CN116435073A

CN116435073A - Electric shock prevention wet-type transformer

Info

Publication number: CN116435073A
Application number: CN202310684787.7A
Authority: CN
Inventors: 郑耀廷; 边杰; 王绍源
Original assignee: Shanxi Jida Electric Ltd By Share Ltd
Current assignee: Shanxi Jida Electric Ltd By Share Ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2023-07-14
Anticipated expiration: 2043-06-12
Also published as: CN116435073B

Abstract

The utility model relates to an electric shock prevention wet-type transformer, which relates to the technical field of transformers, and comprises a transformer body, wherein a protection mechanism is arranged on the outer side of the transformer body, the protection mechanism comprises a fence and a fence door, the fence is arranged around the transformer body, and the fence door is arranged on the fence; a bolt component is arranged between the guardrail door and the fence, and an unlocking driving piece capable of opening and closing the bolt component is arranged on one side of the bolt component; the transformer body is provided with an electrified detection sensor capable of detecting electrified conditions of the transformer body; the electrified detection sensor is electrically connected with the unlocking driving piece. This application is even through electrified detection sensor and unblanking driving piece electricity, consequently, regard as the condition of opening the guardrail door with electrified detection sensor to the electrified condition of transformer body to under the electrified condition of transformer body, the guardrail door can't open, and then can't be close to the transformer body, has reduced the risk of electric shock.

Description

Electric shock prevention wet-type transformer

Technical Field

The application relates to the technical field of transformers, in particular to an electric shock preventing wet-type transformer.

Background

Wet type transformers, also known as oil immersed transformers, use oil as the primary insulation means of the transformer and rely on oil as the cooling medium, such as oil immersed self-cooling, oil immersed air cooling, oil immersed water cooling, forced oil circulation, etc. The main components of the wet transformer are iron core, winding, oil tank, conservator, breather, explosion-proof pipe (pressure relief valve), radiator, insulating sleeve, tapping switch, gas relay, thermometer and oil purifier.

The oil immersed transformer is a novel high-performance transformer with more reasonable structure and better performance, three core columns of the three-dimensional coiled iron core are arranged in an equilateral triangle three-dimensional way, no air gap exists in a magnetic circuit, the winding is tighter, the lengths of the three magnetic circuits are consistent, the three magnetic circuits are shortest, the cross section area of the core column of the iron core is more similar to a circle, therefore, the performance is further improved, the loss is reduced, the noise is reduced, three items are balanced, and the third harmonic component is reduced.

At present, when the oil immersed transformer is maintained, after the oil immersed transformer is powered off, the oil immersed transformer is often required to be discharged so as to eliminate the electric quantity in the oil immersed transformer, and the situation of electric shock is prevented when a worker maintains the oil immersed transformer.

However, since the oil immersed transformer discharges through the earth wire connected to the oil immersed transformer after the oil immersed transformer is powered off, the time of the earth wire discharging becomes long due to the aging of the earth wire and the like, but a part of workers can wait for a certain time to be safe after considering that the oil immersed transformer is powered off, so that the oil immersed transformer is close to the oil immersed transformer and maintained when the oil immersed transformer is not discharged, the electric shock condition is easy to occur, and the body of the workers is damaged, even the life is endangered.

Disclosure of Invention

The utility model provides a wet-type transformer of protection against electric shock, its purpose can reduce the possibility of electric shock when staff's maintenance wet-type transformer.

The application provides an electric shock prevention wet-type transformer adopts following technical scheme: the utility model provides an electric shock prevention wet-type transformer, includes the transformer body, the transformer body outside is provided with protection machanism, protection machanism includes fence and guardrail door, the fence encircles the transformer body sets up, the guardrail door is installed on the fence;

a bolt component is arranged between the guardrail door and the fence, and an unlocking driving piece capable of opening and closing the bolt component is arranged on one side of the bolt component; the transformer body is provided with an electrified detection sensor capable of detecting electrified conditions of the transformer body; the electrified detection sensor is electrically connected with the unlocking driving piece.

Through adopting above-mentioned technical scheme, this application is through setting up protection machanism in the transformer body outside, protects the transformer body through the fence, separates personnel and transformer body simultaneously, reduces the risk of electrocuting. Meanwhile, a guardrail door is arranged on the fence, so that maintenance personnel and the like can enter the fence, and the bolt component and the unlocking driving piece are matched to realize automatic opening and locking of the guardrail door. Through setting up electrified detection sensor on the transformer body and detecting the electrified condition of transformer body, owing to electrified detection sensor links with unblanking driving piece electricity, consequently can control the unlocking driving piece through electrified detection sensor's testing result to make at the transformer body accomplish at discharging, when uncharged promptly, just can open the guardrail door and be close to the transformer body, consequently reduced the possibility that the maintenance personal electrocuted.

Optionally, the transformer body outside is provided with discharge mechanism, discharge mechanism includes physical buckle and earth connection, physical buckle with transformer body interconnect, earth connection one end with physical buckle interconnect, the other end is used for the ground connection, physical buckle adopts conductive material to make.

Through adopting above-mentioned technical scheme, discharge mechanism's setting, through the setting of physical buckle and earth connection, the shell ground connection of transformer body to can eliminate the local electric charge on the shell of transformer body, reduce the possibility of electric shock.

Optionally, the discharging mechanism further comprises a discharging rod, the discharging rod is made of an insulating material, one end of the discharging rod is connected with the physical buckle, the other end of the discharging rod is connected with a discharging driving piece, and the discharging driving piece can drive the discharging rod to move along a direction close to and far away from the transformer body.

Through adopting above-mentioned technical scheme, the setting of discharging stick can fix the physical buckle, separates the physical buckle with the driving piece that discharges simultaneously, prevents that the physical buckle from being with the electric conductance of transformer body to the driving piece that discharges on. Meanwhile, the discharging driving piece is arranged, so that the discharging rod can be driven to move, the physical buckle and the transformer body can be driven to be connected with each other, and the physical buckle and the transformer body can be driven to be spaced from each other, so that the discharging mechanism can discharge the transformer body when the transformer body needs to be charged and discharged.

Optionally, the grounding wire is connected with a current sensor.

Through adopting above-mentioned technical scheme, whether current sensor's setting can detect the last electric current that has of earth connection to can confirm whether the transformer body still has electric quantity, thereby can improve the detection precision to the electrified condition of transformer body through the setting of current sensor cooperation electrified detection sensor, reduce the probability of electrocuting.

Optionally, a plurality of connection terminals are arranged on the transformer body; the transformer comprises a transformer body, and is characterized in that a physical insulation mechanism is arranged on the outer side of the transformer body and comprises a plurality of conductive clips, wherein the conductive clips are arranged in one-to-one correspondence with the wiring terminals and are in plug-in fit with the corresponding wiring terminals; the conductive clamp is connected with an insulating driving piece which can drive the conductive clamp to move along the direction approaching to or departing from the direction corresponding to the wiring terminal.

Through adopting above-mentioned technical scheme, through the setting of physical insulation mechanism for the external wire of transformer can with electrically conductive clamp interconnect, and through electrically conductive clamp and the binding post grafting cooperation that corresponds, satisfy the wiring requirement of transformer body and external wire. Simultaneously, set up insulating drive piece for conductive clip can be moved towards the direction of keeping away from corresponding binding post, makes binding post and corresponding wire clamp-off, realizes the physical insulation of external wire and transformer body, reduces in maintenance process, and external wire is closed a floodgate suddenly and is brought the possibility of electric shock.

Optionally, the physical insulation mechanism further comprises an isolation box, the isolation box is covered on the transformer body, a plurality of connection terminals are arranged in the isolation box, a plurality of conductive clips are connected with the isolation box, and the insulation driving piece is connected with the isolation box.

Through adopting above-mentioned technical scheme, the setting of isolation box can protect terminal, reduces the influence of environment to terminal and the conductive clamp junction that corresponds simultaneously to improve the stability of terminal and the conductive clamp's that corresponds connection and improve conductive clamp and terminal's life.

Optionally, the conductive clip comprises a clamping box and a conductive plate, one end of the conductive plate is connected with the clamping box, and the clamping box is in plug-in fit with the corresponding wiring terminal; and a plurality of wiring holes are formed in the conducting plate.

