Rotary isolating switch

Abstract

The present invention relates to a rotary isolating switch, comprising a housing assembly, and an operating mechanism and an energy storage mechanism which are arranged in the housing assembly; and further comprising a lockout mechanism, the lockout mechanism comprising a second driving mechanism, and the second driving mechanism having a locked state and an unlocked state. When the operating mechanism is in an open state, the energy storage mechanism is in an energy-released state, and the second driving mechanism is in a locked state, the operating mechanism cannot be driven to switch the operating mechanism from the open state to a closed state and to switch the energy storage mechanism from the energy-released state to an energy-stored state. When the operating mechanism is in the open state, the energy storage mechanism is in the energy-released state, and the second driving mechanism is in the unlocked state, the operating mechanism can be driven to switch the operating mechanism from the open state to the closed state and to switch the energy storage mechanism from the energy-released state to the energy-stored state. By additionally providing the lockout mechanism, the rotary isolating switch, upon rapid energy release and opening in response to a fault signal or a remote control instruction, is prevented from being manually closed, thereby avoiding safety accidents resulting from misoperation.

Description

Rotary disconnect switch Technical Field

[0001] This invention relates to a rotary disconnect switch. Background Technology

[0002] The applicant's prior patent CN202321023758.8 discloses a rotary switch that can be quickly cut off, including a housing, an operating mechanism, and an energy storage mechanism. The energy storage mechanism works in conjunction with a drive device. Under normal circumstances, the energy storage mechanism stores energy, and the knob realizes the opening and closing of the switch assembly through the operating mechanism. In the event of a circuit fault, the energy storage mechanism releases energy and drives the operating shaft in the closed state to rotate to the open state, thereby realizing the rapid opening and cutting off of the circuit.

[0003] The applicant's prior patent CN202310606424.1 discloses a rotary disconnect switch, including a knob, a free trip structure, and a switch assembly. The knob drives the switch assembly through the free trip structure, and a trip unit that cooperates with the free trip structure is provided to receive fault signals or remote control signals to achieve rapid tripping and disconnection of the circuit.

[0004] Both of the above structures are technical solutions designed by the applicant to achieve rapid circuit disconnection, especially for remote control. Furthermore, both structures include a knob-based reset mechanism for reconnection. If the circuit is not in a dangerous condition, on-site personnel may unknowingly turn the knob, restoring power to the circuit, posing a safety hazard. Technical issues

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a rotary disconnect switch. Technical solutions

[0006] The technical solution adopted by the present invention is as follows: a rotary disconnect switch, comprising a housing assembly and an operating mechanism and an energy storage mechanism disposed within the housing assembly;

[0007] The operating mechanism has a closed state and a closed state;

[0008] The energy storage mechanism has an energy storage state and an energy release state. When the energy storage mechanism is in the energy storage state, the operating mechanism can switch normally between the closing state and the opening state. When the operating mechanism is in the closing state and the energy storage mechanism switches from the energy storage state to the energy release state, the operating mechanism switches to the opening state under the action of the energy storage mechanism.

[0009] It also includes a padlock mechanism, which includes a second drive mechanism having a padlock state and an unlock state. When the operating mechanism is in the open state, the energy storage mechanism is in the energy release state, and the second drive mechanism is in the padlock state, the operating mechanism cannot be driven to switch from the open state to the closed state, and the energy storage mechanism cannot switch from the energy release state to the energy storage state. When the operating mechanism is in the open state, the energy storage mechanism is in the energy release state, and the second drive mechanism is in the unlock state, the operating mechanism can be switched from the open state to the closed state, and the energy storage mechanism can switch from the energy release state to the energy storage state by driving the operating mechanism.

[0010] Preferably, the second drive mechanism is provided with a second port for receiving control signals, including padlock control signals, which are fault signals or remote control command signals. When the second drive mechanism receives the padlock control signal, the second drive mechanism switches from the unlocked state to the padlocked state.

[0011] Preferably, the second driving mechanism includes an electromagnetic coil fixing member and an electromagnetic driving block with an electromagnetic coil fixed thereon. A second action spring is provided between the electromagnetic coil fixing member and the electromagnetic driving block. The electromagnetic coil fixing member is at least partially made of a magnetically conductive material, and the electromagnetic driving block is at least partially made of a permanent magnet. The shell made of the magnetically conductive material has an attraction force with the electromagnetic driving block, and the attraction force is greater than the thrust of the second action spring after energy storage. When the second driving mechanism receives a padlock control signal, the electromagnetic coil is energized to form a magnetic field, and the direction of the magnetic field forms a repulsive force on the electromagnetic driving block away from the electromagnetic coil, causing the electromagnetic driving block to move away from the electromagnetic coil fixing member.

[0012] Preferably, it also includes a manual reset mechanism, which includes a push rod provided with an electromagnetic drive block corresponding to the second drive mechanism. By pressing the push rod, the electromagnetic drive block can be reset and re-attached to the electromagnetic coil fixing member.

[0013] The push rod passes through the housing assembly, or the housing assembly has a drive through hole corresponding to the push rod.

[0014] Preferably, the second drive mechanism cooperates with the energy storage mechanism, and the second drive mechanism switches from the unlocked state to the padlock state, and the second drive mechanism drives the energy storage mechanism to switch from the energy storage state to the energy release state.

[0015] Preferably, it further includes a first drive mechanism, which cooperates with the energy storage mechanism. The first drive mechanism is provided with a first port for receiving control signals. The control signals are fault signals or remote control command signals. When the first drive mechanism receives the control signal, the first drive mechanism operates to switch the energy storage mechanism from the energy storage state to the energy release state.

[0016] Preferably, the operating mechanism includes a stop, a first operating shaft, a first energy storage element, and an operating rotary seat arranged in sequence. The first energy storage element is disposed between the first operating shaft and the operating rotary seat, and is used to store energy when the first operating shaft rotates to open or close the circuit breaker, and to release energy to drive the operating rotary seat to rotate when the first operating shaft completes or is close to completing the opening or closing action. When the second drive mechanism is activated, the swing rod cooperates with the first energy storage element in the open state, so that the first energy storage element cannot be activated.

[0017] Preferably, the energy storage mechanism includes a second energy storage element, a second operating shaft, a rack, and an energy storage lock block. The second operating shaft is used to connect to a manual operating handle or an electric operating mechanism. The second operating shaft has a gear structure that meshes with the rack. A swing rod is provided between the second drive mechanism and the rack. When the second drive mechanism is activated, the swing rod engages with the rack in the open state, preventing the rack from moving to the closed state.

[0018] Preferably, the operating mechanism and the energy storage mechanism are connected to form a free-release structure, including a four-bar operating mechanism and an energy storage mechanism consisting of a latch, a jump latch, and an energy storage spring;

[0019] A connecting rod is provided between the second drive mechanism and the latch. When the second drive mechanism is activated, it pushes the connecting rod and holds it in place so that the connecting rod cannot rotate, thus preventing the latch from rotating under the action of the connecting rod.

[0020] Preferably, it further includes a second operating shaft for connecting to a manual operating handle or an electric operating mechanism. The upper end of the second operating shaft is provided with a first limiting block, and the second drive mechanism is provided with a blocking member. When the second drive mechanism is not in operation, the blocking member is set to avoid the movement trajectory of the first limiting block, so that the second operating shaft can rotate normally to open and close the circuit. When the second drive mechanism is in operation, the blocking member moves to the movement trajectory of the first limiting block and blocks the first limiting block, so that the second operating shaft located in the open position cannot rotate to the closed position. Beneficial effects

[0021] The beneficial effects of the present invention are as follows: Based on the existing structure of rotary disconnect switches, the present invention adds a padlock mechanism. Through this padlock mechanism, when the rotary disconnect switch is quickly opened under fault signal or remote control command, it cannot be manually closed again, thus avoiding safety accidents caused by misoperation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of the present invention.

[0023] Figure 1 is a structural schematic diagram of Embodiment 1;

[0024] Figure 2 is a schematic diagram of the internal structure of Embodiment 1 from one angle;

[0025] Figure 3 is a schematic diagram of the swing rod in Example 1;

[0026] Figure 4 is a schematic diagram of the internal structure of Example 1 from another angle;

[0027] Figure 5 is a schematic diagram of the connecting rod in Embodiment 1;

[0028] Figure 6 is a structural schematic diagram of Example 2;

[0029] Figure 7 is a schematic diagram of the internal structure of Example 2 from one angle;

[0030] Figure 8 is an exploded view of the internal structure of Example 2;

[0031] Figure 9 is a schematic diagram of the rack structure in Example 2;

[0032] Figure 10 is a schematic diagram of the swing rod in Embodiment 2;

[0033] Figure 11 is an explosion diagram of Example 3;

[0034] Figure 12 is a partial structural schematic diagram of Example 3;

[0035] Figure 13 is a schematic diagram of the swing rod in Embodiment 3;

[0036] Figure 14 is an explosion diagram of Example 4;

[0037] Figure 15 is a partial structural schematic diagram of Example 4;

[0038] Figure 16 is a schematic diagram of a partial structural explosion in Example 4;

[0039] Figure 17 is a structural schematic diagram of Example 5;

[0040] Figure 18 is a schematic diagram of the swing rod in Embodiment 5;

[0041] In the figure, housing assembly - 100; drive through hole - 110; first operating shaft - 210; first energy storage element - 220; operating rotary seat - 230; second operating shaft - 310; reset transmission block - 311; first limit block - 312; rack - 320; first mating lock groove - 321; energy storage lock block - 330; latch - 340; first drive mechanism - 400; first port - 410; connecting rod - 500; hinge part - 510; first push part - 520; drive part - 530; Second push part - 540; reset transmission part - 600; second drive mechanism - 700; second port - 710; electromagnetic coil fixing part - 720; electromagnetic drive block - 730; second action spring - 740; push rod - 750; second limit block - 760; limit groove - 761; blocking part - 770; magnetic shielding pad - 780; swing rod - 800; second hinge part - 810; third push part - 820; locking part - 830; first action spring - 840; knob - 900. The best embodiment of the present invention

[0042] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0043] It should be noted that all uses of "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of the present invention. Subsequent embodiments will not explain this in detail.

[0044] The directional and positional terms used in this invention, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for illustrating and understanding this invention, and not for limiting the scope of protection of this invention. Example

[0045] This embodiment provides a rotary disconnect switch, as shown in Figures 1-5, including a housing assembly 100 and an operating mechanism, an energy storage mechanism, and a first drive mechanism 400 disposed within the housing assembly 100. The specific structures of the operating mechanism, the energy storage mechanism, and the first drive mechanism 400 are substantially the same as those in the applicant's prior disclosed patent CN202321023758.8.

[0046] Specifically, the operating mechanism includes a stop, a first operating shaft 210, a first energy storage element 220, and an operating rotary seat 230 arranged sequentially. The first energy storage element 220 is disposed between the first operating shaft 210 and the operating rotary seat 230, and is used to store energy when the first operating shaft 210 rotates to open or close the circuit breaker, and to release energy to drive the operating rotary seat 230 to rotate when the first operating shaft 210 completes or is close to completing the opening or closing action. The specific cooperation structure between the stop, the first operating shaft 210, the first energy storage element 220, and the operating rotary seat 230 is not described in detail here. For details, please refer to the relevant structure described in the specification of patent CN202321023758.8.

[0047] Specifically, the energy storage mechanism includes a second energy storage element, a second operating shaft 310, a rack 320, and an energy storage lock block 330. The second operating shaft 310 is coaxially connected to the first operating shaft 210 and the two are circumferentially linked. At the same time, the second operating shaft 310 extends out of the housing to connect with a manual operating handle or an electric operating mechanism to realize the opening and closing operation. The second energy storage element is a torsion spring sleeved on the second operating shaft 310, and its two ends are respectively engaged with the inner wall of the housing and the rack 320. The energy storage lock block 330 is used to lock the second energy storage element in the energy storage state. The second operating shaft 310 has a gear structure that meshes with the rack 320. When the energy storage lock block 330 moves to release the locking effect on the second energy storage element in the energy storage state, the second energy storage element in the energy storage state releases energy to push the rack 320, causing the second operating shaft 310 and the first energy storage element 220 to rotate, thereby realizing the opening and power disconnection. The specific cooperation structure between the second energy storage element, the second operating shaft 310, the rack 320, and the energy storage lock block 330 will not be described in detail here. For details, please refer to the relevant structure described in the specification of patent CN202321023758.8.

[0048] The first drive mechanism 400 is an electromagnetic drive mechanism, equipped with a first port 410 for receiving control signals. The control signals can cause the first drive mechanism 400 to move, driving the energy storage lock block 330. Specifically, a connecting rod 500 is provided between the first drive mechanism 400 and the energy storage lock block 330, as shown in Figure 5. The connecting rod 500 has a first hinge portion 510 for hinged connection with the housing assembly 100, a first pushing portion 520 corresponding to the first drive mechanism 400, and a driving portion 530 corresponding to the energy storage lock block 330. When the first drive mechanism 400 moves, it drives the energy storage lock block 330 to a position that releases the locking effect on the second energy storage element in the energy storage state via the connecting rod 500. The energy storage mechanism then releases energy, thus achieving power disconnection.

[0049] Meanwhile, a reset transmission member 600 is provided between the first drive mechanism 400 and the second operating shaft 310 to reset the first drive mechanism 400. That is, by rotating the second operating shaft 310 from the open position to the closed position, the first drive mechanism 400 can be reset, the second energy storage element can store energy, and the switching unit can be closed. The specific structure of the reset transmission member 600 can be referred to the relevant structure described in the specification of patent CN202111031928.2, and will not be described in detail here.

[0050] After a fault occurs, a control signal is sent to the first drive mechanism 400, causing the second energy storage element to release energy and thus quickly disconnect the circuit breaker. After the fault is cleared, the circuit breaker can be closed and the second energy storage element and the first drive mechanism 400 can be reset by rotating the second operating shaft 310.

[0051] This embodiment adds a padlock mechanism within the housing assembly 100, based on the above structure. This padlock mechanism prevents the switch from being closed and reset, avoiding accidental operation and ensuring power is supplied even if the fault has not been resolved. Specifically, the padlock mechanism includes a second drive mechanism 700, which has a second port 710 for receiving control signals. The second drive mechanism 700 cooperates with the operating mechanism; when it receives a control signal, it activates to prevent the operating mechanism from rotating from the open position to the closed position, thus preventing accidental operation after a major fault.

[0052] Specifically, as shown in Figure 2, a swing rod 800 is provided between the second drive mechanism 700 and the first energy storage element 220. When the second drive mechanism 700 is activated, the swing rod 800 cooperates with the first energy storage element 220, which is in the open state, so that the first energy storage element 220 cannot be activated.

[0053] Specifically, the first energy storage element 220 is an energy storage torsion spring, which includes two torsion arms. The two torsion arms move sequentially during the opening and closing operation to complete energy storage / release. As shown in Figure 3, the swing rod 800 has a second hinge part 810 that is hinged to the housing assembly 100, a third push part 820 corresponding to the second drive mechanism 700, and a locking part 830 corresponding to the first energy storage element 220 in the middle. A first action spring 840 acts on the swing rod 800 to keep the locking part 830 away from the first energy storage element 220 so as not to interfere with its normal operation. When the second drive mechanism 700 receives a control signal and causes it to operate, as shown in Figure 2, the second drive mechanism 700 drives the third push part 820, and the locking part 830 moves downward to hook one of the torsion arms of the first energy storage element 220, preventing the first energy storage element 220 from operating. This prevents the entire operating mechanism from performing the closing operation, thus forming a padlock function.

[0054] Furthermore, the second driving mechanism 700 in this embodiment includes an electromagnetic coil fixing member 720 and an electromagnetic driving block 730, with an electromagnetic coil fixing member 720 and an electromagnetic driving block 730 respectively. A second actuating spring 740 is provided between the electromagnetic coil fixing member 720 and the electromagnetic driving block 730. In this embodiment, the electromagnetic coil fixing member 720 is made of a magnetically conductive material such as low-carbon steel or electrical pure iron to form a housing. The electromagnetic coil is fixed inside the housing. The electromagnetic driving block 730 is at least partially made of a permanent magnet. The housing made of the magnetically conductive material has an attractive force with the electromagnetic driving block 730. The force of attraction is greater than the thrust of the second action spring 740 after energy storage, ensuring that the shell made of magnetically conductive material and the electromagnetic drive block 730 maintain an attractive relationship in the initial state. When the second drive mechanism 700 receives the padlock control signal, the electromagnetic coil is energized to form a magnetic field, and the direction of the magnetic field forms a repulsive force on the electromagnetic drive block 730 away from the electromagnetic coil. The sum of the repulsive force and the thrust of the second action spring 740 after energy storage is greater than the attraction force between the shell made of magnetically conductive material and the electromagnetic drive block 730, so that the electromagnetic drive block 730 can be moved.

[0055] Furthermore, this embodiment provides a manual reset mechanism for the second drive mechanism 700. Specifically, as shown in Figures 1 and 2, a push rod 750 is provided below the electromagnetic drive block 730 of the second drive mechanism 700, and the push rod 750 extends out of the housing assembly 100. By pressing the push rod 750, the electromagnetic drive block 730 can be reset and re-attracted to the electromagnetic coil fixing member 720.

[0056] Furthermore, the connecting rod 500 in this embodiment is also provided with a second pushing part 540 corresponding to the second driving mechanism 700. As shown in FIG4, the second driving mechanism 700 pushes the second pushing part 540, and drives the energy storage lock block 330 to move to the position of releasing the locking effect on the second energy storage element in the energy storage state through the connecting rod 500.

[0057] In this embodiment, the activation of both the first drive mechanism 400 and the second drive mechanism 700 can release energy from the energy storage mechanism, thereby achieving power disconnection. If only the first drive mechanism 400 is activated, the circuit breaker can be closed and the energy storage mechanism reset by rotating a knob. However, if only the second drive mechanism 700 is activated, the circuit breaker cannot be closed and the energy storage mechanism reset by rotating a knob; the second drive mechanism 700 must first be manually reset by pushing the push rod 750 before the circuit breaker can be closed and the energy storage mechanism reset by rotating a knob. In this embodiment, the activation of the first drive mechanism 400, the second drive mechanism 700, or both can be activated simultaneously, or only the first drive mechanism 400 can be activated, can be selected based on the severity of the fault. Additionally, the second drive mechanism 700 can be remotely controlled via signals. Different fault signals can cause the first drive mechanism 400 and the second drive mechanism 700 to activate automatically, or control signals can be remotely sent manually based on the fault condition to activate the first drive mechanism 400 and the second drive mechanism 700. Example

[0058] This embodiment provides a rotary disconnect switch, as shown in Figures 6-10, including a housing assembly 100 and an operating mechanism, an energy storage mechanism, a first drive mechanism 400, and a padlock mechanism disposed within the housing assembly 100. The specific structures of the operating mechanism, the energy storage mechanism, and the first drive mechanism 400 are the same as in Embodiment 1, and will not be described in detail.

[0059] The difference between this embodiment and Embodiment 1 lies in the specific structure of the padlock mechanism. The padlock mechanism includes a second drive mechanism 700, which has a second port 710 for receiving control signals. The second drive mechanism 700 cooperates with the energy storage mechanism. When the second drive mechanism 700 receives the padlock control signal, it performs an action to prevent the energy storage mechanism from switching from the energy release open state to the energy storage closed state, thus avoiding misoperation after a major fault.

[0060] Specifically, as shown in Figure 7, a swing rod 800 is provided between the second drive mechanism 700 and the rack 320. When the second drive mechanism 700 is activated, the swing rod 800 cooperates with the rack 320, which is in the open state, so that the rack 320 cannot move to the closed state, thereby preventing the second operating shaft 310 from rotating to the closed state.

[0061] Specifically, as shown in Figure 10, the swing rod 800 has a second hinge part 810 that is hinged to the housing assembly 100, a third push part 820 corresponding to the second drive mechanism 700, and a locking part 830 corresponding to the rack 320 in the middle. The rack 320 has a first locking groove 321 on one side. When the second drive mechanism 700 receives a padlock control signal and causes it to move, as shown in Figure 7, the second drive mechanism 700 drives the third push part 820 and the locking part 830 to rotate into the first locking groove 321, so that the rack 320 can no longer move left or right, thereby preventing the entire energy storage mechanism and operating mechanism from performing the closing action, thus forming a padlock function.

[0062] Specifically, as shown in Figures 6 and 7, the second driving mechanism 700 includes an electromagnetic coil fixing member 720 with an electromagnetic coil fixed thereon and an electromagnetic driving block 730. A second actuating spring 740 is provided between the electromagnetic coil fixing member 720 and the electromagnetic driving block 730. In this embodiment, the electromagnetic coil fixing member 720 is made of a magnetically conductive material such as low-carbon steel or electrical pure iron to form a housing. The electromagnetic coil is fixed inside the housing. The electromagnetic driving block 730 is at least partially made of a permanent magnet. The housing made of the magnetically conductive material has an attractive force with the electromagnetic driving block 730. The adsorption force is greater than the thrust of the second action spring 740 after energy storage, ensuring that the shell made of magnetically conductive material and the electromagnetic drive block 730 maintain an adsorption relationship in the initial state. When the second drive mechanism 700 receives the padlock control signal, the electromagnetic coil is energized to form a magnetic field, and the direction of the magnetic field forms a repulsive force on the electromagnetic drive block 730 away from the electromagnetic coil. The sum of the repulsive force and the thrust of the second action spring 740 after energy storage is greater than the adsorption force between the shell made of magnetically conductive material and the electromagnetic drive block 730, so that the electromagnetic drive block 730 can be moved.

[0063] In this embodiment, the front end of the electromagnetic drive block 730 is fixed with a second limiting block 760, and a limiting groove 761 is formed between the second limiting block 760 and the electromagnetic drive block 730. The third pushing part 820 is a folded strip that extends into the limiting groove 761, and the two form a linkage cooperation.

[0064] Similarly, this embodiment provides a manual reset mechanism for the second drive mechanism 700. Specifically, as shown in Figures 6 and 7, a push rod 750 is provided on the outer side of the second limiting block 760 of the second drive mechanism 700, and the push rod 750 extends out of the housing assembly 100. By pressing the push rod 750, the second limiting block 760 can be reset with the electromagnetic drive block 730 and re-attracted to the electromagnetic coil fixing member 720.

[0065] In this embodiment, only the action of the first drive mechanism 400 can release energy from the energy storage mechanism, thereby achieving power disconnection. The power can be closed and the energy storage mechanism can be reset by rotating the knob. The action of the second drive mechanism 700 cannot achieve energy storage and release, thus achieving power disconnection. The first drive mechanism 400 and the second drive mechanism 700 must act synchronously or sequentially to achieve power disconnection. The padlock cannot be closed and the energy storage mechanism can not be reset by rotating the knob. The second drive mechanism 700 must be manually pushed to reset by the push rod 750 before the power can be closed and the energy storage mechanism can be reset by rotating the knob. In this embodiment, the first drive mechanism 400 can be activated, or the first drive mechanism 400 and the second drive mechanism 700 can be activated synchronously, or the first drive mechanism 400 can be activated, depending on the severity of the fault. In addition, the second drive mechanism 700 can be activated by remote signal control. The first drive mechanism 400 and the second drive mechanism 700 can be activated automatically by different fault signals, or the first drive mechanism 400 and the second drive mechanism 700 can be activated by manually sending control signals remotely based on the fault situation. Example

[0066] This embodiment provides a rotary disconnect switch, as shown in Figures 11-12, which includes a housing assembly 100 and an operating mechanism, an energy storage mechanism, and a first drive mechanism 400 disposed within the housing assembly 100.

[0067] In this embodiment, the operating mechanism and the energy storage mechanism are connected together to form a free-tripping structure, including a four-bar operating mechanism and an energy storage mechanism consisting of a latch 340, a trip latch, and an energy storage spring. When the latch 340 and the trip latch are engaged, the energy storage spring stores energy, and the action of the four-bar operating mechanism drives the switch unit to open and close. When the latch 340 and the trip latch are disengaged, the trip latch and the four-bar operating mechanism form a five-bar mechanism, the energy storage spring releases energy, and the five-bar mechanism quickly completes the tripping and opening. The specific structure is the same as that disclosed in the applicant's prior patent CN202310606424.1, and will not be described in detail.

[0068] A first transmission assembly is provided between the free-tripping structure and the knob 900. Specifically, it includes a second operating shaft 310 and a rack 320. The second operating shaft 310 is circumferentially linked with the knob 900 and has a gear structure that meshes with the rack 320. The rack 320 cooperates with the operating mechanism so that the knob 900, the second operating shaft 310, and the rack 320 sequentially drive the operating mechanism to perform opening and closing actions.

[0069] The first drive mechanism 400 cooperates with the latch 340 to drive the latch 340 to rotate and achieve tripping. The first drive mechanism 400 is an electromagnetic drive mechanism and is provided with a first port 410 for receiving control signals. The control signals can cause the first drive mechanism 400 to move and drive the latch 340 to move. Specifically, as shown in Figure 12, a connecting rod 500 is provided between the first drive mechanism 400 and the latch 340. As shown in Figure 13, the connecting rod 500 is provided with a first hinge part 510 for hinged connection with the housing assembly 100, a first push part 520 corresponding to the first drive mechanism 400, and a drive part 530 corresponding to the latch 340. The movement of the first drive mechanism 400 drives the latch 340 to disengage from the tripping latch through the transmission of the connecting rod 500.

[0070] When the knob 900 is turned to close the circuit, the free-tripping mechanism can complete the locking 340, tripping and re-locking, and the energy storage spring can complete energy storage. At the same time, the second operating shaft 310 is equipped with a reset transmission block 311 that cooperates with the first drive mechanism 400. By rotating the second operating shaft 310, the reset transmission block 311 can drive the drive rod of the first drive mechanism 400 to complete the magnetic adsorption reset.

[0071] Upon the occurrence of a fault, a control signal is sent to the first drive mechanism 400, causing the latch 340 and trip latch to disengage, the energy storage spring to release energy, and thus quickly tripping and cutting off power. After the fault is cleared, rotating the second operating shaft 310 can re-engage the latch 340 and trip latch, re-store energy in the energy storage spring, and reset the first drive mechanism 400.

[0072] This embodiment adds a padlock mechanism within the housing assembly 100, based on the above structure. This padlock mechanism prevents the switch from being closed and reset, avoiding accidental operation and preventing power from being applied before the fault is resolved. Specifically, the padlock mechanism includes a second drive mechanism 700, which has a second port 710 for receiving control signals. The second drive mechanism 700 cooperates with the free-release structure. When the second drive mechanism 700 receives a padlock control signal, it activates, preventing the free-release structure from closing and reclosing, thus avoiding accidental operation after a major fault.

[0073] Specifically, the second drive mechanism 700 is located outside the first drive mechanism 400. The connecting rod 500 extends outward from the first push part 520 to form a second push part 540 corresponding to the second drive mechanism 700. When the second drive mechanism 700 is activated, it presses against the second push part 540, preventing the connecting rod 500 from rotating. The latch 340 and the trip latch need to rotate to complete the re-locking. The latch 340 cannot rotate under the action of the connecting rod 500, thus preventing the latch 340 and the trip latch from completing the re-locking, and the switch unit cannot close.

[0074] The second driving mechanism 700 includes an electromagnetic coil fixing member 720 with an electromagnetic coil fixed thereon and an electromagnetic driving block 730. A second action spring 740 is provided between the electromagnetic coil fixing member 720 and the electromagnetic driving block 730. In this embodiment, the electromagnetic coil fixing member 720 is made of a magnetically conductive material such as low-carbon steel or electrical pure iron to form a housing. The electromagnetic coil is fixed inside the housing. The electromagnetic driving block 730 is at least partially made of a permanent magnet. The housing made of the magnetically conductive material has an attractive force with the electromagnetic driving block 730, and the attractive force is greater than the pushing force of the second action spring 740 after energy storage, ensuring that the housing made of the magnetically conductive material and the electromagnetic driving block 730 maintain an attractive relationship in the initial state. When the second driving mechanism 700 receives a padlock control signal, the electromagnetic coil is energized to form a magnetic field, and the direction of the magnetic field forms a repulsive force away from the electromagnetic driving block 730. The sum of the repulsive force and the pushing force of the second action spring 740 after energy storage is greater than the attractive force between the housing made of the magnetically conductive material and the electromagnetic driving block 730, thus pushing the electromagnetic driving block 730 to move.

[0075] Furthermore, this embodiment provides a manual reset mechanism for the second drive mechanism 700. Specifically, as shown in Figures 11 and 12, a push rod 750 is provided on the outer side of the electromagnetic drive block 730 of the second drive mechanism 700. The housing assembly 100 is provided with a drive through hole 110 corresponding to the push rod 750. By pressing the push rod 750 through the drive through hole 110, the electromagnetic drive block 730 can be reset and re-attracted to the electromagnetic coil fixing member 720.

[0076] In this embodiment, both the activation of the first drive mechanism 400 and the activation of the second drive mechanism 700 can achieve the locking 340 and tripping release, completing the tripping and opening of the circuit breaker. When only the first drive mechanism 400 is activated, the circuit breaker can be re-engaged, closed, and the energy storage mechanism reset by rotating a knob. When only the second drive mechanism 700 is activated, the circuit breaker cannot be re-engaged, closed, or the energy storage mechanism reset by rotating a knob; the second drive mechanism 700 must first be manually reset by pushing the push rod 750 before the circuit breaker can be re-engaged, closed, and the energy storage mechanism reset by rotating a knob. In use, this embodiment allows selection of the activation of either the first drive mechanism 400 or the second drive mechanism 700, or simultaneous activation of the first and second drive mechanisms 400 or 700, or activation of the first drive mechanism 400, depending on the severity of the fault. Additionally, the second drive mechanism 700 can be remotely controlled via signals. Different fault signals can cause the first drive mechanism 400 and / or the second drive mechanism 700 to activate automatically, or control signals can be remotely sent manually based on the fault condition to activate the first drive mechanism 400 and / or the second drive mechanism 700. Example

[0077] This embodiment provides a rotary disconnect switch, as shown in Figures 14-16, including a housing assembly 100 and an operating mechanism, an energy storage mechanism, a first drive mechanism 400, a padlock mechanism, and a knob 900 disposed within the housing assembly 100. The specific structures of the housing assembly 100, the operating mechanism, and the energy storage mechanism are the same as in Embodiment 3, and will not be described in detail.

[0078] A first transmission assembly is provided between the free-tripping structure and the knob 900. Specifically, it includes a second operating shaft 310 and a rack 320. The second operating shaft 310 is circumferentially linked with the knob 900 and has a gear structure that meshes with the rack 320. The rack 320 cooperates with the operating mechanism so that the knob 900, the second operating shaft 310, and the rack 320 sequentially drive the operating mechanism to perform opening and closing actions.

[0079] When the knob 900 is turned to close the circuit, the free-tripping mechanism can complete the locking 340, tripping and re-locking, and the energy storage spring completes energy storage. At the same time, the second operating shaft 310 is equipped with a reset transmission block 311 that cooperates with the first drive mechanism 400. When the second operating shaft 310 is rotated, the reset transmission block 311 drives the drive rod of the first drive mechanism 400 to complete the magnetic adsorption reset.

[0080] The difference between this embodiment and Embodiment 3 lies in the specific structure of the padlock mechanism. The padlock mechanism includes a second drive mechanism 700, which has a second port 710 for receiving control signals. The second drive mechanism 700 cooperates with the first transmission assembly. When the second drive mechanism 700 receives a padlock control signal, it activates, preventing the first transmission assembly from operating and avoiding misoperation in the event of a major malfunction.

[0081] Specifically, as shown in Figures 15 and 16, the upper end of the second operating shaft 310 is provided with a first limiting block 312, and the position of the second driving mechanism 700 is set corresponding to the first limiting block 312 of the second operating shaft 310.

[0082] Specifically, the second driving mechanism 700 includes an electromagnetic coil fixing member 720 and an electromagnetic driving block 730, with a second actuating spring 740 between the electromagnetic coil fixing member 720 and the electromagnetic driving block 730. In this embodiment, the electromagnetic coil fixing member 720 is made of a magnetically conductive material such as low-carbon steel or electrical pure iron, and the electromagnetic coil is fixed inside the housing. The electromagnetic driving block 730 is at least partially made of a permanent magnet. The housing made of the magnetically conductive material has an attractive force with the electromagnetic driving block 730. The force of the second action spring 740 after energy storage is greater than the thrust of the second action spring 740, ensuring that the shell made of magnetically conductive material and the electromagnetic drive block 730 maintain an attractive relationship in the initial state. When the second drive mechanism 700 receives the padlock control signal, the electromagnetic coil is energized to form a magnetic field, and the direction of the magnetic field forms a repulsive force on the electromagnetic drive block 730 away from the electromagnetic coil. The sum of the repulsive force and the thrust of the second action spring 740 after energy storage is greater than the attractive force between the shell made of magnetically conductive material and the electromagnetic drive block 730, so that the electromagnetic drive block 730 can be moved.

[0083] The electromagnetic coil fixing member 720 is confined within the housing assembly 100. The front end of the electromagnetic drive block 730 is linked to a blocking member 770. When the second drive mechanism 700 is not in operation, the blocking member 770 is set to avoid the movement trajectory of the first limit block 312, so that the second operating shaft 310 can rotate normally for opening and closing. When the second drive mechanism 700 is in operation, the blocking member 770 moves to the movement trajectory of the first limit block 312, blocking the first limit block 312, so that the second operating shaft 310, which is in the closing position, cannot rotate to the opening position, thereby preventing the latch 340 and the trip latch from engaging and closing the circuit.

[0084] Furthermore, this embodiment provides a manual reset mechanism for the second drive mechanism 700. Specifically, as shown in Figures 15 and 16, a push rod 750 is provided on the outer side of the electromagnetic drive block 730 of the second drive mechanism 700. The housing assembly 100 is provided with a drive through hole 110 corresponding to the push rod 750. By pressing the push rod 750 through the drive through hole 110, the electromagnetic drive block 730 can be reset and re-attracted to the electromagnetic coil fixing member 720.

[0085] In this embodiment, only the action of the first drive mechanism 400 can realize the release of energy by the energy storage mechanism, thereby realizing the power-off. Moreover, the re-clamping, closing and energy storage mechanism energy storage reset can be realized by rotating the knob. The action of the second drive mechanism 700 cannot realize the release of energy storage and thus the power-off. The first drive mechanism 400 and the second drive mechanism 700 need to act synchronously or sequentially to realize the power-off. In addition, the padlock cannot realize the re-clamping, closing and energy storage mechanism energy storage reset by rotating the knob. The second drive mechanism 700 must be manually pushed to reset by the push rod 750 before the re-clamping, closing and energy storage mechanism energy storage reset can be realized by rotating the knob. In this embodiment, the first drive mechanism 400 can be activated, or the first drive mechanism 400 and the second drive mechanism 700 can be activated synchronously, or the first drive mechanism 400 can be activated, depending on the severity of the fault. In addition, the second drive mechanism 700 can be activated by remote signal control. The first drive mechanism 400 and the second drive mechanism 700 can be activated automatically by different fault signals, or the first drive mechanism 400 and the second drive mechanism 700 can be activated by manually sending control signals remotely based on the fault situation. Example

[0086] This embodiment provides a rotary disconnect switch, as shown in Figures 17-18, which includes a housing assembly 100 and an operating mechanism, an energy storage mechanism, and a first drive mechanism 400 disposed within the housing assembly 100.

[0087] The structure of this embodiment is roughly the same as that of embodiment 3. The main difference is that the second drive mechanism 700 in this embodiment is located at the upper end of the first drive mechanism 400. The connecting rod 500 bends upward at the first push part 520 to form a second push part 540 corresponding to the second drive mechanism 700. When the second drive mechanism 700 is activated, it presses against the second push part 540, preventing the connecting rod 500 from rotating. The latch 340 and the trip latch need to rotate to complete the re-locking. The latch 340 cannot rotate under the action of the connecting rod 500, thus preventing the latch 340 and the trip latch from completing the re-locking, and the switch unit cannot close.

[0088] Both the first drive mechanism 400 and the second drive mechanism 700 are electromagnetic drive mechanisms. In order to avoid interference between the electromagnetic fields of the two, a magnetic shielding plate 780 is provided between the first drive mechanism 400 and the second drive mechanism 700. The magnetic shielding plate 780 serves to fix the first drive mechanism 400 and the second drive mechanism 700 while preventing the electromagnetic fields between the first drive mechanism 400 and the second drive mechanism 700 from interfering with each other.

[0089] Similar to Embodiment 3, in this embodiment, the operation of the first drive mechanism 400 and the second drive mechanism 700 can both achieve the locking 340 and tripping, completing the tripping and opening. When only the first drive mechanism 400 is activated, the re-activation, closing, and energy storage mechanism reset can be achieved by rotating the knob. When only the second drive mechanism 700 is activated, the re-activation, closing, and energy storage mechanism reset cannot be achieved by rotating the knob. The second drive mechanism 700 must first be manually pushed and reset by the push rod 750 before the re-activation, closing, and energy storage mechanism reset can be achieved by rotating the knob. In this embodiment, depending on the severity of the fault, the first drive mechanism 400 can be activated, the second drive mechanism 700 can be activated, the first drive mechanism 400 and the second drive mechanism 700 can be activated synchronously, or the first drive mechanism 400 can be activated. In addition, the second drive mechanism 700 can be activated by remote signal control. The first drive mechanism 400 and / or the second drive mechanism 700 can be activated automatically by different fault signals, or the first drive mechanism 400 and / or the second drive mechanism 700 can be activated by manually sending control signals remotely based on the fault situation.

[0090] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, disk, optical disk, etc.

[0091] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A rotary disconnect switch, comprising a housing assembly and an operating mechanism and an energy storage mechanism disposed within the housing assembly; The operating mechanism has a closed state and a closed state; The energy storage mechanism has an energy storage state and an energy release state. When the energy storage mechanism is in the energy storage state, the operating mechanism can switch normally between the closing state and the opening state. When the operating mechanism is in the closing state and the energy storage mechanism switches from the energy storage state to the energy release state, the operating mechanism switches to the opening state under the action of the energy storage mechanism. Its features are: It also includes a padlock mechanism, which includes a second drive mechanism having a padlock state and an unlock state. When the operating mechanism is in the open state, the energy storage mechanism is in the energy release state, and the second drive mechanism is in the padlock state, the operating mechanism cannot be driven to switch from the open state to the closed state, and the energy storage mechanism cannot switch from the energy release state to the energy storage state. When the operating mechanism is in the open state, the energy storage mechanism is in the energy release state, and the second drive mechanism is in the unlock state, driving the operating mechanism can switch the operating mechanism from the open state to the closed state, and the energy storage mechanism can switch from the energy release state to the energy storage state. The cooperation structure between the padlock mechanism and the operating mechanism and / or energy storage mechanism is one of (A)-(D): (A) The operating mechanism includes a stop, a first operating shaft, a first energy storage element, and an operating rotary seat arranged in sequence. The first energy storage element is disposed between the first operating shaft and the operating rotary seat, and is used to store energy when the first operating shaft rotates to open or close the circuit and to release energy to drive the operating rotary seat to rotate when the first operating shaft completes or is close to completing the opening or closing action. A swing rod is provided between the second drive mechanism and the first energy storage element. When the second drive mechanism is activated, the swing rod cooperates with the first energy storage element in the open state, so that the first energy storage element cannot be activated. (B) The energy storage mechanism includes a second energy storage element, a second operating shaft, a rack, and an energy storage lock block. The operating mechanism includes a stop, a first operating shaft, a first energy storage element, and an operating rotary seat arranged in sequence. The second operating shaft and the first operating shaft are coaxially inserted and engaged, and the two are circumferentially linked. The second operating shaft is used to connect to a manual operating handle or an electric operating mechanism. The second operating shaft has a gear structure that meshes with the rack. A swing rod is provided between the second drive mechanism and the rack. When the second drive mechanism is activated, the swing rod engages with the rack in the open state, preventing the rack from moving to the closed state. (C) The operating mechanism and the energy storage mechanism are connected to form a free release structure, including a four-bar operating mechanism and an energy storage mechanism consisting of a latch, a jump latch, and an energy storage spring; A connecting rod is provided between the second drive mechanism and the latch. When the second drive mechanism is activated, the second drive mechanism pushes the connecting rod and presses against the connecting rod so that the connecting rod cannot rotate, so that the latch cannot rotate under the action of the connecting rod. (D) The operating mechanism and the energy storage mechanism are connected to form a free release structure, including a four-bar operating mechanism and an energy storage mechanism consisting of a locking latch, a trip latch, and an energy storage spring; It also includes a second operating shaft for connecting to a manual operating handle or an electric operating mechanism. The upper end of the second operating shaft is provided with a first limit block, and the second drive mechanism is provided with a blocking member. When the second drive mechanism is not in operation, the blocking member is set to avoid the movement trajectory of the limit block, so that the second operating shaft can rotate normally to open and close the circuit. When the second drive mechanism is in operation, the blocking member moves to the movement trajectory of the first limit block and blocks the first limit block, so that the second operating shaft located in the open position cannot rotate to the closed position.

2. The rotary disconnector according to claim 1, characterized in that: The second drive mechanism is provided with a second port for receiving control signals, including padlock control signals, which are fault signals or remote control command signals. When the second drive mechanism receives the padlock control signal, the second drive mechanism switches from the unlocked state to the padlock state.

3. The rotary disconnector according to claim 2, characterized in that: The second driving mechanism includes an electromagnetic coil fixing component and an electromagnetic driving block, with a second action spring between the electromagnetic coil fixing component and the electromagnetic driving block. The electromagnetic coil fixing component is at least partially made of a magnetically conductive material, and the electromagnetic driving block is at least partially made of a permanent magnet. The shell made of the magnetically conductive material has an attraction force with the electromagnetic driving block, and the attraction force is greater than the thrust of the second action spring after energy storage. When the second driving mechanism receives a padlock control signal, the electromagnetic coil is energized to form a magnetic field, and the direction of the magnetic field forms a repulsive force on the electromagnetic driving block away from the electromagnetic coil, causing the electromagnetic driving block to move away from the electromagnetic coil fixing component.

4. The rotary disconnector according to claim 3, characterized in that: It also includes a manual reset mechanism, which includes a push rod provided with an electromagnetic drive block corresponding to the second drive mechanism. By pressing the push rod, the electromagnetic drive block can be reset and re-attached to the electromagnetic coil fixing component. The push rod passes through the housing assembly, or the housing assembly has a drive through hole corresponding to the push rod.

5. The rotary disconnector according to claim 2, characterized in that: The second drive mechanism works in conjunction with the energy storage mechanism. The second drive mechanism switches from the unlocked state to the padlock state, and drives the energy storage mechanism to switch from the energy storage state to the energy release state.

6. The rotary disconnector according to claim 2 or 5, characterized in that: It also includes a first drive mechanism, which works in conjunction with the energy storage mechanism. The first drive mechanism is provided with a first port for receiving control signals, which are fault signals or remote control command signals. When the first drive mechanism receives the control signal, the first drive mechanism operates to switch the energy storage mechanism from the energy storage state to the energy release state.

Images