阅读说明：本技术 一种钢包氩气智能连接系统及控制方法 (Intelligent connection system for argon of steel ladle and control method ) 是由 胡念慈 刘洋 周甫 欧阳德刚 严开勇 邓攀 徐重 李华 于 2021-08-03 设计创作，主要内容包括：本发明提出一种钢包氩气智能连接系统及控制方法,包括自动进气对接装置、钢包承接装置和控制装置,自动进气对接装置包括进气气缸和对接头,对接头固定于进气气缸的活塞杆的端头,活塞杆和对接头设有贯通的进气通道；钢包承接装置包括承接头,承接头固定于钢包上,承接头内设有贯通孔,贯通孔与钢包进气管相对应连通,贯通孔的外侧设有对接腔,与对接头相匹配；控制装置包括控制器和压力传感器,压力传感器安设于对接头内部,控制器的输入端分别与上位机及压力传感器相连,输出端与进气气缸相连,本发明整体系统结构简单、控制可靠,并采用侧方向接氩的方式,实现钢包氩气智能连接及控制。(The invention provides a ladle argon intelligent connection system and a control method, comprising an automatic air inlet butt joint device, a ladle bearing device and a control device, wherein the automatic air inlet butt joint device comprises an air inlet cylinder and a butt joint, the butt joint is fixed at the end of a piston rod of the air inlet cylinder, and the piston rod and the butt joint are provided with a through air inlet channel; the steel ladle bearing device comprises a bearing head, the bearing head is fixed on a steel ladle, a through hole is arranged in the bearing head, the through hole is correspondingly communicated with a steel ladle air inlet pipe, and a butt joint cavity is arranged on the outer side of the through hole and is matched with the butt joint; the control device comprises a controller and a pressure sensor, the pressure sensor is arranged in the butt joint, the input end of the controller is respectively connected with the upper computer and the pressure sensor, and the output end of the controller is connected with the air inlet cylinder.)

1. The ladle argon intelligent connection system is characterized by comprising an automatic air inlet butt joint device, a ladle bearing device and a control device, wherein the automatic air inlet butt joint device comprises an air inlet cylinder and a butt joint, the butt joint is fixed at the end of a piston rod of the air inlet cylinder, and the piston rod and the butt joint are provided with a through air inlet channel; the steel ladle bearing device comprises a bearing head, the bearing head is fixed on a steel ladle, a through hole is arranged in the bearing head, the through hole is correspondingly communicated with a steel ladle air inlet pipe, and a butt joint cavity is arranged on the outer side of the through hole and is matched with the butt joint; the control device comprises a controller and a pressure sensor, the pressure sensor is arranged inside the butt joint, the input end of the controller is respectively connected with the upper computer and the pressure sensor, and the output end of the controller is connected with the air inlet cylinder.

2. The intelligent connection system for argon of the steel ladle as claimed in claim 1, wherein an air inlet on-off component is arranged in the butt joint and the receiving joint, the air inlet on-off component comprises a plugging plate and a pushing member, an air inlet cavity is arranged at the joint of the piston rod of the air inlet cylinder and the butt joint, the plugging plate is arranged in the air inlet cavity, slides along the air inlet cavity, and is provided with a plurality of air inlets at uniform intervals along the circumferential direction, the pushing member comprises a pushing plate and a pushing rod, the pushing plate is arranged in the through hole and is abutted against the steel ladle, a plurality of air vents are arranged at uniform intervals along the circumferential direction and correspond to the air inlet pipe of the steel ladle, and the pushing rod is fixed at the center of the end surface of the pushing plate and corresponds to the air inlet channel.

3. The intelligent connection system for argon in steel ladles as claimed in claim 2, wherein the gas inlet cylinder is provided with a gas inlet pipe and a gas outlet pipe on the two side cylinders corresponding to the piston, and the gas inlet pipe and the gas outlet pipe are provided with a gas inlet regulating valve and a gas outlet regulating valve respectively and are connected with the output end of the controller.

4. The intelligent connecting system for argon of the steel ladle as claimed in claim 3, further comprising a gas inlet butt joint compensation device, wherein the gas inlet butt joint compensation device comprises a compensation oil cylinder, and the end of a piston rod of the compensation oil cylinder is connected with the gas inlet cylinder to drive the gas inlet cylinder to reciprocate.

5. The intelligent connection system for argon in steel ladles as claimed in claim 1 or 4, wherein a limit block is arranged on a piston rod of the air inlet cylinder, a proximity switch is arranged on the ground corresponding to the piston rod, and the proximity switch is connected with the input end of the controller.

6. The intelligent argon connecting system for the steel ladles as claimed in claim 4, wherein a sliding roller is arranged on the ground corresponding to the bottom of the air inlet cylinder, the air inlet cylinder slides along the sliding roller, and a fixed bracket is arranged at the bottom of the compensation oil cylinder.

7. The ladle argon intelligent connection system as claimed in claim 2, wherein the butt joint is of a cone structure and made of flexible sealing material, the butt joint cavity is of a conical hole structure, and the end of the piston rod of the air inlet cylinder is of a T-shaped structure and is connected with the butt joint through a connecting bolt.

8. The intelligent argon connecting system for the steel ladle as claimed in claim 2 or 7, wherein a groove is formed in the inner side of the through hole, the top pushing plate is embedded in the groove, and a sealing ring is arranged on the contact surface of the top pushing plate and the steel ladle.

9. The intelligent argon connecting system for the steel ladle as claimed in claim 6, wherein the inner side surface of the bearing head is provided with a flange which is connected with the steel ladle through a fixing bolt.

10. The control method for the ladle argon intelligent connection system is characterized by comprising the following steps of:

s1) when the ladle falls on the ladle car and receives the 'automatic argon receiving' signal, the controller controls the air inlet regulating valve and the air outlet regulating valve to be opened, the system starts to time, if the time t is timed₁When a is more than or equal to a, the set value of a is 2-10 s, gas enters from the gas inlet pipe and drives the piston rod of the gas inlet cylinder to move rightwards, the limiting block is separated from the proximity switch, the return signal is lost, and the next step is carried out; if timing time t₁When the value is more than or equal to a, the return signal is not lost, the limit block and the proximity switch are not separated, and the systemDisplaying the fault of 'leakage of an air inlet system' and carrying out manual confirmation;

s2) the system detects the pressure value applied to the joint through the pressure sensor in real time, and when the timing time t is up₂B is more than or equal to b, the set value of b is 10-30 s, and the pressure value P is more than or equal to P_{Is provided with}When is, P_{Is provided with}The value range is 200-500N, which indicates that the butt joint and the receiving joint are not in close contact and are not firmly connected, and the step S4 is carried out; when timing time t₂B is more than or equal to b, and the pressure value P is less than P_{Is provided with}When the butt joint is tightly contacted with the receiving joint, the connection is firm, and the step S3 is entered;

s3) the controller gives a signal to the compensation oil cylinder to extend the piston rod of the compensation oil cylinder to the right and push the air inlet cylinder and the butt joint to move to the right integrally when timing time t₃C is more than or equal to c, the set value of c is 30-50 s, and the pressure value P is more than or equal to P_{Is provided with}When the butt joint is tightly contacted with the receiving joint, the connection is firm, and the step S4 is entered; when timing time t₃C is more than or equal to c, and the pressure value P is less than P_{Is provided with}When the connection is finished, the butt joint and the bearing joint are not in close contact, the connection is not firm, the 'failure of the telescopic system' is displayed, and manual confirmation is carried out;

s4) when the system receives the bottom blowing end signal, the controller controls the air inlet regulating valve to stop supplying air, the air outlet regulating valve to supply air, and the piston rod of the air inlet cylinder and the butt joint are pushed to move leftwards integrally; the system starts to count again when the time t is counted₄D is more than or equal to d, the set value of d is 10-30 s, the limit block is contacted with the proximity switch, the return signal is in place, the piston rod of the air inlet cylinder returns to the initial position, and the next step is carried out; when timing time t₄D, the return signal is not in place, the limit block is not in contact with the proximity switch, the controller gives a signal to the compensation oil cylinder at the moment, the piston rod of the compensation oil cylinder retracts leftwards, the air inlet cylinder and the butt joint are driven to move leftwards integrally, and when the timing time t is up₅E is more than or equal to e, the set value of e is 30-50 s, and the next step is carried out when the return signal is in place; when timing time t₅If the return signal is not in place, indicating that the piston rod is not returned, manually confirming, and entering the next step after manual confirmation;

s5) the controller controls the air inlet adjusting valve and the air outlet adjusting valve to be closed, the timing system returns to zero, the crane transfers the ladle to the ladle car, and the process is finished.

