CN1214428C - Multipolar electromagnetic conversion module - Google Patents

Abstract

A multipolar electromagnetic switching module is designed to be connected by line connections to a main electromagnetic switching device (AP) and by load connections to at least one motor and having, between said connections, several load paths fitted with switching poles, each of the switching poles (C1, C2, C3) consisting of a movable contact holder (Pc) between two conductors (Cf1, Cf2) bearing fixed contacts characterized in that, for each pole, the movable contact holder (Pc) comprises two parallel loop-shaped conductors (Cm1, Cm2) connected to a connection (T1, T2, T3) and that the two fixed contact parts (Cf1, Cf2) are loop-shaped and connected to connections (U, V, W).

Description

Multipolar electromagnetic conversion module

Technical field

The present invention relates to a kind of multipolar electromagnetic conversion module.

Background technology

Known a kind of multipolar electromagnetic conversion module, it is designed to be connected to main multipolar electromagnetic conversion equipment by power lug (lineconnection), and be connected at least one motor by load connector (load connection), and have a plurality of load path between the joint described in the unit, load path is fitted with transfer electron, the contact of electrode is alternately closed and by an independent conversion solenoid actuated always, this electromagnet is driven by a control circuit, and each transfer electron is propped up by the moving contact between two conductors of carrying fixed contact and is configured to.

The known construction of circuit for controlling motor that comprises transducer, star-Δ shape starter, gear etc. is for to be combined by multiple arrangement (contactor etc.), and its power supply and control system interconnection are to produce required circuit.But such systems bulky.

French Patent (FRP) FR2,758,903 and FR2,761,521 disclose a kind of transducer pattern piece, and it can change motor into reversing mode from positive revolving die formula, and vice versa.But this module is also very huge.

Summary of the invention

The objective of the invention is to obtain a kind of electromagnetic conversion module, it comprises a conversion chamber and an independent trigger transfer electron, and this electrode has the electromagnetic property of enhancing.Owing to the electromagnetic property of described electrode and the structure in conversion chamber, this transfer electron remains on conversion outside closure with special effective and efficient manner always.

Correspondingly, the invention provides a kind of multipolar electromagnetic conversion module, it is designed to be connected to main multipolar electromagnetic conversion equipment by power lug, and be connected at least one motor by load connector, and have a plurality of load path that are fitted with transfer electron described in the unit between power lug and the described load connector, the contact of described electrode is alternately closed always and is changed magnet control by one, this electromagnet is driven by a control circuit, and each transfer electron is included in the moving contact support between two fixed conductors that carry fixed contact.Modular converter according to the present invention is characterised in that, for each electrode, but the moving contact support comprises the moving-conductor of the annular of two parallel connections that are connected to power lug, and two fixed conductors are for annular and be connected to load connector.

Description of drawings

Describe the present invention in detail below with reference to the embodiment that provides in the accompanying drawings as example.Wherein:

Fig. 1 is the circuit diagram of the conversion type modular converter that links to each other with main conversion equipment;

Fig. 2 is the circuit diagram of star-△ shape modular converter of linking to each other with main conversion equipment;

Fig. 3 is the circuit diagram of the distribution type modular converter that links to each other with main conversion equipment;

Fig. 4 is the circuit diagram of the variable speed model modular converter that links to each other with main conversion equipment;

Fig. 5 is the decomposition diagram that illustrates according to the internal structure of module of the present invention;

Fig. 6 is a perspective view of finishing the bottom of the module that switches to power circuit;

Fig. 7 is the schematic diagram of the transfer electron of module;

Fig. 8 is the detail view of electrode, the power line of a wherein not shown fixed contact;

Fig. 9 is the cutaway view by the P of Fig. 8;

Figure 10 is the view of the Electromagnetic Control circuit of module.

Embodiment

Electromagnetic switching device of the present invention by the M sign is designed to the cooperating with multipolar electromagnetic conversion equipment Ap 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 Ap in the preferred circuit, as transducer, star-△ shape starter system, distribution system and gear.

In a unit, main conversion equipment Ap puts the electrode power line, and these lines are arranged between power lug L1, L2, the L3 that is connected to each phase of AC power supplies and load connector T1, the T2 that can be connected to modular converter M, the T3.Every power line has a switch or electrode I1, I2, I3, and they are controlled by main electromagnet E, and this magnet spool B is by two power connection A1 and A2 power supply.

Modular converter M is housed among the unit B o, and its rear portion is provided with the fastening substrate P in plane more or less, and it can be secured on a guide rail or the plate.The electric wire of modular converter M (power) joint is directly connected to downstream joint T1, T2, the T3 of main device Ap, and its output or load (power supply) joint U, V, W and u, v, w are connected to motor or a plurality of motor.

Modular converter M can be directly installed on below the device Ap, or is biased.

The power line that extends between power lug t1, t2, t3 and output or load connector is fitted with independent flip and flop generator transfer electron C1, C2, C3.The bistable electro-magnet EI that these electrodes C1, C2, C3 are fitted with coil Bb triggers, and their contact is except be alternately closed the transition period always.Module M does not have arc-control device, and therefore can not work under loaded situation.The quantity of joint t1, t2, t3 is identical with the quantity of joint T1, T2, T3, and the quantity of electrode C1, C2, C3 also this quantity with joint is identical or less.

The Electric Machine Control function of the internal wiring Sc operative norm of electrode C1, C2, C3 and relevant power line: transducer, star-△ shape or distribution, low speed/at a high speed.The controlled function that this module is performed is depended in the wiring of the motor circuit of module M.

In transducer embodiment shown in Figure 1, power lug t3 is directly connected to load connector W.Power lug t1 and t2 are connected to load connector U and V (positive operation) through electrode C1 and C2, and switch back (reverse operating) at these electrodes, are connected to joint V and U, intersect thereby finish general phase place.

Embodiment shown in Fig. 2,3 and 4 is designed to carry out star-△ shape starting, distribution and speed change respectively, power lug t1, t2, t3 are arranged on a side of module, and load connector U, V, W (star-△ shape, first motor or high-speed starting) and load connector u, v, w (star-△ shape, second motor or low speed starting) are set at opposite side.Joint U, V, W and joint u, v, w stagger toward each other.

The inboard also bistable electro-magnet EI of the moving contact of manipulation transforms electrode C1, C2, C3 that is contained in modular converter M is fitted with the permanent magnet that is designed to reduce energy dissipation.Described electromagnet EI is driven by internal control circuit Cc shown in Figure 10.The movable magnetic part of electromagnet EI can replace rectilinear motion, moves transfer electron C1, C2, C3 by slide block Ra.The shifting axle of this electromagnet preferably is parallel to fastening plane P f and joint.

The circuit that modular converter M is configured to transfer electron C1, C2, C3 and is associated, and the electrode control assembly that constitutes by electromagnet EI and control circuit Cc, in the direction perpendicular to the back fastening surface Pf of module is that stagger or isolated, therefore, the width L of module equals the width of the main conversion equipment Ap that is associated substantially.Thereby width L is less than the width of the standard set-up of carrying out identity function.The conductor Sc of transfer electron C1, C2, C3 and circuit (transducer etc.) places to the rear portion, and electromagnet EI places forward with relevant control circuit Cc.

Each transfer electron C1, C2 that schematically illustrates in Fig. 6 or C3 are for changing type (promptly, the contact is closed always), and comprise a moving contact support Pc, but parallel moving-conductor Cm1, the Cm2 of two annulars of this rack bearing, and they carry moving contact P1 and P2 respectively.But these moving-conductors link to each other at joint t1, t2, t3 place.Contact holder Pc is around a pin Ax and the axis A-A ' swing between fixed conductor Cf1, the Cf2 of two carrying fixed contact P3 and P4.These fixed conductors Cf1, Cf2 also be annular and be connected among joint U, V, the W one or two.In an illustrated embodiment, described axis normal is in the fastening plane P f in back.

Axis A-A ' the swing of moving contact carriage Pc between first service position and second service position, in the primary importance closing of contact, in the second place, the contact is also closed.But flow through moving-conductor Cm1 or Cm2 and produce magnetic attraction with the electric current that parallel direction flows through corresponding fixed conductor Cf1 or Cf2.This annular 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 nominal contact pressure, and therefore reduces the size of required electromagnet.

The moving part of electromagnet acts on each electrode spring Rp by an element Pi, and driving sliding block Ra is parallel to the fastening plane P f translation in back.

Fixed conductor Cf1, Cf2 are the extra conductor of load (power supply) joint U, V, W or the control circuit Sc that extension constitutes a motor or a plurality of motors with the end.Described extension or extra conductor are received within the load connector side of unit B o.

Magnetic core No can be housed between them but moving-conductor Cm1, the Cm2 of contact holder PC are enough far away apart each other.Described magnetic core No and the subplate Cp1, the Cp2 cooperating that are fastened on the inboard, conversion chamber that puts electrode.But moving-conductor Cm1, Cm2 are connected to power lug as t3 by a flexible electrical connector Tr and as the conductor of Co3.

Control input and output joint is provided with forward.Input adapter A2, A1, A1 ', B1, B1 ' are designed to receive the motor command signal, out splice going splice SA1, S21, S22 and relevant main conversion equipment Ap cooperating.

Main conversion equipment Ap comprises an interlocking contact Ve, and it is triggered by the moving part of electromagnet E, and is connected to two joints 21 and 22, and these two joints can be connected to joint SA1 and the SA2 of module M.

The coil Bb of electromagnet EI is powered, so that it is polarized in a direction or other direction.This order can be finished by two auxiliary converter contact 1a and 1b, and these two contacts are triggered by the moving part of bistable electro-magnet EI, and links to each other with diode 7a, 7b.Modular converter M can comprise other auxiliary contact, and as 3 and 6, they also can be triggered by the moving part of electromagnet EI.

In order to finish the present invention, the contact Bp2 of the contact Bp1 of control " direction one " operation and control " direction two " operation is connected to joint A1, A ' 1, B1, the B ' 1 of modular converter M." direction one " is interpreted as one of two mode of operations of finger print piece, that is, and and the star schema of the forward work of transducer or star-△ shape." direction two " is interpreted as finger second pattern, that is, and and reverse operation or △ shape pattern.

The work of modular converter will be described now.

In position shown in Figure 10, the electromagnet EI of main conversion equipment Ap is powered via ON/OFF switch MA, contact Bp1, Bp2 and 6.Power electrode I1, I2 and the I3 of main conversion equipment Ap is in " direction one " service position.The transfer electron of modular converter M such as C1, C2 are in " direction one " service position (these electrodes are in the close position always).

In order to change to " direction two ", the operator opens contact Bp2 and closed relevant contact Bp2.Opened break of contact to the power supply of the coil of main conversion equipment Ap.Then, the mains switch I1 of main conversion equipment Ap opens to I3.

Close closed contact Bp2 the coil Bb of module M is energized, thus changeover contact, as C1, C2.The auxiliary contact conversion of module M, and the electric electromagnet E that is introduced to main conversion equipment Ap are so that mains switch I1-I3 is moved.

Only conversion when power contact I1-I3 opens of the electromagnet EI of modular converter M.This safety function is guaranteed by interlocking contact Ve.Close when in addition, power contact I1-I3 is positioned at the tram in the contact of modular converter M.

For fear of cutting off the electricity supply when electromagnet EI moves, auxiliary contact must change the position after electromagnet EI has moved its whole or most of strokes.One state transformation deferred mount can link to each other with these three contacts.

Very clear, do not deviating under the scope prerequisite of the present invention, it is contemplated that other form and improvement, or use the device of equivalence.

For example, other form can avoid using semiconductor (diode or small-sized protection component) in circuit Cc.

Claims (7)

1. multipolar electromagnetic conversion module, it is designed to be connected to main multipolar electromagnetic conversion equipment (AP) by power lug, and be connected at least one motor by load connector, and have a plurality of load path that are fitted with transfer electron described in the unit (Bo) between power lug and the described load connector, the contact of described electrode is alternately closed always and is controlled by a conversion electromagnet (EI), this electromagnet is driven by a control circuit, each transfer electron (C1, C2, C3) be included in two fixed conductor (Cf1 that carry fixed contact, Cf2) the moving contact support (Pc) between, it is characterized in that, for each electrode, moving contact support (Pc) but comprise the moving-conductor (Cm1 of two parallel annulars that are connected to power lug, and two fixed conductor (Cf1 Cm2),, Cf2) be annular and be connected to load connector.

2. module as claimed in claim 1 is characterized in that, magnetic core (No) can be received between them but the moving-conductor of moving contact support (Cm1, Cm2) is enough far away apart each other.

3. module as claimed in claim 2 is characterized in that, magnetic core (No) and subplate (Cp1, the Cp2) cooperating that is fastened on the inboard, conversion chamber that puts electrode.

4. module as claimed in claim 1 or 2 is characterized in that, but two moving-conductors (Cm1, Cm2) are connected to a power lug by flexible electrical connector (Tr).

5. module as claimed in claim 1 or 2 is characterized in that, module is the conversion type, and comprises power lug on a side, and comprises load connector at opposite side.

6. module as claimed in claim 1 or 2, it is characterized in that, module is star-△ shape starter, distribution or variable speed model, and on a side, comprise power lug, and for first kind of job category, comprise load connector at opposite side, and, comprise load connector at opposite side for second kind of job category.

7. module as claimed in claim 1 or 2 is characterized in that, moving contact support (Pc) is fitted with pin or U-shaped electrode spring (Rp), and is handled by the mobile slide block (Ra) of electromagnet (EI).

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