A double-spring bypass operation arc extinguishing switch and bypass operation method

Abstract

The application relates to the technical field of power equipment, and discloses a double-spring bypass operation arc extinguishing switch and a bypass operation method, which comprises a double-spring energy storage driving assembly, an unlocking operation assembly, a contact arc extinguishing assembly and a double-path conductive assembly; the double spring is independently compressed to store energy and is independently unlocked to release energy, and two sets of unlocking assemblies correspond to control of spring energy storage and energy release; the contact assembly adopts a main contact and arc contact hierarchical separation structure to realize forced arc extinguishing in cooperation with an arc extinguishing tube; the main contact and the arc contact adopt independent conductive paths, and there is no direct conductive connection between the static arc contact and the static contact; and the double-path conductive assembly realizes current shunting. Through cooperation of various assemblies, the application realizes rapid opening and closing and efficient arc extinguishing, protects the main contact, improves conductive stability, is suitable for high-voltage bypass live working, guarantees operation safety and stable operation of a line, and has the advantages of reasonable structure, convenient operation and long service life.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, specifically to a double-spring type bypass arc suppression switch and bypass operation method. Background Technology

[0002] In the operation and maintenance of high-voltage power lines, bypass live-line work is a key technical means to ensure uninterrupted power supply and improve power supply reliability. Its core is to connect the working line to the backup line via a bypass switch, achieving load transfer before maintenance on the working line. The core safety hazard and technical difficulty of bypass work lies in the generation and extinguishing of electric arcs during the opening and closing of the switch. During bypass live-line work, when the switch opens and closes, an electric arc is generated between the moving and stationary contacts due to the breakdown of air by the high-voltage electric field. If the arc cannot be extinguished quickly and reliably, it will directly burn the contacts, damage switch components, and even cause safety accidents such as short circuits and leakage, seriously threatening the personal safety of workers and the stable operation of the power system.

[0003] Currently, while existing bypass arc-extinguishing switches possess basic arc-extinguishing functions, they still exhibit significant shortcomings in addressing the core arc-extinguishing issues in practical applications: First, the arc-extinguishing structure design is unreasonable, often employing a single contact with a simple arc-extinguishing device. During opening, the arc directly acts on the main contact, resulting in slow arc extinguishing speed and easy wear and erosion of the main contact, shortening the switch's service life. Furthermore, it cannot meet the rapid opening and closing arc-extinguishing requirements in high-voltage bypass operations. Second, the drive structure has poor compatibility with the arc-extinguishing function. Most adopt single-spring energy storage drive or double-spring rigid linkage, unable to independently store energy, resulting in slow opening and closing response speeds. This leads to prolonged arc duration, further exacerbating arc damage to components, and also easily causing incomplete contact opening and closing. Third, the auxiliary structure of existing switches fails to adapt to the core arc-extinguishing requirements. Concentrated current loads easily generate heat, indirectly affecting arc-extinguishing efficiency. Moreover, the lack of a visual observation structure prevents operators from intuitively judging the arc-extinguishing status, increasing operational safety hazards.

[0004] In view of the shortcomings of the existing technology, there is an urgent need for a double-spring bypass arc suppression switch that is highly efficient in arc suppression, has fast opening and closing response, high reliability, good safety performance, and can solve all the above technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a double-spring type bypass arc suppression switch and bypass operation method to solve the above-mentioned defects in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention proposes a dual-spring bypass arc-extinguishing switch, comprising: a dual-spring energy storage drive assembly, an unlocking operation assembly, a contact arc-extinguishing assembly, and a dual-path conductive assembly. The dual-spring energy storage drive assembly includes a tripping spring and a closing spring, arranged vertically upwards and downwards. Both the tripping and closing springs are helical compression springs, used to drive the contact arc-extinguishing assembly to achieve rapid disconnection and rapid closure, respectively. The unlocking operation assembly is configured with two independent structures, each corresponding to one of the tripping and closing springs, used to achieve energy storage locking and unlocking release of the corresponding tripping and closing springs. The contact arc-extinguishing assembly includes a main contact and an arc contact, which form a graded separation structure, with the main contact disconnecting first and the arc contact disconnecting later. The dual-path conductive assembly has two parallel conductive paths for current shunting and conduction.

[0008] Preferably, the double-spring bypass arc extinguishing switch further includes a switch housing, which is an insulating cylindrical structure with an internal mounting cavity; the opening spring is a helical compression spring, vertically disposed in the upper cavity of the switch housing, with its upper end fixedly connected to the switch housing and its lower end contacting the contact arc extinguishing assembly; the closing spring is a helical compression spring, vertically disposed in the lower cavity of the switch housing, with its lower end fixedly connected to the switch housing and its upper end contacting the contact arc extinguishing assembly; the opening spring is located directly above the closing spring, and the contact arc extinguishing assembly is pushed by the opening and closing springs and moves freely between the opening and closing springs.

[0009] Preferably, the unlocking operation component includes an unlocking component housing, an unlocking stop, and a reset spring; the unlocking component housing is an insulating block structure, fixedly connected to the outside of the switch housing; the unlocking stop is slidably disposed inside the unlocking component housing, the unlocking stop is located outside the energy storage end of the opening spring or closing spring and is movably abutting against the end of the opening spring or closing spring; the reset spring is a columnar compression spring, one end of the reset spring is fixedly abutting against the unlocking stop, and the other end of the reset spring is fixedly abutting against the unlocking component housing.

[0010] Preferably, the unlocking operation component further includes a spring pull ring. A vertical slot is provided on the side of the switch housing away from the unlocking stop. The inner end of the spring pull ring passes through the vertical slot and is fixedly connected to the end of the opening spring or closing spring. The outer end of the spring pull ring is suspended outside the switch housing. The spring pull ring can move up and down along the vertical slot. Pulling the spring pull ring of the opening spring upwards can compress the opening spring upwards to complete independent energy storage. Pulling the corresponding spring pull ring of the closing spring downwards can compress the closing spring downwards to complete independent energy storage. After unlocking and releasing energy, the corresponding opening spring or closing spring resets under its own elastic force and simultaneously drives the spring pull ring to return to its original position along the vertical slot.

[0011] Preferably, the unlocking operation component further includes an unlocking pull ring, which is installed outside the unlocking component housing. An unlocking connecting rod is hinged to the outer end of the unlocking block, and the other end of the unlocking connecting rod extends through to the outside of the unlocking component housing and is fixedly connected to the unlocking pull ring. Pulling the unlocking pull ring outward can move the unlocking block, release the lock on the end of the corresponding opening spring or closing spring, and cause the opening spring or closing spring to release its stored energy and reset.

[0012] Preferably, the unlocking block has a guide slope on the side facing the spring. When the spring pull ring drives the corresponding opening spring or closing spring to the energy storage position, the end of the opening spring or closing spring contacts the guide slope of the unlocking block and pushes the unlocking block to retract, thereby realizing automatic locking after the opening spring or closing spring has stored energy.

