Isolating switch

Abstract

The utility model discloses an isolating switch, which comprises an isolating front mounting plate, a grounding component assembly, an isolating insulating beam assembly, an isolating insulating main shaft assembly and an isolating rear mounting plate, and is characterized in that the grounding component assembly comprises a grounding beam, a grounding busbar, a grounding static contact, a grounding knife cushion and a grounding knife cushion base plate; the isolation insulation main shaft assembly comprises an isolation front hexagonal shaft, an isolation knife right fixing plate, an isolation clamping plate supporting column, an isolation knife left fixing plate, an isolation moving knife, a sleeve, an insulation limiting pin shaft, an isolation rear shaft, a locking nut, a screw and a belleville spring. The grounding knife-switch buffer pad can effectively reduce the deformation of the grounding static contact. The utility model has the advantages of simple structure, stable and reliable performance and low cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breaker isolating switches, and in particular relates to an isolating switch. Background Art

[0002] Currently, ring main units are widely used in the electrical industry, and are equipped with isolating switches. The isolating switches on the market have complex structures and high costs, and are difficult to meet the requirements of cost control.

[0003] Therefore, how to overcome the above problems is a problem that needs to be solved urgently by technical personnel. Summary of the invention

[0004] The utility model aims to provide an isolating switch with simple structure, low cost, safety and reliability.

[0005] The utility model achieves this purpose through the following technical solutions:

[0006] A disconnect switch comprises: a grounding component assembly, an isolation insulating beam assembly, an isolation insulating main shaft assembly, an isolation front mounting plate and an isolation rear mounting plate.

[0007] A grounding component assembly, including a grounding beam, a grounding busbar, a grounding static contact, a grounding knife buffer pad and a grounding knife buffer pad plate, wherein the grounding busbar is fixed on the grounding beam, the grounding static contact is fixed on the grounding busbar, the grounding knife buffer pad is fixed on the grounding static contact, and the grounding knife buffer pad plate is fixed on the grounding busbar.

[0008] The isolating insulating beam assembly comprises an isolating insulating beam, an isolating stationary contact, a front fixing bracket of the stationary contact and a rear fixing bracket of the stationary contact. The isolating stationary contact is fixed on the isolating insulating beam by the front fixing bracket of the stationary contact and the rear fixing bracket of the stationary contact.

[0009] An isolated insulating spindle assembly, comprising an isolated front hexagonal shaft, an isolated knife right fixed plate, an isolated splint support column, an isolated knife left fixed plate, an isolated movable knife, a sleeve, an insulating limit pin and an isolated rear shaft, wherein the isolated knife right fixed plate and the isolated knife left fixed plate are supported by the isolated splint support column, the isolated front hexagonal shaft and the isolated rear shaft are fixed between the isolated knife right fixed plate and the isolated knife left fixed plate, the sleeve is supported between the blades of the isolated movable knife, and the insulating limit pin is fixed between the isolated knife right fixed plate and the isolated knife left fixed plate.

[0010] The isolation front mounting plate and the isolation rear mounting plate are fixed on the circuit breaker above the isolation switch, the isolation insulating beam is fixed between the isolation front mounting plate and the isolation rear mounting plate, the grounding beam is fixed between the isolation front mounting plate and the isolation rear mounting plate, the isolation rear shaft is connected to the isolation rear mounting plate, and the isolation movable knife and the isolation static contact are connected and matched with the concave and convex surface of the ball socket to ensure that the rotation is not stuck.

[0011] By rotating the front hexagonal shaft of the isolation, the isolation movable knife is driven to rotate, so as to realize the abutment and cooperation between the isolation movable knife and the grounding static contact, that is, grounding; the isolation movable knife is not abutted and cooperated with any party, that is, isolation and opening; the isolation movable knife is abutted and cooperated with the output terminal of the circuit breaker, that is, isolation and closing (at this time, the output terminal of the circuit breaker is connected with the isolation static contact through the isolation movable knife).

[0012] Beneficial effects of the utility model:

[0013] It can be seen from the technical solution provided by the utility model that the isolating switch provided by the utility model has a simple and compact structure, is safe and reliable, and has a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A front view of the isolating switch provided in the embodiment of the utility model (with upper circuit breaker);

[0015] Figure 2 A three-dimensional diagram of the isolating switch provided in the embodiment of the utility model;

[0016] Figure 3 A front view of a grounding assembly provided in an embodiment of the utility model;

[0017] Figure 4 A three-dimensional diagram of a grounding assembly provided in an embodiment of the utility model;

[0018] Figure 5 A cross-sectional view of an isolation insulating beam assembly provided by an embodiment of the utility model;

[0019] Figure 6 A three-dimensional diagram of an isolated insulating beam assembly provided by an embodiment of the utility model;

[0020] Figure 7 A cross-sectional view of an isolated insulating spindle assembly provided in an embodiment of the utility model;

[0021] Figure 8 A three-dimensional diagram of an isolated insulating spindle assembly provided by an embodiment of the utility model;

[0022] Fig. 9 A three-dimensional diagram of the disconnector in the closed position (with the upper circuit breaker) provided in the embodiment of the utility model;

[0023] Fig.10 A three-dimensional diagram of the disconnect switch opening position provided by an embodiment of the utility model (with a circuit breaker above);

[0024] Fig.11 A three-dimensional diagram of the connection position of the isolating switch provided in an embodiment of the utility model (with an upper circuit breaker).

[0025] In the figure:

[0026] 1. Circuit breaker; 2. Isolation front mounting plate; 3. Grounding component assembly; 4. Isolation insulation beam assembly; 5. Isolation insulation main shaft assembly; 6. Isolation rear mounting plate; 301. Grounding beam; 302. Grounding busbar; 303. Grounding static contact; 304. Grounding knife buffer pad; 305. Grounding knife buffer pad plate; 401. Isolation insulation beam; 402. Isolation static contact; 403. Static contact front fixing bracket; 404. Static contact rear fixing bracket; 501. Isolation front hexagonal shaft; 502. Isolation knife right fixing plate; 503. Isolation splint support column; 504. Isolation knife left fixing plate; 505. Isolation moving knife; 506. Sleeve; 507. Insulation limit pin shaft; 508. Isolation rear shaft; 509. Locking nut; 510. Screw; 511. Butterfly spring; 4021. Isolation static contact ball socket concave surface; 5051. Isolation moving knife ball socket convex surface. DETAILED DESCRIPTION

[0027] The embodiments of the present invention will be described in further detail below. The contents not described in detail in the embodiments of the present invention belong to the prior art known to professional and technical personnel in the field.

[0028] Combination Figure 1 and Figure 2 , Figure 1 This is the main view of the isolating switch (with upper circuit breaker) in the embodiment. Figure 2 It is a three-dimensional diagram of the isolating switch in the embodiment. The isolating switch in this embodiment includes: an isolation front mounting plate 2, a grounding component assembly 3, an isolation insulating beam assembly 4, an isolation insulating main shaft assembly 5 and an isolation rear mounting plate 6.

[0029] The isolation front mounting plate 2 and the isolation rear mounting plate 6 are respectively fixed to the front end and the rear end of the circuit breaker 1 by bolt connection.

[0030] Combination Figure 2 and Figure 3The grounding component assembly 3 is fixed to the isolation front mounting plate 2 and the isolation rear mounting plate 6 by bolts at both ends of the grounding beam 301, the grounding busbar 302 is attached to the surface of the grounding beam 301, and the grounding static contact 303 is attached to the surface of the grounding busbar 302. The bolts pass through the through holes of the grounding beam 301 and the grounding busbar 302 and cooperate with the internal threaded holes of the grounding static contact 303 to achieve fixation. The grounding knife buffer pad 304 and the grounding knife buffer pad plate 305 are sleeved on the grounding static contact 303, and the fixed surface of the grounding knife buffer pad plate 305 is attached to the surface of the grounding busbar 302. The grounding knife buffer pad plate 305 and the grounding busbar 302 are fixed to the grounding beam 301 with common bolts, and the grounding knife buffer pad plate 305 presses the grounding knife buffer pad 304 onto the grounding static contact 303.

[0031] The material of the grounding static contact 303 is copper, and the material of the grounding knife buffer pad 304 is a polyurethane board, which can effectively reduce the deformation of the grounding static contact 303 caused by operation.

[0032] Combination Figure 2 and Figure 5 The isolation insulating beam assembly 4 is fixed to the isolation front mounting plate 2 and the isolation rear mounting plate 6 by bolts at the front and rear ends of the isolation insulating beam 401, the front fixed bracket 403 of the static contact and the rear fixed bracket 404 of the static contact are respectively fixed to the isolation insulating beam 401 by bolts, and the isolation static contact 402 is clamped between the front fixed bracket 403 of the static contact and the rear fixed bracket 404 of the static contact, and the three are connected by bolts to achieve reliable positioning of the isolation static contact 402.

[0033] Combination Figure 7 and Figure 8 The right fixed plate 502 of the isolation knife and the left fixed plate 504 of the isolation knife are connected and fixed with bolts, and the isolation splint support column 503 is used to support them. The front hexagonal shaft 501 of the isolation knife and the rear shaft 508 of the isolation knife are installed between the right fixed plate 502 of the isolation knife and the left fixed plate 504 of the isolation knife, the front hexagonal shaft 501 of the isolation knife is at the front end, and the rear shaft 508 of the isolation knife is at the rear end. The movable isolation knife 505 is installed between the right fixed plate 502 of the isolation knife and the left fixed plate 504 of the isolation knife, and the rotation of the movable isolation knife 505 is limited by the insulating limit pin 507.

[0034] Combination Figure 2 and Figure 7 The isolation insulating spindle assembly 5 has three groups of isolation moving knives 505. The two blades at the upper end of the isolation moving knife 505 are supported by a sleeve 506 and connected and fixed with a screw 510, a butterfly spring 511 and a locking nut 509. The isolation moving knife ball socket convex surface 5051 at the lower end of the isolation moving knife 505 is connected to the isolation static contact ball socket concave surface 4021 by a screw 510, a butterfly spring 511 and a locking nut 509 to ensure the rotation of the isolation moving knife 505 relative to the isolation static contact 402.

[0035] By guiding the isolation rear shaft 508, the isolation movable knife 505 is connected to the isolation static contact 402, ensuring that the isolation front hexagonal shaft 501 is coaxial with the operating hole of the isolation front mounting plate 2.

[0036] During specific operation: the rotation of the operating lever drives the isolating front hexagonal shaft 501 to rotate, and the isolating front hexagonal shaft 501 drives the isolating insulating main shaft assembly 5 to rotate. When the isolating closing operation is performed, the isolating front hexagonal shaft 501 rotates clockwise, and the isolating movable blade 505 abuts against the outlet end of the circuit breaker. The outlet end of the circuit breaker is connected to the isolating static contact 402 through the isolating movable blade 505, that is, the closing operation is performed. Fig. 9 When the isolating switch is operated, the isolating front hexagonal shaft 501 rotates counterclockwise, the isolating movable blade 505 is separated from the circuit breaker outlet, and the circuit breaker outlet is not connected to the isolating static contact 402, that is, the switch is opened. Fig.10 When the grounding operation is performed, the front hexagonal shaft 501 rotates counterclockwise, the isolating movable blade 505 abuts against the grounding static contact 303, and the grounding static contact 303 is connected to the isolating movable blade 505 and the isolating static contact 402, that is, the grounding is as follows Fig.11 .

[0037] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An isolating switch, characterized in that: The invention comprises an isolation front mounting plate (2), a grounding component assembly (3), an isolation insulating beam assembly (4), an isolation insulating main shaft assembly (5) and an isolation rear mounting plate (6); the grounding component assembly (3), the isolation insulating beam assembly (4) and the isolation insulating main shaft assembly (5) are respectively connected to the isolation front mounting plate (2) and the isolation rear mounting plate (6); and the isolation front mounting plate (2) and the isolation rear mounting plate (6) are respectively connected to the front and rear ends of the circuit breaker.

2. The isolating switch according to claim 1, characterized in that: The grounding component assembly (3) comprises a grounding beam (301), a grounding busbar (302), a grounding static contact (303), a grounding knife buffer pad (304) and a grounding knife buffer pad pad plate (305); two ends of the grounding beam (301) are respectively connected to the isolation front mounting plate (2) and the isolation rear mounting plate (6); the grounding busbar (302) is mounted on the grounding beam (301); the grounding static contact (303) is mounted on the grounding busbar (302); the grounding knife buffer pad (304) is mounted on the grounding static contact (303); the grounding knife buffer pad pad plate (305) is mounted on the grounding knife buffer pad (304); and the grounding knife buffer pad (304) can effectively reduce the deformation of the grounding static contact (303) caused by operation.

3. The isolating switch according to claim 1, characterized in that: The isolating insulating beam assembly (4) comprises an isolating insulating beam (401), an isolating stationary contact (402), a front fixing bracket (403) of the stationary contact and a rear fixing bracket (404) of the stationary contact. The front and rear ends of the isolating insulating beam (401) are respectively connected to the isolating front mounting plate (2) and the isolating rear mounting plate (6). The front fixing bracket (403) of the stationary contact and the rear fixing bracket (404) of the stationary contact fix the isolating stationary contact (402) on the isolating insulating beam (401).

4. The isolating switch according to claim 3, characterized in that: The isolation insulating spindle assembly (5) comprises an isolation front hexagonal shaft (501), an isolation knife right fixed plate (502), an isolation splint support column (503), an isolation knife left fixed plate (504), an isolation movable knife (505), a sleeve (506), an insulation limit pin shaft (507), an isolation rear shaft (508), a locking nut (509), a screw (510) and a butterfly spring (511), wherein the isolation front hexagonal shaft (501), the isolation splint support column (503), the isolation movable knife (505), the sleeve (506), the insulation limit pin shaft (507) and the The isolation rear shaft (508) is arranged between the isolation knife right fixed plate (502) and the isolation knife left fixed plate (504); the isolation movable knife ball socket convex surface (5051) at the lower end of the isolation movable knife (505) and the isolation static contact ball socket concave surface (4021) at the upper end of the isolation static contact (402) are connected by the locking nut (509), the screw (510) and the butterfly spring (511); the isolation rear shaft (508) cooperates with the hole of the isolation rear mounting plate (6); the isolation front hexagonal shaft (501) is coaxial with the hole of the isolation front mounting plate (2).

5. A disconnector according to claim 4, characterized in that: When the isolation front hexagonal shaft (501) rotates clockwise, the isolation movable knife (505) is connected to the circuit breaker outlet terminal to achieve an isolation closed state; when the isolation front hexagonal shaft (501) rotates counterclockwise, the isolation movable knife (505) is separated from the circuit breaker outlet terminal to achieve an isolation open state; when the isolation front hexagonal shaft (501) continues to rotate counterclockwise, the isolation movable knife (505) is connected to the grounding static contact (303) to achieve a grounding state.

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