A capacitor-powered deep-fusion column-mounted circuit breaker

Abstract

The present invention relates to the technical field of circuit breakers, and in particular to a capacitor-powered deep-fusion pole-mounted circuit breaker. A capacitor-powered deep-fusion pole-mounted circuit breaker includes multiple power-off mechanisms. Each power-off mechanism includes an outer cover, a fixed terminal, a movable terminal and an adjustment assembly. The adjustment assembly includes an upper conductive plate, a lower conductive plate and two adjustment units. Each adjustment unit includes a contact box. When the movable terminal hits the lower conductive plate, it will bounce in the up and down directions. The elasticity of the contact box cooperates with the movement of the movable terminal so that the lower conductive plate and the movable terminal can always be in contact, so as to reduce the relative movement between the movable terminal and the lower conductive plate, and reduce the number of times the movable terminal is eroded by electric arcs. The present invention provides a capacitor-powered deep-fusion pole-mounted circuit breaker to solve the problem that the movable contacts and fixed contacts of the existing circuit breaker generate a large amount of arcs when in contact, causing damage to the movable contacts and fixed contacts.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a capacitor-powered deep-fusion pole-mounted circuit breaker. Background Art

[0002] A circuit breaker is an automatic electrical appliance that can automatically disconnect the circuit when an abnormal situation such as overload, short circuit or undervoltage occurs in the circuit to protect the circuit and equipment safety. The main function of the circuit breaker is to quickly cut off the current when a circuit fault occurs, prevent the accident from expanding, and ensure the safe operation of the power system. A vacuum circuit breaker is a circuit breaker that breaks and closes the current under a high vacuum state. Its arc extinguishing chamber is a sealed vacuum container with extremely low internal gas pressure, usually less than 10^-4 Torr. During the breaking process, the arc generated by the separation of the contacts is quickly extinguished in a vacuum environment because there is no conductive medium in the vacuum. The capacitor power-taking deep fusion pole-mounted circuit breaker is an advanced power equipment component that combines capacitor power-taking technology and deep fusion technology to realize intelligent control and management of pole-mounted circuit breakers. When the existing circuit breaker is in use, if the vacuum degree in the arc extinguishing chamber decreases, the arc extinguishing chamber loses the arc extinguishing effect. If the conduction circuit between the moving terminal and the fixed terminal at this time, a large number of arcs will be generated, posing a safety hazard.

[0003] For example, the invention patent application with the announcement number CN119028756A provides a vacuum circuit breaker, which connects the circuit by setting movable contacts and fixed contacts. However, when the circuit breaker is closed, because the movable contact will have a power storage component to store power before closing, and then close with the fixed contact in an instant, at the moment of closing, the moving parts will be subjected to a large impact force, causing the parts to deform or be damaged, thereby affecting the mechanical life of the vacuum circuit breaker. When the movable contact of the circuit breaker collides with the fixed contact, due to the reaction force, there is a phenomenon that the movable contact and the fixed contact are pushed apart after contact, and then contact again and are pushed apart again. In a short period of time, the movable contact and the fixed contact are repeatedly burned by the arc, affecting the electrical life of the product. Summary of the invention

[0004] The present invention provides a capacitor-powered deep-fusion column-mounted circuit breaker to solve the problem that a large amount of electric arcs are generated when a movable contact and a fixed contact of an existing circuit breaker come into contact, thereby damaging the movable contact and the fixed contact.

[0005] A capacitor-powered deep-fusion pole-mounted circuit breaker of the present invention adopts the following technical solution: A capacitor-powered deep-fusion pole-mounted circuit breaker includes a mechanism box and a plurality of power-off mechanisms. The plurality of power-off mechanisms are sequentially arranged on the mechanism box along a first direction, and the first direction is a horizontal direction.

[0006] Each power-off mechanism includes an outer cover, a fixed terminal, a movable terminal and an adjustment assembly. The outer cover is fixedly arranged in the mechanism box, and the chamber in the outer cover is the first negative pressure chamber. The fixed terminal and the movable terminal are sequentially distributed from top to bottom. The fixed terminal is arranged in the first negative pressure chamber, and the upper end of the fixed terminal is fixedly connected to the upper end of the outer cover. The movable terminal is slidably arranged in the first negative pressure chamber.

[0007] The adjustment assembly includes an upper conductive plate, a lower conductive plate and two adjustment units. The upper conductive plate is fixedly arranged at the lower end of the fixed terminal. The two adjustment units are distributed in sequence along the second direction, which is a horizontal direction and perpendicular to the first direction. Each adjustment unit includes a contact box, the upper side of the contact box is fixedly connected to the upper conductive plate, and the lower conductive plate is fixedly arranged on the lower side of the contact box. The contact box is elastic, and the chamber in the contact box is a second negative pressure chamber. Each contact box includes a first conductive plate, which is located on the side where the two contact boxes are close to each other. After the two first conductive plates contact each other, the upper conductive plate and the lower conductive plate are connected to each other through the two first conductive plates.

[0008] Furthermore, each contact box further comprises a first insulating plate and two second insulating plates. The first insulating plate and the first conductive plate are sequentially distributed along the second direction, and the first insulating plate is located on the side away from each other of the two contact boxes. The first insulating plate and the first conductive plate are both arc-shaped, and the concave surfaces of the first insulating plate and the first conductive plate are both facing the inside of the contact box. In each adjustment component, the convex surfaces of the two first conductive plates are in contact with each other.

[0009] The two second insulating plates are sequentially distributed along a first direction, the first direction being a horizontal direction. The two sides of the second insulating plate are respectively fixedly connected to the first insulating plate and the first conductive plate. The first insulating plate, the second insulating plate and the first conductive plate are all elastic.

[0010] Furthermore, among the two first conductive plates of each adjustment component, one of the first conductive plates includes a first insulating block and a first conductive sheet. The other first conductive plate includes a second insulating block and a second conductive sheet. The first insulating block and the first conductive sheet are sequentially distributed along a direction from top to bottom, the upper side of the first insulating block is fixedly connected to the upper conductive plate, and the lower side of the first insulating block is fixedly connected to the upper side of the first conductive sheet. The lower side of the first conductive sheet is fixedly connected to the lower conductive plate. The second conductive sheet and the second insulating block are sequentially distributed along a direction from top to bottom. The upper side of the second conductive sheet is fixedly connected to the upper conductive plate, and the lower side of the second conductive sheet is fixedly connected to the upper side of the second insulating block. The lower side of the second insulating block is fixedly connected to the lower conductive plate.

[0011] Furthermore, an insulating rope is fixedly arranged in each contact box, the insulating rope is arranged vertically, and the insulating rope connects the upper conductive plate and the lower conductive plate.

[0012] Furthermore, the adjustment assembly further includes two elastic insulating sheets and two baffles, wherein the two elastic insulating sheets are located between two adjacent first conductive plates and are located on the upper part of the first conductive plates. The two elastic insulating sheets are sequentially distributed along the second direction. Each elastic insulating sheet includes a first part and a second part, and the first part of the elastic insulating sheet is fixedly connected to the first conductive plate.

[0013] The elastic insulating sheet has a first state and a second state. The first state of the elastic insulating sheet is that the elastic insulating sheet is in an arc shape, and the concave surface of the elastic insulating sheet faces upward. The first part and the second part of the elastic insulating sheet are distributed in sequence along the second direction, and the second part of the elastic insulating sheet and the second part of the adjacent elastic insulating sheet are against each other. The second state of the elastic insulating sheet is that the second part of the elastic insulating sheet moves downward to unfold the elastic insulating sheet, and the first part and the second part of the elastic insulating sheet are distributed in sequence from top to bottom, and the second parts of two adjacent elastic insulating sheets no longer contact each other. The baffle is fixedly arranged on the upper conductive plate, and the two baffles are distributed in sequence along the first direction. The baffle is arranged vertically, and the baffle and the elastic insulating sheet in the first state form a storage cavity, and insulating oil is arranged in the storage cavity.

[0014] Furthermore, the power-off mechanism also includes a bellows, which is vertically arranged and sleeved on the outer side of the moving terminal, and the bellows connects the moving terminal and the outer cover.

[0015] Furthermore, a ceramic shell is fixedly arranged inside the outer cover.

[0016] Furthermore, an isolation shell is fixedly arranged inside the ceramic shell, and the adjustment component is arranged inside the isolation shell.

[0017] Furthermore, a fixed end cover plate is fixedly arranged on the fixed terminal, and the fixed end cover plate is located at the upper end of the outer cover.

[0018] Furthermore, a movable lever is arranged in the mechanism box, the movable lever is fixedly connected to the movable terminal, and the movable lever is used to drive the movable terminal to move upward.

[0019] The beneficial effects of the present invention are as follows: a capacitor-powered deep-fusion column-mounted circuit breaker of the present invention, through the provision of fixed terminals, moving terminals and adjustment components, when the moving terminal moves upward quickly and contacts the lower conductive plate, due to the elasticity of the contact box, when the moving terminal hits the lower conductive plate, the contact box will buffer the impact force of the moving terminal, thereby reducing the impact force transmitted to the fixed terminal, reducing the damage to the fixed terminal caused by the impact force, and affecting the service life of the fixed terminal. Also, when the moving terminal hits the lower conductive plate, it will bounce in the up and down directions. Due to the elasticity of the contact box, the contact box will expand and contract in the up and down directions in coordination with the movement of the moving terminal, so that the lower conductive plate and the moving terminal can always be in contact, so as to reduce the relative movement between the moving terminal and the lower conductive plate, and reduce the number of times the moving terminal is eroded by the arc.

[0020] When the movable terminal moves upward, the space in the first negative pressure chamber decreases, and the pressure in the first negative pressure chamber further increases, thereby squeezing the contact box and moving the lower conductive plate downward, thereby accelerating the contact between the movable terminal and the lower conductive plate to reduce the time the movable terminal is eroded by the arc.

[0021] When external gas enters the first negative pressure chamber, the pressure in the first negative pressure chamber increases and the vacuum in the first negative pressure chamber decreases. The increase in pressure in the first negative pressure chamber causes the lower conductive plate to continue to move downward, thereby stretching the first conductive plate, so that the two first conductive plates move away from each other until they are no longer in contact with each other, at which point the upper conductive plate and the lower conductive plate are no longer connected. Afterwards, the circuit cannot be turned on at the moment the moving terminal and the lower conductive plate come into contact, thereby avoiding the generation of an arc. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A schematic diagram of the structure of a capacitor-powered deep-fusion column-mounted circuit breaker provided in an embodiment of the present invention;

[0024] Figure 2 A front view of a capacitor-powered deep-fusion column-mounted circuit breaker provided in an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Sectional view along AA direction;

[0026] Figure 4 A schematic diagram of the structure of a capacitor-powered deep-fusion column-mounted circuit breaker when the moving terminal contacts the lower conductive plate provided by an embodiment of the present invention;

[0027] Figure 5 A schematic structural diagram of an elastic insulating sheet of a capacitor-powered deep-fusion column-mounted circuit breaker in a second state provided by an embodiment of the present invention;

[0028] Figure 6 for Figure 4 The enlarged view of point B in the middle;

[0029] Figure 7 for Figure 5 Enlarged view of point C in the middle;

[0030] Figure 8A schematic structural diagram of a contact box of a capacitor-powered deep-fusion pole-mounted circuit breaker provided in an embodiment of the present invention.

[0031] In the figure: 101, outer cover; 102, fixed terminal; 103, fixed end cover; 104, isolation shell; 105, movable terminal; 106, bellows; 107, upper conductive plate; 108, lower conductive plate; 111, insulating rope; 112, elastic insulating sheet; 113, ceramic shell; 114, baffle; 115, first insulating block; 116, second insulating block; 117, first conductive sheet; 118, second conductive sheet; 120, contact box; 121, first conductive plate; 122, first insulating plate; 123, second insulating plate; 200, mechanism box; 300, first negative pressure chamber; 400, second negative pressure chamber; 500, insulating oil. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Reference Figures 1 to 8 As shown, a capacitor power-taking deep fusion pole-mounted circuit breaker provided by an embodiment of the present invention includes a mechanism box 200 and a plurality of power-off mechanisms. The plurality of power-off mechanisms are sequentially arranged on the mechanism box 200 along a first direction, and the first direction is a horizontal direction.

[0034] Each power-off mechanism includes an outer cover 101, a fixed terminal 102, a movable terminal 105, and an adjustment assembly. The outer cover 101 is fixedly arranged in the mechanism box 200, and the chamber in the outer cover 101 is the first negative pressure chamber 300. The fixed terminal 102 and the movable terminal 105 are distributed in sequence from top to bottom. The fixed terminal 102 is arranged in the first negative pressure chamber 300, and the upper end of the fixed terminal 102 is fixedly connected to the upper end of the outer cover 101. The movable terminal 105 is slidably arranged in the first negative pressure chamber 300.

[0035] The adjustment assembly includes an upper conductive plate 107, a lower conductive plate 108 and two adjustment units. The upper conductive plate 107 is fixedly arranged at the lower end of the fixed terminal 102. The two adjustment units are distributed in sequence along the second direction, which is a horizontal direction and perpendicular to the first direction. Each adjustment unit includes a contact box 120, the upper side of the contact box 120 is fixedly connected to the upper conductive plate 107, and the lower conductive plate 108 is fixedly arranged on the lower side of the contact box 120. The contact box 120 is elastic, and the chamber in the contact box 120 is a second negative pressure chamber 400. Each contact box 120 includes a first conductive plate 121, and the first conductive plate 121 is located on the side where the two contact boxes 120 are close to each other. After the two first conductive plates 121 contact each other, the upper conductive plate 107 and the lower conductive plate 108 are connected to each other through the two first conductive plates 121.

[0036] When the movable terminal 105 moves upward quickly and contacts the lower conductive plate 108, since the contact box 120 is elastic, when the movable terminal 105 hits the lower conductive plate 108, the contact box 120 will buffer the impact force of the movable terminal 105, thereby reducing the impact force transmitted to the fixed terminal 102, reducing the damage to the fixed terminal 102 caused by the impact force, and affecting the service life of the fixed terminal 102. In addition, when the movable terminal 105 hits the lower conductive plate 108, it will bounce in the up and down directions. Since the contact box 120 is elastic, the contact box 120 cooperates with the movement of the movable terminal 105 to expand and contract in the up and down directions, so that the lower conductive plate 108 and the movable terminal 105 can always contact, so as to reduce the relative movement between the movable terminal 105 and the lower conductive plate 108, and reduce the number of times the movable terminal 105 is eroded by the arc.

[0037] When the movable terminal 105 moves upward, the space in the first negative pressure chamber 300 is reduced, and the pressure in the first negative pressure chamber 300 is further increased, thereby squeezing the contact box 120 and moving the lower conductive plate 108 downward, thereby accelerating the contact between the movable terminal 105 and the lower conductive plate 108 to reduce the time the movable terminal 105 is eroded by the arc.

[0038] When the external gas enters the first negative pressure chamber 300, the pressure in the first negative pressure chamber 300 increases, and the vacuum in the first negative pressure chamber 300 decreases. The increase in pressure in the first negative pressure chamber 300 causes the lower conductive plate 108 to continue to move downward, thereby stretching the first conductive plate 121, so that the two first conductive plates 121 move away from each other until they are no longer in contact with each other, and at this time, the upper conductive plate 107 and the lower conductive plate 108 are no longer connected. Afterwards, the circuit cannot be turned on at the moment when the moving terminal 105 and the lower conductive plate 108 come into contact, which can avoid the generation of arcs.

[0039] In this embodiment, each contact box 120 further includes a first insulating plate 122 and two second insulating plates 123. The first insulating plate 122 and the first conductive plate 121 are sequentially distributed along the second direction, and the first insulating plate 122 is located on the side away from each other of the two contact boxes 120. The first insulating plate 122 and the first conductive plate 121 are both arc-shaped, and the concave surfaces of the first insulating plate 122 and the first conductive plate 121 are both facing the inside of the contact box 120. In each adjustment component, the convex surfaces of the two first conductive plates 121 are in contact with each other.

[0040] The two second insulating plates 123 are sequentially distributed along the first direction, which is the horizontal direction. The two sides of the second insulating plate 123 are respectively fixedly connected to the first insulating plate 122 and the first conductive plate 121. The first insulating plate 122, the second insulating plate 123 and the first conductive plate 121 are all elastic.

[0041] Since the first insulating plate 122 and the first conductive plate 121 are both in arc shape, and the concave surfaces of the first insulating plate 122 and the first conductive plate 121 are both facing the inside of the contact box 120, when the pressure in the first negative pressure chamber 300 increases, the first insulating plate 122, the second insulating plate 123 and the first conductive plate 121 are squeezed, so that the lengths of the first insulating plate 122, the second insulating plate 123 and the first conductive plate 121 along the vertical direction increase, thereby causing the lower conductive plate 108 to move downward.

[0042] In this embodiment, one of the two first conductive plates 121 of each adjustment component includes a first insulating block 115 and a first conductive sheet 117. The other first conductive plate 121 includes a second insulating block 116 and a second conductive sheet 118. The first insulating block 115 and the first conductive sheet 117 are sequentially distributed from top to bottom, the upper side of the first insulating block 115 is fixedly connected to the upper conductive plate 107, and the lower side of the first insulating block 115 is fixedly connected to the upper side of the first conductive sheet 117. The lower side of the first conductive sheet 117 is fixedly connected to the lower conductive plate 108. The second conductive sheet 118 and the second insulating block 116 are sequentially distributed from top to bottom. The upper side of the second conductive sheet 118 is fixedly connected to the upper conductive plate 107, and the lower side of the second conductive sheet 118 is fixedly connected to the upper side of the second insulating block 116. The lower side of the second insulating block 116 is fixedly connected to the lower conductive plate 108.

[0043] Due to the arrangement of the first insulating block 115 and the second insulating block 116 , when two adjacent first conductive plates 121 are not in contact, the upper conductive plate 107 and the lower conductive plate 108 are not conducting.

[0044] In this embodiment, an insulating rope 111 is fixedly disposed in each contact box 120. The insulating rope 111 is disposed vertically and connects the upper conductive plate 107 and the lower conductive plate 108. The insulating rope 111 maintains the first insulating plate 122 and the first conductive plate 121 in an arc shape with the concave surfaces facing the inside of the contact box 120.

[0045] In this embodiment, the adjustment assembly further includes two elastic insulating sheets 112 and two baffles 114. The two elastic insulating sheets 112 are located between two adjacent first conductive plates 121 and on the upper part of the first conductive plates 121. The two elastic insulating sheets 112 are sequentially distributed along the second direction. Each elastic insulating sheet 112 includes a first portion and a second portion, and the first portion of the elastic insulating sheet 112 is fixedly connected to the first conductive plate 121.

[0046] The elastic insulating sheet 112 has a first state and a second state. The first state of the elastic insulating sheet 112 is that the elastic insulating sheet 112 is in an arc shape, and the concave surface of the elastic insulating sheet 112 faces upward. The first part and the second part of the elastic insulating sheet 112 are distributed in sequence along the second direction, and the second part of the elastic insulating sheet 112 and the second part of the adjacent elastic insulating sheet 112 are against each other. The second state of the elastic insulating sheet 112 is that the second part of the elastic insulating sheet 112 moves downward to unfold the elastic insulating sheet 112, and the first part and the second part of the elastic insulating sheet 112 are distributed in sequence from top to bottom, and the second parts of two adjacent elastic insulating sheets 112 no longer contact each other.

[0047] The baffle 114 is fixedly disposed on the upper conductive plate 107 , and the two baffles 114 are sequentially distributed along the first direction. The baffle 114 is vertically disposed, and the baffle 114 and the elastic insulating sheet 112 in the first state form a storage cavity, in which insulating oil 500 is disposed.

[0048] When two adjacent first conductive plates 121 are in contact with each other, due to the squeezing of the two first conductive plates 121, the two elastic insulating sheets 112 can contact each other and maintain the first state. When the two adjacent first conductive plates 121 gradually lose contact, the space between the two first conductive plates 121 gradually increases. Since the elastic insulating sheet 112 is elastic, when the two elastic insulating sheets 112 gradually move away from each other, the second part of the elastic insulating sheet 112 gradually moves downward, and the elastic insulating sheet 112 gradually changes from the first state to the second state. The insulating oil 500 flows out of the storage cavity, and the insulating oil 500 flows to the side where the two first conductive plates 121 are in contact with each other, thereby avoiding the generation of an arc when the two first conductive plates 121 lose contact.

[0049] In this embodiment, the power-off mechanism further comprises a bellows 106, which is vertically arranged and sleeved on the outer side of the movable terminal 105, and connects the movable terminal 105 and the outer cover 101. The bellows 106 is used to seal the gap at the sliding contact point between the movable terminal 105 and the outer cover 101.

[0050] In this embodiment, a ceramic shell 113 is fixedly disposed inside the outer cover 101 .

[0051] In this embodiment, the isolation shell 104 is fixedly disposed in the ceramic shell 113 , and the adjustment component is disposed in the isolation shell 104 .

[0052] In this embodiment, a fixed end cover plate 103 is fixedly disposed on the fixed terminal 102 , and the fixed end cover plate 103 is located at the upper end of the outer cover 101 .

[0053] In this embodiment, a movable lever is provided in the mechanism box 200, and the movable lever is fixedly connected to the movable terminal 105, and the movable lever is used to drive the movable terminal 105 to move upward. A pressure gauge is provided on the mechanism box 200, and when the pressure gauge detects that the first negative pressure chamber 300 is deflated, a new capacitor-powered deep fusion column-mounted circuit breaker needs to be replaced.

[0054] Working process: In the initial state, the first negative pressure chamber 300 and the second negative pressure chamber 400 are both in a negative pressure state. The movable terminal 105 is not in contact with the lower conductive plate 108. The elastic insulating sheet 112 is in the first state, the two adjacent first conductive plates 121 are in contact with each other, and the upper conductive plate 107 is connected to the lower conductive plate 108.

[0055] The movable lever is rotated to move the movable terminal 105 upward, and the movable terminal 105 moves upward quickly and contacts the lower conductive plate 108. Since the first insulating plate 122, the second insulating plate 123 and the first conductive plate 121 are all elastic, when the movable terminal 105 hits the lower conductive plate 108, the contact box 120 will buffer the impact force of the movable terminal 105, thereby reducing the impact force transmitted to the fixed terminal 102, reducing the damage to the fixed terminal 102 caused by the impact force, and affecting the service life of the fixed terminal 102.

[0056] Furthermore, when the moving terminal 105 hits the lower conductive plate 108, it will bounce in the up and down directions. Since the contact box 120 is elastic, the contact box 120 expands and contracts in the up and down directions in coordination with the movement of the moving terminal 105, so that the lower conductive plate 108 and the moving terminal 105 can always be in contact, thereby reducing the relative movement between the moving terminal 105 and the lower conductive plate 108 and reducing the number of times the moving terminal 105 is eroded by the arc.

[0057] When the moving terminal 105 moves upward, the space in the first negative pressure chamber 300 decreases, and the pressure in the first negative pressure chamber 300 further increases, thereby squeezing the first insulating plate 122, the second insulating plate 123 and the first conductive plate 121, so that the lengths of the first insulating plate 122, the second insulating plate 123 and the first conductive plate 121 in the vertical direction become larger, and then the lower conductive plate 108 moves downward, thereby accelerating the contact between the moving terminal 105 and the lower conductive plate 108, so as to reduce the time that the moving terminal 105 is eroded by the arc.

[0058] When the external gas enters the first negative pressure chamber 300, the pressure in the first negative pressure chamber 300 increases, and the vacuum in the first negative pressure chamber 300 decreases. If the movable terminal 105 and the lower conductive plate 108 are not in contact at this time, the increase in pressure in the first negative pressure chamber 300 causes the lower conductive plate 108 to continue to move downward, thereby stretching the first conductive plate 121, so that the two first conductive plates 121 move away from each other until they are no longer in contact with each other, and at this time, the upper conductive plate 107 and the lower conductive plate 108 are no longer connected. Afterwards, the circuit cannot be turned on at the moment when the movable terminal 105 and the lower conductive plate 108 are in contact, which can avoid the generation of arcs.

[0059] If the moving terminal 105 and the lower conductive plate 108 are already in contact at this time, when the first conductive plates 121 move away from each other, the two elastic insulating sheets 112 gradually move away until they are no longer in contact, and the elastic insulating sheets 112 change from the first state to the second state, and the insulating oil 500 in the storage chamber flows to the two first conductive plates 121, preventing the first negative pressure chamber 300 from deflation slowly, and arcing occurs when the two first conductive plates 121 are out of contact, which poses a hidden danger. When the pressure gauge detects that the first negative pressure chamber 300 is deflated, a new capacitor-powered deep fusion column-mounted circuit breaker needs to be replaced.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A capacitor-powered deep-fusion column-mounted circuit breaker, characterized in that: It includes a mechanism box and a plurality of power-off mechanisms; the plurality of power-off mechanisms are sequentially arranged on the mechanism box along a first direction, the first direction being a horizontal direction; each power-off mechanism includes an outer cover, a fixed terminal, a movable terminal and an adjustment component; the outer cover is fixedly arranged in the mechanism box, and the chamber in the outer cover is a first negative pressure chamber; the fixed terminal and the movable terminal are sequentially distributed along a direction from top to bottom; the fixed terminal is arranged in the first negative pressure chamber, and the upper end of the fixed terminal is fixedly connected to the upper end of the outer cover; the movable terminal is slidably arranged in the first negative pressure chamber; The adjustment component includes an upper conductive plate, a lower conductive plate and two adjustment units; the upper conductive plate is fixedly arranged at the lower end of the fixed terminal; the two adjustment units are distributed in sequence along the second direction, and the second direction is a horizontal direction and perpendicular to the first direction; each adjustment unit includes a contact box, the upper side of the contact box is fixedly connected to the upper conductive plate, and the lower conductive plate is fixedly arranged on the lower side of the contact box; the contact box is elastic, and the chamber in the contact box is a second negative pressure chamber; each contact box includes a first conductive plate, and the first conductive plate is located on the side where the two contact boxes are close to each other. After the two first conductive plates contact each other, the upper conductive plate and the lower conductive plate are connected to each other through the two first conductive plates.

2. A capacitor-powered deep-fusion column-mounted circuit breaker according to claim 1, characterized in that: Each contact box further includes a first insulating plate and two second insulating plates; the first insulating plate and the first conductive plate are sequentially distributed along the second direction, and the first insulating plate is located on the side of the two contact boxes away from each other; the first insulating plate and the first conductive plate are both arc-shaped, and the concave surfaces of the first insulating plate and the first conductive plate are both facing the inside of the contact box; in each adjustment component, the convex surfaces of the two first conductive plates are in contact with each other; The two second insulating plates are distributed in sequence along a first direction, which is a horizontal direction; the two sides of the second insulating plates are fixedly connected to the first insulating plates and the first conductive plates respectively; the first insulating plates, the second insulating plates and the first conductive plates are all elastic.

