CN102376506A - Full-insulated fuse for buried combined transformer - Google Patents
Full-insulated fuse for buried combined transformer Download PDFInfo
- Publication number
- CN102376506A CN102376506A CN2011101686467A CN201110168646A CN102376506A CN 102376506 A CN102376506 A CN 102376506A CN 2011101686467 A CN2011101686467 A CN 2011101686467A CN 201110168646 A CN201110168646 A CN 201110168646A CN 102376506 A CN102376506 A CN 102376506A
- Authority
- CN
- China
- Prior art keywords
- fuse
- insulating cylinder
- cylinder
- combined transformer
- insulating
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 238000009413 insulation Methods 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 239000003063 flame retardant Substances 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 5
- 229920001195 polyisoprene Polymers 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 238000002955 isolation Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract 2
- 238000012856 packing Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 210000002421 cell wall Anatomy 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a full-insulated fuse for a buried combined transformer. The full-insulated fuse comprises an insulating cylinder, a fuse wire, conducting spring rings, a moving contact device, a sealing plug and a sealing cover, wherein the fuse wire is correspondingly inserted into the insulating cylinder; the conducting spring rings are respectively sleeved on conducting electrodes at the upper end and the lower end of the fuse wire; the moving contact is arranged in the insulating sleeve and is sleeved on the conducting electrode at the upper end of the fuse wire; and the sealing cover is used for covering the sealing plug sleeved at the top end of the moving contact device by screwing at the top end of the insulating cylinder. By adopting the technical scheme, the invention has the advantages of small size, simple structure, simpleness and convenience for mounting and operating, favorable integral strength and favorable insulating, waterproof and explosion-proof effects. The effective isolation of the fuse wire from an insulating medium is realized; and the full-insulated fuse can be used under various environment conditions without adding other auxiliary elements, is suitably arranged on an oil-filled transformer, an oil switch and SF6 electrical equipment for over-current or short-circuit protection and is especially suitably installed in the buried combined transformer.
Description
Technical field
The present invention relates to be used on the following electric pressure power equipment of a kind of 20kV of being installed on the technical field of the fuse of overcurrent or short-circuit protection, refer in particular to a kind of all insulation fuse that is used for buried combined transformer.
Background technology
The install and use mode of existing fuse on buried combined transformer: a kind of mode is that fuse directly is fixedly installed in the fuel tank of transformer and is immersed in the oil; Though this mode has solved the problem of insulation and waterproof; But to open fuel tank cap when changing; Very inconvenient, and will pollute transformer oil after the fusing of the fuse failover of fuse, quicken the deterioration of oil; It number is 99236278.4 dried cartridge fuse that another kind of mode is to use like national patent, though this mode has solved the isolation of fuse and transformer oil, the problem of being convenient to change, fails to solve the problem of waterproof.The poor seal of above-mentioned dried cartridge fuse top end opening can not immerse in the water and move.Therefore when reality was used, its head portion must install enclosed hood additional, is closed through enclosed hood to reach good waterproof effect.The enclosed hood volume is big in addition, processed complex, directly causes volume increase, the cost of transformer to rise.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide that a kind of volume is little, simple in structure, fitting operation is easy, be fit to be installed in all insulation fuse of the usefulness of making overcurrent or short-circuit protection on the buried combined transformer.
For realizing above-mentioned purpose; Technical scheme provided by the present invention is: a kind of all insulation fuse that is used for buried combined transformer; It includes insulating cylinder, fuse, power spring circle, trigger device, sealing plug, seal cover; Wherein, the fuse correspondence is inserted in the insulating cylinder, and the power spring circle is enclosed within fuse respectively up and down on the conductive electrode at two ends; Trigger device places in the insulating cylinder, and is enclosed within on the conductive electrode of fuse upper end; Seal cover covers the sealing plug that is enclosed within the trigger device top through twisting the top that is combined in insulating cylinder.
One end of described insulating cylinder is closed, its other end opening; Its external structure is flanged (FLGD) segmentation cylinder, and is provided with the full skirt that increases creepage distance and is positioned at the outside metal swivel nut of protrusion insulating cylinder below the full skirt at the outer surface that the outer surface of insulating cylinder top cylinder is provided with screw thread and middle part cylinder; Its internal structure is divided into three sections of upper, middle and lower, and its epimere is cylindricality duct short, broad; Its stage casing is long, narrower cylindricality duct, and the hole wall place of this duct front end is embedded with the threaded becket of inwall, and becket is connected with metal swivel nut in the middle part of the insulating cylinder through conductive metal sheet; Its hypomere is pre-buried section, is embedded with the cup-shaped fixed contact with the same axis of epimere and stage casing in the insulating cylinder bottom; The fixed contact upper end communicates with the stage casing, and the insulating cylinder outside is exposed in its lower end, and is provided with a screw.
Described trigger device upper end is flanged (FLGD) hexagon insulated handle, and its lower end is embedded with the threaded cylindricality metallic sheath of outer wall, and the metallic sheath end is provided with flange.
One end of described sealing plug is closed, its other end opening; Its external structure is flanged (FLGD) cylinder, and is provided with the multiple tracks annular groove at cartridge outer surface, and is embedded with the elastic caoutchouc circle in the groove; The inside of sealing plug is provided with the cylindricality duct.
One end of described seal cover is closed, its other end opening; Its external structure is the cylinder of top band hexagon flange; Its inside is provided with the threaded cylindricality of inwall duct.
Described insulating cylinder, sealing plug and seal cover are by high-intensity fire-retardant solid insulating material manufacturing.
Described fixed contact is by the conductive metallic material manufacturing, and its surface is coated with silver conductive film.
Described power spring circle is by the beryllium copper manufacturing, and its surface is coated with silver conductive film.
The present invention is compared with prior art: have that volume is little, simple in structure, fitting operation is easy, the advantage of good integral strength; Realized that not only the fuse of fuse and effective isolation of dielectric also have good insulation performance, waterproof, explosion-proof effect, need not to increase other auxiliary member and just can under various environmental conditions, use.Be fit to be installed on the usefulness of making overcurrent or short-circuit protection on oily change, oil switch, the SF6 electric equipment, be particluarly suitable for installing and using on the buried combined transformer.
Description of drawings
Fig. 1 is the whole assembling of the present invention outside drawing.
Fig. 2 is the whole sectional structure chart of the present invention.
Fig. 3 is the outside drawing of insulating cylinder among the present invention.
Fig. 4 is the outside drawing of fuse among the present invention.
Fig. 5 is the outside drawing of power spring circle among the present invention.
Fig. 6 is the outside drawing of trigger device among the present invention.
Fig. 7 is the outside drawing of sealing plug among the present invention.
Fig. 8 is the outside drawing of seal cover among the present invention.
Embodiment
Below in conjunction with specific embodiment the present invention is described further.
Shown in accompanying drawing 1 to accompanying drawing 8; Preferred embodiment of the present invention includes insulating cylinder 1, fuse 2, power spring circle 3, trigger device 4, sealing plug 5, seal cover 6; Wherein, fuse 2 correspondences are inserted in the insulating cylinder 1, and power spring circle 3 is enclosed within respectively on the conductive electrode at fuse two ends about in the of 2; Trigger device 4 places in the insulating cylinder 1, and is enclosed within on the conductive electrode of fuse 2 upper ends; Seal cover 6 covers the sealing plug 5 that is enclosed within trigger device 4 tops through twisting the top that is combined in insulating cylinder 1.
Described insulating cylinder 1 is by high-intensity fire-retardant solid insulating material manufacturing, and the one of which end is closed, other end opening; Its external structure is flanged (FLGD) segmentation cylinder, and is provided with the full skirt 22 that increases creepage distance and is positioned at the outside metal swivel nut 23 of protrusion insulating cylinder 1 below the full skirt 22 at the outer surface that the outer surface of insulating cylinder 1 top cylinder is provided with screw thread and middle part cylinder; Its internal structure is divided into three sections of upper, middle and lower, and its epimere is cylindricality duct 8 short, broad; Its stage casing is long, narrower cylindricality duct 21, and the hole wall place of this duct front end is embedded with the threaded becket 19 of inwall, and becket 19 is connected through the metal swivel nut 23 of conductive metal sheet with insulating cylinder 1 middle part; Its hypomere is pre-buried section, is embedded with the cup-shaped fixed contact 24 with the same axis of epimere and stage casing in insulating cylinder 1 bottom; Fixed contact 24 upper ends communicate with the stage casing, and insulating cylinder 1 outside is exposed in its lower end, and are provided with a screw 25.During installation: insulating cylinder 1 makes on its housing that is fixed on power equipment through to the sealing of flange section with compress, and its lower end is immersed in the dielectric and the metal swivel nut 23 through screw on the static contact head device and cylinder middle part is fixedly connected with electric equipment.
Described fuse is ready-made standard component, and its performance parameter meets GB15166.2 national standard and IEC282-1 international standard.The user is as long as select for use by desired volume.During installation: also fixing in the duct of fuse insertion insulating cylinder, realize fuse and the effective isolation of dielectric and the facility of replacing.
Described power spring circle 3 is by the beryllium copper punch forming, and Quenching Treatment, and the surface is coated with silver conductive film.Power spring circle 3 has better elastic, conductivity, fatigue performance.Power spring circle 3 uses as the auxiliary equipment of fuse 2, is placed in during installation on the electrode at fuse 2 two ends, guarantees the continuity and the reliability that are electrically connected.
Described trigger device 4 upper ends are flanged 15 hexagon insulated handle 14, and its lower end is embedded with the threaded cylindricality metallic sheath 20 of outer wall, and metallic sheath 20 ends are provided with flange.During installation, the metallic sheath 20 on the trigger device 4 fastens each other through the becket in screw thread and insulating cylinder 1 duct 19 fuse 2 is fixed in the duct of insulating cylinder, realizes being electrically connected between trigger device and fuse, the fixed contact three.And be provided with the caulking gum packing ring at the flange 15 of insulated handle 14 and the junction of insulating cylinder 1 inwall boss, thereby reach good insulation performance, waterproof effect through the cooperation of caulking gum packing ring.
Described sealing plug 5 is by high-intensity fire-retardant solid insulating material manufacturing, and the one of which end is closed, other end opening; Its external structure is flanged 9 cylinder, and is provided with multiple tracks annular groove 12 at cartridge outer surface, and is embedded with elastic caoutchouc circle 13 in the groove 12; The inside of sealing plug 5 is provided with the cylindricality duct.During installation: its damaged surface and insulating cylinder 1 inner cylindricality cell walls form matched in clearance more closely; And elastic caoutchouc circle 13 sides in the groove 12 and above-mentioned cell walls form interference fit very closely; And be provided with the caulking gum packing ring at the flange 9 of sealing plug 5 and the junction on edge, insulating cylinder 1 hole, thereby reach good insulation performance, waterproof effect.
Described seal cover 6 is by high-intensity fire-retardant solid insulating material manufacturing, and the one of which end is closed, other end opening; Its external structure is the cylinder of top band hexagon flange 7; Its inside is provided with the threaded cylindricality of inwall duct.During installation: seal cover 6 fastens with the screw thread cylinder at insulating cylinder 1 top each other; And the junction of between is provided with the caulking gum packing ring; The openend complete closed at insulating cylinder 1 top is got up in cooperation through the caulking gum packing ring, thereby reaches good insulation performance, waterproof effect.
The present invention is installing and using its first step of process; Insulating cylinder 1 is through to the sealing of flange section with compress; Make on its housing that is fixed on power equipment, its lower end is immersed in the dielectric and through screw 25 on the fixed contact device 24 and the metal swivel nut 23 in the middle part of the cylinder and is fixedly connected with electric equipment.In second step, after the conductive electrode at fuse two ends about in the of 2 puts power spring circle 3, fuse 2 is inserted in the duct 21 of insulating cylinder 1.In the 3rd step, trigger device 4 is put in the duct 21 of insulating cylinder 1, and utilized insulated handle 14 to tighten.Metallic sheath 20 on the trigger device 4 fastens through screw thread with the pre-buried becket 19 in 21 wall places, duct, and fuse 2 is fixed in the duct 21, realizes being electrically connected between trigger device 4 and fuse 2, fixed contact 24 threes.And the flange on the trigger device 4 15 is provided with caulking gum packing ring 10 with the junction of insulating cylinder 1 inwall boss 18, and the sealing through rubber washer 10 reaches good insulation performance, waterproof effect.The 4th step; Sealing plug 5 is pressed in the duct 8 of insulating cylinder 1 into; Utilize the elastic caoutchouc circle 13 of setting-in in the sealing plug 5 damaged surface grooves 12 to form interference fit very closely with cell walls; And the junction on flange 9 and edge, hole is provided with caulking gum packing ring 10, thereby reaches good insulation performance, waterproof effect.The 5th step was placed in seal cover 6 on the screw thread cylinder 11 on insulating cylinder 1 top, and utilizes hexagon flange 7 to tighten, and both fasten through screw thread, simultaneously sealing plug 5 are compressed.And be provided with caulking gum packing ring 10 in both junctions, realize the complete closed at insulating cylinder 1 top end opening place, reach good insulation performance, waterproof effect.
The embodiment of the above is not to limit practical range of the present invention with this only as preferred embodiment of the present invention, so the variation that all structures according to the present invention, shape, principle are done all should be covered by in protection scope of the present invention.
Claims (8)
1. all insulation fuse that is used for buried combined transformer; It is characterized in that: it includes insulating cylinder (1), fuse (2), power spring circle (3), trigger device (4), sealing plug (5), seal cover (6); Wherein, Fuse (2) correspondence is inserted in the insulating cylinder (1), and power spring circle (3) is enclosed within fuse (2) respectively up and down on the conductive electrode at two ends; Trigger device (4) places in the insulating cylinder (1), and is enclosed within on the conductive electrode of fuse (2) upper end; Seal cover (6) covers the sealing plug (5) that is enclosed within trigger device (4) top through twisting the top that is combined in insulating cylinder (1).
2. all insulation fuse that is used for buried combined transformer according to claim 1 is characterized in that: an end of described insulating cylinder (1) is closed, its other end opening; Its external structure is flanged (FLGD) segmentation cylinder, and the outer surface of cylinder is provided with the outside metal swivel nut (23) of protrusion insulating cylinder (1) that the outer surface of screw thread and middle part cylinder is provided with the full skirt (22) that increases creepage distance and is positioned at full skirt (22) below at insulating cylinder (1) top; Its internal structure is divided into three sections of upper, middle and lower, and its epimere is cylindricality duct (8) short, broad; Its stage casing is long, narrower cylindricality duct (21), and the hole wall place of this duct front end is embedded with the threaded becket of inwall (19), and becket (19) is connected with metal swivel nut (23) in the middle part of the insulating cylinder (1) through conductive metal sheet; Its hypomere is pre-buried section, is embedded with the cup-shaped fixed contact (24) with the same axis of epimere and stage casing in insulating cylinder (1) bottom; Fixed contact (24) upper end communicates with the stage casing, and insulating cylinder (1) outside is exposed in its lower end, and is provided with a screw (25).
3. all insulation fuse that is used for buried combined transformer according to claim 1; It is characterized in that: described trigger device (4) upper end is the hexagon insulated handle (14) of flanged (15); Its lower end is embedded with the threaded cylindricality metallic sheath of outer wall (20), and metallic sheath (20) end is provided with flange.
4. the described all insulation fuse that is used for buried combined transformer according to claim 1 is characterized in that: an end of described sealing plug (5) is closed, its other end opening; Its external structure is the cylinder of flanged (9), and is provided with multiple tracks annular groove (12) at cartridge outer surface, and is embedded with elastic caoutchouc circle (13) in the groove (12); The inside of sealing plug (5) is provided with the cylindricality duct.
5. the described all insulation fuse that is used for buried combined transformer according to claim 1 is characterized in that: an end of described seal cover (6) is closed, its other end opening; Its external structure is the cylinder of top band hexagon flange (7); Its inside is provided with the threaded cylindricality of inwall duct.
6. the described all insulation fuse that is used for buried combined transformer according to claim 1 is characterized in that: described insulating cylinder (1), sealing plug (5) and seal cover (6) are by high-intensity fire-retardant solid insulating material manufacturing.
7. the described all insulation fuse that is used for buried combined transformer according to claim 1, it is characterized in that: described fixed contact (24) is by the conductive metallic material manufacturing, and its surface is coated with silver conductive film.
8. all insulation fuse that is used for buried combined transformer according to claim 1 is characterized in that: described power spring circle (3) is by the beryllium copper manufacturing, and its surface is coated with silver conductive film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101686467A CN102376506B (en) | 2011-06-22 | 2011-06-22 | Full-insulated fuse for buried combined transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101686467A CN102376506B (en) | 2011-06-22 | 2011-06-22 | Full-insulated fuse for buried combined transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102376506A true CN102376506A (en) | 2012-03-14 |
| CN102376506B CN102376506B (en) | 2013-12-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101686467A Active CN102376506B (en) | 2011-06-22 | 2011-06-22 | Full-insulated fuse for buried combined transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102376506B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091737A (en) * | 2014-06-03 | 2014-10-08 | 上海瑞奇电气设备股份有限公司 | High-voltage fuse sealing base for underground transformers |
| CN104409298A (en) * | 2014-11-14 | 2015-03-11 | 桐乡天泽电气有限公司 | Outer sleeve for oil immersed high-voltage current-limiting fuse |
| CN107610989A (en) * | 2017-10-29 | 2018-01-19 | 刘正南 | Fuse mounting insulation tube |
| CN108022815A (en) * | 2018-01-24 | 2018-05-11 | 安徽锐能科技有限公司 | A kind of fuse holder with water-proof function |
| CN115000814A (en) * | 2022-06-17 | 2022-09-02 | 西北核技术研究所 | Insulating shell for high-power gas switch, forming die and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005197182A (en) * | 2004-01-09 | 2005-07-21 | Mitsubishi Electric Corp | Insulating support structure of fuse |
| US20090021339A1 (en) * | 2005-06-07 | 2009-01-22 | Siba Fuses Gmbh & Co. Kg | High-voltage fuse |
| CN201540865U (en) * | 2009-10-23 | 2010-08-04 | 陕西振力电力科技有限公司 | Oil-immersed limiting fuse |
| CN201773808U (en) * | 2010-04-02 | 2011-03-23 | 库柏西安熔断器有限公司 | Oil immersed fuse |
| CN202126982U (en) * | 2011-06-22 | 2012-01-25 | 麦朗辉 | All-insulation fuse used for underground combination transformer |
-
2011
- 2011-06-22 CN CN2011101686467A patent/CN102376506B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005197182A (en) * | 2004-01-09 | 2005-07-21 | Mitsubishi Electric Corp | Insulating support structure of fuse |
| US20090021339A1 (en) * | 2005-06-07 | 2009-01-22 | Siba Fuses Gmbh & Co. Kg | High-voltage fuse |
| CN201540865U (en) * | 2009-10-23 | 2010-08-04 | 陕西振力电力科技有限公司 | Oil-immersed limiting fuse |
| CN201773808U (en) * | 2010-04-02 | 2011-03-23 | 库柏西安熔断器有限公司 | Oil immersed fuse |
| CN202126982U (en) * | 2011-06-22 | 2012-01-25 | 麦朗辉 | All-insulation fuse used for underground combination transformer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091737A (en) * | 2014-06-03 | 2014-10-08 | 上海瑞奇电气设备股份有限公司 | High-voltage fuse sealing base for underground transformers |
| CN104409298A (en) * | 2014-11-14 | 2015-03-11 | 桐乡天泽电气有限公司 | Outer sleeve for oil immersed high-voltage current-limiting fuse |
| CN107610989A (en) * | 2017-10-29 | 2018-01-19 | 刘正南 | Fuse mounting insulation tube |
| CN108022815A (en) * | 2018-01-24 | 2018-05-11 | 安徽锐能科技有限公司 | A kind of fuse holder with water-proof function |
| CN115000814A (en) * | 2022-06-17 | 2022-09-02 | 西北核技术研究所 | Insulating shell for high-power gas switch, forming die and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102376506B (en) | 2013-12-11 |
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Inventor after: Li Yongcheng Inventor after: Li Yunpeng Inventor after: Zhao Bin Inventor after: Zhou Hongsheng Inventor after: Wang Shaocai Inventor after: Ji Heng Inventor before: Mai Langhui |
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Effective date of registration: 20170629 Address after: 114051 LED Pioneer Park, laser Industrial Park, hi tech Zone, Liaoning, Anshan Patentee after: LIAONING HONGCHENG ELECTRIC POWER CO., LTD. Address before: 528223 Guangdong city of Foshan province Jinsha Nanhai District Danzao on an Zhong Fang Cun Xingren Street No. 11 Lane 14 Patentee before: Mai Langhui |
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Denomination of invention: Full-insulated fuse for buried combined transformer Effective date of registration: 20180418 Granted publication date: 20131211 Pledgee: Bank of Anshan Limited by Share Ltd Pledgor: LIAONING HONGCHENG ELECTRIC POWER CO., LTD. Registration number: 2018210000007 |
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Date of cancellation: 20190428 Granted publication date: 20131211 Pledgee: Bank of Anshan Limited by Share Ltd Pledgor: LIAONING HONGCHENG ELECTRIC POWER CO., LTD. Registration number: 2018210000007 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Full-insulated fuse for buried combined transformer Effective date of registration: 20190603 Granted publication date: 20131211 Pledgee: Bank of Anshan Limited by Share Ltd Pledgor: LIAONING HONGCHENG ELECTRIC POWER CO., LTD. Registration number: 2019210000018 |
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Date of cancellation: 20210702 Granted publication date: 20131211 Pledgee: Bank of Anshan Limited by Share Ltd. Pledgor: LIAONING HONGCHENG ELECTRIC POWER Co.,Ltd. Registration number: 2019210000018 |