CN109830401A - A kind of vacuum switch - Google Patents

A kind of vacuum switch Download PDF

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Publication number
CN109830401A
CN109830401A CN201910269095.XA CN201910269095A CN109830401A CN 109830401 A CN109830401 A CN 109830401A CN 201910269095 A CN201910269095 A CN 201910269095A CN 109830401 A CN109830401 A CN 109830401A
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CN
China
Prior art keywords
magnetic
contact
moving
moving contact
insulation crust
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Pending
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CN201910269095.XA
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Chinese (zh)
Inventor
岳盛仙
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岳盛仙
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Priority to CN201910269095.XA priority Critical patent/CN109830401A/en
Publication of CN109830401A publication Critical patent/CN109830401A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to a kind of vacuum switches, including vacuum interrupter and magnetic control operating mechanism, the vacuum interrupter includes insulation crust, and it is located at the static side conductive column in insulation crust, static contact, moved end conductive column, moving contact and shielding case, the magnetic control operating mechanism includes controller, the quiet part of magnetic and magnetic moving part, the quiet part of the magnetic and magnetic moving part are arranged in the insulation crust, the magnetic moving part and the moving contact are drivingly connected, the controller is located at outside the insulation crust, and it is electrically connected with the quiet part of the magnetic, suction or repulsion are generated to control the quiet part of the magnetic to the magnetic moving part, to drive the moving contact that can move towards or away from the static contact, to realize the conjunction between moving contact and static contact or divide, the vacuum switch eliminates delicate bellows, it is led with solving existing vacuum interrupter because of bellows The various problems caused.

Description

A kind of vacuum switch
Technical field
The present invention relates to vacuum switch fields, are specifically related to a kind of vacuum switch of magnetic drive.
Background technique
Vacuum switch is a kind of for controlling and protecting the electrical equipment of electric system, it passes through control vacuum interrupter The open and close of circuital current is realized in the closures of two electrode contacts in (also known as vacuum switch tube), separation, thus Achieve the purpose that control electric system.Vacuum interrupter is the core component of vacuum switch, it is by being sealed in vacuum tank In contact control, extinguish the device of electric arc.
In existing vacuum interrupter, bellows is indispensable element, not only can guarantee the sealing of arc-chutes, but also The relative motion of dynamic and static contact can be realized by it, bellows is the motion seal part for being welded on moved end cover board, and bellows exists The movement that recovery is compressed or extended when switching on and off carries out reciprocal mechanical movement, therefore, vacuum switch in arc-chutes Splitting or integrating each time, all make the axially retractable generation mechanically deform of bellows, acutely, the mechanically deform of high frequency is easy to make ripple Pipe is tired and is damaged.And with using the time elongated and number of operations increase, bellows can cause elasticity to be deteriorated or break because of fatigue It splits, causes vacuum interrupter air inlet, vacuum interrupter insulation performance is caused not enough to puncture and even explode.
In addition, the driving force of existing vacuum switch is applied by vacuum interrupter external agency, outside this The power that mechanism applies also needs the powerful resistance for overcoming bellows compression to generate, so that the conjunction point of vacuum interrupter needs powerful energy Source, thus external agency is bulky, causes entire small product size huge.
Summary of the invention
The present invention is intended to provide a kind of vacuum switch, which passes through the magnetic force mechanism being arranged in vacuum extinction room It drives the dynamic and static contact to work, delicate bellows is eliminated, caused by solving existing vacuum interrupter because of bellows Various problems.
Concrete scheme is as follows:
A kind of vacuum switch, including vacuum interrupter and magnetic control operating mechanism, the vacuum interrupter include insulation crust, And it is located at static side conductive column, static contact, moved end conductive column, moving contact and shielding case in insulation crust, the static side is conductive One end of column is electrically connected with the static contact, and the other end is exposed to the insulation crust, one end of the moved end conductive column and dynamic Contact electrical connection, the other end expose insulation crust, and the shielding case is set to the side of the static contact;The magnetic control operating mechanism Including controller, the quiet part of magnetic and magnetic moving part, the quiet part of the magnetic and magnetic moving part are arranged in the insulation crust, the magnetic moving part It is drivingly connected with the moving contact, the controller is located at outside the insulation crust, and is electrically connected with the quiet part of the magnetic, with control It makes the magnetic quiet part and suction or repulsion is generated to the magnetic moving part, to drive the moving contact can be towards or away from described quiet Contact movement, to realize the conjunction between moving contact and static contact or divide.
Further, the quiet part of the magnetic is electrical permanent-magnet, and the magnetic moving part is permanent magnet, and the quiet part of magnetic can be to described Magnetic moving part generates suction and repulsion, to drive the moving contact that can move towards or away from the static contact, to realize dynamic touching Head static contact between conjunction or point.
Further, further include a connecting rod, one end of the connecting rod is connect with the moving contact, the other end with it is described The connection of magnetic moving part.
Further, it is also fixedly installed with a fixing piece on the one end of the moving contact far from the static contact, this is fixed The recessed portion that is arranged with an open end towards the moving contact direction on part and along the connecting rod axis direction with it is described The through-hole of recessed portion connection, the middle part of the connecting rod have the blocking portion for protruding from its outer peripheral surface, one end of the connecting rod It is fixedly connected across the through-hole with the magnetic moving part, and the blocking portion is limited in the recessed portion, the connecting rod The other end is located in the recessed portion, and is arranged with a snubber elastomeric part.
Further, recessed with being arranged with the connecting rod face on the end face of the fixed fixing piece of the moving contact Chamber, and the internal diameter of the cavity is greater than the outer diameter of the connecting rod.
Further, the inner wall clearance fit of the outer peripheral surface of the blocking portion and the recessed portion is arranged.
Further, it is additionally provided with a partition in the insulation crust, which divides the space in the insulation crust It is separated out the first accommodating space and the second accommodating space, the moving contact, static contact are located in the first accommodating sky, and the magnetic is quiet Part and the magnetic moving part are located in second accommodating space.
Further, it is realized and is electrically connected by connecting wire between one end and moving contact of the moved end conductive column, the company Connecing conducting wire has the surplus moved with the moving contact.
Further, the connecting wire is the linear conducting wire of braiding, can be moved with the moving contact and extend or Person shrinks.
Vacuum switch provided by the invention has the advantage that vacuum switch provided by the invention compared with prior art The splitting or integrating between moving contact and static contact is realized with magnetic control operating mechanism, and magnetic control operating mechanism is to be set up directly on very In the insulation crust of empty arc-chutes, guarantee between the sealing and dynamic and static contact of vacuum interrupter without the use of bellows Splitting or integrating, therefore there is no existing vacuum interrupters because of various defects caused by bellows.
In addition, when carrying out splitting or integrating lock, magnetic control operating mechanism only needs relatively much smaller due to eliminating bellows Power the splitting or integrating between dynamic and static contact can be realized, can directly be realized by magnetic control operating mechanism between dynamic and static contact Splitting or integrating, the huge operating mechanism of existing vacuum switch is omitted, the volume of the vacuum switch can be reduced and reduce its at This.
Detailed description of the invention
Fig. 1 shows the schematic diagram of vacuum switch.
Fig. 2 shows moving contact and the schematic diagrames of connecting rod.
Specific embodiment
To further illustrate that each embodiment, the present invention are provided with attached drawing.These attached drawings are that the invention discloses one of content Point, mainly to illustrate embodiment, and the associated description of specification can be cooperated to explain the operation principles of embodiment.Cooperation ginseng These contents are examined, those of ordinary skill in the art will be understood that other possible embodiments and advantages of the present invention.In figure Component be not necessarily to scale, and similar component symbol is conventionally used to indicate similar component.
Now in conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Figure 1, the present invention provides a kind of vacuum switches comprising vacuum interrupter and magnetic control operating mechanism.Its In, the vacuum interrupter includes insulation crust 10 and the static side conductive column 11 being located in insulation crust, static contact 12, moves Hold conductive column 13, moving contact 14 and shielding case 15.Insulation crust 10 is usually ceramic shell, and but not limited to this, existing Insulation crust made of the other materials of vacuum interrupter can also be applied to this, and the space in insulation crust 10 is formed by processing Meet the vacuum environment of vacuum interrupter requirement.
One end of the static side conductive column 11 is electrically connected with the static contact 12, and the other end is exposed to the insulation crust 10, one end of the moved end conductive column 13 and moving contact 14 are electrically connected, and the other end is exposed to the insulation crust 10, are exposed to absolutely Static side conductive column 11 and moved end conductive column 13 outside edge shell 10 are used to be attached with the cable of external power system.It is described Shielding case 15 is located at around the static contact 12, to realize its shielding action.
The magnetic control operating mechanism includes controller 20, the quiet part 21 of magnetic and magnetic moving part 22, the quiet part 21 of the magnetic and magnetic moving part 22 are arranged in the insulation crust 10, wherein the magnetic moving part 22 is drivingly connected with the moving contact 14, the controller 20 are located at outside the insulation crust 10, and are electrically connected with the quiet part 21 of the magnetic, dynamic to the magnetic to control the quiet part 21 of the magnetic Part 22 generates suction or repulsion, to drive the moving contact 14 that can move towards or away from the static contact 12, to realize Conjunction between moving contact 14 and static contact 12 or point, so that the open and close of circuital current is realized, to reach control electric power The purpose of system.
With reference to Fig. 1, since the quiet part 21 of magnetic and magnetic moving part 22 of driving moving contact 14 are respectively positioned on inside insulation crust 10, It need to only consider the whole vacuum leakproofness of insulation crust 10, need to consider that moving contact connects without such as existing vacuum interrupter Movable sealing performance between bar and insulation crust, thus vacuum interrupter provided by the present embodiment goes out relative to existing vacuum Arc chamber can have higher vacuum degree.And the reciprocating motion of moving contact 14 is realized by magnetic control operating mechanism, does not need wave Line pipe provides restoring force, eliminates easy failure, service life short bellows, can extend the service life and drop of vacuum interrupter Low accident rate.
It needs it is clear that magnetic control operating mechanism can be the mechanism such as similar electromagnet, if the quiet part 21 of magnetic is to the magnetic moving part 22 be electromagnet or one is hard magnetic body, and another is electromagnet, only need to can be realized the quiet part 21 of magnetic to the magnetic moving part 22 Repulsion and suction can be generated, the repulsion generated needs to meet: when the quiet part 21 of magnetic generates repulsion to the magnetic moving part 22 When, the moving contact 14 can be in contact with static contact 12, to realize the closure of circuital current;And when the quiet part 21 of magnetic is to the magnetic When moving part 22 generates suction, the moving contact 14 can be separated with static contact 12, to realize the disconnection of circuital current.And the control It is the prior art that device 20 processed, which controls the quiet part 21 of the magnetic and generates suction or repulsion to the magnetic moving part 22, thus herein without It repeats.
In the present embodiment kind, it is preferred that the quiet part 21 of magnetic is electrical permanent-magnet (Electro Permanent Magnet- EPM), the magnetic moving part 22 is permanent magnet, since electromagnet can lose its magnetic in the case where magnetic control operating mechanism accident power-off Power, and magnetic moving part 22 is in the case where the quiet part 21 of magnetic loses magnetic force, may be due to leading to moving contact 14 and quiet under gravity Contact 12 is in contact, and leads to the closure of circuital current, this may result in danger.Therefore the quiet part 21 of magnetic is preferably electrical permanent-magnet, Magnetic moving part 22 is preferably permanent magnet, in the event of a power failure, the magnetic pole of the hard magnetic body in magnetic moving part 22 and as magnetic moving part 22 The magnetic pole of permanent magnet forward surface be opposite, therefore can still generate suction to the magnetic moving part 22, operate machine in magnetic control The case where structure accident power-off, guarantees the safety of the vacuum switch.And in the case where needing to realize circuital current closure, as magnetic The electrical permanent-magnet of quiet part 21 changes under the action of electric current towards the magnetic pole on 22 face of magnetic moving part, to generate reprimand to the magnetic moving part Power is closed between moving contact and static contact with driving the moving contact 14 that can move towards the static contact 12 with realizing.
And relative to electromagnet, electrical permanent-magnet has a better reaction speed, thus some needs carry out frequently into Under the application of row folding, electrical permanent-magnet also has more advantage compared with electromagnet.
With reference to Fig. 1 and Fig. 2, in the present embodiment, preferably, further including a connecting rod 16, one end of the connecting rod 16 It is connect with the moving contact 14, the other end is connect with the magnetic moving part 22, to increase at magnetic moving part 22 and dynamic and static contact closure it Between distance.Since high fever in short-term can be generated during dynamic and static contact closure, on the contact surface of dynamic and static contact, therefore The high temperature for a short time influence magnetic moving part 22 that increasing the distance between magnetic moving part 22 and 12 contacting surface of static contact can prevent leads to it Demagnetization.
Preferably, with reference to Fig. 1 and Fig. 2, the moving contact 14 is also fixedly installed on one end far from the static contact 12 One fixing piece 17, the recessed portion 170 being arranged with an open end towards 14 direction of moving contact on the fixing piece 17 and edge The through-hole 172 that 16 axis direction of connecting rod is connected to the recessed portion 170, the middle part of the connecting rod 16, which has, to be protruded from The blocking portion 160 of its outer peripheral surface, one end of the connecting rod 16 pass through the through-hole 172 and are fixedly connected with the magnetic moving part 22, And the blocking portion 160 is limited in the recessed portion 170, the other end of the connecting rod 16 is located in the recessed portion 170, And it is arranged with a snubber elastomeric part 18.Due to being indirect be fixedly connected between one end and the magnetic moving part 22 of connecting rod 16 , during dynamic and static contact closure, snubber elastomeric part 18 can energy-absorbing and reduce bounce time.
More optimizedly, with reference to Fig. 2, have on the end face of the fixed fixing piece 17 of the moving contact 14 and the connecting rod The cavity 140 of 16 faces setting, and the internal diameter of the cavity 140 is greater than the outer diameter of the connecting rod.In the mistake of dynamic and static contact closure A part of Cheng Zhong, 16 end of connecting rod can extend into a cavity 140, so that snubber elastomeric part 18 is made with better energy-absorbing With, and then further decrease bounce time.
Another to be preferably, with reference to Fig. 2, the outer peripheral surface of the blocking portion 160 and the inner wall gap of the recessed portion 170 are matched Setting is closed, during dynamic and static contact closure, the inner wall of recessed portion 170 can play the role of guiding, to guarantee to connect Extension bar 16 is moved along its axis direction.
In the present embodiment, another preferably, be additionally provided with a partition 19 in the insulation crust 10 with reference to Fig. 1, should be every Space in the insulation crust 10 is separated out the first accommodating space 100 and the second accommodating space 102, the moving contact by plate 19 14, static contact 12 is located in first accommodating space 100, and the quiet part 21 of magnetic and the magnetic moving part 22 are located at described second and hold In emptying, moving contact 14, static contact 12 and the quiet part 21 of magnetic and magnetic moving part 22 are separated, to avoid the contact of dynamic and static contact When generate high fever in short-term the quiet part of magnetic 21 and magnetic moving part 22 had an impact.
In the present embodiment, another preferably, with reference to Fig. 1, between one end and moving contact 14 of the moved end conductive column 13 It is realized and is electrically connected by connecting wire 130, which has the surplus moved with the moving contact 14, in order to dynamic Hold the electrical connection between conductive column 13 and moving contact 14.More optimizedly, the connecting wire 130 is the linear conducting wire of braiding, It can be moved with the moving contact 14 and extend or shrink and be hardly damaged.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright It is white, it is not departing from the spirit and scope of the present invention defined by the appended claims, it in the form and details can be right The present invention makes a variety of changes, and is protection scope of the present invention.

Claims (9)

1. a kind of vacuum switch, it is characterised in that: including vacuum interrupter and magnetic control operating mechanism, the vacuum interrupter includes Insulation crust and the static side conductive column being located in insulation crust, static contact, moved end conductive column, moving contact and shielding case, it is described One end of static side conductive column is electrically connected with the static contact, and the other end is exposed to the insulation crust, the moved end conductive column One end and moving contact electrical connection, the other end are exposed to the insulation crust, and the shielding case is set to the static contact side; The magnetic control operating mechanism includes controller, the quiet part of magnetic and magnetic moving part, and the quiet part of the magnetic and magnetic moving part are arranged at the insulation In shell, the magnetic moving part and the moving contact are drivingly connected, and the controller is located at outside the insulation crust, and with it is described The quiet part electrical connection of magnetic, generates suction or repulsion to control the quiet part of the magnetic to the magnetic moving part, to drive the moving contact energy It is enough to be moved towards or away from the static contact, to realize the conjunction between moving contact and static contact or divide.
2. vacuum switch according to claim 1, it is characterised in that: the quiet part of magnetic is electrical permanent-magnet, the magnetic moving part For permanent magnet, the quiet part of magnetic can generate suction and repulsion to the magnetic moving part, with drive the moving contact can towards or It is moved far from the static contact, to realize the conjunction between moving contact and static contact or divide.
3. vacuum switch according to claim 2, it is characterised in that: further include a connecting rod, one end of the connecting rod It is connect with the moving contact, the other end is connect with the magnetic moving part.
4. vacuum switch according to claim 3, it is characterised in that: on the one end of the moving contact far from the static contact Also be fixedly installed with a fixing piece, the recessed portion that is arranged with an open end towards the moving contact direction on the fixing piece and The through-hole being connected to along the connecting rod axis direction with the recessed portion, the middle part of the connecting rod, which has, protrudes from its outer peripheral surface Blocking portion, one end of the connecting rod passes through the through-hole and is fixedly connected with the magnetic moving part, and the blocking portion is limited in In the recessed portion, the other end of the connecting rod is located in the recessed portion, and is arranged with a snubber elastomeric part.
5. vacuum switch according to claim 4, it is characterised in that: on the end face of the fixed fixing piece of the moving contact With the cavity being arranged with the connecting rod face, and the internal diameter of the cavity is greater than the outer diameter of the connecting rod.
6. vacuum switch according to claim 4, it is characterised in that: the outer peripheral surface of the blocking portion and the recessed portion The setting of inner wall clearance fit.
7. vacuum switch according to claim 1, it is characterised in that: a partition is additionally provided in the insulation crust, it should Space in the insulation crust is separated out the first accommodating space and the second accommodating space, the moving contact, static contact by partition In the first accommodating sky, the quiet part of magnetic and the magnetic moving part are located in second accommodating space.
8. vacuum switch according to claim 1, it is characterised in that: between one end and moving contact of the moved end conductive column It is realized and is electrically connected by connecting wire, which has the surplus moved with the moving contact.
9. vacuum switch according to claim 8, it is characterised in that: the connecting wire is the linear conducting wire of braiding, It can be moved with the moving contact and extend or shrink.
CN201910269095.XA 2019-04-04 2019-04-04 A kind of vacuum switch Pending CN109830401A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910269095.XA CN109830401A (en) 2019-04-04 2019-04-04 A kind of vacuum switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910269095.XA CN109830401A (en) 2019-04-04 2019-04-04 A kind of vacuum switch

Publications (1)

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CN109830401A true CN109830401A (en) 2019-05-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111952107A (en) * 2020-07-03 2020-11-17 淮南生橘网络科技有限公司 Low-voltage vacuum circuit breaker based on Internet of things
WO2021078207A1 (en) * 2019-10-25 2021-04-29 北京京人电器有限公司 Switching transistor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021078207A1 (en) * 2019-10-25 2021-04-29 北京京人电器有限公司 Switching transistor
CN111952107A (en) * 2020-07-03 2020-11-17 淮南生橘网络科技有限公司 Low-voltage vacuum circuit breaker based on Internet of things

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