A cable continuous production device

Abstract

The present invention relates to the field of cable heat treatment technology, and specifically to a cable continuous production device; temperature control groups consisting of temperature sensors and fans are respectively configured at different sampling positions in the cavity of the furnace body and the heating chamber, and all temperature control groups are connected to a temperature control module. The temperature control module obtains the temperature data of each temperature sensor at the sampling position in real time, and adjusts the operating power of the fan based on the temperature data of different sampling positions. When the pressure is released, different temperature change areas are determined according to the community monitoring division of the temperature change at different sampling positions, and the fan operating power is adjusted according to the temperature change in the temperature change area, so as to achieve temperature balance control at different sampling positions. It can improve the heat balance in the furnace and avoid the influence of temperature change differences on the consistency quality of the produced cables.

Description

Technical Field

[0001] The invention relates to the technical field of cable heat treatment, and in particular to a cable continuous production device. Background Art

[0002] In the existing continuous annealing device for cable production, the internal pressure regulation mechanism is crucial to maintain uniform hot air flow and annealing effect. The prior art CN211227224U proposes a continuous annealing device for cable production. When the pressure in the furnace exceeds the set threshold, the pressure is released through the pressure relief hole to avoid safety problems and equipment damage.

[0003] In this way, the pressure release process when the pressure relief hole is opened will disrupt the stability of the hot air flow in the annealing furnace, which may cause the cable to suffer different degrees of heat exchange at different positions in the furnace, resulting in temperature changes at different positions, affecting the consistency of cable production and thus leading to cable production quality problems. Summary of the invention

[0004] In order to solve the technical problem in the related art that temperature variation differences occur at different positions, affecting the consistency of cable production, and thus causing insufficient cable production quality, the present invention provides a cable continuous production device, and the technical solution adopted is as follows:

[0005] The present invention proposes a cable continuous production device, comprising an annealing furnace, wherein the annealing furnace comprises a furnace body and a heating chamber, wherein temperature control groups consisting of temperature sensors and fans are respectively arranged in the cavity of the furnace body and at different sampling positions in the heating chamber, wherein all the temperature control groups are connected to a temperature control module, wherein the temperature control module obtains temperature data of each temperature sensor at the sampling position in real time, and adjusts the operating power of the fan based on the temperature data at different sampling positions, so as to realize temperature balance control at the sampling positions when the pressure is released;

[0006] The method for adjusting the operating power of the fan based on the temperature data at different sampling positions includes:

[0007] Obtain the temperature data of each temperature sensor at different times during the pressure release period as a temperature sequence; take the temperature data with the largest value at the current moment as the central temperature value;

[0008] Determine the degree of temperature anomaly at each sampling position at the current moment according to the numerical difference between the temperature data of different sampling positions at the current moment and the central temperature value;

[0009] According to the changes in the temperature series of different temperature sensors, the consistency of the temperature changes at any two sampling locations is determined;

[0010] Combining the degree of consistency of the temperature changes and the degree of temperature anomaly at any two sampling locations, the community monitoring division of the temperature changes at different sampling locations is realized, and different temperature change areas are determined;

[0011] Based on the temperature data of different temperature change areas at the current moment, the fan operating power in the corresponding temperature change area is adjusted.

[0012] Furthermore, it also includes a pressure relief hole, the heating chamber includes a heating wire, and the sampling positions of the temperature control group include at least: the pressure relief hole sampling position, different sampling positions of the heating wire, the top and bottom sampling positions of the furnace body, and the inner wall of the cavity.

[0013] Further, the determining of the temperature anomaly degree of each sampling position at the current moment according to the numerical difference between the temperature data of different sampling positions at the current moment and the central temperature value includes:

[0014] At the current moment, the absolute value of the difference between the temperature data at any sampling position and the central temperature value is calculated, negatively correlated and normalized as the temperature anomaly degree.

[0015] Furthermore, determining the consistency of temperature changes between any two sampling positions according to changes in temperature sequences of different temperature sensors includes:

[0016] Determine the product of the mean and variance of all temperature data in the temperature sequence of each temperature sensor as a characteristic indicator of temperature change;

[0017] Use the DTW algorithm to calculate the temperature series of any two temperature sensors and determine the DTW values ​​corresponding to the two temperature series;

[0018] The degree of consistency of temperature change is determined based on the difference in temperature change characteristic indicators and DTW values ​​of any two temperature sequences.

[0019] Furthermore, determining the consistency of temperature change according to the temperature change characteristic index difference and DTW value of any two temperature sequences includes:

[0020] The absolute value of the difference between the temperature change characteristic indexes of any two temperature series is taken as the temperature change difference characteristic value;

[0021] The product of the temperature change difference characteristic value and the DTW value is calculated, and the opposite of the product value is normalized to the maximum and minimum values ​​to obtain the degree of consistency of the temperature change.

[0022] Furthermore, combining the degree of consistency of temperature change and the degree of temperature anomaly, the community monitoring division of temperature change at different sampling locations is realized, and different temperature change areas are determined, including:

[0023] The difference in the degree of temperature anomaly at two sampling locations is calculated, and the opposite number of the difference is normalized to the maximum and minimum values ​​to determine the anomaly similarity index;

[0024] Determine the temperature change similarity between any two sampling locations at the current moment according to the temperature change consistency degree and the abnormal similarity index;

[0025] Based on the SLPA algorithm, all sampling locations are divided into different sampling location communities according to the similarity of the temperature changes between any two sampling locations;

[0026] The device area consisting of all sampling positions belonging to the same sampling position community is regarded as the same temperature change area.

[0027] Further, based on the temperature data of different temperature change areas at the current moment, the fan operating power in the corresponding temperature change area is adjusted, including:

[0028] Calculate the regional temperature mean of the temperature data at all locations within the same temperature variation region;

[0029] The fan operating power in the corresponding temperature change area is determined according to the regional temperature average, wherein the temperature average is positively correlated with the fan operating power.

[0030] Further, determining the fan operating power in the corresponding temperature change area according to the temperature mean value includes:

[0031] The average temperature of the region is normalized to the maximum and minimum values ​​as the temperature power influence coefficient;

[0032] The product of the temperature power influence coefficient and the rated power of the fan is calculated as the fan operating power.

[0033] Furthermore, it also includes a self-starting fan, which is directed toward the heating chamber and is used to adjust the temperature distribution of the entire annealing furnace according to the temperature differences of all temperature change areas.

[0034] Further, adjusting the temperature distribution of the entire annealing furnace according to the temperature differences of all temperature change areas includes:

[0035] When the variance of the regional temperature means of all temperature change regions is greater than a preset variance threshold, the self-starting fan is started and stopped when the variance of the regional temperature means is less than or equal to the preset variance threshold.

[0036] The present invention has the following beneficial effects:

[0037] The embodiment of the present invention aims to solve the problem of inconsistent temperature changes in an annealing furnace due to environmental influences during the pressure release process. A temperature sensor and a fan are configured. The temperature sensor is used to perform temperature detection. The temperature detection results are used to divide the community to obtain different temperature change areas. The operating power of the fan is controlled according to the overall effect of the temperature change area, thereby improving the heat balance in the furnace and preventing the temperature change difference from affecting the consistent quality of the produced cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 A schematic diagram of a continuous annealing device for cable production provided by one embodiment of the present invention;

[0040] Figure 2 A structural diagram of a cable continuous production device provided by one embodiment of the present invention;

[0041] Figure 3 A schematic diagram of the structure of a temperature control group provided by an embodiment of the present invention;

[0042] Figure 4 A flow chart of an operating power adjustment method provided by an embodiment of the present invention;

[0043] The numbers in the figure are:

[0044] The furnace body 1; the fixing block 2; the sliding sleeve 3; the fixing rod 4; the spring 5; the blower 6; the connecting rod 7; the top plate 8; the clamping block 14; the air outlet pipe 15; the heating wire 16; the heat recovery plate 17; the heating chamber 18; the pressure relief hole 19 and the cavity groove 20. DETAILED DESCRIPTION

[0045] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of a cable continuous production device proposed according to the present invention, its specific implementation, structure, features and effects, in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0046] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0047] See also Figure 1 , which is a schematic diagram of a continuous annealing device for cable production provided by an embodiment of the present invention, comprising: a furnace body 1; a fixing block 2; a sliding sleeve 3; a fixing rod 4; a spring 5; a blower 6; a connecting rod 7; a top plate 8; a clamping block 14; an air outlet pipe 15; a heating wire 16; a heat recovery plate 17; a heating chamber 18; a pressure relief hole 19 and a cavity 20.

