CN111590042B - Hydraulic control device and method and continuous casting ladle nozzle control equipment - Google Patents
Hydraulic control device and method and continuous casting ladle nozzle control equipment Download PDFInfo
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- CN111590042B CN111590042B CN202010487468.3A CN202010487468A CN111590042B CN 111590042 B CN111590042 B CN 111590042B CN 202010487468 A CN202010487468 A CN 202010487468A CN 111590042 B CN111590042 B CN 111590042B
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- pressure
- continuous casting
- hydraulic
- ladle nozzle
- casting ladle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
Abstract
The invention discloses a hydraulic control device, a method and continuous casting ladle nozzle control equipment, wherein the continuous casting ladle nozzle control equipment realizes the opening or closing of a continuous casting ladle nozzle by controlling the hydraulic pressure, and comprises the following steps: the control system comprises an electromagnetic directional valve, an overflow valve and a pilot type pressure reducing valve, wherein the electromagnetic directional valve responds to the operation that the pressure of hydraulic pressure controlled by a user is low, controls the pilot type pressure reducing valve to work after being electrified so as to enable the pressure of the control hydraulic pressure of the continuous casting ladle nozzle control equipment to be preset safe pressure, and responds to the operation that the pressure of the control hydraulic pressure controlled by the user is high so as to lose the power, wherein the continuous casting ladle nozzle control equipment can normally work under the safe pressure; and the overflow valve is used for controlling the hydraulic pressure of the continuous casting ladle nozzle control equipment to be normal working pressure under the condition that the electromagnetic directional valve is out of power. The invention can realize the conversion of high pressure and low pressure, ensure the life safety and reduce the risk coefficient.
Description
Technical Field
The invention relates to the technical field of hydraulic control, in particular to a hydraulic control device and continuous casting ladle nozzle control equipment.
Background
The opening or closing of the continuous casting ladle nozzle is mainly controlled by controlling the hydraulic pressure of a related actuating mechanism, the hydraulic pressure of the actuating mechanism in working is 16MPa, the temperature around an oil cylinder of the actuating mechanism is about 600 ℃, and the position of the actuating mechanism is very close to that of a ladle. The post personnel need to take off and hang the hydro-cylinder closely after a new ladle of steel or a ladle of steel has been poured each time, and the risk of bursting exists under the roast condition of high temperature in hydraulic pressure rubber tube and relevant pipeline of actuating mechanism this moment, and big ladle mouth of a river has the risk of opening by oneself simultaneously, and the post personnel expose in this high dangerous environment, very dangerous.
Disclosure of Invention
The hydraulic control circuit, the method and the system of the continuous casting ladle nozzle control equipment can realize high-low pressure conversion, ensure personal safety, reduce risk coefficient and avoid damage caused by misoperation, line short circuit and the like.
In order to achieve the above object, the present invention provides a hydraulic control apparatus of a continuous casting ladle nozzle control device that realizes opening or closing of a continuous casting ladle nozzle by controlling a hydraulic pressure, the hydraulic control apparatus including: the control system comprises an electromagnetic directional valve, an overflow valve and a pilot type pressure reducing valve, wherein the electromagnetic directional valve responds to the operation that the pressure of hydraulic pressure controlled by a user is low, controls the pilot type pressure reducing valve to work after being electrified so as to enable the pressure of the control hydraulic pressure of the continuous casting ladle nozzle control equipment to be preset safe pressure, and responds to the operation that the pressure of the control hydraulic pressure controlled by the user is high to lose electricity, wherein the continuous casting ladle nozzle control equipment can normally work under the safe pressure; and the overflow valve controls the hydraulic pressure of the continuous casting ladle nozzle control equipment to be normal working pressure under the condition that the electromagnetic directional valve is powered off.
Preferably, the hydraulic control apparatus further includes: and the controller is used for adjusting the preset safety pressure.
Preferably, the hydraulic control apparatus further includes: and the button operation box is arranged at a designated safety position of the continuous casting ladle nozzle control equipment and is provided with a high-pressure button capable of responding to the operation that the pressure of the user control hydraulic pressure is high and a low-pressure button capable of responding to the operation that the pressure of the user control hydraulic pressure is low.
Preferably, the hydraulic control apparatus further includes: and the cable is arranged at the appointed position of the button operation box and is used for realizing the signal interaction of the electromagnetic directional valve with the overflow valve and the pilot type reducing valve respectively.
In addition, the invention also provides a hydraulic control method of the continuous casting ladle nozzle control equipment, the hydraulic control method uses the hydraulic control device, and the hydraulic control method comprises the following steps: after a ladle is placed on the rotary table, controlling the electromagnetic directional valve to be electrified so as to enable the pressure of the control hydraulic pressure of the continuous casting ladle nozzle control equipment to be a preset safety pressure; and after the operator finishes detaching the oil cylinder and is positioned at a designated safety position, controlling the electromagnetic directional valve to lose power, and controlling the pressure of the control hydraulic pressure of the continuous casting ladle nozzle control equipment to be normal working pressure so as to realize normal casting of the ladle nozzle.
Preferably, the preset safe pressure is 4-7 MPa.
Preferably, the preset safety pressure is 5 MPa.
Preferably, the normal working pressure is 14-18 MPa.
Preferably, the normal working pressure is 16 MPa.
In addition, the invention also provides continuous casting ladle nozzle control equipment which comprises the hydraulic control device.
According to the technical scheme, the electromagnetic directional valve is added on the existing hydraulic control device to realize the conversion of a line for controlling the hydraulic pressure, and then the pilot type pressure reducing valve is used for executing related work to control the hydraulic pressure of the hydraulic control device to be at the preset safety pressure, so that the hydraulic pipe cannot burst and further cannot hurt people in the process of detaching and hanging the oil cylinder by an operator. After an operator finishes the operation of detaching and hanging the related oil cylinders, the pressure of the control hydraulic pressure of the continuous casting ladle nozzle control equipment is made to be normal working pressure by controlling the electromagnetic directional valve to lose power, and then normal casting of the ladle nozzle is realized. The whole process avoids the injury of operators and enables the ladle nozzle to be cooled normally.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a circuit diagram illustrating a hydraulic control device of a continuous casting ladle nozzle control apparatus in the prior art;
FIG. 2 is a circuit diagram illustrating a modification of a hydraulic control device of a continuous casting ladle nozzle control apparatus according to the present invention; and
fig. 3 is a flow chart illustrating a hydraulic control method of a continuous casting ladle nozzle control apparatus of the present invention.
Description of the reference numerals
1 electromagnetic directional valve 2 overflow valve
4-pilot type pressure reducing valve
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Before the device of the invention is described in detail, the control device of the continuous casting ladle nozzle is simply described. The device is used for controlling the opening and closing of the continuous casting ladle nozzle, and the size of the ladle nozzle can be controlled by controlling the oil pressure. Because the oil cylinder needs to be detached and hung in a close range every time a worker newly puts on or pours a ladle of steel, the oil cylinder is very close to the ladle, the risk of pipe explosion exists under the conditions of high temperature and high oil pressure, and if the worker is still in the position at the moment, great potential safety hazard is caused, therefore, the invention designs the following scheme on the basis of the figure 1. Fig. 1 is a control circuit diagram of a control device in the related art, which cannot realize control switching of oil pressure.
Fig. 2 is a circuit diagram of a hydraulic control apparatus according to a modification of the present invention, which includes, as shown in fig. 2: the control system comprises an electromagnetic directional valve 1, an overflow valve 2 and a pilot type pressure reducing valve 4, wherein the electromagnetic directional valve 1 responds to the operation that the pressure of hydraulic pressure controlled by a user is low pressure, controls the pilot type pressure reducing valve 4 to work after power is supplied, so that the pressure of the control hydraulic pressure of the continuous casting ladle nozzle control equipment is preset safe pressure, and responds to the operation that the pressure of the hydraulic pressure controlled by the user is high pressure and loses power, wherein the continuous casting ladle nozzle control equipment can normally work under the safe pressure; and the overflow valve 2 is used for controlling the pressure of the control hydraulic pressure of the continuous casting ladle nozzle control equipment to be normal working pressure under the condition that the electromagnetic directional valve 1 is powered off. The electromagnetic directional valve 1 is electrically connected with the overflow valve 2 and the pilot type pressure reducing valve 4, and the control of the circuit can be realized by utilizing the two electrical connection modes. The specific control, as described above, enables switching connections of the circuit at high or low voltages.
Further preferably, the hydraulic control apparatus may further include: and the controller is used for adjusting the preset safety pressure. The preset safety pressure can be adjusted according to actual conditions, for example, the preset safety pressure can be adjusted to be high pressure or low pressure, the specific pressure value is about 4-7MPa, if the preset safety pressure is too low, the device is unstable in work, related operations cannot be realized, and the device is easy to malfunction.
Further preferably, the hydraulic control apparatus further includes: the button operation box is arranged at a designated safety position of the continuous casting ladle nozzle control equipment, the designated safety position is a south side upright post of a tundish platform (the position is not illustrated in the drawing, but the position is relatively safe, and is convenient for an operator to observe), and a high-pressure button capable of responding to the operation that a user controls the pressure of hydraulic pressure to be high pressure and a low-pressure button capable of responding to the operation that the user controls the pressure of hydraulic pressure to be low pressure are arranged. The high-pressure button and the low-pressure button can be designed into different colors, for example, the high-pressure button is red, and the low-pressure button is green, so that the use is more convenient, and misoperation of an operator is prevented.
Further preferably, the hydraulic control apparatus may further include: and the cable is arranged at the appointed position of the button operation box and is used for realizing the signal interaction between the electromagnetic directional valve 1 and the overflow valve 2 and the pilot type pressure reducing valve 4 respectively. The cable can realize signal interaction between the electromagnetic directional valve 1 and the overflow valve 2 and between the electromagnetic directional valve 1 and the pilot type pressure reducing valve 4, and the cable is matched with the electromagnetic directional valve 1 for use.
In addition, the present invention also provides a hydraulic control method of a continuous casting ladle nozzle control apparatus, the hydraulic control method using the above-mentioned hydraulic control device, and fig. 3 is the hydraulic control method, which includes: s301, after a ladle is placed on a rotary table, controlling the electromagnetic directional valve 1 to be electrified so that the pressure of control hydraulic pressure of continuous casting ladle nozzle control equipment is preset safe pressure; and S302, after the designated personnel finish detaching and hanging the oil cylinder and are positioned at the designated safe position, controlling the electromagnetic directional valve 1 to lose power, and controlling the pressure of the control hydraulic pressure of the continuous casting ladle nozzle control equipment to be normal working pressure so as to realize normal casting of the ladle nozzle.
Preferably, the preset safe pressure is 4-7 MPa.
Preferably, the preset safety pressure is 5 MPa.
Preferably, the normal working pressure is 14-18 MPa.
Preferably, the normal working pressure is 16 MPa.
In addition, in the practical operation of the invention, (1) the valve platform is firstly installed and then the pipeline is butted, the pipeline is connected with a flushing pipeline, and the flushing is qualified; (2) a cable is arranged from the electric control cabinet to the valve table to be matched with the newly added electromagnetic directional valve 1 for use, a control button operation box is arranged at the south side upright post of the tundish platform, and the operation box is provided with a high-voltage button and a low-voltage button; (3) after the hydraulic and electrical equipment is installed and has debugging conditions, debugging the equipment until the equipment can be accurately operated; (4) the post personnel to equipment actual operation, after the ladle on the revolving platform, after the post operation low pressure button, big package mouth of a river valve platform solenoid directional valve 1 gets electric, and valve platform pressure passes through the control that leading formula relief pressure valve 4 realized low pressure 5MPa (low pressure is adjustable to satisfy the field usage and be accurate), and the post carries out plucking and hanging of big package mouth of a river hydro-cylinder this moment, because pipeline pressure is in the low pressure state, has prevented that the high pressure rubber pipe from hurting people because of high temperature high pressure blast pipe, has prevented to lead to the mouth of a river to open certainly because of high pressure and other factors and has hurt people. The pressure of the pipeline is adjusted to the state that the oil cylinder can act to conveniently detach and hang the oil cylinder and the ladle opening mechanism cannot be opened, so that the injury to people caused by pipe explosion of the hydraulic pipe and the injury to people caused by self-opening of the water gap are avoided. (5) After the oil cylinder is dismounted and hung at the ladle nozzle, the operator far away from the rotary table returns to the operating box and then switches the operating button to a high-pressure state, the electromagnetic directional valve 1 is powered off, the pressure is controlled through the overflow valve 2, the pressure of the overflow valve 2 is set to be 16MPa, and the ladle nozzle is guaranteed to be normally cast.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A hydraulic control device of a continuous casting bale water gap control device is characterized in that the continuous casting bale water gap control device realizes the opening or closing of a continuous casting bale water gap by controlling the hydraulic pressure, and the hydraulic control device comprises: an electromagnetic directional valve, an overflow valve and a pilot operated pressure reducing valve, wherein,
the electromagnetic directional valve responds to the operation that the pressure of the hydraulic pressure controlled by a user is low pressure, controls the pilot type reducing valve to work after being electrified so that the pressure of the control hydraulic pressure of the continuous casting ladle nozzle control equipment is preset safe pressure, and responds to the operation that the pressure of the control hydraulic pressure controlled by the user is high pressure to lose electricity, wherein the continuous casting ladle nozzle control equipment can work normally under the preset safe pressure; and
and the overflow valve controls the hydraulic pressure of the continuous casting ladle nozzle control equipment to be normal working pressure under the condition that the electromagnetic directional valve is powered off.
2. The hydraulic control device of a continuous casting ladle nozzle control device according to claim 1, further comprising: and the controller is used for adjusting the preset safety pressure.
3. The hydraulic control device of a continuous casting ladle nozzle control device according to claim 1, further comprising: and the button operation box is arranged at a designated safety position of the continuous casting ladle nozzle control equipment and is provided with a high-pressure button capable of responding to the operation that the pressure of the user control hydraulic pressure is high and a low-pressure button capable of responding to the operation that the pressure of the user control hydraulic pressure is low.
4. The hydraulic control device of a continuous casting ladle nozzle control apparatus according to claim 3, further comprising: and the cable is arranged at the appointed position of the button operation box and is used for realizing the signal interaction of the electromagnetic directional valve with the overflow valve and the pilot type reducing valve respectively.
5. A hydraulic control method of a continuous casting ladle nozzle control apparatus, characterized in that the hydraulic control method uses the hydraulic control device of any one of claims 1 to 4, and the hydraulic control method comprises:
after a ladle is placed on the rotary table, controlling the electromagnetic directional valve to be electrified so as to enable the pressure of the control hydraulic pressure of the continuous casting ladle nozzle control equipment to be a preset safety pressure; and
after the appointed personnel finish the oil cylinder detaching and hanging and are positioned at the appointed safe position, the electromagnetic directional valve is controlled to lose power, and the control hydraulic pressure of the continuous casting ladle nozzle control equipment is controlled to be the normal working pressure so as to realize the normal casting of the ladle nozzle.
6. The hydraulic control method of a continuous casting ladle nozzle control device according to claim 5, wherein the preset relief pressure is 4-7 MPa.
7. The hydraulic control method of a continuous casting ladle nozzle control device according to claim 5, wherein the preset relief pressure is 5 MPa.
8. The hydraulic control method of a continuous casting ladle nozzle control device according to claim 5, wherein the normal working pressure is 14-18 MPa.
9. The hydraulic control method of a continuous casting ladle nozzle control device according to claim 5, wherein the normal working pressure is 16 MPa.
10. A continuous casting ladle nozzle control device, characterized in that the continuous casting ladle nozzle control device comprises a hydraulic control device according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010487468.3A CN111590042B (en) | 2020-06-02 | 2020-06-02 | Hydraulic control device and method and continuous casting ladle nozzle control equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010487468.3A CN111590042B (en) | 2020-06-02 | 2020-06-02 | Hydraulic control device and method and continuous casting ladle nozzle control equipment |
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| Publication Number | Publication Date |
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| CN111590042A CN111590042A (en) | 2020-08-28 |
| CN111590042B true CN111590042B (en) | 2022-01-04 |
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| CN202010487468.3A Active CN111590042B (en) | 2020-06-02 | 2020-06-02 | Hydraulic control device and method and continuous casting ladle nozzle control equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204041594U (en) * | 2014-07-17 | 2014-12-24 | 麦格瑞冶金工程技术（北京）有限公司 | A kind of ladle lifting hydraulic cylinder hydraulic control device |
| CN205243985U (en) * | 2015-11-11 | 2016-05-18 | 北京首钢股份有限公司 | Hot base pressure hydraulic control system of fan -shaped section drive roller of slab caster |
| CN106424652B (en) * | 2016-11-14 | 2018-08-24 | 苏州慧驰轻合金精密成型科技有限公司 | A kind of mesohigh Casting Equipment control pressurer system and control method |
| CN206966633U (en) * | 2017-08-03 | 2018-02-06 | 新兴铸管股份有限公司 | The mouth of a river controls hydraulic system and big water-coating port mechanism |
| CN109611396B (en) * | 2019-01-11 | 2024-04-30 | 中国重型机械研究院股份公司 | Automatic oil supply switching hydraulic system and method for large-ladle sliding gate hydraulic cylinder |
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