CN210006660U

CN210006660U - double-break isolating switch for electrified railway

Info

Publication number: CN210006660U
Application number: CN201921099745.2U
Authority: CN
Inventors: 黄彦全; 张晓鹏; 谭开兵; 林贞礼; 彭加兵; 李无悔; 符蓉
Original assignee: Sichuan Huiyou Electric Co Ltd
Current assignee: Sichuan Huiyou Electric Co Ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-01-31
Anticipated expiration: 2029-07-12

Abstract

The utility model relates to an electric railway double-break isolator, including advancing mechanism and with building fixed mounting's base, be provided with on the base with advancing mechanism complex guide way, fixed mounting has U type insulating tube generating line on the plane of advancing mechanism front end, fixed mounting has the support copper bar on two arms of U type insulating tube generating line, fixed mounting has the moving contact on the support copper bar, still include with building fixed connection's insulator, fixed mounting has generating line and static contact on the insulator the utility model discloses simple structure can effectively guarantee the accurate alignment at moving contact and static contact center.

Description

double-break isolating switch for electrified railway

Technical Field

The utility model belongs to the technical field of isolator, concretely relates to kinds of electrified railway dual-break isolator.

Background

The main characteristic of the isolating switch is that it has no arc-extinguishing ability, and can only open and close the circuit under the condition of no load current. The isolating switch is applied to lines and power supply facilities of various voltage grades, and the lines or equipment are isolated or communicated with a power supply by changing circuit connection.

The isolating switch is widely applied to a 27.5kV electrified railway power supply system, the advantages and disadvantages of the isolation performance relate to the operation safety of a locomotive and the personal safety of railway workers, and the isolating switch adopting a U-shaped insulating tube bus ensures that the isolating switch has two moving contacts which move synchronously, the two moving contacts move together with a propulsion mechanism from top to bottom, the action height is coordinated with , and the safety of the railway power supply system can be better ensured.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an air insulation forms form, forms two fractures when separating the floodgate position, and device simple structure is applicable to electrified railway power supply system's isolator.

In order to achieve the above object, the utility model adopts the following technical scheme:

kinds of electrified railway double-break isolating switches, including propulsion mechanism and base fixed mounting with the building, there are guide ways cooperating with said propulsion mechanism on the said base, the said plane of propulsion mechanism front end is fixed with the U-shaped insulating tube bus bar, the said U-shaped insulating tube bus bar is fixed with the supporting copper bar on two arms, the said supporting copper bar is fixed with the moving contact;

the electrified railway double-fracture isolating switch further comprises an insulator fixedly connected with a building, and a bus and a static contact are fixedly mounted on the insulator.

, the moving contact comprises a tension spring type flat contact and a connecting copper bar fixedly connected with the supporting copper bar through a bolt, a groove is formed in the connecting copper bar, and the tension spring type flat contact is fixedly installed in the groove of the connecting copper bar through a spring.

, the lower end of the U-shaped insulating tube bus is a plane which is formed by bending the insulating tube bus, and the plane at the front end of the propelling mechanism are fixedly arranged at the position .

Further , a double break is visible between the moving contact and the stationary contact in the isolated state.

, the supporting copper bar, the connecting copper bar, the tension spring type flat contact and the static contact are made of red copper with silver-plated surface.

The utility model has the advantages that:

(1) the utility model discloses the lower extreme of well U type insulating tube generating line is planar structure, be favorable to increasing the area of contact between U type insulating tube generating line and the advancing mechanism, the guide way of base also can lead advancing mechanism, this makes advancing mechanism promote U type insulating tube generating line, support the copper bar, connect copper bar and tension spring formula flat contact front and back or during up-and-down reciprocating motion, the skew can not take place at the center of tension spring formula flat contact, guarantee to realize accurate alignment with the static contact, be favorable to tension spring formula flat contact and static contact good contact.

(2) The utility model discloses well support copper bar, connection copper bar, flat contact of extension spring formula and static contact adopt the silvered red copper in surface to make, are favorable to reducing the resistance of contact surface, prevent to excessively generate heat because of the contact surface leads to the resistance increase for a short time.

Drawings

Fig. 1 is a schematic view of the isolation state of the present invention.

Fig. 2 is the schematic diagram of the closing state of the utility model.

Wherein: 1-base, 2-propulsion mechanism, 3-U-shaped insulating tube bus, 4-supporting copper bar, 5-bolt, 6-connecting copper bar, 7-tension spring type flat contact, 8-static contact, 9-bus and 10-insulator.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and is intended to be protected by the present invention.

The following describes in detail embodiments of the present invention with reference to the drawings.

In this embodiment, kinds of double-break disconnecting switches of the electrified railway comprise a propulsion mechanism 2 and a base 1 fixedly installed with a building, wherein a guide groove matched with the propulsion mechanism 2 is arranged on the base 1, a U-shaped insulating tube bus 3 is fixedly installed on a plane at the front end of the propulsion mechanism 2, two arms of the U-shaped insulating tube bus 3 are fixedly provided with supporting copper bars 4, and a moving contact is fixedly installed on the supporting copper bars 4;

the electrified railway double-fracture isolating switch further comprises an insulator 10 fixedly connected with a building, and a bus 9 and a static contact 8 are fixedly mounted on the insulator 10.

The supporting copper bar 4 and the U-shaped insulating tube bus 3 are fixed by bolts, and the bus 9 and the static contact 8 are fixedly installed on the insulator 10 by bolts.

The moving contact comprises a tension spring type flat contact 7 and a connecting copper bar 6 fixedly connected with a supporting copper bar 4 through a bolt 5, a groove is formed in the connecting copper bar 6, and the tension spring type flat contact 7 is fixedly installed in the groove of the connecting copper bar 6 through a spring.

The lower end of the U-shaped insulating tube bus 3 is a plane and is formed by bending the insulating tube bus by the technology, and the plane at the front end of the propelling mechanism 2 are fixedly arranged at .

Wherein, when in an isolated state, a visible double fracture is formed between the moving contact and the static contact 8.

The supporting copper bar 4, the connecting copper bar 6, the tension spring type flat contact 7 and the static contact 8 are made of red copper with silver-plated surfaces.

When the isolating switch needs to be switched on, the pushing mechanism 2 is operated to enable the pushing mechanism 2 to move in the guide groove of the base 1, the pushing mechanism 2 pushes the U-shaped insulating tube bus 3, the supporting copper bar 4, the connecting copper bar 6 and the tension spring type flat contact 7 to move forwards until the tension spring type flat contact 7 is in close contact with the static contact 8, and switching on of the isolating switch is completed.

As shown in fig. 2, when the disconnector is in a closed state, the current passes through the bus 9, the fixed contact 8, the tension spring type flat contact 7, the connecting copper bar 6, and the supporting copper bar 4 on the incoming line side, and then reaches the outgoing line supporting copper bar 4, the connecting copper bar 6, the tension spring type flat contact 7, the fixed contact 8, and the bus 9 on the other side through the U-shaped insulating tube bus 3, so as to complete current carrying.

On the contrary, when the isolation switch is required to be isolated, the locking is released, and the propelling mechanism 2 is operated to separate the movable contact from the static contact 8 to reach the isolation position, as shown in fig. 1. This forms an effective fracture between the incoming line static contact 8 and the moving contact, and an effective fracture between the outgoing line static contact 8 and the moving contact, that is, a double fracture.

In an isolation state, the U-shaped insulating tube bus 3 drives the moving contact to separate from the static contact 8, and a visible double fracture is formed between the tension spring type flat contact 7 and the static contact 8. The distance between the pull spring type flat contact 7 and the static contact 8 in the isolation state is larger than the air insulation gap required by the environment, so that the circuit isolation purpose is achieved.

The utility model discloses well U type insulating tube generating line 3's lower extreme is planar structure, be favorable to increasing the area of contact between U type insulating tube generating line 3 and the advancing mechanism 2, base 1's guide way also can lead to advancing mechanism 2, this makes advancing mechanism 2 promote U type insulating tube generating line 3, support copper bar 4, connect around copper bar 6 and the flat contact 7 of extension spring formula or during up-and-down reciprocating motion, the skew can not take place at the center of the flat contact 7 of extension spring formula, guarantee to realize accurate alignment with static contact 8, be favorable to the flat contact 7 of extension spring formula and the good contact of static contact 8.

The utility model discloses well support copper bar 4, connect copper bar 6, flat contact 7 of extension spring formula and static contact 8 and adopt the silvered red copper in surface to make, be favorable to reducing the resistance of contact surface, prevent to lead to the resistance increase excessively to generate heat because of the contact surface is little.

Claims

The double-break isolating switch of the electrified railway is characterized by comprising a propelling mechanism (2) and a base (1) fixedly mounted with a building, wherein a guide groove matched with the propelling mechanism (2) is formed in the base (1), a U-shaped insulating tube bus (3) is fixedly mounted on the plane of the front end of the propelling mechanism (2), supporting copper bars (4) are fixedly mounted on two arms of the U-shaped insulating tube bus (3), and a moving contact is fixedly mounted on the supporting copper bars (4);

the electrified railway double-fracture isolating switch further comprises an insulator (10) fixedly connected with a building, and a bus (9) and a static contact (8) are fixedly installed on the insulator (10).
2. The kinds of electrified railway double-break disconnecting switch of claim 1, wherein the moving contact comprises a flat tension spring contact (7) and a connecting copper bar (6) fixedly connected with the supporting copper bar (4) through a bolt (5), a groove is arranged on the connecting copper bar (6), and the flat tension spring contact (7) is fixedly installed in the groove of the connecting copper bar (6) through a spring.
3. The double-break disconnecting switch for electric railways according to claim 1, wherein the lower end of the U-shaped insulated tubular busbar (3) is a plane, the lower end is formed by bending the insulated tubular busbar, and the plane at the front end of the propulsion mechanism (2) are fixedly installed at .
4. The double-break disconnecting switch for electric railway according to claim 1, wherein a visible double break is formed between the moving contact and the static contact (8) in the isolated state.
5. The kind of electrified railway double-break disconnecting switch according to claim 2, characterized in that the supporting copper bars (4), the connecting copper bars (6), the tension spring type flat contacts (7) and the static contacts (8) are made of red copper with silver-plated surface.