Special common-box-to-branch-box multifunctional transition interface device for GIS voltage withstanding

Abstract

The utility model relates to a GIS withstand voltage dedicated common-box to branch-box multifunctional transition interface device, which comprises a switching bus, a branch-box transition bus and an isolating switch, the branch-box transition bus is detachably connected with the isolating switch, the switching bus comprises a transition interface shell and three special-shaped conductor assemblies fixedly connected in the transition interface shell, and the three special-shaped conductor assemblies are arranged in the transition interface shell. The two ends of the transition interface shell are connected with a sub-box transition bus and a common-box voltage-withstanding tool transition bus respectively, the end, connected with the sub-box transition bus, of the transition interface shell is fixedly connected with a switching disc type insulator, and one end of the special-shaped conductor assembly is connected with an insert of the switching disc type insulator. The special-shaped conductor assembly has a very important application prospect in the aspect of GIS equipment interval factory-leaving withstand voltage test, the types and the number of withstand voltage tool equipment are reduced, the laboratory space is saved, the production cost is saved, and the special-shaped conductor assembly has a very good application prospect in the field of GIS equipment interval factory-leaving withstand voltage test, so that the special-shaped conductor assembly has a very good application prospect in the field of GIS equipment interval factory-leaving withstand voltage test, and has a very good application prospect in the field of GIS equipment interval factory-leaving withstand voltage test. And meanwhile, the universality and the versatility of the pressure-resistant tool are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage switches, in particular to a multifunctional transition interface device for GIS special pressure-resistant common box to sub-box conversion. Background Art

[0002] 126kV GIS combined electrical equipment is divided into two structural forms: three-phase common box and three-phase split box. At present, the market demand is mainly for common box with only a small number of split box equipment. When the equipment is subjected to factory pressure test in the factory, it is necessary to install the pressure tooling before the test. The conventional practice is to install the common box pressure tooling for common box equipment for pressure test, and to install the split box pressure tooling for split box equipment for pressure test. Not only the types and quantity of pressure tooling increase, but also the production cost increases and the laboratory space is occupied. In order to reduce the types of factory pressure tooling, save laboratory space, and reduce production costs, it is necessary to develop a set of GIS pressure tooling special common box to split box multifunctional transition interface device. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a GIS pressure-resistant special common box to sub-box multifunctional transition interface device which has a reasonable structure, is easy to install, safe and reliable, and connects the existing common box pressure-resistant tooling with the sub-box GIS transition busbar through a transfer busbar, so as to achieve the purpose of carrying out pressure (partial discharge) tests on the busbars, incomplete expansion intervals and complete intervals of the sub-box GIS through the common box GIS pressure-resistant tooling.

[0004] The utility model is realized through the following technical scheme, and provides a GIS withstand voltage special common box to sub-box multifunctional transition interface device, including a transfer bus, a sub-box transition bus and a disconnector, the sub-box transition bus and the disconnector are detachably connected, the transfer bus includes a transition interface shell and three special-shaped conductor assemblies fixedly connected in the transition interface shell, the two ends of the transition interface shell are respectively detachably connected with the sub-box transition bus and the common box withstand voltage tooling transition bus, one end of the transition interface shell connected with the sub-box transition bus is fixedly connected with a transfer disc insulator, one end of the special-shaped conductor assembly is connected with an insert of the transfer disc insulator, and the other end of the special-shaped conductor assembly is connected with an insert of the common box disc insulator on the common box withstand voltage tooling transition bus.

[0005] In this scheme, according to the different forms of withstand voltage intervals, the transfer busbar is selected to connect different tooling, so as to carry out withstand voltage (partial discharge) tests on different types of sub-box GIS equipment. The transition busbar of the common box withstand voltage tooling is connected through special-shaped conductor components. The other end can be directly connected to the sub-box equipment, or it can be connected to the sub-box equipment through a detachable sub-box transition busbar, or connected to the sub-box equipment through an isolating switch.

[0006] As an optimization, the transition interface shell is connected to the common box pressure-resistant tooling transition busbar flange, and the flange connection bolts are evenly distributed circumferentially. This allows the transition interface shell to be installed at different angles during installation, and by rotating the transition interface shell, it can be docked with box-split equipment of various models and sizes.

[0007] As an optimization, the special-shaped conductor assembly includes a sub-box busbar conductor fixed to the insert of the transfer disc insulator, a transfer special-shaped conductor fixed to the sub-box busbar conductor, and a transition interface contact fixed to the transfer special-shaped conductor. It also includes a straight conductor inserted into the transition interface contact and a common box conductor fixed to the straight conductor. The common box conductor is detachably fixed to the insert of the common box disc insulator. When installing the transfer bus in this solution, the common box conductor and the straight conductor are installed on the common box disc insulator of the common box voltage-resistant tooling transition busbar, and then the transition interface shell is flange-connected. The sub-box busbar conductor, the transfer special-shaped conductor and the transition interface contact are fixed to the transfer disc insulator in the transition interface shell. When installing the transition interface shell, the straight conductor is inserted into the transition interface contact.

[0008] As an optimization, the sub-box busbar conductor, transfer special-shaped conductor, transition interface contact seat, straight conductor and common box conductor are arranged in sequence along the length direction of the transition interface shell, thereby forming a special-shaped conductor assembly to achieve connection at both ends, and at the same time, the arrangement and position relationship between the three-phase conductors at both ends can be adjusted.

[0009] As an optimization, the direction in which the straight conductor is inserted into the transition interface contact seat is parallel to the length direction of the transition interface housing. In this solution, the direction in which the straight conductor is inserted into the transition interface contact seat is parallel to the length direction of the transition interface housing, so that the straight conductor can be inserted into the transition interface contact seat when the transition interface housing is installed.

[0010] As an optimization, the three inserts of the common box disc insulator are arranged in a regular triangle, and the three inserts of the transfer disc insulator are arranged in an inverted triangle, so as to realize phase switching at both ends.

[0011] The beneficial effects of the utility model are as follows: the utility model is a GIS pressure-resistant special common box to separate box multifunctional transition interface device, which has very important application prospects in the factory pressure test of GIS equipment intervals, reduces the types and quantity of pressure-resistant tooling equipment, saves laboratory space, saves production costs, and at the same time realizes the versatility and versatility of pressure-resistant tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0013] Figure 2 This is the internal schematic diagram of the transfer busbar of the utility model;

[0014] Figure 3It is a side view of the utility model in use;

[0015] Figure 4 It is a top view of the utility model in use;

[0016] As shown in the figure:

[0017] 1. Transfer busbar, 2. Sub-box transition busbar, 3. Disconnector, 4. Common box pressure-resistant tooling transition busbar, 11. Common box disc insulator, 12. Common box conductor, 13. Straight conductor, 14. Transition interface contact seat, 15. Transition interface shell, 16. Transfer special-shaped conductor assembly, 17. Sub-box busbar conductor, 18. Transfer disc insulator. DETAILED DESCRIPTION

[0018] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0019] like Figures 1 to 4 As shown, the utility model is a GIS pressure-resistant special common box to sub-box multifunctional transition interface device, including a transfer bus 1, a sub-box transition bus 2 and a disconnector 3. The sub-box transition bus 2 and the disconnector 3 are detachably connected, and the sub-box transition bus 2 and the disconnector 3 are devices of the prior art.

[0020] The transfer busbar 1 is installed on the common box pressure-resistant tooling transition busbar 4 of the common box pressure-resistant tooling. The common box pressure-resistant tooling transition busbar 4 is installed with a common box disc insulator 11, and the three inserts on the common box disc insulator 11 realize three-phase connection.

[0021] The transfer bus 1 includes a transition interface housing 15 and three special-shaped conductor components fixed in the transition interface housing 15. The transition interface housing 15 is a horizontally arranged tubular structure, and in this embodiment, is a circular tube.

[0022] The two ends of the transition interface housing 15 are detachably connected to the sub-box transition busbar 2 and the common box pressure-resistant tooling transition busbar 4. In this embodiment, the transition interface housing 15 is flange-connected to the common box pressure-resistant tooling transition busbar 4, and the flange connection bolts are evenly distributed around the circumference. The transition interface housing 15 is flange-connected to the sub-box transition busbar 2, and the flange connection bolts are evenly distributed around the circumference.

[0023] The end of the transition interface housing 15 connected to the sub-box transition bus 2 is fixedly connected with a transfer disc insulator 18. The three inserts on the transfer disc insulator 18 can be directly connected to the sub-box equipment, or the three inserts can be connected to the sub-box transition bus 2.

[0024] The three inserts of the common box disc insulator 11 are arranged in an equilateral triangle, and the three inserts of the transfer disc insulator 18 are arranged in an inverted triangle. One end of the special-shaped conductor assembly is connected to the insert of the transfer disc insulator 18. The other end of the special-shaped conductor assembly is connected to the insert of the common box disc insulator 11 on the common box withstand voltage tooling transition bus 4, thereby realizing the connection between the common box withstand voltage tooling transition bus 4 and the sub-box transition bus 2.

[0025] like Figure 2 As shown, the special-shaped conductor assembly includes a sub-box bus conductor 17 fixedly connected to the insert of the transfer disc insulator 18, a transfer special-shaped conductor 16 fixedly connected to the sub-box bus conductor 17, and a transition interface contact seat 14 fixedly connected to the transfer special-shaped conductor 16, and also includes a straight conductor 13 inserted into the transition interface contact seat 14 and a common box conductor 12 fixedly connected to the straight conductor 13, and the common box conductor 12 is detachably fixedly connected to the insert of the common box disc insulator 11. The direction in which the straight conductor 13 is inserted into the transition interface contact seat 14 is parallel to the length direction of the transition interface housing 15.

[0026] The sub-box bus conductor 17 , the transfer special-shaped conductor 16 , the transition interface contact seat 14 , the straight conductor 13 and the common box conductor 12 are arranged in sequence along the length direction of the transition interface housing 15 .

[0027] The use of the utility model:

[0028] When installing the transfer bus 1, the common box conductor 12 and the straight conductor 13 are installed on the common box disc insulator 11 of the common box voltage-resistant tooling transition bus 4, and then the flange is connected to the transition interface shell 15. The branch bus conductor 17, the transfer special-shaped conductor 16 and the transition interface contact seat 14 are fixed on the transfer disc insulator 18 in the transition interface shell 15. When installing the transition interface shell 15, the straight conductor 13 is inserted into the transition interface contact seat 14.

[0029] According to the different forms of the voltage-resistant intervals, select the transfer busbar 1 to connect with different tooling: when the voltage-resistant interval is a complete interval with a main busbar, the transfer busbar 1 can be directly connected to the main busbar of the pre-voltage-resistant interval.

[0030] When the sub-box transition busbar 2 needs to be used for pressure resistance, the transfer busbar is connected to the pre-pressure-resistant sub-box transition busbar 2.

[0031] When the voltage-withstand interval is an incomplete interval without main busbar and busbar isolation, the transfer busbar needs to be connected to the sub-box transition busbar 2 and the disconnector 3 before being connected to the incomplete interval of pre-voltage-withstand.

[0032] After the docking is completed, the pressure withstand (partial discharge) test can be carried out on different types of sub-box GIS equipment through the common box pressure withstand tooling. At the same time, the single-phase pressure withstand (partial discharge) requirement of the sub-box GIS can be met through the manual single-phase operation isolating switch.

[0033] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A GIS pressure-resistant special common box to separate box multifunctional transition interface device, characterized by: The utility model comprises a transfer busbar (1), a sub-box transition busbar (2) and a disconnector (3), wherein the sub-box transition busbar (2) and the disconnector (3) are detachably connected, the transfer busbar (1) comprises a transition interface housing (15) and three special-shaped conductor assemblies fixedly connected in the transition interface housing (15), two ends of the transition interface housing (15) are respectively detachably connected to the sub-box transition busbar (2) and the common box withstand voltage tooling transition busbar (4), one end of the transition interface housing (15) connected to the sub-box transition busbar (2) is fixedly connected to a transfer disc insulator (18), one end of the special-shaped conductor assembly is connected to an insert of the transfer disc insulator (18), and the other end of the special-shaped conductor assembly is connected to an insert of the common box disc insulator (11) on the common box withstand voltage tooling transition busbar (4).

2. According to claim 1, a GIS pressure-resistant special common box to separate box multifunctional transition interface device is characterized by: The transition interface housing (15) is flange-connected to the common box pressure-resistant tooling transition busbar (4), and the flange connection bolts are evenly distributed in the circumference.

3. The GIS pressure-resistant special common box to separate box multifunctional transition interface device according to claim 1 is characterized by: The special-shaped conductor assembly comprises a sub-box bus conductor (17) fixedly connected to an insert of a transfer disc insulator (18), a transfer special-shaped conductor (16) fixedly connected to the sub-box bus conductor (17), and a transition interface contact seat (14) fixedly connected to the transfer special-shaped conductor (16), and also comprises a straight conductor (13) inserted into the transition interface contact seat (14) and a common box conductor (12) fixedly connected to the straight conductor (13), wherein the common box conductor (12) is detachably fixedly connected to the insert of the common box disc insulator (11).

4. A GIS pressure-resistant special common box to separate box multifunctional transition interface device according to claim 3, characterized in that: The sub-box busbar conductor (17), the transfer special-shaped conductor (16), the transition interface contact seat (14), the straight conductor (13) and the common box conductor (12) are arranged in sequence along the length direction of the transition interface housing (15).

5. The GIS pressure-resistant special common box to separate box multifunctional transition interface device according to claim 3 is characterized by: The direction in which the straight conductor (13) is inserted into the transition interface contact seat (14) is parallel to the length direction of the transition interface housing (15).

6. The GIS pressure-resistant special common box to separate box multifunctional transition interface device according to claim 1 is characterized by: The three inserts of the common-box disc insulator (11) are arranged in the form of a regular triangle, and the three inserts of the transfer disc insulator (18) are arranged in the form of an inverted triangle.

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