixed tilting platform.

detailed description

The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

Example 1

As shown in Figure 1 and Figure 2, the utility model provides a high-voltage switch cabinet, including a cabinet body 1 for installing and accommodating electrical components, and a high-voltage circuit breaker, a load switch, and a contactor are fixed in the cabinet body 1 , high-voltage fuse, isolating switch 2, grounding switch, transformer 3 for mutual induction station, transformer 3 for mutual induction station is fixedly installed on the fixed installation beam bracket 4 not less than 25cm away from the inner top of cabinet 1, and mutual induction station There are three-phase wiring piles 5 protruding from the top of the transformer 3, and the bottoms of the corresponding mutual-inductance station transformers 3 are respectively provided with wiring piles 6 corresponding to the three-phase wiring piles 5 on the top, and the isolating switch 2 is composed of conductive switches, It is composed of static contacts and high-voltage fuses. The high-voltage fuses are fixed and connected in series to the conductive switch blades. The upper end is sucked and connected to the wiring pile 6, and the hinged seat 7 with the porcelain bottle is inclined at an angle of 45°±1 relative to the side wall of the cabinet body 1.

The fixed installation crossbeam support 4 and the cabinet body 1 have an integrated structure, and the installation crossbeam support 4 is provided with a fixed connection installation hole for installing a transformer 3 for a mutual induction station, and the hinged seat 7 with a support porcelain bottle is fixedly installed on the On the fixed inclined platform 8 on the rear side wall of the cabinet body 1 , the inclined angle of the fixed inclined platform 8 relative to the pair of side walls of the cabinet body 1 is 45°.

The high-voltage fuse includes a fuse tube, a supporting insulating sleeve, and a contact seat for installation. The conductive switch blade of the isolating switch 2 is provided with a supporting insulating sleeve and a contact seat for installation. seat.

The cabinet body 1 is made of metal support profiles and metal plates. The cuboid line support profiles of the cabinet body 1 are G-profiles that are punched and bent from steel plates, and the rest of the support profiles are bent from steel plates after punching. The connection and fastening of the U profile and the supporting profile adopts the bolt assembly structure.

The isolating switch 2 is mainly used to isolate the high-voltage power supply to ensure safe maintenance Therefore, its structural feature is that it has a clearly visible disconnection gap after disconnection. Another structural feature of it is that there is no special arc extinguishing device, so it cannot be operated under load. But it allows a certain small current to be switched on and off For example, the no-load transformer charging capacitor current of no-load transformer with excitation current not greater than 2A, no-load line and voltage transformer circuit with no more than 5A.

The high-voltage fuse is one of the simplest protective devices When the network is overloaded or short-circuited, the fuse can automatically disconnect the circuit independently So as to achieve the purpose of protecting electrical equipment.

The utility model is safe and reliable in use and operation, especially the combination of high-voltage fuses and isolating switches greatly reduces the internal occupied space of the electrical switch cabinet, and is convenient for installation and maintenance, further directly reducing the production of the switch cabinet and internal accessories The manufacturing cost indirectly reduces the construction cost of various related supporting facilities.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (3)

1. A high-voltage switch cabinet, comprising a cabinet (1) for installing and accommodating electrical components, in which a high-voltage circuit breaker, a load switch, a contactor, a high-voltage fuse, and a disconnector are fixedly arranged in the cabinet (1) (2), grounding switch, mutual induction type station transformer (3), it is characterized in that, mutual induction type station use transformer (3) is fixedly installed in the fixed installation crossbeam support ( 4) above, the top of the mutual induction station transformer (3) protrudes from the top of the three-phase wiring pile (5), and the bottom of the corresponding mutual induction station transformer (3) corresponds to the three-phase wiring pile (5) on the top respectively. Wiring post (6), the isolating switch (2) is composed of a conductive switch blade, a static contact, and a high-voltage fuse. (1) On the hinged seat (7) with supporting porcelain bottle on the bottom bracket, the upper end of the conductive knife is sucked and connected on the wiring pile (6), and the hinged seat (7) with supported porcelain bottle is relative to the cabinet The inclination angle of the side wall of the body (1) is 45°±1. 2. A high-voltage switchgear according to claim 1, characterized in that, the fixed mounting beam bracket (4) and the cabinet body (1) are in an integrated structure, and the mounting beam bracket (4) is provided with a The fixed connection installation hole of the transformer (3) for the mutual induction station, the hinged seat (7) with the support porcelain bottle is fixedly installed on the fixed inclined platform (8) on the rear side wall of the cabinet body (1), and the fixed The inclined angle of the inclined platform (8) relative to the pair of side walls of the cabinet body (1) is 45°. 3. A high-voltage switchgear according to claim 1, characterized in that the high-voltage fuse includes a fusion tube, supports an insulating sleeve, and is installed with a contact seat, and a support is provided in the conductive switch blade of the isolating switch (2). The insulating sleeve and the installation contact seat, and the two ends of the melting tube are respectively fixedly clamped in the installation contact seat.