A high voltage vacuum circuit breaker

Abstract

The utility model relates to the technical field of high-voltage vacuum circuit breakers, and discloses a high-voltage vacuum circuit breaker, a housing support, a spring operating mechanism, a vacuum arc extinguishing chamber, an operating lever and a knife switch, wherein the spring operating mechanism is embedded in the inner top of the housing support, the vacuum arc extinguishing chamber is installed on the left side of the housing support, the operating lever is installed on the front of the housing support, and the operating lever is connected to the spring operating mechanism, the knife switch is installed inside the housing support, the front and back of the housing support are connected through a driving mechanism, and both ends of the top of the housing support are embedded with a closing mechanism. The high-voltage vacuum circuit breaker prevents external impurities from entering the interior of the housing support to affect the components inside the housing support, and at the same time, through the additional closing mechanism, the knife switch is automatically restricted when the knife switch is opened or closed, so as to prevent the knife switch from bouncing due to the drive of the spring operating mechanism when opening or closing.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage vacuum circuit breakers, in particular to a high-voltage vacuum circuit breaker. Background Art

[0002] A high-voltage vacuum circuit breaker is a device used to interrupt high-voltage circuits. It uses vacuum as an insulating medium, can effectively cut off circuits and prevent the generation of arcs. When using existing high-voltage vacuum circuit breakers, in order to limit the increase in rated capacity current, the heat dissipation efficiency during use is reduced, which results in a large amount of heat energy being generated when the circuit breaker is opened. The heat energy is accumulated inside the device and cannot be discharged normally, which results in abnormal temperature of the device, thereby reducing the service life of the electronic components inside the device. At the same time, the switch knife uses a spring for driving, which is prone to closing bounce and opening rebound. The bounce will produce a higher overvoltage affecting the stable operation of the power grid. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a high-voltage vacuum circuit breaker to solve the technical problem that a large amount of heat energy is generated during the above-mentioned opening, which accumulates inside the device and cannot be discharged normally, thereby causing abnormal temperature of the device, thereby reducing the service life of electronic components inside the device. At the same time, the knife is driven by a spring, which is prone to closing bounce and opening rebound. The bounce will produce a high overvoltage and affect the stable operation of the power grid.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-voltage vacuum circuit breaker, comprising: a shell bracket, a spring operating mechanism, a vacuum interrupter, a joystick and a knife switch, wherein the spring operating mechanism is embedded in the inner top of the shell bracket, the vacuum interrupter is installed on the left side of the shell bracket, the joystick is installed on the front side of the shell bracket, and the joystick is connected to the spring operating mechanism, the knife switch is installed inside the shell bracket, the front and back sides of the shell bracket are connected through a driving mechanism, and both ends of the top of the shell bracket are embedded with a closing mechanism.

[0007] The driving mechanism comprises a hollow column, the hollow column is connected through the housing bracket, a first spring is connected inside the hollow column, and the other end of the first spring is connected to a trapezoidal plate.

[0008] The closing mechanism includes a hollow sliding frame, which is embedded in the top of the outer shell bracket. The interior of the hollow sliding frame is slidably connected to a sealing plate, the exterior of the sealing plate is connected to a second spring, and the second spring is connected to the interior of the hollow sliding frame. The bottom of the sealing plate is connected to a short arm, and the short arm is connected to the trapezoidal plate.

[0009] Preferably, the knife is located just above the middle of the two trapezoidal plates, and the knife is connected to the spring operating mechanism, so that the knife can drive the two trapezoidal plates to move.

[0010] Preferably, opposite ends of the two trapezoidal plates are fixedly connected with rubber blocks, and the rubber blocks are square rubber insulating plates. The rubber blocks can prevent the switch from generating a conductive effect when the switch contacts the trapezoidal plates.

[0011] Preferably, the hollow sliding frame is a hollow square plate, and grooves are provided on the top and the bottom of the hollow sliding frame, and the hollow sliding frame can discharge the heat inside the outer shell bracket through the grooves.

[0012] Preferably, both ends of the outer shell bracket are connected with lifting rings, and the lifting rings are carbon steel hooks, and the lifting rings are convenient for staff to drive the outer shell bracket to move.

[0013] Preferably, bolts are connected to the outside of the outer shell bracket at equal intervals, and the hollow column and the hollow sliding frame are connected to the outer shell bracket by bolts, and the bolts can fix the hollow column and the hollow sliding frame.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a high-voltage vacuum circuit breaker, which has the following beneficial effects:

[0016] The high-voltage vacuum circuit breaker automatically dissipates heat for the housing bracket through the added driving mechanism and the knife when the knife is opened, so as to avoid a large amount of heat energy being accumulated inside the housing bracket and causing aging of the internal parts. At the same time, when the knife is closed, the driving mechanism is released by the knife and drives the closing mechanism to automatically close, so as to avoid external impurities entering the interior of the housing bracket and affecting the internal parts of the housing bracket. At the same time, the added closing mechanism automatically restricts the knife when the knife is opened or closed, so as to avoid the knife from bouncing when opening or closing due to the drive of the spring operating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the left side of the utility model;

[0019] Figure 3 This is a front view of the driving mechanism of the utility model;

[0020] Figure 4 This is a front sectional view of the driving mechanism of the utility model.

[0021] In the figure: 1. shell bracket; 11. lifting ring; 12. bolt; 2. spring operating mechanism; 3. vacuum arc extinguishing chamber; 4. operating lever; 5. driving mechanism; 51. hollow column; 52. first spring; 53. trapezoidal plate; 531. rubber block; 54. short arm; 6. closing mechanism; 61. hollow sliding frame; 62. closing plate; 63. second spring; 7. knife switch. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a technical solution, please refer to Figure 1 and Figure 2 A high-voltage vacuum circuit breaker comprises: a housing support 1, a spring operating mechanism 2, a vacuum interrupter 3, an operating rod 4 and a switch 7. This scheme is a structural improvement of the non-electronic component part based on the high-voltage vacuum circuit breaker in the prior art, wherein the housing support 1, the spring operating mechanism 2, the vacuum interrupter 3, the operating rod 4 and the switch 7 are common high-voltage vacuum circuit breaker products that have been promoted in the prior art.

[0024] Both ends of the outer shell bracket 1 are connected with lifting rings 11, and the lifting rings 11 are carbon steel hooks. The lifting rings 11 are convenient for the staff to drive the outer shell bracket 1 to move. The spring operating mechanism 2 is embedded in the inner top of the outer shell bracket 1, the vacuum arc extinguishing chamber 3 is installed on the left side of the outer shell bracket 1, and the joystick 4 is installed on the front of the outer shell bracket 1, and the joystick 4 is connected to the spring operating mechanism 2.

[0025] The knife switch 7 is installed inside the outer shell bracket 1. The knife switch 7 is located just above the middle of the two trapezoidal plates 53, and the knife switch 7 is connected to the spring operating mechanism 2. The knife switch 7 can drive the two trapezoidal plates 53 to move. The front and back sides of the outer shell bracket 1 are connected through the driving mechanism 5. The top two ends of the outer shell bracket 1 are embedded with closing mechanisms 6. The spring operating mechanism 2 can drive the knife switch 7 to move. The vacuum interrupter 3 can extinguish the arc generated by the knife switch 7. The joystick 4 can drive the spring operating mechanism 2 to move.

[0026] See also Figure 3 and Figure 4The driving mechanism 5 includes a hollow column 51. A short groove is provided on the top of the hollow column 51 to facilitate the movement of the short arm 54. The hollow column 51 can guide the trapezoidal plate 53. The hollow column 51 is connected to the outer shell bracket 1. A first spring 52 is connected to the inside of the hollow column 51. The first spring 52 can drive the trapezoidal plate 53 to move, and the other end of the first spring 52 is connected to the trapezoidal plate 53. The trapezoidal plate 53 can be driven by the knife 7.

[0027] The opposite ends of the two trapezoidal plates 53 are fixedly connected with rubber blocks 531 , and the rubber blocks 531 are square rubber insulating plates. The rubber blocks 531 can prevent the switch blade 7 from generating a conductive effect when in contact with the trapezoidal plates 53 .

[0028] The closing mechanism 6 includes a hollow sliding frame 61, which can be slidably connected to a sealing plate 62. Bolts 12 are evenly spaced on the outside of the outer shell bracket 1, and the hollow column 51 and the hollow sliding frame 61 are connected to the outer shell bracket 1 by bolts 12. The bolts 12 can fix the hollow column 51 and the hollow sliding frame 61.

[0029] The hollow sliding frame 61 is a hollow square plate, and grooves are provided on the top and bottom of the hollow sliding frame 61. The hollow sliding frame 61 can discharge the heat inside the outer shell bracket 1 through the grooves. The hollow sliding frame 61 is embedded in the top of the outer shell bracket 1, and the interior of the hollow sliding frame 61 is slidably connected to a sealing plate 62, which can seal the hollow sliding frame 61.

[0030] The outside of the sealing plate 62 is connected to a second spring 63, which can drive the sealing plate 62 to move, and the second spring 63 is connected to the inside of the hollow sliding frame 61. The bottom of the sealing plate 62 is connected to a short arm 54, which can connect the sealing plate 62 to the trapezoidal plate 53, and the short arm 54 and the trapezoidal plate 53 are connected.

[0031] In this solution, the housing bracket 1 is first installed, and the spring operating mechanism 2 is controlled to move by an externally connected motor or joystick 4, and then the knife switch 7 is driven to close or open the switch, and the arc generated by the knife switch 7 when closing or opening the switch is extinguished by the vacuum interrupter 3;

[0032] When the knife switch 7 descends to open the switch, it will squeeze the two trapezoidal plates 53 to move away from each other, and then transmit through the short arm 54 to drive the sealing plate 62 to move, thereby releasing the sealing of the hollow sliding frame 61, so that the hollow sliding frame 61 can be ventilated and exhausted, and the heat inside the outer shell bracket 1 can be quickly discharged. At the same time, through the setting of the two first springs 52, the trapezoidal plates 53 and the knife switch 7 can generate a damping rod when the knife switch 7 moves through the vacuum arc extinguishing chamber 3 to open the switch, thereby limiting the bounce of the knife switch 7. At the same time, when the knife switch 7 is closed, the bottom of the knife switch 7 and the top of the trapezoidal plate 53 are released. At the same time, the additional power generated by the spring operating mechanism 2 of the knife switch 7 cannot drive the two trapezoidal plates 53 to move away from each other, thereby absorbing the bounce generated by the closing.

[0033] When the knife switch 7 is opened, the outer shell bracket 1 is automatically cooled by the added driving mechanism 5 and the knife switch 7, so as to avoid a large amount of heat energy being accumulated inside the outer shell bracket 1 and causing aging of the internal parts. At the same time, when the knife switch 7 is closed, the driving mechanism 5 is released by the knife switch 7 and drives the closing mechanism 6 to automatically close, so as to avoid external impurities entering the interior of the outer shell bracket 1 and affecting the internal parts of the outer shell bracket 1. At the same time, the additional closing mechanism 6 automatically restricts the knife switch 7 when it is opened or closed, so as to avoid the knife switch 7 from bouncing when it is opened or closed due to the drive of the spring operating mechanism 2.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high voltage vacuum circuit breaker, comprising: A housing support (1), a spring operating mechanism (2), a vacuum interrupter (3), an operating lever (4) and a switch (7), characterized in that: the spring operating mechanism (2) is embedded in the inner top of the housing support (1), the vacuum interrupter (3) is installed on the left side of the housing support (1), the operating lever (4) is installed on the front of the housing support (1), and the operating lever (4) and the spring operating mechanism (2) are connected, the switch (7) is installed inside the housing support (1), the front and back of the housing support (1) are connected through a driving mechanism (5), and both ends of the top of the housing support (1) are embedded with a closing mechanism (6); The driving mechanism (5) comprises a hollow column (51), the hollow column (51) is connected to the outer shell bracket (1), a first spring (52) is connected to the inside of the hollow column (51), and the other end of the first spring (52) is connected to a trapezoidal plate (53); The closing mechanism (6) comprises a hollow sliding frame (61), wherein the hollow sliding frame (61) is embedded in the top of the outer shell bracket (1), wherein the interior of the hollow sliding frame (61) is slidably connected to a sealing plate (62), wherein the exterior of the sealing plate (62) is connected to a second spring (63), and the second spring (63) is connected to the interior of the hollow sliding frame (61), and the bottom of the sealing plate (62) is connected to a short arm (54), and the short arm (54) is connected to the trapezoidal plate (53).

2. A high voltage vacuum circuit breaker according to claim 1, characterized in that: The gate knife (7) is located directly above the middle of the two trapezoidal plates (53), and the gate knife (7) is connected to the spring operating mechanism (2).

3. A high voltage vacuum circuit breaker according to claim 1, characterized in that: The two trapezoidal plates (53) are both fixedly connected at opposite ends thereof with rubber blocks (531), and the rubber blocks (531) are square rubber insulating plates.

4. A high voltage vacuum circuit breaker according to claim 1, characterized in that: The hollow sliding frame (61) is a hollow square plate, and grooves are provided on the top and bottom of the hollow sliding frame (61).

5. A high voltage vacuum circuit breaker according to claim 1, characterized in that: Both ends of the shell bracket (1) are connected with lifting rings (11), and the lifting rings (11) are carbon steel lifting hooks.

6. A high voltage vacuum circuit breaker according to claim 1, characterized in that: Bolts (12) are connected to the outside of the outer shell bracket (1) at equal intervals, and the hollow column (51) and the hollow sliding frame (61) are both connected to the outer shell bracket (1) via the bolts (12).

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