CN213124254U

CN213124254U - Outdoor alternating-current high-voltage isolating switch for high voltage

Info

Publication number: CN213124254U
Application number: CN202021930759.7U
Authority: CN
Inventors: 陈俊东
Original assignee: Chongqing Gaokai Power Equipment Co ltd
Current assignee: Chongqing Gaokai Power Equipment Co ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-05-04
Anticipated expiration: 2030-09-07

Abstract

The utility model discloses an outdoor interchange high voltage isolator for high voltage electricity, including the landing leg, the top of landing leg and the bottom fixed connection of fixed plate, the inside of fixed plate has seted up the connecting hole, the top of fixed plate is provided with the base, one side of base is provided with first insulating pillar, the top of first insulating pillar is provided with first electrically conductive plug-in strip, one side of first insulating pillar is provided with second insulating pillar, the top of second insulating pillar is provided with second electrically conductive plug-in strip, be provided with transmission between first insulating pillar and the second insulating pillar, transmission's surface sets up rust-resistant thin layer; this an outdoor interchange high voltage isolator for high-tension electricity is through setting up rust-resistant thin layer, the rust of avoiding transmission surface that can be fine, can also avoid transmission to suffer various harmful gas's invasion simultaneously, makes transmission's life increase to a certain extent.

Description

Outdoor alternating-current high-voltage isolating switch for high voltage

Technical Field

The utility model relates to a high voltage isolator technical field specifically is an outdoor interchange high voltage isolator for high-voltage electricity.

Background

The high-voltage isolating switch is an important switching device in an electric system of a power plant and a transformer substation and needs to be matched with a high-voltage circuit breaker for use. The isolating switch is suitable for indoor devices with three-phase alternating current of 50Hz and rated voltage of 12 KV. For switching on, switching off or switching the line in the case of a voltage-loaded train of high-voltage equipment. The main functions are as follows: the safety of the high-voltage electrical appliance and the device during maintenance work is ensured, the voltage isolation function is realized, the high-voltage electrical appliance and the device cannot be used for cutting off, inputting load current and cutting off short-circuit current, and only can be used for certain switching operation without generating strong electric arcs, namely the high-voltage electrical appliance and the device do not have the arc extinguishing function; the voltage class is divided into an indoor type and an outdoor type according to different installation places, and is divided into a single column type, a double column type and a three column type according to the number of the insulating support columns, and each voltage class is provided with optional equipment. The high-voltage isolating switch ensures the safety of the high-voltage electrical appliance and the device during maintenance work, plays a role of isolating voltage, cannot be used for cutting off, putting in load current and cutting off short-circuit current, and can only be used for certain switching operations without generating strong electric arcs, namely, the high-voltage isolating switch does not have an arc extinguishing function; the voltage class is divided into an indoor type and an outdoor type according to different installation places, and is divided into a single column type, a double column type and a three column type according to the number of the insulating support columns, and each voltage class is provided with optional equipment. The high-voltage distribution device can also reliably isolate the part needing power failure from the electrified part so as to ensure the safety of maintenance work. The contacts of the high-voltage isolating switch are completely exposed in the air and have obvious disconnection points, the isolating switch is not provided with an arc extinguishing device, and therefore the isolating switch cannot be used for cutting off load current or short-circuit current, otherwise, under the action of high voltage, the disconnection points generate strong electric arcs and are difficult to extinguish by themselves, even flashover (relative ground or interphase short circuit) can be caused, equipment is burnt, and personal safety is endangered, namely, a serious accident of pulling the isolating switch under load is caused. The high-voltage isolating switch can also be used for carrying out switching operation of certain circuits so as to change the operation mode of the system. For example: in a dual bus circuit, a high voltage isolation switch may be used to switch the circuit in operation from one bus to the other. Installation of the high-voltage isolating switch: the outdoor isolating switch is horizontally installed in the open air, so that the porcelain supporting bottle with the porcelain skirt can really play a role in preventing rain; when the indoor isolating switch is vertically installed, the static contact is arranged above and can be installed in an inclined mode at a certain angle with the sleeve. Generally, a fixed contact is connected with a power supply, a moving contact is connected with a load, but an isolating switch arranged in a power receiving cabinet adopts a cable to feed wires, the power supply is arranged on the side of the moving contact, and the connection method is commonly called 'reverse fire feeding'. The two sides of the isolating switch are firmly connected with the bus and the cable, and when copper and aluminum conductors contact, a copper-aluminum transition joint is adopted to prevent galvanic corrosion. The moving and static contacts of the isolating switch are aligned, otherwise, a side impact phenomenon occurs during closing, so that the pressure of the contact surface of the moving and static contacts is not uniform after closing, and poor contact is caused. The operating mechanism and the transmission mechanism of the isolating switch are well adjusted, so that the opening and closing operation can be normally carried out without a strength phenomenon. The requirement of three phases in the same period is also met, namely the three-phase moving contacts act simultaneously when the switch is switched on and off, and the deviation in different periods is less than 3 MM. In addition, when the switch is in a switch-on position, the moving contact needs to have enough cutting-in depth to ensure that the contact area meets the requirement, but the closing of the contact is not allowed, the moving contact is required to have a gap of 3-5 MM from the base of the static contact, otherwise, the support porcelain bottle of the static contact is broken when the switch is switched on too hard. In the pulling-apart position, the moving contact and the static contact have enough pulling-apart distance to effectively isolate the electrified part, and the distance is not less than 160MM, or the pulling-apart angle between the moving contact and the static contact is not less than 65 degrees.

