CN115149560A - Energy-saving automatic rescue system for elevator with power failure - Google Patents
Energy-saving automatic rescue system for elevator with power failure Download PDFInfo
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- CN115149560A CN115149560A CN202211062685.3A CN202211062685A CN115149560A CN 115149560 A CN115149560 A CN 115149560A CN 202211062685 A CN202211062685 A CN 202211062685A CN 115149560 A CN115149560 A CN 115149560A
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- 238000000819 phase cycle Methods 0.000 claims description 11
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 238000004134 energy conservation Methods 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 5
- 101150047356 dec-1 gene Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
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- 230000007774 longterm Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
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- 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
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- 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
- B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
The invention provides an energy-saving and power-failure automatic rescue system for an elevator, wherein a main control board of the energy-saving and power-failure automatic rescue system for the elevator is respectively connected with a charge-discharge unit and an emergency power supply unit, and controls the conduction of a power supply loop of the emergency power supply unit when external power supply is abnormal; one end of the emergency power supply unit is connected with the energy storage battery, the other end of the emergency power supply unit is connected with the elevator driving unit, and when a power supply loop is conducted, electric energy of the energy storage battery is transmitted to the elevator driving unit; one end of the charging and discharging unit is connected with the energy storage battery, the other end of the charging and discharging unit is connected with the elevator driving unit, electric energy of the energy storage battery is transmitted to the elevator driving unit when the elevator driving unit consumes electricity, and generated electric energy is transmitted to the energy storage battery when the elevator driving unit generates electricity. The elevator energy-saving system can store electric energy generated by the elevator and supply energy to the elevator by using the electric energy, reduces electric energy waste, improves the energy-saving effect of the elevator, can realize emergency power supply to the elevator through the energy storage battery, and improves the safety of the elevator in working.
Description
Technical Field
The invention relates to the field of elevator energy conservation, in particular to an automatic rescue system for elevator energy conservation and power failure.
Background
Most elevators in the market are traction type elevators, a counterweight system is designed, the weight of a car is 40% -50% of the weight of a counterweight, so that when the elevator is in light load ascending, the counterweight can pull the car to ascend, a traction machine does not need to provide power but provides resistance, and the heavy load descending is the same; when the elevator is in a heavy load ascending, the car side is heavier than the heavy load, the traction machine needs to provide power to pull the car to ascend, and the elevator is in a light load descending similar mode.
The tractor is similar to a motor in principle, can be operated as a motor and a generator, provides power when being operated as the motor and provides resistance when being operated as the generator.
The traction machine is driven by the frequency converter, when the traction machine operates in an electric state, the voltage of a direct-current bus of the frequency converter is lower than that in a standby state, and at the moment, the frequency converter can obtain electricity from commercial power through a rectifier bridge pile and supply the electricity to the traction machine after inversion; when the tractor operates in a power generation state, the bus voltage of the frequency converter can be increased, and after the bus voltage is increased to a certain degree, the brake resistor is connected to consume generated energy in a heat form, so that the waste of electric energy is caused.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an automatic rescue system for an elevator with energy conservation and power failure, wherein an energy storage battery is arranged in the automatic rescue system for the elevator with energy conservation and power failure and is respectively connected with an emergency power supply unit and a charging and discharging unit, electric energy transmission between a motor driving unit and the energy storage battery is realized through the charging and discharging unit, the storage of electric energy when the elevator generates electricity and the transmission of electric energy when the elevator consumes electricity are realized through the energy storage battery, the energy-saving effect of the elevator is improved, the waste of electric energy is reduced, and when the external power supply is abnormal, the electric energy of the energy storage battery is transmitted to the motor driving unit through the emergency power supply unit so as to enable the motor driving unit to work, so that the safety of the elevator is improved.
In order to solve the above problems, the present invention adopts a technical solution as follows: the utility model provides an energy-conserving automatic rescue system that has a power failure that adds of elevator, the energy-conserving automatic rescue system that has a power failure that adds of elevator includes: the emergency power supply system comprises a charging and discharging unit, an emergency power supply unit, an energy storage battery and a main control board; the main control board is respectively connected with the charging and discharging unit and the emergency power supply unit and controls the power supply loop of the emergency power supply unit to be conducted when the external power supply is abnormal; one end of the emergency power supply unit is connected with the energy storage battery, the other end of the emergency power supply unit is connected with an elevator driving unit of an elevator, and when the power supply loop is conducted, electric energy of the energy storage battery is transmitted to the elevator driving unit so that the elevator driving unit can perform emergency evacuation; one end of the charge and discharge unit is connected with the energy storage battery, the other end of the charge and discharge unit is connected with the elevator driving unit, when the elevator driving unit consumes electricity, the electric energy of the energy storage battery is transmitted to the elevator driving unit, and when the elevator driving unit generates electricity, the electric energy generated by the elevator driving unit is transmitted to the energy storage battery.
Furthermore, the elevator driving unit comprises a tractor, a frequency converter and a wiring terminal, the wiring terminal is connected with the tractor through the frequency converter, the emergency power supply unit is connected with the wiring terminal, and the charging and discharging unit is connected with the frequency converter.
Furthermore, the elevator energy-saving power-on and power-off automatic rescue system further comprises an external power supply management unit, one end of the external power supply management unit is connected with a mains supply, and the other end of the external power supply management unit is connected with the wiring terminal and used for supplying power to the elevator driving unit.
Furthermore, the external power supply management unit comprises a phase sequence relay and a first contactor, the first contactor is arranged in a power supply loop of the external power supply and connected with the main control board, and the phase sequence relay is connected with the input end of the first contactor and the main control board.
Furthermore, the elevator energy-saving power-on and power-off automatic rescue system further comprises an onboard battery, wherein the onboard battery is connected with the voltage input end of the main control panel and the external power supply management unit, and electric energy is obtained through the external power supply management unit.
Further, the main control board further comprises an indication module, the indication module is connected with the main control board, and the main control board indicates the working state of the automatic rescue system for energy conservation and power failure of the elevator through the indication module.
Furthermore, the emergency power supply unit further comprises a second contactor and an inverter, one end of the second contactor is connected with the elevator driving unit, the other end of the second contactor is connected with the alternating current output end of the inverter, the main control board is connected with the control end of the second contactor, and the direct current input end of the inverter is connected with the energy storage battery.
Furthermore, the inverter inverts the electric energy of the energy storage battery into 220v alternating current, and the zero line and the live line corresponding to the alternating current are divided into two parts through the second contactor so as to supply power to the motor driving unit and a safety loop and a control loop of the elevator to realize emergency evacuation.
Furthermore, the charging and discharging unit comprises a bidirectional DC-DC module, two ends of the bidirectional DC-DC module are respectively connected with the elevator driving unit and the energy storage battery, and a control end is connected with the main control board.
Furthermore, the elevator energy-saving and power failure automatic rescue system further comprises an emergency stop device, the two ends of the bidirectional DC-DC module, the input end of the emergency power supply unit and the main control board are connected with a group of linkage switches of the emergency stop device, and the emergency power supply unit is controlled to be connected with and disconnected from the energy storage battery through the emergency stop device.
Compared with the prior art, the invention has the beneficial effects that: set up the energy storage battery in the energy-conserving automatic rescue system that has a power failure that adds of elevator, and with the energy storage battery respectively with urgent power supply unit, charge and discharge unit connection, realize the motor drive unit through charge and discharge unit, the electric energy transmission between the energy storage battery, the transportation of the electric energy when utilizing the energy storage battery to realize the elevator electricity generation storage of electric energy and power consumptive time electric energy, the energy-conserving effect of elevator has been promoted, the electric energy waste has been reduced, and when the power supply is unusual outside, utilize urgent power supply unit to transmit the electric energy of energy storage battery for the motor drive unit so that the motor drive unit work, the security of elevator work has been improved.
Drawings
Fig. 1 is a structural diagram of an energy-saving power-on/off automatic rescue system for an elevator in an embodiment of the invention;
fig. 2 is a schematic connection diagram of an elevator energy-saving and power failure automatic rescue system in an embodiment of the invention.
Detailed Description
The following embodiments of the present application are described by specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure of the present application. The application is capable of other and different embodiments and its several details are capable of modifications and various changes in detail without departing from the spirit of the application. It should be noted that the various embodiments of the present disclosure, described and illustrated in the figures herein generally, may be combined with each other without conflict, and that the structural components or functional modules therein may be arranged and designed in a variety of different configurations. Thus, the following detailed description of the embodiments of the present disclosure, presented in the figures, is not intended to limit the scope of the claimed disclosure, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The terminology used in the disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1-2, fig. 1 is a structural diagram of an energy-saving power-on automatic rescue system for an elevator according to an embodiment of the present invention; fig. 2 is a schematic connection diagram of an energy-saving power-on/power-off automatic rescue system for an elevator in an embodiment of the invention. The energy-saving power-failure automatic rescue system of the elevator is described in detail with reference to the figures 1-2.
In this embodiment, the energy-conserving automatic rescue system that adds power failure that adds of elevator includes: the emergency power supply system comprises a charging and discharging unit, an emergency power supply unit, an energy storage battery and a main control board; the main control board is respectively connected with the charging and discharging unit and the emergency power supply unit and controls the conduction of a power supply loop of the emergency power supply unit when external power supply is abnormal; one end of the emergency power supply unit is connected with the energy storage battery, the other end of the emergency power supply unit is connected with the elevator driving unit of the elevator, and when the power supply loop is conducted, the electric energy of the energy storage battery is transmitted to the elevator driving unit so as to enable the elevator driving unit to work; one end of the charge and discharge unit is connected with the energy storage battery, the other end of the charge and discharge unit is connected with the elevator driving unit, the electric energy of the energy storage battery is transmitted to the elevator driving unit when the elevator driving unit consumes electricity, and the generated electric energy is transmitted to the energy storage battery when the elevator driving unit generates electricity.
In this embodiment, the energy storage battery is a super nickel battery, and in other embodiments, the energy storage battery may also be a super capacitor, a lithium battery, a lead-acid battery, or other batteries capable of performing frequent charging and discharging operations.
In this embodiment, the elevator driving unit includes a traction machine, a frequency converter, and a connection terminal, the connection terminal is connected to the traction machine through the frequency converter, the emergency power supply unit is connected to the connection terminal, and the charging and discharging unit is connected to the frequency converter.
The elevator energy-saving and power failure automatic rescue system further comprises an external power supply management unit, one end of the external power supply management unit is connected with a mains supply, the other end of the external power supply management unit is connected with a wiring terminal, the external power supply management unit is used for supplying power to the elevator driving unit, and electric energy for daily work is supplied to the elevator driving unit through the external power supply management unit.
The external power supply management unit comprises a phase sequence relay and a first contactor, the first contactor is arranged in a power supply loop of external power supply and connected with the main control board, and the phase sequence relay is connected with the input end of the first contactor and the main control board. And the phase sequence relay transmits the detected power failure and phase loss information to the main control board.
In a specific embodiment, the first contactor is a KM1 contactor, and is connected with an external power supply (commercial power) through KM1L and KM1N to obtain electric energy required for work, the KM1 contactor transmits three-phase current to a connection terminal, the KM1 contactor is connected with a main control board through a first relay1, and the main control board is further connected with an FB1 contact on the KM1 contactor. The switch Dec2 is arranged in the phase sequence relay, the KM1 contactor is used for switching on external power supply according to the instruction of the main control panel when the mains supply is normal, so that the elevator is powered by the external mains supply, and the phase sequence relay is used for detecting whether the mains supply has a phase failure or the input end of the phase sequence relay is free of power, and transmitting the detection result to the main control panel.
In one embodiment, the external power supply management unit further includes a general gate, and the general gate is connected to the input end of the first contactor and controls the external power supply management unit to be turned on or off through the general gate. The main brake is further connected with the main control board to display the on-off condition of the main brake to the main control board.
In a specific embodiment, the main brake is a main brake linked switch, the switch Dec1 is disposed in the main brake linked switch, and the main brake is connected to the main control board through the switch Dec 1. The main control board judges whether the mains supply is abnormal or the power is cut off by manually switching off through the information transmitted by the switch Dec 1.
The elevator energy-saving automatic rescue system with power failure further comprises an onboard battery, the onboard battery is connected with the voltage input end external power supply management unit of the main control board, and the onboard battery supplies power to the main control board when power failure occurs. The onboard battery is used for maintaining the operation of the main control panel under the conditions of power failure and the like, and the onboard battery is provided with a protection plate so as to protect the onboard battery and prolong the service life of the onboard battery.
In this embodiment, the main control board still includes indicating module, and indicating module is connected with the main control board, and the main control board passes through indicating module and instructs the energy-conserving automatic rescue system's of power failure that adds of elevator operating condition. Wherein, the main control board is still connected in order to prevent that the main control board from crashing with external watchdog. The indicating module can be an RGB lamp, a nixie tube, a display module and other modules capable of indicating the working state.
In a specific embodiment, the indicating module is an indicating lamp, and the indicating lamp comprises a heartbeat indicating lamp (feeding dog indicating lamp), a fault mode indicating lamp, an energy-saving mode indicating lamp, an emergency mode indicating lamp, a maintenance mode indicating lamp, an emergency stop mode indicating lamp and a power supply indicating lamp. The main control board controls the corresponding indicator lamps to emit light according to the working state of the automatic rescue system with energy conservation and power failure of the elevator.
In this embodiment, the emergency power supply unit further includes a second contactor and an inverter (DC-AC inverter), one end of the second contactor is connected to the elevator driving unit, the other end of the second contactor is connected to the AC output terminal of the inverter, the main control board is connected to the control terminal of the second contactor, and the DC input terminal of the inverter is connected to the energy storage battery. And converting the direct current of the energy storage battery into alternating current by using an alternating current inverter and outputting the alternating current to the elevator driving unit. The DC-AC inverter is used for inverting to output 220V alternating current to supply an elevator rescue system to operate (such as brake release, leveling device, safety loop operation and the like) in an emergency, wherein the DC-AC inverter is inverted into single-phase 220Vac to output, a zero line and a live line are divided into two parts, R and T are live lines and S and N are zero lines in the emergency working condition, and the frequency converter can still work at the moment. Meanwhile, the original elevator control loop is connected with R and N, and can still get electricity to work, so that the operation of an elevator main board, brake release and the like is maintained. The safety loop is connected with T and N, and can still be powered to operate, so that the operation of the elevator under the emergency working condition is ensured.
In a specific embodiment, the second contactor is a KM2 contactor, which is connected to the inverter through KM2L and KM2N to obtain electric energy required for operation, and an output terminal of the KM2 contactor is connected to a connection terminal to transmit ac power to the connection terminal. And the FB2 contact of the KM2 contactor is connected with the main control board, and the main control board controls the KM2 contactor to be closed and opened through a second relay 2. The inverter is connected with the main control board through a fourth relay4, the work of the inverter is controlled through the main control board, the short contact and the ARD contact of the KM2 contactor are normally open contacts and are used for being connected with a control loop, and the control loop is informed to be in a power failure state currently through a phase sequence relay in the closed short circuit control loop of the short contact, so that the elevator is subjected to near-flat-layer rescue.
In a preferred embodiment, normally open contacts are further arranged in the first contactor and the second contactor, wherein the first normally open contact HS1 is arranged in the first contactor and is connected in series into a coil of the second contactor, and the second normally open contact HS2 is arranged in the second contactor and is connected in series into a coil of the first contactor. The first contactor and the second contactor are interlocked through the first normally open contact HS1 and the second normally open contact HS2, and short circuit is prevented from occurring in abnormal conditions.
In this embodiment, the charging and discharging unit includes a bidirectional DC-DC module, two ends of the bidirectional DC-DC module are respectively connected with the elevator driving unit and the energy storage battery, and the control end is connected with the main control board. The bidirectional DC-DC module is used for boosting the voltage of the super nickel battery to supply power to the frequency converter bus when the tractor runs electrically, so that energy is saved, and the voltage of the frequency converter bus is reduced to the super nickel battery when the tractor runs for power generation, so that energy storage is realized.
In a specific embodiment, an enable switch EN of the bidirectional DC-DC is connected to the main control board through a third relay 3.
In this embodiment, the elevator energy-saving and power failure automatic rescue system further comprises an emergency stop device, and the two ends of the bidirectional DC-DC module and the main control board are connected with a group of linked switches of the emergency stop device.
In a specific embodiment, the emergency stop device is a ganged switch, two switches (a first switch and a second switch) of the ganged switch are arranged at two ends of the bidirectional DC-DC module, and the bidirectional DC-DC module and the inverter are electrically connected with the energy storage battery after the second switch is turned on. And a third switch of the linkage switch is arranged at the connecting end of the main control board and the onboard battery. The scram device is used for pulling down the air switch to realize the disconnection of the super nickel battery and the bidirectional DC-DC module, the disconnection of the inverter, the disconnection of the bidirectional DC-DC and the frequency converter and the disconnection of the onboard battery and the main control panel when an emergency occurs or the device is not used for a long time.
In this embodiment, the elevator further comprises a control circuit and a safety circuit, the control circuit and the safety circuit are used for protecting the elevator and managing the elevator, the control circuit and the safety circuit are connected with different phases in a three-phase circuit of the connecting terminal and the frequency converter, and the control circuit is connected with the second contactor.
The working mode of the elevator energy-saving and power failure automatic rescue system is described by the table I and the figure 2.
Watch 1
The elevator energy-saving and power failure automatic rescue system disclosed by the invention realizes the integration of energy saving and emergency. Meanwhile, the energy storage battery can resist continuous impact of large current, is not afraid of long-term stop and over-discharge damage, and is safe, non-ignitable and non-explosive. The elevator operation energy-saving rate is high, save the electric energy for the user, still can open the door through the energy supply of energy storage battery when the electric wire netting is unusual, makes the automatic flat bed of elevator open the door and puts the people, reduces the probability of stranded people. The energy storage battery has long service life which can reach more than 8 years. After one evacuation is finished, the evacuation mode cannot be entered again due to the unchanged logic of the Dec1 and the Dec2, and the evacuation can be performed next time unless the evacuation mode enters the energy-saving or maintenance mode. The capacity of the on-board battery is far larger than the power consumption for one-time evacuation, and the on-board battery is provided with the protection board, cannot be overcharged or overdischarged and can be charged by the main control board. The elevator is provided with the indicating lamp, so that a user can conveniently and clearly determine the running state of the elevator and what kind of faults are encountered. The commercial power resumes in the emergency mode process, can continue to accomplish this and withdraw. The mains supply incoming call cannot be automatically powered on in the maintenance process, and the safety is ensured. The device is reserved with a communication interface, and a touch screen and an Internet of things device can be expanded. The original ladder is not detached from the brake resistor, and the original ladder is simple in wiring and convenient to reform.
The invention has the following advantages:
(1) The elevator energy-saving and emergency two-in-one function automatically switches the emergency or energy-saving function according to the condition of the mains supply, and when the mains supply is abnormal, the main control board enters an emergency mode to automatically open the door of the elevator on a near flat floor under light load, so that people are released, and people trapping accidents are reduced; the mains supply automatically judges the state of the elevator to store energy or feed back under the energy-saving function normally; meanwhile, the system can judge maintenance and emergency stop modes and can report faults (detection faults and contactor adhesion faults).
(2) The super nickel battery used by the energy storage battery has long service life, is not afraid of long-term storage of the battery, and the water system battery is safe and does not catch fire;
(3) The energy-saving and emergency services share one group of batteries, and energy-saving energy is generated by an elevator or supplied by commercial power;
(4) The existing frequency converter elevator can be increased, the transformation is simple, the elevator can be immediately changed into more energy-saving, environment-friendly and safe after the transformation, and the economic value is generated for users.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides an elevator is energy-conserving with having a power failure automatic rescue system which characterized in that, elevator is energy-conserving to include with having a power failure automatic rescue system: the emergency power supply system comprises a charging and discharging unit, an emergency power supply unit, an energy storage battery and a main control board;
the main control board is respectively connected with the charging and discharging unit and the emergency power supply unit and controls the power supply loop of the emergency power supply unit to be conducted when the external power supply is abnormal;
one end of the emergency power supply unit is connected with the energy storage battery, the other end of the emergency power supply unit is connected with an elevator driving unit of an elevator, and when the power supply loop is conducted, electric energy of the energy storage battery is transmitted to the elevator driving unit so that the elevator driving unit can perform emergency evacuation;
one end of the charge and discharge unit is connected with the energy storage battery, the other end of the charge and discharge unit is connected with the elevator driving unit, when the elevator driving unit consumes electricity, the electric energy of the energy storage battery is transmitted to the elevator driving unit, and when the elevator driving unit generates electricity, the electric energy generated by the elevator driving unit is transmitted to the energy storage battery.
2. The elevator energy-saving and power failure automatic rescue system as claimed in claim 1, wherein the elevator driving unit comprises a traction machine, a frequency converter and a wiring terminal, the wiring terminal is connected with the traction machine through the frequency converter, the emergency power supply unit is connected with the wiring terminal, and the charging and discharging unit is connected with the frequency converter.
3. The automatic energy-saving and power-failure rescue system for the elevator as claimed in claim 2, further comprising an external power supply management unit, wherein one end of the external power supply management unit is connected with a mains supply, and the other end of the external power supply management unit is connected with the wiring terminal for supplying power to the elevator driving unit.
4. The elevator energy-saving and power failure automatic rescue system as claimed in claim 3, wherein the external power supply management unit comprises a phase sequence relay and a first contactor, the first contactor is arranged in a power supply loop of the external power supply and is connected with the main control board, and the phase sequence relay is connected with an input end of the first contactor and the main control board.
5. The automatic energy-saving and power-failure rescue system for the elevator as claimed in claim 4, further comprising an on-board battery, wherein the on-board battery is connected with the voltage input end of the main control board and the external power supply management unit, and obtains electric energy through the external power supply management unit.
6. The automatic energy-saving power-on and power-off rescue system for the elevator as claimed in claim 1, wherein the main control board further comprises an indication module, the indication module is connected with the main control board, and the main control board indicates the working state of the automatic energy-saving power-on and power-off rescue system for the elevator through the indication module.
7. The elevator energy-saving and power failure automatic rescue system as claimed in claim 6, wherein the emergency power supply unit further comprises a second contactor and an inverter, one end of the second contactor is connected with the elevator driving unit, the other end of the second contactor is connected with the alternating current output end of the inverter, the main control board is connected with the control end of the second contactor, and the direct current input end of the inverter is connected with the energy storage battery.
8. The elevator energy-saving and power-failure automatic rescue system as claimed in claim 7, wherein the inverter inverts the electric energy of the energy storage battery into 220v alternating current, and the second contactor divides the corresponding zero line and the corresponding live line of the alternating current into two parts to supply power to the motor driving unit and the safety loop and the control loop of the elevator to realize emergency evacuation.
9. The elevator energy-saving and power failure automatic rescue system as claimed in claim 7, wherein the charge-discharge unit comprises a direct current bidirectional DC-DC module, two ends of the bidirectional DC-DC module are respectively connected with the elevator driving unit and the energy storage battery, and a control end is connected with the main control board.
10. The elevator energy-saving and power-failure automatic rescue system according to claim 9, further comprising an emergency stop device, wherein two ends of the bidirectional DC-DC module, the input end of the emergency power supply unit and the main control board are connected to a set of ganged switches of the emergency stop device, and the emergency power supply unit is controlled to be connected to and disconnected from the energy storage battery through the emergency stop device.
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| TWI833491B (en) | 2022-12-07 | 2024-02-21 | 長岡機電股份有限公司 | Energy storage type elevator regenerative system |
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| CN115149560B (en) | 2023-03-10 |
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