Double-speed control mechanism with manual separation device

Abstract

The utility model discloses a double-speed control mechanism with a manual separating device, which comprises a repulsive force mechanism and a mechanism main pull rod, one end of the repulsive force mechanism is connected with a permanent magnetic mechanism, the mechanism main pull rod movably penetrates through the centers of the repulsive force mechanism and the permanent magnetic mechanism respectively, and one end of the main pull rod close to the repulsive force mechanism is connected with an adapter block. An emergency opening assembly is fixed to the end, away from the repulsive force mechanism, of the permanent magnet mechanism through a first bolt. The double-speed control mechanism with the manual opening device provided by the utility model solves the problem of slow opening speed caused by complex structure and inconvenient installation of a spring operation mechanism used in the prior art, and is provided with a manual emergency opening structure at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of double-speed control mechanisms, in particular to a double-speed control mechanism with a hand-disconnecting device. Background Art

[0002] As the proportion of renewable energy increases, the safety and economic viability of the power system face numerous challenges, including power system reliability, power balance, and rising costs of absorbing renewable energy. The randomness, volatility, and intermittency of renewable energy generation have a serious impact on the stability and reliability of the power system. Furthermore, the rapid growth of renewable energy generation has made it more difficult to balance the power system's power, placing higher demands on traditional power sources' ability to adapt to load changes and balance fluctuations in renewable energy output. Therefore, traditional circuit breakers need to be upgraded to ensure a stable and balanced power system. However, the current spring operating mechanism is complex and inconvenient to install, resulting in slow tripping speeds and the lack of a manual emergency trip mechanism. Utility Model Content

[0003] The purpose of the utility model is to provide a dual-speed control mechanism with a manual opening device, which solves the problem that the existing spring control mechanism has a complex structure and is inconvenient to install, resulting in a slow opening speed, and at the same time sets a manual emergency opening structure.

[0004] The technical solution adopted by the present utility model is a two-speed control mechanism with a manual release device, including a repulsion mechanism, one end of the repulsion mechanism is connected to a permanent magnet mechanism, and also includes a main pull rod of the mechanism, which is movable through the center of the repulsion mechanism and the permanent magnet mechanism respectively. The end of the main pull rod close to the repulsion mechanism is connected to a transfer block, and the end of the permanent magnet mechanism away from the repulsion mechanism is also fixed with an emergency trip assembly by a first bolt.

[0005] The utility model is also characterized in that:

[0006] The repulsion mechanism includes a repulsion mechanism mounting base, which has an inverted "T"-shaped cross-section. The transverse portion of the repulsion mechanism mounting base is connected to a lower bracket via a second bolt. A cavity is provided at one end of the mechanism mounting base close to the lower bracket. A repulsion tripping coil is provided on the bracket, and the repulsion tripping coil is located in the cavity. A repulsion disk is fixedly sleeved on the main pull rod of the mechanism, and the repulsion disk is located in the cavity. The main pull rod of the mechanism movably passes through the lower bracket and the center of the repulsion tripping coil.

[0007] A guide sleeve is fixedly passed through the center of the repulsion mechanism installation base, a permanent magnet limit sleeve is movably passed through the center of the guide sleeve, and a main pull rod of the mechanism is fixedly passed through the center of the permanent magnet limit sleeve.

[0008] The lower bracket is arranged in parallel with the transverse part of the repulsion mechanism mounting base, and a repulsion washer is sleeved on the upper edge of the repulsion tripping coil.

[0009] The permanent magnet mechanism includes a magnetic cylinder, which is bonded to one end of the installation base of the repulsive force mechanism away from the lower bracket. An inner cavity is provided at the center of the magnetic cylinder. A "T"-shaped moving iron core is also sleeved on the main pull rod of the mechanism. The moving iron core is located in the inner cavity of the magnetic cylinder. The outer diameter of the smaller end of the moving iron core is the same as and connected to the outer diameter of the smaller end of the installation base of the repulsive force mechanism. A permanent magnet coil is provided on the inner wall of the magnetic cylinder. Part of the permanent magnet coil is sleeved on the outside of the smaller end of the moving iron core, and part of it is sleeved on the outside of the smaller end of the installation base of the repulsive force mechanism. The end of the moving iron core away from the installation base of the repulsive force mechanism is a closing magnetic circuit holding component;

[0010] A magnetic yoke and a permanent magnet are sequentially sleeved from the inside to the outside between the smaller end of the outer diameter of the moving iron core and the inner wall of the magnetic cylinder. A moving iron core limiting sleeve is also fitted on the inner wall of the magnetic cylinder. The inner wall of the moving iron core limiting sleeve is in contact with the larger end of the outer diameter of the moving iron core. The length of the moving iron core limiting sleeve is greater than the length of the larger end of the outer diameter of the moving iron core;

[0011] One end of the magnetic cylinder away from the installation base of the repulsive force mechanism is connected to the upper support of the mechanism through a third bolt. An upper limit sleeve of the mechanism is movably penetrated through the center of the upper support of the mechanism. The main pull rod of the mechanism is fixedly penetrated through the upper limit sleeve of the mechanism. A convex platform is provided at one end of the upper limit sleeve of the mechanism away from the repulsive force mechanism. A fixing nut is also fixedly sleeved on the main pull rod of the mechanism. The lower end surface of the fixing nut is in contact with the upper end surface of the convex platform;

[0012] The emergency opening component is arranged on the upper support of the mechanism through the first bolt.

[0013] The magnetic yoke and the permanent magnet have the same length. The sum of the lengths of the magnetic yoke and the permanent magnet coil is equal to the sum of the lengths of the smaller end of the outer diameter of the moving iron core and the smaller end of the outer diameter of the installation base of the repulsive force mechanism.

[0014] The closing magnetic circuit holding component includes two magnetic separation plates, and a magnetic conduction plate is provided between the two magnetic separation plates.

[0015] The emergency opening component includes two emergency opening blocks, which are respectively fixed on the upper support of the mechanism through the first bolt. It also includes an emergency opening axle pin, which rotatably penetrates through the two emergency opening blocks. One end of the emergency opening axle pin is connected with a hexagonal rotating block, and the other end of the emergency opening axle pin is connected with an eccentric wheel. The smaller diameter part of the eccentric wheel is in contact with the lower end surface of the convex platform on the upper limit sleeve of the mechanism.

[0016] The beneficial effects of the present utility model are:

[0017] (1) The double-speed control mechanism with a manual opening device of the present utility model improves the opening and closing speed of the circuit breaker through the design of double-speed operation, and has the characteristics of simple structure, realizable double-mechanism selective opening, short opening time, with emergency manual opening, high reliability, long service life, etc.;

[0018] (2) The dual-speed control mechanism with manual tripping device of this utility model has upgraded the traditional circuit breaker to ensure the stable balance of the power system. The dual-speed control mechanism is simple and easy to install, can greatly improve the tripping speed, has low peak current, low action dispersion, can realize phase selection and mechanism selection in conjunction with the intelligent controller, and has manual emergency tripping. It is suitable for most circuit breakers, so the dual-speed control mechanism with manual tripping has a broad market prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall cross-sectional structure of the dual-speed control mechanism of the utility model;

[0020] Figure 2 This is a schematic diagram of the emergency trip structure of the dual-speed control mechanism of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the emergency trip block of the dual-speed control mechanism of the utility model;

[0022] Figure 4 It is a schematic diagram of the emergency trip shaft pin structure of the dual-speed control mechanism of the utility model.

[0023] In the figure, 101. Main pull rod of the mechanism, 102. Upper limit sleeve of the mechanism, 103. Upper support of the mechanism, 104. Moving iron core limit sleeve, 105. Moving iron core, 106. Magnetic yoke, 107. Permanent magnetic coil, 108. Permanent magnetic limit sleeve, 109. Guide sleeve, 110. Repulsion disk, 111. Repulsion trip coil, 112. Repulsion washer, 113. Lower bracket, 114. Adapter block, 115. Repulsion mechanism mounting base, 116. Magnetic cylinder, 117. Permanent magnet, 118. Magnetic isolation plate, 119. Magnetic conductive plate, 120. Emergency trip block, 121. Emergency trip shaft pin, 122. Eccentric wheel, 123. Hexagonal rotating block. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] Two-speed control mechanism with manual separation device, such as Figure 1 As shown, it includes a repulsive mechanism, one end of which is connected to a permanent magnetic mechanism, and also includes a mechanism main pull rod 101, which moves through the center of the repulsive mechanism and the permanent magnetic mechanism respectively;

[0026] Among them, the repulsive force mechanism includes a repulsive force mechanism mounting base 115, and the repulsive force mechanism mounting base 115 has an inverted "T" cross-sectional structure. The horizontal part of the repulsive force mechanism mounting base 115 is connected to a lower bracket 113 through a second bolt. The lower bracket 113 is arranged parallel to the horizontal part of the repulsive force mechanism mounting base 115. One end of the mechanism mounting base 115 close to the lower bracket 113 is provided with a cavity. A repulsive force opening coil 111 is arranged on the bracket 113, and the repulsive force opening coil 111 is located in the cavity. A repulsive force disk 110 is fixedly sleeved on the main mechanism pull rod 101, and the repulsive force disk 110 is located in the cavity. The main mechanism pull rod 101 movably penetrates through the center of the lower bracket 113 and the repulsive force opening coil 111. A repulsive force washer 112 is sleeved on the upper edge of the repulsive force opening coil 111. The repulsive force washer 112 can adjust the gap between the repulsive force opening coil 111 and the repulsive force disk 110 to ensure that the repulsive force disk 110 does not contact the repulsive force opening coil 111 during the movement process.

[0027] A guide sleeve 109 is fixedly penetrated through the center of the repulsive force mechanism mounting base 115. A permanent magnet limit sleeve 108 is movably penetrated through the center of the guide sleeve 109. The main mechanism pull rod 101 is fixedly penetrated through the center of the permanent magnet limit sleeve 108, that is, during operation, the permanent magnet limit sleeve 108 can move up and down along the guide sleeve 109 with the main mechanism pull rod 101.

[0028] Furthermore, the permanent magnet mechanism includes a magnetic cylinder 116. The magnetic cylinder 116 is bonded to one end of the repulsive force mechanism mounting base 115 away from the lower bracket 113, and the gap between the two is smeared with sealant to form a closed mechanism main body between the two. An inner cavity is opened in the center of the magnetic cylinder 116. A "T"-shaped moving iron core 105 is also sleeved on the main mechanism pull rod 101. The moving iron core 105 is located in the inner cavity of the magnetic cylinder 116. The outer diameter of the smaller end of the moving iron core 105 is the same as and connected to the outer diameter of the smaller end of the repulsive force mechanism mounting base 115. A permanent magnet coil 107 is arranged on the inner wall of the magnetic cylinder 116. A part of the permanent magnet coil 107 is sleeved on the outside of the smaller end of the outer diameter of the moving iron core 105, and a part is sleeved on the outside of the smaller end of the outer diameter of the repulsive force mechanism mounting base 115. One end of the moving iron core 105 away from the repulsive force mechanism mounting base 115 is a closing magnetic circuit maintaining component. Specifically, the closing magnetic circuit maintaining component includes two magnetic separation plates 118, and a magnetic conduction plate 119 is arranged between the two magnetic separation plates 118.

[0029] A yoke 106 and a permanent magnet 117 are sequentially sleeved between the smaller-diameter end of the moving iron core 105 and the inner wall of the magnetic cylinder 116 from inside to outside. The yoke 106 and the permanent magnet 117 have the same length. The sum of the lengths of the yoke 106 and the permanent magnet coil 107 is equal to the sum of the lengths of the smaller-diameter end of the moving iron core 105 and the smaller-diameter end of the repulsion mechanism mounting base 115. A moving iron core limiting sleeve 104 is also fitted and sleeved on the inner wall of the magnetic cylinder 116. The inner wall of the moving iron core limiting sleeve 104 is in contact with the larger-diameter end of the moving iron core 105. The length of the moving iron core limiting sleeve 104 is greater than the length of the larger-diameter end of the moving iron core 105.

[0030] One end of the magnetic cylinder 116 away from the repulsion mechanism mounting base 115 is connected with an upper mechanism support 103 through a third bolt. An upper mechanism limiting sleeve 102 is movably penetrated through the center of the upper mechanism support 103. The main mechanism pull rod 101 is fixedly penetrated through the upper mechanism limiting sleeve 102. A boss is provided at one end of the upper mechanism limiting sleeve 102 away from the repulsion mechanism. A fixing nut is also fixedly sleeved on the main mechanism pull rod 101. The lower end surface of the fixing nut is in contact with the upper end surface of the boss. The fixing nut can limit and fix the upper mechanism limiting sleeve 102.

[0031] One end of the main pull rod 101 close to the repulsion mechanism is connected with an adapter block 114 to facilitate connection with the primary part of the circuit breaker through a shaft pin.

[0032] One end of the permanent magnet mechanism away from the repulsion mechanism is also fixed with an emergency opening component through a first bolt. Specifically, the emergency opening component is arranged on the upper mechanism support 103 through the first bolt.

[0033] Specifically, as Figure 2 、 3 shown, the emergency opening component includes two emergency opening blocks 120. The two emergency opening blocks 120 are respectively fixed on the upper mechanism support 103 through the first bolt. It also includes an emergency opening shaft pin 121. The emergency opening shaft pin 121 rotatably penetrates through the two emergency opening blocks 120. As Figure 4 shown, one end of the emergency opening shaft pin 121 is connected with a hexagonal rotating block 123, and the other end of the emergency opening shaft pin 121 is connected with an eccentric wheel 122. The smaller-diameter part of the eccentric wheel 122 is in contact with the lower end surface of the boss on the upper mechanism limiting sleeve 102. When in a power-off state, the energy storage capacitor cannot release pulsed current. When it is necessary to perform an opening operation to repair the circuit breaker, the emergency opening component can be used for the opening operation. The specific operation is as follows: Use a crank to rotate the hexagonal rotating block 123, thereby driving the emergency opening shaft pin 121 and the eccentric wheel 122 at the other end to rotate, so that the larger-diameter part of the eccentric wheel 122 is in contact with the lower end surface of the boss on the upper mechanism limiting sleeve 102. Under the action of an external force, the upper mechanism limiting sleeve 102 is pushed to move upward, driving the main mechanism pull rod 101 to move upward, thereby realizing the emergency opening operation.

[0034] Working process:

[0035] When the power grid system is operating normally without faults, the two-speed control mechanism is in the closed state. At this time, the system circuit is connected through the vacuum interrupter in the equipment. When a fault current appears in the power grid system, the mechanism will perform a tripping operation to disconnect the vacuum interrupter and cut off the fault current in the power grid to protect the circuit. When performing the tripping action, the tripping energy storage capacitor discharges to the repulsive tripping coil 111. The pulse current generated by the energy storage capacitor discharge induces eddy currents on the repulsive disk 110. The magnetic field generated by the induced eddy currents interacts with the magnetic field generated by the pulse current of the repulsive tripping coil 111 in the opposite direction, providing a repulsive force to provide power for the repulsive disk 110, causing the repulsive disk 110 to move upward. At the same time, another tripping energy storage capacitor releases a pulse current to the permanent magnet coil 107 in the permanent magnet mechanism. The generated magnetic field is opposite to the holding magnetic field direction of the permanent magnet 117. When the magnetic field generated by the permanent magnet coil 107 is greater than the holding force of the permanent magnet 117, it will push the moving iron core 105 upward. The moving iron core 105 will drive the main pull rod 101 of the mechanism upward. Combining the power released by the repulsive tripping coil 111 to the repulsive disk 110 will greatly increase the tripping speed of the mechanism, realizing the tripping action. After the tripping action is completed, the permanent magnet 117 in the permanent magnet mechanism will form a loop with the moving iron core 105 and the magnetic cylinder 116 to adsorb the moving iron core 105 onto the magnetic cylinder 116 for tripping holding;

[0036] When the fault current is repaired, the mechanism needs to perform a closing action. The closing energy storage capacitor will release a reverse pulse current to the permanent magnet coil 107 in the permanent magnet mechanism. The generated magnetic field direction is the same as the permanent magnet holding force. When the magnetic attraction generated by the current is greater than the holding force of the permanent magnet 117, the moving iron core 105 will move downward to drive the main pull rod 101 of the mechanism downward to complete the closing action.

[0037] When in a power outage state, the energy storage capacitor cannot release a pulse current. When it is necessary to perform a tripping action to repair the circuit breaker, the emergency tripping component can be used for tripping operation. The specific operation is as follows: Use a crank to rotate the hexagonal rotating block 123, thereby driving the emergency tripping shaft pin 121 and the eccentric wheel 122 at the other end to rotate, so that the larger diameter part of the eccentric wheel 122 contacts the lower end surface of the convex platform on the upper limit sleeve 102 of the mechanism. Under the action of an external force, the upper limit sleeve 102 of the mechanism is pushed upward to drive the main pull rod 101 of the mechanism upward, thereby realizing the emergency tripping operation.

[0038] Embodiment 1

[0039] A two-speed control mechanism with a manual tripping device, as Figure 1 shown, includes a repulsive mechanism. One end of the repulsive mechanism is connected with a permanent magnet mechanism, and also includes a main pull rod 101 of the mechanism. The main pull rod 101 of the mechanism respectively passes through the centers of the repulsive mechanism and the permanent magnet mechanism movably;

[0040] Among them, the repulsive force mechanism includes a repulsive force mechanism mounting base 115, which has an inverted "T" cross-sectional structure. The horizontal part of the repulsive force mechanism mounting base 115 is connected to a lower bracket 113 by a second bolt. The lower bracket 113 is arranged parallel to the horizontal part of the repulsive force mechanism mounting base 115. One end of the mechanism mounting base 115 close to the lower bracket 113 is provided with a cavity. A repulsive force opening coil 111 is provided on the bracket 113, and the repulsive force opening coil 111 is located in the cavity. A repulsive force disk 110 is fixedly sleeved on the main mechanism pull rod 101, and the repulsive force disk 110 is located in the cavity. The main mechanism pull rod 101 movably penetrates through the centers of the lower bracket 113 and the repulsive force opening coil 111. A repulsive force washer 112 is sleeved on the upper edge of the repulsive force opening coil 111. The repulsive force washer 112 can adjust the gap between the repulsive force opening coil 111 and the repulsive force disk 110 to ensure that the repulsive force disk 110 does not contact the repulsive force opening coil 111 during movement.

[0041] A guide sleeve 109 is fixedly penetrated through the center of the repulsive force mechanism mounting base 115. A permanent magnet limit sleeve 108 is movably penetrated through the center of the guide sleeve 109. The main mechanism pull rod 101 is fixedly penetrated through the center of the permanent magnet limit sleeve 108. That is, during operation, the permanent magnet limit sleeve 108 can move up and down along the guide sleeve 109 with the main mechanism pull rod 101.

[0042] One end of the main pull rod 101 close to the repulsive force mechanism is connected with an adapter block 114 to facilitate connection to the primary part of the circuit breaker through a shaft pin;

[0043] One end of the permanent magnet mechanism far from the repulsive force mechanism is also fixed with an emergency opening component through a first bolt. Specifically, the emergency opening component is arranged on the mechanism upper support 103 through the first bolt.

[0044] Specifically, the emergency opening component includes two emergency opening blocks 120. The two emergency opening blocks 120 are respectively fixed on the mechanism upper support 103 through the first bolt. It also includes an emergency opening shaft pin 121. The emergency opening shaft pin 121 rotatably penetrates through the two emergency opening blocks 120. One end of the emergency opening shaft pin 121 is connected with a hexagonal rotating block 123, and the other end of the emergency opening shaft pin 121 is connected with an eccentric wheel 122. The smaller diameter part of the eccentric wheel 122 contacts the lower end surface of the convex platform on the mechanism upper limit sleeve 102. When in a power-off state, the energy storage capacitor cannot release pulsed current. When it is necessary to perform an opening operation to repair the circuit breaker, the emergency opening component can be used for the opening operation. The specific operation is as follows: Use a crank to rotate the hexagonal rotating block 123, thereby driving the emergency opening shaft pin 121 and the eccentric wheel 122 at the other end to rotate, so that the larger diameter part of the eccentric wheel 122 contacts the lower end surface of the convex platform on the mechanism upper limit sleeve 102. Under the action of an external force, the mechanism upper limit sleeve 102 is pushed upward to drive the main mechanism pull rod 101 to move upward, thereby realizing the emergency opening operation.

[0045] Example 2

[0046] A two-speed control mechanism with a hand-separating device, as Figure 1 shown, includes a repulsive force mechanism. One end of the repulsive force mechanism is connected to a permanent magnet mechanism. It also includes a main pull rod 101 of the mechanism, and the main pull rod 101 of the mechanism respectively passes through the centers of the repulsive force mechanism and the permanent magnet mechanism movably;

[0047] Furthermore, the permanent magnet mechanism includes a magnetic cylinder 116. The magnetic cylinder 116 is bonded to one end of the mounting base 115 of the repulsive force mechanism away from the lower bracket 113. Sealant is applied to the gap between the two to form a closed mechanism body. An inner cavity is opened in the center of the magnetic cylinder 116. A "T"-shaped moving iron core 105 is also sleeved on the main pull rod 101 of the mechanism. The moving iron core 105 is located in the inner cavity of the magnetic cylinder 116. The outer diameter of the smaller end of the moving iron core 105 is the same as and connected to the outer diameter of the smaller end of the mounting base 115 of the repulsive force mechanism. A permanent magnet coil 107 is provided on the inner wall of the magnetic cylinder 116. A part of the permanent magnet coil 107 is sleeved on the outside of the smaller end of the moving iron core 105, and a part of it is sleeved on the outside of the smaller end of the mounting base 115 of the repulsive force mechanism. One end of the moving iron core 105 away from the mounting base 115 of the repulsive force mechanism is a shunt magnetic circuit holding component. Specifically, the shunt magnetic circuit holding component includes two magnetic separation plates 118, and a magnetic conduction plate 119 is provided between the two magnetic separation plates 118.

[0048] Between the smaller end of the outer diameter of the moving iron core 105 and the inner wall of the magnetic cylinder 116, a magnetic yoke 106 and a permanent magnet 117 are sequentially sleeved from the inside to the outside. The magnetic yoke 106 and the permanent magnet 117 have the same length. The sum of the lengths of the magnetic yoke 106 and the permanent magnet coil 107 is equal to the sum of the lengths of the smaller end of the outer diameter of the moving iron core 105 and the smaller end of the outer diameter of the mounting base 115 of the repulsive force mechanism. A moving iron core limiting sleeve 104 is also fitted on the inner wall of the magnetic cylinder 116. The inner wall of the moving iron core limiting sleeve 104 is in contact with the larger end of the outer diameter of the moving iron core 105. The length of the moving iron core limiting sleeve 104 is greater than the length of the larger end of the outer diameter of the moving iron core 105;

[0049] One end of the magnetic cylinder 116 away from the mounting base 115 of the repulsive force mechanism is connected to an upper support 103 of the mechanism through a third bolt. An upper limit sleeve 102 of the mechanism is movably penetrated through the center of the upper support 103 of the mechanism. The main pull rod 101 of the mechanism is fixedly penetrated through the upper limit sleeve 102 of the mechanism. A boss is provided at one end of the upper limit sleeve 102 of the mechanism away from the repulsive force mechanism. A fixing nut is also fixedly sleeved on the main pull rod 101 of the mechanism. The lower end surface of the fixing nut is in contact with the upper end surface of the boss, and the fixing nut can limit and fix the upper limit sleeve 102 of the mechanism.

[0050] One end of the main pull rod 101 close to the repulsive force mechanism is connected to an adapter block 114 to facilitate connection to the primary part of the circuit breaker through a shaft pin;

[0051] One end of the permanent magnet mechanism far from the repulsive force mechanism is also fixed with an emergency opening component through a first bolt. Specifically, the emergency opening component is arranged on the upper support 103 of the mechanism through the first bolt.

[0052] Specifically, the emergency opening component includes two emergency opening blocks 120. The two emergency opening blocks 120 are respectively fixed on the upper support 103 of the mechanism through the first bolt. It also includes an emergency opening shaft pin 121. The emergency opening shaft pin 121 rotates through the two emergency opening blocks 120. One end of the emergency opening shaft pin 121 is connected with a hexagonal rotating block 123, and the other end of the emergency opening shaft pin 121 is connected with an eccentric wheel 122. The part with a smaller diameter of the eccentric wheel 122 contacts the lower end surface of the boss on the upper limit sleeve 102 of the mechanism. When in a power-off state, the energy storage capacitor cannot release pulsed current. When it is necessary to perform an opening operation to repair the circuit breaker, the emergency opening component can be used for the opening operation.

[0053] Embodiment 3

[0054] The working process is as follows:

[0055] When the power grid system is operating normally without faults, the two-speed control mechanism is in the closing state. At this time, the system circuit is connected through the vacuum interrupter in the equipment. When a fault current appears in the power grid system, the mechanism will perform an opening operation to disconnect the vacuum interrupter to disconnect the fault current in the power grid to protect the circuit. When performing the opening operation, the opening energy storage capacitor discharges to the repulsive opening coil 111. The pulsed current generated by the discharge of the energy storage capacitor induces eddy currents on the repulsive disk 110. The magnetic field generated by the induced eddy currents interacts with the magnetic field generated by the pulsed current of the repulsive opening coil 111 in the opposite direction to provide a repulsive force to provide power for the repulsive disk 110, so that the repulsive disk 110 moves upward. At the same time, another opening energy storage capacitor releases pulsed current to the permanent magnet coil 107 in the permanent magnet mechanism. The generated magnetic field is opposite to the holding magnetic field direction of the permanent magnet 117. When the magnetic field generated by the permanent magnet coil 107 is greater than the holding force of the permanent magnet, it will push the moving iron core 105 upward. The moving iron core 105 will drive the main pull rod 101 of the mechanism upward. Combining the power released by the repulsive opening coil 111 to the repulsive disk 110 will greatly increase the opening speed of the mechanism to achieve the opening operation. After the opening operation is completed, the permanent magnet 117 in the permanent magnet mechanism will form a loop with the moving iron core 105 and the magnetic cylinder 116 to adsorb the moving iron core 105 onto the magnetic cylinder 116 for opening holding;

[0056] When the fault current is repaired and the mechanism needs to perform a closing operation, the closing energy storage capacitor will release a reverse pulsed current to the permanent magnet coil 107 in the permanent magnet mechanism. The generated magnetic field direction is the same as the holding force of the permanent magnet. When the magnetic attraction force generated by the current is greater than the holding force of the permanent magnet 117, the moving iron core 105 will move downward to drive the main pull rod 101 of the mechanism downward to complete the closing operation.

[0057] When in a power outage state, the energy storage capacitor cannot release pulsed current. To perform a circuit breaker opening operation for maintenance, the emergency opening assembly can be used. The specific operation is as follows: Use a crank to rotate the hexagonal rotating block 123, thereby driving the emergency opening shaft pin 121 and the eccentric wheel 122 at the other end to rotate, so that the part with a larger diameter of the eccentric wheel 122 contacts the lower end surface of the boss on the upper limit sleeve 102 of the mechanism. Under the action of an external force, the upper limit sleeve 102 of the mechanism is pushed upward, driving the main pull rod 101 of the mechanism to move upward, thereby realizing the emergency opening operation.

Claims

1. A two-speed control mechanism with a manual separation device, characterized in that, It includes a repulsive force mechanism, one end of the repulsive force mechanism is connected with a permanent magnet mechanism, and also includes a main pull rod (101) of the mechanism. The main pull rod (101) respectively passes through the centers of the repulsive force mechanism and the permanent magnet mechanism movably. One end of the main pull rod (101) close to the repulsive force mechanism is connected with an adapter block (114). One end of the permanent magnet mechanism far from the repulsive force mechanism is also fixed with an emergency opening component by a first bolt.

2. The two-speed control mechanism with a hand separation device according to claim 1, characterized in that The repulsive force mechanism includes a repulsive force mechanism mounting base (115). The repulsive force mechanism mounting base (115) has a cross-sectional inverted "T" shape. The horizontal part of the repulsive force mechanism mounting base (115) is connected with a lower bracket (113) by a second bolt. One end of the mechanism mounting base (115) close to the lower bracket (113) is provided with a cavity. A repulsive force opening coil (111) is arranged on the bracket (113). The repulsive force opening coil (111) is located in the cavity. A repulsive force disc (110) is fixedly sleeved on the main pull rod (101) of the mechanism. The repulsive force disc (110) is located in the cavity. The main pull rod (101) of the mechanism passes through the centers of the lower bracket (113) and the repulsive force opening coil (111) movably. A guide sleeve (109) is fixedly penetrated through the center of the repulsive force mechanism mounting base (115). A permanent magnet limit sleeve (108) passes through the center of the guide sleeve (109) movably. The main pull rod (101) of the mechanism is fixedly penetrated through the center of the permanent magnet limit sleeve (108).

3. The two-speed control mechanism with a hand separation device according to claim 2, characterized in that, The lower bracket (113) is arranged parallel to the horizontal part of the repulsive force mechanism mounting base (115). A repulsive force washer (112) is sleeved on the upper edge of the repulsive force opening coil (111).

4. The two-speed control mechanism with a hand separation device according to claim 2, characterized in that, The permanent magnet mechanism includes a magnetic cylinder (116). The magnetic cylinder (116) is bonded to one end of the repulsive force mechanism mounting base (115) far from the lower bracket (113). An inner cavity is opened in the center of the magnetic cylinder (116). A "T" - shaped moving iron core (105) is also sleeved on the main pull rod (101) of the mechanism. The moving iron core (105) is located in the inner cavity of the magnetic cylinder (116). The outer diameter of the smaller - diameter end of the moving iron core (105) is the same as and connected to the outer diameter of the smaller - diameter end of the repulsive force mechanism mounting base (115). A permanent magnet coil (107) is arranged on the inner wall of the magnetic cylinder (116). A part of the permanent magnet coil (107) is sleeved on the outside of the smaller - diameter end of the moving iron core (105), and a part is sleeved on the outside of the smaller - diameter end of the repulsive force mechanism mounting base (115). One end of the moving iron core (105) far from the repulsive force mechanism mounting base (115) is a switching magnetic circuit maintaining component. A magnetic yoke (106) and a permanent magnet (117) are sequentially sleeved from the inside to the outside between the smaller - diameter end of the moving iron core (105) and the inner wall of the magnetic cylinder (116). A moving iron core limit sleeve (104) is also fitted and sleeved on the inner wall of the magnetic cylinder (116). The inner wall of the moving iron core limit sleeve (104) is in fitting contact with the larger - diameter end of the moving iron core (105). The length of the moving iron core limit sleeve (104) is greater than the length of the larger - diameter end of the moving iron core (105). One end of the magnetic cylinder (116) away from the repulsive force mechanism mounting base (115) is connected with a mechanism upper support (103) through a third bolt. A mechanism upper limit sleeve (102) is movably penetrated through the center of the mechanism upper support (103). The mechanism main pull rod (101) is fixedly penetrated through the mechanism upper limit sleeve (102). A boss is provided at one end of the mechanism upper limit sleeve (102) away from the repulsive force mechanism. A fixing nut is also fixedly sleeved on the mechanism main pull rod (101). The lower end surface of the fixing nut contacts the upper end surface of the boss. The emergency tripping assembly is arranged on the mechanism upper support (103) through a first bolt.

5. The two-speed control mechanism with a hand separation device according to claim 4, characterized in that, The magnetic yoke (106) and the permanent magnet (117) have the same length. The sum of the lengths of the magnetic yoke (106) and the permanent magnet coil (107) is equal to the sum of the lengths of the smaller diameter end of the moving iron core (105) and the smaller diameter end of the repulsive force mechanism mounting base (115).

6. The two-speed control mechanism with a hand separation device according to claim 4, characterized in that, The tripping magnetic circuit maintaining assembly includes two magnetic separation plates (118). A magnetic conduction plate (119) is provided between the two magnetic separation plates (118).

7. The two-speed control mechanism with a hand separation device according to claim 4, characterized in that, The emergency tripping assembly includes two emergency tripping blocks (120). The two emergency tripping blocks (120) are respectively fixed on the mechanism upper support (103) through first bolts. It also includes an emergency tripping shaft pin (121). The emergency tripping shaft pin (121) is rotatably penetrated through the two emergency tripping blocks (120). One end of the emergency tripping shaft pin (121) is connected with a hexagonal rotating block (123). The other end of the emergency tripping shaft pin (121) is connected with an eccentric wheel (122). The part with a smaller diameter of the eccentric wheel (122) contacts the lower end surface of the boss on the mechanism upper limit sleeve (102).

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