Circuit breaker switch

Abstract

The invention relates to switch equipment, in particular to a circuit breaker switch which comprises an isolation mechanism and a circuit breaker mechanism, the circuit breaker mechanism comprises a circuit breaker main shaft, a circuit breaker main shaft support, a pull rod shaft, a vacuum bubble and a vacuum bubble insulation sleeve, and the vacuum bubble insulation sleeve is arranged outside the vacuum bubble in a sleeving mode. The circuit breaker main shaft is connected with the circuit breaker main shaft support, one end of the pull rod shaft is connected with the circuit breaker main shaft support, the other end of the pull rod shaft extends into the vacuum bubble and is connected with a moving contact in the vacuum bubble, the circuit breaker main shaft support is located on the upper portion, and the vacuum bubble is located on the lower portion. The circuit breaker switch is smaller in size and better in insulation performance.

Description

Technical Field

[0001] The present invention relates to a switch device, in particular to a circuit breaker switch. Background Art

[0002] At present, the existing 12KV environmentally friendly gas upper isolation three-position circuit breaker cabinet generally adopts SF6 gas or vacuum interrupter. When using SF6 gas for arc extinguishing, SF6 gas is a greenhouse gas and causes greater environmental pollution. When using conventional vacuum interrupter for arc extinguishing, there are problems such as complex internal structure of the switch, large product size and high cost. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a circuit breaker switch which is more miniaturized and has better insulation performance.

[0004] In order to solve the above technical problems, this application provides the following technical solutions:

[0005] The present invention provides a circuit breaker switch, comprising an isolation mechanism and a circuit breaker mechanism. The circuit breaker mechanism comprises a circuit breaker main shaft, a circuit breaker main shaft bracket, a pull rod shaft, a vacuum bubble, and a vacuum bubble insulating sleeve. The vacuum bubble insulating sleeve is sleeved outside the vacuum bubble. The circuit breaker main shaft is connected to the circuit breaker main shaft bracket. One end of the pull rod shaft is connected to the circuit breaker main shaft bracket. The other end of the pull rod shaft extends into the vacuum bubble and is connected to a moving contact in the vacuum bubble. The circuit breaker main shaft bracket is located above and the vacuum bubble is located below.

[0006] Furthermore, the circuit breaker mechanism also includes a vacuum bubble support frame, a bracket support plate, and a main body insulating member. The vacuum bubble support frame and the bracket support plate are both made of insulating material. The static contact in the vacuum bubble is connected to the top of the main body insulating member, the middle part of the vacuum bubble insulating sleeve is connected to the vacuum bubble support frame, and the bottom of the vacuum bubble insulating sleeve is connected to one of the main body insulating members and is sleeved on the outside of the static contact in the vacuum bubble. The bracket support plate is provided with two pieces, and the bracket support plate is connected to the circuit breaker main shaft bracket. The two bracket support plates are respectively located on both sides of the circuit breaker main shaft bracket.

[0007] Furthermore, the isolation mechanism includes an isolation main shaft, an isolation knife, a grounding contact, a busbar support, an isolation moving contact, an isolation static contact, and an isolation bracket. The isolation main shaft, the busbar support, and the isolation bracket are all made of insulating materials. The busbar support is connected to the isolation bracket. The isolation moving contact and the grounding contact are both connected to the busbar support. The isolation knife is connected to the isolation main shaft. The isolation main shaft drives the isolation knife to rotate so that the isolation knife contacts or disconnects with the isolation moving contact and contacts or disconnects with the grounding contact. The isolation static contact is hinged to one end of the isolation knife.

[0008] Furthermore, the isolation main shaft is in the shape of a hollow shell, and the isolation knife passes through the hollow cavity of the isolation main shaft and partially extends out of the isolation main shaft.

[0009] Furthermore, it also includes an isolation knife mounting plate, which is arranged between the two blades of the isolation knife. A reinforcing rib support ear is provided on the isolation main shaft, and the isolation knife mounting plate extends into the reinforcing rib support ear. The connecting piece passes through the reinforcing rib support ear and the isolation knife mounting plate to connect the isolation knife to the isolation main shaft.

[0010] Furthermore, the circuit breaker mechanism further comprises a flexible connection, one end of which is connected to the vacuum bubble, and the other end of which is connected to the isolating static contact.

[0011] Furthermore, the busbar support is provided with reinforcing ribs, and the reinforcing ribs are arranged close to the isolating moving contact.

[0012] Furthermore, the switches are three-phase switches, and the three-phase switches are arranged in sequence from front to back.

[0013] Furthermore, the isolation main shaft, the vacuum bubble insulation sleeve, the vacuum bubble support frame, the bracket support plate, the body insulation member, and the busbar support are all made of polycarbonate material.

[0014] Furthermore, reinforcing ribs are provided on the bracket support plate, the isolation main shaft, the vacuum bubble support frame, and the main body insulating member.

[0015] Compared with the prior art, the circuit breaker switch of the present invention has at least the following beneficial effects:

[0016] The present invention provides a circuit breaker switch. Since the circuit breaker main shaft support is located at the top and the vacuum bubble is located at the bottom, the circuit breaker switch of the present invention is miniaturized, the cabinet size of the switch cabinet is reduced, the overall assembly of the circuit breaker switch is more coordinated, and the vacuum bubble insulation sleeve is sleeved outside the vacuum bubble, so that the insulation performance of the circuit breaker mechanism is better.

[0017] The circuit breaker switch of the present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the circuit breaker switch of the present invention;

[0019] Figure 2 This is a schematic diagram of the main structure of the circuit breaker switch of the present invention with the housing removed;

[0020] Figure 3 This is a schematic diagram of the rear view structure of the circuit breaker switch of the present invention with the housing removed;

[0021] Figure 4 This is a schematic diagram of the top view of the circuit breaker switch of the present invention with the housing removed;

[0022] Figure 5 This is a bottom view of the structure of the circuit breaker switch of the present invention with the housing removed;

[0023] Figure 6 It is a structural schematic diagram of the circuit breaker mechanism in the circuit breaker switch of the present invention;

[0024] Figure 7 This is a front view of the assembly of the isolating main shaft and the isolating knife in the circuit breaker switch of the present invention;

[0025] Figure 8 It is a left side view of the assembly of the isolating main shaft and the isolating knife in the circuit breaker switch of the present invention;

[0026] Figure 9 This is a schematic diagram of the main structure of the installation of the isolating knife in the circuit breaker switch of the present invention;

[0027] Figure 10 This is a bottom view of the structure of the isolating knife installed in the circuit breaker switch of the present invention;

[0028] Figure 11 It is a structural schematic diagram of the isolation bracket in the circuit breaker switch of the present invention;

[0029] Figure 12 Schematic diagram of the structure of the operating unit in the circuit breaker switch of the present invention;

[0030] Figure 13 This is a schematic diagram of the main partial structure of the circuit breaker switch of the present invention. DETAILED DESCRIPTION

[0031] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6As shown, a circuit breaker switch of the present invention includes an isolation mechanism 01 and a circuit breaker mechanism 02. The circuit breaker mechanism 02 includes a circuit breaker main shaft 21, a circuit breaker main shaft support 22, a pull rod shaft 23, a vacuum bubble 24, and a vacuum bubble insulating sleeve 25. The vacuum bubble insulating sleeve 25 is sleeved on the outside of the vacuum bubble 24. The circuit breaker main shaft 21 is connected to the circuit breaker main shaft support 22. One end of the pull rod shaft 23 is connected to the circuit breaker main shaft support 22. The other end of the pull rod shaft 23 extends into the vacuum bubble 24 and connects to the moving contact in the vacuum bubble 24. The circuit breaker main shaft support 22 is located at the top and the vacuum bubble 24 is located at the bottom. Specifically, it also includes a pull rod shaft guide sleeve 231. The pull rod shaft guide sleeve 231 is vertically arranged and connected to the circuit breaker main shaft support 22. The pull rod shaft 23 passes through the pull rod shaft guide sleeve 231. The pull rod shaft guide sleeve 231 prevents the pull rod shaft 23 from deviating during the up and down movement. The circuit breaker main shaft support 22 is connected to the circuit breaker main shaft 21, which is connected to the circuit breaker main shaft lead-out shaft 20. When the circuit breaker mechanism 02 is actuated, the circuit breaker main shaft lead-out shaft 20 rotates clockwise, causing the circuit breaker main shaft 21 to rotate clockwise. The clockwise rotation of the circuit breaker main shaft 21 causes the circuit breaker main shaft support 22 to move downward. The downward movement of the circuit breaker main shaft support 22 causes the pull rod shaft 23 to move downward, closing the circuit breaker mechanism 02. The circuit breaker switch of the present invention is miniaturized because the circuit breaker main shaft support 22 is located above and the vacuum bubble 24 is located below. This reduces the size of the switch cabinet and makes the overall assembly of the circuit breaker switch more coordinated. In addition, the vacuum bubble insulation sleeve 25 is sleeved outside the vacuum bubble 24, improving the insulation performance of the circuit breaker mechanism.

[0032] Optionally, the vacuum bubble insulation sleeve 25 is cylindrical. Specifically, the vacuum bubble insulation sleeve 25 is made of polycarbonate material and is hollowed into a cylindrical shape.

[0033] Alternatively, as Figure 1 、 Figure 2 、 Figure 3 As shown, the circuit breaker mechanism 02 further includes a vacuum bubble support frame 26, a support plate 27, and a body insulating member 28. These are all made of insulating material. The static contact within the vacuum bubble 24 is connected to the top of the body insulating member 28. The middle portion of the vacuum bubble insulating sleeve 25 is connected to the vacuum bubble support frame 26. The bottom of the vacuum bubble insulating sleeve 25 is connected to one of the body insulating members 28 and fits over the static contact within the vacuum bubble 24. The support plate 27 comprises two pieces, which are connected to the circuit breaker main shaft support 22 and are located on either side of the circuit breaker main shaft support 22. Because the vacuum bubble support frame 26, support plate 27, and body insulating member 28 are all made of insulating material and supported integrally by the insulating member, the insulation spacing is reduced, further miniaturizing the circuit breaker switch of the present invention.

[0034] Alternatively, as Figure 1 、 Figure 2 、 Figure 11 As shown, the isolation mechanism 01 includes an isolation main shaft 11, an isolation knife 12, a grounding contact 13, a busbar support 14, an isolation moving contact 15, an isolation static contact 16, and an isolation bracket 17. The isolation main shaft 11, the busbar support 14, and the isolation bracket 17 are all made of insulating materials. The isolation bracket 17 is provided with an isolation bracket tie rod 171. The busbar support 14 is connected to the isolation bracket 17. The isolation moving contact 15 and the grounding contact 13 are both connected to the busbar support 14. The isolation knife 12 is connected to the isolation main shaft 11. The isolation main shaft 11 drives the isolation knife 12 to rotate so that the isolation knife 12 contacts or disconnects with the isolation moving contact 15 and contacts or disconnects with the grounding contact 13. The isolation static contact 16 is hinged to one end of the isolation knife 12. The isolation main shaft 11 is connected to the isolation main shaft lead-out shaft 110. When the isolation mechanism 01 is in operation, the isolation main shaft lead-out shaft 110 is driven to rotate by the operating handle, thereby rotating the isolation main shaft 11.

[0035] Alternatively, as Figure 7 、 Figure 8 As shown, the isolation main shaft 11 is in the shape of a hollow shell, and the isolation knife 12 passes through the hollow cavity of the isolation main shaft 11 and partially extends out of the isolation main shaft 11. Specifically, the isolation main shaft 11 adopts a draw-out shell design. Since the isolation main shaft 11 is made of insulating material and the isolation knife 12 passes through the hollow cavity of the isolation main shaft 11, the isolation knife 12 is wrapped in the isolation main shaft 11, which greatly improves the safe insulation distance of the circuit breaker switch of the present invention and improves the safety performance. At the same time, the isolation main shaft 11 is in the shape of a hollow shell with an integral design, which facilitates the pre-installation of the isolation knife 12 and the isolation main shaft 11, facilitates the later assembly, and is more convenient and labor-saving during the later assembly.

[0036] Alternatively, as Figure 9 、 Figure 10 As shown, the isolating blade mounting plate 121 is further included. The isolating blade mounting plate 121 is disposed between the two blades of the isolating blade 12. A reinforcing rib support ear 111 is provided on the isolating spindle 11. The isolating blade mounting plate 121 extends into the reinforcing rib support ear 111. A connecting piece passes through the reinforcing rib support ear 111 and the isolating blade mounting plate 121 to connect the isolating blade 12 to the isolating spindle 11. Specifically, the reinforcing rib support ear 111 and the isolating blade mounting plate 121 are respectively provided with connecting holes. The connecting piece passes through the connecting hole 112 on the reinforcing rib support ear 111 and the connecting hole 122 on the isolating blade mounting plate 121.

[0037] Optionally, the circuit breaker mechanism 02 further includes a soft connection 29, one end of the soft connection 29 is connected to the pull rod shaft 23, and the other end is connected to the isolating static contact 16, an arc extinguishing chamber upper gasket 232 is arranged between the soft connection 29 and the pull rod shaft 23, and the soft connection 29 is covered with a soft connection sleeve 291.

[0038] Alternatively, as Figure 11 As shown, the busbar support 14 is provided with reinforcing ribs 141, which are arranged near the isolating movable contact 15. The reinforcing ribs 141 are arranged from a position away from the isolating movable contact 15 to a position close to the isolating movable contact 15, thereby reinforcing the insulation of the isolating movable contact 15 and increasing the insulation distance of the isolating movable contact 15. At the same time, the busbar support 14 forms a lap plate between the isolating movable contact 15 and the grounding static contact, ensuring better insulation, thereby ensuring the safety of the circuit breaker switch while reducing the cabinet size.

[0039] Optionally, the circuit breaker switch of the present invention is a three-phase switch, and the three-phase switches are arranged in sequence from front to back, thereby reducing the width of the entire circuit breaker switch cabinet while ensuring the insulation distance.

[0040] Optionally, the isolation spindle 11, vacuum bubble insulation sleeve 25, vacuum bubble support frame 26, bracket support plate 27, main body insulation part 28, and busbar support 14 are all made of insulating material polycarbonate. The design of the boss, reinforcement rib, empty shell, etc. of the parts is completed through three-dimensional modeling using draft, shell, rib and other commands. Insulating material is used as a support part to reduce the insulation spacing, so that the circuit breaker switch of the present invention is further miniaturized.

[0041] Alternatively, as Figure 3 As shown, the bracket support plate 27 and the isolation main shaft 11 are provided with reinforcing ribs 271 and 113, and the vacuum bubble support frame 26 and the main body insulating member 28 are provided with reinforcing ribs. By providing the reinforcing ribs, the strength of the above components is increased to ensure the transmission function, and the insulation distance is increased, so that the circuit breaker switch of the present invention is safer.

[0042] like Figure 12 、 13As shown, when the circuit breaker switch of the present invention is powered on, the circuit breaker mechanism 02 is assembled with the circuit breaker main shaft lead-out shaft 20, the isolation mechanism 01 is matched with the isolation main shaft lead-out shaft 110, the operating handle is inserted into the grounding operating hole 31 on the isolation mechanism 01, and the operating handle is rotated clockwise to perform grounding. The operating handle drives the isolation main shaft 11 to rotate through the isolation main shaft lead-out shaft 110, and the isolation main shaft 11 drives the isolation knife 12 to rotate, so that the isolation knife 12 is separated from the grounding contact 13, and the isolation knife 12 is rotated to the grounding position; the operating handle is inserted into the isolation operating hole 32 on the isolation mechanism 01, and the operating handle is rotated clockwise. The operating handle drives the isolation main shaft 11 to rotate through the isolation main shaft lead-out shaft 110, so that the isolation knife 12 contacts the isolation moving contact 15, and the isolation knife 12 is rotated to the isolation closing position. Position; insert the operating handle into the energy storage operating hole 33 on the circuit breaker mechanism 02, turn the operating handle clockwise until the energy storage spring 34 moves upward to complete the energy storage (a click sound indicates that the energy storage is completed), and after the energy storage is completed, press the closing knob 35 clockwise to close the circuit breaker closing coil 36, and the output shaft 37 pushes the output shaft connecting plate 38 upward to move upward, and the output shaft connecting plate 38 pushes the main shaft crank arm 39 upward to rotate clockwise, and the main shaft crank arm 39 rotates clockwise to rotate the circuit breaker main shaft lead-out shaft 20 clockwise, and the circuit breaker main shaft lead-out shaft 20 rotates clockwise to rotate the circuit breaker main shaft 21 clockwise, and the circuit breaker main shaft 21 rotates clockwise to move the circuit breaker main shaft bracket 22 downward, and the circuit breaker main shaft bracket 22 moves downward to move the pull rod shaft 23 downward, closing the vacuum interrupter. Through the cooperation of the operating mechanism and the transmission, the circuit breaker switch of the present invention meets the requirements of closing the isolation first and then closing the vacuum interrupter;

[0043] During a power outage, first rotate the trip button 41 on the circuit breaker mechanism 02 counterclockwise, causing the circuit breaker trip coil 42 and trip spring 43 to move downward to release energy, driving the main shaft crank arm 39 to rotate counterclockwise, causing the circuit breaker main shaft lead-out shaft 20 to rotate counterclockwise. The circuit breaker main shaft lead-out shaft 20 rotates counterclockwise, causing the circuit breaker main shaft 21 to rotate counterclockwise. The circuit breaker main shaft 21 rotates counterclockwise, causing the circuit breaker main shaft bracket 22 to move upward. The upward movement of the circuit breaker main shaft bracket 22 causes the pull rod shaft 23 to move upward, separating from the vacuum interrupter. Next, insert the operating handle into the isolation operating hole 32 on the isolation mechanism 01 and rotate the operating handle counterclockwise to isolate. Finally, insert the operating handle into the grounding operating hole 31 on the isolation mechanism 01 and rotate the operating handle counterclockwise to close the ground. Through the coordination of the operating mechanism and the transmission, the circuit breaker switch of the present invention meets the requirements of first opening the vacuum interrupter and then opening the isolation switch.

[0044] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A circuit breaker switch, characterized in that: The invention comprises an isolation mechanism (01) and a circuit breaker mechanism (02). The circuit breaker mechanism (02) comprises a circuit breaker main shaft (21), a circuit breaker main shaft support (22), a pull rod shaft (23), a vacuum bubble (24), and a vacuum bubble insulating sleeve (25). The vacuum bubble insulating sleeve (25) is sleeved outside the vacuum bubble (24). The circuit breaker main shaft (21) is connected to the circuit breaker main shaft support (22). One end of the pull rod shaft (23) is connected to the circuit breaker main shaft support (22). The other end of the pull rod shaft (23) extends into the vacuum bubble (24) and is connected to the moving contact in the vacuum bubble (24). The circuit breaker main shaft support (22) is located at the top and the vacuum bubble (24) is located at the bottom.

2. The circuit breaker switch according to claim 1, characterized in that: The circuit breaker mechanism (02) further comprises a vacuum bubble support frame (26), a bracket support plate (27), and a body insulating member (28). The vacuum bubble support frame (26) and the bracket support plate (27) are both made of insulating material. The static contact in the vacuum bubble (24) is connected to the top of the body insulating member (28). The middle of the vacuum bubble insulating sleeve (25) is connected to the vacuum bubble support frame (26). The bottom of the vacuum bubble insulating sleeve (25) is connected to one of the body insulating members (28) and is sleeved on the outside of the static contact in the vacuum bubble (24). The bracket support plate (27) is provided with two pieces. The bracket support plate (27) is connected to the circuit breaker main shaft bracket (22). The two bracket support plates (27) are respectively located on both sides of the circuit breaker main shaft bracket (22).

3. The circuit breaker switch according to claim 2, characterized in that: The isolation mechanism (01) comprises an isolation main shaft (11), an isolation knife (12), a grounding contact (13), a busbar support (14), an isolation moving contact (15), an isolation static contact (16), and an isolation bracket (17). The isolation main shaft (11), the busbar support (14), and the isolation bracket (17) are all made of insulating materials. The busbar support (14) is connected to the isolation bracket (17). The isolation moving contact (15) and the grounding contact (13) are both connected to the busbar support (14). The isolation knife (12) is connected to the isolation main shaft (11). The isolation main shaft (11) drives the isolation knife (12) to rotate so that the isolation knife (12) contacts or disconnects with the isolation moving contact (15) and contacts or disconnects with the grounding contact (13). The isolation static contact (16) is hinged to one end of the isolation knife (12).

4. The circuit breaker switch according to claim 3, characterized in that: The isolation main shaft (11) is in the shape of a hollow shell, and the isolation knife (12) passes through the hollow cavity of the isolation main shaft (11) and partially extends out of the isolation main shaft (11).

5. The circuit breaker switch according to claim 4, characterized in that: The invention also includes an isolation knife mounting plate (121), wherein the isolation knife mounting plate (121) is arranged between the two blades of the isolation knife (12), and a reinforcing rib support ear (111) is provided on the isolation main shaft (11), and the isolation knife mounting plate (121) extends into the reinforcing rib support ear (111), and a connecting piece passes through the reinforcing rib support ear (111) and the isolation knife mounting plate (121) to connect the isolation knife (12) to the isolation main shaft (11).

6. The circuit breaker switch according to claim 5, characterized in that: The circuit breaker mechanism (02) further comprises a flexible connection (29), one end of the flexible connection (29) being connected to the vacuum bubble (24) and the other end being connected to the isolating static contact (16).

7. The circuit breaker switch according to claim 6, characterized in that: The busbar support (14) is provided with a reinforcing rib (141), and the reinforcing rib (141) is arranged close to the isolating movable contact (15).

8. The circuit breaker switch according to claim 7, characterized in that: The switches are three-phase switches, and the three-phase switches are arranged in sequence from front to back.

9. The circuit breaker switch according to claim 8, characterized in that: The isolation main shaft (11), the vacuum bubble insulation sleeve (25), the vacuum bubble support frame (26), the bracket support plate (27), the body insulation member (28), and the busbar support (14) are all made of polycarbonate material.

10. The circuit breaker switch according to claim 9, characterized in that: Reinforcement ribs are provided on the bracket support plate (27), the isolation main shaft (11), the vacuum bubble support frame (26), and the main body insulating member (28).

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