CN213874809U

CN213874809U - Transformer oil tank seals test fixture

Info

Publication number: CN213874809U
Application number: CN202023008175.7U
Authority: CN
Inventors: 贺强; 胡明方
Original assignee: Shanghai Electric Group Zhangjiagang Transformer Co Ltd
Current assignee: Shanghai Electric Group Zhangjiagang Transformer Co Ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-08-03
Anticipated expiration: 2030-12-15

Abstract

The utility model provides a sealed test fixture of transformer tank, is including sealed apron, fixed block, eccentric pushing down the component, the top of sealed apron is provided with the fixed block and through a moving member with fixed block sliding connection, the both sides court of fixed block sealed apron direction is provided with a pair of couple that is used for being connected with transformer tank flange hook, eccentric pushing down the component with the central point of fixed block puts to rotate to be connected and its tip with the top of sealed apron is supported and is leaned on the contact, eccentric pushing down the component court the fixed block direction is rotated to support with pushing down and is leaned on sealed apron dorsad the direction of fixed block removes to the gomphosis with transformer tank flange seal. The utility model discloses a sealing washer on the eccentric component that pushes down will seal the apron is laminated with the sealed face of transformer tank flange to keep sealed laminating state under the effect of cam structure, thereby accomplish sealed apron installation operation fast, improve efficiency of software testing.

Description

Transformer oil tank seals test fixture

Technical Field

The utility model relates to a transformer technical field, concretely relates to sealed test fixture of transformer tank.

Background

Transformers are one of the main devices of power plants and substations, and their role in power systems is to transform voltages. After the voltage is boosted by the step-up transformer, the line loss can be reduced, the power transmission economy is improved, and the purpose of long-distance power transmission is achieved.

In the process of using the transformer, oil is needed to be used as an insulating and heat-radiating medium, so that a transformer oil tank is arranged to store the transformer oil with the above functions. In the operation process, the sealing performance inside the transformer oil tank and between the transformer oil tank and the external oil pipe is required to be kept good, otherwise, external gas or other liquid is easily caused to permeate into the transformer oil tank, so that the oxidation of the transformer oil in the transformer oil tank is accelerated, and when the transformer oil is contacted with air, dust in the air can be adsorbed, the quality of the transformer oil is reduced, and the pipeline is easily blocked. Therefore, the tightness test of the transformer oil tank is required before delivery.

Can set up a sealed test apron at the junction fastening of transformer tank and external oil pipe before the leakproofness test of transformer tank for the inside of transformer tank forms a confined space, and the inside of following transformer tank carries out the gas injection in order to test its sealing performance. However, the fastening mode of the bolts and the flange is adopted between the existing sealing test cover plate and the transformer oil tank, a plurality of bolts need to be fastened and installed when the sealing test cover plate is installed, the bolts need to be disassembled after the test is completed, a large amount of time is consumed in the installation and disassembly operation of the sealing test cover plate in the whole test process, and the high efficiency requirement of quick sealing and quick testing cannot be met.

Disclosure of Invention

In view of this, the utility model provides a sealed test fixture of transformer tank to adopt the sealed operation of bolt-up sealed test apron among the replacement prior art.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a sealed test fixture of transformer tank, is including sealed apron, fixed block, eccentric pushing down the component, the top of sealed apron is provided with the fixed block and through a moving member with fixed block sliding connection, the both sides court of fixed block sealed apron direction is provided with a pair of couple that is used for being connected with transformer tank flange hook, eccentric pushing down the component with the central point of fixed block puts to rotate to be connected and its tip with the top of sealed apron is supported and is leaned on the contact, eccentric pushing down the component rotate with pushing down to lean on sealed apron dorsad the direction of fixed block remove to with the sealed gomphosis of transformer tank flange.

Preferably, the moving member includes a moving passage and a shoulder bolt, the moving passage is disposed inside the fixed block and corresponds to the sealing cover plate, and the shoulder bolt is disposed in the moving passage and has an end portion thereof in threaded connection with the top of the sealing cover plate.

Preferably, the moving channel is divided into a moving section and a penetrating section according to the moving direction of the shoulder bolt, the moving section and the penetrating section are in an inverted convex shape, the shoulder part of the shoulder bolt is located in the moving section of the moving channel, the screw part of the shoulder bolt is located in the penetrating section of the moving channel, and the length of the shoulder bolt is greater than that of the moving channel.

Preferably, the eccentric pressing component comprises a pressing rod, a connecting block and a connecting shaft, one end of the connecting block is connected with the center of the fixing block in a rotating mode through the connecting shaft and is in contact with the top of the sealing cover plate in an abutting mode, one end, in contact with the top of the sealing cover plate, of the connecting block is an eccentric arc surface, and the other end of the connecting block is connected with the pressing rod.

Preferably, the length of the moving section of the moving channel is greater than or equal to the outer arc length of the eccentric arc surface.

Preferably, two sides of the fixing block are respectively fixed with a sealing plate through bolts, one end of the sealing plate close to the sealing cover plate is vertically provided with the hook, and the end face of the sealing plate close to the sealing cover plate and the side face of the sealing cover plate back to the fixing block are located on the same plane.

Preferably, a handle is further provided on any one of the closing plates.

Preferably, a sealing ring is embedded on the side surface of the sealing cover plate, which is back to the fixed block, and the sealing ring protrudes out of the sealing cover plate.

Compared with the prior art, the utility model provides a pair of sealed test fixture of transformer tank, this test fixture through the eccentric component that pushes down will seal the sealing washer on the apron and in the laminating of the sealing face body of transformer tank flange to keep sealed laminating state under the effect of cam structure, thereby accomplish sealed apron installation operation fast, improve efficiency of software testing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is the utility model provides a pair of transformer tank seals test fixture's section schematic diagram.

Reference numerals and component parts description referred to in the drawings:

1. sealing the cover plate; 2. a fixed block; 3. a seal ring; 4. a moving channel; 5. a shoulder bolt; 6. a bolt; 7. closing the plate; 8. hooking; 9. a handle; 10. a pressure lever; 11. connecting blocks; 12. and (7) connecting the shafts.

Detailed Description

The technical solution of the present invention will be described clearly and completely through the following detailed description. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the transformer oil tank sealing test tool comprises a sealing cover plate 1, a fixing block 2 and an eccentric pressing component. Different from the prior art, need not to set up a plurality of screw holes that are used for installing fixing bolt on the sealed apron 1 in this embodiment, it only needs to establish the embedding on a side and sets up a sealing washer 3, and this sealing washer 3 part protrusion sets up in sealed apron 1 to its size corresponds with the size of the sealed face of transformer tank flange that needs to detect, guarantees that sealing washer 3 can keep sealed laminating with the sealed face of transformer tank flange and lean on.

The top of the sealing cover plate 1 is provided with a fixed block 2 and is connected with the fixed block 2 in a sliding way through a moving piece. The moving piece comprises a moving channel 4 and a shoulder bolt 5, the moving channel 4 is arranged in the fixed block 2 and corresponds to the sealing cover plate 1, the shoulder bolt 5 is arranged in the moving channel 4, the end of the shoulder bolt is in threaded connection with the top of the sealing cover plate 1, and the length of the shoulder bolt is greater than that of the moving channel 4. The moving channel 4 is divided into a moving section and a penetrating section according to the moving direction of the shaft shoulder bolt 5, the moving section and the penetrating section are in an inverted convex shape, the shaft shoulder part of the shaft shoulder bolt 5 is positioned in the moving section of the moving channel 4, the screw part of the shaft shoulder bolt 5 is positioned in the penetrating section of the moving channel 4, namely, the maximum moving distance of the sealing cover plate 1 is the length of the moving section of the moving channel 4.

The both sides of fixed block 2 are fixed with a shrouding 7 respectively through bolt 6, and two shrouding 7 all are provided with perpendicularly in the one end that is close to sealed apron 1 and are used for the couple 8 of being connected with transformer tank flange hook, and the shrouding 7 is close to the terminal surface of sealed apron 1 and the side that sealed apron 1 dorsad fixed block 2 is located the coplanar, has wherein still set up a handle 9, portable on arbitrary shrouding 7.

The eccentric pressing component is rotatably connected with the center of the fixed block 2, the end of the eccentric pressing component is abutted and contacted with the top of the sealing cover plate 1, and the eccentric pressing component rotates to press the sealing cover plate 1 to move to be in sealing embedding with the transformer oil tank flange in the direction back to the fixed block 2. Specifically, the eccentric component that pushes down includes depression bar 10, connecting block 11 and connecting axle 12, and wherein the one end of connecting block 11 is connected with depression bar 10, and the other end and the central point of fixed block 2 put the department to rotate through connecting axle 12 and be connected and lean on the contact with the top of sealed apron 1, and connecting block 11 is the eccentric arc surface with the one end of 1 top contact of sealed apron, and the length more than or equal to the excircle arc length of eccentric arc surface of the removal section of removal passageway 4.

The specific using process is as follows:

firstly, loosening the bolts 6 on two sides of the fixing block 2, removing the fastening connection between the sealing plate 7 and the fixing block 2, holding the handle 9 to lift the tool and connect the hook 8 on the sealing plate 7 with the side hook of the transformer oil tank flange, meanwhile, abutting the sealing ring 3 on the sealing cover plate 1 against the sealing surface of the transformer oil tank flange for contact, and then screwing the bolts 6 to ensure that the sealing plate 7 and the fixing block 2 are kept in fastening connection and the hook 8 and the side hook of the transformer oil tank flange are kept.

And then, the pressure lever 10 is pulled upwards and drives the connecting block 11 to rotate, so that the eccentric arc surface at the end part of the connecting block 11 downwards supports and presses the sealing cover plate 1, the sealing cover plate 1 moves towards the direction of the transformer oil tank flange in the moving channel 4 of the fixing block 2 through the shaft shoulder bolt 5, and the sealing ring 3 on the sealing cover plate 1 is attached to the sealing surface of the transformer oil tank flange, so that the sealing cover plate 1 is tightly pressed with the sealing surface of the transformer oil tank flange, and the sealing is sealed without leakage.

After the completion test, only need push down depression bar 10 and drive connecting block 11 and rotate for the eccentric arc surface of connecting block 11 tip department loosens the support of sealing cover plate 1 and presses, and later with the couple 8 of 2 both sides of fixed block loosen and break away from with the transformer tank flange, can throw off whole frock and transformer tank flange, whole process high efficiency.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a sealed test fixture of transformer tank which characterized in that: including sealed apron, fixed block, eccentric pushing component, the top of sealed apron is provided with the fixed block and through a moving member with fixed block sliding connection, the both sides court of fixed block sealed apron direction is provided with a pair of couple that is used for being connected with transformer tank flange hook, eccentric pushing component with the central point of fixed block puts to rotate to be connected and its tip with the top of sealed apron is supported and is leaned on the contact, eccentric pushing component rotates to support with pushing down and leans on sealed apron dorsad the direction of fixed block removes to with the sealed gomphosis of transformer tank flange.

2. The transformer oil tank sealing test tool according to claim 1, characterized in that: the moving piece comprises a moving channel and a shoulder bolt, the moving channel is arranged inside the fixed block and corresponds to the sealing cover plate in position, and the shoulder bolt is arranged in the moving channel and is connected with the top of the sealing cover plate in a threaded mode at the end portion of the shoulder bolt.

3. The transformer oil tank sealing test tool according to claim 2, characterized in that: the mobile passage according to shoulder bolt's moving direction divide into the removal section and runs through the section, remove the section with run through both and be the type of falling protruding, shoulder part of shoulder bolt is located mobile passage's removal section, shoulder bolt's screw rod part is located mobile passage's the section that runs through, shoulder bolt's length is greater than mobile passage's length.

4. The transformer oil tank sealing test tool according to claim 3, characterized in that: the eccentric pressing component comprises a pressing rod, a connecting block and a connecting shaft, one end of the connecting block is connected with the center of the fixing block in a rotating mode through the connecting shaft, the connecting shaft is abutted to the top of the sealing cover plate, one end of the connecting block, which is in contact with the top of the sealing cover plate, is an eccentric arc surface, and the other end of the connecting block is connected with the pressing rod.

5. The transformer oil tank sealing test tool according to claim 4, characterized in that: the length of the moving section of the moving channel is more than or equal to the excircle arc length of the eccentric arc surface.

6. The transformer oil tank sealing test tool according to claim 1, characterized in that: the both sides of fixed block are fixed with a shrouding respectively through the bolt, the shrouding is close to the one end of sealed apron is provided with perpendicularly the couple, the shrouding is close to the terminal surface of sealed apron with sealed apron dorsad the side of fixed block is located the coplanar.

7. The transformer oil tank sealing test tool according to claim 6, characterized in that: and a handle is also arranged on any one of the sealing plates.

8. The seal testing tool for the transformer oil tank according to any one of claims 1 to 7, characterized in that: the side face, back to the fixed block, of the sealing cover plate is embedded with a sealing ring, and the sealing ring protrudes out of the sealing cover plate.