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CN-121992162-A - Control system and method for ore coke tank and feeding system

CN121992162ACN 121992162 ACN121992162 ACN 121992162ACN-121992162-A

Abstract

The invention relates to a control system of a coke tank and a feeding system, which belongs to the field of ferrous metallurgy and comprises a production decision system, a flow control system and an equipment control system, wherein the production decision system carries out batching calculation, automatic adjustment of a discharging sequence is carried out according to mixing requirements, a feeding bill is generated and sent to the flow control system, flow information and equipment states are read in real time, the flow control system selectively reads the feeding bill sent by the production decision system or the feeding bill manually set locally, analyzes the read feeding bill, carries out error compensation and other calculations to obtain an execution weighing bill, carries out a material preparation flow, tracks the real-time position of materials through a material flow simulation algorithm, carries out the discharging flow according to the discharging sequence, carries out real-time broadcasting flow state, carries out abstract refinement on control object attributes, realizes standardized control of automatic operation of equipment and carries out real-time broadcasting on the equipment operation states. Also comprises a matched control method.

Inventors

  • JIANG ZIWEI
  • ZHANG TAO
  • LIAO ZHIPING
  • CHEN HONG
  • ZOU JIAN
  • PAN QIHAO

Assignees

  • 中冶赛迪工程技术股份有限公司

Dates

Publication Date
20260508
Application Date
20260119

Claims (9)

  1. 1. A control system of a coke tank and a feeding system is characterized by comprising a production decision system, a flow control system and an equipment control system; The production decision system is used for carrying out batching calculation according to the material name, the material level, the equipment state and the tapping requirement of the material bin of the ore coke tank, carrying out automatic adjustment of the discharging sequence according to the mixing requirement, generating a feeding bill, issuing the feeding bill to the flow control system, and reading flow information and equipment state in real time; The flow control system is used for selectively reading a feeding bill issued by the production decision system or a local manually set feeding bill, analyzing the read feeding bill, and obtaining an execution weighing bill through moisture and error compensation calculation; executing a material preparation flow, tracking the real-time position of the material through a material flow simulation algorithm, executing the material discharge flow according to the material discharge sequence, broadcasting the flow state in real time, and simultaneously tracking the material flow information in real time; The equipment control system is used for abstracting and refining the attribute of the control object, realizing the standardized control of the automatic operation of the equipment and broadcasting the operation state of the equipment in real time.
  2. 2. A control method of a ore coke tank and a feeding system is characterized by comprising the following steps: Step 1, a production decision system establishes a loading expert system model, and generates a dynamic loading bill and a production report according to a model algorithm; step 2, the production decision system issues a dynamic feeding list to an L2 feeding list buffer area of the flow control system; Step 3, the flow control system reads an L2 feeding bill issued by the production decision system or an L1 feeding bill manually set according to production requirements, and transmits the L2 feeding bill to the feeding execution matrix in real time according to an L2 control instruction or an L1 operation instruction; Step 4, the flow control system analyzes the feeding bill, searches a weighing bill array to be executed from the weighing bill array according to the execution period array and the feed preparation pointer, decomposes the weighing bill array to obtain the feed preparation set weight of each bin, obtains a feed preparation target value through error compensation calculation, and executes a feed preparation flow according to the feed preparation target value; Step 5, the flow control system analyzes the feeding bill, searches a to-be-executed discharging sequence array from a weighing bill discharging sequence matrix according to the executing period array and the discharging pointer, executes a discharging flow according to the set discharging sequence and the discharging speed, generates a simulated material flow array according to a simulated material flow algorithm, and completes the transmission of batch information of a furnace top system and the dynamic display of a feeding flow of a conveying belt through the progressive of the simulated material flow array; and 6, the equipment control system reads the information of the material preparation flow and the material discharge flow in real time, and realizes the operation control and the state monitoring of the single equipment according to the received flow execution instruction.
  3. 3. The method for controlling the ore coke tank and the feeding system according to claim 2, wherein in step 1, the feeding expert system model collects ore Jiao Caocang material level, bin material class, bin equipment state, blast furnace tapping component analysis and blast furnace production plan information in real time, calculates the bin material proportion by expert algorithm, generates weighing bill, generates optimal discharging sequence according to the combination of three discharging modes of forward discharging, reverse discharging and stacking, realizes continuous and ideal mixing effect of material flow, and dynamically adjusts the preparation discharging period according to the production plan by a bill change instruction control word.
  4. 4. The method for controlling a coke tank and a feeding system according to claim 2, wherein in step2, the L2 feeding single buffer zone of the flow control system comprises: weighing bill matrix MenuPreL < 2 > = Wherein n is the number of bins, and m is the number of materials; Discharge order matrix OrderPreL2 = Wherein n is the number of bins, i is the number of discharge sequence types; The array CYCLEPREL of the standby discharging period [1:N ], N is the number of the most materials which can be called in a single execution period; bill change instruction control word.
  5. 5. The method of claim 2, wherein in step 3, the L2 feeding bill or L1 feeding bill read by the flow control system comprises weight setting, discharging sequence setting and standby discharging period setting of each bin; the weight setting of each bin is to manually set the weight of each bin or set the total weight of each material, and then automatically distribute the weight according to the state of each bin; the setting of the middle discharging sequence comprises freely setting the discharging sequence of each bin for each material preparation; The execution cycle setting includes setting the material preparation of each batch and the circulation sequence of each material preparation in the cycle, and setting additional batches for emergency insertion coke charge or ore batches during execution.
  6. 6. The method for controlling a coke tank and a feeding system according to claim 5, wherein the step 3 comprises the following steps: 31 Building a weight bill matrix menu= And L1 preset weight bill matrix MenuPreL1 = According to the combination judgment of the L2 feeding bill change instruction or the L1 operation instruction, if the L2 feeding bill is selected to be executed, the matrix MenuPreL is assigned to the matrix Menu, and if the L1 feeding bill is selected to be executed, the matrix MenuPreL1 is assigned to the matrix Menu; 32 Building an Order matrix order=for performing the discharge And L1 preset discharge sequence matrix OrderPreL1 = Judging elements in an L2 preset discharging sequence matrix OrderPreL and an L1 preset discharging sequence matrix OrderPreL, judging according to an L2 bill change instruction or an L1 operation instruction combination, if an L2 bill is selected for execution, assigning a matrix OrderPreL2 to a matrix Order, and if an L1 bill is selected for execution, assigning a matrix OrderPreL1 to the matrix Order; 33 The method comprises the steps of) establishing a standby discharging period array Cycle [1:N ] and an L1 preset discharging period array CYCLEPREL [1:N ], wherein N is the maximum material preparation number which can be called by a single execution period, judging the elements in an L2 preset discharging period array CycleL and an L1 preset discharging period array CycleL1, judging according to an L2 material single change instruction or an L1 operation instruction combination, assigning an array CycleL2 to the array Cycle if the L2 material single execution is selected, and assigning an array CycleL1 to the array Cycle if the L1 material single execution is selected.
  7. 7. The method for controlling a coke tank and a feeding system according to claim 2, wherein the step 4 comprises the following steps: 41 When initialization or after the preparation of the front batch is finished, searching for a preparation pointer, if the preparation pointer is in a normal period, reading a bill in the normal period, if the preparation pointer is in an additional batch period, reading the bill in the additional batch period, and if the preparation pointer is not in the normal period or the additional batch period, re-searching for an execution period; 42 According to the weight set value in the material preparation pointer reading material list, carrying out water and error compensation calculation to obtain a material preparation target value; 43 According to the target material preparation value, a material preparation process is executed, wherein the material preparation process comprises ore, auxiliary materials and coke.
  8. 8. The method for controlling a coke tank and a feeding system according to claim 2, wherein the step 5 comprises the following steps: 51 Resetting the discharge flag bit after the current batch is discharged, resetting the discharge weight set value, and starting to search for a discharge pointer, wherein if the discharge pointer is in a normal period, the discharge pointer reads a material bill in the normal period, if the discharge pointer is in an additional batch period, the discharge pointer reads a material bill in the additional batch period, and if the discharge pointer is not in the normal period or the additional batch period, the execution period is searched again; 52 Reading the discharging weight and the discharging sequence according to the material list corresponding to the found discharging pointer; 53 According to the discharging weight and the discharging sequence, executing a discharging process, wherein the steps of the discharging process are as follows: ① When a discharging batch is ready, searching a first weighing hopper for discharging and a next weighing hopper for discharging according to a set discharging sequence; ② After receiving the discharging signal and meeting the discharging condition, the first weighing hopper starts to discharge, and according to the discharging speed of the current weighing hopper, the position of the weighing hopper to be discharged next is calculated, the time for the next weighing hopper to start to discharge is calculated, and the discharging is started when the condition is met; ③ Sequentially discharging according to the discharging sequence until all the batch materials are discharged; ④ Counting batch weight, material seeds, material making information and transmitting the batch weight, the material seeds and the material making information to the furnace top.
  9. 9. The control method of the ore coke tank and the feeding system according to claim 2, wherein in the step 6, the control flow of the weighing hopper equipment is as follows: 61 Judging whether the set value of the stock of the weighing hopper is larger than 0, if so, judging whether the target value of the stock of the weighing hopper after error compensation and moisture compensation is larger than 0; 62 If the target material preparation value of the weighing hopper is greater than 0 and the weighing hopper gate is closed in place, starting the vibrating screen when the weighing hopper is put into use; 63 Starting the feeding machine, starting feeding, stopping the feeding machine and the vibrating screen after the weight of the weighing hopper reaches the target material preparation value or the maximum value of the weighing hopper, and filling the weighing hopper; 64 If the feeding belt conveyor runs and the feeding machine and the vibrating screen do not run, the weighing hopper allows discharging, and the weighing hopper is required to be discharged, the gate is opened, and discharging to the feeding belt conveyor is started.

Description

Control system and method for ore coke tank and feeding system Technical Field The invention belongs to the technical field of ferrous metallurgy, and relates to a control system and a control method of a ore coke tank and a feeding system. Background In the blast furnace ironmaking process, a coke tank and a feeding system are core links for guaranteeing accurate raw material supply, and the control efficiency of the coke tank and the feeding system directly affects the stability, the production quality and the energy consumption level of the blast furnace. The traditional coke tank and feeding control system can basically realize automatic control of material preparation and material discharge, the independent complete PLC/DCS control system is used for controlling the coke tank and the material discharge, the information island phenomenon is outstanding, under the condition of blast furnace condition adjustment or emergency, the experience of production management personnel such as industry and elongation is generally relied on, rough material proportion is set, a material change instruction is transmitted to a feeding operation area by the industry and elongation area, the material list is manually changed by the feeding operation personnel, delay and error exist in the process, the high-efficiency cooperation of the feeding system and the blast furnace area and the fine production requirement of the blast furnace cannot be met, the accurate dynamic error compensation cannot be realized for the material preparation in the traditional control method, the material discharge mode is single, the requirements of continuous material flow and full uniform mixing of various materials cannot be met, the flow control and equipment control of the traditional control system are cured, the traditional control system cannot adapt to diversified coke tank arrangement and working conditions, the system is poor in expandability, and the system is quite difficult to modify. Disclosure of Invention In view of the above, the present invention aims to provide a control system and a method for a coke tank and a feeding system. In order to achieve the above purpose, the present invention provides the following technical solutions: in one aspect, the invention provides a control system of a ore coke tank and a feeding system, which comprises a production decision system, a flow control system and an equipment control system; The production decision system is used for carrying out batching calculation according to the material name, the material level, the equipment state and the tapping requirement of the material bin of the ore coke tank, carrying out automatic adjustment of the discharging sequence according to the mixing requirement, generating a feeding bill, issuing the feeding bill to the flow control system, and reading flow information and equipment state in real time; The flow control system is used for selectively reading a feeding bill issued by the production decision system or a local manually set feeding bill, analyzing the read feeding bill, and obtaining an execution weighing bill through moisture and error compensation calculation; executing a material preparation flow, tracking the real-time position of the material through a material flow simulation algorithm, executing the material discharge flow according to the material discharge sequence, broadcasting the flow state in real time, and simultaneously tracking the material flow information in real time; The equipment control system is used for abstracting and refining the attribute of the control object, realizing the standardized control of the automatic operation of the equipment and broadcasting the operation state of the equipment in real time. On the other hand, the invention provides a control method of a ore coke tank and a feeding system, which comprises the following steps: Step 1, a production decision system establishes a loading expert system model, and generates a dynamic loading bill and a production report according to a model algorithm; step 2, the production decision system issues a dynamic feeding list to an L2 feeding list buffer area of the flow control system; Step 3, the flow control system reads an L2 feeding bill issued by the production decision system or an L1 feeding bill manually set according to production requirements, and transmits the L2 feeding bill to the feeding execution matrix in real time according to an L2 control instruction or an L1 operation instruction; Step 4, the flow control system analyzes the feeding bill, searches a weighing bill array to be executed from the weighing bill array according to the execution period array and the feed preparation pointer, decomposes the weighing bill array to obtain the feed preparation set weight of each bin, obtains a feed preparation target value through error compensation calculation, and executes a feed preparation flow according to the feed preparation target value; Step 5,