CN219892103U

CN219892103U - Contact net isolator

Info

Publication number: CN219892103U
Application number: CN202321387769.4U
Authority: CN
Inventors: 张宗鹏; 王琰; 郭海峰
Original assignee: Beijing Up Energy Electric Co ltd
Current assignee: Beijing Up Energy Electric Co ltd
Priority date: 2023-06-02
Filing date: 2023-06-02
Publication date: 2023-10-24
Anticipated expiration: 2033-06-02

Abstract

The utility model relates to the technical field of circuit switching equipment, in particular to a contact net isolating switch, which comprises a base, wherein a fixed insulator and a movable insulator are arranged on the base, one end of the movable insulator is hinged with the base, a movable knife switch is arranged at the top end of the movable insulator, a fixed knife switch is arranged at the top of the fixed insulator, a fixed knife switch protective cover is arranged at the outer side of the fixed knife switch, a movable knife switch protective cover is arranged at the outer side of the movable knife switch, the movable knife switch comprises a fixed plate, two knife switch plates are arranged on the fixed plate, the two knife switch plates are connected through a clamping bolt, and a spring is arranged at one end of the clamping bolt, which is close to the outer side of the knife switch plate. In the contact net isolating switch, a single swing arm structure is adopted, and a high-strength umbrella-type composite insulator is used as a transmission structure for replacing an overlong copper bar disconnecting link with an lengthened swing arm; meanwhile, means such as a high-strength stainless steel spring locking brake tool holder and the like are designed to improve and solve the defects and problem hidden trouble of most isolating switches.

Description

Contact net isolator

Technical Field

The utility model relates to the technical field of circuit switching equipment, in particular to a contact net isolating switch.

Background

The isolating switch is a switching device mainly used for isolating a power supply, switching operation and connecting and disconnecting a circuit. When the contacts are separated, an insulation distance meeting the specified requirements and an obvious disconnection mark are arranged between the contacts; and when the switching device is in the closed position, the switching device can bear the current under the normal loop condition and the current under the abnormal condition within the set time. The method has high reliability requirements, and plays a vital role in the design, establishment and safe operation of power substations and power plants.

The prior isolating switch in China has the defects of incomplete switching on/off, poor contact, easy breakage of a porcelain insulator, poor structure sealing of a transmission link, easy corrosion and rust and the like caused by poor transmission, and due to the structural defect, the rotary transmission position is required to bear very large radial load, simultaneously is required to bear a small axial direction or is required to carry out transmission through multi-point rotary movement, meanwhile, the transmission efficiency is reduced due to multi-point transmission, the main reasons for the conditions of incomplete switching on/off, easy damage and the like caused by the prior separation are caused, and in addition, due to the reasons of the action mode of a moving contact, the insulation distance and the like of the prior switch, the moving contact is determined, and the moving contact must be used as a moving contact to realize switching on/off, so that excessive waste of resources occupation of the copper bar is generated, and the existence of excessive and easy deformation of the copper bar is caused.

Disclosure of Invention

The utility model aims to provide a contact net isolating switch, which solves the problems of insufficient switching on/off, poor contact, easy breakage of a porcelain insulator, poor sealing of a transmission link structure, easy corrosion, rust and the like of the conventional domestic isolating switch in the background art.

In order to achieve the above purpose, the utility model provides a contact net isolating switch, which comprises a base, wherein a fixed insulator and a movable insulator are arranged on the base, one end of the movable insulator is hinged with the base, a movable knife switch is arranged at the top end of the movable insulator, a fixed knife switch is arranged at the top of the fixed insulator, a fixed knife switch protective cover is arranged at the outer side of the fixed knife switch, a movable knife switch protective cover is arranged at the outer side of the movable knife switch, the movable knife switch comprises a fixed plate, two knife switch plates are arranged on the fixed plate, the two knife switch plates are connected through a clamping bolt, and a spring is arranged at one end of the clamping bolt, which is close to the outer side of the knife switch plate.

Preferably, the bottom end of the fixed insulator is fixed on the base through a bolt.

Preferably, the locking bolt assembly is installed on one side of the bottom end of the movable insulator, the locking bolt assembly comprises a mounting plate, one end of the mounting plate is fixed on the movable switch blade, a bolt is fixed on the mounting plate, and one end of the bolt can be screwed into a threaded hole in the base when the movable switch blade is vertically arranged.

Preferably, a handle is arranged on the other side of the bottom end of the movable insulator.

Preferably, one end of the blade plate is fixed to the fixing plate by a bolt.

Preferably, a nut is mounted at one end of the clamping bolt far away from the spring, one end of the spring is fixed at the end head of the clamping bolt, and the other end of the spring is abutted against the outer side of the knife switch plate.

Preferably, one end of the knife switch plate far away from the fixed plate is provided with a knife switch edge with an arc-shaped structure.

Compared with the prior art, the utility model has the beneficial effects that:

1. in the contact net isolating switch, a single swing arm structure is adopted, and a high-strength umbrella-type composite insulator is used as a transmission structure for replacing an overlong copper bar disconnecting link with an lengthened swing arm; meanwhile, means such as a high-strength stainless steel spring locking brake tool holder are designed to improve and solve the defects and problem hidden dangers of most isolating switches, and the defects such as poor contact caused by ageing of reliability, structural strength and brake blade clamping force are greatly improved.

2. In the contact net isolating switch, the simple transmission is adopted, the operation force arm of the insulator is swung, excessive rotary opening and closing and the like are prevented from being used, the structural characteristics of overlong copper bars are adopted, and the problems of resource waste caused by overlong copper bars are effectively reduced, and the overlong copper bars are easy to deform and the like.

Drawings

FIG. 1 is a schematic diagram of a closing structure of the present utility model;

FIG. 2 is a schematic diagram of the opening structure of the present utility model;

fig. 3 is a schematic structural view of the movable blade according to the present utility model.

The meaning of each reference sign in the figure is:

1. a base; 2. fixing the insulator; 21. fixing the knife switch; 3. a movable insulator; 31. a movable knife switch; 311. a fixing plate; 312. a knife switch plate; 313. a gate knife edge; 314. clamping bolts; 315. a spring; 32. a handle; 33. a lock bolt assembly; 4. fixing a knife switch protective cover; 5. a movable knife protective cover.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a contact net isolating switch, as shown in figures 1-3, which comprises a base 1, wherein a fixed insulator 2 and a movable insulator 3 are arranged on the base 1, one end of the movable insulator 3 is hinged with the base 1, a movable knife switch 31 is arranged at the top end of the movable insulator 3, a fixed knife switch 21 is arranged at the top of the fixed insulator 2, the movable insulator 3 with a single swing arm swings left and right with the movable knife switch 31 to realize the action of the switch, so that the sufficient port spacing after opening is realized, the length, the consumption and the like of a copper bar are effectively reduced, and the risks of easy deformation and the like of the overlong copper bar are avoided;

the fixed knife protection cover 4 is installed in the outside of fixed knife 21, and movable knife protection cover 5 is installed in the outside of movable knife 31, and the increase of knife part protection cover has effectually reduced the invasion of environment such as precipitation, foreign matter to the knife, has provided better protection and greatly reduced the fault risk for the knife divide-shut brake.

In this embodiment, movable knife 31 includes fixed plate 311, installs two knife boards 312 on the fixed plate 311, connects through clamping bolt 314 between the knife boards 312, and spring 315 is installed near the outside of knife board 312 to clamping bolt 314's one end, and knife clamp part adopts high strength, and major diameter compression spring 315 can adjust the clamping force of knife board 312 and keep sufficient clamping force for a long time, greatly reduced contact failure and the closing in the birth period cause permanent deformation to the copper bar to reduce fault risks such as knife contact pressure.

In this embodiment, the bottom of the fixed insulator 2 is fixed on the base 1 through a bolt, so that the fixed insulator 2 is convenient to install.

Specifically, the locking bolt assembly 33 is installed to bottom one side of the movable insulator 3, and the locking bolt assembly 33 includes the mounting panel, and the one end of mounting panel is fixed on the movable knife 31, is fixed with the bolt on the mounting panel, and when the vertical setting of movable knife 31, screw hole on the base 1 can be screwed in to bolt one end, is convenient for lock fixed with the movable insulator 3 after the combined floodgate.

Further, a handle 32 is installed on the other side of the bottom end of the movable insulator 3, so that the opening and closing actions can be performed manually, and the handle 32 is made of insulating materials.

Further, one end of the blade plate 312 is fixed to the fixing plate 311 by bolts, so that the blade plate 312 is conveniently installed and fixed.

Further, the clamping bolt 314 is far away from one end of the spring 315 and is provided with a nut, one end of the spring 315 is fixed at the end of the clamping bolt 314, the other end of the spring 315 is abutted against the outer side of the knife switch plate 312, the spring 315 is driven to compress by screwing the nut, and then the spring 315 generates elastic force to compress the two knife switch plates 312 and adjust clamping force.

Further, a gate knife edge 313 with an arc structure is arranged at one end of the knife blade 312 far away from the fixed plate 311, so that the fixed contact on the fixed knife blade 21 can be clamped conveniently during closing.

When the contact net isolating switch is used, the device is assembled at first, when the switch is required to be closed, the movable insulator 3 is driven to swing by manually holding the handle 32, so that the movable knife 31 is in vertical state and is in contact with the fixed knife 21, the fixed contact on the fixed knife 21 is clamped through the knife edge 313 of the knife end of the knife plate 312 of the movable knife 31, the switch-on operation is realized, after the switch-on operation, one end of a bolt of the locking bolt assembly 33 can be screwed into a threaded hole on the base 1, the movable insulator 3 is conveniently locked and fixed after the switch-on operation, and when the switch-off operation is required, the bolt of the locking bolt assembly 33 is firstly loosened, and then the movable insulator 3 is driven to swing by manually holding the handle 32, so that the movable knife 31 is separated from the fixed knife 21, and the quick switch-off operation can be realized.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a contact net isolator, includes base (1), its characterized in that: install fixed insulator (2) and movable insulator (3) on base (1), the one end and the base (1) of movable insulator (3) are articulated, movable knife (31) are installed on the top of movable insulator (3), fixed knife (21) are installed at the top of fixed insulator (2), fixed knife protection casing (4) are installed in the outside of fixed knife (21), movable knife protection casing (5) are installed in the outside of movable knife (31), movable knife (31) include fixed plate (311), install two knife boards (312) on fixed plate (311), be connected through clamping bolt (314) between knife board (312), spring (315) are installed in the outside that one end of clamping bolt (314) is close to knife board (312).

2. The overhead line isolating switch according to claim 1, wherein: the bottom end of the fixed insulator (2) is fixed on the base (1) through bolts.

3. The overhead line isolating switch according to claim 1, wherein: the locking bolt assembly (33) is installed on one side of the bottom end of the movable insulator (3), the locking bolt assembly (33) comprises a mounting plate, one end of the mounting plate is fixed on the movable switch blade (31), a bolt is fixed on the mounting plate, and one end of the bolt can be screwed into a threaded hole in the base (1) when the movable switch blade (31) is vertically arranged.

4. The overhead line isolating switch according to claim 1, wherein: a handle (32) is arranged on the other side of the bottom end of the movable insulator (3).

5. The overhead line isolating switch according to claim 1, wherein: one end of the knife switch plate (312) is fixed on the fixed plate (311) through bolts.

6. The overhead line isolating switch according to claim 1, wherein: the clamping bolt (314) is far away from one end of the spring (315) and is provided with a nut, one end of the spring (315) is fixed at the end head of the clamping bolt (314), and the other end of the spring is abutted to the outer side of the knife switch plate (312).

7. The overhead line isolating switch according to claim 1, wherein: one end of the knife blade plate (312) far away from the fixed plate (311) is provided with a knife blade (313) with an arc-shaped structure.