Intelligent withstand voltage testing device for insulating safety tools

Abstract

The present invention relates to an intelligent withstand voltage test device for insulating safety tools, the device comprising a voltage equalizing ring (1) and a tray (11) arranged above and below, a support base (8) arranged at the bottom of the tray (11) and having an adjustable height, and a background industrial control computer (10); a plurality of sample hangers (5) are evenly distributed at the bottom of the voltage equalizing ring (1); the tray (11) is provided with a hole (6) for a sample (7) to pass through the lower end of the sample (7) at a position corresponding to the sample hanger (5); a current detection sensor is provided on the inner wall of the hole (6); a grounding terminal is provided near the hole (6); the current detection sensor is connected to the background industrial control computer (10); a corresponding relationship is formed between the hole (6) and the current detection sensor inside the hole (6), and the corresponding relationship is pre-stored in the background industrial control computer (10). In the present invention, test personnel can monitor the leakage of each sample on the background industrial control computer, quickly lock unqualified samples, and improve the detection efficiency and detection quality of the test.

Description

Technical Field

[0001] The invention relates to the technical field of voltage withstand detection of electrical equipment, and in particular to an intelligent voltage withstand test device for insulating safety tools. Background Art

[0002] High-voltage equipment and insulating tools must pass inspection and testing before they are allowed to be put into use, and regular inspections are required to detect defects in equipment or insulating tools as early as possible to ensure the safety of people, power grids and equipment.

[0003] Traditional withstand voltage test usually involves first connecting a high voltage generator to the pressurized end of the test piece, and then hoisting the test piece with a crane. This solution has the following shortcomings: there is no dedicated test support frame, only one test piece can be completed at a time, and it is rare to consider completing multiple tests of similar products under the same conditions. The advantage is that the result is unique, but the disadvantage is that the detection efficiency is low. Moreover, the test data is read manually, especially for high-voltage test pieces. People are far away from the pressurized equipment and often need to use a telescope to read the values. On the one hand, the work efficiency is low, and on the other hand, in order to see the data clearly, people involuntarily approach the pressurized equipment, which poses a huge safety hazard.

[0004] In this regard, CN204154833U discloses an ultra-high voltage live working insulation safety tool test system, in which a special suspension device is provided, and the test sample is placed on the suspension device through a set of electrodes, and is also equipped with an infrared intelligent high voltage test protection system and a test data remote acquisition device. Although this solution can test multiple test samples at a time, which improves the test efficiency and test safety to a certain extent, it still has the following disadvantages in practical application:

[0005] 1. The test data remote acquisition device monitors the status of the test product through a high-definition camera and records the required test data. The status and test data can only be obtained after analyzing and judging the monitoring video. On the one hand, the work is still cumbersome and inefficient. On the other hand, remote viewing through video will affect the capture rate and accuracy of key information and affect the quality of test detection.

[0006] 2. Although the pressure equalizing ring in the suspension device is an equipotential point, since each test piece is equipped with a set of electrodes, when batches of test pieces are tested, it is difficult to ensure that the lower electrodes on all test pieces are at the same height, which affects the test quality. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide an intelligent withstand voltage test device for insulating safety tools to improve the test detection efficiency and detection quality.

[0008] In order to solve the above problems, the intelligent withstand voltage test device for insulating safety tools described in the present invention includes a voltage equalizing ring and a tray arranged up and down, a support base arranged at the bottom of the tray and with adjustable height, and a background industrial computer; a plurality of sample hangers are evenly distributed on the bottom of the voltage equalizing ring, and the tray is provided with holes for the lower end of the sample to pass through at positions corresponding to the sample hangers, a current detection sensor is provided on the inner wall of the hole, and a grounding terminal is provided near the hole; the current detection sensor is connected to the background industrial computer; a corresponding relationship is formed between the hole and the current detection sensor inside the hole, and the corresponding relationship is pre-stored in the background industrial computer. When working, the voltage equalizing ring is connected to a high voltage generating device, the tray is grounded, the current detection sensor is used to detect leakage current, and the background industrial computer is used to receive and display detection data from the current detection sensor.

[0009] Preferably, the background industrial computer is also used to: after receiving the detection data from the current detection sensor, determine whether the detection data exceeds a preset threshold value, and if so, issue an off-line alarm and indicate the position of the off-line test product.

[0010] Preferably, an isolating insulator is provided on the top of the grading ring, and a driving hanging point is provided on the top of the isolating insulator.

[0011] Preferably, the device further comprises a ruler arranged beside the tray.

[0012] Preferably, the pressure equalizing ring comprises an annular body, a central disk arranged at the center of the annular body, and connecting members radially distributed therebetween, and the sample hanger is arranged at the bottom of the annular body.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] In the present invention, multiple test samples can be connected at one time, and a current detection sensor is installed under each test sample. The current detection sensor has the function of detecting leakage current, and then transmits the detected leakage current to the background industrial control computer. (1) The test personnel can directly read the detection data of each test sample on the background industrial control computer, monitor the leakage of each test sample, which is efficient and accurate and reduces safety risks; (2) Since the hole and the current detection sensor form a corresponding relationship, if a breakdown discharge or flashover occurs according to the detection judgment, the unqualified test sample can be directly locked according to the corresponding relationship, which is convenient and fast; (3) During the test, the upper voltage equalizing ring is the equipotential point, and the lower tray uniformly adjusts the height of the lower end of the test sample to ensure that the voltage applied to each test sample is consistent, avoiding the discreteness of the manual operation of a single test sample and improving the test detection quality. In addition, the background industrial control computer in the present invention further has the function of over-line alarm and prompting the breakdown or discharge test sample, which is convenient for the test personnel to find abnormalities in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0016] Figure 1 A schematic diagram of the structure provided by an embodiment of the present invention.

[0017] In the figure: 1—voltage equalizing ring, 2—wiring fixing terminal, 3—connecting wire, 4—high voltage generating device, 5—test sample hanger, 6—hole, 7—test sample, 8—support base, 9—grounding, 10—backstage industrial computer, 11—tray. DETAILED DESCRIPTION

[0018] refer to Figure 1 An embodiment of the present invention provides an intelligent withstand voltage test device for insulating safety tools, which mainly includes a voltage equalizing ring 1 and a tray 11 arranged at upper and lower positions, a supporting base 8 arranged at the bottom of the tray 11, and a background industrial control computer 10.

[0019] Several sample hangers 5 are evenly distributed at the bottom of the grading ring 1, and the top of the sample 7 is hung on the sample hanger 5 during the test. The sample hanger 5 can be of different types to accommodate different types of samples 7. The sample 7 in the figure is a composite insulator and an insulating operating rod. The grading ring 1 serves as both a grading cover and a bracket for hanging the sample 7, which has a good grading effect and saves the cost of bracket development.

[0020] The voltage-grading ring 1 may specifically include an annular body, a central disk arranged at the center of the annular body, and connectors radially distributed between the two, and the sample hanger 5 is arranged at the bottom of the annular body. During the test, the voltage-grading ring 1 is connected to the high-voltage generator 4 to form an equipotential point; a wiring fixed terminal 2 is arranged on the outer side of the annular body of the voltage-grading ring 1, and is connected to the high-voltage generator 4 through a connecting line 3. For the case where the test sample withstands a voltage of 110kV or above and the voltage-grading ring 1 needs to be hoisted by a crane (the withstand voltage level of insulating tools (pillars) of 110kV and above is high, the distance to the ground is large, and a suspension method is required for testing), an isolation insulator may be arranged on the central disk of the voltage-grading ring 1, and a crane hanging point is arranged on the top of the isolation insulator. The isolation insulator is used to insulate from the roof, and the withstand voltage level of the insulator is 2000kV, which meets the test requirements of voltage levels of 1000kV and below.

[0021] The tray 11 is an aluminum disc, and a hole 6 is provided at a position corresponding to the sample hanger 5. The inner diameter of the hole 6 is adapted to the outer diameter of the lower end of the sample 7, and the lower end of the sample 7 can pass through. A current detection sensor is provided on the inner wall of the hole 6. The screw coil of the current detection sensor is fixed on the circumference of the inner wall of the hole 6, which is used to detect leakage current. The current detection sensor is connected to the background industrial computer 10; if breakdown discharge or flashover occurs, the current detection sensor will transmit the detected current data to the background industrial computer 10. A grounding terminal is provided near the hole 6, and the lower end of the sample 7 is connected to the grounding terminal, and unified grounding is achieved after being collected by the tray 11.

[0022] It can be seen from this that the tray 11 has three functions: one is to install the current detection sensor, the second is to place the tray 11 horizontally and adjust the support base 8 to ensure that the distance between the tray 11 and the equalizing ring 1 is consistent for all test pieces 7 (because the test pieces 7 of the same voltage level and the same model may have different lengths due to different manufacturers, the holes 6 on the tray 11 make it easy to leave the overgrown part under the tray 11, so that the distance between the tray 11 and the equalizing ring 1 is the same), and the third is to unify the grounding collection point at the lower ends of all test pieces 7.

[0023] The support base 8 is arranged at the bottom of the tray 11, and its height is adjustable, so that the distance between the tray 11 and the pressure equalizing ring 1 is adjustable at the bottom. In practical applications, the support base 8 can be a plurality of support rods evenly distributed at the bottom of the tray 11, and the heights of the plurality of support rods are electrically adjusted synchronously, and of course, the height of a single support rod can also be fine-tuned. In order to determine the rising height of the tray 11, several rulers can be arranged along the circumference beside the tray 11 to measure the height between the tray 11 and the ground to ensure that the tray is in a horizontal position.

[0024] In the present invention, the holes 6 on the tray 11 have different numbers according to their positions, and the current detection sensors also have numbers. The numbers of the holes 6 have a one-to-one correspondence with the numbers of the current detection sensors inside them, and the correspondence is pre-stored in the background industrial computer 10; based on this correspondence, the correspondence between the detection data and the holes 6 can be quickly determined, and the position of the holes 6 and the test sample 7 corresponding to the position can be determined according to the numbers of the holes 6, and finally it can be determined which test sample a certain detection data belongs to. In this way, when an abnormality is found according to the detection data, it can be quickly determined which test sample has the abnormality.

[0025] For example, after the background industrial computer 10 receives the detection data from the current detection sensor, it is displayed in the data frame corresponding to the hole number 6, and the hole number 6 corresponds to the test piece 7 at that position, which is convenient for reading and report generation.

[0026] In the present invention, in order to further improve work efficiency, an off-line threshold can also be set in the background industrial computer 10, so that after receiving the detection data from the current detection sensor, it can determine whether the detection data exceeds the preset threshold. If so, an off-line alarm is issued and the hole number of the off-line is prompted, and the position of the off-line test piece is quickly locked by the hole number.

[0027] The technical solution provided by the present invention is described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An intelligent withstand voltage test device for insulating safety tools, characterized in that: The device comprises a voltage-equalizing ring (1) and a tray (11) arranged above and below, a support base (8) arranged at the bottom of the tray (11) and having an adjustable height, and a background industrial control computer (10); a plurality of sample hangers (5) are evenly distributed at the bottom of the voltage-equalizing ring (1); a hole (6) for the lower end of the sample (7) to pass through is provided on the tray (11) at a position corresponding to the sample hanger (5); a current detection sensor is provided on the inner wall of the hole (6), and a grounding terminal is provided near the hole (6); the current detection sensor is connected to the background industrial control computer (10); a corresponding relationship is formed between the hole (6) and the current detection sensor inside the hole (6), and the corresponding relationship is pre-stored in the background industrial control computer (10); when working, the voltage-equalizing ring (1) is connected to a high voltage generating device (4), the tray (11) is grounded, the current detection sensor is used to detect leakage current, and the background industrial control computer (10) is used to receive and display detection data from the current detection sensor; The background industrial computer (10) is also used to: after receiving the detection data from the current detection sensor, determine whether the detection data exceeds a preset threshold value, and if so, issue an off-line alarm and indicate the position of the off-line test product; The pressure equalizing ring (1) comprises an annular body, a central disk arranged at the center of the annular body, and connecting pieces radially distributed between the two, and the sample hanger (5) is arranged at the bottom of the annular body.

2. The device according to claim 1, characterized in that An isolating insulator is provided on the top of the grading ring (1), and a crane hanging point is provided on the top of the isolating insulator.

3. The device according to claim 1, characterized in that The device also includes a ruler arranged beside the tray (11).

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