CN113176481A - Insulating part testing device and method for detecting insulating part by using same - Google Patents

Abstract

The embodiment of the disclosure provides an insulating part testing device and a method for detecting an insulating part by adopting the same, wherein the insulating part comprises an insulating body and a conductor; the insulating part test device comprises: a table including at least one mounting hole for sealingly mounting the insulator; the insulating cover is hermetically covered on the workbench and corresponds to the position of the mounting hole, and a sealed space is formed by the insulating cover, the workbench and the insulating piece; the high-voltage electrode movably penetrates through the insulating cover and is in sealing connection with the insulating cover; the high-voltage electrode extends into the sealed space so as to be abutted against the insulating part through the conductor when in test. The insulating part test device in the embodiment of the disclosure has the advantages of simple structure, convenience in operation and good adaptability, and can detect one or more groups of insulating parts with different sizes, so that the detection efficiency is greatly improved.

Description

Insulating part testing device and method for detecting insulating part by using same

Technical Field

The disclosure relates to the technical field of electrical performance detection of insulating parts, in particular to an insulating part testing device and a method for detecting the insulating part by adopting the insulating part testing device.

Background

The insulating member is generally used to support and insulate a conductor, and plays a very important role in electrical equipment. In the prior art, when one or more insulating members are subjected to an electrical performance test, the one or more insulating members are usually placed in a larger open box body, and an insulating medium is added for the test. This results in a large amount of insulating medium, and the open container will allow the insulating medium to evaporate and diffuse into the surrounding environment; and when testing a plurality of insulating parts, be difficult to judge the test article that has a problem, efficiency of software testing is low.

Disclosure of Invention

To solve the technical problems in the prior art, the present disclosure provides an insulating part testing apparatus and a method for detecting an insulating part using the same.

The technical scheme adopted by the embodiment of the disclosure is as follows:

in one aspect, an embodiment of the present disclosure provides an insulator testing apparatus, where the insulator includes an insulator body and a conductor; the insulating part test device comprises:

a table including at least one mounting hole for sealingly mounting the insulator;

the insulating cover is hermetically covered on the workbench and corresponds to the position of the mounting hole, and a sealed space is formed by the insulating cover, the workbench and the insulating piece;

the high-voltage electrode movably penetrates through the insulating cover and is in sealing connection with the insulating cover; the high-voltage electrode extends into the sealed space so as to be abutted against the insulating part through the conductor when in test.

In some embodiments, the table comprises a metal plate and a bracket, the metal plate being disposed on the bracket; the metal plate is provided with the mounting hole.

In some embodiments, the metal plate is provided with at least one metal boss electrically connected with the workbench.

In some embodiments, the insulation test apparatus further comprises a distance adjusting unit, wherein the distance adjusting unit comprises a cylinder body, a support frame and a connecting piece; the connecting piece is located on the insulating boot, the cylinder body with high voltage electrode fixed connection, high voltage electrode passes through the connecting piece wears to locate the insulating boot, the support frame is connected the cylinder body with the connecting piece.

In some embodiments, the pitch adjustment unit comprises a pneumatic cylinder adjustment unit or a hydraulic cylinder pitch adjustment unit.

In some embodiments, the insulation test apparatus further includes an insulation plug located outside the sealed space and abutting against the insulation.

In some embodiments, a valve is disposed on the insulation cover for forming a vacuum state in the sealed space.

In some embodiments, the insulating cover comprises an open end provided with a sealing means.

In some embodiments, the insulating cover is configured with a transparent portion.

On the other hand, an embodiment of the present disclosure further provides a method for detecting an insulating member by using the insulating member testing apparatus provided in any of the above embodiments, where the method includes:

fixing the insulating part through a mounting hole on the workbench;

covering an insulating cover corresponding to the insulating piece;

adjusting the position of the high-voltage electrode to abut against the insulating part;

and adjusting test parameters in the insulating cover to obtain the test condition of the insulating part under the test parameters, and judging whether the insulating part is qualified or not according to the test condition.

Compared with the prior art, the beneficial effects of the embodiment of the present disclosure are that: according to the insulating part testing device in the embodiment of the disclosure, a closed space is formed by matching the insulating cover with the working metal table and the insulating part, and a vacuum environment can be quickly formed in the closed space or a corresponding gas medium can be filled into the closed space to detect the insulating part according to the detection requirement; meanwhile, the high-voltage electrode can be movably adjusted relative to the insulating cover, so that the high-voltage electrode can be in good contact with the insulating part, one or more groups of insulating parts with different sizes can be detected, and the detection efficiency is greatly improved.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments generally by way of example and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

FIG. 1 is an exploded view of an insulation tester according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of an insulation test apparatus according to an embodiment of the disclosure;

FIG. 3 is a schematic view of an insulation tester according to an embodiment of the present disclosure in another orientation;

fig. 4 is a cross-sectional view taken along line B-B of fig. 3.

The members denoted by reference numerals in the drawings:

100-a workbench; 110-a metal plate; 111-mounting holes; 112-metal bosses; 120-a scaffold;

200-an insulating cover; 210-a valve;

300-a high voltage electrode; 310-a ball head portion;

400-a pitch adjusting unit; 410-cylinder body; 420-a support frame; 430-a connector;

500-insulating plug;

600-an insulator; 610-an insulating body; 611-an inner cavity; 620-conductor.

Detailed Description

For a better understanding of the technical aspects of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings. Embodiments of the present disclosure are described in further detail below with reference to the figures and the detailed description, but the present disclosure is not limited thereto.

The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.

All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In the present disclosure, the insulator 600 includes an insulator body 610 and a conductor 620. The insulating body 610 is substantially tapered in appearance, and has a through cavity 611 formed therein, and a conductor 620 is inserted into the through cavity 611. To facilitate embedding of the conductor 620, the lumen 611 may be tapered. Of course, the inner cavity 611 of the insulating body 610 may have another shape as needed, and may be inserted into the conductor 620 to form a sealed connection with the conductor 620. The insulating body 610 forms a sealed connection with the conductor 620, so that the conductor 620 in the inner cavity 611 of the insulating body 610 is insulated from other potential difference conductors 620 or ground. Therefore, with the insulating member 600 of the present disclosure, it is necessary to test the airtightness of the connection between the insulating body 610 and the conductor 620 disposed in the inner cavity 611 thereof, and also to test the electrical properties of the insulating member 600, for example, to perform a voltage resistance test or the like, so as to determine whether the insulating member 600 is acceptable.

The embodiment of the present disclosure provides an insulating member 600 testing apparatus, as shown in fig. 1 to 4, the insulating member 600 testing apparatus includes a workbench 100, at least one insulating cover 200 covering the workbench 100, and at least one high voltage electrode 300 penetrating the insulating cover 200. One or more mounting holes 111 may be formed in the table 100 to correspond to the mounting of one or more insulators 600. When the insulation member 600 needs to be inspected, the insulation member 600 may be placed on the worktable 100, and a contact portion of the insulation member 600 and the worktable 100 may be fixedly connected to a peripheral portion of the mounting hole 111. The insulator 600 may be fixed to the surrounding portion of the mounting hole 111 by, for example, a nut, so that the insulator 600 and the table 100 can be hermetically coupled. The present disclosure does not limit the connection manner of the insulating member 600 and the table 100.

One or more insulation covers 200 may be correspondingly disposed corresponding to one or more mounting holes 111 on the worktable 100, and the insulation covers 200 are covered on the worktable 100 at positions corresponding to the mounting holes 111 one by one and are hermetically connected with the worktable 100 to cover the mounted insulation member 600 in the space therein. Thus, the insulating member 600 is hermetically connected to the table 100 through a corresponding portion around the mounting hole 111, the insulating cover 200 is correspondingly disposed around the mounting hole 111, and the insulating member 600 is covered, so that the insulating cover 200 forms a sealed space with the insulating member 600 and the table 100 between the insulating cover 200 and the insulating member 600, and at this time, the inner cavity 611 of the insulating member 600 corresponds to the mounting hole 111 and faces the outside of the sealed space. The sealed space formed here can be adjusted to vacuum or corresponding pressure according to the detection requirement of the insulation member 600, and can also be filled with corresponding gas media to perform corresponding detection on the insulation member 600.

One or more high voltage electrodes 300 may be correspondingly disposed corresponding to one or more insulation covers 200, and the high voltage electrodes 300 are disposed on the insulation cover 200 to extend into the insulation cover 200, and abut against the insulation member 600 through the conductor 620 during the test. The high voltage electrode 300 is hermetically connected with the insulating cover 200 and is movable relative to the insulating cover 200 to adjust the length of the high voltage electrode 300 extending into the insulating cover 200 to form a certain pressure contact with the insulating member 600, thereby ensuring sufficient and good contact. In this way, for the insulators 600 with different sizes, the length of the high-voltage electrode 300 extending into the insulating cover 200 can be adjusted, so that when the insulators 600 with different sizes are detected, the high-voltage electrode can be abutted against the insulators 600, and the high-voltage electrode can be in full and good contact with the insulators 600, so that the detection result is real and reliable.

In the insulating part 600 testing device in the embodiment of the disclosure, a closed space is formed by matching the insulating cover 200 with the working metal table and the insulating part 600, and a vacuum environment can be quickly formed in the closed space or a corresponding gas medium can be filled into the closed space to detect the insulating part 600 according to the detection requirement; meanwhile, the high-voltage electrode 300 can be movably adjusted relative to the insulating cover 200, so that the high-voltage electrode 300 can be in full and good contact with the insulating piece 600, and the detection result is real and reliable; the insulating part 600 test device in the embodiment of the disclosure can detect more than one group of insulating parts 600 with different sizes or simultaneously, and greatly improves the detection efficiency.

In some embodiments, the work table 100 includes a metal plate 110 and a bracket 120, and the metal plate 110 is disposed on the bracket 120. The metal plate 110 is provided with the mounting hole 111, and when the insulator 600 is detected, the insulator 600 is placed on the metal plate 110 corresponding to the mounting hole 111, and the contact part of the insulator 600 and the metal plate 110 is hermetically connected with the corresponding part around the mounting hole 111. Of course, a sealing ring may also be disposed on the insulating member 600 and disposed between the insulating body 610 and the worktable 100, so that the insulating member 600 and the metal plate 110 can be attached more closely, and a sealing installation between the two can be ensured. The one or more brackets 120 may be disposed on the placement surface at one end, and may be fixed to the placement surface at the other end, and are connected to the metal plate 110 to support the metal plate 110. The metal plate 110 and the bracket 120 may be fixedly connected or movably connected. When the metal plate 110 is movably connected with the bracket 120, the distance between the two can be further adjusted according to the size of the insulating member 600, so as to adjust the height of the metal plate 110. The present disclosure does not limit the connection manner between the bracket 120 and the metal plate 110.

In some embodiments, corresponding to one or more mounting holes 111 provided on the metal plate 110, one or more metal bosses 112 are provided on the metal plate 110 corresponding to the surroundings of the mounting holes 111, and one mounting hole 111 may correspond to one or more metal bosses 112, so that the insulator 600 may be fixed to the metal plate 110 by inserting a nut on the insulator 600 into the metal boss 112. One or more metal bosses 112 are electrically connected to the table 100 to achieve equipotential connection of each of the one or more metal bosses 112 to the table 100.

In some embodiments, the insulation member 600 testing apparatus further comprises a distance adjustment unit 400 to adjust the length of the high voltage electrode 300 extending into the insulation cover 200. The distance adjusting unit 400 includes a cylinder 410, a support bracket 420, and a connection member 430. The connecting piece 430 is fixed on the insulating cover 200; the cylinder 410 is fixedly connected with the high voltage electrode 300 to drive the high voltage electrode 300 to move; the supporting frame 420 connects the cylinder 410 and the connecting member 430. In one specific embodiment, the high voltage electrode 300 may be inserted into the insulation cover 200 through the connection member 430. In this way, the cylinder 410 moves under the action of the air pressure or hydraulic pressure to drive the high voltage electrode 300 to move, so as to adjust the length of the high voltage electrode 300 extending into the insulating cover 200 through the connecting member 430, so as to abut against the insulating member 600 during the detection test, so as to be in full contact with the insulating member 600.

In some embodiments, the distance adjusting unit 400 includes a pneumatic cylinder adjusting unit or a hydraulic cylinder distance adjusting unit 400, so as to push the cylinder 410 to move by the change of the gas pressure or the liquid pressure, thereby moving the high voltage electrode 300.

In some embodiments, the insulation 600 test apparatus further includes an insulation plug 500, and the insulation plug 500 is located outside the sealed space and abuts against the insulation 600. The insulating plug 500 can be inserted into the inner cavity 611 of the insulating body 610, and the size and shape of the insulating plug are matched with the shape and shape of the inner cavity 611 of the insulating body 610, i.e., the size and shape of the insulating plug are not limited in this disclosure. In specific implementation, the insulating plug 500 may be pressed into the inner cavity 611 of the insulating body 610 from bottom to top, so as to plug the inner cavity 611 of the insulating body 610, thereby avoiding creepage from the inner cavity 611 of the insulating body 610 in the high voltage resistance detection test.

In some embodiments, a valve 210 is disposed on the insulation cover 200 to allow the sealed space to be in a vacuum state. In some embodiments, the pressure in the sealed space can be changed by the valve 210, such as forming a vacuum environment, or a certain pressure environment, such as a pressure environment of 0-0.3 MPa. Of course, the required insulating medium gas can be filled in the closed space of the valve 210 to form a corresponding detection environment for detection test.

In some embodiments, the insulation cover 200 includes an open end, and the insulation cover 200 is connected to the worktable 100, and the open end is disposed corresponding to the installation hole 111 to cover the installation hole 111 and the surrounding portion of the installation hole 111, so as to cover the insulation member 600 during the test. The open end is provided with a sealing device so that the open end can be connected with the workbench 100 in a sealing way. In some embodiments, the sealing device may include a sealing ring having an elastic force, and when the insulation cover 200 is attached to the work table 100 or the metal plate 110 through the sealing ring, the sealing ring may be deformed to allow the insulation cover 200 to be sealingly connected to the work table 100 or the metal plate 110.

In some embodiments, the insulating cover 200 is configured with a transparent portion to facilitate observation of a test condition generated within the insulating cover 200 by a test operator during a test. In some embodiments, the transparent portion may be made of an insulating material, such as glass or acrylic plastic, and the material of the transparent portion is not limited in this disclosure. In some specific embodiments, the transparent portion may be constituted by the entire insulating cover 200; or the transparent part may be formed by a certain part on the insulating cover 200, and may be disposed on the insulating cover 200 in a direction facing the test operator, and the size of the transparent part may facilitate light to enter the inside of the insulating cover 200, so as to clearly observe the test condition in the insulating cover 200, where the shape of the transparent part is not limited at all, and may be rectangular or triangular, and the like.

The present disclosure also provides a method for testing an insulation member 600 by using the insulation member 600 testing apparatus according to any of the above embodiments, the method including:

fixing the insulating member 600 through the mounting hole 111 of the table 100;

covering the insulating cover 200 corresponding to the insulating member 600;

adjusting the position of the high voltage electrode 300 to abut against the insulator 600;

adjusting test parameters in the insulating cover 200 to obtain test conditions of the insulating part 600 under the test parameters, and judging whether the insulating part 600 is qualified or not according to the test conditions.

In this embodiment, when the insulating member 600 is tested, the insulating member 600 is placed on the worktable 100 corresponding to the mounting hole 111, so that the opening of the mounting hole 111 on the worktable 100 corresponds to the inner cavity 611 of the insulating body 610, and then the portion of the insulating member 600 contacting the worktable 100 and the corresponding portion around the mounting hole 111 are fixed by a nut, so that the insulating member 600 and the worktable 100 can be connected in a sealing manner.

Next, the insulation cover 200 is disposed on the workbench 100 corresponding to the insulation member 600 to cover the insulation member 600, and in order to make the open end of the insulation cover 200 closely fit to the workbench 100, an elastic sealing ring may be disposed at the open end of the insulation cover 200, so that the insulation cover 200, the workbench 100 and the insulation member 600 cooperate to form a closed space.

The insulating cover 200 is movably provided with a high voltage electrode 300, and the high voltage electrode 300 is hermetically connected with the insulating cover 200 and can move relative to the insulating cover 200. The high voltage electrode 300 is driven to move by controlling the distance adjusting unit 400, so that the length of the high voltage electrode 300 extending into the insulating cover 200 can be adjusted, and the ball head part 310 of the high voltage electrode 300 is abutted against the conductor 620 to form a contact with the insulating member 600 with a certain pressure.

Test parameters in the closed space are adjusted to detect the leakage performance or the voltage resistance of the insulating member 600, and the detection condition under the corresponding detection test is obtained to judge whether the insulating member 600 is qualified.

For example, in the leakage performance test, air in the closed space is extracted through the valve 210 disposed on the insulation cover 200, so that the insulation member 600 is in a vacuum state in the closed space. The cavity 611 of the insulating body 610 is filled with a certain amount of helium, and a helium detecting device is connected to the valve 210 to detect whether the insulating member 600 leaks air. If there is a gap between the insulator 610 and the conductor 620 due to poor bonding, helium in the cavity 611 may enter the enclosed space along the gap. Therefore, when the helium detection device connected with the port of the valve 210 is communicated with the closed space, if helium is detected in the closed space, the poor combination between the insulation body 610 and the conductor 620 can be judged, and the insulation piece 600 leaks gas and is an unqualified product; if the helium gas is not detected by the helium gas detecting device, it can be determined that the insulation body 610 and the conductor 620 are well combined, and the air tightness of the insulation member 600 is good, which is a qualified product.

For example, in order to avoid creepage from the inner cavity 611 when high voltage is applied during the withstand voltage test, the insulating plug 500 is pressed into the inner cavity 611 of the insulating body 610, so that the inner cavity 611 is plugged. Next, adjusting the air pressure value in the closed space, in one specific embodiment, extracting the air in the closed space, and then filling the insulating medium gas for testing into the closed space to adjust the air pressure in the closed space to the required air pressure value; the withstand voltage equipment is started to boost the voltage to a specified high voltage value so as to load the specified high voltage on the insulating member 600, and the insulating member 600 is tested for electrical performance. Next, whether or not a discharge phenomenon occurs in the insulating cover 200 is observed. If a discharge phenomenon is observed in the insulating cover 200, it can be determined that the corresponding insulating member 600 is not acceptable in the withstand voltage test. If no discharge phenomenon is observed in the insulating cover 200, the corresponding insulating member 600 is determined to be acceptable under a predetermined high pressure. At this time, the air pressure value of the enclosed space and the high pressure value output by the pressure-resistant device can be continuously adjusted to further perform the pressure-resistant test on the insulating member 600.

Moreover, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments based on the disclosure with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements in the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the specification or during the prosecution of the disclosure, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the foregoing detailed description, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, the subject matter of the present disclosure may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the disclosure should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

The above embodiments are merely exemplary embodiments of the present disclosure, which is not intended to limit the present disclosure, and the scope of the present disclosure is defined by the claims. Various modifications and equivalents of the disclosure may occur to those skilled in the art within the spirit and scope of the disclosure, and such modifications and equivalents are considered to be within the scope of the disclosure.

Claims (10)

1. An insulator testing device, wherein the insulator comprises an insulator body and a conductor; it is characterized in that the insulating part testing device comprises:

a table including at least one mounting hole for sealingly mounting the insulator;

the insulating cover is hermetically covered on the workbench and corresponds to the position of the mounting hole, and a sealed space is formed by the insulating cover, the workbench and the insulating piece;

the high-voltage electrode movably penetrates through the insulating cover and is in sealing connection with the insulating cover; the high-voltage electrode extends into the sealed space so as to be abutted against the insulating part through the conductor when in test.

2. The insulation test apparatus of claim 1, wherein the table comprises a metal plate and a bracket, the metal plate being disposed on the bracket; the metal plate is provided with the mounting hole.

3. An insulation test unit as claimed in claim 2, wherein the metal plate is provided with at least one metal boss electrically connected to the table.

4. The insulation test apparatus of claim 1, further comprising a pitch adjustment unit, the pitch adjustment unit comprising a cylinder, a support frame and a connector; the connecting piece is located on the insulating boot, the cylinder body with high voltage electrode fixed connection, high voltage electrode passes through the connecting piece wears to locate the insulating boot, the support frame is connected the cylinder body with the connecting piece.

5. An insulation testing device according to claim 4, wherein the pitch adjustment unit comprises a pneumatic cylinder adjustment unit or a hydraulic cylinder pitch adjustment unit.

6. An insulation test apparatus as claimed in any of claims 1 to 5, further comprising an insulating plug located outside the sealed space against the insulation.

7. An insulation test apparatus as claimed in any of claims 1 to 5, wherein the insulation cover is provided with a valve for forming a vacuum state in the sealed space.

8. Insulation testing device according to any of the claims 1-5, characterized in that the insulation cover comprises an open end, which open end is provided with a sealing means.

9. Insulation testing device according to any of claims 1-5, characterized in that the insulation cover is configured with a transparent portion.

10. A method of testing insulation using the insulation tester of any of claims 1-9, comprising:

fixing the insulating part through a mounting hole on the workbench;

covering an insulating cover corresponding to the insulating piece;

adjusting the position of the high-voltage electrode to abut against the insulating part;

and adjusting test parameters in the insulating cover to obtain the test condition of the insulating part under the test parameters, and judging whether the insulating part is qualified or not according to the test condition.

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