CN112938671A - Elevator control detection circuit with controllable discharging loop and elevator emergency rescue system - Google Patents
Elevator control detection circuit with controllable discharging loop and elevator emergency rescue system Download PDFInfo
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- CN112938671A CN112938671A CN202110375032.XA CN202110375032A CN112938671A CN 112938671 A CN112938671 A CN 112938671A CN 202110375032 A CN202110375032 A CN 202110375032A CN 112938671 A CN112938671 A CN 112938671A
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- Prior art keywords
- contactor
- power supply
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- power
- circuit
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
- B66B1/40—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings
- B66B1/42—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings separate from the main drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0043—Devices enhancing safety during maintenance
- B66B5/005—Safety of maintenance personnel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/028—Safety devices separate from control system in case of power failure, for hydraulical lifts, e.g. braking the hydraulic jack
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
Abstract
The invention discloses an elevator control detection circuit with a controllable discharge circuit, which comprises a main circuit breaker, an auxiliary circuit breaker, a contactor control panel, a power supply relay panel, a contactor combination, a storage battery and a discharge circuit, wherein the contactor combination comprises a contactor type relay, a first contactor and a second contactor, wherein: the main circuit breaker is used for controlling the connection and disconnection of the external network power supply to the motor power supply loop; the auxiliary circuit breaker and the main circuit breaker act synchronously; the contactor control board controls the on-off of the contactor combination; the power supply relay board outputs direct current to supply power for the contactor control board; the contactor type relay and the first contactor are used for controlling charging and discharging of the storage battery; the discharge circuit comprises a resistor combination and a second contactor.
Description
Technical Field
The invention relates to the field of elevator control, in particular to an elevator control detection circuit with a controllable discharge circuit and an elevator emergency rescue system.
Background
With the continuous advance of urbanization, more buildings are continuously extended in the vertical direction, and the use amount of elevators is continuously increased. Although elevators provide great convenience for the vertical transportation of people in buildings, measures are also taken to avoid passengers getting trapped in the elevator in the event of a power outage.
The elevator provided with the power-off automatic leveling device is automatically switched when a power supply system fails, the device controls the elevator to run, sufficient electric energy is provided to run the elevator to a leveling position, and passengers are guaranteed to safely leave the elevator. At present, most of the automatic leveling devices in power failure adopt a control strategy that after power failure, the power is switched to a storage battery to supply power to an elevator system. However, because of the situation of artificial power failure due to maintenance, generally, a discharge resistor is connected in parallel to the main loop capacitor to ensure that the capacitor voltage is rapidly reduced to within the human body safety voltage during maintenance. Meanwhile, due to uncontrollable discharge of the main loop, under any condition, the capacitor of the main loop quickly releases the stored electric quantity through the discharge resistor after power failure, so that the storage battery is required to provide more energy when the automatic leveling device is in operation after power failure. On the other hand, when the elevator system is powered by switching to a storage battery, the capacitor voltage is low, the impact current generated by voltage drop is large, the impact current needs to be limited by a current-limiting resistor, so that energy waste is further caused, and the impact current can also have negative effects on the service life of circuit components.
Disclosure of Invention
The invention aims to solve the technical problem of providing an elevator control detection circuit and an elevator emergency rescue system, which can quickly discharge when the power is cut off artificially, so that the voltage of a capacitor is quickly reduced to be within the safety voltage of a human body; meanwhile, when the elevator starts to be powered off in an automatic leveling mode when non-artificial power failure or input power supply is out of phase, the voltage of the main capacitor is still higher than that of the storage battery, so that impact current is avoided, the charging process is omitted, the energy of the battery can be saved, passengers can be timely delivered to the leveling position and safely leave the elevator car.
In order to solve the technical problem, the invention discloses an elevator control detection circuit, which comprises a main circuit breaker, an auxiliary circuit breaker, a contactor control panel, a power relay panel, a contactor combination, a storage battery and a discharge circuit, wherein the contactor combination comprises a contactor type relay, a first contactor and a second contactor, wherein: the main circuit breaker is used for controlling the connection and disconnection of the external network power supply to the motor power supply loop; the auxiliary circuit breaker and the main circuit breaker act synchronously; the contactor control board controls the on-off of the contactor combination; the power supply relay board outputs direct current to supply power for the contactor control board; the contactor type relay and the first contactor are used for controlling charging and discharging of the storage battery; the discharge circuit comprises a resistor combination and a second contactor.
Preferably, the contactor type relay and the first contactor are normally open contacts, and the second contactor is normally closed contacts; when the external network power supply is in a normal power supply state, the relay control panel controls the contactor type relay to be closed and controls the first contactor and the second contactor to be disconnected; when the power is artificially off, the contactor control board is powered off, and the contactor type relay, the first contactor and the second contactor are in an initial state, namely the contactor type relay and the first contactor are disconnected, and the second contactor is closed; when the power is not artificially switched off or the input power supply is in a phase failure state, the contactor control board controls the contactor type relay and the first contactor to be closed, and the second contactor is switched off.
Preferably, the power supply relay board inputs alternating current of 380V in a normal working state, outputs direct current of 48V to supply power for the contactor control board, and outputs direct current of 54-56.4V to charge a 48V storage battery; in the artificial power-off state, no power supply is input; in a non-artificial power-off state or an input power supply phase-lack state, the storage battery supplies power, and the output direct current 48V supplies power for the contactor control panel.
Preferably, the contactor type relay is connected between a power supply relay board and a 48V storage battery; the contactor type relay is of a normally open contact type, is controlled by a contactor control panel and is closed in a normal operation state and a non-artificial power-off state or an input power supply phase-loss state.
Preferably, the first contactor is connected between the main loop of the elevator system and a 48V storage battery; the first contactor is a normally open contact and is controlled by a contactor control board, the first contactor is disconnected in a normal running state, and the first contactor is closed in a non-artificial power-off state or an input power supply phase-loss state.
Preferably, the resistor combination comprises a balancing resistor and a discharge resistor.
Preferably, the discharge resistor in the discharge loop is connected in series with the second contactor and is connected in parallel with the balance resistor into two ends of the main capacitor; the second contactor contact keeps disconnected in a normal operation state and in an unattended power-off state or when an input power supply is in a phase failure state, and is closed in an unattended power-off state.
Preferably, the resistor combination is a plurality of balanced resistors connected in series.
Preferably, the discharge circuit further comprises a light emitting diode connected in parallel across the at least two balancing resistors.
An elevator emergency rescue system comprises an emergency rescue device, and an elevator control detection circuit is used for controlling the operation and stop of the emergency rescue device.
Drawings
Fig. 1 is a schematic diagram of an elevator control detection circuit with controllable discharge circuits of the present invention.
Fig. 2 is a schematic diagram of an embodiment of a discharging loop in an elevator control detection circuit with controllable discharging loop of the invention.
Fig. 3 is a schematic diagram of another embodiment of a discharging loop in an elevator control detecting circuit with a controllable discharging loop of the invention.
Description of the reference numerals
10 main breaker 20 auxiliary breaker
21 contactor control panel 22 power supply relay board
23 contactor type relay 24 first contactor
261 balance resistor 262 discharge resistor
263 second contactor
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, the electric vehicle includes a main breaker 10, an auxiliary breaker 20, a contactor control board 21, a power relay board 22, a contactor relay 23, a first contactor 24, a 48V battery 25, an inverter 11, a motor 12, and a discharge circuit 26.
The main breaker 10 is arranged between an external network power supply and an incoming line terminal of the frequency converter, and controls the on-off of the external network power supply to a power supply loop of the motor.
The auxiliary circuit breaker 20 is disposed between the power relay board 22 and the contactor control board 21, and controls the power supply circuit of the power relay board to the contactor control board to be turned on or off. The switching operation of the auxiliary breaker 20 is always the same as that of the main breaker 10.
The contactor control board 21 sends an open command to the second contactor 263 during normal operation, and when it is detected that the power is not artificially turned off or the input power is out of phase, a close command is sent to the contactor relay 23. And (3) sending a closing instruction to the third contactor 24 after 3 seconds, wherein the contactor control board 21 has no power supply when the power is artificially cut off, the fourth contactor 263 is automatically closed when the power is not cut off, and the discharge resistor 262 is connected to two ends of the main capacitor of the frequency converter to consume the energy stored by the capacitor.
The power relay board 22 is composed of an AC380V/DC48V inverter circuit and a 48V switching power supply which can maintain output at nearly rated power during the time from the start of a power failure to the operation of the contactor relay 23, and can realize seamless switching of control power supplies during the power failure.
The contactor relay 23 is provided between the battery 25 and the power relay board 22, and controls the on/off of the power supply circuit of the battery 25 to the contactor control board 21.
The first contactor 24 is provided between the battery 25 and the inverter 11, and controls on/off of the battery 25 to the motor power supply circuit.
The storage battery 25 is formed by connecting 4 sections of 7.2Ah/12V lead-acid storage batteries in series, outputs 48V direct-current voltage and provides electric energy for the elevator running under an emergency rescue model.
The discharging circuit 26 is used for controllably discharging the main capacitor of the frequency converter, is connected in parallel to the direct current side of the frequency converter 11, and is internally provided with a balance resistor 261, a discharging resistor 262 and a second contactor 263. The balancing resistor 261 is formed by serially connecting a large-resistance resistor, the discharging resistor 262 is a small-resistance resistor, the second contactor 263 is a normally closed contactor, and the discharging resistor and the second contactor are serially connected and then are connected to two ends of the balancing resistor in parallel.
In normal operation, the power relay board 22 is powered by the external network power source, outputs direct current 48V to power the contactor control board 21, and the contactor control board 21 outputs an open command to the second contactor 263 to keep the second contactor 263 open. When a power failure occurs, if the auxiliary breaker 20 is not opened, the power failure is not artificially generated or the input power is out of phase, and the contactor control board 21 issues a closing command to the contactor relay 23. After 3s, the contactor control board 21 issues a closing command to the first contactor 24, and the emergency rescue apparatus is put into operation. When the maintenance is carried out by artificial power failure, the auxiliary circuit breaker 20 is disconnected along with the main circuit breaker 10, the second contactor 263 is closed, and the main capacitor of the frequency converter 11 releases electric energy rapidly through the discharging resistor 262, so that the voltage is reduced to the range within the human safety voltage in a short time, and the personal safety of the maintenance personnel is ensured.
Example two:
the circuit of the present embodiment is different from the first embodiment in that there is no discharge resistor (262) in the discharge loop 26, the balancing resistor 261 is formed by a plurality of resistors connected in series, and the light emitting diode 264 is connected in parallel across the resistors 261.1 and 261.2, see fig. 3.
The working principle of the circuit in the normal working state is the same as that in the first embodiment, and the working principle of the circuit in the non-artificial power-off state or the input power supply phase-failure state is the same as that in the first embodiment.
The present invention has been described in detail with reference to the specific embodiments and examples, but these are not intended to limit the present invention. Many variations and modifications may be made by one of ordinary skill in the art without departing from the principles of the present invention, which should also be considered as within the scope of the present invention.
Claims (10)
1. The utility model provides a controllable elevator control detection circuitry in return circuit discharges, its characterized in that, includes main circuit breaker, auxiliary circuit breaker, contactor control panel, power relay board, contactor combination, battery and the return circuit that discharges, the contactor combination includes contactor formula relay, first contactor and second contactor, wherein:
the main circuit breaker is used for controlling the connection and disconnection of the external network power supply to the motor power supply loop;
the auxiliary circuit breaker and the main circuit breaker act synchronously;
the contactor control board controls the on-off of the contactor combination;
the power supply relay board outputs direct current to supply power for the contactor control board;
the contactor type relay and the first contactor are used for controlling charging and discharging of the storage battery;
the discharge circuit comprises a resistor combination and a second contactor.
2. The elevator control detection circuit with controllable discharge loop of claim 1, wherein:
the contactor type relay and the first contactor are normally open contacts, and the second contactor is normally closed contacts;
when the external network power supply is in a normal power supply state, the relay control panel controls the contactor type relay to be closed and controls the first contactor and the second contactor to be disconnected;
when the power is artificially off, the contactor control board is powered off, and the contactor type relay, the first contactor and the second contactor are in an initial state, namely the contactor type relay and the first contactor are disconnected, and the second contactor is closed;
when the power is not artificially switched off or the input power supply is in a phase failure state, the contactor control board controls the contactor type relay and the first contactor to be closed, and the second contactor is switched off.
3. The elevator control detection circuit with the controllable discharge circuit of claim 1, wherein the power supply relay board inputs 380V alternating current in a normal working state, outputs 48V direct current to supply power for the contactor control board, and outputs 54-56.4V direct current to charge a 48V storage battery; in the artificial power-off state, no power supply is input; in a non-artificial power-off state or an input power supply phase-lack state, the storage battery supplies power, and the output direct current 48V supplies power for the contactor control panel.
4. The elevator control detection circuit with controllable discharge circuit of claim 1, wherein the contactor type relay is connected between a power supply relay board and a 48V storage battery; the contactor type relay is of a normally open contact type, is controlled by a contactor control panel and is closed in a normal operation state and a non-artificial power-off state or an input power supply phase-loss state.
5. The elevator control detection circuit with controllable discharge circuit of claim 1, wherein the first contactor is connected between the elevator system main circuit and the 48V battery; the first contactor is a normally open contact and is controlled by a contactor control board, the first contactor is disconnected in a normal running state, and the first contactor is closed in a non-artificial power-off state or an input power supply phase-loss state.
6. The elevator control detection circuit with controllable discharge loop of claim 1, wherein the combination of resistors comprises a balancing resistor and a discharge resistor.
7. The elevator control detection circuit with controllable discharge circuit of claim 6, characterized in that the discharge resistor in the discharge circuit is connected in series with the second contactor and in parallel with the balance resistor into two ends of the main capacitor; the second contactor contact keeps disconnected in a normal operation state and in an unattended power-off state or when an input power supply is in a phase failure state, and is closed in an unattended power-off state.
8. The elevator control detection circuit with controllable discharge circuit of claim 1, wherein the resistor combination is a plurality of balancing resistors connected in series.
9. The elevator control detection circuit with controllable discharge circuit of claim 8, wherein said discharge circuit further comprises a light emitting diode connected in parallel across at least two balancing resistors.
10. An elevator emergency rescue system using an elevator control detection circuit with a controllable discharge circuit according to one of claims 1 to 8, characterized by comprising an emergency rescue device, the elevator control detection circuit being used to control the operation and stop of the emergency rescue device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110375032.XA CN112938671A (en) | 2021-04-08 | 2021-04-08 | Elevator control detection circuit with controllable discharging loop and elevator emergency rescue system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110375032.XA CN112938671A (en) | 2021-04-08 | 2021-04-08 | Elevator control detection circuit with controllable discharging loop and elevator emergency rescue system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112938671A true CN112938671A (en) | 2021-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110375032.XA Withdrawn CN112938671A (en) | 2021-04-08 | 2021-04-08 | Elevator control detection circuit with controllable discharging loop and elevator emergency rescue system |
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| Country | Link |
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| CN (1) | CN112938671A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10245173A (en) * | 1997-03-07 | 1998-09-14 | Toshiba Corp | Floor landing device of elevator |
| CN1688344A (en) * | 2002-10-11 | 2005-10-26 | 巴克斯特国际公司 | Apparatus, systems and methods for processing and treating a biological fluid with light |
| CN102192356A (en) * | 2010-03-05 | 2011-09-21 | 株式会社山武 | Power module in power failure |
| CN203614322U (en) * | 2013-11-06 | 2014-05-28 | 北京天诚同创电气有限公司 | Variable-pitch control system in wind power generator unit and wind power generator unit |
| CN109950968A (en) * | 2019-03-15 | 2019-06-28 | 深圳市海浦蒙特科技有限公司 | Elevator emergency power supply unit |
-
2021
- 2021-04-08 CN CN202110375032.XA patent/CN112938671A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10245173A (en) * | 1997-03-07 | 1998-09-14 | Toshiba Corp | Floor landing device of elevator |
| CN1688344A (en) * | 2002-10-11 | 2005-10-26 | 巴克斯特国际公司 | Apparatus, systems and methods for processing and treating a biological fluid with light |
| CN102192356A (en) * | 2010-03-05 | 2011-09-21 | 株式会社山武 | Power module in power failure |
| CN203614322U (en) * | 2013-11-06 | 2014-05-28 | 北京天诚同创电气有限公司 | Variable-pitch control system in wind power generator unit and wind power generator unit |
| CN109950968A (en) * | 2019-03-15 | 2019-06-28 | 深圳市海浦蒙特科技有限公司 | Elevator emergency power supply unit |
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Application publication date: 20210611 |
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| WW01 | Invention patent application withdrawn after publication |