KR19990061974A - Balance control device and control method for loading raw materials for power generation - Google Patents

Abstract

The present disclosure is to provide a balance control apparatus and a control method for reducing segregation of raw materials in the silo and smooth balance control, when the raw materials such as coal type for power generation are loaded in silos.

To this end, while selecting the inlet portion of the silo 30, forward and backward position detecting means 40 consisting of a plurality of position sensors 42, 44 to move forward and backward repeatedly in the silo 30 when the raw material is loaded; Accumulation amount level detection means 50 consisting of a level detection ultrasonic sensor 52, 54 for overlapping the space of the silo 30 in the left and right both sides of the silo 30 selected by the position detecting means 40. And a control method comprising: selecting a silencing prohibition silo at the same time as selecting the same raw material silo and selecting a moving target silo; A moving step of moving the bogie to the selected silo; To detect the stockpile level by dividing the stockpile of raw materials into four levels of emergency load level (LL), shortage replenishment level (LL), normal load level (H) and excess load level (HH). Accumulation level detection step; A silo moving step of moving the trolley from one side of the horizontal state to the opposite position within the width of the silo inlet after the position movement; There is no silo selection after finishing stocking, and it provides a balance control method including a stop step of sending a stop signal to the conveyor to complete the stocking.

Description

Balance control device and control method for loading raw materials for power generation

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley moving apparatus and a control method for loading raw materials such as coal species for steelmaking or power generation from silos to silos.

Specifically, when the raw material loaded in the yard is loaded through the silo inlet of the high position, it prevents the deflection of the piled up angle generated when the raw material transferred to the conveyor is loaded in several silos, and once the raw material is loaded In addition to the silos of raw material shortages detected as bogies, as well as the supplementary silos of raw materials, the replenishment of raw materials is used to reduce the operation of repetitive bogies, enabling a more smooth bogie control system and a control method for the stockpiles. It is about.

In the related art, as shown in FIGS. 1 and 3A, the conventional raw material loading system is transferred to the trolley 10 through the belt conveyor 20 of FIG. 1 so that the position sensor 40 detects the silo 30. Raw material loading is performed on the selected silos 30. At this time, if the raw material is continuously deposited in the silo 30, when the level measuring sensor 50 indicates the normal (H) level, the loading is stopped, and the next silo is selected and simultaneously moves to the next silo 30 instead of the normal level. If no selection is made, the raw material supply stop signal is sent with the completion of the loading and the raw material supply is stopped. At this time, if the raw material being transported continues to be accumulated and overloaded, an emergency stop signal is sent to stop the upper conveyor.

In addition, since the silo of the trolley control system is composed of one level measuring sensor 50 and one position sensor 40 per silo, the stock silo shape of the raw material does not fill the silo interior as shown in FIG. 3A. Because of the completion of the deposition, the efficiency of use decreases, and depending on the raw material, the deposition angle is large, and the raw material is deposited in a stationary state at one point. Therefore, small particles are accumulated in the center of the silo, and the particles are thick. Raw materials are rolled up and outwards, and the thickness of the particles is unevenly distributed, resulting in poor quality when the raw materials are mixed in the next process.

In addition, since the trolley moved on the silo is detected by one position detecting sensor, the accuracy of position selection is reduced, and even if it is accurately positioned in the center, the center bias phenomenon occurs when the raw material is chucked as described above. As it is located close to the entrance of the silo or the sensing ability of the raw material state at the bottom of the remote silo can not be maintained to maintain the proper raw material loading state. This lowers the problem of having to repeat the operation time of the equipment shortly, which also lowers the efficiency of the equipment.

In order to improve such a problem, it has been required to improve the loading method of bogies for loading raw materials into silos, and also to improve the control structure of existing bogie control systems.

In order to improve such a problem, it has been required to improve the loading method of bogies for loading raw materials into silos, and also to improve the control structure of existing bogie control systems.

The present invention, in view of the problems and necessity of the balance control system for loading the conventional silo raw materials to increase the efficiency of the silo, to properly extend the equipment operating time to improve the efficiency of the equipment, evenly distributed state of the stacked raw materials The purpose of the present invention is to provide a control method for reducing segregation and preventing degradation of product quality of the post-process due to stacked materials.

1 is a block diagram of a conventional balance control system

2 is a block diagram of the balance control system of the present invention

3A is an enlarged schematic sectional view of a main part of a silo showing a state of loading of raw materials of a conventional balance control system;

Figure 3b is an enlarged schematic sectional view of the main part of the silo showing the raw material loading state of the balance control system of the present invention

Figure 4 is a block diagram installation of the present invention balance control device

5 is a schematic diagram showing a repetitive movement state of the present invention truck

6 is a control flowchart of the balance control system of the present invention.

※ Explanation of code for main part of drawing

10: Balance ........... 20: Conveyor

30: Silos ......................... 42, 44: Position sensor

52, 54: Level detection sensor ..... 60: Relay board

70: Programmable Logic Controller ... 80: Computer

In order to achieve the above object, the present invention provides a raw material loading balance control device for inputting raw materials while simultaneously selecting a position while the raw material input truck is moved back and forth over several silos on the conveyor, and the entrance of the silo is provided. Forward and backward position sensing means composed of a plurality of position sensors to repeatedly move forward and backward in the silo while selecting the part; And the raw material amount of the silo is urgently stacked position (LL), insufficient amount replenishment position (L), loading completion position (H) and raw material overflow position, while overlapping the space of the silo from the left and right both sides of the silo selected by the position detecting means. It is achieved as the balance control apparatus for raw material stocking which consists of four or more positions of (HH), and includes a sensing means for measuring the raw material chuck amount for detecting the stock state of the plurality of ultrasonic sensors.

In the method of controlling the raw material loading balance to input the raw materials while moving the raw material loading truck back and forth over several silos on the conveyor, the same raw material silo is selected and the no loading silo is also moved. Selecting a target silo; A moving step of moving the bogie to the selected silo; A retrieval step of detecting whether or not the loading of the raw material is selected from the position of the selected silo by detecting a location divided into four positions of emergency loading position, shortage replenishment position, loading completion position and raw material overflow position; When the loading is finished, the loading of the raw material for a predetermined time after the loading of the raw material detection step of automatically stopping when reaching the complete position of the separated position while detecting the height of the storage; And moving to the next selected silo when raw material loading is completed.

Preferably further comprises a raw material replenishment step for replenishing the raw material after stopping at the silo location where the same raw material and the closest shortage replenishment position (L) of the closest silo is detected during movement to the next silo; It includes a repeating movement step of moving forward and backward repeatedly at a constant speed from the one side bias position in the horizontal state, and moving to the next silo after the raw material loading or moving to the first position after completing the loading of all the silos If there is a raw material overflow position in the position to provide a balance control method further comprising the step of emergency stop in the silo to adjust the overflow amount of raw materials to provide the most ideal balance control method for the purpose of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of the balance control system of the present invention.

The balance control apparatus of the present invention according to these drawings consists of a device for inputting raw materials after selecting a position as a trolley 10 which is advanced back and forth over several silos 30.

More specifically, the present invention is a forward and backward position detecting means 40 composed of a plurality of position sensors 42, 44 in order to repeatedly move forward and backward in the silo 30 when the raw material is loaded while selecting the inlet portion of the silo 30. ) And the raw material amount of the silo 30 is urgently stacked position LL, deficit quantity replenishment position while overlapping the space of the silo 30 from both left and right sides of the silo 30 selected by the position detecting means 40. L), Level detection ultrasonic sensor 52, 54 for level detection completion position (H) and overload position (HH) or more of the overload position (HH) Means 50.

Figure 4 of the accompanying drawings is a block diagram of the balance control device of the present invention.

Each of the sensors 40 and 50 according to the present invention transmits a signal value to the programmable logic controller 70 via the relay board 60, and in the computer 80, the driver designates the same as the moving prohibition silo. The stockpile silos are designated, and the values of the four position levels of the emergency stockpile position LL, the shortage replenishment position L, the stockpile completion position H and the excess stockpile position HH are specified. The choice of this value depends on the length and transport capacity of the conveyor. In addition, the silos to be moved and stowed are selected.

The data set in the computer is sent to the programmable logic controller for automatic operation, and each data can be monitored from the computer.

6 is a control flowchart of the balance control system of the present invention. The process of the present invention according to this flowchart,

At the same time as selecting the same raw material silo and selecting the restraint silo, and selecting the silo to be moved,

When the loading of raw materials begins, the raw materials are transported by a conveyor, and the transferred raw materials select a silo for raw material input as a bogie that is moved back and forth over several silos. That is, the moving step of moving the bogie to the selected silo,

Emergency load level (LL) which is always moved among the four levels of emergency load level (LL), shortage replenishment level (L), loading completion level (H) and excess load level (HH) at the selected silo position. ) Detects and decides whether or not to

Selecting a silo and moving the trolley from one level level sensor position in a horizontal state to the opposite level level sensor within the width of the silo inlet to form a level of raw material almost horizontally;

If the horizontal loading of the raw material is set to the same raw material silos inputted, the step of moving to the adjacent silos of the set silos,

If the next silo is not set, a dispensing stop signal is sent and the two level detection sensors are repeatedly loaded and stored for a predetermined time, and then an emergency stop is made when the excessive accumulation level is reached.

In general, emergency stops do not occur. This is because segregation is suppressed and determined in consideration of the specification of the trolley travel motor.

Meanwhile, as described above, the target silo is maintained at the normal loading level (H), and after completion of raw material loading, the silo position where the shortage replenishment position (L) of the closest silo is detected is stopped and the raw material is stopped. By having the raw material replenishment step to replenish, it is possible to equalize the level of accumulation of all silo raw materials in a single run without having to prioritize the silos in the next loading process.

As described above, the present invention improves the efficiency of silo use by filling the silos with a certain amount and always horizontally by improving the problems such as the occurrence of pile angle, segregation, and the lack of silo raw materials due to the accumulation of the conventional pile position in one silo. As a result, segregation is reduced by uniformly distributing the raw materials, and as a result, the loading time of raw materials is not short as in the prior art, and thus, the conveyor for transporting raw materials and materials is not driven repeatedly. There is an effect to improve, and prevent the degradation of the product quality of the post-process due to the stacked material.

Claims (5)

In the raw material loading balance control device for inputting raw materials while at the same time selecting the position as the raw material input truck advances on several silos by a conveyor, After the entrance of the silo is selected, when the normal level is reached at one position in the silo, the trolley is moved to carry out the loading at the other side and continue to the normal level, so that the loading state of the raw material does not form a central deposition angle. Intra-silo bogie position detection means comprising a plurality of position sensors in the silo to maintain a near-horizontal loading state; And Preset urgent level (LL), deficit quantity replenishment level (L), accumulation level (H) and excess accumulation level (HH), while overlapping the space of the silo from the left and right sides of the silo selected by the balance position detecting means. Raw material loading balance control device comprising a detection means for measuring the raw material loading amount for detecting a plurality of ultrasonic sensors. In the raw material loading balance control method for inputting raw materials while at the same time selecting the position as the raw material input truck is moved back and forth over several silos on a conveyor, A selection step of selecting the same raw material silo, the restraint silo and the moving target silo; A balance movement step of moving the balance while checking whether or not the silo is above the silos to move the balance to the selected silo; While the raw material is loaded at the position of the selected silo, it is continuously determined whether the raw material loading state corresponds to four levels of the emergency loading level (LL), the shortage filling level (LL), the normal loading level (H), and the excess loading level (HH). Raw material loading and level detection step of detecting and loading the raw material while judging; And And a first stop step of sending a stop signal to the conveyor in order to complete the loading without completing the next silo after the loading of the raw material satisfying the loading level is completed. According to claim 2, The raw material loading truck further comprises a raw material replenishment step for replenishing the raw material after stopping at the silo position where the shortage replenishment position (L) of the same raw material and the closest silo is detected while moving to the next silo. Control method. The method of claim 2 or 3, wherein in the loading of the raw material within the width of the silo inlet after moving the position, the unbalanced loading is performed as the sensing state of one level detection sensor, and then the truck is moved to another level detecting sensor position in the silo to move to the storage level. The method of controlling the load for generating raw materials for power generation further comprising the step of moving in the silo to prevent the raw material accumulation in the silo from forming the central loading angle due to the two-sided loading. The method according to claim 2, further comprising the step of emergency stopping of the loading state of the truck at the moment when the amount of raw material reaches the excess silo state after stopping the transfer of the raw material of the conveyor due to the absence of moving to the next silo after completing the loading of the raw material. Balance control method for loading raw materials for power generation.