CN206002261U - A kind of device for detecting high-power transformer cannula tip sealing tiny leakage - Google Patents
A kind of device for detecting high-power transformer cannula tip sealing tiny leakage Download PDFInfo
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- CN206002261U CN206002261U CN201621018410.XU CN201621018410U CN206002261U CN 206002261 U CN206002261 U CN 206002261U CN 201621018410 U CN201621018410 U CN 201621018410U CN 206002261 U CN206002261 U CN 206002261U
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- valve
- air chamber
- pipeline
- power transformer
- vacuum pump
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- 238000007789 sealing Methods 0.000 title claims abstract description 8
- 239000001307 helium Substances 0.000 claims abstract description 14
- 229910052734 helium Inorganic materials 0.000 claims abstract description 14
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000004888 barrier function Effects 0.000 abstract description 4
- 238000004804 winding Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
This utility model provides a kind of device for detecting high-power transformer cannula tip sealing tiny leakage, including air chamber, A valve, B valve, vacuum pump it is characterised in that the lower end of described air chamber is provided with B ring flange；A pipeline is connected with the side wall of air chamber, described A pipeline is provided with B valve, the A ring flange that one end of A pipeline is also welded with bagging pipe with a centre in the way of flange connection is connected；The upper end of air chamber is provided with A valve, and the upper end of described A valve is provided with B pipeline；The side of air chamber is additionally provided with High Pressure Air Compressor and vacuum pump, is connected with helium mass analyzer at the outlet of described vacuum pump；Can solve to detect the oil-filled technical barrier running cannula tip sealing tiny leaks of high-power transformer in the past, improve power system security energy.
Description
Technical field
This utility model is related to bushing shell for transformer technical field, and specifically one kind is used for detecting high-power transformer sleeve pipe
The device of end seal tiny leakage.
Background technology
Transformator carries the conversion of voltage and the distribution of electric energy in electrical network, is the most important equipment in electrical network, its
Operational reliability directly affects the power supply reliability of electrical network.And sleeve pipe carry Transformer Winding lead-out wire be connected with electrical network with
And the insulation of high potential and ground potential, it is the crucial group parts of transformator, sleeve pipe fault will lead to transformer fault, even transformation
Device burns.Cannula tip sealing leak is one of sleeve pipe major failure, and it can lead to moisture and moisture to enter along winding leading-out wire
Enter inside Transformer Winding, so that winding insulation is made moist, cause transformer insulated puncturing.
For the sleeve pipe of miniature transformer, because cannula tip is less than transformer oil storage, the leakage of its end seal can be led to
Cross whether observation end has oil stain to be checked；But for high-power transformer, because cannula tip is significantly larger than transformer oil storage
Cabinet, exceeds nearly 10m for 1000kV extra-high voltage transformer sleeve pipe, and the leakage of its end seal cannot have or not oil stain by observation and sentence
Disconnected, conventional conservator pressurization leakage detection method due to allow the limited pressure applying it is impossible to effective detection its whether have seepage, therefore must
The oil-filled technical barrier running cannula tip sealing tiny leaks of high-power transformer being in the past difficult to detect must be solved.
Content of the invention
This invention is in order to the oil-filled cannula tip of running of high-power transformer solving to be difficult to detect seals tiny leaks in the past
Technical barrier.
The technical solution adopted in the utility model is：A kind of for detecting that high-power transformer cannula tip seals tiny leakage
Device, including air chamber, A valve, B valve, vacuum pump, High Pressure Air Compressor is it is characterised in that the lower end of described air chamber is provided with B flange
Disk；A pipeline is connected with the side wall of air chamber, described A pipeline is provided with B valve, one end of A pipeline also in the way of flange connection with
The A ring flange that one centre is welded with bagging pipe is connected；The upper end of air chamber is provided with A valve, and the upper end of described A valve is provided with B pipeline；
The side of air chamber is additionally provided with High Pressure Air Compressor and vacuum pump, is connected with helium mass analyzer at the outlet of described vacuum pump.
Further, described air chamber is cylinder.
Further, described bagging tube end is provided with rubber annular pipe box.
The beneficial effects of the utility model and feature are：1. effectively solving is difficult to the oil-filled fortune of high-power transformer detecting in the past
Row cannula tip seals the technical barrier of tiny leaks, improves the safety that such high-power transformer runs；2. structure is simple,
Easily operated；3. certainty of measurement is high, can effectively judge that cannula tip whether there is leakage problem.
Brief description
Fig. 1 is the structural representation of this utility model embodiment；
In figure label represents respectively：1- helium bag, 2- bagging pipe, 3-A ring flange, 4-B valve, 5- rubber annular pipe box,
The tested sleeve pipe of 6-A pipeline, 7-, 8-B ring flange, 9- air chamber, 10-A valve, 11-B pipeline, 12- vacuum pump inlet, 13- high pressure are empty
Press entrance, 14- High Pressure Air Compressor, 15- vacuum pump, 16- helium mass analyzer, 17- vacuum pump discharge.
Specific embodiment
1 pair of this utility model is further described below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of device for detecting high-power transformer cannula tip sealing tiny leakage, including air chamber 9, A
Valve 10, B valve 4, vacuum pump 15 are it is characterised in that the lower end of described air chamber 9 is provided with B ring flange 8；Connect on the side wall of air chamber 9
There is A pipeline 6, described A pipeline 6 is provided with B valve 4, one end of A pipeline 6 is also welded with a centre in the way of flange connection
The A ring flange 3 of bagging pipe 2 is connected；The upper end of air chamber 9 is provided with A valve 10, and the upper end of described A valve 10 is provided with B pipeline 11.
The side of air chamber 9 is additionally provided with High Pressure Air Compressor 14 and vacuum pump 15, is connected with the outlet 17 of described vacuum pump 15
Helium mass analyzer 16, can read leak rate data from the display screen of helium mass analyzer in real time.
Described bagging pipe 2 end is provided with rubber annular pipe box 5, for ensureing that helium bag 1 can closely be enclosed within bagging pipe 2
Face.
Seal groove, groove built-in ring are all had on the end face of flange of above-mentioned all of ring flange, uses spiral shell to after connecting
Pipeline is tightly connected together by bolt or studs, for ensureing gas circuit air-tightness.
This is used for detecting the device that high-power transformer cannula tip seals tiny leakage, its test method comprises the steps：：
A. high-power transformer is had a power failure, carry out the safety measures such as ground connection；
B. remove tested sleeve pipe 7 top cable pigtail；
C. air chamber 9 is arranged on tested sleeve pipe 7 end；
D. open A valve 10, close B valve 4；
E. install helium bag 1；
F. B pipeline 11 is connected with vacuum pump inlet 12；
G. start vacuum pump 15 continuous evacuation 2 hours；
H. close A valve 10, open B valve 4, helium enters air inlet chamber 9, if tested sleeve pipe 7 end seal is problematic, helium
Gas sleeve pipe 7 end；
I. the B pipeline 11 being connected with vacuum pump inlet 12 is switched to High Pressure Air Compressor outlet 13；Withdraw from helium bag 1, with
When open A valve 10 and B valve 4；
J. start High Pressure Air Compressor 14 purging air chamber 30～60 minutes；
K. the B pipeline 11 being connected with High Pressure Air Compressor 14 is switched to vacuum pump inlet 12 entrance point；
L. close B valve 4, open A valve 10；
M. first start helium mass analyzer 16 testing equipment, restart vacuum pump 15 evacuation, detected very using helium mass analyzer 16
The leak rate data of empty pump 15 outlet, may thereby determine that this only tested sleeve pipe 7 end seal whether there is problem, determine this
Tested sleeve pipe 7 is changed the need of carrying out maintenance.
This device has been carried out applying in the real work practice that high-power transformer cannula tip seals and tries at present
Test, achieve good Detection results, improve the safety in operation of high-power transformer equipment.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have been shown and described above.One's own profession
The technical staff of industry it should be appreciated that this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model is also
Have various changes and modifications, these changes and improvements both fall within the range of claimed this utility model.This utility model
Claimed scope is by appending claims and its equivalent thereof.
Claims (3)
1. a kind of device for detecting high-power transformer cannula tip sealing tiny leakage, including air chamber (9), A valve (10), B
Valve (4), vacuum pump (15)；It is characterized in that the lower end of described air chamber (9) is provided with B ring flange (8)；On the side wall of air chamber (9)
It is connected with A pipeline (6), described A pipeline (6) is provided with B valve (4), one end of A pipeline (6) is also in the way of flange connection with one
The A ring flange (3) that individual centre is welded with bagging pipe (2) is connected；The upper end of air chamber (9) is provided with A valve (10), described A valve (10)
Upper end be provided with B pipeline (11)；The side of air chamber (9) is additionally provided with High Pressure Air Compressor (14) and vacuum pump (15), described vacuum pump
(15) outlet (17) place is connected with helium mass analyzer (16).
2. seal the device of tiny leakage, described air chamber (9) according to described in claim 1 for detecting high-power transformer cannula tip
For cylinder.
3. seal the device of tiny leakage, described bagging pipe according to described in claim 1 for detecting high-power transformer cannula tip
(2) end is provided with rubber annular pipe box (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621018410.XU CN206002261U (en) | 2016-08-31 | 2016-08-31 | A kind of device for detecting high-power transformer cannula tip sealing tiny leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621018410.XU CN206002261U (en) | 2016-08-31 | 2016-08-31 | A kind of device for detecting high-power transformer cannula tip sealing tiny leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206002261U true CN206002261U (en) | 2017-03-08 |
Family
ID=58193610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621018410.XU Active CN206002261U (en) | 2016-08-31 | 2016-08-31 | A kind of device for detecting high-power transformer cannula tip sealing tiny leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206002261U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124135A (en) * | 2016-08-31 | 2016-11-16 | 国家电网公司 | A kind of device and method sealing tiny leakage for detecting high-power transformer cannula tip |
| CN107976291A (en) * | 2017-12-15 | 2018-05-01 | 大唐河北发电有限公司马头热电分公司 | A kind of airtight test instrument of generator outlet casing |
| CN110146231A (en) * | 2019-06-17 | 2019-08-20 | 蚌埠兴创电子科技有限公司 | A kind of helium Mass Spectrometer Method device for saving helium |
| CN112816140A (en) * | 2020-12-31 | 2021-05-18 | 国网湖南省电力有限公司 | Device and method for field detection of oil leakage performance of high-voltage bushing of transformer |
-
2016
- 2016-08-31 CN CN201621018410.XU patent/CN206002261U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124135A (en) * | 2016-08-31 | 2016-11-16 | 国家电网公司 | A kind of device and method sealing tiny leakage for detecting high-power transformer cannula tip |
| CN107976291A (en) * | 2017-12-15 | 2018-05-01 | 大唐河北发电有限公司马头热电分公司 | A kind of airtight test instrument of generator outlet casing |
| CN110146231A (en) * | 2019-06-17 | 2019-08-20 | 蚌埠兴创电子科技有限公司 | A kind of helium Mass Spectrometer Method device for saving helium |
| CN112816140A (en) * | 2020-12-31 | 2021-05-18 | 国网湖南省电力有限公司 | Device and method for field detection of oil leakage performance of high-voltage bushing of transformer |
| CN112816140B (en) * | 2020-12-31 | 2023-08-15 | 国网湖南省电力有限公司 | Device and method for on-site detection of oil seepage performance of high-voltage bushing of transformer |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |