Combined resonant reactor

Abstract

The utility model discloses a combined resonance reactor which comprises a combined seat, a resonance reactor and a capacitive voltage divider are arranged on the upper surface and the lower surface of the combined seat, two grading rings are arranged at the upper end of the resonance reactor and the upper end of the capacitive voltage divider, a support is arranged between the two grading rings, and the support comprises two fastening plates. The surface of each fastening plate is provided with two fastening grooves, the fastening plates are connected with the grading rings through the fastening grooves, the surfaces of the fastening plates are fixedly connected with rotation stopping rings, bolts penetrating through the fastening plates are inserted into the rotation stopping rings, nuts are in threaded connection with the surfaces of the bolts, and the two grading rings are clamped through the two fastening plates. The head of the bolt is clamped by the rotation stopping ring, when the nut is screwed on the bolt, the nut is screwed by using one wrench, the rotation of the bolt is not required to be limited manually, the grading ring is assembled more quickly, and the GIS withstand voltage test of various voltages can be met through independent use and combined use of two groups of resonance reactors and capacitive voltage dividers.

Description

Technical Field

[0001] The utility model relates to the technical field of resonant reactors, in particular to a combined resonant reactor. Background Art

[0002] At present, high-voltage power equipment needs to undergo a handover test after installation and commissioning, and before it is officially energized and put into operation. Among them, the AC withstand voltage test is the most critical test item.

[0003] At present, when conducting withstand voltage tests on high-voltage equipment such as GIS switches, it is necessary to prepare a crane to hoist the reactor. When two resonant reactors are connected in series, they need to be assembled with the help of a bracket and fastened with bolts and nuts. During the installation process, the staff needs to use two wrenches to cover the bolts and nuts to ensure that the bolts and nuts do not slip when twisting, which results in inconvenient installation. Utility Model Content

[0004] The purpose of the utility model is to provide a combined resonant reactor to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined resonant reactor, comprising a combined seat, the upper and lower surfaces of which are both equipped with a resonant reactor and a capacitive voltage divider, the upper ends of which are equipped with two grading rings, and a bracket is installed between the two grading rings;

[0006] The bracket includes two fastening plates, and the fastening plates have two fastening grooves on their surfaces, the fastening plates are connected to the pressure equalizing rings through the fastening grooves, a stop ring is fixedly connected to the surface of the fastening plates, a bolt penetrating the fastening plates is inserted into the stop ring, and a nut is threaded on the surface of the bolt;

[0007] The anti-rotation ring on the fastening plate is used to clamp the head of the bolt to ensure that the bolt does not rotate. When the nut is screwed onto the bolt, the bolt does not rotate synchronously, and the nut can be tightened effectively.

[0008] Furthermore, an epoxy base is provided at the lower end of the resonant inductor, a metal base is installed at the lower end of the epoxy base, and the lower end of the capacitor divider is connected to the metal base, thereby increasing the height of the resonant inductor and preventing eddy current loss of the resonant inductor.

[0009] Furthermore, the rated voltages of the two sets of resonant reactors and capacitive voltage dividers are 500 kV and 300 kV, which are suitable for 110 kV GIS withstand voltage test, 220 kV GIS withstand voltage test, and 550 kV GIS withstand voltage test.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] (1) Two equalizing rings are clamped by two fastening plates. When a bolt is inserted into the inside of the stop ring, the head of the bolt is clamped by the stop ring. When the nut is tightened onto the bolt, only one wrench is needed to tighten the nut, which reduces the difficulty of the work. There is no need to manually limit the rotation of the bolt. The assembly of the equalizing ring is faster and the operation is simpler.

[0012] (2) Through the use of two sets of resonant inductors and capacitive voltage dividers individually or in combination, GIS withstand voltage tests of various voltages can be met, and the best matching solution can be selected according to the needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model after the pressure equalizing ring is assembled;

[0014] Figure 2 This is a schematic diagram of the structure of the connection between the resonant reactor and the grading ring of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the disassembled bracket of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the pressure equalizing ring of the utility model.

[0017] In the figure: 1. resonant inductor; 2. capacitor voltage divider; 3. equalizing ring; 4. metal base; 5. epoxy base; 6. opening; 7. bracket; 8. joint seat; 9. first silicone rubber umbrella skirt; 10. second silicone rubber umbrella skirt; 701. fastening plate; 702. stop ring; 703. bolt; 704. nut. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example:

[0020] See also Figure 1-4 The utility model provides a technical solution: a combined resonant reactor, comprising a joint seat 8, the upper and lower surfaces of the joint seat 8 are both equipped with a resonant reactor 1 and a capacitive voltage divider 2, the upper ends of the resonant reactor 1 and the capacitive voltage divider 2 are equipped with two grading rings 3, and a bracket 7 is installed between the two grading rings 3;

[0021] The rated voltages of the two groups of resonant reactors 1 and capacitor voltage dividers 2 are 500 kV and 300 kV, the rated voltage of the shorter resonant reactor 1 and capacitor voltage divider 2 located above the joint seat 8 is 300 kV, and the rated voltage of the longer resonant reactor 1 and capacitor voltage divider 2 located below the joint seat 8 is 500 kV;

[0022] The bracket 7 includes two fastening plates 701, and the fastening plates 701 have two fastening grooves on their surfaces. The fastening plates 701 are connected to the pressure equalizing ring 3 through the fastening grooves. A stop ring 702 is fixedly connected to the surface of the fastening plates 701. A bolt 703 penetrating the fastening plates 701 is inserted into the stop ring 702, and a nut 704 is screwed on the surface of the bolt 703.

[0023] The anti-rotation ring 702 has a hexagonal groove inside, which can clamp the head of the bolt 703 to ensure that the bolt 703 does not rotate. There is no need to use a wrench to clamp the bolt 703 to prevent rotation, which makes it easy for workers to install the two equalizing rings 3.

[0024] In this embodiment, if Figure 1 As shown, an epoxy base 5 is provided at the lower end of the resonant inductor 1. The epoxy base 5 has the function of insulation and fixing the resonant inductor 1, and increases the height of the inductor to prevent eddy current loss of the inductor. A metal base 4 is installed at the lower end of the epoxy base 5, and the lower end of the capacitive voltage divider is connected to the metal base 4 to support and fix the epoxy base 5 and the capacitive voltage divider 2.

[0025] In this embodiment, if Figure 1 As shown, the surfaces of the resonant reactor 1 and the capacitive voltage divider 2 are respectively provided with a first silicone rubber shed 9 and a second silicone rubber shed 10, which increase the external insulation creepage distance, making it more difficult for the current to jump over the first silicone rubber shed 9 and the second silicone rubber shed 10 and cause a short circuit.

[0026] In this embodiment, if Figure 1 As shown, the surface of the grading ring 3 is provided with an opening 6 to prevent eddy current loss of the reactor.

[0027] Specifically, when using, when assembling the two grading rings 3 of the reactor, the two fastening plates 701 are fastened on the surface of the grading ring 3, the bolt 703 is inserted into the inside of the stop ring 702 and passed through the fastening plate 701, and after the head of the bolt 703 is stuck by the stop ring 702, the staff uses a wrench to screw the nut 704 onto the bolt 703 to directly tighten the nut 704, thereby improving the convenience of disassembly and assembly of the grading ring 3;

[0028] When conducting GIS withstand voltage test, the maximum test voltage of 110 kV GIS withstand voltage test is 275 kV, and 300 kV resonant reactor 1 and capacitive voltage divider 2 can be selected;

[0029] The maximum test voltage of 220 kV GIS withstand voltage test is 460 kV, and 500 kV resonant reactor 1 and capacitive voltage divider 2 can be selected;

[0030] The maximum test voltage of 550 kV GIS withstand voltage test is 740 kV. At this time, the 500 kV and 300 kV resonant reactors 1 and capacitive voltage divider 2 can be stacked and used in series. This is the best matching solution designed for the GIS withstand voltage tests of these three voltage levels.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined resonant reactor, characterized in that: include: A combined seat (8), wherein the upper and lower surfaces of the combined seat (8) are both equipped with a resonant reactor (1) and a capacitive voltage divider (2), the upper ends of the resonant reactor (1) and the capacitive voltage divider (2) are equipped with two grading rings (3), and a bracket (7) is installed between the two grading rings (3); The bracket (7) includes two fastening plates (701), and the surface of the fastening plates (701) has two fastening grooves, the fastening plates (701) are connected to the pressure equalizing ring (3) through the fastening grooves, and the surface of the fastening plates (701) is fixedly connected with a stop ring (702), and a bolt (703) passing through the fastening plates (701) is inserted into the stop ring (702), and a nut (704) is threaded on the surface of the bolt (703).

2. A combined resonant reactor according to claim 1, characterized in that: The lower end of the resonant reactor (1) is provided with an epoxy base (5), the lower end of the epoxy base (5) is installed with a metal base (4), and the lower end of the capacitor voltage divider is connected to the metal base (4).

3. A combined resonant reactor according to claim 1, characterized in that: The surfaces of the resonant reactor (1) and the capacitive voltage divider (2) are respectively provided with a first silicone rubber shed (9) and a second silicone rubber shed (10).

4. A combined resonant reactor according to claim 1, characterized in that: The surface of the pressure equalizing ring (3) is provided with an opening (6).

5. The combined resonant reactor according to claim 1, characterized in that: The rated voltages of the two groups of resonant reactors (1) and the capacitive voltage divider (2) are 500 kV and 300 kV.

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