CN108597816B - Mounting structure of on-load tap-changer oil flow relay - Google Patents
Mounting structure of on-load tap-changer oil flow relay Download PDFInfo
- Publication number
- CN108597816B CN108597816B CN201810378361.8A CN201810378361A CN108597816B CN 108597816 B CN108597816 B CN 108597816B CN 201810378361 A CN201810378361 A CN 201810378361A CN 108597816 B CN108597816 B CN 108597816B
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- Prior art keywords
- oil
- oil chamber
- chamber
- load tap
- changer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/404—Protective devices specially adapted for fluid filled transformers
Abstract
The invention provides a mounting structure of an oil flow relay of an on-load tap-changer, which comprises the on-load tap-changer, wherein the on-load tap-changer comprises an outer oil chamber, liquid oil is contained in the outer oil chamber, an inner oil chamber is arranged in the outer oil chamber, and a through hole is formed between the inner oil chamber and the outer oil chamber; an oil flow control relay is arranged in the inner oil chamber and comprises an oil inlet and an oil outlet, and the oil inlet is communicated with the through hole; the top of the outer oil chamber is provided with an air outlet which is communicated with the respirator. The oil flow control relay is arranged in the oil storage chamber of the on-load tap-changer, the use functions of the on-load tap-changer and the oil flow control relay can be realized, and the problem of oil leakage does not need to be worried about during use.
Description
Technical Field
The invention belongs to the technical field of transformers, and particularly relates to an installation structure of an oil flow relay of an on-load tap-changer.
Background
When the on-load tap-changer is used, an oil flow control relay, namely an oil flow control relay (gas relay) is installed, and if the oil flow speed in the on-load tap-changer is too high, the oil flow control relay gives an electric signal to give an alarm.
An oil flow control relay in the prior art is installed outside an on-load tap-changer, and is usually installed on the top of the on-load tap-changer, wherein an oil storage chamber of the on-load tap-changer is also installed outside the on-load tap-changer, the oil storage chamber is communicated with an oil inlet of the oil flow control relay, and an oil outlet of the oil flow control relay is communicated with the on-load tap-changer. However, due to the installation of the oil flow relay and the oil storage chamber, the upper mechanism of the on-load tap-changer is complex, the appearance is hard to see, particularly the oil level is increased, a plurality of oil way connection points are added, the oil leakage probability is increased, and even the problem of oil leakage of some transformers is solved completely.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an installation structure of an oil flow relay of an on-load tap-changer, and solve the problem of oil leakage of a pipe interface between an oil storage chamber and the oil flow control relay and a pipe interface between the oil flow control relay and the on-load tap-changer in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a mounting structure of an on-load tap-changer oil flow relay comprises an on-load tap-changer, wherein the on-load tap-changer comprises an outer oil chamber, the outer oil chamber is used for containing liquid oil, an inner oil chamber is arranged in the outer oil chamber, and a through hole is formed between the inner oil chamber and the outer oil chamber;
an oil flow control relay is arranged in the inner oil chamber and comprises an oil inlet and an oil outlet, and the oil inlet is communicated with the through hole;
the top of outer grease chamber is equipped with the gas outlet, the gas outlet is used for outer grease chamber and outside to carry out gas exchange.
Further, the through hole is provided on a side wall of the inner oil chamber, and the through hole is submerged in the liquid oil.
Further, the oil flow control relay is arranged in the outer oil chamber, and an oil outlet of the oil flow control relay is communicated with the through hole.
Further, the through hole is provided at the bottom of the inner oil chamber, and the through hole is not submerged in the liquid oil.
Furthermore, an oil level gauge is arranged on the outer wall of the outer oil chamber.
Further, the respirator is further included, and the respirator is communicated with the air outlet.
Further, the air outlet is communicated with the respirator through a pipe.
Further, the top covers of the inner oil chamber and the outer oil chamber are connected.
Further, the side wall of the inner oil chamber is provided with a pinhole which is not submerged in the liquid oil.
Compared with the prior art, the invention has the following technical effects:
the oil flow control relay is arranged in the oil storage chamber of the on-load tap-changer, the use functions of the on-load tap-changer and the oil flow control relay can be realized, and the problem of oil leakage does not need to be worried about during use.
Drawings
FIG. 1 is a detailed block diagram of an embodiment of the present invention;
fig. 2 is a detailed structural diagram of another embodiment of the present invention.
The meaning of the individual reference symbols in the figures is: 1-outer oil chamber, 2-inner oil chamber, 3-through hole, 4-oil flow control relay, 5-tube, 6-respirator, 7-oil level gauge, 8-pinhole.
The present invention will be explained in further detail with reference to the accompanying drawings.
Detailed Description
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
Example 1:
as shown in fig. 1, the present embodiment provides a mounting structure of an on-load tap-changer oil flow relay, including an on-load tap-changer, where the on-load tap-changer includes an outer oil chamber 1, the outer oil chamber 1 is used for containing liquid oil, an inner oil chamber 2 is disposed in the outer oil chamber 1, and a through hole 3 is disposed between the inner oil chamber 2 and the outer oil chamber 1;
an oil flow control relay 4 is arranged in the inner oil chamber 2, the oil flow control relay 4 comprises an oil inlet and an oil outlet, and the oil inlet is communicated with the through hole 3;
the top of the outer oil chamber 1 is provided with an air outlet which is used for gas exchange between the outer oil chamber 1 and the outside.
This embodiment is through in the oil flow control relay with steerable oil flow immerses liquid oil, just so need not consider liquid oil and can take place the problem of oil leak when oil flow control relay, and this embodiment divides into interior grease chamber and outer grease chamber with the oil drum, and liquid oil flows according to the arrow direction in figure 1, and when liquid oil flow speed reached a certain setting value, oil flow control relay gave electrical signal.
The through-hole 3 in this embodiment is provided on the side wall of the internal oil chamber 2, and the through-hole 3 is submerged in the liquid oil. In this embodiment, the air outlet is connected to the respirator 6 through a tube 5.
The present embodiment further comprises a breather 6, and the breather 6 is communicated with the air outlet. The oil flow control relay is arranged on the side wall of the inner oil chamber, the top of the inner oil chamber is the same as air through a breather 6, and the rest part of the inner oil chamber is not communicated with the air.
In the present embodiment, an oil level gauge 7 is disposed on the outer wall of the outer oil chamber 1 for monitoring the liquid oil level inside the inner oil chamber and the outer oil chamber.
In this embodiment the inner oil chamber 2 is connected to the top cover of the outer oil chamber 1.
In order to enable the internal pressure and the external pressure of the internal oil chamber 2 to be consistent when the on-load tap-changer works, a pinhole 8 is arranged on the side wall of the internal oil chamber 2, and the pinhole 8 is not submerged in liquid oil.
Example 2
As shown in fig. 2, the present embodiment differs from embodiment 1 in that: an oil flow control relay 4 is arranged in the outer oil chamber 1, and an oil outlet of the oil flow control relay 4 is communicated with the through hole 3.
Wherein the through-hole 3 is provided at the bottom of the inner oil chamber 2 and the through-hole 3 is not submerged in the liquid oil. As shown in fig. 2, the oil flow control relay 4 may also be disposed in the outer oil chamber 1, at this time, the inner oil chamber 2 is filled with air, the top of the inner oil chamber 2 is the same as the air through a breather, the rest part of the oil drum is not communicated with the air, the liquid oil flows in the direction of the arrow in fig. 1, and when the flow speed of the liquid oil reaches a certain set value, the oil flow control relay gives an electrical signal.
The invention immerges an oil flow control relay 4 into oil in an external oil chamber 1 at the top of an on-load tap-changer, an internal oil chamber 2 is arranged in the external oil chamber 1 and is connected with a top cover of a shell, and the upper part of the internal oil chamber 2 is air. One end of the oil flow control relay is connected to the wall of the inner oil chamber 2 according to the oil flow direction. The top of the inner oil chamber 2 is communicated with the air through a breather 6, and other parts of the outer shell are not communicated with the air (except for a pressure relief valve). The on-load tap changer oil flows in the direction of the arrow in the figure. When the oil flow speed reaches a certain value, an electric signal is given. The size of the 8 holes of the vent needle hole is ensured, the pressure in the inner oil chamber is consistent when the on-load tap-changer is in a normal state, and a large amount of gas or liquid can not rapidly pass through the vent needle hole when the on-load tap-changer fails. The oil flow control relay inlet and outlet are ensured to be below the oil level surface under various environmental temperatures. The oil level is displayed at an oil level gauge outside the housing.
Claims (2)
1. A mounting structure of an on-load tap-changer oil flow relay comprises an on-load tap-changer, wherein the on-load tap-changer comprises an outer oil chamber (1), the outer oil chamber (1) is used for containing liquid oil, and the mounting structure is characterized in that an inner oil chamber (2) is arranged in the outer oil chamber (1), and a through hole (3) is formed between the inner oil chamber (2) and the outer oil chamber (1);
an oil flow control relay (4) is arranged in the inner oil chamber (2), the oil flow control relay (4) comprises an oil inlet and an oil outlet, and the oil inlet is communicated with the through hole (3);
the top of the outer oil chamber (1) is provided with an air outlet, and the air outlet is used for gas exchange between the outer oil chamber (1) and the outside;
the through hole (3) is arranged on the side wall of the inner oil chamber (2), and the through hole (3) is submerged in the liquid oil;
an oil level gauge (7) is arranged on the outer wall of the outer oil chamber (1);
the respirator (6) is also included, and the respirator (6) is communicated with the air outlet;
the air outlet is communicated with the respirator (6) through a pipe (5);
the inner oil chamber (2) is connected with the top cover of the outer oil chamber (1).
2. The on-load tap changer oil flow relay mounting structure according to claim 1, characterized in that a pinhole (8) is provided on a side wall of the inner oil chamber (2), and the pinhole (8) is not submerged in liquid oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810378361.8A CN108597816B (en) | 2018-04-25 | 2018-04-25 | Mounting structure of on-load tap-changer oil flow relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810378361.8A CN108597816B (en) | 2018-04-25 | 2018-04-25 | Mounting structure of on-load tap-changer oil flow relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108597816A CN108597816A (en) | 2018-09-28 |
| CN108597816B true CN108597816B (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810378361.8A Active CN108597816B (en) | 2018-04-25 | 2018-04-25 | Mounting structure of on-load tap-changer oil flow relay |
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| CN (1) | CN108597816B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768522B (en) * | 2019-02-21 | 2020-04-10 | 西安交通大学 | Digital gas protection method for on-load tap-changer of transformer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57194509A (en) * | 1981-05-27 | 1982-11-30 | Kansai Electric Power Co Inc:The | On-load tap changer |
| CN104167285A (en) * | 2013-05-17 | 2014-11-26 | 许安良 | On-load tap changer with on-line negative pressure oil filtering device |
| CN204008219U (en) * | 2014-08-25 | 2014-12-10 | 国家电网公司 | The on-load tap changer equipment that draws oil sample |
| CN106653292A (en) * | 2015-07-23 | 2017-05-10 | 沈阳诚禾嘉信电力设备有限公司 | Full-seal metal corrugated oil conservator |
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- 2018-04-25 CN CN201810378361.8A patent/CN108597816B/en active Active
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| CN108597816A (en) | 2018-09-28 |
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