CN109254232B - Wedge-shaped ultrahigh frequency partial discharge sensor - Google Patents
Wedge-shaped ultrahigh frequency partial discharge sensor Download PDFInfo
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- CN109254232B CN109254232B CN201811223779.8A CN201811223779A CN109254232B CN 109254232 B CN109254232 B CN 109254232B CN 201811223779 A CN201811223779 A CN 201811223779A CN 109254232 B CN109254232 B CN 109254232B
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- 238000002955 isolation Methods 0.000 claims abstract description 40
- 238000012360 testing method Methods 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012805 post-processing Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
A wedge-shaped ultrahigh frequency partial discharge sensor is characterized in that: the sensor handle comprises a sensor body (1) and an isolation spring pad (3); compared with the prior art, the invention has the beneficial effects that: the GIS equipment testing window testing device has the advantages that the requirements for testing GIS equipment testing windows with compact structural arrangement and narrow space of various voltage grades are met, the influence of external interference sources in the testing process is avoided, the judgment of the partial discharge type and severity is facilitated, the positioning accuracy of the partial discharge signals in the testing process is improved, and accurate and reliable technical support is provided for post-processing.
Description
Technical Field
The invention relates to the technical field of GIS partial discharge live detection, in particular to a sensor which is suitable for GIS tank bodies with various voltage levels and is designed because a person cannot find a proper angle to perform ultrahigh frequency partial discharge detection due to compact structural arrangement and narrow space.
Background
In the field ultrahigh frequency partial discharge detection process, an ultrahigh frequency sensor needs to be placed at an ultrahigh frequency pouring gate for detection, and in the GIS equipment installation process, the pouring gate is blocked by an equipotential connection row and cannot be subjected to ultrahigh frequency partial discharge test because an installer is unreasonable in the installation position of the ultrahigh frequency test pouring gate or unreasonable in the equipment structural design. The traditional ultrahigh frequency sensor is approximately cuboid, the sensor and the pouring port are required to be tightly attached during testing, force can be applied to the front face of the sensor only during placement, the size is large, the radian is single, and therefore the requirements of testing a tank body with compact arrangement and narrow space cannot be met, external interference signals easily enter the sensor, and the effect of testing is greatly affected. The method of fully wrapping the test points by using the metal aluminum foil ensures the accuracy of signals, but is not suitable for large-scale inspection and general detection.
Disclosure of Invention
The invention aims to: the invention provides a wedge-shaped ultrahigh frequency partial discharge sensor, which aims to solve the problems existing in the past.
The technical scheme is as follows:
a wedge-shaped ultrahigh frequency partial discharge sensor is characterized in that: the sensor handle comprises a sensor body (1) and an isolation spring pad (3); the sensor body (1) is a wedge-shaped body, an antenna bin (4) is arranged on the side face (1-1) of the first wedge-shaped body of the sensor body (1), and an isolation spring pad (3) is arranged around the antenna bin (4). The sensor body (1) is connected with the aviation interface (2). The first wedge side surface (1-1) and the second wedge side surface (1-2) of the sensor body (1) are arc inclined surfaces with inward radian (as shown in the figure).
The side surface of the antenna bin (4) is provided with a pulling device for hooking up the isolation spring pad (3), the inner side of the isolation spring pad (3) is provided with a notch (6), and the notch (6) is buckled with the pulling device;
the pulling device comprises a vertical piece (5-1) and a transverse pulling piece; the transverse pulling piece comprises a transverse plate (5-2) and two vertical plates (5-3), the two parallel vertical plates (5-3) are vertically arranged at two ends of the bottom of the transverse plate (5-2) and form a door-shaped structure with the transverse plate (5-2), the vertical plate (5-1) is vertically arranged at the upper end of the inner side of the transverse plate (5-2), and the vertical plate (5-1) and the transverse plate (5-2) form an L-shaped structure;
when the antenna is used, the horizontal pulling piece is placed in the notch (6) of the isolation spring pad (3) so that the vertical piece (5-1) is clung to one side of the isolation spring pad (3), then the isolation spring pad (3) is sleeved around the antenna bin (4), the vertical piece (5-1) is clamped between the isolation spring pad (3) and the sensor body (1), and the two vertical plates (5-3) of the horizontal pulling piece are fastened and contacted with the side face of the antenna bin (4); when the isolation elastic pad (3) needs to be disassembled, the transverse pulling piece is pulled outwards, so that the isolation elastic pad (3) is pulled up.
The inner side of a door-shaped structure formed by the transverse plate (5-2) and the two vertical plates (5-3) is provided with a pull ring (5-4), and the pull ring (5-4) is connected to the bottom of the transverse plate (5-2). The pulling device also comprises a draw hook (7) which can hook the pull ring (5-4) when in use.
The advantages and effects are that:
the invention provides a wedge-shaped ultrahigh frequency partial discharge sensor which comprises a sensor body and an isolation spring pad, wherein an aluminum alloy material is adopted as a sensor shell of the sensor, an antenna subjected to optimized layout is placed in the shell and is sealed and fixed by epoxy resin, so that technical parameters are ensured, and the size is adjusted. The shell is provided with the anti-skid groove, so that the operation in the testing process is convenient, and the damage to equipment caused by the sliding of the sensor from the hand is prevented. The isolation spring pad is made of novel materials with shielding function and suitable for elastic deformation, and the elastic deformation of the isolation spring pad is improved to be suitable for GIS tank testing requirements of various voltage levels.
The conventional sensor antenna bin is reasonably arranged inside the sensor while technical parameters such as sensitivity, frequency band, directivity and the like are ensured. Due to the unique structure of the wedge body, the wedge-shaped sensor can realize the detection of the blocking sprue gate of the equipotential connection row. Meanwhile, as the wedge-shaped body is an inclined plane, force can be applied to the side face of the sensor, and the sensor can still be closely attached to the pouring gate for the detection position with a small space. The external interference signals can be effectively isolated, the reliability and the accuracy of the test are ensured, the GIS test efficiency and the accuracy of ultrahigh frequency partial discharge signal type judgment are further improved, and the positioning accuracy is improved. The device can be directly placed in a GIS equipment insulation basin testing window with compact structural arrangement and narrow space for electrified detection. The sensor is not closely contacted with the tank bodies at two sides to generate gaps, so that the sensor is prevented from being entered due to external interference signals, the test result is prevented from being influenced, and adverse consequences caused by over-repair and under-repair of equipment are avoided. The wedge-shaped ultrahigh frequency sensor has the characteristics of strong adaptability, strong anti-interference capability, high accuracy and the like.
Compared with the prior art, the invention has the beneficial effects that:
the GIS equipment testing window testing device has the advantages that the requirements for testing GIS equipment testing windows with compact structural arrangement and narrow space of various voltage grades are met, the influence of external interference sources in the testing process is avoided, the judgment of the partial discharge type and severity is facilitated, the positioning accuracy of the partial discharge signals in the testing process is improved, and accurate and reliable technical support is provided for post-processing.
Drawings
FIG. 1 is a schematic side view of a sensor according to the present invention.
Fig. 2 is a schematic view of the inner side structure of the sensor according to the present invention.
FIG. 3 is a schematic view of the dimensions of a sensor according to the present invention;
FIG. 4 is a schematic side view of a sensor with a pull-up device;
FIG. 5 is an enlarged schematic view of the encircled portion of FIG. 4;
FIG. 6 is a side cross-sectional view of FIG. 5;
fig. 7 is a use state diagram of the pulling-up device.
In the figure: 1. the shell 2, the aviation interface 3, the isolation bullet pad 4 and the antenna bin.
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
a wedge-shaped ultrahigh frequency partial discharge sensor is characterized in that: the sensor handle comprises a sensor body (1) and an isolation spring pad (3); the sensor body (1) is a wedge-shaped body, an antenna bin (4) is arranged on the side face (1-1) of the first wedge-shaped body of the sensor body (1), and an isolation spring pad (3) is arranged around the antenna bin (4). The sensor body (1) is connected with the aviation interface (2). The first wedge side surface (1-1) and the second wedge side surface (1-2) of the sensor body (1) are arc inclined surfaces with inward radian (as shown in fig. 1-3). So that the utility model can be better adapted to different use places and environments.
The side surface of the antenna bin (4) is provided with a pulling device for hooking up the isolation spring pad (3), the inner side of the isolation spring pad (3) is provided with a notch (6), and the notch (6) is buckled with the pulling device;
the pulling device comprises a vertical piece (5-1) and a transverse pulling piece; the transverse pulling piece comprises a transverse plate (5-2) and two vertical plates (5-3), the two parallel vertical plates (5-3) are vertically arranged at two ends of the bottom of the transverse plate (5-2) and form a door-shaped structure with the transverse plate (5-2), the vertical plate (5-1) is vertically arranged at the upper end of the inner side of the transverse plate (5-2), and the vertical plate (5-1) and the transverse plate (5-2) form an L-shaped structure;
when the antenna is used, the horizontal pulling piece is placed in the notch (6) of the isolation spring pad (3) so that the vertical piece (5-1) is clung to one side of the isolation spring pad (3), then the isolation spring pad (3) is sleeved around the antenna bin (4), the vertical piece (5-1) is clamped between the isolation spring pad (3) and the sensor body (1), and the two vertical plates (5-3) of the horizontal pulling piece are fastened and contacted to the side face of the antenna bin (4); when the isolation elastic pad (3) needs to be disassembled, the transverse pulling piece is pulled outwards, so that the isolation elastic pad (3) is pulled up.
The inner side of a door-shaped structure formed by the transverse plate (5-2) and the two vertical plates (5-3) is provided with a pull ring (5-4), and the pull ring (5-4) is connected to the bottom of the transverse plate (5-2). The pulling device also comprises a draw hook (7) which can hook the pull ring (5-4) when in use.
When the device is required to be disassembled, the draw hook (7) stretches into the horizontal pulling piece to hook the pull ring (5-4) and pull the pull ring outwards, along with the movement of the horizontal pulling piece, the vertical piece (5-1) pushes the isolation spring pad (3) to locally move so that the isolation spring pad (3) leaves the sensor body (1), along with the further pulling of the draw hook (7), the isolation spring pad (3) is pulled up by the horizontal pulling piece and leaves the sensor body (1) and the antenna bin (4), the disassembly is completed, the disassembly is more convenient, and the overtightening hoop of the isolation spring pad (3) is prevented from being disassembled around the antenna bin (4). The vertical sheet (5-1) is a sheet hard board with the thickness of about 0.3-1 mm, and the sheet hard board is drawn relatively thick in the figure for better showing the structure.
The following is further described with reference to the accompanying drawings:
the sensor is shown in fig. 1, which is a schematic diagram of a side structure of the sensor, the sensor housing 1 is made of aluminum alloy, one side of the sensor is provided with an aviation interface 2, the other side of the sensor is wedge-shaped, the bottom of the sensor housing is provided with an arc surface which can be attached to an insulating basin, and an isolation spring pad 3 is arranged on the arc surface.
Fig. 2 is a schematic diagram of the inner structure of the sensor according to the present invention, which is the heart of the sensor—the antenna chamber 4. The antenna bin is used for sealing and fixing the antenna with epoxy resin after the optimized layout.
See fig. 3 for a dimensional view of the present invention.
Claims (5)
1. A wedge-shaped ultrahigh frequency partial discharge sensor is characterized in that: the sensor handle comprises a sensor body (1) and an isolation spring pad (3); the sensor body (1) is a wedge-shaped body, an antenna bin (4) is arranged on the side face (1-1) of the first wedge-shaped body of the sensor body (1), and an isolation spring pad (3) is arranged around the antenna bin (4).
2. The wedge-shaped uhf partial discharge sensor of claim 1, wherein: the first wedge side surface (1-1) and the second wedge side surface (1-2) of the sensor body (1) are arc inclined surfaces with inward radian.
3. The wedge-shaped ultrahigh frequency partial discharge sensor according to claim 1 or 2, wherein: the side surface of the antenna bin (4) is provided with a pulling device for hooking up the isolation spring pad (3), the inner side of the isolation spring pad (3) is provided with a notch (6), and the notch (6) is buckled with the pulling device;
the pulling device comprises a vertical piece (5-1) and a transverse pulling piece; the transverse pulling piece comprises a transverse plate (5-2) and two vertical plates (5-3), the two parallel vertical plates (5-3) are vertically arranged at two ends of the bottom of the transverse plate (5-2) and form a door-shaped structure with the transverse plate (5-2), the vertical plate (5-1) is vertically arranged at the upper end of the inner side of the transverse plate (5-2), and the vertical plate (5-1) and the transverse plate (5-2) form an L-shaped structure;
when the antenna is used, the horizontal pulling piece is placed in the notch (6) of the isolation spring pad (3) so that the vertical piece (5-1) is clung to one side of the isolation spring pad (3), then the isolation spring pad (3) is sleeved around the antenna bin (4), the vertical piece (5-1) is clamped between the isolation spring pad (3) and the sensor body (1), and the two vertical plates (5-3) of the horizontal pulling piece are fastened and contacted with the side face of the antenna bin (4); when the isolation elastic pad (3) needs to be disassembled, the transverse pulling piece is pulled outwards, so that the isolation elastic pad (3) is pulled up.
4. A wedge-shaped uhf partial discharge sensor according to claim 3, wherein: the inner side of a door-shaped structure formed by the transverse plate (5-2) and the two vertical plates (5-3) is provided with a pull ring (5-4), and the pull ring (5-4) is connected to the bottom of the transverse plate (5-2).
5. The wedge-shaped uhf partial discharge sensor of claim 4, wherein: the pulling device also comprises a draw hook (7) which can hook the pull ring (5-4) when in use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811223779.8A CN109254232B (en) | 2018-10-19 | 2018-10-19 | Wedge-shaped ultrahigh frequency partial discharge sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811223779.8A CN109254232B (en) | 2018-10-19 | 2018-10-19 | Wedge-shaped ultrahigh frequency partial discharge sensor |
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| Publication Number | Publication Date |
|---|---|
| CN109254232A CN109254232A (en) | 2019-01-22 |
| CN109254232B true CN109254232B (en) | 2024-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811223779.8A Active CN109254232B (en) | 2018-10-19 | 2018-10-19 | Wedge-shaped ultrahigh frequency partial discharge sensor |
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2018
- 2018-10-19 CN CN201811223779.8A patent/CN109254232B/en active Active
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