Through adopting above-mentioned technical scheme, the setting of conducting clip through the centre gripping box can peg graft the cooperation with the binding post that corresponds, satisfies the connection between conducting clip and the binding post that corresponds. The arrangement of the conductive plate is convenient for the connection between the conductive clip and the external lead through the wiring hole on the conductive plate.

Optionally, a first clamping plate and a second clamping plate are arranged in the clamping box, the first clamping plate and the second clamping plate are arranged opposite to each other, and the first clamping plate and the second clamping plate are both in sliding connection with the inner wall of the clamping box;

a plurality of first clamping springs are arranged between one side, away from the second clamping plate, of the first clamping plate and the inner wall of the corresponding clamping box;

a plurality of second clamping springs are arranged between one side, far away from the first clamping plate, of the second clamping plate and the inner wall of the corresponding clamping box;

when the clamping boxes are in plug-in fit with the corresponding wiring terminals, the wiring terminals are located between the first clamping plates and the second clamping plates.

Through adopting above-mentioned technical scheme, this application is through setting up relative first grip block and second grip block, set up first clamping spring in one side that the second grip block was kept away from to first grip block simultaneously, one side that first grip block was kept away from to the second grip block sets up second clamping spring for after the binding post grafting cooperation of grip box to corresponding, under the combined action of first clamping spring and second clamping spring, first grip block and second grip block contradict each other with the binding post that corresponds, thereby increase the stability that grip box and binding post are connected, and then increase the stability of being connected between conductive clip and the transformer body.

Optionally, the physical insulation mechanism further includes a plurality of auxiliary detection sensors, the plurality of auxiliary detection sensors are arranged in one-to-one correspondence with the conductive clips, and the detection parts of the auxiliary detection sensors are arranged towards the corresponding conductive clips.

Through adopting above-mentioned technical scheme, auxiliary detection sensor's setting can detect whether the conductive clip that corresponds is electrified to can be when maintenance personal maintains, the live condition of real-time detection conductive clip ensures that the wiring wire does not have the closing a floodgate, reduces maintenance personal's electric shock risk.

Optionally, the latch assembly includes a first socket, a second socket and a locking latch, the first socket is mounted on the fence, the second socket is mounted on the protective door, the first socket is mutually communicated with the second socket, and the locking latch is inserted into the first socket and the second socket.

Through adopting above-mentioned technical scheme, through the setting of first socket, second socket and locking bolt, first socket is connected with the fence, and the second socket is connected with the guardrail door to when locking bolt inserts first socket and second socket simultaneously, fence and guardrail door just are locked.

In summary, the present application includes at least one of the following beneficial technical effects:

1. this application is even through electrified detection sensor and unblanking driving piece electricity, consequently, regard as the condition of opening the guardrail door with electrified detection sensor to the electrified condition of transformer body to under the electrified condition of transformer body, the guardrail door can't open, and then can't be close to the transformer body, has reduced the risk of electric shock.

2. The setting of discharge mechanism can discharge the transformer body after the transformer body breaks the floodgate, eliminates the local electric charge on the transformer body shell, reduces the electric shock risk.

3. The setting of physical insulation mechanism can separate outside wire and transformer body when maintaining the transformer, consequently, even in maintenance process, outside wire meets the electricity and also can not cause the damage to maintenance personal to the electric shock risk has been reduced.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a wet transformer in the present application.

Fig. 2 is a schematic view of the overall structure of the latch assembly of the present application.

FIG. 3 is a schematic cross-sectional view of the latch assembly of the present application.

Fig. 4 is a schematic diagram of the overall structure of the wet-type transformer after the physical insulation mechanism is lifted.

Fig. 5 is a schematic view of the overall structure of the discharging mechanism in the present application.

Fig. 6 is a schematic cross-sectional view of a physical buckle of the present application.

Fig. 7 is a schematic view of the overall structure of the conductive clip in the present application.

Fig. 8 is a schematic cross-sectional structure of the conductive clip in the present application.

Fig. 9 is a block diagram of the connections of the controller in the present application.

In the figure, 1, a transformer body; 11. a connection terminal; 2. a protective mechanism; 21. a mounting base; 22. a fence; 23. a guardrail door; 24. a plug pin assembly; 241. a first socket; 242. a second socket; 243. locking the bolt; 244. a sliding hole; 25. an unlocking driving member; 251. a driver; 252. a drive shaft; 26. a locking assembly; 261. a mounting groove; 262. a fixing column is clamped; 263. a return spring; 264. a locking hole; 265. unlocking the column; 3. a live detection sensor; 4. a discharge mechanism; 41. a conductive post; 42. a discharging rod; 43. a physical buckle; 431. a limiting cover; 432. a first clamping column; 433. a second clamping column; 434. a first interference spring; 435. a second interference spring; 436. a relief groove; 437. a first guide surface; 438. a second guide surface; 44. a discharge driving member; 45. a ground wire; 46. a current sensor; 5. a physical insulation mechanism; 51. a conductive clip; 511. a conductive plate; 5111. a wiring hole; 512. a clamping box; 5121. a first clamping plate; 5122. a second clamping plate; 5123. a first clamping spring; 5124. a second clamping spring; 5125. clamping the guide surface; 52. an insulating driving member; 53. an isolation box; 531. an auxiliary detection sensor; 6. and a controller.

Detailed Description

The present application is described in further detail below with reference to fig. 1-9.

Referring to fig. 1, an electric shock preventing wet transformer comprises a transformer body 1, a protection mechanism 2 is arranged on the outer side of the transformer body 1, the protection mechanism 2 comprises a mounting seat 21, a fence 22 and a fence door 23, the mounting seat 21 is made of insulating materials or is paved with insulating pads, the transformer body 1 is arranged on the mounting seat 21, the fence 22 is arranged on the mounting seat 21 and is arranged around the transformer body 1, the fence door 23 is connected with the fence 22 in a rotating mode, and the fence 22 is closed by the fence door 23. Thus, by providing the shielding mechanism 2, the transformer body 1 can be separated from the external environment.

Referring to fig. 1 and 2, a latch assembly 24 is disposed between the barrier door 23 and the barrier 22, the latch assembly 24 includes a first socket 241, a second socket 242, and a locking latch 243, the first socket 241 is mounted on the barrier 22, the second socket 242 is mounted on the barrier door 23, the first socket 241 and the second socket 242 are coaxially disposed, the locking latch 243 is inserted into the first socket 241 and the second socket 242, and the locking latch 243 is slidably connected with the inner wall of the first socket 241 and the inner wall of the second socket 242. Thus, the provision of the latch assembly 24 enables locking of the barrier door 23.

The unlocking driving piece 25 is arranged on the fence 22, the unlocking driving piece 25 comprises a driver 251 and a driving shaft 252, the driver 251 adopts an electric push rod, and the driving shaft 252 is respectively connected with the driver 251 and the locking bolt 243 along the two axial ends of the driving shaft, so that the locking or unlocking of the guardrail door 23 can be realized through the unlocking driving piece 25 by automatically opening or closing the bolt assembly 24.

Referring to fig. 2 and 3, a sliding hole 244 is formed in a side of the locking bolt 243 facing the unlocking driving member 25, a driving shaft 252 is in plug-in fit with the sliding hole 244, and the driving shaft 252 is slidably connected with the inner wall of the sliding hole 244; the clamping assembly 26 is arranged on the driving shaft 252, the clamping assembly 26 comprises a mounting groove 261, the mounting groove 261 is arranged on the outer side wall of the driving shaft 252, the depth direction of the mounting groove 261 is arranged along the radial direction of the driving shaft 252, the clamping column 262 is inserted into the mounting groove 261, the side wall of the clamping column 262 is in sliding connection with the inner wall of the mounting groove 261, a reset spring 263 is arranged between the bottom of the mounting groove 261 and the end face of the clamping column 262, the reset spring 263 is axially arranged along the depth direction of the mounting groove 261, and two ends of the reset spring 263 are respectively connected with the bottom of the mounting groove 261 and the clamping column 262. Therefore, under the action of the return spring 263, the side of the locking post 262 away from the return spring 263 will abut against the inner wall of the sliding hole 244.

The inner wall of the sliding hole 244 is provided with a locking hole 264, the locking hole 264 is arranged along the radial direction of the sliding hole 244, and the locking hole 264 penetrates through the side wall of the sliding hole 244; when the locking bolt 243 rotates relative to the driving shaft 252, the locking hole 264 is communicated with the mounting groove 261, and when the locking hole 264 and the mounting groove 261 are coaxially arranged, the locking column 262 is automatically inserted into the locking hole 264 under the action of the return spring 263, and at this time, the locking column 262 locks the locking bolt and the driving shaft 252 to each other, so that the driving shaft 252 can drive the locking bolt 243 to move synchronously.

Since the unlocking post 265 is inserted into the locking hole 264, the unlocking post 265 is slidably connected to the inner wall of the locking hole 264, after the locking post 262 is inserted into the locking hole 264, the locking post 262 can be pushed out of the locking hole 264 by pushing the unlocking post 265, and at this time, the locking hole 264 is rotated so as not to communicate with the mounting groove 261, and the lock between the lock pin 243 and the drive shaft 252 is released, so that the lock pin 243 can be manually moved in the axial direction of the drive shaft 252.

Referring to fig. 1 and 2, a live detection sensor 3 is provided on a transformer body 1, the live detection sensor 3 is a contact type voltage sensor or a non-contact type voltage sensor, a detection portion of the live detection sensor 3 is provided toward the transformer body 1, and the live detection sensor 3 and an unlocking driving member 25 are electrically connected to each other. Therefore, the electrified condition of the transformer body 1 can be detected through the electrified detection sensor 3, and the opening and closing of the guardrail door 23 are controlled through the detection result, so that maintenance personnel can open the guardrail door 23 to be close to the transformer body 1 when the transformer body 1 is not electrified, and the electric shock risk is reduced.

Referring to fig. 4, a discharging mechanism 4 is further disposed on the outer side of the transformer body 1, the discharging mechanism 4 includes a conductive column 41, the conductive column 41 is connected with the transformer body 1, the conductive column 41 is disposed axially along a horizontal direction, and the conductive column 41 is perpendicular to a side wall of the transformer body 1; the discharging mechanism 4 further comprises a discharging rod 42, one end of the discharging rod 42 is provided with a physical buckle 43, the other end of the discharging rod 42 is connected with a discharging driving piece 44 arranged along the vertical direction, and the discharging driving piece 44 adopts a hydraulic push rod or an electric push rod, so that the discharging rod 42 can be driven to lift along the vertical direction through the arrangement of the discharging driving piece 44; the physical buckle 43 and the conductive column 41 are arranged in a vertically opposite mode, and the physical buckle 43 is made of a conductive material, so that when the discharging rod 42 descends, the physical buckle 43 is matched with the conductive column 41 in a clamping mode, and the discharging rod 42 and the conductive column 41 can be connected with each other through the arrangement of the physical buckle 43. The grounding wire 45 is further arranged on the discharging rod 42, one end of the grounding wire 45 is connected with the physical buckle 43, and the other end of the grounding wire is grounded, so that when the physical buckle 43 is in clamping fit with the conductive column 41, the grounding wire 45 can discharge the transformer body 1 through the conductive column 41, local charge retention on the transformer body 1 is reduced, and the discharge speed of the transformer body 1 is accelerated.

Referring to fig. 1 and 4, a current sensor 46 is further provided on the ground wire 45, and the current sensor 46 and the unlocking driving member 25 are electrically connected to each other. When the transformer body 1 is electrified, current can flow through the grounding wire 45 to realize discharging, so that whether the transformer body 1 is electrified or not can be detected by the arrangement of the current sensor 46, and the accuracy of the detection result of the electrified condition of the transformer body 1 can be improved and the electric shock risk is reduced by matching the detection result of the current sensor 46 with the detection result of the electrified detection sensor 3.

Referring to fig. 5 and 6, the physical buckle 43 includes a limiting cover 431, a first clamping post 432 and a second clamping post 433 are disposed in the limiting cover 431, the first clamping post 432 and the second clamping post 433 are disposed along a vertical direction, the first clamping post 432 and the second clamping post 433 are disposed opposite to each other along a horizontal direction, and the upper ends of the first clamping post 432 and the second clamping post 433 are hinged to each other and are hinged to the inner wall of the limiting cover 431, so that the first clamping post 432 and the second clamping post 433 can be opened and closed in a rotating manner.

A plurality of first abutting springs 434 are arranged between one side, far away from the second clamping column 433, of the first clamping column 432 and the inner wall of the limiting cover 431, a plurality of second abutting springs 435 are arranged between one side, far away from the first clamping column 432, of the second clamping column 433 and the inner wall of the limiting cover 431, and the first abutting springs 434 and the second abutting springs 435 are all arranged along the horizontal direction. Therefore, when the physical buckle 43 moves along the vertical direction, the conductive column 41 can be clamped between the first clamping column 432 and the second clamping column 433, so that the first clamping column 432 and the second clamping column 433 are abutted against the outer wall of the conductive column 41, and meanwhile, under the action of the first abutting spring 434 and the second abutting spring 435, the first clamping column 432 and the second clamping column 433 can be abutted against the conductive column 41, so that the physical buckle 43 can be tightly connected with the wire column, and the conductive function is met.

The opposite sides of the first clamping post 432 and the second clamping post 433 are provided with the abdicating grooves 436, when the first clamping post 432 and the second clamping post 433 are mutually abutted along the horizontal direction, the two abdicating grooves 436 form a through hole for accommodating the conductive post 41, so that the abdicating grooves 436 are provided, and when the physical buckle 43 is clamped with the conductive post 41, the contact connection between the conductive post 41 and the physical buckle 43 can be increased, and the conductive effect is improved.

The first guide surface 437 is arranged at the lower ends of the first clamping column 432 and the second clamping column 433, the first guide surface 437 is obliquely arranged along the vertical direction, and the first guide surface 437 extends along a gap between the first clamping column 432 and the second clamping column 433 from top to bottom. The first guide surface 437 is provided to facilitate insertion of the conductive posts 41 between the first and second clamping posts 432, 433.

The lower inner wall of the abdication groove 436 is provided with a second guiding surface 438, and the second guiding surface 438 extends from top to bottom towards the gap between the first clamping post 432 and the second clamping post 433. The second guide surface 438 is provided to facilitate disengagement of the conductive posts 41 and thus the first and

second posts

432, 433.

Referring to fig. 4, a plurality of connection terminals 11 are provided on an upper side of a transformer body 1; the upper side of the transformer body 1 is provided with a physical insulation mechanism 5, the physical insulation mechanism 5 comprises a plurality of conductive clips 51, the conductive clips 51 are arranged in one-to-one correspondence with the wiring terminals 11, and the conductive clips 51 are in plug-in fit with the wiring terminals 11 along the vertical direction. The insulating driving piece 52 is arranged on the conductive clamp 51 along the vertical direction, the insulating driving piece 52 adopts a hydraulic push rod or an electric push rod, the conductive clamp 51 can be driven to be connected with the corresponding wiring terminal 11 through the arrangement of the insulating driving piece 52, the connection between the transformer body 1 and an external lead is realized, and when the transformer body 1 needs to be discharged, the conductive clamp 51 is lifted up through the insulating driving piece 52 to be disconnected with the corresponding wiring terminal 11, so that the physical insulation is realized.

The physical insulation mechanism 5 further comprises an isolation box 53, the isolation box 53 is covered on the upper side of the transformer body 1, the wiring terminals 11 are arranged inside the isolation box 53, the conductive clamp 51 is fixed on the side wall of the isolation box 53 arranged along the vertical direction, and the insulation driving piece 52 is connected with the isolation box 53. On the one hand, the isolation box 53 can be used as a main body for installing the conductive clamp 51, on the other hand, the isolation box 53 can protect the wiring terminal 11, and meanwhile, the contact with the wiring terminal 11 when the transformer body 1 is not discharged completely can be prevented, so that the possibility of electric shock is reduced.

The isolation box 53 is provided with an auxiliary detection sensor 531, the auxiliary detection sensor 531 is a contact type voltage sensor or a non-contact type voltage sensor, and a detection portion of the auxiliary detection sensor 531 is disposed toward the corresponding conductive clip 51, so that whether the corresponding conductive clip 51 is electrified or not can be detected after the conductive clip 51 is disconnected from the corresponding connection terminal 11.

Referring to fig. 4 and 7, the conductive clip 51 includes a clamping box 512 and a conductive plate 511, the conductive plate 511 is disposed in a longitudinal direction along a vertical direction, a lower end of the conductive plate 511 is connected with the clamping box 512, an upper end of the conductive plate 511 extends to an outer side of the isolation box 53, a plurality of wire connection holes 5111 are formed in the conductive plate 511 in a penetrating manner along a thickness direction of the conductive plate 511, and the wire connection holes 5111 are formed in the outer side of the isolation box 53, so that the conductive clip 51 and the wire connection holes 5111 in the conductive plate 511 are arranged to facilitate wire connection with an external wire.

Referring to fig. 7 and 8, an opening of the clamping box 512 is provided at a lower side of the clamping box 512, and the corresponding connection terminal 11 is inserted into the clamping box 512 in a vertical direction; the clamping box 512 is internally provided with a first clamping plate 5121 and a second clamping plate 5122, the first clamping plate 5121 and the second clamping plate 5122 are oppositely arranged along the horizontal direction, a plurality of first clamping springs 5123 are arranged between one side of the first clamping plate 5121 far away from the second clamping plate 5122 and the inner wall of the corresponding clamping box 512, and a plurality of second clamping springs 5124 are arranged between one side of the second clamping plate 5122 far away from the first clamping plate and the inner wall of the corresponding clamping box 512. Therefore, when the conductive clip 51 moves downward in the vertical direction until the corresponding connection terminal 11 is inserted into the clamping box 512, the connection terminal 11 is connected between the first clamping plate 5121 and the second clamping plate 5122, and under the action of the first clamping spring 5123 and the second clamping spring 5124, the first clamping plate 5121 and the second clamping plate 5122 can be abutted against and clamped with the connection terminal 11, so that the connection stability of the conductive clip 51 and the corresponding connection terminal 11 is improved.

The first and

second clamping plates

5121 and 5122 are provided with clamping guide surfaces 5125 at lower sides thereof, the clamping guide surfaces 5125 are inclined, and the clamping guide surfaces 5125 extend from top to bottom in a direction away from the first and

second clamping plates

5121 and 5122. Accordingly, the clamping guide surface 5125 is provided to facilitate insertion of the corresponding connection terminal 11 between the first clamping plate 5121 and the second clamping plate 5122.

Referring to fig. 9, the wet transformer is further provided with a controller 6, and the electrification detecting sensor 3, the current sensor 46, and the auxiliary detecting sensor 531 are electrically connected to the controller 6, and the unlocking driving member 25, the discharging driving member 44, and the insulating driving member 52 are electrically connected to the controller 6. Thereby enabling automatic operation of the entire apparatus.

The implementation principle of the embodiment of the application is as follows: in a normal use state, the electrified detection sensor 3 detects that the transformer body 1 is electrified, and at the moment, the unlocking driving piece 25 is controlled to lock the guardrail door 23, so that personnel are prohibited from approaching the transformer body 1.

When the transformer body 1 is discharged, the discharge driving piece 44 is started, the physical buckle 43 on the discharge rod 42 is clamped with the conductive column 41, and the discharge of the transformer body 1 can be accelerated through the grounding wire 45 connected with the physical buckle 43; at the same time, the current sensor 46 detects the current on the ground wire 45 for determining the electrification of the transformer body 1.

When the live detection sensor 3 and the current sensor 46 detect that the transformer body is not live, the barrier door 23 is opened by the unlocking drive 25, and the isolation box 53 is lifted by the insulation drive 52, so that the connection of the external lead wire with the connection terminal 11 is disconnected.

During the maintenance of the transformer body 1, the auxiliary detection sensor 531 detects the electrification condition of the conductive clip 51 in real time, preventing abrupt closing of the external lead of the transformer.

After the detection is completed, after a maintenance person leaves the fence 22 and closes the fence door 23, the unlocking driving piece 25 is driven to lock the fence door 23, then the physical buckle 43 is separated from the conductive post 41 by driving the discharging driving piece 44, the insulating driving piece 52 is started, and the conductive clamp 51 is lowered to be clamped with the corresponding wiring terminal 11. At this time, the transformer is switched on, and the transformer can work normally.

The embodiments of this embodiment are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, in which like parts are denoted by like reference numerals. Therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides an electric shock prevention wet-type transformer, includes transformer body (1), its characterized in that, transformer body (1) outside is provided with protection machanism (2), protection machanism (2) include fence (22) and guardrail door (23), fence (22) set up around transformer body (1), guardrail door (23) are installed on fence (22);

a bolt assembly (24) is arranged between the guardrail door (23) and the fence (22), and an unlocking driving piece (25) capable of opening and closing the bolt assembly (24) is arranged on one side of the bolt assembly (24); the transformer body (1) is provided with a live detection sensor (3) capable of detecting the live condition of the transformer body (1); the electrification detection sensor (3) is electrically connected with the unlocking driving piece (25).

2. An anti-electric shock wet transformer according to claim 1, characterized in that a discharging mechanism (4) is arranged on the outer side of the transformer body (1), the discharging mechanism (4) comprises a physical buckle (43) and a grounding wire (45), the physical buckle (43) is mutually connected with the transformer body (1), one end of the grounding wire (45) is mutually connected with the physical buckle (43), the other end of the grounding wire is used for grounding, and the physical buckle (43) is made of a conductive material.

3. An anti-electric shock wet transformer according to claim 2, characterized in that the discharging mechanism (4) further comprises a discharging rod (42), the discharging rod (42) is made of an insulating material, one end of the discharging rod (42) is connected with the physical buckle (43) mutually, the other end is connected with a discharging driving member (44), and the discharging driving member (44) can drive the discharging rod (42) to move along the direction approaching to and separating from the transformer body (1).

4. An anti-shock wet transformer according to claim 2, characterized in that a current sensor (46) is connected to the ground line (45).

5. An anti-electric shock wet transformer according to claim 1, characterized in that the transformer body (1) is provided with a plurality of connection terminals (11); the transformer comprises a transformer body (1), wherein a physical insulation mechanism (5) is arranged on the outer side of the transformer body (1), the physical insulation mechanism (5) comprises a plurality of conductive clips (51), the conductive clips (51) are arranged in one-to-one correspondence with the wiring terminals (11), and the conductive clips (51) are in plug-in fit with the corresponding wiring terminals (11);

the conductive clamp (51) is connected with an insulating driving piece (52) which can drive the conductive clamp (51) to move along the direction of approaching or separating from the corresponding wiring terminal (11).

6. The wet transformer according to claim 5, wherein the physical insulation mechanism (5) further comprises an isolation box (53), the isolation box (53) is covered on the transformer body (1) and a plurality of connection terminals (11) are all arranged in the isolation box (53), a plurality of conductive clips (51) are connected with the isolation box (53), and the insulation driving piece (52) is connected with the isolation box (53).

7. An anti-electric shock wet transformer according to claim 5, wherein the conductive clip (51) comprises a clamping box (512) and a conductive plate (511), one end of the conductive plate (511) is connected with the clamping box (512), and the clamping box (512) is in plug-in fit with the corresponding connecting terminal (11); a plurality of wiring holes (5111) are formed in the conducting plate (511).

8. The wet transformer according to claim 7, wherein a first clamping plate (5121) and a second clamping plate (5122) are disposed in the clamping box (512), the first clamping plate (5121) and the second clamping plate (5122) are disposed opposite to each other, and the first clamping plate (5121) and the second clamping plate (5122) are slidably connected to the inner wall of the clamping box (512);

a plurality of first clamping springs (5123) are arranged between one side, far away from the second clamping plate (5122), of the first clamping plate (5121) and the inner wall of the corresponding clamping box (512);

a plurality of second clamping springs (5124) are arranged between one side, far away from the first clamping plate (5121), of the second clamping plate (5122) and the inner wall of the corresponding clamping box (512);

when the clamping boxes (512) are in plug-in fit with the corresponding wiring terminals (11), the wiring terminals (11) are located between the first clamping plate (5121) and the second clamping plate (5122).

9. The wet transformer according to claim 5, wherein the physical insulation mechanism (5) further comprises a plurality of auxiliary detection sensors (531), the plurality of auxiliary detection sensors (531) are arranged in one-to-one correspondence with the conductive clips (51), and the detection portions of the auxiliary detection sensors (531) are arranged toward the corresponding conductive clips (51).

10. The wet transformer according to claim 1, wherein the plug pin assembly (24) comprises a first socket (241), a second socket (242) and a locking plug pin (243), the first socket (241) is mounted on the fence (22), the second socket (242) is mounted on the fence door (23), the first socket (241) and the second socket (242) are communicated with each other, and the locking plug pin (243) is inserted into the first socket (241) and the second socket (242).