GIS product insulation basin voltage withstanding equipment

Abstract

The utility model relates to a GIS product insulation basin withstand voltage device, comprising a voltage source, a three-way assembly body and two main switches, one interface of the three-way assembly body is connected with the voltage source, the other two interfaces of the three-way assembly body are respectively connected with the input ends of the two main switches through buses, the output ends of the main switches are connected with an assembly switch, and the assembly switch is connected with the three-way assembly body. A fixing tool is installed on the assembly switch, an insulation basin to be tested is detachably installed in the fixing tool, and the insulation basin to be tested is connected with the output end of the assembly switch. According to the utility model, the three-way assembly body is extended to two sides to form two output loops, one output loop is used for carrying out voltage withstanding detection, and the other output loop is used for carrying out test preparation work, so that the time wasted by the preparation work is greatly reduced, and the test efficiency is improved; a plurality of to-be-tested insulation basins are installed on the fixing tool, and each output loop can be connected in series with a plurality of assembly switches for testing, so that the testing efficiency is further improved, and the utilization rate of testing equipment is improved at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of insulating basin pressure resistance, in particular to insulating basin pressure resistance equipment for GIS products. Background Art

[0002] GIS equipment includes functional units such as circuit breakers, disconnectors, grounding switches, current transformers, voltage transformers, lightning arresters, bushings, etc. Different functional units are usually connected through insulating basins. Insulating basins are used in large quantities, and each insulating basin needs to undergo factory tests such as power frequency withstand voltage test and partial discharge test. Only after all tests are passed can they be used in GIS equipment assembly. At present, the withstand voltage test of basin-type insulators can only be performed on a single one, and the assembly is complicated and the efficiency is extremely low. Due to the huge number of insulating basins used, multiple sets of withstand voltage tooling equipment need to be prepared to carry out power frequency withstand voltage tests in batches. Limited by the number of withstand voltage equipment and the long test preparation time, the utilization rate of withstand voltage equipment and the test efficiency are low. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a GIS insulating basin withstand voltage test equipment, which can simultaneously carry out withstand voltage tests on multiple groups of insulating basins and perform pre-test preparation work on multiple other groups of insulating basins, thereby improving the utilization rate of the withstand voltage equipment and the test efficiency. In addition, it can be quickly expanded according to demand and is easy to use.

[0004] The utility model is realized through the following technical scheme: an insulating basin withstand voltage device for GIS products, comprising a voltage source, a three-way assembly and two main switches, wherein one interface of the three-way assembly is connected to the voltage source, the other two interfaces of the three-way assembly are respectively connected to two main switch input ends through a busbar, the main switch output end is connected to the assembly switch, the assembly switch input end is connected to the main switch output end, a fixed tool is installed on the assembly switch, an insulating basin to be tested is detachably installed in the fixed tool, and the insulating basin to be tested is connected to the output end of the assembly switch.

[0005] In this scheme, the voltage source extends two output circuits on both sides through a three-way assembly, and the closing or opening of the output circuit is controlled by a main switch. Both main switches are provided with assembly switches and fixed tooling for withstand voltage test, so that one output circuit can be subjected to withstand voltage test while the other output circuit is undergoing test preparation, which greatly reduces the time wasted on preparation work, or the two output circuits can undergo withstand voltage test at the same time, which is easy to use and improves test efficiency.

[0006] As an optimization, the assembly switch includes a connecting shell, and the left and right opposite openings of the connecting shell are respectively installed with a packaging cover plate and a first pot-type insulator, and the upper and lower opposite openings of the connecting shell are respectively installed with an operating mechanism and a second pot-type insulator, and the first pot-type insulator in the connecting shell is connected to a moving contact seat, and the second pot-type insulator is connected to a static contact seat, and the moving contact seat is connected to the operating mechanism through an operating rod, and the output end of the main switch is connected to the first pot-type insulator, and the insulating pot to be tested is connected to the second pot-type insulator. The assembly switch of this optimization scheme is connected through the first pot-type insulator wiring input, and the moving contact of the moving contact seat and the static contact of the static contact seat are driven to open and close by the operating rod, and the withstand voltage test of the insulating pot to be tested in the fixed tooling is independently controlled. It has a simple structure and is easy to operate. By setting an opening reserved at the packaging cover plate, it can also be connected in series with other assembly switches for expansion.

[0007] As an optimization, a plurality of the assembly switches are connected in series on the main switch, and the plurality of assembly switches are arranged in the left-right direction, and the left and right openings of adjacent assembly switches are butt-jointed and fixed, and the movable contact seat of the assembly switch is connected with a conductive rod, and the conductive rod extends in a direction away from the first pot-type insulator and connects the first pot-type insulator of the adjacent assembly switch, and the outermost assembly switch is installed with a packaging cover. The opening at the packaging cover on the left side of the assembly switch of this optimization solution can be butt-jointed and fixed with the opening on the right side of the adjacent assembly switch, and two adjacent assembly switches are connected in series and energized through the conductive rod, and multiple assembly switches are connected in series on an output circuit to install and fix the fixture for testing, which further improves the test efficiency and the utilization rate of the test equipment.

[0008] As an optimization, a connection cover for connecting the conductive rod is provided on the outer side of the first pot-type insulator, the outer side of the connection cover is in an arc transition shape, and a through hole for the conductive rod to pass through is provided on the connection cover. In this optimization solution, the conductive rod is inserted into the connection cover, which facilitates the installation and connection of the conductive rod.

[0009] As an optimization, the fixed tooling includes a tooling straight barrel fixedly connected to the second pot-type insulator, and multiple insulating pots to be tested are detachably installed in the tooling straight barrel. The multiple insulating pots to be tested are arranged and distributed along the length direction of the tooling straight barrel. Adjacent insulating pots to be tested are connected by conductive springs. The innermost insulating pot to be tested is connected to the second pot-type insulator through a conductive column, and an inflation valve seat is provided on the tooling straight barrel. In this optimization scheme, multiple insulating pots to be tested can be installed on the fixed tooling at one time. Adjacent insulating pots to be tested are connected in series by conductive springs. The innermost insulating pot to be tested is connected to the second pot-type insulator. One fixed tooling can detect multiple insulating pots to be tested at one time, which greatly improves the test efficiency of the insulating pots to be tested.

[0010] As an optimization, the tooling straight cylinder is a split structure, and the tooling straight cylinder is composed of a number of transition cylinders arranged at intervals in the upper and lower parts. The transition cylinder includes a cylinder body and a fixed ring fixedly connected to the upper and lower ends of the outer wall of the cylinder. The size of the fixed ring is adapted to the edge of the insulating basin to be tested. The insulating basin to be tested is located between two adjacent transition cylinders in the upper and lower parts, and its edge is connected to the fixed ring by bolts. The upper end of the outermost transition cylinder is equipped with a packaging cover plate, and the inflation valve seat is installed on the cylinder body. This optimization scheme uses a number of transition cylinders to space the insulating basin to be tested, and the insulating basin to be tested is detachably connected to the fixed ring by bolts, which is easy to install.

[0011] As an optimization, both ends of the conductive spring and the conductive column are provided with short shielding covers, which are flat upper and lower ends and curved side covers, and through holes are provided on the upper and lower end surfaces of the short shielding covers. This optimization scheme uses the short shielding covers to even out the electric field around the conductive spring and the conductive column.

[0012] As an optimization, an end shielding cover is installed outside the outermost insulating basin to be tested in the fixed tooling, and the end shielding cover is a spherical cover with through holes at both ends. The end shielding cover of this optimization solution evens out the electric field around the end of the insulating basin to be tested.

[0013] As an optimization, a four-way assembly is provided between the three-way assembly and the voltage source, and the four-way assembly is provided with a first interface connected to the three-way assembly and a second interface connected to the voltage source, and the horizontal height of the first interface is lower than the horizontal height of the second interface. This optimization scheme reduces the height of the test equipment through the height difference between the first interface and the second interface of the four-way assembly, which is convenient for personnel to install.

[0014] As an optimization, the voltage source is a capacitive voltage transformer, the main switch is an isolating grounding switch, and five assembly switches are connected in series at the output end of the main switch. This optimization scheme adjusts the voltage through a capacitive voltage transformer to provide a voltage source, and the output circuit is closed when the isolating switch of the isolating grounding switch is closed and the grounding switch is opened, and the output circuit is disconnected when the isolating switch of the isolating grounding switch is opened and the grounding switch is closed, which is safer to use. The withstand voltage test time of the five assembly switches connected in series is close to the test preparation time of the five assembly switches, which further saves the test time.

[0015] The beneficial effects of the utility model are as follows: the voltage source extends two output circuits to both sides through the three-way assembly, the closing or disconnection of the output circuit is controlled by the main switch, and the two main switches are both provided with assembly switches and fixed tooling for withstand voltage test, so that one output circuit can be subjected to withstand voltage test while the other output circuit is subjected to test preparation, which greatly reduces the time wasted on preparation work, or the two output circuits are subjected to withstand voltage test at the same time, thereby improving the test efficiency; multiple insulating pots to be tested can be installed on the fixed tooling at one time, and adjacent insulating pots to be tested are connected in series for conduction through conductive springs, which greatly improves the test detection efficiency of the insulating pots to be tested, and multiple assembly switches can be connected in series on each output circuit to install fixed tooling for testing, thereby further improving the test efficiency and improving the utilization rate of the test equipment at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the top view structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of multiple assembly switches connected in series;

[0018] Figure 3 It is a side view of the schematic diagram of the fixed tooling structure;

[0019] Figure 4 It is a schematic diagram of the structure of a four-way assembly;

[0020] Figure 5 It is a schematic diagram of the assembly switch structure;

[0021] As shown in the figure:

[0022] 1. Voltage source, 2. Three-way assembly, 3. Main switch, 4. Assembly switch, 41. Connection shell, 42. First pot-type insulator, 421. Connection cover, 43. Second pot-type insulator, 44. Operating mechanism, 441. Mounting seat, 442. Crank handle, 45. Static contact seat, 46. Moving contact seat, 47. Inflatable valve seat, 48. Operating rod, 49. Conductive rod, 5. Fixing tooling, 51. Transition cylinder, 511. Cylinder, 512. Fixed ring, 52. Conductive spring, 53. Conductive column, 54. Short shielding cover, 55. End shielding cover, 6. Packaging cover, 7. Busbar, 8. Four-way assembly, 81. Four-way bushing, 82. First interface, 83. Second interface, 84. Conductor, 85. Sealing cover, 9. Insulation basin to be tested. DETAILED DESCRIPTION

[0023] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0024] like Figures 1 to 5As shown, a GIS product insulating basin withstand voltage equipment includes a voltage source 1, a three-way assembly 2 and two main switches 3. Specifically, the voltage source 1 described in this embodiment is a capacitive voltage transformer, which is used to adjust the voltage. One end of the capacitive voltage transformer is connected to the power supply and the other end outputs the adjusted voltage source; the main switch 3 is an isolating grounding switch. The isolating grounding switch in this embodiment is provided with an observation window and an inflation valve seat. The internal contact state is observed through the observation window. The isolating switch of the isolating grounding switch is closed and the grounding switch is opened to form a passage, and the isolating switch is opened and the grounding switch is closed to form a circuit break; the three-way assembly 2 includes a three-way bushing, and the three interfaces of the three-way bushing are all fixed with insulators for connection with other equipment ports. One insulator is provided with a wiring terminal as an input end, and the other two insulators are provided with outlet terminals as output ends. The three-way bushing is provided with a conductor to connect the insulators of the three interfaces. The above-mentioned capacitive voltage transformer, isolating grounding switch and three-way assembly are all existing conventional technologies, and no further elaboration is given here.

[0025] like Figure 1 As shown, one interface of the three-way assembly 2 is connected to the voltage source 1, and the other two interfaces of the three-way assembly 2 are respectively connected to the two main switch 3 input ends through the busbar 7, the main switch 3 output end is connected to the assembly switch 4, the assembly switch 4 input end is connected to the main switch 3 output end, a fixed tool 5 is installed on the assembly switch 4, and an insulating basin 9 to be tested is detachably installed in the fixed tool 5, and the insulating basin 9 to be tested is connected to the output end of the assembly switch 4.

[0026] A four-way assembly 8 is provided between the three-way assembly 2 and the voltage source 1. The four-way assembly 8 is provided with a first interface 82 connected to the three-way assembly 2 and a second interface 83 connected to the voltage source 1. The horizontal height of the first interface 82 is lower than the horizontal height of the second interface 83. The capacitive voltage transformer, the isolating grounding switch, the three-way assembly and the fixing tool in this embodiment are all horizontally arranged and fixed on the support. Figure 4 As shown, to facilitate installation work, the four-way assembly 8 includes a vertically arranged four-way sleeve 81, the upper and lower ports of the four-way sleeve 81 are fixedly connected with a sealing cover plate 85, the left and right side walls of the four-way sleeve 81 are respectively provided with a first interface 82 and a second interface 83, the first interface and the second interface are both installed with insulators for connecting to other equipment ports, a conductor 84 is provided in the four-way sleeve 81 to connect the insulators of the first interface and the second interface in series, and the four-way assembly is an existing conventional technology.

[0027] like Figure 5As shown, specifically, the assembled switch 4 includes a connecting shell 41, on which a charging valve seat 47 filled with SF6 protective gas is provided, the left and right sides and the upper and lower ends of the connecting shell 41 are relatively open, and the opening on the left side of the connecting shell 41 is fixed with a packaging cover plate 6 by bolts to prevent leakage, and the opening on the right side of the connecting shell 41 is fixed with a first pot-type insulator 42, and the first pot-type insulator 42 is connected with a moving contact seat 46, and the upper end opening of the connecting shell 41 is fixed with a second pot-type insulator 43, and the second pot-type insulator 43 is connected with a static contact seat 45, and the static contact seat 45 and the moving contact seat 46 are located inside the connecting shell 41, and the static contact of the static contact seat 45 and the moving contact of the moving contact seat 46 are relatively arranged up and down, and an operating mechanism 44 is installed at the opening at the lower end of the connecting shell 41, and the moving contact seat 46 is connected to the operating mechanism 44 through an operating rod 48. The operating structure 44 includes a mounting base 441 fixedly connected to the opening at the lower end of the connecting shell 41, and a crank 442 is rotatably mounted on the mounting base 441. One end of an operating rod 48 is connected to the moving contact in the moving contact base 46, and the other end of the operating rod 48 is connected to the crank 442. The moving contact is driven to move through the operating rod 48 by rotating the crank 442, thereby realizing the closing or disconnection of the moving contact and the static contact, thereby controlling the opening and closing of the assembled switch.

[0028] like Figure 2 As shown, the main switch 3 is connected in series with a plurality of the assembly switches 4. In this embodiment, the output end of the main switch 3 is connected in series with five assembly switches 4. Figure 2 As shown, five assembly switches 4 are arranged in the left-right direction, the output end of the main switch 3 is connected to the first pot-type insulator 42 of the rightmost assembly switch 4, and the port of the main switch 3 is fixed to the edge of the first pot-type insulator 42 by bolts. The left and right openings of adjacent assembly switches 4 are butt-jointed and fixed, specifically, the right opening of the assembly switch on the right side is fixed to the edge of the first pot-type insulator of the assembly switch on the left side by bolts, a conductive rod 49 is connected to one side of the movable contact seat 46 in the assembly switch 4, the conductive rod 49 extends in a direction away from its first pot-type insulator and connects the first pot-type insulator 42 of the adjacent assembly switch, a connection cover 421 connected to the conductive rod 49 is provided on the outside of the first pot-type insulator 42, the outside of the connection cover 421 is in an arc transition shape, and a through hole is provided on the connection cover 421 for the conductive rod 49 to pass through, and a packaging cover 6 is installed on the left opening of the assembly switch 4 on the outermost side. The input ends of multiple assembly switches are connected in series by the conductive rod, so that each assembly switch can be controlled to perform a withstand voltage test at the same time.

[0029] like Figure 3 As shown, the fixing tool 5 comprises a tool straight cylinder fixedly connected to the second pot-type insulator 43, in which a plurality of insulating pots 9 to be tested are detachably installed, and the plurality of insulating pots 9 to be tested are arranged and distributed along the length direction of the tool straight cylinder.

[0030] Specifically, the tooling straight cylinder is a split structure, and the tooling straight cylinder is composed of a plurality of transition cylinders 51 arranged at intervals in the upper and lower directions. The transition cylinder 51 includes a cylinder body 511 and a fixed ring 512 fixedly connected to the upper and lower ends of the outer wall of the cylinder. The size of the fixed ring 512 is adapted to the edge of the insulating basin 9 to be tested. The insulating basin 9 to be tested is located between two adjacent transition cylinders 51 in the upper and lower directions. The edge of the insulating basin 9 to be tested is connected to the fixed ring 512 by bolts. The upper end of the outermost transition cylinder 51 is provided with a packaging cover plate 6 for sealing. The fixed ring 512 of the lowermost transition cylinder 51 and the edge of the second basin insulator 43 are fixed by bolts. An inflation valve seat 47 is installed on the cylinder body 511 of each transition cylinder 51, and SF6 protective gas is filled into the interior through the inflation valve seat.

[0031] An end shielding cover 55 is installed outside the outermost insulating pot 9 to be tested in the fixed fixture 5. The end shielding cover 55 is a spherical cover with through holes at both ends. Adjacent insulating pots 9 to be tested are connected by conductive springs 52. The innermost insulating pot 9 to be tested is connected to the second pot-type insulator 43 through a conductive column 53. Short shielding covers 54 are provided at both ends of the conductive spring 52 and both ends of the conductive column 53. The short shielding cover 54 is a cover with flat upper and lower ends and curved sides. Through holes are provided on the upper and lower end surfaces of the short shielding cover. The end shielding cover and the short shielding cover can evenly distribute the electric field to prevent SF6 gas breakdown due to uneven electric field.

[0032] Working principle: The capacitive voltage transformer is connected to the power supply and adjusts the voltage. The output end of the capacitive voltage transformer is connected to the four-way assembly 8. The four-way assembly 8 lowers the height of the equipment to facilitate workers to install the insulating basin 9 to be tested. The four-way assembly 8 is connected to the three-way assembly 2. Two output circuits are extended to both sides through the three-way assembly 2. One of the output circuits is subjected to a withstand voltage test, and the other output circuit is subjected to test preparation work.

[0033] When this method is used, the main switch 3 on the output circuit for the withstand voltage test is closed, that is, the isolating switch of the isolating grounding switch is closed, the grounding switch is opened, and the moving contact and the static contact of the assembly switch 4 are closed to close the assembly switch, and high voltage can be applied to the insulating basin 9 to be tested in the fixed tooling 5 for withstand voltage test; at the same time, the main switch 3 on the output circuit for the test preparation is disconnected, that is, the isolating switch of the isolating grounding switch is opened, the grounding switch is closed, and the moving contact and the static contact of the assembly switch 4 are opened to disconnect the assembly switch, and then the installation of the insulating basin 9 to be tested and the filling of SF6 protective gas into the main switch 3, the assembly switch 4 and the fixed tooling 5 can be carried out. After the preparation work is completed, the withstand voltage test can be carried out;

[0034] Alternatively, the two output circuits can be prepared at the same time, and after the preparation is completed, the two output circuits can be subjected to withstand voltage tests at the same time.

[0035] 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 product insulation basin withstand voltage device, comprising a voltage source (1), a three-way assembly (2) and two main switches (3), characterized in that: One interface of the three-way assembly (2) is connected to a voltage source (1), and the other two interfaces of the three-way assembly (2) are respectively connected to the input ends of two main switches (3) through busbars (7); the output ends of the main switches (3) are connected to an assembly switch (4); the input end of the assembly switch is connected to the output end of the main switch; a fixed fixture (5) is installed on the assembly switch (4); an insulating pot (9) to be tested is detachably installed in the fixed fixture (5); and the insulating pot to be tested is connected to the output end of the assembly switch.

2. The GIS product insulation basin pressure-resistant equipment according to claim 1, characterized in that: The assembly switch (4) comprises a connection housing (41), the left and right openings of the connection housing (41) being respectively provided with a packaging cover plate (6) and a first pot-type insulator (42), the upper and lower openings of the connection housing (41) being respectively provided with an operating mechanism (44) and a second pot-type insulator (43), the first pot-type insulator (42) in the connection housing being connected with a moving contact seat (46), the second pot-type insulator (43) being connected with a stationary contact seat (45), the moving contact seat (46) being connected to the operating mechanism (44) via an operating rod (48), the output end of the main switch (3) being connected to the first pot-type insulator (42), and the insulating pot to be tested (9) being connected to the second pot-type insulator (43).

3. The GIS product insulation basin pressure-resistant equipment according to claim 2, characterized in that: The main switch (3) is connected in series with a plurality of the assembly switches (4), the plurality of assembly switches being arranged in a left-right direction, the left and right openings of adjacent assembly switches being butt-jointed and fixed, the movable contact seat (46) of the assembly switch being connected with a conductive rod (49), the conductive rod (49) extending in a direction away from its first pot-type insulator and connected with the first pot-type insulator of the adjacent assembly switch, and the outermost assembly switch being installed with a packaging cover plate (6).

4. The GIS product insulation basin pressure-resistant equipment according to claim 3 is characterized by: A connection cover (421) connected to a conductive rod (49) is provided on the outside of the first pot-type insulator (42); the outside of the connection cover is in an arc transition shape; and a through hole is provided on the connection cover for the conductive rod to pass through.

5. The GIS product insulation basin pressure-resistant equipment according to claim 2, characterized in that: The fixed tool (5) comprises a tool straight cylinder fixedly connected to the second pot-type insulator (43), wherein a plurality of insulating pots to be tested (9) are detachably mounted in the tool straight cylinder, the plurality of insulating pots to be tested are arranged and distributed along the length direction of the tool straight cylinder, adjacent insulating pots to be tested (9) are connected via conductive springs (52), the innermost insulating pot to be tested (9) is connected to the second pot-type insulator (43) via a conductive column (53), and an inflation valve seat (47) is provided on the tool straight cylinder.

6. The GIS product insulation basin pressure-resistant equipment according to claim 5, characterized in that: The tooling straight cylinder is a split structure, and is composed of a plurality of transition cylinders (51) arranged at intervals in the upper and lower directions. The transition cylinder (51) comprises a cylinder body (511) and a fixed ring (512) fixedly connected to the upper and lower ends of the cylinder outer wall. The size of the fixed ring (512) is adapted to the edge of the insulating basin (9) to be tested. The insulating basin (9) to be tested is located between two adjacent transition cylinders (51) in the upper and lower directions. The edge of the insulating basin to be tested is connected to the fixed ring (512) by bolts. A packaging cover plate (6) is installed on the upper end of the outermost transition cylinder (51), and the inflation valve seat (47) is installed on the cylinder body (511).

7. The GIS product insulation basin pressure-resistant equipment according to claim 5, characterized in that: Both ends of the conductive spring (52) and the conductive column (53) are provided with short shielding covers (54), the short shielding covers being a cover body with flat upper and lower ends and curved sides, and through holes are provided on the upper and lower end surfaces of the short shielding covers.

8. The GIS product insulation basin pressure-resistant equipment according to claim 5, characterized in that: An end shielding cover (55) is installed outside the outermost insulating basin (9) to be tested in the fixed tooling, and the end shielding cover is a spherical cover body with through holes at both ends.

9. The GIS product insulation basin pressure-resistant equipment according to claim 1, characterized in that: A four-way assembly (8) is provided between the three-way assembly (2) and the voltage source (1), the four-way assembly being provided with a first interface (82) connected to the three-way assembly and a second interface (83) connected to the voltage source, the horizontal height of the first interface (82) being lower than the horizontal height of the second interface (83).

10. The GIS product insulation basin pressure-resistant equipment according to claim 1, characterized in that: The voltage source (1) is a capacitive voltage transformer, the main switch (3) is an isolating grounding switch, and five assembly switches (4) are connected in series to the output end of the main switch.

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