CN206203613U - Envelope star delay protection device - Google Patents
Envelope star delay protection device Download PDFInfo
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- CN206203613U CN206203613U CN201621254402.5U CN201621254402U CN206203613U CN 206203613 U CN206203613 U CN 206203613U CN 201621254402 U CN201621254402 U CN 201621254402U CN 206203613 U CN206203613 U CN 206203613U
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Abstract
The utility model discloses a kind of envelope star delay protection device, including rectification circuit, envelope star contactor and electric discharge continuous current circuit；Rectification circuit includes DC side positive terminal and DC side negative terminals；Positive terminal, the negative terminals for sealing star contactor are electrically connected with DC side positive terminal, DC side negative terminals respectively；Electric discharge continuous current circuit include be in parallel setting discharge circuit and after current circuit, discharge circuit includes electric capacity, the positive pole of electric capacity, after one end of current circuit be electrically connected at DC side positive terminal, envelope star contactor positive terminal, the negative pole of electric capacity, after current circuit the other end be electrically connected at DC side negative terminals, envelope star contactor negative terminals.During elevator stopping, being discharged by electric capacity, the electric discharge continuous current circuit formed after current circuit, realize driving permanent-magnet synchronous the time delay of main frame to seal star, it is to avoid seal star when permanent-magnet synchronous drive main frame high-speed cruising and cause the situation of high current short circuit to occur.
Description
Technical field
The utility model is related to elevator safety technical field, more particularly to one kind to be applicable for use with permanent-magnet synchronous and drive main frame
Elevator envelope star delay protection device.
Background technology
The elevator of main frame is driven using permanent-magnet synchronous, when elevator stops, it is necessary to permanent-magnet synchronous are driven with U, V, W of main frame
Three-phase windings carry out envelope star protection, it is to avoid the risk for causing main frame that high speed car slipping occurs because band-type brake fails occurs.To three-phase
Winding is carried out after envelope star, when elevator occurs car slipping under band-type brake failure conditions, then low because U, V, W three-phase windings are shorted
Fast car slipping, will not produce harm to equipment and personnel.Wherein, the principle of permanent-magnet synchronous driving main frame envelope star is：When car is unloaded
When up or heavily loaded descending and elevator is in unexpected state out of hand, counterweight or car drive permanent-magnet synchronous to drive main frame rotation
Turn, permanent-magnet synchronous drive main frame equivalent to generator, and its three-phase windings becomes the output of generator；Now seal star contactor KM2
In release conditions, the normally-closed contact 21,22 and 31,32 short circuits of KM2 three-phase windings U, V, W of motor, generator output is short
Road, and the short circuit current of moment is very big, the resistance for driving the rotor of main frame to be subject to is very big, plays braking action, makes elevator slow
Operation, prevents elevator from rushing to summit or crouching bottom at a high speed, plays safeguard protection effect.
But, when elevator is in high-speed cruising, unexpected jerk drives the inertia of main frame due to permanent-magnet synchronous, at a high speed
Can not immediately be stopped under running status, in the presence of permanent magnet, main frame is converted into generator, transient high-current can be produced,
Instantaneous short circuit high current can produce harm to the frequency converter of drive system, contactor etc., influence frequency converter, the contact of drive system
Can be burnt out under the service life of device, serious conditions；And when elevator stops, if the main contacts of main contactor KM1 and envelope star contact
The envelope star contact of device KM2 acts simultaneously, or the action of the envelope star contact of envelope star contactor KM2 is ahead of main contactor KM1's
The situation of main contacts occurs, and also results in frequency converter, contactor short circuit of the moment to drive system, influences the frequency conversion of drive system
Can be burnt out under the service life of device, contactor, serious conditions, therefore the reliability of elevator work is reduced.
Therefore, it is necessary to a kind of envelope star protection device with delay protection function is provided, to overcome above-mentioned prior art
In the presence of deficiency.
Utility model content
The purpose of this utility model is to provide a kind of envelope star protection device with delay protection function.