3. A capacitor-powered deep-fusion column-mounted circuit breaker according to claim 1, characterized in that: Among the two first conductive plates of each adjustment component, one of the first conductive plates includes a first insulating block and a first conductive sheet; the other first conductive plate includes a second insulating block and a second conductive sheet; the first insulating block and the first conductive sheet are sequentially distributed along a top-to-bottom direction, the upper side of the first insulating block is fixedly connected to the upper conductive plate, and the lower side of the first insulating block is fixedly connected to the upper side of the first conductive sheet; the lower side of the first conductive sheet is fixedly connected to the lower conductive plate; the second conductive sheet and the second insulating block are sequentially distributed along a top-to-bottom direction; the upper side of the second conductive sheet is fixedly connected to the upper conductive plate, and the lower side of the second conductive sheet is fixedly connected to the upper side of the second insulating block; the lower side of the second insulating block is fixedly connected to the lower conductive plate.

4. A capacitor-powered deep-fusion column-mounted circuit breaker according to claim 1, characterized in that: An insulating rope is fixedly arranged in each contact box, the insulating rope is arranged vertically, and the insulating rope connects the upper conductive plate and the lower conductive plate.

5. A capacitor-powered deep-fusion pole-mounted circuit breaker according to claim 1, characterized in that: The adjustment assembly also includes two elastic insulating sheets and two baffles, the two elastic insulating sheets are located between two adjacent first conductive plates and on the upper part of the first conductive plates; the two elastic insulating sheets are sequentially distributed along the second direction; each elastic insulating sheet includes a first part and a second part, and the first part of the elastic insulating sheet is fixedly connected to the first conductive plate; The elastic insulating sheet has a first state and a second state. The first state of the elastic insulating sheet is that the elastic insulating sheet is in an arc shape, and the concave surface of the elastic insulating sheet faces upward; the first part and the second part of the elastic insulating sheet are sequentially distributed along the second direction, and the second part of the elastic insulating sheet and the second part of the adjacent elastic insulating sheet are against each other; the second state of the elastic insulating sheet is that the second part of the elastic insulating sheet moves downward to unfold the elastic insulating sheet, and the first part and the second part of the elastic insulating sheet are sequentially distributed along the direction from top to bottom, and the second parts of two adjacent elastic insulating sheets no longer contact each other; The baffle is fixedly arranged on the upper conductive plate, the two baffles are distributed in sequence along the first direction, the baffles are arranged vertically, the baffles and the elastic insulating sheet in the first state form a storage cavity, and insulating oil is arranged in the storage cavity.

6. A capacitor-powered deep-fusion column-mounted circuit breaker according to claim 1, characterized in that: The power-off mechanism also includes a bellows, which is vertically arranged and sleeved on the outer side of the moving terminal. The bellows connects the moving terminal and the outer cover.

7. A capacitor-powered deep-fusion column-mounted circuit breaker according to claim 1, characterized in that: A ceramic shell is fixedly arranged inside the outer cover.

8. A capacitor-powered deep-fusion column-mounted circuit breaker according to claim 7, characterized in that: An isolation shell is fixedly arranged inside the ceramic shell, and the adjustment component is arranged inside the isolation shell.

9. The capacitor-powered deep-fusion column-mounted circuit breaker according to claim 1 is characterized in that: A fixed end cover plate is fixedly arranged on the fixed terminal, and the fixed end cover plate is located at the upper end of the outer cover.

10. The capacitor-powered deep-fusion column-mounted circuit breaker according to claim 1, characterized in that: A movable lever is arranged in the mechanism box, the movable lever is fixedly connected to the movable terminal, and the movable lever is used to drive the movable terminal to move upward.

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