CN216337426U

CN216337426U - Safety interlocking device of dry quenching electric locomotive and hoister

Info

Publication number: CN216337426U
Application number: CN202121737992.8U
Authority: CN
Inventors: 闫江龙; 林正东; 唐军; 罗志园
Original assignee: Nanjing Jinjiang Metallurgical Burden Co ltd; Nanjing Iron and Steel Co Ltd
Current assignee: Nanjing Jinjiang Metallurgical Burden Co ltd; Nanjing Iron and Steel Co Ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-04-19
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a safety interlocking device of a dry quenching electric locomotive and a hoister, which comprises a laser ranging system and a PLC; the laser ranging system comprises a laser generation receiving unit arranged on a derrick wall of the hoist, a data processing unit connected with the laser generation receiving unit, a data transmission unit connected with the data processing unit, and a reflecting device arranged on a coke tank rotating base; when the electric locomotive is positioned at an accurate centering position and the coke pot is accurately rotated and positioned, the reflecting device reflects the laser beam of the laser generation receiving unit back to the laser generation receiving unit; and the PLC receives the signal transmitted by the data transmission unit and controls the operation of the hoister according to the signal. The device does not change the normal working procedures of the rotation and the lifting of the original coke tank, and only stops the lifting operation of the lifter in an interlocking manner under the emergency abnormal condition that the coke tank deviates or the position of the electric locomotive deviates, thereby preventing accidents.

Description

Safety interlocking device of dry quenching electric locomotive and hoister

Technical Field

The utility model relates to safety equipment for coke dry quenching production, in particular to a safety interlocking device for a coke dry quenching electric locomotive and a hoister.

Background

The coke dry quenching refers to a coke quenching method for cooling red coke by adopting inert gas. Usually CDQ is short for Dry Coke Quenching, Coke Dry Quenching.

The dry quenching electric locomotive runs on a running track at the coke side of the coke oven and is used for dragging a coke tank car and removing coke from the coke oven for coke receiving. When coke is connected, in order to keep uniform coke distribution, the coke tank is always in a rotating state, the coke connection is completed, the coke tank stops rotating and positioning, the electric locomotive pulls the coke tank car filled with red coke to the position under the derrick of the elevator, the coke tank is lifted to the inlet of the dry quenching furnace by the elevator, and the coke tank is loaded into the dry quenching furnace. And the coke tank is used for loading the red coke into the dry quenching furnace from the bottom door, returning to the derrick of the hoist, falling, receiving the red coke by the electric locomotive, receiving the red coke again and repeatedly.

The dry quenching hoister is a key large-scale device of a dry quenching process, is special automatic hoisting equipment for transporting red coke to be dry quenched to a dry quenching furnace, and can efficiently, safely and accurately finish the automatic loading, unloading and transporting of red hot red coke through program control under the condition of unmanned operation. The main technological process of the dry quenching hoister is that a coke tank filled with red coke below a hoisting tower is hoisted to the top of the tower, the coke tank moves to the dry quenching tower along a rail, and after accurate alignment, the coke tank is lowered to the position above a coke charging device hopper at the top of the dry quenching furnace. When the coke tank slowly falls on the hopper, the gate at the bottom of the coke tank is automatically opened under the action of self weight, and the red coke is loaded into the dry quenching furnace. After the red coke is loaded, the lifting mechanism makes a lifting motion, the bottom gate of the coke tank is gradually closed until the bottom gate is closed, and the empty coke tank begins to rise until the upper limit. And returning the hoister to the hoisting tower along the rail, vertically lowering the empty coke tank to a lower standby position, placing the coke tank on a coke tank carrier at the bottom of the tower after receiving the command, and continuously dropping the sling until the lifting hook is completely opened to prepare for the next working cycle.

In the introduction, the interactive work of the electric locomotive and the hoister is unmanned operation and automatic operation, the coke tank rotary positioning has clear positioning control in the coke tank car control system, and the positioning control is realized by the APS positioning system on the ground when the coke tank rotary positioning is carried out in the transverse positioning under the hoisting derrick. The control principle is simple, no problem exists, but in the actual production, many coking enterprises have the situation that the coke tank rotates and positions signals and the vehicle is centered and signals are mistakenly moved. Two kinds of signals are sent by mistake, the coke tank is still automatically lifted when the lifter system is mistaken for normal conditions, and serious production and equipment accidents can be caused. Especially, the rotary positioning is mistakenly carried out, serious production accidents such as the failure of coke tank hangers, the abnormal opening of a coke tank bottom door, the falling of red coke, the mechanical damage and the like can be caused, and the high-temperature red coke can even cause serious personal injury to working personnel and rush repair personnel. The above risks, although not very frequent, have serious consequences.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the defects that in the prior art, when a coke dry quenching electric locomotive and a hoister interactively work, a coke tank rotation positioning signal or a hoister centering signal is mistakenly sent, and a hoister system is mistaken for a normal condition, the coke tank is still automatically hoisted, the utility model provides a safety interlocking device of the coke dry quenching electric locomotive and the hoister.

The technical scheme is as follows: the safety interlocking device of the coke dry quenching electric locomotive and the hoister comprises a laser ranging system and a PLC (programmable logic controller); the laser ranging system comprises a laser generation receiving unit arranged on a derrick wall of the hoist, a data processing unit connected with the laser generation receiving unit, a data transmission unit connected with the data processing unit, and a reflecting device arranged on a coke tank rotating base; when the electric locomotive is positioned at an accurate centering position and the coke pot is accurately rotated and positioned, the reflecting device reflects the laser beam of the laser generation receiving unit back to the laser generation receiving unit; and the PLC receives the signal transmitted by the data transmission unit and controls the operation of the hoister according to the signal.

The working principle is as follows: when the electric locomotive runs to a specified centering position, a laser generation receiving unit arranged on a derrick wall of the elevator emits laser beams to a reflecting device on a rotary base of the coke tank which is several meters away, if the coke tank rotates to a correct position and the electric locomotive runs and is positioned at the specified position, a laser ranging system sends out a lifting instruction to a PLC of the dry quenching EI system, and the elevator is normally lifted. If the coke tank does not rotate to the correct position and/or the walking position of the electric locomotive has deviation, the reflecting device cannot reflect the laser beam back to the laser generation receiving unit, and then the laser ranging system sends a lifting-inadmissible instruction to the dry quenching EI system PLC.

The PLC is characterized by also comprising an alarm device which is connected with the PLC. When the laser ranging system sends out and does not allow the promotion instruction to give dry quenching EI system PLC, PLC sends alarm signal to alarm device simultaneously, reminds the staff to intervene the processing.

Has the advantages that: compared with the prior art, the device does not change the normal working procedures of the rotation and the lifting of the original coke tank, and only stops the lifting operation of the lifter in an interlocking manner under the emergency abnormal condition that the coke tank deviates or the position of the electric locomotive deviates, so that accidents are prevented. The device is different from the additional positioning control of the coke tank car, and the laser generation receiving unit of the device is fixedly installed on a building wall with a better environment, so that the device has good independence and good stability. The normal operation of the device cannot be influenced by the line fault of the electric locomotive. Meanwhile, the reflecting device is arranged on a rotary base of the coke tank car, so that the rotary positioning consistency can be reflected, the horizontal position of the whole locomotive can be reflected to be on the same line with the elevator, the potential safety hazard of inaccurate positioning when the electric locomotive and the elevator are interacted can be avoided to the maximum extent, the risk is avoided to the maximum extent, and the stable and smooth operation of the coke dry quenching production is ensured.

