A voltage transformer with a break

Abstract

The present application discloses a voltage transformer with a break, which belongs to the technical field of voltage transformers. It includes a voltage transformer body, an inner conductor and a switch mechanism. The voltage transformer body has a shell, and a sealing cover made of rubber material is fixed in the through hole; the inner conductor includes a first conductor, an intermediate conductor and a second conductor, the first conductor and the second conductor are located in the same straight line, the intermediate conductor is vertically arranged, and both ends of the intermediate conductor are provided with a first inclined surface, and the lower end of the first conductor and the upper end of the second conductor are provided with a second inclined surface; the switch mechanism is used to drive the intermediate conductor to move horizontally so that the first inclined surface fits or disengages from the second inclined surface; the switch mechanism includes a one-way forward component, a one-way retracting component and a switching component, the intermediate conductor is connected to a driving tube, the sealing cover is connected to a transmission sleeve, and the switching component is used to switch the matching state of the one-way forward component and the one-way retracting component with the driving tube respectively. The present application can meet the operation of the switch mechanism while ensuring the sealing of the shell.

Description

Technical Field

[0001] The present application belongs to the technical field of voltage transformers and relates to a voltage transformer with a break. Background Art

[0002] Before GIS is put into operation on site, various components need to be tested and verified on site, and only after passing the verification can it be powered on and put into operation.

[0003] However, the voltage transformer cannot withstand too high a test voltage, so it is necessary to manually remove the connecting conductor between the voltage transformer and the GIS to form a break between the GIS and the voltage transformer. In this way, when the GIS is subjected to a high voltage withstand test, the voltage transformer will not be affected. However, this operation step is relatively cumbersome.

[0004] Therefore, the Chinese patent application number CN202322709717.0 discloses a voltage transformer with a break, which includes an inner conductor and a switching component. The inner conductor includes an intermediate conductor and a side conductor one and a side conductor two arranged on both sides of the intermediate conductor. The side conductor one and the side conductor two are coaxial and fixedly arranged in the voltage transformer. The intermediate conductor is hingedly arranged in the voltage transformer. The switching component is used to make the intermediate conductor, the side conductor one and the side conductor two realize conductive connection or to form a break between the side conductor one and the side conductor two that meets the insulation test margin. After the break is formed, the GIS can be subjected to a separate withstand voltage test verification, avoiding the trouble of repeated disassembly and assembly of the voltage transformer.

[0005] However, the installation of the switching component inevitably requires opening a through hole on the voltage transformer housing to facilitate the application of power from the outside to move the switching component. Although a sealing ring can be added at the matching position between the inner side of the through hole and the switching component to ensure the sealing of the housing, the switching component is a moving structure and the sealing ring is a dynamic seal with limited sealing effect. After long-term use, the seal may easily fail. Summary of the invention

[0006] In order to achieve both on-off operation and sealing, a voltage transformer with a break is provided.

[0007] The present application provides a voltage transformer with a break, which is specifically implemented by the following technical solutions:

[0008] A voltage transformer with a break, comprising a voltage transformer body, an inner conductor and a switching mechanism, wherein the voltage transformer body has a shell, the shell is provided with a through hole, and a sealing cover made of a rubber material is fixed in the through hole; the inner conductor comprises a first conductor, an intermediate conductor and a second conductor, wherein the first conductor and the second conductor are both fixedly arranged in the voltage transformer body, the first conductor and the second conductor are located in the same straight line, the intermediate conductor is arranged vertically, both ends of the intermediate conductor are provided with a first inclined surface, and the lower end of the first conductor and the upper end of the second conductor are provided with a second inclined surface; the switching mechanism is used to drive the intermediate conductor to move horizontally so that the first inclined surface is attached to or separated from the second inclined surface; the switching mechanism comprises a single A forward component, a one-way retract component and a switching component, wherein the intermediate conductor is connected to a driving tube, the sealing cover is connected to a transmission sleeve, and the switching component is used to switch the matching status of the one-way forward component and the one-way retract component with the driving tube respectively; when the one-way forward component is matched with the driving tube, the intermittent pressing force of the sealing cover will be transmitted to the driving tube through the transmission sleeve and the one-way forward component, so as to drive the intermediate conductor to move forward step by step to disengage from the first conductor and the second conductor; when the one-way retract component is matched with the driving tube, the intermittent pressing force of the sealing cover will be transmitted to the driving tube through the transmission sleeve and the one-way retract component, so as to drive the intermediate conductor to move backward step by step to contact the first conductor and the second conductor.

[0009] Through the above technical solution, by setting a sealing cover, a one-way forward component, a one-way retracting component and a switching component, the switching component switches the matching state of the one-way forward component and the one-way retracting component with the driving tube respectively. When the one-way forward component cooperates with the driving tube, the intermittent pressing force of the sealing cover will be transmitted to the driving tube through the transmission sleeve and the one-way forward component to drive the intermediate conductor to step forward to disengage from the first conductor and the second conductor, thereby realizing the disconnection between the voltage transformer body and the external high voltage electricity, so as to facilitate the withstand voltage test. When the one-way retracting component cooperates with the driving tube, the intermittent pressing force of the sealing cover will be transmitted to the driving tube through the transmission sleeve and the one-way retracting component to drive the intermediate conductor to step backward to contact the first conductor and the second conductor, thereby realizing the passage between the voltage transformer body and the external high voltage electricity.

[0010] Furthermore, since the power source comes from repeatedly pressing the sealing cover, the deformation amplitude of the sealing cover itself is small, that is, the disturbance to the connection position between the sealing cover and the shell is small, thereby ensuring the sealing of the shell.

[0011] Secondly, the distance of pressing the sealing cover multiple times will be superimposed through the one-way forward component and the one-way retracting component to lengthen the moving distance of the middle conductor, thereby ensuring the stability of the on-off.

[0012] Optionally, the sealing cover includes a trigger part, a conical ring part and a connecting part from the middle to the periphery, the connecting part is bonded and fixed to the inner wall of the through hole, the trigger part is bullet-shaped, the convex surface of the trigger part is located on the outside of the through hole, and the concave part of the trigger part is connected to the transmission sleeve.

[0013] Through the above technical solution, by providing the bullet-shaped trigger part and the cone ring part, the axial elastic deformation displacement distance of the sealing cover can be greatly increased, and the structural stability of the sealing cover can be ensured in the absence of pressing.

[0014] Optionally, a disc is coaxially fixed to the middle part of the sealing cover, and the outer circumference of the disc is coaxially rotatably connected with the port of the transmission sleeve; a fixing sleeve coaxially arranged with the through hole is fixed to the inner wall of the shell, and a return spring is fixed between the fixing sleeve and the transmission sleeve, and the elastic force of the return spring is used to force the transmission sleeve to move in a direction away from the intermediate conductor; one end of the driving tube is relatively rotatably arranged with the intermediate conductor, and the surface of the other end of the driving tube is provided with a plurality of axially spaced limit grooves, and the outer circumferential surface of the driving tube is provided with a first free-travel groove in the shape of a strip and a second free-travel groove in the shape of a strip extending axially, and the first free-travel groove and the second free-travel groove are respectively located on both sides of the circumference of the limit groove and are connected to the limit groove; the one-way forward component includes a first limit block, a second limit block, a first spring and a second spring, the first limit block is radially slidably connected with the transmission sleeve, and the first spring is used to drive the first limit block to slide in a direction close to the axial center of the transmission sleeve, and one end of the first limit block is provided with a first guide surface, and the second limit block The second spring is used to drive the second limit block to slide in the direction close to the axis of the fixed sleeve, and a second guide surface is provided at one end of the second limit block, and the first guide surface and the second guide surface are both set away from the intermediate conductor; the one-way retraction component includes a third limit block, a fourth limit block, a third spring and a fourth spring, the third limit block is connected to the radial sliding connection of the transmission sleeve, the third limit block is located on one side of the first limit block along the circumference of the transmission sleeve, the third spring is used to drive the third limit block to slide in the direction close to the axis of the transmission sleeve, a third guide surface is provided at one end of the third limit block, the fourth limit block is connected to the radial sliding connection of the fixed sleeve, the fourth limit block is located on one side of the second limit block along the circumference of the fixed sleeve, the fourth spring is used to drive the fourth limit block to slide in the direction close to the axis of the fixed sleeve, a fourth guide surface is provided at one end of the fourth limit block, and the third guide surface and the fourth guide surface are both set toward the intermediate conductor; the switching component is used to change the rotation angle of the driving tube.

[0015] Through the above technical solution, when the middle conductor needs to be advanced to break the circuit, the first limit block and the second limit block are respectively located in the two limit grooves, the third limit block and the fourth limit block are located in the first idle groove, the sealing cover is pressed, and the sealing cover drives the transmission sleeve to advance a certain distance (the transmission sleeve moves in the direction toward the middle conductor for advancement, and moves in the direction away from the middle conductor for retreat). Since the first limit block abuts against the groove wall of the limit groove, the first limit block will drive the driving tube to advance a certain distance, and during the advancement of the driving tube, the groove edge of the limit groove abuts against the second guide surface of the second limit block, which will force the second limit block to retract (retraction refers to the second limit block sliding in the direction away from the axis of the transmission sleeve), the second spring is compressed, the reset spring is compressed, and after the first limit block moves into place, the new limit groove moves to the position opposite to the second limit block. The first limit block is in a state of being directly opposite to the new limit groove, and the first spring is in a state of being directly opposite to the new limit groove, and the ...

[0016] When the middle conductor needs to be retracted to pass through, the rotation angle of the driving tube is changed by switching the assembly, while the angles of the transmission sleeve and the fixed tube remain unchanged. At this time, the first limit block and the second limit block are both located in the second free travel groove, and the third limit block and the fourth limit block are respectively located in the two limit grooves. The sealing cover is pressed, and the sealing cover drives the transmission sleeve to advance a certain distance (the transmission sleeve moves in the direction toward the middle conductor for advancement, and the transmission sleeve moves in the direction away from the middle conductor for retraction). The reset spring is compressed, and the fourth limit block abuts against the groove wall of the limit groove to limit the advancement of the driving tube. During this process, the third guide surface of the third limit block abuts against the groove edge of the limit groove, and the third limit block retracts (retraction refers to the third limit block sliding in the direction away from the axis of the transmission sleeve), the third spring is compressed, and after the third limit block moves into place with the transmission sleeve, the third limit block moves to a state facing the new limit groove, and the third spring restores its deformation and forces The third limit block slides and inserts into the new limit groove; then the sealing cover is loosened, the reset spring restores its deformation, and the reset spring forces the transmission sleeve and the third limit block to retreat a certain distance. During this process, since the third limit block abuts against the groove wall of the limit groove, the third limit block will drive the driving tube to retreat a certain distance, and during the retreat of the driving tube, the groove edge of the limit groove abuts against the fourth guide surface of the fourth limit block, which will force the fourth limit block to retract (retraction refers to the fourth limit block sliding in the direction away from the axis of the transmission sleeve), the fourth spring is compressed, and after the driving tube retreats into place, the new limit groove moves to a state facing the fourth limit block, the fourth spring restores its deformation and forces the fourth limit block to slide and insert into the new limit groove, that is, through one press and release, a step-by-step retreat of the intermediate conductor is completed, and through multiple presses and releases, multiple step-by-step retreats of the intermediate conductor are completed, so that the first inclined surface and the second inclined surface are in contact, thereby completing the passage.

[0017] Optionally, the switching assembly includes a sleeve, a steel ball, a fifth spring and a fixed rod, the sleeve being fixedly connected to the shell, the sleeve being sleeved on the driving tube, the steel ball being radially slidingly connected to the inner wall of the sleeve, and the elastic force of the fifth spring driving the steel ball to slide along the axial direction close to the driving tube; the outer peripheral surface of the driving tube is provided with a first hole and a second hole extending axially; one end of the fixed rod is fixed to the middle part of the sealing cover, and the other end of the fixed rod extends into the driving tube, the fixed rod is fixed with a first sheet body arranged along its own radial direction, and the inner wall of the driving tube is fixed with a second sheet body and a third sheet body arranged along its own radial direction; when the fixed rod rotates forward and reversely, the first sheet body thereon abuts against the second sheet body or the third sheet body to drive the driving tube to rotate to a state where the first hole or the second hole thereon is facing the steel ball.

[0018] Through the above technical scheme, in the initial state, the steel ball is inserted into the first hole under the elastic force of the fifth spring, the first limit block and the second limit block are respectively located in the two limit grooves, the third limit block and the fourth limit block are respectively located in the first idle groove, and when the angle of the driving tube needs to be changed, the trigger part is elastically deformed and deflected in the positive direction by a certain angle, the trigger part drives the fixed rod and the first sheet body to deflect positively, and the first sheet body abuts against the second sheet body to drive the driving tube to rotate positively until the second hole is opposite to the steel ball, and the steel ball is inserted into the second hole to limit the angle of the driving tube. At this time, the first limit block and the second limit block are both located in the second idle groove, the third limit block and the fourth limit block are respectively located in the two limit grooves, and then the trigger part is released, and the trigger part restores the deformation, that is, the trigger part drives the fixed rod and the first sheet body to deflect in the opposite direction to the initial position.

[0019] When the angle of the driving tube needs to be reset, the trigger part is elastically deformed and deflected in the reverse direction by a certain angle. The trigger part drives the fixing rod and the first sheet to deflect in the reverse direction. The first sheet abuts against the third sheet to drive the driving tube to rotate in the reverse direction until the first hole is opposite to the steel ball. The steel ball is inserted into the first hole to limit the angle of the driving tube. Then the trigger part is released and the trigger part restores its deformation, that is, the trigger part drives the fixing rod and the first sheet to deflect in the positive direction to the initial position.

[0020] Optionally, the end of the driving tube is rotatably connected to a vertically arranged rubber sleeve, and the rubber sleeve is sleeved on the middle conductor.

[0021] Through the above technical solution, by the sleeve arrangement of the rubber sleeve and the intermediate conductor, the intermediate conductor has the vertical damping sliding characteristics relative to the driving tube, that is, the height position of the intermediate conductor can be adjusted by damping. Therefore, when the intermediate conductor retreats to conduct, the height position of the intermediate conductor will be corrected through the cooperation of the first inclined surface and the second inclined surface, thereby improving the cooperation accuracy.

[0022] Optionally, the outer peripheral surface of the driving tube has an avoidance groove; when the first inclined surface is respectively in contact with the second inclined surface, the third limit block is located in the limit groove, and the fourth limit block is located in the avoidance groove, and the tension of the return spring will drive the driving tube to move in the direction toward the sealing cover through the cooperation between the third limit block and the inner wall of the limit groove.

[0023] Through the above technical solution, when the first inclined surface is respectively fitted with the second inclined surface, that is, when the middle conductor is turned on, the third limit block is located in the limit groove, and the fourth limit block is located in the avoidance groove. At this time, the sealing cover is pressed again, and the transmission sleeve moves forward a certain distance relative to the fixed sleeve. The reset spring is compressed, and the third limit block falls into the front limit groove. At this time, the sealing cover is released and the reset spring is compressed. Since the fourth limit block is located in the avoidance groove, the fourth limit block has no limiting effect on the driving tube, and only the third limit block has no limiting effect on the driving tube. The tension of the reset spring will drive the driving tube to move in the direction toward the sealing cover through the cooperation between the third limit block and the inner wall of the limit groove, so that the first inclined surface is more closely fitted to the second inclined surface, thereby improving the conduction stability.

[0024] Optionally, both the first conductor and the second conductor have a third slope, the second slope is away from the sealing cover, and the third slope is toward the sealing cover; both ends of the intermediate conductor are integrally formed with wavy sections, and the ends of the wavy sections are integrally formed with hooks, and the hooks have a fourth slope and the first slope; when the intermediate conductor retracts, the end of the hook abuts against the first slope and the wavy section elastically deforms in a direction away from the sealing cover; when the intermediate conductor advances to be in the same straight line as the first conductor, the elastic force of the wavy section forces the hook to move away from the intermediate conductor, the first slope is attached to the second slope, and the fourth slope is attached to the third slope.

[0025] Through the above technical solution, when conduction is required, the intermediate conductor retreats, and the end of the hook abuts against the first inclined surface. The intermediate conductor continues to retreat, and the undulating section elastically deforms in the direction away from the sealing cover, that is, the distance between the two hooks is shortened, and the hook elastically displaces to avoid the second inclined surface; the intermediate conductor continues to retreat (the intermediate conductor is closer to the sealing cover than the first conductor), and the hook passes over the first conductor and the second conductor. At this time, the end of the hook abuts against the third inclined surface; the intermediate conductor is advanced until the intermediate conductor advances to the same straight line as the first conductor. During this process, the fourth inclined surface of the hook gradually fits against the third inclined surface, the first inclined surface of the hook gradually fits against the second inclined surface, and the undulating section gradually shifts to a vertical state. The elastic force of the undulating section will force the hook to move away from the intermediate conductor, the first inclined surface fits more closely against the second inclined surface, and the fourth inclined surface fits more closely against the third inclined surface, thereby greatly improving the contact stability of the intermediate conductor with the first conductor and the second conductor respectively.

[0026] In summary, by setting the specific shape of the intermediate conductor and utilizing the long-distance forward and long-distance retreat characteristics of the intermediate conductor, the intermediate conductor can move a long distance, so that the hook can elastically avoid and elastically cooperate with the second inclined surface and the third inclined surface, and then utilize the process of the wavy section gradually shifting to a vertical state, so that the elastic force of the wavy section forces the hook to move away from the intermediate conductor, the first inclined surface fits more closely to the second inclined surface, and the fourth inclined surface fits more closely to the third inclined surface, thereby greatly improving the contact stability of the intermediate conductor with the first conductor and the second conductor respectively.

[0027] Optionally, a counterweight is provided at the lower portion of the intermediate conductor.

[0028] The above technical solution can ensure that the middle conductor is in a vertical state, thereby reducing the friction torque of the driving tube and causing the middle conductor to deviate.

[0029] Optionally, a fixing ring coaxial with the through hole is fixed to the outer side of the shell, and a plurality of stainless steel sheets are fixed to the inner diameter of the fixing ring. The stainless steel sheets are located in the radial plane of the trigger part and abut against the convex surface of the trigger part.

[0030] Through the above technical solution, the stainless steel sheet abuts against the convex surface of the trigger part to limit the shape of the trigger part, so that the overall shape of the sealing cover is in a stable state to reduce the occurrence of sealing failure caused by excessive deformation of the sealing cover.

[0031] The beneficial effects of this application are:

[0032] 1. By setting a sealing cover, a one-way forward component, a one-way retracting component and a switching component, the switching component switches the matching state of the one-way forward component and the one-way retracting component with the driving tube respectively. When the one-way forward component is matched with the driving tube, the intermittent pressing force of the sealing cover will be transmitted to the driving tube through the transmission sleeve and the one-way forward component to drive the intermediate conductor to move forward step by step to separate from the first conductor and the second conductor, thereby realizing the disconnection of the voltage transformer body and the external high voltage, so as to facilitate the withstand voltage test. When the one-way retraction component cooperates with the driving tube, the intermittent pressing force of the sealing cover will be transmitted to the driving tube through the transmission sleeve and the one-way retraction component to drive the intermediate conductor to step back to contact the first conductor and the second conductor, thereby realizing the passage between the voltage transformer body and the external high voltage electricity; and, since the power source comes from repeatedly pressing the sealing cover, the deformation amplitude of the sealing cover itself is small, that is, the disturbance to the connection position between the sealing cover and the shell is small, thereby ensuring the sealing of the shell; secondly, the distance of multiple pressings of the sealing cover will be superimposed by the one-way forward component and the one-way retraction component to lengthen the moving distance of the intermediate conductor, thereby ensuring the stability of the on-off;

[0033] 2. The rubber sleeve and the intermediate conductor are sheathed together, so that the intermediate conductor has the characteristic of vertical damping sliding relative to the driving tube, that is, the height position of the intermediate conductor can be adjusted by damping. Therefore, when the intermediate conductor is retracted for conduction, the height position of the intermediate conductor is corrected by the cooperation of the first inclined surface and the second inclined surface, thereby improving the cooperation accuracy;

[0034] 3. By setting the specific shape of the intermediate conductor and utilizing the long-distance forward and long-distance retreat characteristics of the intermediate conductor, the intermediate conductor can move a long distance, so that the hook can elastically avoid and elastically fit to the second inclined surface and the third inclined surface, and then utilize the process of the wavy section gradually shifting to a vertical state, so that the elastic force of the wavy section forces the hook to move away from the intermediate conductor, the first inclined surface is more closely fitted to the second inclined surface, and the fourth inclined surface is more closely fitted to the third inclined surface, thereby greatly improving the contact stability of the intermediate conductor with the first conductor and the second conductor respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the voltage transformer body of Example 1.

[0036] Figure 2 It is a partial cross-sectional view of the casing in the conductive state of Example 1.

[0037] Figure 3 It is a partial cross-sectional view of the shell in the fracture state of Example 1.

[0038] Figure 4 yes Figure 2 A partial enlarged view of point A in the middle.

[0039] Figure 5 Schematic diagram of the driving tube of Example 1.

[0040] Figure 6 yes Figure 2 Cross-sectional view along the BB direction.

[0041] Figure 7 yes Figure 2 Cross-sectional view along CC direction.

[0042] Figure 8 yes Figure 2 Cross-sectional view along the DD direction.

[0043] Fig. 9 yes Figure 3 A partial enlarged view of point E in the middle.

[0044] Fig.10 It is a cross-sectional view of Example 1 for showing the positional relationship among the first limit block, the third limit block, the limit groove and the second idle groove after the angle of the drive tube is adjusted.

[0045] Fig.11 It is a partial cross-sectional view of the shell in the fracture state of Example 2.

[0046] Fig.12 Schematic diagram of the intermediate conductor of Example 3.

[0047] Fig.13 It is a partial cross-sectional view of the shell in the fracture state of Example 4.

[0048] Fig.14 Schematic diagram of the intermediate conductor of Example 5.

[0049] Fig.15 This is a schematic diagram of Example 5 for showing the process change of the intermediate conductor gradually cooperating with the first conductor and the second conductor.

[0050] Explanation of reference numerals: 10, sealing cover; 101, triggering part; 102, cone ring part; 103, connecting part; 105, cross groove; 100, voltage transformer body; 1001, through hole; 1002, fixing ring; 1003, stainless steel sheet; 110, shell; 11, intermediate conductor; 111, counterweight; 112, first inclined plane; 113, first annular groove; 115, rubber sleeve; 116, undulating section; 117, hook; 118, fourth inclined plane; 1151, third annular groove; 12, first conductor; 121, second inclined plane; 122, third inclined plane; 13, second conductor; 15, driving tube; 151, first annular part; 152, first hole; 153, second hole; 155, limit groove; 156, first free-travel groove; 157, second free-travel groove ;158, avoidance groove;16, sleeve;161, steel ball;162, fifth spring;163, fifth slide groove;165, support rod;17, fixed sleeve;18, transmission sleeve;181, second ring groove;182, reset spring;19, fixed rod;191, first sheet;192, second sheet;193, third sheet;195, second ring;196, disc;21, first limit block;211, first guide surface;22, second limit block;221, second guide surface;23, first spring;231, first slide groove;24, second spring;241, second slide groove;31, third limit block;311, third guide surface;32, fourth limit block;321, fourth guide surface;33, third spring;331, third slide groove;34, fourth spring. DETAILED DESCRIPTION

[0051] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the attached Figure 1-Figure 15 Shown in.

[0052] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0053] Example 1

[0054] Embodiment 1 discloses a voltage transformer with a break, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the voltage transformer with a break includes a voltage transformer body 100, an inner conductor and a switching mechanism, wherein the voltage transformer body 100 has a shell 110, a circular through hole 1001 is opened on one side of the shell 110, and a sealing cover 10 made of rubber is fixed in the through hole 1001. Specifically, the sealing cover 10 includes a trigger part 101, a cone ring part 102 and a connecting part 103 from the middle to the periphery, and the connecting part 103 is bonded and fixed to the inner wall of the through hole 1001. The trigger part 101 is in the shape of a bullet head, and the outer convex surface of the trigger part 101 is located on the outside of the through hole 1001. The outer convex surface of the trigger part 101 is provided with a cross groove 105, so that an external tool can press or screw the trigger part 101 through the cross groove 105.

[0055] The inner conductor includes a first conductor 12, an intermediate conductor 11 and a second conductor 13, wherein the first conductor 12 and the second conductor 13 are both fixedly arranged in the voltage transformer body 100, the first conductor 12 and the second conductor 13 are located on the same straight line, and there is a vertical gap between the first conductor 12 and the second conductor 13, and the gap is a fracture. The intermediate conductor 11 is vertically arranged, and both ends of the intermediate conductor 11 are provided with a first inclined surface 112, and the lower end of the first conductor 12 and the upper end of the second conductor 13 are provided with a second inclined surface 121.

[0056] The on-off mechanism is used to drive the intermediate conductor 11 to move horizontally so that the first inclined surface 112 is attached to or separated from the second inclined surface 121. When the first inclined surface 112 and the second inclined surface 121 are in contact, the first conductor 12, the intermediate conductor 11 and the second conductor 13 are in a circuit state; when the first inclined surface 112 and the second inclined surface 121 are out of contact, the first conductor 12, the intermediate conductor 11 and the second conductor 13 are in a circuit-breaking state.

[0057] like Figure 2 , Figure 4 , Figure 5 , Figure 6 As shown, the on-off mechanism includes a one-way forward component, a one-way retractable component and a switching component. A counterweight block 111 is fixed to the lower part of the intermediate conductor 11. The intermediate conductor 11 is connected to a driving tube 15. The driving tube 15 is made of insulating material and is horizontally arranged. Specifically, a first annular groove 113 is provided on one side surface of the middle part of the intermediate conductor 11, and a first ring portion 151 is fixed to one end of the driving tube 15. The first ring portion 151 is rotatably matched with the first annular groove 113.

[0058] The outer circumference of the driving tube 15 is provided with a first hole 152 and a second hole 153 extending in the axial direction; the outer circumference of the driving tube 15 is provided with a plurality of axially spaced limiting grooves 155; the outer circumference of the driving tube 15 is provided with a first strip-shaped free-travel groove 156 and a second strip-shaped free-travel groove 157 extending in the axial direction; the first free-travel groove 156 and the second free-travel groove 157 are respectively located on both sides of the circumference of the limiting groove 155 and are connected to the limiting groove 155.

[0059] The switching assembly is used to change the rotation angle of the driving tube 15 relative to the intermediate conductor 11. Specifically, the switching assembly includes a sleeve 16, a steel ball 161, a fifth spring 162 and a fixed rod 19. The sleeve 16 is fixedly connected to the shell 110 through a support rod 165. The sleeve 16 is sleeved on the driving tube 15, that is, the driving tube 15 can rotate relative to the sleeve 16. The inner wall of the sleeve 16 is provided with a fifth slide groove 163, and the fifth slide groove 163 is extended radially along the sleeve 16. The steel ball 161 slides with the fifth slide groove 163. The fifth spring 162 is located in the fifth slide groove 163. The elastic force of the fifth spring 162 drives the steel ball 161 to slide along the axial direction close to the driving tube 15 to force the steel ball 161 to be inserted into the first hole 152 or the second hole 153.

[0060] The fixing rod 19 is coaxially arranged with the driving tube 15, one end of the fixing rod 19 is fixed to the middle part of the trigger part 101, and the other end of the fixing rod 19 extends into the driving tube 15. The fixing rod 19 is fixed with a first sheet 191 arranged along its own radial direction, and the inner wall of the driving tube 15 is fixed with a second sheet 192 and a third sheet 193 arranged along its own radial direction, and the second sheet 192 and the third sheet 193 are located on the circumferential movement path of the first sheet 191.

[0061] A disc 196 is coaxially fixed to the fixed rod 19, and a second ring portion 195 is fixed to the outer circumference of the disc 196. A transmission sleeve 18 is provided on the outer side of the fixed rod 19. The transmission sleeve 18 is coaxial with the fixed rod 19, and a second annular groove 181 is provided on the inner wall of the transmission sleeve 18. The second ring portion 195 rotatably cooperates with the second annular groove 181.

[0062] A fixing sleeve 17 coaxially arranged with the through hole 1001 is fixed to the inner wall of the shell 110, and a reset spring 182 is fixed between the fixing sleeve 17 and the transmission sleeve 18, that is, the two ends of the reset spring 182 are respectively fixedly connected to the fixing sleeve 17 and the transmission sleeve 18, and the reset spring 182 is coaxially arranged with the driving tube 15. The fixing sleeve 17 can prevent the transmission sleeve 18 from spinning, and the elastic force of the reset spring 182 is used to force the transmission sleeve 18 to move in a direction away from the intermediate conductor 11.

[0063] like Figure 4 , Figure 5 , Figure 7 , Figure 8 As shown, the one-way forward component includes a first limit block 21, a second limit block 22, a first spring 23 and a second spring 24. The inner wall of the transmission sleeve 18 is provided with a first slide groove 231 extending radially, the first limit block 21 slides and cooperates with the first slide groove 231, the first spring 23 is located in the first slide groove 231, the first spring 23 is used to drive the first limit block 21 to slide along the axial direction close to the transmission sleeve 18, and one end of the first limit block 21 is provided with a first guide surface 211; the inner wall of the fixed sleeve 17 is provided with a second slide groove 241 extending radially, the second limit block 22 slides and cooperates with the second slide groove 241, the second spring 24 is located in the second slide groove 241, the second spring 24 is used to drive the second limit block 22 to slide along the axial direction close to the fixed sleeve 17, and one end of the second limit block 22 is provided with a second guide surface 221, and the first guide surface 211 and the second guide surface 221 are both arranged away from the intermediate conductor 11.

[0064] like Figure 3 , Figure 8 , Fig. 9 , Fig.10 As shown, the one-way retraction component includes a third limit block 31, a fourth limit block 32, a third spring 33 and a fourth spring 34. The inner wall of the transmission sleeve 18 is provided with a radially extending third slide groove 331. The third slide groove 331 is located on one side of the first slide groove 231 along the circumference of the transmission sleeve 18. The third limit block 31 slides with the third slide groove 331. The third spring 33 is located in the third slide groove 331. The third spring 33 is used to drive the third limit block 31 to slide along the axial direction close to the transmission sleeve 18. One end of the third limit block 31 is provided with a third three guide surfaces 311; the inner wall of the fixed sleeve 17 is provided with a radially extending fourth slide groove (not marked in the figure), the fourth slide groove is located on one side of the second slide groove 241 along the circumference of the fixed sleeve 17, the fourth limit block 32 slides with the fourth slide groove, the fourth spring 34 is located in the fourth slide groove, the fourth spring 34 is used to drive the fourth limit block 32 to slide along the axial direction close to the fixed sleeve 17, one end of the fourth limit block 32 is provided with a fourth guide surface 321, and the third guide surface 311 and the fourth guide surface 321 are both arranged toward the middle conductor 11.

[0065] The implementation principle of the first embodiment is as follows: when the intermediate conductor 11 needs to be advanced to break the circuit, the steel ball 161 is inserted into the first hole 152 under the elastic force of the fifth spring 162, the first limit block 21 and the second limit block 22 are respectively located in the two limit grooves 155, and the third limit block 31 and the fourth limit block 32 are located in the first idle groove 156 (see Figure 5 and Figure 7 ), press the sealing cover 10, the sealing cover 10 drives the transmission sleeve 18 to move forward a certain distance (the transmission sleeve 18 moves in the direction toward the middle conductor 11 for advancement, and moves in the direction away from the middle conductor 11 for retreat). Since the first limit block 21 abuts against the groove wall of the limit groove 155, the first limit block 21 will drive the driving tube 15 to move forward a certain distance, and during the advancement of the driving tube 15, the notch edge of the limit groove 155 abuts against the second guide surface 221 of the second limit block 22, which will force the second limit block 22 to retract (retraction refers to the second limit block 22 sliding in the direction away from the axis of the transmission sleeve 18), the second spring 24 is compressed, the reset spring 182 is compressed, and after the first limit block 21 moves into place, the new limit groove 155 moves to a state facing the second limit block 22, the second spring 24 recovers its deformation and forces the second limit block 22 to slide and insert into the new limit groove 155, and then releases. The sealing cover 10 and the reset spring 182 restore their deformation. The reset spring 182 forces the transmission sleeve 18 and the first limit block 21 to retreat a certain distance. During this process, the first guide surface 211 of the first limit block 21 abuts against the notch edge of the limit groove 155, and the first limit block 21 retracts (retraction refers to the first limit block 21 sliding in the direction away from the axial center of the transmission sleeve 18). The first spring 23 is compressed. After the first limit block 21 retreats into place with the transmission sleeve 18, the first limit block 21 moves to a state facing the new limit groove 155. The first spring 23 restores its deformation and forces the first limit block 21 to slide and insert into the new limit groove 155, that is, by pressing and releasing once, the intermediate conductor 11 is advanced one step at a time, and by pressing and releasing multiple times, the intermediate conductor 11 is advanced multiple steps at a time, thereby increasing the disconnection distance of the intermediate conductor 11 to achieve circuit breaking, so as to facilitate the withstand voltage test.

[0066] When the middle conductor 11 needs to be retracted to pass through, the rotation angle of the driving tube 15 is changed by switching the assembly. Specifically, the trigger part 101 can be elastically deformed and deflected in a certain angle in the positive direction by the cooperation of the external tool and the cross groove 105 (at this time, the elastic deformation degree of the conical part is larger, and the elastic deformation degree of the connecting part 103 is smaller). The trigger part 101 drives the fixing rod 19 and the first sheet 191 to deflect positively. The first sheet 191 abuts against the second sheet 192 to drive the driving tube 15 to rotate positively until the second hole 153 is opposite to the steel ball 161. The steel ball 161 is inserted into the second hole 153 to limit the angle of the driving tube 15. At this time, the first limit block 21 and the second limit block 22 are both located in the second free travel groove 157, and the third limit block 31 and the fourth limit block 32 are respectively located in the two limit grooves 155 (see Fig. 9 and Fig.10 ), and then release the trigger part 101, and the trigger part 101 recovers its deformation, that is, the trigger part 101 drives the fixing rod 19 and the first sheet 191 to deflect in the opposite direction to the initial position.

[0067] The angle between the transmission sleeve 18 and the fixed tube remains unchanged, and then the sealing cover 10 is pressed, and the sealing cover 10 drives the transmission sleeve 18 to move forward a certain distance (the transmission sleeve 18 moves in the direction toward the middle conductor 11 for advancement, and the transmission sleeve 18 moves in the direction away from the middle conductor 11 for retreat), the reset spring 182 is compressed, and the fourth limit block 32 abuts against the groove wall of the limit groove 155 to limit the advancement of the driving tube 15. In this process, the third guide surface 311 of the third limit block 31 abuts against the limit groove 155. 55, the third limit block 31 retracts (retraction means that the third limit block 31 slides away from the axial direction of the transmission sleeve 18), the third spring 33 is compressed, and after the third limit block 31 moves into position with the transmission sleeve 18, the third limit block 31 moves to a state facing the new limit groove 155, the third spring 33 restores the deformation and forces the third limit block 31 to slide and insert into the new limit groove 155; then the sealing cover 10 is released, the reset spring 182 restores the deformation, and the reset spring 182 forces the transmission sleeve 18 and the third limit block 31 retreat a distance. During this process, since the third limit block 31 abuts against the groove wall of the limit groove 155, the third limit block 31 will drive the driving tube 15 to retreat a distance. During the retreat of the driving tube 15, the notch edge of the limit groove 155 abuts against the fourth guide surface 321 of the fourth limit block 32, forcing the fourth limit block 32 to retract (retraction refers to the fourth limit block 32 sliding away from the axial direction of the transmission sleeve 18), and the fourth spring 34 is compressed. When the driving tube 15 is After retreating into place, the new limit groove 155 moves to a state facing the fourth limit block 32, and the fourth spring 34 restores its deformation and forces the fourth limit block 32 to slide and insert into the new limit groove 155, that is, through one press and release, a step-by-step retreat of the intermediate conductor 11 is completed, and through multiple presses and releases, multiple step-by-step retreats of the intermediate conductor 11 are completed, so that the first inclined surface 112 and the second inclined surface 121 are in contact, thereby realizing the passage between the voltage transformer body 100 and the external high voltage electricity.

[0068] When the angle of the driving tube 15 needs to be reset, the trigger part 101 is elastically deformed and deflected in the reverse direction by a certain angle. The trigger part 101 drives the fixing rod 19 and the first sheet 191 to deflect in the reverse direction. The first sheet 191 abuts against the third sheet 193 to drive the driving tube 15 to rotate in the reverse direction until the first hole 152 is opposite to the steel ball 161. The steel ball 161 is inserted into the first hole 152 to limit the angle of the driving tube 15. Then the trigger part 101 is released and the trigger part 101 restores its deformation, that is, the trigger part 101 drives the fixing rod 19 and the first sheet 191 to deflect in the positive direction to the initial position.

[0069] In summary, since the power source comes from repeatedly pressing the sealing cover 10 , the deformation amplitude of the sealing cover 10 itself is small, that is, the connection position between the sealing cover 10 and the shell 110 is less disturbed, thereby ensuring the sealing of the shell 110 .

[0070] Secondly, the distance of pressing the sealing cover 10 multiple times will be superimposed by the one-way forward component and the one-way retracting component to lengthen the moving distance of the intermediate conductor 11, thereby ensuring the stability of the switching.

[0071] Example 2

[0072] The difference between Example 2 and Example 1 is that Fig.11 As shown, the outer peripheral surface of the driving pipe 15 has an escape groove 158 .

[0073] When the first inclined surface 112 is respectively fitted with the second inclined surface 121, that is, when the intermediate conductor 11 is turned on, the third limit block 31 is located in the limit groove 155, and the fourth limit block 32 is located in the avoidance groove 158. At this time, the sealing cover 10 is pressed again, and the transmission sleeve 18 moves forward a distance relative to the fixed sleeve 17. The reset spring 182 is compressed, and the fourth limit block 32 abuts against the groove wall of the limit groove 155 to limit the advancement of the driving tube 15. In this process, the third guide surface 311 of the third limit block 31 abuts against the notch edge of the limit groove 155, and the third limit block 31 retracts (retraction refers to the third limit block 31 sliding away from the axial direction of the transmission sleeve 18), the third spring 33 is compressed, and the third limit block 31 After the transmission sleeve 18 moves forward into position, the third limit block 31 moves to a state facing the new limit groove 155, and the third spring 33 recovers its deformation and forces the third limit block 31 to slide and insert into the new limit groove 155. At this time, the sealing cover 10 is released and the reset spring 182 is compressed. Since the fourth limit block 32 is located in the avoidance groove 158, the fourth limit block 32 has no limiting effect on the driving tube 15, and only the third limit block 31 has a limiting effect on the driving tube 15. The tension of the reset spring 182 will drive the driving tube 15 to move in the direction toward the sealing cover 10 through the cooperation between the third limit block 31 and the inner wall of the limit groove 155, so that the first inclined surface 112 is more closely fitted to the second inclined surface 121, thereby improving the conduction stability.

[0074] Example 3

[0075] The difference between Example 3 and Example 1 is that Fig.12 As shown, the middle conductor 11 is sleeved with a rubber sleeve 115, so that the middle conductor 11 has a vertical damping sliding characteristic relative to the driving tube 15, and the rubber sleeve 115 is provided with a third annular groove 1151, and the first ring portion 151 of the driving tube 15 is rotatably matched with the third annular groove 1151 to reduce the deflection of the middle conductor 11 affected by the rotation of the driving tube 15.

[0076] Since the intermediate conductor 11 has the characteristic of vertical damping sliding relative to the driving tube 15, the height position of the intermediate conductor 11 can be damped and adjusted. Therefore, when the intermediate conductor 11 retreats to conduct, the height position of the intermediate conductor 11 will be corrected through the cooperation of the first inclined surface 112 and the second inclined surface 121, thereby improving the cooperation accuracy.

[0077] Example 4

[0078] The difference between Example 4 and Example 1 is that Fig.13 As shown, a fixing ring 1002 coaxial with the through hole 1001 is fixed to the outer side of the shell 110, and a plurality of stainless steel sheets 1003 are fixed to the inner diameter of the fixing ring 1002. The stainless steel sheets 1003 are evenly arranged along the circumference of the through hole 1001. The stainless steel sheets 1003 are located in the radial plane of the trigger part 101, and the stainless steel sheets 1003 abut against the outer convex surface of the trigger part 101.

[0079] The stainless steel sheet 1003 abuts against the convex surface of the trigger portion 101 to limit the shape of the trigger portion 101, so that the overall shape of the sealing cover 10 is in a stable state to reduce the occurrence of sealing failure caused by excessive deformation of the sealing cover 10.

[0080] Example 5

[0081] The difference between Example 5 and Example 1 is that Fig.14 , Fig.15 As shown, the first conductor 12 and the second conductor 13 both have a third inclined surface 122 , the second inclined surface 121 is away from the sealing cover 10 , and the third inclined surface 122 faces the sealing cover 10 , that is, the end profiles of the first conductor 12 and the second conductor 13 are trapezoidal.

[0082] Both ends of the intermediate conductor 11 are integrally formed with a wavy section 116 . The wavy section 116 is elastic. A hook portion 117 is integrally formed at the end of the wavy section 116 . The hook portion 117 is V-shaped and has a fourth inclined surface 118 and a first inclined surface 112 .

[0083] When the first conductor 12 and the second conductor 13 need to be connected, the middle conductor 11 retreats, and the end of the hook 117 abuts against the first inclined surface 112. The middle conductor 11 continues to retreat, and the undulating section 116 elastically deforms in a direction away from the sealing cover 10, that is, the distance between the two hooks 117 is shortened, and the hook 117 elastically moves to avoid the second inclined surface 121; the middle conductor 11 continues to retreat (the middle conductor 11 is closer to the sealing cover 10 than the first conductor 12), and the hook 117 passes over the first conductor 12 and the second conductor 13. At this time, the end of the hook 117 abuts against the third inclined surface 122; the middle conductor 11 moves forward The hook portion 117 is moved forward until the intermediate conductor 11 is in the same straight line as the first conductor 12. During this process, the fourth inclined surface 118 of the hook portion 117 gradually fits against the third inclined surface 122, the first inclined surface 112 of the hook portion 117 gradually fits against the second inclined surface 121, and the wavy section 116 gradually shifts to a vertical state. The elastic force of the wavy section 116 will force the hook portion 117 to move away from the intermediate conductor 11, the first inclined surface 112 fits more closely against the second inclined surface 121, and the fourth inclined surface 118 fits more closely against the third inclined surface 122, thereby greatly improving the contact stability between the intermediate conductor 11 and the first conductor 12 and the second conductor 13, respectively.

[0084] In summary, by setting the specific shape of the intermediate conductor 11 and utilizing the long-distance forward and long-distance retreat characteristics of the intermediate conductor 11, the intermediate conductor 11 can move a long distance, so that the hook portion 117 can elastically avoid and elastically fit to the second inclined surface 121 and the third inclined surface 122, and then utilize the process of the wavy section 116 gradually shifting to a vertical state, so that the elastic force of the wavy section 116 forces the hook portion 117 to move away from the intermediate conductor 11, the first inclined surface 112 fits more closely to the second inclined surface 121, and the fourth inclined surface 118 fits more closely to the third inclined surface 122, thereby greatly improving the contact stability of the intermediate conductor 11 with the first conductor 12 and the second conductor 13 respectively.

[0085] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A voltage transformer with a break, characterized in that: The invention comprises a voltage transformer body (100), an inner conductor and a switching mechanism. The voltage transformer body (100) comprises a shell (110), the shell (110) is provided with a through hole (1001), and a sealing cover (10) made of rubber material is fixed in the through hole (1001); the inner conductor comprises a first conductor (12), an intermediate conductor (11) and a second conductor (13), wherein the first conductor (12) and the second conductor (13) are both fixedly arranged in the voltage transformer body (100), the first conductor (12) and the second conductor (13) are located on the same straight line, the intermediate conductor (11) is arranged vertically, both ends of the intermediate conductor (11) are provided with a first inclined surface (112), and the lower end of the first conductor (12) and the upper end of the second conductor (13) are provided with a second inclined surface (121); the switching mechanism is used to drive the intermediate conductor (11) to move horizontally so that the first inclined surface (112) is attached to or detached from the second inclined surface (112). 21); the on-off mechanism comprises a one-way forward component, a one-way retracting component and a switching component, the intermediate conductor (11) is connected to a driving tube (15), the sealing cover (10) is connected to a transmission sleeve (18), and the switching component is used to switch the matching state of the one-way forward component and the one-way retracting component with the driving tube (15) respectively; when the one-way forward component is matched with the driving tube (15), the intermittent pressing force of the sealing cover (10) will be transmitted to the driving tube (15) through the transmission sleeve (18) and the one-way forward component, so as to drive the intermediate conductor (11) to move forward step by step to separate from the first conductor (12) and the second conductor (13); when the one-way retracting component is matched with the driving tube (15), the intermittent pressing force of the sealing cover (10) will be transmitted to the driving tube (15) through the transmission sleeve (18) and the one-way retracting component, so as to drive the intermediate conductor (11) to move backward step by step to contact the first conductor (12) and the second conductor (13).

