CN114823108B - Manufacturing method of voltage transformer with high-low voltage shielding device - Google Patents
Manufacturing method of voltage transformer with high-low voltage shielding device Download PDFInfo
- Publication number
- CN114823108B CN114823108B CN202210587985.7A CN202210587985A CN114823108B CN 114823108 B CN114823108 B CN 114823108B CN 202210587985 A CN202210587985 A CN 202210587985A CN 114823108 B CN114823108 B CN 114823108B
- Authority
- CN
- China
- Prior art keywords
- voltage
- primary
- fuse
- ring
- semi
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000012212 insulator Substances 0.000 claims abstract description 32
- 239000003973 paint Substances 0.000 claims abstract description 28
- 238000003466 welding Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000005684 electric field Effects 0.000 claims abstract description 11
- 239000003822 epoxy resin Substances 0.000 claims abstract description 6
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 6
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims abstract description 4
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910018503 SF6 Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 1
- 101000827703 Homo sapiens Polyphosphoinositide phosphatase Proteins 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 1
- 102100023591 Polyphosphoinositide phosphatase Human genes 0.000 description 1
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 1
- 101100233916 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) KAR5 gene Proteins 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/022—Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase AC
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Fuses (AREA)
Abstract
本发明公开了带有高低压屏蔽装置的电压互感器制作方法，包括带有高低压屏蔽装置的电压互感器制作方法，包括：将电压器身、一次导电杆焊网、熔断器连接保护环、一次高压均压环固定在模具中，采用环氧树脂浇注成一体式结构绝缘体；在绝缘体外表面均匀喷一层半导电漆形成低电屏，将一次高压屏蔽在绝缘体之内；半导电漆层外喷银白色氟碳漆进行防护，然后将绝缘体安装于底板上；在熔断器空腔外周设置一次导电杆焊网、熔断器连接保护环，将高压电场屏蔽在熔断器空腔之内；所述一次导电杆焊网、熔断器连接保护环除螺纹部位在外表面均匀喷砂后再喷一层半导电漆。通过上述方法制作的电压互感器，产品内外部电场均匀，局部放电量小，运行安全可靠。
The present invention discloses a method for manufacturing a voltage transformer with a high and low voltage shielding device, including: fixing the voltage body, a primary conductive rod welding mesh, a fuse connection protection ring, and a primary high voltage equalizing ring in a mold, and using epoxy resin to cast an integrated structural insulator; spraying a layer of semi-conductive paint evenly on the outer surface of the insulator to form a low-voltage screen, shielding the primary high voltage inside the insulator; spraying silver-white fluorocarbon paint on the semi-conductive paint layer for protection, and then installing the insulator on a bottom plate; arranging a primary conductive rod welding mesh and a fuse connection protection ring on the periphery of the fuse cavity, shielding the high voltage electric field inside the fuse cavity; the primary conductive rod welding mesh and the fuse connection protection ring are uniformly sandblasted on the outer surface except for the threaded part, and then sprayed with a layer of semi-conductive paint. The voltage transformer manufactured by the above method has a uniform internal and external electric field, a small amount of partial discharge, and safe and reliable operation.
Description
技术领域Technical Field
本发明涉及电力系统高压测量技术领域，具体涉及带有高低压屏蔽装置的电压互感器制作方法。The invention relates to the technical field of high voltage measurement of electric power systems, and in particular to a method for manufacturing a voltage transformer with a high and low voltage shielding device.
背景技术Background Art
电压互感器是电力系统或电气控制系统中测量电压、电能的装置，近几年，以SF6为绝缘介质的金属封闭开关设备(简称C-GIS充气柜)，因为其具有体积小、高度操作安全、适用于各种高海拔环境等优点，得到普遍推广运用，与之配套的电压互感器为近几年开发设计的干式绝缘带熔断器电压互感器。根据设计要求，高压熔断器与互感器一次端子进行电气连接，存在制作复杂，体积略大，更换部件多，与互感器共同装在开关柜中局部放电量大等问题，因此开关柜厂家及市场上特别需要一种能直接带熔断器且局放量小的电压互感器制作方法。Voltage transformer is a device for measuring voltage and electric energy in power system or electrical control system. In recent years, metal-enclosed switchgear (referred to as C-GIS inflatable cabinet) with SF6 as insulating medium has been widely promoted and applied because of its advantages of small size, high operational safety, and applicability to various high-altitude environments. The voltage transformer matched with it is a dry-type insulated voltage transformer with fuse developed and designed in recent years. According to the design requirements, the high-voltage fuse is electrically connected to the primary terminal of the transformer, which has the problems of complex manufacturing, slightly large size, many replacement parts, and large partial discharge when installed in the switch cabinet together with the transformer. Therefore, switch cabinet manufacturers and the market particularly need a method for manufacturing a voltage transformer that can directly carry a fuse and has small partial discharge.
发明内容Summary of the invention
本发明的目的在于，提供一种带有高低压屏蔽装置的电压互感器制作方法，其通过一次导电杆焊网和熔断器连接保护环形成高压屏蔽，通过一次高压均压环及绝缘体外喷的半导电漆层形成低压屏蔽；进而使产品高低压电场得到有效屏蔽。The object of the present invention is to provide a method for manufacturing a voltage transformer with a high and low voltage shielding device, which forms a high voltage shield through a primary conductive rod welding mesh and a fuse connecting protection ring, and forms a low voltage shield through a primary high voltage grading ring and a semi-conductive paint layer sprayed on the insulator; thereby effectively shielding the high and low voltage electric fields of the product.
为实现上述目的，本申请提出的技术方案为：带有高低压屏蔽装置的电压互感器制作方法，包括：To achieve the above-mentioned purpose, the technical solution proposed in this application is: a method for manufacturing a voltage transformer with a high and low voltage shielding device, comprising:
将电压器身、一次导电杆焊网、熔断器连接保护环、一次高压均压环固定在模具中，采用环氧树脂浇注成具有一次高压绝缘柱、二次接线台、熔断器空腔的一体式结构绝缘体；The voltage body, the primary conductive rod welding mesh, the fuse connection protection ring, and the primary high-voltage grading ring are fixed in the mold, and epoxy resin is used to cast an integrated structural insulator having a primary high-voltage insulating column, a secondary wiring platform, and a fuse cavity;
在绝缘体外表面均匀喷一层半导电漆形成低电屏，将一次高压屏蔽在绝缘体之内；半导电漆层外喷银白色氟碳漆进行防护，然后将绝缘体安装于底板上；A layer of semi-conductive paint is evenly sprayed on the outer surface of the insulator to form a low-voltage screen, shielding the primary high voltage inside the insulator; silver-white fluorocarbon paint is sprayed on the outside of the semi-conductive paint layer for protection, and then the insulator is installed on the bottom plate;
在熔断器空腔外周设置一次导电杆焊网、熔断器连接保护环，将高压电场屏蔽在熔断器空腔之内；A conductive rod welding net and a fuse connection protection ring are arranged on the periphery of the fuse cavity to shield the high voltage electric field within the fuse cavity;
将一次导电杆焊网内的一次熔断器屏蔽网与一次导电杆端盖通过点焊连接，再将一次导电杆端盖、一次导电杆连杆、一次导电杆通过螺纹依次连接，且一次导电杆位于一次高压均压环中；再将熔断器连接保护环的熔断器螺套和屏蔽环通过螺纹连接；The primary fuse shielding net in the primary conductive rod welding net is connected to the primary conductive rod end cover by spot welding, and then the primary conductive rod end cover, the primary conductive rod connecting rod and the primary conductive rod are connected in sequence by threads, and the primary conductive rod is located in the primary high-voltage equalizing ring; and then the fuse screw sleeve and the shielding ring of the fuse connection protection ring are connected by threads;
所述一次导电杆焊网、熔断器连接保护环除螺纹部位在外表面均匀喷砂后再喷一层半导电漆。The primary conductive rod welding mesh and the fuse connection protection ring are uniformly sandblasted on the outer surface except the threaded portion and then sprayed with a layer of semi-conductive paint.
进一步的，将一次熔断器屏蔽网放置于熔断器空腔外周，在熔断器空腔一端安装一次导电杆端盖，另一端安装与高压熔断器端部套接的屏蔽环。Furthermore, a primary fuse shielding net is placed on the periphery of the fuse cavity, a primary conductive rod end cover is installed at one end of the fuse cavity, and a shielding ring sleeved with the end of the high-voltage fuse is installed at the other end.
进一步的，一次高压绝缘柱设置在绝缘体上部，且位于熔断器空腔后侧竖直向上或水平向后方向；高压熔断器植入熔断器空腔后，电缆堵头插入与熔断器空腔连通的封堵腔中；在一次高压绝缘柱外周包裹电缆闷头。Furthermore, a primary high-voltage insulating column is arranged on the upper part of the insulator and is located vertically upward or horizontally backward on the rear side of the fuse cavity; after the high-voltage fuse is implanted in the fuse cavity, the cable plug is inserted into the sealing cavity connected to the fuse cavity; and the cable plug is wrapped around the outer periphery of the primary high-voltage insulating column.
进一步的，由环氧树脂浇注成的绝缘体为上下两端收紧中间凸起结构，熔断器空腔位于绝缘体上部呈圆筒形状。Furthermore, the insulator cast by epoxy resin is a structure with tightened upper and lower ends and a raised middle portion, and the fuse cavity is located at the upper portion of the insulator and is cylindrical in shape.
进一步的，所述一次导电杆焊网与熔断器连接保护环之间设有间隙，所述熔断器连接保护环与电压器身的一次高压端连接。Furthermore, a gap is provided between the primary conductive rod welding mesh and the fuse connection protection ring, and the fuse connection protection ring is connected to the primary high-voltage end of the voltage body.
更进一步的，所述绝缘体前后两侧安装吊环。Furthermore, the insulator is provided with lifting rings at both the front and rear sides.
更进一步的，所述半导电漆层与吊环固定用嵌装螺母端面、一次高压均压环用半圆头形嵌装螺母端面接触。Furthermore, the semi-conductive paint layer contacts the end face of the embedded nut for fixing the lifting ring and the end face of the semi-circular embedded nut for the primary high-voltage equalizing ring.
更进一步的，所述二次接线台位于熔断器空腔下方，二次接线台底部安装防水接头。Furthermore, the secondary wiring platform is located below the fuse cavity, and a waterproof joint is installed at the bottom of the secondary wiring platform.
作为更进一步的，所述一次高压绝缘柱根部通过紧固螺栓与方形安装板连接，并与外喷半导电漆层接触连通。As a further step, the root of the primary high-voltage insulating column is connected to the square mounting plate by means of fastening bolts, and is in contact and communication with the externally sprayed semi-conductive paint layer.
作为更进一步的，所述一次高压均压环中的三个半圆头形嵌装螺母，均匀焊在一个圆环上，在圆环及嵌装螺母外表面均匀喷砂后再喷涂半导电漆，所述圆环外周半叠一层半导电皱纹纸。As a further step, the three semi-circular head embedded nuts in the primary high-voltage equalizing ring are evenly welded on a circular ring, the outer surfaces of the circular ring and the embedded nuts are evenly sandblasted and then sprayed with semi-conductive paint, and a layer of semi-conductive corrugated paper is half-stacked on the outer periphery of the circular ring.
本发明采用的以上技术方案，具有的优点是：The above technical solution adopted by the present invention has the advantages of:
1、制作方便、容易实施：本申请一次高压端子采用一次导电杆焊网、熔断器螺套屏蔽环及一次高压均压环一体式浇注，高压熔断器封置在产品内部，整体结构简单，操作方便。1. Easy to manufacture and implement: The primary high-voltage terminal of this application adopts a primary conductive rod welding mesh, a fuse screw sleeve shielding ring and a primary high-voltage equalizing ring as an integrated casting, and the high-voltage fuse is sealed inside the product. The overall structure is simple and easy to operate.
2、带熔断器保护、可带电触摸：产品内部封置的高压熔断器，有效保证产品系统故障时不会发生烧毁，环氧树脂外层喷有半导电漆层低压接地屏蔽，采用电缆堵头和电缆闷头将高压密封隔离，产品表面可带电触摸，保证运行时人身安全。2. With fuse protection, can be touched with electricity: The high-voltage fuse sealed inside the product can effectively ensure that the product will not burn out when the system fails. The outer layer of epoxy resin is sprayed with a semi-conductive paint layer for low-voltage grounding shielding. Cable plugs and cable bulkheads are used to isolate the high voltage seal. The surface of the product can be touched with electricity to ensure personal safety during operation.
3、电场均匀、局部放电量小：一次高压熔断器放入熔断器空腔内，一次导电杆焊网、熔断器连接保护环及一次高压均压环将高低压电场完全屏蔽，产品内外部电场均匀，局部放电量小，运行安全可靠。3. Uniform electric field and small local discharge: The primary high-voltage fuse is placed in the fuse cavity, and the primary conductive rod welding mesh, fuse connection protection ring and primary high-voltage equalizing ring completely shield the high and low voltage electric fields. The internal and external electric fields of the product are uniform, the local discharge is small, and the operation is safe and reliable.
通过上述方法制作的电压互感器具有体积小、安装灵活、维护周期长、运用范围广、操作方便等优点。The voltage transformer manufactured by the above method has the advantages of small size, flexible installation, long maintenance cycle, wide application range and convenient operation.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为带有高低压屏蔽装置的电压互感器的内部结构示意图；FIG1 is a schematic diagram of the internal structure of a voltage transformer with a high and low voltage shielding device;
图2为带有高低压屏蔽装置的电压互感器的主视图；FIG2 is a front view of a voltage transformer with a high and low voltage shielding device;
图3为带有高低压屏蔽装置的电压互感器的侧视图；FIG3 is a side view of a voltage transformer with a high and low voltage shielding device;
图4为带有高低压屏蔽装置的电压互感器的俯视图；FIG4 is a top view of a voltage transformer with a high and low voltage shielding device;
图5为一次高压均压环结构图；Figure 5 is a structural diagram of a primary high-pressure equalizing ring;
图6为熔断器连接保护环结构图；FIG6 is a structural diagram of a fuse connection protection ring;
图7为一次导电杆焊网结构图。Figure 7 is a structural diagram of a primary conductive rod welding mesh.
其中：1、电压器身；2、一次导电杆焊网；3、熔断器连接保护环；4、一次高压绝缘柱；5、一次高压均压环；6、熔断器空腔；7、高压熔断器；8、二次接线台；9、底板；10、绝缘体；11、防水接头；12、吊环；13、方形安装板；14、半圆头形嵌装螺母；15、圆环；16、熔断器螺套；17、屏蔽环；18、一次熔断器屏蔽网；19、一次导电杆端盖；20、一次导电杆连杆；21、一次导电杆；22、电缆闷头；23、电缆堵头。Among them: 1. Voltage body; 2. Primary conductive rod welding mesh; 3. Fuse connection protection ring; 4. Primary high-voltage insulating column; 5. Primary high-voltage equalizing ring; 6. Fuse cavity; 7. High-voltage fuse; 8. Secondary wiring board; 9. Bottom plate; 10. Insulator; 11. Waterproof joint; 12. Lifting ring; 13. Square mounting plate; 14. Semi-circular head embedded nut; 15. Round ring; 16. Fuse screw sleeve; 17. Shielding ring; 18. Primary fuse shielding mesh; 19. Primary conductive rod end cover; 20. Primary conductive rod connecting rod; 21. Primary conductive rod; 22. Cable bulkhead; 23. Cable plug.
具体实施方式DETAILED DESCRIPTION
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请，即所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以各种不同的配置来布置和设计。In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application, that is, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
因此，以下对在附图中提供的本申请的实施例的详细描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施例。基于本申请的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本申请保护的范围。Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
实施例1Example 1
如图1-7所示，本发明通过高压屏蔽环、屏蔽网与半导电漆组成的高低压屏蔽结构，将高压熔断器绝缘密封屏蔽在产品内部，解决现有带熔断器电压互感器产品局部放电量大的问题，适用于复杂环境各种电压等级开关柜中；本实施例提供通过上述制作方法获取的电压互感器，包括产品二次绕组与一次绕组同心绕在一个绝缘骨架上后套装在铁心柱上，经过绝缘及缓冲包扎后形成电压器身，该电压器身内置在绝缘体中；所述绝缘体上加工有向外凸起的一次高压绝缘柱和二次接线台，在绝缘体内开有熔断器空腔，该熔断器空腔外周通过一次导电杆焊网、熔断器连接保护环进行屏蔽包封；所述一次导电杆焊网包括一次熔断器屏蔽网、一次导电杆端盖、一次导电杆连杆、一次导电杆，所述一次熔断器屏蔽网与一次导电杆端盖一端通过点焊连接，该一次导电杆端盖另一端与一次导电杆之间螺纹连接有一次导电杆连杆，且在连接处通过锡焊接，使电气连接更加可靠；所述一次导电杆位于一次高压均压环中，电场分布更加均匀，产品局部放电量小；所述熔断器连接保护环包括螺纹连接的熔断器螺套和屏蔽环。As shown in Figures 1-7, the present invention uses a high-voltage shielding ring, a shielding net and a semi-conductive paint to form a high-voltage shielding structure, which insulates and seals the high-voltage fuse inside the product, thereby solving the problem of large local discharge of existing voltage transformer products with fuses, and is suitable for switch cabinets of various voltage levels in complex environments; this embodiment provides a voltage transformer obtained by the above-mentioned manufacturing method, including a product secondary winding and a primary winding concentrically wound on an insulating skeleton and then sleeved on an iron core column, and a voltage body is formed after insulation and buffering wrapping, and the voltage body is built in an insulator; the insulator is processed with a primary high-voltage insulating column and a secondary wiring platform protruding outward, and a fuse is opened in the insulator The fuse cavity is shielded and enclosed by a primary conductive rod welding net and a fuse connection protection ring; the primary conductive rod welding net includes a primary fuse shielding net, a primary conductive rod end cover, a primary conductive rod connecting rod, and a primary conductive rod; the primary fuse shielding net is connected to one end of the primary conductive rod end cover by spot welding, and a primary conductive rod connecting rod is threadedly connected between the other end of the primary conductive rod end cover and the primary conductive rod, and tin welding is performed at the connection to make the electrical connection more reliable; the primary conductive rod is located in a primary high-voltage grading ring, the electric field distribution is more uniform, and the local discharge of the product is small; the fuse connection protection ring includes a threaded fuse screw sleeve and a shielding ring.
所述一次高压绝缘柱4位于绝缘体10上部，且位于熔断器空腔6后侧竖直向上或水平向后方向，保证一次高压足够的绝缘距离。The primary high voltage insulating column 4 is located on the upper part of the insulator 10 and is located vertically upward or horizontally backward at the rear side of the fuse cavity 6 to ensure sufficient insulation distance of the primary high voltage.
所述绝缘体10为上下两端收紧中间凸起结构，熔断器空腔位于绝缘体10上部呈圆筒形状，保证绝缘距离均匀。The insulator 10 is a structure with tightened upper and lower ends and a raised middle portion. The fuse cavity is located at the upper portion of the insulator 10 and is cylindrical in shape, thereby ensuring uniform insulation distance.
所述一次导电杆焊网2与熔断器连接保护环3表面除螺纹部位喷砂后再喷一层半导电漆，熔断器连接保护环与电压器身的一次高压端连接，一次导电杆焊网2与熔断器连接保护环3两者之间设有足间隙，绝缘稳定屏蔽效果更佳。The surfaces of the primary conductive rod welding mesh 2 and the fuse connection protection ring 3 are sandblasted except for the threaded parts and then sprayed with a layer of semi-conductive paint. The fuse connection protection ring is connected to the primary high-voltage end of the voltage body. A sufficient gap is provided between the primary conductive rod welding mesh 2 and the fuse connection protection ring 3, so that the insulation stability and shielding effect are better.
所述绝缘体外部银白色氟碳漆防护与树脂主体之间设有半导电漆层，半导电漆层与吊环12固定用嵌装螺母端面及一次高压均压环5用半圆头形嵌装螺母14端面接触，保证低压电位均衡，屏蔽效果更佳。A semi-conductive paint layer is provided between the silver-white fluorocarbon paint protection on the outside of the insulator and the resin body. The semi-conductive paint layer contacts the end face of the embedded nut 12 for fixing the hanging ring 12 and the end face of the semi-circular embedded nut 14 for the primary high-voltage equalizing ring 5, ensuring low-voltage potential balance and better shielding effect.
所述绝缘体前后两侧设有吊环12，方便产品搬运安装。The insulator is provided with lifting rings 12 at the front and rear sides to facilitate product transportation and installation.
所述二次接线台位于熔断器空腔下方，二次接线台底部设置有防水接头11，方便用户二次接线，二次端子密封可靠。The secondary wiring platform is located below the fuse cavity, and a waterproof connector 11 is provided at the bottom of the secondary wiring platform to facilitate secondary wiring for users, and the secondary terminals are reliably sealed.
所述一次高压绝缘柱4根部设有方形安装板13，一次高压均压环5通过螺栓紧固与安装板13连接，并与外喷半导电漆层接触连通，保证接地更加可靠。A square mounting plate 13 is provided at the root of the primary high-voltage insulating column 4, and the primary high-voltage grading ring 5 is connected to the mounting plate 13 by bolts and is in contact with and connected to the externally sprayed semi-conductive paint layer to ensure more reliable grounding.
所述一次高压均压环5包括三个半圆头形嵌装螺母，其均匀焊在一个圆环上，在圆环及嵌装螺母外表面均匀喷砂后再喷涂半导电漆，所述圆环外周半叠一层半导电皱纹纸，屏蔽效果更佳。The primary high-voltage equalizing ring 5 includes three semi-circular head embedded nuts, which are evenly welded on a circular ring. The outer surfaces of the circular ring and the embedded nuts are evenly sandblasted and then sprayed with semi-conductive paint. A layer of semi-conductive corrugated paper is half-stacked on the outer periphery of the circular ring to achieve better shielding effect.
所述高压熔断器7植入熔断器空腔，端部的电缆堵头23通过螺钉紧固，一次高压绝缘柱4端部的电缆闷头22通过螺钉紧固，将高压密封隔离，保证运行时人身安全。The high-voltage fuse 7 is implanted in the fuse cavity, the cable plug 23 at the end is fastened by screws, and the cable plug 22 at the end of the primary high-voltage insulating column 4 is fastened by screws to isolate the high voltage seal and ensure personal safety during operation.
使用时，一次高压绝缘柱相配合的电缆闷头22实现与高压部件机械连接,电缆闷头端部固定有圆柱金属端子及可压缩的弹簧实现与气室内的高压部分进行电气接触,利用固定于绝缘体10一次高压端根部的方形安装板13及底板9将本申请电压互感器固定安装后再进行二次电缆的连接,开关柜内其余高压部件安装完毕后,本装置安装完成。When in use, the cable bulkhead 22 matched with the primary high-voltage insulating column realizes mechanical connection with the high-voltage components. The end of the cable bulkhead is fixed with a cylindrical metal terminal and a compressible spring to realize electrical contact with the high-voltage part in the air chamber. The voltage transformer of this application is fixedly installed using the square mounting plate 13 and the bottom plate 9 fixed to the root of the primary high-voltage end of the insulator 10, and then the secondary cable is connected. After the installation of the remaining high-voltage components in the switch cabinet is completed, the installation of this device is completed.
本发明一种带有高低压屏蔽装置的电压互感器制作方法，利用电磁转换原理，使二次电压能准确地反映一次电压的变化情况，作为电压测量及继电保护使用，采用一次导电杆焊网2、熔断器连接保护环3组成高压屏蔽，一次高压均压环5及绝缘体10外喷半导电漆层形成低压屏蔽，共同作用使产品高低压电场得到有效屏蔽，电场分布均匀、局放量小，适用于各种六氟化硫充气式开关柜中，实现开关柜简约化、小型化发展。The invention discloses a method for manufacturing a voltage transformer with a high-low voltage shielding device. The electromagnetic conversion principle is used to enable the secondary voltage to accurately reflect the change of the primary voltage. The device is used for voltage measurement and relay protection. A primary conductive rod welding mesh 2 and a fuse connection protection ring 3 are used to form a high-voltage shield. A primary high-voltage grading ring 5 and an insulator 10 are sprayed with a semi-conductive paint layer to form a low-voltage shield. The high and low voltage electric fields of the product are effectively shielded by the combined effect. The electric field is evenly distributed and the partial discharge is small. The device is suitable for various sulfur hexafluoride inflatable switch cabinets, and the switch cabinets are simplified and miniaturized.
前述对本发明的具体示例性实施方案的描述是为了说明和例证的目的。这些描述并非想将本发明限定为所公开的精确形式，并且很显然，根据上述教导，可以进行很多改变和变化。对示例性实施例进行选择和描述的目的在于解释本发明的特定原理及其实际应用，从而使得本领域的技术人员能够实现并利用本发明的各种不同的示例性实施方案以及各种不同的选择和改变。本发明的范围意在由权利要求书及其等同形式所限定。The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210587985.7A CN114823108B (en) | 2022-05-27 | 2022-05-27 | Manufacturing method of voltage transformer with high-low voltage shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210587985.7A CN114823108B (en) | 2022-05-27 | 2022-05-27 | Manufacturing method of voltage transformer with high-low voltage shielding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114823108A CN114823108A (en) | 2022-07-29 |
| CN114823108B true CN114823108B (en) | 2024-10-29 |
Family
ID=82519037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210587985.7A Active CN114823108B (en) | 2022-05-27 | 2022-05-27 | Manufacturing method of voltage transformer with high-low voltage shielding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114823108B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116153642B (en) * | 2023-01-17 | 2026-02-27 | 大连北方互感器集团有限公司 | A method for manufacturing voltage transformers that facilitates assembly and maintenance |
| CN116798758B (en) * | 2023-08-08 | 2025-09-02 | 大连北方互感器集团有限公司 | Indoor three-phase split voltage transformer with fuse |
| CN119517578B (en) * | 2024-10-12 | 2025-07-08 | 大连第一互感器有限责任公司 | Fuse front-insertion three-phase integrated voltage transformer and processing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217444215U (en) * | 2022-05-27 | 2022-09-16 | 大连北方互感器集团有限公司 | Indoor single-phase voltage transformer with fuse |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201927472U (en) * | 2010-12-30 | 2011-08-10 | 大连北方互感器集团有限公司 | Voltage transformer with fuse for gas insulated cabinet |
| CA2832898A1 (en) * | 2011-04-14 | 2012-10-18 | Abb Schweiz Ag | Electrostatic shield for a transformer |
| CN103295752A (en) * | 2013-06-04 | 2013-09-11 | 衡阳一互电气有限公司 | Voltage transformer with fuse protection function used in C-GIS (cubicle gas insulated switchgear) of rail transit |
| CN207966701U (en) * | 2018-04-03 | 2018-10-12 | 李政 | One kind being suitable for the on high-tension side elbow-type plug of voltage transformer |
| CN208848736U (en) * | 2018-11-02 | 2019-05-10 | 江苏靖江互感器股份有限公司 | A self-recovery voltage transformer after overload circuit breaker |
| CN109346302B (en) * | 2018-12-03 | 2023-08-08 | 大连北方互感器集团有限公司 | Voltage transformer with high-voltage shielding and low-voltage shielding |
| CN211858385U (en) * | 2020-04-24 | 2020-11-03 | 大连北方互感器集团有限公司 | Three-phase voltage transformer with fuse for handcart |
| CN112382483A (en) * | 2020-11-12 | 2021-02-19 | 湖北大二互科技股份有限公司 | 35KV metal outer-armored shielding type voltage transformer |
-
2022
- 2022-05-27 CN CN202210587985.7A patent/CN114823108B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217444215U (en) * | 2022-05-27 | 2022-09-16 | 大连北方互感器集团有限公司 | Indoor single-phase voltage transformer with fuse |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114823108A (en) | 2022-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114823108B (en) | Manufacturing method of voltage transformer with high-low voltage shielding device | |
| CN112185752B (en) | A solid-sealed pole | |
| CN204905019U (en) | Plug -in transformer bushing | |
| CN217444215U (en) | Indoor single-phase voltage transformer with fuse | |
| CN101458273B (en) | Sensor for measuring very fast transient overvoltage in GIS | |
| CN114843099B (en) | Assembly method of C-type three-phase voltage transformer | |
| CN205050651U (en) | High -tension bushing and isolated bus | |
| CN218826610U (en) | Voltage transformer | |
| CN106469594B (en) | Bushing shell for transformer | |
| CN205753131U (en) | A kind of outdoor compact type intelligent substation | |
| CN201556523U (en) | High voltage dry type current transformer with protecting gap | |
| CN108172455B (en) | An isolating switch pole for electrified locomotives | |
| CN214228770U (en) | Plugging type contact box for 40.5kV high-voltage switch cabinet | |
| CN219085783U (en) | Disposable switchable resonance-eliminating voltage transformer | |
| CN219085793U (en) | Single-phase all-insulated voltage transformer in harmonic elimination user | |
| CN204720940U (en) | A kind of elbow cable joint | |
| CN209675080U (en) | A kind of Transformer Bushing Tap earthing or grounding means | |
| CN116153642B (en) | A method for manufacturing voltage transformers that facilitates assembly and maintenance | |
| CN205657374U (en) | Solid insulation boundary switch cabinet | |
| CN212364396U (en) | Novel combined metering mutual inductor | |
| CN214705700U (en) | 35KV metal outer-armored shielding type voltage transformer | |
| CN222462583U (en) | Take fuse to connect ground type voltage transformer | |
| CN101211690B (en) | +/-500kV direct current mutual inductor | |
| CN201060735Y (en) | Positive and negative 500kV DC current sensor | |
| CN209282773U (en) | TG series gauze screen built-in type wall bushing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |