CN111342708A

CN111342708A - Electric interlocking control system of double-drive elevator

Info

Publication number: CN111342708A
Application number: CN202010048460.7A
Authority: CN
Inventors: 汤论发; 谢林坡; 王礼龙; 王湛; 刘荣春; 施其元; 王其辉
Original assignee: Anhui Conch Construction Materials Design Institute Co Ltd
Current assignee: Anhui Conch Construction Materials Design Institute Co Ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-06-26

Abstract

The invention discloses an electrical interlocking control system of a double-drive elevator, which comprises a DCS, a main transmission control circuit and an auxiliary transmission control circuit, wherein the output end of the DCS is respectively connected with the main transmission control circuit and the auxiliary transmission control circuit and is used for driving the main transmission control circuit and the auxiliary transmission control circuit to work, and a contact of a contactor is arranged between the main transmission control circuit and the auxiliary transmission control circuit for interlocking so that the main transmission control circuit and the auxiliary transmission control circuit cannot work at the same time. The invention has the advantages that: the interlocking control system of the double-drive elevator is simple and reliable in structure, is used for preventing accident enlargement caused by parallel operation in the operation and maintenance process of the guarantee elevator, ensures the safety of equipment, improves the operation and maintenance safety of the elevator and prevents misoperation.

Description

Electric interlocking control system of double-drive elevator

Technical Field

The invention relates to the field of electric interlocking safety control, in particular to an electric interlocking control system of a double-drive elevator.

Background

A plurality of processes of the novel cement production line use the high-power elevator, the stability of equipment is considered, some manufacturers configure the double-drive elevator, the double-drive elevator is just the elevator of the double-set main driving motor and the two sets of auxiliary transmission systems, the reliability of the system can be greatly improved by the mode, but how to realize the interlocking control between the main driving motor of the double-drive elevator and the auxiliary transmission motors is of great importance to the normal safe work of the double-drive elevator. Therefore, the technical scheme of the application designs an electric interlocking control system of the double-drive elevator, which is used for realizing interlocking control of the system.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an electric interlocking control system of a double-drive elevator.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides an electric interlocking control system of two elevators that drive, includes DCS, main control circuit that passes, assists and passes control circuit, the output of DCS connects main control circuit, assists and passes control circuit respectively for the work of driving main control circuit, assisting and passing control circuit, main control circuit with it carries out the interlocking so that both can not work simultaneously to assist to set up the contact through the contactor between the control circuit to pass.

The main transmission control circuit comprises a main transmission motor M1 and a main transmission motor M2, three-phase electricity supplies power to the main transmission motor M1 after passing through a normally open contact of a contactor KM1, a current transformer is arranged at the power supply input end of the main transmission motor M1 to detect the input current of the motor, and the output end of the current transformer is connected with a thermal relay KH 1; the output end of the thermal relay KH1 is connected with a power transmitter, the output end of the power transmitter is connected with DCS, and the three-phase power L1 is connected with a leading-out wiring terminal which is connected with a switch S1 and then is connected with an N wire through a coil of a relay K1; the three-phase power supplies power for a main transmission motor M2 after passing through a normally open contact of a contactor KM2, a current transformer is arranged at the power supply input end of the main transmission motor M1 to detect the input current of the motor, and the output end of the current transformer is connected with a thermal relay KH 2; the output end of the thermal relay KH2 is connected with a power transmitter, the output end of the power transmitter is connected with DCS, the three-phase power L1 is connected with one end of a switch S2 from an outgoing wiring terminal, the other end of the switch S2 is respectively connected with a coil of a relay K2 and a switch box ALB2, and a coil of a relay K2 is connected with an N wire; switch box ALB2 is connected with the input end of switch box ALB1, switch box ALB2 includes button S1, switch button S4, button S2, switch box ALB 2' S output end is connected with button S1 and then is connected with switch button S4 by S1, switch button S4 is a dual-channel button and is used for gating two output ends of S4, the first output end is connected with N line after passing through the normally open contact of relay K, the second output end is connected with one end of the coil of contactor KM1 after passing through button S2, and the other end of coil KM1 is connected with N line after passing through the normally closed contact of KH1, the normally closed contact of KH2 and the normally open contact of relay K1; the relay of the power supply loop of the auxiliary transmission motor comprises KM3 and KM4, which are used for respectively controlling the power supply of the auxiliary transmission motors M3 and M4, and the normally closed contacts of the relay are connected in parallel and then connected between an N line and a coil of a relay KM 1; two ends of the coil of the relay KM1 are connected with the coil of the relay KM2 in parallel; a driving serial port DO of the DCS is connected with an N wire after passing through a coil of a relay K; a prepared output port of the DCS is connected with a COM1 port of the DCS through a breaker Q11 after sequentially passing through a normally open contact of a relay K1 and a normally open contact of a relay K2; the response output end of the DCS is connected to a breaker Q11 through the normally open contact of the contactor KM1 and the normally open contact of the contactor KM 2.

The normally open contact of the contactor KM1 and the normally open contact of the contactor KM2 are connected in series and then connected in parallel at two ends of the button S2.

The auxiliary transmission control circuit comprises an auxiliary transmission motor M3 and a motor M4, three-phase power is connected with the motor M3 through a normally open contact of a contactor KM3, and the three-phase power is connected with the motor M4 through the normally open contact of a contactor KM 4; a wiring terminal is led out between the three-phase power and the KM1 normally open contact and is connected with one end of a coil of a relay K3, and the other end of the wiring terminal is connected with an N wire; a wiring terminal is led out between the three-phase power and a normally open contact of KM2 and connected with one end of a button S31, the other end of S31 is connected with a coil of a contactor KM4, the button S41 is connected with two ends of S31 in parallel, the normally open contact of the contactor KM4 is connected with two ends of S31 in parallel, the coil of the contactor KM3 is connected with two ends of a coil of KM4 in parallel, the coil of the contactor KM3 sequentially passes through the normally closed contact of a thermorelay KH3, the normally closed contact of KH4 and the normally open contact of K3 which are connected in series, and then is connected with an N wire, the thermorelay KH3 is arranged at a power supply input end of M3; the normally open contact of the contactor KM1 and the normally open contact of the contactor KM2 are connected in parallel and then connected in series between the coil of the contactor KM3 and the N wire.

The response interface of the DCS is connected with the COM port of the DCS after sequentially passing through the normally open contact of the KM3, the normally open contact of the KM4 and the breaker Q12 which are connected in series.

The invention has the advantages that: the interlocking control system of the double-drive elevator is simple and reliable in structure, is used for preventing accident enlargement caused by parallel operation in the operation and maintenance process of the guarantee elevator, ensures the safety of equipment, improves the operation and maintenance safety of the elevator and prevents misoperation.

Drawings

The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:

FIG. 1 is a schematic diagram of a control circuit for a main drive motor according to the present invention;

FIG. 2 is a schematic diagram of a DCS end circuit connection of the main transmission motor of the present invention;

FIG. 3 is a control circuit diagram of the auxiliary drive motor of the present invention;

fig. 4 is a schematic diagram of the open circuit connection of the DCS terminal of the auxiliary transmission motor according to the present invention.

Detailed Description

The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.

In the design, in order to prevent accident enlargement caused by parallel operation in the operation and maintenance process of the elevator, an electric interlocking system between two main transmission low-voltage drawer loops and electric interlocking between two main transmission and auxiliary transmission low-voltage drawer loops are added, the interlocking system can prevent the occurrence of parallel operation risks, the safe operation of the main transmission and the auxiliary transmission is ensured, and the auxiliary transmission cannot operate in the normal main transmission operation; the auxiliary transmission operation is carried out during maintenance, the main transmission operation cannot be carried out, and the safe operation is ensured. An electrical interlocking system between two main transmission low-voltage loops: in order to ensure that the double motors can be started simultaneously, the design adopts two main transmission low-voltage drawer loops to share one set of control system.

The utility model provides an electric interlocking control system of two elevators that drive, including DCS, main control circuit, assist and pass control circuit, the DCS system is used for realizing to main control circuit, assist and pass control circuit's control and control etc, in order to realize to main control and the control of assisting biography, realize both can not simultaneous working, set up interlocking structure between main control circuit and the assistance control circuit, carry out the interlocking setting through the main normally open contact who passes with the assistance of the corresponding contactor of biography, thereby it is out of work to realize main biography during operation through the mode of circuit electric lock, it is out of work to assist biography during operation main, main control circuit promptly and assist and pass the contact that sets up through the contactor between the control circuit and interlock so that both can not simultaneous working.

As shown in fig. 1, the main control circuit comprises a main transmission motor M1 and a main transmission motor M2, three-phase power passes through a breaker Q1 and a normally open contact of a contactor KM1 and then supplies power to the main transmission motor M1, the normally open contacts of Q and KM1 are connected in series, a current transformer is arranged at a power supply input end of the main transmission motor M1 to detect the input current of the motor, and an output end of the main transmission motor M1 is connected with a thermal relay KH 1; the output end of the thermal relay KH1 is connected with a power transmitter BW, an ammeter and the like, and the output end of the power transmitter is connected with a DCS for uploading monitoring data to the DCS. A connecting terminal is led out from three-phase power L1 between a breaker Q1 and a contactor KM1, is connected with a switch S1 and then is connected with an N wire through a coil of a relay K1, and indicator lights HL1 are connected with two ends of the coil of K1 in parallel and used for giving an electrifying work indication signal; three-phase electricity supplies power to a main motor M2 after passing through a breaker Q2 and a normally open contact of a contactor KM2, a current transformer is arranged at the power supply input end of the main motor M2 to detect the input current of the motor, and the output end of the current transformer is connected with a thermal relay KH 2; the output end of the thermal relay KH2 is connected with devices such as a power transmitter and an ammeter, the output end of the power transmitter is connected with a DCS system and is used for uploading data such as monitoring power to the DCS, a wiring terminal is led out from an L1 phase of three-phase power which is in power supply connection with M2 and is connected with one end of a switch S2, the other end of the switch S2 is respectively connected with one end of an indicator lamp HL2 and a switch box ALB2, and the other end of the indicator lamp HL2 is connected with an N line; the switch box ALB2 is connected with the input end of the switch box ALB1, the button box ALB1 adopts ELB-73, and the button box ALB2-71 adopts ELB-71 signals; the button box ALB2 comprises a button S1, the button box ALB2 comprises a button S1, a switching button S4 and a button S2, the output end of a button S1 of the button box ALB2 is connected with the input end of ALB1, the input end of the button S636 of the button box ALB1 is connected with the button S1 of the ALB1, the button S1 is connected with the input end of the switching button S4, the switching button S4 is a dual-channel button and is used for gating two output ends of S4 to form two gating branches, the first output end is connected with an N line after passing through a normally-open contact of the relay K, a coil of the relay K2 is connected in parallel with two ends of the normally-open contact of the relay K, the second output end is connected with one end of a coil of the contactor KM1 after passing through the button S2, and the other end of the coil KM 1; the relay of the power supply loop of the auxiliary transmission motor comprises KM3 and KM4, which are used for respectively controlling the power supply of the auxiliary transmission motors M3 and M4, and the normally closed contacts of the relay are connected in parallel and then connected between an N line and a coil of a relay KM 1; two ends of the coil of the relay KM1 are connected with the coil of the relay KM2 in parallel, and the indicator lamp HL3 is connected with two ends of the coil in parallel; the normally open contact of the base KM1 and the normally open contact of the base KM2 are connected in series and then connected in parallel at two ends of the button S2.

As shown in fig. 2, a driving serial port DO of the DCS is connected to an N line through a coil of a relay K; a prepared output port of the DCS is connected with a COM1 port of the DCS through a breaker Q11 after sequentially passing through a normally open contact of a relay K1 and a normally open contact of a relay K2; the response output end of the DCS is connected to a breaker Q11 through the normally open contact of the contactor KM1 and the normally open contact of the contactor KM 2. The normally open contact of the contactor KM1 and the normally open contact of the contactor KM2 are connected in series and then connected in parallel at two ends of the button S2.

As shown in fig. 3, the auxiliary transmission control circuit comprises an auxiliary transmission motor M3 and a motor M4, three-phase power is connected with the motor M3 through normally open contacts of a breaker Q3 and a contactor KM3 in sequence, and three-phase power is connected with the motor M4 through normally open contacts of a breaker Q4 and a contactor KM4 in sequence; a wiring terminal is led out between the three-phase power and the KM1 normally open contact and is connected with one end of a coil of a relay K3, and the other end of the wiring terminal is connected with an N wire; a wiring terminal is led out between the three-phase power and a KM2 normally open contact and connected with one end of a button S31, the other end of S31 is connected with a coil of a contactor KM4, a button S41 is connected with two ends of S31 in parallel, a normally open contact of the contactor KM4 is connected with two ends of S31 in parallel, a coil of a contactor KM3 is connected with two ends of a KM4 coil in parallel, the coil of the contactor KM3 sequentially passes through a normally closed contact of a thermorelay KH3, a normally closed contact of KH4 and a normally open contact of K3 which are connected in series, and then is connected with an N wire, the thermorelay KH3 is arranged at a power supply input end of M3, and the thermorelay KH4 is arranged at; the normally open contact of the contactor KM1 and the normally open contact of the contactor KM2 are connected in parallel and then connected in series between the coil of the contactor KM3 and the N wire. As shown in fig. 4, the response interface of the DCS is connected to the COM port of the DCS sequentially through the normally open contact of KM3, the normally open contact of KM4, and the breaker Q12, which are connected in series. Wherein S31, S41 can be implemented by using two button boxes of ELB-72, respectively, and the ELB-72 button box includes two buttons, and the connection manner is as shown in fig. 3.

The control principle of this application does: when the main transmission breakers Q1 and Q2 are closed, after the field button boxes ALB1 and ALB2 are closed, coils of K1 and K2 are electrified, normally open contacts of the coils are closed, a ready signal at the DCS end is conducted at the moment, the DCS end can display that the work is in a state of a baiton at the moment, and when the S2 of the button box is closed, if the thermal relays KH1 and KH2 are not normally opened, normally closed contacts of the coils are closed, and if the auxiliary transmissions KM3 and KM4 are in an open state at the moment, normally closed contacts of the coils are closed, as can be seen from fig. 1, the coils of KM1 and KM2 are electrified, the normally open contacts of KM1 are closed, the normally open contacts of KM2 are closed, the main transmission normally works at the moment, a response signal loop at the DCS side is conducted, and a monitoring signal can be obtained; on the contrary, when the auxiliary transmission works, the normally closed contacts of the KM3 and the KM4 are opened, and the KM1 and the KM2 cannot be electrified, so that the interlocking setting is realized. Normally open contacts of KM1 and KM2 are connected in series and then connected in parallel at two ends of S2 of the button box, so that the attraction of relay contacts is self-maintained. Similarly, in the auxiliary transmission loop, because the normally closed contacts of the main transmission KM1 and KM2 are connected in series, when the main transmission works, the coils of KM3 and KM4 cannot be electrified, namely, M3 and M4 cannot work, so that the requirement that the main transmission and the auxiliary transmission cannot work simultaneously is met, and the safety of the interlocking setting is realized.

The application aims to use the high-power elevator in a plurality of procedures of a novel cement production line, and some manufacturers are configured with double-motor drive in consideration of the stability of equipment, so that the double-drive elevator is the elevator with two sets of main drive motors and two sets of auxiliary transmission systems.

As shown in fig. 1-4, the main transmission control schematic diagram of the double-drive elevator has two primary system diagrams, which are respectively installed in two drawer loops, and sequentially comprise a circuit breaker (Q1, Q2), a contactor (KM1, KM2), a current transformer (TA 1-TA 3), a thermal relay (KH1, KH2) connected with the secondary side of the current transformer, an electric energy meter, a current transmitter and other components; the method comprises the steps that a set of control loop system is adopted, limit switches of drawer loops, an emergency stop button ALB2 and a control button ALB1 are sequentially arranged, when ALB1 is switched to a central control mode, if KH1 or KH2 has no fault action and two drawer loop breakers are switched on, relays K1 and K2 are switched on electrically, auxiliary contacts of the relays send signals to a DCS to be ready, when the relays need to be started, the DCS drives the relays K to be switched on, the auxiliary contacts send signals to the control loops, KM1 and KM2 are switched on electrically, and if KH1 or KH2 is in overload fault, the whole control loop is switched off and stops; when the ALB1 is switched to a manual control mode, the S2 in the ALB1 is pressed on site, the KM1 and the KM2 are powered on and switched on simultaneously, the auxiliary contacts of the KM1 and the KM2 are attracted simultaneously so as to be self-maintained, and if the switching-off is needed, the S1 in the ALB1 is pressed.

The auxiliary transmission control schematic diagram of the double-drive elevator is similar to the main transmission control schematic diagram, and the description is not repeated here.

In order to prevent accident expansion caused by parallel operation in the operation and maintenance processes of the elevator, an electric interlocking system between two main transmission low-voltage drawer loops (KH1 and KH2 are connected in series with K1 to a main control loop) and an electric interlocking general condition between the main transmission low-voltage drawer loops and the auxiliary transmission low-voltage drawer loops are added, namely the main transmission low-voltage loops and the auxiliary transmission low-voltage drawer loops cannot be powered at the same time (the main transmission control of the double-drive elevator is to connect the contacts of two contactors KM1 and KM2 in parallel and then transmit the contacts to the auxiliary transmission, and the auxiliary transmission control of the double-drive elevator is to connect the contacts of two contactors KM1 and KM2 in parallel and then transmit the contacts. If main pass and two low pressure drawer return circuits of supplementary biography are all in the closure state, then because interlocking all can not close a floodgate each other, the interlock system can prevent to appear the parallel operation risk, has guaranteed the safe and reliable of system to make the normal operating of system and the supplementary pass operation when overhauing obtain reliable operation.

It is clear that the specific implementation of the invention is not restricted to the above-described embodiments, but that various insubstantial modifications of the inventive process concept and technical solutions are within the scope of protection of the invention.

Claims

1. The utility model provides an electric interlocking control system of two elevators that drive which characterized in that: including DCS, main biography control circuit, assist and pass control circuit are connected respectively to the output of DCS for the work of drive main biography control circuit, assist and pass control circuit, main biography control circuit with it carries out the interlocking so that both can not work simultaneously to assist to set up the contact through the contactor between the biography control circuit.

2. The electrical interlocking control system of the double-drive elevator as claimed in claim 1, wherein: the main transmission control circuit comprises a main transmission motor M1 and a main transmission motor M2, three-phase electricity supplies power to the main transmission motor M1 after passing through a normally open contact of a contactor KM1, a current transformer is arranged at the power supply input end of the main transmission motor M1 to detect the input current of the motor, and the output end of the current transformer is connected with a thermal relay KH 1; the output end of the thermal relay KH1 is connected with a power transmitter, the output end of the power transmitter is connected with DCS, and the three-phase power L1 is connected with a leading-out wiring terminal which is connected with a switch S1 and then is connected with an N wire through a coil of a relay K1; the three-phase power supplies power for a main transmission motor M2 after passing through a normally open contact of a contactor KM2, a current transformer is arranged at the power supply input end of the main transmission motor M2 to detect the input current of the motor, and the output end of the current transformer is connected with a thermal relay KH 2; the output end of the thermal relay KH2 is connected with a power transmitter, the output end of the power transmitter is connected with DCS, the three-phase power L1 is connected with one end of a switch S2 from an outgoing wiring terminal, the other end of the switch S2 is respectively connected with a coil of a relay K2 and a switch box ALB2, and a coil of a relay K2 is connected with an N wire; switch box ALB2 is connected with the input end of switch box ALB1, switch box ALB2 includes button S1, switch button S4, button S2, switch box ALB 2' S output end is connected with button S1 and then is connected with switch button S4 by S1, switch button S4 is a dual-channel button and is used for gating two output ends of S4, the first output end is connected with N line after passing through the normally open contact of relay K, the second output end is connected with one end of the coil of contactor KM1 after passing through button S2, and the other end of coil KM1 is connected with N line after passing through the normally closed contact of KH1, the normally closed contact of KH2 and the normally open contact of relay K1; the relay of the power supply loop of the auxiliary transmission motor comprises KM3 and KM4, which are used for respectively controlling the power supply of the auxiliary transmission motors M3 and M4, and the normally closed contacts of the relay are connected in parallel and then connected between an N line and a coil of a relay KM 1; two ends of the coil of the relay KM1 are connected with the coil of the relay KM2 in parallel; a driving serial port DO of the DCS is connected with an N wire after passing through a coil of a relay K; a prepared output port of the DCS is connected with a COM1 port of the DCS through a breaker Q11 after sequentially passing through a normally open contact of a relay K1 and a normally open contact of a relay K2; the response output end of the DCS is connected to a breaker Q11 through the normally open contact of the contactor KM1 and the normally open contact of the contactor KM 2.

3. The electrical interlocking control system of the double-drive elevator as claimed in claim 2, wherein: the normally open contact of the contactor KM1 and the normally open contact of the contactor KM2 are connected in series and then connected in parallel at two ends of the button S2.

4. An electrical interlock control system for a dual drive elevator as claimed in any one of claims 1 to 3, wherein: the auxiliary transmission control circuit comprises an auxiliary transmission motor M3 and a motor M4, three-phase power is connected with the motor M3 through a normally open contact of a contactor KM3, and the three-phase power is connected with the motor M4 through the normally open contact of a contactor KM 4; a wiring terminal is led out between the three-phase power and the KM1 normally open contact and is connected with one end of a coil of a relay K3, and the other end of the wiring terminal is connected with an N wire; a wiring terminal is led out between the three-phase power and a normally open contact of KM2 and connected with one end of a button S31, the other end of S31 is connected with a coil of a contactor KM4, the button S41 is connected with two ends of S31 in parallel, the normally open contact of the contactor KM4 is connected with two ends of S31 in parallel, the coil of the contactor KM3 is connected with two ends of a coil of KM4 in parallel, the coil of the contactor KM3 sequentially passes through the normally closed contact of a thermorelay KH3, the normally closed contact of KH4 and the normally open contact of K3 which are connected in series, and then is connected with an N wire, the thermorelay KH3 is arranged at a power supply input end of M3; the normally open contact of the contactor KM1 and the normally open contact of the contactor KM2 are connected in parallel and then connected in series between the coil of the contactor KM3 and the N wire.

5. The electrical interlocking control system of the double-drive elevator as claimed in claim 4, wherein: the response interface of the DCS is connected with the COM port of the DCS after sequentially passing through the normally open contact of the KM3, the normally open contact of the KM4 and the breaker Q12 which are connected in series.