Technical Field

The invention belongs to the technical field of ladle bottom argon blowing, and particularly relates to a ladle argon intelligent connection system and a control method.

Background

The argon blowing at the bottom of the steel ladle is the most extensive external refining method adopted at home and abroad at present, can not only effectively homogenize the components and the temperature of molten steel, but also remove impurities in the molten steel and improve the quality of the molten steel. The stable operation of the ladle argon receiving system is the premise of realizing the ladle bottom argon blowing process, and the problems existing at present are as follows:

firstly, the manual quick joint type has the advantages of simple equipment and high communication rate, but because manual connection is adopted, the working time is long, the working environment is severe, the steel ladle slag falling injury is easily caused during operation, and the trolley is unstable, so that the feet are easily bent to cause personal injury.

The bell-type automatic joint type is characterized in that a female head arranged on the edge of the steel ladle is matched with a male head arranged on the edge of the trolley for automatic connection, the bell-type automatic joint type has the advantages of automatic connection, short operation time, no need of getting on the trolley by personnel, and guarantee of life safety, but has many equipment accessories, is easy to collide and slag, and has high equipment failure rate, low communication success rate and large maintenance workload due to high positioning precision requirement and large impact load in the equipment connection process.

The flat plate type automatic joint type can realize complete automatic connection, but the sealing ring has poor heat resistance and high failure rate, and the mode has high requirement on the cleanliness of the reference surface of the trolley, so that once the reference surface has the conditions of slag adhesion and the like, the system cannot automatically receive argon.

At present, no related technology and control method capable of effectively realizing intelligent connection of a ladle bottom argon blowing gas supply system exist.

Disclosure of Invention

The invention aims to solve the technical problems and provides a ladle argon intelligent connection system and a control method thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows: the ladle argon intelligent connection system is characterized by comprising an automatic air inlet butt joint device, a ladle bearing device and a control device, wherein the automatic air inlet butt joint device comprises an air inlet cylinder and a butt joint, the butt joint is fixed at the end of a piston rod of the air inlet cylinder, and the piston rod and the butt joint are provided with a through air inlet channel; the steel ladle bearing device comprises a bearing head, the bearing head is fixed on a steel ladle, a through hole is arranged in the bearing head, the through hole is correspondingly communicated with a steel ladle air inlet pipe, and a butt joint cavity is arranged on the outer side of the through hole and is matched with the butt joint; the control device comprises a controller and a pressure sensor, the pressure sensor is arranged inside the butt joint, the input end of the controller is respectively connected with the upper computer and the pressure sensor, and the output end of the controller is connected with the air inlet cylinder.

According to the scheme, an air inlet on-off component is arranged in the butt joint and the receiving joint and comprises a plugging plate and a pushing piece, an air inlet cavity is formed in the joint of a piston rod of an air inlet cylinder and the butt joint, the plugging plate is arranged in the air inlet cavity, slides along the air inlet cavity, and is provided with a plurality of air inlets at uniform intervals along the circumferential direction, the pushing piece comprises a pushing plate and a pushing rod, the pushing plate is arranged in the through hole and is abutted against the steel ladle, a plurality of air vents are arranged at uniform intervals along the circumferential direction and correspond to the air inlet pipe of the steel ladle, and the pushing rod is fixed at the center of the end face of the pushing plate and corresponds to the air inlet channel.

According to the scheme, the air inlet cylinder is provided with the air inlet pipe and the air outlet pipe on the two side cylinder bodies corresponding to the piston respectively, and the air inlet pipe and the air outlet pipe are provided with the air inlet regulating valve and the air outlet regulating valve respectively and are connected with the output end of the controller.

According to the scheme, the air inlet butt joint compensation device comprises a compensation oil cylinder, and the end of a piston rod of the compensation oil cylinder is connected with the air inlet cylinder to drive the air inlet cylinder to move in a reciprocating mode.

According to the scheme, the limit block is arranged on the piston rod of the air inlet cylinder, the ground corresponding to the piston rod is provided with the proximity switch, and the proximity switch is connected with the input end of the controller.

According to the scheme, the ground corresponding to the bottom of the air inlet cylinder is provided with the sliding roller, the air inlet cylinder slides along the sliding roller, and the bottom of the compensation oil cylinder is provided with the fixed support.

According to the scheme, the butt joint is of a cone structure and is made of flexible sealing materials, the butt joint cavity is of a conical hole structure, and the end of the piston rod of the air inlet cylinder is of a T-shaped structure and is connected with the butt joint through a connecting bolt.

According to the scheme, the inner side of the through hole is provided with the groove, the top push plate is embedded in the groove, and the contact surface of the top push plate and the steel ladle is provided with the sealing ring.

According to the scheme, the inner side surface of the bearing head is provided with a flange which is connected with the steel ladle through a fixing bolt.

A control method of a ladle argon intelligent connection system is characterized by comprising the following steps:

s1) when the ladle falls on the ladle car and receives the 'automatic argon receiving' signal, the controller controls the air inlet regulating valve and the air outlet regulating valve to be opened, the system starts to time, if the time t is timed₁When a is more than or equal to a, the set value of a is 2-10 s, gas enters from the gas inlet pipe and drives the piston rod of the gas inlet cylinder to move rightwards, the limiting block is separated from the proximity switch, the return signal is lost, and the next step is carried out; if timing time t₁When the return signal is not lost and the limit block is not separated from the proximity switch, the system displays the fault of 'leakage of the air inlet system' and carries out manual confirmation;

s2) the system detects the pressure value applied to the joint through the pressure sensor in real time, and when the timing time t is up₂B is more than or equal to b, the set value of b is 10-30 s, and the pressure value P is more than or equal to P_{Is provided with}When is, P_{Is provided with}Value range200-500N, if the connection is not firm and the butt joint and the receiving joint are not in close contact, the step S4 is performed; when timing time t₂B is more than or equal to b, and the pressure value P is less than P_{Is provided with}When the butt joint is tightly contacted with the receiving joint, the connection is firm, and the step S3 is entered;

s3) the controller gives a signal to the compensation oil cylinder to extend the piston rod of the compensation oil cylinder to the right and push the air inlet cylinder and the butt joint to move to the right integrally when timing time t₃C is more than or equal to c, the set value of c is 30-50 s, and the pressure value P is more than or equal to P_{Is provided with}When the butt joint is tightly contacted with the receiving joint, the connection is firm, and the step S4 is entered; when timing time t₃C is more than or equal to c, and the pressure value P is less than P_{Is provided with}When the connection is finished, the butt joint and the bearing joint are not in close contact, the connection is not firm, the 'failure of the telescopic system' is displayed, and manual confirmation is carried out;

s4) when the system receives the bottom blowing end signal, the controller controls the air inlet regulating valve to stop supplying air, the air outlet regulating valve to supply air, and the piston rod of the air inlet cylinder and the butt joint are pushed to move leftwards integrally; the system starts to count again when the time t is counted₄D is more than or equal to d, the set value of d is 10-30 s, the limit block is contacted with the proximity switch, the return signal is in place, the piston rod of the air inlet cylinder returns to the initial position, and the next step is carried out; when timing time t₄D, the return signal is not in place, the limit block is not in contact with the proximity switch, the controller gives a signal to the compensation oil cylinder at the moment, the piston rod of the compensation oil cylinder retracts leftwards, the air inlet cylinder and the butt joint are driven to move leftwards integrally, and when the timing time t is up₅E is more than or equal to e, the set value of e is 30-50 s, and the next step is carried out when the return signal is in place; when timing time t₅If the return signal is not in place, indicating that the piston rod is not returned, manually confirming, and entering the next step after manual confirmation;

s5) the controller controls the air inlet adjusting valve and the air outlet adjusting valve to be closed, the timing system returns to zero, the crane transfers the ladle to the ladle car, and the process is finished.

The invention has the beneficial effects that: the utility model provides a ladle argon gas intelligence connected system and control method, overall system simple structure, control is reliable, adopt the side direction to connect the mode of argon, solve the intelligent detection of ladle gas supply system intelligent connection and trouble, through the real-time supervision and the contrast of pressure, can realize the automatic accurate judgement of argon gas connection condition, adopt limit signal can realize the accurate judgement of piston rod return, and formulated corresponding procedure, effectively avoided the piston rod not to lift the ladle under the return condition to air intake system's damage, can be not enough to air intake cylinder piston rod stretching out distance through the compensation hydro-cylinder, the butt joint is insecure, air intake cylinder piston rod can't normally return the condition compensation, whole system's stability and reliability have been improved.

Drawings

FIG. 1 is a cross-sectional view of one embodiment of the present invention.

Fig. 2 is a schematic view of a closure panel according to an embodiment of the present invention.

Fig. 3 is a schematic view of a pusher according to an embodiment of the present invention.

Detailed Description

For a better understanding of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings and examples.

As shown in fig. 1, an intelligent connection system for argon of a steel ladle comprises an automatic air inlet butt joint device, a steel ladle receiving device and a control device, wherein the automatic air inlet butt joint device comprises an air inlet cylinder 1 and a butt joint 2, the butt joint is fixed at the end of a piston rod 3 of the air inlet cylinder, and the piston rod and the butt joint are provided with a through air inlet channel 4; the ladle bearing device comprises a bearing head 5, the bearing head is fixed on a ladle 6, a through hole 7 is arranged in the bearing head, the through hole is correspondingly communicated with a ladle air inlet pipe 8, and a butt joint cavity 9 is arranged on the outer side of the through hole and is matched with the butt joint; the control device comprises a controller and a pressure sensor 10, the pressure sensor is arranged inside the butt joint, the input end of the controller is respectively connected with the upper computer and the pressure sensor, and the output end of the controller is connected with the air inlet cylinder.

Be equipped with the break-make subassembly that admits air in butt joint and the adapter, the break-make subassembly that admits air includes shutoff board 11 and top pushing member, the piston rod of air inlet cylinder is equipped with air inlet chamber 12 with the junction of butt joint, the air inlet intracavity is located to the shutoff board, slide along the air inlet chamber, be equipped with a plurality of inlet ports 13 (see figure 2) along circumference to even interval, the top pushing member includes ejector plate 14 and ejector pin 15, the ejector plate is located in the through-hole, with ladle looks butt, be equipped with a plurality of air vents 16 (see figure 3) along circumference to even interval, corresponding with the ladle intake pipe, the ejector pin is fixed in the terminal surface center of ejector plate, it is corresponding with air inlet channel.

And the cylinder bodies on the two sides of the air inlet cylinder corresponding to the piston are respectively provided with an air inlet pipe 17 and an air outlet pipe 18, and the air inlet pipe and the air outlet pipe are respectively provided with an air inlet regulating valve 19 and an air outlet regulating valve 20 which are connected with the output end of the controller.

The butt joint is cone structure, is made by flexible seal material, and the butt joint chamber is the circular cone hole structure, and the end of air inlet cylinder piston rod is T type structure, passes through connecting bolt 21 with the butt joint and links to each other, can realize the high-speed joint and the dismantlement of butt joint.

The plugging plate is tightly attached to an air inlet channel port of the butt joint in an initial state, so that air inlet pressure is adjusted through the air inlet adjusting valve, air reaches an air inlet cavity along an air inlet pipe and a piston rod air inlet channel, after the cavity is filled with the whole air, the air is continuously pressurized and pushes the air inlet cylinder piston rod and the butt joint to integrally move towards the right side until the conical surface of the butt joint and the conical hole of the receiving joint are connected and generate extrusion deformation, and the air inlet cavity are completely attached to each other; in the process, the ejector rod is in contact with the plugging plate, the plugging plate moves towards the left side along the air inlet cavity and is separated from the initial position, so that air sequentially enters the air inlet channel, the air inlet hole, the through hole and the vent hole into the air inlet pipe of the steel ladle, and an air source is provided for bottom blowing of the steel ladle.

The air inlet butt joint compensation device comprises a compensation oil cylinder 22, and the end of a piston rod of the compensation oil cylinder is connected with the air inlet cylinder to drive the air inlet cylinder to move in a reciprocating mode. The air inlet cylinder, the butt joint and other mechanisms can be pushed to integrally move left and right through the extension of the piston rod of the compensation oil cylinder, so that the problems that the butt joint is not firmly connected with the bearing head and the air inlet cylinder cannot return are solved.

And a limit block 23 is arranged on a piston rod of the air inlet cylinder, a proximity switch 24 is arranged on the ground corresponding to the piston rod and is connected with the input end of the controller, and the proximity switch is mainly used for judging whether the piston rod of the air inlet cylinder is retracted to the initial position.

The ground corresponding to the bottom of the air inlet cylinder is provided with a sliding roller 25, the air inlet cylinder slides along the sliding roller, the motion resistance is reduced, and the bottom of the compensation oil cylinder is provided with a fixed support 26.

The inboard of perforating hole is equipped with the recess, and the push pedal inlays and locates in the recess, and the contact surface of push pedal and ladle is equipped with sealing washer 27, can guarantee whole receiving system's leakproofness, avoids gas leakage.

The inner side surface of the bearing head is provided with a flange which is connected with the ladle through a fixing bolt 28.

The work flow of the whole system is as follows:

s1) when the ladle falls on the ladle car and receives the 'automatic argon receiving' signal, the controller controls the air inlet regulating valve and the air outlet regulating valve to be opened, the system starts to time, if the time t is timed₁When a is more than or equal to a, the set value of a is 2-10 s, gas enters from the gas inlet pipe and drives the piston rod of the gas inlet cylinder to move rightwards, the limiting block is separated from the proximity switch, the return signal is lost, and the next step is carried out; if timing time t₁When the return signal is not lost and the limit block is not separated from the proximity switch, the system displays the fault of 'leakage of the air inlet system' and carries out manual confirmation;

s2) the system detects the pressure value applied to the joint through the pressure sensor in real time, and when the timing time t is up₂B is more than or equal to b, the set value of b is 10-30 s, and the pressure value P is more than or equal to P_{Is provided with}When is, P_{Is provided with}The value range is 200-500N, which indicates that the butt joint and the receiving joint are not in close contact and are not firmly connected, and the step S4 is carried out; when timing time t₂B is more than or equal to b, and the pressure value P is less than P_{Is provided with}When the butt joint is tightly contacted with the receiving joint, the connection is firm, and the step S3 is entered;

s3) the controller gives a signal to the compensation oil cylinder to extend the piston rod of the compensation oil cylinder to the right and push the air inlet cylinder and the butt joint to move to the right integrally when timing time t₃C is more than or equal to c, the set value of c is 30-50 s, and the pressure value P is more than or equal to P_{Is provided with}When the butt joint is tightly contacted with the receiving joint, the connection is firm, and the step S4 is entered; when timing time t₃C is more than or equal to c, and the pressure value P is less than P_{Is provided with}While, the butt joint is explainedThe bearing head is not in close contact with the bearing head, the connection is not firm, the 'failure of a telescopic system' is displayed, and manual confirmation is carried out;

s4) when the system receives the bottom blowing end signal, the controller controls the air inlet regulating valve to stop supplying air, the air outlet regulating valve to supply air, and the piston rod of the air inlet cylinder and the butt joint are pushed to move leftwards integrally; the system starts to count again when the time t is counted₄D is more than or equal to d, the set value of d is 10-30 s, the limit block is contacted with the proximity switch, the return signal is in place, the piston rod of the air inlet cylinder returns to the initial position, and the next step is carried out; when timing time t₄D, the return signal is not in place, the limit block is not in contact with the proximity switch, the controller gives a signal to the compensation oil cylinder at the moment, the piston rod of the compensation oil cylinder retracts leftwards, the air inlet cylinder and the butt joint are driven to move leftwards integrally, and when the timing time t is up₅E is more than or equal to e, the set value of e is 30-50 s, and the next step is carried out when the return signal is in place; when timing time t₅If the return signal is not in place, indicating that the piston rod is not returned, manually confirming, and entering the next step after manual confirmation;

s5) the controller controls the air inlet adjusting valve and the air outlet adjusting valve to be closed, the timing system returns to zero, the crane transfers the ladle to the ladle car, and the process is finished.

The present invention is illustrated by the above examples, and is not limited to the embodiments of the present invention, and the structure, the position arrangement and the connection of the components may be changed. On the basis of the present invention, any changes or equivalent changes of the individual components according to the principle of the present invention should not be excluded from the scope of the present invention.