CN114738573A - Anti-leakage structure of throat junction lifting seat of phase-shifting transformer and mounting method - Google Patents

Anti-leakage structure of throat junction lifting seat of phase-shifting transformer and mounting method Download PDF

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Publication number
CN114738573A
CN114738573A CN202210191424.5A CN202210191424A CN114738573A CN 114738573 A CN114738573 A CN 114738573A CN 202210191424 A CN202210191424 A CN 202210191424A CN 114738573 A CN114738573 A CN 114738573A
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CN
China
Prior art keywords
throat
seat
phase
shifting transformer
flange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210191424.5A
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Chinese (zh)
Inventor
杨哲
李程
范洪涛
龙腾
李志伟
赵翠
车征
程玉芳
刘洁
焦玉龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baoding Tianwei Baobian Electric Co Ltd
Original Assignee
Baoding Tianwei Baobian Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baoding Tianwei Baobian Electric Co Ltd filed Critical Baoding Tianwei Baobian Electric Co Ltd
Priority to CN202210191424.5A priority Critical patent/CN114738573A/en
Publication of CN114738573A publication Critical patent/CN114738573A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/036—Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

The invention provides a leak-proof structure of a throat junction rising seat of a phase-shifting transformer, which comprises: the pipe type pipe joint comprises a throat joint lifting seat, fastening pieces, connecting pieces and sealing gaskets, wherein the throat joint lifting seat is of a circular pipe structure with flanges at two ends, the sealing gaskets are assembled between the flanges of the throat joint lifting seat and the corresponding flanges and used for sealing and fastened through the fastening pieces, and two ends of each connecting piece are respectively connected with the flanges of the throat joint lifting seat and the corresponding flanges. The fastening piece of the joint of the throat junction rising seat of the phase-shifting transformer can be protected from being loosened due to vibration of the transformer to influence the sealing effect.

Description

Anti-leakage structure of throat junction rising seat of phase-shifting transformer and installation method
Technical Field
The invention belongs to the technical field of power transmission and transformation, and particularly relates to a leak-proof structure and an installation method for a throat junction rising seat of a phase-shifting transformer.
Background
Under the environments of extra-high voltage alternating current-direct current hybrid connection, large-scale new energy centralized access and the like, the power flow of a power grid has great randomness in space-time distribution, so that the regulation and control difficulty is increased, and a power flow channel of the power grid is blocked inevitably, and the power transmission efficiency of a power transmission network is influenced.
The large power grid is additionally provided with the power flow control devices such as the phase-shifting transformer and the like, so that the transmission capacity of a key section can be effectively improved, the power flow distribution of the power grid is controlled, the situation of unbalanced power flow is relieved, the smoothness of a power flow channel of an alternating current power transmission network is ensured, and the problems of electromagnetic circulation and the like can be effectively controlled.
Along with the increase of the transmission capacity and voltage of a power grid, the ultrahigh-voltage super-large-capacity phase-shifting transformer is usually designed into a structure of a three-phase combined transformer, the choke junctions among single-phase transformers are connected through lifting seats, and oil sealing is carried out by pressing sealing gaskets between lifting seat flanges through fasteners. Because the lifting seat is horizontally arranged and the inside of the lifting seat is filled with insulating oil, the sealing washer is reliably pressed under the condition that the self weight of the lifting seat is larger, and a larger pretightening force must be applied to the fastening piece. As the vibration of the transformer during long-term operation causes the fastener to loosen and the pressing force of the sealing washer is reduced, the occurrence of oil leakage accidents between the flanges of the lifting seat is very common.
Disclosure of Invention
In order to solve the technical problems, the invention provides an anti-leakage structure of a throat junction rising seat of a phase-shifting transformer, an installation method and the phase-shifting transformer, and the technical scheme is used for solving the technical problems.
The invention discloses a leak-proof structure of a throat junction rising seat of a phase-shifting transformer in a first aspect; the method comprises the following steps: the pipe type pipe connecting device comprises a throat junction lifting seat, a fastening piece, a connecting piece and a sealing washer, wherein the throat junction lifting seat is of a circular pipe structure with flanges at two ends, the sealing washer is assembled between the flange of the throat junction lifting seat and the corresponding flange and used for sealing and is fastened through the fastening piece, and two ends of the connecting piece are respectively connected with the flange of the throat junction lifting seat and the corresponding flange.
According to the anti-leakage structure of the throat junction rising seat of the phase-shifting transformer in the first aspect of the invention, the connecting piece is of a 7-shaped structure.
According to the anti-leakage structure of the throat junction rising seat of the phase-shifting transformer in the first aspect of the invention, the connecting piece and the flange of the throat junction rising seat are of an integral structure or a split structure.
According to the first aspect of the invention, the number of the connecting pieces is one or more.
According to the anti-leakage structure for the throat junction rising seat of the phase-shifting transformer in the first aspect of the invention, a plurality of connecting pieces are uniformly distributed around the flange of the throat junction rising seat.
According to the anti-leakage structure for the throat junction lifting seat of the phase-shifting transformer in the first aspect of the invention, the connecting piece is made of steel.
According to the first aspect of the invention, the fastener comprises a bolt, a washer and a nut.
The invention discloses a phase-shifting transformer in a second aspect, which comprises the anti-leakage structure of the throat junction rising seat of the phase-shifting transformer in any one aspect of the invention.
The third aspect of the invention discloses a method for installing an anti-leakage structure of a throat junction rising seat of a phase-shifting transformer, which is used for installing the anti-leakage structure of the throat junction rising seat of the phase-shifting transformer in any one of the first aspect of the invention, and specifically comprises the following steps:
step S1, welding one end of the connecting piece on the throat lifting seat flange in advance;
step S2, after the throat joint lifting seat welded with the connecting piece is hoisted to an installation position, a sealing gasket is assembled between the flange of the throat joint lifting seat and the corresponding flange for sealing, and the flanges are fastened and connected through a fastening piece;
and step S3, after the oil tightness of the connection part is tested and determined, the other end of the connecting piece and the corresponding flange are welded together.
Therefore, according to the scheme provided by the invention, the connecting piece is designed on the throat-shaped flange, and after the throat-shaped lifting seat flange is reliably connected through the fastening piece, the flanges on two sides are welded through the connecting piece, so that the flange is prevented from being loosened due to operation vibration of the transformer.
In conclusion, the scheme provided by the invention increases the strength of the flange joint of the lifting seat, overcomes the influence of the running vibration of the transformer on the fastener, increases the connection reliability of the lifting seat and avoids the leakage accident at the joint of the laryngeal prominence lifting seat.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of an installation of a leakage-proof structure of a throat junction elevated seat of a phase-shifting transformer according to an embodiment of the present invention;
FIG. 2 is an assembly front view of a connecting member of a leak-proof structure of a throat junction elevated seat of a phase-shifting transformer and the throat junction elevated seat according to an embodiment of the present invention;
FIG. 3 is an assembled side view of a connecting member and a throat junction elevated seat of an anti-leakage structure of a throat junction elevated seat of a phase-shifting transformer according to an embodiment of the invention;
FIG. 4 is a front view of a connector of a leak-proof structure of a throat junction elevated seat of a phase-shifting transformer according to an embodiment of the present invention;
FIG. 5 is a side view of a connecting member of a leak-proof structure of a throat junction elevated seat of a phase-shifting transformer according to an embodiment of the invention;
FIG. 6 is a schematic view of a mounting portion of a leakage-preventing structure of a throat junction elevated seat of a phase-shifting transformer according to an embodiment of the present invention;
fig. 7 is a flow chart of a method for installing an anti-leakage structure of a throat junction elevated seat of a phase-shifting transformer according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a leakage-proof structure of a throat junction rising seat of a phase-shifting transformer in a first aspect. Fig. 1 is a schematic installation diagram of a leakage prevention structure of a throat junction elevated seat of a phase-shifting transformer according to an embodiment of the present invention, as shown in fig. 1, including: the pipe type pipe connecting device comprises a throat junction lifting seat 4, a fastening piece 5, a connecting piece 6 and a sealing washer 7, wherein the throat junction lifting seat 4 is of a circular pipe structure with flanges 41 at two ends, the sealing washer 7 is assembled between the flange 41 of the throat junction lifting seat and the corresponding flange for sealing and is fastened through the fastening piece, and two ends of the connecting piece 6 are respectively connected with the flange 41 of the throat junction lifting seat and the corresponding flange.
Specifically, the connecting member 6 is a structure similar to a 7 shape as shown in fig. 4 and 5.
In some embodiments, the connecting member 6 is an integral structure or a separate structure from the flange 41 of the laryngeal prominence.
In some embodiments, the connecting member 6 is one or more.
In some embodiments, a plurality of said connectors 6 are evenly distributed around the flange 41 of said throat lifter.
In some embodiments, the connector 6 is steel.
In some embodiments, the fastener 5 comprises a bolt, washer, nut.
The invention discloses a phase-shifting transformer in a second aspect. The phase-shifting transformer comprises the anti-leakage structure of the throat junction rising seat of the phase-shifting transformer in any one of the first aspect of the invention.
The third aspect of the invention discloses a method for installing an anti-leakage structure of a throat junction rising seat of a phase-shifting transformer, as shown in fig. 7, the method is used for installing the anti-leakage structure of the throat junction rising seat of the phase-shifting transformer in any one of the first aspect of the invention, and specifically comprises the following steps:
step S1, welding one end of the connecting piece 6 on the throat junction rising seat flange 41 in advance;
step S2, after the throat section rising seat welded with the connecting piece 6 is hoisted to an installation position, a sealing gasket 7 is assembled between the throat section rising seat flange 41 and a flange corresponding to the throat section rising seat flange for sealing, and the throat section rising seat flange is fastened and connected through a fastening piece;
and step S3, after the oil tightness of the connection part is tested and determined, welding the other end of the connecting piece 6 and the corresponding flange together.
Specifically, as shown in fig. 1, a first single-phase transformer 1, a second single-phase transformer 2, and a third single-phase transformer 3 are mounted on a predetermined ground and connected by a choke-type riser 4. As shown in the attached figures 2 and 3, a connecting piece 6 is welded at the designed position on the throat junction lifting seat flange 41, a sealing gasket 7 is assembled between the throat junction lifting seat flange 41 and the corresponding flange for sealing, then the flanges at two sides are connected together by a fastening piece 5 and are pre-tightened according to the regulation, the pre-tightening requirement of the sealing gasket is met, and the sealing effect is ensured. As shown in fig. 6, after testing and determining that the connecting position is oil-tight, the connecting piece 6 is welded with the flange on the other side, so that the connecting strength between the throat lifting seats 4 is increased, and the fastening piece 5 is protected from being loosened by vibration of the transformer to influence the sealing effect.
Specifically, the anti-leakage structure of the throat junction rising seat of the phase-shifting transformer comprises: the pipe type pipe connecting device comprises a throat junction lifting seat 4, a fastening piece 5, a connecting piece 6 and a sealing washer 7, wherein the throat junction lifting seat 4 is of a circular pipe structure with flanges 41 at two ends, the sealing washer 7 is assembled between the flange 41 of the throat junction lifting seat and the corresponding flange for sealing and is fastened through the fastening piece, and two ends of the connecting piece 6 are respectively connected with the flange 41 of the throat junction lifting seat and the corresponding flange.
In some embodiments, the connecting member 6 is a 7-like structure as shown in fig. 4 and 5.
In some embodiments, the connecting member 6 is an integral structure or a separate structure with the flange 41 of the laryngeal prominence base.
In some embodiments, the connecting member 6 is one or more.
In some embodiments, a plurality of said connectors 6 are evenly distributed around the flange 41 of said throat lifter.
In some embodiments, the connector 6 is steel.
In some embodiments, the fastener 5 comprises a bolt, washer, nut.
In conclusion, the scheme provided by the invention can increase the strength of the flange joint of the throat junction lifting seat of the transformer, overcomes the influence of the running vibration of the transformer on the fastener, increases the connection reliability of the lifting seat and avoids leakage accidents at the joint of the throat junction lifting seat.
It should be noted that the technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present description should be considered. The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (9)

1. The utility model provides a phase-shifting transformer throat knot rises seat and prevents leaking structure which characterized in that includes: the pipe type pipe joint comprises a throat joint lifting seat, fastening pieces, connecting pieces and sealing gaskets, wherein the throat joint lifting seat is of a circular pipe structure with flanges at two ends, the sealing gaskets are assembled between the flanges of the throat joint lifting seat and the corresponding flanges and used for sealing and fastened through the fastening pieces, and two ends of each connecting piece are respectively connected with the flanges of the throat joint lifting seat and the corresponding flanges.
2. The anti-leakage structure for the throat junction rising seat of the phase-shifting transformer according to claim 1, wherein the connecting piece is of a 7-like structure.
3. The anti-leakage structure of the throat junction rising seat of the phase-shifting transformer according to claim 2, wherein the connecting piece and the flange of the throat junction rising seat are of an integral structure or a split structure.
4. The anti-leakage structure for the throat junction elevated seat of the phase-shifting transformer according to claim 3, wherein the number of the connecting pieces is one or more.
5. The anti-leakage structure for the throat junction elevated seat of the phase-shifting transformer according to claim 4, wherein a plurality of the connecting pieces are uniformly distributed around the flange of the throat junction elevated seat.
6. The phase-shifting transformer throat junction rising seat leakage prevention structure according to any one of claim 5, wherein the connecting piece is made of steel.
7. The leakage-proof structure for the throat junction elevated seat of the phase-shifting transformer as claimed in claim 1, wherein the fastening member comprises a bolt, a washer and a nut.
8. A phase-shifting transformer, characterized in that it comprises a leakage-proof structure for a throat junction elevated seat of a phase-shifting transformer according to any one of claims 1 to 7.
9. A method for installing an anti-leakage structure of a throat junction rising seat of a phase-shifting transformer, which is characterized in that the method is used for installing the anti-leakage structure of the throat junction rising seat of the phase-shifting transformer as claimed in any one of claims 1 to 7, and specifically comprises the following steps:
step S1, welding one end of a connecting piece on the throat section lifting seat flange in advance;
step S2, after the throat section rising seat welded with the connecting piece is hoisted to an installation position, a sealing gasket is assembled between the throat section rising seat flange and a flange corresponding to the throat section rising seat flange for sealing, and the throat section rising seat flange and the flange are fastened and connected through a fastening piece;
and step S3, after the oil tightness of the connection part is tested and determined, the other end of the connecting piece and the corresponding flange are welded together.
CN202210191424.5A 2022-02-28 2022-02-28 Anti-leakage structure of throat junction lifting seat of phase-shifting transformer and mounting method Pending CN114738573A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210191424.5A CN114738573A (en) 2022-02-28 2022-02-28 Anti-leakage structure of throat junction lifting seat of phase-shifting transformer and mounting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210191424.5A CN114738573A (en) 2022-02-28 2022-02-28 Anti-leakage structure of throat junction lifting seat of phase-shifting transformer and mounting method

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006108401A (en) * 2004-10-06 2006-04-20 Hitachi Engineering & Services Co Ltd Transformer
CN204464020U (en) * 2015-04-14 2015-07-08 保定天威集团特变电气有限公司 A kind of rectifier transformer valve side terminal deriving structure
CN105715889A (en) * 2016-04-14 2016-06-29 安庆宜源石油机械配件制造有限责任公司 Seepage preventing flange connecting piece
CN209544115U (en) * 2019-04-25 2019-10-25 吴江变压器有限公司 A kind of connection structure of the raising seat and fuel tank of reactor or transformer
US20190360590A1 (en) * 2016-12-21 2019-11-28 Forschungszentrum Juelich Gmbh Mounting device for a flat seal of a flange connection
CN213018229U (en) * 2020-08-11 2021-04-20 苏州青和环境科技有限公司 Pipeline connecting device for steam-water separator
CN217683761U (en) * 2022-02-28 2022-10-28 保定天威保变电气股份有限公司 Leak-proof structure of throat junction rising seat of phase-shifting transformer and phase-shifting transformer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006108401A (en) * 2004-10-06 2006-04-20 Hitachi Engineering & Services Co Ltd Transformer
CN204464020U (en) * 2015-04-14 2015-07-08 保定天威集团特变电气有限公司 A kind of rectifier transformer valve side terminal deriving structure
CN105715889A (en) * 2016-04-14 2016-06-29 安庆宜源石油机械配件制造有限责任公司 Seepage preventing flange connecting piece
US20190360590A1 (en) * 2016-12-21 2019-11-28 Forschungszentrum Juelich Gmbh Mounting device for a flat seal of a flange connection
CN209544115U (en) * 2019-04-25 2019-10-25 吴江变压器有限公司 A kind of connection structure of the raising seat and fuel tank of reactor or transformer
CN213018229U (en) * 2020-08-11 2021-04-20 苏州青和环境科技有限公司 Pipeline connecting device for steam-water separator
CN217683761U (en) * 2022-02-28 2022-10-28 保定天威保变电气股份有限公司 Leak-proof structure of throat junction rising seat of phase-shifting transformer and phase-shifting transformer

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