CN108264910B - Method for detecting and controlling abnormal speed of coke oven locomotive - Google Patents
Method for detecting and controlling abnormal speed of coke oven locomotive Download PDFInfo
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- CN108264910B CN108264910B CN201611267887.6A CN201611267887A CN108264910B CN 108264910 B CN108264910 B CN 108264910B CN 201611267887 A CN201611267887 A CN 201611267887A CN 108264910 B CN108264910 B CN 108264910B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
Abstract
The invention relates to a method for detecting and controlling abnormal speed of a coke oven locomotive, which comprises the following steps: 1) arranging a displacement identification device in a vehicle deceleration area, wherein the code of the displacement identification device adopts an 8421 code coding mode, signals can be read by a vehicle-mounted control system, the vehicle-mounted control system calculates the current position of a vehicle through the read information and times, 2) the acquisition of standard time through different displacement sections is completed, and the vehicle-mounted control system acquires the time passing through each section in the deceleration process of the coke oven locomotive to form standard passing time; in production, real time of passing each section is collected and recorded in real time, standard passing time of the section is compared, if the time difference is large, speed abnormity is indicated, and an alarm signal is output; 3) the automatic protection of abnormal speed is realized, after the vehicle-mounted control system automatically confirms that the speed is abnormal, the vehicle-mounted control system automatically performs deceleration or sudden stop protection according to a set protection method, and accidents caused by abnormal speed of the locomotive are avoided.
Description
Technical Field
The invention relates to a method for detecting and controlling the abnormal speed of a coke oven locomotive, belonging to the technical field of coke oven control.
Background
Coke pusher, coke guide, coal feeding car and electric locomotive system (four cars for short) of coke oven are important equipments in coke oven production, and their operation condition directly determines the quality and yield of coke oven production. The running systems of four large coke oven cars are also an important link in the production and operation process of each car, and a heavy-load and high-speed running locomotive runs on a track at a high speed, so that if the speed control is abnormal, serious consequences such as collision can be caused. Taking an electric locomotive as an example, the electric locomotive comprises a power locomotive and two carrying vehicles (see a side view and a top view of a figure 1), wherein the power locomotive drags the two carrying vehicles of the No. 1 carrying vehicle and the No. 2 carrying vehicle to run on a track at a high speed, and the electric locomotive has the functions of sequentially completing the cycle work of red coke receiving in a coke oven area, coke tank receiving in a walking and back dry quenching area, red coke feeding in a walking and back alignment area, and coke returning to the coke oven area. Because the track is installed in the open air, under the condition that the load changes violently, the wheels are possibly changed into a sliding state from a rolling state on the track, the detection of the original speed monitoring system fails, and the speed setting device sets the speed value according to the wrong feedback signal, so that the speed is out of control to cause serious accidents. Especially, in the case of full-automatic contraposition running, due to the lack of a reliable speed detection device and a speed control method, the out-of-control coke oven locomotive still runs at the original set speed, the resulting consequences are particularly serious, and a new technical scheme is needed to solve the problems.
Disclosure of Invention
The invention provides a method for detecting and controlling the abnormal speed of a coke oven locomotive aiming at the technical problems in the prior art, and the technical scheme mainly monitors the speed of the coke oven heavy-duty locomotive (a coke pusher, a coke guide, a coal charging car and an electric locomotive) running on a steel rail in real time, finds the abnormal running speed in time, can adopt corresponding control measures to avoid the risk caused by the abnormal speed, improves the safety of the high-speed running of the coke oven locomotive and realizes the safe and reliable running of the locomotive.
In order to achieve the above object, the technical solution of the present invention is a method for detecting and controlling an abnormal speed of a coke oven locomotive, characterized in that the method comprises:
1) a displacement identification device is arranged in a vehicle deceleration area, the code of the displacement identification device adopts an 8421 code coding mode, signals can be read by a vehicle-mounted control system, the vehicle-mounted control system calculates the current position of a vehicle through the read information and performs timing,
2) the acquisition of standard time of different displacement sections is completed, and the vehicle-mounted control system acquires the time of passing through each section in the deceleration process of the coke oven locomotive to form standard passing time; in production, real time of passing each section is collected and recorded in real time, standard passing time of the section is compared, if the time difference is large, speed abnormity is indicated, and an alarm signal is output;
3) the automatic protection of abnormal speed is realized, after the vehicle-mounted control system automatically confirms that the speed is abnormal, the vehicle-mounted control system automatically performs deceleration or sudden stop protection according to a set protection method, and accidents caused by abnormal speed of the locomotive are avoided.
As an improvement of the invention, the vehicle-mounted control system consists of two parts, namely ground equipment and on-board equipment, wherein the ground equipment is arranged at fixed points along the running direction of the locomotive and comprises a ground support and a transmitting device, the transmitting device is arranged on the ground support according to the rule of 8421 codes, the on-board equipment 4 is arranged on the locomotive and comprises an on-board support and a receiving device, and the receiving device is arranged on the on-board support according to the rule of 8421 codes and is consistent with the corresponding transmitting device of the ground equipment in height. Reliable reception of signals is ensured without interference.
As an improvement of the invention, the vehicle equipment of the displacement identification device comprises N pieces of information receiving equipment which are vertically arranged on a bracket, and at most 2 pieces of information receiving equipment can be arranged on the groundN-1 on-ground device.
As an improvement of the invention, the vehicle equipment of the displacement identification device comprises 3 pieces of information receiving equipment which are vertically arranged on a bracket, and the information receiving equipment can be arranged on the ground at most 231 ground equipment, the transmitting equipment of the ground equipment is also vertically arranged on a bracket according to 8421 code sequence and is arranged in the sequence of 001, 010, 011 and 100, 0 represents that no transmitting equipment exists at the position, 1 represents that the transmitting equipment exists at the position, 3 receiving equipment of the vehicle equipment corresponds to 3 positions of the transmitting equipment of the ground equipment, when the vehicle moves, the vehicle equipment in the displacement identification device moves along with the vehicle and sequentially passes through the ground equipment, the receiving equipment of the vehicle equipment senses signals transmitted by the transmitting equipment of different ground equipment, and the vehicle-mounted control system judges the position where the vehicle arrives according to the read signals to finish displacement identification.
Compared with the prior art, the invention has the advantages that 1) the technical scheme can automatically acquire standard time, and under the condition that the equipment state is normal, the vehicle-mounted control system can record the time that a vehicle normally passes through the interval between two adjacent ground equipment; 2) the technical scheme can implement wide-range protection at the tail end of the vehicle operation area. Because of adopting the encoding mode of 8421 codes, the number of the ground equipment can be doubled when the vehicle equipment is added with one receiving device, thereby expanding the protection area; 3) the technical scheme realizes automatic judgment of abnormal speed. The characteristic that the coke oven locomotive circularly operates and the deceleration interval is constant is utilized, the vehicle-mounted control system replaces manual work to judge the abnormal speed, so that the labor load of the manual work is reduced, the judgment standard is well documented, and the reliability is improved; 4) the system has the advantages of simple structure, convenience in manufacturing and installation, simple and reliable speed abnormity judgment principle, convenience in mastering by maintainers, low cost and convenience in further popularization and application.
Drawings
FIG. 1 is a schematic view of a coke oven locomotive running system;
FIG. 2 is a view of the displacement marker structure;
FIG. 3 is a schematic diagram of the operation of the displacement marking device;
FIG. 4 is a control flow diagram for detecting and controlling abnormal speed of the locomotive;
wherein 1-locomotive track; 2-locomotive head; 3-vehicle wheels; 4-displacing the on-board equipment in the identification device; 5-an induction device of the on-board equipment; 6-displacement of ground equipment in the identification device; 7-a transmitting device of the ground equipment; 8-vehicle control system; the a-1# displacement marks the contraposition state; b-2# displacement identification alignment state; the c-15# displacement identifies the alignment state.
The specific implementation mode is as follows:
for the purpose of enhancing an understanding of the present invention, the present embodiment will be described in detail below with reference to the accompanying drawings.
Example 1: referring to FIG. 1, a method of detecting and controlling abnormal speed of a coke oven locomotive, the method comprising: 1) the displacement identification device is arranged in a vehicle deceleration area, the code of the displacement identification device adopts an 8421 code coding mode, signals can be read by a vehicle-mounted control system, the vehicle-mounted control system calculates the current position of a vehicle through the read information and performs timing, the displacement identification device is shown in figure 2, the vehicle-mounted control system consists of ground equipment and on-board equipment, the ground equipment is arranged at fixed points along the running direction of the locomotive and comprises a ground support and a transmitting device 7, the transmitting device is arranged on the ground support according to the 8421 code rule, the on-board equipment 4 is arranged on the locomotive and comprises an on-board support and a receiving device, and the receiving device is arranged on the on-board support according to the 8421 code rule and is consistent with the corresponding transmitting device of the ground equipment in height, so that reliable receiving of the signals is guaranteed, and interference is not formed. The on-vehicle equipment of the displacement identification device comprises N pieces of trusted equipment which are vertically arranged on a bracket, and the maximum trusted equipment can be arranged onFloor installation 2N-1 on-ground device. In the technical scheme, the vehicle equipment of the displacement identification device comprises 3 pieces of trusted equipment which are vertically arranged on a bracket, and at most 2 pieces of trusted equipment can be arranged on the ground 31 ground equipment, the transmitting equipment of the ground equipment is also vertically arranged on a bracket according to 8421 code sequence and is arranged in the sequence of 001, 010, 011 and 100, 0 represents that no transmitting equipment exists at the position, 1 represents that the transmitting equipment exists at the position, 3 receiving equipment of the vehicle equipment corresponds to 3 positions of the transmitting equipment of the ground equipment, when the vehicle moves, the vehicle equipment in the displacement identification device moves along with the vehicle and sequentially passes through the ground equipment, the receiving equipment of the vehicle equipment senses signals transmitted by the transmitting equipment of different ground equipment, and the vehicle-mounted control system judges the position where the vehicle arrives according to the read signals to finish displacement identification.
