Economical ring main unit operation training tool

Abstract

The invention relates to the technical field of high-low voltage switch equipment, and discloses an economical ring main unit operation training tool which comprises a tool shell, a three-position load switch structure is arranged in the tool shell and comprises a switch opening-closing brake, a grounding opening-closing brake, a switch indication flag and a grounding indication flag, the switch opening-closing brake comprises a branch switch rotating shaft and a switch gear, and the switch gear is connected with the grounding opening-closing brake. The grounding opening and closing device comprises a grounding rotating shaft and a grounding gear, the grounding indicating flag is driven to move left and right, and an opening mark, a closing mark and a grounding mark are sequentially displayed on the indicating window along with movement of the switch indicating flag and the grounding indicating flag. The economical ring main unit operation training tool is completely consistent with a real ring main unit in the aspects of appearance, operation mode, mechanical / electrical locking logic and state indication, the manufacturing cost is remarkably reduced by simplifying the internal structure and omitting a high-pressure gas tank and a special switch module, and the economical ring main unit operation training tool is specially used for teaching and practical training scenes.

Description

Technical Field

[0001] This invention relates to the field of high and low voltage switchgear technology, and specifically to an economical ring main unit operation training tool. Background Technology

[0002] With the accelerated construction of smart grids and the advancement of the energy internet strategy, higher demands are being placed on the operational skills of frontline power workers. Existing training methods mainly rely on decommissioned equipment or brand-new ring main units: the former often suffers from functional deficiencies due to component damage, making it impossible to accurately reproduce the operational logic; the latter is costly and wasteful of resources.

[0003] Therefore, there is an urgent need for a dedicated training tool that can fully simulate the actual operation process of a ring main unit while also being low-cost and highly reliable. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the aforementioned technologies by providing an economical ring main unit operation training tool. This tool is completely identical to a real ring main unit in terms of appearance, operation method, mechanical / electrical interlocking logic, and status indication. By simplifying the internal structure and eliminating the high-pressure gas box and dedicated switch module, the manufacturing cost is significantly reduced, making it suitable for teaching and practical training scenarios.

[0005] To achieve the above objectives, the present invention designs an economical ring main unit operation training fixture, comprising a fixture housing. The fixture housing contains a three-position load switch structure, which includes a switch opening / closing mechanism, a grounding opening / closing mechanism, a switch indicator flag, and a grounding indicator flag. The fixture housing also includes an indicator window displaying the status of the three-position load switch structure, a switch operation hole for operating the switch opening / closing mechanism, and a grounding operation hole for operating the grounding opening / closing mechanism. The switch opening / closing mechanism includes a switch rotation shaft and a switch gear fixedly mounted on the switch rotation shaft. The switch gear meshes with a rack on the switch indicator flag, driving it to move up and down. The grounding opening / closing mechanism includes a ground rotation shaft and a grounding gear mounted on the ground rotation shaft. The grounding gear meshes with a rack on the grounding indicator flag, driving it to move left and right. The switch indicator flag has an opening mark and an closing mark, and the grounding indicator flag has a grounding mark. The opening mark, closing mark, and grounding mark are sequentially displayed in the indicator window as the switch indicator flag and grounding indicator flag move.

[0006] Preferably, the three-position load switch structure further includes a mechanically interlocked grounding switch structure. The mechanically interlocked grounding switch structure is located on the switch indicator flag and moves together with the switch indicator flag. When the closing indicator is displayed in the indicator window, the mechanically interlocked grounding switch structure is located in the grounding operation hole, preventing the grounding rotating shaft from rotating and preventing accidental closing of the grounding switch in the closed state.

[0007] Preferably, the three-position load switch structure further includes a mechanically interlocked load switch structure. The grounding gear meshes with a rack on the mechanically interlocked load switch structure, causing it to move up and down. When the grounding mark is displayed in the indicator window, the mechanically interlocked load switch structure is located in the switch operating hole, preventing the switch rotation shaft from rotating and preventing accidental closing in the grounding state.

[0008] Preferably, the device further includes a switch opening / closing position holding mechanism. The switch opening / closing position holding mechanism includes a switch actuating rod disposed on the switch rotating shaft, a switch closing limit rod corresponding to the closing position, a switch opening limit rod corresponding to the opening position, and a switch holding spring with one end fixed to the tooling housing and the other end fixed to a switch rotating shaft disc disposed on the switch rotating shaft. When the switch actuating rod is blocked by the switch closing limit rod or the switch opening limit rod, the switch holding spring provides tension to maintain the closing or opening state.

[0009] Preferably, the device further includes a grounding closing / opening position holding mechanism. The grounding closing / opening position holding mechanism includes a grounding action rod disposed on the grounding rotating shaft, a grounding closing limit rod corresponding to the closing position, a grounding opening limit rod corresponding to the opening position, and a grounding holding spring with one end fixed to the tool housing and the other end fixed to a grounding rotating shaft disc disposed on the grounding rotating shaft. When the grounding action rod is blocked by the grounding closing limit rod or the grounding opening limit rod, the grounding holding spring provides tension to maintain the closing or opening state.

[0010] Preferably, it further includes a switch position signal output mechanism. The switch position signal output mechanism includes a fan-shaped structure fixed on the switch rotation shaft and a coaxial disk fixedly installed on the switch rotation shaft. The fan-shaped structure is provided with a protruding rod, and the coaxial disk has an arc-shaped groove. The protruding rod is inserted into the arc-shaped groove. The coaxial disk is connected to an extension rod. The extension rod acts on the micro switch. When the switch rotation shaft is closed, the protruding rod presses down against the arc-shaped groove. When the switch rotation shaft is open, the protruding rod presses up against the arc-shaped groove, driving the coaxial disk and the extension rod to move and change the state of the micro switch.

[0011] Preferably, it further includes a grounding position signal output mechanism, which includes a fan-shaped structure fixed on the grounding rotating shaft and a coaxial disk fixedly installed on the grounding rotating shaft. The fan-shaped structure is provided with a protruding rod, and the coaxial disk has an arc-shaped groove. The protruding rod is inserted into the arc-shaped groove, and the coaxial disk is connected to an extension rod. The extension rod acts on a micro switch. When the grounding rotating shaft is closed, the protruding rod presses down against the arc-shaped groove. When the grounding rotating shaft is open, the protruding rod presses up against the arc-shaped groove, driving the coaxial disk and the extension rod to move and change the state of the micro switch.

[0012] Preferably, it also includes an electric operating mechanism, which includes a motor and a transmission gear set. The motor is linked with the switch rotating shaft and the grounding rotating shaft through the transmission gear set to realize electric opening and closing of the circuit breaker.

[0013] Preferably, it also includes a control circuit, which is divided into a circuit indicating opening and closing, a motor drive circuit, a circuit opening control circuit, and a circuit closing control circuit.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The appearance, function, and operation sequence are consistent with the actual switchgear, and it can realize manual operation, local electric operation, and background control of opening and closing. 2. The mechanism is constructed using gears and transmission rods, resulting in low cost. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the tooling housing of the economical ring main unit operation training tool of the present invention; Figure 2 This is a schematic diagram of the three-position load switch structure inside the economic ring main unit operation training tool of the present invention in a grounded state. Figure 3 for Figure 2 A schematic diagram of the circuit breaker in the open position; Figure 4 for Figure 2 A schematic diagram of the circuit breaker in the closed state; Figure 5 for Figure 2 A schematic diagram showing the switch in the closed position. Figure 6 for Figure 2 A schematic diagram showing the switch in the open position. Figure 7 for Figure 2 A schematic diagram showing the grounding switch in the closed state. Figure 8 for Figure 2Schematic diagram of the position signal output mechanism for the switching and grounding circuit breakers; Figure 9 This is a schematic diagram of the electric operation structure according to an embodiment of the present invention.

[0016] The components in the diagram are labeled as follows: Tooling housing 1, switch opening / closing 2, switch rotating shaft 21, switch actuating rod 211, switch closing limit rod 212, switch opening limit rod 213, switch rotating shaft disc 214, switch holding spring 215, switch gear 22, grounding opening / closing 3, grounding actuating rod 311, grounding closing limit rod 312, grounding opening limit rod 313, grounding rotating shaft disc 314, grounding holding spring 315, grounding rotating shaft 31, grounding gear 32, switch indicator flag 4, opening mark 41, closing mark 42, grounding indicator flag 5, grounding mark 51, indicator window 6, switch operating hole 7, grounding operating hole 8, mechanically interlocked grounding switch structure 91, mechanically interlocked load switch structure 92, sector structure 101, coaxial disc 102, protruding rod 103, arc groove 104, extension rod 105, micro switch 106, motor 107, transmission gear set 108. Detailed Implementation

[0017] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1 like Figures 1-4 As shown, an economical ring main unit operation training fixture includes a fixture housing 1. The fixture housing 1 houses a three-position load switch structure, which includes a switch opening / closing mechanism 2, a grounding opening / closing mechanism 3, a switch indicator flag 4, and a grounding indicator flag 5. The fixture housing 1 also has an indicator window 6 displaying the status of the three-position load switch structure, a switch operation hole 7 for operating the switch opening / closing mechanism 2, and a grounding operation hole 8 for operating the grounding opening / closing mechanism 3. The switch opening / closing mechanism 2 includes a switch rotating shaft 21 and a switch gear 22 fixedly mounted on the switch rotating shaft 21. The switch gear 22 meshes with the rack on the switch indicator flag 4, driving it to move up and down. The grounding switch 3 includes a grounding rotating shaft 31 and a grounding gear 32 mounted on the grounding rotating shaft 31. The grounding gear 32 meshes with the rack on the grounding indicator flag 5, driving it to move left and right. The switch indicator flag 4 is provided with a switch open mark 41 and a switch closed mark 42. The grounding indicator flag 5 is provided with a grounding mark 51. The switch open mark 41, the switch closed mark 42, and the grounding mark 51 are displayed in the indicator window 6 in sequence as the switch indicator flag 4 and the grounding indicator flag 5 move.

[0019] Example 2 like Figures 1-4 As shown, an economical ring main unit operation training fixture includes a fixture housing 1. The fixture housing 1 houses a three-position load switch structure, which includes a switch opening / closing mechanism 2, a grounding opening / closing mechanism 3, a switch indicator flag 4, and a grounding indicator flag 5. The fixture housing 1 also has an indicator window 6 displaying the status of the three-position load switch structure, a switch operation hole 7 for operating the switch opening / closing mechanism 2, and a grounding operation hole 8 for operating the grounding opening / closing mechanism 3. The switch opening / closing mechanism 2 includes a switch rotating shaft 21 and a switch gear 22 fixedly mounted on the switch rotating shaft 21. The switch gear 22 meshes with the rack on the switch indicator flag 4, driving it to move up and down. The grounding switch 3 includes a grounding rotating shaft 31 and a grounding gear 32 mounted on the grounding rotating shaft 31. The grounding gear 32 meshes with the rack on the grounding indicator flag 5, driving it to move left and right. The switch indicator flag 4 is provided with a switch open mark 41 and a switch closed mark 42. The grounding indicator flag 5 is provided with a grounding mark 51. The switch open mark 41, the switch closed mark 42, and the grounding mark 51 are displayed in the indicator window 6 in sequence as the switch indicator flag 4 and the grounding indicator flag 5 move.

[0020] The three-position load switch structure also includes a mechanically locked grounding switch structure 91 and a mechanically locked load switch structure 92. The mechanically locked grounding switch structure 91 is located on the switch indicator flag 4 and moves together with the switch indicator flag 4. When the closing mark 52 is displayed in the indicator window 6, the mechanically locked grounding switch structure 91 is located in the grounding operation hole 8, preventing the grounding rotating shaft 31 from rotating. For the mechanically locked load switch structure 92, the grounding gear 32 meshes with the rack on the mechanically locked load switch structure 92, driving it to move up and down. When the grounding mark 51 is displayed in the indicator window 6, the mechanically locked load switch structure 92 is located in the switch operation hole 7, preventing the switch rotating shaft 21 from rotating.

[0021] Example 3 like Figures 1-4As shown, an economical ring main unit operation training fixture includes a fixture housing 1. The fixture housing 1 houses a three-position load switch structure, which includes a switch opening / closing mechanism 2, a grounding opening / closing mechanism 3, a switch indicator flag 4, and a grounding indicator flag 5. The fixture housing 1 also has an indicator window 6 displaying the status of the three-position load switch structure, a switch operation hole 7 for operating the switch opening / closing mechanism 2, and a grounding operation hole 8 for operating the grounding opening / closing mechanism 3. The switch opening / closing mechanism 2 includes a switch rotating shaft 21 and a switch gear 22 fixedly mounted on the switch rotating shaft 21. The switch gear 22 meshes with the rack on the switch indicator flag 4, driving it to move up and down. The grounding switch 3 includes a grounding rotating shaft 31 and a grounding gear 32 mounted on the grounding rotating shaft 31. The grounding gear 32 meshes with the rack on the grounding indicator flag 5, driving it to move left and right. The switch indicator flag 4 is provided with a switch open mark 41 and a switch closed mark 42. The grounding indicator flag 5 is provided with a grounding mark 51. The switch open mark 41, the switch closed mark 42, and the grounding mark 51 are displayed in the indicator window 6 in sequence as the switch indicator flag 4 and the grounding indicator flag 5 move.

[0022] The three-position load switch structure also includes a mechanically locked grounding switch structure 91 and a mechanically locked load switch structure 92. The mechanically locked grounding switch structure 91 is located on the switch indicator flag 4 and moves together with the switch indicator flag 4. When the closing mark 52 is displayed in the indicator window 6, the mechanically locked grounding switch structure 91 is located in the grounding operation hole 8, preventing the grounding rotating shaft 31 from rotating. For the mechanically locked load switch structure 92, the grounding gear 32 meshes with the rack on the mechanically locked load switch structure 92, driving it to move up and down. When the grounding mark 51 is displayed in the indicator window 6, the mechanically locked load switch structure 92 is located in the switch operation hole 7, preventing the switch rotating shaft 21 from rotating.

[0023] In this embodiment, combined with Figures 5-7 As shown, it also includes a switch opening / closing position holding mechanism and a grounding opening / closing position holding mechanism. The switch opening / closing position holding mechanism includes a switch action rod 211 mounted on the switch rotation shaft 21, a switch closing limit rod 212 corresponding to the closing position, a switch opening limit rod 213 corresponding to the opening position, and a switch holding spring 215 with one end fixed to the tool housing 1 and the other end fixed to the switch rotation shaft disc 214 mounted on the switch rotation shaft 21. The grounding opening / closing position holding mechanism includes a grounding action rod 311 mounted on the grounding rotation shaft 31, a grounding closing limit rod 312 corresponding to the closing position, a grounding opening limit rod 313 corresponding to the opening position, and a grounding holding spring 315 with one end fixed to the tool housing 1 and the other end fixed to the grounding rotation shaft disc 314 mounted on the grounding rotation shaft 31.

[0024] In use, when the switch action rod 211 is blocked by the switch closing limit rod 212 or the switch opening limit rod 213, the switch holding spring 315 provides tension to maintain the closed or open state. Similarly, when the grounding action rod 311 is blocked by the grounding closing limit rod 312 or the grounding opening limit rod 313, the grounding holding spring 315 provides tension to maintain the closed or open state.

[0025] In addition, combined Figure 8 As shown, the above embodiment also includes a switch position signal output mechanism and a grounding position signal output mechanism. The switch position signal output mechanism includes a sector-shaped structure 101 fixed on the switch rotation shaft 21 and a coaxial disk 102 fixedly installed on the switch rotation shaft 21. The sector-shaped structure 101 is provided with a protruding rod 103, and the coaxial disk 102 is provided with an arc-shaped groove 104. The protruding rod 103 is inserted into the arc-shaped groove 104. The coaxial disk 102 is connected to an extension rod 105. The extension rod 105 acts on the micro switch 106. When the switch rotation shaft 21 is closed, the protruding rod 103 presses down on the arc-shaped groove 104. When the switch rotation shaft 21 is open, the protruding rod 103 presses up on the arc-shaped groove 104, driving the coaxial disk 102 and the extension rod 105. The movement of 05 causes the micro switch 106 to change state; the grounding position signal output mechanism includes a fan-shaped structure 101 fixed on the grounding rotating shaft 31 and a coaxial disk 102 fixedly installed on the grounding rotating shaft 31. The fan-shaped structure 101 is provided with a protruding rod 103, and the coaxial disk 102 is provided with an arc-shaped groove 104. The protruding rod 103 is inserted into the arc-shaped groove 104. The coaxial disk 102 is connected to an extension rod 105. The extension rod 105 acts on the micro switch 106. When the grounding rotating shaft 31 is closed, the protruding rod 103 presses down on the arc-shaped groove 104. When the grounding rotating shaft 31 is open, the protruding rod 103 presses up on the arc-shaped groove 104, driving the coaxial disk 102 and the extension rod 105 to move and causing the micro switch 106 to change state.

[0026] The switch position signal output mechanism and the ground position signal output mechanism ensure that the output switch position signal remains unchanged during the opening and closing process. The micro switch 106 will only change its state after the switch position is reached.

[0027] Combination Figure 9 As shown, for ease of operation, an electric operating mechanism may also be included. The electric operating mechanism includes a motor 107 and a transmission gear set 108. The motor 107 is linked with the switch rotating shaft 21 and the grounding rotating shaft 31 through the transmission gear set 108 to realize electric opening and closing of the circuit breaker.

[0028] As shown in the figure, it can also include a control circuit, which is divided into a closing / opening indication circuit, a motor drive circuit, a closing control circuit, and a closing control circuit. The closing button S1 controls the closing of relay K2, causing motor M1 to rotate forward and the load switch to close. The closing button S2 controls the closing of relay K1, causing motor M1 to rotate in reverse and the load switch to open. Micro-switches S7 and S10 are added for interlocking to ensure electrical interlocking. The motor circuit is de-energized after the closing / opening is complete. A remote-to-local transfer switch GN1 is designed to enable both local operation and remote control.

[0029] It should be noted that the above description of the technical solutions is exemplary, and this specification may be embodied in different forms and should not be construed as limiting it to the technical solutions set forth herein. Rather, providing these descriptions will ensure that the disclosure of this invention is thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solutions of this invention are defined only by the scope of the claims.

[0030] The shapes, dimensions, ratios, angles, and figures disclosed in the description of various aspects of this specification and claims are merely examples, and therefore, this specification and claims are not limited to the details shown. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it would be determined that they unnecessarily obscure the focus of this specification and claims.

[0031] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and many variations are possible. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention should be considered within the protection scope of the present invention.

Claims

1. An economical ring main unit operation training fixture, comprising a fixture housing (1), characterized in that: The fixture housing (1) is provided with a three-position load switch structure, which includes a switch opening / closing (2), a grounding opening / closing (3), a switch indicator flag (4), and a grounding indicator flag (5). The fixture housing (1) is also provided with an indicator window (6) for displaying the status of the three-position load switch structure, a switch operation hole (7) for operating the switch opening / closing (2), and a grounding operation hole (8) for operating the grounding opening / closing (3). The switch opening / closing (2) includes a switch rotating shaft (21) and a switch gear (22) fixedly installed on the switch rotating shaft (21). The switch gear (22) is connected to the switch indicator flag (5). The rack on the flag (4) meshes, causing it to move up and down. The grounding switch (3) includes a grounding rotating shaft (31) and a grounding gear (32) mounted on the grounding rotating shaft (31). The grounding gear (32) meshes with the rack on the grounding indicator flag (5), causing it to move left and right. The switch indicator flag (4) is provided with a switch open mark (41) and a switch closed mark (42). The grounding indicator flag (5) is provided with a grounding mark (51). The switch open mark (41), the switch closed mark (42), and the grounding mark (51) are displayed in the indicator window (6) in sequence as the switch indicator flag (4) and the grounding indicator flag (5) move.

2. The economical ring main unit operation training tool as described in claim 1, characterized in that: The three-position load switch structure also includes a mechanically locked grounding switch structure (91). The mechanically locked grounding switch structure (91) is located on the switch indicator flag (4) and moves together with the switch indicator flag (4). When the closing mark (52) is displayed in the indicator window (6), the mechanically locked grounding switch structure (91) is located in the grounding operation hole (8) to prevent the grounding rotating shaft (31) from rotating.

3. The economical ring main unit operation training tool as described in claim 1, characterized in that: The three-position load switch structure also includes a mechanically locked load switch structure (92). The grounding gear (32) meshes with the rack on the mechanically locked load switch structure (92) and drives it to move up and down. When the grounding mark (51) is displayed in the indicator window (6), the mechanically locked load switch structure (92) is located in the switch operation hole (7) and prevents the switch rotation shaft (21) from rotating.

4. The economical ring main unit operation training tool as described in claim 1, characterized in that: It also includes a switch opening and closing position holding mechanism, which includes a switch action rod (211) provided on the switch rotation shaft (21), a switch closing limit rod (212) corresponding to the closing position, a switch opening limit rod (213) corresponding to the opening position, and a switch holding spring (215) with one end fixed to the tool housing (1) and the other end fixed to the switch rotation shaft disc (214) provided on the switch rotation shaft (21).

5. The economical ring main unit operation training tool as described in claim 1, characterized in that: It also includes a grounding opening and closing position holding mechanism, which includes a grounding action rod (311) provided on the grounding rotating shaft (31), a grounding closing limit rod (312) corresponding to the closing position, a grounding opening limit rod (313) corresponding to the opening position, and a grounding holding spring (315) with one end fixed to the tool housing (1) and the other end fixed to the grounding rotating shaft disk (314) provided on the grounding rotating shaft (311).

6. The economical ring main unit operation training tool as described in claim 1, characterized in that: It also includes a switch position signal output mechanism, which includes a sector-shaped structure (101) fixed on the switch rotation shaft (21) and a coaxial disk (102) fixedly mounted on the switch rotation shaft (21). The sector-shaped structure (101) is provided with a protruding rod (103), and the coaxial disk (102) is provided with an arc-shaped groove (104). The protruding rod (103) is inserted into the arc-shaped groove (104), and the coaxial disk (102) is provided with an arc-shaped groove (104). The micro switch (106) is connected to an extension rod (105). The extension rod (105) acts on the micro switch (106). When the switch rotation shaft (21) is closed, the protruding rod (103) presses down on the arc groove (104). When the switch rotation shaft (21) is open, the protruding rod (103) presses up on the arc groove (104), driving the coaxial disk (102) and the extension rod (105) to move and change the state of the micro switch (106).

7. The economical ring main unit operation training tool as described in claim 1, characterized in that: It also includes a grounding signal output mechanism, which includes a fan-shaped structure (101) fixed on the grounding rotation shaft (31) and a coaxial disk (102) fixedly mounted on the grounding rotation shaft (31). The fan-shaped structure (101) is provided with a protruding rod (103), and the coaxial disk (102) is provided with an arc-shaped groove (104). The protruding rod (103) is inserted into the arc-shaped groove (104), and the coaxial disk (102) is provided with a grounding signal output mechanism. The micro switch (106) is connected to an extension rod (105). The extension rod (105) acts on the micro switch (106). When the grounding rotating shaft (31) is closed, the protruding rod (103) presses down on the arc groove (104). When the grounding rotating shaft (31) is open, the protruding rod (103) presses up on the arc groove (104), which drives the coaxial disk (102) and the extension rod (105) to move and change the state of the micro switch (106).

8. The economical ring main unit operation training tool as described in claim 1, characterized in that: It also includes an electric operating mechanism, which includes a motor (107) and a transmission gear set (108). The motor (107) is linked with the switch rotating shaft (21) and the grounding rotating shaft (31) through the transmission gear set (108) to realize electric opening and closing of the circuit breaker.

9. The economical ring main unit operation training tool as described in claim 1, characterized in that: It also includes a control circuit, which is divided into a circuit indicating opening and closing, a motor drive circuit, a circuit opening control circuit, and a circuit closing control circuit.

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