CN103344792A - End screen downwards leading structure for monitoring transformer sleeve - Google Patents
End screen downwards leading structure for monitoring transformer sleeve Download PDFInfo
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- CN103344792A CN103344792A CN201310269132XA CN201310269132A CN103344792A CN 103344792 A CN103344792 A CN 103344792A CN 201310269132X A CN201310269132X A CN 201310269132XA CN 201310269132 A CN201310269132 A CN 201310269132A CN 103344792 A CN103344792 A CN 103344792A
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Abstract
The invention discloses an end screen downwards leading structure for monitoring a transformer sleeve. The end screen downwards leading structure comprises an end screen outer shell, an insulating baffle and an end screen guiding rod, and is characterized by further comprising a front end cover, a rear end cover, a leading-out and fixing device, a metal corrugated pipe soft connecting assembly, a pipe hard connecting part, a second metal corrugated pipe and a tail end. The front portion of the front end cover is connected with the end screen outer shell. The front portion of the rear end cover is connected with the rear portion of the front end cover in a threaded mode. The front end cover and the rear end cover are communicated to form an overall protection cavity. The leading-out and fixing device comprises a leading-out guiding rod, a line pressing nut and an insulating lining. A first blind hole is formed in the polished rod section on the front portion of the leading-out guiding rod. A spring is arranged inside the first blind hole. The end screen guiding rod is inserted in the first blind hole in an interstitial and connected mode and contacted with the spring. A second blind hole is formed in the threaded section on the rear portion of the leading-out guiding rod. Four through holes are formed in the second blind hole in the radial direction. The line pressing nut is assembled on the threaded section. The insulating lining is assembled on the threaded section. The tail end is composed of a cylinder body and a real sealing plate. The end screen downwards leading structure for monitoring the transformer sleeve can effectively protect led-out wires, guarantee that the end screen is good in grounding, reliable in insulating, good in sealing and durable, and ensure safe operation of the end screen.
Description
Technical field
The present invention relates to the transformer technology field, especially the deriving structure of transformer end screen.
Background technology
Along with the continuous development of electrical network and electrical network scale constantly enlarge, it is imperative to implement the grid equipment repair based on condition of component.And the correct collection of equipment state detection information is the basis of repair based on condition of component, can make assessment to equipment health status and fault progression trend, rationally reduces the cost of overhaul, improves overhaul efficiency, the support equipment reliability service.Bushing shell for transformer is as one of important component part of transformer, be one of equipment of crucial importance that ensures electric power netting safe running, timely monitoring to its state seems particularly important, for timely discovery power grid security hidden danger, ensures that electric power netting safe running has significance.
The bushing shell for transformer of having installed at present all can not satisfy and under the power-off condition it not carried out the test condition of state-detection, all need test detection under power-off condition.Exist sense cycle long, test figure can not the accurate response actual conditions etc. many shortcomings.Therefore need reequip existing structure.Invent the special-purpose end of a kind of bushing shell for transformer monitoring screen deriving structure, make the tester can be under power-off condition not safety, finish detection to the quantity of state of bushing shell for transformer accurately and rapidly, guarantee that simultaneously end screen ground connection is good, insulation is reliable, sealing, its safe operation of durable guarantee.
Summary of the invention
In order to overcome the shortcoming that above-mentioned prior art exists, the object of the present invention is to provide the special-purpose end of a kind of bushing shell for transformer monitoring screen guiding structure down, can be under power-off condition not safety, finish detection to the quantity of state of bushing shell for transformer accurately and rapidly, guarantee that simultaneously end screen ground connection is good, insulation is reliable, sealing, its safe operation of durable guarantee.
In order to address the above problem, the present invention by the following technical solutions: the special-purpose end of a kind of bushing shell for transformer monitoring screen is guiding structure down, comprises end screen shell, insulation barrier, end screen guide rod; It is characterized in that the axis of described end screen 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 forwardly, the internal diameter varies place that has a common boundary, rear portion forms radially an inner plane step; The external diameter of front end end cover upper forepart is also less than the external diameter at rear portion, and forwardly, rear portion external diameter variation place of having a common boundary forms radially an outerplanar step; The front portion of front end end cover is provided with external thread and by being threaded in the screen shell of end, 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 forwardly, the internal diameter varies place that has a common boundary, rear portion forms radially an inner plane step; The external diameter of rear end cap upper forepart is greater than the external diameter at rear portion, and forwardly, rear portion external diameter variation place of having a common boundary forms radially an outerplanar step; The front portion of rear end cap is connected by the internal thread of external thread with the front end end cover rear portion, and the center cavity coaxial communication of the center cavity of front end end cover, rear end cap forms 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; The described guide rod of drawing is made up of the polished rod section of front portion and the thread segment at rear portion, in the described polished rod section first blind hole is set, and the axis of first blind hole overlaps with described datum axis; Rear end in described first blind hole is equipped with along the flexible spring of datum axis direction; This first blind hole rear end face interior and end screen guide rod that is plugged in screen guide rod gap, described end closely contacts with described spring; Described thread segment setting of drawing the guide rod rear portion be external thread; Second blind hole is set in the described thread segment, and the axis of second blind hole overlaps with described datum axis, and the front end edge of second blind hole radially is provided with four through holes; Described line ball nut is assemblied on the thread segment; Described insulating bushing is provided with internal thread hole, and also is assemblied on the 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 variation place formation one outerplanar step radially that insulating bushing upper forepart, rear portion have a common boundary, the outerplanar step of insulating bushing cooperates the formation position limiting structure with the inner plane step of rear end cap;
The metallic bellows soft connection component comprises first metallic bellows and is separately positioned on two connectors at the first metallic bellows two ends, and two connectors are designated as preceding connector, back connector respectively; Described connector is made up of cylindrical shell, back shrouding, the rear end that is connected cylindrical shell of back shrouding sealing, and cylindrical shell is provided with internal thread; The described datum axis in described shrouding upper edge, back is provided with through hole; Two ends of described first metallic bellows pass the through hole of two connectors respectively 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 connector cooperates with the external thread at described rear end cap rear portion before described;
The hard web member of pipeline is provided with center cavity, and the axis of center cavity overlaps with described datum axis; The hard web member of described pipeline comprises anterior first external thread section, the boss section at middle part and the back linkage section at rear portion; The external diameter of described boss section is greater than the external diameter of first external thread section, back linkage section; First external thread section is threaded with back connector in the described metallic bellows soft connection component; Back linkage section arranges an annular slot in the periphery of center cavity, and the axis of annular slot overlaps with described datum axis, the opening of annular slot backwards, and internal ring wall is provided with the spiral lamination that cooperates with the metallic bellows helical fissure,
Second metallic bellows is tightened the internal ring wall of the annular slot of the hard web member of pipeline on the inwall of the second metallic bellows front end;
Terminal head, by cylindrical shell, back shrouding, the rear end that is connected cylindrical shell of back shrouding sealing, cylindrical shell is provided with the inside spin line that cooperates with the helical fissure of second metallic bellows; And be tightened in by this inside spin line on the rear end outer wall of second metallic bellows, the described datum axis in described shrouding upper edge, back is provided with through hole.
As further technical scheme: this end screen is down in guiding structure,
Be provided with first O-ring seal between the outerplanar step of described front end end cover and the end screen shell;
Be provided with second O-ring seal between the inner plane step of the front end face of described rear end cap and front end end cover;
Connector before in the described metallic bellows soft connection component is provided with the 3rd O-ring seal between the front end face of back shrouding and the rear end face of described rear end cap;
The back connector is provided with the 4th O-ring seal between the front end face of the rear end face of back shrouding and the hard web member of described pipeline in the described metallic bellows soft connection component.
Further technical scheme: in the guiding structure, in the hard web member of described pipeline, the internal ring wall of annular slot is longer than the external annulus of annular slot backward under this end screen.
The invention has the beneficial effects as follows: use end of the present invention screen guiding structure down, the tester can be under power-off condition not safety, finish detection to the quantity of state of bushing shell for transformer accurately and rapidly, guarantee that simultaneously end screen ground connection is good, insulation is reliable, sealing, its safe operation of durable guarantee.
Description of drawings
The present invention is described further below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of the embodiment of the invention;
Among the figure: 1 end screen shell, 2 insulation barriers, 3 end screen 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, 72 preceding connectors, 73 back connectors, 74 cylindrical shells, 75 back shroudings, 76 through holes, 77 positive stop lug boss; The hard web member of 8 pipelines, 81 center cavities, 82 first external thread sections, 83 boss sections, 84 back linkage sections, 85 annular slots, 86 internal ring walls, 87 external annulus, 9 second metallic bellowss, 10 terminal heads, 101 cylindrical shells, 102 back shroudings, 103 through holes.
Embodiment
End screen as shown in Figure 1 is guiding structure down, comprises end screen shell 1, insulation barrier 2, end screen guide rod 3; Also comprise front end end cover 4, rear end cap 5, draw with stationary installation 6, metallic bellows soft connection component 7, the hard web member 8 of pipeline, second metallic bellows 9, terminal 10.
Draw and comprise with stationary installation 6 and to draw guide rod 63, line ball nut 62, insulating bushing 61.
Metallic bellows soft connection component 7 comprises first metallic bellows 71 and is separately positioned on two connectors at the first metallic bellows two ends that two connectors are designated as preceding connector 72, back connector 73 respectively.
Wherein front end end cover 4, rear end cap 5, draw guide rod 63, preceding connector 72, back connector 73, the hard web member 8 of pipeline, be copper for terminal 10.
Line ball nut 62 adopts metal standard component to get final product.
The axis of described end screen guide rod 3 is datum axis.The relative position that forward and backward statement in following is just adopted for convenience of description, and do not represent the 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 portions is less than the internal diameter at rear portion, and forwardly, the internal diameter varies place that has a common boundary, rear portion forms radially an inner plane step 41.The external diameter of front end end cover 4 front portions is also less than the external diameter at rear portion, and forwardly, rear portion external diameter variation place of having a common boundary forms radially an outerplanar step 42.The front portion of front end end cover 4 is provided with external thread and shields in the shell 1 by being threaded in the end.The rear portion of front end end cover 4 arranges internal thread.
In order further to improve and to guarantee sealing property between front end end cover and the end screen shell, shield guide rod, draw guide rod and extension line with the better protection end; The reliability that assurance is drawn is provided with first O-ring seal 11 in outerplanar step 42 and last the screen between the shell 1 of described front end end cover 4.
Rear end cap 5 also arranges a center cavity 51.The internal diameter of rear end cap 5 upper foreparts is greater than the internal diameter at rear portion, and forwardly, the internal diameter varies place that has a common boundary, rear portion forms radially an inner plane step 52.The external diameter of rear end cap 5 upper foreparts is greater than the external diameter at rear portion, and forwardly, rear portion external diameter variation place of having a common boundary forms radially an outerplanar step 53.The front portion of rear end cap 5 is connected by the internal thread of external thread with front end end cover 4 rear portions, and center cavity 51 coaxial communication of the center cavity 43 of front end end cover 4, rear end cap 5 form a Global Macros chamber.The rear portion of rear end cap 5 arranges external thread.
For the sealing property between further raising and assurance rear end cap and the front end end cover, shield guide rod, draw guide rod and extension line with the better protection end; The reliability that assurance is drawn is provided with second O-ring seal 12 between the inner plane step 41 of the front end face of described rear end cap 5 and front end end cover 4.
Described draw with stationary installation 6 in:
The described guide rod 63 of drawing is made up of the polished rod section of front portion and the thread segment at rear portion.
The axis that first blind hole, 64, the first blind holes 64 are set in the described polished rod section overlaps with described datum axis.Rear end in described first blind hole 64 is equipped with along the flexible spring 65 of datum axis direction.These first blind hole, 64 rear end faces interior and end screen guide rod 3 that are plugged in screen guide rod 3 gaps, described end closely contact with described spring 65.
Described thread segment setting of drawing guide rod 63 rear portions be external thread.The axis that second blind hole, 66, the second blind holes 66 are set in the described thread segment overlaps with described datum axis, and the front end edge of second blind hole 66 radially is provided with four through holes 67.Through hole 67 is used for connecting extension line, extension line pass through hole and with draw guide rod and reliably be connected.
Described line ball nut 62 is assemblied on the thread segment of drawing guide rod 63.In order fixedly to pass the extension line of through hole 67, turn line ball nut 62, make the line ball nut that extension line is pressed on line ball nut 62 and draw between the guide rod 63, thereby fixed extension line reliably, and guaranteed extension line and drawn the reliability that is connected between the guide rod 63.
Described insulating bushing 61 is provided with internal thread hole, and also is assemblied on the thread segment of drawing guide rod 63 by this internal thread hole.The external diameter of insulating bushing 61 front portions is greater than the internal diameter at rear end cap 5 rear portions, and the external diameter at insulating bushing 61 rear portions is less than the internal diameter at rear end cap 5 rear portions.The external diameter variation place formation one outerplanar step 68 radially that insulating bushing 61 upper foreparts, rear portion have a common boundary, the outerplanar step 68 of insulating bushing 61 cooperates the formation position limiting structure with the inner plane step 52 of rear end cap 5.Insulating bushing 61 namely can support drawing guide rod 63, makes to draw stable being installed in the Global Macros chamber that front end end cover 4, rear end cap 5 form of guide rod 63, can separate with rear end cap 5 insulation drawing guide rod 63 again; Adjust insulating bushing 61 in addition in the position of drawing on the guide rod 63, can adjust spring 65 and shield the tightness degree that contacts between the guide rod 3 with the end, thereby guarantee the last reliability of drawing between guide rod 3 and the spring 65 of shielding, can not disconnect phenomenon.
In the described metallic bellows soft connection component 7:
Described two connectors are made up of cylindrical shell 74, back shrouding 75, the rear end that is connected cylindrical shell 74 of back shrouding 75 sealings, and cylindrical shell 74 is provided with internal thread.The described datum axis in described shrouding 75 upper edges, back is provided with through hole 76.
Two ends of described first metallic bellows 71 pass the through hole 76 of two connectors respectively 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 connector 72 cooperates with the external thread at rear end cap 5 rear portions before described.
The hard web member 8 of pipeline is provided with center cavity 81, and the axis of center cavity 81 overlaps with described datum axis.The hard web member 8 of described pipeline comprises anterior first external thread section 82, the boss section 83 at middle part and the back linkage section 84 at rear portion.The external diameter of described boss section 83 is greater than the external diameter of first external thread section 82, back linkage section 84.First external thread section 82 is threaded with back connector 73 in the described metallic bellows soft connection component 7.Back linkage section 84 arranges an annular slot 85 in the periphery of center cavity, the axis of annular slot 85 overlaps with described datum axis, the opening of annular slot 85 backwards, and internal ring wall 86 is provided with the spiral lamination that cooperates with the metallic bellows helical fissure.
Tighten the internal ring wall 86 of the annular slot of the hard web member 8 of pipeline on the inwall of second metallic bellows, 9, the second metallic bellowss, 9 front ends.In the hard web member 8 of described pipeline, the internal ring wall 86 of annular slot 85 is longer than the external annulus 87 of annular slot 85 backward.
Terminal 10, by cylindrical shell 101, back shrouding 102, the rear end that is connected cylindrical shell 101 of back shrouding 102 sealings, cylindrical shell 101 is provided with the inside spin line that cooperates with the helical fissure of second metallic bellows 9; And be tightened in by this inside spin line on the rear end outer wall of second metallic bellows 9, the described datum axis in described shrouding 102 upper edges, back is provided with through hole 103.
For further enhanced leaktightness effect, the reliability that protection extension line, assurance are drawn, preceding connector 72 is provided with the 3rd O-ring seal 13 in the described metallic bellows soft connection component 7 between the rear end face of the front end face of back shrouding and described rear end cap 5.Back connector 73 is provided with the 4th O-ring seal 14 between the front end face of the rear end face of back shrouding and the hard web member 8 of described pipeline in the described metallic bellows soft connection component 7.
During use, end screen guide rod, draw guide rod, extension line forms a conductive path, makes electric current pass through.One end of extension line passes through hole 67 and draws the guide rod conducting, and extension line passes first metallic bellows 71, the hard web member 8 of pipeline, second metallic bellows 9 successively, and is drawn by the through hole 103 on the back shrouding 102 in terminal 10.During online detection, need not climb up the transformer body top, turn on operations such as end cap, convenient and swift safe operating.Earthing mode outside protecting cover also can meet the demands like this.
Front end end cover 4, rear end cap 5, first metallic bellows 71, preceding connector 72, back connector 73, the hard web member 8 of pipeline, second metallic bellows 9, terminal 10 formation, one screening can guarantee the security of deriving structure.
Claims (3)
1. the special-purpose last guiding structure down that shields of bushing shell for transformer monitoring comprises end screen shell, insulation barrier, the last guide rod that shields; It is characterized in that the axis of described end screen 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 forwardly, the internal diameter varies place that has a common boundary, rear portion forms radially an inner plane step; The external diameter of front end end cover upper forepart is also less than the external diameter at rear portion, and forwardly, rear portion external diameter variation place of having a common boundary forms radially an outerplanar step; The front portion of front end end cover is provided with external thread and by being threaded in the screen shell of end, 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 forwardly, the internal diameter varies place that has a common boundary, rear portion forms radially an inner plane step; The external diameter of rear end cap upper forepart is greater than the external diameter at rear portion, and forwardly, rear portion external diameter variation place of having a common boundary forms radially an outerplanar step; The front portion of rear end cap is connected by the internal thread of external thread with the front end end cover rear portion, and the center cavity coaxial communication of the center cavity of front end end cover, rear end cap forms 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; The described guide rod of drawing is made up of the polished rod section of front portion and the thread segment at rear portion, in the described polished rod section first blind hole is set, and the axis of first blind hole overlaps with described datum axis; Rear end in described first blind hole is equipped with along the flexible spring of datum axis direction; This first blind hole rear end face interior and end screen guide rod that is plugged in screen guide rod gap, described end closely contacts with described spring; Described thread segment setting of drawing the guide rod rear portion be external thread; Second blind hole is set in the described thread segment, and the axis of second blind hole overlaps with described datum axis, and the front end edge of second blind hole radially is provided with four through holes; Described line ball nut is assemblied on the thread segment; Described insulating bushing is provided with internal thread hole, and also is assemblied on the 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 variation place formation one outerplanar step radially that insulating bushing upper forepart, rear portion have a common boundary, the outerplanar step of insulating bushing cooperates the formation position limiting structure with the inner plane step of rear end cap;
The metallic bellows soft connection component comprises first metallic bellows and is separately positioned on two connectors at the first metallic bellows two ends, and two connectors are designated as preceding connector, back connector respectively; Described connector is made up of cylindrical shell, back shrouding, the rear end that is connected cylindrical shell of back shrouding sealing, and cylindrical shell is provided with internal thread; The described datum axis in described shrouding upper edge, back is provided with through hole; Two ends of described first metallic bellows pass the through hole of two connectors respectively 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 connector cooperates with the external thread at described rear end cap rear portion before described;
The hard web member of pipeline is provided with center cavity, and the axis of center cavity overlaps with described datum axis; The hard web member of described pipeline comprises anterior first external thread section, the boss section at middle part and the back linkage section at rear portion; The external diameter of described boss section is greater than the external diameter of first external thread section, back linkage section; First external thread section is threaded with back connector in the described metallic bellows soft connection component; Back linkage section arranges an annular slot in the periphery of center cavity, and the axis of annular slot overlaps with described datum axis, the opening of annular slot backwards, and internal ring wall is provided with the spiral lamination that cooperates with the metallic bellows helical fissure,
Second metallic bellows is tightened the internal ring wall of the annular slot of the hard web member of pipeline on the inwall of the second metallic bellows front end;
Terminal head, by cylindrical shell, back shrouding, the rear end that is connected cylindrical shell of back shrouding sealing, cylindrical shell is provided with the inside spin line that cooperates with the helical fissure of second metallic bellows; And be tightened in by this inside spin line on the rear end outer wall of second metallic bellows, the described datum axis in described shrouding upper edge, back is provided with through hole.
2. guiding structure under the screen of the special-purpose end of a kind of bushing shell for transformer monitoring according to claim 1 is characterized in that,
Be provided with first O-ring seal between the outerplanar step of described front end end cover and the end screen shell;
Be provided with second O-ring seal between the inner plane step of the front end face of described rear end cap and front end end cover;
Connector before in the described metallic bellows soft connection component is provided with the 3rd O-ring seal between the front end face of back shrouding and the rear end face of described rear end cap;
The back connector is provided with the 4th O-ring seal between the front end face of the rear end face of back shrouding and the hard web member of described pipeline in the described metallic bellows soft connection component.
3. guiding structure under the screen of the special-purpose end of a kind of bushing shell for transformer monitoring according to claim 1 and 2 is characterized in that in the hard web member of described pipeline, the internal ring wall of annular slot is longer than the external annulus of annular slot backward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN103344792A true CN103344792A (en) | 2013-10-09 |
| CN103344792B 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 |
| CN113659371A (en) * | 2021-08-13 | 2021-11-16 | 云南电网有限责任公司电力科学研究院 | Electric connection structure for improving running reliability of sleeve |
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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 |
| CN113659371A (en) * | 2021-08-13 | 2021-11-16 | 云南电网有限责任公司电力科学研究院 | Electric connection structure for improving running reliability of sleeve |
| 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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| Publication number | Publication date |
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| CN103344792B (en) | 2015-08-19 |
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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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