CN113899574A - Fault detection method of cooling air blowing equipment and spinning equipment - Google Patents
Fault detection method of cooling air blowing equipment and spinning equipment Download PDFInfo
- Publication number
- CN113899574A CN113899574A CN202111131006.9A CN202111131006A CN113899574A CN 113899574 A CN113899574 A CN 113899574A CN 202111131006 A CN202111131006 A CN 202111131006A CN 113899574 A CN113899574 A CN 113899574A
- Authority
- CN
- China
- Prior art keywords
- air blowing
- temperature
- cooling
- spinning
- cooling air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
- D01D13/02—Elements of machines in combination
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The invention discloses a fault detection method of cooling air blowing equipment and spinning equipment, and belongs to the technical field of spinning equipment. The spinning equipment comprises a plurality of spinning assemblies, cooling air blowing equipment is arranged below the spinning assemblies, an oiling device is arranged below the cooling air blowing equipment, and an area above the oiling device and below the spinning assemblies form an area to be detected; the method comprises the following steps: s1, adjusting the position of the thermal imager to enable the imaging area of the thermal imager to at least cover the area to be detected; s2, acquiring a temperature distribution image of the area to be detected through a thermal imager; s3, preprocessing the thermal image to acquire the region of interest of the thermal image; and S4, acquiring the detection temperature of each pixel point in the region of interest, and judging whether the cooling and blowing equipment has a fault or not according to the detection temperature. The invention obtains the temperature field distribution of the cooling air blowing equipment through the thermal imager, judges whether the cooling air blowing equipment fails or not, has simple and accurate operation and saves the cost.
Description
Technical Field
The invention belongs to the technical field of spinning equipment, and particularly relates to a fault detection method of cooling air blowing equipment and the spinning equipment.
Background
The cooling air blowing device is a very important key part in the spinning process of the chemical fiber industry, and high-temperature spinning materials are sprayed out from a spinneret plate in a spinning assembly, cooled, formed and processed into fibers. Therefore, the temperature field of the space of the cooling and blowing equipment can directly influence the fiber cooling effect, the fluctuation of the cooling and blowing temperature and the uniformity of the temperature field can have great influence on the fiber cooling effect, and particularly the uniformity of the temperature among the bundles of fibers has great influence on the fiber cooling effect. The cooling and blowing temperature affects the fiber cooling, crystallization speed and solidification point position. The state direct influence cooling temperature field's of cooling equipment of blowing temperature, the filter screen part of blowing is blockked up by impurity, can cause this department not smooth that ventilates, and the cold wind volume reduces, reduces the cooling effect. Therefore, the detection of the cooling air blowing temperature field can also play a role in predicting equipment failure and maintenance.
The cooling and blowing apparatus is used in units of parts. Each part comprises a plurality of spindle positions, each spindle position is provided with a spinning component which is transversely arranged above the cooling air blowing device at equal intervals, and the fibers are sprayed out from a spinneret plate in the spinning component above, downwards pass through the cooling air blowing device, pass through an oiling device, and then enter a channel and a godet or a drawing hot roller for winding. The cooling speed of the fiber is determined by the temperature distribution of the cooling and blowing equipment from top to bottom, and the crystallization degree and the speed of the fiber are also determined by the temperature field at the position; the difference of the transverse temperature distribution of the cooling air blowing device can cause the uneven cooling degree of the fibers at each spindle position. Therefore, the understanding of the temperature distribution of the temperature field in the cooling and blowing link has great significance for the crystallization, solidification and fiber formation of the fiber and the understanding of the difference of the cooling states of the fiber at each spindle position.
Therefore, a process worker needs to know the temperature of the cooling and blowing equipment, the distribution and uniformity of the temperature field of the cooling and blowing equipment, and the temperature change and difference in the cooling and blowing link, so that a maintenance worker can know whether the filter screen of the cooling and blowing equipment is clean and whether the honeycomb plate is damaged and maintain the equipment, and meanwhile, a design worker can find design defects according to a detection result and modify and optimize the design defects.
The traditional cooling and blowing equipment only has the temperature of the total air outlet of the cooling and blowing air conditioner for observation and analysis by process personnel. But the temperature of the fibers in the cooling and blowing link has certain deviation with the temperature of the total air outlet of the air conditioner due to the existing air channel distance; because the positions of all parts of the cooling air blower are different, the air duct distances are also different, and the temperature difference also exists among all the parts of the cooling air blower; due to the equipment structure, the air quantity and the air speed of the same cooling air blowing part are different even if the temperature of each ingot position and each air outlet point of each ingot position are the same, and the cooling state of the fiber is also different. In addition, dust and impurities in the cooling air change along with time and slowly adhere to the air outlet to block the cooling air, so that the difference of fiber cooling effect is caused; the cellular board in the cooling and blowing equipment is often damaged in daily operation, which also causes uneven air volume and wind speed of cooling and blowing air. The skilled worker cannot grasp the above-mentioned differences and can only determine the solidification point and the degree of crystallization of the fibers by experience and visual inspection, while the difference in cooling of the fibers is by default uniform; the equipment maintenance personnel regularly carry out filter screen cleaning and honeycomb panel restoration according to experience, and is extremely inaccurate.
Chinese patent application No. CN201680005206.0 discloses a method and apparatus for quality monitoring of multiple melt-spun slivers of a tow, which is provided with three thermal imaging cameras to monitor each newly extruded sliver, and directly corresponds the spinning defects appearing in the sliver to the associated spinning nozzle units, so that possible contamination of the spinning nozzle units ahead of time can be identified by the frequency of the spinning defects. This patent does not detect the cooling link of blowing, can't judge trouble, damage, the temperature fluctuation of cooling equipment of blowing emergence, the inhomogeneous scheduling problem in temperature field. This patent does not carry out whole detection to cooling blow and wherein fibre, can't obtain the temperature variation of fibre in cooling blow temperature field and cooling process thereof, and then can't obtain the homogeneity and the cooling degree of fibre in cooling blow temperature field. The patent adopts three thermal imaging cameras to obtain the temperature of fiber strips for three spinning nozzle units in a spinning component body, has high cost, can find problem fibers, but is not beneficial to finding out the reason of the problem fibers.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a fault detection method of cooling air blowing equipment.
Another object of the invention is to provide a spinning apparatus.
In order to solve the technical problems, the invention adopts the technical scheme that:
a fault detection method of cooling air blowing equipment comprises the steps that the spinning equipment comprises a plurality of spinning assemblies, the cooling air blowing equipment is arranged below the spinning assemblies, an oiling device is arranged below the cooling air blowing equipment, and areas above the oiling device and below the spinning assemblies form an area to be detected;
the method comprises the following steps:
s1, adjusting the position of the thermal imager to enable the imaging area of the thermal imager to at least cover the area to be detected;
s2, acquiring a temperature distribution image of the area to be detected through a thermal imager;
s3, preprocessing the thermal image obtained in the step S2, and acquiring an interested area of the thermal image;
s4, obtaining the detection temperature of each pixel point in the region of interest as the detection temperature of the region to be detected, and judging whether the cooling and blowing equipment has a fault according to the detection temperature of the region to be detected.
Through the design, the temperature of the cooling air blowing equipment in a larger area range is detected through the thermal imager, and whether the cooling air blowing equipment has faults, fault positions and the like can be judged through the detected temperature of the cooling air blowing equipment, so that the cooling air blowing equipment is maintained in time, and the fiber quality is ensured; and the obtained temperature field distribution data of the cooling air blowing environment in which the fiber is positioned can also be used for providing relevant data for relevant process personnel and technicians and for various subsequent analyses.
Further, the region of interest in the step S3 is a region formed by the cooling air blowing device and the spun fibers below the spinning assembly and above the oiling device.
Through the design, the temperature field distribution of the cooling air blowing equipment towards the fiber air blowing side can be detected, the temperature of the spinning fiber can also be detected, the cooling air blowing environment temperature is related to the fiber temperature, the situation that the temperature field data of the cooling air blowing equipment is lacked is filled, and the cooling air blowing equipment temperature can be related to the fiber temperature.
Further, after the detection temperature of each pixel point in the region of interest is obtained in step S4, N × M pixel point matrices are extracted from the region of interest as the detection temperature of the target detection region, and whether the cooling and blowing device is faulty or not is determined according to the detection temperature of the target detection region;
preferably, the target detection area comprises the cooling air blowing device and/or the spun fibers.
Through the design, the data volume is reduced, the calculated amount is reduced, and the analysis speed of related process personnel is improved.
Further, when the target detection area is the cooling air blowing device, analyzing the thermal imaging image of the target detection area, judging whether the color change rules of the target detection area are consistent, and if so, judging that the cooling air blowing device normally operates; otherwise, the cooling-air blowing device is checked for faults.
Through the design, the cooling air blowing equipment and the regularity of the temperature change of the fibers are theoretically utilized, the abnormal area is visually judged through the color of the thermal image, and the cooling air blowing equipment is visual and convenient and can be overhauled in time.
Further, when the target detection area is the cooling air blowing device, calculating a temperature value variance of the target detection area, when the variance is greater than a threshold value, the temperature fluctuation of the target detection area is large, and fault detection is performed on the cooling air blowing device, otherwise, the temperature fluctuation of the target detection area is small, and the cooling air blowing device operates normally.
Through the design, whether the temperature field of the cooling air blowing equipment is uniform or not is quantitatively analyzed, and the larger the variance value is, the larger the temperature fluctuation of the target detection area is, so that the cooling air blowing equipment needs to be checked in time.
Further, when the target detection area is the spinning fiber, acquiring the maximum value and the minimum value of the pixel point temperature of each row in the N multiplied by M pixel point matrixes, calculating the difference value between the maximum value and the minimum value of the pixel point temperature of each row, if the difference value exceeds a set value, the spinning fiber temperature of the row is uneven, and whether the cooling air blowing device fails or not is checked, otherwise, the spinning fiber temperature of the row is even, and the cooling air blowing device normally operates.
Through the design, the pixel point temperature of each row is compared, the pixel point temperature of the same row should be the same theoretically, and fluctuation exists in practice, but the fluctuation is in the range of the set value, so that the influence on the fiber is avoided, the fluctuation of the set value is calculated, the fluctuation exceeds the fluctuation of the set value, and the influence on the fiber is caused when the temperature is too high or too low, so that the further inspection is needed.