The prior art has the following defects or problems:

1. after a high-voltage outdoor alternating-current high-voltage isolating switch used in the current market is used for a long time, if a transmission device is checked and maintained irregularly, the surface of the transmission device is easy to rust, and the using effect of the transmission device is influenced;

2. when carrying out fixed mounting with the landing leg, the outdoor high voltage isolator that exchanges of high voltage electricity is the welding for the majority, and the outdoor high voltage isolator that exchanges is not convenient for to a certain extent is connected with the landing leg, moreover, if the isolator later stage breaks down and needs wholly dismantle, very inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's weak point, provide an outdoor interchange high voltage isolator for high-voltage electricity to solve the problem that proposes in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the novel multifunctional electric heating device comprises supporting legs, the top of landing leg and the bottom fixed connection of fixed plate, the connecting hole has been seted up to the inside of fixed plate, the top of fixed plate is provided with the base, one side of base is provided with first insulating pillar, the top of first insulating pillar is provided with first electrically conductive plug-in strip, one side of first insulating pillar is provided with the insulating pillar of second, the top of the insulating pillar of second is provided with the electrically conductive plug-in strip of second, be provided with transmission between first insulating pillar and the insulating pillar of second, transmission's surface sets up rust-resistant thin layer.

As the utility model discloses an optimal technical scheme, the base is provided with aperture and bolt with the junction of fixed plate, the base passes through aperture and bolt and connecting hole and fixed plate threaded connection, the internal diameter size of connecting hole and the external diameter size looks adaptation of bolt.

As the preferred technical scheme of the utility model, rust-resistant thin layer is made by the tetrafluoroethylene material.

As the preferred technical scheme of the utility model, transmission's surface and rust-resistant thin layer fixed connection.

As the preferred technical scheme of the utility model, the bottom of first insulating pillar and second insulating pillar all with the top fixed connection of base.

As the utility model discloses a preferred technical scheme, the fixed plate is the rectangle, the quantity of connecting hole is four groups.

Compared with the prior art, the utility model provides an outdoor interchange high voltage isolator for high-voltage electricity possesses following beneficial effect:

1. according to the outdoor alternating-current high-voltage isolating switch for the high voltage, the rust on the surface of the transmission device can be well avoided by arranging the antirust thin layer, meanwhile, the transmission device can be prevented from being invaded by various harmful gases, and the service life of the transmission device is prolonged to a certain extent;

2. this an outdoor interchange high voltage isolator for high voltage electricity through setting up the fixed plate, is convenient for this high voltage isolator and the high-speed joint of landing leg, moreover, when high voltage isolator broke down and need the whole change, the staff's of being convenient for dismantles, and it is comparatively convenient to use.

Drawings

Fig. 1 is a schematic plan view of the structure of the present invention;

FIG. 2 is a schematic plan view of an insulating pillar according to the present invention;

FIG. 3 is a schematic plan view of the anti-rust thin layer of the structure of the present invention;

fig. 4 is a perspective view of the fixing plate of the structure of the present invention.

