Core-through conductor, voltage-withstanding tool and application method of voltage-withstanding tool

Abstract

The invention relates to the technical field of GIS voltage withstanding, in particular to a cross-core conductor, a voltage withstanding tool and a using method of the voltage withstanding tool, the cross-core conductor comprises a connecting body, and a connecting hole is formed in the middle of the connecting body; a plurality of contact fingers are mounted on the inner wall of the connecting hole; connecting blocks are arranged at the upper ends of the connecting bodies; a connecting disc is arranged at the lower end of the connector. The arrangement of the connecting holes facilitates the connection of insulators; the arrangement of the connecting blocks facilitates the connection of conductors; the arrangement of the connecting disc facilitates the connection of the tulip contact; the structure is simple, connection is convenient, single-phase voltage withstanding can be completed through the same conductor, the number of times of dismounting and mounting of the sleeve is reduced, the working efficiency is improved, and the application range is widened.

Description

Technical Field

[0001] The invention relates to the field of GIS pressure-resistant technology, and in particular to a through-conductor, a pressure-resistant tooling and a method for using the pressure-resistant tooling. Background Art

[0002] The on-site withstand voltage test of GIS cable interval is an insulation withstand voltage performance test of the interval parts including cable terminals at the GIS equipment installation site. Its purpose is to check whether there are insulation defects in the GIS cable interval during the installation process and ensure that the equipment can withstand the normal operating voltage of the system and possible overvoltage after being put into operation.

[0003] When the cable interval of the sub-box GIS is subjected to on-site pressure resistance, the pressure-resistant tooling needs to frequently remove the casing and the internal conductor of the casing (the casing and internal conductor between the pressure-resistant interval and the pressure-resistant cable need to be removed once). Figure 1 and Figure 2 As shown, the lower end interface of the four-way 11 is connected to the cable, the insulator 10 is installed at the left end interface of the four-way 11, the T-type connecting plate 15 is connected to the upper end interface of the bushing 3 through bolts and flanges, the lower end of the T-type connecting plate 15 is connected to the long conductor 16, the lower end of the long conductor 16 is installed with a plum blossom contact 13, and the short conductor 18 is installed on the insulator 10, and then the bushing 3, the long conductor 16 and the plum blossom contact 13 are hoisted at the upper end opening of the four-way 11, the bushing 3 is connected to the four-way 11 by bolts, and then the plum blossom contact 13 and the short conductor 18 are connected by a connector 19, the right opening of the four-way 11 is sealed, and after the sealing and installation, SF6 is filled in the four-way 11 to the rated pressure of 0.4Mpa, and the pressure resistance interval is completed; the interval pressure resistance is completed After that, recover the gas, remove the right side sealing plate and bushing 3 of the four-way 11; after hoisting the bushing 3 down and removing the T-type terminal block 15 and the flange; remove the long conductor 16, and install the long conductor 2 17 (with a short connector 20 installed at one end) on the T-type connecting plate 15; connect the T-type connecting plate 15 with the bushing 3; remove the connector 19 and the short conductor 18; install the plum blossom contact 13 on the cable at the lower end opening of the four-way 11; install the bushing 3 and the internal long conductor 2 17 on the four-way 11 together, and insert the short connector 20 on the long conductor 2 17 into the plum blossom contact 13 connected to the bottom cable; install the sealing plate at the right side opening of the four-way 11, and fill it with SF6 to the rated pressure of 0.4Mpa, and the pressure-resistant cable.

[0004] It can be seen from the above steps that in the prior art, the sleeve 3 and the long conductor 16 and the long conductor 2 17 on the sleeve 3 need to be repeatedly disassembled and assembled twice to complete the single-phase withstand voltage. The operation is cumbersome, time-consuming and labor-intensive, affecting work efficiency and having a small scope of application. Summary of the invention

[0005] In view of the problem that in the prior art, the bushing 3 and the long conductor 16 and the long conductor 2 17 on the bushing 3 need to be repeatedly disassembled and assembled twice to complete the single-phase withstand voltage, the operation is cumbersome, time-consuming and labor-intensive, affects the work efficiency, and has a small scope of application, the present invention provides a through-conductor, a withstand voltage tooling and a method for using the withstand voltage tooling.

[0006] In order to solve the above problems, the technical solution adopted by the present invention is: A through-conductor includes a connector, a connecting hole is provided in the middle of the connector, a plurality of contact fingers are installed on the inner wall of the connecting hole, a connecting block is provided at the upper end of the connector, and a connecting plate is provided at the lower end of the connector. The connection hole is provided to facilitate the connection of the insulator; the connection block is provided to facilitate the connection of the conductor; the connecting plate is provided to facilitate the connection of the plum blossom contact; the structure is simple, the connection is convenient, the single-phase withstand voltage can be completed by using the same conductor, the number of times the bushing is disassembled and assembled is reduced, the working efficiency is improved, and the scope of application is expanded.

[0007] Preferably, two guide sleeves are further arranged in the connecting hole; the two guide sleeves are respectively arranged on both sides of the axial direction of the plurality of contact fingers.

[0008] Preferably, the connection block is provided with a threaded blind hole, and the connection plate is provided with a connecting through hole. The threaded blind hole is provided to facilitate the connection of the first joint with bolts, and the connecting through hole is provided to facilitate the connection of the third joint with bolts.

[0009] Preferably, a first shielding connection hole is provided in the middle of the connection block, and a second shielding connection hole is provided in the middle of the connection plate, so that the shielding body can be conveniently installed by using the first shielding connection hole and the second shielding connection hole.

[0010] A pressure-resistant tooling, including the above-mentioned through-core conductor; the pressure-resistant tooling also includes a conductor; the upper end of the conductor is connected to a T-shaped connecting plate; the lower end of the conductor is threadedly connected to a first joint; the first joint is connected to a connecting block through a bolt; a second joint is inserted into the connecting hole; the second joint abuts against a contact finger; the end of the second joint away from the connecting hole is connected to an insulator; the insulator is installed at the left interface of the four-way; the conductor is inserted into the four-way from the upper interface of the four-way. When in use, the T-shaped connecting plate is installed at the upper opening of the bushing through bolts and flanges, and the conductor can be used to complete the single-phase interval pressure resistance.

[0011] Preferably, the pressure-resistant tooling also includes a third joint; one end of the third joint is connected to the connection plate by bolts; the end of the third joint away from the connection plate is installed on the plum blossom contact; the plum blossom contact is installed at the lower end interface of the four-way. The same conductor pressure-resistant cable can be used, avoiding the disassembly and assembly of the casing, improving work efficiency and expanding the scope of application.

[0012] Preferably, the pressure-resistant tooling further comprises a shielding body, which is installed in the first shielding connection hole and the second shielding connection hole by bolts and is installed at the connection between the first joint, the third joint and the through-conductor.

[0013] A method for using a pressure-resistant tooling, using the pressure-resistant tooling, comprises the following steps: S1. Install a T-shaped connecting plate on the upper end of the conductor; thread the lower end of the conductor to the first joint; then install the T-shaped connecting plate on the casing by bolts, and install the conductor in the casing; S2. Install an insulator at the left interface of the cross; then install the second joint on the insulator with bolts; S3. Lift the casing and install it at the upper interface of the four-way through bolts; at the same time, insert the conductor into the four-way; S4, placing the through-conductor into the cross-piece, and inserting the second joint into the connecting hole of the through-conductor; connecting the first joint to the connecting block of the through-conductor by means of bolts; S5. Clean the inside of the cross-piece; install the flange at the right interface of the cross-piece; seal and ground the lower interface of the cross-piece; then fill the cross-piece with SF6 to the rated gas pressure of 0.4Mpa and the pressure-resistant interval.

[0014] Preferably, after step S5 is completed, step S6 is also included: recovering gas and removing the right sealing plate of the cross-way; S7, remove the through-conductor and the second joint; install a plum blossom contact at the lower end interface of the cross; install a third joint on the plum blossom contact; the third joint is connected to the connection plate of the through-conductor by bolts; the connection block of the through-conductor is connected to the first joint by bolts; S8. Install the right side cover of the four-way valve; fill the four-way valve with SF6 to the rated pressure of 0.4Mpa and use pressure-resistant cable.

[0015] Through the reasonable setting of the through-conductor, the single-phase withstand voltage can be completed with the same conductor, avoiding repeated disassembly and assembly of the bushing. It is simple to operate and easy to install, saving time and effort, facilitating the implementation of on-site emergency projects, increasing the scope of application and improving work efficiency.

[0016] It can be seen from the above technical scheme that the advantages of the present invention are: through the reasonable setting of the through-core conductor, the single-phase withstand voltage can be completed using the same conductor, avoiding repeated disassembly and assembly of the bushing, simple operation, convenient installation, saving time and effort, facilitating the implementation of on-site emergency projects, increasing the scope of application, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the prior art when the interval withstands pressure.

[0019] Figure 2 It is a schematic diagram of the structure of the cable under pressure in the prior art.

[0020] Figure 3 The structure of the embodiment 1 of the present invention is shown in FIG. Figure 1 ; Figure 4 The structure of the embodiment 1 of the present invention is shown in FIG. Figure 2 ; Figure 5 It is a schematic cross-sectional structural diagram of embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the structure of Example 2 of the present invention when the interval withstands pressure; Figure 7 for Figure 6 The enlarged schematic diagram at A in the middle; Figure 8 This is a schematic diagram of the structure of the cable under pressure according to Embodiment 2 of the present invention; Fig. 9 for Figure 8 Enlarged schematic diagram of point B in the middle.

[0021] Description of main reference numerals 1-connector, 2-contact finger, 3-bushing, 4-connection block, 5-connection plate, 6-guide sleeve, 7-conductor, 8-first joint, 9-second joint, 10-insulator, 11-cross, 12-third joint, 13-plum blossom contact, 14-shielding body, 15-T-type connecting plate, 16-long conductor 1, 17-long conductor 2, 18-short conductor, 19-connector, 20-short joint; 101 - connection hole; 401 - threaded blind hole, 402 - first shielding connection hole; 501 - connection through hole, 502 - second shielding connection hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0023] Example 1 like Figure 3-5 As shown, a through-conductor comprises a connector 1, a connecting hole 101 is arranged in the middle of the connector 1; a plurality of contact fingers 2 are installed on the inner wall of the connecting hole 101, and two guide sleeves 6 are also arranged in the connecting hole 101; the two guide sleeves 6 are respectively arranged on both sides of the axial direction of the plurality of contact fingers 2. A connecting block 4 is arranged at the upper end of the connector 1; a connecting plate 5 is arranged at the lower end of the connector 1. A threaded blind hole 401 is arranged on the connecting block 4, and a first shielding connecting hole 402 is arranged in the middle of the connecting block 4; a connecting through hole 501 is arranged on the connecting plate 5, and a second shielding connecting hole 502 is arranged in the middle of the connecting plate 5, so as to facilitate the installation of the shielding body 14 by using the first shielding connecting hole 402 and the second shielding connecting hole 502. The provision of the threaded blind hole 401 facilitates the connection of the first joint 8 by bolts; the provision of the connecting through hole 501 facilitates the connection of the third joint 12 by bolts.

[0024] The setting of the connecting hole 101 facilitates the connection of the insulator 10; the setting of the connecting block 4 facilitates the connection of the conductor 7; the setting of the connecting plate 5 facilitates the connection of the plum blossom contact 13; the structure is simple and the connection is convenient, and the single-phase withstand voltage can be completed using the same conductor 7, which reduces the number of times the bushing 3 is disassembled and assembled, improves work efficiency, and expands the scope of application.

[0025] The through-conductor can not only be used as a connection medium, but also as a detachable conductor if a withdrawal port is reserved on the shell to meet the countermeasure requirements (PT, LA). The through-conductor can be used as a spare break for emergency repairs.

[0026] Example 2 like Figure 6-9 As shown, a pressure-resistant tooling includes the through-conductor of Example 1; the pressure-resistant tooling also includes a conductor 7; the lower end of the conductor 7 is threadedly connected to a first joint 8; the first joint 8 is connected to a connecting block 4 through a bolt; a second joint 9 is inserted into a connecting hole 101; the second joint 9 abuts against a contact finger 2; the end of the second joint 9 away from the connecting hole 101 is connected to an insulator 10; the insulator 10 is installed at the left interface of a four-way 11; the conductor is arranged in the four-way.

[0027] The pressure-resistant tooling also includes a third joint 12; one end of the third joint 12 is connected to the connection plate 5 by bolts; the end of the third joint 12 away from the connection plate 5 is installed on the plum blossom contact 13; the plum blossom contact 13 is installed at the lower end interface of the cross 11. The shielding body 14 is installed in the first shielding connection hole 402 and the second shielding connection hole 502 by bolts, and is installed at the connection between the first joint 8, the third joint 12 and the through-conductor.

[0028] Using the above-mentioned pressure-resistant tooling includes the following steps: S1. Install a T-shaped connecting plate 15 on the upper end of the conductor 7; thread the lower end of the conductor 7 to the first joint 8; then install the T-shaped connecting plate 15 on the casing 3 by bolts, and install the conductor 7 in the casing 3; S2. Install the insulator 10 at the left interface of the cross 11; then install the second joint 9 on the insulator 10 by bolts; S3, hoist the casing 3, and install the casing 3 at the upper end interface of the cross 11 through bolts; at the same time, insert the conductor 7 into the cross 11; S4, put the through-conductor into the cross, and insert the second joint 9 into the connecting hole 101 of the through-conductor; connect the first joint 8 to the connecting block 4 of the through-conductor by bolts; S5. Clean the inside of the cross 11; install the flange at the right interface of the cross 11; seal and ground the lower interface of the cross 11; then fill the cross 11 with SF6 to the rated gas pressure of 0.4Mpa and the pressure-resistant interval.

[0029] After step S5 is completed, step S6 is also included: recovering the gas and removing the right sealing plate of the cross-way 11; S7, remove the through-conductor and the second joint 9; install the plum blossom contact 13 at the lower end interface of the cross 11; install the third joint 12 on the plum blossom contact 13; the third joint 12 is connected to the connection plate 5 of the through-conductor by bolts; the connection block 4 of the through-conductor is connected to the first joint 8 by bolts; S8. Install the right side cover of the four-way 11; fill the four-way 11 with SF6 to the rated pressure of 0.4Mpa and use pressure-resistant cable.

[0030] Through the reasonable setting of the through-conductor, the single-phase withstand voltage can be completed by using the same conductor 7, avoiding repeated disassembly and assembly of the bushing 3. The operation is simple and the installation is convenient, which saves time and effort, facilitates the implementation of on-site emergency projects, increases the scope of application, and improves work efficiency.

[0031] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A through-conductor, characterized in that: The invention comprises a connecting body (1), wherein a connecting hole (101) is arranged in the middle of the connecting body (1); a plurality of contact fingers (2) are mounted on the inner wall of the connecting hole (101); a connecting block (4) is arranged at the upper end of the connecting body (1); and a connecting plate (5) is arranged at the lower end of the connecting body (1).

2. The through-hole conductor according to claim 1, characterized in that: Two guide sleeves (6) are also arranged in the connection hole (101); the two guide sleeves (6) are respectively arranged on both sides of the axial direction of the plurality of contact fingers (2).

3. The through-hole conductor according to claim 2, characterized in that: A threaded blind hole (401) is provided on the connection block (4); and a connection through hole (501) is provided on the connection plate (5).

4. The through-hole conductor according to claim 3, characterized in that: A first shielding connection hole (402) is provided in the middle of the connection block (4); and a second shielding connection hole (502) is provided in the middle of the connection plate (5).

5. A pressure-resistant tooling, characterized in that: The invention comprises a through-conductor as claimed in any one of claims 1 to 4; the pressure-resistant tooling further comprises a conductor (7); the upper end of the conductor (7) is connected to a T-shaped connecting plate (15); the lower end of the conductor (7) is threadedly connected to a first joint (8); the first joint (8) is connected to a connecting block (4) by bolts; a second joint (9) is inserted into the connecting hole (101); the second joint (9) abuts against a contact finger (2); the end of the second joint (9) away from the connecting hole (101) is connected to an insulator (10); the insulator (10) is installed at the left interface of a spool (11); the conductor (7) is inserted into the spool (11) from the upper interface of the spool (11).

6. The pressure-resistant tooling according to claim 5, characterized in that: The pressure-resistant tooling also includes a third joint (12); one end of the third joint (12) is connected to the connection plate (5) via a bolt; one end of the third joint (12) away from the connection plate (5) is mounted on a plum blossom contact (13); and the plum blossom contact (13) is mounted at the lower end interface of the cross-connect (11).

7. The pressure-resistant tooling according to claim 6, characterized in that: The pressure-resistant tooling also includes a shielding body (14).

8. A method for using a pressure-resistant tool, characterized in that: Using the pressure-resistant tooling described in any one of claims 5 to 7 above comprises the following steps: S1, a T-shaped connecting plate (15) is installed at the upper end of the conductor (7); the lower end of the conductor (7) is threadedly connected to the first joint (8); then the T-shaped connecting plate (15) is installed on the casing (3) by means of bolts, and the conductor (7) is installed in the casing (3); S2. Install an insulator (10) at the left interface of the cross-connection (11); then install the second connector (9) on the insulator (10) by means of bolts; S3, hoisting the casing (3), and installing the casing (3) at the upper end interface of the spool (11) by means of bolts; at the same time, inserting the conductor (7) into the spool (11); S4, placing the through-conductor into the cross-piece, and inserting the second joint (9) into the connecting hole (101) of the through-conductor; connecting the first joint (8) to the connecting block (4) of the through-conductor by means of bolts; S5. Clean the inside of the cross-piece (11); install the flange at the right interface of the cross-piece (11); seal and ground the lower interface of the cross-piece (11); then fill the cross-piece (11) with SF6 to the rated pressure of 0.4 MPa and the pressure-resistant interval.

9. The method for using the pressure-resistant tooling according to claim 8, characterized in that: After step S5 is completed, the following steps are also included: S6: Recover gas and remove the right sealing plate of the cross-connection (11); S7, remove the through-conductor and the second joint (9); install a plum blossom contact (13) at the lower end interface of the cross (11); install a third joint (12) on the plum blossom contact (13); the third joint (12) is connected to the connecting plate (5) of the through-conductor by bolts; the connecting block (4) of the through-conductor is connected to the first joint (8) by bolts; S8. Install the right side cover of the cross-piece (11); fill the cross-piece (11) with SF6 to a rated pressure of 0.4 MPa and a pressure-resistant cable.

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