CN102534079A - Auxiliary device of blast furnace for blast furnace tapping and taphole blockage - Google Patents

Abstract

The invention belongs to the field of ironmaking equipment, and relates to a blast furnace iron opening machine with a detection and prediction system and a blast furnace auxiliary device of a hydraulic mud gun. The encoder pulse, flow signal and oil pressure signal of the two pressure transmitters detected by the blast furnace front taphole machine and the mud gun are sent to the on-site PLC, and then uploaded to the computer by the PLC. Through the comprehensive analysis and processing of the data, the computer obtains the current accurate working parameters such as the depth of the tapping hole, the amount of dredging, the time of tapping, and the time of dredging, and predicts the depth of the next tapping hole and the amount of dredging through numerical calculation. The terminal is connected to the monitor to guide the on-site operators to work. On the premise of accurately measuring the depth of tapping hole and the amount of mud knocking, the system gives the prediction reference value of the next tapping hole depth and mud tapping amount to guide the site by comprehensively considering the diameter of the drill bit, tapping time process, and working condition parameters Production operation, to achieve the stability of the depth of the taphole and the amount of sludge, which is of great significance to the smooth production and longevity of the blast furnace.

Description

A blast furnace auxiliary device for tapping and plugging the taphole of a blast furnace

technical field

The invention belongs to the field of ironmaking equipment, and relates to a blast furnace auxiliary device of a taphole machine for blast furnace ironmaking and a hydraulic mud gun with a detection and prediction system.

Background technique

The tap hole machine and the mud gun are the key equipment for blast furnace tapping and plugging the tap hole respectively. Existing taphole machine does not have any online detection device except that the taphole depth indicating dial is provided. Because the smoke, dust and flames ejected from the iron hole blocked the line of sight, it was almost impossible to see the scene clearly. The production operators could only rely on experience to estimate the depth of the iron hole. Existing mud cannons are all equipped with detection devices for the amount of mud knocking, such as (1) the blast furnace hydraulic cannon dredging device disclosed in the Chinese patent with the announcement number CN201060456Y; (2) CN The Chinese patent of 102021258A; (3) the Chinese patent of CN87208510U in which the four-bar mechanism indicates the stroke of the oil cylinder to indicate the amount of sludge; These detection devices, especially the detection device of the amount of mud thrown by the mud gun, have been able to measure the working state of the equipment more accurately. However, in the actual operation process, due to the different working conditions (such as the size of the taphole, tapping time, etc.), it is difficult for the on-site operators to accurately grasp the depth of the taphole and the amount of dredging, resulting in excessive dredging. Too much or too little, and the opening depth is unstable, which will have an adverse effect on the smooth production and longevity of the blast furnace.

Contents of the invention

The purpose of the present invention is to solve the problems of too much or too little dredging volume and unstable opening depth in the existing blast furnace auxiliary equipment, and provide a reliable detection performance, high precision, and can be used to open the taphole machine, mud gun, etc. The blast furnace auxiliary equipment that processes and analyzes the measured data and gives the operator a reference.

A blast furnace auxiliary device for tapping and blocking the taphole of a blast furnace, which is characterized by a mud cannon to beat a mud cylinder 1, a first pipeline shut-off valve 2-1, a second pipeline shut-off valve 2-2, a third pipeline Stop valve 2-3, high-pressure flow meter 3, oil pressure transmitter for mud cannon and mud cylinder inlet 4, sensor data line 5, taphole machine advance and retreat motor 6, taphole machine advance and retreat motor oil pressure pressure transmitter Device 7, encoder 8, high temperature resistant data line 9, industrial PLC10, computer 11, and operation site display device 12 constitute. The two ends of the high-pressure flowmeter 3 are provided with a first pipeline stop valve 2-1 and a second pipeline stop valve 2-2, which are used to cut off the oil circuit when the high-pressure flowmeter 3 is not working, and the high-pressure flowmeter 3 passes through the first pipeline. The road cut-off valve 2-1 is connected with the mud cylinder 1, and the other end is connected with the oil inlet oil pressure transmitter 4 of the mud gun mud cylinder through the second pipeline cut-off valve 2-2. The other end of the oil pressure transmitter 4 of the mud cannon and mud cylinder is connected to the mud cylinder 1 through the third pipeline cut-off valve 2-3, and the third pipeline shut-off valve 2-3 is in the It is closed, and it is opened when it is not working, so as to ensure the normal operation of the mud cannon. The taphole machine advance and retreat motor 6 is connected with the taphole machine advance and retreat motor oil pressure pressure transmitter 7. Industrial PLC10 is connected with high-pressure flow meter 3, oil pressure transmitter 4 for oil inlet of mud cannon and mud cylinder, oil pressure transmitter 7 and encoder 8 for the advance and retreat motor of the taphole machine. The calculation result of the computer 11 is displayed on the display device 12 at the operation site. The encoder pulse and flow signal and the oil pressure signal of the two pressure transmitters detected by the blast furnace front taphole machine and the mud gun are sent to the on-site PLC, and then uploaded to the computer by the PLC. Through the comprehensive analysis and processing of the data, the computer obtains the current accurate working parameters such as the depth of the taphole, the amount of dredging, the time of tapping, and the time of dredging, and predicts the depth of the next taphole and the amount of dredging through numerical calculations. The terminal is connected to the monitor to guide the on-site operators to work.

A blast furnace auxiliary device for blast furnace tapping and blocking taphole of the present invention improves measurement accuracy through multi-sensor data fusion (adding equipment oil pressure signal); on the premise of accurately measuring taphole depth and mud volume Next, by comprehensively considering the diameter of the drill bit, tapping time process, and working condition parameters, the system gives the prediction reference value of the depth of the next tap hole and the amount of dredging to guide on-site production operations, so as to realize the optimization of the depth of the tap hole and the amount of dredging Stable, which is of great significance to the smooth production and longevity of the blast furnace.

Description of drawings

Below in conjunction with accompanying drawing, a kind of blast furnace auxiliary device for blast furnace tapping and plugging tap hole of the present invention will be further described.

Fig. 1 is a schematic structural view of a blast furnace auxiliary device for tapping and blocking the taphole of the present invention.

In the figure 1. Mud cannon and mud cylinder, 2-1. The first pipeline cut-off valve, 2-2. Second pipeline cut-off valve, 2-3. The third pipeline cut-off valve, 3. High pressure flowmeter, 4. Mud cannon mud cylinder oil inlet pressure transmitter, 5. Sensor data line, 6. Taphole machine forward and backward motor, 7. Taphole machine Advance and retreat motor hydraulic pressure transmitter, 8. Encoder, 9. High temperature resistant data line, 10. Industrial PLC, 11. Computer, 12. Operation site display device.

Detailed ways

Example 1

The blast furnace auxiliary device used for blast furnace tapping and plugging taphole of the present embodiment is as shown in Fig. Pipeline shut-off valve 2-2, third pipeline shut-off valve 2-3, high-pressure flow meter 3, mud cannon mud cylinder inlet oil pressure transmitter 4, sensor data line 5, tap hole machine forward and backward motor 6 , Open the taphole machine forward and backward motor oil pressure pressure transmitter 7, encoder 8, high temperature resistant data line 9, industrial PLC10, computer 11, and 12 operation site display devices. The two ends of the high-pressure flowmeter 3 are provided with a first pipeline stop valve 2-1 and a second pipeline stop valve 2-2, which are used to cut off the oil circuit when the high-pressure flowmeter 3 is not working, and the high-pressure flowmeter 3 passes through the first pipeline. The road cut-off valve 2-1 is connected with the mud cylinder 1, and the other end is connected with the oil inlet oil pressure transmitter 4 of the mud gun mud cylinder through the second pipeline cut-off valve 2-2. The other end of the oil pressure transmitter 4 of the mud cannon and mud cylinder is connected to the mud cylinder 1 through the third pipeline cut-off valve 2-3, and the third pipeline shut-off valve 2-3 is in the It is closed, and it is opened when it is not working, so as to ensure the normal operation of the mud cannon. The taphole machine advance and retreat motor 6 is connected with the taphole machine advance and retreat motor oil pressure pressure transmitter 7. Industrial PLC10 is connected with high-pressure flow meter 3, oil pressure transmitter 4 for oil inlet of mud cannon and mud cylinder, oil pressure transmitter 7 and encoder 8 for the advance and retreat motor of the taphole machine. The calculation result of the computer 11 is displayed on the display device 12 at the operation site.

During the dredging operation, the mud cylinder stroke is calculated by calculating the flow rate flowing through the high-pressure flowmeter 3 of the mud tank inlet pipeline, and the mud volume is indirectly obtained, which is combined with the oil pressure of the pressure transmitter 4 of the mud tank inlet pipeline. The signal change calculates the mud blowing depth.

During the operation of the iron hole, the drilling depth of the iron hole machine is measured by the encoder 8, and the pulse change rate of the encoder and the oil pressure signal of the oil pressure transmitter 7 of the advance and retreat motor pipeline of the iron hole machine are integrated, which is accurate. Calculate the tap depth.

The working condition signal measured on site is sent to the computer through the industrial PLC10, and the calculation of real-time dredging amount, predicted dredging amount, real-time tapping hole depth and predicted tapping hole depth is completed in the supporting software. The calculation results are output to the display device 12 in the operating room through the computer to guide the on-site operators to work.

Example 2

An encoder is used to replace the high-pressure flowmeter 3 in Embodiment 1 to measure the stroke of the mud cylinder, and other components and functions remain unchanged. Its advantages are: (1) The encoder directly measures the stroke of the mud cylinder to calculate the mud volume more accurately, avoiding the error caused by the high-pressure flowmeter 3 in the case of oil leakage in the pipeline and oil cylinder; (2) The encoder is more accurate. High pressure flow meters are much lower in price, resulting in lower overall installation costs.

Example 3

In the case that there is no input terminal available in the on-site industrial PLC, the industrial PLC 10 in Embodiment 1 is replaced by a digital acquisition card, a single-chip microcomputer or other central processing units to realize data transmission, and other components and functions remain unchanged.

Claims (5)

1. blast furnace casting and the blast furnace supplementary unit that stops up iron mouth usefulness is characterized in that playing mud cylinder (1) by clay gun the first pipeline stopping valve (2-1); The second pipeline stopping valve (2-2), the 3rd pipeline stopping valve (2-3), high-pressure flowmeter (3), clay gun is made mud cylinder oil-feed oil pressure pressure unit (4), sensing data line (5); Iron perforater advance and retreat motor (6), iron perforater advance and retreat motor oil pressure pressure transmitter (7), scrambler (8); High temperature resistant data line (9); Industrial PLC (10), computingmachine (11), operation site display unit (12) constitutes; High-pressure flowmeter (3) two ends are provided with the first pipeline stopping valve (2-1) and the second pipeline stopping valve (2-2); Cut off oil circuit when being used for high-pressure flowmeter (3) off working state; High-pressure flowmeter (3) links to each other with mud cylinder (1) through the first pipeline stopping valve (2-1), and the other end is made mud cylinder oil-feed oil pressure pressure unit (4) through the second pipeline stopping valve (2-2) and clay gun and linked to each other.

2. clay gun is beaten mud cylinder oil-feed oil pressure pressure unit (4) the other end and is linked to each other with mud cylinder (1) through the 3rd pipeline stopping valve (2-3); The 3rd pipeline stopping valve (2-3) is in when high-pressure flowmeter (3) working order closes; From opening, guarantee the clay gun works better during off working state; Iron perforater advance and retreat motors (6) link to each other with iron perforater advance and retreat motor oil pressure pressure transmitters (7); Industrial PLC (10) connects high-pressure flowmeter (3), clay gun is made mud cylinder oil-feed oil pressure pressure unit (4), iron perforater advance and retreat motor oil pressure pressure transmitter (7) and scrambler (8); Computingmachine (11) and industrial PLC (10); The calculation result of computingmachine (11) manifests in operation site display unit (12); Through the data fusion of transmitter, draw the real-time tapping outlet degree of depth and clay gun accurately and beat the mud amount, and according to the known tapping outlet degree of depth with beat the predictor that the mud amount provides next operation.

3. a kind of blast furnace casting according to claim 1 and the blast furnace supplementary unit that stops up iron mouth usefulness is characterized in that replacing the blast furnace under meter with scrambler.

4. a kind of blast furnace casting according to claim 1 and the blast furnace supplementary unit that stops up iron mouth usefulness, its characteristic is adopted the PLC in card, micro-chip or the replacement of other cpus with number.

5. a kind of blast furnace casting according to claim 1 and the blast furnace supplementary unit that stops up iron mouth usefulness, it is characterized in that: the data line of iron perforater scrambler to industrial PLC is high temperature resistant data line.

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