In the figure: 1. a support leg; 2. a fixing plate; 3. a second insulating support; 4. a second conductive blade; 5. A first conductive blade; 6. a first insulating support; 7. a base; 8. a transmission device; 9. a thin anti-rust layer; 10. and connecting the holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in this embodiment: including landing leg 1, landing leg 1's top and fixed plate 2's bottom fixed connection, connecting hole 10 has been seted up to fixed plate 2's inside, fixed plate 2's top is provided with base 7, one side of base 7 is provided with first insulation pillar 6, first insulation pillar 6's top is provided with first electrically conductive plug-in strip 5, one side of first insulation pillar 6 is provided with second insulation pillar 3, second insulation pillar 3's top is provided with second electrically conductive plug-in strip 4, be provided with transmission 8 between first insulation pillar 6 and the second insulation pillar 3, transmission 8's surface sets up rust-resistant thin layer 9.

In the embodiment, a small hole and a bolt are arranged at the joint of the base 7 and the fixed plate 2, the base 7 is in threaded connection with the fixed plate 2 through the small hole, the bolt and the connecting hole 10, and the inner diameter of the connecting hole 10 is matched with the outer diameter of the bolt, so that the base 7 and the supporting leg 1 at the lower end of the fixed plate 2 can be conveniently connected; the thin antirust layer 9 is made of tetrafluoroethylene material, so that the antirust sleeve 11 has a good antirust function; the outer surface of the transmission device 8 is fixedly connected with the antirust thin layer 9, and the antirust thin layer 9 is arranged, so that the looseness of the transmission device 8 caused by rusting can be avoided, meanwhile, the transmission device 8 can be invaded by various harmful gases, and the service life of the transmission device 8 is effectively prolonged; the bottoms of the first insulating support 6 and the second insulating support 3 are fixedly connected with the top of the base 7, so that the structure is more reasonable; the fixing plate 2 is rectangular, and the number of the connecting holes 10 is four, so that the fixing plate 2 and the base 7 are convenient to connect.

The utility model discloses a theory of operation and use flow: when the user uses, thereby drive the first electrically conductive plug-in strip 5 of first insulating pillar 6 department and the electrically conductive plug-in strip 4 of second insulating pillar 3 department through transmission 8 and carry out separating brake and combined floodgate, fixed plate 2 through the base 7 lower extreme, can be quick be connected base 7 and the landing leg 1 of fixed plate 2 department, it is comparatively convenient to use, through rust-resistant thin layer 9, can prevent that transmission 8 from suffering the erosion of various harmful gas, can make very well that transmission 8 stands the sand blown by the wind, the examination of sleet, also make this transmission 8's life more permanent simultaneously.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an outdoor interchange high voltage isolator for high-voltage electricity which characterized in that: including landing leg (1), the top of landing leg (1) and the bottom fixed connection of fixed plate (2), connecting hole (10) have been seted up to the inside of fixed plate (2), the top of fixed plate (2) is provided with base (7), one side of base (7) is provided with first insulating pillar (6), the top of first insulating pillar (6) is provided with first electrically conductive plug-in strip (5), one side of first insulating pillar (6) is provided with the insulating pillar of second (3), the top of the insulating pillar of second (3) is provided with the electrically conductive plug-in strip of second (4), be provided with between first insulating pillar (6) and the insulating pillar of second (3) transmission (8), the surface of transmission (8) sets up rust-resistant thin layer (9).

2. An outdoor ac high voltage isolator for high voltage electricity according to claim 1 wherein: the base (7) is provided with aperture and bolt with the junction of fixed plate (2), base (7) is through aperture and bolt and connecting hole (10) and fixed plate (2) threaded connection, the internal diameter size of connecting hole (10) and the external diameter size looks adaptation of bolt.

3. An outdoor ac high voltage isolator for high voltage electricity according to claim 1 wherein: the anti-rust thin layer (9) is made of tetrafluoroethylene material.

4. An outdoor ac high voltage isolator for high voltage electricity according to claim 1 wherein: the outer surface of the transmission device (8) is fixedly connected with the antirust thin layer (9).

5. An outdoor ac high voltage isolator for high voltage electricity according to claim 1 wherein: the bottoms of the first insulating support column (6) and the second insulating support column (3) are fixedly connected with the top of the base (7).

6. An outdoor ac high voltage isolator for high voltage electricity according to claim 1 wherein: the fixing plate (2) is rectangular, and the number of the connecting holes (10) is four.