CN105609336A - High-voltage switch and high-voltage switch remote control system - Google Patents
High-voltage switch and high-voltage switch remote control system Download PDFInfo
- Publication number
- CN105609336A CN105609336A CN201610147374.5A CN201610147374A CN105609336A CN 105609336 A CN105609336 A CN 105609336A CN 201610147374 A CN201610147374 A CN 201610147374A CN 105609336 A CN105609336 A CN 105609336A
- Authority
- CN
- China
- Prior art keywords
- voltage switch
- contact
- switch gear
- motor
- static contact
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Handcart (AREA)
Abstract
The invention discloses a high-voltage switch. The high-voltage switch comprises a base, a static contact and a movable contact and also comprises a motor, wherein the static contact is fixedly connected with the base, the movable contact can move relative to the base, and the motor is used for driving the movable contact to move so as to be in contact with or separated from the static contact. The motor is arranged inside the high-voltage switch and can be used for driving the movable contact to be in contact with or separated from the static contact, the motor starting can be remotely and wirelessly controlled or controlled by a remote overhead line, the moving of the movable contact is further controlled by remotely controlling the start and stop of the motor, and the movable contact is controlled to be in contact with or separated from the static contact. Therefore, the remote control on switch-on and switch-off of the high-voltage switch can be achieved, a worker is not needed to start the high-voltage switch in a site, and site operation of the worker is avoided; and by the high-voltage switch, the problem of inconvenience in switching of the high-voltage switch is effectively solved. The invention also discloses a high-voltage switch remote control system comprising the above high-voltage switch.
Description
Technical field
The present invention relates to electric machinery technical field, more particularly, relate to a kind of high-voltage switch gear, also relate toAnd a kind of high-voltage switch gear tele-control system that comprises above-mentioned high-voltage switch gear.
Background technology
In mine power supply system, the mining explosion-proof high-voltage switch usually using is used for three-phase alternating current neutralityPoint ungrounded supply system carries out control and protection, to realize safe transport and the application of electric power.
Fig. 1 is the structural representation of a kind of common mining explosion-proof type high-voltage switch gear in prior art, from Fig. 1In can find out, this high-voltage switch gear comprises door 101, housing 102, isolation trolley 103, mains side moving contact104, mains side static contact 105, load side moving contact 107, load side static contact 106, trolley track 108With manual draw bar 109. The core component of this high-voltage switch gear is all arranged on housing 102, and then by housing 102Be combined into an airtight cavity with door 101, to be isolated from the outside, and then can play isolated inner generationThe high temperature such as spark, electric arc material, avoided high temperature material to cause outside burning or blast, very suitableClose in mine and use. And core component is wherein switch, wherein moving contact connects with corresponding static contactTouch and be closure, and two contacts separation are disconnection. In this switch, wherein load side moving contact 107Be fixed on isolation trolley 103 with mains side moving contact 104, and wherein load side static contact 106 and mains sideStatic contact 105 is fixed on housing 102, and then controls isolation trolley 103 along dolly by manual draw bar 109Track 108 moves, and to reach the effect that contacts and disengage that makes moving contact and static contact, then canRealize the switching between disconnection and the closure of switch.
As above high-voltage switch gear, the closed and disconnected of switch is all manually to draw by staff's manual operationBar switches, and carries out Context switches so need staff to be deep in mine. This not only can increaseThe input of the production capital, also can be more severe because of environment in mine, the life that endangers greatly staffLife is healthy.
In sum, how effectively solving the problem of the switching over inconvenience of high-voltage switch gear, is currentThose skilled in the art's urgent problem.
Summary of the invention
In view of this, first object of the present invention is to provide a kind of high-voltage switch gear, and this high-voltage switch gear canEffectively to solve the problem of switching over inconvenience of high-voltage switch gear; Second object of the present invention isA kind of high-voltage switch gear tele-control system that comprises above-mentioned high-voltage switch gear is provided.
In order to reach above-mentioned first object, the invention provides following technical scheme:
A kind of high-voltage switch gear, the static contact that comprise pedestal, is fixedly connected with described pedestal and can relative instituteState the moving contact that pedestal moves, also comprise for driving described moving contact to move to realize with described static contactContact and the motor separating.
Preferably, also comprise isolation trolley and with the relatively-stationary trolley track of described pedestal, described movable contactHead is fixed on described isolation trolley, and described motor drives described in described isolation trolley edge by transmission mechanismTrolley track moves.
Preferably, described transmission mechanism is slider-crank mechanism or rack and pinion drive mechanism.
Preferably, also comprise for contacting with described static contact at described moving contact after putting in place and control described electricityWhat machine was shut down be incorporated into a limit switch and for after separating with described static contact at described moving contact and putting in placeControl the limit switch that puts in place that divides of described motor stopping.
Preferably, in described moving contact and described static contact one be provided with contact another be provided with and instituteState the Chu road that matches, contact, described tactile road is along the moving direction setting of described isolation trolley.
Preferably, also comprising also can be real-time for taking described moving contact and described static contact contact conditionTransmission photographing information is to the camera of remote display.
Preferably, described camera is night-vision camera.
A kind of high-voltage switch gear provided by the invention, this high-voltage switch gear comprise base, static contact, moving contact andMotor. Wherein static contact and moving contact contact, and wherein static contact is relative with machine base fixing, and movable contactHead should move relative to pedestal. Motor is for driving moving contact to move, by driving moving contactMobile is mainly the rotation by motor shaft to contact or to separate with static contact, carrys out direct or indirect drivingThe movement of moving moving contact.
According to above-mentioned technical scheme, can know, be provided with motor in the inside of high-voltage switch gear, and electricityMachine can drive contacting and disengaging of moving contact and static contact, and the startup of motor can be by long-range nothingLine traffic control or long-range stringing control, and then moving contact is controlled in the start and stop that can realize Long-distance Control motorMovement, and then control contacting and disengaging of moving contact and static contact. So opening of this high-voltage switch gearClose closure and can realize Long-distance Control, and no longer need staff scene to start, avoided work peopleMember's execute-in-place. So this high-voltage switch gear has solved the asking of switching over inconvenience of high-voltage switch gear effectivelyTopic.
In order to reach above-mentioned second object, the present invention also provides a kind of high-voltage switch gear tele-control system,This high-voltage switch gear tele-control system comprises above-mentioned any high-voltage switch gear, this high-voltage switch gear Long-distance Control systemThe remote controllers of system can Long-distance Control high-voltage switch gear the start and stop of motor. Due to above-mentioned high-voltage switch gearHave above-mentioned technique effect, the high-voltage switch gear tele-control system with this high-voltage switch gear also should have correspondingTechnique effect.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will be to realityThe accompanying drawing of executing required use in example or description of the Prior Art is briefly described, apparently, belowAccompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,Do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of common high-voltage switch gear in prior art;
The structural representation of the high-voltage switch gear that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
The embodiment of the invention discloses a kind of high-voltage switch gear, effectively to solve the switching over of high-voltage switch gearInconvenient problem.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried outDescribe clearly and completely, obviously, described embodiment is only the present invention's part embodiment, andNot whole embodiment. Based on the embodiment in the present invention, those of ordinary skill in the art are not doingGo out the every other embodiment obtaining under creative work prerequisite, all belong to the scope of protection of the invention.
Refer to Fig. 2, the structural representation of the high-voltage switch gear that Fig. 2 provides for the embodiment of the present invention.
At a kind of specific embodiment, the present embodiment provides a kind of high-voltage switch gear, and this high-voltage switch gear is mainlyAs mining, and have by housing and door form sealing a cavity contact to cut off with the external world. This high pressureSwitch comprises pedestal, static contact 2, moving contact 3 and motor 4. Wherein static contact 2 and moving contact 3 contact,To connect, show switch closure, and in the time that two contacts separate, show that switch is in off-state, itsMiddle static contact 2 is relative with pedestal 1 fixing, and moving contact 3 should move relative to pedestal 1, so that movable contact3 can move to contact with static contact 2 and connect, and also can move with static contact 2 and separate and disengage.The closure of a breakpoint of general control, is all to adopt two groups of contacts, and two moving contacts 3 are connected, and twoStatic contact 2 is communicated with respectively the two ends of breakpoint, realizes this breakpoint by the synchronizing moving of two moving contacts 3Open and close.
Wherein 4, motor is for driving moving contact 3 to move, by drive moving contact 3 move with static contact2 contacts or separation, be mainly the rotation by motor shaft, carrys out moving of direct or indirect driving moving contact 3Moving. It should be noted that, the closure that the movement of moving contact 3 only refers to herein moves and separate mobile herein,And be not other movement. And motor herein 4 preferably adopts servomotor, to reach accurate control.Also it is emphasized that the startup of motor 4 herein, should be that Long-distance Control moves, and for motor 4Long-distance Control, can be directly by the extending at a distance to electric wire of motor 4, can also pass through wireless control moduleControl motor 4 and start, for the remote activation of motor 4, concrete can be with reference to prior art, herein notRepeat again.
In the present embodiment, be provided with motor 4 in the inside of high-voltage switch gear, and motor 4 can drive movable contact3 with the contacting and disengaging of static contact 2, the startup of motor 4 can be by remote wireless control or far awayJourney frame line traffic control, and then the start and stop that can realize Long-distance Control motor 4 control the movement of moving contact 3, enterAnd control contacting and disengaging of moving contact 3 and static contact 2. So the switch closure of this high-voltage switch gear canTo realize Long-distance Control, and no longer need staff scene to start, avoided the on-the-spot behaviour of staffDo. So this high-voltage switch gear has solved the problem of the switching over inconvenience of high-voltage switch gear effectively.
Considering in prior art, is all to promote to realize by manual draw bar, so general high voltage switchInside can be provided with isolation trolley 5 and trolley track 6, wherein trolley track 6 is relative with pedestal 1 fixing,And moving contact 3 is fixed on isolation trolley 5, to drive the movement of moving contact 3 by isolation trolley 5. This realityTo execute example and consider that in prior art, the high-voltage switch gear of type hand is provided with this parts, therefore in order to use upAmount reduces the input of cost, and the convenient improvement to type hand high-voltage switch gear, and facilitates the driving of motor 4,The high-voltage switch gear that can make the present embodiment provide comprises isolation trolley 5 and trolley track 6, and isolation trolley 5Move and driven by motor 4, concrete, can make motor 4 by transmission mechanism driving isolation dolly 5 edgesTrolley track 6 moves, and then realizes the movement that indirectly drives moving contact 3. It should be noted that herein, everyMove as translation from dolly 5, and the transmission axle of motor 4 is for rotating, so transmission mechanism should be a kind of energyEnough driver parts that rotation is converted into rectilinear movement. The kind of concrete drive disk assembly is a lot, has crankSlide block mechanism, rack and pinion drive mechanism and the transmission mechanism that some are common.
Moving contact 3 contacts with conducting with static contact 2, is separated to disconnect, so moving contact 3 and static contactBetween 2, there is certain relation that relatively moves. In order to grasp accurately the phase of moving contact 3 and static contact 2To position relationship, avoid moving contact 3 and static contact 2 excessive contact, or over-separation, can be provided with and closePut in place limit switch 7 and the limit switch 8 that point puts in place, be wherein incorporated into a limit switch 7 for moving contact 3 withAfter static contact 2 contact puts in place, control motor 4 and shut down, wherein divide put in place limit switch 8 for moving contact 3 withStatic contact 2 is controlled motor 4 after separating and putting in place and is shut down. Wherein be incorporated into a limit switch 7 and divide the limit switch that puts in place8, be all to adopt limit switch, and all passable for concrete occupation mode and the structural principle of limit switchWith reference to prior art, do not repeat them here.
Moving contact 3 contacts with static contact 2, can be to offset to contact along moving direction, but considersThe error that motor 4 starts, avoids moving contact 3 and static contact 2 excessively to offset, and can make moving contact 3 and stationary contact2 overlap joints, concrete, can make in moving contact 3 and static contact 2 one to be provided with contact, another settingHave the Chu road that matches with contact, Qie Chu road is along the moving direction setting of dolly, and Yu Chu road in contact matchesWhile closing to contact, contact can also be relative to the bearing of trend in Chu Daoyanchu road along the side of movement of isolation trolley 5To movement, drive moving contact 3 after static contact 2 moves to contact at isolation trolley 5 because contact withThe setting of touching road, makes isolation trolley 5 also have mobile surplus. It should be noted that Yu Chu road, contact hereinRelative engagement, can conducting after referring to Yu Chu road, contact and contacting, and contact is along the mistake of touching road and movingCheng Zhong can keep the state of conducting always.
Carrying out in the process of Long-distance Control, due to not at the scene, may there are some unexpected situations,For example moving contact 3 occurs loosening, no longer follows isolation trolley 5 and moves, may occur not pegging graft upper orAs expection, do not depart from and peg graft, also may, because motor 4 does not start as expection, also can causeThe closure of high-voltage switch gear does not reach expection. In order to make the startup of high-voltage switch gear, can be as on-the-spot,Directly whether normally switch by visual observation, can be provided with camera 9 in the inside of housing, this shooting9 for taking the contact condition of moving contact 3 and static contact 2, and transmission photographing information that can be real-time is to far awayJourney display place, so that remote worker can find out connecing of moving contact 3 and static contact 2 by displayThe state of touching, learns that moving contact 3 contacts or disengages with static contact 2. Consider light under ore deposit simultaneouslyLine deficiency, the especially enclosure interior of high-voltage switch gear, light is more inadequate, based on this, can make shooting9 is night-vision camera, and the structure of concrete night-vision camera and occupation mode can be with reference to existing skillsArt, does not repeat them here.
Based on the high-voltage switch gear providing in above-described embodiment, the present invention also provides a kind of high-voltage switch gear long-rangeControl system, this high-voltage switch gear tele-control system comprises any one high-voltage switch gear in above-described embodiment,The controller of high-voltage switch gear tele-control system can Long-distance Control high-voltage switch gear motor start and stop, controlling partyFormula can be wire transmission control signal, can be also wireless transmission control signal. Due to this high-voltage switch gearTele-control system has adopted the high-voltage switch gear in above-described embodiment, so this high-voltage switch gear Long-distance Control systemThe beneficial effect of system please refer to above-described embodiment.
In this description, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stressesBe and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field can be realized or useThe present invention. To be aobvious and easy for those skilled in the art to the multiple amendment of these embodimentSee, General Principle as defined herein can be in the situation that not departing from the spirit or scope of the present invention,Realize in other embodiments. Therefore, the present invention will can not be restricted to these embodiment shown in this article,But to meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a high-voltage switch gear, the static contact that comprises pedestal (1), is fixedly connected with described pedestal (1)(2) with the moving contact (3) that can move relative to described pedestal (1), it is characterized in that, also comprise useIn driving described moving contact (3) mobile to realize the motor (4) of contact separation with described static contact (2).
2. high-voltage switch gear according to claim 1, is characterized in that, also comprises isolation trolley (5)With with the relatively-stationary trolley track of described pedestal (1) (6), described in described moving contact (3) is fixed onIsolation trolley (5) is upper, and described motor (4) drives described isolation trolley (5) along institute by transmission mechanismState trolley track (6) mobile.
3. high-voltage switch gear according to claim 2, is characterized in that, described transmission mechanism is crankSlide block mechanism or rack and pinion drive mechanism.
4. high-voltage switch gear according to claim 2, is characterized in that, also comprises for moving describedContact (3) is controlled the position that is incorporated into of described motor (4) shutdown and is limit after contacting with described static contact (2) and putting in placeBit switch (7) and for separate with described static contact (2) at described moving contact (3) put in place after controlMake the limit switch (8) that puts in place that divides of described motor (4) shutdown.
5. high-voltage switch gear according to claim 2, is characterized in that, described moving contact (3) andIn described static contact (2), one is provided with contact another is provided with the Chu road that matches with described contact,Described tactile road is along the moving direction setting of described isolation trolley (5).
6. according to the high-voltage switch gear described in claim 1-5 any one, it is characterized in that, also comprise forTaking described moving contact (3) also can real-time Transmission photographing information with described static contact (2) contact conditionTo the camera (9) of remote display.
7. high-voltage switch gear according to claim 6, is characterized in that, described camera (9) isNight-vision camera.
8. a high-voltage switch gear tele-control system, is characterized in that, comprises as arbitrary in claim 1-7The controller of the motor start and stop of high-voltage switch gear described in high-voltage switch gear described in and Long-distance Control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610147374.5A CN105609336A (en) | 2016-03-15 | 2016-03-15 | High-voltage switch and high-voltage switch remote control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610147374.5A CN105609336A (en) | 2016-03-15 | 2016-03-15 | High-voltage switch and high-voltage switch remote control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105609336A true CN105609336A (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610147374.5A Pending CN105609336A (en) | 2016-03-15 | 2016-03-15 | High-voltage switch and high-voltage switch remote control system |
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| Country | Link |
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| CN (1) | CN105609336A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129852A (en) * | 2016-07-26 | 2016-11-16 | 四川汉舟电气股份有限公司 | A kind of controller switching equipment being easy to maintenance |
| CN106229822A (en) * | 2016-07-26 | 2016-12-14 | 四川汉舟电气股份有限公司 | A kind of controller switching equipment being easy to observe |
| CN108540962A (en) * | 2018-01-24 | 2018-09-14 | 兖州煤业股份有限公司 | A kind of locomotive means of communication and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203787304U (en) * | 2014-03-13 | 2014-08-20 | 厦门凯能电力科技有限公司 | Switchgear realizing fracture visualization |
| CN203983815U (en) * | 2014-07-08 | 2014-12-03 | 合肥开关厂有限公司 | New type mining Flameproof intrinsically safe high-voltage vacuum distribution equipment |
| CN204088995U (en) * | 2014-09-12 | 2015-01-07 | 无锡军工智能电气股份有限公司 | Circuit breaker electric in-and-out mechanism |
| CN204118492U (en) * | 2014-09-19 | 2015-01-21 | 无锡军工智能电气股份有限公司 | Flameproof high-voltage vacuum distribution equipment for mining |
| CN204679810U (en) * | 2015-06-18 | 2015-09-30 | 天津华宁电子有限公司 | A kind of novel Flameproof and intrinsically safe Long-distance Control power center (PC) system |
-
2016
- 2016-03-15 CN CN201610147374.5A patent/CN105609336A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203787304U (en) * | 2014-03-13 | 2014-08-20 | 厦门凯能电力科技有限公司 | Switchgear realizing fracture visualization |
| CN203983815U (en) * | 2014-07-08 | 2014-12-03 | 合肥开关厂有限公司 | New type mining Flameproof intrinsically safe high-voltage vacuum distribution equipment |
| CN204088995U (en) * | 2014-09-12 | 2015-01-07 | 无锡军工智能电气股份有限公司 | Circuit breaker electric in-and-out mechanism |
| CN204118492U (en) * | 2014-09-19 | 2015-01-21 | 无锡军工智能电气股份有限公司 | Flameproof high-voltage vacuum distribution equipment for mining |
| CN204679810U (en) * | 2015-06-18 | 2015-09-30 | 天津华宁电子有限公司 | A kind of novel Flameproof and intrinsically safe Long-distance Control power center (PC) system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129852A (en) * | 2016-07-26 | 2016-11-16 | 四川汉舟电气股份有限公司 | A kind of controller switching equipment being easy to maintenance |
| CN106229822A (en) * | 2016-07-26 | 2016-12-14 | 四川汉舟电气股份有限公司 | A kind of controller switching equipment being easy to observe |
| CN108540962A (en) * | 2018-01-24 | 2018-09-14 | 兖州煤业股份有限公司 | A kind of locomotive means of communication and device |
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Application publication date: 20160525 |
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