High-voltage switch moving and stationary contact

Abstract

The utility model discloses a high -pressure switch static and dynamic contact, including switch shell, the inner wall fixed mounting of switch shell has the base, and the inside of base is connected with the electric seat through the installation component, and one side of electric seat is provided with the fixed contact, and the upper end of fixed contact is provided with the semicircle arc surface, and the lower end one side of fixed contact is vertical facade, and one side of fixed contact is provided with the insulating block, and the shape of insulating block is same with fixed contact, and one side of insulating block is provided with the dynamic contact, and the side surface of dynamic contact is fixedly connected with the spring plate, and the upper end fixed connection of spring plate has the top plate, and the upper end of top plate is provided with the connector no. 1. The problem that the traditional high -pressure switch static and dynamic contact is easy to produce electrode arc phenomenon when contacting because the engaging speed is relatively slow is solved, avoids the electric corrosion situation to static and dynamic contact, thereby prevents to cause a lot of dimple to static and dynamic contact surface, reduces the carbon deposition that the arc sintering is formed on the contact surface simultaneously, thereby prolongs the service life of high -pressure switch static and dynamic contact.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage switch technology, specifically to a high-voltage switch moving and stationary contact. Background Technology

[0002] High-voltage load switches are switching devices used in power distribution systems to close, carry, and interrupt normal or overload currents. They are equipped with dedicated arc-extinguishing contacts and spring circuit breakers, and are often connected in series with high-voltage fuses for power transformer control.

[0003] Currently, all existing high-voltage switches have internal moving and stationary contacts, and the control circuit separates or closes based on the contact and separation of the moving and stationary contacts. However, there are still some shortcomings in the moving and stationary contacts of high-voltage switches. When using existing high-voltage switches, the contact speed and contact pressure of the moving and stationary contacts are relatively low. Therefore, the slow engagement speed of the moving and stationary contacts can cause electrode arcing. Under the action of the arc, the contacts will be eroded, resulting in many pits on the contact surface. At the same time, the sintering of the arc on the contact surface will also produce a relatively thick carbon layer, which will shorten the service life of the moving and stationary contacts of the high-voltage switch. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a high-voltage switch moving and stationary contact, which solves the problem that traditional high-voltage switch moving and stationary contacts are prone to electrode arcing due to slow meshing speed during contact. This avoids electro-erosion of the moving and stationary contacts, thereby preventing many pits from forming on the surface of the moving and stationary contacts. At the same time, it reduces carbon deposits formed on the contact surface due to arc sintering, thus extending the service life of the high-voltage switch moving and stationary contacts.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage switch moving and stationary contact, comprising a switch housing, a base fixedly installed on the inner wall of the switch housing, a conductive seat connected to the inside of the base via an installation assembly, a fixed contact on one side of the conductive seat, a semi-circular arc surface at the upper end of the fixed contact, a vertical surface at the lower end of the fixed contact, an insulating block symmetrically arranged on one side of the fixed contact, the insulating block having the same shape as the fixed contact, a moving contact on one side of the insulating block, a spring plate fixedly connected to the side surface of the moving contact, a top plate fixedly connected to the upper end of the spring plate, a connector one at the upper end of the top plate, the central axis of the moving contact located below the arc surface at the upper end of the insulating block, a driving assembly on the side surface of the spring plate, and a connector two on the other side surface of the conductive seat.

[0006] Preferably, a conductive plate is fixedly connected to one side surface of the conductive base, and one end of the conductive plate is fixedly connected to the other side surface of the fixed contact.

[0007] Preferably, a groove is formed on one side surface of the conductive base, the groove is located above the conductive plate, and a limiting groove is formed on the inner wall of the groove, the limiting groove corresponding to the spring plate.

[0008] Preferably, the drive assembly includes symmetrically arranged levers, one end of which is fixedly connected to a turntable, and one side surface of the turntable is fixedly connected to a knob through a rotating shaft passing through the switch housing.

[0009] Preferably, the two ends of the moving contact are symmetrically fixedly connected with limiting ring plates, the limiting ring plates protruding from the side surface of the moving contact, and the length of the moving contact is greater than the length of the insulating block.

[0010] Preferably, the mounting assembly includes a base, which is fixedly connected to the inner wall of the switch housing. A sliding block is slidably mounted inside the base, and a base plate is fixedly connected to the upper end of the sliding block. The upper surface of the base plate is fixedly connected to the lower surface of the insulating block, the fixed contact, and the conductive base.

[0011] Preferably, the connector includes a terminal block, which is fixedly installed on the upper surface of the top plate. The terminal block is internally threaded with a terminal post, the upper end of which passes through the switch housing.

[0012] Preferably, the second connector includes a side plate, which is fixedly connected to the other side surface of the conductive base. A mounting hole is fixedly connected to one side surface of the side plate, and a second terminal is threaded into the mounting hole. One end of the second terminal passes through the switch housing.

[0013] This utility model provides a moving and stationary contact for a high-voltage switch. Compared with the prior art, it has the following advantages: The moving and stationary contacts of the high-voltage switch are connected by a conductive base inside the switch housing, a fixed contact fixedly connected to one side of the conductive base via a conductive plate, and an insulating block symmetrically arranged on one side of the fixed contact. This, along with the moving contact on one side of the insulating block and a spring plate fixedly connected to the side surface of the moving contact, and the drive assembly, works together to solve the problem of electrode arcing caused by the slow meshing speed of traditional high-voltage switch moving and stationary contacts during contact. This avoids electro-erosion of the moving and stationary contacts, thus preventing numerous pits on the surface of the moving and stationary contacts. It also reduces carbon buildup on the contact surface caused by arc sintering, thereby extending the service life of the high-voltage switch moving and stationary contacts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This utility model Figure 1 Schematic diagram of the internal structure of the switch housing;

[0016] Figure 3 This utility model Figure 2 A side view structural diagram.

[0017] In the diagram: 1. Switch housing; 101. Knob; 102. Terminal 1; 103. Terminal 2; 104. Shaft; 105. Turntable; 106. Lever; 107. Terminal block; 2. Base; 201. Sliding block; 202. Base plate; 203. Insulating block; 3. Conductive base; 301. Fixed contact; 302. Conductive plate; 303. Groove; 304. Limiting groove; 305. Side plate; 4. Top plate; 401. Spring plate; 402. Moving contact; 403. Limiting ring plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a high-voltage switch moving and stationary contact, including a switch housing 1, a base 2 fixedly installed on the inner wall of the switch housing 1, a conductive seat 3 connected to the inside of the base 2 through an installation component, a fixed contact 301 provided on one side of the conductive seat 3, the upper end of the fixed contact 301 is provided with a semi-circular arc surface, the lower end of the fixed contact 301 is a vertical surface, an insulating block 203 symmetrically provided on one side of the fixed contact 301, the insulating block 203 is the same shape as the fixed contact 301, a moving contact 402 provided on one side of the insulating block 203, a spring plate 401 fixedly connected to the side surface of the moving contact 402, a top plate 4 fixedly connected to the upper end of the spring plate 401, a connector one provided on the upper end of the top plate 4, the central axis of the moving contact 402 is located below the arc surface of the upper end of the insulating block 203, a driving component is provided on the side surface of the spring plate 401, and a connector two is provided on the other side surface of the conductive seat 3.

[0020] As a technical optimization of this utility model, a conductive plate 302 is fixedly connected to one side surface of the conductive base 3, and one end of the conductive plate 302 is fixedly connected to the other side surface of the fixed contact 301. When using the switch, the conductive plate 302 can guide the contact 402, thereby making the switch use smoother.

[0021] As a technical optimization of this utility model, a groove 303 is provided on one side surface of the conductive base 3. The groove 303 is located above the conductive plate 302. A limiting groove 304 is provided on the inner wall of the groove 303. The limiting groove 304 corresponds to the spring plate 401. The groove 303 and the limiting groove 304 can limit the moving contact 402 and the spring plate 401, thereby improving the stability of the contact between the moving contact 402 and the spring plate 401 and the conductive base 3.

[0022] As a technical optimization of this utility model, the driving component includes symmetrically arranged levers 106. One end of the levers 106 is fixedly connected to a turntable 105. A knob 101 is fixedly connected to one side surface of the turntable 105 through a rotating shaft 104 passing through the switch housing 1. The turntable 105 and the symmetrically arranged levers 106 in the driving mechanism can agitate the spring plate 401, thereby facilitating the movement of the moving contact 402.

[0023] As a technical optimization of this utility model, the two ends of the moving contact 402 are symmetrically fixedly connected with limiting ring plates 403. The limiting ring plates 403 protrude from the side surface of the moving contact 402. The length of the moving contact 402 is greater than the length of the insulating block 203. The limiting ring plates 403 can limit the moving contact 402, thereby preventing the moving contact 402 from being misaligned with the insulating block 203 and the fixed contact 301 when the moving contact 402 passes the upper side of the insulating block 203 and the fixed contact 301.

[0024] As a technical optimization of this utility model, the mounting component includes a base 2, which is fixedly connected to the inner wall of the switch housing 1. A sliding block 201 is slidably installed inside the base 2. A base plate 202 is fixedly connected to the upper end of the sliding block 201. The upper surface of the base plate 202 is fixedly connected to the lower surface of the insulating block 203, the fixed contact 301, and the conductive seat 3. The mounting component facilitates the replacement of the conductive seat 3, the fixed contact 301, and the insulating block 203.

[0025] As a technical optimization of this utility model, the connector includes a terminal block 107, which is fixedly installed on the upper surface of the top plate 4. The terminal block 107 is internally threaded with a terminal post 102, the upper end of which passes through the switch housing 1.

[0026] As a technical optimization of this utility model, the second connector includes a side plate 305, which is fixedly connected to the other side surface of the conductive base 3. A mounting hole is fixedly connected to one side surface of the side plate 305, and a second terminal 103 is threadedly connected inside the mounting hole. One end of the second terminal 103 passes through the switch housing 1.

[0027] In use, this invention first connects the switch to the wire via terminals 102 and 103 on connectors 1 and 2, respectively. Then, when using the switch, the operator simply rotates the knob 101 at one end of the shaft 104. The knob 101 rotates the turntable 105, which in turn rotates the lever 106. This lever 106 pushes the spring plate 401, causing it to deform and bend. At this point, the moving contact 402 at one end of the spring plate 401 moves upwards along the vertical side of the insulating block 203. When the moving contact 402 reaches the critical point on the upper arc-shaped surface of the insulating block 203, the moving contact 40... 2 will quickly move from the upper end of the insulating block 203 to the upper end of the fixed contact 301, and at the same time move along the fixed contact 301 to the groove 303 on one side surface of the conductive base 3. At this time, the switch is closed. When the switch needs to be turned off, the operator needs to rotate the knob 101 in the opposite direction. Therefore, the knob 101 will move the spring plate 401 in the opposite direction through the lever 106. At this time, the spring plate 401 will drive the moving contact 402 away from the conductive base 3 and move to one side of the insulating block 203. During this process, the moving contact 402 will always be in contact with the side surface of the fixed contact 301, so as to rub the carbon layer on the side surface of the fixed contact 301 and prevent the carbon layer from accumulating and becoming thicker.

[0028] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage switch moving and stationary contacts, comprising a switch housing (1), characterized in that: A base (2) is fixedly installed on the inner wall of the switch housing (1). A conductive seat (3) is connected to the inside of the base (2) through a mounting assembly. A fixed contact (301) is provided on one side of the conductive seat (3). The upper end of the fixed contact (301) is provided with a semi-circular arc surface. The lower end of the fixed contact (301) is a vertical surface. An insulating block (203) is symmetrically provided on one side of the fixed contact (301). The insulating block (203) has the same shape as the fixed contact (301). A movable contact (402) is provided on one side of the block (203). A spring plate (401) is fixedly connected to the side surface of the movable contact (402). A top plate (4) is fixedly connected to the upper end of the spring plate (401). A connector is provided on the upper end of the top plate (4). The central axis of the movable contact (402) is located below the arc-shaped surface at the upper end of the insulating block (203). A driving assembly is provided on the side surface of the spring plate (401). A connector is provided on the other side surface of the conductive base (3).

2. The high-voltage switch moving and stationary contacts according to claim 1, characterized in that: A conductive plate (302) is fixedly connected to one side surface of the conductive base (3), and one end of the conductive plate (302) is fixedly connected to the other side surface of the fixed contact (301).

3. The moving and stationary contacts of a high-voltage switch according to claim 1, characterized in that: A groove (303) is provided on one side surface of the conductive base (3). The groove (303) is located above the conductive plate (302). A limiting groove (304) is provided on the inner wall of the groove (303). The limiting groove (304) corresponds to the spring plate (401).

4. The moving and stationary contacts of a high-voltage switch according to claim 1, characterized in that: The drive assembly includes symmetrically arranged levers (106), one end of which is fixedly connected to a turntable (105), and one side surface of the turntable (105) is fixedly connected to a knob (101) through a rotating shaft (104) passing through the switch housing (1).

5. A high-voltage switch moving and stationary contact according to claim 1, characterized in that: The moving contact (402) is symmetrically fixedly connected to two ends of a limiting ring plate (403), the limiting ring plate (403) protruding from the side surface of the moving contact (402), and the length of the moving contact (402) is greater than the length of the insulating block (203).

6. The moving and stationary contacts of a high-voltage switch according to claim 1, characterized in that: The mounting assembly includes a base (2), which is fixedly connected to the inner wall of the switch housing (1). A sliding block (201) is slidably installed inside the base (2). A base plate (202) is fixedly connected to the upper end of the sliding block (201). The upper surface of the base plate (202) is fixedly connected to the lower surface of the insulating block (203), the fixed contact (301), and the conductive seat (3).

7. A high-voltage switch moving and stationary contact according to claim 1, characterized in that: The connector includes a terminal block (107), which is fixedly installed on the upper surface of the top plate (4). The terminal block (107) is internally threaded with a terminal post (102), the upper end of which passes through the switch housing (1).

8. A high-voltage switch moving and stationary contact according to claim 1, characterized in that: The second connector includes a side plate (305), which is fixedly connected to the other side surface of the conductive base (3). A mounting hole is fixedly connected to one side surface of the side plate (305), and a second terminal (103) is threadedly connected inside the mounting hole. One end of the second terminal (103) passes through the switch housing (1).

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