CN111515259A - Anti-interference cooling system and anti-interference cooling control method - Google Patents
Anti-interference cooling system and anti-interference cooling control method Download PDFInfo
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- CN111515259A CN111515259A CN202010347588.3A CN202010347588A CN111515259A CN 111515259 A CN111515259 A CN 111515259A CN 202010347588 A CN202010347588 A CN 202010347588A CN 111515259 A CN111515259 A CN 111515259A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
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- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention discloses an anti-interference cooling system and an anti-interference cooling control method, wherein the system and the method utilize the completion progress of the previous process and the measurement result of each position detector to control the corresponding purging fans to be gradually opened and closed, and each purging fan is utilized to blow away mist near the corresponding position detector, so that the position detectors can be prevented from being interfered in the cooling process, the energy consumption of the cooling process is reduced, and the service life of the purging fans is prolonged.
Description
Technical Field
The invention relates to control of a cooling process in the field of metallurgy, in particular to an anti-interference cooling system and an anti-interference cooling control method.
Background
In the process of rolling steel plates, cooling is often performed after one rolling process. For example: after a rolling procedure is finished, the steel plate is sent into a cooling area corresponding to the cooling device through a roller way and then is sent out, and water cooling is utilized to realize accelerated cooling in the process of passing through the cooling area.
The existing cooling system comprises a cooling device, a roller way and position detectors, wherein the position detectors are usually arranged near the head and the tail of a cooling area and used for judging whether a rolled workpiece reaches or leaves a corresponding position, the opening and closing of a valve of the cooling device are controlled according to a detection result, and the roller way is started and stopped. In order to prevent the position detector from being disturbed by fog, the current solution is: the purging fan is arranged near the position detector, so that the purging fan is kept in a working state for a long time, and mist near the position detector is reduced as much as possible. However, in the mode, the purging fan is in a working state for a long time, the energy consumption is high, and the purging fan is easy to damage.
Disclosure of Invention
The invention mainly aims to provide an anti-interference cooling system and an anti-interference cooling control method, so that a position detector is prevented from being interfered in a cooling process, the energy consumption of the cooling process is reduced, and the service life of a purging fan is prolonged.
In order to achieve the above objects and other related objects, the technical solution of the present invention is as follows:
an anti-interference cooling system, which comprises a cooling device and a roller way, wherein the roller way approaches a cooling area corresponding to the cooling device, and the anti-interference cooling system further comprises:
a first position detector for detecting whether the workpiece passes the first position, the first position being located near an entrance of the cooling zone,
a second position detector for detecting whether the workpiece passes the second position, the second position being closer to the cooling zone entrance than the first position,
a third position detector for detecting whether the workpiece passes the third position, the third position being located near an outlet of the cooling zone;
a first purge fan for blowing off mist in the vicinity of the first position;
a second purge fan for blowing off the mist in the vicinity of the second position;
a third purge fan for blowing off mist in the vicinity of a third position;
the processor is provided with an information interface for receiving information about whether the previous process is finished or not, and is respectively connected with the valves of the first position detector, the second position detector, the third position detector, the driving device of the first purging fan, the driving device of the second purging fan, the driving device of the third purging fan, the driving device of the roller way and the cooling device;
the processor is configured to:
when the previous process is finished, controlling a driving device of the first blowing fan and a driving device of the roller way to start;
controlling the starting time of the second purging fan to be as follows: when the previous procedure is completed or the first position detector starts to detect the workpiece;
when the first position detector detects that the workpiece starts to pass through the first position, a valve group of the cooling device is subjected to preliminary setting;
when the second position detector detects that the workpiece starts to pass through the second position, controlling the corresponding valve group of the cooling device to be opened, and controlling the third purging fan to be opened;
and when the third position detector detects that the tail end of the workpiece leaves the third position, controlling the driving device of the first purging fan, the driving device of the second purging fan, the driving device of the third purging fan, all valves of the cooling device and the driving device of the roller way to be shut down.
Optionally, the interference-proof cooling system further comprises an encoder mounted on a roller of the roller table corresponding to the first position detector position, the processor being configured to: and judging the validity of the detection result of each position detector according to the data of the encoder.
Optionally, the second position is located at a distance M from the first position, the third position is located at a distance N from the first position, the second position is located at a distance X from the cooling zone inlet, and the third position is located at a distance Y from the cooling zone outlet, and the processor is configured to:
taking the first position as a zero point coordinate of the stroke of the front end and the tail end of the workpiece;
when the first position detector detects that the workpiece starts to pass through a first position, acquiring encoder data corresponding to the zero coordinates as initial encoding data of the front end of the workpiece;
when the first position detector detects that the workpiece starts to leave the first position, acquiring encoder data corresponding to the zero coordinates as initial encoding data of the tail end of the workpiece;
calculating the current stroke of the front end of the workpiece according to the current coding data of the encoder and the initial coding data of the front end of the workpiece, wherein when the current stroke of the front end of the workpiece is greater than M-c and less than M + c, the detection result of the second position detector is a valid result, otherwise, the detection result is an invalid result, wherein c is a constant;
and calculating the current stroke of the tail end of the workpiece according to the current encoding data of the encoder and the initial encoding data of the tail end of the workpiece, wherein when the current stroke of the tail end of the workpiece is more than N-N and less than N + N, the detection result of the third position detector is a valid result, and otherwise, the detection result is an invalid result.
Optionally, the first position detector is 5.8-6.8 meters away from the inlet of the cooling zone;
the distance between the second position detector and the inlet of the cooling area is 0.8-1.3M, the value of M is 5.0M, and the value of c is 1M;
the distance between the third position detector and the outlet of the cooling area is 1.0-2.2 m, and the value of N is 35.0 m.
Optionally, each position detector is arranged beside the roller way and is positioned beside the roller way and on one side of the driving device far away from the roller way.
Correspondingly, the invention also provides an anti-interference cooling control method, which comprises the following steps:
when the previous procedure is finished, controlling a driving device of the first blowing fan and a driving device of the roller way to start;
controlling the starting time of the second purging fan to be as follows: when the previous process is finished or the first position detector starts to detect the workpiece;
when the first position detector detects that the workpiece starts to pass through the first position, a valve group of the cooling device is subjected to preliminary setting;
when the second position detector detects that the workpiece starts to pass through the second position, the corresponding valve group of the cooling device is controlled to be opened, and the third purging fan is controlled to be opened,
and when the third position detector detects that the tail end of the workpiece leaves the third position, controlling the driving device of the first purging fan, the driving device of the second purging fan, the driving device of the third purging fan, all valves of the cooling device and the driving device of the roller way to be shut down.
Optionally, the interference-free cooling control method further includes determining validity of the detection result of each position detector according to data of the encoder.
Optionally, the method for determining validity of the detection result of each position detector according to the data of the encoder includes:
taking the first position as a zero point coordinate of the stroke of the front end and the tail end of the workpiece;
when the first position detector detects that the workpiece starts to pass through a first position, acquiring encoder data corresponding to the zero coordinates as initial encoding data of the front end of the workpiece;
when the first position detector detects that the workpiece starts to leave the first position, acquiring encoder data corresponding to the zero coordinates as initial encoding data of the tail end of the workpiece;
calculating the current stroke of the front end of the workpiece according to the current coding data of the encoder and the initial coding data of the front end of the workpiece, wherein when the current stroke of the front end of the workpiece is greater than M-c and less than M + c, the detection result of the second position detector is an effective result, otherwise, the detection result is an invalid result;
calculating the current stroke of the tail end of the workpiece according to the current encoding data of the encoder and the initial encoding data of the tail end of the workpiece, wherein when the current stroke of the tail end of the workpiece is larger than N-c and smaller than N + c, the detection result of the third position detector is a valid result, otherwise, the detection result is an invalid result;
the distance between the second position and the first position is M, the distance between the third position and the first position is N, the distance between the second position and the inlet of the cooling zone is X, the distance between the third position and the outlet of the cooling zone is Y, and c is a constant.
According to the anti-interference cooling system and the anti-interference cooling control method, the completion progress of the previous process and the measurement result of each position detector are utilized to control the corresponding purging fans to be gradually opened and closed, and the purging fans are utilized to blow away mist near the corresponding position detectors, so that the position detectors can be prevented from being interfered in the cooling process, the energy consumption of the cooling process is reduced, and the service life of the purging fans is prolonged.
Drawings
Fig. 1 shows a schematic structural diagram of a disturbance-proof cooling system of the present invention.
Description of reference numerals in the examples:
the device comprises a first position detector 1, a second position detector 2, a third position detector 3, a first purging fan 4, a second purging fan 5, a third purging fan 6, a roller way 7, a roller 701, a cooling device 8, a cooling area 801, a cooling area inlet 801a, a cooling area outlet 801b, a valve 802, a processor 9 and an encoder 10.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, like reference numerals refer to like elements throughout.
In the following embodiments, the workpiece is a steel plate, but in actual implementation, the workpiece may be other steel products with a sufficient length.
Referring to fig. 1, the anti-interference cooling system of the present invention includes a cooling device 8 and a roller way 7, wherein the roller way 7 passes through a cooling zone 801 corresponding to the cooling device 8, and the anti-interference cooling system further includes:
a first position detector 1 for detecting whether or not the workpiece passes through the first position, which is located near the cooling zone inlet 801a,
a second position detector 2 for detecting whether or not the workpiece passes through the second position, which is closer to the cooling zone inlet 801a than the first position,
a third position detector 3 for detecting whether the workpiece passes through the third position, which is located near the outlet of the cooling zone 801;
a first blowing fan 4 for blowing the mist near the first position;
a second purge fan 5 for blowing the mist in the vicinity of the second position;
a third purge fan 6 for blowing the mist in the vicinity of the third position;
the processor 9 is provided with an information interface for receiving information about whether the previous process is completed or not, and the processor 9 is respectively connected with the first position detector 1, the second position detector 2, the third position detector 3, the driving device of the first purge fan 4, the driving device of the second purge fan 5, the driving device of the third purge fan 6, the driving device of the roller table 7 and each valve 802 of the cooling device 8;
the processor 9 is configured to:
when the previous process is finished, controlling a driving device of the first blowing fan 4, a driving device of the second blowing fan 5 and a driving device of the roller table 7 to start;
when the first position detector 1 detects that the workpiece starts to pass through the first position, the valve group of the cooling device 8 is preset;
when the second position detector 2 detects that the workpiece starts to pass through the second position, controlling the corresponding valve group of the cooling device 8 to be opened, and controlling the third purging fan 6 to be opened;
and when the third position detector 3 detects that the tail end of the workpiece leaves the third position, controlling the driving device of the first purging fan 4, the driving device of the second purging fan 5, the driving device of the third purging fan 6, each valve 802 of the cooling device 8 and the driving device of the roller table 7 to be shut down.
According to the anti-interference cooling system, when the previous process is completed, the first blowing fan 4 is started, the valve 802 of the cooling device 8 is not opened, cooling water is not sprayed out, fog near each position detector is small, the effect that the first blowing fan 4 and the second blowing fan 5 correspondingly blow away the fog around the first position and the second position is better, the interference of water mist on position detection is greatly reduced, the detection result is more reliable, each blowing fan does not need to operate continuously, the required energy consumption of the cooling process is reduced, and the service life of the blowing fan is prolonged. In addition, in the invention, two detectors, namely the first position detector 1 and the second position detector 2, are arranged in front of the inlet 801a of the cooling area, and the second position detector 2 is closer to the inlet 801a of the cooling area, so that the steel plate can be started when being close to the inlet 801a of the cooling area, thereby uniformly cooling all parts of the steel plate, being beneficial to reducing fog and saving energy consumption.
In an actual implementation process, the start time of the second purge fan 5 may also be when the first position detector 1 starts to detect a workpiece, that is, the first purge fan 4 and the second purge fan 5 may be started synchronously through a common control line, or the first purge fan 4 and the second purge fan 5 may be started step by configuring a control line separately.
In an actual implementation process, the driving device of the first purging fan 4, the driving device of the second purging fan 5, the driving device of the third purging fan 6, and the driving device of the roller table 7 all include motors, the processor 9 is usually connected with a control circuit of the motors to start and stop the motors, and some driving devices further include a frequency converter, a contactor, and the like.
In actual implementation, the processor 9 may be a Programmable Logic Controller (PLC).
In practical implementation, the valve 802 of the cooling device 8 is a control valve, and specifically, a pneumatic diaphragm valve or the like may be used.
In some embodiments, each position detector is arranged beside the roller table 7 and on the side of the roller table 7 remote from the drive means of the roller table.
In some embodiments, the tamper-proof cooling system further comprises an encoder 10 mounted on a roller 701 of the roller table 7 corresponding to the position of the first position detector 1, the processor 9 being configured to: the validity of the detection result of each position detector is judged according to the data of the encoder 10, thereby improving the accuracy of the detection result.
In some embodiments, the second location is a distance M from the first location, the third location is a distance N from the first location, the second location is a distance X from the cooling zone inlet 801a, the third location is a distance Y from the cooling zone outlet 801b, the processor 9 is configured to:
taking the first position as a zero point coordinate of the stroke of the front end and the tail end of the workpiece;
when the first position detector 1 detects that the workpiece starts to pass through a first position, acquiring encoder 10 data corresponding to zero coordinates as initial encoding data of the front end of the workpiece;
when the first position detector 1 detects that the workpiece starts to leave the first position, acquiring encoder 10 data corresponding to the zero coordinates as initial encoded data of the tail end of the workpiece;
calculating the current stroke of the front end of the workpiece according to the current encoded data of the encoder 10 and the initial encoded data of the front end of the workpiece, wherein when the current stroke of the front end of the workpiece is greater than M-c and less than M + c, the detection result of the second position detector 2 is a valid result, otherwise, the detection result is an invalid result, wherein c is a constant;
and calculating the current stroke of the tail end of the workpiece according to the current encoding data of the encoder 10 and the initial encoding data of the tail end of the workpiece, wherein when the current stroke of the tail end of the workpiece is greater than N-c and less than N + c, the detection result of the third position detector 3 is a valid result, and otherwise, the detection result is an invalid result.
In actual practice, the controller calculates the displacement of the corresponding position of the steel plate by the angular displacement and radius of the encoder 10.
At this time, the second position detector 2 and the third position detector 3 are both close to the cooling area 801 and are more likely to receive fog interference compared with the first position detector 1, in this way, the front end and the tail end of the steel plate are tracked in real time, and whether the detection signals of the second position detector 2 and the third position detector 3 are effective or not is judged according to the tracking positions, so that the probability of detecting signal errors is favorably reduced, and the stability and reliability of the whole cooling system are improved.
Specifically, in some embodiments, the first position detector 1 is 5.8-6.8 meters from the cooling zone inlet 801 a; the distance between the second position detector 2 and the cooling area inlet 801a is 0.8-1.3M, the value of M is 5.0M, and the value of c is 1M; the distance between the third position detector 3 and the outlet 801b of the cooling area is 1.0-2.2 m, and the value of N is 35.0 m.
That is, when the encoder 10 monitors that the stroke of the front end of the steel plate is 4 to 6m, the result monitored by the second position detector 2 is an effective result, and when the encoder 10 monitors that the stroke of the tail end of the steel plate is 34 to 36m, the result monitored by the third position detector 3 is an effective result.
Correspondingly, the invention also provides an anti-interference cooling control method, which comprises the following steps:
when the previous process is finished, controlling a driving device of the first blowing fan 4 and a driving device of the roller way 7 to start;
the start-up time of the second purge fan 5 is controlled to be: when the previous process is completed or after the previous process is completed, and before the first position detector 1 starts detecting the workpiece or when the workpiece starts to be detected;
when the first position detector 1 detects that the workpiece starts to pass through the first position, the valve group of the cooling device 8 is preset;
when the second position detector 2 detects that the workpiece starts to pass through the second position, the corresponding valve group of the cooling device 8 is controlled to be opened, and the third purge fan 6 is controlled to be opened,
and when the third position detector 3 detects that the tail end of the workpiece leaves the third position, controlling the driving device of the first purging fan 4, the driving device of the second purging fan 5, the driving device of the third purging fan 6, each valve 802 of the cooling device 8 and the driving device of the roller table 7 to be shut down.