Drawings

FIG. 1 is a schematic diagram of a safety interlock for a dry quenching electric locomotive and hoist.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in figure 1, the safety interlocking device of the dry quenching electric locomotive and the hoister mainly comprises five parts, namely a laser ranging system 1, a PLC, an alarm device 5 and an APS positioning system 8. The APS positioning system 8 is a device mainly used for positioning control in the prior art, the laser ranging system 1 and the alarm device 5 are the main improvements of the utility model on the prior art, and can be controlled by a PLC (programmable logic controller), after the electric locomotive 4 is stopped, the existing APS positioning system 8 is firstly adopted for transverse positioning, and then laser positioning judgment is carried out.

Specifically, the laser ranging system 1 includes a laser generation receiving unit 11 installed on a derrick wall of a hoist, a data processing unit 12 connected to the laser generation receiving unit 11, a data transmission unit 13 connected to the data processing unit 12, and a reflection device 2 installed on a coke drum rotating base 3.

The data processing unit 12 may be an existing laser ranging data processing unit in the market. The reflecting device 2 is a high temperature resistant reflecting plate, and is subjected to antifouling treatment, specifically, an antifouling coating can be coated on the reflecting plate, or equipment such as a decontamination cover is arranged around the reflecting plate, and a decontamination brush is arranged on the surface of the reflecting plate for decontamination.

The installation positions of the laser generation receiving unit 11 and the reflecting device 2 are determined according to actual conditions, and when the emitted laser beams are required to be reflected back to the laser generation receiving unit 11 by the reflecting device 2, the focal tank is accurately positioned and the electric locomotive 4 is also in an accurate centering position.

The laser generation receiving unit 11 transmits the signal to the data processing unit 12 for processing, when the coke tank rotates to a correct position and the electric locomotive 4 is positioned at a specified position in a walking mode, the laser generation receiving unit 11 receives the reflected laser beam, and the data processing unit 12 sends a lifting permission signal to the PLC through the data transmission unit 13. When the coke tank is not rotated to the correct position and/or the electric locomotive 4 is not positioned at the specified position, the laser generating and receiving unit 11 cannot receive the laser beam, and the data processing unit 12 sends a lifting disallowance signal to the PLC through the data transmission unit 13.

The PLC is an original PLC of the dry quenching EI system, and the functions can be realized by simple programming of the existing program.

Alarm device 5 sets up at other control chamber of machine to connect PLC, send out the police dispatch newspaper through PLC control, remind the staff in time to intervene when the location is unusual. The alarm device 5 is also connected with an alarm reset button 6, and after the position is corrected, the fault alarm can be reset through the alarm reset button 6 in the operating room.

In addition, a changeover switch 7 for controlling the interlocking and closing of the laser ranging system 1 is included. The laser ranging system is in an on state at ordinary times, and when the laser ranging system 1 breaks down, the change-over switch 7 is switched to an off state, so that interlocking can be separated, and smooth production is guaranteed.

Claims

1. A safety interlocking device of a dry quenching electric locomotive and a hoister is characterized by comprising a laser ranging system (1) and a PLC; the laser ranging system (1) comprises a laser generation receiving unit (11) arranged on a derrick wall of the hoist, a data processing unit (12) connected with the laser generation receiving unit (11), a data transmission unit (13) connected with the data processing unit (12), and a reflecting device (2) which is arranged on a coke tank rotating base (3) and used for reflecting laser beams of the laser generation receiving unit (11); and the data transmission unit (13) is connected with the PLC.

2. The safety interlock device for a dry quenching electric locomotive and hoist according to claim 1, characterized in that the reflecting device (2) is a high temperature resistant reflecting plate.

3. The safety interlock device for a dry quenching electric locomotive and hoist according to claim 1, characterized by comprising an alarm device (5) connected with the PLC.

4. The safety interlock device for a dry quenching electric locomotive and elevator according to claim 3, characterized in that the alarm device (5) is further connected with an alarm reset button (6).

5. The safety interlock device for a dry quenching electric locomotive and hoist according to claim 1, characterized by comprising a transfer switch (7) for controlling the interlocking and closing of the laser ranging system (1).

6. The safety interlock for a dry quenching electric locomotive and hoist according to claim 1, characterized by further comprising an APS positioning system (8).