DCC capacitor switching device for power test

Abstract

The utility model belongs to the technical field of electric power testing, and particularly relates to a DCC capacitor switching device for electric power testing, which comprises a rack, a sheath, three groups of switching electrifying mechanisms, a copper rod and a connection relation thereof. According to the invention, 'switching of three groups of capacitors' is converted into'switching of three electrified ball rods', the copper rod can only be in contact with one of the three electrified ball rods, and connection switching of the three electrified ball rods is completed by means of rotation of the sheath, so that capacitance switching of the three groups of capacitors is completed; only one servo motor is needed, multiple driving sources are not needed, the operation mode is greatly simplified, and the failure rate is reduced; meanwhile, the overall structure is compact, structural components are reduced, correspondingly, the size and weight of the overall structure are reduced, and practical application is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of power testing, in particular to a DCC capacitor switching device for power testing. Background Art

[0002] The special technical requirements of the series-parallel switching mechanism of high-voltage discharge capacitors, especially to ensure the ultra-high voltage insulation requirements, make the switching mechanism difficult to manufacture, the mechanism is bulky, and the processing technology is complicated. Most of the cable fault testing equipment with switching mechanisms on the market now mainly uses manual switching, and the degree of automation is not high. At the same time, in order to ensure the high-voltage insulation withstand voltage requirements, the switching mechanism also occupies a lot of space in the high-voltage equipment.

[0003] After searching, Chinese patent announcement number CN212277970U discloses a series-parallel switching device for high-voltage power capacitors. Although the high-voltage power capacitor series-parallel switching device of this technical solution solves the problems of difficulty in manufacturing the switching mechanism, complex processing technology, and low degree of automation in the prior art. However, in actual use, it is found that there are still the following defects: the device uses two sets of motors and screw rods to operate, resulting in a large overall volume and inconvenient placement; the two sets of motors used in the device have a high failure rate, and the adjustment method requires moving first and then rotating, which is inefficient. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems existing in the background technology, and for this purpose, a DCC capacitor switching device for power testing is provided.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A DCC capacitor switching device for power testing comprises a frame, a sheath, three sets of switching power-on mechanisms and a copper rod; the sheath is rotatably arranged on the frame; the three sets of switching power-on mechanisms are all arranged in the sheath for switching capacitance test values;

[0007] The switching power supply mechanism includes a power supply bat, a spring and a spring stop plate, wherein the spring stop plate is fixed in the inner cavity of the sheath, and the head end of the power supply bat moves through the annular groove preset in the middle of the sheath, and the tail end of the power supply bat moves through the spring stop plate;

[0008] The copper rod is insulated and installed on the frame; the electrified ball rod is in contact with the copper rod; three groups of capacitors are installed in the sheath, and the three groups of capacitors are electrically connected to the three electrified ball rods respectively.

[0009] The following is a technical solution further defined by the present utility model: a servo motor is installed on one side of the frame, and the driving shaft of the servo motor is dynamically connected to the sheath.

[0010] The following is a technical solution further defined by the utility model, in which the side of the sleeve away from the servo motor drive shaft is fixedly connected to a cover plate by screws, the cover plate is fixedly connected to one end of the auxiliary shaft, the other end of the auxiliary shaft is connected to a side plate by a bearing, and the side plate is fixedly mounted on the frame by bolts.

[0011] The following is a technical solution further defined by the utility model: the spring is sleeved on the electrified ball bat and is located between the pressure plate and the spring limiting plate, and the pressure plate is fixedly sleeved on the electrified ball bat.

[0012] The following is a technical solution further defined by the present utility model: the copper rod is covered with an insulating resin sleeve, and the insulating resin sleeve is fixedly inserted through the frame.

[0013] Compared with the prior art, the utility model has the following technical effects:

[0014] The present invention converts "switching of three groups of capacitors" into "switching of three electrified bats". Since the copper rod can only contact one of the three electrified bats, the three electrified bats are connected and switched by the rotation of the sheath, thereby completing the capacitance switching of the three groups of capacitors.

[0015] The present invention only requires one servo motor and no multiple drive sources, which greatly simplifies the operation mode and reduces the failure rate; at the same time, the overall structure is compact, the structural components are reduced, and correspondingly, the volume and weight of the overall structure are also reduced, which is conducive to practical application.

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the sheath in the utility model;

[0020] Figure 3 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0021] In the figure: 1. frame; 2. insulating resin sleeve; 3. copper rod; 4. servo motor; 5. capacitor; 6. sheath; 7. annular groove; 8. cover plate; 9. side plate; 10. powered bat; 11. spring; 12. spring limit plate; 13. pressure plate. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0025] like Figure 1-3 As shown, a DCC capacitor switching device for power testing is provided, including a frame 1, a sheath 6, three sets of switching power-on mechanisms and a copper rod 3.

[0026] The sheath 6 is rotatably arranged on the frame. Specifically, a servo motor 4 is installed on one side of the frame 1, and the driving shaft of the servo motor 4 is dynamically connected to the sheath 6, that is, the sheath 6 and the driving shaft are fixedly connected, and the driving shaft is installed on the frame 1 through a bearing. The servo motor 4 is in operation, so that the driving shaft rotates, thereby driving the sheath 6 to rotate. Furthermore, the side of the sheath 6 away from the driving shaft of the servo motor 4 is fixedly connected to the cover plate 8 by screws, and the cover plate 8 is fixedly connected to one end of the auxiliary shaft, and the other end of the auxiliary shaft is connected to the side plate 9 by a bearing, and the side plate 9 is fixedly installed on the frame 1 by bolts; the side plate 9 can be removed by loosening the bolts, and the cover plate 8 can be removed by loosening the screws, so that the structure inside the sheath 6 can be set, then, three groups of capacitors 5 are fixedly installed in the sheath 6.

[0027] Three sets of switching power-on mechanisms are all arranged in the sheath, and are used to switch the capacitance test value. Specifically, the switching power-on mechanism includes a power-on ball bat 10, a spring 11, and a spring stop plate 12. The spring stop plate 12 is fixed in the inner cavity of the sheath 6, and the head end of the power-on ball bat 10 moves through the annular groove 7 preset in the middle of the sheath 6, and the tail end of the power-on ball bat 10 moves through the spring stop plate 12. The spring 11 is sleeved on the power-on ball bat 10, and is located between the pressure plate 13 and the spring stop plate 12, and the pressure plate 13 is fixedly sleeved on the power-on ball bat 10. The power-on ball bat 10 is in contact with the copper rod 3.

[0028] The three groups of capacitors 5 are electrically connected to the three powered bats 10 respectively.

[0029] Each time the sheath 6 is rotated to adjust an angle, the electrified ball bat 10 will move out of the arc-shaped depression of the copper rod 3 until the next electrified ball bat 10 is rotated over and falls into the depression of the copper rod 3 to be electrified.

[0030] The copper rod 3 is insulated and installed on the frame 1 ; specifically, the copper rod 3 is covered with an insulating resin sleeve 2 , and the insulating resin sleeve 2 is fixed and passes through the frame 1 .

[0031] In summary, this embodiment has three groups of capacitors 5. In the process of switching the capacitance of the three groups of capacitors 5, since the three groups of capacitors 5 are electrically connected to the three electrified bats 10 respectively, it is converted into switching the connection of the three electrified bats 10: since the copper rod 3 can only contact one of the three electrified bats 10, the connection switching of the three electrified bats 10 is completed by the rotation of the sheath 6, and then the capacitance switching of the three groups of capacitors 5 is completed. Finally, the sheath 6 only needs one servo motor 4 to rotate, which greatly simplifies the operation mode and reduces the failure rate; at the same time, the overall structure is compact, and compared with the prior art, the structural components are reduced, and accordingly, the volume and weight of the overall structure are also reduced, which is conducive to practical application.

[0032] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the utility model by using the above disclosed methods and technical contents without departing from the scope of the technical solution of the utility model, or modify it into an equivalent embodiment of equivalent changes. Therefore, all equivalent changes made according to the shape, structure and principle of the utility model without departing from the content of the technical solution of the utility model should be included in the protection scope of the utility model.

Claims

1. A DCC capacitor switching device for power testing, characterized in that: include: Rack (1); A sheath (6) is rotatably mounted on the frame (1); The switching power-on mechanism is divided into three groups, all of which are arranged in the sheath (6) and are used to switch the capacitance test value; the switching power-on mechanism comprises a power-on ball bat (10), a spring (11) and a spring stop plate (12); the spring stop plate (12) is fixed in the inner cavity of the sheath (6); the head end of the power-on ball bat (10) movably penetrates the annular groove (7) preset in the middle of the sheath (6); and the tail end of the power-on ball bat (10) movably penetrates the spring stop plate (12); A copper rod (3) is insulated and mounted on the frame (1); The energized ball rod (10) is in contact with the copper rod (3); Three groups of capacitors (5) are installed in the sheath (6), and the three groups of capacitors (5) are electrically connected to three electrified bats (10) respectively.

2. A DCC capacitor switching device for power testing according to claim 1, characterized in that: A servo motor (4) is installed on one side of the frame (1), and the driving shaft of the servo motor (4) is dynamically connected to the sheath (6).

3. A DCC capacitor switching device for power testing according to claim 2, characterized in that: The side of the sleeve (6) away from the driving shaft of the servo motor (4) is fixedly connected to the cover plate (8) by screws, and the cover plate (8) is fixedly connected to one end of the auxiliary shaft. The other end of the auxiliary shaft is connected to the side plate (9) through a bearing, and the side plate (9) is fixedly mounted on the frame (1) by bolts.

4. A DCC capacitor switching device for power testing according to claim 1, characterized in that: The spring (11) is sleeved on the electrified ball bat (10) and is located between the pressing plate (13) and the spring limiting plate (12); the pressing plate (13) is fixedly sleeved on the electrified ball bat (10).

5. A DCC capacitor switching device for power testing according to claim 1, characterized in that: The copper rod (3) is covered with an insulating resin sleeve (2) on the outside, and the insulating resin sleeve (2) is fixedly inserted through the frame (1).

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