CN111193218B - A three-phase common box busbar turning structure and GIS - Google Patents
A three-phase common box busbar turning structure and GIS Download PDFInfo
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- CN111193218B CN111193218B CN201911328672.4A CN201911328672A CN111193218B CN 111193218 B CN111193218 B CN 111193218B CN 201911328672 A CN201911328672 A CN 201911328672A CN 111193218 B CN111193218 B CN 111193218B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0358—Connections to in or out conductors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
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Abstract
本发明涉及一种三相共箱母线拐弯结构及GIS。该拐弯结构包括第一筒体、第二筒体、绝缘子、第一触座组件和第二触座组件，两筒体用于连接两个平行设置的母线筒；两筒体上均设有母线筒接口，母线筒接口处设有外接法兰；两筒体上设有连接法兰，两筒体通过连接法兰固定；两筒体的母线筒接口朝向相反，两筒体各自的外接法兰的轴线与连接法兰的轴线垂直；绝缘子设置在两筒体的连接处；两触座组件均包括A相触座、B相触座和C相触座，两触座组件中的三个触座安装在绝缘子上，两触座组件中的三个触座设有朝向母线筒接口的导体连接端；两触座组件中的触座对应导电连接。该拐弯结构用于解决现有技术中用于实现GIS中母线拐弯的三相分箱母线占用空间大的问题。
The invention relates to a three-phase common box bus bar turning structure and GIS. The turning structure includes a first cylinder, a second cylinder, an insulator, a first contact base assembly and a second contact base assembly, and the two cylinders are used to connect two parallel busbars; both cylinders are provided with busbars There is an external flange at the interface of the busbar; the two cylinders are provided with a connecting flange, and the two cylinders are fixed by the connecting flange; the busbar interfaces of the two cylinders face opposite, and the external flanges of the two cylinders are respectively The axis of the connecting flange is perpendicular to the axis of the connecting flange; the insulator is arranged at the connection of the two cylinders; the two contact base assemblies include A-phase contact base, B-phase contact base and C-phase contact base, and three contact bases in the two-contact base assembly The seat is installed on the insulator, the three contact seats in the two contact seat assemblies are provided with conductor connection ends facing the busbar barrel interface; the contact seats in the two contact seat assemblies correspond to conductive connections. The turning structure is used to solve the problem of the large space occupied by the three-phase sub-box busbar used for realizing the turning of the busbar in the GIS in the prior art.
Description
Technical Field
The invention relates to a three-phase common-box bus turning structure and a GIS (gas insulated switchgear).
Background
Gas insulated metal enclosed switchgear (GIS for short) is one of the most important power transmission and distribution equipment in the electric wire netting, and GIS includes the generating line, and the generating line adopts three-phase case generating line altogether usually, and in order not to have a power failure when the generating line trouble-shooting, GIS can select two segmentation wiring forms of double bus.
As shown in fig. 1-4, the double-busbar and double-section wiring form is that two main busbars which are parallel and in the same plane are arranged in a GIS, wherein one main busbar comprises a first main busbar section 1 and a second main busbar section 2, the other main busbar comprises a third main busbar section 3 and a fourth main busbar section 4, the first main busbar section 1 and the second main busbar section 2 are connected through a first section partition 5, a first connecting busbar 13, a second connecting busbar 14 and three-phase box-divided busbars 8, and the third main busbar section 3 and the fourth main busbar section 4 are connected through a second section partition 6, a third connecting busbar 15, a fourth connecting busbar 16 and three-phase box-divided busbars 8; the first main bus segment 1, the second main bus segment 2, the third main bus segment 3, the fourth main bus segment 4, the first connecting bus 13, the second connecting bus 14, the third connecting bus 15 and the fourth connecting bus 16 are all three-phase common-box buses.
As shown in fig. 1-4, the first sectional partition 5 includes a first sectional partition incoming bus 9 and a first sectional partition outgoing bus 10, both the first sectional partition incoming bus 9 and the first sectional partition outgoing bus 10 are three-phase common-box buses, electrical equipment such as a disconnecting switch, a grounding switch, a circuit breaker, a current transformer and a voltage transformer is connected between the first sectional partition incoming bus 9 and the first sectional partition outgoing bus 10, the first main bus section 1, the first sectional partition incoming bus 9, the first sectional partition outgoing bus 10, the first connecting bus 13, the second connecting bus 14 and the second main bus section 2 are in the same horizontal plane, the first main bus section 1, the first sectional partition incoming bus 9, the second connecting bus 14 and the second main bus section 2 are coaxial, the first sectional partition outgoing bus 10 and the first connecting bus 13 are coaxial, the first connecting bus 13 and the second connecting bus 14 are arranged in parallel, three-phase conductors in the first connecting bus 13 are connected with three-phase conductors in the second connecting bus 14 through three-phase box-separating buses 8, and when the three-phase box-separating bus-separating.
As shown in fig. 1-4, the second block 6 includes a second block incoming bus 11 and a second block outgoing bus 12, both the second block incoming bus 11 and the second block outgoing bus 12 are three-phase common-box buses, an electrical device such as a disconnector, a grounding switch, a circuit breaker, a current transformer and a voltage transformer is connected between the second block incoming bus 11 and the second block outgoing bus 12, the third main bus segment 3, the third connecting bus 15, the fourth connecting bus 16, the second block incoming bus 11, the second block outgoing bus 12 and the fourth main bus segment 4 are in the same plane, the third main bus segment 3, the third connecting bus 15, the second block outgoing bus 12 and the fourth main bus segment 4 are coaxial, the fourth connecting bus 16 and the second block incoming bus 11 are coaxial, the third connecting bus 15 and the fourth connecting bus 16 are arranged in parallel, three-phase conductors in the third connecting bus 15 are connected with three-phase conductors in the fourth connecting bus 16 through three-phase box-dividing buses 8, and when the three-phase box-dividing bus-.
In the double-busbar and double-section wiring mode, the first connecting busbar 13 is not arranged and is directly connected with the second main busbar section 2 through the three-phase box-divided busbars 8, because the three-phase box-divided busbars 8 need to occupy a certain space downwards, an operating mechanism of an isolating switch in the second section interval 6 can be blocked, and the operation and maintenance of the operating mechanism can be influenced; similarly, the fourth connecting bus 16 is not provided and is directly connected with the third main bus segment 3 through the three-phase box buses 8, and the three-phase box buses 8 need to occupy a certain space downwards, so that the operating mechanism of the isolating switch in the first segment interval 5 can be blocked, and the operation and maintenance of the operating mechanism can be influenced; in summary, in the prior art, it is impossible to eliminate the second connecting bus 14 and the third connecting bus 15, connect the first connecting bus 13 with the second main bus segment 2, and connect the fourth connecting bus 16 with the third main bus segment 3, so that only two spacing spaces for arranging the first segment space 5 and the second segment space 6 are provided in the axial direction of the main bus, but three spacing spaces for arranging the first segment space 5, each connecting bus and the second segment space 6 respectively must be provided, which results in a longer total length of the main bus and a larger floor space of the GIS.
Disclosure of Invention
The invention aims to provide a three-phase common-box bus turning structure which is used for solving the problem that a three-phase box-separated bus used for turning a bus in a GIS in the prior art occupies a large space; the invention also provides a GIS using the three-phase common-box bus turning structure, which is used for solving the problem that the GIS using a double-bus double-subsection connecting line form in the prior art occupies a larger area.
The three-phase common-box bus turning structure provided by the invention adopts the following technical scheme:
this three-phase is total to case generating line structure of turning round includes:
the first barrel and the second barrel are used for connecting two bus barrels which are arranged in parallel;
bus tube interfaces for connecting bus tubes are arranged on the first tube body and the second tube body respectively, external flanges are arranged at the bus tube interfaces, and the two tube bodies are connected with the two parallel bus tubes through the external flanges respectively;
the first cylinder and the second cylinder are both provided with connecting flanges, and the two cylinders are fixed through the connecting flanges;
the bus tube interfaces of the two tube bodies face opposite directions, and the axes of the external flanges of the two tube bodies are vertical to the axis of the connecting flange;
the insulator is arranged at the joint of the two cylinders;
the first contact seat assembly and the second contact seat assembly respectively comprise an A-phase contact seat, a B-phase contact seat and a C-phase contact seat, three contact seats in the two contact seat assemblies are respectively arranged on the insulator, three contact seats in the two contact seat assemblies are respectively provided with a conductor connecting end used for being in conductive connection with a three-phase conductor in a corresponding bus tube, and the conductor connecting end of each contact seat faces to a corresponding bus tube interface;
three contact seats in the first contact seat assembly and three contact seats in the second contact seat assembly are located on two sides of the insulator in the axial direction of the insulator, and the three contact seats in the first contact seat assembly and the three contact seats in the second contact seat assembly are in one-to-one correspondence and are in conductive connection.
The three-phase common-box bus turning structure provided by the invention has the beneficial effects that: the turning structure is used for replacing three-phase box-separated buses and connecting buses which are connected with main bus sections and section intervals in the prior art, and is in a three-phase box-shared form, so that the space occupied in the vertical direction is small, and when the turning structure is connected into one main bus, the turning structure can be arranged in the interval direction of two main buses with the section intervals in adjacent main buses, and the operation and the maintenance of an isolating switch operating mechanism in the section intervals of the adjacent main buses cannot be influenced.
Furthermore, be equipped with the electrically conductive inserts of A looks, the electrically conductive inserts of B looks and the electrically conductive inserts of C looks on the insulator, three electrically conductive inserts run through the insulator along the axial of insulator, two A touch the seat all with the electrically conductive connection of the electrically conductive inserts of A looks in order to realize two A looks touch the electrically conductive connection of seat, two B touch the seat all with the electrically conductive inserts electrically conductive connection of B looks touch the electrically conductive connection of seat in order to realize two B looks touch the electrically conductive connection of seat, two C touch the seat all with the electrically conductive inserts electrically conductive connection of C looks in order to realize two C looks touch the electrically conductive connection of seat. The three contact seats in the first contact seat assembly and the three contact seats in the second contact seat assembly are in conductive connection.
Furthermore, each touch seat is of a hollow structure, each touch seat is fixed on the corresponding conductive insert through a threaded fastener, a through hole for the threaded fastener to pass through is formed in the end portion, close to the corresponding conductive insert, of each touch seat, a threaded hole matched with the threaded fastener is formed in each conductive insert, the threaded fastener passes through the through hole in the inner cavity of the touch seat and is screwed into the threaded hole to fix the touch seat on the conductive insert, and an operation hole for the matching tool to extend into the inner cavity of the touch seat and to screw the threaded fastener is formed in each touch seat. By the arrangement, each contact seat is installed on the insulator, and meanwhile, the conductive connection between each contact seat and the corresponding conductive insert is realized, so that the connection structure between each contact seat and the insulator is simplified, and the structural complexity of the turning structure is reduced.
Furthermore, the opening edge of the perforation hole opening of each contact seat is provided with an annular bulge extending around the opening edge, the conductive insert is provided with a groove matched with the annular bulge on the contact seat in a positioning way, and the threaded hole on the conductive insert is arranged at the bottom of the groove. The through holes on the contact seat are aligned to the threaded holes on the conductive inserts, and the assembly efficiency of the turning structure can be improved.
Furthermore, one of the contact seat and the corresponding conductive insert is provided with at least two limiting columns extending along the axial direction of the insulator, and the other one of the contact seat and the corresponding conductive insert is provided with at least two limiting grooves in limiting fit with the limiting columns, so that the relative positions of the contact seat and the insulator are limited when the limiting columns are inserted into the limiting grooves. The arrangement ensures that the conductor connecting ends of the contact bases are opposite to the corresponding conductors after the contact bases are fixed on the conductive insert, so that the contact bases are in conductive connection with the corresponding conductors.
Furthermore, each contact seat is of a hollow structure. Set up like this, reduced the consumptive material that touches the seat, alleviateed the weight that touches the seat simultaneously to there is good heat-sinking capability.
Furthermore, each contact seat comprises a conductor connecting section and an insulator connecting section, wherein the conductor connecting section is used for being in conductive connection with a corresponding conductor in a corresponding bus tube, the insulator connecting section is used for being connected with an insulator, the conductor connecting section is perpendicular to the insulator connecting section, and the end part of the conductor connecting section facing the corresponding conductor forms the conductor connecting end. This form of contact base is relatively simple in construction.
The GIS provided by the invention adopts the following technical scheme:
the GIS includes:
two main bus bars arranged in parallel at intervals, wherein one main bus bar comprises a first main bus bar section and a second main bus bar section, the other main bus bar comprises a third main bus bar section and a fourth main bus bar section, the first main bus bar section and the second main bus bar section are coaxial and arranged at intervals, and the third main bus bar section and the fourth main bus bar section are coaxial and arranged at intervals:
the first section interval is connected between the first main bus section and the second main bus section and comprises a first section interval inlet bus and a first section interval outlet bus, and the first section interval inlet bus is parallel to the first section interval outlet bus;
the second section interval is connected between the third main bus section and the fourth main bus section and comprises a second section interval inlet bus and a second section interval outlet bus, and the second section interval inlet bus is parallel to the second section interval outlet bus;
the three-phase common-box bus turning structure comprises two three-phase common-box bus turning structures, wherein one three-phase common-box bus turning structure is connected between a first main bus section and a second main bus section and is a first three-phase common-box bus turning structure, and the other three-phase common-box bus turning structure is connected between a third main bus section and a fourth main bus section and is a second three-phase common-box bus turning structure; the three-phase common-box bus turning structure comprises a first cylinder, a second cylinder, an insulator, a first contact assembly and a second contact assembly, wherein the first cylinder and the second cylinder are used for connecting two bus cylinders which are arranged in parallel, bus cylinder interfaces used for connecting the bus cylinders are arranged on the first cylinder and the second cylinder respectively, external flanges are arranged at the bus cylinder interfaces, the two cylinders are respectively connected with the two bus cylinders which are arranged in parallel through the external flanges, connecting flanges are arranged on the first cylinder and the second cylinder respectively, the two cylinders are fixed through the connecting flanges, the bus cylinder interfaces of the two cylinders face opposite directions, and the axes of the external flanges of the two cylinders are perpendicular to the axis of the connecting flanges; the insulator is arranged at the joint of the two cylinders; the first contact seat assembly and the second contact seat assembly respectively comprise an A-phase contact seat, a B-phase contact seat and a C-phase contact seat, three contact seats in the two contact seat assemblies are respectively arranged on the insulator, three contact seats in the two contact seat assemblies are respectively provided with a conductor connecting end used for being in conductive connection with a three-phase conductor in a corresponding bus tube, the conductor connecting end of each contact seat faces to a corresponding bus tube interface, the three contact seats in the first contact seat assembly and the three contact seats in the second contact seat assembly are positioned on two sides of the insulator in the axial direction of the insulator, and the three contact seats in the first contact seat assembly and the three contact seats in the second contact seat assembly are in one-to-one correspondence and in conductive connection;
the axes of a first main bus section, a second main bus section, a third main bus section, a fourth main bus section, a first section interval inlet bus, a first section interval outlet bus, a second section interval inlet bus, a second section interval outlet bus and each external flange in the turning structure of the two three-phase common-box buses are in the same plane;
the first main bus section is fixedly connected with one external flange in the first three-phase common-box bus turning structure, the other external flange in the first three-phase common-box bus turning structure is fixedly connected with the first section interval inlet bus, the first section interval outlet bus is fixedly connected with the second main bus section, and the first main bus section, the first section interval outlet bus and the external flange in the first three-phase common-box bus turning structure, which is connected with the first main bus section, are coaxial;
the third main bus section is fixedly connected with the second section interval inlet bus, the second section interval outlet bus is fixedly connected with an external flange in the second three-phase common-box bus turning structure, the other external flange in the second three-phase common-box bus turning structure is fixedly connected with the fourth main bus section, and the third main bus section, the second section interval inlet bus and the external flange connected with the fourth main bus section in the second three-phase common-box bus turning structure are coaxial;
the first section interval and the second three-phase common-box bus turning structure connected with the fourth main bus in a segmented mode are arranged in the direction of the interval of the two main buses, and the second section interval and the first three-phase common-box bus turning structure connected with the first main bus in a segmented mode are arranged in the direction of the interval of the two main buses.
The GIS provided by the invention has the beneficial effects that: the three-phase common-box bus turning structure is used in the GIS to replace three-phase branch box buses and connecting buses which connect main bus sections and section intervals in the prior art, because the turning structure is in a three-phase common-box form, the space occupied vertically is small, when the turning structure is connected into one main bus, the turning structure can be distributed in the interval direction of two main buses with the section intervals in adjacent main buses, the operation and the maintenance of an isolating switch operating mechanism in the section intervals of the adjacent main buses cannot be influenced, and then the GIS can be enabled to be only provided with the interval spaces which are respectively used for arranging two section intervals in the two main buses in the axial direction of the main buses, so that the total length of the main buses is shortened, and the occupied area of the GIS is reduced.
Furthermore, be equipped with the electrically conductive inserts of A looks, the electrically conductive inserts of B looks and the electrically conductive inserts of C looks on the insulator, three electrically conductive inserts run through the insulator along the axial of insulator, two A touch the seat all with the electrically conductive connection of the electrically conductive inserts of A looks in order to realize two A looks touch the electrically conductive connection of seat, two B touch the seat all with the electrically conductive inserts electrically conductive connection of B looks touch the electrically conductive connection of seat in order to realize two B looks touch the electrically conductive connection of seat, two C touch the seat all with the electrically conductive inserts electrically conductive connection of C looks in order to realize two C looks touch the electrically conductive connection of seat. The three contact seats in the first contact seat assembly and the three contact seats in the second contact seat assembly are in conductive connection.
Furthermore, each touch seat is of a hollow structure, each touch seat is fixed on the corresponding conductive insert through a threaded fastener, a through hole for the threaded fastener to pass through is formed in the end portion, close to the corresponding conductive insert, of each touch seat, a threaded hole matched with the threaded fastener is formed in each conductive insert, the threaded fastener passes through the through hole in the inner cavity of the touch seat and is screwed into the threaded hole to fix the touch seat on the conductive insert, and an operation hole for the matching tool to extend into the inner cavity of the touch seat and to screw the threaded fastener is formed in each touch seat. By the arrangement, each contact seat is installed on the insulator, and meanwhile, the conductive connection between each contact seat and the corresponding conductive insert is realized, so that the connection structure between each contact seat and the insulator is simplified, and the structural complexity of the turning structure is reduced.
Furthermore, the opening edge of the perforation hole opening of each contact seat is provided with an annular bulge extending around the opening edge, the conductive insert is provided with a groove matched with the annular bulge on the contact seat in a positioning way, and the threaded hole on the conductive insert is arranged at the bottom of the groove. The through holes on the contact seat are aligned to the threaded holes on the conductive inserts, and the assembly efficiency of the turning structure can be improved.
Furthermore, one of the contact seat and the corresponding conductive insert is provided with at least two limiting columns extending along the axial direction of the insulator, and the other one of the contact seat and the corresponding conductive insert is provided with at least two limiting grooves in limiting fit with the limiting columns, so that the relative positions of the contact seat and the insulator are limited when the limiting columns are inserted into the limiting grooves. The arrangement ensures that the conductor connecting ends of the contact bases are opposite to the corresponding conductors after the contact bases are fixed on the conductive insert, so that the contact bases are in conductive connection with the corresponding conductors.
Furthermore, each contact seat is of a hollow structure. Set up like this, reduced the consumptive material that touches the seat, alleviateed the weight that touches the seat simultaneously to there is good heat-sinking capability.
Furthermore, each contact seat comprises a conductor connecting section and an insulator connecting section, wherein the conductor connecting section is used for being in conductive connection with a corresponding conductor in a corresponding bus tube, the insulator connecting section is used for being connected with an insulator, the conductor connecting section is perpendicular to the insulator connecting section, and the end part of the conductor connecting section facing the corresponding conductor forms the conductor connecting end. This form of contact base is relatively simple in construction.
Drawings
FIG. 1 is a schematic diagram of a dual bus dual segment connection as described in the background of the invention;
FIG. 2 is a cross-sectional view A-A of the structure of FIG. 1;
FIG. 3 is a cross-sectional view B-B of the structure of FIG. 1;
FIG. 4 is a cross-sectional view C-C of the structure of FIG. 1;
FIG. 5 is a schematic diagram of a dual bus bar, dual segment connection in an embodiment of a GIS provided by the present invention;
FIG. 6 is a D-D cross-sectional view of the structure of FIG. 5;
FIG. 7 is a cross-sectional view E-E of the structure of FIG. 5;
fig. 8 is a schematic structural diagram of a first corner structure in an embodiment of a GIS provided by the present invention;
FIG. 9 is a cross-sectional view F-F of the structure of FIG. 8;
fig. 10 is a schematic structural diagram of a B-phase contact in an embodiment of the GIS provided in the present invention.
In the figure: 1-a first main busbar section, 2-a second main busbar section, 3-a third main busbar section, 4-a fourth main busbar section, 5-a first section interval, 6-a second section interval, 8-a three-phase box bus, 9-a first section interval incoming bus, 10-a first section interval outgoing bus, 11-a second section interval incoming bus, 12-a second section interval outgoing bus, 13-a first connecting bus, 14-a second connecting bus, 15-a third connecting bus, 16-a fourth connecting bus, 17-a first main busbar section, 18-a second main busbar section, 19-a third main busbar section, 20-a fourth main busbar section, 21-a first turning structure, 22-a first section interval, 23-a second section interval, 24-connecting bus, 25-second turning structure, 26-second sectional interval inlet bus, 27-second sectional interval outlet bus, 28-first sectional interval inlet bus, 29-first sectional interval outlet bus, 30-first cylinder, 31-second cylinder, 32-insulator, 33-first external flange, 34-first connecting flange, 35-second external flange, 36-second connecting flange, 37-A contact seat, 38-B contact seat, 39-C contact seat, 40-fastening bolt, 41-through hole, 42-annular bulge, 43-fixed pin hole, 44-operating hole, 45-conductor connecting section, 46-insulator connecting section and 47-transition section.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The embodiment of the GIS provided by the invention comprises the following steps:
the GIS includes two main busbars arranged in parallel at intervals and in the same horizontal plane, as shown in fig. 5-7, one of the main busbars includes a first main busbar segment 17 and a second main busbar segment 18, the other main busbar includes a third main busbar segment 19 and a fourth main busbar segment 20, the first main busbar segment 17 and the second main busbar segment 18 are arranged coaxially and at intervals, the third main busbar segment 19 and the fourth main busbar segment 20 are arranged coaxially and at intervals, a first turning structure 21 and a first segment interval 22 are connected in series between the first main busbar segment 17 and the second main busbar segment 18, and a second turning structure 25 and a second segment interval 23 are connected in series between the third main busbar segment 19 and the fourth main busbar segment 20.
As shown in fig. 5-7, the first sectional partition 22 includes a first sectional partition incoming bus 28 and a first sectional partition outgoing bus 29 which are arranged in parallel, and electrical devices such as a circuit breaker, an isolating switch, a grounding switch, a current transformer, a voltage transformer and the like are connected in series between the first sectional partition incoming bus 28 and the first sectional partition outgoing bus 29; the second block 23 includes a second block incoming bus 26 and a second block outgoing bus 27, which are arranged in parallel, and electrical devices such as a circuit breaker, a disconnecting switch, an earthing switch, a current transformer, a voltage transformer, etc. are connected in series between the second block incoming bus 26 and the second block outgoing bus 27.
As shown in fig. 8, the first turning structure 21 includes a first cylinder 30 and a second cylinder 31, the first cylinder 30 and the second cylinder 31 are both T-shaped, two cylinder openings of the first cylinder 30 are respectively provided with a first external flange 33 and a first connecting flange 34, axes of the first external flange 33 and the first connecting flange 34 are coplanar and perpendicular, two cylinder openings of the second cylinder 31 are respectively provided with a second external flange 35 and a second connecting flange 36, and axes of the second external flange 35 and the second connecting flange 36 are coplanar and perpendicular; the first turning structure 21 further comprises an insulator 32, the insulator 32 is integrally disc-shaped, corresponding bolt through holes are formed in the first connecting flange 34 of the first cylinder 30, the second connecting flange 36 of the second cylinder 31 and the insulator 32 so as to realize the fixed connection of the first cylinder 30, the second cylinder 31 and the insulator 32 through matched bolts, and the insulator 32 is located between the first connecting flange 34 of the first cylinder 30 and the second connecting flange 36 of the second cylinder 31; after the first cylinder 30 and the second cylinder 31 are connected, the axes of the first connecting flange 34 of the first cylinder 30, the second connecting flange 36 of the second cylinder 31 and the insulator 32 are collinear, and the direction of the nozzle on the first cylinder 30 for arranging the first external flange 33 is opposite to the direction of the nozzle on the second cylinder 31 for arranging the second external flange 35; when the first external flange 33 on the first cylinder 30 and the second external flange 35 on the second cylinder 31 are used, two bus cylinders arranged in parallel can be connected, and the cylinder ports of the external flanges arranged on the first cylinder 30 and the second cylinder 31 form a bus cylinder interface.
As shown in fig. 8 and 9, three contact seats, namely an a-phase contact seat 37, a B-phase contact seat 38 and a C-phase contact seat 39, are respectively installed on the side surfaces of the insulator 32 facing the first cylinder 30 and the second cylinder 31, three conductive inserts (not shown in the figure), namely an a-phase conductive insert, the three conductive inserts penetrate through the insulator 32 along the axial direction of the insulator 32, the A-phase contact seats 37 in the first cylinder 30 and the second cylinder 31 are respectively and fixedly connected to two ends of the A-phase conductive insert and are in conductive connection with the A-phase conductive insert, the B-phase contact seats 38 in the first cylinder 30 and the second cylinder 31 are respectively and fixedly connected to two ends of the B-phase conductive insert and are in conductive connection with the B-phase conductive insert, and the C-phase contact seats 39 in the first cylinder 30 and the second cylinder 31 are respectively and fixedly connected to two ends of the C-phase conductive insert and are in conductive connection with the C-phase conductive insert; the three contact seats in the first cylinder 30 form a first contact seat assembly, and the three contact seats in the second cylinder 31 form a second contact seat assembly.
The three contact seats in the first cylinder 30 and the six contact seats such as the three contact seats in the second cylinder 31 have the same structural form except that the sizes are slightly different, the structure of each contact seat is described below by a B-phase contact seat 38, as shown in fig. 8-10, the B-phase contact seat 38 comprises a conductor connecting section 45, the conductor connecting section 45 is in conductive connection with a B-phase conductor in a bus cylinder connected with the first turning structure 21, the B-phase contact seat 38 further comprises an insulator connecting section 46 and a transition section 47 connecting the insulator connecting section 46 with the conductor connecting section 45, and the axis of the conductor connecting section 45 is perpendicular to the axis of the insulator connecting section 46; the B-phase contact base 38 is of a hollow structure, and a spring contact finger and a guide ring are arranged in an inner cavity corresponding to the conductor connecting section 45 and are used for being in conductive connection with a corresponding B-phase conductor; the insulator connecting section 46 is provided at its end with a through hole 41, the axis of the through hole 41 extending in the axial direction of the insulator 32, at the rim of the through hole 41 facing the aperture of the insulator 32 there is provided an annular projection 42 arranged around the rim, a groove for inserting the annular bulge 42 is arranged at the corresponding position of the B-phase conductive insert on the insulator 32, a threaded blind hole is arranged at the bottom of the groove, when the B-phase contact seat 38 is installed, the annular projection 42 of the phase B contact block 38 is inserted into the groove of the phase B conductive insert such that the through hole 41 of the phase B contact block 38 is aligned with the blind threaded hole of the phase B conductive insert, and the fastening bolt 40 is screwed into the threaded blind hole after passing through the through hole 41 to fix the B-phase contact base 38 on the B-phase conductive insert, an operation hole 44 for a matched tool to extend into the inner cavity of the B-phase contact base 38 is formed in the transition section 47, and the matched tool is used for screwing the fastening bolt 40 after extending into the inner cavity of the B-phase contact base 38; the fastening bolt 40 constitutes a threaded fastener.
After each contact seat is fixed on the corresponding conductive insert, the axis of the conductor connecting section 45 of each contact seat is parallel to the axis of the corresponding external flange and faces the corresponding bus cylinder interface, and the axis of the insulator connecting section 46 of each contact seat is parallel to the axis of the corresponding connecting flange; the end of the conductor connecting section 45 facing the corresponding conductor forms a conductor connection.
As shown in fig. 10, in order to ensure that the conductor connecting section 45 of the B-phase contact base 38 is coaxially corresponding to the corresponding B-phase conductor after being fixed on the B-phase conductive insert, two pin fixing holes 43 are formed in the end portion of the insulator connecting section 46 at two sides of the through hole 41, a positioning pin (not shown in the figure) is fixedly inserted into the pin fixing hole 43, a limiting groove for inserting the positioning pin is formed in the corresponding position of the B-phase conductive insert, and the relative position relationship between the B-phase contact base 38 and the insulator 32 is ensured by inserting the positioning pin into the limiting groove; the positioning pin is inserted into the pin fixing hole 43 to form a limit column arranged on the contact base.
The structure of the second corner structure 25 is the same as that of the first corner structure 21, and will not be described herein.
As shown in fig. 5 to 8, the connection relationship of the first main bus bar segment 17, the first turning structure 21, the first segment interval 22 and the second main bus bar segment 18 is as follows: one end of the cylinder of the first main bus segment 17, which faces the second main bus segment 18, is fixedly connected with a first external flange 33 of a first cylinder 30 in the first turning structure 21, and three-phase conductors in the first main bus segment 17 are respectively in corresponding conductive connection with three-phase contact seats in the first cylinder 30 in the first turning structure 21; a second external flange 35 of a second cylinder 31 in the first turning structure 21 is fixedly connected with a cylinder of a first section interval inlet bus 28 of a first section interval 22, and a three-phase contact seat in the second cylinder 31 is correspondingly and conductively connected with a three-phase conductor in the first section interval inlet bus 28; the cylinder of the first sectional leading-out bus 29 is fixedly connected with the cylinder of the second main bus section 18, and the three-phase conductor in the first sectional leading-out bus 29 is correspondingly connected with the three-phase conductor in the second main bus section 18 in a conductive manner.
As shown in fig. 5 to 7, the axes of the first main bus bar segment 17, the first external flange 33 of the first cylinder 30 in the first turning structure 21, the second external flange 35 of the second cylinder 31 in the first turning structure 21, the first segment spaced inlet bus bar 28, the first segment spaced outlet bus bar 29 and the second main bus bar segment 18 are in the same horizontal plane, and the axes of the first main bus bar segment 17, the first external flange 33 of the first cylinder 30 in the first turning structure 21, the first segment spaced outlet bus bar 29 and the second main bus bar segment 18 are collinear.
As shown in fig. 5-8, the connection relationship of the third main bus bar segment 19, the second segment spacing 23, the second turning structure 25 and the fourth main bus bar segment 20 is: one end of the cylinder of the third main bus bar segment 19, which faces the fourth main bus bar segment 20, is fixedly connected with the cylinder of the second segment interval incoming bus bar 26 in the second segment interval 23, and the three-phase conductor in the third main bus bar segment 19 is correspondingly in conductive connection with the three-phase conductor in the second segment interval incoming bus bar 26; one end of the second sectional interval outgoing end bus 27 facing the fourth main bus section 20 in the second sectional interval 23 is fixedly connected with a connecting bus 24, a cylinder of the second sectional interval outgoing end bus 27 is fixedly connected with a cylinder of the connecting bus 24, and a three-phase conductor in the second sectional interval outgoing end bus 27 is correspondingly in conductive connection with a three-phase conductor in the connecting bus 24; one end, facing the fourth main bus segment 20, of the cylinder of the connecting bus 24 is fixedly connected with a first external flange of a first cylinder in the second turning structure 25, and a three-phase conductor in the connecting bus 24 is in corresponding conductive connection with a three-phase contact seat in the first cylinder in the second turning structure 25; the second external flange of the second cylinder in the second turning structure 25 is fixedly connected with the cylinder of the fourth main bus segment 20, and the three-phase contact base in the second cylinder in the second turning structure 25 is correspondingly and conductively connected with the three-phase conductor in the fourth main bus segment 20.
As shown in fig. 5-7, the axes of the third main bus bar segment 19, the second segment spaced inlet end bus bar 26, the second segment spaced outlet end bus bar 27, the connecting bus bar 24, the first external flange of the first cylinder in the second turning structure 25, the second external flange of the second cylinder in the second turning structure 25, and the fourth main bus bar segment 20 are in the same horizontal plane, and the axes of the third main bus bar segment 19, the second segment spaced inlet end bus bar 26, the second external flange of the second cylinder in the second turning structure 25, and the fourth main bus bar segment 20 are collinear.
As shown in fig. 5, the first turning structure 21 and the second sectional partition 23 are correspondingly arranged in the direction of the interval between the two main bus bars, and the first sectional partition 22 and the second turning structure 25 are correspondingly arranged in the direction of the interval between the two main bus bars.
In the GIS in this embodiment, only two partition spaces for arranging the first segment space 22 and the second segment space 23 are provided, so that the total length of the main bus bar is short, and the occupied area of the GIS is small.
In the above embodiment, the insulators in the first turning structure and the second turning structure are sandwiched between the first connecting flange of the first cylinder and the second connecting flange of the second cylinder. In other embodiments, the first connecting flange of the first cylinder and the second connecting flange of the second cylinder can be directly fixed together, and the insulator is fixed inside the connecting position of the first connecting flange and the second connecting flange, and the same can be used.
In the above embodiment, the second segment partition outlet bus bar is connected to the second turning structure through the connecting bus bar. In other embodiments, no connecting bus bar may be arranged between the second section partition outlet bus bar and the second turning structure, namely, the cylinder body of the second section separated outlet end bus is directly and fixedly connected with the first external flange of the first cylinder body in the second turning structure, in this case, which corresponds to the second corner structure being moved a distance towards the second section, the length of the fourth main busbar section needs to be extended appropriately, or the length of the cylinder section of the second external flange arranged on the second cylinder in the second turning structure is properly prolonged, so that the cylinder body of the fourth main bus segment is fixedly connected with the second external flange of the second cylinder body in the second turning structure, or a connecting bus can be arranged between the second turning structure and the fourth main bus section to realize the fixed connection of the cylinder of the fourth main bus section and the second external flange of the second cylinder in the second turning structure.
In the above embodiment, the three-phase contact socket in the first cylinder and the three-phase contact socket in the second cylinder are conductively connected through the conductive insert. In other embodiments, the three-phase contact socket in the first cylinder may also be directly electrically connected with the three-phase contact socket in the second cylinder, for example, the three-phase contact socket in one cylinder extends into the other cylinder through the insulator and is electrically connected with the three-phase contact socket in the other cylinder.
In the above embodiment, each contact seat is directly fixed on the corresponding conductive insert, so that the conductive connection with the conductive insert is realized while the fixed connection with the insulator is realized. In other embodiments, each contact base may also be fixed to a portion of the structure of the insulator where the conductive insert is not disposed, and meanwhile, each contact base is in conductive contact with the conductive insert, the conductive contact may be that the insulator connecting section of each contact base is set to be open, a spring contact finger and a guide ring are disposed in an inner cavity of the contact base, and the conductive insert may be inserted into the inner cavity of the insulator connecting section of each contact base to achieve conductive connection with the contact base.
In the above embodiment, the opening edge of the perforation hole at the end of the insulator connecting section is provided with the annular protrusion around the opening edge, the conductive insert is provided with the groove matched with the annular protrusion, and each contact seat rapidly realizes the alignment of the perforation on the contact seat and the threaded blind hole on the conductive insert through the matching of the annular protrusion and the matching groove. In other embodiments, the annular protrusion and recess may not be provided, and may be used as well.
In the above embodiment, the contact base is provided with the pin fixing hole, the pin fixing hole is internally used for inserting the positioning pin, and the positioning pin forms the limiting column. In other embodiments, the limiting column can also be a structure integrally formed with the contact seat, and can also be used; the limiting column is not needed, the limiting groove is not needed to be formed in the conductive insert, and the position of the contact seat relative to the insulator can be judged manually when the contact seat is fixed, so that the contact seat can be used.
In the above embodiments, each contact base has a hollow structure. In other embodiments, each touch seat can also be solid construction, can use equally, certainly this time can't outwards wear to adorn fastening bolt and realize touching the seat and electrically conductive inserts's fixing in the inside of touching the seat, can set up the installation ear at the tip of touching the insulator linkage segment of seat, sets up the mounting hole on the installation ear, and electrically conductive inserts is last to correspond the mounting hole and is equipped with the screw hole, then realizes touching the seat and electrically conductive inserts's fixing through fastening bolt.
In the above embodiment, two pin fixing holes are provided on the contact base, so that two limiting posts are provided. In other embodiments, three or more fixing pin holes may be provided, and three or more corresponding limiting columns may be formed, and the same may be used.
In the above embodiment, the limiting post is disposed on the contact base, and the limiting groove is disposed on the conductive insert. In other embodiments, the position-limiting column can be arranged on the conductive insert, and the position-limiting groove is arranged on the contact seat, which can also be used.
The invention further provides a three-phase common-box bus turning structure, the specific structural form of the three-phase common-box bus turning structure is the same as that of the first turning structure in the embodiment of the GIS, and the description is omitted here.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911328672.4A CN111193218B (en) | 2019-12-20 | 2019-12-20 | A three-phase common box busbar turning structure and GIS |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911328672.4A CN111193218B (en) | 2019-12-20 | 2019-12-20 | A three-phase common box busbar turning structure and GIS |
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| CN111193218A CN111193218A (en) | 2020-05-22 |
| CN111193218B true CN111193218B (en) | 2021-05-11 |
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| CN114068231B (en) * | 2020-08-07 | 2023-10-27 | 平高集团有限公司 | A three-phase common box circuit breaker and high-voltage switchgear |
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