CN114078653A - Solid-sealed polar pole of tubular capacitor - Google Patents
Solid-sealed polar pole of tubular capacitor Download PDFInfo
- Publication number
- CN114078653A CN114078653A CN202010800242.4A CN202010800242A CN114078653A CN 114078653 A CN114078653 A CN 114078653A CN 202010800242 A CN202010800242 A CN 202010800242A CN 114078653 A CN114078653 A CN 114078653A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- outgoing line
- line conductor
- tubular
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 92
- 239000004020 conductor Substances 0.000 claims abstract description 42
- 238000000819 phase cycle Methods 0.000 claims abstract description 26
- 238000005266 casting Methods 0.000 claims abstract description 19
- 239000004593 Epoxy Substances 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 claims description 18
- 239000003985 ceramic capacitor Substances 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims 1
- 230000004927 fusion Effects 0.000 description 13
- 238000013461 design Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/027—Integrated apparatus for measuring current or voltage
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses a solid-sealed polar pole of a tubular capacitor, which comprises: the device comprises an epoxy casting body of an embedded pole, a flexible connection structure and a sensor assembly sealed in the casting body; the epoxy casting body comprises an integrally formed epoxy shell, a vacuum circuit breaker and a transverse outgoing line conductor. The movable end of the vacuum circuit breaker is connected with a vertical outgoing line conductor of the vacuum circuit breaker through a flexible connection structure. The sensor assembly includes at least: the upper energy-taking capacitor and the upper phase sequence measuring capacitor are concentrically arranged outside a vertical outgoing line conductor of the vacuum circuit breaker; the device comprises a tubular lower phase sequence measuring capacitor, a tubular zero sequence measuring capacitor, a tubular lower energy-taking capacitor and an annular current measuring coil which are concentrically arranged outside a transverse outgoing line conductor. The tubular sensor is concentrically arranged outside the wire inlet and outlet conductor, so that the embedded pole disclosed by the invention is compact in structure, complete in function and low in cost.
Description
Technical Field
The invention belongs to the technical field of power equipment, and particularly relates to a primary-secondary deep fusion type solid-sealed polar pole of a tubular capacitor.
Background
The circuit breaker for the intelligent power distribution network is key equipment of a new generation of power grid, wherein the ZW32 type pole-mounted circuit breaker is widely applied due to the characteristics of simple structure and no need of maintenance. The development and design of intelligent circuit breakers based on ZW32 type primary and secondary fusion technology are receiving wide attention in recent years, and the primary and secondary fusion gradually evolves from function fusion and equipment fusion. The integrated embedded pole post is formed by integrally pouring primary cut-off equipment (a vacuum circuit breaker), a current sensor (LPCT, and the like), a voltage sensor (capacitance voltage division, resistance voltage division, and the like), energy acquisition equipment and the like to replace a conventional electromagnetic transformer with large volume and weight and an electromagnetic power acquisition PT, is a key technology for realizing primary and secondary fusion, and has great advantages in engineering application, cost control, reliability and the like. The invention provides a deep fusion solid-sealed polar pole based on a design scheme of a circular tube-shaped capacitor.
Patent publication No. CN106298313B discloses a conventional non-fused pole-mounted circuit breaker. It can be seen that the restriction condition of the primary and secondary depth device fusion is the contradiction between the structure of the column switch and the mismatch of the number and shape of the sensors needing to be fused. For example, to meet the requirement of intellectualization, the single-phase pole-mounted switch fusion device at least comprises 2 groups of energy-taking devices, one group of current measuring devices and 2 groups of voltage measuring devices; this is to the pole-mounted circuit breaker that the volume originally has been very compact, and the difficulty is self-evident, and patent publication No. CN210091973U discloses a fused pole-mounted circuit breaker, and it adopts rectangular film electric capacity, succeeds with current sensor, integrally poured voltage sensor, two get electric condenser through the optimal design, still is difficult to satisfy the demand of all sensors, though can further improve the degree of fusion through increasing the electric capacity, but too much sensor will make the volume weight of utmost point post huge, the manufacturing and construction degree of difficulty increase by a wide margin, lose the meaning of fusing, still can cause the decline of casting shaping yield and reliability. Publication No. CN 110136958A also discloses a high-voltage capacitor, which also has similar problems in the face of a deep fusion case in which multiple sets of sensors are arranged.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the solid-sealed polar pole of the tubular capacitor according to the L-shaped cylinder structure of the primary loop of the circuit breaker on the pole, which has the advantages of simple structure, reasonable design, small overall dimension, easy pouring in the solid-sealed polar pole and full utilization of the cylindrical structure of the circuit breaker on the pole, thereby effectively utilizing the space, having high insulation reliability and high primary and secondary fusion degree.
In order to achieve the above purpose, the solution of the invention is:
an embedded pole of a tubular capacitor comprises an embedded pole epoxy casting body, a soft connection structure and a sensor assembly sealed in the casting body;
the solid-sealed polar pole epoxy casting body comprises an integrally formed epoxy shell, a vacuum circuit breaker and a transverse outgoing line conductor, wherein a moving contact of the vacuum circuit breaker is connected with the transverse outgoing line conductor through a flexible connection structure;
the sensor assembly comprises a tubular upper energy-taking capacitor, a tubular upper sequence measuring capacitor, a tubular lower energy-taking capacitor, a tubular zero sequence measuring capacitor and an annular current measuring coil, wherein the upper energy-taking capacitor and the upper sequence measuring capacitor are concentrically arranged outside a vertical outgoing conductor of the vacuum circuit breaker, and the lower sequence measuring capacitor, the lower energy-taking capacitor, the zero sequence measuring capacitor and the current measuring coil are concentrically arranged outside a horizontal outgoing conductor.
Further: the upper energy-taking capacitor and the lower energy-taking capacitor are ceramic capacitors with tubular structures, and metal films are plated on the inner cylindrical surface and the outer cylindrical surface of each capacitor to serve as electrodes; the inner diameter of the upper energy-taking capacitor is larger than the outer diameter of a vertical outgoing line conductor of the vacuum circuit breaker and is embedded on the vertical outgoing line conductor of the vacuum circuit breaker, and the inner diameter of the lower energy-taking capacitor is larger than the outer diameter of a horizontal outgoing line conductor and is embedded on the horizontal outgoing line conductor.
Further: the upper phase sequence measurement capacitor and the lower phase sequence measurement capacitor are ceramic capacitors with tubular structures, and metal films are plated on the inner cylindrical surface and the outer cylindrical surface of each ceramic capacitor to serve as electrodes; the inner diameter of the upper phase sequence measuring capacitor is larger than the outer diameter of a vertical outgoing line conductor of the vacuum circuit breaker and is embedded on the outgoing line conductor of the vacuum circuit breaker, and the inner diameter of the lower phase sequence measuring capacitor is larger than the outer diameter of a horizontal outgoing line conductor and is embedded on the horizontal outgoing line conductor.
Further: the zero sequence measurement capacitor is a ceramic capacitor with a tubular structure, and metal films are plated on the inner cylindrical surface and the outer cylindrical surface of the ceramic capacitor to serve as electrodes; the inner diameter of the zero sequence measurement capacitor is larger than the outer diameter of the transverse outgoing line conductor, and the zero sequence measurement capacitor is nested on the transverse outgoing line conductor.
Further: the current measuring coil is of a tubular structure, is coaxially arranged with the lower energy-taking capacitor and the transverse outgoing conductor in the epoxy casting body of the solid-sealed polar pole, and is positioned outside the lower energy-taking capacitor.
Further: the solid-sealed polar pole epoxy casting body is formed by one-time casting of oxygen of the outer tube of a user, and an integrated umbrella skirt for increasing creepage distance is arranged on the surface of the solid-sealed polar pole epoxy casting body.
Advantageous effects
According to the structure of the L-shaped cylinder of the primary loop of the pole-mounted circuit breaker, the appearance of the part to be fused is optimized, and the space is more reasonably utilized; the compatible cylindrical shape and structure effectively reduce the size of the solid-sealed polar pole cast by oxygen, and the shape of the solid-sealed polar pole tends to be regular, thereby being beneficial to casting molding. The coaxial structure enables the electric field structure in the embedded pole to be more uniform in voltage, so that more excellent insulation tolerance is obtained, and the safety margin is improved; the circular tube-shaped capacitor is formed by sintering high-pressure ceramic capacitor materials at high temperature, has good temperature applicability, and does not contain materials which are easy to combust and explode, such as oil, gas and the like.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the present invention with upper phase-sequence measurement capacitors configured by default, leaving only the lower phase-sequence measurement capacitors;
FIG. 3 is a schematic diagram of the present invention with the lower phase sequence measurement capacitor configured by default, leaving only the upper phase sequence measurement capacitor;
wherein:
the device comprises a solid-sealed pole epoxy pouring shell 1, an upper energy-taking capacitor 2, an upper phase sequence measuring capacitor 3, a vacuum circuit breaker 4, a flexible connecting conductor 5, a lower energy-taking capacitor 6, a current measuring coil 7, a zero sequence measuring capacitor 8, a lower phase sequence measuring capacitor 9 and a transverse outgoing conductor 10.
Detailed Description
The technical solution and the advantages of the present invention will be described in detail with reference to the accompanying drawings.
The invention relates to a solid-sealed polar pole of a tubular capacitor, which is characterized in that an energy-taking capacitor, a phase sequence measuring capacitor and a zero sequence measuring capacitor are designed into tubular shapes with the same inner diameter and outer diameter, are embedded and fixed on an inlet and outlet conductor in a coaxial mode, and are integrally formed and fixed by epoxy resin in a pouring mode. The lower energy-taking capacitor, the lower phase sequence measuring capacitor and the zero sequence measuring capacitor are coaxially embedded and fixed on a transverse outgoing conductor of the solid-sealed polar pole in a nesting mode and are integrally formed and fixed by epoxy resin in a pouring mode; the upper energy taking capacitor and the upper phase sequence measuring capacitor are embedded and fixed on a vertical outgoing line conductor of the vacuum circuit breaker in a coaxial mode and are integrally formed and fixed by epoxy resin in a pouring mode.
The current measuring coil is designed into a tubular structure, and is arranged in a cast insulating pole in a coaxial mode with the lower energy taking capacitor and the outgoing conductor.
The tubular capacitor is coaxially arranged, so that the space of the solid-sealed polar pole is more effectively utilized, and the size in the height direction is not increased. The material of the tubular capacitor is ceramic, and the height of the tubular capacitor is designed according to the requirement of capacitance.
Further, according to the functional requirements of the primary and secondary fusion, the number and positions of the sensor configurations are optimally configured, specifically, fig. 1 to 3 show a typical configuration of the present invention, in which fig. 1 shows that all current and voltage transformers, upper and lower energy-taking capacitors are configured; FIG. 2 is configured with upper phase-sequence measurement capacitors by default, leaving only lower phase-sequence measurement capacitors; figure 3 configures the lower phase-sequence measurement capacitors by default, leaving only the upper phase-sequence measurement capacitors. The design scheme of the tubular capacitor enables different configuration schemes to be realized on a set of die for fixedly sealing the pole, and the cost and the pouring process difficulty are favorably reduced.
The sensors are fixed in the solid-sealed polar pole in an integrated tube oxygen pouring mode, the outer surface of the tubular capacitor and the outer surface of the vacuum circuit breaker are coated with buffer layers for counteracting temperature stress and linear expansion stress in the pouring process and the using process, and the buffer layers can be metal nets, plates or other materials.
The outer surface and the inner cavity surface of the solid-sealed polar pole comprise a cylindrical surface of a vacuum circuit breaker and a transverse cylindrical surface of an outgoing conductor, and an umbrella skirt is additionally arranged to improve creepage distance and improve external insulation protection capability.
Advantageously, the upper and lower outlet end faces of the solid-sealed polar pole are designed to be of a conical structure, so that the thickness of the epoxy layer is further increased, and the insulating strength and the mechanical strength are improved.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modifications made on the basis of the technical scheme according to the technical idea of the present invention fall within the protection scope of the present invention.
Claims (6)
1. The utility model provides a solid utmost point post that seals of tubular capacitor which characterized in that: the sensor comprises an epoxy casting body of an embedded pole, a flexible connection structure and a sensor assembly sealed in the casting body;
the solid-sealed polar pole epoxy casting body comprises an integrally formed epoxy shell, a vacuum circuit breaker and a transverse outgoing line conductor, wherein a moving contact of the vacuum circuit breaker is connected with the transverse outgoing line conductor through a flexible connection structure;
the sensor assembly comprises a tubular upper energy-taking capacitor, a tubular upper phase sequence measuring capacitor, a tubular lower energy-taking capacitor, a tubular zero sequence measuring capacitor and an annular current measuring coil, wherein the upper energy-taking capacitor and the upper phase sequence measuring capacitor are concentrically arranged outside an outgoing line conductor of the vacuum circuit breaker, and the lower phase sequence measuring capacitor, the lower energy-taking capacitor, the zero sequence measuring capacitor and the current measuring coil are concentrically arranged outside a transverse outgoing line conductor.
2. The embedded pole of the tubular capacitor as claimed in claim 1, wherein: the upper energy-taking capacitor and the lower energy-taking capacitor are ceramic capacitors with tubular structures, and metal films are plated on the inner cylindrical surface and the outer cylindrical surface of each capacitor to serve as electrodes; the inner diameter of the upper energy-taking capacitor is larger than the outer diameter of a vertical outgoing line conductor of the vacuum circuit breaker and is embedded on the vertical outgoing line conductor of the vacuum circuit breaker, and the inner diameter of the lower energy-taking capacitor is larger than the outer diameter of a horizontal outgoing line conductor and is embedded on the horizontal outgoing line conductor.
3. The embedded pole of the tubular capacitor as claimed in claim 1, wherein: the upper phase sequence measurement capacitor and the lower phase sequence measurement capacitor are ceramic capacitors with tubular structures, and metal films are plated on the inner cylindrical surface and the outer cylindrical surface of each ceramic capacitor to serve as electrodes; the inner diameter of the upper phase sequence measuring capacitor is larger than the outer diameter of a vertical outgoing line conductor of the vacuum circuit breaker and is embedded on the vertical outgoing line conductor of the vacuum circuit breaker, and the inner diameter of the lower phase sequence measuring capacitor is larger than the outer diameter of a horizontal outgoing line conductor and is embedded on the horizontal outgoing line conductor.
4. The embedded pole for the pole-mounted circuit breaker according to claim 1, wherein: the zero sequence measurement capacitor is a ceramic capacitor with a tubular structure, and metal films are plated on the inner cylindrical surface and the outer cylindrical surface of the ceramic capacitor to serve as electrodes; the inner diameter of the zero sequence measurement capacitor is larger than the outer diameter of the transverse outgoing line conductor, and the zero sequence measurement capacitor is nested on the transverse outgoing line conductor.
5. The embedded pole for the pole-mounted circuit breaker according to claim 1, wherein: the current measuring coil is of a tubular structure, is coaxially arranged with the lower energy-taking capacitor and the transverse outgoing conductor in the epoxy casting body of the solid-sealed polar pole, and is positioned outside the lower energy-taking capacitor.
6. The embedded pole for the pole-mounted circuit breaker according to claim 1, wherein: the solid-sealed polar pole epoxy casting body is formed by one-time casting of oxygen of the outer tube of a user, and an integrated umbrella skirt for increasing creepage distance is arranged on the surface of the solid-sealed polar pole epoxy casting body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010800242.4A CN114078653B (en) | 2020-08-11 | 2020-08-11 | Solid-sealed polar pole of tubular capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010800242.4A CN114078653B (en) | 2020-08-11 | 2020-08-11 | Solid-sealed polar pole of tubular capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114078653A true CN114078653A (en) | 2022-02-22 |
| CN114078653B CN114078653B (en) | 2024-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010800242.4A Active CN114078653B (en) | 2020-08-11 | 2020-08-11 | Solid-sealed polar pole of tubular capacitor |
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| Country | Link |
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| CN (1) | CN114078653B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0944105A1 (en) * | 1998-03-19 | 1999-09-22 | Hitachi, Ltd. | Vacuum insulated switching apparatus |
| CN208111341U (en) * | 2018-01-10 | 2018-11-16 | 福建德普乐能源科技有限公司 | A kind of pole with current-taking function |
| CN110473739A (en) * | 2019-08-19 | 2019-11-19 | 陕西省地方电力(集团)有限公司延安供电分公司 | A kind of novel one or two fusions vacuum circuit breaker polar |
| CN209843596U (en) * | 2019-04-11 | 2019-12-24 | 数邦电力科技有限公司 | Integrated pole-mounted circuit breaker with primary and secondary integration |
| CN110646663A (en) * | 2019-10-28 | 2020-01-03 | 江苏靖江互感器股份有限公司 | Primary and secondary depth fusion combined sensor for vacuum circuit breaker |
| CN210489509U (en) * | 2019-04-11 | 2020-05-08 | 数邦电力科技有限公司 | Novel vacuum circuit breaker pole |
-
2020
- 2020-08-11 CN CN202010800242.4A patent/CN114078653B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0944105A1 (en) * | 1998-03-19 | 1999-09-22 | Hitachi, Ltd. | Vacuum insulated switching apparatus |
| CN208111341U (en) * | 2018-01-10 | 2018-11-16 | 福建德普乐能源科技有限公司 | A kind of pole with current-taking function |
| CN209843596U (en) * | 2019-04-11 | 2019-12-24 | 数邦电力科技有限公司 | Integrated pole-mounted circuit breaker with primary and secondary integration |
| CN210489509U (en) * | 2019-04-11 | 2020-05-08 | 数邦电力科技有限公司 | Novel vacuum circuit breaker pole |
| CN110473739A (en) * | 2019-08-19 | 2019-11-19 | 陕西省地方电力(集团)有限公司延安供电分公司 | A kind of novel one or two fusions vacuum circuit breaker polar |
| CN110646663A (en) * | 2019-10-28 | 2020-01-03 | 江苏靖江互感器股份有限公司 | Primary and secondary depth fusion combined sensor for vacuum circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN114078653B (en) | 2024-07-30 |
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