CN206639741U - A kind of vacuum circuit breaker speed-sensitive switch - Google Patents
A kind of vacuum circuit breaker speed-sensitive switch Download PDFInfo
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- CN206639741U CN206639741U CN201720158588.2U CN201720158588U CN206639741U CN 206639741 U CN206639741 U CN 206639741U CN 201720158588 U CN201720158588 U CN 201720158588U CN 206639741 U CN206639741 U CN 206639741U
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Abstract
The utility model discloses a kind of vacuum circuit breaker speed-sensitive switch; belong to electrotechnical, electronic protection field; the breaker speed-sensitive switch includes vacuum interrupter, self-locking mechanism and repulsion coil; the vacuum interrupter includes the first contact and the second contact, and pressure back-moving spring is provided between vacuum extinction locular wall on the inside of one end of second contact；The other end of second contact sets limited impression, and the limited impression corresponding position is provided with self-locking mechanism；Repulsion metal dish is provided with the middle part of second contact, the repulsion metal dish has been disposed proximate to repulsion coil close to the side of vacuum interrupter.The utility model is simple in construction, reliability and durability, designed based on magnetic repulsion component and self-locking mechanism, possess high response speed, can separate contact in hundreds of microseconds being connected to after action signal, should possess high initially-separate speed simultaneously, as far as possible big clearance between open contacts are formed when recovering voltage and occurring.
Description
Technical field
The invention belongs to electrotechnical, electronic to protect field, more particularly to a kind of vacuum circuit breaker speed-sensitive switch.
Background technology
Direct current power system compared with AC electric power systems, have the advantages that loss it is low, grid-connected convenient, now the U.S.,
The developed countries such as Japan, Germany have gradually adopted direct current transmission and distribution system.In addition, the isolated power system such as Modern Ships, subway
Also direct current power system is used more and more.In order to limit the short circuit current constantly increased, the safety of electrical equipment is protected, urgently
The direct current current-limiting circuit breaker that current limiting capacity is stronger, reliability is higher need to be developed.Due to electricity be present in tradition machinery formula dc circuit breaker
The ablation effect of arc, electrical endurance is shorter, current limitation effect is poor, and the solid-state switch being made up of power semiconductor is due to on-state
Excessive, selling at exorbitant prices is lost and is also difficult to popularization and application.
The content of the invention
In view of this, a kind of vacuum circuit breaker speed-sensitive switch of present invention offer is simple in construction, reliability and durability, anti-by setting
Vacuum switch is obtained the no-voltage medium recovery time after arc current forces zero passage to continued flow tube and buffer circuit, improve
The medium recovery ability of vacuum interrupter, can it is small open away from when turn off high climbing short circuit current.
The present invention is solved the above problems by following technological means：
A kind of vacuum circuit breaker speed-sensitive switch, it is characterised in that including vacuum interrupter, self-locking mechanism and repulsion coil,
The vacuum interrupter includes the first contact and the second contact, between one end inner side of second contact and vacuum extinction locular wall
It is provided with pressure back-moving spring；The other end of second contact sets limited impression, and the limited impression corresponding position is provided with
Self-locking mechanism；Repulsion metal dish is provided with the middle part of second contact, the repulsion metal dish is close to the one of vacuum interrupter
Side has been disposed proximate to repulsion coil.
Further, the self-locking mechanism includes at least two self-lock rods, and one end of the self-lock rod is provided with self-locking cunning
Wheel, the other end of the self-lock rod are provided with handle, limiting plate are provided with the middle part of the self-lock rod, is set inside the limiting plate
It is equipped with self-locking spring.
Further, first contact and the second contact both ends are parallel with fly-wheel diode, the fly-wheel diode
Negative electrode connects power supply and the first contact, the anode connection load of the fly-wheel diode and the second contact.
Further, in addition to shut-off electric capacity, shut-off switch and piezo-resistance, the shut-off electric capacity are connected with shut-off switch
Afterwards, the both ends of the fly-wheel diode are connected in parallel on, the power supply passes sequentially through shut-off electric capacity, shut-off switch connects the load,
The piezo-resistance is connected in parallel on the both ends of the fly-wheel diode.
Further, in addition to the second electric capacity, second electric capacity are connected in parallel on the both ends of the piezo-resistance.
A kind of vacuum circuit breaker speed-sensitive switch of the present invention has the advantages that：
The invention discloses a kind of vacuum circuit breaker speed-sensitive switch, belongs to electrotechnical, electronic protection field, the breaker is at a high speed
Switch includes vacuum interrupter, self-locking mechanism and repulsion coil, and the vacuum interrupter includes the first contact and the second contact, institute
State and be provided with pressure back-moving spring between vacuum extinction locular wall on the inside of one end of the second contact；The other end of second contact
Limited impression is set, and the limited impression corresponding position is provided with self-locking mechanism；Repulsion gold is provided with the middle part of second contact
Belong to disk, the repulsion metal dish has been disposed proximate to repulsion coil close to the side of vacuum interrupter.The present invention is simple in construction, reliable
It is durable, designed based on magnetic repulsion component and self-locking mechanism, possess high response speed, can be after action signal be connected to it is hundreds of micro-
Contact is separated in second, while should possess high initially-separate speed, as far as possible big clearance between open contacts are formed when recovering voltage and occurring.
The present invention proposes a kind of improvement in the vacuum switch both ends of traditional forced commutation type breaker reverse fly-wheel diode in parallel
Scheme, vacuum switch is set to obtain the dielectric strength recovery process of no-voltage after current over-zero by this improvement so that at a high speed
Vacuum switch is able to away from ShiShimonoseki broken height climbing short circuit current, substantially increase the current limliting and breaking capacity of breaker in small drive,
Have the advantages that small on-state loss, strong breaking capacity, contact burning are small, electrical endurance is long.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in embodiment will be made below
Simply introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of vacuum circuit breaker speed-sensitive switch provided by the invention；
Fig. 2 is a kind of self-locking mechanism structural representation of vacuum circuit breaker speed-sensitive switch provided by the invention；
Fig. 3 is a kind of magnetic repulsion component operation schematic diagram of vacuum circuit breaker speed-sensitive switch provided by the invention；
Fig. 4 is a kind of circuit connection diagram of vacuum circuit breaker speed-sensitive switch provided by the invention.
Embodiment
In the description of the invention, it is to be understood that term " " center ", " on ", " under ", "front", "rear", " left side ",
The orientation or position relationship of the instruction such as " right side ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are based on shown in the drawings
Orientation or position relationship, be for only for ease of the description present invention and simplify description, rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.Art
Language " first ", " second " are only used for describing purpose, and it is not intended that instruction or implying relative importance or implicit indicating institute
The quantity of the technical characteristic of instruction.Thus, " first " is defined, one can be expressed or be implicitly included to the feature of " second "
Or more this feature.In the description of the invention, unless otherwise indicated, " multiple " are meant that two or more.
Below with reference to accompanying drawing, the present invention is described in detail.
As shown in figure 1, a kind of vacuum circuit breaker speed-sensitive switch, including vacuum interrupter 1, self-locking mechanism 2 and repulsion coil
3, the vacuum interrupter 1 includes the first contact 101 and the second contact 102, one end inner side of second contact 102 and vacuum
Pressure back-moving spring 103 is provided between the wall of arc-chutes 1；The other end of second contact 102 sets limited impression 104, institute
State the corresponding position of limited impression 104 and be provided with self-locking mechanism 2；The middle part of second contact 102 is provided with repulsion metal dish 105,
The repulsion metal dish 105 has been disposed proximate to repulsion coil 3 close to the side of vacuum interrupter 1.
As shown in Fig. 2 the self-locking mechanism 2 includes at least two self-lock rods 201, one end of the self-lock rod 201 is set
There is self-locking pulley 202, the other end of the self-lock rod 201 is provided with handle 205, and the middle part setting of the self-lock rod 201 is limited
Position plate 203, the limiting plate 203 are internally provided with self-locking spring 204.
Specifically as shown in figure 3, switching initial point of high-speed response speed, height to meet novel breaker to high-speed vacuum
From the requirement of speed, it is proposed that the high-speed vacuum switch based on electromagnetic attraction mechanism：
(1) "on" position：The contact pressure of vacuum switch "on" position is self-closing by compression spring and vacuum interrupter 1
Power produces, to ensure low-resistance characteristic during vacuum switch conducting.
(2) separating brake：The pulse discharge circuit precharged during separating brake discharges suction coil, senses in suction metal dish
Go out the vortex opposite with the suction coil sense of current, suction dish is promoted by caused electromagnetic attraction between suction dish and suction coil
Moving contact quick separating is driven, contact moves to certain open away from rear, the position of the fixation separating brake of self-locking mechanism 2.
Further as shown in figure 4, the both ends of 101 and second contact of the first contact 102 are parallel with sustained diode 1,
The negative electrode connection power supply of the sustained diode 1 and the first contact 101, the anode connection of the sustained diode 1 are described negative
Carry and switch Q1 and piezo-resistance R1, the shut-off electric capacity C1 with turning off with the second contact 102, in addition to shut-off electric capacity C1, shut-off
After switch Q1 series connection, the both ends of the fly-wheel diode are connected in parallel on, the power supply passes sequentially through shut-off electric capacity C1, shut-off switch Q1
Connect the load, the piezo-resistance R1 is connected in parallel on the both ends of the sustained diode 1, in addition to the second electric capacity C2, described
Second electric capacity C2 is connected in parallel on the both ends of the piezo-resistance R1.
Specifically, in high-speed vacuum switch ends sustained diode 1 reversely in parallel, so work as reverse pulse current
After the arc extinction for forcing vacuum switch, sustained diode 1 turns on, and main circuit current is transferred to afterflow with reverse cut-off current
Diode D1, now vacuum switch both end voltage is zero, until when reverse cut-off current is again equal to main circuit current, diode
Reversely cut-off, major loop hold reverse charging to power-off, and vacuum switch both ends start to occur recovering voltage.
Specifically, the second electric capacity C2 and constituting buffer circuit, avoid voltage is excessive or electric current is excessive from causing circuit to damage.
As charging process voltage improves constantly, and reach the threshold value (1000V) of pressure sensitive voltage action in voltage, piezo-resistance R1 is opened
Begin to turn on.After piezo-resistance R1 works, turn-off circuit electric current shifts to piezo-resistance R1 branch roads, and turn-off circuit electric current turns completely
Piezo-resistance R1 branch roads are moved to, electric capacity C1 charging voltages is turned off and breaker both end voltage reaches maximum.
The invention discloses a kind of vacuum circuit breaker speed-sensitive switch, belongs to electrotechnical, electronic protection field, the breaker is at a high speed
Switch includes vacuum interrupter 1, self-locking mechanism 2 and repulsion coil 3, and the vacuum interrupter 1 includes the first contact 101 and second
Contact 102, pressure back-moving spring 103 is provided between one end inner side of second contact 102 and the wall of vacuum interrupter 1；Institute
The other end for stating the second contact 102 sets limited impression 104, and the corresponding position of limited impression 104 is provided with self-locking mechanism 2；Institute
The middle part for stating the second contact 102 is provided with repulsion metal dish 105, and the repulsion metal dish 105 is close to the side of vacuum interrupter 1
It has been disposed proximate to repulsion coil 3.The present invention is simple in construction, reliability and durability, is designed based on magnetic repulsion component and self-locking mechanism 2, has
Standby high response speed, can separate contact, while should possess high initially-separate in hundreds of microseconds being connected to after action signal
Speed, as far as possible big clearance between open contacts are formed when recovering voltage and occurring.The present invention proposes a kind of in the open circuit of traditional forced commutation type
The improvement project of the vacuum switch both ends of device reverse sustained diode 1 in parallel, makes vacuum switch in electric current by this improvement
The dielectric strength recovery process of no-voltage is obtained after zero passage so that high-speed vacuum switch is able to drive away from ShiShimonoseki broken height climbing small
Short circuit current, the current limliting and breaking capacity of breaker are substantially increased, there is small on-state loss, strong breaking capacity, contact burning
Small, the advantages that electrical endurance is long.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (5)
1. a kind of vacuum circuit breaker speed-sensitive switch, it is characterised in that including vacuum interrupter, self-locking mechanism and repulsion coil, institute
Stating vacuum interrupter includes the first contact and the second contact, is set on the inside of one end of second contact between vacuum extinction locular wall
It is equipped with pressure back-moving spring；The other end of second contact sets limited impression, and the limited impression corresponding position is provided with certainly
Latch mechanism；Repulsion metal dish is provided with the middle part of second contact, the repulsion metal dish is close to the side of vacuum interrupter
It has been disposed proximate to repulsion coil.
2. a kind of vacuum circuit breaker speed-sensitive switch according to claim 1, it is characterised in that the self-locking mechanism is included extremely
Few two self-lock rods, one end of the self-lock rod are provided with self-locking pulley, and the other end of the self-lock rod is provided with handle, described
Limiting plate is provided with the middle part of self-lock rod, the limiting plate is internally provided with self-locking spring.
3. a kind of vacuum circuit breaker speed-sensitive switch according to claim 2, it is characterised in that first contact and second
Contact both ends are parallel with fly-wheel diode, the negative electrode connection power supply of the fly-wheel diode and the first contact, the pole of afterflow two
The anode connection load of pipe and the second contact.
4. a kind of vacuum circuit breaker speed-sensitive switch according to claim 3, it is characterised in that also include shut-off electric capacity, close
Disconnect and closing and piezo-resistance, the shut-off electric capacity switchs with shut-off connect after, be connected in parallel on the both ends of the fly-wheel diode, it is described
Power supply passes sequentially through shut-off electric capacity, shut-off switch connects the load, and the piezo-resistance is connected in parallel on the fly-wheel diode
Both ends.
5. a kind of vacuum circuit breaker speed-sensitive switch according to claim 4, it is characterised in that also including the second electric capacity, institute
State the both ends that the second electric capacity is connected in parallel on the piezo-resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720158588.2U CN206639741U (en) | 2017-02-22 | 2017-02-22 | A kind of vacuum circuit breaker speed-sensitive switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720158588.2U CN206639741U (en) | 2017-02-22 | 2017-02-22 | A kind of vacuum circuit breaker speed-sensitive switch |
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| Publication Number | Publication Date |
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| CN206639741U true CN206639741U (en) | 2017-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720158588.2U Active CN206639741U (en) | 2017-02-22 | 2017-02-22 | A kind of vacuum circuit breaker speed-sensitive switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112436397A (en) * | 2020-11-26 | 2021-03-02 | 安徽东方旭电气设备有限公司 | Intelligent circuit breaker |
-
2017
- 2017-02-22 CN CN201720158588.2U patent/CN206639741U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112436397A (en) * | 2020-11-26 | 2021-03-02 | 安徽东方旭电气设备有限公司 | Intelligent circuit breaker |
| CN112436397B (en) * | 2020-11-26 | 2022-06-28 | 安徽东方旭电气设备有限公司 | Intelligent circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Vacuum circuit breaker high speed switch Effective date of registration: 20200323 Granted publication date: 20171114 Pledgee: Shaanxi cultural industry finance Company limited by guarantee Pledgor: XI'AN QIANJIN ELECTRIC INDUSTRIAL Co.,Ltd. Registration number: Y2020610000026 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210319 Granted publication date: 20171114 Pledgee: Shaanxi cultural industry finance Company limited by guarantee Pledgor: XI'AN QIANJIN ELECTRIC INDUSTRIAL Co.,Ltd. Registration number: Y2020610000026 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A high speed switch for vacuum circuit breaker Effective date of registration: 20220602 Granted publication date: 20171114 Pledgee: Shaanxi cultural industry finance Company limited by guarantee Pledgor: XI'AN QIANJIN ELECTRIC INDUSTRIAL CO.,LTD. Registration number: Y2022980007062 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |