CN213093118U

CN213093118U - High-voltage isolating switch

Info

Publication number: CN213093118U
Application number: CN202022597291.0U
Authority: CN
Inventors: 卢俊峰; 于继忱; 王晓利; 于英平
Original assignee: Liaoning Hualong Electric Technology Inc Co
Current assignee: Liaoning Hualong Electric Technology Inc Co
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-04-30
Anticipated expiration: 2030-11-11

Abstract

The utility model discloses a high voltage isolator, include: the device comprises a base, a first insulator, a second insulator, an incoming line contact, an outgoing line contact, a knife switch, a self-locking latch hook and a locking fixing piece; one end of the switch blade is connected with the support in a switching way, the self-locking latch hook is arranged at the free end of the switch blade and is provided with a hook body and an arc-shaped through groove, and the middle parts of the two blades are connected through a first rotating shaft penetrating through the arc-shaped through groove; a first separating sleeve is arranged on one side of the self-locking latch hook, a second separating sleeve is arranged on the blade, the first separating sleeve and the second separating sleeve are sleeved on a second rotating shaft connecting the two blades, and the first rotating shaft is connected with the second rotating shaft through a torsion spring; the end surfaces of the first separating sleeve and the second separating sleeve are provided with spiral grooves which are matched with each other, and when the two ends of the switch knife clamp the incoming line contact and the outgoing line contact, the hook body is hooked at the end part of the locking fixing piece; the self-locking latch hook is rotated, the first separating sleeve and the second separating sleeve are mutually extruded, so that the switch knife is separated from the incoming line contact and the outgoing line contact, and the hook body is separated from the locking fixing piece.

Description

High-voltage isolating switch

Technical Field

The utility model belongs to the technical field of isolator, a high voltage isolator is related to.

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 high-voltage isolating switch plays a role in isolating voltage while ensuring the safety of the high-voltage electric appliance and the device during maintenance work. The high-voltage isolating switch has a simple working principle and structure, but has high working reliability due to large usage amount, and has great influence on the design, establishment and safe operation of a power plant and a transformer substation. After the existing high-voltage isolating switch is switched on, a knife switch is easy to open, so that the problem of power failure is caused, and the consequence caused by one-time accidental power failure is very serious; meanwhile, the problem that a knife switch and a contact are mutually abraded when the existing high-voltage isolating switch is opened and closed is solved, so that the stability of the high-voltage isolating switch after closing is ensured, the abrasion of the isolating switch is reduced, and the problem to be solved is solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-voltage isolating switch through setting up the auto-lock latch hook, can prevent that the plug-in strip accident from opening and causing the outage, through setting up the wearing and tearing of the interval of the two blades that expand when separating brake, combined floodgate of separation cover in order to prevent plug-in strip and contact.

The utility model discloses a high voltage isolator, include: the device comprises a base, a first insulator, a second insulator, an incoming line contact, an outgoing line contact, a knife switch, a self-locking latch hook and a locking fixing piece; the first insulator and the second insulator are arranged on the base, the incoming line contact is arranged on the first insulator, the outgoing line contact is arranged on the second insulator, the locking fixing piece is arranged between the first insulator and the incoming line contact, and the outgoing line contact is provided with a support;

the knife switch comprises two blades, two ends of each blade are connected through a first stud and a second stud, and the tail ends of the first stud and the second stud are respectively sleeved with a pressure spring; one end of the switch blade is rotatably connected with the support through a first stud, the self-locking latch hook is arranged at the free end of the switch blade and is positioned between the two blades, a hook body is arranged at the bottom end of the self-locking latch hook, an arc-shaped through groove is formed in the self-locking latch hook, the middle parts of the two blades are connected through a first rotating shaft, and the first rotating shaft penetrates through the arc-shaped through groove; a first separation sleeve is fixed on one side of the self-locking latch hook, a second separation sleeve is fixed on the blade on the side opposite to the first separation sleeve, the first separation sleeve and the second separation sleeve are sleeved on a second rotating shaft connecting the two blades, and the first rotating shaft is connected with the second rotating shaft through a torsion spring; the end surfaces of the first separating sleeve and the second separating sleeve are respectively provided with spiral grooves which are matched with each other, and when the two ends of the two blades clamp the incoming line contact and the outgoing line contact, the hook body is hooked at the end part of the locking fixing piece; and the self-locking latch hook is rotated, the first separating sleeve and the second separating sleeve are mutually extruded, so that the two blades are separated from the incoming line contact and the outgoing line contact, and the hook body is separated from the locking fixing piece.

In the high-voltage isolating switch of the utility model, the first rotating shaft is also sleeved with a first spacer bush and a second spacer bush which are respectively positioned at two sides of the self-locking latch hook; and a third spacer bush is sleeved on the second rotating shaft and is positioned on the other side of the self-locking latch hook.

The utility model discloses a in the high pressure isolator, first pivot and second pivot are through two torsional spring connections, and two torsional springs are located auto-lock latch hook both sides respectively.

The utility model discloses a in the high voltage isolator, auto-lock latch hook top is equipped with the pull ring, the pull ring is connected with insulating pull rod.

The utility model discloses a high voltage isolator through setting up the auto-lock latch hook, can prevent that the unexpected problem that causes the outage of opening of plug-in strip, extrudes the interval increase that makes two blades each other when separating brake, closing a floodgate through setting up first separation sleeve and second separation sleeve, and then can prevent the problem of mutual wearing and tearing of plug-in strip and contact. The high-voltage isolating switch is simple in structure, convenient to operate and suitable for popularization and application.

Drawings

Fig. 1 is a schematic structural diagram of a high-voltage isolating switch of the present invention;

fig. 2 is a closing front view of the high-voltage isolating switch of the present invention;

fig. 3 is a closing top view of the high-voltage isolating switch of the present invention;

FIG. 4 is a schematic view of the assembly of the first and second split sleeves of the self-latching shackle;

in the figure: 1-base, 2-first insulator, 3-second insulator, 4-incoming line contact, 5-outgoing line contact, 6-locking fixing piece, 7-self-locking latch hook, 8-knife, 9-support, 10-second rotating shaft, 11-first stud, 12-second stud, 13-first rotating shaft, 14-pressure spring, 15-first separation sleeve, 16-second separation sleeve, 17-first separation sleeve, 18-second separation sleeve, 19-third separation sleeve, 20-torsion spring, 71-hook body, 72-arc through groove and 73-pull ring.

Detailed Description

As shown in fig. 1 and fig. 2, the high voltage isolation switch of the present invention includes: the cable-connecting device comprises a base 1, a first insulator 2, a second insulator 3, a cable-inlet contact 4, a cable-outlet contact 5, a knife switch 8, a self-locking latch hook 7 and a locking fixing piece 6. First insulator 2 and second insulator 3 are installed on base 1, inlet wire contact 4 is installed on first insulator 2, and outlet wire contact 4 is installed on second insulator 3, locking stationary blade 6 is installed between first insulator 2 and inlet wire contact 4, be equipped with support 9 on the outlet wire contact 5.

The knife switch 8 comprises two blades, two ends of the two blades are connected through a first stud 11 and a second stud 12, and the tail ends of the first stud 11 and the second stud 12 are respectively sleeved with a pressure spring 14. One end of the switch blade 8 is rotatably connected with the support 9 through a first stud 11, and the self-locking latch hook 7 is arranged at the free end of the switch blade 8 and is positioned between the two blades.

As shown in fig. 4, a hook body 71 is arranged at the bottom end of the self-locking latch hook 7, an arc-shaped through groove 72 is arranged on the self-locking latch hook, a pull ring 73 is arranged at the top of the self-locking latch hook, the pull ring 73 is connected with the insulating pull rod, and the self-locking latch hook is driven to rotate by manually pulling the insulating pull rod, so that opening and closing are realized. The middle parts of the two blades are connected through a first rotating shaft 13, and the first rotating shaft 13 penetrates through the arc-shaped through groove 72. A first separation sleeve 15 is fixed on the self-locking latch hook 7, a second separation sleeve 16 is fixed on the blade on the side opposite to the first separation sleeve 15, the first separation sleeve 15 and the second separation sleeve 16 are both sleeved on a second rotating shaft 10 connecting the two blades, and the first rotating shaft 13 is connected with the second rotating shaft 10 through a torsion spring 20. The end surfaces of the first separating sleeve 15 and the second separating sleeve 16 are respectively provided with spiral grooves matched with each other, and when the two ends of the two blades clamp the incoming line contact 4 and the outgoing line contact 5, the hook body 71 is hooked at the end part of the locking fixing piece 6. The self-locking latch hook 7 is rotated, the first separating sleeve 15 and the second separating sleeve 16 are mutually extruded, so that the two blades are separated from the incoming line contact 4 and the outgoing line contact 5, the hook body 71 is separated from the locking fixing piece 6, and the brake separating is realized.

As shown in fig. 3, the first rotating shaft 13 is further sleeved with a first spacer 17 and a second spacer 18, and the first spacer 17 and the second spacer 18 are respectively located at two sides of the self-locking latch hook 7. The first spacer 17 and the second spacer 18 are added on two sides of the locking hook 7 to ensure that the locking hook 7 is stably installed in the opening state. The total thickness of the first spacer 17, the second spacer 18 and the self-locking latch hook 7 is less than the width of the incoming line contact 4 and the outgoing line contact 5. And a third spacer 19 is sleeved on the second rotating shaft 10, and the third spacer 19 is positioned on the other side of the self-locking latch hook 7. In specific implementation, the first rotating shaft 13 and the second rotating shaft 10 are connected through two torsion springs 20, and the two torsion springs 20 are respectively located at two sides of the self-locking latch hook 7.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the spirit of the present invention, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. High voltage isolator, its characterized in that includes: the device comprises a base, a first insulator, a second insulator, an incoming line contact, an outgoing line contact, a knife switch, a self-locking latch hook and a locking fixing piece; the first insulator and the second insulator are arranged on the base, the incoming line contact is arranged on the first insulator, the outgoing line contact is arranged on the second insulator, the locking fixing piece is arranged between the first insulator and the incoming line contact, and the outgoing line contact is provided with a support;

2. The high-voltage isolating switch according to claim 1, wherein the first rotating shaft is further sleeved with a first spacer bush and a second spacer bush, and the first spacer bush and the second spacer bush are respectively positioned on two sides of the self-locking latch hook; and a third spacer bush is sleeved on the second rotating shaft and is positioned on the other side of the self-locking latch hook.

3. The high-voltage isolating switch according to claim 2, wherein the first rotating shaft and the second rotating shaft are connected through two torsion springs, and the two torsion springs are respectively located on two sides of the self-locking latch hook.

4. The high-voltage isolating switch according to claim 1, wherein a pull ring is arranged on the top of the self-locking latch hook, and the pull ring is connected with the insulating pull rod.