A two-phase power failure emergency rescue system for low-power elevators and its use method

Abstract

The present invention discloses a two-phase power failure emergency rescue system for a small power elevator and a method of using the system, including a contactor KY3, a control panel, an inverter, a battery, a switch FA and a transformer; the three-phase mains electricity supplies power to the elevator through the contact of the contactor KY3, and is connected to the control panel through the coil of the contactor KY3, and then charges the ARD system, and detects through the ARD system; the control panel is connected to the battery and charges the battery; the control panel is connected to the transformer and is converted into an AC voltage used by the elevator through the transformer; the control panel is connected to the inverter, and the battery is connected to the inverter through the switch FA, and transmits electricity to the inverter, and then is converted into AC power used by the elevator through the inverter to supply the elevator for power failure emergency rescue. The input voltage of the present invention still adopts a three-phase input method, but its output voltage is changed to a two-phase output method, which is convenient, economical and reasonable, and is suitable for small power elevators.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to a two-phase power failure emergency rescue system for a low-power elevator and a use method thereof. Background Art

[0002] The power failure emergency rescue device is a device that provides power to the elevator when the normal power supply of the elevator is lost or the power supply is short-phase. It energizes the elevator power circuit, thereby running the elevator car at a low speed to the level position and opening the door to allow passengers to evacuate safely.

[0003] In order to minimize the power capacity required for power outage rescue, the general practice is to drive the elevator to run in the light load direction during a power outage. At this time, the inverter only needs very little force to drive the elevator, which significantly reduces the capacity configuration of the power outage emergency rescue device.

[0004] At present, for ordinary passenger elevators, since the elevator inverter uses three-phase power supply, the general practice is: the power outage emergency rescue device outputs three-phase power, but this leads to a more complex internal component structure of the power outage emergency rescue device, a larger volume, and a higher cost. If only two-phase power can be provided to the elevator during power outage emergency rescue, the internal component structure of the power outage emergency rescue device can be greatly simplified, and the volume and cost will be more advantageous. Therefore, the above problems need to be solved urgently. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a two-phase power failure emergency rescue system for a small power elevator and a method of using the system. The input voltage still adopts a three-phase input mode, but its output voltage is changed to a two-phase output mode, which can realize the power failure emergency rescue function of the elevator. It is convenient, economical and reasonable, and is suitable for small power elevators.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a two-phase power outage emergency rescue system for an elevator of the present invention, the innovation of which lies in: comprising a contactor KY3, a control panel, an inverter, a battery, a switch FA and a transformer; the three-phase AC power supplies power to the elevator through the contactor KY3 contacts, and is connected to the control panel through the contactor KY3 coil, thereby charging the ARD system and performing detection through the ARD system; the control panel is connected to the battery and charges the battery; the control panel is connected to the transformer and converted into an AC voltage used by the elevator through the transformer; the control panel is connected to the inverter, and the battery is connected to the inverter through the switch FA, and transmits electricity to the inverter, which is then converted into AC power used by the elevator through the inverter to supply the elevator for power outage emergency rescue.

[0007] Preferably, the three-phase mains power incoming lines L1, L2, L3 are connected to the power output terminals R, S, T respectively through the contactor KY3 contacts, thereby supplying power to the elevator.

[0008] Preferably, the control board adopts control board TDGK; terminals J1.1, J1.3, and J1.5 of control board TDGK are respectively connected to the three-phase mains power lines L1, L2, and L3 to charge the ARD system and perform detection through the ARD system; terminals J1.7 and J1.9 of control board TDGK are respectively connected to the contactor KY3 coil to form a loop to control the closing of the contactor KY3 contacts.

[0009] Preferably, terminals J3.1 and J3.3 of the control board TDGK are respectively connected to one end of the transformer, and terminals J3.5 and J3.6 of the control board TDGK are respectively connected to the other end of the transformer, and then converted into an AC voltage that can be used by the elevator through the transformer.

[0010] Preferably, terminal J-5 of the control board TDGK is connected to terminal J-5 of the inverter for inverter startup control and communication wiring.

[0011] Preferably, terminal J4.1 of control board TDGK is connected to one end of the discharge resistor, and terminal J4.2 of control board TDGK is connected to the other end of the discharge resistor; terminal J4.4 of control board TDGK is connected to the negative electrode of the battery, and the negative electrode of the battery is connected to the BAT- terminal of the inverter; terminal J4.3 of control board TDGK is connected to the BAT+ terminal of the inverter, and the positive electrode of the battery is connected to the BAT+ terminal of the inverter through switch FA; terminal J4.7 of control board TDGK is connected to the KB1 terminal of the boat-type switch, and terminal J4.8 of control board TDGK is connected to the KB2 terminal of the boat-type switch.

[0012] Preferably, the discharge resistor is 30Ω / 50W.

[0013] Preferably, the AC1 end of the inverter is connected to the power output end R, and the AC2 end of the inverter is connected to the power output end S, and the inverter converts the AC power into AC power that can be used by the elevator to supply the elevator for power outage emergency rescue.

[0014] The invention discloses a method for using a two-phase power failure emergency rescue system for an elevator, the innovation of which is that it comprises the following steps:

[0015] (1) When the mains power is normal, the contactor KY3 coil controls the contactor KY3 contact to be in a closed state, and the switch FA is in an open state; at this time, the emergency rescue system, that is, the ARD system, is in a non-working state, and the three-phase mains power can directly power the elevator and charge the battery at the same time, and the three-phase mains power can be detected through the ARD system;

[0016] (2) When the mains power is cut off, the ARD system detects this situation and triggers the start signal. The contactor KY3 is in the disconnected state and the ARD system starts to start;

[0017] (3) The ARD system then transmits the emergency leveling start signal to the elevator control system, and the elevator enters the emergency mode, closing the switch of the phase sequence short-circuit part to complete the phase sequence short-circuit;

[0018] (4) Then the switch FA is in the closed state, the battery transmits electricity to the inverter, and the inverter converts it into AC power that can be used by the elevator to supply the elevator, maintaining the elevator to the leveling position in the light load direction and starting to run;

[0019] (5) When the elevator runs to the nearest leveling position in the light load direction, the elevator control system outputs the elevator door opening signal, opens the elevator door, and allows passengers to leave the car; then the elevator door closes again until the elevator control system detects the door closing signal, confirming that the elevator hall door and car door are closed; then the elevator control system outputs the emergency rescue completion signal to the ARD system, the ARD system stops outputting, the switch FA is in the open state, the contactor KY3 contacts are in the closed state again, and the emergency rescue state is exited, waiting for the mains power to arrive;

[0020] (6) If the mains power is restored during the emergency rescue process, the ARD system will prioritize completing the rescue process. After exiting the emergency rescue state, the contactor KY3 will be closed again, the switch FA will be open, and the elevator will return to normal.

[0021] Preferably, in the above step (1), if the battery itself is low on power, the ARD system is in a charging state; if the battery is fully charged, the ARD system is in a silent state.

[0022] Beneficial effects of the present invention:

[0023] (1) The input voltage of the present invention still adopts the three-phase input mode, but its output voltage is changed to the two-phase output mode, which can realize the power failure emergency rescue function of the elevator, which is convenient, economical and reasonable, and is suitable for small power elevators;

[0024] (2) While ensuring that the elevator can safely and efficiently perform its rescue function, the present invention also greatly simplifies its internal structure, reduces its volume, makes installation more convenient and flexible, greatly reduces costs, and has more targeted applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 The present invention is a configuration structure diagram of a two-phase power failure emergency rescue system for an elevator and an elevator system.

[0027] Figure 2 It is a system logic block diagram of the present invention.

[0028] Figure 3 The present invention is an electrical schematic diagram of a two-phase power failure emergency rescue system for an elevator. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below through specific implementation methods.

[0030] The present invention discloses a two-phase power failure emergency rescue system for an elevator, comprising a contactor KY3, a control panel, an inverter, a battery, a switch FA and a transformer; Figures 1 to 3 As shown, the three-phase mains power supplies power to the elevator through the contactor KY3 contact, and is connected to the control board through the contactor KY3 coil, thereby charging the ARD system and performing detection through the ARD system; wherein, the three-phase mains power incoming lines L1, L2, and L3 are respectively connected to the power output terminals R, S, and T through the contactor KY3 contact, thereby supplying power to the elevator.

[0031] like Figures 1 to 3 As shown, the control board is connected to the battery and charges the battery; the control board is connected to the transformer and converted into an AC voltage used by the elevator through the transformer; the control board is connected to the inverter, and the battery is connected to the inverter through the switch FA, and transmits electricity to the inverter, and then converted into AC power used by the elevator through the inverter to supply the elevator for power outage emergency rescue.

[0032] The control board in the present invention adopts the control board TDGK; Figures 1 to 3As shown, terminals J1.1, J1.3, and J1.5 of the control board TDGK are respectively connected to the three-phase mains power lines L1, L2, and L3 to charge the ARD system and perform detection through the ARD system; terminals J1.7 and J1.9 of the control board TDGK are respectively connected to the contactor KY3 coil to form a loop to control the closing of the contactor KY3 contact; terminals J3.1 and J3.3 of the control board TDGK are respectively connected to one end of the transformer, and terminals J3.5 and J3.6 of the control board TDGK are respectively connected to the other end of the transformer, and then converted into an AC voltage that can be used by the elevator through the transformer.

[0033] like Figures 1 to 3 As shown, terminal J-5 of control board TDGK is connected to terminal J-5 of inverter for inverter start-up control and communication wiring; terminal J4.1 of control board TDGK is connected to one end of the discharge resistor, and terminal J4.2 of control board TDGK is connected to the other end of the discharge resistor; terminal J4.4 of control board TDGK is connected to the negative pole of the battery, and the negative pole of the battery is connected to the BAT- end of the inverter; terminal J4.3 of control board TDGK is connected to the BAT+ end of the inverter, and the positive pole of the battery is connected to the BAT+ end of the inverter through switch FA; terminal J4.7 of control board TDGK is connected to the KB1 end of the boat switch, and terminal J4.8 of control board TDGK is connected to the KB2 end of the boat switch; wherein, the discharge resistor adopts 30Ω / 50W.

[0034] like Figures 1 to 3 As shown, the AC1 end of the inverter is connected to the power output end R, and the AC2 end of the inverter is connected to the power output end S, and the inverter converts the AC power into an AC power that can be used by the elevator to supply the elevator for power outage emergency rescue.

[0035] The present invention provides a method for using a two-phase power failure emergency rescue system for an elevator, such as Figures 1 to 3 As shown, the following steps are included:

[0036] (1) When the mains power is normal, the contactor KY3 coil controls the contactor KY3 contact to be in a closed state, and the switch FA is in an open state; at this time, the emergency rescue system, that is, the ARD system, is in a non-working state, and the three-phase mains power can directly power the elevator and charge the battery at the same time, and the three-phase mains power can be detected through the ARD system;

[0037] In the above steps, if the battery itself is insufficient, the ARD system is in a charging state; if the battery is fully charged, the ARD system is in a silent state.

[0038] (2) When the mains power is cut off, the ARD system detects this situation and triggers the start signal. The contactor KY3 is in the disconnected state and the ARD system starts to start;

[0039] (3) The ARD system then transmits the emergency leveling start signal to the elevator control system, and the elevator enters the emergency mode, closing the switch of the phase sequence short-circuit part to complete the phase sequence short-circuit;

[0040] (4) Then the switch FA is in the closed state, the battery transmits electricity to the inverter, and the inverter converts it into AC power that can be used by the elevator to supply the elevator, maintaining the elevator to the leveling position in the light load direction and starting to run;

[0041] (5) When the elevator runs to the nearest leveling position in the light load direction, the elevator control system outputs the elevator door opening signal to open the elevator door and allow the passengers to leave the car; then the elevator door closes again until the elevator control system detects the door closing signal and confirms that the elevator hall door and car door are closed; then the elevator control system outputs the emergency rescue completion signal to the ARD system, the ARD system stops outputting, the switch FA is in the open state, the contactor KY3 contacts are in the closed state again, and the emergency rescue state is exited, waiting for the mains power to arrive.

[0042] (6) If the mains power is restored during the emergency rescue process, the ARD system will give priority to completing the rescue process. After exiting the emergency rescue state, the contactor KY3 will be closed again, the switch FA will be opened, and then the elevator will return to normal. The entire process will not conflict with the restored mains power.

[0043] Beneficial effects of the present invention:

[0044] (1) The input voltage of the present invention still adopts the three-phase input mode, but its output voltage is changed to the two-phase output mode, which can realize the power failure emergency rescue function of the elevator, which is convenient, economical and reasonable, and is suitable for small power elevators;

[0045] (2) While ensuring that the elevator can safely and efficiently perform its rescue function, the present invention also greatly simplifies its internal structure, reduces its volume, makes installation more convenient and flexible, greatly reduces costs, and has more targeted applicability.

[0046] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. A two-phase power failure emergency rescue system for elevators, characterized by: It includes contactor KY3, control board, inverter, battery, switch FA and transformer; three-phase AC power supplies power to the elevator through contactor KY3 contacts, and is connected to the control board through contactor KY3 coil, thereby charging the ARD system and performing detection through the ARD system; the control board is connected to the battery and charges the battery; the control board is connected to the transformer and is converted into an AC voltage used by the elevator through the transformer; the control board is connected to the inverter, and the battery is connected to the inverter through switch FA, and transmits electricity to the inverter, which is then converted into AC power used by the elevator through the inverter to supply the elevator for power outage emergency rescue.

2. The two-phase power failure emergency rescue system for elevators according to claim 1, characterized in that: The three-phase mains power incoming lines L1, L2, and L3 are respectively connected to the power output terminals R, S, and T through the contactor KY3 contacts, thereby supplying power to the elevator.

3. A two-phase power failure emergency rescue system for elevators according to claim 2, characterized in that: The control board adopts control board TDGK; terminals J1.1, J1.3, and J1.5 of control board TDGK are respectively connected to the three-phase mains power lines L1, L2, and L3 to charge the ARD system and perform detection through the ARD system; terminals J1.7 and J1.9 of control board TDGK are respectively connected to the contactor KY3 coil to form a loop to control the closing of the contactor KY3 contact.

4. The two-phase power failure emergency rescue system for elevator according to claim 3 is characterized in that: Terminals J3.1 and J3.3 of the control board TDGK are respectively connected to one end of the transformer, and terminals J3.5 and J3.6 of the control board TDGK are respectively connected to the other end of the transformer, and then converted into an AC voltage that can be used by the elevator through the transformer.

5. The two-phase power failure emergency rescue system for elevators according to claim 3 is characterized in that: Terminal J-5 of the control board TDGK is connected to terminal J-5 of the inverter for inverter startup control and communication wiring.

6. The two-phase power failure emergency rescue system for elevators according to claim 3, characterized in that: Terminal J4.1 of control board TDGK is connected to one end of the discharge resistor, and terminal J4.2 of control board TDGK is connected to the other end of the discharge resistor; terminal J4.4 of control board TDGK is connected to the negative pole of the battery, and the negative pole of the battery is connected to the BAT- terminal of the inverter; terminal J4.3 of control board TDGK is connected to the BAT+ terminal of the inverter, and the positive pole of the battery is connected to the BAT+ terminal of the inverter through switch FA; terminal J4.7 of control board TDGK is connected to the KB1 terminal of the boat-type switch, and terminal J4.8 of control board TDGK is connected to the KB2 terminal of the boat-type switch.

7. The two-phase power failure emergency rescue system for elevators according to claim 6, characterized in that: The discharge resistor is 30Ω / 50W.

8. The two-phase power failure emergency rescue system for elevators according to claim 3, characterized in that: The AC1 end of the inverter is connected to the power output end R, and the AC2 end of the inverter is connected to the power output end S. The inverter converts the AC power into AC power that can be used by the elevator to supply the elevator for power outage emergency rescue.

9. A method for using a two-phase power failure emergency rescue system for an elevator according to any one of claims 1 to 8, characterized in that The following steps are involved: (1) When the mains power is normal, the contactor KY3 coil controls the contactor KY3 contact to be in a closed state, and the switch FA is in an open state; at this time, the emergency rescue system, that is, the ARD system, is in a non-working state, and the three-phase mains power can directly power the elevator and charge the battery at the same time, and the three-phase mains power can be detected through the ARD system; (2) When the mains power is cut off, the ARD system detects this situation and triggers the start signal. The contactor KY3 is in the disconnected state and the ARD system starts to start; (3) The ARD system then transmits the emergency leveling start signal to the elevator control system, and the elevator enters the emergency mode, closing the switch of the phase sequence short-circuit part to complete the phase sequence short-circuit; (4) Then the switch FA is in the closed state, the battery transmits electricity to the inverter, and the inverter converts it into AC power that can be used by the elevator to supply the elevator, maintaining the elevator to the leveling position in the light load direction and starting to run; (5) When the elevator runs to the nearest leveling position in the light load direction, the elevator control system outputs the elevator door opening signal, opens the elevator door, and allows passengers to leave the car; then the elevator door closes again until the elevator control system detects the door closing signal, confirming that the elevator hall door and car door are closed; then the elevator control system outputs the emergency rescue completion signal to the ARD system, the ARD system stops outputting, the switch FA is in the open state, the contactor KY3 contacts are in the closed state again, and the emergency rescue state is exited, waiting for the mains power to arrive; (6) If the mains power is restored during the emergency rescue process, the ARD system will prioritize completing the rescue process. After exiting the emergency rescue state, the contactor KY3 will be closed again, the switch FA will be open, and the elevator will return to normal.

10. The method for using the two-phase power failure emergency rescue system for elevators according to claim 9, characterized in that: In the above step (1), if the battery itself is low on power, the ARD system is in a charging state; if the battery is fully charged, the ARD system is in a silent state.

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