Stable transmission structure for high-voltage circuit breaker

Abstract

The utility model relates to the technical field of high-voltage circuit breakers, in particular to a stable transmission structure for a high-voltage circuit breaker, which comprises a high-voltage circuit breaker power-off tube, a copper rod is fixedly connected to the top inside the high-voltage circuit breaker power-off tube, and a copper sleeve is slidably connected to the bottom inside the high-voltage circuit breaker power-off tube. A circular groove is formed in the center of the bottom of the copper sleeve, the bottom of the circular groove is fixedly connected with an inflation pipeline, and the front side and the rear side of the bottom of the high-voltage circuit breaker outage pipe are fixedly connected with transmission rods. The high-voltage circuit breaker has the advantages that when the high-voltage circuit breaker is powered off, the sulfur hexafluoride gas filled in the high-voltage circuit breaker is consumed in order to consume electric arcs generated when the copper rod and the copper sleeve are powered off, the end cover can be opened to discharge sulfur fluoride, oxygen and other substances generated by arc extinguishing in the copper sleeve, and then new sulfur hexafluoride is injected into the high-voltage circuit breaker from the inflation pipeline; therefore, the purity of the sulfur hexafluoride is improved, and the condition that the subsequent arc extinguishing effect is influenced by the product of the sulfur hexafluoride in the arc extinguishing process is avoided.

Description

Technical Field

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

[0002] A high - voltage circuit breaker is an important electrical equipment in the existing power system. When a fault occurs, some or all of the equipment needs to be connected to or disconnected from the power system. The circuit breaker can quickly cut off or connect to protect the normal operation of other parts of the system that have not failed or been damaged. Since most faults of the circuit breaker come from its internal structure, protection element auxiliary switches are often provided in the circuit breaker, which have functions of opening and closing, signal control, and interlock protection. They are of great significance for the normal operation of the equipment. The inside of the power - off switch position of the high - voltage circuit breaker is filled with a large amount of sulfur hexafluoride. After the opening operation, the sulfur hexafluoride inside will be consumed to some extent, affecting the subsequent opening safety. Therefore, a transmission structure for a high - voltage circuit breaker that can safely replace sulfur hexafluoride during use is needed. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a stable transmission structure for a high - voltage circuit breaker, effectively solving the deficiencies of the prior art.

[0004] The purpose of the utility model is achieved by the following technical solutions: A stable transmission structure for a high - voltage circuit breaker, including a high - voltage circuit breaker power - off tube. At the top inside the high - voltage circuit breaker power - off tube, a copper rod is fixedly connected. At the bottom inside the high - voltage circuit breaker power - off tube, a copper sleeve is slidably connected. At the center of the bottom of the copper sleeve, a circular groove is opened, and an inflation pipeline is fixedly connected to the bottom of the circular groove. On the front and back sides of the bottom of the high - voltage circuit breaker power - off tube, transmission rods are fixedly connected. At the bottom of the high - voltage circuit breaker power - off tube, a high - voltage circuit breaker driving part is fixedly connected. The bottom of the transmission rod is fixedly connected to the output end of the high - voltage circuit breaker driving part.

[0005] Optionally, a first wire is fixedly connected to the top of the copper rod, and a second wire is fixedly connected to one side of the bottom of the copper sleeve. The first wire and the second wire are respectively electrically connected to the high - voltage circuit. The length margin of the second wire inside the high - voltage circuit breaker power - off tube is greater than the sliding stroke of the copper sleeve.

[0006] By adopting the above - mentioned technical solution: By arranging a fixed copper rod and a sliding copper sleeve inside the high - voltage circuit breaker power - off tube, the sliding of the copper sleeve is used to control whether the two are in contact and butt - joint, thereby controlling the on - off state of the high - voltage circuit breaker. Limiting the length of the second wire enables the two to maintain electrical connection during the sliding of the copper sleeve, avoiding the situation of poor electrical contact caused by the sliding of the copper sleeve.

[0007] Optionally, the diameter of the copper rod is adapted to the inner diameter of the copper sleeve, and the sliding stroke of the copper sleeve in the power-off tube of the high-voltage circuit breaker is greater than the length of the contact surface between the copper rod and the copper sleeve.

[0008] Adopting the above technical solution: by restricting the diameter sliding stroke of the copper rod and the copper sleeve, etc., when the copper sleeve slides upward, the two can contact and conduct electricity to keep the high-voltage circuit energized. When the copper sleeve slides downward under the action of the driving part, the disconnection state of the two can be contacted, so that the high-voltage circuit can be quickly powered off.

[0009] Optionally, one end of the gas filling pipeline passes through the power-off tube of the high-voltage circuit breaker and is located outside it, and an end cover is threadedly connected to the end of the gas filling pipeline.

[0010] Adopting the above technical solution: by arranging a gas filling pipeline communicating with the outside at the bottom of the copper sleeve, the end of the gas filling pipeline is usually closed by an end cover, so that sulfur hexafluoride gas is stored in the space between the copper sleeve and the copper rod. When the high-voltage circuit breaker is powered off, the sulfur hexafluoride gas filled inside is consumed to consume the arc generated when the copper rod and the copper sleeve are powered off. Then, the end cover can be opened to discharge substances such as sulfur fluoride and oxygen generated by arc extinguishing inside the copper sleeve, and new sulfur hexafluoride can be poured in from the gas filling pipeline to improve the purity of sulfur hexafluoride inside the power-off tube of the high-voltage circuit breaker and avoid the situation that the products of sulfur hexafluoride during the arc extinguishing process affect the subsequent arc extinguishing effect.

[0011] Optionally, both the gas filling pipeline and the end cover are made of insulating materials, the gas filling pipeline is a telescopic tube, and the telescopic length of the gas filling pipeline is greater than the sliding stroke of the copper sleeve.

[0012] Optionally, the inside of the power-off tube of the high-voltage circuit breaker is in a closed state, the inner diameter of the power-off tube of the high-voltage circuit breaker is adapted to the diameter of the copper sleeve, and the friction coefficient between the inner wall of the power-off tube of the high-voltage circuit breaker and the copper sleeve is less than 0.5.

[0013] Optionally, the length of the transmission rod is adapted to the output stroke of the driving part of the high-voltage circuit breaker. In the normal state, the output end of the driving part of the high-voltage circuit breaker is in an extended state, and after receiving a power-off signal, the output end of the driving part of the high-voltage circuit breaker contracts.

[0014] The utility model has the following advantages:

[0015] 1. The stable transmission structure for the high-voltage circuit breaker controls the on-off state of the high-voltage circuit breaker by setting a fixed copper rod and a sliding copper sleeve inside the power-off tube of the high-voltage circuit breaker, and controlling whether the two contact and dock by the sliding of the copper sleeve. Restricting the length of the second wire enables the copper sleeve to maintain electrical connection between the two during the sliding process, avoiding the situation of poor circuit contact caused by the sliding of the copper sleeve.

[0016] 2. The stable transmission structure for the high-voltage circuit breaker restricts the diameter sliding stroke of the copper rod and the copper sleeve. When the copper sleeve slides upward, the two can contact and conduct electricity to keep the high-voltage circuit energized. When the copper sleeve slides downward under the action of the driving part, the contact state between the two can be released, so that the high-voltage circuit can be quickly powered off.

[0017] 3. The stable transmission structure for the high-voltage circuit breaker is provided with an inflation pipeline communicating with the outside at the bottom of the copper sleeve. Usually, the end of the inflation pipeline is closed by an end cover, so that sulfur hexafluoride gas is stored in the space between the copper sleeve and the copper rod. When the high-voltage circuit breaker is powered off, the sulfur hexafluoride gas filled inside is consumed to consume the arc generated when the copper rod and the copper sleeve are powered off. Then, the end cover can be opened to discharge substances such as sulfur fluoride and oxygen generated by arc extinguishing inside the copper sleeve, and new sulfur hexafluoride can be poured into the inflation pipeline to improve the purity of sulfur hexafluoride inside the power-off tube of the high-voltage circuit breaker and avoid the situation that the products of sulfur hexafluoride during the arc extinguishing process affect the subsequent arc extinguishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic cross-sectional structural diagram of the present invention;

[0020] Figure 3 is of the present invention Figure 1 is an enlarged schematic structural diagram of part A in the present invention;

[0021] Figure 4 is of the present invention Figure 1 is an enlarged schematic structural diagram of part B in the present invention;

[0022] Figure 5 is a schematic structural diagram of the present invention without a housing;

[0023] Figure 6 is of the present invention Figure 5 is an enlarged schematic structural diagram of part C in the present invention.

[0024] In the figure: 1 - high-voltage circuit breaker power-off tube, 2 - copper rod, 3 - copper sleeve, 4 - circular groove, 5 - inflation pipeline, 6 - transmission rod, 7 - high-voltage circuit breaker driving part, 8 - first electric wire, 9 - second electric wire, 10 - end cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0026] As shown Figures 1 to 6 in the figure, a stable transmission structure for a high - voltage circuit breaker includes a power - off tube 1 of the high - voltage circuit breaker. At the top inside the power - off tube 1 of the high - voltage circuit breaker, a copper rod 2 is fixedly connected. At the bottom inside the power - off tube 1 of the high - voltage circuit breaker, a copper sleeve 3 is slidably connected. At the center of the bottom of the copper sleeve 3, a circular groove 4 is opened. At the bottom of the circular groove 4, an inflatable pipe 5 is fixedly connected. On the front and back sides of the bottom of the power - off tube 1 of the high - voltage circuit breaker, transmission rods 6 are fixedly connected. At the bottom of the power - off tube 1 of the high - voltage circuit breaker, a driving part 7 of the high - voltage circuit breaker is fixedly connected. The bottom of the transmission rod 6 is fixedly connected to the output end of the driving part 7 of the high - voltage circuit breaker.

[0027] Example 1: At the top of the copper rod 2, a first electric wire 8 is fixedly connected. At one side of the bottom of the copper sleeve 3, a second electric wire 9 is fixedly connected. The first electric wire 8 and the second electric wire 9 are respectively electrically connected to the high - voltage circuit. The length allowance of the second electric wire 9 inside the power - off tube 1 of the high - voltage circuit breaker is greater than the sliding stroke of the copper sleeve 3. By arranging a fixed copper rod 2 and a sliding copper sleeve 3 inside the power - off tube 1 of the high - voltage circuit breaker, the sliding of the copper sleeve 3 is used to control whether the two are in contact and docked, so as to control the on - off state of the high - voltage circuit breaker. By restricting the length of the second electric wire 9, the electrical connection between the two can be maintained during the sliding of the copper sleeve 3, avoiding the situation of poor electrical contact caused by the sliding of the copper sleeve.

[0028] Example 2: The diameter of the copper rod 2 is adapted to the inner diameter of the copper sleeve 3. The sliding stroke of the copper sleeve 3 inside the power - off tube 1 of the high - voltage circuit breaker is greater than the length of the contact surface between the copper rod 2 and the copper sleeve 3. By restricting the diameter and sliding stroke of the copper rod 2 and the copper sleeve 3, etc., when the copper sleeve 3 slides upward, the two can be in contact and conduct electricity to keep the high - voltage circuit energized. When the copper sleeve 3 slides downward under the action of the driving part, the contact state between the two can be released, so that the high - voltage circuit can be quickly powered off.

[0029] Example 3: One end of the inflatable pipe 5 passes through the power - off tube 1 of the high - voltage circuit breaker and is located outside it. The end of the inflatable pipe 5 is threadedly connected with an end cap 10. By arranging an inflatable pipe 5 communicated with the outside at the bottom of the copper sleeve 3, usually the end of the inflatable pipe 5 is closed by the end cap 10, so that sulfur hexafluoride gas is stored in the space between the copper sleeve 3 and the copper rod 2. When the high - voltage circuit breaker is powered off, the sulfur hexafluoride gas filled inside is consumed to consume the arc generated when the copper rod 2 and the copper sleeve 3 are powered off. Then the end cap 10 can be opened to discharge substances such as sulfur fluoride and oxygen generated by arc extinguishing inside the copper sleeve 3, and then new sulfur hexafluoride can be poured into the inflatable pipe 5 to improve the purity of sulfur hexafluoride inside the power - off tube 1 of the high - voltage circuit breaker, avoiding the situation that the products of sulfur hexafluoride during the arc - extinguishing process affect the subsequent arc - extinguishing effect.

[0030] Example 4: Both the inflatable pipe 5 and the end cap 10 are made of insulating materials. The inflatable pipe 5 is a telescopic pipe, and the telescopic length of the inflatable pipe 5 is greater than the sliding stroke of the copper sleeve 3.

[0031] Example 5: The inside of the power-off pipe 1 of the high-voltage circuit breaker is in a closed state. The inner diameter of the power-off pipe 1 of the high-voltage circuit breaker is adapted to the diameter of the copper sleeve 3, and the friction coefficient between the inner wall of the power-off pipe 1 of the high-voltage circuit breaker and the copper sleeve 3 is less than 0.5.

[0032] Example 6: The length of the transmission rod 6 is adapted to the output stroke of the driving part 7 of the high-voltage circuit breaker. In the normal state, the output end of the driving part 7 of the high-voltage circuit breaker is in an extended state, and after receiving the power-off signal, the output end of the driving part 7 of the high-voltage circuit breaker contracts.

[0033] The working principle of the present utility model is as follows:

[0034] S1. A fixed copper rod 2 and a sliding copper sleeve 3 are arranged inside the power-off pipe 1 of the high-voltage circuit breaker. The sliding of the copper sleeve 3 is used to control whether the two are in contact and docked, so as to control the on-off state of the high-voltage circuit breaker. The length of the second wire 9 is limited so that the copper sleeve 3 can maintain electrical connection between the two during the sliding process, avoiding the situation of poor electrical contact caused by the sliding of the copper sleeve.

[0035] S2. When the high-voltage circuit breaker is powered off, the sulfur hexafluoride gas filled inside is consumed to consume the arc generated when the copper rod 2 and the copper sleeve 3 are powered off. Then, the end cap 10 can be opened to discharge substances such as sulfur fluoride and oxygen generated by arc extinguishing inside the copper sleeve 3, and then new sulfur hexafluoride is poured in through the inflatable pipe 5 to improve the purity of sulfur hexafluoride inside the power-off pipe 1 of the high-voltage circuit breaker, avoiding the situation that the products of sulfur hexafluoride during the arc extinguishing process affect the subsequent arc extinguishing effect.

[0036] Compared with the prior art, the present utility model has the following beneficial effects compared with the prior art:

[0037] 1. The high-voltage circuit breaker uses a stable transmission structure. By arranging a fixed copper rod 2 and a sliding copper sleeve 3 inside the power-off pipe 1 of the high-voltage circuit breaker, the sliding of the copper sleeve 3 is used to control whether the two are in contact and docked, so as to control the on-off state of the high-voltage circuit breaker. The length of the second wire 9 is limited so that the copper sleeve 3 can maintain electrical connection between the two during the sliding process, avoiding the situation of poor electrical contact caused by the sliding of the copper sleeve.

[0038] 2. The high-voltage circuit breaker uses a stable transmission structure. By restricting the diameter sliding stroke of the copper rod 2 and the copper sleeve 3, etc., when the copper sleeve 3 slides upward, the two can be in contact and energized to keep the high-voltage circuit energized. When the copper sleeve 3 slides downward under the action of the driving part, the contact state between the two can be released, so that the high-voltage circuit is quickly powered off.

[0039] 3. For the stable transmission structure used in this high-voltage circuit breaker, an air-filled pipe 5 communicating with the outside is provided at the bottom of the copper sleeve 3. Usually, the end of the air-filled pipe 5 is closed by an end cap 10, so that sulfur hexafluoride gas is stored in the space between the copper sleeve 3 and the copper rod 2. When the high-voltage circuit breaker is powered off, the sulfur hexafluoride gas filled inside is consumed to dissipate the arc generated when the copper rod 2 and the copper sleeve 3 are powered off. Then, the end cap 10 can be opened to discharge substances such as sulfur fluoride and oxygen generated by arc extinguishing inside the copper sleeve 3, and new sulfur hexafluoride is poured in from the air-filled pipe 5 to improve the purity of sulfur hexafluoride inside the power-off pipe 1 of the high-voltage circuit breaker, avoiding the situation that the products of sulfur hexafluoride during the arc extinguishing process affect the subsequent arc extinguishing effect.

Claims

1. A stable transmission structure for a high-voltage circuit breaker, characterized in that: It includes a high-voltage circuit breaker power-off tube (1). At the top inside the high-voltage circuit breaker power-off tube (1), a copper rod (2) is fixedly connected. At the bottom inside the high-voltage circuit breaker power-off tube (1), a copper sleeve (3) is slidably connected. At the center of the bottom of the copper sleeve (3), a circular groove (4) is opened. At the bottom of the circular groove (4), an inflation pipeline (5) is fixedly connected. On the front and rear sides of the bottom of the high-voltage circuit breaker power-off tube (1), a transmission rod (6) is fixedly connected. At the bottom of the high-voltage circuit breaker power-off tube (1), a high-voltage circuit breaker driving part (7) is fixedly connected. The bottom of the transmission rod (6) is fixedly connected to the output end of the high-voltage circuit breaker driving part (7).

2. The stable transmission structure for a high-voltage circuit breaker according to claim 1, wherein: At the top of the copper rod (2), a first electric wire (8) is fixedly connected. At one side of the bottom of the copper sleeve (3), a second electric wire (9) is fixedly connected. The first electric wire (8) and the second electric wire (9) are respectively electrically connected to the high-voltage circuit. The length allowance of the second electric wire (9) inside the high-voltage circuit breaker power-off tube (1) is greater than the sliding stroke of the copper sleeve (3).

3. The stable transmission structure for a high-voltage circuit breaker according to claim 2, wherein: The diameter of the copper rod (2) is adapted to the inner diameter of the copper sleeve (3). The sliding stroke of the copper sleeve (3) inside the high-voltage circuit breaker power-off tube (1) is greater than the length of the contact surface between the copper rod (2) and the copper sleeve (3).

4. A stable transmission structure for a high-voltage circuit breaker according to claim 3, characterized in that: One end of the inflation pipeline (5) passes through the high-voltage circuit breaker power-off tube (1) and is located outside it. The end of the inflation pipeline (5) is threadedly connected with an end cap (10).

5. The stable transmission structure for a high-voltage circuit breaker according to claim 4, characterized in that: Both the inflation pipeline (5) and the end cap (10) are made of insulating materials. The inflation pipeline (5) is a telescopic tube. The telescopic length of the inflation pipeline (5) is greater than the sliding stroke of the copper sleeve (3).

6. The stable transmission structure for a high-voltage circuit breaker according to claim 5, wherein: The inside of the high-voltage circuit breaker power-off tube (1) is in a closed state. The inner diameter of the high-voltage circuit breaker power-off tube (1) is adapted to the diameter of the copper sleeve (3). The friction coefficient between the inner wall of the high-voltage circuit breaker power-off tube (1) and the copper sleeve (3) is less than 0.

5.

7. A stable transmission structure for a high-voltage circuit breaker according to claim 6, characterized in that: The length of the transmission rod (6) is adapted to the output stroke of the high-voltage circuit breaker driving part (7). In the normal state, the output end of the high-voltage circuit breaker driving part (7) is in an extended state. After receiving a power-off signal, the output end of the high-voltage circuit breaker driving part (7) contracts.

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