Pluggable wiring device for high-voltage converter transformer valve side bushing

Abstract

The utility model provides a plug-in type wiring device used for a high-voltage converter transformer valve side bushing, and the device comprises a plug seat device which is used for the plugging of a plug head, and is provided with a plug seat body and a plug seat flange which is fixedly connected with the plug seat body; the supporting device is used for supporting the plugging seat device, and the plugging seat flange is detachably connected to the supporting device; the pressure equalizing ball is used for shielding the plugging seat device and the supporting device, the supporting device is designed into a form of a plurality of supporting seats, and the plurality of supporting seats are respectively and fixedly connected to the inner wall of the pressure equalizing ball and are detachably connected with the plugging seat flange. According to the plug-in type wiring device, the fixed installation operation of the plug-in type wiring device for the high-voltage converter transformer valve side bushing can be simplified.

Description

Technical Field

[0001] The utility model relates to a plug - in wiring device for a valve - side bushing of a high - voltage converter transformer. Background Art

[0002] The existing structures of the plug - in heads for high - voltage converter transformer valve - side bushings (400 kV and above) cooperating with the plug - in sockets in the riser bushing all adopt the following structure: The plug - in socket is welded to the plug - in socket flange, and the plug - in socket flange is fixed to the shielding tube flange of the valve - side lead through a support tube; the plug - in socket, the plug - in socket flange, the support tube and part of the shielding tube are shielded by grading spheres; the current - carrying cable is fixed to the plug - in socket flange through a threaded seat. Thus, the structure of the obtained plug - in wiring device is relatively complex, the installation difficulty is high, and the shielding range of the grading spheres also needs to cover the shielding tube flange, the plug - in socket and the support tube, resulting in a relatively large overall size of the plug - in wiring device and the grading spheres needing to be fixed and transported separately. Summary of the Utility Model

[0003] The main technical problem to be solved by the present disclosure is to simplify the structure of the plug - in wiring device for the valve - side bushing of a high - voltage converter transformer and reduce the installation difficulty of the plug - in wiring device.

[0004] This technical problem is solved by a plug - in wiring device for a valve - side bushing of a high - voltage converter transformer. The valve - side bushing of the high - voltage converter transformer is connected to a lead device through the plug - in wiring device. Wherein, one end of the valve - side bushing of the high - voltage converter transformer is provided with a plug - in head, and the lead device has a lead and a lead shielding tube for shielding, in particular for electromagnetically shielding the lead. The plug - in wiring device includes: a plug - in socket device for inserting the plug - in head, which has a plug - in socket body and a flange fixedly connected to the plug - in socket body; a support device for supporting the plug - in socket device, the plug - in socket flange being detachably connected to the support device; and a grading sphere for shielding the plug - in socket device and the support device. According to the present disclosure, the support device is designed in the form of a plurality of support seats, and the plurality of support seats are respectively fixedly connected to the inner wall of the grading sphere and are detachably connected to the plug - in socket flange.

[0005] By designing the supporting device in the form of multiple supporting seats, these multiple supporting seats are respectively fixedly connected to the inner wall of the grading sphere and are detachably connected to the plug-in seat flange, which can simplify the fixed installation operation of the plug-in wiring device for the valve side bushing of the high-voltage converter transformer according to the present disclosure. Because there is no longer a need to support the support pipe of the plug-in seat and the support flange bolted thereto to ensure the installation of the bushing plug, and thus there is no need to tighten the torque for anti-loosening. At the same time, since the support pipe is omitted and only an equipotential wire is used to connect between the grading sphere and the plug-in seat body, the diameter of the grading sphere required for sufficient installation operation space can also be reduced. In this way, the flange and thus the plug-in seat device are directly fixed to the support seat welded in the grading sphere by a detachable connection method, that is, without the support pipe to support the plug-in seat, which can reduce the height of the grading sphere.

[0006] In a further preferred embodiment of the present disclosure, it is stipulated that the contours of the multiple supporting seats are respectively designed in an L shape. The top surfaces of the supporting seats are respectively provided with first holes for accommodating detachable connection components, and the radially outward pointing radial end surfaces of the supporting seats are designed for fixed connection with the inner wall of the grading sphere. The supporting seats constructed in this way according to the present disclosure can avoid the heat deformation of the first holes during the fixed connection, especially during the welding process.

[0007] In order to make the plug-in seat device more conveniently fixed to the supporting seat, it is preferably stipulated that second holes extending axially along the plug-in seat flange are respectively provided on the top surfaces of the multiple supporting seats, wherein the first holes and the second holes are axially aligned with each other along the plug-in seat flange.

[0008] According to a further extended technical solution of the present disclosure, it is advantageously stipulated that the dimensions of the multiple supporting seats along the axial direction of the plug-in seat flange are designed such that the converging section where the lead wires converge when the plug is inserted into the plug-in seat device is spaced from the plug.

[0009] According to the present disclosure, only the section of the lead wire close to the plug when the plug is inserted into the plug-in seat device, especially the converging section where the lead wires converge, needs to be spaced from the plug by a certain distance, that is, as long as the lead wire does not contact the plug when the plug is inserted into the plug-in seat device, the dimensions of the supporting device along the axial direction of the plug-in seat flange, that is, the height of the supporting device, can be designed as small as possible. Therefore, the axial dimension of the grading sphere, that is, the height of the grading sphere, can be further reduced.

[0010] In order to reduce the dimensions of the grading sphere in the circumferential and radial directions, it is advantageously stipulated that the lead wire is detachably connected to the circumferential side of the plug-in seat flange through a pressure connection lug.

[0011] With this solution, when the plug is inserted into the socket device, the distance from the plug to the lead is farther than when the lead is connected to the bottom end face of the flange, so that the inserted plug is less likely to contact the lead, especially the converging section of the lead, during operation.

[0012] According to the present disclosure, in order to detachably connect the lead to the side of the plug socket flange while ensuring that the radial dimension of the entire structure is not increased, preferably, a radial groove is provided on the circumferential side of the plug socket flange, and a third hole extending radially is provided at the radial bottom of the radial groove. The third hole accommodates the detachable connection component of the pressure connection lug when the pressure connection lug is detachably connected to the circumferential side. Wherein, the radial groove and the support seat (121) are arranged out of alignment in the circumferential direction.

[0013] In a preferred embodiment, it is stipulated that the number of support seats is designed to be four, so as to correspond to the number of leads, preferably four, respectively, so as to achieve better wiring and correspond to the number of first holes in the plug socket flange, preferably four, to facilitate the stability of fixation.

[0014] Furthermore, in order to simplify the installation and transportation of the plug-in wiring device for the valve side bushing of the high-voltage converter transformer, according to the present disclosure, it is preferably stipulated that one end of the grading ball is fixedly connected to one end of the lead shielding tube.

[0015] Since the grading ball is fixedly connected to the lead shielding tube and the support device is also fixedly connected to the grading ball, they do not need to be disassembled during transportation and do not need to be reconnected on site. In addition, by fixedly connecting the grading ball to the lead shielding tube, the grading ball according to the present disclosure has a better shielding effect on the lead section exposed to the lead shielding tube to be connected to the plug socket device.

[0016] In order to design the plug-in wiring device for the valve side bushing of the high-voltage converter transformer to be more compact and make the installation operation of the plug-in wiring device more convenient, according to the present disclosure, it is further preferably stipulated that a fourth hole for detachably connecting the equipotential line is provided on the support seat, and a fifth hole for detachably connecting the equipotential line is provided on the top surface of the plug socket flange.

[0017] According to a further expansion scheme of the present disclosure, the fixed connection is welding, and / or the detachable connection is bolt connection.

[0018] By selecting the fixed connection as welding, the structural weight of the plug-in wiring device for the valve side bushing of the high-voltage converter transformer according to the present disclosure can be reduced; the processing and assembly processes of the plug-in wiring device according to the present disclosure can be simplified, and the production efficiency of the plug-in wiring device according to the present disclosure can be improved; the structural strength of the plug-in wiring device according to the present disclosure is high, and the welding joint has good sealing performance; the welding process of the plug-in wiring device according to the present disclosure is easy to realize mechanization and automation.

[0019] According to the present disclosure, by selecting the detachable connection as a bolt connection, a plug-in wiring device with high reliability and easy disassembly and assembly can be realized, making the plug-in wiring device simple in structure and good in adjustability. Brief Description of the Drawings

[0020] In order to make the objectives, technical solutions, and advantages of the present disclosure clearer, the plug-in wiring device and the plug-in wiring device for the valve side bushing of the high-voltage converter transformer according to the present disclosure will be further described below in conjunction with the drawings and specific embodiments. Among them,

[0021] Figure 1 is a cross-sectional view of the plug-in wiring device for the valve side bushing of the high-voltage converter transformer in the prior art when the plug-in head is inserted;

[0022] Figure 2 is a cross-sectional view of an embodiment of the plug-in wiring device for the valve side bushing of the high-voltage converter transformer according to the present disclosure when the plug-in head is inserted;

[0023] Figure 3 is a three-dimensional cross-sectional view of an embodiment of the plug-in wiring device for the valve side bushing of the high-voltage converter transformer according to the present disclosure when the plug-in head is inserted as viewed from the upper right;

[0024] Figure 4 is an exploded view of some components of the plug-in wiring device for the valve side bushing of the high-voltage converter transformer according to the present disclosure.

[0025] Reference Signs

[0026] 100 Plug-in Wiring Device

[0027] 110 Plug-in Base Device

[0028] 111 Plug-in Base Body

[0029] 112 Plug-in Base Flange

[0030] 112` Plug-in Base Flange

[0031] 113 Top Surface

[0032] 114 Peripheral Side

[0033] 115 Second Hole

[0034] 116 Third hole

[0035] 117 Fifth hole

[0036] 118 Crimping thread seat

[0037] 120 Support device

[0038] 121 Support seat

[0039] 121` Support tube

[0040] 122 Top end face

[0041] 123 Radial end face

[0042] 124 First hole

[0043] 125 Fourth hole

[0044] 130 Voltage equalizing sphere

[0045] 130` Voltage equalizing sphere

[0046] 131 Inner wall

[0047] 200 Valve side bushing of high - voltage converter transformer

[0048] 210 Plug - in head

[0049] 300 Lead device

[0050] 310 Lead

[0051] 311 Converging section

[0052] 312 Crimping lug

[0053] 320 Lead shielding tube

[0054] 320` Lead shielding tube

[0055] 321 Shielding tube flange

[0056] 400 Equipotential line Detailed implementation manners

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above - mentioned drawings are intended to cover non - exclusive inclusion.

[0058] In the description of the embodiments of the present application, technical terms such as "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order or primary-secondary relationship of the indicated technical features.

[0059] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, the detailed description of the same components is omitted in different forms of the drawings.

[0060] In the description of the embodiments of the present disclosure, the directional terms "axial direction" and "radial direction" are for rotationally symmetric devices or elements, such as for plug-in connectors, plug-in socket flanges, plug-in socket bodies, grading balls, support devices, lead devices, etc. The "axial direction" is the direction of their central axis, and the "radial direction" is perpendicular to the "axial direction", that is, the direction of their diameter or radius; technical terms such as "height", "circumferential side", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, rather than indicating or implying that the indicated devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present disclosure.

[0061] Figure 1 The cross-sectional view of the existing plug-in wiring device 100` for the valve side bushing 200 (400 kV and above) of the high-voltage converter transformer when the plug-in connector 210 is inserted is shown. As shown in the figure, a plug-in connector 210 is provided at one end of the valve side bushing 200 of the high-voltage converter transformer. The lead device has a lead 310 and a lead shielding tube 320` surrounding the lead 310 for shielding the lead 310. The plug-in wiring device 100` includes a plug-in socket device for inserting the plug-in connector 210, a support device for supporting the plug-in socket device, and a grading ball 130`. The plug-in socket device has a cylindrical plug-in socket body 111 and a plug-in socket flange 112` fixedly connected to the plug-in socket body 111, preferably welded. The support device has a support tube 121` extending along the axial direction and a support flange 126 provided at the bottom end of the support tube 121`. The lead shielding tube 320` is provided with a shielding tube flange 321 at the top for bolt connection with the support flange 126. The grading ball 130` surrounds and shields the plug-in socket device, the support tube 121`, the support flange 126, the shielding tube flange 321, and the lead section exposed outside the lead shielding tube 320`.

[0062] As shown in the figure, the plug-in socket flange 112` of the plug-in socket device is welded to the circumferential side of the plug-in socket body 111. The lead 310 is connected to the plug-in socket flange 112` through a crimping threaded seat 118. The plug-in socket flange 112` is bolted to the support tube 121`. The support flange 126 is bolted to the shielding tube flange 321.

[0063] In the prior art, the installation is carried out in the following manner Figure 1 The plug-in wiring device 100` for the valve-side bushing 200 of the high-voltage converter transformer shown: weld the plug-in seat body 111 and the plug-in seat flange 112` together; fix the plug-in seat device between the plug-in seat flange 112` and the support flange 126 using the support pipe 121`, and bolt-connect the support flange 126 to the shield pipe flange 321; carry out bolt connections between the plug-in seat flange 112` and the support pipe 121`, between the support pipe 121` and the support flange 126, and between the support flange 126 and the shield pipe flange 321, and then torque-tighten all these connection positions to prevent loosening; connect the lead 310 to the bottom surface of the plug-in seat flange 112` through the crimping thread seat, and then torque-tighten to make these bolt connections more firm and reliable; when installing the grading ball 130`, put the grading ball 130` over the plug-in seat device and part of the shield pipe from top to bottom, and ensure that the grading ball 130` does not bump into the plug-in seat device and the shield pipe during this process; connect the grading ball 130` to the lead shield pipe 320` and the plug-in seat device respectively using the equipotential wire 400; support and fix the grading ball 130` separately; transport the grading ball 130` separately after disassembly during transportation, and when disassembling, it is necessary to remove the connections between the grading ball 130` and the shield pipe and the plug-in seat device, and when installing the plug-in wiring device 100` for the valve-side bushing 200 of the high-voltage converter transformer on-site, it is necessary to connect the grading ball 130`, the lead shield pipe 320` and the plug-in seat device to each other again in a cumbersome manner.

[0064] To ensure that the plug 210 for the valve-side bushing 200 of the high-voltage converter transformer can be reliably inserted into the plug-in seat body 111 without contacting the converging section 311 where the leads 310 connected to the plug-in wiring device converge with each other Figure 1 The plug-in wiring device 100` shown needs to support the plug-in seat device through the support pipe 121`. Since the grading ball 130` is to cover or surround the entire plug-in seat device, the support pipe 121`, the support flange 126 and the lead section of the exposed lead shield pipe 320`, this results in a relatively large overall height of the grading ball 130`, that is, the axial dimension of the grading ball 130` is relatively large; in addition, to ensure that the grading ball 130` can shield the plug-in seat device, the support pipe 121`, the shield pipe 320`, etc. and there is space to connect the equipotential wire 400, the diameter of the grading ball 130` needs to meet the requirement of having enough installation and operation space. Therefore, as Figure 1 shown, the overall structure of the plug-in wiring device 100` is relatively complex and the installation difficulty is relatively high.

[0065] Figure 2Shows a cross-sectional view of an embodiment of a plug-in wiring device for a valve-side bushing of a high-voltage converter transformer when the plug-in head is inserted. The valve-side bushing 200 of the high-voltage converter transformer is connected to the lead device 300 through the plug-in wiring device 100. One end of the valve-side bushing 200 of the high-voltage converter transformer is provided with a plug-in head 210. The lead device 300 has a lead 310 and a lead shielding tube 320 for shielding the lead 310. The lead 310 has a plurality of sections in the installed state, that is, a lead section exposing the lead shielding tube 320 and a lead section not exposing the lead shielding tube 320. The lead section exposing the lead shielding tube 320 has an end section parallel to the axis of the plug-in base body and a converging section 311 whose directions converge with each other. In order to reduce the longitudinal extension dimension of the entire plug-in wiring device 100, especially the longitudinal extension dimension of the grading sphere or the height of the grading sphere, the sizes of a plurality of support seats along the axial dimension of the plug-in base flange are designed to be small enough to keep the converging section spaced from the plug-in head 210 when the plug-in head is inserted into the plug-in base device.

[0066] The plug-in wiring device 100 includes a plug-in base device 110 for inserting the plug-in head 210, a support device 120 for supporting the plug-in base device 110, and a grading sphere 130 for shielding the plug-in base device 110 and the support device 120. Among them, the plug-in base device 110 has a plug-in base body 111 and a plug-in base flange 112 fixedly connected to the plug-in base body 111, preferably welded. The plug-in base flange 112 is detachably connected, preferably bolted, to the support device 120. The resulting plug-in wiring device 100 cancels the support tube between the plug-in base device 110 and the support device 120. Therefore, the plug-in wiring device 100 is more compact and space-saving in structure, and at the same time, the installation operation of the plug-in wiring device 100 is also simpler.

[0067] Figure 3 Is a three-dimensional cross-sectional view seen from the upper right when an embodiment of a plug-in wiring device for a valve-side bushing of a high-voltage converter transformer inserts the plug-in head. In this embodiment, in order to arrange the equipotential line 400 more compactly in the grading sphere 130 and facilitate the installation operation, one end of the equipotential line 400 is connected to the support device 120, and the other end of the equipotential line 400 is connected to the top surface 113 of the plug-in base flange 112.

[0068] Combined with Figure 2 and Figure 3, one end of the voltage equalizing ball 130 is fixedly connected to one end of the lead shielding tube 320, preferably by welding. Thus, the obtained voltage equalizing ball 130 and the lead shielding tube 320 are integrated. Not only is the shielding effect better than that of the prior art, but also there is no need for the separate fixation and transportation as in the prior art. In addition, since the voltage equalizing ball 130 and the lead shielding tube 320 are welded into one body, the support and fixation are also integrated. During transportation, there is no need to disassemble, and all connections do not need to be disassembled, nor do they need to be reconnected on site. Therefore, the installation difficulty of the pluggable wiring device 100 for the valve side bushing 200 of the high-voltage converter transformer according to the embodiment is low.

[0069] As Figure 2 and Figure 3 shown, the support device 120 is welded to the inner wall 131 of the voltage equalizing ball 130. Since the plug seat body 111 is directly bolted to the support device 120, there is no need Figure 1 for the support tube 121` in to hold up the plug seat device, so the height of the voltage equalizing ball 130` is reduced, that is, the dimension of the voltage equalizing ball 130` extending axially; there is no need to use the shielding tube flange 321 in the prior art. Therefore, only the equipotential line 400 connection between the voltage equalizing ball 130 and the plug seat device 110 needs to be carried out. Since the diameter of the voltage equalizing ball 130 according to the present disclosure only needs to satisfy shielding the plug seat device and having enough space to connect the equipotential line 400, the height and diameter of the voltage equalizing ball 130 can both be reduced. Specifically, the overall dimension can be reduced by 20% - 30%.

[0070] Figure 4 is an exploded view of some components of the pluggable wiring device 100 for the valve side bushing 200 of the high-voltage converter transformer according to the present disclosure. As clearly shown in this figure, the support device 120 is designed in the form of preferably four support seats 121. The four support seats 121 are respectively arranged evenly around the axis of the plug seat body 111 and are used to be bolted to the plug seat flange 112. Among them, the contour of the support seat 121 is designed in an L shape. The L-shaped support seats respectively have a top end face 122 at the top in the installation state, a radial end face 123 pointing radially outward, and two circumferential sides pointing circumferentially. In this embodiment, the radial end face 123 of the support seat 121 is preferably welded to the inner wall 131 of the voltage equalizing ball 130, and fourth holes 125 for connecting one end of the equipotential line 400 are respectively opened on the circumferential sides of the support seat 121.

[0071] As Figure 4As shown, a radial groove is provided on the circumferential side 114 of the plug-in socket flange 112, and a third hole 116 extending radially is provided at the bottom of the radial groove. Among them, the radial groove and the support seat are arranged out of alignment in the circumferential direction to enable the pressure connection lug 312 for the lead wire 310 to be bolted to the circumferential side 114 of the plug-in socket flange 112, and a fifth hole 117 for connecting the other end of the equipotential wire 400 is provided on the top surface 113 of the plug-in socket flange 112.

[0072] As Figure 4 combined Figure 2 It can be clearly seen that a first hole 124 and a second hole 115 extending along the axis of the plug-in socket flange are respectively provided on the top surface 113 of the plug-in socket flange 112 and the top end surface 122 of the support seat 121 for accommodating detachable connecting components, preferably bolts. Among them, the first hole 124 and the second hole 115 are aligned with each other along the axis of the plug-in socket flange; the lead wire 310 is detachably connected through the pressure connection lug 312, especially bolted to the circumferential side 114 of the plug-in socket flange 112. For this purpose, a radially extending third hole 116 is provided on the circumferential side 114 of the flange to accommodate the bolt.

[0073] The above are only the preferred embodiments of the present disclosure and are not used to limit the protection scope of the present disclosure. It should be noted that for those of ordinary skill in the art of this technology, various modifications, equivalent replacements, improvements, etc. can be made without departing from the principle of the present disclosure, and these modifications, equivalent replacements, and improvements are all included in the protection scope of the present disclosure.

Claims

1. A plug-in wiring device (100) for a high-voltage converter transformer valve-side bushing (200), wherein the high-voltage converter transformer valve-side bushing (200) is connected to a lead device (300) via the plug-in wiring device (100), wherein: One end of the high-voltage converter transformer valve-side bushing (200) is provided with a plug-in head (210), the lead device (300) comprises a lead wire (310) and a lead wire shielding tube (320) for shielding the lead wire (310), wherein the plug-in wiring device (100) comprises: A plug socket device (110) for inserting the plug head (210), the plug socket device (110) comprising a plug socket body (111) and a plug socket flange (112) fixedly connected to the plug socket body (111); A supporting device (120) for supporting the plug-in socket device (110), wherein the plug-in socket flange (112) is detachably connected to the supporting device (120); and a pressure equalizing ball (130) for shielding the plug socket device (110) and the supporting device (120), It is characterized in that the supporting device (120) is designed in the form of multiple supporting seats (121), and the multiple supporting seats (121) are respectively fixedly connected to the inner wall (131) of the pressure equalizing ball (130) and are detachably connected to the plug-in seat flange (112).

2. The plug-in wiring device (100) for a high-voltage converter transformer valve-side bushing (200) according to claim 1, characterized in that: The contours of the multiple support seats (121) are respectively designed to be L-shaped, and the top end surfaces (122) of the support seats (121) are respectively provided with first holes (124) extending axially along the plug-in seat flange, and the radial end surfaces (123) of the support seats (121) pointing radially outward are designed to be fixedly connected to the inner wall (131) of the pressure equalizing ball (130).

3. The plug-in wiring device (100) for a high-voltage converter transformer valve-side bushing (200) according to claim 2, characterized in that: Second holes (115) extending axially along the plug-in seat flange are respectively provided on the top surface (113) of the plug-in seat flange (112), wherein the first hole (124) and the second hole (115) are aligned with each other along the axial direction of the plug-in seat flange.

4. The plug-in wiring device (100) for a valve-side bushing (200) of a high-voltage converter transformer according to claim 2, characterized in that: The dimensions of the plurality of support seats (121) along the axial direction of the plug socket flange are designed so that a converging section (311) where the leads converge when the plug socket (210) is inserted into the plug socket device (110) is spaced from the plug socket (210).

5. The plug-in wiring device (100) for a high-voltage converter transformer valve-side bushing (200) according to claim 2, characterized in that: The lead wire (310) is detachably connected to the peripheral side (114) of the plug socket flange (112) via a crimping lug (312).

6. The plug-in connection device (100) for a high-voltage converter transformer valve-side bushing (200) according to claim 5, characterized in that: A radial groove is provided on the circumferential side (114) of the plug-in seat flange (112), and a radially extending third hole (116) is provided at the radial bottom of the radial groove, wherein the third hole (116) accommodates a detachably connected component of the crimping lug (312) when the circumferential side (114) is detachably connected to the crimping lug (312), wherein the radial groove and the support seat (121) are arranged in a circumferentially offset manner.

7. The plug-in type wiring device (100) for a valve-side bushing (200) of a high-voltage converter transformer according to claim 3, characterized in that: The number of the supporting seats (121) is four.

8. The plug-in type wiring device (100) for a high voltage converter transformer valve side bushing (200) according to claim 1, characterized in that: One end of the pressure equalizing ball (130) is fixedly connected to one end of the lead shielding tube (320).

9. The plug-in type wiring device (100) for a high voltage converter transformer valve side bushing (200) according to claim 3, characterized in that: A fourth hole (125) for detachably connecting the equipotential line (400) is provided on the support seat (121), and a fifth hole (117) for detachably connecting the equipotential line (400) is provided on the top surface (113) of the plug seat flange (112).

10. The plug-in connection device (100) for a valve-side bushing (200) of a high-voltage converter transformer according to any one of claims 1 to 9, characterized in that: The fixed connection is welding, and / or the detachable connection is a bolt connection.

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