2. The voltage transformer with a break according to claim 1, characterized in that: The sealing cover (10) comprises, from the middle to the periphery, a trigger portion (101), a conical ring portion (102) and a connecting portion (103), the connecting portion (103) being bonded and fixed to the inner wall of the through hole (1001), the trigger portion (101) being in the shape of a bullet head, the outer convex surface of the trigger portion (101) being located outside the through hole (1001), and the inner concave portion of the trigger portion (101) being connected to the transmission sleeve (18).

3. The voltage transformer with a break according to claim 1, characterized in that: A disc (196) is coaxially fixed to the middle of the sealing cover (10), and the outer periphery of the disc (196) is coaxially rotatably connected to the port of the transmission sleeve (18); a fixing sleeve (17) coaxially arranged with the through hole (1001) is fixed to the inner wall of the housing (110), and a return spring (182) is fixed between the fixing sleeve (17) and the transmission sleeve (18), and the elastic force of the return spring (182) is used to force the transmission sleeve (18) to move in a direction away from the intermediate conductor (11); one end of the driving tube (15) is arranged to rotate relative to the intermediate conductor (11), and the surface of the other end of the driving tube (15) is provided with a plurality of axially spaced limiting grooves (155), and the driving tube (15) ) is provided with a first free-travel groove (156) and a second free-travel groove (157) extending in the axial direction on the outer circumferential surface of the transmission sleeve (18); the first free-travel groove (156) and the second free-travel groove (157) are respectively located on both sides of the limiting groove (155) in the circumferential direction and are connected to the limiting groove (155); the one-way forward component comprises a first limiting block (21), a second limiting block (22), a first spring (23) and a second spring (24); the first limiting block (21) is connected to the transmission sleeve (18) in a radially sliding manner; the first spring (23) is used to drive the first limiting block (21) to slide in a direction close to the axial center of the transmission sleeve (18); one end of the first limiting block (21) is provided with a first guide surface (211); the second limiting block (22) The first guide surface (221) is provided at one end of the second limit block (22), and the first guide surface (211) and the second guide surface (221) are both arranged away from the intermediate conductor (11); the one-way retraction component comprises a third limit block (31), a fourth limit block (32), a third spring (33) and a fourth spring (34); the third limit block (31) is connected to the transmission sleeve (18) in a radially sliding manner, the third limit block (31) is located on one side of the first limit block (21) along the circumference of the transmission sleeve (18), and the third spring (33) is used to drive the second limit block (22) to slide along the axial direction of the fixed sleeve (17); a second ... arranged away from the intermediate conductor (11); The movable third limit block (31) slides along the axial direction close to the transmission sleeve (18), a third guide surface (311) is provided at one end of the third limit block (31), the fourth limit block (32) is radially slidably connected to the fixed sleeve (17), the fourth limit block (32) is located on one side of the second limit block (22) along the circumference of the fixed sleeve (17), the fourth spring (34) is used to drive the fourth limit block (32) to slide along the axial direction close to the fixed sleeve (17), a fourth guide surface (321) is provided at one end of the fourth limit block (32), and the third guide surface (311) and the fourth guide surface (321) are both arranged toward the intermediate conductor (11); the switching component is used to change the rotation angle of the driving tube (15).

4. The voltage transformer with a break according to claim 3, characterized in that: The switching assembly comprises a sleeve (16), a steel ball (161), a fifth spring (162) and a fixing rod (19); the sleeve (16) is fixedly connected to the housing (110); the sleeve (16) is sleeved on the driving tube (15); the steel ball (161) is radially slidingly connected to the inner wall of the sleeve (16); the elastic force of the fifth spring (162) drives the steel ball (161) to slide along the axial direction close to the driving tube (15); the outer peripheral surface of the driving tube (15) is provided with a first hole (152) and a second hole (153) extending in the axial direction; one end of the fixing rod (19) is connected to the sealing cover The fixing rod (19) is fixed in the middle, and the other end of the fixing rod (19) extends into the driving tube (15). The fixing rod (19) is fixed with a first sheet (191) arranged along its own radial direction, and the inner wall of the driving tube (15) is fixed with a second sheet (192) and a third sheet (193) arranged along its own radial direction; when the fixing rod (19) rotates forward and reversely, the first sheet (191) thereon abuts against the second sheet (192) or the third sheet (193), so as to drive the driving tube (15) to rotate to a state where the first hole (152) or the second hole (153) thereon is directly opposite to the steel ball (161).

5. The voltage transformer with a break according to claim 1, characterized in that: The end of the driving tube (15) is rotatably connected to a vertically arranged rubber sleeve (115), and the rubber sleeve (115) is sleeved on the intermediate conductor (11).

6. The voltage transformer with a break according to claim 3, characterized in that: The outer peripheral surface of the driving tube (15) is provided with an avoidance groove (158); when the first inclined surface (112) is respectively fitted with the second inclined surface (121), the third limit block (31) is located in the limit groove (155), and the fourth limit block (32) is located in the avoidance groove (158), and the tension of the return spring (182) will drive the driving tube (15) to move in a direction toward the sealing cover (10) through the cooperation between the third limit block (31) and the inner wall of the limit groove (155).

7. The voltage transformer with a break according to claim 1, characterized in that: The first conductor (12) and the second conductor (13) both have a third inclined surface (122), the second inclined surface (121) is away from the sealing cover (10), and the third inclined surface (122) is toward the sealing cover (10); both ends of the intermediate conductor (11) are integrally formed with wavy sections (116), the ends of the wavy sections (116) are integrally formed with hooks (117), and the hooks (117) have a fourth inclined surface (118) and the first inclined surface (112); when the intermediate conductor (11) is retracted, the The end of the hook portion (117) abuts against the first inclined surface (112) and the wavy section (116) elastically deforms in a direction away from the sealing cover (10); when the intermediate conductor (11) moves forward to be in the same straight line as the first conductor (12), the elastic force of the wavy section (116) forces the hook portion (117) to move away from the intermediate conductor (11), the first inclined surface (112) fits against the second inclined surface (121), and the fourth inclined surface (118) fits against the third inclined surface (122).

8. The voltage transformer with a break according to claim 5, characterized in that: A counterweight (111) is provided at the lower part of the intermediate conductor (11).

9. The voltage transformer with a break according to claim 2, characterized in that: A fixing ring (1002) coaxial with the through hole (1001) is fixed on the outer side of the housing (110), and a plurality of stainless steel sheets (1003) are fixed on the inner diameter of the fixing ring (1002). The stainless steel sheets (1003) are located in the radial plane of the trigger portion (101), and the stainless steel sheets (1003) abut against the outer convex surface of the trigger portion (101).

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