2) The acquisition of standard time of different displacement sections is completed, and the vehicle-mounted control system acquires the time of passing through each section in the deceleration process of the coke oven locomotive to form standard passing time; in production, the actual time passing through each section is collected and recorded in real time, the standard passing time of the section is compared, if the time difference is large, the speed is abnormal, and an alarm signal is output.
3) The automatic protection of abnormal speed is realized, after the vehicle-mounted control system automatically confirms that the speed is abnormal, the vehicle-mounted control system automatically performs deceleration or sudden stop protection according to a set protection method, and accidents caused by abnormal speed of the locomotive are avoided. The technical scheme can automatically judge whether the current speed is abnormal in real time according to the running condition of the coke oven locomotive, and automatically control the abnormal speed, so that the four major coke ovens can run safely at high speed. The abnormal speed detection device can automatically judge whether the running vehicle has the problem of abnormal speed, the key point is to judge whether the speed exceeds a normal value, and the speed control method is to automatically take control measures to stop the vehicle running at high speed in time after judging that the current speed exceeds the limit, so as to avoid the out-of-control speed.
Application example and working principle:
referring to fig. 1-4, the coke pushing operation production of the coke oven has the characteristics of continuity and cyclicity, the vehicles are circularly discharged according to a set production plan, in the coke discharging operation production of a group of coke ovens with 120 holes and 2-1 sequence, the coke discharging operation plan is circularly developed according to the sequence of a No. 1 carbonization chamber, a No. 3 carbonization chamber … 119 carbonization chamber, a No. 2 carbonization chamber and a No. 4 carbonization chamber … 120 carbonization chamber, and the coke oven locomotive is circularly and repeatedly moved in different carbonization chambers, coal tower coal discharge positions and dry quenching areas. However, during normal acceleration, speed stabilization and deceleration running of the locomotive, the time for passing a certain area should be fixed, for example, when the locomotive starts to decelerate from 100% speed at a position one hundred meters away from the target, the time for passing the interval of 100 meters and 90 meters away from the end point should be 3 seconds, the time for passing the interval of 90 meters and 80 meters away from the end point should be 4 seconds, and the time for passing the interval of 80 meters and 70 meters away from the end point should be 5 seconds …. Therefore, whether the speed is abnormal or not can be automatically judged by means of the detection equipment and the control method, the detection equipment comprises a displacement identification device and an on-board control system, the displacement identification device comprises a ground device and an on-board device, and the purpose is to enable a locomotive provided with the on-board device to read information of the ground device when passing through the ground device so as to identify absolute value address information of the locomotive. The vehicle-mounted control system is connected with the on-board equipment, receives information of the ground equipment, records the current time when the vehicle passes through the ground equipment, records the current time again when the vehicle passes through another adjacent ground equipment, and can calculate the time passing through the interval of the two adjacent ground equipment by subtracting the time, thereby realizing the judgment of whether the speed is normal or not.
In the application embodiment, taking the example that an electric locomotive produces and discharges from a 120-hole coke oven according to a 2-1 process, the electric locomotive operates in a reciprocating mode and circularly discharges from a No. 1 carbonization chamber, a No. 3 carbonization chamber … 119, a No. 2 carbonization chamber, a No. 4 carbonization chamber … 120 and a dry coke quenching area according to a production plan. Although the running distance of each carbonization chamber is different in each cycle, the running strategy of the deceleration is the same, for example, when the distance measuring device detects that the current distance is 80 meters and starts to decelerate, the speed given by the speed setting device is reduced to 80% of the maximum speed, when the current distance is 50 meters and detects that the current distance is 50 meters, the given speed is reduced to 50% of the maximum speed, and so on, because the address detection device and the speed setting device cannot work reliably, such as the fault of the address detection device or the sampling error, it may happen that when the current distance is 50 meters and detects that the current distance is 50 meters, the set speed is reduced to 50%, but the actual speed of the vehicle is 70% of the maximum speed, so that the overspeed operation of the vehicle is caused, and the production accident is caused. Therefore, a displacement identification device is required to be installed in a locomotive deceleration area, so that the vehicle can detect abnormal speed in time and take protective measures to avoid accidents.
According to fig. 2, a displacement marking device is designed and manufactured, and the device is divided into two parts, namely ground equipment and vehicle equipment. The ground equipment is arranged at fixed points along the running direction of the locomotive and comprises a ground support and transmitting equipment, and the transmitting equipment is arranged on the ground support according to the rule of 8421 codes. The on-board equipment is arranged on the locomotive and comprises an on-board bracket and a signal receiving equipment, the signal receiving equipment is arranged on the on-board bracket according to the rule of 8421 codes and is consistent with the height of a signal sending device of the on-board equipment, the reliable receiving of signals can be ensured, and no interference is formed. The vehicle-mounted equipment is connected with the vehicle-mounted control system and used for sending the received coding signals to the control system.
According to the installation method shown in fig. 3, when the vehicle moves, the on-vehicle device in the displacement identification device moves along with the vehicle, and sequentially passes through the ground device, the signal receiving device of the on-vehicle device can sense the signal of the signal sending device of the ground device, and the vehicle-mounted control system judges the position where the vehicle arrives according to the read signal, so as to complete displacement identification. Due to the cyclic and fixed characteristics of the coke oven locomotive running, the time X1 when the electric locomotive passes through the interval of 100 meters and 90 meters from the end point in the deceleration process should be 3 seconds, the time X2 when the electric locomotive passes through the interval of 90 meters and 80 meters from the end point should be 4 seconds, and the time X3 when the electric locomotive passes through the interval of 80 meters and 70 meters from the end point should be 5 seconds …, so that the standard passing time is formed by appropriate margin reduction (multiplying X1, X2, X3 and the like by a 0.9 coefficient or reducing by 0.5 seconds and the like). In daily production, the vehicle-mounted control system collects and calculates the time T1, T2, T3 and the like passing through the sections in real time, compares the time with the standard passing time X1, X2, X3 and the like according to the speed detection and control flow shown in FIG. 4, and outputs an alarm signal if the real-time of any comparison is less than the standard time, which indicates that the speed of the locomotive passing through the current section exceeds the normal speed, and adopts a rapid deceleration or emergency braking mode for automatic protection, so that accidents caused by abnormal speed of the locomotive are avoided.
It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent modifications and substitutions based on the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.
Claims (4)
1. A method of detecting and controlling abnormal speed of a coke oven locomotive, the method comprising:
1) a displacement identification device is arranged in a vehicle deceleration area, the code of the displacement identification device adopts an 8421 code coding mode, signals can be read by a vehicle-mounted control system, and the vehicle-mounted control system calculates the current position of a vehicle according to the read information and performs timing;
2) the acquisition of standard time of different displacement sections is completed, and the vehicle-mounted control system acquires the time of passing through each section in the deceleration process of the coke oven locomotive to form standard passing time; in production, real time collecting and recording the actual time passing through each section, comparing the actual time with the standard passing time of the section, if the time difference is larger, indicating that the speed is abnormal, and outputting an alarm signal;
3) the automatic protection of abnormal speed is realized, after the vehicle-mounted control system automatically confirms that the speed is abnormal, the vehicle-mounted control system automatically performs deceleration or sudden stop protection according to a set protection method, and accidents caused by abnormal speed of the locomotive are avoided.
2. The method of claim 1, wherein the displacement identification means comprises two parts, the ground equipment is located at a fixed point along the running direction of the locomotive and comprises a ground support and a transmitting device, the transmitting device is mounted on the ground support according to the rule of 8421 codes, the on-board equipment is mounted on the locomotive and comprises an on-board support and a receiving device, and the receiving device is mounted on the on-board support according to the rule of 8421 codes and is in height with the corresponding transmitting device of the ground equipment.
3. The method of claim 2 wherein the on-board equipment of the displacement indicator means comprises N on-board units vertically mounted on a rack, up to 2 on the groundN-1 on-ground device.
4. The method of claim 3 wherein the on-board equipment of the displacement indicator means includes 3 signal receiving devices mounted vertically on the rack, up to 2 signal receiving devices mounted on the ground31 ground equipment, the transmitting equipment of the ground equipment is also vertically arranged on a bracket according to 8421 code sequence and is arranged in the sequence of 001, 010, 011 and 100, 0 represents that no transmitting equipment exists at the position, 1 represents that the transmitting equipment exists at the position, 3 receiving equipment of the vehicle equipment corresponds to 3 positions of the transmitting equipment of the ground equipment, when the vehicle moves, the vehicle equipment in the displacement identification device moves randomly and sequentially passes through the ground equipment, the receiving equipment of the vehicle equipment senses signals transmitted by the transmitting equipment of different ground equipment, and the vehicle-mounted control system judges the position where the vehicle arrives according to the read signals to finish displacement identification.
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| CN111061238B (en) * | 2019-12-26 | 2024-01-05 | 远景智能国际私人投资有限公司 | Production safety monitoring method, device, equipment and medium for lithium battery |
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