Integrated anti-misoperation device

Abstract

The utility model discloses an integrated anti-misoperation device which comprises a manual anti-misoperation assembly and an auxiliary switch assembly, the manual anti-misoperation assembly and the auxiliary switch assembly are both connected with a manual shaft, the manual shaft is coaxially connected with a motor shaft, and the manual anti-misoperation assembly is installed at one end of the manual shaft; the auxiliary switch assembly comprises a belt wheel assembly, an auxiliary switch shaft, a cam assembly, a switch-off travel switch assembly, a switch-on travel switch assembly and a harmonic speed reducer arranged at the other end of the manual shaft. The harmonic speed reducer is connected with an auxiliary switch shaft through a belt wheel assembly, and the auxiliary switch shaft is connected with a switch-off travel switch assembly and a switch-on travel switch assembly in a matched mode through a cam assembly. According to the utility model, the high-speed rotation of the motor can be stably converted into low-speed motion, and the cam mechanism is used for accurately controlling and switching the magnetic blow-out travel switch, so that the switching-on and switching-off states can be conveniently, automatically and safely switched, and visual feedback can be obtained through the switching-on and switching-off indication board during switching of the brake position.

Description

Technical Field

[0001] The utility model relates to the technical field of five-protection of high-voltage switch equipment, and in particular to an integrated misoperation prevention device. Background Art

[0002] Circuit breakers, disconnectors and earthing switches are important switchgear in power systems and play a vital role in ensuring personal and equipment safety. Disconnectors and earthing switches are maintenance switches and must be operated according to certain procedures, especially they must be interlocked with circuit breakers.

[0003] At present, circuit breakers, disconnectors and earthing switches are widely used in my country, but different equipment models are selected according to different scenarios and functions. Different models and voltage levels usually lead to different structures and different matching interlocks. The application of KYN28A-12 high-voltage switchgear is becoming more and more common, and the technology is very mature. This type of switchgear mainly relies on its own mechanical interlocking to achieve the "five protection" function, namely, preventing accidental opening and closing of circuit breakers, preventing accidental closing of switches with earthing knives, preventing accidental closing of earthing knives with power on, preventing accidental entry into live intervals, and preventing accidental pulling and closing of isolating trolleys with load. The five-protection interlocking of medium-voltage switchgear usually adopts mechanical transmission to achieve interlocking, which has strong reliability, but the transmission structure between parts is relatively complex, and has high requirements for assembly process.

[0004] In a pumped-storage power generation system, power control components such as circuit breakers, disconnectors and earthing switches are often designed to be large in size because they undertake key power regulation and protection tasks. They exist as independent equipment units to meet the system's requirements for high voltage and high current processing capabilities. However, the size and weight of these devices make it difficult to implement traditional mechanical interlocking devices, and it is difficult to ensure the precise coordination of the operating sequence between the switches, which increases the complexity of the operation and safety hazards.

[0005] Especially in such a high-voltage environment, if we only rely on the electrical interlock mechanism as the main means to prevent misoperation, it may not be able to fully guarantee the personal safety of operators and the stable operation of power equipment due to electronic system failures, signal interference or control logic defects, thus potentially causing major safety accidents.

[0006] To this end, the present application specifically proposes a manual anti-misoperation component to solve the above technical problems. Utility Model Content

[0007] The main purpose of the utility model is to provide an integrated anti-misoperation device based on a mechanical interlocking mechanism and with a simple transmission structure. In actual use, it can optimize the mechanical structure and operation logic to achieve effective control and protection of large power switching equipment with minimal complexity, ensure the correctness of the operating steps, thereby reducing the risk of misoperation at the source and improving the safety and reliability of the entire pumped-storage power generation system.

[0008] In order to solve the above technical problems, the utility model provides an integrated anti-misoperation device, including a manual anti-misoperation component and an auxiliary switch component which are arranged in a frame housing and connected to each other, the manual anti-misoperation component and the auxiliary switch component are both connected to a manual shaft, and the manual shaft is coaxially connected to a motor shaft, wherein:

[0009] The manual error prevention component is installed at one end of the manual shaft;

[0010] The auxiliary switch assembly includes a pulley assembly, an auxiliary switch shaft, a cam assembly, an open position travel switch assembly arranged at the top of the frame housing, a closed position travel switch assembly arranged at the bottom of the frame housing, and a harmonic reducer arranged at the other end of the manual shaft;

[0011] The harmonic reducer is connected to the auxiliary switch shaft through a pulley assembly, and the auxiliary switch shaft is connected with an open-position travel switch assembly and a closed-position travel switch assembly through a cam assembly.

[0012] Furthermore, the pulley assembly includes a small pulley, a large pulley and a belt sleeved on the outside of the small pulley and the large pulley, and the large pulley is set on the auxiliary switch shaft through a key.

[0013] Furthermore, the auxiliary switch assembly further comprises a transition plate, a pressure plate and a transmission sleeve, and the manual shaft sequentially passes through the harmonic reducer, the transition plate, the pulley assembly, the pressure plate and the transmission sleeve;

[0014] The small pulley is installed on the harmonic reducer through a transition plate, and the small pulley is limited by a pressure plate to prevent the small pulley from sliding;

[0015] The transmission sleeve is installed on the manual shaft through a key, and the transmission sleeve is arranged on the harmonic reducer.

[0016] Furthermore, the auxiliary switch assembly also includes a tensioning wheel assembly disposed in the frame housing, and the tensioning wheel assembly is used to contact and tighten the belt.

[0017] Furthermore, the auxiliary switch assembly also includes two sets of limit sleeves respectively located at both ends of the auxiliary switch shaft, and the open position travel switch assembly and the closed position travel switch assembly are limitedly arranged on the auxiliary switch shaft by the two sets of limit sleeves.

[0018] Furthermore, the cam assembly includes a motor cam and an auxiliary switch cam arranged on the auxiliary switch shaft, and the motor cam and the auxiliary switch cam are located between the two groups of limit sleeves and are arranged adjacent to each other.

[0019] Furthermore, the auxiliary switch assembly also includes an opening and closing indicator plate, and the opening and closing indicator plate is arranged at the end of the auxiliary switch shaft.

[0020] Furthermore, the auxiliary switch assembly also includes two sets of flange bearings, and flange bearings and limit sleeves are provided at both ends of the auxiliary switch shaft.

[0021] Furthermore, the limiting sleeve is made of polytetrafluoroethylene.

[0022] Furthermore, the inner ring of the harmonic reducer is provided with a high-speed rotation input, and the outer ring of the harmonic reducer is provided with a low-speed rotation output.

[0023] The beneficial effects of the utility model are embodied in:

[0024] 1. The manual anti-misoperation component and the auxiliary switch component of the utility model can optimize the space occupation of the equipment, improve the system integration and the convenience of operation through integrated design.

[0025] 2. The cam mechanism of the utility model can be used to switch the magnetic blow-out travel switch, and in combination with the transmission of the harmonic reducer, it can facilitate the precise control of the opening and closing switching, thereby ensuring the reliable transmission and execution of the control signal. At the same time, it can also obtain intuitive visual feedback when the gate position is switched through the opening and closing indicator board, realizing instant and clear observation of the status during the operation, and significantly enhancing the accuracy of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0027] Figure 1 It is a three-dimensional schematic diagram of the structural connection of the utility model;

[0028] Figure 2 It is a three-dimensional schematic diagram of the internal structure of the device of the utility model;

[0029] Figure 3 It is a cross-sectional schematic diagram of the pinion installation part of the utility model;

[0030] Figure 4 It is a schematic diagram of the opening and closing states of the utility model;

[0031] Figure 5It is a three-dimensional schematic diagram of the overall structure of the utility model.

[0032] In the figure:

[0033] A. The cavity for placing the manual error prevention component; B. The cavity for placing the auxiliary switch component;

[0034] 1. Manual shaft; 2. Harmonic reducer; 3. Transition plate; 4. Small pulley; 5. Pressure plate; 6. Belt; 7. Large pulley; 8. Tensioner assembly; 9. Auxiliary switch shaft; 10. Flange bearing; 11. Limit sleeve; 12. Motor cam; 13. Auxiliary switch cam; 14. Opening and closing travel switch assembly; 15. Opening and closing indicator plate; 16. Closing and closing travel switch assembly; 17. Key; 18. Transmission sleeve. DETAILED DESCRIPTION

[0035] 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. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0036] In the embodiment, see Figures 1 to 5 .

[0037] The utility model provides an integrated anti-misoperation device, which is suitable for circuit breakers and phase-changing switch equipment in a pumped storage generator system. The integrated anti-misoperation mechanism is installed at the manual operation position of the disconnector and the grounding switch. Its overall appearance is as follows: Figure 5 As shown, at this time, the manual shaft 1 inside the device is coaxially installed with the motor shaft through a spline groove body, and the entire device is arranged in an aluminum or aluminum alloy frame shell.

[0038] Furthermore, the appearance after removing the top guide cover of the frame housing is as follows Figure 1 As shown, the device specifically includes a manual error prevention component and an auxiliary switch component which are arranged in a frame shell and are interconnected, and are respectively placed in a manual error prevention component placement cavity A and an auxiliary switch component placement cavity B of the frame shell. The manual error prevention component and the auxiliary switch component are both connected to a manual shaft 1, and the manual shaft 1 is coaxially connected to the motor shaft.

[0039] At this time, the manual anti-misoperation component and the auxiliary switch component can optimize the equipment space occupancy, improve system integration and ease of operation through integrated design.

[0040] in:

[0041] (1) The manual anti-error assembly is installed at one end of the manual shaft 1. The manual anti-error assembly includes a panel assembly, a main transmission part, an electric control part, a locking assembly, and a locking subassembly, wherein:

[0042] The panel components mainly include an operating lock, a locking lock, a locking release lock and a knob. The operating lock is used for switching between electric and manual modes and serves as the master control key for switch maintenance. The locking lock is used to limit the switch to the closed position. At this time, both electric and manual operation of the switch are restricted. The locking release lock is used to limit the switch to the open position. At this time, both electric and manual operation of the switch are restricted.

[0043] By turning the knob, the turntable is driven to rotate, and the electric, manual, locked and unlocked modes can be switched. There are grooves on the turntable. When the turntable is rotated to a certain mode, the corresponding lock is turned and the lock tongue will be stuck in the groove, thereby limiting the rotation of the turntable.

[0044] At this time, in manual mode, the round hole on the turntable is concentric with the manual shaft 1. At this time, the manual shaft 1 can be rotated by the external crank to realize manual closing and opening.

[0045] (2) The internal structure of the auxiliary switch assembly is as follows Figure 2 As shown, it includes a pulley assembly, an auxiliary switch shaft 9, a cam assembly, an open position travel switch assembly 14 arranged at the top of the frame housing, a closed position travel switch assembly 16 arranged at the bottom of the frame housing, and a harmonic reducer 2 arranged at the other end of the manual shaft 1;

[0046] The harmonic reducer 2 is connected to the auxiliary switch shaft 9 through a pulley assembly, and the auxiliary switch shaft 9 is connected to the open position travel switch assembly 14 and the closed position travel switch assembly 16 through a cam assembly.

[0047] It should be additionally explained here that, during the operation of the harmonic reducer 2, the inner ring thereof is provided with a high-speed rotation input, and the outer ring thereof is provided with a low-speed rotation output.

