Spring operating mechanism with independent instantaneous triggering device

Abstract

The invention provides a spring operating mechanism with an independent instantaneous triggering device, which comprises a main body mechanism, the independent instantaneous triggering device and a transformer substation main control room, and is characterized in that the independent instantaneous triggering device is arranged on the upper surface of the main body mechanism and is locked with a box body in the main body mechanism through four points of a supporting plate, and a turbine transmission assembly and a sequence control assembly are arranged in the main body mechanism; a first microswitch, a second microswitch and a position indicator in the sequence control assembly and a motor in the turbine transmission assembly are all connected with a main control room of the transformer substation, and a trigger electromagnet in the independent instantaneous trigger device is connected with the main control room of the transformer substation. The spring operating mechanism with the independent instantaneous triggering device integrates an instantaneous triggering function, a manual misoperation prevention function and a one-key sequential control function, and meanwhile, the transmission structure is high in mechanical strength and stable in performance.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-voltage switches, and particularly relates to a spring operating mechanism with an independent instantaneous triggering device. Background Art

[0002] In the power system, high-voltage switchgear is a core component to ensure the safe operation of the power grid, and its reliability is directly related to power supply stability, equipment protection, and personnel safety. As an important part of high-voltage switches, the Fault Grounding Switch (FGS) is mainly used to quickly and reliably ground the faulty line when a short circuit or fault occurs in the system, so as to isolate the fault area, release the fault current, and provide safe conditions for subsequent maintenance. As the driving core of the fault grounding switch, the performance of the operating mechanism directly affects the accuracy, response speed, and long-term stability of the switch action, and the requirements for its functionality are gradually increasing with the development of technology.

[0003] The short-circuit closing test of the grounding switch is a key test to evaluate the reliability of switchgear under extreme short-circuit conditions. It requires the operating mechanism to complete the closing of the grounding switch within an extremely short time (usually in milliseconds) to simulate real faults and verify the dynamic and thermal stability, arc extinguishing ability, and insulation tolerance of the equipment. With the increase in power grid capacity and the surge in short-circuit current brought about by the integration of new energy into the grid, this test puts forward higher requirements for the response speed, synchronization accuracy, and mechanical durability of the operating mechanism, and the operating mechanism needs to meet the demand for instantaneous triggering in the short-circuit closing test of the grounding switch.

[0004] In the scenario of manually operating the grounding switch, serious accidents caused by human misoperations such as operating without confirming that the equipment is powered off often occur. To ensure the safety of personnel and equipment, it is necessary to add an anti-manual misoperation function to the grounding switch operating mechanism, and add a device to the output shaft of the operating mechanism to transmit the accurate state of the mechanism's opening and closing. Through the transmitted signal, the true position of the grounding switch contact can be identified, preventing staff from misjudging the opening and closing state of the grounding switch, which has a significant impact on the result of remote one-key control. Summary of the Invention

[0005] In view of this, the present invention aims to propose a spring operating mechanism with an independent instantaneous triggering device to solve the problems that in the scenario of manually operating the grounding switch, it is necessary to add an anti-manual misoperation function to the grounding switch operating mechanism, and add a device to the output shaft of the operating mechanism to transmit the accurate state of the mechanism's opening and closing. Through the transmitted signal, the true position of the grounding switch contact can be identified, preventing staff from misjudging the opening and closing state of the grounding switch, which has a significant impact on the result of remote one-key control.

[0006] To achieve the above object, the technical solution of the present invention is realized as follows:

[0007] The present invention provides a spring operating mechanism with an independent instantaneous triggering device, including a main body mechanism, an independent instantaneous triggering device, and a substation main control room. The independent instantaneous triggering device is arranged on the upper surface of the main body mechanism and is locked with the box body in the main body mechanism through four points of a support plate. A turbine transmission component and a sequence control component are arranged in the main body mechanism. The first microswitch, the second microswitch, the position indicator in the sequence control component, and the motor in the turbine transmission component are all connected to the substation main control room. The trigger electromagnet in the independent instantaneous triggering device is connected to the substation main control room.

[0008] Further, in the independent instantaneous triggering device, a limiting rod is fixed on the trigger electromagnet. The trigger electromagnet is arranged between an upper clamping plate and a lower clamping plate and is fixed on the support plate together with the upper clamping plate and the lower clamping plate. A return spring and a coil are arranged inside the trigger electromagnet. A moving block is arranged at the bottom and a fixed frame is arranged at the upper part. A spring is arranged in the connection groove in the middle of the moving block and the fixed block. The middle part of the moving block locks the limiting rod. The spring at the connection groove is sleeved on the limiting rod. The coil is arranged on the moving block and fixed on the fixed frame. When the coil is electrified, it adsorbs the moving block to drive the limiting rod to move up along the connection groove to compress the spring.

[0009] Further, the main body mechanism includes a box body, a turbine transmission component, an upper plate, an output shaft, a brake plate, a tripping buffer, a closing buffer, an auxiliary switch, a connecting rod assembly, a spring assembly, a spring crank arm, and a sequence control cam. In the turbine transmission component, a motor and a worm are fixed to the upper plate. The motor is connected to the worm. The worm meshes with a turbine. The turbine is fixed on the output shaft. A spring crank arm is fixed on the output shaft. One end of the spring assembly is fixedly connected to the spring crank arm and the other end is connected to the box body. A sequence control cam, a brake plate, a connecting rod assembly are sequentially and fixedly sleeved outside the output shaft. The upper plate is provided with a first microswitch, a second microswitch, a tripping buffer, and a closing buffer. A central square shaft for installing the auxiliary switch is provided. The connecting rod assembly is connected to the auxiliary switch through a connecting rod at the other end of the connecting rod. The position indicator is arranged outside the box body and is connected to the auxiliary switch. Both the tripping buffer and the closing buffer are hydraulic buffers. The tripping buffer is arranged at the tripping contact position of the brake plate. The closing buffer is arranged at the closing position.

[0010] Further, the sequence control component includes a sequence control cam, a first microswitch, and a second microswitch. The first microswitch and the second microswitch are respectively arranged in the counterclockwise direction with the axis of the output shaft as the center. The first microswitch and the second microswitch are arranged at a certain angle in the counterclockwise direction. The first microswitch and the second microswitch are both connected to the substation main control room through terminal blocks. The first microswitch is arranged at the crimping position of the cam part of the sequence control cam in the tripping state. The second microswitch is arranged at the crimping position of the cam part of the sequence control cam in the closing state.

[0011] Furthermore, a spline connection is adopted at the mating part of the brake plate and the output shaft, and one tooth of the spline connection is reserved without machining as a whole.

[0012] Furthermore, two forked protruding plates are provided on the brake plate. The two forked protruding plates are arranged at a certain angle and have the same angle as that between the first microswitch and the second microswitch. When the switch is closed, the first forked protruding plate of the two forked protruding plates contacts the closing buffer; when the switch is opened, the second forked protruding plate contacts the opening buffer. In the opening state, the second forked protruding plate is restricted by the square limit rod connected to the trigger electromagnet that is controlled to be powered off by the main control room of the substation and is in the lower position. In the closed state, the square limit rod connected to the trigger electromagnet that is controlled to be powered on by the main control room of the substation is in the upper position, and the second forked protruding plate is not restricted.

[0013] Furthermore, the main body mechanism further includes an anti-misoperation electromagnetic lock, an anti-misoperation cover plate, and a breather valve. The anti-misoperation electromagnetic lock, the anti-misoperation cover plate, the position indicator, and the breather valve are all fixed on the box body. The anti-misoperation electromagnetic lock is arranged inside the anti-misoperation cover plate. The circuit of the anti-misoperation electromagnetic lock is only connected when the high-voltage switch is in the open and non-energized state. At this time, the anti-misoperation electromagnetic lock is attracted and the worm square shaft is exposed, which is convenient for inserting a rocker for manual operation. The anti-misoperation electromagnetic lock and the breather valve are connected to the main control room of the substation.

[0014] Furthermore, the worm is designed in a split structure, which includes an external gear and an internal iron core. The external gear and the internal iron core are connected by rivets. The material of the external gear is aluminum bronze, and the material of the internal iron core is 40Cr. [[ID=!2]]

[0015] Compared with the prior art, the spring operating mechanism with an independent instantaneous trigger device of the present invention has the following advantages:

[0016] (1) The spring operating mechanism of the present invention integrates an instantaneous trigger function, an anti-manual misoperation function, and a one-key sequence control function. At the same time, the transmission structure has high mechanical strength and stable performance. The mechanical part can be divided into two parts: the main body mechanism and the independent instantaneous trigger device. When the spring operating mechanism needs the instantaneous trigger function, the independent instantaneous trigger device is installed together with the main body mechanism, and at this time the instantaneous trigger device can play a role; when the spring operating mechanism does not need the instantaneous trigger function, the instantaneous trigger device is not installed on the main body mechanism, and at this time the main body mechanism can also operate normally without affecting the conventional functions.

[0017] (2) The one-button sequential control function in the spring operating mechanism of the present invention is realized by the cooperation of the sequential control cam on the output shaft and the first and second micro switches on the upper plate. The sequential control cam changes position as the output shaft rotates. When the mechanism is in the open position, the sequential control cam presses the first micro switch, and the first micro switch transmits the open position signal to the main control room of the substation. When the mechanism moves to the closed position, the sequential control cam presses the second micro switch, and the second micro switch transmits the closed position signal to the main control room of the substation. When the mechanism changes from the open state to the closed state, the output shaft rotates 60°, that is, the sequential control cam rotates 60°. Figure 3 The middle solid is rotated 60° counterclockwise;

[0018] (3) The worm wheel in the spring operating mechanism of the present invention is a split design, which is divided into an external gear tooth and an internal iron core. The external gear tooth is made of aluminum bronze, and the internal iron core is made of 40Cr. The main part of the worm wheel that is subjected to stress and wear is the external gear tooth. Aluminum bronze has excellent mechanical properties, high hardness, excellent wear resistance, and high fatigue strength, which can well ensure the mechanical strength of the transmission structure. The internal iron core is made of 40Cr, which meets the mechanical strength requirements and reduces the cost of the worm wheel.

[0019] (4) In the spring operating mechanism of the present invention, the brake plate and the output shaft are connected by a spline. The impact loads applied during the operation of the mechanism are extremely large. The traditional flat key connection has low mechanical strength and is difficult to meet the mechanical life requirements. The flat key shearing phenomenon is very likely to occur. The spline connection has a high load bearing capacity. The multi-key matching method reduces local stress concentration and can significantly extend the service life under impact loads. The splines of the brake plate and the output shaft are reserved with one tooth not processed so that the two have clear directionality when they are installed together, avoiding installation errors and deviations that cause the output angle of the mechanism to shift. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] In the attached figure:

[0022] Figure 1 Schematic diagram of the main structure of the spring operating mechanism with an independent instantaneous trigger device according to an embodiment of the present invention;

[0023] Figure 2 Schematic diagram of the mechanism of the spring operating mechanism with an independent instantaneous trigger device according to an embodiment of the present invention;

[0024] Figure 3 Schematic diagram of a sequential control cam and a micro switch of a spring operating mechanism with an independent instantaneous trigger device according to an embodiment of the present invention;

[0025] Figure 4 Schematic diagram of the cooperation between the trigger device and the mechanism in the spring operating mechanism with an independent instantaneous trigger device according to the embodiment of the present invention;

[0026] Figure 5 Schematic diagram of the trigger device of the spring operating mechanism with an independent instantaneous trigger device according to the embodiment of the present invention;

[0027] Figure 6 Installation schematic diagram at the anti-misoperation cover plate in the spring operating mechanism with an independent instantaneous trigger device according to the embodiment of the present invention;

[0028] Figure 7 Schematic diagram of the position of the anti-misoperation electromagnet in the spring operating mechanism with an independent instantaneous trigger device according to the embodiment of the present invention;

[0029] Figure 8 Schematic diagram of the turbine structure in the spring operating mechanism with an independent instantaneous trigger device according to the embodiment of the present invention;

[0030] Figure 9 Schematic diagram of the cooperation between the output shaft and the brake plate in the spring operating mechanism with an independent instantaneous trigger device according to the embodiment of the present invention;

[0031] Figure 10 Schematic diagram of the non-energized state at the trigger electromagnet in the spring operating mechanism with an independent instantaneous trigger device according to the embodiment of the present invention;

[0032] Figure 11 Schematic diagram of the energized state at the trigger electromagnet in the spring operating mechanism with an independent instantaneous trigger device according to the embodiment of the present invention;

[0033] Figure 12 Schematic diagram of the movement of the connecting rod assembly during the closing movement in the spring operating mechanism with an independent instantaneous trigger device according to the embodiment of the present invention.

[0034] Explanation of the reference numerals:

[0035] 1. Box body; 2. Motor; 3. Upper plate; 4. Worm; 5. Output shaft; 6. Brake plate; 7. Anti-misoperation electromagnetic lock; 8. Anti-misoperation cover plate; 9. Turbine; 101. First microswitch; 102. Second microswitch; 111. Shunt buffer; 112. Closing buffer; 12. Position indicator; 13. Auxiliary switch; 14. Link assembly; 15. Spring assembly; 16. Breather valve; 17. Spring crank arm; 18. Sequence control cam; 19. Support plate; 20. Upper splint; 21. Lower splint; 22. Limit rod; 23. Trigger electromagnet; 24. Independent instantaneous trigger device; 25. Main body mechanism; 26. Moving block; 27. Spring; 28. Coil; 41. Inner iron core; 42. External gear teeth; 43. Rivet; 44. Unprocessed tooth area; 71. Position of the front stop block before suction; 72. Position of the rear stop block after suction. Specific embodiments

[0036] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0039] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0040] Refer to Figures 1 - 12As shown in the figure, this embodiment provides a spring operating mechanism with an independent instantaneous triggering device, including a main body mechanism 25, an independent instantaneous triggering device 24, and a substation main control room. The independent instantaneous triggering device 24 is arranged on the upper surface of the main body mechanism 25 and is locked to the box body 1 in the main body mechanism 25 through four points of the support plate 19. A turbine transmission component and a sequence control component are arranged in the main body mechanism 25. The first microswitch 101, the second microswitch 102, the position indicator 12 in the sequence control component, and the motor 2 in the turbine transmission component are all connected to the substation main control room. The trigger electromagnet 23 in the independent instantaneous triggering device 24 is connected to the substation main control room.

[0041] Specifically, in this embodiment, in the independent instantaneous triggering device, the limit rod 22 is fixed on the trigger electromagnet 23. The trigger electromagnet 23 is arranged between the upper clamping plate 20 and the lower clamping plate 21 and is fixed on the support plate 19 together with the upper clamping plate 20 and the lower clamping plate 21. A return spring 27 and a coil 28 are arranged inside the trigger electromagnet 23. A moving block 26 is arranged at the bottom and a fixed frame is arranged at the upper part. A spring 27 is arranged in the connecting groove in the middle of the moving block 26 and the fixed block. The limit rod 22 is locked in the middle of the moving block 26. The spring 27 at the connecting groove is sleeved on the limit rod 22. The coil 28 is arranged on the moving block 26 and is fixed on the fixed frame. When the coil 28 is energized, it adsorbs the moving block 26 to drive the limit rod 22 to move up along the connecting groove to compress the spring 27.

[0042] The rated voltage of the trigger electromagnet is 220V, the coil resistance value is 110Ω. The limit rod is fixedly connected to the trigger electromagnet as a whole, and the limit rod contracts with the suction of the trigger electromagnet. The trigger electromagnet is clamped between the upper clamping plate and the lower clamping plate and is fixed on the support plate together with the upper and lower clamping plates.

[0043] Specifically, in this embodiment, the main body mechanism includes a box body 1, a turbine transmission component, an upper plate 3, an output shaft 5, a brake plate 6, a tripping buffer 111, a closing buffer 112, an auxiliary switch 13, a connecting rod component 14, a spring component 15, a spring crank arm 17, and a sequence control cam 18. In the turbine transmission component, a motor 2 and a worm 4 are fixed to the upper plate 3. The motor 2 is connected to the worm 4, and the worm 4 meshes with a turbine 9. The turbine 9 is fixed on the output shaft 5. A spring crank arm 17 is fixed on the output shaft 5. One end of the spring component 15 is fixedly connected to the spring crank arm 17, and the other end is connected to the box body 1. A sequence control cam 18, a brake plate 6, a connecting rod component 14 are sequentially and fixedly sleeved outside the output shaft 5. A first microswitch 101, a second microswitch 102, a tripping buffer 111, and a closing buffer 112 are arranged on the upper plate 3. A central square shaft for installing the auxiliary switch 13 is provided. The connecting rod component 14 is connected to the auxiliary switch 13 through a connecting rod at the other end of the connecting rod. A position indicator 12 is arranged outside the box body 1, and the position indicator 12 is connected to the auxiliary switch 13. Both the tripping buffer 111 and the closing buffer 112 are hydraulic buffers. The tripping buffer 111 is arranged at the tripping contact position of the brake plate 6, and the closing buffer 112 is arranged at the closing position.

[0044] Specifically, in this embodiment, the sequence control component includes a sequence control cam 18, a first microswitch 101, and a second microswitch 102. The first microswitch 101 and the second microswitch 102 are respectively arranged in the counterclockwise direction with the axis of the output shaft 5 as the center. The first microswitch 101 and the second microswitch 102 are arranged at a certain angle in the counterclockwise direction. Both the first microswitch 101 and the second microswitch 102 are connected to the main control room of the substation through terminal blocks. The first microswitch 101 is arranged at the crimping position of the cam portion of the sequence control cam 18 in the tripping state, and the second microswitch 102 is arranged at the crimping position of the cam portion of the sequence control cam 18 in the closing state.

[0045] The sequence control cam 18 rotates 60° and crimps with the second microswitch 102. The second microswitch 102 transmits the closing signal in the mechanism. The brake plate 6 impacts the closing buffer 112 to complete the braking of the mechanism. The connecting rod component 14 rotates to drive the auxiliary switch 13 to complete the change of the tripping and closing circuit lines in the secondary circuit of the mechanism. At the same time, the auxiliary switch 13 drives the position indicator 12 to complete the change of the external tripping and closing state display.

[0046] The one-key sequence control function in the spring operating mechanism is realized by the cooperation of the sequence control cam on the output shaft and the first and second microswitches on the upper plate. The sequence control cam changes its position as the output shaft rotates. When the mechanism is in the open position, the sequence control cam presses the first microswitch, and the first microswitch transmits the open position signal to the main control room of the substation. When the mechanism moves to the closed position, the sequence control cam presses the second microswitch, and the second microswitch transmits the closed position signal to the main control room of the substation. When the mechanism moves from the open state to the closed state, the output shaft rotates 60°, that is, the rotation angle of the sequence control cam is 60°. In Figure 3 it actually rotates counterclockwise by 60°.

[0047] Specifically, in this embodiment, the spline connection is adopted at the cooperation position of the brake plate 6 and the output shaft 5, and one tooth of the spline connection is reserved without machining. Refer to Figure 9 , Figure 9 the unprocessed tooth is 44 in

[0048] Specifically, in this embodiment, there are two forked protruding plates on the brake plate 6. The two forked protruding plates are arranged at a certain angle and are consistent with the angles between the first microswitch 101 and the second microswitch 102. The first forked protruding plate among the two forked protruding plates contacts the closing buffer 112 during closing, and the second forked protruding plate contacts the opening buffer 111 during opening; in the open state, the second forked protruding plate is restricted by the square limit rod 22 connected to the trigger electromagnet 23 that is powered off and controlled by the main control room of the substation to be in the lower position; in the closed state, the square limit rod 22 connected to the trigger electromagnet 23 that is powered on and controlled by the main control room of the substation is in the upper position for the second forked protruding plate, and the second forked protruding plate is not restricted.

[0049] Specifically, in this embodiment, the main body mechanism further includes an anti-misoperation electromagnetic lock 7, an anti-misoperation cover plate 8, and a breather valve 16. The anti-misoperation electromagnetic lock 7, the anti-misoperation cover plate 8, the position indicator 12, and the breather valve 16 are all fixed on the box body 1. The anti-misoperation electromagnetic lock 7 is arranged inside the anti-misoperation cover plate 8. The circuit of the anti-misoperation electromagnetic lock 7 will be connected only when the high-voltage switch is in the open and de-energized state, and at this time, the anti-misoperation electromagnetic lock 7 is attracted to expose the worm square shaft, which is convenient for inserting the rocker for manual operation. The anti-misoperation electromagnetic lock 7 and the breather valve 16 are connected to the main control room of the substation. The anti-misoperation electromagnetic lock 7 adopts the electromagnetic lock model 8BN102167 produced by Jiangyin Feiyang Electric Appliance Co., Ltd. Two breather valves are installed on the box body of the main body mechanism to form air convection. The presence of the breather valve allows the air inside the box body to circulate, which helps with heat dissipation and maintaining the internal and external pressure balance, and extends the life of the internal secondary components. Refer to Figure 7 , Figure 7In the middle, 71 indicates the front stop position, and 72 indicates the rear stop position. The manual operation prevention function is achieved by the electromagnetic lock and the cover. The cover is equipped with an external lock, which constitutes the first restriction. Manual operation requires a special key. When removing the special key, the high-voltage switch must be energized. After removing the cover, the electromagnetic lock constitutes the second restriction. Only when the high-voltage switch is in the open position and de-energized will the electromagnetic lock circuit be connected. Only after the electromagnetic lock is engaged can the worm shaft be exposed, and the rocker can be inserted for manual operation.

[0050] Specifically, in this embodiment, the worm 4 is designed as a split part, which includes an external gear tooth 42 and an internal iron core 41. The external gear tooth 42 is connected to the internal iron core 41 by rivets 43. The external gear tooth 42 is made of aluminum bronze, and the internal iron core 41 is made of 40Cr. The main mechanism adopts a worm gear transmission, which has less impact than the gear transmission and can withstand a higher load. In addition, its self-locking property can prevent the load from reversing and can better protect the motor. The worm wheel in the spring operating mechanism is designed as a split part, which is divided into an external gear tooth and an internal iron core. The external gear tooth is made of aluminum bronze, and the internal iron core is made of 40Cr. The main part of the worm wheel that is subjected to stress and wear is the external gear tooth. Aluminum bronze has excellent mechanical properties, high hardness, excellent wear resistance, and high fatigue strength, which can well ensure the mechanical strength of the transmission structure. The internal iron core is made of 40Cr, which meets the mechanical strength requirements and reduces the cost of the worm wheel.

[0051] When an independent instantaneous trigger device is installed on the mechanism, after the mechanism moves to complete the energy storage of the spring in the spring assembly 15, when the spring in the spring assembly 15 is about to release and drive the output shaft 5, the brake plate 6 on the output shaft 5 is blocked by the limit rod 22. After the main control room sends a signal to the trigger electromagnet 23 to energize and attract, the limit rod 22 contracts as the trigger electromagnet 23 is attracted, and the spring in the spring assembly 15 is released, and the mechanism completes the closing operation. In the absence of an independent instantaneous trigger device, the energy storage time of the spring in the spring assembly 15 in the main mechanism varies greatly, resulting in unstable closing time. The existing independent instantaneous trigger device takes the position after the spring energy is fully stored as the starting point of the mechanism action, ignoring the spring energy storage time and retaining only the spring closing and release interval, meeting the requirement of millisecond-level accuracy for short-circuit current phase control in the FES short-circuit closing test.

[0052] The spring operating mechanism integrates an instantaneous triggering function, a prevention of manual misoperation function, and a one-key sequence control function. At the same time, the transmission structure has high mechanical strength and stable performance. The mechanical part can be divided into two parts: the main body mechanism and the independent instantaneous triggering device. When the spring operating mechanism requires the instantaneous triggering function, the independent instantaneous triggering device is installed together with the main body mechanism, and at this time, the instantaneous triggering device can play a role; when the spring operating mechanism does not require the instantaneous triggering function, the instantaneous triggering device is not installed on the main body mechanism, and at this time, the main body mechanism can also operate normally without affecting the conventional functions.

[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A spring operating mechanism with an independent instantaneous triggering device, characterized in that, It includes a main body mechanism, an independent instantaneous triggering device, and a substation main control room. The independent instantaneous triggering device is arranged on the upper surface of the main body mechanism and is locked to the box body in the main body mechanism through four points of the support plate. A turbine drive assembly and a sequence control assembly are arranged inside the main body mechanism. The first microswitch, the second microswitch, the position indicator in the sequence control assembly, and the motor in the turbine drive assembly are all connected to the substation main control room. The trigger electromagnet in the independent instantaneous triggering device is connected to the substation main control room.

2. The spring operating mechanism with an independent instantaneous triggering device according to claim 1, characterized in that, In the independent instantaneous triggering device, the limit rod is fixed on the trigger electromagnet. The trigger electromagnet is arranged between the upper clamping plate and the lower clamping plate and is fixed to the support plate together with the upper clamping plate and the lower clamping plate. A return spring and a coil are arranged inside the trigger electromagnet. A moving block is arranged at the bottom and a fixed frame is arranged at the upper part. A spring is arranged in the connection groove in the middle of the moving block and the fixed block. The limit rod is locked in the middle of the moving block. The spring at the connection groove is sleeved on the limit rod. The coil is arranged on the moving block and fixed to the fixed frame. When the coil is energized, it adsorbs the moving block to drive the limit rod to move up along the connection groove to compress the spring.

3. The spring operating mechanism with an independent instantaneous triggering device according to claim 1, characterized in that, The main body mechanism includes a box body, a turbine drive assembly, an upper plate, an output shaft, a brake plate, a tripping buffer, a closing buffer, an auxiliary switch, a connecting rod assembly, a spring assembly, a spring crank arm, and a sequence control cam. In the turbine drive assembly, the motor and the worm are fixed to the upper plate. The motor is connected to the worm. The worm meshes with the turbine. The turbine is fixed on the output shaft. The spring crank arm is fixed on the output shaft. One end of the spring assembly is fixedly connected to the spring crank arm and the other end is connected to the box body. The sequence control cam, the brake plate, the connecting rod assembly are sequentially and fixedly sleeved outside the output shaft. The first microswitch, the second microswitch, the tripping buffer, and the closing buffer are arranged on the upper plate. The central square shaft for installing the auxiliary switch is provided. The connecting rod assembly is connected to the auxiliary switch through the connecting rod at the other end of the connecting rod. The position indicator is arranged outside the box body and is connected to the auxiliary switch. Both the tripping buffer and the closing buffer are hydraulic buffers. The tripping buffer is arranged at the tripping contact position of the brake plate, and the closing buffer is arranged at the closing position.

4. The spring operating mechanism with an independent instantaneous trigger device according to claim 1, characterized in that, The sequence control assembly includes a sequence control cam, a first microswitch, and a second microswitch. The first microswitch and the second microswitch are respectively arranged in the counterclockwise direction with the axis of the output shaft as the center. The first microswitch and the second microswitch are arranged at a certain angle in the counterclockwise direction. The first microswitch and the second microswitch are both connected to the substation main control room through the terminal blocks. The first microswitch is arranged at the crimping position of the cam part of the sequence control cam in the tripping state, and the second microswitch is arranged at the crimping position of the cam part of the sequence control cam in the closing state.

5. The spring operating mechanism with an independent instantaneous triggering device according to claim 3, characterized in that, The spline connection is adopted at the matching part of the brake plate and the output shaft, and one tooth of the whole spline connection is reserved without machining.

6. The spring operating mechanism with an independent instantaneous triggering device according to claim 5, characterized in that, There are two forked protruding plates on the brake plate. The two forked protruding plates are arranged at a certain angle, and the angle is the same as that between the first microswitch and the second microswitch. The first forked protruding plate of the two forked protruding plates contacts the closing buffer during closing, and the second forked protruding plate contacts the opening buffer during opening; in the opening state, the second forked protruding plate is restricted by the square limit rod connected to the trigger electromagnet that is powered off by the main control room of the substation and is in the lower position; in the closing state, the square limit rod connected to the trigger electromagnet that is powered on by the main control room of the substation is in the upper position, and the second forked protruding plate is not restricted.

7. The spring operating mechanism with an independent instantaneous triggering device according to claim 4, characterized in that, The main body mechanism further includes an anti-misoperation electromagnetic lock, an anti-misoperation cover plate, and a breather valve. The anti-misoperation electromagnetic lock, the anti-misoperation cover plate, the position indicator, and the breather valve are all fixed on the box body. The anti-misoperation electromagnetic lock is arranged inside the anti-misoperation cover plate. The circuit of the anti-misoperation electromagnetic lock will be connected only when the high-voltage switch is in the open and non-energized state. At this time, the anti-misoperation electromagnetic lock is attracted and the worm square shaft is exposed, which is convenient for inserting the rocker for manual operation. The anti-misoperation electromagnetic lock and the breather valve are connected to the main control room of the substation.

8. The spring operating mechanism with an independent instantaneous triggering device according to claim 3, characterized in that, The worm is designed in a split structure, which includes an external gear and an internal iron core. The external gear and the internal iron core are connected by rivets. The material of the external gear is aluminum bronze, and the material of the internal iron core is 40Cr.

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