CN202178527U - Linear grounding switch - Google Patents
Linear grounding switch Download PDFInfo
- Publication number
- CN202178527U CN202178527U CN2011202403812U CN201120240381U CN202178527U CN 202178527 U CN202178527 U CN 202178527U CN 2011202403812 U CN2011202403812 U CN 2011202403812U CN 201120240381 U CN201120240381 U CN 201120240381U CN 202178527 U CN202178527 U CN 202178527U
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- China
- Prior art keywords
- phase
- ground insulation
- contact
- connecting lever
- moving contact
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Abstract
The utility model discloses a linear grounding switch. Three-phase dynamic contacts are arranged in a crank arm box, and the three-phase dynamic contacts are extended into a shell; middle conductive contacts in conductive contact with the three-phase dynamic contacts are arranged in the shell; three-phase static contacts in on-off fit with the three-phase dynamic contacts are also arranged in the shell; grounding insulators are arranged between the shell and the crank arm box, three grounding insulators are correspondingly sequentially arranged in the arrangement and extension direction of the three-phase dynamic contacts, each grounding insulator corresponds to a one-phase dynamic contact, and the grounding insulators are provided with through holes through which the corresponding dynamic contacts pass; the three-phase middle conductive contacts are correspondingly fixedly arranged on the grounding insulators; and the grounding insulators are provided with grounding conductors conductively connected with the middle conductive contacts and led out and grounded. The internal stress of each grounding insulator is low, so that the service life of the grounding insulator is prolonged, and the safety performance of the grounding switch is improved.
Description
Technical field
The utility model belongs to high voltage electrical apparatus technical field, particularly a kind of linear earthed switch.
Background technology
The gases at high pressure insulated switching installation of three-phase combined type is the straight line ground connection place that linear earthed switch is mainly used in major loop on the GIS product in the electric power system at present.Linear earthed switch will satisfy following function: 1, working earthing suits static, em induced current meter and closes the ability of closing peak current; 2, when measuring resistance and debug circuit breaker characteristic, major loop and body insulation facilitate the introduction of signal.Linear earthed switch mainly comprises housing and connecting lever box among the used high pressure GIS; Between housing and connecting lever box, be provided with disk insulator as linear ground insulation; In disk insulator, be embedded with the three-phase center conductor; Be provided with the driving connecting lever in the connecting lever box, be used for driving the three-phase moving contact action of connecting lever box, in housing, be provided with three middle contacts of three-phase that are used for reliably contacting conducting with three-phase moving contact; Three-phase moving contact in the connecting lever box pass linear ground insulation all the time with three-phase in the middle of conductive contact reliably conduct electricity and contact; In housing, also be provided with and be used for the three-phase fixed contact that is connected with three-phase moving contact conduction, driving when three-phase moving contact under the driving of connecting lever and moving three-phase fixed contact conductive communication or disconnection in three-phase moving contact and the housing; Thereby, when middle conductive contact and three-phase fixed contact conductive communication, be grounded middle conductive contact and three-phase fixed contact conductive communication or disconnection.After three-phase moving contact, the middle conductive contact of three-phase and corresponding fixed contact conduction will contact; Three-phase center conductor in linear ground insulation reliably conducts electricity with the three-phase fixed contact through conductive contact in the middle of the three-phase and contacts, and the three-phase center conductor is drawn in the port of drawing of earthed switch.Because it is bigger to constitute the expansion rate coefficient difference of sub material of linear ground insulation and center conductor material; When the above-mentioned earthed switch that is equipped with this linear ground insulation is applied to low temperature environment following time; Along with temperature Change; Linear ground insulation occurs easily and cause cracking, influence the normal use of linear earthed switch because the internal stress that produced of expanding with heat and contract with cold is inhomogeneous.
The utility model content
The purpose of the utility model is to provide a kind of linear earthed switch, to solve the technical problem of ground insulation of the prior art insulator cracking of appearance because expanding with heat and contract with cold generation internal stress inequality.
For realizing above-mentioned purpose; The utility model adopts following technical scheme: a kind of linear earthed switch; Comprise housing and connecting lever box; In the connecting lever box, be provided with the three-phase moving contact that drives connecting lever and drive by the driving connecting lever; Described three-phase moving contact extends in the housing, in housing, is furnished with to be used for the middle conductive contact that contacts with three-phase moving contact conduction, also is provided with in the described housing to be used for the three-phase fixed contact that cooperates with the three-phase moving contact break-make; Between housing and connecting lever box, also be provided with ground insulation; Described ground insulation is furnished with three successively along the bearing of trend of arranging of described three-phase moving contact is corresponding, described each ground insulation corresponding with a moving contact mutually, on each ground insulation, be provided with the perforation that the corresponding moving contact of confession passes; Conductive contact is corresponding in the middle of the described three-phase is installed on described ground insulation, on each ground insulation, is provided with the earthing conductor that is used to draw ground connection that is connected with corresponding middle conductive contact conduction.
Described each ground insulation is installed with the fixture that is electrically connected with described earthing conductor conductive communication on a side of conductive contact in the middle of the three-phase, every middle conductive contact in the middle of the described three-phase in the conductive contact all is fixed on the corresponding electrical connection fixture.
What described ground insulation was sub is provided with holding tank with the said fixture opposite position place that is electrically connected on the side of three-phase fixed contact, described electrical connection fixture is inlayed and is fixed on described holding tank.
What described three ground insulations were sub is installed with the counter flange that is used for the protective earthing insulator in week laterally.
The earthing conductor of described ground insulation is provided with the ground plate assembling that is used to draw ground connection that contacts with the earthing conductor conduction.
What described each ground insulation was sub all offers closure gasket groove in correspondence week in each perforation on the two sides of housing and connecting lever box laterally, in described closure gasket groove, is provided with sealing ring.
The beneficial effect of the utility model is: between connecting lever box and housing, be provided with three ground insulation in the linear earthed switch that the utility model provided; Each ground insulation is corresponding to a moving contact in the three-phase moving contact; Ground insulation is provided with the perforation that supplies moving contact to pass; Conductive contact is corresponding in the middle of the described three-phase is installed on ground insulation; And the conduction of the earthing conductor on middle conductive contact and corresponding ground insulation is connected; After driving connecting lever and driving the moving contact action and realize three-phase moving contact and three-phase fixed contact conduction in the housing contacts, the three-phase fixed contact is grounded through three-phase moving contact, middle conductive contact, earthing conductor like this, thus the operate as normal of assurance earthed switch.Because be provided with three ground insulation; Can effectively reduce the inner uneven problem of internal stress that causes because of expanding with heat and contract with cold of original single large-scale ground insulation like this; The internal stress of each ground insulation is all less; Effectively prolong the useful life of ground insulation, improved the security performance of earthed switch.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is that K among Fig. 1 is to view;
Fig. 3 is an A-A place cutaway view among Fig. 1.
Embodiment
Like Fig. 1, Fig. 2, shown in Figure 3; GIS uses linear earthed switch; Comprise connecting lever box 4 and housing 3; Between connecting lever box 4 and housing 3, be provided with ground insulation 1, in connecting lever box 4, be provided with and drive connecting lever 8 and by driving the three-phase moving contact assembling that connecting lever 8 drives, the three-phase moving contact assembling comprises and drives the drive mechanism that connecting lever 8 is in transmission connection and the three-phase moving contact 5 of synchronization action; In housing 3, be provided with conductive contact 2 in the middle of the three-phase that is used for the 5 corresponding conductions contacts of the three-phase moving contact of connecting lever box; In housing 3, also be provided with and be used for realizing the three-phase fixed contact (figure does not draw) that break-makes cooperate with three-phase moving contact 5, when three-phase fixed contact and three-phase moving contact conducting, three-phase fixed contact ground connection; 2 of conductive touch are fixedly installed on ground insulation 1 in the middle of the three-phase in the present embodiment; Ground insulation 1 bearing of trend of arranging along three-phase moving contact in the present embodiment is furnished with three successively, and each ground insulation is provided with the perforation 10 that the corresponding moving contact of merit passes corresponding to a moving contact on each ground insulation 1; On each ground insulation, be provided with the earthing conductor 13 that is used to draw ground connection that is connected with corresponding fixed contact conduction; On the side of conductive contact in the middle of the three-phase, be provided with holding tank 11 on each ground insulation 1, in each holding tank 11, all inlay be installed with the earthing conductor conductive communication be electrically connected fixture 12, the middle conductive contact 2 in the middle of the described three-phase in the conductive contact is fixed on the corresponding electrical connection fixture 12; In the present embodiment; Described three-phase moving contact 5 passes and is electrically connected fixture 12, offers the via hole that supplies moving contact to pass on the fixture 12 being electrically connected, pass ground insulation at three-phase moving contact under the effect that drives connecting lever, be electrically connected fixture after with three-phase in the middle of the sliding plug of conductive contact conduction cooperate.Conductive contact is connected with earthing conductor 13 conductions through being electrically connected fixture 12 in the middle of described; In the present embodiment; Three ground insulations 1 week also be installed with the ground connection counter flange 9 that is used for the protective earthing insulator laterally, and the earthing conductor on described ground insulation is provided with the ground plate that being used to of contact with the earthing conductor conduction draw ground connection and assembles 14.
Because three-phase moving contact passes the connecting lever box and gos deep into to housing under driving the connecting lever effect; Therefore all offer the pilot hole that corresponding confession moving contact passes through at the opposite position place of connecting lever box and housing, because in the housing of earthed switch and the connecting lever box SF is housed all
6Gas is to improve the earthed switch performance; Like this for guaranteeing the air-tightness of whole earthed switch; Ground insulation between connecting lever box and the housing is provided with hermetically-sealed construction, and in the present embodiment, what hermetically-sealed construction was meant described each ground insulation all offers closure gasket groove in correspondence week in each perforation on the two sides of housing and connecting lever box laterally; In described closure gasket groove, be provided with sealing ring 6; The week that sealing ring is positioned at the hole that the confession moving contact on housing and the connecting lever box passes laterally, thereby guarantee the air-tightness of earthed switch, improve the security performance of earthed switch.
The earthed switch that the foregoing description provided in use; Drive connecting lever 8 and drive the three-phase moving contact action; Moving contact 5 contacts with corresponding middle contact 2 sliding conductions; When the conduction of the three-phase fixed contact in three-phase moving contact and the housing contact, the three-phase fixed contact through conductive contact in the middle of three-phase moving contact, the three-phase, be electrically connected fixture and earthing conductor realization conductive communication, and finally draw ground connection from the ground connection exit of ground plate fit on.
Three ground insulation in the foregoing description are drawn ground connection to be grounded the operate as normal of switch under assurance housing and the uncharged situation of connecting lever box; Because the internal stress of three ground insulation is less; Effectively avoided the cracking of ground insulation, the fail safe and the useful life of having improved earthed switch.
Claims (6)
1. linear earthed switch; Comprise housing and connecting lever box; In the connecting lever box, be provided with the three-phase moving contact that drives connecting lever and drive by the driving connecting lever; Described three-phase moving contact extends in the housing, in housing, is furnished with to be used for the middle conductive contact that contacts with three-phase moving contact conduction, also is provided with in the described housing to be used for the three-phase fixed contact that cooperates with the three-phase moving contact break-make; Between housing and connecting lever box, also be provided with ground insulation; It is characterized in that: described ground insulation is furnished with three successively along the bearing of trend of arranging of described three-phase moving contact is corresponding, described each ground insulation corresponding with a moving contact mutually, on each ground insulation, be provided with the perforation that the corresponding moving contact of confession passes; Conductive contact is corresponding in the middle of the described three-phase is installed on described ground insulation, on each ground insulation, is provided with the earthing conductor that is used to draw ground connection that is connected with corresponding middle conductive contact conduction.
2. linear earthed switch according to claim 1; It is characterized in that: described each ground insulation is installed with the fixture that is electrically connected with described earthing conductor conductive communication on a side of conductive contact in the middle of the three-phase, and every middle conductive contact in the middle of the described three-phase in the conductive contact all is fixed on the corresponding electrical connection fixture.
3. linear earthed switch according to claim 2; It is characterized in that: what described ground insulation was sub is provided with holding tank with the said fixture opposite position place that is electrically connected on the side of three-phase fixed contact, described electrical connection fixture is inlayed and is fixed on described holding tank.
4. according to claim 1 or 2 or 3 described linear earthed switches, it is characterized in that: what described three ground insulations were sub is installed with the counter flange that is used for the protective earthing insulator in week laterally.
5. according to claim 1 or 2 or 3 described linear earthed switches, it is characterized in that: the earthing conductor of described ground insulation is provided with the ground plate assembling that is used to draw ground connection that contacts with the earthing conductor conduction.
6. according to claim 1 or 2 or 3 described linear earthed switches; It is characterized in that: what described each ground insulation was sub all offers closure gasket groove in correspondence week in each perforation on the two sides of housing and connecting lever box laterally, in described closure gasket groove, is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202403812U CN202178527U (en) | 2011-07-08 | 2011-07-08 | Linear grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202403812U CN202178527U (en) | 2011-07-08 | 2011-07-08 | Linear grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202178527U true CN202178527U (en) | 2012-03-28 |
Family
ID=45868391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202403812U Expired - Fee Related CN202178527U (en) | 2011-07-08 | 2011-07-08 | Linear grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202178527U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701062A (en) * | 2015-04-06 | 2015-06-10 | 铁岭市世纪电力设备有限公司 | Outdoor AC high-voltage isolator |
| CN106211730A (en) * | 2016-08-25 | 2016-12-07 | 项立榕 | Grounded metal skeleton reinforced plastics composite web |
-
2011
- 2011-07-08 CN CN2011202403812U patent/CN202178527U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701062A (en) * | 2015-04-06 | 2015-06-10 | 铁岭市世纪电力设备有限公司 | Outdoor AC high-voltage isolator |
| CN106211730A (en) * | 2016-08-25 | 2016-12-07 | 项立榕 | Grounded metal skeleton reinforced plastics composite web |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20190708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |