CN219162294U

CN219162294U - Electrode gap adjusting device for insulating oil pressure-proof detection

Info

Publication number: CN219162294U
Application number: CN202320074415.8U
Authority: CN
Inventors: 易锫; 张明
Original assignee: Electric Power Research Institute of State Grid Hubei Electric Power Co Ltd
Current assignee: Electric Power Research Institute of State Grid Hubei Electric Power Co Ltd
Priority date: 2023-01-07
Filing date: 2023-01-07
Publication date: 2023-06-09
Anticipated expiration: 2033-01-07

Abstract

The application relates to an electrode gap adjusting device for insulating oil withstand voltage detects, including top panel, control two fine setting mechanism, two side backup pads around, two board measuring mechanism and scale observation mechanism, top panel central point puts and is provided with the calibrated scale, and the scale observation mechanism for observing the scale is installed to the top of calibrated scale, two board measuring mechanism includes left side board and the right side board through the hub connection, still is provided with the pointer that is used for extending to the calibrated scale below on the right side board, the calibrated scale design is 45 for the slope of convenient observation, the top of pointer is provided with the kink, the scale mark on the directional calibrated scale of kink. According to the utility model, the dial and the pointer are both inclined by 45 degrees, so that the dial is ensured to be opposite to an operator when the device is horizontally placed, the operator can conveniently read data, and in addition, the scale marks on the dial are made of fluorescent materials, so that the device can accurately read under the condition of darker light.

Description

Electrode gap adjusting device for insulating oil pressure-proof detection

Technical Field

The utility model relates to the field of insulating oil withstand voltage detection, in particular to an electrode gap adjusting device for insulating oil withstand voltage detection.

Background

The breakdown voltage test of insulating oil is to make the insulating oil under the action of alternating electric field to prevent electron collapse, and when the voltage is high enough, the resistance of insulating oil between two electrodes suddenly drops greatly, the current is increased sharply, and the electrodes are conducted, so that the insulating oil is broken down. The alternating voltage at which this breakdown phenomenon occurs is called the "breakdown voltage" and is an important indicator for characterizing the electrical strength of the insulating oil.

In an insulating oil breakdown voltage tester, there are many factors affecting the insulating oil breakdown voltage, among which the factors related to detecting the oil cup portion are: the electrode material, electrode shape, electrode area, electrode distance, oil cup material, oil cup shape, oil cup size are tested. The electrode shape affects the performance of breakdown voltage, so that in the insulating oil breakdown voltage detection standard, the flat plate electrode and the spherical and spherical cover electrodes are respectively distinguished.

Since the breakdown process of insulating oil is affected by many factors, the process often shows obvious randomness, and the dispersibility of test data is larger, which is a statistic value. Because of the inherent factors, to ensure the correctness of the insulating oil withstand voltage detection result, the detection conditions created by the test operator in the preparation stage of the test are particularly important. Under the condition of certain test voltage, the primary factor of ensuring breakdown is the spacing of electrodes, and in the test of insulating oil withstand voltage detection, the spacing of the electrodes for testing the oil cup is definitely required, and for the spherical cap-shaped electrodes, the spacing of the electrodes is required to be 2.5mm plus or minus 0.05mm. The gap between the measurement planes is good, and the surface of the spherical cover electrode used for the insulating oil pressure resistance test is a curved surface, so that the surface curvature and the shape of the electrode can be changed due to the influence of the factors such as the manufacturing of the spherical surface, the assembly and the matching of the oil cup electrode and the shape change caused by the irregular polishing of the electrode in the use process. When the electrode spacing is detected by using a conventional gap gauge, the measurement data of the electrode gap of the spherical cap is often inaccurate due to the fact that the insertion angle of the gap gauge cannot be accurately grasped, the error varies from person to person, or the gap is measured again after the gap is locked, and the gap is found to be changed. The electrode spacing for the withstand voltage test requires high accuracy, and the result of the insulating oil withstand voltage test performed in this case may be inaccurate, resulting in an increase in uncertainty.

The electrode gap adjusting device for insulating oil voltage withstand test described in the chinese patent 201921703360.2 uses geometric principle to amplify the displacement vectors of two flat plates in proportion, and amplifies the tiny distance and displacement, thereby being beneficial to the use of operators and ensuring the accuracy of electrode discharge gap adjustment. However, in the above patent, the dial is disposed vertically, which is inconvenient to observe and is not conducive to the operator to read the data.

Disclosure of Invention

An aim of the embodiment of the application is to provide an electrode gap adjusting device for insulating oil withstand voltage detection, improve calibrated scale and pointer for the reading is accurate directly perceived, and operating personnel of being convenient for reads.

In order to achieve the above purpose, the present application provides the following technical solutions:

the embodiment of the application provides an electrode gap adjusting device for insulating oil pressure resistance detection, which comprises an upper panel, a left fine tuning mechanism, a right fine tuning mechanism, a front side support plate, a rear side support plate, a double-plate measuring mechanism and a scale observing mechanism, wherein the upper ends of the two side support plates are connected with the front side and the rear side of the upper panel, and the lower ends of the side support plates are supported on an oil cup glass frame and used for supporting the upper panel and are positioned above the cup mouth of an oil cup; the center of the upper panel is provided with a dial, a scale observation mechanism for observing scales is arranged above the dial, and the left side and the right side of the upper panel are connected with fine adjustment mechanisms; the upper ends of the two fine tuning mechanisms are fixedly connected with the lower surfaces of the left side and the right side of the upper panel and used for supporting the left side and the right side of the upper panel, and the lower ends of the fine tuning mechanisms are provided with adjusting screws for adjusting the height of the upper panel in the vertical direction; the fine adjustment mechanism is also provided with a beam frame for supporting a double-plate measuring mechanism, and the double-plate measuring mechanism is arranged on the beam frame through a shaft and is positioned in the middle of the beam frame; the double-plate measuring mechanism comprises a left side plate and a right side plate which are connected through a shaft, a pointer which is used for extending to the lower portion of the dial is further arranged on the right side plate, the dial is designed to be inclined by 45 degrees for convenient observation, the top end of the pointer is provided with a bending part, and the bending part points to scale marks on the dial.

The scale mark on the dial comprises a groove formed in the dial, a rare earth fluorescent material layer is coated in the groove, and the groove is sealed by a resin protective layer above the rare earth fluorescent material layer.

The bending part is bent at 45 degrees with the pointer body.

Compared with the prior art, the beneficial effects of this application are: this application all sets up 45 with calibrated scale and pointer into the slope, can ensure when the device level is placed, and the calibrated scale is just to the operator, makes things convenient for the operator to carry out the reading of data, and in addition, the scale mark on the calibrated scale adopts fluorescent material, makes it also can accurate reading under the condition of light darkness or special light source such as ultraviolet ray.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the positions of the pointer and dial of the present utility model;

FIG. 3 is a schematic front view of a dial of the present utility model;

FIG. 4 is a schematic cross-sectional view of a dial of the present utility model.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

As shown in fig. 1 to 4, the embodiment of the utility model provides an electrode gap adjusting device 1 for insulating oil withstand voltage detection, which comprises an upper panel, a left fine tuning mechanism, a right fine tuning mechanism, a front side support plate, a rear side support plate, a double-plate measuring mechanism and a scale observing mechanism, wherein the upper ends of the two side support plates are connected with the front side and the rear side of the upper panel, the lower ends of the side support plates are supported on a glass frame of an oil cup, and the upper panel is supported and positioned above the cup opening of the oil cup; the center of the upper panel is provided with a dial 3, a scale observation mechanism for observing scales is arranged above the dial 3, and the left side and the right side of the upper panel are connected with fine adjustment mechanisms; the upper ends of the two fine tuning mechanisms are fixedly connected with the lower surfaces of the left side and the right side of the upper panel and used for supporting the left side and the right side of the upper panel, and the lower ends of the fine tuning mechanisms are provided with adjusting screws for adjusting the height of the upper panel in the vertical direction; the fine adjustment mechanism is also provided with a beam frame for supporting a double-plate measuring mechanism, and the double-plate measuring mechanism is arranged on the beam frame through a shaft and is positioned in the middle of the beam frame; the double-plate measuring mechanism comprises a left side plate and a right side plate which are connected through a shaft, a pointer 2 which is used for extending to the lower part of a dial 3 is further arranged on the right side plate, the dial is designed to be inclined by 45 degrees for convenient observation, the top end of the pointer 2 is provided with a bending part, and the bending part 4 points to a scale mark 5 on the dial 3.

The scale mark 5 on the dial 3 comprises a groove 6 formed in the dial, a rare earth fluorescent material layer 7 is coated in the groove 6, and the groove 6 is sealed by a resin protective layer 8 above the rare earth fluorescent material layer 7.

The bending part 4 is bent at 45 degrees with the pointer body.

This application has avoided operating personnel to stand the not enough of overlooking the calibrated scale when using, and is direct with calibrated scale and pointer all slope 45, makes things convenient for the operator to observe, in addition, coating rare earth fluorescent material layer in the recess of calibrated scale, can carry out scale display when special light source or weak light source to, seal with the resin protective layer on rare earth fluorescent material layer, prevent that rare earth fluorescent material layer from wearing and tearing, cause the problem that partial scale mark does not appear.

The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. The electrode gap adjusting device for insulating oil pressure resistance detection comprises an upper panel, a left fine adjustment mechanism, a right fine adjustment mechanism, a front side support plate, a rear side support plate, a double-plate measurement mechanism and a scale observation mechanism, wherein the upper ends of the two side support plates are connected with the front side and the rear side of the upper panel, and the lower ends of the side support plates are supported on a glass frame of an oil cup and used for supporting the upper panel above the cup opening of the oil cup; the center of the upper panel is provided with a dial, a scale observation mechanism for observing scales is arranged above the dial, and the left side and the right side of the upper panel are connected with fine adjustment mechanisms; the upper ends of the two fine tuning mechanisms are fixedly connected with the lower surfaces of the left side and the right side of the upper panel and used for supporting the left side and the right side of the upper panel, and the lower ends of the fine tuning mechanisms are provided with adjusting screws for adjusting the height of the upper panel in the vertical direction; the fine adjustment mechanism is also provided with a beam frame for supporting a double-plate measuring mechanism, and the double-plate measuring mechanism is arranged on the beam frame through a shaft and is positioned in the middle of the beam frame; the double-plate measuring mechanism comprises a left side plate and a right side plate which are connected through a shaft, and a pointer which is used for extending to the lower part of the dial is further arranged on the right side plate, and the double-plate measuring mechanism is characterized in that the dial is designed to be inclined by 45 degrees for convenient observation, the top end of the pointer is provided with a bending part, and the bending part points to scale marks on the dial.

2. The electrode gap adjusting device for insulating oil withstand voltage detection according to claim 1, wherein the scale marks on the scale disc comprise grooves formed in the scale disc, a rare earth fluorescent material layer is coated in the grooves, and the grooves are sealed by a resin protective layer above the rare earth fluorescent material layer.

3. The electrode gap adjusting device for detecting withstand voltage of insulating oil according to claim 1, wherein the bending portion is bent at 45 ° to the pointer body.