A GIS connecting device and GIS system

Abstract

The application relates to a GIS connecting device and a GIS system, the GIS system comprising a GIS and a cable head sleeve pipe, the cable head sleeve pipe being provided with a cable head, the GIS being provided with the GIS connecting device, the GIS connecting device comprising a shell, the shell being provided with a first interface, a second interface, a third interface and a maintenance opening; the shell being provided with a GIS connecting conductor, a cable head connecting conductor and a switching conductor, the switching conductor being provided with a GIS connecting structure, a cable head connecting structure and a pressure testing conductor connecting structure for detachably connecting with the GIS connecting conductor, the cable head connecting conductor and the pressure testing conductor. Compared with the prior art, the application does not need to carry more conductors, so that the labor intensity of the GIS connecting device during the pressure test is relatively reduced, and the work efficiency is relatively improved.

Description

Technical Field

[0001] This invention belongs to the field of GIS technology, specifically relating to a GIS connection device and a GIS system. Background Technology

[0002] A GIS connection device is an essential device for connecting cables and GIS. The invention patent application with publication number CN108828415A discloses a cable terminal connection device for GIS. The GIS cable terminal connection device includes a GIS cylinder. The GIS cylinder has a left opening for connecting to the GIS, an upper opening for connecting to the pressure testing sleeve, a lower opening for connecting to the cable cylinder, and a right opening for connecting instruments. The GIS cylinder contains a GIS connection conductor and a cable head connection conductor.

[0003] Under normal operating conditions, one end of the GIS connecting conductor is connected to the GIS equipment, and the bottom surface of the other end is connected to one end of the cable head connecting conductor. The other end of the cable head connecting conductor is plugged into the cable. When conducting a withstand voltage test on the GIS equipment, the cable head connecting conductor is removed, and the test conductor and the GIS connecting conductor are connected by an intermediate connecting conductor installed between the test conductor and the GIS connecting conductor. When conducting a cable withstand voltage test, the GIS connecting conductor is removed, the cable head connecting conductor is plugged into the cable, and intermediate connecting conductors of different lengths are used to connect the test conductor and the cable head connecting conductor.

[0004] The aforementioned GIS cable termination connection device includes not only GIS connecting conductors and cable head connecting conductors, but also, during the preparation for the cable withstand voltage test, since the GIS connecting conductors have been removed and the intermediate connecting conductors originally connected to the GIS connecting conductors cannot connect the test conductors and the cable head connecting conductors, different intermediate connecting conductors need to be replaced to achieve the connection between the test conductors and the cable head connecting conductors. Therefore, when conducting the withstand voltage test, the aforementioned GIS cable termination connection device needs to carry at least two different intermediate connecting conductors in addition to the original GIS connecting conductors and cable head connecting conductors. Furthermore, when replacing and installing intermediate conductors, the original intermediate connecting conductors need to be completely removed before installing the new ones. In other words, the GIS cable termination connection device requires carrying and replacing a large number of conductors during the withstand voltage test, resulting in high labor intensity and low efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a GIS connection device to solve the problems of high labor intensity and low work efficiency caused by carrying and replacing a large number of conductors during withstand voltage tests in the prior art; the purpose of this invention is also to provide a GIS system to solve the problems of high labor intensity and low work efficiency caused by carrying and replacing a large number of conductors during withstand voltage tests in the prior art.

[0006] To achieve the above objectives, the GIS connection device of the present invention adopts the following technical solution: A GIS connection device includes a housing. The housing has a first interface for docking with GIS equipment, a second interface for docking with a cable head sleeve, a third interface for docking with a test conductor sleeve, and an inspection port for maintenance, disassembly, or installation of various components within the housing. Inside the housing are a GIS connection conductor for detachable connection with the GIS equipment and a cable head connection conductor for detachable connection with a cable head. The housing also includes a transition conductor with GIS connection structure, cable head connection structure, and test conductor connection structure facing the GIS connection conductor, cable head connection conductor, and test conductor for detachable connection with the GIS connection conductor, cable head connection conductor, and test conductor.

[0007] The beneficial effects of the above technical solution are as follows: This invention provides a transition conductor within the housing, and this transition conductor has a GIS connection structure, a cable head connection structure, and a test conductor connection structure for detachable connection with the GIS connection conductor, cable head connection conductor, and test conductor. In this way, under normal operating conditions, the GIS connection device can connect the GIS connection conductor and the cable head connection conductor through the transition conductor. Simultaneously, during withstand voltage testing, the GIS connection device only needs to remove the GIS connection conductor or the cable head connection conductor, and then connect the GIS connection conductor to the test conductor or the cable head connection conductor to the test conductor through the transition conductor. That is, the conductors inherent in the GIS connection device itself can meet the requirements for withstand voltage testing. Therefore, compared with the prior art, the GIS connection device of this invention only needs to remove its own GIS connection conductor or cable head connection conductor during withstand voltage testing, eliminating the need to carry and install additional conductors. This relatively reduces the labor intensity of the GIS connection device during withstand voltage testing, and thus relatively improves work efficiency.

[0008] Furthermore, the cable head connection structure and the test conductor connection structure are arranged symmetrically vertically.

[0009] The beneficial effects of the above technical solution are as follows: the symmetrical arrangement of the cable head connection structure and the test conductor connection structure facilitates the conduction of the test conductor and the cable head connection conductor through the transition conductor, which facilitates the installation of the conductor and helps to improve work efficiency.

[0010] Furthermore, the GIS connection device also includes a transition conductor shielding ball for use with the GIS connection structure, the cable head connection structure, and the pressure test conductor connection structure, respectively.

[0011] The beneficial effects of the above technical solution are as follows: by setting the shielding ball of the transition conductor, not only can the tip discharge of the transition conductor be avoided under normal working conditions, but also the tip discharge of the transition conductor can be avoided during withstand voltage test. That is, the electric field is optimized by the shielding ball, which ensures the installation and use of the GIS connection device.

[0012] Furthermore, the GIS connecting conductor is a plug-in conductor, which can rotate relative to the plug-in axis, and the cable head connection structure is the same as the test conductor connection structure.

[0013] The beneficial effects of the above technical solution are as follows: setting the GIS connection conductor as a plug-in conductor facilitates the installation and disassembly of the GIS connection conductor and GIS equipment; setting the GIS connection conductor to be rotatable relative to the plug-in axis, and making the cable head connection structure the same as the test conductor connection structure, not only can the cable head connection conductor and the test conductor be connected through the cable head connection structure, but the test conductor connection structure can also be connected to the cable head connection conductor and the test conductor by rotating the GIS connection conductor. That is, when installing the adapter conductor, it is no longer necessary to observe whether the installation direction of the adapter conductor cable head connection structure and the test conductor connection structure is correct, which facilitates the installation of the adapter conductor and improves the installation efficiency of the conductor.

[0014] Furthermore, the adapter conductor is a hollow conductor, and the adapter conductor is provided with a GIS connection surface, a test conductor connection surface, and a cable head connection surface that respectively constitute the GIS connection structure, the cable head connection structure, and the test conductor connection structure; the adapter conductor is also provided with a tool opening arranged opposite to the inspection port, and the tool opening is used for disassembling and installing the threaded connection between the adapter conductor and the GIS connection conductor, the cable head connection conductor, and the test conductor.

[0015] The beneficial effects of the above technical solution are as follows: Since the plane is easy to process, the setting of GIS connection surface, pressure test conductor connection surface and cable head connection surface facilitates the processing of the connection structure, and at the same time, it also improves the manufacturing efficiency of the transition conductor; the setting of tool port facilitates the fastening and disassembly of the connection between the transition conductor and each connecting conductor, and by arranging the tool port and the inspection port opposite to each other, it is also convenient to extend the tool port through the inspection port for operation.

[0016] Furthermore, a shielding cover is detachably connected to the tool opening.

[0017] The beneficial effects of the above technical solution are as follows: by installing the shielding cover at the tool opening, the electric field at the tool opening can be optimized, which helps to avoid tip discharge at the tool opening and ensures the safe use of the GIS connection device.

[0018] Furthermore, a cover plate is detachably connected to the inspection port, and a handle is provided on the cover plate.

[0019] The advantages of the above technical solution are as follows: the cover plate installed at the inspection port can maintain a relatively sealed state inside the housing, thereby reducing the impact of external factors on the GIS device and ensuring the normal use of the GIS connection device. At the same time, the handle on the cover plate facilitates its installation or removal.

[0020] Furthermore, the GIS connection device also includes a shielding ball for detachable connection to GIS equipment or cable heads.

[0021] The beneficial effects of the above technical solution are as follows: during the withstand voltage test, the shielding ball of the equipment can reduce the tip discharge of GIS equipment and cable heads, optimize the electric field, and ensure the safe conduct of the withstand voltage test.

[0022] Furthermore, the first interface, the second interface, the third interface, and the inspection port are arranged in a cross shape.

[0023] The beneficial effects of the above technical solution are as follows: it optimizes the arrangement of the first interface, the second interface, the third interface and the maintenance port, facilitates the connection between the housing and the GIS equipment, the cable head sleeve and the pressure test conductor sleeve, and avoids interference between the GIS equipment, the cable head sleeve and the pressure test conductor sleeve.

[0024] To achieve the above objectives, the GIS system of this invention adopts the following technical solution: A GIS system includes a GIS and a cable head sleeve. The cable head sleeve contains a cable head. A GIS connection device is provided between the GIS and the cable head sleeve. The GIS connection device includes a housing. The housing has a first interface for docking with the GIS equipment, a second interface for docking with the cable head sleeve, a third interface for docking with the pressure testing conductor sleeve, and an inspection port for the maintenance, disassembly, or installation of various components within the housing. The housing contains a GIS connection conductor for detachable connection with the GIS equipment and a cable head connection conductor for detachable connection with the cable head. The housing also contains a transition conductor. The transition conductor has GIS connection structures, cable head connection structures, and pressure testing conductor connection structures facing the GIS connection conductor, cable head connection conductor, and pressure testing conductor for detachable connection with these conductors.

[0025] The beneficial effects of the above technical solution are as follows: This invention provides a transition conductor within the housing, and this transition conductor has a GIS connection structure, a cable head connection structure, and a test conductor connection structure for detachable connection with the GIS connection conductor, cable head connection conductor, and test conductor. In this way, under normal operating conditions, the GIS connection device can connect the GIS connection conductor and the cable head connection conductor through the transition conductor. Simultaneously, during withstand voltage testing, the GIS connection device only needs to remove the GIS connection conductor or the cable head connection conductor, and then connect the GIS connection conductor to the test conductor or the cable head connection conductor to the test conductor through the transition conductor. That is, the conductors inherent in the GIS connection device itself can meet the requirements for withstand voltage testing. Therefore, compared with the prior art, the GIS connection device of this invention only needs to remove its own GIS connection conductor or cable head connection conductor during withstand voltage testing, eliminating the need to carry and install additional conductors. This relatively reduces the labor intensity of the GIS connection device during withstand voltage testing, and thus relatively improves work efficiency.

[0026] Furthermore, the cable head connection structure and the test conductor connection structure are arranged symmetrically vertically.

[0027] The beneficial effects of the above technical solution are as follows: the symmetrical arrangement of the cable head connection structure and the test conductor connection structure facilitates the conduction of the test conductor and the cable head connection conductor through the transition conductor, which facilitates the installation of the conductor and helps to improve work efficiency.

[0028] Furthermore, the GIS connection device also includes a transition conductor shielding ball for use with the GIS connection structure, the cable head connection structure, and the pressure test conductor connection structure, respectively.

[0029] The beneficial effects of the above technical solution are as follows: by setting the shielding ball of the transition conductor, not only can the tip discharge of the transition conductor be avoided under normal working conditions, but also the tip discharge of the transition conductor can be avoided during withstand voltage test. That is, the electric field is optimized by the shielding ball, which ensures the installation and use of the GIS connection device.

[0030] Furthermore, the GIS connecting conductor is a plug-in conductor, which can rotate relative to the plug-in axis, and the cable head connection structure is the same as the test conductor connection structure.

[0031] The beneficial effects of the above technical solution are as follows: setting the GIS connection conductor as a plug-in conductor facilitates the installation and disassembly of the GIS connection conductor and GIS equipment; setting the GIS connection conductor to be rotatable relative to the plug-in axis, and making the cable head connection structure the same as the test conductor connection structure, not only can the cable head connection conductor and the test conductor be connected through the cable head connection structure, but the test conductor connection structure can also be connected to the cable head connection conductor and the test conductor by rotating the GIS connection conductor. That is, when installing the adapter conductor, it is no longer necessary to observe whether the installation direction of the adapter conductor cable head connection structure and the test conductor connection structure is correct, which facilitates the installation of the adapter conductor and improves the installation efficiency of the conductor.

[0032] Furthermore, the adapter conductor is a hollow conductor, and the adapter conductor is provided with a GIS connection surface, a test conductor connection surface, and a cable head connection surface that respectively constitute the GIS connection structure, the cable head connection structure, and the test conductor connection structure; the adapter conductor is also provided with a tool opening arranged opposite to the inspection port, and the tool opening is used for disassembling and installing the threaded connection between the adapter conductor and the GIS connection conductor, the cable head connection conductor, and the test conductor.

[0033] The beneficial effects of the above technical solution are as follows: Since the plane is easy to process, the setting of GIS connection surface, pressure test conductor connection surface and cable head connection surface facilitates the processing of the connection structure, and at the same time, it also improves the manufacturing efficiency of the transition conductor; the setting of tool port facilitates the fastening and disassembly of the connection between the transition conductor and each connecting conductor, and by arranging the tool port and the inspection port opposite to each other, it is also convenient to extend the tool port through the inspection port for operation.

[0034] Furthermore, a shielding cover is detachably connected to the tool opening.

[0035] The beneficial effects of the above technical solution are as follows: by installing the shielding cover at the tool opening, the electric field at the tool opening can be optimized, which helps to avoid tip discharge at the tool opening and ensures the safe use of the GIS connection device.

[0036] Furthermore, a cover plate is detachably connected to the inspection port, and a handle is provided on the cover plate.

[0037] The advantages of the above technical solution are as follows: the cover plate installed at the inspection port can maintain a relatively sealed state inside the housing, thereby reducing the impact of external factors on the GIS device and ensuring the normal use of the GIS connection device. At the same time, the handle on the cover plate facilitates its installation or removal.

[0038] Furthermore, the GIS connection device also includes a shielding ball for detachable connection to GIS equipment or cable heads.

[0039] The beneficial effects of the above technical solution are as follows: during the withstand voltage test, the shielding ball of the equipment can reduce the tip discharge of GIS equipment and cable heads, optimize the electric field, and ensure the safe conduct of the withstand voltage test.

[0040] Furthermore, the first interface, the second interface, the third interface, and the inspection port are arranged in a cross shape.

[0041] The beneficial effects of the above technical solution are as follows: it optimizes the arrangement of the first interface, the second interface, the third interface and the maintenance port, facilitates the connection between the housing and the GIS equipment, the cable head sleeve and the pressure test conductor sleeve, and avoids interference between the GIS equipment, the cable head sleeve and the pressure test conductor sleeve. Attached Figure Description

[0042] Figure 1 This is a state diagram of the GIS connection device in this invention when it is working normally; Figure 2 This is a schematic diagram of the housing in the GIS connection device of the present invention; Figure 3 yes Figure 2 A schematic diagram of the first interface in the middle; Figure 4 yes Figure 2 A schematic diagram of the second interface in the middle; Figure 5 yes Figure 2 A schematic diagram of the third interface in the middle; Figure 6 yes Figure 2 Schematic diagram of the central inspection port; Figure 7 This is a schematic diagram of the inspection port cover in the GIS connection device of the present invention; Figure 8 This is a partial structural diagram of the transition conductor in the GIS connection device of the present invention; Figure 9 This is a cross-sectional view of the transition conductor in the GIS connection device of the present invention; Figure 10 yes Figure 9Sectional view along axis AA; Figure 11 This is a structural diagram of the GIS connecting conductor in the GIS connecting device of the present invention; Figure 12 yes Figure 11 The right view; Figure 13 This is a structural diagram of the supporting screw in the GIS connection device of the present invention; Figure 14 yes Figure 13 The left view; Figure 15 This is a structural diagram of the cable head connection conductor in the GIS connection device of the present invention; Figure 16 yes Figure 15 The left view; Figure 17 This is a schematic diagram of the transition conductor shielding ball in the GIS connection device of the present invention; Figure 18 yes Figure 17 The left view; Figure 19 This is a schematic diagram of the GIS shielding ball in the GIS connection device of the present invention; Figure 20 This is a schematic diagram of the cable head shielding ball in the GIS connection device of the present invention; Figure 21 This is a connection status diagram of the GIS connection device in this invention during the GIS equipment pressure test; Figure 22 This is a connection status diagram of the GIS connection device in this invention during cable withstand voltage testing.

[0043] In the diagram: 100, Housing; 110, First Interface; 111, First Connecting Flange; 120, Second Interface; 121, Second Connecting Flange; 130, Third Interface; 131, Third Connecting Flange; 140, Inspection Port; 141, Fourth Connecting Flange; 200, Inspection Port Cover; 210, First Handle; 300, Cable Head; 400, Cable Head Sleeve; 500, Adapter Conductor; 510, Top Surface; 520, Bottom Surface; 530, Side Surface; 540, Tool Port; 550, Shielding Cover; 600, G IS connecting conductor; 610, first plug-in terminal; 620, first connection terminal; 630, support bolt; 631, GIS connection terminal; 632, conductor connection terminal; 700, cable head connecting conductor; 710, second plug-in terminal; 720, second connection terminal; 800, transition conductor shielding ball; 900, GIS shielding ball; 1000, cable head shielding ball; 1100, test conductor; 1200, test conductor sleeve; 1300, insulator; 1400, third interface cover plate; 1410, second handle. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0046] It should be noted that, in specific embodiments of the present invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the use of phrases such as "comprising a…" to define an element does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] In the description of this invention, unless otherwise explicitly specified and limited, the term "provided with" should be interpreted broadly. For example, the object "provided with" can be a part of the body, or it can be separately arranged from the body and connected to the body. This connection can be a detachable connection or a non-detachable connection. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0049] The present invention will be further described in detail below with reference to the embodiments.

[0050] Embodiment 1 of the GIS connection device in this invention: like Figure 1 As shown, the GIS connection device includes a housing 100, which is a four-way housing 100 and is cross-shaped. The housing 100 includes four straight cylindrical sections, and any two adjacent straight cylindrical sections are arranged perpendicularly. Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the ends of the four straight sections are respectively provided with a first interface 110 for docking with GIS equipment, a second interface 120 for docking with cable head bushing 400, a third interface 130 for docking with test conductor bushing 1200, and an inspection port 140 for inspection, disassembly, or installation of various components within the housing 100. That is, the first interface 110, second interface 120, third interface 130, and inspection port 140 are arranged in a cross shape. A first connecting flange 111, a second connecting flange 121, a third connecting flange 131, and a fourth connecting flange 141 are respectively provided at the first interface 110, second interface 120, third interface 130, and inspection port 140. The first interface 110 docks with the GIS equipment through the first connecting flange 111 and the insulator 1300. The GIS connection device also includes an inspection port cover 200 and a third interface cover 1400, wherein the third interface cover 1400 is installed at the third interface 130 via a third connecting flange 131, and the inspection port cover 200 is installed at the inspection port 140 via a fourth connecting flange 141. Two first handles 210 are symmetrically arranged on the outer circumferential surface of the inspection port 140 end cover. Figure 7 As shown, two second handles 1410 are also symmetrically arranged on the outer periphery of the third interface cover 1400. The arrangement of the first handle 210 and the second handle 1410 facilitates the transportation of the inspection port cover 200 and the third interface cover 1400, as well as the adjustment of their positions during installation. In addition, a test conductor 1100 is provided inside the test conductor sleeve 1200, and a cable head 300 is provided inside the cable head sleeve 400.

[0051] like Figure 1 As shown, the housing 100 contains a transition conductor 500, a GIS connection conductor 600 for detachable connection with GIS equipment, and a cable head connection conductor 700 for detachable connection with cable head 300. Among them, as shown... Figure 11 and Figure 12As shown, the GIS connecting conductor 600 has a first connecting end 620 and a first plug-in end 610 at both ends. The GIS connecting conductor 600 achieves a detachable connection with the GIS equipment through the plug-in of the insulator 1300 via the first plug-in end 610, and the GIS connecting conductor 600 can rotate around the plug-in axis. The GIS connecting conductor 600 is a hollow conductor, as shown... Figure 1 , Figure 13 , Figure 14 and Figure 21 As shown, in normal operation and during withstand voltage testing of the GIS equipment, the GIS connecting conductor 600 is equipped with a support bolt 630. The two ends of the support bolt 630 are respectively provided with a GIS connecting end 631 and a conductor connecting end 632. During installation of the GIS connecting conductor, the support bolt 630 is first connected to the GIS equipment via the threaded connection between the GIS connecting end 631 and the insulator 1300. Then, the GIS connecting conductor 600 is connected to the GIS equipment via insertion into the insulator 1300. During the insertion process, the support bolt 630 is inserted into the GIS connecting conductor 600. After the GIS connecting conductor 600 is in place, the support bolt 630 is connected to the GIS connecting conductor 600 via a screw passing through the first connecting end 620 and the threaded connection between the screw and the conductor connecting end 632. Thus, the support bolt 630 not only guides the insertion of the GIS connecting conductor 600 but also strengthens the fixing effect between the GIS connecting conductor 600 and the GIS equipment.

[0052] like Figure 15 and Figure 16 As shown, the cable head connecting conductor 700 is also a hollow conductor. The two ends of the cable head connecting conductor 700 are respectively provided with a second plug-in end 710 and a second connection end 720. The cable head connecting conductor 700 is connected to the cable head 300 through the plug-in of the second plug-in end 710, thus realizing a detachable connection with the cable head 300.

[0053] like Figure 8 , Figure 9 and Figure 10As shown, the transition conductor 500 is also a hollow conductor. The transition conductor 500 has a top surface 510, a bottom surface 520, and a side surface 530. Each of the top surface 510, bottom surface 520, and side surface 530 has a flange structure. The top surface 510, bottom surface 520, and side surface 530, through the cooperation of the flange structure and screws, respectively connect the transition conductor 500 to the first connection end 620 of the GIS connecting conductor 600, the second connection end 720 of the cable head connecting conductor 700, and the test conductor 1100. That is, the top surface 510, bottom surface 520, and side surface 530 are all connection surfaces, and the connection... The surface includes a GIS connection surface, a test conductor connection surface, and a cable head connection surface. Each connection surface constitutes a connection structure for connecting the transfer conductor 500 with the GIS connection conductor 600, the cable head connection conductor 700, and the test conductor 1100. Specifically, the connection structure includes a GIS connection structure, a cable head connection structure, and a test conductor connection structure facing the GIS connection conductor 600, the cable head connection conductor 700, and the test conductor 1100 for detachable connection. Specifically, the top surface 510 constitutes a test conductor connection structure during cable withstand voltage testing; the bottom surface 520 constitutes a test conductor connection structure during GIS equipment withstand voltage testing; the bottom surface 520 constitutes a cable head connection structure when the GIS connection device is operating normally or during cable withstand voltage testing; and the side surface 530 constitutes a GIS connection structure during GIS equipment withstand voltage testing. The cable head connection structure and the pressure test conductor connection structure are arranged symmetrically, and they are identical. This not only facilitates the connection of the adapter conductor 500 with other components, but also eliminates the need to check the installation orientation of the cable head connection structure and the pressure test conductor connection structure during the installation of the adapter conductor 500, thus improving work efficiency. Furthermore, the adapter conductor 500 has a front and a rear section, both of which are smooth flat surfaces.

[0054] In addition, such as Figure 10 As shown, the adapter conductor 500 is also provided with a tool opening 540 arranged opposite to the inspection port 140, and the tool opening 540 is also arranged opposite to the side 530. The tool opening 540 is used for the disassembly and installation of screw connections between the adapter conductor 500 and the GIS connection conductor 600, the cable head connection conductor 700, and the test conductor 1100. A shielding cover 550 is screwed to the tool opening 540. Figure 1 As shown), the shielding cover 550 can optimize the electric field and prevent tip discharge at the tool opening 540.

[0055] like Figure 17 , Figure 18 , Figure 19 and Figure 20As shown, the GIS connection device also includes a transition conductor shielding ball 800 and an equipment shielding ball. The transition conductor shielding ball 800 is screwed to the top surface 510 during normal operation of the GIS connection device or during GIS equipment withstand voltage testing. During cable withstand voltage testing, the transition conductor shielding ball 800 is screwed to the side surface 530. The equipment shielding ball includes a GIS shielding ball 900 and a cable head shielding ball 1000. During cable withstand voltage testing, the GIS shielding ball 900 is inserted into the insulator 1300, and the cable head shielding ball 1000 is inserted into the cable head 300 during GIS equipment withstand voltage testing. The transition conductor shielding ball 800, GIS shielding ball 900, and cable head shielding ball 1000 all optimize the electric field, reduce tip discharge during the use of the GIS connection device, and ensure the safe use of the GIS connection device.

[0056] The working principle of the GIS connection device in this invention is as follows: like Figure 1 As shown, before the GIS connection device operates normally, the support bolt 630 is first connected to the insulator 1300 via a threaded connection. Then, the GIS connection conductor 600 is inserted into the insulator 1300, and the support bolt 630 is inserted into the GIS connection conductor 600 during the insertion process. After the GIS connection conductor 600 is inserted, the support bolt 630 and the GIS connection conductor 600 are fixed together with screws, and the installation of the GIS connection conductor 600 is completed. Then, the cable head connection conductor 700 is inserted into the cable head 300. Finally, the adapter conductor 500, which has an adapter conductor shielding ball 800 mounted on the top surface 510, is installed between the GIS connection conductor 600 and the cable head connection conductor 700, and the threaded connection between the adapter conductor 500 and the GIS connection conductor 600 and the cable head connection conductor 700 is tightened through the tool port 540. After all the components inside the housing 100 are installed, the shielding cover 550 and the inspection port cover 200 are installed in sequence.

[0057] like Figure 21As shown, when preparing for the GIS equipment withstand voltage test, firstly, the SF6 gas in the GIS connection device is discharged, and a certain amount of SF6 gas in the adjacent device is also discharged. After the SF6 gas is discharged, the third interface cover plate 1400 and the inspection port cover plate 200 are removed, and the shielding cover 550 at the tool port 540 is removed. The screws connecting the adapter conductor 500 to the cable head connecting conductor 700 are loosened through the tool port 540, the cable head connecting conductor 700 is removed, and the cable head connecting conductor 700 is moved out of the housing 100 through the inspection port 140. Then, the cable head shielding ball 1000 is inserted into the cable head 300, and the GIS connection conductor 600, together with the adapter conductor 500, is rotated 180° around the axis of the GIS connection conductor 600. At this time, the adapter conductor shielding ball 800 installed on the top surface 510 is arranged opposite to the cable head shielding ball 1000. Further, the test conductor sleeve 1200 is hoisted and connected to the third interface 130. The test conductor 1100 is then connected to the transition conductor 500. At this point, the GIS equipment is connected to the test conductor 1100, allowing voltage to be applied to the GIS equipment through the test conductor 1100. Further, the shielding cover 550 and the inspection port cover 200 are installed sequentially. After the inspection port cover 200 is installed, SF6 gas at rated pressure is introduced into the GIS connection device and adjacent devices. Finally, a high voltage is applied to conduct a withstand voltage test on the GIS equipment. After the withstand voltage test of the GIS equipment is completed, the high-voltage power supply is disconnected, and all conductors and the casing 100 are grounded to eliminate any residual charge from the withstand voltage test.

[0058] like Figure 22As shown, when preparing for the cable withstand voltage test, firstly, the SF6 gas in the GIS connection device is discharged, and a certain amount of SF6 gas in the adjacent device is also discharged. After the SF6 gas is discharged, the access cover 200 and the shielding cover 550 are disassembled in sequence. The screws of the connecting support bolt 630 and the GIS connecting conductor 600 are removed through the tool port 540, and the GIS connecting conductor 600 is removed from the insulator 1300. Then, the GIS connecting conductor 600 and the transition conductor 500 are moved out of the housing 100 together through the access port 140. Next, the support bolt 630 is removed, and it is also moved out of the housing 100 through the access port 140. The GIS shielding ball 900 is then inserted into the insulator 1300. Then, the GIS connecting conductor 600 and the transition conductor 500 are separated, and the transition conductor shielding ball 800 installed on the top surface 510 is removed and installed on the side surface 530. Subsequently, the cable head connecting conductor 700 is inserted into the cable head 300, and the transition conductor 500 is installed between the cable head connecting conductor 700 and the test conductor 1100, with the transition conductor shielding ball 800 and the GIS shielding ball 900 arranged opposite each other. After the installation of all components inside the housing 100 is completed, the shielding cover 550 and the inspection port cover 200 are installed in sequence. Then, SF6 gas at the rated pressure is filled into the GIS connection device and adjacent devices. After the SF6 gas is filled, a high voltage is applied to conduct a withstand voltage test on the cable head 300. After the cable withstand voltage test is completed, the high voltage power supply is disconnected, and all conductors and the housing 100 are grounded to eliminate the residual charge from the withstand voltage test. Then, the SF6 gas is recovered, and the equipment is restored to its initial operating state.

[0059] This invention incorporates a transition conductor within the housing, oriented towards the GIS connection conductor, cable head connection conductor, and pressure test conductor for detachable connection. Under normal operating conditions, the GIS connection device can connect the GIS connection conductor and the cable head connection conductor via the transition conductor. During withstand voltage testing, only the GIS connection conductor or cable head connection conductor needs to be removed, and the connection between the GIS connection conductor and the pressure test conductor, or vice versa, is established via the transition conductor. In other words, the conductors inherent in the GIS connection device itself are sufficient for withstand voltage testing. Therefore, compared to existing technologies, the GIS connection device of this invention only requires the removal of its own GIS connection conductor or cable head connection conductor during withstand voltage testing, eliminating the need to carry and install additional conductors. This significantly reduces the workload during withstand voltage testing and improves work efficiency.

[0060] Embodiment 2 of the GIS connection device in this invention: The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the GIS connection device includes a transition conductor shielding ball 800 for detachable connection with the transition conductor 500, and a device shielding ball for detachable connection with the GIS equipment or cable head 300. That is, the electric field is optimized through the transition conductor shielding ball 800 and the device shielding ball to prevent tip discharge of the transition conductor 500, the GIS equipment, and the cable head 300. In this embodiment, however, all surfaces of the transition conductor 500, the connection points between the GIS equipment and the GIS connection conductor 600, and the connection points between the cable head 300 and the cable head connection conductor 700 are designed with smooth structures. This smooth structure optimizes the electric field and prevents tip discharge.

[0061] Embodiment 3 of the GIS connection device in this invention: The difference between this embodiment and Embodiment 1 is that in Embodiment 1, an access cover 200 is detachably connected to the access port 140, and the access cover 200 is provided with a handle, which allows the access cover 200 to be moved during installation and removal. In this embodiment, the access cover 200 is moved by lifting and moving the access cover 200 itself during installation and removal.

[0062] Embodiment 4 of the GIS connection device in this invention: The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the GIS connecting conductor 600 is a plug-in conductor, meaning that the GIS connecting conductor 600 is plugged into the GIS device and can rotate relative to the plug-in axis. In this embodiment, however, the GIS connecting conductor 600 is connected to the GIS device via screws, meaning that the GIS connecting conductor 600 cannot rotate.

[0063] Embodiment 5 of the GIS connection device in this invention: The difference between this embodiment and Embodiment 1 is that in Embodiment 1, a shielding cover 550 is detachably connected to the tool opening 540, and the shielding cover 550 is used to optimize the electric field and prevent tip discharge at the tool opening 540. In this embodiment, the tool opening 540 is rounded, and the electric field is optimized through the structure of the tool opening 540 itself to prevent tip discharge at the tool opening 540.

[0064] Embodiment 6 of the GIS connection device in this invention: The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the adapter conductor 500 is a hollow conductor, and the GIS connection conductor 600, cable head connection conductor 700, and pressure testing conductor 1100 are all detachably connected to the adapter conductor 500 via bolts penetrating the hollow housing 100. In this embodiment, however, the adapter conductor 500 is a solid conductor, meaning it does not have a tool opening 540, and the GIS connection conductor 600, cable head connection conductor 700, and pressure testing conductor 1100 can all be detachably connected to the adapter conductor 500 via plug-in connections.

[0065] Embodiment 7 of the GIS connection device in this invention: The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the cable head connection structure and the test conductor connection structure are the same, that is, the adapter conductor 500 can be connected to the test conductor through the cable head connection structure and to the cable head connection conductor 700 through the test conductor connection structure. However, in this embodiment, the adapter conductor 500 can only be connected to the cable head connection conductor 700 through the cable head connection structure and can only be connected to the test conductor 1100 through the test conductor connection structure.

[0066] Embodiment 8 of the GIS connection device in this invention: The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the cable head connection structure and the pressure test conductor connection structure are arranged symmetrically vertically. In this embodiment, the cable head connection structure and the pressure test conductor connection structure are arranged in a staggered symmetrical manner.

[0067] An embodiment of the GIS system in this invention: The GIS system includes a GIS and a cable head sleeve 400. The cable head sleeve 400 is provided with a cable head 300. A GIS connection device is provided between the GIS and the cable head sleeve 400. The specific structure of the GIS connection device is the same as that of the GIS connection device in the above embodiment of the GIS connection device, and will not be repeated here.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A GIS connection conductor between a transition conductor and a GIS device, characterized in that, The transition conductor (500) has a GIS connection structure, a cable head connection structure, and a test conductor connection structure facing the GIS connection conductor (600), the cable head connection conductor (700), and the test conductor (1100) for detachable connection with the GIS connection conductor (600), the cable head connection conductor (700), and the test conductor (1100). The cable head connection structure and the test conductor connection structure are arranged symmetrically vertically. The GIS connection structure, the cable head connection structure, and the test conductor connection structure are also used to connect with the transition conductor shielding ball (800) that is matched with them. The GIS connection conductor (600) is a plug-in conductor that can rotate relative to the plug-in axis. One end of the GIS connection conductor is a first plug-in end, and the other end is provided with a first connection end for detachable connection with the GIS connection structure of the transition conductor. The GIS connection conductor is provided with a support bolt. The two ends of the support bolt are respectively provided with a GIS connection end and a conductor connection end. The GIS connection end is used to connect with the GIS equipment. The GIS connection conductor is threadedly connected to the conductor connection end by a screw passing through the first connection end.

2. The GIS connection conductor between the adapter conductor and the GIS equipment according to claim 1, characterized in that, The cable head connection structure is the same as the test conductor connection structure.

3. The GIS connection conductor between the adapter conductor and the GIS equipment according to claim 1, characterized in that, The adapter conductor (500) is a hollow conductor. The adapter conductor (500) is provided with a GIS connection surface, a test conductor connection surface, and a cable head connection surface that respectively constitute the GIS connection structure, the cable head connection structure, and the test conductor connection structure. The adapter conductor (500) is also provided with a tool port (540), which is used for disassembling and installing the threaded connection between the adapter conductor (500) and the GIS connection conductor (600), the cable head connection conductor (700), and the test conductor (1100).

4. The GIS connection conductor between the adapter conductor and the GIS equipment according to claim 3, characterized in that, A shielding cover (550) is detachably connected to the tool port (540).

5. The GIS connection conductor between the adapter conductor and the GIS equipment according to any one of claims 1 to 4, characterized in that, It also includes a device shielding ball that is positioned opposite the transition conductor shielding ball.

6. A GIS system, comprising a GIS and a cable head sleeve (400), wherein a cable head (300) is provided in the cable head sleeve (400), and a GIS connection device is provided between the GIS and the cable head sleeve (400), characterized in that, The GIS connection device includes a housing (100), which has a first interface (110) for docking with GIS equipment, a second interface (120) for docking with a cable head sleeve (400), a third interface (130) for docking with a test conductor sleeve (1200), and a maintenance port (140) for maintenance, disassembly, or installation of various components within the housing (100). The housing (100) contains a GIS connection conductor (600) for detachable connection with GIS equipment and a cable head connection conductor (700) for detachable connection with a cable head (300). The housing (100) also contains a transition conductor (500) which faces the GIS connection conductor (600), the cable head connection conductor (700), and the test conductor (1100) for docking with the GIS connection conductor (600), the cable head connection conductor (700), and the test conductor (1100). The GIS connection structure, cable head connection structure, and test conductor connection structure are detachably connected to the cable head connecting conductor (700) and the test conductor (1100). The cable head connecting structure and the test conductor connection structure are arranged symmetrically. The GIS connection structure, cable head connecting structure, and test conductor connection structure are also used to connect with the corresponding adapter conductor shielding ball (800). The GIS connection conductor (600) is a plug-in conductor that can rotate relative to the plug-in axis. One end of the GIS connection conductor is a first plug-in end, and the other end is provided with a first connection end for detachable connection with the GIS connection structure of the adapter conductor. The GIS connection conductor is provided with a support bolt. The two ends of the support bolt are respectively provided with a GIS connection end and a conductor connection end. The GIS connection end is used to connect with the GIS equipment. The GIS connection conductor is threadedly connected to the conductor connection end by a screw passing through the first connection end.

7. The GIS system according to claim 6, characterized in that, The cable head connection structure is the same as the test conductor connection structure.

8. The GIS system according to claim 6, characterized in that, The adapter conductor (500) is a hollow conductor. The adapter conductor (500) is provided with a GIS connection surface, a test conductor connection surface, and a cable head connection surface that respectively constitute the GIS connection structure, the cable head connection structure, and the test conductor connection structure. The adapter conductor (500) is also provided with a tool port (540) arranged opposite to the inspection port (140). The tool port (540) is used for disassembling and installing the threaded connection between the adapter conductor (500) and the GIS connection conductor (600), the cable head connection conductor (700), and the test conductor (1100).

9. The GIS system according to claim 8, characterized in that, A shielding cover (550) is detachably connected to the tool port (540).

10. The GIS system according to any one of claims 6 to 9, characterized in that, The inspection port (140) is detachably connected to a cover plate, and the cover plate is provided with a handle.

11. The GIS system according to any one of claims 6 to 9, characterized in that, The GIS connection device also includes a device shield ball for detachable connection to the GIS equipment or cable head (300).

12. The GIS system according to any one of claims 6 to 9, characterized in that, The first interface (110), the second interface (120), the third interface (130), and the inspection port (140) are arranged in a cross shape.

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