[0048] In a specific implementation structure, the pulley assembly includes a small pulley 4 , a large pulley 7 and a belt 6 sleeved on the outside of the small pulley 4 and the large pulley 7 . The large pulley 7 is set on the auxiliary switch shaft 9 through a key 17 .

[0049] It can be explained at this point that the small pulley 4 and the large pulley 7 have the same number of teeth and mode, and the transmission is synchronous transmission.

[0050] For further reference, Figure 3 The auxiliary switch assembly also includes a transition plate 3, a pressure plate 5 and a transmission sleeve 18, and the manual shaft 1 passes through the harmonic reducer 2, the transition plate 3, the pulley assembly, the pressure plate 5 and the transmission sleeve 18 in sequence.

[0051] At this point, it needs to be further explained that the transition plate 3 is installed on the end face of the harmonic reducer 2, the small pulley 4 is installed on the harmonic reducer 2 through the transition plate 3, and the small pulley 4 is limited by the pressure plate 5 to prevent the small pulley 4 from slipping out, the transmission sleeve 18 is installed on the manual shaft 1 through the key 17, and the transmission sleeve 18 is arranged on the harmonic reducer 2. At this time, the harmonic reducer 2 is fixedly installed in the frame, and the manual shaft 1 passes through the center, and the harmonic reducer 2 is used to be connected to the manual shaft 1 through the transmission sleeve 18.

[0052] Furthermore, the auxiliary switch assembly also includes a tensioning wheel assembly 8 disposed in the frame housing, and the tensioning wheel assembly 8 is used to contact and tighten the belt 6, thereby controlling the belt 6 to remain in a tensioned state.

[0053] In a specific implementation structure, the auxiliary switch assembly also includes two sets of limit sleeves 11 respectively located at both ends of the auxiliary switch shaft 9, and the open position travel switch assembly 14 and the closed position travel switch assembly 16 are limitedly set on the auxiliary switch shaft 9 by the two sets of limit sleeves 11.

[0054] It can be further explained that the limiting sleeve 11 is generally made of polytetrafluoroethylene, which has good wear resistance and stability.

[0055] For further reference, Figure 4 The cam assembly is connected to the auxiliary switch shaft 9 through a key 17. The cam assembly includes a motor cam 12 and an auxiliary switch cam 13 arranged on the auxiliary switch shaft 9. The motor cam 12 and the auxiliary switch cam 13 are located between the two groups of limit sleeves 11 and are adjacent to each other.

[0056] At this time, the motor cam 12 is responsible for switching the travel switch for the motor; the auxiliary switch cam 13 is responsible for switching the travel switch for the auxiliary circuit.

[0057] What can be explained in detail at this point is that an aviation connector is also provided at the lower end of the frame housing to facilitate the auxiliary switch signal to be led out through the aviation connector.

[0058] Furthermore, the auxiliary switch assembly also includes an opening and closing indicator plate 15, which is arranged at the end of the auxiliary switch shaft 9 and is used to switch the opening and closing indication during the rotation of the auxiliary switch shaft 9.

[0059] At this time, during the actual use of the device, intuitive visual feedback can be obtained when the gate position is switched through the opening and closing indicator plate 15, which enables instant and clear observation of the status during operation and significantly enhances the accuracy of the operation.

[0060] Furthermore, the auxiliary switch assembly also includes two sets of flange bearings 10, and flange bearings 10 and limit sleeves 11 are provided at both ends of the auxiliary switch shaft 9. At this time, the flange bearings 10 and limit sleeves 11 can prevent the motor cam 12 and the auxiliary switch cam 13 from moving axially.

[0061] It can be supplemented that the auxiliary switch shaft 9 passes through the opening and closing indicator plate 15, the flange bearing 10, the limit sleeve 11, the auxiliary switch cam 13, the motor cam 12, and the large pulley 7 respectively, and the auxiliary switch shaft 9 is installed in the auxiliary switch component placement cavity B of the frame shell.

[0062] In addition, when using the device, it should be noted that the opening angle of the motor cam 12 is slightly smaller than the opening angle of the auxiliary switch cam 13, so that the contacts of the auxiliary switch are connected first, and the auxiliary contacts of the motor are connected later, avoiding the auxiliary switch from not switching after the motor is powered off.

[0063] At this time, the auxiliary switch adopts a magnetic blow-out type and is equipped with an over-center spring. When the roller on the auxiliary switch is compressed to a certain distance, the contact automatically completes the switching under the action of the over-center spring.

[0064] In actual use of this component structure, when the switch is closed or opened, the manual shaft 1 rotates by the motor or manually, driving the harmonic reducer 2 to rotate synchronously, the harmonic reducer 2 drives two sets of pulleys, and the pulley assembly drives the auxiliary switch shaft 9 to rotate. The cam assembly installed on the auxiliary switch shaft 9 can rotate to switch the auxiliary switch to provide a signal.

[0065] In summary, the device uses a cam mechanism to switch the magnetic blow-out travel switch, and cooperates with the transmission of the harmonic reducer 2 to smoothly convert the high-speed rotation of the motor into the low-speed movement required by the auxiliary switch, thereby facilitating the precise control of the opening and closing switching, thereby ensuring the reliable transmission and execution of the control signal, which not only ensures the stability of the operation and the durability of the equipment, but also improves the automation level and safety of the entire operation sequence, and facilitates the automatic and safe opening and closing state switching operation.

[0066] In a specific embodiment, the specific implementation process of the device includes:

[0067] The integrated anti-error device has two switch status positions, namely the closing position and the opening position. The following is an example of the closing and opening actions of the isolating switch. The specific operation process is as follows:

[0068] like Figure 4The diagram shows the rotation angle of the cam when the switch is in the open position and the closed position. When the switch is in the closed position, the cam presses the closed auxiliary switch assembly, and part of the closed auxiliary switch signal is provided to the motor circuit and part to the signal circuit. When the switch needs to be opened, the motor or manual drive the manual shaft 1 to rotate counterclockwise, and the harmonic reducer 2 rotates clockwise under the action of the manual shaft 1, and drives the small pulley 4 to drive clockwise at the same time; the large pulley 7 rotates clockwise to drive the auxiliary switch shaft 9 to rotate, and at the same time, the motor cam 12 and the auxiliary switch cam 13 also rotate clockwise. When the auxiliary switch cam 13 presses the open auxiliary switch roller, the auxiliary circuit signal is connected, and the auxiliary switch shaft 9 continues to rotate a certain angle. When the motor cam 12 presses the auxiliary switch roller, the motor circuit power supply is switched, and the motor is powered off to drive the entire device to stop. At this time, the switch is in the open position, and the open position display of the opening and closing indicator 15 is also transferred to the observation port on the device panel.

[0069] When the switch is in the open position, the cam presses the open auxiliary switch assembly, and part of the open auxiliary switch signal is provided to the motor circuit and part to the signal circuit. When the switch needs to be closed, the motor or manual drive the manual shaft 1 to rotate clockwise, and the harmonic reducer 2 rotates counterclockwise under the action of the manual shaft 1, and drives the small pulley 4 to transmit counterclockwise at the same time; the large pulley 7 rotates counterclockwise to drive the auxiliary switch shaft 9 to rotate, and at the same time, the motor cam 12 and the auxiliary switch cam 13 also rotate counterclockwise. When the auxiliary switch cam 13 presses the open auxiliary switch roller, the auxiliary circuit signal is connected, and the auxiliary switch shaft 9 continues to rotate a certain angle. When the motor cam 12 presses the auxiliary switch roller, the motor circuit power supply is switched, and the motor is powered off to stop the entire device. At this time, the switch is in the open position, and the closed position display of the opening and closing indicator 15 is also transferred to the observation port on the device panel.

[0070] Through the above design scheme, the manual anti-misoperation component and the auxiliary switch component are well integrated, and the signal and mechanical indication of the auxiliary circuit are provided.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0072] In addition, it should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0073] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, in the embodiments of the utility model, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

Claims

1. An integrated anti-misoperation device, comprising a manual anti-misoperation component and an auxiliary switch component which are arranged in a frame housing and connected to each other, wherein the manual anti-misoperation component and the auxiliary switch component are both connected to a manual shaft (1), and the manual shaft (1) is coaxially connected to a motor shaft, characterized in that: in: The manual error prevention component is installed at one end of the manual shaft (1); The auxiliary switch assembly comprises a pulley assembly, an auxiliary switch shaft (9), a cam assembly, an open position travel switch assembly (14) arranged at the top of the frame housing, a closed position travel switch assembly (16) arranged at the bottom of the frame housing, and a harmonic reducer (2) arranged at the other end of the manual shaft (1); The harmonic reducer (2) is connected to the auxiliary switch shaft (9) via a pulley assembly, and the auxiliary switch shaft (9) is connected to an open-position travel switch assembly (14) and a closed-position travel switch assembly (16) via a cam assembly.

2. The integrated anti-misoperation device according to claim 1, characterized in that: The pulley assembly comprises a small pulley (4), a large pulley (7) and a belt (6) sleeved on the outside of the small pulley (4) and the large pulley (7); the large pulley (7) is arranged on the auxiliary switch shaft (9) through a key (17).

3. The integrated anti-misoperation device according to claim 2, characterized in that: The auxiliary switch assembly further comprises a transition plate (3), a pressure plate (5) and a transmission sleeve (18), and the manual shaft (1) passes through the harmonic reducer (2), the transition plate (3), the pulley assembly, the pressure plate (5) and the transmission sleeve (18) in sequence; The small pulley (4) is installed on the harmonic reducer (2) via a transition plate (3), and the small pulley (4) is limited by a pressure plate (5) to prevent the small pulley (4) from sliding; The transmission sleeve (18) is mounted on the manual shaft (1) via a key (17), and the transmission sleeve (18) is arranged on the harmonic reducer (2).

4. The integrated anti-misoperation device according to claim 2, characterized in that: The auxiliary switch assembly also includes a tension wheel assembly (8) arranged in the frame housing, and the tension wheel assembly (8) is used for contacting and tightening the belt (6).

5. The integrated anti-misoperation device according to claim 1, characterized in that: The auxiliary switch assembly also includes two groups of limit sleeves (11) respectively located at two ends of the auxiliary switch shaft (9), and the open-position travel switch assembly (14) and the closed-position travel switch assembly (16) are limitedly arranged on the auxiliary switch shaft (9) by the two groups of limit sleeves (11).

6. The integrated anti-misoperation device according to claim 5, characterized in that: The cam assembly comprises a motor cam (12) and an auxiliary switch cam (13) arranged on the auxiliary switch shaft (9), and the motor cam (12) and the auxiliary switch cam (13) are located between two groups of limit sleeves (11) and are arranged adjacent to each other.

7. The integrated anti-misoperation device according to claim 5, characterized in that: The auxiliary switch assembly also includes an opening and closing indicator plate (15), and the opening and closing indicator plate (15) is arranged at the end of the auxiliary switch shaft (9).

8. The integrated anti-misoperation device according to claim 5, characterized in that: The auxiliary switch assembly also includes two sets of flange bearings (10), and both ends of the auxiliary switch shaft (9) are provided with flange bearings (10) and limit sleeves (11).

9. The integrated anti-misoperation device according to claim 5, characterized in that: The limiting sleeve (11) is made of polytetrafluoroethylene.

10. The integrated anti-misoperation device according to claim 1, characterized in that: The inner ring of the harmonic reducer (2) is provided with a high-speed rotation input, and the outer ring of the harmonic reducer (2) is provided with a low-speed rotation output.

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