Furthermore, when the target detection area is the spinning fiber, the temperature of each row of pixel points in the N multiplied by M pixel point matrix is obtained, the position of the freezing point of each fiber is determined, and the position of the oiling device is adjusted according to the position of the freezing point of each fiber.
Through above-mentioned design, theoretically, every fiber temperature reduces gradually to the oiling device along the spinning subassembly, when the fiber temperature drops to the freezing point, just can oil, so, can be according to the fibre freezing point position, the position of the device that oils of adjustment, assurance spinning process is stable goes on.
Furthermore, the temperature of the pixel points of each row of the target detection area and the temperature of the pixel points of each column of each fiber are drawn as temperature change curves to be respectively displayed visually.
Through the design, the temperature field distribution condition of a target detection area at a certain moment can be intuitively known, and the checking is convenient.
A spinning device comprises the fault detection method of the cooling air blowing device.
Through the design, the temperature detection method of the cooling air blowing equipment is realized.
Further, the method comprises the following steps of,
the thermal imager is used for detecting the temperature of the area to be detected;
the thermal imager is arranged on the bracket, and the bracket drives the thermal imager to move so as to adjust the detection area of the thermal imager;
the control equipment, the thermal imaging appearance with the support connection controlgear, controlgear control the thermal imaging appearance carries out temperature detection and control the support motion.
Through the design, the temperature field distribution data of the cooling air blowing equipment in a large area range can be obtained through one thermal imager, and the thermal imager and the support are simple in mounting structure, simple in detection process and low in cost.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
(1) The invention carries out temperature detection on a larger area range of one side of the cooling air blowing equipment through the thermal imager to obtain the temperature field distribution data of the cooling air blowing equipment, thereby facilitating relevant process personnel and technical personnel to check relevant data and follow-up various analysis and use.
(2) The invention adopts a thermal imager to detect the temperature field distribution condition of the cooling air blowing equipment below a plurality of spinning components in a spinning part, so that process personnel can know the temperature field data of the fiber and the cooling air blowing equipment in spinning in time, thereby knowing the cooling condition of the fiber, the difference of the cooling conditions of each tow and the cooling speed of the fiber and better controlling the process; equipment maintenance personnel can timely and accurately know the state of the cooling and blowing equipment, find faults and maintain the equipment in time so as to avoid influencing fiber production and product quality, avoid meaningless maintenance and reduce maintenance cost; the equipment designer further checks the relevant data to see the defects of the cooling and blowing equipment and optimizes the defects.
(4) The position of the oiling device is adjusted by acquiring the fiber solidifying point, so that the stable spinning process is ensured.
(5) By adopting the spinning equipment, the thermal imager can be used for detecting the temperature field distribution of the cooling air blowing equipment below a spinning part, and meanwhile, the control equipment stores the temperature data of the area to be detected at each moment, so that technicians can perform subsequent analysis and research.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic flow chart of a fault detection method of a cooling air blowing device according to the invention;
FIG. 2 is a schematic diagram of the distribution result of the temperature field of the region to be detected obtained by the method of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is a schematic view of the principle of the invention for detecting the temperature of a cooling-air blowing device;
FIG. 5 is a front view of a spinning apparatus according to the present invention, wherein 5A is a front view of the spinning apparatus, 5B is a temperature variation curve of the fiber from the spinning pack to the oiling device, wherein the arrow direction of the X-axis indicates that the temperature is gradually increased, and the arrow direction of the Y-axis indicates that the fiber is gradually separated from the spinning pack;
FIG. 6 is a left side view of a spinning apparatus configuration of the present invention.
In the figure: 1. spinning equipment; 10. a spinning member; 100. a spinning assembly; 11. a cooling blower device; 110. a region to be detected; 12. an oiling device; 13. a thread guide; 14. a thermal imager; 15. a support; 16. a control device; 160. a PLC control cabinet; 161. an upper computer; 17. fibers; 18. freezing point.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 4, the present invention provides a fault detection method for a cooling air blowing device, where a spinning device 1 includes a plurality of spinning assemblies 100, a cooling air blowing device 11 is disposed below the plurality of spinning assemblies 100, an oiling device 12 is disposed below the cooling air blowing device 11, and regions above the oiling device 12 and below the plurality of spinning assemblies 100 form a region to be detected 110;
the method comprises the following steps:
s1, adjusting the position of the thermal imager 14 to enable the imaging area of the thermal imager 14 to at least cover the area to be detected 110;
s2, acquiring a temperature distribution image of the area to be detected 110 through the thermal imager 14;
s3, preprocessing the thermal image obtained in the step S2, and acquiring an interested area of the thermal image;
and S4, acquiring the detection temperature of each pixel point in the region of interest as the detection temperature of the region to be detected 110, and judging whether the cooling air blowing equipment has a fault according to the detection temperature of the region to be detected.
The spinning device 1 comprises a spinning part 10, a plurality of spinning components 100 are arranged in the spinning part 10, the spinning components 100 comprise spinnerets, the spinnerets are arranged at the bottoms of the spinning components 100, and melts are sprayed into thin flows from micropores in the spinnerets of the spinning components 100 in the spinning process and then are gradually cooled to form nascent fibers 17, namely filaments. The primary fiber 17 is formed into a finished fiber 17 along the running path of the threadline through the oiling device 12, the yarn guide 13 and the like. The moving speed, diameter, temperature, viscosity, stress and internal structure of each particle on the strand silk are all constantly changed in the spinning process, and the mutual influence is very complicated. Especially, the variation is largest within a distance of 1m from a spinneret plate, and external conditions greatly affect fineness uniformity, strength elongation nonuniformity and back elongation performance of spun yarns, so that the conditions of cooling and blowing solidification are important, and the cooling speed is influenced by blowing temperature and blowing speed in addition to fineness of formed yarns. The process is a heat exchange process under a stress state. Therefore, the present invention focuses on performing omnibearing thermal radiation temperature field detection on the cooling and blowing equipment 11 in a large area range in real time to obtain real-time temperature field data of the cooling and blowing equipment 11, so that relevant process personnel and technicians can check the time-varying data of the temperature field of the cooling and blowing equipment 11 and the distribution data of the temperature field at a certain time, and provide a data base for subsequent analysis, and the present invention is convenient for performing fault diagnosis, maintenance prediction, process judgment, etc. on the cooling and blowing equipment 11. Specifically, the invention not only carries out omnibearing thermal radiation temperature field detection on the whole cooling and blowing equipment, but also visually displays the distribution condition of the temperature field of the cooling and blowing equipment, so that a craftsman can know the temperature value of a certain point and the fluctuation condition of the temperature value along with time, and can observe whether the temperature field distribution of the cooling and blowing equipment is uniform or not, and further evaluate the non-uniform degree of the temperature distribution of the fiber. The detection method is not only suitable for cooling air blowing equipment, but also other components needing omnibearing thermal radiation temperature field detection, especially components needing omnibearing measurement of the whole thermal radiation temperature field, and can be used for obtaining temperature field data.
The cooling air blowing device 11 is arranged below the spinning part 10, the spinning part can be a spinning box or a spinning component seat, the cooling air blowing device 11 can be a side air blowing device or a circular air blowing device, and specifically, the cooling air blowing device 11 is arranged above the oiling device 12 and below the spinning part 10 and is arranged on one side of the spinning part 10; the cooling air blowing device 11 performs cooling air blowing on the fibers 17 ejected from the spinning assembly 100, and the side of the cooling air blowing device 11 facing the fibers 17 can be regarded as an area to be detected 110; when the cooling air blowing device 11 is a circular air blowing device, three sides of the circular air blowing device can be surrounded below the spinning component 10, and the fibers 17 below the spinning components 100 are circularly blown to achieve the purpose of cooling. Specifically, the equipment maintainer can judge the cleaning degree of the filter screen and the damage degree of the honeycomb plate of the cooling and blowing equipment 11 according to the detection data and the uneven condition of the temperature field displayed by the visual picture, and select the best maintenance opportunity to maintain, so that the production and the product quality are not influenced, unnecessary maintenance work can be avoided, and the maintenance cost is reduced. The equipment designer can also verify whether the air outlet of the cooling air blowing equipment 11 is even or not and whether the air outlet has design defects or not according to the temperature detection result of the cooling air blowing equipment 11, and optimization and improvement are carried out.
According to the invention, the temperature field data of the cooling air blowing device 11 with a large area corresponding to the lower part of the spinning component 10 can be obtained in real time through the thermal imager 14, the change trend curve of the cooling air blowing device 11 along with time and the distribution condition of thermal radiation are visually displayed and analyzed, and whether the cooling air blowing device 11 is in fault or not is judged. The thermal imager 14 obtains the temperature field distribution of the to-be-detected area 110 of the cooling air blowing device 11 in a photographing mode, the temperatures of the spinning assembly 100 and the cooling air blowing device 11 are stable, and the variation is slow, so that the temperature field data of the cooling air blowing device 11 are obtained by intermittent photographing, the data volume of the temperature field data obtained in a video mode is reduced, the temperature field condition of the cooling air blowing device 11 can be accurately reflected, the frequency of the thermal imager 14 obtaining the temperature field data of the to-be-detected area 110 is different according to different spinning devices and different fibers 17, the frequency can be 1-2 min, 5min or 30s of photographing is carried out once, and the temperature field data of the to-be-detected area 110 can be obtained by photographing according to actual conditions.
Further, since the fiber 17 is on the side of the cooling air-blowing device 11, the region of interest in the step S3 is the region formed by the cooling air-blowing device 11 and the spun fiber 17 below the spinning assembly 100 and above the oiling device 12.
Through the design, the temperature field distribution of the cooling air blowing device 11 and the temperature change process of the fibers 17 from the spraying of the spinning assembly 100 to oiling can be obtained, and the cooling air blowing temperature field and the temperature change of the fibers 17 are related.
