CN116130204A - High-voltage bushing end screen grounding device - Google Patents

Abstract

The invention discloses a high-voltage bushing end screen grounding device, which comprises an adjusting component arranged in a containing box, wherein the adjusting component comprises: the first sliding seat is connected to the bottom of the sliding box and the limit sliding plate is in sliding connection with the accommodating box; the first sliding seat is in sliding connection with the accommodating box, an adjusting chute is formed in the first sliding seat, one side of the limiting sliding plate is fixedly connected with an adjusting rod, and the adjusting rod is in sliding connection with the first sliding seat through the adjusting chute; wherein: the limiting slide plate linkage adjusting rod adjusts the height position of the relative position of the first slide seat through the adjusting chute, and changes the position of the sliding box in the accommodating cavity, so that the grounding conductive plate is reliably contacted and connected with the lead column. By implementing the high-voltage bushing end screen grounding device, the height of the sliding box is effectively adjusted, so that the grounding conducting plate is in stable and reliable contact with the lead column; the protection and sealing treatment to the inside of the accommodating box are enhanced, and the maintenance are convenient.

Description

A high-voltage bushing end screen grounding device

technical field

The invention relates to the technical field of power transformation equipment, in particular to a grounding device for an end screen of a high-voltage bushing.

Background technique

In the prior art, the terminal screen grounding methods of transformer high-voltage bushings are divided into three types: external type, built-in type and normal grounding type. The external type is that the terminal grounding lead wire passes through the small porcelain sleeve and leads to the external grounding device through the terminal. The terminal is insulated from the ground, and the outside is connected to the grounded base through a grounding metal connection piece or a grounding metal flexible wire, a grounding metal connection device, etc. The built-in type is that the grounding lead wire of the last screen passes through the small porcelain sleeve and is drawn out through the terminal. The post is insulated from the ground, the terminal post is covered with a metal ground cover, the terminal post is connected to the ground cover, and the ground cover is grounded. The connection between the ground cover and the terminal is mainly divided into spring connection and direct contact connection. The normal ground structure is that the grounding lead wire of the last screen passes through the small porcelain sleeve and is drawn out through the terminal. The terminal is insulated from the ground, and the terminal is covered with a spring. The metal sleeve of the device, the metal sleeve is in close contact with the terminal. During operation, the metal grounding sleeve is connected to the grounding metal flange inside the sleeve by the pressure of the internal spring, the last screen is reliably grounded, and the outermost part is protected by a metal sheath cover and sealed against moisture.

In the current grounding of the end screen of the high-voltage bushing of the transformer, the grounding conductive plate and the lead post are prone to unstable contact problems. When the wiring fails, it is not convenient for secondary grounding protection treatment, and the safety cannot be guaranteed.

Contents of the invention

The technical problem to be solved by the present invention is to provide a grounding device for the end screen of the high-voltage bushing, which can effectively adjust the height of the sliding box, make the grounding conductive plate and the lead post stably and reliably contact; enhance the protection and sealing treatment of the inside of the storage box, Easy to repair and maintain.

In order to solve the above technical problems, the present invention provides a grounding device for the end shield of high-voltage bushings, which includes: a base and a storage box installed on the base, the inside of the storage box is slidably connected to a sliding box, and the inside of the sliding box is slidably connected to There is a grounding conductive plate; the interior between the base and the storage box is provided with a connecting post opening, and a lead post is installed in the post opening, and the bottom of the sliding box is provided with a first pass that can be adapted to pass through the lead post. The inside of the lead column is provided with a wire hole, and the inside between the grounding conductive plate and the sliding box is respectively provided with a second hole matching the position of the wire hole, and the wire hole and the second hole pass through the grounding hole. The detection line and the grounding detection line are drawn from the sealed wire outlet on one side of the storage box; it also includes: an adjustment assembly installed inside the storage box, and the adjustment assembly includes: the first sliding seat connected to the bottom of the sliding box and the container. The limit slide plate that keeps sliding connection with the storage box; the first sliding seat is slidingly connected with the storage box, and the inside of the first slide seat is provided with an adjustment chute, one side of the limit slide plate is fixedly connected with an adjustment rod, and the adjustment rod passes through the adjustment slope The slot and the first sliding seat are kept slidingly connected; wherein: the limit slide plate linkage adjustment lever adjusts the relative position and height of the first sliding seat through the adjustment chute, and changes the position of the sliding box in the accommodating cavity so that the grounding conductive plate Reliable contact connection with the lead post.

Wherein, one side of the limit slide plate is rotatably connected with a first adjusting bolt, and the first adjusting bolt is threadedly connected with the accommodating box.

Wherein, guide posts for limiting sliding of the grounding conductive plate are installed symmetrically inside the sliding box, and elastic parts for resisting pressure are sheathed on the outside of the guide posts.

Among them, it also includes: a monitoring component for monitoring the magnitude of the current. The monitoring component includes: a fixed seat installed at the bottom of the storage box, an adjustment plate is slidably connected to the inside of the fixed seat, and a sliding rod is fixedly connected to one side of the adjustment plate. A spring is sheathed on the outer side of the sliding rod; the sliding rod is slidingly connected with the fixed seat, and the end of the sliding rod far away from the adjusting plate is fixedly connected with a top block.

Wherein, a first electromagnet is arranged inside the fixed seat, and a second electromagnet is arranged on one side of the adjusting plate, and the magnetic poles of the second electromagnet and the opposite side of the first electromagnet are consistent.

Wherein, it also includes: a control assembly, the first electromagnet and the second electromagnet are respectively electrically connected with the control assembly.

Wherein, the inner thread on one side of the base is connected with a second adjusting bolt, and one end of the second adjusting bolt is rotatably connected with an end plate, and one side of the end plate is equipped with a tact switch.

Wherein, one side of the end plate is connected with a limit rod, and the limit rod is slidably connected with the base.

Wherein, the top of the storage box is provided with a top cover.

Implementing the high-voltage bushing end screen grounding device of the present invention has the following beneficial effects:

First, the adjustment assembly includes a first sliding seat connected to the bottom of the sliding box and a limit slide plate that is slidably connected with the accommodation box; the first sliding seat is slidingly connected with the accommodation box, and an adjustment ramp is provided inside the first sliding seat One side of the limit slide plate is fixedly connected with an adjustment rod, and the adjustment rod maintains a sliding connection with the first sliding seat through the adjustment chute; wherein: the relative position height of the limit slide plate linkage adjustment rod to the first slide seat through the adjustment chute Adjust the position, and then effectively adjust the height of the sliding box, so that the grounding conductive plate is in reliable contact with the lead post.

Second, when the monitoring component is energized, the magnetic poles of the first electromagnet and the second electromagnet are the same to generate a repulsive force, which can drive the adjustment plate, sliding rod and top block to move, press the spring, and detect the magnitude of the current It will prompt when the current is too small.

Thirdly, the protection and sealing treatment of the inside of the storage box are strengthened, which is convenient for repair and maintenance.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of a grounding device for an end screen of a high-voltage bushing according to an embodiment of the present invention.

Fig. 2 is an enlarged structural schematic diagram of part A shown in Fig. 1 of the high-voltage bushing end screen grounding device according to the embodiment of the present invention.

Fig. 3 is a schematic diagram of the internal structure of the grounding device for the end screen of the high-voltage bushing according to the embodiment of the present invention.

Fig. 4 is a schematic diagram of the external structure of the casing of the moving assembly of the high-voltage bushing end screen grounding device according to the embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in Figures 1-4, it is Embodiment 1 of the grounding device for the end screen of the high-voltage bushing of the present invention.

The grounding device for the end screen of the high-voltage bushing in this embodiment includes: a base 1 and a storage box 2 installed on the base. The inside of the storage box 2 is slidably connected to a sliding box 6, and the inside of the sliding box 6 is slidably connected to a grounding conductive plate 20.

The interior between the base 1 and the storage box 2 is provided with a connected post opening, in which a lead post 4 is installed, and the bottom of the sliding box 6 is provided with a first pass through which the lead post 4 can fit. port 3; the inside of the lead post 4 is provided with a wire hole 5, and the inside between the grounding conductive plate 20 and the sliding box 6 is respectively provided with a second hole 21 matching the position of the wire hole 5, and the wire hole 5 And the second port 21 passes through the grounding detection line 23, and the grounding detection line 23 is drawn out from the sealed wire outlet on one side of the storage box 2.

During specific implementation, a second adjusting bolt 13 is threadedly connected to one side of the base 1 , one end of the second adjusting bolt 13 is rotatably connected to an end plate 11 , and a tact switch 14 is installed on one side of the end plate 11 .

One side of the end plate 11 is connected with a limit rod 12, and the limit rod 12 is slidably connected with the base 1, and the limit rod 12 is slidably connected with the base 1. The position is moved and adjusted, the distance between the contacts is adjusted, and the power is detected. The moving position of the end plate 11 is stabilized by the limit rod 12, which improves the stability of the adjustment.

Further, two insulating clamping blocks 15 are connected symmetrically and slidingly inside the base 1, and one side of the insulating clamping block 15 is provided with a conductive block 16, through which the conductive block 16 is tightly fitted to the tact switch 14, and the grounding detection The wire 23 is electrically connected to the lead post 4, and the grounding process is performed through the lead post 4. At the same time, when the conductive block 16 is bonded, the conductive block 16 is also grounded through the wire, which improves the stability of the grounding. In addition, one side of the insulating clamping block 15 is also fixedly connected with a connecting plate 17, and the connecting plate 17 is slidably connected with the base 1,

Further, the grounding device at the end screen of the high-voltage bushing also includes: an adjustment assembly 7 installed inside the accommodation box 2, and the adjustment assembly 7 includes: a first sliding seat 71 connected to the bottom of the sliding box 6 and held with the accommodation box 2 The limit slide plate 73 of slide connection; The rod 74 is kept slidingly connected with the first sliding seat 71 through the adjustment chute 72;

Wherein: the limit slide plate 73 linkage adjustment lever 74 adjusts the relative position and height position of the first slide seat 71 through the adjustment chute 72, and changes the position of the sliding box 6 in the accommodating cavity 2 so that the grounding conductive plate 20 and the lead post 4 Reliable contact connection.

During implementation, one side of the limit slide plate 73 is rotatably connected with a first adjusting bolt 75, and the first adjust bolt 75 is threadedly connected with the accommodation box 2, and the first adjust bolt 75 drives the limit slide plate 73 to move to adjust the position .

The inside of the sliding box is symmetrically provided with guide pillars 18 for limiting the sliding of the grounding conductive plate 20 , and the outer sides of the guide pillars 18 are provided with resisting elastic members 19 . Wherein: the two guide pillars 18 are symmetrically arranged, the guide pillars 18 are fixedly connected with the sliding box 6, the outer sides of the guide pillars 18 are provided with pressure-resisting elastic members 19, and the inner sides of the wire holes 5 are provided with grounding detection lines 23 for accommodating One side of the box 2 is provided with a sealed wire outlet that cooperates with the grounding detection line 23 , and the interior of the accommodation box 2 is provided with an adjustment assembly 7 , and the sliding box 6 is connected to the adjustment assembly 7 .

During implementation, the adjustment assembly 7 includes a first sliding seat 71, the bottom of the sliding box 6 is fixedly connected with the first sliding seat 71, the first sliding seat 71 is slidably connected with the accommodation box 2, and the inside of the first sliding seat 71 is provided with an adjustment The chute 72 is slidingly connected to the limit slide plate 73 inside the accommodation box 2, and one side of the limit slide plate 73 is fixedly connected with an adjustment rod 74, and the adjustment rod 74 is slidably connected with the first slide seat 71, and the limit slide plate 73 and the adjustment rod 74 moves, and the adjusting rod 74 drives the first sliding seat 71 to adjust the height position through the adjusting chute 72, thereby driving the sliding box 6 to adjust the height through the first sliding seat 71, so as to adapt to the lead posts 4 of different lengths and make the grounding The conductive plate is in stable and reliable contact with the lead post.

Further, the grounding device at the end screen of the high-voltage bushing also includes: a monitoring component 8 for monitoring the magnitude of the current. The monitoring component includes: a fixing seat 81 installed at the bottom of the storage box 2, and an adjusting plate is slidably connected inside the fixing seat 81 85, one side of the adjusting plate 85 is fixedly connected with a sliding rod 82, and the outer side of the sliding rod 82 is sleeved with a spring 84; Block 83.

Preferably, a first electromagnet 86 is provided inside the fixing seat 81 , and a second electromagnet 87 is provided on one side of the adjustment plate 85 , and the magnetic poles of the second electromagnet 87 and the opposite side of the first electromagnet 86 are consistent.

The effect of such setting is: the second electromagnet 87 is the same as the magnetic pole on the opposite side of the first electromagnet 86, the first electromagnet 86 and the second electromagnet 87 are activated, and the opposite magnetic poles are identical to produce a repulsive force, thereby driving the regulating plate 85, slide bar 82 and top block 83 move.

During implementation, the sliding rod 82 and the top block 83 move, the adjustment plate 85 presses against the spring 84, and by adjusting the second adjustment bolt 13, the second adjustment bolt 13 drives the end plate 11 and the light touch switch 14 to adjust the position, and the position is adjusted by the top block. 83 push the light touch switch 14 to carry out continuous power-on prompting.

Preferably, it further includes: a control assembly, the first electromagnet 86 and the second electromagnet 87 are respectively electrically connected to the control assembly. The high-voltage bushing end screen grounding device is centrally controlled and processed through the control component, which improves the safety and work efficiency of the high-voltage bushing end screen grounding device.

Further, the grounding device for the end screen of the high-voltage bushing further includes: a moving assembly 9 installed on one side of the base 1 , and the moving assembly 19 is connected to the connecting plate 17 .

During implementation, the moving assembly 9 includes: a housing 91, the inside of the housing 91 is connected with a gear 94 through a rotating shaft, one side of the housing 91 is provided with a motor 10, the output end of the motor 10 is fixedly connected to the rotating shaft, and the housing 91 There are two linkage plates 93 in internal symmetrical sliding connection, one side of the linkage plate 93 is fixedly connected with a rack 92, the two racks 92 are meshed with the gear 94, the linkage plate 93 is fixedly connected with the connection plate 17, and the connection plate 17 is connected with the The housing 91 is slidably connected, the output end of the motor 10 drives the gear 94 to rotate through the rotating shaft, and the gear 94 drives the linkage plate 93 to move to the middle position through the rack 92 .

The linkage plate 93 drives the connecting plate 17 and the insulating clamping block 15 to move in the middle, and the tact switch 14 is pressed and fitted through the conductive block 16, and the grounding detection line 23 is connected to the lead post 4. Grounding treatment is carried out, and at the same time, when the conductive block 16 is bonded, the conductive block 16 is also grounded through the wire, and the lead post 4 is subjected to three-layer grounding protection treatment, which improves stability.

Preferably, the motor 10 is connected to the control assembly, and the control assembly performs centralized control and processing on the high-voltage bushing end screen grounding device, which improves the safety and work efficiency of the high-voltage bushing end screen grounding device.

Further, the top of the storage box 2 is provided with a top cover 22 through bolts, and the storage box 2 is maintained through the top cover 22, which improves the maintenance efficiency.

When the grounding device for the end screen of the high-voltage bushing in this embodiment is actually implemented, the base 1 and the accommodation box 2 are installed on the outside of the lead post 4, and the first adjusting bolt 75 is rotated, and the first adjusting bolt 75 drives the limit sliding plate 73 Move with the adjusting rod 74, the adjusting rod 74 drives the first sliding seat 71 to adjust the height position through the adjusting chute 72, thereby driving the sliding box 6 to adjust the height through the first sliding seat 71, so as to adapt to different lengths of the lead post 4 .

When the sliding box 6 moves downward, the lead column 4 passes through the first port 3, the lead column 4 pushes the grounding conductive plate 20, the grounding conductive plate 20 presses against the elastic member 19, and the grounding conductive plate 20 and the lead column 4 are connected to each other. Fully contact, carry out grounding treatment through the wire, and then start the motor 10 through the control component, the output end of the motor 10 drives the gear 94 to rotate through the rotating shaft, the gear 94 drives the linkage plate 93 to move to the middle position through the rack 92, and the linkage plate 93 Drive the connecting plate 17 and the insulating clamping block 15 to move in the middle, carry out the pressing and bonding process on the tact switch 14 through the conductive block 16, conduct the electric connection process with the grounding detection line 23 and the lead post 4, and perform the grounding process through the lead post 4, At the same time, when the conductive block 16 is attached, the conductive block 16 is also grounded through the wire, and the lead post 4 is subjected to three-layer grounding protection treatment to prevent grounding problems.

When the grounding detection line 23 is energized, the first electromagnet 86 and the second electromagnet 87 start, and the opposite magnetic poles are the same to generate a repulsive force. By driving the adjustment plate 85, the sliding rod 82 and the top block 83 to move, the adjustment plate 85 presses Moving the spring 84, by adjusting the second adjusting bolt 13, the second adjusting bolt 13 drives the end plate 11 and the tact switch 14 to adjust the position, and pushes the tact switch 14 through the top block 83 to carry out continuous power-on prompting, and the power-on size becomes smaller And when disappearing, the magnetic force of the first electromagnet 86, the second electromagnet 87 becomes smaller, and now the spring 84 drives the adjusting plate 85, the sliding bar 82 and the top block 83 to reset, leaving the light touch switch 14 then prompting to power off.

Implementing the high-voltage bushing end screen grounding device of the present invention has the following beneficial effects:

First, the adjustment assembly includes a first sliding seat connected to the bottom of the sliding box and a limit slide plate that is slidably connected with the accommodation box; the first sliding seat is slidingly connected with the accommodation box, and an adjustment ramp is provided inside the first sliding seat One side of the limit slide plate is fixedly connected with an adjustment rod, and the adjustment rod maintains a sliding connection with the first sliding seat through the adjustment chute; wherein: the relative position height of the limit slide plate linkage adjustment rod to the first slide seat through the adjustment chute Adjust the position, and then effectively adjust the height of the sliding box, so that the grounding conductive plate is in reliable contact with the lead post.

Second, when the monitoring component is energized, the magnetic poles of the first electromagnet and the second electromagnet are the same to generate a repulsive force, which can drive the adjustment plate, sliding rod and top block to move, press the spring, and detect the magnitude of the current It will prompt when the current is too small.

Thirdly, the protection and sealing treatment of the inside of the storage box are strengthened, which is convenient for repair and maintenance.

Claims (9)

1. A high voltage bushing tip screen grounding device, comprising: the device comprises a base and a containing box arranged on the base, wherein the inside of the containing box is connected with a sliding box in a sliding manner, and the inside of the sliding box is connected with a grounding conducting plate in a sliding manner;

a lead column is arranged in the through column opening, and a first through opening capable of passing through the lead column in an adaptive manner is formed in the bottom of the sliding box;

the inside of the lead post is provided with a wire through hole, the inside between the grounding conducting plate and the sliding box is respectively provided with a second port matched with the position of the wire through hole, the wire through hole and the second port penetrate through a grounding detection wire, and the grounding detection wire is led out from a sealing wire outlet at one side of the accommodating box;

further comprises: install the inside adjusting part of holding case, adjusting part includes: the first sliding seat is connected to the bottom of the sliding box and the limiting sliding plate is in sliding connection with the accommodating box;

the first sliding seat is in sliding connection with the accommodating box, an adjusting chute is formed in the first sliding seat, one side of the limiting sliding plate is fixedly connected with an adjusting rod, and the adjusting rod is in sliding connection with the first sliding seat through the adjusting chute;

wherein: the limiting slide plate is linked with the adjusting rod, the relative position and the height of the first slide seat are adjusted through the adjusting chute, and the position of the sliding box in the accommodating cavity is changed, so that the grounding conductive plate is reliably contacted and connected with the lead column.

2. The high voltage bushing tip screen grounding device of claim 1, wherein a first adjusting bolt is rotatably connected to one side of the limiting slide plate and is in threaded connection with the accommodating box.

3. The high-voltage bushing end screen grounding device according to claim 1, wherein guide posts for limiting and sliding the grounding conductive plate are symmetrically arranged in the sliding box, and pressing elastic pieces are sleeved on the outer sides of the guide posts.

4. The high voltage bushing tip screen grounding device of claim 1, further comprising: a monitoring assembly for monitoring a magnitude of a current, the monitoring assembly comprising: the fixing seat is arranged at the bottom of the accommodating box, the adjusting plate is connected inside the fixing seat in a sliding manner, one side of the adjusting plate is fixedly connected with the sliding rod, and the spring is sleeved outside the sliding rod; the sliding rod is in sliding connection with the fixing seat, and one end, far away from the adjusting plate, of the sliding rod is fixedly connected with a jacking block.

5. The high voltage bushing tip screen grounding device of claim 1, wherein a first electromagnet is disposed inside the fixed seat, a second electromagnet is disposed on one side of the adjusting plate, and a magnetic pole of the second electromagnet is kept consistent with a magnetic pole of the opposite side of the first electromagnet.

6. The high voltage bushing tip screen grounding device of claim 5 further comprising a control assembly, said first electromagnet and said second electromagnet being electrically connected to said control assembly, respectively.

7. The high voltage bushing tip screen grounding device of claim 1, wherein a second adjusting bolt is connected to an internal thread on one side of the base, one end of the second adjusting bolt is rotatably connected to an end plate, and a tact switch is installed on one side of the end plate.

8. The high voltage bushing tip screen grounding device of claim 7 wherein a stop lever is connected to one side of said end plate, said stop lever being slidably connected to said base.

9. The high voltage bushing tip screen grounding device of claim 1 wherein a top cover is mounted to the top of said housing.

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