CN111180256A - Insulating pull rod for 1100kV extra-high voltage circuit breaker and manufacturing method - Google Patents
Insulating pull rod for 1100kV extra-high voltage circuit breaker and manufacturing method Download PDFInfo
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- CN111180256A CN111180256A CN202010151609.4A CN202010151609A CN111180256A CN 111180256 A CN111180256 A CN 111180256A CN 202010151609 A CN202010151609 A CN 202010151609A CN 111180256 A CN111180256 A CN 111180256A
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- insulating tube
- metal joint
- cloth
- insulating
- pull rod
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 239000004744 fabric Substances 0.000 claims description 43
- 229920000728 polyester Polymers 0.000 claims description 11
- 239000003365 glass fiber Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 239000003822 epoxy resin Substances 0.000 claims description 9
- 229920000647 polyepoxide Polymers 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 229920004933 Terylene® Polymers 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 230000007547 defect Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000008676 import Effects 0.000 abstract description 4
- 238000010292 electrical insulation Methods 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 4
- 229920006231 aramid fiber Polymers 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing 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
- 238000005470 impregnation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000006467 substitution reaction 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
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
-
- 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
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H33/34—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator hydraulic
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Bodies (AREA)
Abstract
本发明涉及一种绝缘拉杆，包括绝缘管，在绝缘管的两端分别连接第一金属接头和第二金属接头，第一金属接头包括与液压机构输出杆连接的第一连接端和与绝缘管连接的第一装配端，第一连接端上设有连接液压机构输出杆的销孔，第一装配端与绝缘管的内壁螺纹连接；第二金属接头包括与动触头连接的第二连接端和与绝缘管连接的第二装配端，第二连接端上设有连接动触头的销孔，第二装配端与绝缘管的内壁螺纹连接。产品内部组织结构致密，外观颜色均一，通透性高，电气绝缘性能和理化性能可完全满足1100kV大操作功、大电流特高压开关断路器使用要求。同时，产品制造成本相较进口低60％以上，生产周期可控制在15天以内，远低于4个月的采购周期。
The invention relates to an insulating pull rod, comprising an insulating tube, a first metal joint and a second metal joint are respectively connected at both ends of the insulating tube, and the first metal joint comprises a first connecting end connected with an output rod of a hydraulic mechanism and a first connecting end connected with the insulating tube The first assembly end of the connection is provided with a pin hole for connecting the output rod of the hydraulic mechanism, and the first assembly end is threadedly connected with the inner wall of the insulating tube; the second metal joint includes a second connection end connected with the movable contact and a second assembling end connected with the insulating tube, the second connecting end is provided with a pin hole for connecting the movable contact, and the second assembling end is threadedly connected with the inner wall of the insulating tube. The internal structure of the product is dense, the appearance and color are uniform, and the permeability is high. The electrical insulation performance and physical and chemical properties can fully meet the requirements of 1100kV large operating power and high current UHV switch circuit breakers. At the same time, the manufacturing cost of products is more than 60% lower than that of imports, and the production cycle can be controlled within 15 days, far less than the 4-month procurement cycle.
Description
Technical Field
The invention relates to the technical field of gas-insulated metal-enclosed switchgear, in particular to an insulated pull rod for an 1100kV extra-high voltage circuit breaker and a manufacturing method thereof.
Background
The insulating pull rod is used as a core part of the high-voltage switch, is applied to GIS circuit breakers, isolating switches, grounding switches, open circuit breakers and tank type circuit breakers, plays a key role in the service performance and service life of the high-voltage switch, needs to have reliable electrical performance and mechanical performance, and can bear high voltage, large load, strong airflow blowing effect and the like. Along with the improvement of the voltage grade of the high-voltage switch, the requirement on the electrical property and the mechanical property of the insulating pull rod is higher, 1100kV is used as the highest engineering application voltage grade of the domestic high-voltage switch circuit breaker at present, and the insulating pull rod for the arc extinguish chamber of the circuit breaker is provided with extremely high mechanical and electrical strength requirements. The insulation pull rod is required to bear the brake-separating operation work of 40kJ in the operation working condition, the breaking tensile resistance is not less than 300kN, and the mechanical life is required to be more than 10000 times; the electrical property requires that the power frequency withstand voltage 1100kV has no flashover breakdown problem, the partial discharge under 1.2 times of phase voltage is less than 3pC, and the 2400kV lightning impulse voltage has no flashover breakdown problem for +/-15 times.
Because of the severe use requirements of 1100kV high-operation and high-current ultra-high voltage switch breakers on the insulating pull rod, the insulating pull rod used in the same industry at present generally depends on import, and the imported insulating pull rod is mainly made of aramid fiber cloth as a reinforcing material. At present, the production process of the aramid fiber insulation pipe in China is immature, the aramid fiber insulation pipe which depends on import is expensive, the production and transportation period is extremely long, and the problems of high manufacturing cost and long manufacturing period of a corresponding high-voltage switch are further caused.
Disclosure of Invention
The invention provides an insulated pull rod for an 1100kV extra-high voltage circuit breaker and a manufacturing method thereof, aiming at the defects of the prior art.
The invention is realized through the following technical scheme, and a first aspect of the invention provides an insulating pull rod which comprises an insulating tube, wherein two ends of the insulating tube are respectively connected with a first metal joint and a second metal joint, the first metal joint comprises a first connecting end connected with an output rod of a hydraulic mechanism and a first assembling end connected with the insulating tube, the first connecting end is provided with a pin hole connected with the output rod of the hydraulic mechanism, and the first assembling end is in threaded connection with the inner wall of the insulating tube; the second metal joint comprises a second connecting end connected with the moving contact and a second assembling end connected with the insulating tube, the second connecting end is provided with a pin hole connected with the moving contact, and the second assembling end is in threaded connection with the inner wall of the insulating tube; the insulating tube comprises an inner resin layer, an inner polyester cloth layer, a middle glass fiber cloth layer, an outer polyester cloth layer and an outer resin layer which are coated layer by layer from inside to outside.
Preferably, two ends of the insulating tube are respectively connected with a shielding support ring, the shielding support rings are sleeved on the outer wall of the insulating tube, the shielding support ring at one end is connected with the first metal joint, and the shielding support ring at the other end is connected with the second metal joint.
Preferably, the material of the shield support ring is aluminum alloy, and the material of the first metal joint and the second metal joint is aluminum alloy.
In a second aspect of the present invention, a method for manufacturing an insulating pull rod is provided, which includes the following steps:
(1) pretreatment of raw materials: cutting glass fiber cloth and polyester fabric according to a ratio of 10:1, drying, and mixing epoxy resin, curing agent and accelerator uniformly under a vacuum state;
(2) cloth blank winding: winding the terylene cloth, the glass fiber cloth and the terylene cloth on a metal core rod in sequence, and rolling the wound cloth by using a roller press;
(3) die filling: placing the cloth blank after winding into a mould for preheating and drying treatment, and removing water;
(4) pouring: injecting the epoxy resin mixture into the mold by using dynamic and static composite automatic pouring equipment under the condition that the mold keeps a vacuum state, so that the resin and the fabric blank are uniformly mixed;
(5) curing and forming: solidifying the poured cloth and the epoxy resin mixture into a whole;
(6) and (3) detecting the lamp light of the insulating tube: the solidified and formed insulating tube uses a fluorescent tube to transmit and detect whether the inside of the insulating tube has defects;
(7) bonding and assembling: bonding the insulating tube with the first metal joint and the second metal joint by using a curing adhesive, and curing;
(8) testing and detecting: x-ray flaw detection is carried out on the insulated pull rod to detect whether the bonding area is flawless, a tensile and torsion resistance test is carried out to examine the mechanical strength of the insulated pull rod, and routine power frequency voltage withstanding detection is carried out to detect the reliability of the electrical property.
In a third aspect of the invention, an insulating pull rod is provided for use in an 1100kv ultra-high voltage switching breaker.
The invention has the beneficial effects that:
the 1100kV insulation pull rod is manufactured by adopting advanced dynamic and static composite automatic pouring equipment and an autonomously developed vacuum pressure impregnation process, the product has a compact internal organization structure, uniform appearance color and high permeability, and the electrical insulation performance and the physical and chemical performance can completely meet the use requirements of 1100kV high-operation power and high-current ultrahigh-voltage switch circuit breakers. Meanwhile, compared with import, the manufacturing cost of the product is reduced by more than 60%, and the production period can be controlled within 15 days and is far lower than the purchase period of 4 months.
Drawings
FIG. 1 is a schematic view of an insulated pull rod according to the present invention;
FIG. 2 is a schematic cross-sectional view of an insulating tube according to the present invention;
shown in the figure:
1. the device comprises a first connecting end, a second connecting end, a first assembling end, a second assembling end, a shielding support ring, a first connecting end, a second connecting end, a shielding support ring, a second connecting end, an insulating pipe, a second connecting end, a first assembling end, a second assembling end, a middle glass fiber cloth layer, a second assembling end, an inner polyester cloth layer, a middle polyester cloth layer, an outer resin layer and.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
An insulating pull rod comprises an insulating tube 3, wherein a first metal joint and a second metal joint are respectively connected to two ends of the insulating tube 3, the first metal joint comprises a first connecting end 1 connected with an output rod of a hydraulic mechanism and a first assembling end 6 connected with the insulating tube 3, a pin hole connected with the output rod of the hydraulic mechanism is formed in the first connecting end 1, and the first assembling end 6 is in threaded connection with the inner wall of the insulating tube 3. The second metal joint comprises a second connecting end 5 connected with the moving contact and a second assembling end 7 connected with the insulating tube 3, the second connecting end 5 is provided with a pin hole connected with the moving contact, and the second assembling end 7 is in threaded connection with the inner wall of the insulating tube 3.
The two ends of the insulating tube 3 are respectively connected with a shielding support ring 2, the shielding support ring 2 is sleeved on the outer wall of the insulating tube 3, the shielding support ring 2 at one end is connected with a first metal joint, and the shielding support ring 2 at the other end is connected with a second metal joint. In this embodiment, the shielding support ring 2 is made of aluminum alloy, and the first metal joint and the second metal joint are made of aluminum alloy. The shielding support ring 2 can play a role in improving mechanical strength and optimizing electric field distribution.
The insulating tube 3 comprises an inner resin layer 4, an inner polyester cloth layer 8, a middle glass fiber cloth layer 9, an outer polyester cloth layer 10 and an outer resin layer 11 which are coated layer by layer from inside to outside.
The manufacturing method of the insulating pull rod comprises the following steps:
(1) pretreatment of raw materials: cutting glass fiber cloth and polyester fabric according to a ratio of 10:1, drying, and mixing epoxy resin, curing agent and accelerator uniformly under a vacuum state;
(2) cloth blank winding: winding the terylene cloth, the glass fiber cloth and the terylene cloth on a metal core rod in sequence, and rolling the wound cloth by using a roller press;
(3) die filling: placing the cloth blank after winding into a mould for preheating and drying treatment, and removing water;
(4) pouring: injecting the epoxy resin mixture into the mold by using dynamic and static composite automatic pouring equipment under the condition that the mold keeps a vacuum state, so that the resin and the fabric blank are uniformly mixed;
(5) curing and forming: solidifying the poured cloth and the epoxy resin mixture into a whole;
(6) and (3) detecting the lamp light of the insulating tube: the solidified and formed insulating tube uses a fluorescent tube to transmit and detect whether the inside of the insulating tube has defects;
(7) bonding and assembling: bonding the insulating tube with the first metal joint and the second metal joint by using a curing adhesive, and curing;
(8) testing and detecting: x-ray flaw detection is carried out on the insulated pull rod to detect whether the bonding area is flawless, a tensile and torsion resistance test is carried out to examine the mechanical strength of the insulated pull rod, and routine power frequency voltage withstanding detection is carried out to detect the reliability of the electrical property.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (5)
1. An insulated pull rod, its characterized in that: the hydraulic mechanism comprises an insulating pipe, wherein a first metal joint and a second metal joint are respectively connected to two ends of the insulating pipe, the first metal joint comprises a first connecting end connected with an output rod of a hydraulic mechanism and a first assembling end connected with the insulating pipe, the first connecting end is provided with a pin hole connected with the output rod of the hydraulic mechanism, and the first assembling end is in threaded connection with the inner wall of the insulating pipe; the second metal joint comprises a second connecting end connected with the moving contact and a second assembling end connected with the insulating tube, the second connecting end is provided with a pin hole connected with the moving contact, and the second assembling end is in threaded connection with the inner wall of the insulating tube; the insulating tube comprises an inner resin layer, an inner polyester cloth layer, a middle glass fiber cloth layer, an outer polyester cloth layer and an outer resin layer which are coated layer by layer from inside to outside.
2. An insulated trolley according to claim 1, characterized in that: and the two ends of the insulating tube are respectively connected with a shielding support ring, the shielding support rings are sleeved on the outer wall of the insulating tube, the shielding support ring at one end is connected with the first metal joint, and the shielding support ring at the other end is connected with the second metal joint.
3. An insulated trolley according to claim 2, characterized in that: the shielding support ring is made of aluminum alloy, and the first metal joint and the second metal joint are made of aluminum alloy.
4. A method of manufacturing an insulated rod according to any of claims 1-3, characterized in that it comprises the following steps:
(1) pretreatment of raw materials: cutting glass fiber cloth and polyester fabric according to a ratio of 10:1, drying, and mixing epoxy resin, curing agent and accelerator uniformly under a vacuum state;
(2) cloth blank winding: winding the terylene cloth, the glass fiber cloth and the terylene cloth on a metal core rod in sequence, and rolling the wound cloth by using a roller press;
(3) die filling: placing the cloth blank after winding into a mould for preheating and drying treatment, and removing water;
(4) pouring: injecting the epoxy resin mixture into the mold by using dynamic and static composite automatic pouring equipment under the condition that the mold keeps a vacuum state, so that the resin and the fabric blank are uniformly mixed;
(5) curing and forming: solidifying the poured cloth and the epoxy resin mixture into a whole;
(6) and (3) detecting the lamp light of the insulating tube: the solidified and formed insulating tube uses a fluorescent tube to transmit and detect whether the inside of the insulating tube has defects;
(7) bonding and assembling: bonding the insulating tube with the first metal joint and the second metal joint by using a curing adhesive, and curing;
(8) testing and detecting: x-ray flaw detection is carried out on the insulated pull rod to detect whether the bonding area is flawless, a tensile and torsion resistance test is carried out to examine the mechanical strength of the insulated pull rod, and routine power frequency voltage withstanding detection is carried out to detect the reliability of the electrical property.
5. Use of an insulating rod according to any one of claims 1 to 3 in a 1100 kilovolt high voltage switch disconnector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010151609.4A CN111180256A (en) | 2020-03-06 | 2020-03-06 | Insulating pull rod for 1100kV extra-high voltage circuit breaker and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010151609.4A CN111180256A (en) | 2020-03-06 | 2020-03-06 | Insulating pull rod for 1100kV extra-high voltage circuit breaker and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111180256A true CN111180256A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010151609.4A Pending CN111180256A (en) | 2020-03-06 | 2020-03-06 | Insulating pull rod for 1100kV extra-high voltage circuit breaker and manufacturing method |
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| Country | Link |
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| CN (1) | CN111180256A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201188368Y (en) * | 2008-04-11 | 2009-01-28 | 张长安 | Integral-molding compound material insulation drive tube with insert |
| CN104112614A (en) * | 2014-01-03 | 2014-10-22 | 山东泰开高压开关有限公司 | Manufacturing method for insulating pull rod used for 800kV circuit breaker |
| CN105977066A (en) * | 2016-07-05 | 2016-09-28 | 江苏神马电力股份有限公司 | Insulating pull bar |
| WO2016185419A1 (en) * | 2015-05-19 | 2016-11-24 | Tyco Electronics (Shanghai) Co. Ltd. | Insulation assembly |
| CN207425702U (en) * | 2017-11-11 | 2018-05-29 | 河南森源电气股份有限公司 | A kind of breaker and its insulated tension pole, metal joint |
| CN110246730A (en) * | 2019-07-19 | 2019-09-17 | 常州博瑞电力自动化设备有限公司 | A kind of dc circuit breaker composite insulated pull-rod |
| CN211182074U (en) * | 2020-03-06 | 2020-08-04 | 山东泰开电器绝缘有限公司 | Insulating pull rod for 1100kV extra-high voltage switch circuit breaker |
-
2020
- 2020-03-06 CN CN202010151609.4A patent/CN111180256A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201188368Y (en) * | 2008-04-11 | 2009-01-28 | 张长安 | Integral-molding compound material insulation drive tube with insert |
| CN104112614A (en) * | 2014-01-03 | 2014-10-22 | 山东泰开高压开关有限公司 | Manufacturing method for insulating pull rod used for 800kV circuit breaker |
| WO2016185419A1 (en) * | 2015-05-19 | 2016-11-24 | Tyco Electronics (Shanghai) Co. Ltd. | Insulation assembly |
| CN105977066A (en) * | 2016-07-05 | 2016-09-28 | 江苏神马电力股份有限公司 | Insulating pull bar |
| CN207425702U (en) * | 2017-11-11 | 2018-05-29 | 河南森源电气股份有限公司 | A kind of breaker and its insulated tension pole, metal joint |
| CN110246730A (en) * | 2019-07-19 | 2019-09-17 | 常州博瑞电力自动化设备有限公司 | A kind of dc circuit breaker composite insulated pull-rod |
| CN211182074U (en) * | 2020-03-06 | 2020-08-04 | 山东泰开电器绝缘有限公司 | Insulating pull rod for 1100kV extra-high voltage switch circuit breaker |
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