Further, as shown in fig. 5, after the detection temperature of each pixel point in the region of interest is obtained in step S4, N × M pixel point matrices are extracted from the region of interest to serve as the detection temperature of the target detection region, and whether the cooling and blowing device is faulty or not is determined according to the detection temperature of the target detection region;
preferably, the target detection area comprises the cooling air blowing device 11 and/or the spinning fibers 17.
The plurality of spinning assemblies 100 are uniformly arranged in the spinning component 10, the size of the spinning assemblies 100 and the distance between the spinning assemblies 100 are all fixed and regular, the photos shot by the thermal imaging camera 14 are also regular, and the technologists can obtain required data by adjusting related parameters.
The invention extracts the N multiplied by M pixel point matrixes from the region of interest, reduces the data volume, improves the data effectiveness, indirectly simplifies the data processing process, pertinently extracts the data and is beneficial to subsequent process personnel to obtain more accurate analysis results.
Further, when the target detection area is the cooling air blowing device 11, analyzing the thermal imaging image of the target detection area, judging whether the color change rules of the target detection area are consistent, and if so, judging that the cooling air blowing device normally operates; otherwise, the cooling-air blowing device is checked for faults.
If the temperature field of the cooling air blowing device 11 is uniformly distributed, the temperature of the fibers 17 sprayed out by the spinning assembly 100 is close to each other, theoretically, in the cooling air blowing process, the change rule of each fiber 17 and the change rule of the temperature field of the cooling air blowing device 11 are consistent, the color change of the temperature field obtained by the thermal imager 14 is also consistent, whether the abnormal change rule exists or not is judged by the color, the method is simple and convenient, if the color on a large scale is abnormal, the cooling air blowing device 11 is proved to be abnormal, and equipment maintenance personnel can disassemble, maintain and clean the fibers after on-site verification.
Further, when the target detection area is the cooling air blowing device 11, calculating a temperature value variance of the target detection area, when the variance is greater than a threshold value, the temperature fluctuation of the target detection area is large, and fault detection is performed on the cooling air blowing device, otherwise, the temperature fluctuation of the target detection area is small, and the cooling air blowing device 11 operates normally.
The change of the temperature field of the cooling-air blowing device 11 in the transverse direction and the change in the longitudinal direction should be uniform, if a temperature field with large fluctuation is found, it may indicate that the air outlet of the cooling-air blowing device 11 is blocked, and if the fluctuation is large, it indicates that the blockage of the cooling-air blowing device 11 is serious, and it needs further checking and processing by a technician.
Further, as shown in fig. 2, when the target detection area is the spinning fiber, acquiring a maximum value and a minimum value of pixel point temperatures of each row in an N × M pixel point matrix, and calculating a difference value between the maximum value and the minimum value of the pixel point temperatures of each row, if the difference value exceeds a set value, the spinning fiber temperature of the row is not uniform, and checking whether the cooling blower device is faulty, otherwise, the spinning fiber temperature of the row is uniform, and the cooling blower device operates normally.
The invention judges whether the same-row fibers are uniform or not through the above mode, theoretically, the temperature of each fiber 17 in the same horizontal position should be the same, but actually, the temperature of each fiber 17 in the same horizontal position fluctuates, the temperature fluctuation range of the same-row fibers 17 can be judged through the difference value between the maximum value and the minimum value of the same-row fibers 17, when the temperature fluctuation range of the same-row fibers 17 is within the set value, the fluctuating temperature does not have great influence on each fiber 17, when the temperature fluctuation range of the same-row fibers 17 exceeds the set value, the fiber 17 is influenced according to the past experience, the fiber 17 is abnormal, and by combining the detected temperature field data of the cooling and blowing equipment 11, whether the temperature field distribution of the cooling and blowing equipment 11 is not uniform or not is influenced on the temperature of the fiber 17 can be judged, if not, other reasons are further searched, if the temperature field distribution of the cooling and blowing equipment 11 is not uniform, whether the local part of the filter screen of the blowing opening of the cooling and blowing equipment 11 is deposited and blocked by dirt or not is further checked, and maintenance personnel is prompted to clear the dirt.
The invention quantitatively detects the temperature of the fiber 17 and the ambient temperature of the cooling air blowing, provides more accurate judgment basis, can accurately find the association relation between the abnormal fiber 17 and the temperature field of the cooling air blowing equipment 11, and inspects the reason for the generation of the abnormal fiber 17.
According to the data collected by the invention, the relevant process personnel can analyze the temperature field data of the area to be detected 110 acquired by the thermal imager 14 by using a mode judgment method, a machine learning method, a data analysis method and the like to obtain the fault, operation and maintenance prediction results and the like of the cooling air blowing device 11, so that the process personnel can conveniently take corresponding measures to solve the problems existing in the cooling air blowing device 11 in time.
Further, as shown in fig. 3 and 5B, when the target detection area is the spun fiber 17, the temperature of the pixel point in each row in the N × M pixel point matrix is obtained, the position of the freezing point 18 of each fiber 17 is determined, and the position of the oiling device 12 is adjusted according to the position of the freezing point 18 of each fiber 17.
By the method, a temperature change curve of the fiber 17 along the path from the spinneret plate of the spinning assembly 100 to the oiling device 12 can be obtained, and a craftsman can judge the position of the solidifying point 18 of the fiber 17 according to the temperature of each path of the fiber 17 to adjust and optimize the position of the oiling device 12, so that the stable spinning process is ensured, and the high-quality fiber 17 is produced. In practice, the solidification point 18 of each fibre 17 is approximately in a straight line, so that the position of the preparation device 12 is adjusted. As shown in fig. 5A, the fiber freezing point in the present invention is below 23 c, and the oiling device is placed below the freezing point.
Further, the temperature of the pixel points in each row of the target detection area and the temperature of the pixel points in each column of each fiber 17 are drawn as temperature change curves to be respectively displayed visually.
The pixel point detection temperature of the target detection area is visually displayed, so that on one hand, the temperature change rule is visually displayed, the detection is convenient for process personnel to check, and on the other hand, the obtained temperature field data is convenient to analyze.
Based on the temperature of the to-be-detected area obtained by the method, a user can randomly call the required area as a target detection area for more specific analysis; when the cooling air blowing equipment and the spinning fibers are used as target detection areas, whether the cooling air blowing equipment is in fault or not can be judged through correlation analysis, theoretically, a temperature field of the cooling air blowing equipment has certain correlation with temperature data of the spinning fibers, specifically, the temperature of each spinning fiber on the path from a spinneret plate of the spinning assembly 100 to the oiling device 12 has correlation with column data formed by all points of the adjacent cooling air blowing equipment, when the cooling air blowing equipment is in fault, the uniformity of the temperature field of the cooling air blowing equipment can be influenced due to the blockage of an air outlet or the unclean blowing filter screen, so that local temperature abnormity is caused, the correlation between the temperature field of the cooling air blowing equipment and the temperature of the spinning fibers is damaged, and then whether the cooling air blowing equipment is in fault or not is judged. In addition, the process personnel can extract more pixel points in the area with larger temperature change and extract less pixel points in the area with smaller temperature change according to actual needs, and the modes for acquiring the target area data are various and flexible and are not listed.
The invention also provides a spinning device, as shown in fig. 4 to 6, comprising the fault detection method of the cooling air blowing device.
The spinning equipment 1 adopts the temperature detection method to detect the temperature field distribution of the cooling air blowing equipment 11 and the temperature of the fiber 17, so as to find the abnormal temperature of the cooling air blowing equipment and the spinning fiber in time, avoid the phenomena of yarn breakage, yarn floating and the like of the fiber 17 or the problem of broken yarn of a product, and ensure the quality of the spinning fiber, and the spinning equipment can be various spinning machines used for spinning in the chemical fiber industry.
Further, as shown in fig. 4, the spinning apparatus 1 comprises,
a thermal imager 14 for detecting the temperature of the region 110 to be inspected;
the support 15, the thermal imager 14 is arranged on the support 15, and the support 15 drives the thermal imager 14 to move so as to adjust the detection area of the thermal imager 14;
the control device 16 is connected with the thermal imaging camera 14 and the support 15, and the control device 16 controls the thermal imaging camera 14 to detect the temperature and controls the support 15 to move.
According to the invention, the thermal imager 14 can be arranged on the spinning equipment 1, as shown in fig. 6, the support 15 can be a rotatable support 15 such as a pan-tilt, and the like, and also can be fixed on the ground, so that the thermal imager 14 can rotate on the pan-tilt horizontally and in a pitching manner, and the support 15 can also be in any other form of structure capable of driving the thermal imager 14 to rotate in multiple directions. The specific structure of the bracket 15 will not be described in detail herein. The thread guide 13 is arranged below the preparation device 12, for example, in the present invention the fibre solidification point is below 23 ℃, and the preparation device is arranged below the solidification point.
The thermal imager 14 is connected with a 24V power supply and is connected with a control device 16 by interfaces such as RS485 and Ethernet according to modbus, profibus, modbus-tcp and profinet communication protocols to transmit signals, and the control device 16 can be a PLC, an industrial personal computer, an automatic control instrument or an embedded control module; the thermal imager can also comprise an upper computer 161, the upper computer 161 is provided with visual software (an upper management system) and analysis software, the upper management system is a wincc7.0 configuration management system, industrial configuration software, an MES management system or other workshop management systems, and the like, the thermal imager 14 transmits the acquired temperature field data to the control equipment 16 and/or further transmits the acquired temperature field data to the upper computer 161, when the upper computer 161 is included, the thermal imager 14 can be connected with the PLC control cabinet 160 and the upper computer 161, or the thermal imager 14 is connected with the PLC control cabinet 160, the PLC control cabinet 160 is connected with the upper computer 161, the data acquired by the thermal imager 14 is transmitted to the upper computer 161 through the PLC control cabinet 160, and the upper computer 161 stores and manages the temperature field data acquired by the thermal imager 14; specifically, the thermal infrared imager may be electrically connected to the upper computer 161, and the upper computer 161 may have a display device for displaying a detection result obtained by the thermal infrared imager; the control device 16 may further include a data storage device, and the data storage device is connected to the upper computer 161; the temperature image, the temperature data and the like acquired by the thermal infrared imager can be stored in a memory inside the thermal infrared imager, and the acquired temperature image, the acquired temperature data and the like can also be transmitted to a data storage device, and after all, the storage space of the data storage device is larger. The present invention completes the processes of analysis of the detection result, etc. by the upper computer 161 and displays the result by the display device. The data storage device is matched with the analysis software for use; the temperature field data of the cooling and blowing equipment 11 collected by the thermal imager 14 is stored in the data storage equipment for being called by analysis software and visualization software; and the visualization software displays the analysis result of the analysis software through a display device or displays the temperature change trend curve. The visualized display content of the invention comprises a thermal imaging image, a data table (Excel), a flow chart, a data curve and the like.
