CN217026013U - Automatic control device for bottom blowing oxygen refining ferrosilicon gas - Google Patents

Abstract

The utility model provides an automatic control device for refining ferrosilicon gas by bottom blowing oxygen, which comprises an air blowing pipe, wherein one end of the air blowing pipe is connected with two groups of air transmission pipelines, each air transmission pipeline comprises an air transmission main pipe, one side of each air transmission main pipe is connected with an air transmission branch pipe in a parallel connection mode, each air transmission main pipe is provided with a check valve, an electric regulating valve, a screw-in type flowmeter, a main pipe electromagnetic valve and a pressure reducing valve, and each air transmission branch pipe is provided with a branch pipe electromagnetic valve, a rotor flowmeter and a manual regulating valve. The utility model respectively arranges a group of gas transmission pipelines for oxygen and compressed air, and separately controls the flow of the compressed air and the flow of the oxygen; be equipped with precession formula flowmeter and electrical control valve on the gas transmission person in charge, receive velocity of flow confidence and in time send command control to electrical control valve through the PID controller, it is high-efficient accurate, effectively solve traditional manual regulation gas flow and receive operating personnel experience and subjective factor influence, the accuracy of uncontrollable gas flow, and the great problem of error.

Description

Automatic control device for bottom blowing oxygen refining ferrosilicon gas

Technical Field

The utility model belongs to the technical field of clean production of ferrosilicon in metallurgical industry, and relates to an automatic control device for bottom blowing oxygen refining ferrosilicon gas.

Background

In order to realize the purification production of the ferrosilicon alloy product, the requirements of users on the quality of the ferrosilicon product are met. The mixed gas of oxygen and compressed air is blown into the ladle in the ferrosilicon refining process, so that the aim of removing impurity elements and impurities to obtain high-purity ferrosilicon is achieved. In the traditional production process, the mixed gas is manually adjusted in the processes of tapping ferrosilicon and refining outside the ferrosilicon furnace. The manual adjustment of the gas flow is affected by the experience of operators and subjective factors, the accuracy of the gas flow cannot be controlled according to the process flow, and the error is large. Specific quantitative refining process parameters cannot be formulated according to various data of the flow, the pressure and the refining time of refining gas, and the consistency of refined finished elements cannot be ensured. In order to accurately control the flow of refining gas, improve the refining efficiency and quality and master the reasonable consumption of bottom blowing gas in ferrosilicon refining, the problems become difficult points in the industry.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems and the defects in the prior art, the utility model provides an automatic control device for bottom blowing oxygen refining ferrosilicon gas.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a gaseous automatic control device of bottom blowing oxygen refining ferrosilicon, includes the gas blow pipe, be equipped with pressure transmitter and total solenoid valve on the gas blow pipe, the one end of gas blow pipe is connected with the ladle, and the other end is connected with two sets of gas transmission pipelines respectively, the gas transmission pipeline is responsible for including the gas transmission, one side that the gas transmission was responsible for is connected with gas transmission branch pipe with the mode of parallel connection, the gas transmission is responsible for and is equipped with check valve, electrical control valve, precession formula flowmeter, is responsible for solenoid valve and relief pressure valve, be equipped with branch pipe solenoid valve, rotor flow meter and manual control valve on the gas transmission branch pipe, wherein the one end that the gas transmission of a set of gas transmission pipeline was responsible for keeping away from the gas blow pipe is connected with the air genesis, and the one end that the gas transmission of another set of gas transmission pipeline was responsible for keeping away from the gas blow pipe is connected with the oxygen genesis.

Furthermore, a control device is arranged on the gas transmission pipeline, and the control device is respectively connected with the precession type flowmeter, the electric regulating valve and the main pipe electromagnetic valve.

Furthermore, the control device comprises a PID controller, an analog input module and an analog output module are installed on the PID controller, the PID controller is connected with the main pipe electromagnetic valve, the analog input module is connected with the precession type flowmeter, and the analog output module is connected with the electric regulating valve.

Furthermore, one end of the air blowing pipe is provided with a tee joint, and the main air transmission pipes of the two air transmission pipelines are connected with the air blowing pipe through the tee joint.

Furthermore, the air blowing pipe is connected with the bottom end of the ladle.

Further, the pressure transmitter is connected with a PLC controller, and the PLC controller is connected with the master electromagnetic valve.

Further, the air source is an air compressor.

Further, the oxygen gas source is an oxygen tank.

Compared with the prior art, the utility model has the beneficial effects that:

(1) a group of gas transmission pipelines is respectively arranged on the oxygen and the compressed air, the flow of the compressed air and the flow of the oxygen are separately controlled, and the accurate proportion of the compressed air and the oxygen can be realized.

(2) Be equipped with precession formula flowmeter and electrical control valve on gas transmission is responsible for, receive velocity of flow confidence and in time send command control to electrical control valve through the PID controller, it is high-efficient accurate, effectively solve traditional manual regulation gas flow and receive operating personnel experience and subjective factor influence, the accuracy of uncontrollable gas flow, and the great problem of error.

(3) The gas transmission pipeline comprises a gas transmission main pipe and a gas transmission branch pipe, and when the gas transmission main pipe fails, manual operation of the gas transmission branch pipe can be switched to, so that the reliability of the gas transmission device is effectively improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a control schematic of the present invention.

In the figure, 1, an air blowing pipe, 2, a pressure transmitter, 3, a general electromagnetic valve, 4, a ladle, 5, a gas transmission pipeline, 51, a gas transmission main pipe, 52, a gas transmission branch pipe, 6, a one-way valve, 7, an electric regulating valve, 8, a screw-in type flowmeter, 9, a main pipe electromagnetic valve, 10, a pressure reducing valve, 11, a branch pipe electromagnetic valve, 12, a rotor flowmeter, 13, a manual regulating valve, 14, an air source, 15, an oxygen source, 16, a control device, 17, a PID controller, 18, an analog input module, 19, an analog output module, 20, a PLC controller and 21, a tee joint are arranged.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in the figure 1-2, the automatic control device for refining ferrosilicon gas by bottom blowing oxygen comprises an air blowing pipe 1, wherein a pressure transmitter 2 and a master electromagnetic valve 3 are arranged on the air blowing pipe 1, one end of the air blowing pipe 1 is connected with a ladle 4, the other end of the air blowing pipe 1 is respectively connected with two groups of air transmission pipelines 5, the air blowing pipe 1 is connected with the bottom end of the ladle 4, so that gas is upwards introduced into the ladle 4 from the bottom end of the ladle 4, the air transmission pipelines 5 comprise an air transmission main pipe 51, specifically, one end of the air blowing pipe 1 is provided with a tee 21, the air transmission main pipes 51 of the two groups of air transmission pipelines 2 are connected with the air blowing pipe 1 through the tee 21, one side of the air transmission main pipe 51 is connected with an air transmission branch pipe 52 in a parallel connection mode, the air transmission main pipe 51 is provided with a one-way valve 6 for controlling the flow of the gas, an electric regulating valve 7 for controlling the flow of the gas, a spiral feeding type 8 flow meter for detecting the gas flow, The main pipe electromagnetic valve 9 used for controlling the opening or closing of the gas transmission main pipe 51 and the pressure reducing valve 10 used for reducing the air pressure are arranged on the gas transmission branch pipe 52, a branch pipe electromagnetic valve 11, a rotor flow meter 12 and a manual adjusting valve 13 are arranged on the gas transmission branch pipe 52, one end, far away from the blowing pipe 1, of the gas transmission main pipe 51 of one group of gas transmission pipelines 5 is connected with an air source 14, one end, far away from the blowing pipe 1, of the gas transmission main pipe 51 of the other group of gas transmission pipelines 5 is connected with an oxygen source 15, the air source 14 is an air compressor, and the oxygen source 15 is an oxygen tank.

The gas transmission pipeline 5 is provided with a control device 16, the control device 16 is respectively connected with a precession flowmeter 8, the electric regulating valve 7 is connected with a main pipe electromagnetic valve 9, the control device 16 comprises a PID controller 17, the PID controller 17 is provided with an analog input module 18 and an analog output module 19, the PID controller 17 adopts a S7-200smart small controller of Siemens corporation and has a programming function, the analog input module 18 and the analog output module 19 are respectively used for receiving and sending signals, the PID controller 17 is connected with the main pipe electromagnetic valve 9 and can automatically or manually open or close the main pipe electromagnetic valve 9, the analog input module 18 is connected with the precession flowmeter 8, and the analog output module 19 is connected with the electric regulating valve.

The pressure transmitter 2 is connected with a PLC (programmable logic controller) 20, and the PLC 20 is connected with the master electromagnetic valve 3.

When the utility model is used, a corresponding gas flow parameter range or parameter value can be preset in the PID controller 17, when the gas flow is reduced, the PID controller 17 can automatically correct in time, the main electromagnetic valve 3 and the main electromagnetic valves 9 on the two gas transmission main pipes 51 are opened, the air source 15 and the air source 14 respectively transmit compressed air and oxygen to the two gas transmission main pipes 51, then the compressed air and the oxygen are transmitted to the gas blowing pipe 1 to be mixed into the ladle 4, in the process, the precession type flow meter 8 on the gas transmission main pipes 51 detects the flow velocity of the air and the oxygen and transmits the flow velocity to the PID controller, when the flow velocity is larger than or smaller than the preset value of the PID controller 17, the PID controller 17 sends a signal to the electric regulating valve 7 to control the gas flow to recover the gas flow to the preset range or reach the preset parameter value, the purpose of automatic control is achieved, and the control is accurate and fast, in the operation process, when the gas transmission main pipe 51 in the two groups of gas transmission pipelines 5 has a problem and cannot normally transmit gas, the main pipe electromagnetic valve 9 can be closed, the branch pipe electromagnetic valve 11 is opened, and the gas flow is transmitted through the gas transmission branch pipe 52, and meanwhile, the gas flow rate can be adjusted through the manual adjusting valve 13, so that the normal operation of the whole device is ensured.

In addition, the pressure transmitter 2 can detect the air pressure in the air blowing pipe 1 and transmit information to the PLC 20, and when the air pressure in the air blowing pipe 1 is larger than a set value, the PLC 20 controls the main electromagnetic valve 3 to be closed, so that safety accidents are prevented.

Claims (8)

1. The utility model provides a gaseous automatic control device of refined ferrosilicon of bottom blowing oxygen, its characterized in that, including gas blow pipe (1), be equipped with pressure transmitter (2) and total solenoid valve (3) on gas blow pipe (1), the one end of gas blow pipe (1) is connected with ladle (4), and the other end is connected with two sets of gas transmission pipeline (5) respectively, gas transmission pipeline (5) are responsible for (51) including the gas transmission, one side that the gas transmission was responsible for (51) is connected with gas transmission branch pipe (52) with the mode of parallel connection, be equipped with check valve (6), electrical control valve (7), precession formula flowmeter (8), be responsible for solenoid valve (9) and relief pressure valve (10) on gas transmission branch pipe (52), be equipped with branch pipe solenoid valve (11), rotor flow meter (12) and manual control valve (13) on gas transmission branch pipe (52), one end that gas blow pipe (1) was kept away from in gas transmission pipe (51) of one set of gas transmission pipeline (5) is connected with air origin (14), one end of the gas transmission main pipe (51) of the other group of gas transmission pipelines (5) far away from the gas blowing pipe (1) is connected with an oxygen source (15).

2. The automatic control device for bottom blowing oxygen refining ferrosilicon gas according to claim 1, characterized in that a control device (16) is arranged on the gas transmission pipeline (5), and the control device (16) is respectively connected with a precession type flowmeter (8), an electric regulating valve (7) and a main pipe electromagnetic valve (9).

3. The automatic control device for bottom blowing oxygen refining ferrosilicon gas according to claim 1, characterized in that the control device (16) comprises a PID controller (17), wherein the PID controller (17) is provided with an analog input module (18) and an analog output module (19), the PID controller (17) is connected with the main pipe electromagnetic valve (9), the analog input module (18) is connected with the precession type flowmeter (8), and the analog output module (19) is connected with the electric control valve (7).

4. The automatic control device for bottom blowing oxygen refining ferrosilicon gas as claimed in claim 1, characterized in that one end of the gas blowing pipe (1) is provided with a tee joint (21), and the gas transmission main pipes (51) of the two groups of gas transmission pipelines (5) are connected with the gas blowing pipe (1) through the tee joint (21).

5. An automatic control device for bottom blowing oxygen refining ferrosilicon gas according to claim 1, characterized in that the gas blowing pipe (1) is connected with the bottom end of the ladle (4).

6. The automatic control device for bottom-blown oxygen refined silicon iron gas according to claim 1, characterized in that the pressure transmitter (2) is connected with a PLC controller (20), and the PLC controller (20) is connected with the main electromagnetic valve (3).

7. An apparatus for automatically controlling a gas for bottom blowing oxygen refining ferrosilicon in accordance with claim 1, wherein the air source (14) is an air compressor.

8. An automatic control device for bottom blowing oxygen refined ferrosilicon gas in accordance with claim 1, characterized in that the source of oxygen gas (15) is an oxygen tank.

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