CN214754703U

CN214754703U - Transition bus for GIS and GIS

Info

Publication number: CN214754703U
Application number: CN202022910066.8U
Authority: CN
Inventors: 毕海波; 黄坤鹏; 李健; 康留涛; 李建彬; 李鹏; 赵营; 吴运泽; 娄晓丹; 王清华; 李伟强; 刘永超; 董清华; 冷龙茂
Original assignee: State Grid Corp of China SGCC; Pinggao Group Co Ltd; Henan Pinggao Electric Co Ltd
Current assignee: State Grid Corp of China SGCC; Pinggao Group Co Ltd; Henan Pinggao Electric Co Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-11-16
Anticipated expiration: 2030-12-07

Abstract

The utility model relates to a GIS is with transition generating line and GIS, the transition generating line includes: the transition connection shell is utilized to conveniently realize the fixed assembly of the three-phase common-box cylinder and the single-phase voltage transformer; the connecting conductor has an inclined extension such that the electrically conductive plug end is arranged centrally with respect to the transitional connecting housing. The utility model provides an among the transition generating line for GIS, utilize the transitional coupling casing conveniently to realize the three-phase and case barrel and single-phase voltage transformer's fixed assembly altogether to the electrically conductive inserts of usable connecting conductor collocation realizes that single-phase voltage transformer and an arbitrary looks conductor are electrically conductive to be connected, realizes getting the electricity operation, simultaneously, utilizes the slope extension section on the connecting conductor, is convenient for realize that single-phase voltage transformer's centering is arranged, makes things convenient for the centering to be qualified for the next round of competitions, improves the whole harmony of arranging of GIS spare part.

Description

Transition bus for GIS and GIS

Technical Field

The utility model belongs to the gas insulated switchgear field, concretely relates to GIS is with transition generating line and GIS.

Background

At present, isolating switches adopted by 126kVGIS of domestic and foreign manufacturers are basically three-phase common boxes, single-phase PT and lightning arresters are arranged upwards, and the PT and the lightning arresters are generally connected with the isolating switches through transition welding shells. In actual engineering application, for reducing the whole height of GIS, consider arranging voltage transformer in isolator's horizontal direction, like the three-phase box-sharing gas insulated metal enclosed switchgear that discloses in the chinese utility model patent in the publication number of authorizing CN201667503U, it is connected with voltage transformer through the basin formula insulator in isolator's horizontal side port department, and voltage transformer adopts the level to place the structure to utilize the support to support on corresponding chassis.

It should be noted that, the voltage transformer that docks with the case isolator altogether of three-phase can select three-phase voltage transformer, and is with high costs, in practical engineering application, adopt single-phase voltage transformer more, and single-phase voltage transformer can adopt two-way barrel cooperation large flange as the transition unit realization both docks when being connected with case isolator altogether of three-phase, for the three-phase conductor that is the article font and arranges, or make voltage transformer eccentric arrangement, or choose for use special three-phase conductor structure, the former appearance is pleasing to the eye, and be unfavorable for GIS spare part arrangement, the latter has increased the manufacturing and GIS whole assembly degree of difficulty, and is with high costs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a transition bus for GIS, which solves the technical problem that the overall arrangement of parts is affected due to the eccentric arrangement of the horizontally arranged PT relative to a three-phase common-box isolating switch in the prior art; and simultaneously, the utility model also provides an use above-mentioned GIS with transition bus-bar's GIS.

In order to achieve the above object, the utility model provides a GIS is with transition generating line's technical scheme is: a transition bus for GIS, comprising:

the transition connection shell is of a revolving body structure extending along the front-back direction, the front end of the transition connection shell is used for being fixedly connected with the single-phase voltage transformer in a sealing way, and the rear end of the transition connection shell is used for being fixedly connected with the three-phase common-box cylinder of the GIS in a sealing way;

the supporting insulators are fixedly arranged in the transitional connection shell, three conductive inserts are arranged on the supporting insulators in a delta shape and are used for being in conductive connection with three-phase conductors which are arranged in the delta shape in the three-phase common-box cylinder body in a one-to-one correspondence mode;

the connecting conductor is positioned on the front side of the supporting insulator, the front end of the connecting conductor is a conductive inserting end and is used for being conductively inserted with a corresponding conductive part so as to be conductively connected with the single-phase voltage transformer, the rear end of the connecting conductor is fixedly conductively connected with one of the three conductive inserts, the connecting conductor is provided with an inclined extension section, and the inclined extension section extends from the radial direction of the backward front edge transition connection shell to the center of the transition connection shell so that the conductive inserting end is arranged corresponding to the center of the transition connection shell;

and the two end shields are fixedly arranged on the front sides of the other two of the three conductive inserts in a one-to-one correspondence mode.

The beneficial effects are that: the utility model provides an among the transition generating line for GIS, utilize the transitional coupling casing conveniently to realize the three-phase and case barrel and single-phase voltage transformer's fixed assembly altogether to the electrically conductive inserts of usable connecting conductor collocation realizes that single-phase voltage transformer and an arbitrary looks conductor are electrically conductive to be connected, realizes getting the electricity operation, simultaneously, utilizes the slope extension section on the connecting conductor, is convenient for realize that single-phase voltage transformer's centering is arranged, makes things convenient for the centering to be qualified for the next round of competitions, improves the whole harmony of arranging of GIS spare part.

As a further improvement, the rear ends of the connecting conductors are detachably connected in an electrically conductive and fixed manner to the corresponding conductive inserts.

The beneficial effects are that: the connecting conductor is detachably connected with the corresponding conductive insert, so that the connecting conductor is convenient to disassemble and replace, and any conductive insert is convenient to select for power taking operation.

As a further improvement, the rear end of the connecting conductor is detachably and fixedly connected with the corresponding conductive insert through a fastening screw.

The beneficial effects are that: and the fastening screws are adopted to realize detachable connection, so that the processing and manufacturing are convenient.

As a further improvement, the rear end of the connecting conductor is provided with a counter bore, and the fastening screw is fixedly installed in the counter bore.

The beneficial effects are that: and a counter bore is arranged to avoid the influence of the fastening screw on an internal electric field.

As a further improvement, the fastening screw is sleeved with a check washer, one side of the check washer is in abutting fit with the counter bore, and the other side of the check washer is in abutting fit with the fastening screw.

The beneficial effects are that: the locking gasket is arranged, so that the fastening effect can be effectively improved.

As a further improvement, the conductive insertion end is provided with a linear insertion section extending along the front-back direction.

The beneficial effects are that: the linear insertion section is arranged, so that the conductive part can be conveniently inserted and matched with the corresponding conductive part.

As a further improvement, the electrically conductive plug end projects forward beyond the front end of the transitional connection housing.

The beneficial effects are that: the conductive insertion end is arranged in a protruding mode, and conductive insertion with the adaptive conductive part is facilitated.

As a further improvement, the intermediate connection casing includes a connection casing section, the rear end of the connection casing section is assembled with the insulator installation casing section in a centering and sealing manner, the support insulator is integrally cast and fixed in the insulator installation casing section, the front end of the connection casing section is the front end of the intermediate connection casing, the front end of the connection casing section is provided with a front connection flange, the rear end of the connection casing section is provided with a rear connection flange, the front connection flange is used for being fixedly connected with the single-phase voltage transformer in a sealing manner, and the rear connection flange is fixedly assembled with the insulator installation casing section.

The beneficial effects are that: the connecting shell section and the insulator mounting shell section which are arranged in a split mode are adopted, processing and manufacturing are facilitated, and processing and manufacturing cost can be effectively reduced.

As a further improvement, the rear connecting flange has an outer flange portion and an inner flange portion, the outer flange portion is in sealing fixed fit with the insulator mounting housing section, and the inner flange portion is in sealing stop fit with the front end of the supporting insulator.

The beneficial effects are that: the sealing effect can be effectively improved by utilizing the inner flange part and the outer flange part.

The utility model provides a GIS's technical scheme is:

a GIS, comprising:

the three-phase common-box cylinder is transversely arranged and extends along the front-back direction, a three-phase conductor is arranged in the three-phase common-box cylinder, and the three-phase conductor is arranged in a delta shape;

the single-phase voltage transformer is positioned on the front side of the three-phase common-box cylinder;

the single-phase voltage transformer passes through the fixed assembly of transition bus centering ground at the three-phase and altogether the case barrel front end, and the transition bus includes:

the transition connection shell is a revolving body structure extending along the front-back direction, the front end of the transition connection shell is fixedly connected with the single-phase voltage transformer in a sealing way, and the rear end of the transition connection shell is fixedly connected with the three-phase common-box cylinder in a sealing way;

the connecting conductor is positioned on the front side of the supporting insulator, the front end of the connecting conductor is a conductive inserting end, the rear end of the connecting conductor is fixedly conductively connected with one conductive insert of the three conductive inserts, the connecting conductor is provided with an inclined extension section, and the inclined extension section extends from the rear front edge to the radial direction of the transitional connection shell towards the center of the transitional connection shell so that the conductive inserting end is arranged corresponding to the center of the transitional connection shell;

The GIS transition bus comprises a single-phase voltage transformer, a transition connection shell, a central conductor insert and a pair of contact seats, wherein the middle insulator is arranged between the single-phase voltage transformer and the transition connection shell, the center of the middle insulator is fixedly provided with the central conductor insert, the front end of the central conductor insert is electrically connected with a power taking rod of the single-phase voltage transformer so as to be electrically connected with the single-phase voltage transformer, the rear end of the central conductor insert is fixedly provided with the pair of contact seats, and the pair of contact seats is electrically connected with a conductive inserting end of a connection conductor in the transition bus for the GIS.

The beneficial effects are that: the utility model provides an among the GIS, utilize transition bus with single-phase voltage transformer level centering ground fixed mounting at the front end of the three-phase common box barrel, single-phase voltage transformer and an arbitrary one phase conductor conductive connection are realized to the electrically conductive inserts of usable connecting conductor collocation, realize getting the electricity operation, simultaneously, utilize the slope extension section on the connecting conductor, the centering of being convenient for realize single-phase voltage transformer is arranged, makes things convenient for the centering to be qualified for the next round of competitions, improves GIS spare part overall arrangement harmony.

Drawings

Fig. 1 is a schematic view of a partial structure of a GIS in which a voltage transformer is horizontally installed according to the present invention;

FIG. 2 is a schematic structural diagram of the transition bus bar of FIG. 1;

fig. 3 is a half sectional view of the transition bus bar shown in fig. 2.

Description of reference numerals:

1. a single-phase voltage transformer; 10. a middle insulator; 11. taking an electric pole; 12. a central conductive device; 13. a contact seat is butted; 2. a transition bus; 201. a connecting conductor; 2011. a conductive plug-in terminal; 2012. a mating groove; 2013. a counter bore; 2014. an obliquely extending section; 202. connecting the shell sections; 2021. a front connecting flange; 2022. an outer flange portion; 2023. an inner flange portion; 203. an insulator mounting housing section; 204. a support insulator; 205. a conductive insert; 2051. connecting the inserts; 2052. a spare insert; 206. an end shield; 207. fastening screws; 208. a lock washer; 209. a through hole; 3. three-phase common-box cylinder.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as 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 accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to 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, elements recited by the phrase "comprising an … …" do not exclude the inclusion of such elements in processes or methods.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

The present invention will be described in further detail with reference to examples.

The utility model provides a GIS's embodiment 1:

in this embodiment, GIS's the same case barrel 3 of three-phase horizontal front end is fixed with voltage transformer through transition bus 2, and the same case barrel 3 of three-phase and voltage transformer all are transverse arrangement's form, corresponding to the three-phase conductor that is the article font and arranges, utilizes the connecting conductor 201 that the slope was arranged in transition bus 2, guarantees that voltage transformer centering ground fixed mounting is at the same case barrel 3 front end of three-phase, and not only the appearance is pleasing to the eye, still conveniently guarantees the inside spare part assembly interval of GIS. In addition, the connecting conductor 201 can be selected as an optional phase conductor to achieve electricity taking operation, the same conductor structure can be adopted without any redundant requirements on three-phase conductors, the number of parts can be effectively reduced, the material cost and the management cost of the conductors can be reduced, and the connecting conductor can be conveniently and directly applied to the existing three-phase common box structure.

As shown in fig. 1 to 3, the GIS in this embodiment includes a three-phase common-box type disconnecting switch and a single-phase voltage transformer 1, the three-phase common-box type disconnecting switch includes a three-phase common-box cylinder 3, the three-phase common-box cylinder 3 is transversely arranged and extends in the front-rear direction, a three-phase conductor is arranged therein, and the three-phase conductor is arranged in a delta shape.

The front end of the three-phase common-box cylinder body 3 is fixedly provided with a single-phase voltage transformer 1 through a transition bus 2, the structure of the transition bus 2 is as shown in fig. 2 and fig. 3, the transition bus 2 comprises a transition connection shell, the transition connection shell integrally extends along the front-back direction and is of a revolving body structure, the front end of the transition connection shell is fixedly connected with the single-phase voltage transformer 1 in a sealing mode through an intermediate insulator 10, and the rear end of the transition connection shell is fixedly connected with the front end of the three-phase common-box cylinder body 3 in a sealing mode.

The transition connection shell is internally provided with a support insulator 204, specifically a basin-type insulator is selected, conductive inserts 205 are embedded on the support insulator 204, the number of the conductive inserts 205 is arranged in a delta shape, the conductive inserts are in conductive connection with three-phase conductors in the three-phase common box barrel 3 in a one-to-one correspondence manner, generally speaking, a conductive contact seat is fixedly arranged on the rear side of the conductive insert 205 facing the three-phase conductors, and the conductive contact seat is in conductive insertion connection with corresponding phase conductors.

In addition, a through hole 209 is also formed in the support insulator 204 to allow the transition bus to communicate with the bus chamber to which the transition bus is butted.

In the three conductive inserts 205, one of the conductive inserts 205 can be selected as a connecting insert 2051, the other two inserts are standby inserts 2052, the front side of the connecting insert 2051 is detachably and fixedly connected with a connecting conductor 201, the connecting conductor 201 is located on the front side of the supporting insulator 204, the rear end of the connecting conductor 201 is conductively connected with a corresponding phase conductor through the connecting insert 2051, and the front end is a conductive plug-in end 2011 which is used for being conductively plugged with a corresponding conductive part, so that the conductive connection between the corresponding phase conductor and the unidirectional voltage transformer is realized, and the power taking operation is realized.

The connecting conductor 201 here extends along the fore-and-aft direction on the whole, and the front end is electrically conductive grafting end 2011, and for conveniently realizing electrically conductive grafting, electrically conductive grafting end 2011 is equipped with the straight line grafting section that extends along the fore-and-aft direction to, electrically conductive grafting end 2011 is outstanding forward and is arranged in the front end of transitional coupling casing, be convenient for with as electrically conductive parts corresponding electrically conductive grafting to contact base 13.

The front end face of the conductive plug-in terminal 2011 is provided with a matching groove 2012, so that a fastener in the contact seat 13 can be avoided conveniently.

The rear end of the connecting conductor 201 is provided with a counterbore 2013, and a fastening screw 207 is inserted into the counterbore 2013, so that the connecting conductor 201 and the connecting insert 2051 are detachably and fixedly assembled together in an electrically conductive manner through the fastening screw 207. Moreover, in order to improve the fastening effect, the fastening screw 207 is sleeved with a check washer 208, one side of the check washer 208 is in press fit with the counter bore 2013, and the other side of the check washer 208 is in press fit with the fastening screw 207, wherein the check washer 208 is specifically a disc spring washer.

In the present exemplary embodiment, the connection conductor 201 has an inclined extension 2014, which extends from the rear to the front toward the center of the transition connection housing, such that the conductive plug end is arranged corresponding to the center of the transition connection housing, in order to facilitate the conductive plug with the centrally arranged pair of contact sockets 13.

In the three conductive inserts 205 on the supporting insulator 204, one conductive insert 205 can be selected as a connecting insert 2051, the other two conductive inserts 205 can be used as spare inserts 2052, after the connecting insert 2051 is selected, the end shielding piece 206 can be fixedly installed on the front side of the other two spare inserts 2052, so that the influence of an electric field is avoided, in the specific installation process, the end shielding piece 206 can be selected as an end shielding ball, and the end shielding ball can be fixedly covered on the front side of the spare insert 2052 through a fixing screw fastening cover, so that good shielding protection is realized.

In order to facilitate the processing and manufacturing of the transitional connection shell, the transitional connection shell comprises a connection shell section 202 and an insulator installation shell section 203 which are assembled together in a split manner, the supporting insulator 204 is integrally cast and fixed in the insulator installation shell section 203, the front end of the connection shell section 202 is used as the front end of the transitional connection shell, the front end of the connection shell section 202 is provided with a front connection flange 2021, the rear end of the connection shell section 202 is provided with a rear connection flange, the front connection flange 2021 is fixedly assembled with the single-phase voltage transformer 1 through an intermediate insulator 10, the rear connection flange is provided with an outer flange portion 2022 and an inner flange portion 2023, the outer flange portion 2022 is fixedly assembled with the insulator installation shell section 203 in a sealing manner, and the inner flange portion 2023 is matched with the front end of the supporting insulator 204 in a sealing and blocking manner.

The connecting shell section 202 has a smooth reducing section, the smooth reducing section is an arc transition section, and the radial size of the smooth reducing section is gradually reduced from back to front, so that the radial size of the front end of the transition connecting shell is smaller than that of the rear end, and stress concentration can be effectively avoided on the basis of realizing transition connection.

As shown in fig. 1, the single-phase voltage transformer 1 is fixedly assembled with the transition bus 2 through the intermediate insulator 10, the center of the intermediate insulator 10 is fixedly provided with the central conductor insert, the front side and the rear side of the central conductor insert are respectively provided with the conductive parts, the conductive part at the front end is conductively inserted with the power taking rod 11 of the single-phase voltage transformer 1, the conductive part at the rear end is a pair of contact bases 13, the pair of contact bases 13 is conductively inserted with the conductive insertion end of the connecting conductor 201, and generally speaking, in order to improve the conductive connection effect, a conductive contact finger is arranged in the pair of contact bases 13.

The single-phase voltage transformer is fixedly installed at the horizontal front end of the three-phase common-box cylinder by using the transition bus, and the transition bus, the single-phase voltage transformer and the three-phase common-box cylinder are fixedly assembled by using the flange connection structure. The connecting conductor can be optionally provided with a conductive insert to realize conductive assembly, no requirement is made on a three-phase conductor structure, the corresponding single-phase voltage transformer can be conveniently ensured to be arranged in a centering way no matter which phase conductor is connected, and the central wire outlet is convenient to realize. And the arrangement of parts in the whole GIS is more flexible and coordinated.

The utility model provides a GIS's embodiment 2:

the difference from example 1 is mainly that: in example 1, the rear ends of the connecting conductors are detachably and fixedly connected to the corresponding connecting inserts. In this embodiment, the connection conductor can also be directly soldered to the connection insert.

The utility model provides a GIS's embodiment 3:

the difference from example 1 is mainly that: in embodiment 1, the connection conductor is provided with the lock washer to improve the fastening effect of the fastening screw. In this embodiment, the locking washer can also be omitted, and the connection conductor and the connection insert can be fixedly mounted by means of the fastening screw only.

The utility model provides a GIS's embodiment 4:

the difference from example 1 is mainly that: in embodiment 1, for the transitional connection shell, the transitional connection shell includes a connection shell section and an insulator installation shell section which are separately arranged, so that the transitional connection shell is convenient to manufacture and assemble. In this embodiment, the transition connection housing may be an integrated structure, the fixed support insulator may be integrally cast inside the transition connection housing, and the connection housing may be installed inside the transition connection housing.

The utility model provides a GIS's embodiment 5:

the difference from example 1 is mainly that: in embodiment 1, the rear connecting flange of the transition connecting housing is provided with not only an outer flange portion for sealing and fixing assembly with the insulator mounting housing, but also an inner flange portion for stopping and sealing engagement with the supporting insulator. In this embodiment, the inner flange portion may be omitted and effective sealing is ensured only by virtue of the sealing engagement of the outer flange portion with the insulator mounting housing.

The utility model provides a GIS's embodiment 6:

the difference from the embodiment 1 is mainly that: in embodiment 1, the connecting shell section has a smooth variable diameter section, the smooth variable diameter section is an arc transition section, and the radial dimension of the smooth variable diameter section gradually decreases from back to front. In this embodiment, connecting casing one end also can be straight section of thick bamboo, and intermediate insulator external diameter size is unanimous with straight section of thick bamboo size, and single-phase voltage transformer's barrel size is also unanimous with straight section of thick bamboo size, does not influence normal use.

The utility model provides a GIS is with transition bus's embodiment, GIS in this embodiment is with transition bus's structure is the same with the transition bus's in above-mentioned GIS embodiment 1 structure, no longer gives unnecessary details here.

In other embodiments, the structure of the transition bus for the GIS may also adopt the structure of the transition bus in any one of the above GIS embodiments 2 to 6, and is not described herein again.

Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and 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 modifications may be made without inventive effort to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A transition bus for GIS is characterized by comprising:

the transition connection shell is of a revolving body structure extending along the front-back direction, the front end of the transition connection shell is used for being fixedly connected with the single-phase voltage transformer (1) in a sealing way, and the rear end of the transition connection shell is used for being fixedly connected with the three-phase common-box cylinder (3) of the GIS in a sealing way;

the supporting insulators (204) are fixedly arranged in the transitional connection shell, the supporting insulators (204) are provided with three conductive inserts (205), and the three conductive inserts (205) are arranged in a delta shape and are used for being in conductive connection with three-phase conductors which are arranged in the delta shape in the three-phase common-box cylinder body (3) in a one-to-one correspondence manner;

the connecting conductor (201) is located on the front side of the supporting insulator (204), the front end of the connecting conductor (201) is a conductive plug end (2011) which is used for being conductively plugged with a corresponding conductive component to be conductively connected with the single-phase voltage transformer (1), the rear end of the connecting conductor is fixedly conductively connected with one conductive insert (205) of the three conductive inserts (205), the connecting conductor (201) is provided with an inclined extension section (2014), and the inclined extension section (2014) extends from the radial direction of the backward leading edge transition connection shell to the center of the transition connection shell, so that the conductive plug end is arranged corresponding to the center of the transition connection shell;

and two end shields (206) fixedly mounted on the front sides of the other two conductive inserts (205) of the three conductive inserts (205) in a one-to-one correspondence.

2. The transition busbar for GIS according to claim 1, wherein the rear end of the connecting conductor (201) is detachably conductively fixedly connected to the corresponding conductive insert (205).

3. The transition busbar for GIS according to claim 2, wherein the rear end of the connecting conductor (201) is detachably and fixedly connected with the corresponding conductive insert (205) by a fastening screw (207).

4. The transition bus bar for the GIS according to claim 3, wherein a counterbore (2013) is provided at the rear end of the connection conductor (201), and the fastening screw (207) is fixedly installed in the counterbore (2013).

5. The transition bus bar for the GIS according to claim 4, wherein the fastening screw (207) is sleeved with a check washer (208), one side of the check washer (208) is in abutting fit with the counter bore (2013), and the other side of the check washer is in abutting fit with the fastening screw (207).

6. The transition busbar for the GIS according to any one of claims 1 to 5, wherein the conductive plug terminal (2011) is provided with a linear plug section extending in a front-rear direction.

7. The transition busbar for GIS of claim 6, wherein the conductive plug terminal (2011) projects forwardly beyond a front end of the transition connection housing.

8. The transition bus for the GIS according to any one of claims 1 to 5, wherein the transition connection shell comprises a connection shell section (202), the rear end of the connection shell section (202) is fixedly assembled with an insulator installation shell section (203) in a middle-to-middle sealing manner, the supporting insulator (204) is integrally cast and fixed in the insulator installation shell section (203), the front end of the connection shell section (202) is the front end of the transition connection shell, the front end of the connection shell section (202) is provided with a front connection flange (2021), the rear end of the connection shell section is provided with a rear connection flange, the front connection flange (2021) is used for being fixedly connected with the single-phase voltage transformer (1) in a sealing manner, and the rear connection flange is fixedly assembled with the insulator installation shell section (203).

9. The transition busbar for GIS according to claim 8, wherein the rear connecting flange has an outer flange portion (2022) and an inner flange portion (2023), the outer flange portion (2022) is sealingly and fixedly assembled with the insulator mounting shell section (203), and the inner flange portion (2023) is sealingly and stop-fitted with the front end of the supporting insulator (204).

10. A GIS, comprising:

the three-phase common-box cylinder body (3) is transversely arranged and extends along the front-back direction, three-phase conductors are arranged in the three-phase common-box cylinder body (3), and the three-phase conductors are arranged in a delta shape;

the single-phase voltage transformer (1) is positioned on the front side of the three-phase common-box cylinder (3);

the GIS transition bus-bar type voltage transformer is characterized in that the single-phase voltage transformer (1) is fixedly assembled at the front end of a three-phase common box cylinder (3) in a centering mode through a transition bus, the transition bus adopts the transition bus for the GIS according to any one of claims 1 to 9, the rear end of the single-phase voltage transformer (1) is fixedly assembled with the front end of a transition connection shell of the transition bus for the GIS, an intermediate insulator (10) is arranged between the single-phase voltage transformer (1) and the transition connection shell, a central conductor insert is fixedly arranged at the center of the intermediate insulator (10), the front end of the central conductor insert is in conductive connection with a power taking rod (11) of the single-phase voltage transformer (1), a pair of contact bases (13) is fixedly arranged at the rear end, and the pair of contact bases (13) is in conductive insertion fit with a conductive insertion end (2011) of a connection conductor (201) in the transition bus for the GIS.