CN115148473A

CN115148473A - Insulating cylinder type test transformer

Info

Publication number: CN115148473A
Application number: CN202211076139.5A
Authority: CN
Inventors: 刘志刚; 肖刚; 杨震宇; 汪龙坤
Original assignee: Jiangsu Tengyan Electric Co ltd
Current assignee: Jiangsu Tengyan Electric Co ltd
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2022-10-04
Anticipated expiration: 2042-09-05
Also published as: CN115148473B

Abstract

The invention relates to the technical field of test transformers, in particular to an insulating cylinder type test transformer, which comprises a transformation mechanism, a transmission mechanism and a heat release mechanism, wherein the transformation mechanism comprises a transformation cabinet arranged on the ground and a plurality of binding posts arranged at the top of the transformation cabinet. But at the universal driving shaft of the inside cavity recess internalization assembly free rotation absorption hot gas flow of two insulation covers, the auxiliary shaft, main shaft and be used for driven cross chain and track, the recess centre gripping of seting up as two adjacent insulation cover inboards is in the both sides of terminal, and when carrying out all-round exhaust treatment to the terminal is whole, receive the horizontal pressure boost effect of the inboard T font slider in slider top and pressure spring under, the insulation cover that carries out symmetric distribution along the terminal both sides can form inclosed benign accuse temperature circulation structure, thereby can make and avoid taking place the high temperature phenomenon because of under the continuous current state between terminal on the current experiment transformer and the binding post.

Description

Insulating cylinder type test transformer

Technical Field

The invention relates to the technical field of test transformers, in particular to an insulating cylinder type test transformer.

Background

The test transformer is a basic test device used by vast users of power plants, power supply offices, scientific research institutions and the like for alternating current voltage withstand test, is formed by laminating high-quality cold-rolled oriented silicon steel sheets, adopts steel as a clamping piece in a fastening mode, adopts a cylindrical multilayer tower type high-voltage coil, and is formed by winding high-quality polyester enameled wires and high-voltage-withstand-value insulating materials.

At present, the experiment transformer receives the influence that high tension current lasts the monitoring when the operational data of inspection electrical equipment, can take place the phenomenon that lasts the intensification between a plurality of terminals on the transformer and the binding post, in case the high temperature that produces between binding post of circuit outer end and the binding post is too high, leads to producing the problem of oxidation welding between binding post and the binding post easily, can cause very big interference to the detection of follow-up electrical equipment.

According to the above, how to solve the problem that the subsequent equipment detection is failed due to the high-temperature oxidation welding between the binding post and the cable binding post on the experimental transformer is the technical difficulty to be solved by the invention.

Disclosure of Invention

The present invention is directed to solving one of the technical problems of the prior art or the related art.

Therefore, the technical scheme adopted by the invention is as follows:

the utility model provides an insulating cylinder test transformer, includes transformation mechanism, drive mechanism and heat release mechanism, transformation mechanism is including putting the potential transformer quick-witted case of ground, installing a plurality of terminals at potential transformer machine roof portion, first picture peg and the second picture peg of movable mounting in the inside rectangular slotted hole of potential transformer machine case, drive mechanism is including laminating in the setting element in the potential transformer machine case outside, the internal pressure boost screw of threaded connection at the setting element, the mounting of assembly in a setting element bottom, be located inboard servo motor of mounting, movable mounting at the transmission axostylus axostyle of setting element inner chamber middle part, engage in a plurality of vertical chains on the transmission axostylus axostyle and install the outside slider at the setting element through fixation nut, heat release mechanism includes movable mounting at the insulating aircraft bonnet on the slider, movable mounting slide in insulating aircraft bonnet one end spout, connect the pressure spring on insulating aircraft bonnet one end spout inner wall, install the pull rod of a plurality of insulating aircraft bonnet outer ends, movable mounting on the insulating aircraft bonnet inner wall beam pole, install at the inner cushion of insulating aircraft bonnet and connect the inside exhaust subassembly of insulating aircraft bonnet in the exhaust subassembly of exhaust subassembly including movable mounting at inside linkage shaft, auxiliary shaft and the auxiliary shaft of insulating aircraft bonnet and the main shaft and adjacent between the auxiliary shaft of linkage shaft and main shaft.

The present invention in a preferred example may be further configured to: the inner transverse plates of the first inserting plate and the second inserting plate are U-shaped, and the U-shaped transverse plates penetrate through the rectangular slotted holes in the transformer case.

Through adopting above-mentioned technical scheme, utilize rectangle notch that the inner diaphragm middle part of first picture peg and second picture peg was seted up and the outside adaptation centre gripping of horizontal pole in a plurality of pressure boost screw rods, a plurality of pressure boost screw rods that are the array distribution can be closely centre gripping by first picture peg and second picture peg this moment to can make the stable assembly of setting element in vary voltage quick-witted case outside.

The present invention in a preferred example may be further configured to: the middle part of the positioning piece is provided with a transverse hole which is adaptive to and constrained by the pressurizing screw rod, and two vertical grooves which are used for constraining the vertical chains are formed in the pressurizing screw rod.

By adopting the technical scheme, the threaded end head at the inner end of the pressurizing screw rod penetrates through the transverse hole in the middle of the positioning piece, and the meshing control of the threaded end head at the inner end of the pressurizing screw rod by the limiting nut is combined, so that the effective control of the tightness degree between the positioning piece and the transformer case can be conveniently performed by an operator.

The present invention in a preferred example may be further configured to: the transmission shaft lever is formed by combining a gear, a shaft lever and an I-shaped clamping ring which is uniformly welded on the outer part of the shaft lever, and a plurality of annular gaskets which penetrate through the positioning piece and are uniformly distributed are assembled on the outer part of the shaft lever.

By adopting the technical scheme, the I-shaped clamp rings are uniformly arranged outside the shaft rod, and the vertical chains are jointly driven by the I-shaped clamp rings, so that the plurality of exhaust assemblies distributed in an array can be driven by the plurality of vertical chains at the same rotating speed.

The invention in a preferred example may be further configured to: the bottom threaded connection of slider has fixation nut, T font slider has been seted up to the inboard on slider top, and T font slider adaptation runs through to the spout of insulator bonnet outer end on the slider in.

Through adopting above-mentioned technical scheme, utilize and set up the adaptation at the inboard on slider top and run through the T font slider to in the spout of insulator bonnet outer end to combine being connected of T font slider one side and pressure spring one end, thereby can make adjacent insulator bonnet can be carried out horizontal elastic control by two sliders.

The present invention in a preferred example may be further configured to: hollow recess has been seted up to the inside of insulator bonnet, and has seted up the exhaust notch on the inner wall of the inboard recess of insulator bonnet, the outside parcel of insulator bonnet has insulating silica gel layer.

Through adopting above-mentioned technical scheme, utilize to set up the cavity recess at the middle part of insulator bonnet to set up the notch that is used for dredging the hot gas flow on the inner wall of cavity recess, it is spacing to the outside centre gripping of terminal to combine the recess that insulator bonnet inboard was seted up simultaneously, with this can make the terminal whole obtain comprehensive control by temperature change and adjust.

The invention in a preferred example may be further configured to: the beam rod is composed of a transverse guide rod and a spring connected outside the transverse guide rod, and the inner end of the transverse guide rod penetrates into the insulating hood.

Through adopting above-mentioned technical scheme, utilize to connect the one end of the outside spring of horizontal guide arm on the inner wall of insulator housing, when two adjacent insulator housing atresss shrink and combine two sets of protecting casings, interior pad to face the cable and carry out the centre gripping to can avoid the cable atress excessive cracked damaged problem appearance of appearing.

The invention in a preferred example may be further configured to: the inner pad is made of rubber materials, and the whole inner pad is of a half arc-shaped structure.

Through adopting above-mentioned technical scheme, utilize and adopt soft rubber materials to make with interior pad, utilize a plurality of interior pads of symmetric distribution to the outside pressure boost centre gripping of cable, when increasing cable frictional resistance, can avoid cable external insulation layer pressurized damage again.

The present invention in a preferred example may be further configured to: and turbine blades of the same specification are mounted on the auxiliary shaft and the main shaft.

Through adopting above-mentioned technical scheme, utilize all to install the turbine fan blade that guides the hot gas flow and discharge in auxiliary shaft and main shaft, combine the correspondence of auxiliary shaft and the vertical distribution state of main shaft and binding post top and bottom to this hot gas flow that can make to produce on the binding post can obtain discharging fast.

By adopting the technical scheme, the invention has the beneficial effects that:

1. according to the invention, two insulating machine covers which are symmetrically distributed with each other are arranged according to the type of the binding post on the existing experimental transformer, a linkage shaft, an auxiliary shaft, a main shaft, a transverse chain and a crawler belt which can freely rotate to absorb hot air flow are movably assembled in hollow grooves in the two insulating machine covers, when the grooves formed in the inner sides of the two adjacent insulating machine covers are clamped at the two sides of the binding post and carry out all-around exhaust treatment on the whole binding post, the insulating machine covers which are symmetrically distributed along the two sides of the binding post can form a closed benign temperature control circulation structure under the transverse pressurization action of a T-shaped sliding block and a pressure spring at the inner side of the top end of the sliding block, so that a high-temperature phenomenon caused by continuous current can be avoided between the binding post and the binding post on the existing experimental transformer.

2. According to the invention, two groups of beam rods which are symmetrically distributed along the horizontal direction are respectively arranged on the inner sides of two adjacent insulating machine covers, the protective shell of an arc-shaped structure is arranged at the inner end of each beam rod, the inner pad capable of transversely pressurizing and clamping the outside of the cable is arranged in the arc groove on the inner side of the protective shell, and the wiring terminal connected to the wiring terminal and the cable outside the wiring terminal can be effectively bound and clamped under the double actions of the transverse pressurizing action of the spring outside the beam rods and the pressure spring in the sliding groove on the outer side of the insulating machine cover under the condition that two adjacent insulating machine covers form a relatively closed structure, so that the dangerous accident that the cable is pulled and shaken due to an accident when the experimental transformer is used can be avoided.

3. According to the invention, the rectangular slotted hole is formed in the conventional transformer case, the first inserting plate and the second inserting plate which are used for restraining and positioning the plurality of pressurizing screws distributed in an array are movably arranged in the rectangular slotted hole in the transformer case, and the plurality of pressurizing screws distributed in the array can tightly clamp and fix the transformer case and the plurality of positioning parts under the state that the adjusting limit nut is spirally contracted, so that the plurality of insulating machine covers clamped and restrained at two sides of the binding post can be integrally stable in use.

Drawings

FIG. 1 is a schematic diagram of one embodiment of the present invention;

FIG. 2 is a schematic diagram of a dispersion of one embodiment of the present invention;

FIG. 3 is a partial schematic bottom view of one embodiment of the present invention;

FIG. 4 is a schematic diagram of a dispersion of one embodiment of the present invention;

FIG. 5 is a schematic diagram of the dispersion of FIG. 4 according to one embodiment of the present invention;

FIG. 6 is a schematic partial dispersion view of the embodiment of FIG. 5;

FIG. 7 is a schematic diagram of the internal dispersion of FIG. 6 according to one embodiment of the present invention;

FIG. 8 is a schematic partial dispersion view of the embodiment of FIG. 7;

FIG. 9 is a schematic diagram of the dispersion of FIG. 5 according to an embodiment of the present invention;

FIG. 10 is a schematic view of the internal dispersion of FIG. 9 in accordance with one embodiment of the present invention;

FIG. 11 is a cross-sectional view of FIG. 10 and its internal dispersion according to one embodiment of the present invention.

Reference numerals:

100. a voltage transformation mechanism; 110. transforming the case; 120. a binding post; 130. a first board insert; 140. a second board plug;

200. a transmission mechanism; 210. a positioning member; 220. a pressurizing screw; 230. a limit nut; 240. a fixing member; 250. a servo motor; 260. a drive shaft; 270. vertical chains; 280. a slider;

300. a heat release mechanism; 310. an insulator housing; 320. a slide plate; 330. a pressure spring; 340. a pull rod; 350. a beam; 360. protecting the shell; 370. an inner cushion; 380. an exhaust assembly; 381. a linkage shaft; 382. an auxiliary shaft; 383. a main shaft; 384. a transverse chain; 385. a crawler belt.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

An insulated barrel test transformer provided by some embodiments of the present invention is described below with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1 to 11, the insulation cartridge type testing transformer provided by the present invention includes a transformation mechanism 100, a transmission mechanism 200 and a heat releasing mechanism 300, wherein the transmission mechanism 200 is mounted on the transformation mechanism 100, and the heat releasing mechanism 300 is movably mounted on the transmission mechanism 200.

The transformation mechanism 100 comprises a transformation cabinet 110, a terminal 120, a first plug board 130 and a second plug board 140, the transmission mechanism 200 comprises a positioning member 210, a pressurizing screw 220, a limit nut 230, a fixing member 240, a servo motor 250, a transmission shaft rod 260, a vertical chain 270 and a sliding block 280, the heat release mechanism 300 comprises an insulating hood 310, a sliding plate 320, a compression spring 330, a pull rod 340, a beam rod 350, a protective casing 360, an inner cushion 370 and an exhaust assembly 380, and the exhaust assembly 380 further comprises a linkage shaft 381, an auxiliary shaft 382, a main shaft 383, a transverse chain 384 and a crawler 385.

Specifically, a plurality of terminals 120 are installed at the top of the transformer case 110, a first plug board 130 and a second plug board 140 are movably installed in a rectangular slotted hole inside the transformer case 110, a positioning member 210 is attached to the outside of the transformer case 110, a booster screw 220 is movably installed inside the positioning member 210, a limit nut 230 is screwed at the inner end of the booster screw 220, a fixing member 240 is installed at the bottom of one positioning member 210, a servo motor 250 is located at the inside of the fixing member 240, a transmission shaft 260 is movably installed at the middle of the inner cavity of the positioning member 210, a plurality of vertical chains 270 are engaged with the transmission shaft 260, a sliding block 280 is installed at the outside of the positioning member 210 through a fixing nut, an insulation housing 310 is movably installed on the sliding block 280, a sliding plate 320 is movably installed in a sliding groove at one end of the insulation housing 310, a compression spring 330 is connected to the inner wall of the sliding groove at one end of the insulation housing 310, a pull rod 340 is installed at the outer end of a plurality of insulation housings 310 under a uniform opening angle state, a beam rod 350 is movably installed on the inner wall of the insulation housing 310, a protective housing 360 is installed at the inner end of the insulation housing 310, an inner pad 370 is installed at the inner side of the insulation housing 360, an auxiliary shaft 382, an auxiliary shaft 383 is connected between a linkage shaft 382 and an auxiliary shaft 383 and an auxiliary shaft 382, and an auxiliary shaft 383 of the linkage shaft 382, and an auxiliary shaft 383.

The method comprises the steps that rectangular slotted holes are formed in an existing transformer case 110, two first plugboards 130 and two second plugboards 140 used for restraining and positioning a plurality of pressurizing screws 220 distributed in an array are movably mounted in the rectangular slotted holes in the transformer case 110, under the condition that an adjusting limiting nut 230 is in a spiral shrinkage state, the plurality of pressurizing screws 220 distributed in the array can tightly clamp and fix the transformer case 110 and a plurality of positioning pieces 210, meanwhile, a protective shell 360 of an arc structure is mounted at the inner end of a beam rod 350, an inner pad 370 capable of transversely pressurizing and clamping the outside of a cable is mounted in the arc groove in the inner side of the protective shell 360, under the double effects of transverse pressurizing of a spring outside the beam rod 350 and a pressure spring 330 in a sliding groove outside an insulating hood 310, a wiring terminal connected to the wiring terminal 120 and a cable outside of the wiring terminal can be effectively restrained and clamped under the condition that two adjacent insulating hood 310 form a relatively closed structure, when grooves formed in the inner sides of the two adjacent insulating hood 310 are clamped on two sides of the wiring terminal 120, and when the wiring terminal 120 is subjected to comprehensive exhaust treatment, a T-shaped slider at the top end of the terminal 280 and the transverse pressurizing slider, the terminal 120 and the pressure slider and the cable 120 is symmetrically welded on the two sides of the wiring terminal, the insulating hood, and the cable structure, the two sides of the insulating hood is subjected to the high-temperature control equipment, so that the high-temperature and the high-temperature detection fault of the high-temperature-controlled transformer can be detected, and the high-temperature-controlled-temperature-loop detection equipment.

Example two:

referring to fig. 2, in the first embodiment, the inner end horizontal plates of the first insertion plate 130 and the second insertion plate 140 are U-shaped, and the inner end U-shaped horizontal plates of the first insertion plate 130 and the second insertion plate 140 penetrate through the rectangular slot inside the transformer case 110.

By utilizing the matching clamping between the rectangular notches formed in the middle of the transverse plates at the inner ends of the first inserting plate 130 and the second inserting plate 140 and the outer portions of the transverse rods in the plurality of pressurizing screws 220, the plurality of pressurizing screws 220 distributed in an array form can be tightly clamped by the first inserting plate 130 and the second inserting plate 140, so that the positioning member 210 can be stably assembled outside the transformer case 110.

Example three:

referring to fig. 4-8, on the basis of the first embodiment, the middle portion of the positioning member 210 is provided with a transverse hole adapted to be constrained by the pressure screw 220, and the inside of the pressure screw 220 is provided with two vertical slots for constraining the vertical chain 270, the transmission shaft 260 is formed by combining a gear, a shaft rod and an i-shaped clamping ring uniformly welded outside the shaft rod, and the outside of the shaft rod is provided with a plurality of annular washers which are uniformly distributed and run through the inside of the positioning member 210, the bottom end of the sliding block 280 is connected with a fixing nut through a thread, the inside of the top end of the sliding block 280 is provided with a T-shaped sliding block, and the sliding block 280 is provided with a T-shaped sliding block adapted to run through the sliding slot at the outer end of the insulating hood 310.

The threaded end of the inner end of the pressurizing screw rod 220 penetrates through a transverse hole in the middle of the positioning piece 210, the meshing control of the threaded end of the inner end of the pressurizing screw rod 220 by the limiting nut 230 is combined, the combined transmission of the I-shaped clamping rings to the vertical chains 270 is combined, the purpose of transmission at the same rotating speed can be achieved by the vertical chains 270 through the exhaust assemblies 380 distributed in an array mode, meanwhile, the T-shaped sliding blocks which are matched and penetrate through sliding grooves in the outer end of the insulating hood 310 are arranged on the inner sides of the top ends of the sliding blocks 280, and the connection of one sides of the T-shaped sliding blocks and one end of the pressure spring 330 is combined, so that the adjacent insulating hoods 310 can be elastically controlled transversely by the two sliding blocks 280.

Example four:

referring to fig. 9 to 11, based on the first embodiment, a hollow groove is formed in the insulation hood 310, an exhaust slot is formed in an inner wall of the groove in the insulation hood 310, an insulating silica gel layer is wrapped outside the insulation hood 310, the beam rod 350 is composed of a transverse guide rod and a spring connected outside the transverse guide rod, an inner end of the transverse guide rod penetrates into the insulation hood 310, the inner pad 370 is made of a rubber material, the inner pad 370 is integrally of a half arc structure, and turbine blades of the same specification are mounted on the auxiliary shaft 382 and the main shaft 383.

Utilize and offer the notch that is used for dredging the hot gas flow on the inner wall of cavity recess in the middle part of insulator housing 310, it is spacing to the outside centre gripping of terminal 120 to combine the recess of seting up of insulator housing 310 inboard simultaneously, with this can make terminal 120 whole obtain comprehensive control by temperature change regulation, connect the one end of the outside spring of horizontal guide arm on the inner wall of insulator housing 310 simultaneously, shrink and combine two sets of protective housing 360 when two adjacent insulator housing 310 atress, when interior pad 370 clamps towards the cable, the outside pressure boost centre gripping of cable is filled up to a plurality of interior pads 370 that combine the symmetric distribution, when increasing cable frictional resistance, can avoid cable outside insulating layer compression damage again, combine the vertical distribution state of auxiliary shaft 382 and main shaft 383 and the correspondence of terminal 120 top and bottom, with this can make the hot gas flow that produces on the terminal 120 obtain quick emission.

The working principle and the using process of the invention are as follows: an operator needs to penetrate the Row Won end at the inner end of the pressurizing screw 220 into the transverse hole inside the positioning member 210 in advance, then connect the limit nut 230 to the threaded end at the inner end of the pressurizing screw 220 in a threaded manner, then attach and assemble the positioning member 210 and the pressurizing screw 220 integrally along the outside of the transformer case 110, at this time, the cylindrical protruding end at the outer end of the pressurizing screw 220 will penetrate into the rectangular groove inside the transformer case 110, then horizontally penetrate the thin plates at the inner ends of the first inserting plate 130 and the second inserting plate 140 along the rectangular groove inside the transformer case 110, so that the U-shaped structures of the thin plates at the inner ends of the first inserting plate 130 and the second inserting plate 140 horizontally penetrate along the rod bodies at the outer ends of the pressurizing screws 220, then adjust the plurality of limit nuts 230 to rotate clockwise until the plurality of pressurizing screws 220 are tightened and clamped between the positioning member 210 and the transformer case 110, then the operator needs to control the two pull rods 340 to stretch in the opposite direction along the horizontal direction again, at this time, the two pull rods 340 can respectively control the plurality of symmetrically distributed insulation hoods 310 to expand outwards, at this time, the sliding block 280 installed on the outer side of the positioning member 210 through the fixing nut can perform transverse limiting constraint on the positioning member 210, at this time, the T-shaped protrusion on the inner side of the top end of the sliding block 280 realizes transverse pressurization control on the insulation hoods 310 on the premise of being connected to one end of the pressure spring 330, when the two pull rods 340 control the insulation hoods 310 with the ports expanded in a consistent manner to expand outwards, at this time, two adjacent insulation hoods 310 can perform adaptive clamping on the outside of the binding post 120, at this time, the concave holes formed on the inner sides of two adjacent insulation hoods 310 can perform adaptive clamping on the binding post 120, under the transverse pressurization effect of the pressure spring 330 connected in the outer side sliding grooves of the two adjacent insulation hoods 310 and the T-shaped sliding block 280, two adjacent insulator casing 310 can realize inseparable closed state, operating personnel need start and operate servo motor 250 after that, the transmission gear shaft of servo motor 250 outer end can drive transmission axostylus axostyle 260 mechanical energy high-speed rotation this moment, combine the outside clamp ring of transmission axostylus axostyle 260 to the vertical transmission of a plurality of vertical chains 270, thereby can make a plurality of exhaust subassembly 380 realization joint rotations of array distribution, thereby make turbine fan blade on auxiliary shaft 382 and the main shaft 383 realize the purpose of inwards induced drafting, and then reach the continuation cooling to terminal 120 and outside assembly line.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims

1. An insulation barrel type test transformer is characterized by comprising a transformation mechanism (100), a transmission mechanism (200) and a heat release mechanism (300),

the transformation mechanism (100) comprises a transformation case (110) arranged on the ground, a plurality of binding posts (120) arranged at the top of the transformation case (110), a first plug board (130) and a second plug board (140) which are movably arranged in a rectangular slotted hole in the transformation case (110);

the transmission mechanism (200) is clamped and fixed on the transformation mechanism (100) and comprises a positioning piece (210) attached to the outer side of the transformation case (110), a pressurizing screw rod (220) movably assembled inside the positioning piece (210), a limit nut (230) in threaded connection with the inner end of the pressurizing screw rod (220), a fixing piece (240) assembled at the bottom of one positioning piece (210), a servo motor (250) positioned on the inner side of the fixing piece (240), a transmission shaft rod (260) movably installed in the middle of the inner cavity of the positioning piece (210), a plurality of vertical chains (270) meshed with the transmission shaft rod (260) and a sliding block (280) installed outside the positioning piece (210) through a fixing nut;

the heat release mechanism (300) is arranged on the transmission mechanism (200) and comprises an insulating hood (310) movably arranged on a sliding block (280), a sliding plate (320) movably arranged in a sliding groove at one end of the insulating hood (310), a pressure spring (330) connected to the inner wall of the sliding groove at one end of the insulating hood (310), pull rods (340) arranged at the outer ends of the insulating hoods (310) in a uniform opening angle state, beam rods (350) movably arranged on the inner wall of the insulating hood (310), a protective shell (360) arranged at the inner end of the insulating hood (310), an inner pad (370) arranged on the inner side of the protective shell (360) and an exhaust assembly (380) connected to the inside of the insulating hood (310);

the exhaust assembly (380) comprises a linkage shaft (381), an auxiliary shaft (382) and a main shaft (383) which are movably arranged inside the insulating hood (310), a cross chain (384) connected between the adjacent linkage shaft (381) and the auxiliary shaft (382), and a crawler belt (385) connected between the adjacent auxiliary shaft (382) and the main shaft (383).

2. The insulation barrel test transformer as recited in claim 1, wherein said first and second insertion plates (130, 140) have a U-shaped cross plate at the inner end, and the U-shaped cross plate extends into the rectangular slot inside the transformer housing (110).

3. The insulation barrel type test transformer of claim 1, wherein the middle part of the positioning member (210) is provided with a transverse hole adapted to be constrained to the pressurizing screw (220), and the inside of the pressurizing screw (220) is provided with two vertical slots for constraining the vertical chain (270).

4. The insulation barrel test transformer of claim 1, wherein the transmission shaft (260) is composed of a gear, a shaft and an I-shaped clamp ring uniformly welded on the outside of the shaft, and the outside of the shaft is equipped with a plurality of annular washers uniformly distributed and penetrating into the positioning member (210).

5. The insulation barrel type test transformer according to claim 1, wherein a fixing nut is connected to the bottom end of the sliding block (280) in a threaded manner, a T-shaped sliding block is arranged on the inner side of the top end of the sliding block (280), and the T-shaped sliding block on the sliding block (280) is matched and penetrates into a sliding groove in the outer end of the insulation hood (310).

6. The insulation barrel type test transformer of claim 1, wherein a hollow groove is formed in the insulation hood (310), an exhaust notch is formed in the inner wall of the groove in the inner side of the insulation hood (310), and an insulation silica gel layer wraps the insulation hood (310).

7. The insulation barrel test transformer of claim 1, wherein the beam (350) is composed of a transverse guide rod and a spring connected outside the transverse guide rod, and the inner end of the transverse guide rod penetrates into the interior of the insulation housing (310).

8. The insulation barrel test transformer of claim 1, wherein said inner pad (370) is made of rubber material, and the whole inner pad (370) has a half circular arc structure.