The invention utilizes infrared thermal imaging and can also utilize other non-contact temperature measuring instruments to measure the temperature of the whole temperature field of the cooling and blowing equipment 11. The process personnel can know the whole cooling process of each spindle fiber 17 and the difference of the cooling state of each spindle fiber 17, and key data are supplemented for the process personnel; the operation and maintenance time of the cooling blowing equipment 11 can be predicted, the maintenance cost is reduced, and the product quality is ensured; the design defect of the cooling air blowing device 11 can be found, and the cooling air blowing device 11 is optimized and improved.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A fault detection method of a cooling air blowing device is characterized in that: the spinning equipment comprises a plurality of spinning assemblies, cooling air blowing equipment is arranged below the spinning assemblies, an oiling device is arranged below the cooling air blowing equipment, and an area above the oiling device and below the spinning assemblies form an area to be detected;
the method comprises the following steps:
s1, adjusting the position of the thermal imager to enable the imaging area of the thermal imager to at least cover the area to be detected;
s2, acquiring a temperature distribution image of the area to be detected through a thermal imager;
s3, preprocessing the thermal image obtained in the step S2, and acquiring an interested area of the thermal image;
s4, obtaining the detection temperature of each pixel point in the region of interest as the detection temperature of the region to be detected, and judging whether the cooling and blowing equipment has a fault according to the detection temperature of the region to be detected.
2. A fault detection method of a cooling-air blowing apparatus according to claim 1, characterized in that: the region of interest in the step S3 is a region formed by the cooling air blowing device and the spun fibers below the spinning assembly and above the oiling device.
3. A fault detection method of a cooling-air blowing apparatus according to claim 2, characterized in that: the step S4 is to extract an N × M pixel point matrix from the region of interest after acquiring the detection temperature of each pixel point in the region of interest, to be used as the detection temperature of the target detection region, and to determine whether the cooling blower device is faulty or not according to the detection temperature of the target detection region;
preferably, the target detection area comprises the cooling air blowing device and/or the spun fibers.
4. A fault detection method of a cooling-air blowing apparatus according to claim 3, characterized in that: when the target detection area is the cooling air blowing equipment, analyzing the thermal imaging image of the target detection area, judging whether the color change rules of the target detection area are consistent, and if so, judging that the cooling air blowing equipment normally operates; otherwise, the cooling-air blowing device is checked for faults.
5. A fault detection method of a cooling-air blowing apparatus according to claim 3, characterized in that: and when the target detection area is the cooling air blowing equipment, calculating the temperature value variance of the target detection area, when the variance is greater than a threshold value, the temperature fluctuation of the target detection area is large, and fault detection is carried out on the cooling air blowing equipment, otherwise, the temperature fluctuation of the target detection area is small, and the cooling air blowing equipment operates normally.
6. A fault detection method of a cooling-air blowing apparatus according to claim 3, characterized in that: and when the target detection area is the spinning fiber, acquiring the maximum value and the minimum value of the pixel point temperature of each row in the NxM pixel point matrixes, calculating the difference value between the maximum value and the minimum value of the pixel point temperature of each row, if the difference value exceeds a set value, the spinning fiber temperature of the row is uneven, checking whether the cooling air blowing equipment fails, otherwise, the spinning fiber temperature of the row is even, and the cooling air blowing equipment normally operates.
7. A fault detection method of a cooling-air blowing apparatus according to claim 3, characterized in that: and when the target detection area is the spinning fiber, obtaining the temperature of each row of pixel points in the N multiplied by M pixel point matrixes, determining the position of the solidifying point of each fiber, and adjusting the position of an oiling device according to the position of the solidifying point of each fiber.
8. A fault detection method of a cooling-air blowing apparatus according to claim 6 or 7, characterized in that: and drawing the temperature of the pixel points of each row of the target detection area and the temperature of the pixel points of each column of each fiber into temperature change curves, and respectively carrying out visual display.
9. A spinning apparatus, characterized by: a fault detection method for a cooling-air blowing device comprising according to any of the preceding claims 1-8.
10. A spinning apparatus according to claim 9, characterised in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the thermal imager is used for detecting the temperature of the area to be detected;
the thermal imager is arranged on the bracket, and the bracket drives the thermal imager to move so as to adjust the detection area of the thermal imager;
the control equipment, the thermal imaging appearance with the support connection controlgear, controlgear control the thermal imaging appearance carries out temperature detection and control the support motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111131006.9A CN113899574A (en) | 2021-09-26 | 2021-09-26 | Fault detection method of cooling air blowing equipment and spinning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111131006.9A CN113899574A (en) | 2021-09-26 | 2021-09-26 | Fault detection method of cooling air blowing equipment and spinning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113899574A true CN113899574A (en) | 2022-01-07 |
Family
ID=79029339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111131006.9A Pending CN113899574A (en) | 2021-09-26 | 2021-09-26 | Fault detection method of cooling air blowing equipment and spinning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113899574A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107209127A (en) * | 2015-01-09 | 2017-09-26 | 欧瑞康纺织有限及两合公司 | The method and apparatus that quality monitoring is carried out to the fiber webs of multiple melt-spuns of tow |
| CN107424182A (en) * | 2017-05-03 | 2017-12-01 | 北京海顿中科技术有限公司 | A kind of thermal imaging local monitoring device and method |
| CN109558852A (en) * | 2018-12-04 | 2019-04-02 | 深圳码隆科技有限公司 | A kind of spinning machine fault monitoring system based on image recognition technology |
| CN109682164A (en) * | 2018-12-29 | 2019-04-26 | 合肥美的电冰箱有限公司 | Control method, device and the refrigeration equipment of refrigeration equipment |
| CN110708449A (en) * | 2019-10-31 | 2020-01-17 | 深圳市亮视智能工程有限公司 | Thermal imaging control device |
| CN213072877U (en) * | 2020-11-02 | 2021-04-27 | 江苏钛科圈物联网科技有限公司 | Outdoor thermal imaging double-spectrum camera |
-
2021
- 2021-09-26 CN CN202111131006.9A patent/CN113899574A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107209127A (en) * | 2015-01-09 | 2017-09-26 | 欧瑞康纺织有限及两合公司 | The method and apparatus that quality monitoring is carried out to the fiber webs of multiple melt-spuns of tow |
| CN107424182A (en) * | 2017-05-03 | 2017-12-01 | 北京海顿中科技术有限公司 | A kind of thermal imaging local monitoring device and method |
| CN109558852A (en) * | 2018-12-04 | 2019-04-02 | 深圳码隆科技有限公司 | A kind of spinning machine fault monitoring system based on image recognition technology |
| CN109682164A (en) * | 2018-12-29 | 2019-04-26 | 合肥美的电冰箱有限公司 | Control method, device and the refrigeration equipment of refrigeration equipment |
| CN110708449A (en) * | 2019-10-31 | 2020-01-17 | 深圳市亮视智能工程有限公司 | Thermal imaging control device |
| CN213072877U (en) * | 2020-11-02 | 2021-04-27 | 江苏钛科圈物联网科技有限公司 | Outdoor thermal imaging double-spectrum camera |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4537048B2 (en) | Spinning preparation machines having a machine housing, especially devices such as cards and cleaners | |
| TW202022516A (en) | Image recognition technology-based spinning machine fault monitoring system and method | |
| EP2159182B1 (en) | Running yarn line inspection method and carbon fiber manufacturing method using thereof | |
| EP3293595A1 (en) | An integrated system and method for online monitoring and offline testing in a textile unit | |
| CN112111824A (en) | Method for optically monitoring a textile machine, monitoring device and computer program | |
| CN107656986A (en) | Microdefect integrates method for early warning and device | |
| US20220170189A1 (en) | A device and a method for real-time identification of defects in fabrics, during weaving | |
| CN110318245A (en) | A kind of machine vision fabric inspecting system being integrated on loom | |
| CN111691028A (en) | Take monitored control system's fly frame | |
| BRPI1011291B1 (en) | MONITORING SYSTEM FOR AT LEAST ONE APPARATUS, APPARATUS FOR PRODUCING AND / OR PROCESSING A WEAPON OF MATERIAL AND METHOD FOR MONITORING AT LEAST ONE APPARATUS | |
| CN107815761A (en) | For the measuring system for the machine for processing continuous strip textile material | |
| CN210796704U (en) | Detection apparatus for chemical fiber spinning technology silk road | |
| CN113899574A (en) | Fault detection method of cooling air blowing equipment and spinning equipment | |
| CN110308147B (en) | Intelligent inspection method for chemical fiber spinning process yarn path | |
| DE19855588A1 (en) | Method and device for evaluating the effect of yarn properties on the appearance of textile fabrics | |
| CN105388877B (en) | One kind being based on dyeing and finishing industry integration supervisory systems | |
| CN110220913A (en) | A kind of intelligent patrol detection device of synthetic fiber spinning technique the Silk Road | |
| CN107663684B (en) | Resolver and spinning machine | |
| CN113758579B (en) | Method for detecting temperature of spinning assembly and spinning equipment | |
| CN210775245U (en) | Intelligent inspection device for chemical fiber spinning process yarn path | |
| CN117215265A (en) | Chemical fiber superior rate improving method based on process monitoring and control | |
| CN105386175B (en) | A kind of fly frame rove uniformity on-line measuring device and detection method | |
| DE102009005433B4 (en) | Method and device for diagnosing and controlling the functional sequences of a glass forming machine | |
| CN103789855A (en) | Melt spinning method using X-ray for online synchronous detection | |
| CN203069527U (en) | Textile defective cloth detection camera and detection system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |