CN217902989U

CN217902989U - Contact device of knife-type isolating switch

Info

Publication number: CN217902989U
Application number: CN202221389809.4U
Authority: CN
Inventors: 薛文峰; 周保军; 蒋兵; 朱毓龙; 霍俊如; 唐媛媛
Original assignee: State Grid Yili Yihe Power Supply Co ltd; State Grid Corp of China SGCC
Current assignee: State Grid Yili Yihe Power Supply Co ltd; State Grid Corp of China SGCC
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-11-25
Anticipated expiration: 2032-06-06

Abstract

The utility model relates to an electric power fortune dimension technical field is a sword type isolator contact device, and it is in including fixed box, first connecting plate, second connecting plate, preceding finger, back contact finger and contact, fixed box is the box structure that the opening is right, and fixed box left side lower extreme fixed mounting has first connecting plate, and fixed box front side is equipped with at least one right-hand member from top to bottom in proper order and is located the preceding finger that touches on the fixed box right side, and the fixed box rear side that touches finger position before corresponding every all is equipped with the back that the right-hand member is located the fixed box right side and touches the finger. The utility model has reasonable and compact structure and convenient use, and leads the two isolating switches to be conducted by arranging the front contact finger, the rear contact finger and the contact; the front contact finger and the rear contact finger are fixedly connected through the bolt, so that the front contact finger and the rear contact finger can be conveniently disassembled; the contact area between the contact and the contact is increased by arranging a plurality of front contact fingers and rear contact fingers; the clamping force is adjusted by arranging the front compression spring and the rear compression spring, and the device has the characteristics of stability, reliability and easiness in installation.

Description

Contact device of knife-type isolating switch

Technical Field

The utility model relates to an electric power fortune dimension technical field is a sword type isolator contact device.

Background

The isolation switch is mainly used for isolating voltage, conducting current, switching small current, connecting or disconnecting a no-load bus and a low-voltage reactor in a no-load state, connecting or disconnecting a no-load line and switching a circuit in a power system. The circuit is disconnected by an isolating switch on a circuit without current to form an obvious fracture, and power failure equipment is isolated from a live part to form an obvious visible air insulation gap so as to ensure the safety of people and equipment; the circuit is conducted by the isolating switch on the circuit with current, and the stability of a power system is guaranteed.

The existing isolating switch has the following problems: (1) The contact is heated, according to incomplete statistics, the accumulated heat (serious or more) of the knife-type isolating switch is heated for 79 times from 2018 to 2021, the operation is stopped for 632 hours due to abnormal heat generation of the knife-type isolating switch, the electric quantity is lost for about 442.4 megawatt hours, and the economic loss is about 22.1 ten thousand yuan; (2) The knife-type disconnecting switch adopts a plug-in type switching principle, after long-time operation, a contact compression spring of the disconnecting switch loses elasticity after annealing, so that the disconnecting switch is heated, an overhaul worker can handle the heating of the disconnecting switch and adopts a method of screwing the contact compression spring, so that the switching is increasingly difficult, the outward stress (outward splayed stress) of the disconnecting switch is increased, a porcelain insulator of the disconnecting switch is easily broken, and the personal casualty risk is brought to the operating worker; (3) The existing old equipment has large stock, the existing quantity of the knife-type isolating switches is large, the reconstruction cost and the personnel bearing capacity limit, the reconstruction can not be completed in a short period, and the vicious circle of the defect snowball is easy to form.

Disclosure of Invention

The utility model provides a sword type isolator contact device has overcome above-mentioned prior art not enough, and it can effectively solve generating heat and the bite problem that current isolator contact exists.

The technical scheme of the utility model is realized through following measure: the utility model provides a sword type isolator contact device is including fixed box, first connecting plate, the second connecting plate, preceding touching indicates, after touch and indicate and the contact, fixed box is the box structure that the opening is right, fixed box left side lower extreme fixed mounting has first connecting plate, fixed box front side is equipped with at least one right-hand member from top to bottom in proper order and is located the preceding touching of fixed box right side and indicates, the fixed box rear side that corresponds every preceding touching and indicates the position all is equipped with the right-hand member and is located the back of fixed box right side and touches and indicate, preceding touching indicates that the right part and after touches to indicate between the right part that the contact that the lower extreme is located fixed box below, contact lower extreme right side fixed mounting has the second connecting plate.

The following are further optimization or/and improvement of the technical scheme of the utility model:

the front side of the fixed box can be sequentially provided with three front contact fingers with right ends positioned at the right side of the fixed box from top to bottom.

The front contact finger device further comprises a front arc plate, a rear arc plate, a compression bolt, a compression nut, a front compression spring and a rear compression spring, the right end of the front contact finger is fixedly provided with the front arc plate, the right end of the rear contact finger is fixedly provided with the rear arc plate, the right end of the rear contact finger is positioned behind the rear contact finger, the front contact finger corresponding to the position between the fixed box and the contact is provided with a front clamping hole which is communicated with the front and the rear, the rear contact finger corresponding to the position of the front clamping hole is provided with a rear clamping hole which is communicated with the front and the rear, the rear end of the compression bolt sequentially penetrates through the front clamping hole and the rear clamping hole and is positioned behind the rear contact finger, the rear end of the compression bolt is fixedly provided with the compression nut, the outer side of the compression bolt between the front end of the compression bolt and the front contact finger is provided with the front compression spring, and the outer side of the compression bolt between the compression nut and the rear contact finger is provided with the rear compression spring.

Two first fixing holes which are communicated up and down can be arranged on the first connecting plate at intervals in the front and back direction, and two second fixing holes which are communicated up and down are arranged on the second connecting plate at intervals in the front and back direction.

The front contact finger and the fixed box can be fixedly installed together through a bolt, and the rear contact finger and the fixed box are fixedly installed together through a bolt.

The utility model has reasonable and compact structure and convenient use, and leads the two isolating switches to be conducted by arranging the front contact finger, the rear contact finger and the contact; the front contact finger and the rear contact finger are fixedly connected through the bolt, so that the front contact finger and the rear contact finger can be conveniently disassembled; the contact area between the contact and the contact is increased by arranging a plurality of front contact fingers and rear contact fingers; the clamping force is adjusted by arranging the front compression spring and the rear compression spring, and the device has the characteristics of stability, reliability and easiness in installation.

Drawings

Fig. 1 is a schematic front view structure diagram of embodiments 1 to 5 of the present invention.

Fig. 2 is a schematic top view of the structure of fig. 1.

Fig. 3 is a schematic perspective view of fig. 1.

Fig. 4 is a schematic perspective view of a conventional isolating switch.

The codes in the figures are respectively: 1 is fixed box, 2 is first connecting plate, 3 is the second connecting plate, 4 are preceding to touch the finger, 5 are back to touch the finger, 6 are the contact, 7 are preceding arc plate, 8 are back arc plate, 9 are housing bolt, 10 are gland nut, 11 are preceding housing spring, 12 are back housing spring, 13 are left isolator, 14 are right isolator, 15 are the electrically conductive arm of rectangle.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.

The invention will be further described with reference to the following examples and drawings:

example 1: as shown in the accompanying

drawings

1, 2 and 3, the contact 6 device of the knife-type disconnecting switch comprises a fixed box 1, a first connecting plate 2, a second connecting plate 3, a front contact finger 4, a rear contact finger 5 and a contact 6, wherein the fixed box 1 is of a box structure with a right opening, the first connecting plate 2 is fixedly mounted at the lower end of the left side of the fixed box 1, at least one front contact finger 4 with the right end positioned at the right side of the fixed box 1 is sequentially arranged on the front side of the fixed box 1 from top to bottom, the rear contact finger 5 with the right end positioned at the right side of the fixed box 1 is arranged on the rear side of the fixed box 1 corresponding to the position of each front contact finger 4, the contact 6 with the lower end positioned below the fixed box 1 is clamped between the right part of the front contact finger 4 and the right part of the rear contact finger 5, and the second connecting plate 3 is fixedly mounted at the right side of the lower end of the contact 6. In the use, first connecting plate 2 passes through bolted connection fixed mounting in the electrically conductive arm 15 upside of the rectangle of left isolator 13, then passes through bolted connection fixed mounting in the electrically conductive arm 15 downside of the rectangle of right isolator 14 with second connecting plate 3 to make contact 6 be located between preceding contact finger 4 and the back contact finger 5 and contact with the two, thereby realize switching on of left isolator 13 and right isolator 14, avoid the present isolator (as show in description figure 4) switch on the mode exist generate heat and the jam problem appears.

The knife-type disconnecting switch contact 6 device can be further optimized or/and improved according to actual needs:

example 2: as shown in fig. 1, 2 and 3, the front side of the fixing box 1 is sequentially provided with three front contact fingers 4, the right ends of which are positioned at the right side of the fixing box 1, from top to bottom. In the use, through such setting, increase area of contact promotes the utility model discloses a stability.

Example 3: as shown in the accompanying

drawings

1, 2 and 3, the device further comprises a front arc plate 7, a rear arc plate 8, a compression bolt 9, a compression nut 10, a front compression spring 11 and a rear compression spring 12, wherein the right end of the front contact finger 4 is fixedly provided with the front arc plate 7, the right end of the front contact finger 4 is located in front of the front contact finger 4, the right end of the rear contact finger 5 is fixedly provided with the rear arc plate 8, the right end of the rear contact finger 5 is located behind the rear contact finger 5, a front clamping hole which is through from front to back is formed in the front contact finger 4 corresponding to the position between the fixed box 1 and the contact 6, a rear clamping hole which is through from front to back is formed in the rear contact finger 5 corresponding to the position of the front clamping hole, the rear end of the compression bolt 9 sequentially penetrates through the front clamping hole and the rear clamping hole and is located behind the rear contact finger 5, the rear end of the compression bolt 9 is fixedly provided with the compression nut 10, the outer side of the compression bolt 9 between the front end of the compression bolt 9 and the front contact finger 4 is provided with the front compression spring 11, and the outer side of the compression bolt 9 between the rear contact finger 5 is provided with the rear compression spring 12. In the use process, through the arrangement, the front contact finger 4 and the rear contact finger 5 can clamp the contact 6 conveniently, and the clamping force can be adjusted.

Example 4: as shown in fig. 1, 2 and 3, two first fixing holes penetrating up and down are formed in the first connecting plate 2 at intervals in the front-back direction, and two second fixing holes penetrating up and down are formed in the second connecting plate 3 at intervals in the front-back direction. In use, with this arrangement, the first and

second connector plates

2 and 3 are each mounted with the rectangular conductive arm 15 of the disconnector.

Example 5: as shown in fig. 1, 2 and 3, the front contact finger 4 is fixedly mounted with the fixing box 1 through a bolt, and the rear contact finger 5 is fixedly mounted with the fixing box 1 through a bolt. In the use, through like this detachable fixed mounting mode, not only be convenient for change, still be convenient for select the preceding contact finger 4 and the back contact finger 5 of different length according to actual demand.

Above technical feature constitutes the utility model discloses an embodiment, it has stronger adaptability and implements the effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.

Claims

1. The utility model provides a sword type isolator contact device, its characterized in that is including fixed box, first connecting plate, the second connecting plate, preceding finger, after touch and indicate and contact, fixed box is the box structure that the opening is right, fixed box left side lower extreme fixed mounting has first connecting plate, fixed box front side is equipped with at least one right-hand member from top to bottom in proper order and is located the preceding finger that touches in fixed box right side, the fixed box rear side that corresponds every preceding finger position all is equipped with the right-hand member and is located the back of fixed box right side and touches and indicate, preceding finger right part and after touch between the finger right part have the lower extreme be located the contact of fixed box below, contact lower extreme right side fixed mounting has the second connecting plate.

2. The blade type disconnecting switch contact device according to claim 1, wherein the front side of the fixed box is provided with three front contact fingers, the right ends of which are located at the right of the fixed box, in sequence from top to bottom.

3. The contact device of the knife-type disconnecting switch according to claim 1 or 2, further comprising a front arc plate, a rear arc plate, a pressing bolt, a pressing nut, a front pressing spring and a rear pressing spring, wherein the right end of the front contact finger is fixedly provided with the front arc plate, the right end of the front contact finger is positioned in front of the front contact finger, the right end of the rear contact finger is fixedly provided with the rear arc plate, the right end of the rear contact finger is positioned behind the rear contact finger, the front contact finger corresponding to the position between the fixed box and the contact is provided with a front clamping hole which is through from front to back, the rear contact finger corresponding to the position of the front clamping hole is provided with a rear clamping hole which is through from front to back, the rear end of the pressing bolt sequentially penetrates through the front clamping hole and the rear clamping hole and is positioned behind the rear contact finger, the rear end of the pressing bolt is fixedly provided with the pressing nut, the outer side of the pressing bolt between the front end of the pressing bolt and the front contact finger is provided with the front pressing spring, and the outer side of the pressing bolt between the pressing nut and the rear contact finger is provided with the rear pressing spring.

4. The blade-type disconnecting switch contact device according to claim 1 or 2, wherein the first connecting plate is provided with two first fixing holes which are vertically through at intervals in the front-rear direction, and the second connecting plate is provided with two second fixing holes which are vertically through at intervals in the front-rear direction.

5. The blade isolator contact assembly of claim 3 wherein the first plate has two first holes spaced apart from one another in a vertical direction, and the second plate has two second holes spaced apart from one another in a vertical direction.

6. The blade type disconnecting switch contact device according to claim 1, 2 or 5, wherein the front contact finger and the fixing box are fixedly mounted together through a bolt connection, and the rear contact finger and the fixing box are fixedly mounted together through a bolt connection.

7. The blade type disconnecting switch contact device according to claim 3, wherein the front contact finger is fixedly mounted with the fixing box through a bolt connection, and the rear contact finger is fixedly mounted with the fixing box through a bolt connection.

8. The contact device of the knife-type disconnecting switch according to claim 4, wherein the front contact finger and the fixed box are fixedly installed together through a bolt connection, and the rear contact finger and the fixed box are fixedly installed together through a bolt connection.