CN105719891A - Vacuum switch tube capable of improving insulating property - Google Patents

Vacuum switch tube capable of improving insulating property Download PDF

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Publication number
CN105719891A
CN105719891A CN201610163648.XA CN201610163648A CN105719891A CN 105719891 A CN105719891 A CN 105719891A CN 201610163648 A CN201610163648 A CN 201610163648A CN 105719891 A CN105719891 A CN 105719891A
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CN
China
Prior art keywords
power part
annular metal
metal sheet
moving
quiet
Prior art date
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Granted
Application number
CN201610163648.XA
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Chinese (zh)
Other versions
CN105719891B8 (en
CN105719891B (en
Inventor
黄俊龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yueqing Chuanjia Electric Technology Co ltd
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201610163648.XA priority Critical patent/CN105719891B8/en
Priority claimed from CN201310680121.0A external-priority patent/CN104157507B/en
Publication of CN105719891A publication Critical patent/CN105719891A/en
Application granted granted Critical
Publication of CN105719891B publication Critical patent/CN105719891B/en
Publication of CN105719891B8 publication Critical patent/CN105719891B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/66215—Details relating to the soldering or brazing of vacuum switch housings

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

The invention discloses a vacuum switch tube capable of improving the insulating property. The vacuum switch tube comprises a shell, a moving contact and a first fixed contact, wherein the moving contact comprises a moving electric connection part; the first fixed contact comprises a first fixed electric connection part; the moving electric connection part follows the moving contact to carry out reciprocating motion, and finally abuts on the first fixed electric connection part when moving towards the first fixed contact; the shell comprises an annular metal plate, two elastic tube bodies, ceramic tube bodies and cover board assemblies; welded connection parts are arranged at two sides of the annular metal plate; the two elastic tube bodies are located at two sides of the welded connection parts of the annular metal plate; each ceramic tube body is located at one end, far away from the welded connection parts of the annular metal plate, of each elastic tube body; each cover board assembly is used for blocking an opening in one end, far away from the welded connection parts of the annular metal plate, of each ceramic tube body; a round hole is formed in the center of each cover board assembly; the annular metal plate, the elastic tube bodies, the ceramic tube bodies and the cover board assemblies are enclosed to form an accommodating cavity; and the moving electric connection part of the moving contact and the first fixed electric connection part of the first fixed contact are located in the accommodating cavity. The vacuum switch tube effectively prevents the faults that the ceramic tube bodies are loosened or damaged and the like.

Description

Promote the vacuum switch tube of insulating properties
Technical field
The invention belongs to high pressure arc extinguishing technical field, be specifically related to a kind of vacuum switch tube promoting insulating properties.
Background technology
Patent documentation CN102157297A discloses a kind of three position vacuum switch tubes, it is possible to realizes connecting, isolating and ground connection three station function, has the advantages such as compact conformation, reasonable in design, range of application is wider.But there is also weak point: its grounding static contact adopts conductive material to make, two ends connect each via welding manner and an earthenware are fixing, two earthenwares are in split state, bulk strength poor (earthenware of traditional double-position vacuum switching tube is integral piece, so bulk strength is better)；Owing to moving contact is when carrying out high pressure divide-shut brake action, meeting direct collision is to grounding static contact, and owing to impact force is very big, the concordance adding pottery body is poor, is easily caused this place of being welded to connect and loosens in actually used, causes electric power accident.
Summary of the invention
It is an object of the invention to provide a kind of relatively reasonable in structure, be effectively ensured the vacuum switch tube in functional reliability and service life.
The technical scheme realizing the object of the invention is: a kind of vacuum switch tube promoting insulating properties, including housing, has the moving contact of dynamic power part, has the first static contact of the first quiet power part；Dynamic power part is followed moving contact and is moved back and forth, and is finally connected to when moving towards the first static contact on the first quiet power part；It is characterized in that: described housing include both sides be respectively provided with welded connection annular metal sheet, be positioned at annular metal sheet welded connection both sides two elastic bodys, be positioned at each elastic body away from one end of endless metal welded connection ceramic body, for block each pottery body away from the opening of one end of endless metal welded connection cover plate assembly, connect the endless metal auxiliary welded plate of a corresponding metal bellows and a ceramic body adaptive with this metal bellows；Each cover plate assembly center is provided with circular hole；Described annular metal sheet, elastic body, pottery body, cover plate assembly and endless metal auxiliary welded plate enclose formation one containing cavity；The dynamic power part of moving contact and the first quiet power part of the first static contact are arranged in this containing cavity；Described each pottery body is provided with supplementary insulation pipe portion, and each elastic body is set in a corresponding supplementary insulation pipe portion, and each supplementary insulation pipe portion leaves gap close between a side and the annular metal sheet of annular metal sheet；On annular metal sheet, the plate body of adjacent centre bore is arranged in containing cavity and as the second quiet power part；Moving contact also includes the conducting rod being connected with dynamic power part, moves power part between the first quiet power part and the second quiet power part, the centre bore of conducting rod traverse annular metal sheet.
Present configuration is relatively reasonable, and when carrying out divide-shut brake action, elastic body can play cushioning effect, effectively prevents pottery body from the faults such as loosening or fragmentation occurring, it is ensured that functional reliability and service life.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the first structure of the present invention；
Fig. 2 is a kind of structural representation of the second structure of the present invention；
Fig. 3 is a kind of structural representation of the third structure of the present invention；
Fig. 4 is a kind of structural representation of the 4th kind of structure of the present invention.
Detailed description of the invention
(embodiment 1)
Fig. 1 is a kind of structural representation of the first structure of the present invention, it is shown that the first detailed description of the invention of the present invention.
The present embodiment is a kind of vacuum switch tube, as shown in Figure 1, including housing 1, has the moving contact 2 of dynamic power part 21, has the first static contact 3 of the first quiet power part 31；Dynamic power part is followed moving contact and is moved back and forth, and is finally connected to when moving towards the first static contact on the first quiet power part；Described housing includes both sides and is respectively provided with the annular metal sheet 4 of welded connection 41, is positioned at two elastic bodys 5 of annular metal sheet welded connection both sides, is positioned at each elastic body away from the ceramic body 6 of one end of endless metal welded connection, for blocking each pottery body cover plate assembly 7 away from the opening of one end of endless metal welded connection；Each cover plate assembly center is provided with circular hole 71；Described annular metal sheet 4, elastic body 5, pottery body 6 and cover plate assembly 7 enclose formation one containing cavity 11；The dynamic power part of moving contact and the first quiet power part of the first static contact are arranged in this containing cavity.
In the present embodiment, elastic body is metal bellows, and one end of each metal bellows is welded on annular metal sheet in a corresponding welded connection, the other end be welded on on this metal bellows homonymy ceramic body.
In the present embodiment, on annular metal sheet, the plate body of adjacent centre bore 43 is arranged in containing cavity and as the second quiet power part 42；Moving contact also includes the conducting rod 22 being connected with dynamic power part, moves power part between the first quiet power part and the second quiet power part, the centre bore of conducting rod traverse annular metal sheet；The aperture of described centre bore 43 is more than the external diameter of conducting rod and less than the external diameter of dynamic power part；Dynamic power part is finally connected on the second quiet power part when moving towards the second quiet power part.Dynamic power part is when moving towards the first static contact, and one end away from the second quiet power part of dynamic power part is finally connected on the first quiet power part；Dynamic power part is when moving towards the second quiet power part, and one end close to the second quiet power part of dynamic power part is finally connected on the second quiet power part.
The present embodiment is relatively reasonable in structure, and when carrying out divide-shut brake action, elastic body can play cushioning effect, effectively prevents pottery body from the faults such as loosening or fragmentation occurring, it is ensured that functional reliability and service life.
(embodiment 2)
Fig. 2 is a kind of structural representation of the second structure of the present invention, it is shown that the second detailed description of the invention of the present invention.
The present embodiment is a kind of vacuum switch tube, as shown in Figure 2, including housing 1, has the moving contact 2 of dynamic power part 21, has the first static contact 3 of the first quiet power part 31；Dynamic power part is followed moving contact and is moved back and forth, and is finally connected to when moving towards the first static contact on the first quiet power part；Described housing include both sides be respectively provided with welded connection 41 annular metal sheet 4, be positioned at annular metal sheet welded connection both sides two elastic bodys 5, be positioned at each elastic body away from one end of endless metal welded connection ceramic body 6, for block each pottery body away from the opening of one end of endless metal welded connection cover plate assembly 7, connect the endless metal auxiliary welded plate 8 of a corresponding metal bellows and a ceramic body adaptive with this metal bellows；Each cover plate assembly center is provided with circular hole 71；Described annular metal sheet 4, elastic body 5, pottery body 6 cover plate assembly 7 and endless metal auxiliary welded plate 8 enclose formation one containing cavity 11；The dynamic power part of moving contact and the first quiet power part of the first static contact are arranged in this containing cavity.
In the present embodiment, elastic body is metal bellows, one end of each metal bellows is welded on annular metal sheet in a corresponding welded connection, the other end be welded on corresponding endless metal auxiliary welded plate on one end of annular metal sheet, the other end of endless metal auxiliary welded plate is weldingly fixed on a corresponding ceramic body.
In the present embodiment, on annular metal sheet, the plate body of adjacent centre bore 43 is arranged in containing cavity and as the second quiet power part 42；Moving contact also includes the conducting rod 22 being connected with dynamic power part, moves power part between the first quiet power part and the second quiet power part, the centre bore of conducting rod traverse annular metal sheet；The aperture of described centre bore is more than the external diameter of conducting rod and less than the external diameter of dynamic power part；Dynamic power part is finally connected on the second quiet power part when moving towards the second quiet power part.Dynamic power part is when moving towards the first static contact, and one end away from the second quiet power part of dynamic power part is finally connected on the first quiet power part；Dynamic power part is when moving towards the second quiet power part, and one end close to the second quiet power part of dynamic power part is finally connected on the second quiet power part.
Elastic body is subject to self structure restriction, and when being weldingly connected with pottery body, percent defective is higher；The present embodiment by setting up an endless metal auxiliary welded plate between elastic body and pottery body, one end of this endless metal auxiliary welded plate is weldingly connected with elastic body, the other end is weldingly connected with pottery body, thus effectively reducing manufacturing process difficulty, promotes yield rate.
(embodiment 3)
Fig. 3 is a kind of structural representation of the third structure of the present invention, it is shown that the third detailed description of the invention of the present invention.
The present embodiment is a kind of vacuum switch tube, as shown in Figure 3, including housing 1, has the moving contact 2 of dynamic power part 21, has the first static contact 3 of the first quiet power part 31；Dynamic power part is followed moving contact and is moved back and forth, and is finally connected to when moving towards the first static contact on the first quiet power part；Described housing include both sides be respectively provided with welded connection 41 annular metal sheet 4, be positioned at annular metal sheet welded connection both sides two elastic bodys 5, be positioned at each elastic body away from one end of endless metal welded connection ceramic body 6, for block each pottery body away from the opening of one end of endless metal welded connection cover plate assembly 7, connect the endless metal auxiliary welded plate 8 of a corresponding metal bellows and a ceramic body adaptive with this metal bellows；Each cover plate assembly center is provided with circular hole 71；Described annular metal sheet 4, elastic body 5, pottery body 6, cover plate assembly 7 and endless metal auxiliary welded plate 8 enclose formation one containing cavity 11；The dynamic power part of moving contact and the first quiet power part of the first static contact are arranged in this containing cavity；Described each pottery body is provided with supplementary insulation pipe portion 61, and each elastic body is set in a corresponding supplementary insulation pipe portion 61, and each supplementary insulation pipe portion is close to leaving gap 100 between a side and the annular metal sheet of annular metal sheet.
Gap 100 is left between periphery wall and the internal perisporium of a corresponding elastic body in each supplementary insulation pipe portion.
The periphery wall in each supplementary insulation pipe portion is assisted with corresponding endless metal and is left gap 100 between welded plate internal perisporium.
In the present embodiment, on annular metal sheet, the plate body of adjacent centre bore 43 is arranged in containing cavity and as the second quiet power part 42；Moving contact also includes the conducting rod 22 being connected with dynamic power part, moves power part between the first quiet power part and the second quiet power part, the centre bore of conducting rod traverse annular metal sheet；The aperture of described centre bore is more than the external diameter of conducting rod and less than the external diameter of dynamic power part；Dynamic power part is finally connected on the second quiet power part when moving towards the second quiet power part.Dynamic power part is when moving towards the first static contact, and one end away from the second quiet power part of dynamic power part is finally connected on the first quiet power part；Dynamic power part is when moving towards the second quiet power part, and one end close to the second quiet power part of dynamic power part is finally connected on the second quiet power part.
The present embodiment is positioned at the supplementary insulation pipe portion of elastic tubular body by setting up, and improves the uniformity of the Electric Field Distribution of elastic tube body region in containing cavity, also improves the insulating properties between conducting rod and elastic body.
(embodiment 4)
Fig. 4 is a kind of structural representation of the 4th kind of structure of the present invention, it is shown that the 4th kind of detailed description of the invention of the present invention.
The present embodiment is a kind of vacuum switch tube, as shown in Figure 4, including housing 1, has the moving contact 2 of dynamic power part 21, has the first static contact 3 of the first quiet power part 31；Dynamic power part is followed moving contact and is moved back and forth, and is finally connected to when moving towards the first static contact on the first quiet power part；Described housing include both sides be respectively provided with welded connection 41 annular metal sheet 4, be positioned at annular metal sheet welded connection both sides two elastic bodys 5, be positioned at each elastic body away from one end of endless metal welded connection ceramic body 6, for block each pottery body away from the opening of one end of endless metal welded connection cover plate assembly 7, connect the endless metal auxiliary welded plate 8 of a corresponding metal bellows and a ceramic body adaptive with this metal bellows；Each cover plate assembly center is provided with circular hole 71；Described annular metal sheet 4, elastic body 5, pottery body 6, cover plate assembly 7 and endless metal auxiliary welded plate 8 enclose formation one containing cavity 11；The dynamic power part of moving contact and the first quiet power part of the first static contact are arranged in this containing cavity；Described each pottery body is provided with supplementary insulation pipe portion 61, and each elastic body is set in a corresponding supplementary insulation pipe portion 61, and each supplementary insulation pipe portion is close to leaving gap 100 between a side and the annular metal sheet of annular metal sheet；The two side ends of annular metal sheet is respectively provided with one and annular is dielectrically separated from pipe 9, respectively being dielectrically separated from pipe 9 to adjoin one end of annular metal sheet and be fixedly installed on annular metal sheet, the one end away from annular metal sheet being respectively dielectrically separated from pipe extend in a corresponding described gap 100.
Respectively it is dielectrically separated between one end away from annular metal sheet of pipe and the ceramic body of homonymy and leaves gap 100.
In the present embodiment, on annular metal sheet, the plate body of adjacent centre bore 43 is arranged in containing cavity and as the second quiet power part 42；Moving contact also includes the conducting rod 22 being connected with dynamic power part, moves power part between the first quiet power part and the second quiet power part, the centre bore of conducting rod traverse annular metal sheet；The aperture of described centre bore is more than the external diameter of conducting rod and less than the external diameter of dynamic power part；Dynamic power part is finally connected on the second quiet power part when moving towards the second quiet power part.Dynamic power part is when moving towards the first static contact, and one end away from the second quiet power part of dynamic power part is finally connected on the first quiet power part；Dynamic power part is when moving towards the second quiet power part, and one end close to the second quiet power part of dynamic power part is finally connected on the second quiet power part.The internal perisporium of each elastic body can move back and forth on a corresponding periphery wall being dielectrically separated from pipe 9.
The present embodiment is dielectrically separated from pipe by setting up, and improves the uniformity of the Electric Field Distribution of elastic tube body region in containing cavity and the insulating properties between conducting rod and elastic body further.
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the apparent change that these connotations belonging to the present invention are extended out or variation still fall within protection scope of the present invention.

Claims (1)

1. promote a vacuum switch tube for insulating properties, including housing (1), there is the moving contact (2) of dynamic power part (21), there is first static contact (3) of the first quiet power part (31)；Dynamic power part is followed moving contact and is moved back and forth, and is finally connected to when moving towards the first static contact on the first quiet power part；It is characterized in that: described housing includes both sides and is respectively provided with the annular metal sheet (4) of welded connection (41), it is positioned at two elastic bodys (5) of annular metal sheet welded connection both sides, it is positioned at each elastic body ceramic body (6) away from one end of endless metal welded connection, for blocking each pottery body cover plate assembly (7) away from the opening of one end of endless metal welded connection, connect endless metal auxiliary welded plate (8) of a corresponding metal bellows and a ceramic body adaptive with this metal bellows；Each cover plate assembly center is provided with circular hole (71)；Described annular metal sheet (4), elastic body (5), pottery body (6), cover plate assembly (7) and endless metal auxiliary welded plate (8) enclose formation one containing cavity (11)；The dynamic power part of moving contact and the first quiet power part of the first static contact are arranged in this containing cavity；Described each pottery body is provided with supplementary insulation pipe portion (61), and each elastic body is set on a corresponding supplementary insulation pipe portion (61), and each supplementary insulation pipe portion is close to leaving gap (100) between a side and the annular metal sheet of annular metal sheet；On annular metal sheet, the plate body of adjacent centre bore (43) is arranged in containing cavity and as the second quiet power part (42)；Moving contact also includes the conducting rod (22) being connected with dynamic power part, moves power part between the first quiet power part and the second quiet power part, the centre bore of conducting rod traverse annular metal sheet.
CN201610163648.XA 2013-11-27 2013-11-27 Promote the vacuum switch tube of insulation performance Active CN105719891B8 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610163648.XA CN105719891B8 (en) 2013-11-27 2013-11-27 Promote the vacuum switch tube of insulation performance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610163648.XA CN105719891B8 (en) 2013-11-27 2013-11-27 Promote the vacuum switch tube of insulation performance
CN201310680121.0A CN104157507B (en) 2013-11-27 Vacuum switch tube

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201310680121.0A Division CN104157507B (en) 2013-11-27 2013-11-27 Vacuum switch tube

Publications (3)

Publication Number Publication Date
CN105719891A true CN105719891A (en) 2016-06-29
CN105719891B CN105719891B (en) 2019-02-12
CN105719891B8 CN105719891B8 (en) 2019-04-16

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Country Link
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4614850A (en) * 1983-12-05 1986-09-30 Siemens Aktiengesellschaft Vacuum switch for the low-voltage range, especially a low-voltage contactor
CN1183850A (en) * 1995-03-17 1998-06-03 西门子公司 Vacuum interrupter
CN101499384A (en) * 2008-01-31 2009-08-05 施耐德电器工业公司 Vacuum bulb for an electric cut-off device at least providing the function of a disconnecting switch
WO2012136423A1 (en) * 2011-04-02 2012-10-11 Maschinenfabrik Reinhausen Gmbh Tap changer and vacuum interrupter for such a tap changer
CN202888059U (en) * 2012-11-16 2013-04-17 锦州华光玻璃开关管有限公司 Low-voltage large-open circuit ceramic vacuum switch tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4614850A (en) * 1983-12-05 1986-09-30 Siemens Aktiengesellschaft Vacuum switch for the low-voltage range, especially a low-voltage contactor
CN1183850A (en) * 1995-03-17 1998-06-03 西门子公司 Vacuum interrupter
CN101499384A (en) * 2008-01-31 2009-08-05 施耐德电器工业公司 Vacuum bulb for an electric cut-off device at least providing the function of a disconnecting switch
WO2012136423A1 (en) * 2011-04-02 2012-10-11 Maschinenfabrik Reinhausen Gmbh Tap changer and vacuum interrupter for such a tap changer
CN202888059U (en) * 2012-11-16 2013-04-17 锦州华光玻璃开关管有限公司 Low-voltage large-open circuit ceramic vacuum switch tube

Also Published As

Publication number Publication date
CN105719891B8 (en) 2019-04-16
CN105719891B (en) 2019-02-12

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C06 Publication
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Effective date of registration: 20190125

Address after: 325600 Gaizhu Village, Chengnan Street, Yueqing City, Zhejiang Province

Applicant after: Yueqing Chuanjia Electric Technology Co.,Ltd.

Address before: 325600 No. 6 Daxing West Road, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province

Applicant before: Shen Qingzhang

CI03 Correction of invention patent

Correction item: Patentee|Address

Correct: Yueqing Chuanjia Electric Technology Co.,Ltd.|325600 Gaizhu Village, Chengnan Street, Yueqing City, Zhejiang Province

False: Shen Qingzhang|325600 No. 6 Daxing West Road, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province

Number: 07-01

Page: The title page

Volume: 35

Correction item: Patentee|Address

Correct: Yueqing Chuanjia Electric Technology Co.,Ltd.|325600 Gaizhu Village, Chengnan Street, Yueqing City, Zhejiang Province

False: Shen Qingzhang|325600 No. 6 Daxing West Road, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province

Number: 07-01

Volume: 35

CI03 Correction of invention patent
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20160629

Assignee: Hongqi Meter Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000619

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: YIFA HOLDING GROUP Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000618

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: JINSHAN ENVIRONMENTAL-PROTECTION Group

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000617

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: SHENJIANG VALVE Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000637

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: WENZHOU SHENYI SHAFT INDUSTRIES Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000635

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: ZHEJIANG KANGGE ELECTRIC CO.,LTD.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000634

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: CHKO ELECTRICAL GROUP CO.,LTD.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000632

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: ZHEJIANG HUAYI ELECTRONIC Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000631

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: JINMAO ELECTRIC POWER HOLDING CO.,LTD.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000630

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: Huanyu Hi Tech Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000628

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: WENZHOU YINENG ELECTRICAL CO.,LTD.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000626

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: ZHEJIANG GPILOT TECHNOLOGY Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000625

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: ZHEJIANG SHENGYUE ELECTRONIC & TECHNOLOGICAL Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000624

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: Wenzhou MTLC Electric Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000623

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: GULIFA GROUP Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000622

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: NAHO ELECTRIC POWER TECHNOLOGY Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000621

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

Application publication date: 20160629

Assignee: YUEQING HENGTONG ELECTRIC Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000620

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230912

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Application publication date: 20160629

Assignee: ZHEJIANG LONSID HEALTHY DRINKING WATER EQUIPMENT Co.,Ltd.

Assignor: Yueqing Chuanjia Electric Technology Co.,Ltd.

Contract record no.: X2023330000645

Denomination of invention: Vacuum switch tubes for improving insulation performance

Granted publication date: 20190212

License type: Common License

Record date: 20230915

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