CN103344792B - Guiding structure under special end shield monitored by a kind of bushing shell for transformer - Google Patents
Guiding structure under special end shield monitored by a kind of bushing shell for transformer Download PDFInfo
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- CN103344792B CN103344792B CN201310269132.XA CN201310269132A CN103344792B CN 103344792 B CN103344792 B CN 103344792B CN 201310269132 A CN201310269132 A CN 201310269132A CN 103344792 B CN103344792 B CN 103344792B
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- 238000000605 extraction Methods 0.000 claims abstract description 19
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000004888 barrier function Effects 0.000 claims abstract description 5
- 230000008859 change Effects 0.000 claims description 15
- 238000003475 lamination Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Abstract
Guiding structure under special end shield monitored by a kind of bushing shell for transformer, comprises end shield shell, insulation barrier, end shield guide rod; It is characterized in that, also comprise: forward and backward end cap; Front end end cover front portion connects end shield shell, and rear end cap front portion is connected with front end end cover rear threads, and forward and backward end cap is communicated with formation Global Macros chamber; Draw and stationary installation, comprise and draw guide rod, line ball nut, insulating bushing; Establish the first blind hole in the polished rod section of extraction guide rod front portion and be built-in with spring; End shield guide rod gap to be plugged in this first blind hole and and spring contact; Establish the second blind hole in the thread segment at extraction guide rod rear portion, the second blind hole is radially provided with four through holes; Line ball nut is assemblied on thread segment; Insulating bushing is assemblied on thread segment; Metallic bellows soft connection component; Pipeline Hard link part; Second metallic bellows; End head is by cylindrical shell, rear shrouding.Its available protecting extension line can ensure that end shield ground connection is good, insulation is reliable, sealing, its safe operation of durable guarantee.
Description
Technical field
The present invention relates to transformer technology field, especially the deriving structure of transformer end shield.
Background technology
Along with electrical network development and electrical network scale constantly expand, implement grid equipment repair based on condition of component imperative.And the correct collection of Condition Detection information is the basis of repair based on condition of component, assessment can be made to equipment health status and fault progression trend, rationally reduce the cost of overhaul, improve overhaul efficiency, support equipment reliability service.Bushing shell for transformer is as one of the important component part of transformer, one of equipment of crucial importance ensureing electric power netting safe running, the timely monitoring of its state is seemed particularly important, for Timeliness coverage power grid security hidden danger, ensures electric power netting safe running important in inhibiting.
The bushing shell for transformer installed at present all can not meet the test condition of it being carried out to state-detection under not power-off condition, all needs to carry out testing inspection under power-off condition.There is sense cycle long, test figure can not the shortcomings such as accurate response actual conditions.Therefore need to reequip existing structure.Invent a kind of bushing shell for transformer and monitor special end shield deriving structure, enable tester under not power-off condition safety, complete the detection of the quantity of state to bushing shell for transformer accurately and rapidly, ensure that end shield ground connection is good simultaneously, insulation be reliable, sealing, its safe operation of durable guarantee.
Summary of the invention
In order to overcome the shortcoming that above-mentioned prior art exists, a kind of bushing shell for transformer is the object of the present invention is to provide to monitor guiding structure under special end shield, can under not power-off condition safety, complete the detection of the quantity of state to bushing shell for transformer accurately and rapidly, ensure that end shield ground connection is good simultaneously, insulation be reliable, sealing, its safe operation of durable guarantee.
In order to solve the problem, the present invention by the following technical solutions: guiding structure under special end shield monitored by a kind of bushing shell for transformer, comprises end shield shell, insulation barrier, end shield guide rod; It is characterized in that, the axis of described end shield guide rod is datum axis; Also comprise:
Front end end cover, arranges a center cavity; The internal diameter of front end end cover upper forepart is less than the internal diameter at rear portion, and at the internal diameter change place formation one inner plane step radially that anterior, rear portion have a common boundary; The external diameter of front end end cover upper forepart is also less than the external diameter at rear portion, and at the external diameter change place formation one outerplanar step radially that anterior, rear portion have a common boundary; The front portion of front end end cover is provided with external thread and is threaded connection in end shield shell, and the axis of center cavity overlaps with described datum axis; The rear portion of front end end cover arranges internal thread;
Rear end cap, also arranges a center cavity; The internal diameter of rear end cap upper forepart is greater than the internal diameter at rear portion, and at the internal diameter change place formation one inner plane step radially that anterior, rear portion have a common boundary; The external diameter of rear end cap upper forepart is greater than the external diameter at rear portion, and at the external diameter change place formation one outerplanar step radially that anterior, rear portion have a common boundary; The front portion of rear end cap is connected by the internal thread of external thread with front end end cover rear portion, and the center cavity of front end end cover, the center cavity coaxial communication of rear end cap form a Global Macros chamber; The rear portion of rear end cap arranges external thread;
Draw and stationary installation, comprise and draw guide rod, line ball nut, insulating bushing; Described extraction guide rod is made up of the polished rod section of front portion and the thread segment at rear portion, arranges the first blind hole in described polished rod section, and the axis of the first blind hole overlaps with described datum axis; Rear end in described first blind hole is equipped with the spring flexible along datum axis direction; Being plugged in this first blind hole and the rear end face of end shield guide rod and described spring close contact of described end shield guide rod gap; What the thread segment at described extraction guide rod rear portion was arranged is external thread; Arrange the second blind hole in described thread segment, the axis of the second blind hole overlaps with described datum axis, and the front end edge radial direction of the second blind hole is provided with four through holes; Described line ball nut is assemblied on thread segment; Described insulating bushing is provided with internal thread hole, and is also assemblied on described thread segment by this internal thread hole; The external diameter of insulating bushing front portion is greater than the internal diameter at rear end cap rear portion, and the external diameter at insulating bushing rear portion is less than the internal diameter at rear end cap rear portion; The external diameter change place formation one outerplanar step radially that insulating bushing upper forepart, rear portion have a common boundary, the outerplanar step of insulating bushing coordinates with the inner plane step of rear end cap and forms position limiting structure;
Metallic bellows soft connection component, comprise the first metallic bellows and be separately positioned on two connectors at the first metallic bellows two ends, two connectors are designated as front connector, rear connector respectively; Described connector is made up of cylindrical shell, rear shrouding, the rear end being connected to cylindrical shell of rear shrouding sealing, and cylindrical shell is provided with internal thread; Described rear shrouding is provided with through hole along described datum axis; Two ends of described first metallic bellows be each passed through two connectors through hole and in described cylindrical shell radially extension form positive stop lug boss, the diameter of described positive stop lug boss is greater than the diameter of described through hole; The internal thread of the cylindrical shell of described front connector coordinates with the external thread at described rear end cap rear portion;
Pipeline Hard link part, is provided with center cavity, and the axis of center cavity overlaps with described datum axis; Described pipeline Hard link part comprises the first anterior external thread section, the boss section at middle part and the rear linkage section at rear portion; The external diameter of described boss section is greater than the external diameter of the first external thread section, rear linkage section; First external thread section is threaded with the rear connector in described metallic bellows soft connection component; Rear linkage section arranges an annular slot in the periphery of center cavity, and the axis of annular slot overlaps with described datum axis, and backwards, and internal ring wall is provided with the spiral lamination coordinated with metallic bellows helical fissure to the opening of annular slot,
Second metallic bellows, the inwall of the second metallic bellows front end is tightened the internal ring wall of the annular slot of pipeline Hard link part;
End head, by cylindrical shell, rear shrouding, the rear end being connected to cylindrical shell of rear shrouding sealing, cylindrical shell is provided with the inside spin line coordinated with the helical fissure of the second metallic bellows; And be tightened on the rear end outer wall of the second metallic bellows by this inside spin line, described rear shrouding is provided with through hole along described datum axis.
As further technical scheme: under this end shield in guiding structure,
The first O-ring seal is provided with between the outerplanar step of described front end end cover and end shield shell;
The second O-ring seal is provided with between the front end face of described rear end cap and the inner plane step of front end end cover;
Connector before in described metallic bellows soft connection component, is provided with the 3rd O-ring seal between the front end face of rear shrouding and the rear end face of described rear end cap;
Connector after in described metallic bellows soft connection component, is provided with the 4th O-ring seal between the rear end face of rear shrouding and the front end face of described pipeline Hard link part.
Further technical scheme: under this end shield in guiding structure, in described pipeline Hard link part, the internal ring wall of annular slot is longer than the external annulus of annular slot backward.
The invention has the beneficial effects as follows: use guiding structure under end shield of the present invention, tester can under not power-off condition safety, complete the detection of the quantity of state to bushing shell for transformer accurately and rapidly, ensure that end shield ground connection is good simultaneously, insulation be reliable, sealing, its safe operation of durable guarantee.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is described further:
Fig. 1 is the structural representation of the embodiment of the present invention;
In figure: 1 end shield shell, 2 insulation barriers, 3 end shield guide rods, 4 front end end covers, 41 inner plane steps, 42 outerplanar steps, 43 center cavities, 5 rear end caps, 51 center cavities, 52 inner plane steps, 53 outerplanar steps, 6 draw and stationary installation, 61 insulating bushings, 62 line ball nuts, 63 draw guide rod, 64 first blind holes, 65 springs, 66 second blind holes, 67 through holes, 68 outerplanar steps; 7 metallic bellows soft connection component, 71 first metallic bellowss, connector before 72, connector after 73,74 cylindrical shells, shrouding after 75,76 through holes, 77 positive stop lug boss; 8 pipeline Hard link parts, 81 center cavities, 82 first external thread sections, 83 boss sections, linkage section after 84,85 annular slots, 86 internal ring walls, 87 external annulus, 9 second metallic bellowss, 10 end heads, 101 cylindrical shells, shrouding after 102,103 through holes.
Embodiment
Guiding structure under end shield as shown in Figure 1, comprises end shield shell 1, insulation barrier 2, end shield guide rod 3; Also comprise front end end cover 4, rear end cap 5, draw and stationary installation 6, metallic bellows soft connection component 7, pipeline Hard link part 8, second metallic bellows 9, end head 10.
Extraction and stationary installation 6 comprise draws guide rod 63, line ball nut 62, insulating bushing 61.
Metallic bellows soft connection component 7 comprises the first metallic bellows 71 and is separately positioned on two connectors at the first metallic bellows two ends, and two connectors are designated as front connector 72, rear connector 73 respectively.
Wherein front end end cover 4, rear end cap 5, extraction guide rod 63, front connector 72, rear connector 73, pipeline Hard link part 8, end head 10 are copper.
Line ball nut 62 adopts metal standard component.
The axis of described end shield guide rod 3 is datum axis.The relative position that forward and backward statement in following just adopts for convenience of description, and do not represent absolute position.
Front end end cover 4 arranges a center cavity 43, and the axis of center cavity 43 overlaps with described datum axis.The internal diameter of front end end cover 4 front portion is less than the internal diameter at rear portion, and at the internal diameter change place formation one inner plane step 41 radially that anterior, rear portion have a common boundary.The external diameter of front end end cover 4 front portion is also less than the external diameter at rear portion, and at the external diameter change place formation one outerplanar step 42 radially that anterior, rear portion have a common boundary.The front portion of front end end cover 4 is provided with external thread and is threaded connection in end shield shell 1.The rear portion of front end end cover 4 arranges internal thread.
In order to improve further and ensure the sealing property between front end end cover and end shield shell, better to protect end shield guide rod, to draw guide rod and extension line; Ensure the reliability of drawing, between the outerplanar step 42 and end shield shell 1 of described front end end cover 4, be provided with the first O-ring seal 11.
Rear end cap 5 also arranges a center cavity 51.The internal diameter of rear end cap 5 upper forepart is greater than the internal diameter at rear portion, and at the internal diameter change place formation one inner plane step 52 radially that anterior, rear portion have a common boundary.The external diameter of rear end cap 5 upper forepart is greater than the external diameter at rear portion, and at the external diameter change place formation one outerplanar step 53 radially that anterior, rear portion have a common boundary.The front portion of rear end cap 5 is connected by the internal thread of external thread with front end end cover 4 rear portion, and the center cavity 43 of front end end cover 4, center cavity 51 coaxial communication of rear end cap 5 form a Global Macros chamber.The rear portion of rear end cap 5 arranges external thread.
In order to improve further and ensure the sealing property between rear end cap and front end end cover, better to protect end shield guide rod, to draw guide rod and extension line; Ensure the reliability of drawing, be provided with the second O-ring seal 12 between the front end face of end cap 5 and the inner plane step 41 of front end end cover 4 in the rear.
In described extraction and stationary installation 6:
Described extraction guide rod 63 is made up of the polished rod section of front portion and the thread segment at rear portion.
The axis arranging the first blind hole 64, first blind hole 64 in described polished rod section overlaps with described datum axis.Rear end in described first blind hole 64 is equipped with the spring 65 flexible along datum axis direction.Being plugged in this first blind hole 64 and the rear end face of end shield guide rod 3 and described spring 65 close contact of described end shield guide rod 3 gap.
What the thread segment at described extraction guide rod 63 rear portion was arranged is external thread.The axis arranging the second blind hole 66, second blind hole 66 in described thread segment overlaps with described datum axis, and the front end edge radial direction of the second blind hole 66 is provided with four through holes 67.Through hole 67 is for connecting extension line, and extension line passes through hole and is reliably connected with extraction guide rod.
Described line ball nut 62 is assemblied on the thread segment of extraction guide rod 63.In order to be secured across the extension line of through hole 67, turn line ball nut 62, make line ball nut extension line is pressed on line ball nut 62 and draw between guide rod 63, thus secure extension line reliably, and ensure that extension line and draw the reliability be connected between guide rod 63.
Described insulating bushing 61 is provided with internal thread hole, and is also assemblied in by this internal thread hole on the thread segment of extraction guide rod 63.The external diameter of insulating bushing 61 front portion is greater than the internal diameter at rear end cap 5 rear portion, and the external diameter at insulating bushing 61 rear portion is less than the internal diameter at rear end cap 5 rear portion.The external diameter change place formation one outerplanar step 68 radially that insulating bushing 61 upper forepart, rear portion have a common boundary, the outerplanar step 68 of insulating bushing 61 coordinates with the inner plane step 52 of rear end cap 5 and forms position limiting structure.Namely insulating bushing 61 can support extraction guide rod 63, in the Global Macros chamber being arranged on front end end cover 4, rear end cap 5 formation making extraction guide rod 63 stable, extraction guide rod 63 can be insulated with rear end cap 5 again and separate; This external-adjuster insulating bushing 61 is drawing the position on guide rod 63, can adjust the tightness degree of the Contact of spring 65 and end shield guide rod 3, thus the reliability of drawing between guarantee end shield guide rod 3 and spring 65, can not occur to disconnect phenomenon.
In described metallic bellows soft connection component 7:
Described two connectors are made up of cylindrical shell 74, rear shrouding 75, the rear end being connected to cylindrical shell 74 that rear shrouding 75 seals, and cylindrical shell 74 is provided with internal thread.Described rear shrouding 75 is provided with through hole 76 along described datum axis.
Two ends of described first metallic bellows 71 be each passed through two connectors through hole 76 and in described cylindrical shell 74 radially extension form positive stop lug boss 77, the diameter of described positive stop lug boss 77 is greater than the diameter of described through hole 76.The internal thread of the cylindrical shell of described front connector 72 coordinates with the external thread at rear end cap 5 rear portion.
Pipeline Hard link part 8, is provided with center cavity 81, and the axis of center cavity 81 overlaps with described datum axis.Described pipeline Hard link part 8 comprises the first anterior external thread section 82, the boss section 83 at middle part and the rear linkage section 84 at rear portion.The external diameter of described boss section 83 is greater than the external diameter of the first external thread section 82, rear linkage section 84.First external thread section 82 is threaded with the rear connector 73 in described metallic bellows soft connection component 7.Rear linkage section 84 arranges an annular slot 85 in the periphery of center cavity, and the axis of annular slot 85 overlaps with described datum axis, and backwards, and internal ring wall 86 is provided with the spiral lamination coordinated with metallic bellows helical fissure to the opening of annular slot 85.
The inwall of the second metallic bellows 9, second metallic bellows 9 front end is tightened the internal ring wall 86 of the annular slot of pipeline Hard link part 8.In described pipeline Hard link part 8, the internal ring wall 86 of annular slot 85 is longer than the external annulus 87 of annular slot 85 backward.
End head 10, by cylindrical shell 101, rear shrouding 102, the rear end being connected to cylindrical shell 101 that rear shrouding 102 seals, cylindrical shell 101 is provided with the inside spin line coordinated with the helical fissure of the second metallic bellows 9; And be tightened on the rear end outer wall of the second metallic bellows 9 by this inside spin line, described rear shrouding 102 is provided with through hole 103 along described datum axis.
In order to further enhanced leaktightness effect, the reliability that protection extension line, guarantee are drawn, connector 72 before in described metallic bellows soft connection component 7, is provided with the 3rd O-ring seal 13 between the front end face of rear shrouding and the rear end face of described rear end cap 5.Connector 73 after in described metallic bellows soft connection component 7, is provided with the 4th O-ring seal 14 between the rear end face of rear shrouding and the front end face of described pipeline Hard link part 8.
During use, end shield guide rod, extraction guide rod, extension line form a conductive path, and electric current is passed through.One end of extension line is through through hole 67 and the conducting of extraction guide rod, and extension line successively through the first metallic bellows 71, pipeline Hard link part 8, second metallic bellows 9, and is drawn by the through hole 103 on shrouding 102 rear in end head 10.During on-line checkingi, need not climb up transformer body top, turn on the operations such as end cap, convenient and swift safe carrying out operates.Earthing mode like this outside protecting cover also can meet the demands.
Front end end cover 4, rear end cap 5, first metallic bellows 71, front connector 72, rear connector 73, pipeline Hard link part 8, second metallic bellows 9, end head 10 form a screening can, ensure the security of deriving structure.
Claims (3)
1. a guiding structure under special end shield monitored by bushing shell for transformer, comprises end shield shell, insulation barrier, end shield guide rod; It is characterized in that, the axis of described end shield guide rod is datum axis; Also comprise:
Front end end cover, arranges a center cavity; The internal diameter of front end end cover upper forepart is less than the internal diameter at rear portion, and at the internal diameter change place formation one inner plane step radially that anterior, rear portion have a common boundary; The external diameter of front end end cover upper forepart is also less than the external diameter at rear portion, and at the external diameter change place formation one outerplanar step radially that anterior, rear portion have a common boundary; The front portion of front end end cover is provided with external thread and is threaded connection in end shield shell, and the axis of center cavity overlaps with described datum axis; The rear portion of front end end cover arranges internal thread;
Rear end cap, also arranges a center cavity; The internal diameter of rear end cap upper forepart is greater than the internal diameter at rear portion, and at the internal diameter change place formation one inner plane step radially that anterior, rear portion have a common boundary; The external diameter of rear end cap upper forepart is greater than the external diameter at rear portion, and at the external diameter change place formation one outerplanar step radially that anterior, rear portion have a common boundary; The front portion of rear end cap is connected by the internal thread of external thread with front end end cover rear portion, and the center cavity of front end end cover, the center cavity coaxial communication of rear end cap form a Global Macros chamber; The rear portion of rear end cap arranges external thread;
Draw and stationary installation, comprise and draw guide rod, line ball nut, insulating bushing; Described extraction guide rod is made up of the polished rod section of front portion and the thread segment at rear portion, arranges the first blind hole in described polished rod section, and the axis of the first blind hole overlaps with described datum axis; Rear end in described first blind hole is equipped with the spring flexible along datum axis direction; Being plugged in this first blind hole and the rear end face of end shield guide rod and described spring close contact of described end shield guide rod gap; What the thread segment at described extraction guide rod rear portion was arranged is external thread; Arrange the second blind hole in described thread segment, the axis of the second blind hole overlaps with described datum axis, and the front end edge radial direction of the second blind hole is provided with four through holes; Described line ball nut is assemblied on thread segment; Described insulating bushing is provided with internal thread hole, and is also assemblied on described thread segment by this internal thread hole; The external diameter of insulating bushing front portion is greater than the internal diameter at rear end cap rear portion, and the external diameter at insulating bushing rear portion is less than the internal diameter at rear end cap rear portion; The external diameter change place formation one outerplanar step radially that insulating bushing upper forepart, rear portion have a common boundary, the outerplanar step of insulating bushing coordinates with the inner plane step of rear end cap and forms position limiting structure;
Metallic bellows soft connection component, comprise the first metallic bellows and be separately positioned on two connectors at the first metallic bellows two ends, two connectors are designated as front connector, rear connector respectively; Described two connectors are by cylindrical shell, rear shrouding composition, and the rear shrouding of two connectors is connected to the rear end of the cylindrical shell of corresponding connector respectively hermetically, and the cylindrical shell of two connectors is provided with internal thread; The rear shrouding of two connectors is equipped with through hole along described datum axis; Two ends of described first metallic bellows be each passed through two connectors through hole and in the cylindrical shell of two connectors radially extension form positive stop lug boss, the diameter of described positive stop lug boss is greater than the diameter of the through hole of two connectors; The internal thread of the cylindrical shell of described front connector coordinates with the external thread at described rear end cap rear portion;
Pipeline Hard link part, is provided with center cavity, and the axis of center cavity overlaps with described datum axis; Described pipeline Hard link part comprises the first anterior external thread section, the boss section at middle part and the rear linkage section at rear portion; The external diameter of described boss section is greater than the external diameter of the first external thread section, rear linkage section; First external thread section is threaded with the rear connector in described metallic bellows soft connection component; Rear linkage section arranges an annular slot in the periphery of center cavity, and the axis of annular slot overlaps with described datum axis, and backwards, and internal ring wall is provided with spiral lamination to the opening of annular slot,
Second metallic bellows, the inwall of the second metallic bellows front end is arranged on the internal ring wall of the annular slot of pipeline Hard link part; Spiral lamination on internal ring wall coordinates with the helical fissure of the second metallic bellows tightens;
End head, is made up of cylindrical shell, rear shrouding, the rear end being connected to the cylindrical shell of end head of the rear shrouding sealing of end head, and the cylindrical shell of end head is provided with the inside spin line coordinated with the helical fissure of the second metallic bellows; And be tightened on the rear end outer wall of the second metallic bellows by this inside spin line, the rear shrouding of described end head is provided with through hole along described datum axis.
2. guiding structure under special end shield monitored by a kind of bushing shell for transformer according to claim 1, it is characterized in that,
The first O-ring seal is provided with between the outerplanar step of described front end end cover and end shield shell;
The second O-ring seal is provided with between the front end face of described rear end cap and the inner plane step of front end end cover;
In described metallic bellows soft connection component, between the front end face of the rear shrouding of front connector and the rear end face of described rear end cap, be provided with the 3rd O-ring seal;
In described metallic bellows soft connection component, between the rear end face of the rear shrouding of rear connector and the front end face of described pipeline Hard link part, be provided with the 4th O-ring seal.
3. guiding structure under special end shield monitored by a kind of bushing shell for transformer according to claim 1 and 2, and it is characterized in that, in described pipeline Hard link part, the internal ring wall of annular slot is longer than the external annulus of annular slot backward.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310269132.XA CN103344792B (en) | 2013-06-28 | 2013-06-28 | Guiding structure under special end shield monitored by a kind of bushing shell for transformer |
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| CN201310269132.XA CN103344792B (en) | 2013-06-28 | 2013-06-28 | Guiding structure under special end shield monitored by a kind of bushing shell for transformer |
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| CN103344792B true CN103344792B (en) | 2015-08-19 |
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| CN104965115A (en) * | 2015-06-25 | 2015-10-07 | 国网山东省电力公司济南供电公司 | Capacitive device end screen current lossless sampling device |
| CN113659371B (en) * | 2021-08-13 | 2023-08-25 | 云南电网有限责任公司电力科学研究院 | Electric connection structure for improving operation reliability of sleeve |
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| CN202661488U (en) * | 2012-05-22 | 2013-01-09 | 山东电力集团公司济南供电公司 | Special end screen leading out structure for online monitoring |
| CN202840157U (en) * | 2012-09-24 | 2013-03-27 | 广州供电局有限公司 | Tap adapter |
| CN103050239A (en) * | 2012-12-17 | 2013-04-17 | 浙江省电力公司电力科学研究院 | Thread type lead-out device of transformer bushing end screen signal |
| CN103050240A (en) * | 2012-12-17 | 2013-04-17 | 浙江省电力公司电力科学研究院 | Lead-out device of transformer bushing end screen signal |
| CN203324306U (en) * | 2013-06-28 | 2013-12-04 | 国家电网公司 | Transformer bushing monitoring dedicated end screen lowering structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103344792A (en) | 2013-10-09 |
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Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: Jinan Power Supply Company, State Grid Shandong Electric Power Company Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: Jinan Power Supply Co., Ltd. of Shandong Electric Power Corporation |
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Free format text: CORRECT: APPLICANT; FROM: JINAN POWER SUPPLY COMPANY OF SHANDONG ELECTRIC POWER CORPORATION TO: JINAN POWER SUPPLY COMPANY, STATE GRID SHANDONG ELECTRIC POWER COMPANY |
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