CN210689974U

CN210689974U - Leakage test device of power transformer oil tank

Info

Publication number: CN210689974U
Application number: CN201922096035.0U
Authority: CN
Inventors: 周新典; 吴峰
Original assignee: Wuhan Feipu General Equipment Co Ltd
Current assignee: Wuhan Feipu General Equipment Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-06-05
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a leakage test device of power transformer oil tank relates to transformer oil tank technical field. The utility model discloses a tank wall, tank wall side welding have the bottom plate, and the bottom plate side runs through the welding and has the leakage testing pipe, and sliding connection has the drive disc between the leakage testing pipe inner wall, a drive disc side fixedly connected with transfer line, transfer line one end fixedly connected with cover plate, a plurality of spacing springs of the even fixedly connected with in bottom plate side, spacing spring one end and cover plate side fixed connection, annular seal groove has been seted up to the cover plate side, and annular seal groove inner wall cooperatees with the port that the leakage testing pipe is located the tank wall inboard. The utility model discloses a design of leakage testing pipe, driving disc, transfer line, capping disc, spacing spring, ring seal groove and intake pipe can the self-sealing live leakage testing pipe, and simple structure has avoided the hole of current air malleation leakage testing to seal up extravagant material and artificial problem with capping and sealing washer or joint strip.

Description

Leakage test device of power transformer oil tank

Technical Field

The utility model belongs to the technical field of the transformer tank, especially, relate to a leakage test device of power transformer tank.

Background

In the power industry, a transformer oil tank is a welded structural part, and the welding seam of the transformer oil tank is complex in shape and large in length. The transformer oil tank is internally filled with transformer oil when in use, so that the leakage weak point of the transformer oil tank is completely eliminated after the welding of a product is finished, and the welding quality of the transformer oil tank is ensured, so that the transformer can safely and reliably operate.

Currently, products on the market generally adopt positive air pressure or water injection pressurization for leakage test. The air positive pressure leakage test has the following defects: all holes must be sealed by adding a sealing cover and a sealing ring or a sealing rubber strip, which wastes materials and labor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a leakage test device of power transformer oil tank, through the design of examination leak hunting pipe, driving disc, transfer line, capping disc, spacing spring, ring seal groove and intake pipe, the hole of having solved current air malleation leak hunting must seal up with closing cap and sealing washer or joint strip, extravagant material and artificial problem.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a leakage test device of a power transformer oil tank, which comprises a tank wall; the welding of tank wall side has the bottom plate, the welding has the leakage test pipe to the bottom plate side, sliding connection has the drive disc between the leakage test inside pipe wall, a drive disc side fixedly connected with transfer line, transfer line one end fixedly connected with cover plate, the cover plate is located one side of leakage test pipe port, the even a plurality of spacing springs of fixedly connected with in bottom plate side, spacing spring one end and cover plate side fixed connection, annular seal groove has been seted up to the cover plate side, annular seal groove inner wall cooperatees with the port that the leakage test pipe is located the tank wall inboard.

Furthermore, the inner wall of the port of the leakage testing pipe, which is positioned on the outer side of the box wall, is in threaded connection with an air inlet pipe, one end of the air inlet pipe is in contact with the side face of the transmission disc, and a plurality of through holes are uniformly formed in the side face of the transmission disc.

Furthermore, a pressure gauge is fixedly mounted on the peripheral side face of the air inlet pipe and located on one side of the port of the leakage test pipe.

Furthermore, the diameter of the cross section circle of the cover disc is larger than that of the cross section circle of the leakage test tube, the range is 4cm-6cm, and one end of the transmission rod is located in the middle of the side face of the cover disc.

Further, the inner wall of the annular sealing groove is fixedly connected with a sealing rubber pad.

The utility model discloses following beneficial effect has:

the utility model adopts the design of the leakage testing pipe, the transmission disc, the transmission rod, the cover disc, the limiting spring, the annular sealing groove and the air inlet pipe, threads at one end of the air inlet pipe enter the leakage testing pipe to enable one end of the air inlet pipe to contact and drive the transmission disc to slide along the inner wall of the leakage testing pipe, the transmission disc drives the cover disc to move horizontally through the transmission rod to enable the annular sealing groove on the cover disc to be separated from the port of the leakage testing pipe, then the air is filled into the oil tank through the air inlet pipe, the tightness of the oil tank is judged according to the indication number of the pressure gauge, then the air inlet pipe is screwed out by hand to the external thread, the cover disc moves to the original position under the pulling force of the limiting spring, the annular sealing groove on the cover disc blocks the port of the leakage test pipe again, the leakage testing pipe is automatically sealed, the structure is simple, and the problems that a sealing cover and a sealing ring or a sealing rubber strip are required to be added to seal a hole of the existing air positive pressure leakage testing pipe, so that materials and labor are wasted are solved.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

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

FIG. 1 is a schematic structural diagram of a leakage testing device for an oil tank of a power transformer;

FIG. 2 is a schematic diagram of the left view of FIG. 1;

FIG. 3 is a front view of the structure of FIG. 1;

FIG. 4 is a schematic view of the interior of the leak testing tube;

in the drawings, the components represented by the respective reference numerals are listed below:

1-box wall, 101-bottom plate, 102-leakage testing pipe, 103-transmission disc, 104-transmission rod, 105-cover disc, 106-limit spring, 107-annular sealing groove, 108-air inlet pipe and 109-pressure gauge.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention relates to a leakage testing device for an oil tank of a power transformer, which comprises a tank wall 1; the welding of 1 side of tank wall has bottom plate 101, the welding has leakage testing pipe 102 in the bottom plate 101 side runs through, sliding connection has drive plate 103 between the leakage testing pipe 102 inner wall, a drive plate 103 side fixedly connected with transfer line 104, transfer line 104 one end fixedly connected with cover plate 105, cover plate 105 is located one side of leakage testing pipe 102 port, the even fixedly connected with of bottom plate 101 side has a plurality of spacing springs 106, spacing spring 106 one end and cover plate 105 side fixed connection, annular seal groove 107 has been seted up to cover plate 105 side, annular seal groove 107 inner wall cooperatees with the port that leakage testing pipe 102 is located tank wall 1 inboard.

As shown in fig. 3-4, the inner wall of the port of the leakage testing tube 102 located outside the tank wall 1 is connected with an air inlet tube 108 in a threaded manner, one end of the air inlet tube 108 contacts with the side surface of the transmission disc 103, and the side surface of the transmission disc 103 is uniformly provided with a plurality of through holes, so that the air inlet tube 108 can conveniently inflate the oil tank through the transmission disc 103.

As shown in fig. 1-2, a pressure gauge 109 is fixedly installed on the peripheral side surface of the air inlet pipe 108, the structure and function of the pressure gauge 109 are the prior art, and are not described again, and the pressure gauge 109 is located on one side of the port of the leak testing pipe 102.

As shown in FIG. 4, the diameter of the cross-section circle of the cover disk 105 is larger than that of the cross-section circle of the leakage testing tube 102, the range is 4cm-6cm, one end of the transmission rod 104 is located at the middle position of the side surface of the cover disk 105, and the cover disk 105 can cover the port of the leakage testing tube 102 conveniently.

Wherein, the inner wall of the annular sealing groove 107 is fixedly connected with a sealing rubber pad, which is convenient for the annular sealing groove 107 to seal the port of the leakage testing pipe 102.

The working principle of the embodiment is as follows: when the leakage testing device is used, one end of the air inlet pipe 108 is screwed into the port of the leakage testing pipe 102 in a threaded manner, one end of the air inlet pipe 108 is in contact with and drives the transmission disc 103 to slide along the inner wall of the leakage testing pipe 102, the transmission disc 103 drives the cover disc 105 to horizontally move through the transmission rod 104, the annular sealing groove 107 on the cover disc 105 is separated from the port of the leakage testing pipe 102, then the air inlet pipe 108 is used for inflating the oil tank, the sealing performance of the oil tank is judged according to the number of indications of the pressure gauge 109, the air inlet pipe 108 is manually screwed out through the outward threads, the cover disc 105 is moved to the original position under the pulling force of the limiting spring 106, the port of the leakage testing pipe 102 is plugged again through the annular sealing groove 107 on the cover disc 105, the leakage testing pipe 102 is automatically sealed, the structure is simple, and the problems that a sealing cover and.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A leakage test device for a power transformer oil tank comprises a tank wall (1); the method is characterized in that: the welding of tank wall (1) side has bottom plate (101), bottom plate (101) side runs through the welding and has examination leak pipe (102), sliding connection has drive plate (103) between examination leak pipe (102) inner wall, a drive plate (103) side fixedly connected with transfer line (104), transfer line (104) one end fixedly connected with cover plate (105), cover plate (105) are located the one side of examination leak pipe (102) port, the even fixedly connected with a plurality of spacing springs (106) in bottom plate (101) side, spacing spring (106) one end and cover plate (105) side fixed connection, annular seal groove (107) have been seted up to cover plate (105) side, annular seal groove (107) inner wall cooperatees with examination leak pipe (102) is located the inboard port of tank wall (1).

2. The leakage testing device of the oil tank of the power transformer as claimed in claim 1, wherein the inner wall of the port of the leakage testing pipe (102) located at the outer side of the tank wall (1) is connected with an air inlet pipe (108) in a threaded manner, one end of the air inlet pipe (108) is in contact with the side surface of the transmission disc (103), and a plurality of through holes are uniformly formed in the side surface of the transmission disc (103).

3. The leakage testing device for the oil tank of the power transformer as claimed in claim 2, wherein a pressure gauge (109) is fixedly mounted on the peripheral side surface of the air inlet pipe (108), and the pressure gauge (109) is positioned on one side of a port of the leakage testing pipe (102).

4. The leakage testing device for the oil tank of the power transformer as claimed in claim 1, wherein the diameter of the circular cross section of the cover disc (105) is larger than that of the circular cross section of the leakage testing tube (102) and ranges from 4cm to 6cm, and one end of the driving rod (104) is located at the middle position of the side surface of the cover disc (105).

5. The leakage test device for the oil tank of the power transformer as claimed in claim 1, wherein a sealing rubber gasket is fixedly connected to the inner wall of the annular sealing groove (107).