In some embodiments, the interference-free cooling control method further includes judging validity of the detection result of each position detector based on data of the encoder 10.
In some embodiments, the method of determining the validity of the detection result of each position detector from the data of the encoder 10 includes:
taking the first position as a zero point coordinate of the stroke of the front end and the tail end of the workpiece;
when the first position detector 1 detects that the workpiece starts to pass through a first position, acquiring encoder 10 data corresponding to zero coordinates as initial encoding data of the front end of the workpiece;
when the first position detector 1 detects that the workpiece starts to leave the first position, acquiring encoder 10 data corresponding to the zero coordinates as initial encoded data of the tail end of the workpiece;
calculating the current stroke of the front end of the workpiece according to the current coding data of the encoder 10 and the initial coding data of the front end of the workpiece, wherein when the current stroke of the front end of the workpiece is greater than M-c and less than M + c, the detection result of the second position detector 2 is an effective result, otherwise, the detection result is an invalid result;
calculating the current stroke of the tail end of the workpiece according to the current encoded data of the encoder 10 and the initial encoded data of the tail end of the workpiece, wherein when the current stroke of the tail end of the workpiece is greater than N-c and less than N + c, the detection result of the third position detector 3 is a valid result, otherwise, the detection result is an invalid result;
wherein, the distance between the second position and the first position is M, the distance between the third position and the first position is N, the distance between the second position and the inlet 801a of the cooling zone is X, the distance between the third position and the outlet 801b of the cooling zone is Y, and c is a constant.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between.
In the description of the invention, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, components, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, and/or groups thereof.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. An anti-interference cooling system comprises a cooling device and a roller way, wherein the roller way approaches a cooling area corresponding to the cooling device, and the anti-interference cooling system is characterized by further comprising:
a first position detector for detecting whether the workpiece passes the first position, the first position being located near an entrance of the cooling zone,
a second position detector for detecting whether the workpiece passes the second position, the second position being closer to the cooling zone entrance than the first position,
a third position detector for detecting whether the workpiece passes the third position, the third position being located near an outlet of the cooling zone;
a first purge fan for blowing off mist in the vicinity of the first position;
a second purge fan for blowing off the mist in the vicinity of the second position;
a third purge fan for blowing off mist in the vicinity of a third position;
the processor is provided with an information interface for receiving information about whether the previous process is finished or not, and is respectively connected with the valves of the first position detector, the second position detector, the third position detector, the driving device of the first purging fan, the driving device of the second purging fan, the driving device of the third purging fan, the driving device of the roller way and the cooling device;
the processor is configured to:
when the previous process is finished, controlling a driving device of the first blowing fan and a driving device of the roller way to start;
controlling the starting time of the second purging fan to be as follows: when the previous process is finished or the first position detector starts to detect the workpiece;
when the first position detector detects that the workpiece starts to pass through the first position, a valve group of the cooling device is subjected to preliminary setting;
when the second position detector detects that the workpiece starts to pass through the second position, controlling the corresponding valve group of the cooling device to be opened, and controlling the third purging fan to be opened;
and when the third position detector detects that the tail end of the workpiece leaves the third position, controlling the driving device of the first purging fan, the driving device of the second purging fan, the driving device of the third purging fan, all valves of the cooling device and the driving device of the roller way to be shut down.
2. The tamper-proof cooling system of claim 1, wherein: further comprising an encoder mounted on a roller of the roller table corresponding to the first position detector position, the processor being configured to: and judging the validity of the detection result of each position detector according to the data of the encoder.
3. The tamper-proof cooling system of claim 2, wherein: the second location is spaced from the first location by a distance M, the third location is spaced from the first location by a distance N, the second location is spaced from a cooling zone inlet by a distance X, and the third location is spaced from the cooling zone outlet by a distance Y, the processor being configured to:
taking the first position as a zero point coordinate of the stroke of the front end and the tail end of the workpiece;
when the first position detector detects that the workpiece starts to pass through a first position, acquiring encoder data corresponding to the zero coordinates as initial encoding data of the front end of the workpiece;
when the first position detector detects that the workpiece starts to leave the first position, acquiring encoder data corresponding to the zero coordinates as initial encoding data of the tail end of the workpiece;
calculating the current stroke of the front end of the workpiece according to the current coding data of the encoder and the initial coding data of the front end of the workpiece, wherein when the current stroke of the front end of the workpiece is greater than M-c and less than M + c, the detection result of the second position detector is a valid result, otherwise, the detection result is an invalid result, wherein c is a constant;
and calculating the current stroke of the tail end of the workpiece according to the current encoding data of the encoder and the initial encoding data of the tail end of the workpiece, wherein when the current stroke of the tail end of the workpiece is greater than N-c and less than N + c, the detection result of the third position detector is a valid result, and otherwise, the detection result is an invalid result.
4. The tamper-proof cooling system of claim 3, wherein:
the first position detector is 5.8-6.8 meters away from the inlet of the cooling area;
the distance between the second position detector and the inlet of the cooling area is 0.8-1.3M, the value of M is 5.0M, and the value of c is 1M;
the distance between the third position detector and the outlet of the cooling area is 1.0-2.2 m, and the value of N is 35.0 m.
5. The tamper-proof cooling system of claim 1, wherein: each position detector is arranged beside the roller way and is positioned beside the roller way and on one side of the driving device far away from the roller way.
6. An interference-free cooling control method, comprising:
when the previous procedure is finished, controlling a driving device of the first blowing fan and a driving device of the roller way to start;
controlling the starting time of the second purging fan to be as follows: when the previous process is finished or the first position detector starts to detect the workpiece;
when the first position detector detects that the workpiece starts to pass through the first position, a valve group of the cooling device is subjected to preliminary setting;
when the second position detector detects that the workpiece starts to pass through the second position, the corresponding valve group of the cooling device is controlled to be opened, and the third purging fan is controlled to be opened,
and when the third position detector detects that the tail end of the workpiece leaves the third position, controlling the driving device of the first purging fan, the driving device of the second purging fan, the driving device of the third purging fan, all valves of the cooling device and the driving device of the roller way to be shut down.
7. The interference-proof cooling control method according to claim 6, characterized in that: and judging the validity of the detection result of each position detector according to the data of the encoder.
8. The interference-proof cooling control method according to claim 7, characterized in that: the method for judging the validity of the detection result of each position detector according to the data of the encoder comprises the following steps:
taking the first position as a zero point coordinate of the stroke of the front end and the tail end of the workpiece;
when the first position detector detects that the workpiece starts to pass through a first position, acquiring encoder data corresponding to the zero coordinates as initial encoding data of the front end of the workpiece;
when the first position detector detects that the workpiece starts to leave the first position, acquiring encoder data corresponding to the zero coordinates as initial encoding data of the tail end of the workpiece;
calculating the current stroke of the front end of the workpiece according to the current coding data of the encoder and the initial coding data of the front end of the workpiece, wherein when the current stroke of the front end of the workpiece is greater than M-c and less than M + c, the detection result of the second position detector is an effective result, otherwise, the detection result is an invalid result;
calculating the current stroke of the tail end of the workpiece according to the current encoding data of the encoder and the initial encoding data of the tail end of the workpiece, wherein when the current stroke of the tail end of the workpiece is larger than N-c and smaller than N + c, the detection result of the third position detector is a valid result, otherwise, the detection result is an invalid result;
the distance between the second position and the first position is M, the distance between the third position and the first position is N, the distance between the second position and the inlet of the cooling zone is X, the distance between the third position and the outlet of the cooling zone is Y, and c is a constant.
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| CN113604655A (en) * | 2021-08-09 | 2021-11-05 | 宝武集团鄂城钢铁有限公司 | Fog cold blowing control equipment, method and device and storage medium |
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