CN117054831A - Multifunctional platform for testing electrical performance of insulating material - Google Patents
Multifunctional platform for testing electrical performance of insulating material Download PDFInfo
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- CN117054831A CN117054831A CN202311018129.0A CN202311018129A CN117054831A CN 117054831 A CN117054831 A CN 117054831A CN 202311018129 A CN202311018129 A CN 202311018129A CN 117054831 A CN117054831 A CN 117054831A
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- 238000012360 testing method Methods 0.000 title claims abstract description 96
- 239000011810 insulating material Substances 0.000 title claims abstract description 32
- 238000009413 insulation Methods 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 14
- 230000010354 integration Effects 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 239000004677 Nylon Substances 0.000 description 6
- 229920001778 nylon Polymers 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 239000012212 insulator Substances 0.000 description 5
- 239000005341 toughened glass Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/04—Voltage dividers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/16—Construction of testing vessels; Electrodes therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The application discloses a multifunctional platform for testing the electrical performance of an insulating material, which relates to the technical field of electrical testing and comprises a main body structure, a low-voltage component, a high-voltage component and a resistor voltage divider; a test cavity is arranged in the main body structure; the low-voltage assembly comprises a telescopic adjusting mechanism and a low-voltage pole piece; the telescopic adjusting mechanism is arranged on the top wall of the test cavity along the vertical direction in a manner of adjusting the telescopic length, and the telescopic end is detachably connected with the low-voltage pole piece; the high-voltage assembly comprises an insulating supporting mechanism, an access cable and a high-voltage pole piece; the insulation supporting mechanism is arranged in the test cavity; the high-voltage pole piece is detachably arranged on the insulation supporting mechanism and is positioned below the low-voltage pole piece; one end of the access cable is connected with the high-voltage pole piece, and the other end of the access cable extends out of the main body structure; the resistor divider is arranged in the test cavity, and the low-voltage arm resistor of the resistor divider is provided with an output end. The platform under the design can flexibly change experimental conditions according to the needs, has good adaptability and high integration level, and improves the motorization capability.
Description
Technical Field
The application relates to the technical field of electrical testing, in particular to a multifunctional platform for testing the electrical performance of an insulating material.
Background
With the rapid development of ultra-high voltage and ultra-high voltage technology in China, the requirements for insulation in power systems and power equipment are increased year by year, and insulation becomes a problem to be solved urgently in power development. The insulating material is widely used for designing and manufacturing various insulators, insulating supports of various large-scale electric power equipment, mechanical connection, insulating package of power transmission pipelines and the like. At the same time of domestic high-voltage power transmission and rapid development of electric equipment, the research of insulating materials is also increasingly intensive.
The failure of insulating materials has been a major cause of damage to electrical equipment, and the accumulation of surge voltages has been one of the common causes of failure of insulating materials. The test of the electrical performance of the insulating material is one of main ways for researching the performance of the insulating material, the electrical performance research of the insulator comprises an insulator surface flashover test, a breakdown test and the like under direct current, alternating current and high impact pressure, and the better the insulating performance of the insulator is, the higher the surface flashover voltage and the breakdown voltage are shown under the same experimental conditions. According to the practical application environment, different types of voltages with different grades are utilized to simulate corresponding insulating gas environments for testing.
At present, many insulation test platform designs can only realize experiments under fixed conditions, have poor applicability and relatively weak equipment motorized capability, and further improvement is still needed on the basis.
Disclosure of Invention
In view of the above, the application aims to provide a multifunctional platform for testing the electrical performance of an insulating material, so as to solve the technical problems of fixed experimental conditions, poor applicability and relatively weak motorized capability of the existing testing platform.
In order to achieve the technical aim, the application provides a multifunctional platform for testing the electrical performance of an insulating material, which comprises a main body structure, a low-voltage component, a high-voltage component and a resistor voltage divider;
a test cavity is arranged in the main body structure;
the low-voltage assembly comprises a telescopic adjusting mechanism and a low-voltage pole piece;
the telescopic adjusting mechanism is arranged on the top wall of the test cavity along the vertical direction in a manner of adjusting the telescopic length, and the telescopic end is detachably connected with the low-voltage pole piece;
the high-voltage assembly comprises an insulating supporting mechanism, an access cable and a high-voltage pole piece;
the insulation supporting mechanism is arranged in the test cavity;
the high-voltage pole piece is detachably arranged on the insulation supporting mechanism and is positioned below the low-voltage pole piece;
one end of the access cable is connected with the high-voltage pole piece, and the other end of the access cable extends out of the main body structure;
the resistor divider is arranged in the test cavity, and the low-voltage arm resistor of the resistor divider is provided with an output end extending out of the main body structure.
Further, the main body structure comprises a housing and a cover plate;
a cavity is arranged in the shell;
an opening is formed in the top of the shell;
the cover plate is detachably arranged at the top of the shell so as to block the opening and form the test cavity with the cavity;
the telescopic adjusting mechanism is arranged on the inner side surface of the cover plate.
Further, the telescopic adjusting mechanism comprises a sleeve, a sliding column and a locking piece;
the sleeve is fixed on the top wall of the test cavity along the vertical direction;
the spool is slidably inserted into the sleeve;
the locking piece is arranged on the sleeve and used for locking the sliding column;
the low-voltage pole piece is detachably connected with one end of the sliding column, which extends downwards out of the sleeve.
Further, the locking piece is a first threaded fastener;
a locking threaded hole is formed in the peripheral wall of the sleeve;
the locking piece is arranged on the locking threaded hole, and one end of the locking piece can movably extend into the sleeve and contact and prop against the sliding column so as to lock the sliding column.
Further, the telescopic adjusting mechanism further comprises an elastic piece;
the elastic piece is arranged in the sleeve, one end of the elastic piece is contacted and abutted with the top wall of the test cavity, and the other end of the elastic piece is contacted and abutted with the sliding column;
the low-voltage pole piece is detachably connected with the sliding column through a second threaded fastener.
Further, the insulation supporting mechanism comprises a supporting plate and a plurality of insulation columns;
one end of the insulating column is detachably connected with the top wall of the test cavity, and the other end of the insulating column is detachably connected with the supporting plate;
the high-voltage pole piece is detachably arranged on the supporting plate;
one end of the access cable is connected with the supporting plate.
Further, the top wall of the test cavity is provided with a connecting threaded hole;
one end of the insulating column is provided with a first threaded connector in threaded fit with the connecting threaded hole;
the other end of the insulating column is provided with a second threaded connector which movably penetrates through the supporting plate;
a fastening nut is sleeved on the second threaded connector;
the clamping nut and the other end of the insulating column form clamping on the supporting plate;
the high-voltage pole piece is detachably connected with the supporting plate through a third threaded fastener;
the high-voltage pole piece is of an inductance structure.
Further, a plurality of observation holes are formed in the outer peripheral surface of the shell;
each observation hole is provided with an observation window;
the outer peripheral surface of the shell is also provided with a sample exchange hole;
the sample exchanging hole is provided with a sample exchanging window which can be opened and closed;
an annular boss is arranged on the sample exchange hole;
the sample changing window is rotationally connected with the annular boss through a hinge shaft and can be attached to the annular boss.
Further, a cavity air pressure detection hole is formed in the outer peripheral surface of the shell;
the outer peripheral surface of the shell is also provided with a functional hole;
and the functional hole is provided with a functional window.
Further, the resistor divider comprises the low-voltage arm resistor, the high-voltage arm resistor, a low-voltage end equalizing ring and a high-voltage end equalizing ring;
the low-voltage arm resistor and the high-voltage arm resistor are sequentially connected from top to bottom;
the low-voltage end equalizing ring is arranged on the low-voltage arm resistor;
the high-voltage end equalizing ring is arranged on the high-voltage arm resistor;
the low-voltage arm resistor is connected with the top wall of the testing cavity and is provided with an output end extending out of the main body structure.
According to the technical scheme, the multifunctional platform for testing the electrical performance of the insulating material, which is designed by the application, can realize the adjustment of the distance between the low-voltage pole clamping piece and the high-voltage pole clamping piece through the design of the telescopic adjusting mechanism, and is convenient for clamping and testing different samples. Realize supporting fixedly high-voltage pole holder through insulating supporting mechanism, can guarantee good insulation, guarantee test effect. Moreover, the low-voltage pole clamping piece and the high-voltage pole clamping piece are detachably connected, so that the electrode clamping pieces of different types can be replaced according to different samples and different test requirements, for example, a connecting column suitable for a high-voltage switch is replaced, and a breakdown test of the high-voltage switch is carried out by a matching structure, so that the multipurpose of a platform is realized. In addition, through setting up the resistance divider in order to realize measuring, the signal conversion setting of measuring the link is accomplished in the test chamber, has promoted the integrated level, has simplified outside wiring and has made the external output measuring link be low pressure, promotes the experimental security of this device. The platform under the design can flexibly change experimental conditions according to the needs, has good adaptability and high integration level, and improves the motorized capability of the platform.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a front view of a multifunctional platform for testing electrical properties of insulating materials provided in the present application;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a side view of a multi-functional platform for testing electrical properties of insulating materials provided in the present application;
FIG. 4 is a top view of a multi-functional platform for testing electrical properties of insulating materials provided in the present application;
FIG. 5 is a cross-sectional view of a multi-functional platform with resistive divider for testing electrical properties of insulating materials provided in the present application;
in the figure: 11. a housing; 111. an observation hole; 112. a functional hole; 113. a sample exchange hole; 12. a cover plate; 121. a connecting threaded hole; 21. accessing a cable; 22. a voltage leading-in end is provided with an opening; 31. an observation window; 311. fixing the metal plate; 312. tempered glass plate; 32. a sample changing window; 321. a first fixing hole; 33. a functional window; 34. a hinge shaft; 35. an annular boss; 36. a cavity air pressure detection hole; 41. a sleeve; 411. locking the threaded hole; 42. a spool; 43. an elastic member; 44. a low voltage pole piece; 51. an insulating column; 52. a fastening nut; 53. a support plate; 54. a high voltage pole piece; 6. a resistor divider; 61. a low voltage arm resistor; 62. a high voltage arm resistor; 63. a low pressure end equalizing ring; 64. a high-pressure end equalizing ring; 65. and an output terminal.
Detailed Description
The following description of the embodiments of the present application will be made in detail, but not necessarily all embodiments, with reference to the accompanying drawings. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the embodiments of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, interchangeably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in embodiments of the present application will be understood in detail by those of ordinary skill in the art.
The embodiment of the application discloses a multifunctional platform for testing the electrical performance of an insulating material.
Referring to fig. 1, 2 and 5, an embodiment of a multifunctional platform for testing electrical properties of an insulating material according to an embodiment of the present application includes:
a main body structure, a low voltage component, a high voltage component and a resistor divider 6.
A testing cavity is arranged in the main body structure.
The low voltage assembly includes a telescoping adjustment mechanism and a low voltage pole piece 44; the telescopic adjusting mechanism is arranged on the top wall of the test cavity along the vertical direction in a manner of adjusting the telescopic length, and the telescopic end is detachably connected with the low-voltage pole piece 44; through the design of flexible adjustment mechanism, can realize the regulation of the distance between low-voltage pole piece 44 and the high-voltage pole piece 54, be convenient for carry out the centre gripping test of different samples, satisfy the insulator sample spare along the face flashover experimental condition of different length.
The high voltage assembly comprises an insulating support mechanism, an access cable 21 and a high voltage pole piece 54; the insulation supporting mechanism is arranged in the test cavity; the high-voltage pole piece 54 is detachably mounted on the insulating supporting mechanism and is positioned below the low-voltage pole piece 44; one end of the access cable 21 is connected to the high voltage pole piece 54 and the other end extends out of the body structure. The access cable 21 is a high-voltage cable, and has high insulation test voltage, generally hundreds of kV and above, high requirements on the cable, and particularly different cable thicknesses meeting different voltage forms and amplitudes can be met, so as to ensure that the air tightness of the introduced part of the access cable 21 meets the requirements, the diameter of the voltage introducing end opening 22 on the main structure is matched with the diameter of the peeled access cable, sealing is completed by utilizing a nylon gasket and a metal thread reinforcing structure, and the rubber-covered wire is well connected with the shell 11 and grounded. In addition, the high-voltage pole piece 54 is supported and fixed through the insulation supporting mechanism, good insulation can be ensured, and the testing effect is ensured.
The low-voltage pole piece 44 and the high-voltage pole piece 54 are detachably connected, so that the electrode clamping pieces of different types can be replaced according to different samples and different testing requirements, for example, a connecting column suitable for a high-voltage switch is replaced, and a breakdown test of the high-voltage switch is performed by a matching structure, so that the multi-purpose platform is realized.
The resistor divider 6 is mounted in the test chamber and its low voltage arm resistor 61 is provided with an output 65 extending out of the body structure. Through setting up the resistance divider 6 in order to realize measuring, the signal conversion setting of measuring the link is accomplished in the test chamber, has promoted the integrated level, has simplified outside wiring and has made the outside output measuring the link be low pressure, promotes the experimental security of this device.
The platform under the design can flexibly change experimental conditions according to the needs, has good adaptability and high integration level, and improves the motorized capability of the platform.
The foregoing is an embodiment one of a multifunctional platform for testing electrical performance of an insulating material provided by the embodiment of the present application, and the following is an embodiment two of a multifunctional platform for testing electrical performance of an insulating material provided by the embodiment of the present application, and refer to fig. 1 to 5 specifically.
Based on the scheme of the first embodiment:
further, as shown in fig. 2 and 4, the main body structure includes a housing 11 and a cover plate 12.
A cavity is arranged in the shell 11; the top of the shell 11 is provided with an opening; the cover plate 12 is detachably arranged at the top of the shell 11 to block the opening and form a test cavity with the cavity; the telescopic adjusting mechanism is mounted on the inner side surface of the cover plate 12.
Further, as shown in fig. 2, for the telescopic adjustment mechanism design, a sleeve 41, a spool 42 and a locking member (not shown) are included.
The sleeve 41 is fixed on the top wall of the test chamber in the vertical direction, and the slide post 42 is slidably inserted into the sleeve 41, and the locking member is mounted on the sleeve 41 for locking the slide post 42. By sliding fit between the sleeves 41 of the slide column 42, the telescopic operation can be realized, and the locking can be performed by the locking piece after a certain telescopic distance is adjusted. The structure of the design has larger adjustment margin, and can be used for testing and researching insulation breakdown and flashover under larger voltage range, different voltage forms, different gas conditions and different specifications of the same piece.
The low voltage pole piece 44 is detachably connected to the end of the spool 42 extending downwardly out of the sleeve 41.
Further, the locking member is a first threaded fastener, such as a screw, bolt, or the like.
The peripheral wall of the sleeve 41 is provided with a locking threaded hole 411; the locking member is mounted in the locking threaded hole 411, and one end is movably inserted into the sleeve 41 and contacts and abuts the spool 42 to lock the spool 42. When the sliding column 42 and the sleeve 41 are in coaxial sliding fit and telescopic adjustment is needed, the locking piece is screwed so that the locking piece is not in contact with and offset with the sliding column 42, the sliding column 42 can slide freely, and after the telescopic adjustment with a certain length is completed, the locking piece is screwed to fix the sliding column 42.
Further, as shown in fig. 2, the telescopic adjustment mechanism further includes an elastic member 43; the elastic member 43 is disposed in the sleeve 41, with one end contacting and abutting against the top wall of the test chamber and the other end contacting and abutting against the sliding column 42. The elastic member 43 may be a spring, and the elastic member 43 may be designed to provide an elastic force, so that the low-voltage pole piece 44 and the high-voltage pole piece 54 can be tightly attached to the sample, so that the clamping stability is better.
The low voltage pole piece 44 is removably connected to the spool 42 by a second threaded fastener. The second threaded fastener may be a double-ended screw, a double-ended bolt, etc., and it is understood that the sliding column 42 and the low-voltage pole piece 44 are provided with threaded holes, and the connection is realized by the second threaded fastener with a double-ended screw structure.
Further, as shown in fig. 2, for the insulating support mechanism design, a support plate 53 and a plurality of insulating columns 51 are included.
One end of the insulating column 51 is detachably connected with the top wall of the test chamber, and the other end is detachably connected with the supporting plate 53. The insulating columns 51 are nylon columns, preferably a plurality of the insulating columns, and are circumferentially uniformly distributed, specifically around the circumference of the telescopic adjusting mechanism. In order to ensure a good insulation effect, the length of the insulation column 51 may be variously designed according to actual needs.
The high-voltage pole piece 54 is detachably mounted on the supporting plate 53, one end of the access cable 21 is connected with the supporting plate 53, specifically, the core wire of the access cable 21 is connected with the cable access hole on the supporting plate 53 through an electric wire, and is further electrically connected with the high-voltage pole piece 54 through the supporting plate 53.
Further, a connection threaded hole 121 is formed in the top wall of the test cavity, and a first threaded connector in threaded fit with the connection threaded hole 121 is arranged at one end of the insulating column 51. The detachable connection is achieved by the cooperation between the first threaded connector and the connection threaded hole 121.
The other end of the insulating column 51 is provided with a second threaded connector which movably penetrates through the supporting plate 53; the second threaded connector is sleeved with a fastening nut 52; the fastening nut 52 and the other end of the insulating column 51 form clamping to the supporting plate 53; the detachable connection between the insulating column 51 and the supporting plate 53 is realized through the fastening nut 52, and the detachable connection mode is simple and convenient to use.
The high-voltage pole piece 54 is detachably connected with the supporting plate 53 through a third threaded fastener; the third threaded fastener may also be a double-ended screw, or a conventional screw or a screw, and is threaded with the high-voltage pole piece 54 after passing through the support plate 53, so as to realize the detachable arrangement of the high-voltage pole piece 54 on the support plate 53.
In the application, the low-voltage pole piece 44 and the high-voltage pole piece 54 can be customized according to the dimension specification of the sample piece or can be replaced according to the test type.
For example, the high-voltage pole piece 54 can be an inductance structure, namely a winding inductance structure, and under the design, the adjustment of the rising time of the input end pulse is realized by using the inductances with different sizes so as to meet the experimental requirements under the condition of different rising time of the pulse, and further widen the application of the test platform.
The shape of the low-voltage pole piece 44 or the high-voltage pole piece 54 can be a cylindrical electrode, based on which the diameter of the low-voltage pole piece 44 or the high-voltage pole piece 54 is preferably larger than the diameter of the sample piece when the flashover experiment is carried out; the sample diameter is greater than the diameter of either low voltage pole piece 44 or high voltage pole piece 54 and leaves a large margin for breakdown testing to prevent premature flashover without breakdown.
Further, as shown in fig. 3 to 5, a plurality of observation holes 111 are formed in the outer peripheral surface of the housing 11, and the observation windows 31 are mounted on the respective observation holes 111, and the observation holes 111 may be specifically three and uniformly distributed circumferentially, so as to facilitate observation during test, repair of a platform during failure, and the like. The observation window 31 has an existing structure, and may specifically include a fixed metal plate 311 and a tempered glass plate 312, which are not described in detail.
The outer peripheral surface of the housing 11 is further provided with a sampling hole 113, and the sampling hole 113 is provided with a sampling window 32 which can be opened and closed.
In order to facilitate the installation of the sample exchange window 32, the sample exchange hole 113 is provided with an annular boss 35; the sample changing window 32 is rotatably connected with the annular boss 35 through the hinge shaft 34 and can be attached to the annular boss 35. The sample changing window 32 is also provided with a first fixing hole 321; the annular boss 35 is further provided with a second fixing hole matched with the first fixing hole 321, and the first fixing hole 321 and the second fixing hole can be connected through bolts and nuts. In order to further strengthen the connection, the sample exchange window 32 is further provided with a circle of screw holes, and the annular boss 35 is correspondingly provided with a pair of corresponding matching holes, so that the connection between the sample exchange window 32 and the annular boss 35 can be strengthened through screws. The sample changing window 32 is rotatably arranged through the hinge shaft 34, is convenient to open and close, and is easy to replace internal structural members and sample changing.
Further, the outer peripheral surface of the housing 11 is further provided with a cavity air pressure detecting hole 36 for detecting air pressure in the testing cavity.
The outer peripheral surface of the shell 11 is also provided with a functional hole 112, the functional hole 112 is provided with a functional window 33, the functional window 33 can also be fixed on the shell 11 through screws and the like, namely, the shell 11 is also provided with corresponding screw holes, and the corresponding screw holes are correspondingly provided with matching holes, so that the connection and the fixation are realized; the air passage or measuring hole can be formed in the functional window 33 plate according to requirements, and the air passage is formed by taking the example of the air passage, two air valves are matched and installed on the formed air passage, one of the air valves is connected with the air pressure gauge, and the other air valve can be connected with the vacuum pump for extracting air in the cavity. In addition, for the gas path opening, two groups of gas paths, namely four gas paths in total, can realize the inlet and outlet of electronegative gas, and can be used as the inlet and outlet holes of the switch when expanding into a test platform of a high-voltage switch.
Further, as shown in fig. 5, the resistor divider 6 includes a low voltage arm resistor 61, a high voltage arm resistor 62, a low voltage end equalizing ring 63, and a high voltage end equalizing ring 64; the low-voltage arm resistor 61 and the high-voltage arm resistor 62 are sequentially connected from top to bottom; the low-voltage end equalizing ring 63 is arranged on the low-voltage arm resistor 61; the high-voltage end equalizing ring 64 is arranged on the high-voltage arm resistor 62; the low voltage arm resistor 61 is connected to the top wall of the test chamber and has an output 65 extending from the body structure. The resistor divider 6 is used as an integrated voltage/current measuring device, the high voltage end of the high voltage arm resistor 62 is subjected to voltage equalizing by using a high voltage end equalizing ring 64 to reduce the electric field intensity at the position, correspondingly, the low voltage end of the low voltage arm resistor 61 is also subjected to voltage equalizing by using a low voltage end equalizing ring 63 to reduce the electric field intensity, the low voltage arm resistor 61 is led out of an output end 65 through the cover plate 12, the output end 65 is a BNC interface, and only a coaxial measuring cable with a certain length is needed to be led out to an oscilloscope and other equipment during measurement.
The design enables the input waveform to be adjustable by designing the low-voltage pole piece 44 and the high-voltage pole piece 54 in the test cavity to be replaceable, and can carry out experiments facing different experimental objects such as insulating sample pieces, switches and the like; the signal conversion of the measurement link is completed in the test cavity through the resistor divider 6, so that the integration level is improved, the external wiring is simplified, and the safety is also improved.
The platform of the design of the application is installed and used as follows:
1. the elastic member 43 is put into the sleeve 41 and the spool 42 is inserted into the sleeve 41, taking care that the end of the spool 42 provided with the threaded hole for the second threaded fastener is directed outwards.
2. The low-voltage pole piece 44 and the spool 42 are screwed with a headless threaded screw as a second threaded fastener while placing a locking piece in a locking threaded hole 411 on the sleeve 41 to fix the relative position between the spool 42 and the sleeve 41.
3. The insulating columns 51 are screwed into the connecting threaded holes 121, so that the insulating columns 51 facing the sample changing window 32 and the observation window 31 are convenient to observe in the test, the supporting plates 53 are mounted, and the low-voltage pole pieces 44 and the high-voltage pole pieces 54 are fixed one by fastening nuts 52 made of nylon materials and guaranteed to be parallel.
4. The high-voltage pole piece 54 is connected to the support plate 53 via a headless screw as a third threaded fastener, at which point the installation of the main body portion in the test chamber is completed.
5. The access cable 21 is stripped and the rubber-insulated wire of suitable length is cut off, a sealing gasket and a special nut are placed in the voltage introducing end opening 22, the stripped cable is placed in the cable, and the nut is screwed down to ensure the air tightness of the part.
6. The resistor divider 6 is assembled, the resistor divider 6 is fixedly connected in the placing test cavity, one specific end is arranged at the position of the measuring hole on the corresponding functional window 33, the other end is fixed through the connecting threaded hole 121 on the cover plate 12 and is led out of the output end 65, two positions where the resistor divider 6 can be additionally arranged and the position of the measuring leading-out end can be reserved in the test cavity, and the installation of the two resistor dividers 6 is realized, so that one resistor divider 6 can be used for voltage measurement, and the other resistor divider 6 can be used for current measurement.
7. The toughened glass plate 312 of the observation window 31 and the fixed metal plate 311 are additionally arranged on the shell 11, proper air tightness maintenance measures are adopted, the structure is tightened by a circle of threaded screws, and the thickness of the toughened glass plate 312 can be customized according to the actual situation, namely the maximum air pressure value of the test cavity, and the thickness of the toughened glass plate is 10 mm.
8. The functional window 33 is fixed on the housing 11, and air channels or measuring holes can be formed in the functional window 33 according to requirements.
9. The sample changing window 32 is arranged on the annular boss 35, the hinge shaft 34 sequentially passes through the structure of mutual matching between the sample changing window 32 and the annular boss 35, then the threaded end of the hinge shaft 34 is fixed by a nut, so that the sample changing window 32 can be rotationally connected with the annular boss 35 around the hinge shaft 34, then the corresponding nylon ring is placed into the nylon ring opening on the back surface of the annular boss 35/the sample changing window 32, the sample changing window 32 is closed, and the sample changing window 32 is compacted and then fixed.
10. The main structure of the installation is connected with the shell 11, the cover plate 12 and the shell 11 are connected, the nylon pad is placed, so that good tightness between the cover plate 12 and the shell 11 is ensured, the inside of the test cavity is tested after the installation is finished, the air tightness is good, the subsequent experiment can be carried out, and if the internal air pressure is high, screw holes around the hinge are fastened by threading screws in advance.
For the insulating properties of the insulating sample, the following surface flashover properties are often described. In order to enable the test platform to meet the use scenes of more insulating sample pieces, the distance between the low-voltage electrode piece 44 and the high-voltage electrode piece 54 is adjustable by adopting the telescopic adjusting mechanism, the supporting plate 53 and the high-voltage electrode piece 54 are detachably designed, the structures of the high-voltage electrode pieces 54 with different lengths are convenient to replace, the adjusting range is further widened, and the surface flashover experimental conditions of the insulating sample pieces with different lengths can be met.
In addition, the low-voltage pole piece 44 and the high-voltage pole piece 54 are detachably connected through threads, and can be replaced by a threaded piece matched with a high-voltage switch, so that the high-voltage switch can be used for breakdown characteristic experiments of the high-voltage switch.
Through changing the high-voltage pole piece 54 into the inductance structure, the pulse rise time of the input high-voltage pulse can be adjusted, the design of the wave-regulating inductance is basic knowledge of the power industry, the wave-regulating inductance is not complicated, and the details are omitted, and only the mechanical connection and the corresponding electrical communication between the two ends of the inductance structure and the supporting plate and the low-voltage pole piece are noted in the design.
The signal attenuation of the measurement link is completed in the test cavity by using the resistor divider 6, and the measurement is performed by only using a measurement cable for correct connection, so that the method is convenient and fast.
The foregoing describes a multifunctional platform for testing electrical properties of insulating materials according to the present application, and those skilled in the art will recognize that the present application is not limited to the above description, but can be modified in terms of specific embodiments and application ranges according to the concepts of the embodiments of the present application.
Claims (10)
1. The multifunctional platform for testing the electrical performance of the insulating material is characterized by comprising a main body structure, a low-voltage component, a high-voltage component and a resistor divider (6);
a test cavity is arranged in the main body structure;
the low voltage assembly includes a telescoping adjustment mechanism and a low voltage pole piece (44);
the telescopic adjusting mechanism is arranged on the top wall of the test cavity along the vertical direction in a manner of adjusting the telescopic length, and the telescopic end is detachably connected with the low-voltage pole piece (44);
the high-voltage assembly comprises an insulating supporting mechanism, an access cable (21) and a high-voltage pole piece (54);
the insulation supporting mechanism is arranged in the test cavity;
the high-voltage pole piece (54) is detachably arranged on the insulating supporting mechanism and is positioned below the low-voltage pole piece (44);
one end of the access cable (21) is connected with the high-voltage pole piece (54), and the other end extends out of the main body structure;
the resistor divider (6) is arranged in the test cavity, and the low-voltage arm resistor (61) of the resistor divider is provided with an output end (65) extending out of the main body structure.
2. The multifunctional platform for testing the electrical properties of insulating materials according to claim 1, characterized in that the main structure comprises a housing (11) and a cover plate (12);
a cavity is arranged in the shell (11);
an opening is formed in the top of the shell (11);
the cover plate (12) is detachably arranged at the top of the shell (11) so as to block the opening and form the test cavity with the cavity;
the telescopic adjusting mechanism is arranged on the inner side surface of the cover plate (12).
3. The multifunctional platform for testing the electrical properties of insulating materials according to claim 1, characterized in that the telescopic adjustment mechanism comprises a sleeve (41), a sliding column (42) and a locking member;
the sleeve (41) is fixed on the top wall of the test cavity along the vertical direction;
-said spool (42) is slidingly inserted in said sleeve (41);
the locking piece is arranged on the sleeve (41) and used for locking the sliding column (42);
the low-voltage pole piece (44) is detachably connected with one end of the sliding column (42) extending downwards out of the sleeve (41).
4. A multifunctional platform for testing electrical properties of insulating materials according to claim 3, characterized in that the locking element is a first threaded fastener;
a locking threaded hole (411) is formed in the peripheral wall of the sleeve (41);
the locking piece is arranged on the locking threaded hole (411), and one end of the locking piece can movably extend into the sleeve (41) and contact and prop against the sliding column (42) so as to lock the sliding column (42).
5. A multifunctional platform for testing the electrical properties of insulating materials according to claim 3, characterized in that said telescopic adjustment mechanism further comprises an elastic element (43);
the elastic piece (43) is arranged in the sleeve (41), one end of the elastic piece is contacted and abutted with the top wall of the test cavity, and the other end of the elastic piece is contacted and abutted with the sliding column (42);
the low voltage pole piece (44) is detachably connected with the slide post (42) through a second threaded fastener.
6. The multifunctional platform for testing the electrical properties of insulating materials according to claim 1, characterized in that the insulating support mechanism comprises a support plate (53) and a number of insulating columns (51);
one end of the insulating column (51) is detachably connected with the top wall of the test cavity, and the other end of the insulating column is detachably connected with the supporting plate (53);
the high-voltage pole piece (54) is detachably arranged on the supporting plate (53);
one end of the access cable (21) is connected with the supporting plate (53).
7. The multifunctional platform for testing the electrical properties of insulating materials according to claim 6, characterized in that the top wall of the testing cavity is provided with a threaded connection hole (121);
one end of the insulating column (51) is provided with a first threaded connector in threaded fit with the connecting threaded hole (121);
the other end of the insulating column (51) is provided with a second threaded connector which movably penetrates through the supporting plate (53);
a fastening nut (52) is sleeved on the second threaded connector;
the fastening nut (52) and the other end of the insulating column (51) form clamping on the supporting plate (53);
the high-voltage pole piece (54) is detachably connected with the supporting plate (53) through a third threaded fastener;
the high voltage pole piece (54) is of an inductive structure.
8. The multifunctional platform for testing the electrical properties of insulating materials according to claim 2, characterized in that a plurality of observation holes (111) are provided on the outer peripheral surface of the housing (11);
an observation window (31) is arranged on each observation hole (111);
the outer peripheral surface of the shell (11) is also provided with a sample exchange hole (113);
a sample changing window (32) which can be opened and closed is arranged on the sample changing hole (113);
an annular boss (35) is arranged on the sample exchange hole (113);
the sample changing window (32) is rotationally connected with the annular boss (35) through a hinge shaft (34), and can be attached to the annular boss (35).
9. The multifunctional platform for testing the electrical properties of insulating materials according to claim 2, characterized in that a cavity air pressure detection hole (36) is further formed in the outer peripheral surface of the housing (11);
the outer peripheral surface of the shell (11) is also provided with a functional hole (112);
a functional window (33) is arranged on the functional hole (112).
10. The multifunctional platform for testing the electrical properties of insulating materials according to claim 1, characterized in that the resistor divider (6) comprises the low voltage arm resistor (61), a high voltage arm resistor (62), a low voltage end equalizing ring (63) and a high voltage end equalizing ring (64);
the low-voltage arm resistor (61) and the high-voltage arm resistor (62) are sequentially connected from top to bottom;
the low-voltage end equalizing ring (63) is arranged on the low-voltage arm resistor (61);
the high-voltage end equalizing ring (64) is arranged on the high-voltage arm resistor (62);
the low-voltage arm resistor (61) is connected with the top wall of the testing cavity and is provided with the output end (65) extending out of the main body structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311018129.0A CN117054831A (en) | 2023-08-14 | 2023-08-14 | Multifunctional platform for testing electrical performance of insulating material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311018129.0A CN117054831A (en) | 2023-08-14 | 2023-08-14 | Multifunctional platform for testing electrical performance of insulating material |
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| Publication Number | Publication Date |
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| CN117054831A true CN117054831A (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311018129.0A Pending CN117054831A (en) | 2023-08-14 | 2023-08-14 | Multifunctional platform for testing electrical performance of insulating material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117849562A (en) * | 2024-03-08 | 2024-04-09 | 常州艾博格电器有限公司 | Wire harness sheath insulating properties check out test set |
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2023
- 2023-08-14 CN CN202311018129.0A patent/CN117054831A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117849562A (en) * | 2024-03-08 | 2024-04-09 | 常州艾博格电器有限公司 | Wire harness sheath insulating properties check out test set |
| CN117849562B (en) * | 2024-03-08 | 2024-05-17 | 常州艾博格电器有限公司 | Wire harness sheath insulating properties check out test set |
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