CN2646835Y - A high-tension bushing - Google Patents
A high-tension bushing Download PDFInfo
- Publication number
- CN2646835Y CN2646835Y CN 02257145 CN02257145U CN2646835Y CN 2646835 Y CN2646835 Y CN 2646835Y CN 02257145 CN02257145 CN 02257145 CN 02257145 U CN02257145 U CN 02257145U CN 2646835 Y CN2646835 Y CN 2646835Y
- Authority
- CN
- China
- Prior art keywords
- grounding electrode
- target
- guide rod
- insulating barrier
- electrode
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model is a high voltage bushing, which comprises an insulation layer, a guide rod, a grounding electrode external insulation, a mounting flange and a wire connecting terminal that is connected with the two ends of the guide rod. The utility model is characterized in that: when the rated voltage is smaller than 126KV, the utility model only has grounding electrode. When rated voltage is larger than or equivalent to 126KV, the utility model is additionally provided with the intermediate electrode except the grounding electrode. The geometrical shape of vertical section at the two ends of the intermediate electrode and grounding electrode shows axial symmetry and is the tadpole shape respectively, while the intermediate part of intermediate electrode and grounding electrode is the circular tube shape. Having no any fluid media in the structure, the utility model is a real dry type structure. As the geometrical shape of vertical section at the two ends of the intermediate electrode and the grounding electrode is the tadpole shape, thereby guaranteeing that the electric field strength of intermediate electrode and grounding electrode is smaller than the allowable electric field strength value. Therefore, evaluation parameters such as local discharge, dielectric losses, power frequency withstand voltage and impact withstand voltage all reach the requirement of technical standard. At the same time, the utility model is simple for manufacturing, safe and reliable.
Description
Technical field
The utility model relates to a kind of High-Voltage Electrical Appliances, particularly bushing.
Background technology
High voltage bushing on the domestic market roughly has two kinds at present.A kind of is the paper oil insulation porcelain bushing: by guide rod, insulating paper strip twines the back and immerses capacitance plate and the electroceramics overcoat be made up of metal forming that distribute between insulating barrier that insulating oil constitutes and the insulating barrier and form.This kind bushing is a sleeve pipe the earliest, and the insulator heaviness is frangible, and seepage oil is its disadvantage, influences security of operation, and increases maintenance workload.
Second kind of teflin tape wound form sleeve pipe: by guide rod, capacitance plate and organic external insulation layer that the metal forming that distributes between insulating barrier that teflin tape and interband interpolation silicone oil turn to and insulating barrier is formed are formed.Though this kind bushing is called as " dry type " bushing, it also contains silicone oil, and seepage oil problem is arranged equally.Carry out in atmospheric environment in the manufacture process, be mingled with a large amount of bubbles in the insulating barrier inevitably, make the measurement of partial discharge index usually defective, and teflin tape costs an arm and a leg, production cost is higher.
The utility model content
Goal of the invention of the present utility model be overcome the prior art leakage of oil, cost an arm and a leg, shortcoming such as complex process, provide oil-proof, safe and reliable, cost is low, technology simple high pressure sleeve pipe.
The utility model reaches goal of the invention by the following technical programs.
Its structure has two types: a kind of is when rated voltage is less than or equal to 126kV, it by insulating barrier and be insulated the layer deposited guide rod, grounding electrode and the external insulation wrapped up in form.The grounding electrode mid portion places outside the insulating barrier, and the part pipe shape part and the guide rod of its both ends and close end place in the insulating barrier jointly.Grounding electrode and guide rod are coaxial.The guide rod two ends are connected with binding post.Mounting flange is equipped with at the middle part of external insulation.
Another kind is that rated voltage is big or when equaling 126kV, with preceding a kind of different be in insulating barrier, set up target between guide rod and the grounding electrode.At this moment, guide rod, target are coaxial with grounding electrode, and guide rod places in the target of being made by semiconductor or conductor material, and target is with the grounding electrode that semiconductor or conductor material are made outward.Learn thus, the utility model from guide rod, insulating barrier, target, grounding electrode to the external insulation all without any fluid media (medium), be real dry construction.Therefore, there is not the leakage of oil problem.
Key character of the present utility model is the geometry of grounding electrode and target: the mid portion thickness of target and grounding electrode is all the pipe shape of 2～3mm.Their two ends are thickening gradually, and its vertical section respectively is " a tadpole shape " axisymmetricly.The end of indication is meant the part of its thickness greater than mid portion thickness 0.5mm.
When rated voltage was less than or equal to 126kV, the geometry at grounding electrode both ends was based on an equipotential c between the electric field of the endless face of cylinder a composition of the face of cylinder of dummy electrodes b and coaxial guide rod, transformed to form.The selection of equipotential surface is that to allow electric field strength with maximum field intensity on the equipotential surface less than material be principle, the equipotential surface shape that process is transformed is as the geometry of grounding electrode both ends of the surface, and the electric field strength with this geometry grounding electrode allows the electric field strength value less than material.Therefore examination parameters such as partial discharge, dielectric loss, industrial frequency withstand voltage, impulse withstand voltage can both reach standard-required, reliable in quality.
When rated voltage during more than or equal to 126kV, the geometry at grounding electrode both ends is equipotential surface c between the electric field formed of the endless face of cylinder a based on the face of cylinder of dummy electrodes b and coaxial target, transforms to form.The selection of this equipotential surface c is that to allow electric field strength with maximum field intensity on the equipotential surface less than material be principle, through the equipotential surface shape the transformed geometry as the grounding electrode both ends of the surface.The geometry at target both ends is equipotential surface c between the electric field formed of the endless face of cylinder a based on the face of cylinder of dummy electrodes b and coaxial guide rod, transforms to form.The selection of this equipotential surface is that to allow electric field strength with maximum field intensity on the equipotential surface less than material be principle.The equipotential surface shape that process is transformed is as the geometry of target both ends of the surface.Electric field strength with this geometry grounding electrode and target allows the electric field strength value less than material.Therefore examination parameters such as partial discharge, dielectric loss, industrial frequency withstand voltage, impulse withstand voltage can both reach standard-required, reliable in quality.
The cast of the utility model internal insulating layer or mold pressing are that pattern tool size guarantees, and be more simpler than manual winding method, accurate.Insulating material in tank body, pipeline and the mould of airtight connection, can not be subjected to pollutions such as dust all the time in the production process, and quality also guarantees easily.Insulating barrier adopts organic material to solidify and forms, and wherein the every performance index of epoxy resin are good, cheap, ample supply and prompt delivery, steady quality.External insulation adopts anti-aging, uvioresistant, anti-electric arc, hydrophobicity is strong, antifouling property is good organic insulating material, guarantees that it is safe and reliable.
This practical detailed technical scheme is: it is by insulating barrier (3) and be insulated layer (3) institute's deposited guide rod of wrapping up in (2) and place the outer external insulation (7) of insulating barrier (3), the bushing that grounding electrode (5) is formed.
When rated voltage is less than or equal to 126kV, the outer grounding electrode of making by semiconductor or conductor material (5) that only is with of guide rod (2).Be connected with binding post (1) with guide rod (2) two ends.Grounding electrode (5) mid portion places outside the insulating barrier.The pipe shape part and the guide rod (2) of both ends of its (5) and close end place in the insulating barrier (3) jointly.Grounding electrode (5) and guide rod (2) are coaxial.Mounting flange (6) is equipped with at the middle part of external insulation (7).
When rated voltage during, set up and put target (4) more than or equal to 126kV.Guide rod (2) places in the target of being made by semiconductor or conductor material (4).Be with the grounding electrode (5) that semiconductor or conductor material are made outside the target (4).Guide rod (2) two ends are connected with binding post (1).Grounding electrode (5) mid portion places outside the insulating barrier (3).The pipe shape part and the guide rod (2) of both ends of its (5) and close end place in the insulating barrier (3) jointly.Grounding electrode (5) and guide rod (2) are coaxial.Target (4) and guide rod (2) place in the insulating barrier (3) also coaxial jointly.Mounting flange (6) is equipped with at the middle part of external insulation (7).
When rated voltage is less than or equal to 126kV, as shown in Figure 5, the both ends geometry of grounding electrode (5) all is that the endless face of cylinder a (10) based on the face of cylinder of dummy electrodes b (8) and coaxial guide rod (2) forms the equipotential surface c (9) between the electric field, the selection of this equipotential surface is to allow electric field strength to be as the criterion with the maximum field intensity on the equipotential surface less than material, the two ends of equipotential surface c (9) are symmetrical, are representative so select left end.If the coordinate of equipotential surface c (9) high order end (11) be (0, y
0).As y＜y
0The time, the geometry at grounding electrode (5) both ends is identical with equipotential surface c (9).As y＞y
0The time, the coordinate of equipotential surface c (9) is revised, make the former equipotential surface c that disperses (9) become and can restrain, guarantee that again revised maximum field intensity is consistent with the electric field strength of former equipotential surface c (9) simultaneously.The equipotential surface shape that process is transformed is as the geometry of grounding electrode (5) both ends of the surface.The mid portion thickness of grounding electrode (5) is the pipe shape of 2～3mm, and its two ends are thickening gradually, and its vertical section respectively is " a tadpole shape " axisymmetricly.Its end is meant the part of its thickness greater than mid portion thickness 0.5mm.
When rated voltage during more than or equal to 126kV, as shown in Figure 4, the both ends geometry of grounding electrode (5) is the equipotential surface c (9) between the electric field formed of the endless face of cylinder a (12) based on the face of cylinder of dummy electrodes b (8) and coaxial target (4), transforms to form.The selection of this equipotential surface c (9) is to allow electric field strength to be as the criterion with maximum field intensity on the equipotential surface less than material.The two ends of equipotential surface c (9) are symmetrical, are representative so select left end.If the coordinate of equipotential surface c (9) high order end (11) be (0, y
0).As y＜y
0The time, the geometry at grounding electrode (5) both ends is identical with equipotential surface c (9).As y＞y
0The time, the coordinate of equipotential surface c (9) is revised, make the former equipotential surface c that disperses (9) become and can restrain, guarantee that again revised maximum field intensity is consistent with the electric field strength of former equipotential surface c (9) simultaneously.The equipotential surface shape that process is transformed is as the geometry of grounding electrode (5) both ends of the surface.As shown in Figure 3, the geometry at target (4) both ends is based on the equipotential c (9) between the electric field of endless face of cylinder a (10) composition of the face of cylinder of dummy electrodes b (8) and coaxial guide rod (2), transforms to form.The selection of equipotential surface c (9) is that to allow electric field strength with maximum field intensity on the equipotential surface less than material be principle.The two ends of equipotential surface c (9) are symmetrical, are representative so select left end.If the coordinate of equipotential surface c (9) high order end (11) be (0, y
0).As y＜y
0The time, the geometry at target (4) both ends is identical with equipotential surface c (9).As y＞y
0The time, the coordinate of equipotential surface c (9) is revised, make the former equipotential surface c that disperses (9) become and can restrain, guarantee that again revised maximum field intensity is consistent with the electric field strength of former equipotential surface c (9) simultaneously.The equipotential surface shape that process is transformed is as the geometry of target (4) both ends of the surface.The geometry at their two ends is thickenings gradually, and its vertical section respectively is " a tadpole shape " axisymmetricly.Their end is meant the part of its thickness greater than mid portion thickness 0.5mm.The mid portion thickness of target (4) and grounding electrode (5) is the pipe shape of 2～3mm.
According to above-mentioned principle, the end size scope that draws the grounding electrode (5) of each electric pressure and target (4) is as shown in table 1.Table 1 illustrated dimension scope is a rectangle, and the both ends tadpole shape that refers to grounding electrode (5) and target (4) is in this rectangular extent.
Each electric pressure grounding electrode of table 1 and target end size scope
| Rated voltage (kV) | Grounding electrode end scope (mm) | Target end scope (mm) | ||
| Length | Thickness | Length | Thickness | |
| 40.5 | ＜60 | ＜18 | / | / |
| 72.5 | ＜80 | ＜20 | / | / |
| 126 | ＜120 | ＜28 | / | / |
| 126 | ＜80 | ＜18 | ＜80 | ＜18 |
When target (4), the length (comprising both ends) of target (4) is the mean value of the length (comprising two ends) of guide rod (2) (not comprising and binding post (1) coupling part) and grounding electrode (5).The guide rod of each electric pressure (2) (not comprising and binding post (1) coupling part), grounding electrode (5) (comprising both ends), and the length range of target (comprising both ends) is as shown in table 2.
The length range of the guide rod of each electric pressure of table 2, grounding electrode target
| Rated voltage (kV) | Guide rod (mm) | Target (mm) | Grounding electrode (mm) |
| 40.5 | 1200～1500 | / | 300～600 |
| 72.5 | 2000～2300 | / | 500～800 |
| 126 | 2800～3300 | / | 600～1100 |
| 126 | 3100～3300 | 2025～2225 | 950～1150 |
Insulating barrier (3) is by the organic insulating material curing molding, and wherein epoxy resin is wherein a kind of.
Description of drawings
Fig. 1 the utility model has the target schematic diagram;
Fig. 2 the utility model has only the grounding electrode schematic diagram;
Fig. 3 rated voltage is determined target both ends of the surface geometry schematic diagram during more than or equal to 126kV;
Fig. 4 rated voltage is determined grounding electrode both ends of the surface geometry schematic diagram during more than or equal to 126kV;
When Fig. 5 rated voltage is less than or equal to 126kV, determine grounding electrode both ends of the surface geometry schematic diagram.
Wherein: the 1-binding post; The 2-guide rod; The 3-insulating barrier; The 4-target; The 5-grounding electrode; The 6-mounting flange; The 7-external insulation; 8-dummy electrodes b; 9-equipotential surface c; The endless face of cylinder a of 10-guide rod; 11-equipotential surface c high order end; The endless face of cylinder a of 12-target.
Embodiment
Be described in detail embodiment in conjunction with Figure of description.
Execution mode 1: when rated voltage was 126kV, it was by insulating barrier (3) and be insulated layer (3) deposited guide rod of wrapping up in (2), target (4), grounding electrode (5) and place insulating barrier (3) external insulation (7) outward to form as shown in Figure 1.Guide rod (2) places in the target of being made by semiconductor or conductor material (4).Be with the grounding electrode (5) that semiconductor or conductor material are made outside the target (4).Grounding electrode (5) mid portion is outside insulating barrier (3), and the part pipe shape part at grounding electrode (5) both ends and close both ends is in insulating barrier (3).What join with guide rod (2) two ends is binding post (1).Target (4) and guide rod (2) place in the insulating barrier (3) also coaxial jointly.Grounding electrode (5) and guide rod (2) are coaxial, and the middle part of external insulation (7) connects by mounting flange (6).Insulating barrier (3) is by the epoxy resin cure moulding.
As shown in Figure 4, the geometry of grounding electrode (5) both ends of the surface is the equipotential surface c (9) between the electric field formed of the endless face of cylinder a (12) based on the face of cylinder of dummy electrodes b (8) and coaxial target (4), transforms to form.The selection of equipotential surface c (9) is that to allow electric field strength with maximum field intensity on the equipotential surface less than material be principle.The two ends of equipotential surface c (9) are symmetrical, are representative so select left end.If the coordinate of equipotential surface c (9) high order end (11) be (0, y
0).As y＜y
0The time, the geometry at grounding electrode (5) both ends is identical with equipotential surface c (9).As y＞y
0The time, the coordinate of equipotential surface c (9) is revised, make the former equipotential surface c that disperses (9) become and can restrain, guarantee that again revised maximum field intensity is consistent with the electric field strength of former equipotential surface c (9) simultaneously.The equipotential surface shape that process is transformed is as the geometry of grounding electrode (5) both ends of the surface.
As shown in Figure 3, the geometry of target (4) both ends of the surface is the equipotential surface c (9) between the electric field formed of the endless face of cylinder a (10) based on the face of cylinder of dummy electrodes b (8) and coaxial guide rod (2), transforms to form.The selection of equipotential surface c (9) is that to allow electric field strength with maximum field intensity on the equipotential surface less than material be principle.The two ends of equipotential surface c (9) are symmetrical, are representative so select left end.If the coordinate of equipotential surface c (9) high order end (11) be (0, y
0).As y＜y
0The time, the geometry at target (4) both ends is identical with equipotential surface c (9).As y＞y
0The time, the coordinate of equipotential surface c (9) is revised, make the former equipotential surface c that disperses (9) become and can restrain, guarantee that again revised maximum field intensity is consistent with the electric field strength of former equipotential surface c (9) simultaneously.The equipotential surface shape that process is transformed is as the geometry of target (4) both ends of the surface.
The vertical section at the both ends of target (4) is two tadpole shapes, and the rectangular dimension of control tadpole shape is length 70mm, thickness 18mm.The length of target (4) is 2125mm.
The vertical section at the both ends of grounding electrode (5) is two tadpole shapes, and the rectangular dimension of control tadpole shape is length 70mm, thickness 15mm.The length 1050mm of grounding electrode (5).
Guide rod (2) length is 3200mm.Target (4) and grounding electrode (5) mid portion are the pipe shape, and thickness is 2.5mm.
Execution mode 2: when rated voltage equals 126kV, as shown in Figure 2 it by insulating barrier (3), be insulated layer (3) the deposited guide rod of wrapping up in (2), place insulating barrier (3) grounding electrode (5) and external insulation (7) outward to form, the position connected mode is with execution mode 1 between them, but do not have target.Be connected to binding post (1) with guide rod (2) two ends.Mounting flange (6) is equipped with at the middle part of external insulation (7).Insulating barrier (3) is by the epoxy resin cure moulding.
As shown in Figure 5, grounding electrode (5) both ends geometry be equipotential surface c (9) between the electric field formed of the endless face of cylinder a (10) based on the face of cylinder of dummy electrodes b (8) and coaxial grounding electrode (5), transform and form.The selection of equipotential surface c (9) is that to allow electric field strength with maximum field intensity on the equipotential surface less than material be principle.The two ends of equipotential surface c (9) are symmetrical, are representative so select left end.If the coordinate of equipotential surface c (9) high order end (11) be (0, y
0).As y＜y
0The time, the geometry at grounding electrode (5) both ends is identical with equipotential surface c (9).As y＞y
0The time, the coordinate of equipotential surface c (9) is revised, make the former equipotential surface c that disperses (9) become and can restrain, guarantee that again revised maximum field intensity is consistent with the electric field strength of former equipotential surface c (9) simultaneously.The equipotential surface shape that process is transformed is as the geometry of grounding electrode (5) both ends of the surface.
The vertical section at the both ends of grounding electrode (5) is two tadpole shapes, and the rectangular dimension of control tadpole shape is length 100mm, its thickness 25mm.Guide rod (2) length 3100mm, grounding electrode (5) length 900mm.The grounding electrode mid portion is the pipe shape, and thickness is 2.5mm.
Execution mode 3: when rated voltage was 72.5kV, as shown in Figure 2, it was by insulating barrier (3) and be insulated layer (3) institute's deposited guide rod of wrapping up in (2) and place insulating barrier (3) external insulation (7) outward to form.The outer grounding electrode of making by semiconductor or conductor material (5) that only is with of guide rod (2).The position of grounding electrode (5) is with execution mode 3.What join with guide rod (2) two ends is binding post (1).Grounding electrode (5) and guide rod (2) are coaxial.Mounting flange (6) is equipped with at the middle part of external insulation (7).Insulating barrier (3) is by the epoxy resin cure moulding.
Grounding electrode (5) two ends vertical section is two tadpole shapes, and the rectangular dimension scope of control tadpole shape is length 80mm, thickness 20mm.Grounding electrode (5) mid portion is the pipe shape, and thickness is 2.5mm.The length 2100mm of guide rod (2), the length of grounding electrode (5) is 600mm.
Execution mode 4: when rated voltage was 40.5kV, as shown in Figure 2, it was by insulating barrier (3) and be insulated layer (3) institute's deposited guide rod of wrapping up in (2) and place insulating barrier (3) external insulation (7) outward to form.The outer grounding electrode of making by semiconductor or conductor material (5) that only is with of guide rod (2).Grounding electrode (5) mid portion is outside insulating barrier (3), and the part pipe shape part at close both ends, grounding electrode (5) both ends is in insulating barrier (3).Grounding electrode (5) and guide rod (2) are coaxial, and what join with guide rod (2) two ends is binding post (1).Mounting flange (6) is equipped with at the middle part of external insulation (7).Insulating barrier (3) is by the epoxy resin cure moulding.
Grounding electrode (5) two ends vertical section is two tadpole shapes, and the rectangular dimension scope of control tadpole shape is length 60mm, thickness 18mm.Grounding electrode (5) mid portion is the pipe shape, and thickness is 2.5mm.The length 1200mm of guide rod (2), the length of grounding electrode (5) is 300mm.
Claims (3)
1, a kind of by insulating barrier (3) and be insulated layer (3) institute's deposited guide rod of wrapping up in (2) and place insulating barrier (3) grounding electrode (5) and the bushing formed of external insulation (7) outward, when it is characterized in that rated voltage is less than or equal to 126kV, the outer grounding electrode of making by semiconductor or conductor material (5) that only is with of guide rod (2), guide rod (2) two ends are connected to binding post (1), the mid portion of grounding electrode (5) is outside insulating barrier (3), grounding electrode (5) both ends and part place insulating barrier (3) interior and coaxial near the pipe part and the guide rod (2) at target (5) both ends jointly, and mounting flange (6) is equipped with at the middle part of external insulation (7);
Rated voltage is more than or equal to 126kV the time, set up and put target (4), guide rod (2) places in the target of being made by semiconductor or conductor material (4), be with the grounding electrode (5) that semiconductor or conductor material are made outside the target (4), be connected with binding post (1) with guide rod (2) two ends, target (4) and guide rod (2) place in the insulating barrier (3) also coaxial jointly, the mid portion of grounding electrode (5) is outside insulating barrier (3), grounding electrode (5) both ends and part place insulating barrier (3) interior and coaxial near the pipe part and the guide rod (2) at target (5) both ends jointly, and mounting flange (6) is equipped with at the middle part of external insulation (7).
2, bushing according to claim 1, the mid portion that it is characterized in that said target (4) and grounding electrode (5) all is that thickness is the pipe shape of 2～3mm, the vertical section geometry of two ends of target (4) and grounding electrode (5) axisymmetricly, respectively be the tadpole shape, the tadpole shape at the both ends of grounding electrode of each electric pressure (5) and target (4) is in following rectangular dimension scope:
Rated voltage kV Grounding electrode (5) end scope mm Target (4) end scope mm
Length Thickness Length Thickness
40.5 ＜60 ＜18 / /
72.5 ＜80 ＜20 / /
126 ＜120 ＜28 / /
126 ＜80 ＜18 ＜80 ＜18
The length that comprises the target (4) at both ends is to remove with the guide rod (2) of binding post coupling part and comprise the length mean value of the grounding electrode (5) at both ends, and the guide rod of each electric pressure (2) is removed with binding post coupling part, grounding electrode (5) and comprised that both ends and target (4) comprise that the length range at both ends is as follows:
Rated voltage (kV) Guide rod (2) (mm) Target (4) (mm) Grounding electrode (5) (mm)
40.5 1200～1500 / 300～600
72.5 2000～2300 / 500～800
126 2800～3300 / 600～1100
126 3100～3300 2025～2225 950～1150
Target (4) and the said end of grounding electrode (5) are meant the part of its thickness greater than mid portion thickness 0.5mm.
3, according to claim 1 or 2 described bushings, it is characterized in that said insulating barrier (3) is by the organic insulating material curing molding, wherein epoxy resin is wherein a kind of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02257145 CN2646835Y (en) | 2002-09-27 | 2002-09-27 | A high-tension bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02257145 CN2646835Y (en) | 2002-09-27 | 2002-09-27 | A high-tension bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2646835Y true CN2646835Y (en) | 2004-10-06 |
Family
ID=34280937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02257145 Expired - Fee Related CN2646835Y (en) | 2002-09-27 | 2002-09-27 | A high-tension bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2646835Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449653C (en) * | 2005-07-07 | 2009-01-07 | 北京天威瑞恒高压套管有限公司 | High-pressure insulation core with lining layer |
| CN104300465A (en) * | 2014-10-28 | 2015-01-21 | 成都峰达科技有限公司 | Outdoor part of high-pressure wall bushing with electric field distribution balancing function |
| WO2015041378A1 (en) * | 2013-09-17 | 2015-03-26 | 상명대학교서울산학협력단 | Flow battery using metallocene |
-
2002
- 2002-09-27 CN CN 02257145 patent/CN2646835Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449653C (en) * | 2005-07-07 | 2009-01-07 | 北京天威瑞恒高压套管有限公司 | High-pressure insulation core with lining layer |
| WO2015041378A1 (en) * | 2013-09-17 | 2015-03-26 | 상명대학교서울산학협력단 | Flow battery using metallocene |
| CN104300465A (en) * | 2014-10-28 | 2015-01-21 | 成都峰达科技有限公司 | Outdoor part of high-pressure wall bushing with electric field distribution balancing function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110265176B (en) | Dielectric gradient material and application thereof | |
| KR20130016330A (en) | Electrical bushing | |
| CN2646835Y (en) | A high-tension bushing | |
| CN101355270A (en) | Halo-proof structure for motor stator coil and processing method thereof | |
| CN201886843U (en) | Inner umbrella skirt type hollow core composite pillar insulator | |
| CN101763923B (en) | High-voltage end | |
| CN209357555U (en) | Integration injection silicon rubber composite insulation outdoor voltage transformer | |
| CN1133184C (en) | Transformer with thin insulating layer and deposited filler resin and its making method | |
| CN201398049Y (en) | Dry type high voltage bushing | |
| CN1516206A (en) | Resin-poured insulation dry transformer and its production method | |
| CN112002463A (en) | High-voltage AC/DC wall bushing and preparation method thereof | |
| EP3499666A1 (en) | Ultra-high voltage wall bushing with sf6 gas insulation | |
| CN1255821C (en) | Unit serial compound insulator | |
| CN215342160U (en) | Novel dry-type sleeve for electric power system | |
| CN110010315B (en) | Sleeve pipe | |
| CN2583773Y (en) | Dry high voltage casing | |
| CN202042292U (en) | Composite jacket pillar insulator for 35kV and below voltage dropout fuse | |
| CN101783215A (en) | Composite insulator and preparation method thereof | |
| CN209729710U (en) | A kind of current transformer | |
| CN202183340U (en) | Insulation supporting cylinder | |
| CN210073597U (en) | Outdoor three-phase integrated current transformer with stress cone and semiconductor tube | |
| CN201742071U (en) | High-voltage cable combined stress control cable terminal | |
| CN213583518U (en) | Ceramic capacitor chip | |
| CN2318698Y (en) | Filled resin thin insulation pouring transformer | |
| CN2669329Y (en) | Seamless silicon-rubber multi-bevel external insulation sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |