CN115808546A - Interface assembly of monitoring device for oiled paper capacitive bushing and use method - Google Patents
Interface assembly of monitoring device for oiled paper capacitive bushing and use method Download PDFInfo
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- CN115808546A CN115808546A CN202211512968.3A CN202211512968A CN115808546A CN 115808546 A CN115808546 A CN 115808546A CN 202211512968 A CN202211512968 A CN 202211512968A CN 115808546 A CN115808546 A CN 115808546A
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Abstract
The invention relates to the technical field of insulation state detection of electric equipment, in particular to an interface component of a monitoring device for an oil paper capacitive bushing and a using method of the interface component. The invention has reasonable structural design and complete functions, and can be used for monitoring the gas characteristic information on the oil surface on line according to the oil-immersed bushing, thereby providing a solution for further acquiring the complete quantity and the corresponding change rule of the characteristic gas generated by the severe sudden failure of the power transformer.
Description
Technical Field
The invention relates to the technical field of insulation state detection of electric equipment, in particular to an interface assembly of a monitoring device for an oiled paper condenser bushing and a using method of the interface assembly.
Background
The oil paper insulation capacitor type bushing is key equipment which plays a role in insulation and support in an extra-high voltage power transmission system. The sleeve pipe should bear the long-time effect of strong mechanical force, heavy current and high voltage in the operation process, still must bear the influence of moist weather and pollutant such as rain, fog, insulating properties can take place the degradation gradually, can lead to the explosion accident in the serious occasion, not only causes the sleeve pipe itself to damage, can lead to the accident further to enlarge, constitutes serious threat to transformer and nearby equipment, causes large tracts of land power failure accident and human casualties even, causes social order confusion and great economic loss.
At present, the insulation condition of a sleeve is mainly tested according to the standard of the power industry, and the method mainly comprises the steps of measuring the insulation resistance of the sleeve to the ground, the dielectric loss tangent value, the capacitance, the chromatogram of gas dissolved in oil, the alternating current withstand voltage and partial discharge. These casing failure detection methods have more limitations. For example, for oil-poor equipment, frequent oil extraction detection can affect the operation of the equipment. With the development of related research, a series of related problems and projects such as oil paper insulation capacitive bushing operation early warning technology based on pressure and ultrahigh frequency are proposed, but the perfect combination of the integrated multi-parameter online monitoring device and the bushing body is still a difficult problem, and especially, an effective structure and a use method of an interface component of the oil paper insulation capacitive bushing pressure and ultrahigh frequency online monitoring device are lacked.
Therefore, an interface assembly of a monitoring device for the oiled paper condenser bushing and a using method are provided.
Disclosure of Invention
The invention aims to provide an interface assembly of a monitoring device for an oil paper capacitive bushing and a using method thereof, which solve the problems in the background technology by improving a metal plug.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an oiled paper condenser bushing pressure and superfrequency monitoring devices interface module, includes sleeve pipe body, metal end cap and gets the sealed lid of oil mouth, still includes the sealed insulating rubber circle of using of spring and collocation, the metal end cap both ends are thick head end and thin head end respectively, the spring cup joints at thick head end, and insulating rubber snare is at thin head end, the spring is fixed on the sleeve pipe body, set up out the oil way in the thin head end, get to be equipped with one on the sealed lid of oil mouth and detect device mounting hole with thin head end mutually supporting, thin head end inserts in the detect device mounting hole.
Preferably, the thin head end is provided with a sealing ring placing groove, and the insulating rubber ring is sleeved in the sealing ring placing groove.
Preferably, the oil outlet channel adopts an inverted T-shaped internal open hole design, so that insulating oil inside the sleeve body can enter the oil outlet channel from multiple angles, and the insulating oil inside the sleeve body can conveniently flow out during measurement.
Preferably, the whole diameter of the spring is consistent with that of the thick end of the metal plug, and the spring is longer than the metal plug under the condition of no deformation so as to ensure enough deformation strength.
Preferably, the diameter of the inner hole of the insulating rubber ring is consistent with the diameter of the lower part of the thin end of the metal plug, so that good sealing performance is guaranteed after installation.
Preferably, the metal plug and the spring sleeve are both made of stainless steel, and the spring is a round wire spring.
The invention also provides a use method of the oil paper capacitive bushing pressure and ultrahigh frequency monitoring device interface component based on the oil paper capacitive bushing pressure and ultrahigh frequency monitoring device interface component, which comprises an ultrahigh frequency monitoring device, a bushing body, a bushing oil taking port, a metal plug and an oil taking port sealing cover, and is characterized by further comprising the following steps:
the method comprises the following steps: taking off the sealing cover of the oil taking port of the sleeve body, installing a spring at the thick end of the metal plug, and installing an insulating rubber ring at the thin end of the metal plug;
step two: after the metal plug is assembled, the thick end with one end of the spring is placed into the sleeve body, and the thin end with the insulating rubber ring is placed into the aperture of the oil taking port outwards;
step three: after the assembly is installed, the oil taking opening is sealed and covered, the sealing rubber ring of the assembly can be firmly propped against the sealing cover by the spring along with the screwing of the sealing cover, and the thin end of the metal plug can extend out of the detection device mounting hole of the sleeve oil taking opening sealing cover;
step four: when insulating oil needs to be monitored, the pressure and ultrahigh frequency monitoring device is installed on the detection device mounting hole of the oil outlet sealing cover is taken from the sleeve pipe, the detection device mounting hole is provided with an internal thread, the device can push the thin end of the metal plug along with the inward advance of the thread, the coil is compressed and deformed, the sealing rubber ring is separated from the sealing cover, and the insulating oil in the sleeve pipe can flow into the monitoring device.
Step five: after the monitoring is finished, the pressure and ultrahigh frequency monitoring device is taken down through the threads, the metal plug can recover under the action of the spring, and the sealing rubber ring is in contact with the sealing cover of the oil taking port to plug the mounting hole of the detection device again.
Compared with the prior art, the invention has the following beneficial effects:
the invention has reasonable structural design and complete functions, and can be used for monitoring the gas characteristic information on the oil surface on line according to the oil-immersed bushing, thereby providing a solution for further acquiring the complete quantity and the corresponding change rule of the characteristic gas generated by the severe sudden failure of the power transformer. The design of the whole system can effectively reduce the cost of researching the insulation problem of the oil-paper insulation power transformer in colleges and universities and related scientific research institutes, and promote the research range of insulation detection technology. The method can effectively realize effective detection of weak partial discharge characteristic signals and effective simulation of intermittent partial discharge, and provides reliable technical support for understanding of the discharge mechanism and discharge characteristics of the intermittent partial discharge insulation defect of the gas insulated switchgear and effective detection of the intermittent partial discharge insulation defect.
Drawings
FIG. 1 is a schematic view of the present invention installed at a tubing access port of an interface assembly;
fig. 2 is a schematic structural diagram of the metal plug of the present invention.
In the figure: 1. a sleeve body; 2. a metal plug; 3. an oil taking port sealing cover; 4. a spring; 5. an insulating rubber ring; 201. a thick head end; 202. a thin head end; 6. an oil outlet channel; 7. a detection device mounting hole; 8. and a sealing ring placing groove.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is essential. Thus, a feature defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 a specific case to those of ordinary skill in the art.
The invention provides an interface component of a monitoring device for an oiled paper capacitive bushing and a using method, and the technical scheme is as follows:
the utility model provides an oil paper condenser type sleeve pipe pressure and superfrequency monitoring devices interface module, includes sleeve pipe body 1, metal end cap 2 and gets the sealed lid 3 of oil mouth, still includes spring 4 and the sealed insulating rubber circle 5 of using of its collocation, 2 both ends of metal end cap are thick head end 201 and thin head end 202 respectively, spring 4 cup joints at thick head end 201, and insulating rubber circle 5 covers at thin head end 202, spring 4 fixes on sleeve pipe body 1, it has set up out oil duct 6 in the thin head end 202, get to be equipped with one on the sealed lid 3 of oil mouth and detect device mounting hole 7 with thin head end 202 mutually supporting, thin head end 202 inserts in the detect device mounting hole 7.
According to the invention, the sleeve body 1 is sealed by the oil taking port sealing cover 3 with the detection device mounting hole 7, the metal plug 2 is mounted in the detection device mounting hole 7, the spring 4 is mounted at the thick end 201 of the metal plug 2, the spring 4 is fixed on the sleeve body 1, the thin end 202 is inserted into the detection device mounting hole 7, when the oil taking device is used, the monitoring device presses the metal plug 2, the spring 4 contracts to deform, and the insulating oil positioned in the sleeve flows into the oil outlet channel 6 of the thin end 202, so that the insulating oil flows into the monitoring device.
In an embodiment of the present invention, the thin end 202 is opened with a seal ring groove 8, and the insulating rubber ring 5 is fitted in the seal ring groove 8.
The sealing ring placing groove 8 can limit the radial movement of the insulating rubber ring 5 relative to the metal plug 2, the flexible pressing after the plug is installed is also guaranteed, and the insulating rubber ring 5 is prevented from falling off.
As an embodiment of the present invention, the oil outlet passage 6 is designed to have an inverted "T" shape, so that the insulating oil inside the casing body 1 can enter the oil outlet passage 6 from multiple angles, which is convenient for the insulating oil inside the casing body 1 to flow out during measurement.
When pressing metal end cap 2, be located the inside insulating oil of sleeve pipe and flow into the oil outlet 6 of thin head end 202, in order to guarantee that the flow of oil outlet 6 is convenient to be monitored, all set up the export of oil outlet 6 around thin head end 202, can let the inside insulating oil of sleeve pipe body 1 get into in the oil outlet 6 from a plurality of angles, see on the cross-sectional view and be similar to "T" type of falling.
In one embodiment of the present invention, the overall diameter of the spring 4 is the same as the diameter of the thick end 201 of the metal plug 2, and the length of the spring in the undeformed state is at least about 10mm longer than that of the metal plug 2, and the wire diameter should be at least 2mm to ensure sufficient deformation strength.
In one embodiment of the present invention, the diameter of the inner hole of the insulating rubber ring 5 is the same as the diameter of the lower portion of the thin end 202 of the metal plug 2, and the thickness thereof should be at least 4mm, so as to ensure good sealing performance after installation.
The metal plug 2 and the spring 4 sleeve are made of stainless steel materials, and the spring 4 is a round wire spring 4.
The stainless steel has the advantages of good corrosion resistance, good physical property and good process property, can resist the long-time erosion of insulating oil, resists high temperature and low temperature, prolongs the service life, has the advantages of high toughness and long service life of the round wire spring 4, can work for a long time, and ensures that the resilience force reduces the condition that the spring 4 generates plastic deformation.
The invention also provides a use method of the oil paper capacitive bushing pressure and ultrahigh frequency monitoring device interface component based on the oil paper capacitive bushing pressure and ultrahigh frequency monitoring device interface component, which comprises an ultrahigh frequency monitoring device, a bushing body 1, a bushing oil taking port, a metal plug 2 and an oil taking port sealing cover 3, and is characterized by further comprising the following steps:
the method comprises the following steps: taking off the sealing cover 3 of the oil taking port of the sleeve body 1, installing the spring 4 at the thick end 201 of the metal plug 2, and installing the insulating rubber ring 5 at the thin end 202 of the metal plug 2;
step two: after the metal plug 2 is assembled, the thick end 201 with one end of the spring 4 is placed into the sleeve body 1, and the thin end 202 with the insulating rubber ring 5 is placed into the aperture of the oil taking port outwards;
step three: after the assembly is installed, the sealing cover 3 of the oil taking port is covered, the spring 4 can firmly prop the sealing rubber ring of the assembly on the sealing cover along with the screwing of the sealing cover, and the thin end 202 of the metal plug 2 can extend out of the mounting hole 7 of the detection device of the sealing cover of the oil taking port of the sleeve by about 2-3mm;
step four: when insulating oil needs to be monitored, the pressure and ultrahigh frequency monitoring device is installed on the detection device mounting hole 7 of the oil port sealing cover is taken out to the sleeve (from the installation of the right part in fig. 1), the detection device mounting hole 7 is provided with an internal thread, the device can push up the thin end 202 of the metal plug 2 along with the inward advance of the thread, at the moment, the coil is compressed and deformed, the sealing rubber ring is separated from the sealing cover, and the insulating oil inside the sleeve (at the left part in fig. 1) can flow into the monitoring device.
Step five: after the monitoring is finished, the pressure and ultrahigh frequency monitoring device is taken down through threads, the metal plug 2 recovers under the action of the spring 4, and the sealing rubber ring is in contact with the sealing cover 3 of the oil taking port to block the mounting hole 7 of the detecting device again.
The electric elements in the document are electrically connected with an external main controller and 220V mains supply through a transformer, the main controller can be a conventional known device controlled by a computer and the like, the product model provided by the invention is only used according to the structural characteristics of the product, the product can be adjusted and modified after being purchased, so that the product is more matched with and accords with the technical scheme of the invention, the product model is a technical scheme of the optimal application of the technical scheme, the product model can be replaced and modified according to the required technical parameters, and the product model is familiar to the technical personnel in the field, so that the technical scheme provided by the invention can clearly obtain the corresponding use effect.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an oiled paper condenser type bushing pressure and superfrequency monitoring devices interface module, includes sleeve pipe body (1), metal end cap (2) and gets the sealed lid (3) of oil mouth, its characterized in that: still include spring (4) and sealed insulating rubber circle (5) of using of collocation thereof, metal end cap (2) both ends are thick head end (201) and thin head end (202) respectively, spring (4) cup joint thick head end (201), and insulating rubber circle (5) cover is at thin head end (202), spring (4) are fixed on sleeve pipe body (1), set up oil outlet (6) in thin head end (202), it is equipped with one detection device mounting hole (7) of mutually supporting with thin head end (202) to get hydraulic fluid port sealed lid (3), thin head end (202) insert in detection device mounting hole (7).
2. The interface assembly of a monitoring device for an oilpaper condenser bushing of claim 1, wherein: the thin head end (202) is provided with a sealing ring placing groove (8), and the insulating rubber ring (5) is sleeved in the sealing ring placing groove (8).
3. The interface assembly of the monitoring device for the oilpaper condenser bushing of claim 2, wherein: the oil outlet channel (6) adopts an inverted T-shaped internal opening design, so that the insulating oil inside the sleeve pipe body (1) can enter the oil outlet channel (6) from multiple angles, and the insulating oil inside the sleeve pipe body (1) can flow out conveniently during measurement.
4. The interface assembly of a monitoring device for an oilpaper condenser bushing of claim 1, wherein: the overall diameter of the spring (4) is consistent with that of the thick end (201) of the metal plug (2), and the length of the spring is longer than that of the metal plug (2) under the undeformed condition so as to ensure enough deformation strength.
5. The interface assembly of a monitoring device for an oilpaper condenser bushing of claim 1, wherein: the diameter of the inner hole of the insulating rubber ring (5) is consistent with the diameter of the lower part of the thin end (202) of the metal plug (2), so that good sealing performance is ensured after installation.
6. The interface assembly of a monitoring device for an oilpaper condenser bushing as claimed in any one of claims 1 to 5, wherein: the metal plug (2) and the spring (4) sleeve are both made of stainless steel materials, and the spring (4) is a round wire spring (4).
7. The use method of the interface component of the oiled paper condenser bushing pressure and ultrahigh frequency monitoring device comprises the ultrahigh frequency monitoring device, a bushing body (1), a bushing oil taking port, a metal plug (2) and an oil taking port sealing cover (3), and is characterized by further comprising the following steps:
the method comprises the following steps: taking down an oil taking port sealing cover (3) of a sleeve body (1), installing a spring (4) at a thick end (201) of a metal plug (2), and installing an insulating rubber ring (5) at a thin end (202) of the metal plug (2);
step two: after the metal plug (2) is assembled, the thick end (201) with one end of the spring (4) is placed into the sleeve body (1), and the thin end (202) with the insulating rubber ring (5) is placed outwards into the aperture of the oil taking port;
step three: after the assembly is installed, the oil taking opening sealing cover (3) is covered, the sealing rubber ring of the assembly can be firmly propped against the sealing cover by the spring (4) along with the screwing of the sealing cover, and the thin end (202) of the metal plug (2) can extend out of the detection device mounting hole (7) of the sleeve oil taking opening sealing cover;
step four: when insulating oil needs to be monitored, the pressure and ultrahigh frequency monitoring device is installed on a detection device mounting hole (7) of the oil port sealing cover is taken out from the sleeve, the detection device mounting hole (7) is provided with an internal thread, the device can be pushed to a thin end (202) of the metal plug (2) along with the inward advance of the thread, the coil is compressed and deformed, the sealing rubber ring is separated from the sealing cover, and the insulating oil inside the sleeve can flow into the monitoring device.
Step five: after the monitoring is finished, the pressure and ultrahigh frequency monitoring device is taken down through threads, the metal plug (2) recovers under the action of the spring (4), and the sealing rubber ring is contacted with the oil taking port sealing cover (3) to plug the detection device mounting hole (7) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211512968.3A CN115808546A (en) | 2022-11-29 | 2022-11-29 | Interface assembly of monitoring device for oiled paper capacitive bushing and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211512968.3A CN115808546A (en) | 2022-11-29 | 2022-11-29 | Interface assembly of monitoring device for oiled paper capacitive bushing and use method |
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| CN115808546A true CN115808546A (en) | 2023-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211512968.3A Pending CN115808546A (en) | 2022-11-29 | 2022-11-29 | Interface assembly of monitoring device for oiled paper capacitive bushing and use method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117405284A (en) * | 2023-12-15 | 2024-01-16 | 南京中鑫智电科技有限公司 | Pressure early warning method and system for sleeve oil hole plug assembly |
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2022
- 2022-11-29 CN CN202211512968.3A patent/CN115808546A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117405284A (en) * | 2023-12-15 | 2024-01-16 | 南京中鑫智电科技有限公司 | Pressure early warning method and system for sleeve oil hole plug assembly |
| CN117405284B (en) * | 2023-12-15 | 2024-03-01 | 南京中鑫智电科技有限公司 | Pressure early warning method and system for sleeve oil hole plug assembly |
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