CN1282287C - Surge arrester having disconnector by end cap - Google Patents
Surge arrester having disconnector by end cap Download PDFInfo
- Publication number
- CN1282287C CN1282287C CN 98807809 CN98807809A CN1282287C CN 1282287 C CN1282287 C CN 1282287C CN 98807809 CN98807809 CN 98807809 CN 98807809 A CN98807809 A CN 98807809A CN 1282287 C CN1282287 C CN 1282287C
- Authority
- CN
- China
- Prior art keywords
- end cap
- surge
- electric
- blocking element
- surge arrester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
Abstract
An apparatus includes a surge arresting element, first and second end caps, an arrester housing, and a fault disconnector. The surge arresting element is arranged to conduct in the presence of the surge on a power line. The first and second end caps are arranged to be electrically connected to the surge arresting element, and the second end cap forms a disconnector housing. The arrester housing is arranged to house the surge arresting element and the first and second end caps so that the disconnector housing is accessible from an exterior of the arrester housing. The fault disconnector is arranged to electrically disconnect the surge arresting element from the power line in the event of a fault, and the fault disconnector is housed within the disconnector housing formed by the second end cap. A fastener is arranged to fasten the surge arresting element, the first and second end caps, the arrester housing, and the fault disconnector to a mounting bracket so as to wedge the arrester housing between the mounting bracket and the second end cap in order to form a seal.
Description
Relevant application
The application is in the part continuation application that on August 6th, 1997 submitted to, application number is 08/907,327 U.S. Patent application.
Technical field
The present invention relates to a kind of surge arrester that is used for surge is diverted to ground.Say that more specifically this surge arrester of the present invention can have a circuit breaker, this circuit breaker can make surge arrester and ground open circuit under the situation that this surge arrester breaks down.
Background technology
The overvoltage surge is advanced and is shifted inadequately or turn to along an electric power distribution system, and it often damages other electric equipment of transformer and electric power distribution system, also injures the electric equipment by the user of the residential area of this electric power distribution system power supply, commercial and industrial.Therefore, all surge arresters of normal use were diverted to the system earth end with the overvoltage surge can hurt the electric equipment that is connected or is connected in electric power distribution system in the overvoltage surge before in an electric power distribution system.
The common surge arrester that is used in the electric power distribution system can break down under a runaway condition.After such fault took place, this surge arrester can be blown, near equipment may damaging and in its vicinity anyone by chance.So, the surge arrester that has stoppage circuit breaker is provided in prior art usually, this circuit breaker can be opened the circuit of the surge arrester that contains fault.Usually, a stoppage circuit breaker is connected between its corresponding surge arrester and the ground, so that breaks down and when having started stoppage circuit breaker, this stoppage circuit breaker just can separate surge arrester with Ground Service Plug when this surge arrester.The ground connection connection of this separation not only separates the surge arrester of fault with electric power distribution system, but also demonstrate this surge arrester to the public utilities trackman fault has taken place.
A kind of typical stoppage circuit breaker comprises a box, can contain the gunpowder of a scheduled volume in this box, and it just is heated when surge arrester begins to break down.When this box fully heated, just blast was thrown off so that surge arrester is connected mutually with ground.The powder volume that uses in this box is enough to cause this disengagement, but is not enough to cause and damages or people and animals are damaged.
Be contained in the breaker base in other element quilt of this box and stoppage circuit breaker, this breaker base is an independent part of surge arrester, it has an internal thread hole, is used for being connected with an outer casing screw of surge arrester, and also has an external screw thread ground joint that links to each other with earth lead.As another element of stoppage circuit breaker, be connected electrically between the ground joint of surge arrester terminals and this circuit breaker by a resistor of adorning in the breaker base.Therefore, when surge arrester broke down, the current anomaly ground that flows through resistance increased, and produces enough heats to excite this box, makes its destruction breaker base and earth terminal is separated with surge arrester.
Use an independent breaker base both to increase the number of spare parts of a surge arrester, increased the manufacturing cost of this surge arrester again.Target of the present invention is the surge arrester that sensing one can reduce number of spare parts.
Summary of the invention
According to one aspect of the present invention, provide a kind of surge arrester to comprise:
One electric surge blocking element, wherein, this electric surge blocking element is set to when surge occurring and just can conducts electricity;
One first end cap, this first end cap are set to electric surge blocking element are electrically connected on one first electric wire;
One second end cap, this second end cap is electrically connected on electric surge blocking element, wherein, this second end cap has first and second ends, first end directly is electrically connected on electric surge blocking element, second end of second end cap be indent to form a breaker base, second end cap all conducts electricity; And
One stoppage circuit breaker, this stoppage circuit breaker is set to second end cap is electrically connected on one second electric wire, wherein, this stoppage circuit breaker is set to when breaking down the electric surge blocking element and second electric wire is disconnected, and this stoppage circuit breaker is placed in the breaker base that is formed by second end cap.
Description of drawings
These and other characteristics and advantage of the present invention after in conjunction with all accompanying drawings the present invention being carried out specifically and at large considering, can become more clear and understand.All accompanying drawings wherein are:
Fig. 1 has represented first embodiment according to a surge arrester of the present invention, as to comprise a stoppage circuit breaker;
Fig. 2 is an exploded view of stoppage circuit breaker shown in Figure 1;
Fig. 3 is the enlarged drawing according to second embodiment of surge arrester of the present invention;
Fig. 4 has represented the 3rd embodiment according to surge arrester of the present invention; And
Fig. 5 has represented the 4th embodiment according to surge arrester of the present invention.
Embodiment
As shown in Figure 1, a surge arrester 10 comprises one first terminals 12 and one second terminals 14.First terminals 12 comprise that one is used for this surge arrester 10 is electrically connected on first joint 16 of one first electric wire.These second terminals 14 comprise that one is used for this surge arrester 10 is connected in second joint 18 of one second electric wire.First electric wire is a conductor wire for example, and it is connected in a high-voltage line of an electric power distribution system with first joint 16, and second electric wire is a conductor wire with second joint, 18 ground connection.Yet perhaps, first electric wire is a conductor wire with first joint, 16 ground connection for example, and second electric wire one is connected in the conductor wire of the high-voltage line of an electric power distribution system with second joint 18.
First and second end caps 20 and 22 and electric surge blocking element 24,26,28 and 30 have been adorned in the one discharger shell 32.Be familiar with as people, but this discharger shell 32 1 have Fen Shui a plurality of polymerizations or porcelain skirt section (porcelain water shed) 34 insulation polymerization or ceramic shell.For this surge arrester 10 is installed and is supported on the miscellaneous equipment of a utility pole or an electric power distribution system, ad hoc have an installation bracket 36.
As Fig. 1 and 2, first end 40 that second end cap 22 has the one and the 4th electric surge blocking element 30 to electrically contact.Second end cap 22 also has one second end 42 that comprises a wall 44 that forms a recess 46.One stoppage circuit breaker 47 comprises that one is comprised in the cartridge (cartridge) 48 in the end 50 of second joint 18.This stoppage circuit breaker 47 comprises that also second conductive gasket 54 and that first conductive gasket 52, that is close proximity to the end 50 of second joint 18 is close proximity to an inwall 58 of second end cap 22 is interposed in the resistor 56 between first and second conductive gasket 52 and 54.When as illustrated in fig. 1 with 47 assemblings of this stoppage circuit breaker, a plastic cap 59 comprises this first and second conductive gasket 52 and 54 and resistor 56.So, this plastic cap 59 insulate the wall 44 of resistor 56 and first and second conductive gasket 52 and 54 and second end cap 22, impels fault current from second end cap 22 flow through second conductive gasket 54, resistor 56, first conductive gasket 52 and second joint 18.
One circumferential groove 60 is arranged on the wall 44 of second end cap 22.At the assembly process of this surge arrester 10, all electric surge blocking elements 24,26,28 and 30 are stacked between first and second end caps 20 and 22.At heap post outer wrapping one glass fabric that forms by electric surge blocking element 24,26,28 and 30 and first and second end caps 20 and 22, so that all electric surge blocking elements 24,26,28 and 30 and first and second end caps 20 and 22 are remained in this heap post.Discharger shell 32 (as shown in Figure 1) is loaded onto in the heap post outside that is wrapped in this electric surge blocking element 24,26,28 and 30 and first and second end caps 20 and 22.For example, this discharger shell 32 directly can be molded in outside the heap post that the quilt of electric surge blocking element 24,26,28 and 30 and first and second end caps 20 and 22 wraps.
As shown in Figure 1, by wall 44 being inserted in the hole 62 on the installation bracket 36, this discharger shell 32 can be installed on the installation bracket 36.This installation bracket 36 can have one first recess 64 and one second recess 66 that is provided with concentrically with respect to one another.First recess 64 is that columniform wall 68 forms by one of installation bracket 36 haply.The wall 68 of this substantial cylindrical can have an internal taper.When second end cap 22 is pushed into and pass through the hole 62 of 36 li of installation brackets, one flange 70 of second end cap 22 enters second recess 66 of installation bracket 36, and the tapering of the wall 68 of conical shaped is clamp-oned between the flange 70 of the wall 68 of this substantial cylindrical and second end cap 22 end 72 of discharger shell 32.Because this squeezing action, packing ring or the sealing ring at second terminals, 14 places played in end 72, so that the inwall and the external environment condition of discharger shell 32 are kept apart.When this discharger shell 32 is pressed in the perforate 62 of installation bracket 36 fully, so that in the time of can touching circumferential groove 60, one snap ring 73 is snapped in the circumferential groove 60 on the wall 44 of second end cap 22, thereby with enough power surge arrester 10 is clamped on the installation bracket 36, and maintains sealing between the flange 70 of the substantial cylindrical wall 68 and second end cap 22 by end 72.
By making cartridge 48 insert ends 50, second joint 18 be inserted pass plastic cap 59 and be close proximity to a flange 76 in the end 50 of second joint 18 until this plastic cap 59, and, be close proximity to flange 76 by first conductive gasket 52 being inserted plastic caps 59 until this packing ring 52, just formed a sub-unit 74 in the end 50 of second joint 18.Resistor 56 insertion plastic caps 59 are close proximity to first conductive gasket, 52, the second conductive gaskets 54 until it and are placed on the top of this resistor 56.Then, sub-unit 74 is inserted in the recess 46 of second end cap 22, be close proximity to inwall 58, stay a space 78 (as shown in Figure 1) until second conductive gasket 54.Fill a kind of epoxy packages material in this space 78, so that keep electrically contacting of the sub-unit 76 and second end cap 22.
Therefore, the recess 46 in second end cap 22 forms the breaker base of a stoppage circuit breaker 47, makes the independent shell that does not need to be used in addition stoppage circuit breaker.
60 li of circumferential grooves that are substituted in second end cap 22 use snap ring 73 with first and second end caps 20 and 22, electric surge blocking element 24,26,28 and 30 and discharger shell 32 be clamped in the measure of installation bracket 36, second end cap 22 can be threadedly connected on the installation bracket 36.For this reason, can in a zone 80 of the outside of as shown in Figure 3 second end cap 22, process external screw thread.
As shown in Figure 1, discharger shell 32 is formed on first end cap 20, cooperates a flange of first joint 16 again, thereby a sealing is provided.Sealing at first terminals 12 is kept apart the inside and the external environment condition of discharger shell 32.Another kind of situation is, the configuration of discharger shell 32 can design as shown in Figure 4 a globality O shape circle 92.This globality O shape circle 92 is fitted in the cannelure 94 that is centered around on the one first end cap 20A, so that provide a sealing at first terminals 12, sealing is kept apart the inside and the external environment condition of discharger shell 32.
Replacement can be by the globality O shape circle 100 that provide shown in Figure 5 according to the method for globality O shape circle 92 shapings one globality O shape circle shown in Figure 4.This O shape circle 100 is integrally formed in the top of discharger shell 32, and forms a hole 102, the first joints 16 and extend through this hole, and it can be threadedly connected in first end cap 20.This globality O shape circle 100 is fitted in the annular groove 104 that forms on the flange 106 of first joint 16.After first joint 16 is screwed into first end cap 20, this integral body shape O shape circle 100 is just tightly clamp-oned in this annular groove 104, with flange 106 collaborative works, so that provide a sealing outside first terminals 12, sealing separates the inside and the external environment of discharger shell 32.
Discussed above some variation design of the present invention.The technical staff of practice in field of the present invention also can have other variation design.For example, first joint 16 and first end cap 20 separate as shown in the figure.As not being, first joint 16 and first end cap 20 can be formed the conducting element of a single integral body.
Also have, four electric surge blocking elements 24,26,28 and 30 shown in Fig. 1 are to be connected electrically between first and second end cap 20 and 22.Yet, the electric surge blocking element of any amount can be set between first and second end caps 20 and 22, this depends on the voltage that electric power distribution system carries and/or the concrete structure of all electric surge blocking elements.
In addition, as mentioned above, this surge arrester 10 is assembled according to following program.At first, electric surge blocking element 24,26,28 and 30 is stacked between first and second end cap 20 and 22, with the glass fibre fabric all electric surge blocking elements 24,26,28 and 30 and first and second end caps 20 and the 22 heap posts that form are wound up again, again discharger shell 32 is installed on the heap post of all electric surge blocking elements 24,26,28 of being held and 30 and first and second end caps 22 and 22.In second step, then this structure is fixed on the installation bracket 36.In the 3rd step, sub-unit 74 is installed on second end cap 22.As not being, this surge arrester 10 can assemble by the program of any hope.For example, can earlier all electric surge blocking elements 24,26,28 and 30 be stacked between first and second end cap 20 and 22, to hold by the heap post that all electric surge blocking elements 24,26,28 and 30 and first and second end caps form with glass fabric again, again discharger shell 32 is installed on all electric surge blocking elements of being banked up 24,26,28 and 30 and first and second end caps 20 and 30.In second step, sub-unit 74 can be installed on second end cap 22.In the 3rd step, this structure that will form then is fixed in installation bracket 36.
In addition, it is electric surge blocking element that first and second end caps 20 and 22 can be taken as, as long as they help above-mentioned surge discharge function.
In addition, plastic cap 59 can be made by the electrical insulating material of the non-plastics of any kind.
Also have, between second conductive gasket 54 and inwall 58, can insert a power spring, as spring washer.
So, above-mentioned explanation of the present invention only is counted as illustrates, its purpose is to teach to the technical staff in those these fields implements best way of the present invention.Concrete structure can be done obviously to change and not leave the spirit of this invention, and is retained in whole rights to use of all variation designs in the scope of appended all claims.
Claims (12)
1. a surge arrester comprises:
One electric surge blocking element, wherein, this electric surge blocking element is set to when surge occurring and just can conducts electricity;
One first end cap, this first end cap are set to electric surge blocking element are electrically connected on one first electric wire;
One second end cap, this second end cap is electrically connected on electric surge blocking element, wherein, this second end cap has first and second ends, first end directly is electrically connected on electric surge blocking element, second end of second end cap be indent to form a breaker base, second end cap all conducts electricity; And
One stoppage circuit breaker, this stoppage circuit breaker is set to second end cap is electrically connected on one second electric wire, wherein, this stoppage circuit breaker is set to when breaking down the electric surge blocking element and second electric wire is disconnected, and this stoppage circuit breaker is placed in the breaker base that is formed by second end cap.
2. according to the surge arrester of claim 1, it is characterized in that first electric wire is a supply lines, second electric wire is a ground connection.
3. according to the surge arrester of claim 1, it is characterized in that first and second end caps are in electrical contact with electric surge blocking element.
4. according to the surge arrester of claim 1, it is characterized in that electric surge blocking element is a metal oxide variable resistor.
5. according to the surge arrester of claim 1, it is characterized in that, also comprise an installation bracket, it is set to can support electric surge blocking element, first and second end caps and stoppage circuit breaker.
6. according to the surge arrester of claim 5, it is characterized in that, also comprise a securing member, it is set to and electric surge blocking element, first and second end caps and stoppage circuit breaker can be anchored on installation bracket, and this installation bracket is clamped between second end cap and this securing member.
7. according to the surge arrester of claim 6, it is characterized in that the discharger shell is set to when installation bracket is clamped between second end cap and the securing member and is wedged between the installation bracket and second end cap, make to form a sealing.
8. according to the surge arrester of claim 6, it is characterized in that, installation bracket has first and second recesses, first recess is formed by a wall of this installation bracket, this wall is tapered, second recess is set to a flange that can place second end cap, and the discharger shell is set between the flange of the tapered wall that is wedged in this installation bracket when installation bracket is clamped between second end cap and this securing member and second end cap, so that form a sealing
9. according to the surge arrester of claim 1, it is characterized in that electric surge blocking element comprises a plurality of electric surge blocking elements.
10. according to the surge arrester of claim 1, it is characterized in that, also comprise the discharger shell of being arranged to hold the electric surge blocking element and first and second end caps.
11. the surge arrester according to claim 1 is characterized in that, the discharger shell has a projection that is O shape cast formula, and this projection is arranged to a sealing with respect to first end cap.
12. the surge arrester according to claim 1 is characterized in that, first end cap has first and second ends, and second end is electrically connected on electric surge blocking element, and the discharger shell forms a sealing on first end of first end cap.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US90732797A | 1997-08-06 | 1997-08-06 | |
| US08/907,327 | 1997-08-06 | ||
| US08/954,987 US5923518A (en) | 1997-08-06 | 1997-10-21 | Surge arrester having disconnector housed by end cap |
| US08/954,987 | 1997-10-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1265780A CN1265780A (en) | 2000-09-06 |
| CN1282287C true CN1282287C (en) | 2006-10-25 |
Family
ID=27129488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98807809 Expired - Fee Related CN1282287C (en) | 1997-08-06 | 1998-06-01 | Surge arrester having disconnector by end cap |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1002350B1 (en) |
| JP (1) | JP2001512895A (en) |
| CN (1) | CN1282287C (en) |
| BR (1) | BR9811131A (en) |
| CA (1) | CA2296421A1 (en) |
| DE (1) | DE69809926D1 (en) |
| ID (1) | ID23967A (en) |
| TW (1) | TW466813B (en) |
| WO (1) | WO1999008353A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001023807A (en) * | 1999-07-09 | 2001-01-26 | Toshiba Corp | Lightning arrester and manufacture thereof |
| US6519129B1 (en) | 1999-11-02 | 2003-02-11 | Cooper Industries, Inc. | Surge arrester module with bonded component stack |
| US7736330B2 (en) | 2000-08-24 | 2010-06-15 | Bardy Gust H | Subcutaneous implantation instrument with dissecting tool and method of construction |
| US8323232B2 (en) | 2000-08-24 | 2012-12-04 | Cardiac Science Corporation | Instrument with a two-part plunger for subcutaneous implantation |
| DE50101662D1 (en) * | 2001-08-10 | 2004-04-15 | Abb Schweiz Ag | Arc-protected electrical component |
| US7436283B2 (en) | 2003-11-20 | 2008-10-14 | Cooper Technologies Company | Mechanical reinforcement structure for fuses |
| US8117739B2 (en) | 2004-01-23 | 2012-02-21 | Cooper Technologies Company | Manufacturing process for surge arrester module using pre-impregnated composite |
| US7075406B2 (en) | 2004-03-16 | 2006-07-11 | Cooper Technologies Company | Station class surge arrester |
| US7633737B2 (en) | 2004-04-29 | 2009-12-15 | Cooper Technologies Company | Liquid immersed surge arrester |
| CN114613563A (en) * | 2020-12-08 | 2022-06-10 | 西安西电避雷器有限责任公司 | Lightning arrester and processing method thereof |
| US11894166B2 (en) | 2022-01-05 | 2024-02-06 | Richards Mfg. Co., A New Jersey Limited Partnership | Manufacturing process for surge arrestor module using compaction bladder system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4404614A (en) * | 1981-05-15 | 1983-09-13 | Electric Power Research Institute, Inc. | Surge arrester having a non-fragmenting outer housing |
| US4663692A (en) * | 1985-06-27 | 1987-05-05 | Westinghouse Electric Corp. | Electrical surge arrester and disconnector |
| US4734823A (en) * | 1985-11-01 | 1988-03-29 | Joslyn Corporation | Fault current interrupter and explosive disconnector for surge arrester |
| EP0655814A1 (en) * | 1993-11-29 | 1995-05-31 | Joslyn Manufacturing Company | Surge arrester with insulative support bracket |
-
1998
- 1998-06-01 EP EP98923871A patent/EP1002350B1/en not_active Expired - Lifetime
- 1998-06-01 WO PCT/US1998/011099 patent/WO1999008353A1/en not_active Application Discontinuation
- 1998-06-01 ID IDW20000203A patent/ID23967A/en unknown
- 1998-06-01 CA CA002296421A patent/CA2296421A1/en not_active Abandoned
- 1998-06-01 JP JP2000506702A patent/JP2001512895A/en active Pending
- 1998-06-01 BR BR9811131-0A patent/BR9811131A/en not_active Application Discontinuation
- 1998-06-01 DE DE69809926T patent/DE69809926D1/en not_active Expired - Lifetime
- 1998-06-01 CN CN 98807809 patent/CN1282287C/en not_active Expired - Fee Related
- 1998-06-04 TW TW87108870A patent/TW466813B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ID23967A (en) | 2000-06-14 |
| DE69809926D1 (en) | 2003-01-16 |
| EP1002350A1 (en) | 2000-05-24 |
| JP2001512895A (en) | 2001-08-28 |
| EP1002350B1 (en) | 2002-12-04 |
| CA2296421A1 (en) | 1999-02-18 |
| WO1999008353A1 (en) | 1999-02-18 |
| BR9811131A (en) | 2000-07-18 |
| TW466813B (en) | 2001-12-01 |
| CN1265780A (en) | 2000-09-06 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |