CN217322929U - A two-phase power failure emergency rescue system for low-power elevators - Google Patents

Abstract

The utility model discloses a two-phase power failure emergency rescue system for a low-power elevator, which comprises a contactor KY3, a control panel, an inverter, a storage battery, a switch FA and a transformer; the three-phase mains supply supplies power to the elevator through a contactor KY3 contact, is connected with the control panel through a contactor KY3 coil, further charges the ARD system, and is detected through the ARD system; the control panel is connected with the storage battery and charges the storage battery; the control panel is connected with the transformer and is converted into alternating voltage used by the elevator through the transformer; the control panel is connected with the inverter, and the battery passes through switch FA to be connected with the inverter, and will transmit the electricity to the inverter, and the rethread inverter is transformed into the alternating current that the elevator used and supplies to the elevator and has a power failure emergency rescue. The utility model discloses input voltage still adopts the mode of three-phase input, but its output voltage becomes the mode of double-phase output, and is convenient, economic, reasonable, is applicable to on the miniwatt elevator.

Description

A two-phase power failure emergency rescue system for low-power elevators

technical field

The utility model relates to the technical field of elevators, in particular to a two-phase power failure emergency rescue system for low-power elevators.

Background technique

The power failure emergency rescue device is a kind of equipment that provides power to the elevator when the normal power supply of the elevator loses power or the power phase is missing, so that the power circuit of the elevator is energized, so that the elevator car can be run to the leveling position at a low speed, and the door can be opened to allow passengers to evacuate safely. device.

In order to make the power supply capacity required for power failure rescue as small as possible, the general practice is to drive the elevator to run in the light-load direction during power failure. At this time, the inverter can drive the elevator with only a small amount of force, making the emergency rescue device for power failure. Capacity allocation has also been greatly reduced.

At present, for ordinary passenger elevators, because the elevator inverter uses three-phase power supply, the general practice is: the power failure emergency rescue device outputs three-phase power, but this leads to the complex structure of the internal components of the power failure emergency rescue device, and the volume Larger, higher cost. If only two-phase electricity can be supplied to the elevator to complete the rescue during the power failure emergency rescue, the internal component structure of the power failure emergency rescue device will 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

The technical problem to be solved by the utility model is to provide a two-phase power failure emergency rescue system for a low-power elevator. The input voltage still adopts a three-phase input mode, but the output voltage is changed to a two-phase output mode, which can realize the power failure of the elevator. Emergency rescue function, convenient, economical and reasonable, suitable for low-power elevators.

In order to solve the above-mentioned technical problems, the present utility model adopts the following technical solutions: a two-phase power failure emergency rescue system for a low-power elevator of the present utility model, its innovation lies in: comprising a contactor KY3, a control board, an inverter, a battery, Switch FA and transformer; three-phase commercial power supplies power to the elevator through the contactor KY3 contact, and is connected to the control board through the contactor KY3 coil, and then charges the ARD system and is detected by the ARD system; the control board is connected to the The battery is connected to charge 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 passes through the switch FA It is connected with the inverter, and transmits electricity to the inverter, and then converts the inverter into alternating current used by the elevator to supply the elevator for emergency rescue of power failure.

Preferably, the incoming lines L1, L2, and L3 of the three-phase mains are respectively connected to the power output terminals R, S, and T through the contacts of the contactor KY3, so as to supply power to the elevator.

Preferably, the control board adopts the control board TDGK; the terminals J1.1, J1.3 and J1.5 of the control board TDGK are respectively connected to the incoming lines L1, L2 and L3 of the three-phase mains to charge the ARD system and pass the The ARD system is used for detection; the terminals J1.7 and J1.9 of the control board TDGK are respectively connected with the coil of the contactor KY3 and form a loop to control the closing of the contactor of the contactor KY3.

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

Preferably, the terminal J-5 of the control board TDGK is connected to the terminal J-5 of the inverter for inverter start control and communication cable.

Preferably, the terminal J4.1 of the control board TDGK is connected to one end of the discharge resistor, and the terminal J4.2 of the control board TDGK is connected to the other end of the discharge resistor; the terminal J4.4 of the control board TDGK is connected to the negative pole of the battery, and the battery The negative pole of the battery is connected to the BAT- terminal of the inverter; the terminal J4.3 of the 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 the switch FA; the terminal J4.7 of the control board TDGK Connect the KB1 terminal of the rocker switch, and connect the terminal J4.8 of the control board TDGK to the KB2 terminal of the rocker switch.

Preferably, the discharge resistance is 30Ω/50W.

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 is converted into AC power that the elevator can use to supply the elevator for emergency rescue of power failure.

The beneficial effects of the present utility model:

(1) The input voltage of the utility model still adopts the mode of three-phase input, but its output voltage is changed to the mode of two-phase output, which can realize the emergency rescue function of the elevator in case of power failure, which is convenient, economical and reasonable, and is suitable for low-power elevators;

(2) While ensuring that the elevator can safely and efficiently realize its rescue function, the utility model also greatly simplifies its internal structure, reduces the volume, makes the installation more convenient and flexible, greatly reduces the cost, and has a more targeted application. sex.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some implementations described in the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is a configuration structure diagram of a two-phase power failure emergency rescue system for an elevator of the present invention and an elevator system.

FIG. 2 is a system logic block diagram of the present invention.

Figure 3 is an electrical schematic diagram of a two-phase power failure emergency rescue system for elevators of the present invention.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below through specific embodiments.

A two-phase power failure emergency rescue system for a low-power elevator of the present invention includes a contactor KY3, a control board, an inverter, a battery, a switch FA and a transformer; The contactor KY3 contacts power for the elevator, and is connected to the control board through the contactor KY3 coil, and then charges the ARD system and is detected by the ARD system; among them, the incoming lines L1, L2, and L3 of the three-phase mains pass through the contactor respectively. The KY3 contact is connected to the power output terminals R, S, T, and then supplies power to the elevator.

As shown in Figures 1 to 3, the control board is connected to the battery and charges the battery; the control board is connected to the transformer, and is converted into the AC voltage used by the elevator through the transformer; the control board is connected to the inverter, and the battery is connected to the battery through the switch FA. The inverter is connected, and the electricity is transmitted to the inverter, and then the inverter is converted into the AC power used by the elevator to supply the elevator for emergency rescue of power failure.

The control board in the utility model adopts the control board TDGK; as shown in Figures 1 to 3, the terminals J1.1, J1.3 and J1.5 of the control board TDGK are respectively connected to the incoming lines L1, L2 and L3 of the three-phase mains, Charge the ARD system and test it through the ARD system; the terminals J1.7 and J1.9 of the control board TDGK are respectively connected with the contactor KY3 coil and form a loop to control the closing of the contactor KY3 contact; The terminals J3.1 and J3.3 are respectively connected with one end of the transformer, and the terminals J3.5 and J3.6 of the control board TDGK are respectively connected with the other end of the transformer, which are then converted into the AC voltage that the elevator can use through the transformer.

As shown in Figure 1~3, the terminal J-5 of the control board TDGK is connected with the terminal J-5 of the inverter, which is used for inverter start control and communication cable; the terminal J4.1 of the control board TDGK is connected to the discharge resistor. One end is connected, and the terminal J4.2 of the control board TDGK is connected to the other end of the discharge resistor; the terminal J4.4 of the control board TDGK is connected to the negative electrode of the battery, and the negative electrode of the battery is connected to the BAT- end of the inverter; The terminal J4.3 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 the switch FA; the terminal J4.7 of the control board TDGK is connected to the KB1 terminal of the rocker switch, and the terminal J4 of the control board TDGK. 8 Connect to the KB2 terminal of the rocker switch; among them, the discharge resistance is 30Ω/50W.

As shown in Figures 1 to 3, the AC1 terminal of the inverter is connected to the power output terminal R, and the AC2 terminal of the inverter is connected to the power output terminal S, and the inverter is converted into AC power that the elevator can use to supply the elevator Carry out emergency rescue of power failure.

The working principle of a two-phase power failure emergency rescue system for an elevator of the present invention, as shown in Figures 1 to 3, includes the following steps:

(1) When the mains 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 is available. Directly supply power to the elevator, charge the battery at the same time, and detect the three-phase mains power through the ARD system;

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;

(2) When the mains is powered off, the ARD system detects this situation, triggers the start signal, the contactor KY3 contact is in the disconnected state, and the ARD system starts to start;

(3) Then the ARD system transmits the emergency leveling start signal to the elevator control system, the elevator enters the emergency mode, and closes the switch of the phase sequence short circuit 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 then the inverter converts it into alternating current that can be used by the elevator to supply the elevator, maintaining the elevator to start running at the leveling position in the light-load direction;

(5) After the elevator runs to the leveling position closest to the light load direction, the elevator control system outputs the elevator door open signal, opens the elevator door, and makes the passengers leave the car; then the elevator closes the door again until the elevator control system detects the door closing in-position signal, Confirm 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 output, the switch FA is in the open state, the contactor KY3 contact is in the closed state again, and the emergency rescue is exited state, waiting for the mains to arrive;

(6) If in the emergency rescue state, when the mains power is restored, the ARD system will give priority to completing the rescue process. After exiting the emergency rescue state, the contact of the contactor KY3 will be closed again, and the switch FA will be open. The elevator then resumes its normal state; the whole process does not conflict with the restored mains.

The beneficial effects of the present utility model:

(1) The input voltage of the utility model still adopts the mode of three-phase input, but its output voltage is changed to the mode of two-phase output, which can realize the emergency rescue function of the elevator in case of power failure, which is convenient, economical and reasonable, and is suitable for low-power elevators;

(2) While ensuring that the elevator can safely and efficiently realize its rescue function, the utility model also greatly simplifies its internal structure, reduces the volume, makes the installation more convenient and flexible, greatly reduces the cost, and has a more targeted application. sex.

The above-mentioned embodiments are only the preferred embodiments of the present utility model to describe, and do not limit the concept and scope of the present utility model. Various modifications and improvements made by the new technical solution shall fall within the protection scope of the present invention, and the technical content of the claimed protection of the present invention has been fully recorded in the technical requirements.

Claims (8)

1. a two-phase power failure emergency rescue system for a low-power elevator is characterized in that: comprising contactor KY3, control panel, inverter, accumulator, switch FA and transformer; Power supply, and connect to the control board through the contactor KY3 coil, and then charge the ARD system and detect it through the ARD system; the control board is connected to the battery and charges the battery; the control board is connected to the The transformer is connected, and is converted into the AC voltage used by the elevator through the transformer; the control board is connected with the inverter, and the battery is connected with the inverter through the switch FA, and transmits electricity to the inverter, The inverter is then converted into the AC power used by the elevator to supply the elevator for emergency rescue of power failure. 2. The two-phase power failure emergency rescue system for an elevator according to claim 1, characterized in that: the incoming lines L1, L2, L3 of the three-phase mains pass through the contacts of the contactor KY3 and the power output terminals R, S respectively. , T connection, and then supply power to the elevator. 3. A two-phase power failure emergency rescue system for an elevator according to claim 2, characterized in that: the control board adopts the control board TDGK; the terminals J1.1, J1.3 and J1.5 of the control board TDGK are respectively Connect the incoming lines L1, L2, and L3 of the three-phase mains to charge the ARD system and test it through the ARD system; the 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. 4. The two-phase power failure emergency rescue system for an elevator according to claim 3, wherein the terminals J3.1 and J3.3 of the control board TDGK are respectively connected to one end of the transformer, and the terminal J3 of the control board TDGK is connected to one end of the transformer respectively. .5 and J3.6 are respectively connected to the other end of the transformer, and then converted into the AC voltage that the elevator can use through the transformer. 5. A two-phase power failure emergency rescue system for an elevator according to claim 3, wherein the terminal J-5 of the control board TDGK is connected to the terminal J-5 of the inverter, and is used for inverter start control and Communication cable. 6. The two-phase power failure emergency rescue system for an elevator according to claim 3, wherein the terminal J4.1 of the control board TDGK is connected to one end of the discharge resistor, and the terminal J4.2 of the control board TDGK is connected to the discharge resistor. The other end of the resistor is connected; the terminal J4.4 of the control board TDGK is connected to the negative electrode of the battery, and the negative electrode of the battery is connected to the BAT- end of the inverter; the terminal J4.3 of the control board TDGK is connected to the BAT+ end of the inverter, and the battery is connected to the BAT+ end of the inverter. The positive pole of the inverter is connected to the BAT+ terminal of the inverter through the switch FA; the terminal J4.7 of the control board TDGK is connected to the KB1 terminal of the rocker switch, and the terminal J4.8 of the control board TDGK is connected to the KB2 terminal of the rocker switch. 7 . The two-phase power failure emergency rescue system for an elevator according to claim 6 , wherein the discharge resistance is 30Ω/50W. 8 . 8. A two-phase power failure emergency rescue system for an elevator according to claim 3, characterized in that: the AC1 end of the inverter is connected with the power output end R, and the AC2 end of the inverter is connected with the power output end S , and convert the inverter into alternating current that the elevator can use to supply the elevator for emergency rescue of power failure.

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