Capacitor partial discharge measuring device

Abstract

The utility model relates to capacitor partial discharge test technical field discloses a kind of capacitor partial discharge measurement device, including support, first drive component and measuring instrument.First drive component includes first driving part, gear, two connecting arms and the rack being set on each connecting arm, first driving part is fixedly arranged on support, gear rotation is arranged on support, two connecting arms are slidably arranged on the both sides of gear along first direction, and the rack on two connecting arms is all engaged with gear.Measuring instrument includes two measuring probes respectively arranged on two connecting arms, when first driving part drives two connecting arms to mutually approach or mutually away, two connecting arms can respectively drive two measuring probes to mutually approach or mutually away, to measure capacitor or separate capacitor.The capacitor partial discharge measurement device realizes automatic clamping and measures capacitor and automatic separation capacitor, avoids manual operation;And overall structure is simple, convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of capacitor partial discharge testing technology, and in particular to a capacitor partial discharge measuring device. Background Technology

[0002] High-voltage parallel capacitors are capacitors with high voltage withstand capability and can operate at high voltage levels, such as in power systems with voltage levels of 6kV, 10kV, 35kV, and even higher, to meet the reactive power compensation needs of power grids at different voltage levels. To ensure that the performance of high-voltage parallel capacitors meets requirements, partial discharge testing is necessary. In existing technologies, the partial discharge testing method involves manually holding two measuring probes and attaching them to the two outer walls of the high-voltage parallel capacitor. A measuring instrument then measures the capacitor through the probes and records the data.

[0003] The above-mentioned manual testing methods not only waste a lot of manpower, but also pose a risk of electric shock to operators during the testing process. Utility Model Content

[0004] The present invention provides a capacitor partial discharge measuring device that can avoid manual operation and reduce the risk of electric shock to operators.

[0005] The above-mentioned technical problems are solved by the following technical solutions:

[0006] A capacitor partial discharge measuring device includes:

[0007] support;

[0008] The first drive assembly includes a first drive member, a gear, two connecting arms, and a rack disposed on each of the connecting arms. The first drive member is fixedly disposed on the bracket, the gear is rotatably disposed on the bracket, the two connecting arms are slidably disposed on both sides of the gear along a first direction, and the racks on the two connecting arms are meshed with the gear. The drive end of the first drive member is connected to one of the connecting arms.

[0009] The measuring instrument includes two measuring probes respectively disposed on the two connecting arms. The first driving member can drive the two connecting arms to move closer to each other or further away from each other along the first direction, so that the two connecting arms respectively drive the two measuring probes to move closer to each other to clamp the measuring capacitor or to move further away from each other to detach from the capacitor.

[0010] In one embodiment, the bracket is provided with clamping members on both sides of the gear along the second direction, and the racks on the two connecting arms are provided on both sides of the gear along the second direction, and the racks on the two connecting arms are respectively clamped between the gear and the corresponding clamping members;

[0011] The first direction and the second direction are perpendicular to each other.

[0012] In one embodiment, the connecting arm is slidably connected to the bracket via a first guide rail slider structure.

[0013] In one embodiment, a buffer structure is provided on the connecting arm, and the measuring probe is disposed on the buffer structure.

[0014] In one embodiment, the buffer structure includes:

[0015] A fixing plate is fixedly connected to the corresponding connecting arm;

[0016] A sliding column is slidably connected to the fixed plate along the first direction;

[0017] A buffer plate is disposed at the end of the sliding column away from the fixed plate, and the measuring probe is disposed on the buffer plate;

[0018] A spring is sleeved on the sliding column and elastically clamped between the fixed plate and the buffer plate.

[0019] In one embodiment, at least two sliding posts and two springs are provided, with each spring correspondingly fitted onto a corresponding sliding post.

[0020] In one embodiment, the bracket includes a base and a support plate, the support plate being slidably disposed on the base along a second direction, the first driving component being disposed on the support plate, and the first direction and the second direction being perpendicular to each other;

[0021] The capacitor partial discharge measuring device further includes a second driving member, which is fixedly mounted on the base. The driving end of the second driving member is connected to the supporting horizontal plate, and the second driving member is used to drive the supporting horizontal plate to slide back and forth along the second direction.

[0022] In one embodiment, the support plate is slidably connected to the base via a second guide rail slider structure.

[0023] In one embodiment, both the first drive member and the second drive member are cylinders, hydraulic cylinders, or electric cylinders.

[0024] In one embodiment, the base includes a bottom crossbeam and a support plate, the support plate being fixedly mounted on the bottom crossbeam, the second driving member being fixedly mounted on the support plate, and the support crossbeam being slidably mounted on the support plate.

[0025] The beneficial effects of this utility model are as follows:

[0026] The capacitor partial discharge measuring device provided by this utility model, through the cooperation of gears and racks, enables the first driving component to simultaneously drive the two connecting arms to move closer or further apart, and then set the two measuring probes on the two connecting arms respectively, so that the two measuring probes move closer to each other to automatically clamp and measure the capacitor or move further apart to automatically detach from the capacitor, avoiding manual operation and effectively reducing the risk of electric shock to the operator; and the overall structure is simple and easy to operate. Attached Figure Description

[0027] Fig. 1 This is a schematic diagram of the capacitor partial discharge measuring device provided in this embodiment of the utility model;

[0028] Fig. 2 This is a schematic diagram of the buffer structure involved in the embodiment of this utility model.

[0029] In the picture:

[0030] 1. Bracket; 11. Support plate; 12. Bottom beam; 13. Support plate; 14. Second guide rail slider structure;

[0031] 2. First drive assembly; 21. First drive component; 22. Gear; 23. Connecting arm; 24. Clamping component; 25. First guide rail slider structure; 26. Rack;

[0032] 3. Measuring probe;

[0033] 4. Buffer structure; 41. Fixed plate; 42. Sliding column; 43. Buffer plate; 44. Spring;

[0034] 5. Second drive unit. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0036] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] This utility model provides a capacitor partial discharge measuring device for automatically clamping and measuring capacitors, avoiding manual intervention, saving manpower and reducing the risk of electric shock to operators.

[0040] like Figs. 1-2 As shown, the capacitor partial discharge measuring device includes a bracket 1, a first drive assembly 2, and a measuring instrument.

[0041] The first driving assembly 2 includes a first driving member 21, a gear 22, two connecting arms 23, and a rack 26 disposed on each connecting arm 23. The first driving member 21 is fixedly disposed on the bracket 1, the gear 22 is rotatably disposed on the bracket 1, and the two connecting arms 23 are slidably disposed on both sides of the gear 22 along a first direction. The racks 26 on both connecting arms 23 are meshed with the gear 22. The driving end of the first driving member 21 is fixedly connected to one of the connecting arms 23, so that when the driving end of the first driving member 21 drives the corresponding connecting arm 23 to slide back and forth along the first direction, the connecting arm 23 drives its own rack 26 to move back and forth simultaneously, thereby driving the gear 22 to rotate. The gear 22 drives the other connecting arm 23 to slide back and forth along the first direction through the rack 26 on the other connecting arm 23. This structure realizes that the first driving member 21 can simultaneously drive the two connecting arms 23 to move closer or further away from each other.

[0042] The measuring instrument includes two measuring probes 3 (partial discharge ultrasonic probes) respectively mounted on two connecting arms 23. When the first driving member 21 drives the two connecting arms 23 to move closer or further apart, the two connecting arms 23 can respectively drive the two measuring probes 3 to move closer or further apart. This allows the capacitor to be placed between the two measuring probes 3 when measuring the capacitor using this capacitor partial discharge measuring device. The first driving member 21 drives the two connecting arms 23 to move closer together, thereby driving the two measuring probes 3 to move closer together and clamp the outer wall of the capacitor for measurement. After the capacitor measurement is completed, the first driving member 21 drives the two connecting arms 23 to move further apart to detach from the capacitor.

[0043] The capacitor partial discharge measuring device uses gear 22 and rack 26 to enable the first driving component 21 to simultaneously drive the two connecting arms 23 to move closer or further apart. Then, the two measuring probes 3 are respectively set on the two connecting arms 23, so that the two measuring probes 3 can move closer to each other to automatically clamp and measure the capacitor or move further apart to automatically detach from the capacitor. This avoids manual operation and can effectively reduce the risk of electric shock to the operator. Moreover, the overall structure is simple and easy to operate.

[0044] In this embodiment, the capacitor partial discharge measuring device also includes an automatic control host computer, which controls the first driving component 21 to operate and cooperates with the measuring instrument to realize that the measuring instrument automatically measures and records data through the measuring probe 3, so as to achieve fully automated control.

[0045] Optionally, the bracket 1 includes a base and a supporting horizontal plate 11. The supporting horizontal plate 11 is slidably disposed on the base along a second direction (perpendicular to the first direction), and the first driving assembly 2 is disposed on the supporting horizontal plate 11. The capacitor partial discharge measuring device also includes a second driving member 5, which is fixedly disposed on the base, and the driving end of the second driving member 5 is connected to the supporting horizontal plate 11. This structure allows the second driving member 5 to drive the supporting horizontal plate 11 to move toward the capacitor along the second direction when the capacitor is transported to a designated position via upstream equipment, thereby positioning the capacitor between the two measuring probes 3 on the two connecting arms 23. The first driving member 21 then drives the two connecting arms 23 to move closer to each other, so that the measuring probes 3 on the two connecting arms 23 are clamped to the two side walls of the capacitor, thereby achieving automated production.

[0046] Optionally, the connecting arm 23 is slidably connected to the supporting horizontal plate 11 via the first guide rail slider structure 25. The first guide rail slider structure 25 includes a first guide rail and a first slider slidably disposed on the first guide rail. The first guide rail is fixedly disposed on the supporting horizontal plate 11 and extends along a first direction. The first slider is fixedly connected to the corresponding connecting arm 23 to realize the slidable connection between the connecting arm 23 and the supporting horizontal plate 11 of the bracket 1.

[0047] Optionally, the support plate 11 is slidably connected to the base via the second guide rail slider structure 14. The second guide rail slider structure 14 includes a second guide rail and a second slider slidably disposed on the second guide rail. The second guide rail is fixedly disposed on the base and extends along the second direction. The second slider is fixedly connected to the support plate 11 to achieve a slidable connection between the support plate 11 and the base.

[0048] In this embodiment, the base includes a bottom crossbeam 12 and a support plate 13. The support plate 13 is fixedly mounted on the bottom crossbeam 12 and is inclined. The second driving member 5 is fixedly mounted on the support plate 13, and the support plate 11 is slidably mounted on the support plate 13. This structure, by setting the support plate 13, enables the support plate 11 to tilt downward when the second driving member 5 drives the support plate 11 to move the first driving component 2 toward the capacitor, so as to be suitable for production line production.

[0049] In this embodiment, each connecting arm 23 is provided with a rack 26, and the two racks 26 respectively provided on the two connecting arms 23 are arranged on both sides of the gear 22 along the second direction.

[0050] To ensure that the two racks 26 and the gear 22 remain in mesh and to prevent tooth disengagement, optionally, clamping members 24 are provided on both sides of the gear 22 along the second direction on the support plate 11 of the bracket 1. The racks 26 on the two connecting arms 23 are arranged on both sides of the gear 22 along the second direction, and the racks 26 on the two connecting arms 23 are respectively pressed between the gear 22 and the corresponding clamping member 24 to ensure that the racks 26 can always press against the gear 22. In this embodiment, the clamping member 24 can be selected as a pressure roller. When the two connecting arms 23 slide back and forth along the first direction, the racks 26 move simultaneously, and the gear 22 drives the clamping member 24 to rotate. The clamping member 24 provides a limiting force for the racks 26 so that the racks 26 can always press against the gear 22 to ensure stable meshing. In other embodiments, the clamping member 24 can also be selected as a pressure block. The pressure block and the racks 26 have sliding friction, which can also achieve the clamping of the corresponding racks 26, but it will increase the wear between the parts compared to the pressure roller.

[0051] Optionally, each of the two connecting arms 23 is provided with a buffer structure 4, and the measuring probe 3 is disposed on the buffer structure 4. When the first driving member 21 drives the two connecting arms 23 to move closer to each other so that the two measuring probes 3 clamp the capacitor, the buffer structure 4 can ensure that the measuring probe 3 can absorb the impact force when it contacts the capacitor, so as to avoid rigid collision and damage to the measuring probe 3 or the capacitor, and improve the service life of the measuring probe 3.

[0052] Specifically, such as Fig. 2 As shown, the buffer structure 4 includes a fixed plate 41, a sliding column 42, a buffer plate 43, and a spring 44. The fixed plate 41 is fixedly connected to the corresponding connecting arm 23. The sliding column 42 is slidably connected to the fixed plate 41 along a first direction. The buffer plate 43 is fixedly disposed at the end of the sliding column 42 away from the fixed plate 41. The measuring probe 3 is disposed on the buffer plate 43. The spring 44 is sleeved on the sliding column 42 and elastically clamped between the fixed plate 41 and the buffer plate 43. When the first driving member 21 drives the two connecting arms 23 to bring the two measuring probes 3 closer to each other, the measuring probe 3 abuts against the capacitor and can compress the spring 44 through the buffer plate 43, so that the measuring probe 3 has a certain buffer distance and avoids the measuring probe 3 from colliding with the capacitor.

[0053] Furthermore, multiple (at least two) sliding columns 42 and springs 44 are provided. Multiple sliding columns 42 are slidably connected to the fixed plate 41, and the buffer plate 43 is simultaneously fixedly connected to the ends of multiple sliding columns 42. Multiple springs 44 are correspondingly sleeved on multiple sliding columns 42 and simultaneously elastically abut against the buffer plate 43 and the fixed plate 41. This structure, by providing at least two sliding columns 42, can improve the stability of the buffer plate 43, and by providing multiple springs 44, can improve the buffering capacity of the buffer structure 4, and can effectively ensure the clamping force of the measuring probe 3, thereby ensuring the accuracy of the measurement data.

[0054] In this embodiment, the connecting arm 23 not connected to the driving end of the first driving member 21 can be configured as an L-shaped structure. The L-shaped connecting arm 23 includes a first connecting part and a second connecting part that are perpendicular to each other. The first connecting part is slidably connected to the supporting horizontal plate 11 through the first guide rail slider structure 25, and the second connecting part is used to install the measuring probe 3. The connecting arm 23 connected to the driving end of the first driving member 21 can be configured as a T-shaped structure. The T-shaped connecting arm 23 includes a middle part and a side connecting part that are perpendicular to each other. The middle part is slidably connected to the supporting horizontal plate 11 through the first guide rail slider structure 25. One end of the side connecting part is used to install the measuring probe 3, and the other end of the side connecting part is used to connect to the driving end of the first driving member 21.

[0055] Optionally, both the first driving component 21 and the second driving component 5 can be selected as a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. By setting the first driving component 21 as a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder, the linear movement of the connecting arm 23 can be directly realized, which is simple in structure and easy to assemble; by setting the second driving component 5 as a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder, the linear movement of the supporting cross plate 11 can be directly realized, which is simple in structure and easy to assemble.

[0056] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0057] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A capacitor partial discharge measuring device, characterized in that, include: Scaffold (1); The first drive assembly (2) includes a first drive member (21), a gear (22), two connecting arms (23), and a rack (26) disposed on each of the connecting arms (23). The first drive member (21) is fixedly disposed on the bracket (1). The gear (22) is rotatably disposed on the bracket (1). The two connecting arms (23) are slidably disposed on both sides of the gear (22) along a first direction, and the racks (26) on the two connecting arms (23) are meshed with the gear (22). The drive end of the first drive member (21) is connected to one of the connecting arms (23). The measuring instrument includes two measuring probes (3) respectively disposed on the two connecting arms (23). The first driving member (21) can drive the two connecting arms (23) to move closer to each other or further away from each other along the first direction, so that the two connecting arms (23) respectively drive the two measuring probes (3) to move closer to each other to clamp the measuring capacitor or to move further away from each other to detach from the capacitor.

2. The capacitor partial discharge measuring device according to claim 1, characterized in that, The bracket (1) is provided with clamping members (24) on both sides of the gear (22) along the second direction. The racks (26) on the two connecting arms (23) are provided on both sides of the gear (22) along the second direction, and the racks (26) on the two connecting arms (23) are respectively clamped between the gear (22) and the corresponding clamping members (24). The first direction and the second direction are perpendicular to each other.

3. The capacitor partial discharge measuring device according to claim 1, characterized in that, The connecting arm (23) is slidably connected to the bracket (1) through the first guide rail slider structure (25).

4. The capacitor partial discharge measuring device according to claim 1, characterized in that, A buffer structure (4) is provided on the connecting arm (23), and the measuring probe (3) is provided on the buffer structure (4).

5. The capacitor partial discharge measuring device according to claim 4, characterized in that, The buffer structure (4) includes: The fixing plate (41) is fixedly connected to the corresponding connecting arm (23); The sliding column (42) is slidably connected to the fixed plate (41) along the first direction; A buffer plate (43) is disposed at the end of the sliding column (42) away from the fixed plate (41), and the measuring probe (3) is disposed on the buffer plate (43); A spring (44) is sleeved on the sliding column (42) and elastically clamped between the fixed plate (41) and the buffer plate (43).

6. The capacitor partial discharge measuring device according to claim 5, characterized in that, At least two of each of the sliding posts (42) and springs (44) are provided, and each spring (44) is fitted onto the corresponding sliding post (42) in a one-to-one correspondence.

7. The capacitor partial discharge measuring device according to claim 1, characterized in that, The bracket (1) includes a base and a support plate (11). The support plate (11) is slidably disposed on the base along a second direction. The first drive assembly (2) is disposed on the support plate (11). The first direction and the second direction are perpendicular to each other. The capacitor partial discharge measuring device further includes a second driving member (5), which is fixedly mounted on the base. The driving end of the second driving member (5) is connected to the support plate (11), and the second driving member (5) is used to drive the support plate (11) to slide back and forth along the second direction.

8. The capacitor partial discharge measuring device according to claim 7, characterized in that, The supporting horizontal plate (11) is slidably connected to the base through the second guide rail slider structure (14).

9. The capacitor partial discharge measuring device according to claim 7, characterized in that, Both the first drive unit (21) and the second drive unit (5) are cylinders, hydraulic cylinders or electric cylinders.

10. The capacitor partial discharge measuring device according to claim 7, characterized in that, The base includes a bottom crossbeam (12) and a support plate (13). The support plate (13) is fixedly mounted on the bottom crossbeam (12), the second driving member (5) is fixedly mounted on the support plate (13), and the support crossbeam (11) is slidably mounted on the support plate (13).

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