High-voltage disconnector with stable connection

Abstract

The utility model discloses a high -tension isolator of stable connection, this high -tension isolator of stable connection includes installation support, and the insulator of fixedly equipped at its both ends, one of the insulator is equipped with static contact seat, and the other insulator is equipped with rotatable contact breaker, the contact breaker extension is equipped with the contact head of having elastic compensation function, the end of contact head extension is equipped with the expansion guide portion of outward inclination, is used for making contact head enter static contact seat and closely abuts at its both sides. Through expansion guide portion makes contact head smoothly enter static contact seat and accurate alignment contact, the arc contact head provides elastic compression force continuously under the closed state, compensates the clearance deviation caused by long -term wear, promotes the contact pressure stability and reduces the contact resistance, the heat conduction area is through the heat conduction board and the heat dissipation fin synergism, forms efficient heat conduction path, exports joule heat fast, restrains temperature rise, strengthens electrical connection reliability, and synchronous promotion equipment thermal stability and long -term operation life.

Description

Technical Field

[0001] This utility model relates to the field of disconnecting switch technology, and in particular to a high-voltage disconnecting switch with stable connection. Background Technology

[0002] A high-voltage switch is an important device used to control, protect, and isolate high-voltage circuits, playing a crucial role in connecting and disconnecting high-voltage circuits in power systems. Its main functions include interrupting and making current to ensure the safe, stable, and efficient operation of the power system.

[0003] Existing high-voltage disconnect switches operate by rotating a blade connected to an electrical contact on one side. When the blade rotates to clamp the electrical contact on the other side, the circuit is closed; when the blade separates from the contact, the circuit is opened. While this structure provides a certain degree of stability in the closed state, the blade is prone to deformation and wear over long-term operation, leading to insufficient clamping of the electrical contact and reduced contact stability after closing, thus affecting the reliability of the electrical connection. Furthermore, due to mechanical fatigue and environmental factors, the contact pressure between the blade and the electrical contact may gradually weaken, further increasing the risk of poor contact and posing a potential threat to equipment safety. Therefore, the applicant has developed a beneficial design and found a solution to the above problems. The technical solution described below arose from this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the traditional high-voltage disconnect switch design and to provide a product that offers reliable connection, improved transmission efficiency, and anti-slip properties.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A stable high-voltage disconnecting switch includes a mounting bracket and insulators fixed at both ends thereon. One of the insulators is provided with a stationary contact seat, and the other insulator is provided with a rotatable knife switch. The knife switch extends with a contact head having an elastic compensation function. The end of the contact head extends with an outwardly inclined expansion guide for allowing the contact head to enter the stationary contact seat and tightly abut against its two sides. The knife switch is provided with a heat-conducting area close to the stationary contact seat. A heat-conducting plate is fixed on the outer wall of the heat-conducting area. A plurality of equally spaced heat dissipation fins are distributed on the outer surface of the heat-conducting plate.

[0007] Preferably, another insulator is provided with a support base, the support base is provided with a bearing portion, and the switch is pivotally disposed on both sides of the bearing portion.

[0008] Preferably, the static contact seat has outwardly protruding contact portions on both sides, and an inclined guide portion is provided at the entrance to the contact portion.

[0009] Preferably, an operating element is provided between the gate blades, and the operating element is provided with an operating hole.

[0010] Preferably, a plurality of fastening bolts are provided between the contact heads, and the ends of the fastening bolts are threaded with nuts, and the contact heads are configured with an arc shape.

[0011] Preferably, the heat-conducting plate further includes a connecting plate located above the stationary contact seat, the heat dissipation fins extend and are distributed on the surface of the connecting plate, a fastening bolt is provided on one side of the heat-conducting plate and passes through the heat-conducting area to another heat-conducting plate, and a nut is threaded to the end of the fastening bolt.

[0012] Beneficial effects:

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention utilizes an expanded guide section to allow the contact head to smoothly enter and precisely align with the stationary contact seat. The arc-shaped contact head continuously provides elastic clamping force in the closed state, effectively compensating for gap misalignment caused by long-term wear, significantly improving contact pressure stability and reducing contact resistance. Simultaneously, the heat-conducting area, through the synergistic effect of the heat-conducting plate and heat dissipation fins, forms an efficient heat conduction path, rapidly dissipating Joule heat at the contact point and suppressing the temperature rise effect. Thus, while enhancing the reliability of electrical connections, it simultaneously improves the thermal stability and long-term service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a high-voltage disconnecting switch with stable connection according to the present invention;

[0016] Figure 2 This utility model Figure 1 A partially enlarged view A of a stable high-voltage disconnector;

[0017] Figure 3 This is a side cross-sectional view of a high-voltage disconnecting switch with stable connection according to the present invention.

[0018] Figure 4 This utility model Figure 3 A partially enlarged view (B) of a type of high-voltage disconnecting switch with stable connection;

[0019] The correspondence between the labels and component names in the attached figures is as follows:

[0020] Reference numerals: 1. Mounting bracket; 2. Insulator; 3. Stationary contact seat; 4. Knife switch; 5. Heat-conducting plate; 6. Support base; 7. Operating component; 8. Fastening bolt; 9. Nut; 31. Contact part; 32. Guide part; 41. Contact head; 42. Expansion guide part; 43. Heat-conducting area; 51. Heat dissipation fins; 52. Connecting plate; 61. Bearing part; 71. Operating hole. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0024] Reference example Figures 1 to 4 A stable high-voltage disconnecting switch includes a mounting bracket 1 and insulators 2 fixed at both ends thereon. One insulator 2 is provided with a stationary contact seat 3, and the other insulator 2 is provided with a rotatable knife 4. The knife 4 extends to provide a contact head 41 with elastic compensation function. The end of the contact head 41 extends to provide an outwardly inclined expansion guide 42 for allowing the contact head 41 to enter the stationary contact seat 3 and tightly abut against its two sides. The knife 4 is provided with a heat-conducting area 43 and is close to the stationary contact seat 3. A heat-conducting plate 5 is fixed to the outer wall of the heat-conducting area 43. A plurality of equally spaced heat dissipation fins 51 are distributed on the outer surface of the heat-conducting plate 5.

[0025] The expansion guide section 42 allows the contact head 41 to smoothly enter the stationary contact seat 3 and make precise contact with it. The arc-shaped contact head 41 continuously provides elastic clamping force in the closed state, effectively compensating for the gap displacement caused by long-term wear, significantly improving the stability of contact pressure and reducing contact resistance. At the same time, the heat conduction area 43 forms an efficient heat conduction path through the synergistic effect of the heat conduction plate 5 and the heat dissipation fins 51, quickly dissipating Joule heat at the contact point and suppressing the temperature rise effect. Thus, while enhancing the reliability of electrical connection, it simultaneously improves the thermal stability and long-term service life of the equipment.

[0026] It is worth mentioning that the other insulator 2 is provided with a support base 6, the support base 6 is provided with a bearing seat, and the switch 4 is pivotally mounted on both sides of the bearing part 61;

[0027] It is worth mentioning that the stationary contact base 3 has outwardly protruding contact portions 31 on both sides, and an inclined guide portion 32 is provided at the entrance to the contact portion 31. The contact portion 31 enhances the contact pressure with the contact head 41, and the guide portion 32 cooperates with the expansion guide portion 42 to reduce the resistance of the contact head 41 entering the sides of the contact portion 31, ensuring that the contact head 41 achieves smooth guidance and precise alignment during the closing process, while reducing mechanical wear, extending the service life of the structure, and improving the reliability and stability of the overall electrical connection.

[0028] It is worth mentioning that an operating component 7 is provided between the switches 4. The operating component 7 is provided with an operating hole 71. The operator uses an insulating rod to hook into the operating hole 71 to control the opening and closing of the switches 4, ensuring that the operation process is safe and reliable.

[0029] It is worth mentioning that multiple fastening bolts 8 are provided between the contact heads 41, and nuts 9 are threaded to the ends of the fastening bolts 8. The contact heads 41 are designed with an arc shape.

[0030] It is worth mentioning that the heat-conducting plate 5 also includes a connecting plate 52, which is located above the stationary contact seat 3. The heat dissipation fins 51 extend and are distributed on the surface of the connecting plate 52. A fastening bolt 8 is provided on one side of the heat-conducting plate 5, which passes through the heat-conducting area 43 and connects to another heat-conducting plate 5. The end of the fastening bolt 8 is threaded with a nut 9. The heat exchange area is expanded by the connecting plate 52. The heat-conducting plate 5 is fixed by the fastening bolt 8, which causes the adjacent gate 4 to shrink towards both sides of the stationary contact seat 3, ensuring that the contact head 41 and the contact part 31 are stably connected. At the same time, the heat-conducting area 43 is in close contact with the heat-conducting plate 5, reducing contact gaps, improving heat conduction efficiency, and enhancing the thermal stability and long-term reliability of the equipment in high-temperature operating environments.

[0031] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A stable high-voltage disconnecting switch, comprising a mounting bracket (1) and insulators (2) fixed at both ends thereon, wherein one of the insulators (2) is provided with a stationary contact seat (3) and the other insulator (2) is provided with a rotatable knife switch (4), characterized in that: The breaker (4) extends with a contact head (41) having an elastic compensation function. The end of the contact head (41) extends with an outwardly inclined expansion guide (42) for allowing the contact head (41) to enter the stationary contact seat (3) and closely abut against its two sides. The breaker (4) has a heat-conducting area (43) close to the stationary contact seat (3). A heat-conducting plate (5) is fixed on the outer wall of the heat-conducting area (43). A number of equally spaced heat dissipation fins (51) are distributed on the outer surface of the heat-conducting plate (5).

2. The high-voltage disconnecting switch with stable connection according to claim 1, characterized in that: Another insulator (2) is provided with a support base (6), the support base (6) is provided with a bearing portion (61), and the switch (4) is pivotally disposed on both sides of the bearing portion (61).

3. The high-voltage disconnecting switch with stable connection according to claim 1, characterized in that: The static contact seat (3) has outwardly protruding contact portions (31) on both sides, and an inclined guide portion (32) is provided at the entrance to the contact portion (31).

4. The high-voltage disconnecting switch with stable connection according to claim 1, characterized in that: An operating element (7) is provided between the guillotine blades (4), and the operating element (7) is provided with an operating hole (71).

5. The high-voltage disconnecting switch with stable connection according to claim 1, characterized in that: Multiple fastening bolts (8) are provided between the contact heads (41), and the ends of the fastening bolts (8) are threaded with nuts (9). The contact heads (41) are configured with an arc shape.

6. The high-voltage disconnecting switch with stable connection according to claim 1, characterized in that: The heat-conducting plate (5) also includes a connecting plate (52) and is located above the stationary contact seat (3). The heat dissipation fins (51) extend and are distributed on the surface of the connecting plate (52). A fastening bolt (8) is provided on one side of the heat-conducting plate (5) and passes through the heat-conducting area (43) to another heat-conducting plate (5). The end of the fastening bolt (8) is threaded with a nut (9).

Images