CN1996532A - Contact unit for the circuit transformation - Google Patents
Contact unit for the circuit transformation Download PDFInfo
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- CN1996532A CN1996532A CNA2006101191209A CN200610119120A CN1996532A CN 1996532 A CN1996532 A CN 1996532A CN A2006101191209 A CNA2006101191209 A CN A2006101191209A CN 200610119120 A CN200610119120 A CN 200610119120A CN 1996532 A CN1996532 A CN 1996532A
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Abstract
This invention relates to one probe unit for circuit conversion, which adopts direct and double break points Z structure and connects joint, wherein, the motor control circuit composed of multiple devices simplifies reverse device and rotation structure to make the probe current form magnetic field force to ensure probe effective grinding and to ensure circuit conversion grinding to form one good circuit part with certain usage value and economical effect.
Description
Technical field
The present invention relates to a kind of contact unit that is used for circuit conversion, it is connected to a main multipolar electromagnetic switch device by the circuit link, and is connected to a motor load by the load link, belongs to electrical technology field.
Background technology
Running control to motor load, the structure of the circuit for controlling motor that constitutes by anti-phase controller, reversing starter, star delta starter, gear etc., be considered to the combination of (the chain parallel connection of contactor etc.) multiple device, other power supply and control system are interconnected to constitute circuitry needed, this systems bulky, and connection procedure is comparatively loaded down with trivial details.
A kind of multipolar electromagnetic conversion module that patent CN1321997A mentions is connected at least one motor by power lug, and has a plurality of load path that are equipped with transfer electron described in the unit between the joint.By a conversion electromagnet, being alternately closed of control electrode contact.This electromagnet is driven by a control circuit, and each transfer electron is included in the moving contact support between two conductors that carry fixed contact.It is characterized in that for each electrode, the moving contact support comprises two parallel ring shaped conductors that are connected to joint.And fixed contact element is that annular is connected respectively to joint.
French Patent (FRP) FR2758903 and FR2761521 disclose a kind of transducer pattern piece, and it can become reversing mode from positive revolving die formula with motor, and vice versa.
But this module volume is also very big.
Summary of the invention
The object of the present invention is to provide a kind of contact unit that is used for circuit conversion, this contact unit can be used in the switch module of motor centralized control reduced width, obtains a kind of electromagnetic conversion module.For achieving the above object, technical scheme of the present invention is: be used for the contact unit of circuit conversion, adopt the good double-breakpoint structure of arc quenching effect, two fixed contact elements are Z-shaped, and are connected to joint, and this kind mode makes its volume-diminished.
Beneficial effect of the present invention: contact unit of the present invention, owing to adopted Z-shaped contact, make the electric current formed magnetic field force that when connecting, flows through contact, strengthen the effective adhesive of contact, thereby guarantee effectively adhesive after circuit conversion, become a kind of good circuit element, contact unit of the present invention, simplified the mode of connection, thereby reduced because wiring error and the probability of generation accident.Have certain use value and economic benefit.
Below in conjunction with drawings and Examples to the present invention's detailed explanation of making comparisons.
Description of drawings
Fig. 1 is the circuit diagram of the reversible reversal contact unit that is connected with a master switch facility;
Fig. 2 is the circuit diagram of star-triangle contact unit of being connected with a master switch facility;
Fig. 3 is the circuit diagram of the twin-power switch translation function contact unit that is connected with a master switch facility;
Fig. 4 is a kind of switching device schematic internal view of switching multi-pole circuit;
Fig. 5 is the structural representation that directly moves double break point;
Fig. 6 is the directly moving connected mode schematic diagram of double break point form in the reversal switch module;
Fig. 7 is the current direction and the stressed schematic diagram of contact of traditional U-shaped contact unit;
Fig. 8 is the current direction and the stressed schematic diagram of contact of the Z-shaped contact unit of the present invention.
Embodiment
Here at first explanation, the electromagnetic switching device of the present invention by the Z sign is designed to the cooperating with multipolar electromagnetic conversion equipment C in the drawings, and this multipolar electromagnetic conversion equipment can comprise a contactor or contactor/circuit breaker type electric motor protective device.It can be comprised in the device as C in the preferred circuit, as transducer, star delta starter, and distribution system and gear.
In a device, main switchgear C holds and is in the circuit link L1 that is connected to each phase of AC power supplies, L2, and L3 and can be connected to load connector T1 on the switch module Z, T2 is between the T3.Each power line has a switch or an electrode I1 by main electromagnet control, I2, I3.
The power circuit link t1 of switch module, t2, t3 directly link the downstream link T1 of main device C, T2, and T3, and output or load (power supply) link U, V, W and u, v, w is connected on the motor.
Switch module Z can be directly installed on below the device C or skew to some extent.
Be connected circuit link t1, t2, a flip and flop generator switch electrode C1 is housed on the power line between t3 and output or the load link, C2, C3 encourages these electrodes C1, C2 by a bistable electro-magnet EM that coil is housed, C3, and their contact is alternately closed and disconnect.Link t1, t2, the quantity of t3 equals link T1, T2, the quantity of T3, electrode C1, C2, the quantity of C3 also equals or less than the quantity of link.
The equal non-migration of the relative contact-load paths of EM+PCB in the switch module, and be provided with main circuit " air chamber " at next-door neighbour installed surface place.
Electrode C1, C2, the Electric Machine Control function of the internal wiring operative norm of C3 and relevant power line, oppositely, star-triangle or distribution etc.The circuit of the power circuit of assembly is determined by the controlled function that this assembly is carried out.
With reference to Fig. 1, among this reverser embodiment shown in being, link t2 is directly connected to load link V, link t1 and t3 are by electrode C1, C3 is connected to (positive operation) load link U and W, and after switching, same electrode (reverse operating) is connected to link W and U, has so just finished conventional intersection commutation.
With reference to Fig. 2, among the embodiment of this star delta starting shown in being, circuit link t1, t2, t3 are set at a side of assembly, and load link U, V, W and load link u, v, w are set at opposite side, link U, V, W and link u, v, w is offset each other.
With reference to Fig. 3, this be shown among the embodiment of power source conversion, the end of electromagnetic switching device Z respectively with two cover power supply (L1, L2, L3 and L4, L5, L6) be connected, by electrode C1, C2, C3, the other end links to each other with multipolar electromagnetic conversion equipment C, and the other end of electromagnetic switching device C connects load link U, V, W, thus realization is to the power source conversion of load.
Be accommodated in switch module inside and be used for console switch electrode C1, C2, the bistable electro-magnet EM of the moving contact of C3 is equipped with a permanent magnet that is used for reducing energy consumption, internal control circuit Cc drives above-mentioned electromagnet EM, and electromagnet EM goes up movable magnet part and does reciprocal rectilinear motion.
Axis A-A ' the swing of moving contact carriage between first service position and second service position, in the primary importance closing of contact, in the second place, the contact is also closed.The electric current that flows through fixing zigzag conductor Cf1 or Cf2 produces magnetic attraction.This effect produces contact pressure, and this pressure is proportional with the electric current that flows through electrode.Electrode never triggers when load is arranged, thereby might reduce contact pressure, and therefore reduces required electromagnet size.
Contact system and electromagnetic system are arranged along the product length direction, and be promptly identical with the orientation of module and main body.
Adopt the directly moving double break contact of two groups of " Z " shapes to realize commutation, making the electric power between contact is suction, avoids under the short-circuit conditions contact to scold out.
The direct drive type electro magnetic system directly links with above-mentioned Direct Action Type contact, realizes the conversion of two states.
Heat when considering the main circuit breaking current is provided with one " air chamber " in the module.
Can use the mode of rotating the straight moving double-contact in the single-contact way of contact alternative embodiment.
With reference to Fig. 4, this be shown in a kind of inner adoptable a kind of layout type schematic diagram of switching device of switching multi-pole circuit.
The equal non-migration of the relative contact-load paths of EI+Cc in the switch module, and be provided with main circuit " air chamber " at next-door neighbour installed surface place
With reference to Fig. 5, this is that the switching device shifter Z that is shown in mainly comprises change over contact and galvanic circle P1 thereof, P2, P3, printing board PCB and electromagnetic system EM, wherein change over contact is Z-shaped structure, but control is directions X layout along the device for switching of the switching device Z of switching multi-pole circuit and break-make main circuit with the orientation of C with printing board PCB and electromagnetic system EM, the change over contact direction is perpendicular to installed surface, like this can so that switching device shifter Z at width, length, short transverse all has a size of optimizing, and particularly the size W with device for switching C is suitable on Width.Moving contact PD is along with the side-to-side movement of moving EMD unshakable in one's determination acts on motion simultaneously, arrive two extreme positions 1 and position 2, finish the connection and the disjunction of two-way circuit, promptly the two-way circuit alternately connects and disjunction, handoff procedure exception, the moving contact PD crossover position that mediates in handoff procedure.
With reference to Fig. 6, this be to be shown in be the directly moving connected mode schematic diagram of double break point form in reversible reversal switch module.
With reference to Fig. 7-Fig. 9, expressed the flow direction and the stressed situation of contact of U-shaped contact and Z-shaped contact electric current when connecting respectively.In traditional U-shaped contact shown in Figure 7, will produce repulsion during in closure between the dynamic/static contact under the action of a magnetic field that electric current produces, and help the contact disconnection and be unfavorable for its adhesive.And when closure, will produce suction between the dynamic/static contact under the action of a magnetic field that Z-shaped contact electric current shown in Figure 8 produces, help the stablizing of attracting state between dynamic/static contact.But since this contact unit Z be with the device for switching of break-make main circuit with the C collaborative work, the sequential of its work is device for switching C open circuit at first, circuit conversion contact unit Z changes the loop of connection then.Then connect circuit by C again, therefore contact unit Z does not bear the effect of branch deenergizing, is can guarantee stablize adhesive when the adhesive to its requirement, reaches the reliability of adhesive, so Z-shaped in the present invention contact unit, the electromagnetic force that produces owing to its given shape can guarantee its stable adhesive.Embodied its advantage.
Contact unit of the present invention is a double-breakpoint structure.Because the clearance between open contacts of single-break contact is big, impact energy is big, in most cases must use to be flexible coupling, and is unfavorable for improving mechanical endurance, and when the disjunction critical current, the arcing time is long, and contact has cunning to roll motion, so mechanical wear is big.And double break contact structure arc quenching effect is good.Especially in the low capacity ac electric apparatus, because the nearly cathode effect of breakpoint when utilizing current over-zero, extinguish arcs does not need to add special arc-control device reliably, and clearance between open contacts is little, and impact energy is little, and nothing is flexible coupling, and helps improving mechanical endurance.
Though the present invention describes with reference to the above embodiments; but those of ordinary skill in the art; will be appreciated that above embodiment is used for illustrating the present invention; should understand and wherein can make variations and modifications and do not break away from the present invention in a broad sense; so be not as limitation of the invention; as long as in connotation scope of the present invention, to the variation of above-described embodiment, the protection range that distortion all will fall into claim of the present invention.
Claims (5)
1, the contact unit that is used for circuit conversion comprises contact system, electromagnetic switch, circuit, it is characterized in that: described contact unit adopts the Direct Action Type double break to put Z-shaped structure, and is connected to joint, and this kind mode makes its volume-diminished.
2, the contact unit of circuit conversion as claimed in claim 1, it is characterized in that: described contact unit, the circuit for controlling motor that it is combined by multiple device, simplified inverter, star delta starter, the transformation mechanism mode of connection, it has reduced because wiring error and the probability of generation accident.
3, the contact unit of circuit conversion as claimed in claim 1, it is characterized in that: described contact unit, the power circuit link of its switch module is directly linked on the downstream link of main device, and output or load (power supply) link are connected on the motor; Be connected a flip and flop generator switch electrode is housed on the power line between circuit link and output or the load link, encourage these electrodes by a bistable electro-magnet that coil is housed, their contact is alternately closed, the quantity of link equals the quantity of link, and the quantity of electrode also is equal to or less than the quantity of link.
4, the contact unit of circuit conversion as claimed in claim 1 is characterized in that: described contact unit, and the relative equal non-migration of contact-load paths, and be provided with main circuit " air chamber " at next-door neighbour's installed surface place.
5, the contact unit of circuit conversion as claimed in claim 1 is characterized in that: described contact unit, its topology layout are a kind of mounting means of directly moving double break point type contact unit when realizing reversible function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101191209A CN1996532A (en) | 2006-12-05 | 2006-12-05 | Contact unit for the circuit transformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101191209A CN1996532A (en) | 2006-12-05 | 2006-12-05 | Contact unit for the circuit transformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1996532A true CN1996532A (en) | 2007-07-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101191209A Pending CN1996532A (en) | 2006-12-05 | 2006-12-05 | Contact unit for the circuit transformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1996532A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660110A (en) * | 2015-03-24 | 2015-05-27 | 尚勤贵 | Rapid connecting and disconnecting device for motor starter |
| CN112883613A (en) * | 2021-02-08 | 2021-06-01 | 哈尔滨工业大学 | Lower limit design method for impact energy of moving contact of direct-acting electromagnetic contactor |
-
2006
- 2006-12-05 CN CNA2006101191209A patent/CN1996532A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660110A (en) * | 2015-03-24 | 2015-05-27 | 尚勤贵 | Rapid connecting and disconnecting device for motor starter |
| CN112883613A (en) * | 2021-02-08 | 2021-06-01 | 哈尔滨工业大学 | Lower limit design method for impact energy of moving contact of direct-acting electromagnetic contactor |
| CN112883613B (en) * | 2021-02-08 | 2022-09-02 | 哈尔滨工业大学 | Lower limit design method for impact energy of moving contact of direct-acting electromagnetic contactor |
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