To achieve the above object, the technical solution of the utility model is：A kind of envelope star delay protection device is provided, it is adaptable to
The elevator of main frame is driven using permanent-magnet synchronous, it includes rectification circuit, envelope star contactor and electric discharge continuous current circuit；Wherein, rectification
The AC input of circuit is electrically connected with AC power, and its DC side output end includes DC side positive terminal and direct current
Side negative terminals；The positive terminal for sealing star contactor is electrically connected with the DC side positive terminal, its negative terminal
End is electrically connected with the DC side negative terminals；Electric discharge continuous current circuit include be in parallel setting discharge circuit and after stream electricity
Road, wherein, the discharge circuit includes electric capacity, and the positive pole of the electric capacity is electrically connected at the DC side positive terminal, institute
The positive terminal of envelope star contactor is stated, the negative pole of the electric capacity is electrically connected at the DC side negative terminals, the envelope
The negative terminals of star contactor；Described one end after current circuit is electrically connected at the DC side positive terminal, the envelope
The positive terminal of star contactor, the other end after current circuit is electrically connected at DC side negative terminals, described
Seal the negative terminals of star contactor.
It is preferred that described include resistance and after stream diode after current circuit, one end of the resistance is electrically connected at described
The negative terminals of DC side negative terminals, the envelope star contactor, the other end of the resistance be electrically connected at it is described after
The positive pole of diode is flowed, the negative pole after stream diode is electrically connected at the positive terminal of the envelope star contactor, described
DC side positive terminal.
It is preferred that the envelope star contactor is D.C. contactor.
It is preferred that the rectification circuit is whole bridge rectifier circuit.
Compared with prior art, due to envelope star delay protection device of the present utility model, the positive pole of its envelope star contactor connects
Line end, negative terminals are electrically connected with DC side positive terminal, DC side negative terminals in rectification circuit；Electric discharge
Continuous current circuit include being in parallel setting discharge circuit and after current circuit, and discharge circuit includes an electric capacity, the positive pole of electric capacity, after
One end of current circuit be electrically connected at DC side positive terminal, envelope star contactor positive terminal, the negative pole of electric capacity, after
The other end of current circuit is electrically connected at the DC side negative terminals, the negative terminals of envelope star contactor.Therefore, electricity
During ladder operation, the direct current of rectification circuit output is supplied to envelope star contactor, envelope star contactor obtain it is electric after adhesive, its normally-closed contact
Disconnect, release envelope star, elevator can normally run, while for electric capacity is charged；When elevator stops, AC power is cut
Disconnected, now, because the electric energy of electric capacity does not discharge also completely, therefore the discharge loop formed by electric capacity, freewheeling circuit is carried out
Electric discharge, when electric capacity electric discharge causes its voltage less than the release voltage for sealing star contactor, envelope star contactor just discharges, envelope star contact
The normally-closed contact of device carries out envelope star to U, V, W three-phase windings of permanent-magnet synchronous driving main frame, so as to reach the purpose that star is sealed in time delay,
Avoid the envelope star when permanent-magnet synchronous drive main frame high-speed cruising and cause the situation of high current short circuit, and then avoid instantaneous short circuit
The service life of the harm that high current is caused to frequency converter, contactor of drive system etc., extension frequency converter, contactor etc.；Together
When, due to sealing the action of the actuation time later than main contactor of star contactor, it is ensured that the envelope star contact of envelope star contactor falls behind
In the main contacts of main contactor, the jerk during elevator high-speed cruising, this protection is relatively reliable.
Brief description of the drawings
Fig. 1 is the circuit diagram that the utility model seals star delay protection device.
Fig. 2 is the schematic diagram that the utility model seals star delay protection.
Specific embodiment
With reference now to Description of Drawings embodiment of the present utility model, the element numbers being similar in accompanying drawing represent similar unit
Part.
As shown in figure 1, envelope star delay protection device 1 provided by the utility model, it is adaptable to driven using permanent-magnet synchronous
The elevator of main frame.The envelope star delay protection device 1 includes rectification circuit 10, electric discharge continuous current circuit 20 and envelope star contactor KM2.Its
In, envelope star contactor KM2 is D.C. contactor；Rectification circuit 10 is whole bridge rectifier circuit, and it is used to be converted in alternating current
Direct current, to provide the working power of envelope star contactor KM2；Electric discharge continuous current circuit 20 is parallel to the two ends of envelope star contactor KM2
Between, drive main frame to provide for the permanent-magnet synchronous to elevator and postpone envelope star protection.
With continued reference to shown in Fig. 1, rectification circuit 10 includes diode D1, D2, D3, D4, and its structure and working principle is this
Known to art personnel, will not be repeated here.And the AC input of the rectification circuit 10 and AC115V AC powers
It is electrically connected with, the DC side output end of rectification circuit 10 includes DC side positive terminal and DC side negative terminals.
The positive terminal A1 of envelope star contactor KM2 is electrically connected with the DC side positive terminal of rectification circuit 10, envelope
The negative terminals A2 of star contactor KM2 is electrically connected with the DC side negative terminals of rectification circuit 10.
Referring again to shown in Fig. 1, electric discharge continuous current circuit 20 include being in parallel setting discharge circuit and after current circuit, its
In, the positive pole of discharge circuit, DC side positive terminal, the Feng Xing of rectification circuit 10 are electrically connected at after one end of current circuit
The positive terminal A1 of contactor KM2, the negative pole of the discharge circuit, is electrically connected at rectified current after the other end of current circuit
The negative terminals A2 of the DC side negative terminals on road 10, the envelope star contactor KM2.
Specifically, the discharge circuit includes an electric capacity C1, and the positive pole of the electric capacity C1 is electrically connected at rectification circuit 10
DC side positive terminal, the positive terminal A1 of envelope star contactor KM2；The negative pole of the electric capacity C1 is electrically connected at rectification
The DC side negative terminals of circuit 10, the negative terminals A2 of envelope star contactor KM2.
In addition, including resistance R1 and after diode D5 is flowed after current circuit, one end of resistance R1 is electrically connected at rectification simultaneously
The DC side negative terminals of circuit 10 and the negative terminals A2 of envelope star contactor KM2, the other end of resistance R1 electrically connect
The positive pole after stream diode D5 is connected to, the positive pole for being electrically connected at envelope star contactor KM2 simultaneously after the negative pole for flowing diode D5 connects
The DC side positive terminal of line end A1, rectification circuit 10.When elevator stops, exchange AC115V power supplys are cut off, electric capacity C1
Discharged with discharge loop is formed after current circuit, while envelope star contactor KM2 is returned in electric capacity C1 electric discharges to continue to power, so that real
Now U, V, W three-phase windings of main frame are driven to enter the purpose that line delay seals star to permanent-magnet synchronous, and delay time is determined by R1, C1,
Therefore can specifically chosen R1, C1 according to actual needs numerical value.
With reference to shown in Fig. 1-2, operation principle and process to envelope star delay protection device 1 of the present utility model are carried out
Explanation.
When normal elevator is run, the main contacts closure of main contactor KM1, apparatus for controlling elevator provides the exchange of AC115V
Power supply, by after rectification circuit 10, being rectified into direct current, the direct current provides power to D.C. contactor to the alternating current
KM2, D.C. contactor KM2 obtain it is electric after adhesive, the normally-closed contact 21,22 and 31,32 of D.C. contactor KM2 disconnects, and releases envelope star,
Elevator is set normally to run, while for electric capacity C1 is charged.
When elevator stops, AC115V AC powers are cut off, now, because the electric energy of electric capacity C1 does not discharge also completely,
Therefore put by the positive pole formation of the negative pole of electric capacity C1, resistance R1, the positive pole of diode D5, the negative pole of diode D5, electric capacity C1
Electrical circuit, makes electric capacity C1 be discharged, meanwhile, electric capacity C1 electric discharges also continue to carry out D.C. contactor KM2 the confession of certain hour
Electricity, because the electric discharge of electric capacity C1 is a time delay process for negative exponent, therefore when electric capacity C1 electric discharges cause its voltage to be less than direct current
During the release voltage of contactor KM2, D.C. contactor KM2 release, now the normally-closed contact 21,22 and 31 of D.C. contactor KM2,
32 closures, U, V, W three-phase windings for driving main frame to permanent-magnet synchronous carry out short circuit, so as to reach the purpose that star is sealed in time delay, wherein,
Delay time is determined by resistance R1, electric capacity C1.
In addition, after electric capacity C1 discharge offs, the freewheeling circuit that resistance R1, diode D5 are formed also with D.C. contactor
The coil of KM2 forms loop, and the releasing winding portion of electrical current of D.C. contactor KM2 is back to resistance R1, diode D5 and is constituted
Freewheeling circuit in.
Additionally, when permanent-magnet synchronous drive main frame to be changed into electrical power generators, traction, brake force due to elevator device
Deng the influence of other torques, the speed of main frame can be gradually reduced, time delay envelope star protection, it is to avoid drive main frame high in permanent-magnet synchronous
Star is sealed during speed operation and cause the situation of high current short circuit；And, after elevator operation when stopping, due to by electric capacity C1, resistance R1,
The discharge lag of the electric discharge continuous current circuit 20 that sustained diode 5 is formed, is later than the actuation time of D.C. contactor KM2
Main contactor KM1, it is ensured that the envelope star contact of D.C. contactor KM2 lags behind the main contacts of main contactor KM1, for elevator at a high speed
Jerk in running, this protection is relatively reliable.
To sum up, due to envelope star delay protection device 1 of the present utility model, the positive terminal A1 of its envelope star contactor KM2,
Negative terminals A2 is electrically connected with DC side positive terminal, DC side negative terminals in rectification circuit 10；Electric discharge
Continuous current circuit 20 include being in parallel setting discharge circuit and after current circuit, and discharge circuit includes an electric capacity C1, electric capacity C1's
Positive pole, the positive terminal A1 that DC side positive terminal, envelope star contactor KM2 are electrically connected at after one end of current circuit,
The negative pole of electric capacity C1, it is electrically connected at the DC side negative terminals, envelope star contactor KM2 after the other end of current circuit
Negative terminals A2.Therefore, when elevator runs, the direct current of the output of rectification circuit 10 is supplied to envelope star contactor KM2, Feng Xingjie
Tentaculum KM2 obtain it is electric after adhesive, its normally-closed contact disconnect, release envelope star, elevator can normally run, while for electric capacity C1 is filled
Electricity；When elevator stops, AC power is cut off, now, because the electric energy of electric capacity C1 does not discharge also completely, therefore by electric capacity
The discharge loop that C1, freewheeling circuit are formed is discharged, and electric capacity C1 electric discharges continue as D.C. contactor KM2 and power one regularly
Between, when electric capacity C1 electric discharges cause release voltage of its voltage less than envelope star contactor KM2, envelope star contactor KM2 just discharges, and seals
The normally-closed contact of star contactor KM2 carries out envelope star to U, V, W three-phase windings of permanent-magnet synchronous driving main frame, so as to reach time delay envelope
The purpose of star, it is to avoid the envelope star when permanent-magnet synchronous drive main frame high-speed cruising and cause the situation of high current short circuit, and then keep away
Exempt from making for the harm that instantaneous short circuit high current is caused to frequency converter, contactor of drive system etc., extension frequency converter, contactor etc.
Use the life-span；Simultaneously as the action of the actuation time later than main contactor KM1 of envelope star contactor KM2, it is ensured that envelope star contactor
The envelope star contact of KM2 lags behind the main contacts of main contactor KM1, further avoid the big circuit of instantaneous short circuit to drive system
The harm of frequency converter, contactor, and the jerk during elevator high-speed cruising, this protection are relatively reliable.
Above disclosed is only preferred embodiment of the present utility model, can not limit this practicality with this certainly new
The interest field of type, therefore the equivalent variations made according to present utility model application the scope of the claims, still belong to the utility model and are covered
Scope.
Claims (4)
1. it is a kind of to seal star delay protection device, it is adaptable to the elevator of main frame is driven using permanent-magnet synchronous, it is characterised in that including：
Rectification circuit, its AC input is electrically connected with AC power, and its DC side output end connects including DC side positive pole
Line end and DC side negative terminals；
Envelope star contactor, its positive terminal is electrically connected with the DC side positive terminal, its negative terminals with it is described
DC side negative terminals are electrically connected with；
Electric discharge continuous current circuit, the discharge circuit of its setting that includes being in parallel and after current circuit, wherein, the discharge circuit includes electricity
Hold, the positive pole of the electric capacity is electrically connected at the DC side positive terminal, the positive terminal of the envelope star contactor, institute
The negative pole for stating electric capacity is electrically connected at the DC side negative terminals, the negative terminals of the envelope star contactor；It is described after
One end of current circuit is electrically connected at the DC side positive terminal, the positive terminal of the envelope star contactor, it is described after
The other end of current circuit is electrically connected at the DC side negative terminals, the negative terminals of the envelope star contactor.
2. it is as claimed in claim 1 to seal star delay protection device, it is characterised in that described to include resistance and after stream after current circuit
Diode, one end of the resistance is electrically connected at the DC side negative terminals, the negative terminal of the envelope star contactor
End, the other end of the resistance is electrically connected at the positive pole after stream diode, and the negative pole after stream diode electrically connects
It is connected to the positive terminal of the envelope star contactor, the DC side positive terminal.
3. it is as claimed in claim 1 to seal star delay protection device, it is characterised in that the envelope star contactor is that direct current is contacted
Device.
4. it is as claimed in claim 1 to seal star delay protection device, it is characterised in that the rectification circuit is full-bridge type rectified current
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621254402.5U CN206203613U (en) | 2016-11-16 | 2016-11-16 | Envelope star delay protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621254402.5U CN206203613U (en) | 2016-11-16 | 2016-11-16 | Envelope star delay protection device |
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| Publication Number | Publication Date |
|---|---|
| CN206203613U true CN206203613U (en) | 2017-05-31 |
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ID=58749198
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621254402.5U Active CN206203613U (en) | 2016-11-16 | 2016-11-16 | Envelope star delay protection device |
Country Status (1)
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| CN (1) | CN206203613U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107986145A (en) * | 2017-12-29 | 2018-05-04 | 苏州江南嘉捷机电技术研究院有限公司 | A kind of elevator door motor controller seals star device |
| CN110255322A (en) * | 2019-07-04 | 2019-09-20 | 快意电梯股份有限公司 | Elevator seals star system |
| CN115231404A (en) * | 2022-06-23 | 2022-10-25 | 日立电梯（中国）有限公司 | Star-closing loop detection method and device, elevator control system and storage medium |
-
2016
- 2016-11-16 CN CN201621254402.5U patent/CN206203613U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107986145A (en) * | 2017-12-29 | 2018-05-04 | 苏州江南嘉捷机电技术研究院有限公司 | A kind of elevator door motor controller seals star device |
| CN110255322A (en) * | 2019-07-04 | 2019-09-20 | 快意电梯股份有限公司 | Elevator seals star system |
| CN110255322B (en) * | 2019-07-04 | 2024-05-14 | 快意电梯股份有限公司 | Elevator star sealing system |
| CN115231404A (en) * | 2022-06-23 | 2022-10-25 | 日立电梯（中国）有限公司 | Star-closing loop detection method and device, elevator control system and storage medium |
| CN115231404B (en) * | 2022-06-23 | 2024-04-05 | 日立电梯（中国）有限公司 | Star-sealing loop detection method and device, elevator control system and storage medium |
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