[0013] Preferably, the main contact consists of a moving contact and a stationary contact, the arc contact consists of a moving arc contact and a stationary arc contact, and the arc-extinguishing assembly further includes an arc-extinguishing tube and a contact fixing member; the moving contact is a columnar conductive member capable of vertical reciprocating motion, the stationary contact is a block-shaped conductive member, and the stationary contact and the moving contact are fixedly arranged opposite each other; the moving arc contact and the moving contact are rigidly connected through the contact fixing member and move synchronously; the arc-extinguishing tube is an insulating tubular member and is fixedly connected to the contact fixing member, the moving arc contact and the moving contact are respectively located on the inner and outer sides of the lower end of the arc-extinguishing tube, and the stationary arc contact and the stationary contact are respectively located on the inner and outer sides of the upper end of the arc-extinguishing tube; the lower end of the opening spring abuts against the upper end face of the contact fixing member for transmission, and the closing spring... The upper end of the contact spring abuts against the lower end of the contact fixing member, and the two are not rigidly connected. The contact fixing member is only pushed to move when the spring is compressed, and they can be separated when there is no compression. The contact fixing member is normally placed on the upper end of the closing spring under the force of gravity. The closing spring is compressed downward to store energy independently. After unlocking and releasing energy, it rebounds upward and abuts against the contact fixing member to move vertically upward to achieve closing. The moving contact and the stationary contact are interference-fitted and locked. The opening spring is compressed upward to store energy independently. After unlocking and releasing energy, it rebounds downward and abuts against the contact fixing member to move vertically downward and drive the moving contact and the stationary contact to unlock and separate, thereby achieving opening. The separation stroke of the moving contact and the stationary contact is earlier than the separation stroke of the moving arc contact and the stationary arc contact, forming a staged disconnection structure.

[0014] Preferably, the dual-path conductive assembly includes a cable clamp, a conductive tube, a conductive rod, a conductive shaft, and a current-guiding conductive rod. The cable clamp is located at the front end of the switch housing. The conductive rod is located inside the conductive tube and coaxially arranged with it. The arc-extinguishing tube is sleeved between the conductive tube and the conductive rod, and the conductive rod passes through the upper end face of the arc-extinguishing tube. The upper ends of both the conductive tube and the conductive rod are conductively connected to the cable clamp. The lower end of the conductive tube is conductively connected to the stationary contact, and the lower end of the conductive rod is conductively connected to the stationary arc contact. The upper end of the conductive rod is fixed to the contact fixing component and conductively connected to the moving contact. The lower end of the conductive rod is conductively connected to the current-guiding conductive rod, which is fixedly installed at the rear of the switch housing. The conductive tube and the main contact form a first conductive circuit, and the conductive rod and the arc contact form a second independent conductive circuit. The two circuits are physically independent, realizing the current splitting transmission of the working line. During the opening process, the two circuits are disconnected one after the other, ensuring that the arc is generated between the arc contacts, reducing the current-carrying load of a single conductive structure.

[0015] Preferably, it also includes a transparent insulating sleeve and a rotating handle; the transparent insulating sleeve is made of high-strength transparent insulating material and is fitted into the middle section of the switch housing; the dual-spring energy storage drive assembly is located in the inner area of ​​the transparent insulating sleeve; the transparent insulating sleeve has the functions of insulation protection, dust and moisture protection, and internal working condition visibility; the rotating handle is installed on the top of the switch housing; the rotating handle and the cable clamp are connected by a threaded engagement; when the rotating handle is rotated, it moves along the thread axis of the cable clamp to achieve cable clamping and loosening; the cable clamp does not rotate with the rotating handle.

[0016] Preferably, a bypass operation method for a double-spring type bypass arc suppression switch includes the following steps:

[0017] S1. Pre-operation inspection and posture adjustment: The operator holds the rotating handle and moves the entire switch to the working position; the cable clamp does not rotate, and the wire can be clamped by rotating the rotating handle along the thread axis; visually inspect the integrity of the double spring energy storage drive component and the contact arc extinguishing component inside the switch housing through the transparent insulating sleeve, confirm that the two independent unlocking operation components operate smoothly, the opening spring and closing spring are in the natural pre-compression state, the contact fixing part is stably placed on the upper end of the closing spring under gravity, and all conductive parts are firmly connected without any damage, loosening or insulation damage.

[0018] S2, Dual-spring independent compression and energy storage: Pull the spring ring corresponding to the opening spring upward and pull the spring ring corresponding to the closing spring downward, so that the opening spring and closing spring complete independent compression and energy storage respectively, and are automatically locked by the corresponding unlocking block; the contact fixing part is kept in the normal state on the closing spring by gravity;

[0019] S3. Conductive connection of on-site lines: Move the arc suppression switch to the bypass work line position so that the front cable clamp covers the high-voltage conductor to be connected; rotate the rotating handle to move it downward along the thread of the cable clamp to clamp the conductor. The cable clamp does not rotate to ensure a firm clamping and reliable conductivity; reliably connect the external lead-in line to the lead-in conductive rod at the tail of the switch; rely on the conductive tube and conductive rod to form independent circuits for the main contacts and arc contacts respectively, to complete the conductive connection between the switch and the work line.

[0020] S4. Unlocking and closing, line conduction operation: The closing spring releases energy and rebounds upward to press against the contact fixing part, moving vertically upward, so that the moving contact and the stationary contact are interference-fitted and locked, realizing the closing passage; after the closing is completed, pull down the spring ring corresponding to the closing spring to make the closing spring pull down again to compress and lock.

[0021] S5. Live-line graded tripping and forced arc extinguishing: After the bypass operation is completed, the insulating operating rod pulls the unlocking ring corresponding to the tripping spring to release the lock; the tripping spring releases energy and rebounds downwards, pressing against the contact fixing piece and moving vertically downwards, the main contacts separate first and the arc contacts separate later; the main circuit and the arc circuit are independently disconnected, and the arc is only generated in the arc contact circuit; the arc extinguishing tube moves synchronously with the components to generate directional airflow, which quickly cools and extinguishes the arc;

[0022] S6. Work Completion and Equipment Reset: After the power is cut off, disconnect the external lead-in line and the wire clamp connection, release the locking limit of the two sets of springs, so that the opening spring and closing spring are restored to their natural initial state, the spring pull ring is reset along the vertical groove, the equipment is stored, and the bypass live work is completed.

[0023] The beneficial effects of this invention are as follows:

[0024] (1) The present invention uses a contact arc extinguishing component with a graded separation structure of main contact and arc contact (main contact disconnects first, arc contact disconnects later), so that the arc only acts on the arc contact when the circuit is opened, avoiding the main contact being burned by the arc. At the same time, it provides a structural basis for the subsequent arc extinguishing tube to play its role, effectively solving the problems of "unreasonable arc extinguishing structure, slow arc extinguishing speed, and easy wear and erosion of main contact" in the background technology, realizing the rapid and reliable extinguishing of the arc, avoiding line faults caused by the arc, and ensuring operational safety.

[0025] (2) By setting up a dual-spring energy storage drive assembly, the opening spring and closing spring adopt a contact transmission and no rigid connection, which can independently compress and store energy and independently unlock and release energy, respectively driving the contacts to quickly break and close, completely solving the problem of dual-spring linkage interference, making the contact movement smoother and the opening and closing response speed greatly improved; solving the defects of "slow response of single spring drive, long arc duration, and incomplete contact opening and closing leading to ineffective arc extinguishing" in the background technology, further improving the arc extinguishing efficiency and reducing the damage of the arc to the switching components.

[0026] (3) When the circuit is closed, the moving contact and the stationary contact are locked together by interference fit, which makes the closing and conduction more reliable. With the two parallel conductive paths of the dual-path conductive component, the current is diverted and conducted, reducing the current load of the single conductive structure and avoiding the conductive component from being heated by concentrated load, which indirectly affects the arc extinguishing efficiency. This solves the problem of "insufficient adaptability of single-path conductive and affecting the arc extinguishing effect" in the background technology, ensuring that the arc is generated between the arc contacts, making the current transmission smooth and providing a stable conductive foundation for efficient arc extinguishing.

[0027] (4) The present invention sets up two independent unlocking operation components, which are respectively matched with the opening spring and the closing spring to realize the independent energy storage locking and unlocking release of the two springs, avoid the contact not being in place due to the interference of the energy storage of the two springs, ensure that the opening and closing action is accurate and reliable, and further ensure that the arc can be effectively extinguished within the preset stroke, thus solving the problem of "poor compatibility between drive and arc extinguishing and unstable operation of switch" in the background technology. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the switch housing and the assembly of the unlocking operation components of the present invention;

[0030] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0031] Figure 4 This is a schematic diagram of the contact arc extinguishing assembly of the present invention.

[0032] In the diagram, 1. Dual-spring energy storage drive assembly, 11. Opening spring, 12. Closing spring, 2. Unlocking operation assembly, 21. Unlocking stop, 22. Reset spring, 23. Spring pull ring, 24. Unlocking pull ring, 3. Contact arc extinguishing assembly, 31. Moving contact, 32. Stationary contact, 33. Moving arc contact, 34. Stationary arc contact, 35. Arc extinguishing tube, 36. Contact fixing component, 4. Dual-path conductive assembly, 41. Cable clamp, 42. Conductive tube, 43. Conductive rod, 44. Conductive rod, 45. Current guiding conductive rod, 5. Switch housing, 6. Transparent insulating sleeve, 7. Rotary handle. Detailed Implementation

[0033] The present invention will be further described below with reference to the embodiments. It should be noted that these are merely examples and descriptions of the inventive concept. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the inventive concept or exceed the scope defined in the claims, they should all be considered to fall within the protection scope of the present invention.

[0034] Example 1:

[0035] like Figure 1-4 As shown, the present invention discloses a double-spring bypass arc-extinguishing switch, the core structure of which includes: a double-spring energy storage drive assembly 1, an unlocking operation assembly 2, a contact arc-extinguishing assembly 3, a dual-path conductive assembly 4, and a switch housing 5. These components work together to achieve rapid opening and closing, reliable arc extinguishing, and safe conductivity, all centered around the core principle of "efficient arc extinguishing." The specific structure, connection relationships, functions, and working principle are detailed below:

[0036] I. Dual-spring energy storage drive assembly:

[0037] The dual-spring energy storage drive assembly 1 is the core drive component that enables rapid opening and closing of the contacts and provides a foundation for arc extinction. It includes an opening spring 11 and a closing spring 12, combined with... Figure 2 As shown, the opening spring 11 and closing spring 12 are arranged symmetrically vertically, with the opening spring 11 located directly above the closing spring 12. Their axes coincide to ensure no interference during movement and to guarantee smooth opening and closing actions. Both the opening spring 11 and the closing spring 12 are helical compression springs made of high-strength spring steel, possessing good elastic recovery capability and fatigue life. The opening spring 11 is specifically used to drive the contact arc extinguishing assembly 3 to achieve rapid disconnection, while the closing spring 12 is specifically used to drive the contact arc extinguishing assembly 3 to achieve rapid closing. The two sets of springs can be independently compressed to store energy and independently unlocked to release energy without interfering with each other.

[0038] The opening spring 11 is a helical compression spring, which is fixedly installed in the upper cavity of the switch housing in the vertical direction. The upper end of the opening spring 11 is fixedly connected to the inner wall of the top of the upper cavity of the switch housing by bolts. The connection method is rigid fixation to ensure that the opening spring 11 will not have displacement deviation when compressing and storing energy. The lower end of the opening spring 11 is connected to the contact arc extinguishing assembly 3 through transmission, specifically through contact and transmission with the contact fixing part 36 of the contact arc extinguishing assembly 3, without rigid connection.

[0039] The closing spring 12 is a helical compression spring, which is fixedly installed in the lower cavity of the switch housing in the vertical direction. The lower end of the closing spring 12 is fixedly connected to the bottom inner wall of the lower cavity of the switch housing by bolts, which is also a rigid fixation to ensure the stability of the closing spring 12 during movement. The upper end of the closing spring 12 is connected to the contact arc extinguishing assembly 3 through transmission, specifically through contact fixing part 36 of the contact arc extinguishing assembly 3, without rigid connection.

[0040] The contact fixing member 36 of the contact arc extinguishing assembly 3 can move freely between the opening spring 11 and the closing spring 12, and is normally placed on the upper end of the closing spring 12 under gravity.

[0041] II. Unlocking Operation Components:

[0042] The unlocking operation component 2 is a key component for controlling the energy storage, locking, and release of the dual springs. To adapt to the requirement of independent drive of the dual springs, it is set as two independent structures. The two unlocking operation components 2 are respectively matched with the opening spring 11 and the closing spring 12. One set is dedicated to controlling the energy storage locking and unlocking release of the opening spring 11, and the other set is dedicated to controlling the energy storage locking and unlocking release of the closing spring 12. This ensures that the two springs can store and release energy independently at the same time without energy storage interference, providing operational guarantee for rapid opening and closing and reliable arc extinguishing.

[0043] Combination Figure 2 As shown, each unlocking operation component 2 includes an unlocking component housing, an unlocking stop 21, a reset spring 22, a spring pull ring 23, and an unlocking pull ring 24. The connection relationship, function, and working principle of each component are as follows:

[0044] The unlocking component housing is an insulating block structure made of epoxy insulation material. It is fixed to the outside of the switch housing by bolts, and the connection surface with the switch housing is sealed. It serves to install and fix the unlocking block 21 and the reset spring 22, and at the same time has an insulation protection function to prevent leakage during the unlocking operation and ensure the safety of operation. The unlocking component housing has a horizontal sliding cavity inside. The size of the sliding cavity is adapted to the size of the unlocking block 21 to ensure that the unlocking block 21 can slide flexibly in the sliding cavity without jamming.

[0045] The unlocking block 21 is a metal block structure that is slidably disposed in the sliding cavity of the unlocking component housing. The position of the unlocking block 21 corresponds to the energy storage end of the opening spring 11 or the closing spring 12. That is, the unlocking block 21 corresponding to the opening spring 11 is located on the lower outer side of the opening spring 11, and the unlocking block 21 corresponding to the closing spring 12 is located on the upper outer side of the closing spring 12. The inner end face of the unlocking block 21 is in movable contact with the end of the opening spring 11 or the closing spring 12. When the spring is compressed to the energy storage position, the unlocking block 21 locks the end of the spring to lock the energy storage of the spring and prevent the spring from releasing energy accidentally. When the unlocking ring 24 is pulled, the unlocking block 21 slides outward along the sliding cavity, releasing the contact limit on the end of the spring and releasing the energy of the spring.

[0046] The reset spring 22 is a cylindrical compression spring made of high-strength spring steel. One end of the reset spring 22 is fixedly abutted against the outer end face of the unlocking block 21, specifically by welding. The other end is fixedly abutted against the inner wall of the outer side of the sliding cavity of the unlocking component housing. The reset spring 22 is always in a pre-compressed state. Its function is to realize the automatic reset of the unlocking block 21: when the spring is fully charged and its end passes the guide slope of the unlocking block 21, the reset spring 22 rebounds, pushing the unlocking block 21 to slide inward and lock the end of the spring. After unlocking is completed, the unlocking pull ring 24 is released, and the reset spring 22 pushes the unlocking block 21 back to the initial position, preparing for the next spring charge and ensuring the reliable operation of the unlocking operation component 2.

[0047] The spring pull ring 23 has a vertical slot on the side of the switch housing away from the unlocking stop 21 (i.e., the side opposite to the unlocking component housing). The vertical slot extends along the vertical direction of the switch housing. The length of the slot is adapted to the maximum movement displacement of the spring pull ring 23, and the width is adapted to the inner diameter of the spring pull ring 23. The main function of the vertical slot is to provide guidance and limit for the spring pull ring 23, restricting the spring pull ring 23 to move only vertically. At the same time, it limits the maximum displacement of the spring pull ring 23, avoiding overtravel operation that could cause excessive compression and damage to the opening spring 11 or closing spring 12, or excessive displacement of the contact fixing member 36 that could cause excessive contact compression.

[0048] The spring ring 23 is a ring structure made of glass fiber reinforced plastic. The inner end of the spring ring 23 is inserted through a vertical slot and fixedly connected to the end of the opening spring 11 or the closing spring 12 by bolts. Specifically: the inner end of the spring ring 23 corresponding to the opening spring 11 is fixedly connected to the lower end of the opening spring 11 (i.e., the end that abuts against the contact fixing member 36); the inner end of the spring ring 23 corresponding to the closing spring 12 is fixedly connected to the upper end of the closing spring 12 (i.e., the end that abuts against the contact fixing member 36). The head fixing part 36 is fixedly connected to one end of the transmission; pulling the spring ring 23 corresponding to the opening spring 11 upward can make the opening spring independently store energy, and pulling the spring ring 23 corresponding to the closing spring 12 downward can make the closing spring independently store energy; the spring ring 23 returns to its original position along the vertical slot as the spring resets; the outer end of the spring ring 23 is suspended outside the switch housing, with a moderate length, which makes it convenient for operators to pull the spring ring 23 with insulated tools to complete the spring energy storage operation when working at height.

[0049] The unlocking pull ring 24 is a ring structure made of metal and is located outside the unlocking component housing. The outer end of the unlocking stop 21 is hinged to the unlocking linkage, and the other end of the unlocking linkage passes through the unlocking component housing and is fixedly connected to the unlocking pull ring 24. The extension length of the unlocking pull ring 24 is moderate, which makes it easy for the operator to pull the unlocking pull ring 24 through the insulated operating rod to achieve remote unlocking operation, avoid the operator's close contact with high voltage components, and ensure operation safety.

[0050] When it is necessary to release the stored energy of the spring, the operator holds the insulated operating rod, hooks the unlocking pull ring 24 and pulls it outward. The unlocking pull ring 24 drives the unlocking stop 21 to slide outward along the sliding cavity of the unlocking component housing through the unlocking linkage. At this time, the reset spring 22 is further compressed, and the unlocking stop 21 disengages from the end of the opening spring 11 or closing spring 12, releasing the lock on the end of the corresponding opening spring 11 or closing spring 12. The spring releases the stored energy and resets under its own elastic restoring force, abutting and driving the contact fixing member 36 to move, realizing the rapid breaking or closing of the contacts. After releasing the unlocking pull ring 24, the reset spring 22 rebounds, pushing the unlocking stop 21 and the unlocking pull ring 24 back to the initial position, completing the unlocking operation.

[0051] Combination Figure 2 As shown, the unlocking block 21 has a guide slope on the side facing the spring. The inclination angle of the guide slope is adapted to the end movement trajectory of the opening spring 11 or closing spring 12, preferably 30°-45°. The function of the guide slope is to guide the end of the spring smoothly into the locking position, realizing automatic locking after the spring is energized. The specific working process is as follows: when the spring pull ring 23 drives the corresponding opening spring 11 or closing spring 12 to the energized position, the end of the opening spring 11 or closing spring 12 contacts the guide slope of the unlocking block 21. Since the spring is in a compressed state, it will generate a force on the guide slope. An oblique force is applied, which is decomposed into horizontal and vertical components. The horizontal component pushes the unlocking block 21 outward along the sliding cavity, at which point the reset spring 22 is compressed. As the spring continues to move and its end passes the guide slope, the horizontal component disappears, and the reset spring 22 rebounds under its own elastic force, pushing the unlocking block 21 to slide inward until the inner end face of the unlocking block 21 abuts against the end of the spring. This achieves automatic locking of the opening spring 11 or closing spring 12 after energy storage, ensuring stable energy storage, avoiding accidental energy release, and providing reliable protection for subsequent opening, closing, and arc extinguishing actions.

[0052] III. Contact Arc Extinguishing Assembly:

[0053] The arc extinguishing assembly 3 is the core component for extinguishing the arc and protecting the main contacts. Figure 3 As shown, it includes a main contact and an arc contact. The main contact and the arc contact work together to form a graded separation structure. When the circuit is opened, the main contact opens first and the arc contact opens later. This structural design allows the arc to act only on the arc contact, avoiding the main contact being burned by the arc.

[0054] Combination Figure 3As shown, the contact arc-extinguishing assembly 3 is the core component for achieving efficient arc extinguishing and protecting the main contacts. It specifically includes a moving contact 31, a stationary contact 32, a moving arc contact 33, a stationary arc contact 34, an arc-extinguishing tube 35, and a contact fixing component 36. The connection relationships, functions, and working principles related to arc extinguishing of each component are explained in detail below:

[0055] The main contact consists of a moving contact 31 and a stationary contact 32, primarily used for current transmission when the circuit is conducting. The moving contact 31 is a columnar conductive component made of a copper alloy (such as brass alloy) with high conductivity and high arc resistance, ensuring good conductivity and a certain arc resistance. The axis of the moving contact 31 is arranged vertically and can reciprocate vertically with the contact fixing component 36. The upper end of the moving contact 31 is an arc-shaped contact end face, which facilitates contact with the stationary contact 32, ensuring reliable conduction. The stationary contact 32 is a block-shaped conductive component, also made of a copper alloy with high conductivity and high arc resistance. The stationary contact 32 is fixed to the inner wall of the middle cavity of the switch housing by bolts, and is fixedly positioned opposite the moving contact 31. The lower end face of the stationary contact 32 is an arc-shaped groove, which matches the upper arc-shaped contact end face of the moving contact 31, ensuring that the two can fit tightly when closed, with low contact resistance, avoiding poor contact that would generate heat and indirectly affect the arc extinguishing efficiency.

