CN216285557U - Detachable ultrahigh frequency partial discharge built-in sensor - Google Patents
Detachable ultrahigh frequency partial discharge built-in sensor Download PDFInfo
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- CN216285557U CN216285557U CN202121804943.1U CN202121804943U CN216285557U CN 216285557 U CN216285557 U CN 216285557U CN 202121804943 U CN202121804943 U CN 202121804943U CN 216285557 U CN216285557 U CN 216285557U
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Abstract
The utility model discloses a detachable ultrahigh frequency partial discharge built-in sensor, which comprises a metal cover plate, a core cover plate, a sealing cover, an antenna probe, a guide rod, an insulating cushion block, a fixing ring and a radio frequency connector, wherein the metal cover plate is arranged on the core cover plate; the upper end of the guide rod is connected with the lower end of the radio frequency connector to form a guide rod assembly; the inner ring of the fixing ring is provided with an insulating cushion block, and the insulating cushion block is firmly connected to the upper end of the antenna probe to form an antenna probe assembly; the sealing cover is firmly fixed at the lower end of the metal cover plate to form a metal cover plate assembly; the core cover plate is firmly connected to the upper surface of the fixing ring, and the guide rod assembly penetrates through the core cover plate and the insulating cushion block and is inserted onto the antenna probe; the core cover plate is fixedly secured to the metal cover plate assembly. When the device is used, the problem that the traditional device is inconvenient to replace and maintain when in use can be effectively solved.
Description
Technical Field
The utility model relates to the field of GIS partial discharge online monitoring, in particular to a detachable ultrahigh frequency partial discharge built-in sensor.
Background
The GIS has the advantages of less maintenance workload, compact structure, convenient installation and the like, and gradually becomes mainstream equipment in the project construction of an ultra-high voltage power system in recent years, the operation reliability of the GIS is more and more concerned by people, the GIS inevitably has insulation defects threatening the insulation performance due to the influence of various factors such as manufacture, transportation field assembly, operation, maintenance, repair and the like, the defects often generate partial discharge phenomena in the early stage, the electrical insulation performance of the GIS is reduced if the partial discharge exists for a long time, and finally insulation faults are caused, and the monitoring of the partial discharge inside the GIS by adopting a proper method is an effective means for judging the long-term reliability of the GIS insulation, so that the early-stage potential danger can be timely found, and accidents are prevented. Therefore, the online monitoring of the partial discharge in the GIS is realized, and the online monitoring method has important practical significance for preventing accidents, improving the equipment utilization rate and realizing the conversion from the traditional 'regular maintenance' to the 'state maintenance'.
The built-in sensor in the prior art has the following defects:
1. in the existing built-in sensor, most GIS manufacturers adopt a basin-type insulator with a metal flange, so that electromagnetic waves generated by partial discharge are completely shielded inside a GIS, and signals are difficult to detect by using an external sensor outside the GIS.
2. The maintenance and the change of sensor do not influence the operation of power transmission and transformation equipment self, need isolated and the direct connection of the transmission of electricity jar body when guaranteeing sensor sensitivity, be not convenient for change and maintain.
SUMMERY OF THE UTILITY MODEL
In view of the shortcomings in the prior art, the present invention provides a detachable ultrahigh frequency partial discharge built-in sensor to solve the above problems in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme:
a detachable ultrahigh frequency partial discharge built-in sensor comprises a metal cover plate, a core cover plate, a sealing cover, an antenna probe, a guide rod, an insulating cushion block, a fixing ring and a radio frequency connector;
the upper end of the guide rod is connected with the lower end of the radio frequency connector to form a guide rod assembly;
the inner ring of the fixing ring is provided with an insulating cushion block, and the insulating cushion block is firmly connected to the upper end of the antenna probe to form an antenna probe assembly;
the sealing cover is firmly fixed at the lower end of the metal cover plate to form a metal cover plate assembly;
the core cover plate is firmly connected to the upper surface of the fixing ring, and the guide rod assembly penetrates through the core cover plate and the insulating cushion block and is inserted onto the antenna probe;
the core cover plate is fixedly secured to the metal cover plate assembly.
Preferably, the guide rod is processed by brass, and the lower end of the guide rod is provided with an elastic metal part; the radio frequency connector is an outsourcing N-KF radio frequency connector, and the guide rod is connected with the radio frequency connector through welding.
Preferably, the fixed ring is formed by metal processing, the bolt is sleeved on the fixed ring, the antenna probe is formed by metal processing, the insulating cushion block is formed by high-insulating material processing, the antenna probe is connected with the insulating cushion block through the bolt, and a sealing ring is arranged in a sealing groove between the antenna probe and the insulating cushion block.
Preferably, the sealing cover is made of high-insulation materials, the metal cover plate is made of aluminum alloy, the sealing cover is connected with the metal cover plate through bolts, and a sealing ring is arranged in a sealing groove between the sealing cover and the metal cover plate.
Preferably, the core cover plate is processed by aluminum alloy, the core cover plate is connected with the fixing ring through bolts, and a sealing ring is arranged in a sealing groove between the core cover plate and the insulating cushion block; the guide rod assembly is firmly connected to the core cover plate through bolts.
Preferably, the metal cover plate is connected with the core cover plate through bolts, and a sealing ring is arranged in a sealing groove between the metal cover plate and the core cover plate.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, by installing the sealing cover, when the built-in ultrahigh frequency sensor is used, the installation position needs to be reserved in the pipeline at the initial stage of GIS manufacturing, and the received signal is led out of the GIS body to form the monitoring system, so that the monitoring system has the advantages of high sensitivity, difficulty in being influenced by external interference and operating environment noise and the like.
Drawings
FIG. 1 is a longitudinal sectional view of the present invention;
FIG. 2 is a schematic view of a guide bar assembly of the present invention;
FIG. 3 is a schematic view of a fixed ring structure of the present invention;
FIG. 4 is a schematic diagram of an antenna probe according to the present invention;
FIG. 5 is a schematic view of the structure of the insulating spacer of the present invention;
FIG. 6 is a schematic view of the sealing cap of the present invention;
FIG. 7 is a schematic view of a metal cover plate according to the present invention;
fig. 8 is a schematic view of the core cover plate structure of the present invention.
Wherein: 1. a metal cover plate; 2. a core cover plate; 3. a radio frequency connector; 4. a guide bar; 5. a sealing cover; 6. a fixing ring; 7. insulating cushion blocks; 8. an antenna probe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-8, a detachable ultrahigh frequency partial discharge built-in sensor includes a metal cover plate 1, a core cover plate 2, a sealing cover 5, an antenna probe 8, a guide rod 4, an insulating pad 7, a fixing ring 6 and a radio frequency connector 3;
the upper end of the guide rod 4 is connected with the lower end of the radio frequency connector 3 to form a guide rod assembly;
an insulating cushion block 7 is arranged on the inner ring of the fixing ring 6, and the insulating cushion block 7 is firmly connected to the upper end of an antenna probe 8 to form an antenna probe assembly;
the sealing cover 5 is fixedly arranged at the lower end of the metal cover plate to form a metal cover plate 1 assembly;
the core cover plate 2 is firmly connected to the upper surface of the fixing ring 6, and the guide rod assembly penetrates through the core cover plate 2 and the insulating cushion block 7 and is inserted onto the antenna probe 8;
the core cover plate 2 is firmly fixed to the metal cover plate assembly.
In the embodiment, the guide rod 4 is processed by brass, and the lower end of the guide rod 4 is an elastic metal part; the radio frequency connector 3 is an outsourcing N-KF radio frequency connector, the guide rod 4 is connected with the radio frequency connector 3 through welding, and welding spots are polished to be flat and have no burrs.
In this embodiment, the fixing ring 6 is made of metal, 4 groups of bolts are sleeved on the fixing ring 6, the antenna probe 8 is made of metal, the insulating cushion block 7 is made of high-insulation material, a through hole is formed in the inner side of the insulating cushion block 7 in a penetrating manner, the through hole can provide an installation space for the guide rod assembly, and the insulating cushion block 7 can fix the guide rod 4 on the inner side and the fixing ring 6 on the outer side and can play an insulating role at the same time; antenna probe 8 passes through the bolt and is connected with insulating pad 7, and antenna probe 8 can transmit electromagnetic information, and has the sealing washer in the seal groove between antenna probe 8 and the insulating pad 7, and the sealing washer can increase the leakproofness of device, prevents the condition of current leakage.
In the embodiment, the sealing cover 5 is made of high-insulation material, and the sealing cover 5 can isolate the sensor at the inner side from the outside, so that the safety of the device is ensured; the metal cover plate 1 is formed by processing aluminum alloy, the sealing cover 5 is connected with the metal cover plate 1 through bolts, and a sealing ring is arranged in a sealing groove between the sealing cover 5 and the metal cover plate 1.
In the embodiment, the core cover plate 2 is processed by aluminum alloy, the core cover plate 2 is connected with the fixing ring 6 through bolts, and a sealing ring is arranged in a sealing groove between the core cover plate 2 and the insulating cushion block 7; the guide rod assembly is firmly connected to the core cover plate 2 by bolts.
In this embodiment, the metal cover plate 1 is connected to the core cover plate 2 by bolts, and a seal ring is disposed in a seal groove between the metal cover plate 1 and the core cover plate 2.
The working principle is as follows: when the guide rod assembly is used, the upper end of the guide rod 4 is firmly welded with the bottom end of the radio frequency connector 3 to form the guide rod assembly, and welding spots are polished to be flat and have no burrs. 4 groups of bolts are sleeved on the fixing ring 6, the whole body is sleeved on the insulating cushion block 7, an O-shaped sealing ring is arranged in a sealing groove of a sealing surface of the antenna probe 8 and the insulating cushion block 7, and the insulating cushion block 7 is firmly connected to the antenna probe 8 through the bolts to form the antenna probe assembly. An O-shaped sealing ring is arranged in a sealing groove of the sealing surface of the core cover plate 2 and the insulating cushion block 7, and 4 groups of bolts on the antenna probe assembly (sleeved on the fixing ring 6) are used for firmly connecting the core cover plate 2. A guide rod component (a shell of the radio frequency connector 3) is firmly connected to the core cover plate 2 by a bolt, and the other end (an elastic part at the lower end of the guide rod 4) penetrates through an insulating cushion block 7 and is inserted on an antenna probe 8 in a sealing way; the antenna probe assembly, the core cover plate 2 and the guide rod assembly form a core assembly together. An O-shaped sealing ring is arranged in a sealing groove of the sealing surface of the sealing cover 5 and the metal cover plate 1, and the sealing cover 5 is firmly fixed on the metal cover plate 1 by bolts to form a metal cover plate assembly. An O-shaped sealing ring is arranged in a sealing groove of a sealing surface of the core cover plate 2 and the metal cover plate 1, and the core assembly (the core cover plate 2) is firmly fixed on the metal cover plate assembly (the metal cover plate 1) by bolts.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (6)
1. A detachable ultrahigh frequency partial discharge built-in sensor is characterized by comprising a metal cover plate (1), a core cover plate (2), a sealing cover (5), an antenna probe (8), a guide rod (4), an insulating cushion block (7), a fixing ring (6) and a radio frequency connector (3);
the upper end of the guide rod (4) is connected with the lower end of the radio frequency connector (3) to form a guide rod assembly;
an insulating cushion block (7) is arranged on the inner ring of the fixing ring (6), and the insulating cushion block (7) is firmly connected to the upper end of the antenna probe (8) to form an antenna probe assembly;
the sealing cover (5) is firmly fixed at the lower end of the metal cover plate (1) to form a metal cover plate assembly;
the core cover plate (2) is firmly connected to the upper surface of the fixing ring (6), and the guide rod assembly penetrates through the core cover plate (2) and the insulating cushion block (7) and is inserted onto the antenna probe (8);
the core cover plate (2) is fixed on the metal cover plate component.
2. A detachable ultrahigh frequency partial discharge built-in sensor according to claim 1, wherein the guide rod (4) is machined from brass, and the lower end of the guide rod (4) is an elastic metal part; the radio frequency connector (3) is an outsourcing N-KF radio frequency connector, and the guide rod (4) is connected with the radio frequency connector (3) through welding.
3. A detachable ultrahigh frequency partial discharge built-in sensor according to claim 1, wherein the fixing ring (6) is made of metal, the fixing ring (6) is sleeved with a bolt, the antenna probe (8) is made of metal, the insulating pad (7) is made of high insulating material, the antenna probe (8) is connected with the insulating pad (7) through the bolt, and a sealing ring is arranged in a sealing groove between the antenna probe (8) and the insulating pad (7).
4. A detachable ultrahigh frequency partial discharge built-in sensor according to claim 1, characterized in that the sealing cover (5) is made of high insulating material, the metal cover plate (1) is made of aluminum alloy, the sealing cover (5) is connected with the metal cover plate (1) through bolts, and a sealing ring is arranged in a sealing groove between the sealing cover (5) and the metal cover plate (1).
5. A detachable ultrahigh frequency partial discharge built-in sensor according to claim 1, wherein the core cover plate (2) is made of aluminum alloy, the core cover plate (2) is connected with the fixing ring (6) through bolts, and a sealing ring is arranged in a sealing groove between the core cover plate (2) and the insulating cushion block (7); the guide rod component is firmly connected to the core cover plate (2) through bolts.
6. A detachable built-in ultrahigh frequency partial discharge sensor according to claim 1, characterized in that the metal cover plate (1) is connected with the core cover plate (2) through bolts, and a sealing ring is arranged in a sealing groove between the metal cover plate (1) and the core cover plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121804943.1U CN216285557U (en) | 2021-08-04 | 2021-08-04 | Detachable ultrahigh frequency partial discharge built-in sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121804943.1U CN216285557U (en) | 2021-08-04 | 2021-08-04 | Detachable ultrahigh frequency partial discharge built-in sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216285557U true CN216285557U (en) | 2022-04-12 |
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ID=81060250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121804943.1U Active CN216285557U (en) | 2021-08-04 | 2021-08-04 | Detachable ultrahigh frequency partial discharge built-in sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216285557U (en) |
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2021
- 2021-08-04 CN CN202121804943.1U patent/CN216285557U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A detachable UHF partial discharge built-in sensor Effective date of registration: 20220628 Granted publication date: 20220412 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: LANDPOWER WUHAN CO.,LTD. Registration number: Y2022420000192 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230904 Granted publication date: 20220412 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: LANDPOWER WUHAN CO.,LTD. Registration number: Y2022420000192 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |