CN112103036B - Pressure balancing device for inner cavity of plug-in sleeve base and inner cavity of transformer oil tank - Google Patents
Pressure balancing device for inner cavity of plug-in sleeve base and inner cavity of transformer oil tank Download PDFInfo
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- CN112103036B CN112103036B CN202011008266.2A CN202011008266A CN112103036B CN 112103036 B CN112103036 B CN 112103036B CN 202011008266 A CN202011008266 A CN 202011008266A CN 112103036 B CN112103036 B CN 112103036B
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- sleeve
- oil
- transformer
- sleeve base
- base
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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
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
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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
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
Abstract
The invention discloses a pressure balancing device for an inner cavity of a plug-in sleeve base and an inner cavity of a transformer oil tank, which comprises a cover plate, a capsule and a balance cavity, wherein the top of the balance cavity is fixedly provided with the cover plate for sealing the balance cavity through a bolt, an oiling pipeline penetrates through the cover plate and extends into the balance cavity, the capsule is sleeved at the end part of the transformer oiling pipeline and is communicated with the inner cavity of the sleeve base through the oiling pipeline, and the lower end of the balance cavity is directly connected with an oiling pipeline of a transformer and is connected with the inside of a lifting seat. When the transformer is vacuumized, filled with oil and operated, the pressure balance between the interior of the transformer oil tank and the inner cavity of the plug-in type oil-air sleeve base is ensured, and the oil chamber of the sleeve base is effectively prevented from being damaged.
Description
Technical Field
The invention relates to a pressure balancing device for an inner cavity of a pluggable oil-air sleeve base of a transformer and an inner cavity of a transformer oil tank, belonging to the technology of transformer products.
Background
Along with social development, the power consumption is rapidly increased, and the load of each transformer substation is larger and larger. When accessories such as transformer bushings and the like have faults, the repair and replacement time is particularly critical to the safe and economic operation of the transformer substation. At present, the middle end of transformer oil-air sleeve oil is directly installed inside a transformer oil tank, when the sleeve fails, a transformer body needs to be subjected to oil discharge, sleeve replacement, vacuumizing, oil injection, hot oil circulation, static discharge and other links, and a large amount of time is needed (the time needed by a 110kV transformer is not less than 144 hours).
The oil part of the plug-in type oil-air sleeve is separated from the transformer oil tank through the sleeve base, so that two independent cavities are formed in the inner cavity of the plug-in type oil-air sleeve base of the transformer and the inner cavity of the transformer oil tank. When the fault bushing is replaced, the transformer can be put into operation again only by changing the bushing and oil supplement of the inner cavity of the bushing base and static placement in a short time, so that the time for putting the transformer into operation again is greatly shortened. The middle part of the plug-in oil-air sleeve oil and the transformer oil tank are separated by the sleeve base, the problem of base stress caused by thermal expansion and cold contraction of insulating oil during transformer vacuumizing and operation is considered, and an oil chamber of the sleeve base is prevented from being damaged.
Disclosure of Invention
In order to overcome the defects, the invention provides a pressure balancing device for an inner cavity of a plug-in type oil-air sleeve base of a transformer and an inner cavity of a transformer oil tank, which aims to prevent an oil chamber of the sleeve base from being damaged, so that the pressure balance between the inner part of the transformer oil tank and the inner cavity of the plug-in type oil-air sleeve base is ensured when the transformer is vacuumized, filled with oil and operated.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a plug-in sleeve pipe base inner chamber and transformer tank inner chamber pressure equaliser, its characterized in that, includes pressure equaliser, pressure equaliser include apron, capsule and balanced cavity, the top of balanced cavity is fixed with through the bolt and is used for carrying out the apron sealed to balanced cavity, the transformer pipeline that oils passes the apron and stretches into in the balanced cavity, the capsule cup joints the tip at transformer pipeline that oils, balanced cavity lower extreme and transformer oil pipe way lug connection down.
The upper end of the oiling pipeline is connected with the sleeve base, the lower end of the oiling pipeline is respectively connected with one end of the first valve and one end of the pressure balancing device, the other end of the pressure balancing device is connected with the second valve, the other end of the first valve and the other end of the second valve are connected with the upper end of the oil discharging pipeline, and the lower end of the oil discharging pipeline is connected with the inside of the transformer.
The pressure balancing device for the inner cavity of the plug-in type sleeve base and the inner cavity of the transformer oil tank further comprises a sleeve base, the sleeve base is arranged between the lifting base and the sleeve, the sleeve base is installed inside the lifting base, and the sleeve is installed inside the sleeve base; the top of the sleeve base is connected with a sleeve base flange, the sleeve is connected with a sleeve flange, the lifting seat is connected to the lower part of the sleeve base flange, the upper part of the sleeve base flange is connected with a sleeve flange, and the sleeve is installed in the sleeve base through the sleeve flange; exhaust holes are formed in one side of the sleeve flange, insulating oil injection and vacuumizing holes are formed in the other side of the sleeve flange, and the insulating oil injection and vacuumizing holes are connected with the upper end of an oiling pipeline.
The bushing structure is characterized in that a bushing plug head is arranged at the bottom end of the bushing, a bushing base contact is arranged at the position, corresponding to the bushing plug head, of the bottom of the bushing base, a bushing can be inserted into the bushing base under the matching action of the bushing plug head and the bushing base contact, a wiring terminal at the bottom of the bushing base contact is fixedly connected with a transformer lead connector lug, the transformer lead connector lug is fixed in a bushing contact voltage-sharing ball, and the bushing contact voltage-sharing ball is fixed at the bottom of the bushing base.
As an improvement of the invention, the bottom side surface of the lifting seat is provided with a lifting seat hand hole which is convenient for connecting the phase line of the transformer to the lead connector lug.
Compared with the prior art, the invention has the beneficial effects that:
the invention is realized by using a sleeve base to prevent the oil part of the plug-in oil-air sleeve and the oil part of the transformer oil tank from being stressed. When a fault bushing is replaced, only the bushing and the inner cavity of the bushing base need to be changed for oil supplement and short-time static discharge, and the 110kV transformer can be completed within 8 hours. At present, the middle end of transformer oil-air sleeve oil is directly installed inside a transformer oil tank, when the sleeve fails, a transformer body needs to be subjected to oil discharge, sleeve replacement, vacuumizing, oil injection, hot oil circulation, static discharge and other links, and the time required by a 110kV transformer is not less than 144 hours. Compared with the current transformer, the plug-in oil-air bushing transformer saves not less than 136 hours when the fault bushing is replaced. A large number of transformer bushing faults occur in the whole power grid, and rapid fault removal and recovery operation play an important role in starting economic and safe operation of the power grid.
Drawings
Fig. 1 is a schematic structural diagram of a pressure balancing device according to the present invention.
Fig. 2 is an installation diagram of the plugging sleeve of the additional sleeve base.
The device comprises a lifting seat hand hole 1, a sleeve base 2, a sleeve 3, a sleeve base flange 4, an exhaust hole 5, an insulating oil injection and vacuum pumping hole 6, an oiling pipeline 7, a first valve 8, a pressure balancing device 9, a cover plate 91, a capsule 92, a balancing cavity 93, a second valve 10, an oil discharging pipeline 11, a sleeve contact pressure equalizing ball 12, a sleeve plug head 13, a sleeve base contact 14, a lead wire connector lug 15, a lifting seat 16 and a sleeve flange 17.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the invention provides a pressure balancing device for an inner cavity of a plug-in sleeve base and an inner cavity of a transformer oil tank, which is characterized by comprising a pressure balancing device 9, wherein the pressure balancing device 9 comprises a cover plate 91, a capsule 92 and a balancing cavity 93, the top of the balancing cavity 93 is fixedly provided with the cover plate 91 for sealing the balancing cavity 93 through bolts, a transformer oil applying pipeline 7 penetrates through the cover plate 91 and extends into the balancing cavity 93, the capsule 92 is sleeved at the end part of the transformer oil applying pipeline 7, and the lower end of the balancing cavity 93 is directly connected with a transformer oil discharging pipeline 11.
The upper end of the upper oil pipeline 7 is connected with the sleeve base 2, the lower end of the upper oil pipeline is respectively connected with one end of a first valve 8 and one end of a pressure balancing device 9, the other end of the pressure balancing device 9 is connected with a second valve 10, the other end of the first valve 8 and the other end of the second valve 10 are connected with the upper end of a lower oil pipeline 11, and the lower end of the lower oil pipeline 11 is connected with the inside of the transformer.
The pressure balancing device for the inner cavity of the plug-in type sleeve base and the inner cavity of the transformer oil tank further comprises a sleeve base 2, the sleeve base 2 is further arranged between the lifting seat 16 and the sleeve 3, the sleeve base 2 is installed inside the lifting seat 16, and the sleeve 3 is installed inside the sleeve base 2; the top of the sleeve base 2 is connected with a sleeve base flange 4, the sleeve 3 is connected with a sleeve flange 17, the lifting seat 16 is connected with the lower part of the sleeve base flange 4, the upper part of the sleeve base flange 4 is connected with the sleeve flange 17, and the sleeve 3 is arranged in the sleeve base 2 through the sleeve flange 17; exhaust holes 5 are formed in one side of the sleeve flange 17, insulating oil injection and vacuumizing holes 6 are formed in the other side of the sleeve flange, and the insulating oil injection and vacuumizing holes 6 are connected with the upper end of an oil feeding pipeline 7.
The bottom of sleeve pipe 3 is equipped with sleeve pipe plug head 13, and the position that the bottom of sleeve pipe base 2 corresponds sleeve pipe plug head 13 is equipped with supporting sleeve pipe base contact 14, and the cooperation through sleeve pipe plug head 13 and sleeve pipe base contact 14 makes sleeve pipe 3 can insert in sleeve pipe base 2, and binding post and transformer lead wire connector lug 15 fixed connection of sleeve pipe base contact 14 bottom, and transformer lead wire connector lug 15 is fixed in sleeve pipe contact voltage-sharing ball 12, and sleeve pipe contact voltage-sharing ball 12 is fixed in the bottom of sleeve pipe base 2.
The side surface of the bottom of the lifting seat 16 is provided with a lifting seat hand hole 1 which is convenient for connecting a phase line of the transformer to the lead connector 15.
The middle part of the pluggable oil-air bushing oil is separated from the transformer oil tank through the first valve, the pressure balancing device and the bushing base, so that two independent cavities are formed in the inner cavity of the pluggable oil-air bushing base of the transformer and the inner cavity of the transformer oil tank. When the transformer is vacuumized and filled with oil, the first valve and the second valve are opened, and the inner cavity of the transformer oil tank is directly communicated with the inner cavity of the plug-in type oil-air sleeve base through the oil pipe, so that the balance of the internal pressure and the external pressure of the plug-in type oil-air sleeve base is ensured. In the normal operation process of the transformer, the first valve is closed, the second valve is opened, and the pressure balancing device is involved in work, so that the pressure of the two inner cavities is balanced, and independent cavities are formed inside and outside the sleeve base to prevent mutual pollution. When the fault bushing is replaced, the first valve and the second valve are closed, and the inner cavity of the plug-in type oil-air bushing base of the transformer and the inner cavity of the transformer oil tank are two independent cavities. The transformer can be put into operation again only by changing the oil-air sleeve and filling oil in the inner cavity of the sleeve base and standing for a short time.
The capsule of the pressure balancing device is directly connected with the oiling pipeline and is connected with the inner cavity of the plug-in type oil-air sleeve base and positioned at the upper end of the cavity of the pressure balancing device; the lower end of the cavity of the pressure balancing device is directly connected with the oil discharging pipeline and is connected with the inside of the transformer. When the use environment of the transformer changes, the pressure of the two inner cavities is adjusted through the capsule, and the pressure difference between the inside and the outside is compensated.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention without departing from the spirit and scope of the invention.
Claims (3)
1. The pressure balancing device for the inner cavity of the plug-in type sleeve base and the inner cavity of the transformer oil tank is characterized by comprising a pressure balancing device (9), wherein the pressure balancing device (9) comprises a cover plate (91), a capsule (92) and a balancing cavity (93), the top of the balancing cavity (93) is fixedly provided with the cover plate (91) used for sealing the balancing cavity (93) through bolts, a transformer oiling pipeline (7) penetrates through the cover plate (91) and extends into the balancing cavity (93), the capsule (92) is sleeved at the end part of the transformer oiling pipeline (7), and the lower end of the balancing cavity (93) is directly connected with a transformer oil discharging pipeline (11);
the upper end of the upper oil pipeline (7) is connected with an insulating oil injection hole and a vacuumizing hole (6), the lower end of the upper oil pipeline is respectively connected with one end of a first valve (8) and one end of a pressure balancing device (9), the other end of the pressure balancing device (9) is connected with a second valve (10), the other end of the first valve (8) and the other end of the second valve (10) are connected with the upper end of a lower oil pipeline (11), and the lower end of the lower oil pipeline (11) is connected with the inside of a transformer;
the oil-air sleeve lifting device is characterized by further comprising a sleeve base (2), wherein the sleeve base (2) is arranged between the lifting seat (16) and the oil-air sleeve (3), the sleeve base (2) is installed inside the lifting seat (16), and the oil-air sleeve (3) is installed inside the sleeve base (2); the oil-air sleeve is characterized in that a sleeve base flange (4) is connected to the top of the sleeve base (2), an oil-air sleeve (3) is connected with a sleeve flange (17), a lifting seat (16) is connected to the lower portion of the sleeve base flange (4), the upper portion of the sleeve base flange (4) is connected with the sleeve flange (17), and the oil-air sleeve (3) is installed in the sleeve base (2) through the sleeve flange (17); exhaust holes (5) are formed in one side of the sleeve flange (17), insulating oil injection and vacuumizing holes (6) are formed in the other side of the sleeve flange, and the insulating oil injection and vacuumizing holes (6) are connected with the upper end of the oiling pipeline (7).
2. The pressure balancing device for the inner cavity of the pluggable sleeve base and the inner cavity of the transformer oil tank as claimed in claim 1, wherein a sleeve plug head (13) is arranged at the bottom end of the oil-air sleeve (3), a matched sleeve base contact (14) is arranged at the bottom of the sleeve base (2) corresponding to the position of the sleeve plug head (13), the oil-air sleeve (3) can be inserted into the sleeve base (2) through the cooperation of the sleeve plug head (13) and the sleeve base contact (14), the wiring terminal at the bottom of the sleeve base contact (14) is fixedly connected with the transformer lead connector (15), the transformer lead connector (15) is fixed in the sleeve contact pressure equalizing ball (12), and the sleeve contact pressure equalizing ball (12) is fixed at the bottom of the sleeve base (2).
3. The pressure balancing device for the inner cavity of the plug-in sleeve base and the inner cavity of the transformer oil tank as claimed in claim 1, wherein the bottom side of the lifting seat (16) is provided with a lifting seat hand hole (1) for connecting a phase line of the transformer to a lead connector (15) conveniently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011008266.2A CN112103036B (en) | 2020-09-23 | 2020-09-23 | Pressure balancing device for inner cavity of plug-in sleeve base and inner cavity of transformer oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011008266.2A CN112103036B (en) | 2020-09-23 | 2020-09-23 | Pressure balancing device for inner cavity of plug-in sleeve base and inner cavity of transformer oil tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112103036A CN112103036A (en) | 2020-12-18 |
| CN112103036B true CN112103036B (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011008266.2A Active CN112103036B (en) | 2020-09-23 | 2020-09-23 | Pressure balancing device for inner cavity of plug-in sleeve base and inner cavity of transformer oil tank |
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| Country | Link |
|---|---|
| CN (1) | CN112103036B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024549A (en) * | 2009-09-18 | 2011-04-20 | 特变电工沈阳变压器集团有限公司 | Ground-mounted oil storage cabinet |
| CN211045232U (en) * | 2020-01-08 | 2020-07-17 | 西安神电高压电器有限公司 | Fully-sealed outlet sleeve |
-
2020
- 2020-09-23 CN CN202011008266.2A patent/CN112103036B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024549A (en) * | 2009-09-18 | 2011-04-20 | 特变电工沈阳变压器集团有限公司 | Ground-mounted oil storage cabinet |
| CN211045232U (en) * | 2020-01-08 | 2020-07-17 | 西安神电高压电器有限公司 | Fully-sealed outlet sleeve |
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| Publication number | Publication date |
|---|---|
| CN112103036A (en) | 2020-12-18 |
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