[0056] The arc contact consists of a moving arc contact 33 and a stationary arc contact 34, specifically designed to bear the electric arc generated during opening and protect the main contact from arc burning. The moving arc contact 33 is rigidly connected to the moving contact 31 through a contact fixing member 36, specifically by bolting to the upper end face of the contact fixing member 36, and moves synchronously with the moving contact 31 (when the moving contact 31 moves, the moving arc contact 33 moves up and down with it). The stationary arc contact 34 is independently fixed and physically isolated from the stationary contact 32, and electrically independent. Both the moving arc contact 33 and the stationary arc contact 34 are made of arc-resistant alloy material (such as tungsten copper alloy), which has a much better arc resistance than the main contact material, and can effectively withstand the high temperature burning of the electric arc, extending the service life of the switch.

[0057] The arc-extinguishing tube 35 is an insulating tubular component made of high-strength insulating and arc-resistant material (such as epoxy resin), possessing excellent insulation and high-temperature resistance. The arc-extinguishing tube 35 is bolted to the contact fixing member 36 and moves synchronously with it. The axis of the arc-extinguishing tube 35 is arranged vertically, and its interior is a hollow cavity used to contain the arc generated during opening, limiting arc diffusion. Simultaneously, its own movement generates directional airflow, achieving rapid cooling and extinguishing of the arc. The moving contact 31, the moving arc contact 33, and the arc-extinguishing tube 35 are all coaxially fixedly mounted on the upper end face of the contact fixing member 36. All are located inside the opening spring 11. The moving contact 31 is located outside the lower end of the arc-extinguishing tube 35, and the moving arc contact 33 is located inside the lower end of the arc-extinguishing tube 35. The two are connected by the contact fixing member 36 and move synchronously. The stationary contact 32 is located outside the upper end of the arc-extinguishing tube 35, and the stationary arc contact 34 is located inside the upper end of the arc-extinguishing tube 35 and remains stationary. This arrangement allows the arc generated during opening to be completely inside the arc-extinguishing tube 35, preventing the arc from spreading to other components inside the switch housing. At the same time, it facilitates the directional airflow generated when the arc-extinguishing tube 35 moves to directly act on the arc, improving the arc extinguishing efficiency.

[0058] The contact fixing component 36 is a cylindrical metal component made of high-strength conductive material (such as copper alloy). Its upper end face abuts against the lower end of the opening spring 11, and its lower end face abuts against the upper end of the closing spring 12. The contact fixing component 36 is the transmission intermediate between the double spring energy storage drive assembly 1 and the contact arc extinguishing assembly 3. Its core function is to transmit the driving force of the double springs, driving the moving contact 31, the moving arc contact 33, and the arc extinguishing tube 35 to perform vertical reciprocating motion synchronously. The contact fixing component 36 can move freely between the opening spring 11 and the closing spring 12 without being restricted by unidirectional displacement. The opening spring and the closing spring can store energy independently at the same time.

[0059] Working principle of the linkage between contact arc extinguishing assembly 3 and dual-spring energy storage drive assembly 1:

[0060] 1. Opening and Arc Extinguishing Process: The opening spring 11 and the closing spring 12 independently complete compression and energy storage and lock; when opening is required, the unlocking ring 24 corresponding to the opening spring 11 is pulled to release the locking limit; the opening spring 11 rebounds downward under its own elastic force, generating a downward driving force, which resists and compresses the contact fixing part 36 to move vertically downward, thereby driving the moving contact 31, the moving arc contact 33, and the arc extinguishing tube 35 to move downward synchronously, realizing the unlocking and separation of the moving contact 31 and the stationary contact 32; due to the main contacts (moving contact 31, stationary contact 32, and moving arc contact 33), the arc extinguishing tube 35 moves downward synchronously, thus realizing the unlocking and separation of the moving contact 31 and the stationary contact 32; The separation stroke of the moving contact 31 (32) is earlier than that of the arc contact (moving arc contact 33, stationary arc contact 34). Therefore, the moving contact 31 separates from the stationary contact 32 first, cutting off most of the current in the circuit. Then the moving arc contact 33 separates from the stationary arc contact 34. At this time, the residual current breaks down the air to generate an electric arc, which is confined inside the arc-extinguishing tube 35. At the same time, the arc-extinguishing tube 35 moves downward with the contact fixing member 36, and its internal hollow cavity is squeezed, generating a directional high-speed airflow that quickly cools and blows away the arc, so that the arc is completely extinguished in a short time.

[0061] 2. Closing and Conducting Process: The opening spring 11 and the closing spring 12 independently complete compression and energy storage and lock. When closing is required, the unlocking ring 24 corresponding to the closing spring 12 is pulled to release the lock limit. The closing spring 12 rebounds upward under its own elastic force, generating an upward driving force, which resists and compresses the contact fixing part 36 to move vertically upward, thereby driving the moving contact 31, the moving arc contact 33, and the arc extinguishing tube 35 to move upward synchronously. The moving arc contact 33 first contacts the stationary arc contact 34, and then the moving contact 31 contacts the stationary contact 32 and is locked by interference fit to realize line conduction.

[0062] IV. Dual-path conductive components:

[0063] The dual-path conductive component 4 is an auxiliary component that enables current shunting, ensures stable conductivity, and helps improve arc extinguishing efficiency. Figure 4 As shown, it has two parallel and independent conductive paths to ensure smooth current transmission and provide a stable conductive basis for the opening and closing of the circuit breaker and the arc extinguishing action.

[0064] Combination Figure 4 As shown, the dual-path conductive component 4 is an auxiliary component that realizes current shunting, ensures stable conductivity, and helps improve arc extinguishing efficiency. It specifically includes a cable clamp 41, a conductive tube 42, a conductive rod 43, a conductive rod 44, and a current-guiding conductive rod 45. The connection relationship, function, and current transmission path of each component are described in detail below:

[0065] The cable clamp 41 is located at the front end of the switch housing. It adopts a fixed clamping structure and does not rotate. It is made of conductive material (such as copper alloy). Its core function is to clamp the high-voltage wire to be connected.

[0066] Both the conductive tube 42 and the conductive rod 43 are columnar conductive components made of highly conductive metal (such as aluminum alloy) to ensure smooth current transmission. They are coaxially arranged, with the conductive rod 43 located inside the conductive tube 42. A uniform fitting gap is provided between the conductive tube 42 and the conductive rod 43 to prevent short circuits caused by contact between them. The arc-extinguishing tube 35 is sleeved between the conductive tube 42 and the conductive rod 43. There are assembly gaps between the arc-extinguishing tube 35 and both the conductive tube 42 and the conductive rod 43. The three are mutually insulated and have no movement interference.

[0067] The conductive rod 43 passes through the upper end face of the arc-extinguishing tube 35, with its upper end electrically connected to the lower end of the cable clamp 41 and its lower end electrically connected to the stationary contact 34; the upper end of the conductive tube 42 is electrically connected to the lower end of the cable clamp 41 and its lower end is electrically connected to the upper end face of the stationary contact 32.

[0068] The conductive rod 44 is a columnar conductive component made of aluminum alloy. Its upper end is fixedly connected to the contact fixing component 36 by bolts and is conductively connected to the moving contact 31 to ensure that the current of the moving contact 31 can be transmitted to the conductive rod 44. The lower end of the conductive rod 44 is fixedly connected to the current-guiding conductive rod 45 by bolts to achieve conductive connection. The current-guiding conductive rod 45 is a columnar conductive component made of copper and is fixedly installed at the tail of the switch housing. Its core function is to connect to the external current-guiding line and guide the current after the switch is turned on to the backup line to achieve load transfer.

[0069] Current transport path of dual-path conductive component 4 (two parallel independent loops):

[0070] 1. First circuit (main contact circuit): high voltage conductor → cable clamp 41 → conductive tube 42 → stationary contact 32 → moving contact 31 → conductive rod 44 → current guiding conductive rod 45 → external current guiding line; this circuit is mainly used to transmit most of the current in the line, corresponding to the conduction and disconnection of the main contacts.

[0071] 2. Second circuit (arc contact circuit): High voltage conductor → cable clamp 41 → conductive rod 43 → stationary arc contact 34 → moving arc contact 33 → conductive rod 44 → current-guiding conductive rod 45 → external current-guiding line; This circuit is mainly used to carry residual current when the circuit is opened, corresponding to the conduction and disconnection of the arc contact, and to prevent the arc from acting on the main contact.

[0072] The two parallel conductive circuits have no direct conductive connection, which realizes the current diversion of the working line and reduces the current-carrying load of a single conductive structure, avoiding the heating and aging of conductive components due to concentrated load; at the same time, it reduces contact resistance, ensures smooth current transmission, provides a stable conductive foundation for the arc extinguishing process, ensures that the arc is generated in the arc contact circuit, and indirectly improves the arc extinguishing efficiency.

[0073] V. Switch housing:

[0074] Combination Figure 1 As shown, the double-spring bypass arc extinguishing switch also includes a switch housing 5. The switch housing 5 is an insulating cylindrical structure with an integrated mounting cavity along the vertical direction inside. The mounting cavity is divided into an upper cavity, a middle cavity, and a lower cavity, which are used to install the core components of the double-spring energy storage drive assembly 1, the contact arc extinguishing assembly 3, and the unlocking operation assembly 2, respectively. The switch housing 5 as a whole plays the role of insulation protection, dust and moisture protection, and fixing of each component, avoiding leakage and flashover accidents during high-voltage operations, while providing a stable installation reference for each component.

[0075] Combination Figure 1 As shown, the double-spring type bypass arc suppression switch also includes a transparent insulating sleeve 6 and a rotary handle 7, both of which are auxiliary operation and protection components, adapted to the operational requirements of bypass live-line work. The specific structure, connection relationship and function are as follows:

[0076] The transparent insulating sleeve 6 is made of high-strength transparent insulating material (such as polycarbonate), with a preferred thickness of 3-5mm and an insulation strength ≥10kV / mm. The transparent insulating sleeve 6 is fitted into the middle section of the switch housing 5, fitting tightly and sealing well. Its coverage area includes the core area of ​​the double-spring energy storage drive assembly 1 and the contact arc extinguishing assembly 3. The transparent insulating sleeve 6 has three main functions: first, insulation protection, further improving the overall insulation performance of the switch and preventing leakage and flashover accidents during high-voltage operations; second, dust and moisture protection, protecting the internal components of the switch from dust and moisture corrosion and extending their service life; and third, internal operating condition visualization, allowing operators to directly observe the energy storage status of the internal double springs, the opening and closing status of the contacts, and the arc extinguishing process during opening through the transparent insulating sleeve 6, promptly identifying potential faults and ensuring operational safety.

[0077] The rotary handle 7 is made of insulating material (such as epoxy insulating plastic) and is installed on the top of the switch housing. The rotary handle 7 and the cable clamp 41 are connected by a threaded engagement, and the cable clamp 41 remains fixed and does not rotate. When the rotary handle 7 is rotated, the rotary handle 7 moves up and down along the threaded axis of the cable clamp 41 to clamp and release the high-voltage wire, ensuring reliable clamping and stable conductivity.

[0078] This invention also provides a bypass operation method for a double-spring type bypass arc suppression switch, using any of the above-mentioned double-spring type bypass arc suppression switches, combined with the attached... Figure 1-4 This method is strictly adapted to the structural design of the switch, focusing on "efficient arc suppression and safe operation," and completes the operation step by step. Each step corresponds to the working principle of each component of the switch, ensuring that the operation process is safe, efficient, and reliable. The specific steps are explained in detail below:

[0079] S1. Pre-operation inspection and posture adjustment: The operator holds the rotating handle 7 and moves the entire switch to the working position; the cable clamp 41 does not rotate, but the wire can be clamped by rotating the rotating handle 7 along the thread axis; then, visually inspect the integrity of all components inside the switch housing through the transparent insulating sleeve 6: focus on checking whether the opening spring 11 and closing spring 12 of the double spring energy storage drive assembly 1 are in a natural preload state, without deformation or breakage; check the moving contact 31 and stationary contact arc extinguishing assembly 3. Contacts 32, 33, and 34 are free from burning and loosening; arc extinguishing tube 35 is free from damage and cracks. The two independent unlocking operation components 2 are checked for smooth operation; unlocking block 21, spring ring 23, and unlocking ring 24 are free from jamming; and reset spring 22 is free from failure. All conductive components (cable clamp 41, conductive tube 42, conductive rod 43, conductive rod 44, and current-guiding conductive rod 45) are checked for secure connections, free from damage, loosening, and potential insulation failure. If any damaged or abnormal components are found, they must be replaced or repaired promptly to prevent malfunctions during operation.

[0080] S2, Dual Spring Independent Compression Energy Storage: Pull the spring ring 23 corresponding to the opening spring 11 upward and pull the spring ring 23 corresponding to the closing spring 12 downward, so that the opening spring 11 and the closing spring 12 complete independent compression energy storage respectively, and are automatically locked by the corresponding unlocking block 21; the contact fixing part 36 is kept in the normal state on the closing spring 12 by gravity.

[0081] S3. Conductive connection of the on-site line: Move the arc suppression switch to the bypass working line position so that the front cable clamp 41 covers the high-voltage conductor to be connected; rotate the rotating handle 7 so that it moves downward along the thread of the cable clamp 41 to clamp the conductor. The cable clamp 41 does not rotate to ensure that the clamping is firm and the conductivity is reliable; reliably connect the external lead-in line to the lead-in conductive rod 45 at the tail of the switch; rely on the conductive tube 42 and the conductive rod 43 to form an independent circuit for the main contact and an independent circuit for the arc contact respectively, and complete the conductive connection between the switch and the working line.

[0082] S4. Unlocking and closing, line conduction operation: The closing spring 12 unlocks and releases energy, rebounds upward to press against the contact fixing part 36 and moves vertically upward, so that the moving contact 31 and the stationary contact 32 are interference fit and locked, realizing the closing passage; after the closing is completed, pull down the spring ring 23 corresponding to the closing spring 12 to make the closing spring pull down again to compress and lock.

[0083] S5. Live-line graded tripping and forced arc extinguishing: After the operation is completed, the unlocking ring 24 corresponding to the tripping spring 11 is pulled by the insulating operating rod to release the lock; the tripping spring 11 releases energy and rebounds downward, pressing against the contact fixing part 36 and moving vertically downward, the main contacts separate first and the arc contacts separate later; the main circuit and the arc circuit are independently disconnected, and the arc is only generated in the arc contact circuit; the arc extinguishing tube 35 moves synchronously with the components to generate directional airflow, which quickly cools and extinguishes the arc;

[0084] S6. Work completion and equipment reset:

[0085] After the circuit breaker is de-energized, disconnect the external lead-in line from the wire clamp; rotate the handle 7 in the opposite direction and move it upward along the thread of the cable clamp 41 to release the wire; release the locking limit of the two sets of springs so that the opening spring 11 and closing spring 12 are restored to their natural initial state, the spring pull ring 23 is reset along the vertical slot, the equipment is stored, and the bypass live operation is completed.

[0086] The above is an exemplary description of the invention. Obviously, the specific implementation of the invention is not limited to the above-described manner. Any non-substantial improvement made using the inventive concept and technical solution of the invention, or the direct application of the inventive concept and technical solution to other situations without modification, is within the protection scope of the invention.

Claims

1. A double-spring type bypass arc suppression switch, characterized in that, include: Dual-spring energy storage drive assembly (1), unlocking operation assembly (2), contact arc extinguishing assembly (3), dual-path conductive assembly (4); The dual-spring energy storage drive assembly (1) includes a tripping spring (11) and a closing spring (12). The tripping spring (11) and the closing spring (12) are arranged vertically. Both the tripping spring (11) and the closing spring (12) are helical compression springs and are used to drive the contact arc extinguishing assembly (3) to achieve rapid disconnection and rapid closure, respectively. The unlocking operation component (2) is set as two independent structures. The two unlocking operation components (2) are respectively matched with the opening spring (11) and closing spring (12) to realize the energy storage locking and unlocking release of the corresponding opening spring (11) and closing spring (12); The contact arc extinguishing assembly (3) includes a main contact and an arc contact. The main contact and the arc contact form a graded separation structure, with the main contact disconnecting first and the arc contact disconnecting later. The dual-path conductive component (4) has two parallel conductive paths for current shunting and conduction.

2. The double-spring type bypass arc suppression switch according to claim 1, characterized in that, It also includes a switch housing (5), which is an insulating cylindrical structure with an installation cavity inside; the opening spring (11) is a helical compression spring, which is set vertically in the upper cavity of the switch housing (5), the upper end of the opening spring (11) is fixedly connected to the switch housing (5), and its lower end is in contact with the contact arc extinguishing assembly (3); the closing spring (12) is a helical compression spring, which is set vertically in the lower cavity of the switch housing (5), the lower end of the closing spring (12) is fixedly connected to the switch housing (5), and its upper end is in contact with the contact arc extinguishing assembly (3); the opening spring (11) is located directly above the closing spring (12), and the contact arc extinguishing assembly (3) is pushed by the opening spring (11) and the closing spring (12) and moves freely between the opening spring (11) and the closing spring (12).

3. The double-spring type bypass arc suppression switch according to claim 2, characterized in that, The unlocking operation component (2) includes an unlocking component housing, an unlocking stop (21), and a reset spring (22). The unlocking component housing is an insulating block structure and is fixedly connected to the outside of the switch housing (5). The unlocking stop (21) is slidably disposed inside the unlocking component housing. The unlocking stop (21) is located outside the energy storage end of the opening spring (11) or closing spring (12) and is in movable contact with the end of the opening spring (11) or closing spring (12). The reset spring (22) is a columnar compression spring. One end of the reset spring (22) is fixedly contacted with the unlocking stop (21), and the other end of the reset spring (22) is fixedly contacted with the unlocking component housing.

4. A double-spring type bypass arc suppression switch according to claim 3, characterized in that, The unlocking operation component (2) also includes a spring pull ring (23). A vertical slot is provided on the other side of the switch housing (5) away from the unlocking stop (21). The inner end of the spring pull ring (23) is provided through the vertical slot and is fixedly connected to the end of the opening spring (11) or closing spring (12). The outer end of the spring pull ring (23) is suspended outside the switch housing (5). The spring ring (23) can move up and down along the vertical slot. Pulling the spring ring (23) of the opening spring (11) upward can compress the opening spring (11) upward to complete independent energy storage; pulling the spring ring (23) of the corresponding closing spring (12) downward can compress the closing spring (12) downward to complete independent energy storage. After the release of energy, the corresponding opening spring (11) or closing spring (12) resets under its own elastic force and simultaneously drives the spring ring (23) to return to its original position along the vertical slot.

5. A double-spring type bypass arc suppression switch according to claim 3, characterized in that, The unlocking operation component (2) also includes an unlocking pull ring (24), which is installed outside the unlocking component housing. An unlocking link is hinged to the outer end of the unlocking block (21), and the other end of the unlocking link extends through to the outside of the unlocking component housing and is fixedly connected to the unlocking pull ring (24). Pulling the unlocking pull ring (24) outward can drive the unlocking block (21) to move, thereby releasing the lock on the end of the corresponding opening spring (11) or closing spring (12), so that the opening spring (11) or closing spring (12) releases its stored energy and resets.

6. A double-spring type bypass arc suppression switch according to claim 3, characterized in that, The unlocking block (21) has a guide slope on the side facing the spring. When the spring pull ring (23) drives the corresponding opening spring (11) or closing spring (12) to the energy storage position, the end of the opening spring (11) or closing spring (12) contacts the guide slope of the unlocking block (21) and pushes the unlocking block (21) to retract, so as to realize the automatic locking after the opening spring (11) or closing spring (12) stores energy.

7. A double-spring type bypass arc suppression switch according to claim 1, characterized in that, The main contact is composed of a moving contact (31) and a stationary contact (32), the arc contact is composed of a moving arc contact (33) and a stationary arc contact (34), and the contact arc extinguishing assembly (3) also includes an arc extinguishing tube (35) and a contact fixing member (36). The moving contact (31) is a columnar conductive component that can move vertically back and forth, and the stationary contact (32) is a block-shaped conductive component. The stationary contact (32) and the moving contact (31) are fixedly arranged opposite each other. The moving arc contact (33) and the moving contact (31) are rigidly connected through the contact fixing member (36) and move synchronously. The arc-extinguishing tube (35) is an insulating tubular component and is fixedly connected to the contact fixing component (36). The moving arc contact (33) and the moving contact (31) are respectively located on the inner and outer sides of the lower end of the arc-extinguishing tube (35), and the stationary arc contact (34) and the stationary contact (32) are respectively located on the inner and outer sides of the upper end of the arc-extinguishing tube (35). The lower end of the opening spring (11) abuts against the upper surface of the contact fixing member (36), and the upper end of the closing spring (12) abuts against the lower surface of the contact fixing member (36). The two are not rigidly connected. They only push the contact fixing member to move when the spring is compressed. They can separate from each other when there is no compression. The contact fixing member (36) is placed on the upper end of the closing spring (12) under gravity under normal conditions. The closing spring (12) is compressed downward to store energy independently. After unlocking and releasing energy, it rebounds upward and abuts against the contact fixing member (36) to move vertically upward to realize the closing. The moving contact (31) and the stationary contact (32) are interference-fitted and locked. The opening spring (11) is compressed upward to store energy independently. After unlocking and releasing energy, it rebounds downward and abuts against the contact fixing member (36) to move vertically downward and drive the moving contact (31) and the stationary contact (32) to unlock and separate, thereby realizing the opening. The separation stroke of the moving contact (31) and the stationary contact (32) is earlier than the separation stroke of the moving arc contact (33) and the stationary arc contact (34), forming a graded disconnection structure.

8. A double-spring type bypass arc suppression switch according to claim 7, characterized in that, The dual-path conductive component (4) includes a cable clamp (41), a conductive tube (42), a conductive rod (43), a conductive rod (44), and a flow-guiding conductive rod (45). The cable clamp (41) is located at the front end of the switch housing (5). The conductive rod (43) is located inside the conductive tube (42) and is coaxially arranged with the conductive tube (42). The arc-extinguishing tube (35) is sleeved between the conductive tube (42) and the conductive rod (43), and the conductive rod (43) passes through the upper end face of the arc-extinguishing tube (35). The upper ends of the conductive tube (42) and the conductive rod (43) are electrically connected to the cable clamp (41). The lower end of the conductive tube (42) is electrically connected to the stationary contact (32), and the lower end of the conductive rod (43) is electrically connected to the stationary arc contact (34). The upper end of the conductive rod (44) is fixed to the contact fixing member (36) and electrically connected to the moving contact (31). The lower end of the conductive rod (44) is electrically connected to the current guiding conductive rod (45). The current guiding conductive rod (45) is fixedly installed at the tail of the switch housing (5). The conductive tube (42) and the main contact form the first conductive circuit, and the conductive rod (43) and the arc contact form the second independent conductive circuit. The two circuits are physically independent and realize the current diversion and transmission of the working line. During the opening process, the two circuits are disconnected one after the other to ensure that the arc is generated between the arc contacts and reduce the current carrying load of the single conductive structure.

9. A double-spring type bypass arc suppression switch according to claim 1, characterized in that, It also includes a transparent insulating sleeve (6) and a rotating handle (7); the transparent insulating sleeve (6) is made of high-strength transparent insulating material and is fitted into the middle section of the switch housing (5). The dual-spring energy storage drive assembly (1) is located in the inner area of ​​the transparent insulating sleeve (6). The transparent insulating sleeve (6) has the functions of insulation protection, dustproof and moisture-proof and internal working condition visibility; the rotating handle (7) is installed on the top of the switch housing (5). The rotating handle (7) and the cable clamp (41) are connected by a threaded engagement. When the rotating handle (7) rotates, it moves along the thread axis of the cable clamp (41) to realize the clamping and loosening of the cable. The cable clamp (41) does not rotate with the rotating handle.

10. A bypass operation method for a double-spring type bypass arc suppression switch, characterized in that, Using the double-spring bypass arc suppression switch according to any one of claims 1-9 includes the following steps: S1. Pre-operation checks and posture adjustments: The operator holds the rotating handle (7) and moves the switch to the working position. The cable clamp (41) does not rotate. By rotating the rotating handle (7) along the thread axis, the wire can be clamped. Visually inspect the integrity of the double spring energy storage drive assembly (1) and the contact arc extinguishing assembly (3) inside the switch housing through the transparent insulating sleeve (6). Confirm that the two independent unlocking operation assemblies (2) operate smoothly, the opening spring (11) and closing spring (12) are in the natural pre-compression state, the contact fixing part (36) is placed stably on the upper end of the closing spring (12) under gravity, and all conductive parts are firmly connected without damage, loosening or insulation damage. S2, Dual Spring Independent Compression Energy Storage: Pull the spring ring (23) corresponding to the opening spring (11) upward and pull the spring ring (23) corresponding to the closing spring (12) downward, so that the opening spring (11) and the closing spring (12) complete independent compression energy storage respectively, and are automatically locked by the corresponding unlocking block (21); the contact fixing part (36) is kept in the normal state on the closing spring (12) by gravity; S3, Conductive connection of field lines: Move the arc-extinguishing switch to the bypass operation line position so that the front cable clamp (41) covers the high-voltage conductor to be connected; rotate the rotating handle (7) so that it moves downward along the thread of the cable clamp (41) to clamp the conductor. The cable clamp (41) does not rotate, ensuring that the clamping is firm and the conductivity is reliable; reliably connect the external current-leading line to the current-leading conductive rod (45) at the tail of the switch; rely on the conductive tube (42) and the conductive rod (43) to form an independent circuit for the main contact and an independent circuit for the arc contact respectively, and complete the conductive connection between the switch and the operation line; S4. Unlock and close the circuit breaker to establish line continuity: When the closing spring (12) is unlocked and released, it rebounds upward to press against the contact fixing part (36) and moves vertically upward, so that the moving contact (31) and the stationary contact (32) are interference-fitted and locked to realize the closing passage; after the closing is completed, the spring ring (23) corresponding to the closing spring (12) is pulled down to make the closing spring pull down again to compress and lock. S5. Live-line graded tripping, forced arc extinction: After the operation is completed, pull down the spring ring (23) corresponding to the closing spring (12) in advance so that the closing spring (12) can be independently compressed and stored, and automatically locked by the corresponding unlocking block (21); then pull the unlocking ring (24) corresponding to the opening spring (11) through the insulating operating rod to release the lock; the opening spring (11) releases energy and rebounds downward, resisting and squeezing the contact fixing part (36) to move vertically downward, the main contact separates first and the arc contact separates later; the main circuit and the arc circuit are independently disconnected, and the arc is only generated in the arc contact circuit; the arc extinguishing tube (35) moves synchronously with the component to generate directional airflow, which quickly cools and extinguishes the arc; S6. Work completion and equipment reset: After the circuit breaker is de-energized, disconnect the external lead-in line and the wire clamp connection, release the locking limit of the two sets of springs, so that the opening spring (11) and closing spring (12) are restored to their natural initial state, the spring pull ring (23) is reset along the vertical slot, the equipment is stored, and the bypass live operation is completed.

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