[0048] The working principle of the continuous annealing device for cable production is as follows: first, turn on the power supply to energize the inside of the device, and then pass the cable through the cable inlet pipe on one side of the furnace body 1, and then pass it out from the cable outlet pipe on the other side, so that the cable can pass through the furnace body 1 evenly. During use, the blower 6 works and evenly supplies air to the heating chamber 18 through the pipeline. At the same time, the heating wire 16 is energized and heated, and the heat is blown out from the air outlet pipe 15, so that the temperature inside the furnace body 1 is stable, and the cable passing through the furnace body 1 is evenly heated. At this time, the cavity 20 opened in the furnace body 1 can reduce the heat loss rate inside the furnace body 1, and the hot air flow that has dropped to the bottom is refluxed to the top through the heat recovery plate 17, so as to circulate the hot air, thereby better maintaining the temperature inside the furnace constant. When the furnace body 1 is inside When the pressure is too high, the pressure first lifts the block 14, so that the block 14 drives the top plate 8 to move upward, and then the top plate 8 drives the sliding sleeve 3 to slide on the fixed rod 4 through the connecting rod 7, so that the sliding sleeve 3 and the fixed block 2 squeeze the spring 5 against each other. At this time, the top plate 8 no longer blocks the pressure discharge hole 19, so that the heat is discharged from the pressure discharge hole 19. When the pressure is reduced, the top plate 8 blocks the pressure discharge hole 19 again under the action of the spring 5, and then the pressure is released stably and efficiently, preventing the top plate 8 from shaking, and improving the stability of the device. At the same time, when the hot gas is discharged from the pressure discharge hole 19, part of the hot gas enters the heat recovery pipe and is stored, and the heat in the heat recovery pipe can once again enhance the thermal insulation performance of the cavity 20. At the same time, the hot gas can flow into the furnace body 1 again, further reducing the heat loss inside the furnace body 1.

[0049] In the existing continuous annealing device for cable production, the internal pressure regulation mechanism is crucial to maintain uniform hot air flow and annealing effect. When the pressure in the furnace exceeds the set threshold, the pressure must be released through the pressure relief hole to avoid safety problems and equipment damage. At this time, the pressure release process of the pressure relief hole opening will disrupt the stability of the hot air flow in the annealing furnace, and the cable may suffer different degrees of heat exchange at different positions in the furnace, which will lead to cable production quality problems.

[0050] The specific scheme of a cable continuous production device provided by the present invention is described in detail below with reference to the accompanying drawings.

[0051] See also Figure 2, which shows a structural diagram of a cable continuous production device provided by an embodiment of the present invention, mainly configuring temperature control modules at different sampling positions in the cavity of the furnace body and the heating chamber, and the temperature control module includes a temperature sensor and a fan.

[0052] It should be noted that in some embodiments of the present invention, a temperature sensor and a fan are connected to form a temperature control group, or a temperature sensor and multiple fans are connected to form a temperature control group, that is, the number and power of the fans are set according to actual needs. Figure 3 , which is a schematic diagram of the structure of a temperature control group provided by an embodiment of the present invention.

[0053] It should be noted that the fan in the embodiment of the present invention is a high-temperature resistant fan. Since the temperature in the annealing furnace during the annealing process is usually between 350 degrees Celsius and 380 degrees Celsius, the temperatures corresponding to different sampling positions in the cavity of the furnace body and the heating chamber are usually in this temperature range. A fan that can withstand 400 degrees Celsius is required. The corresponding high-temperature resistant industrial fan in the prior art can achieve this function.

[0054] The temperature sensor is used to obtain the temperature data of the sampling position, and the fan adjusts its operating power in response to the control instructions issued by the temperature control module. It should be noted that during the pressure release process, the temperature detected by the temperature sensor may have a large difference, and the temperature at different sampling positions is not uniform. At this time, the operation of the fan can realize heat circulation and avoid the problem of temperature imbalance during the pressure release process.

[0055] Furthermore, in some embodiments of the present invention, the sampling positions of the temperature control group include at least: a pressure relief hole sampling position, different sampling positions of the heating wire, top and bottom sampling positions of the furnace body, and an inner wall of the cavity.

[0056] The different sampling positions of the heating wire can be specifically configured with a sampling position at the front section, the middle section and the rear section of the heating wire. The inner wall of the cavity is the inner wall position of the furnace body close to the cavity.

[0057] In other embodiments of the present invention, temperature control groups may also be configured at different node positions of the furnace body and the heating chamber, and the configuration is based on the actual structure of the annealing furnace, and there is no limitation to this.

[0058] The temperature control module may specifically include a processor, a memory, and a computer program stored in the memory and executable on the processor. The processor may specifically be, for example, a CPU for performing calculation analysis, and the memory is also used to store temperature data of all sampling positions. After receiving the temperature data of all sampling positions, the temperature control module analyzes the temperature changes at different sampling positions to determine the operating power of the fan at each sampling position, and realizes heat circulation at different sampling positions through the operation of the fan, thereby realizing temperature balance control.

[0059] Among them, see Figure 4 , Figure 4 A flow chart of an operating power adjustment method provided by an embodiment of the present invention includes:

[0060] S101: Acquire the temperature data of each temperature sensor at different times during the pressure release period as a temperature sequence; and take the temperature data with the largest value at the current moment as the central temperature value.

[0061] Among them, the sampling moments of all temperature sensors are the same periodic moments, that is, temperature data is acquired at a certain sampling period, and the sampling period can be specifically 1 second, that is, when pressure release is detected, the temperature sensor is controlled to sample temperature data every 1 second, thereby obtaining a temperature sequence.

[0062] The current moment is the last moment corresponding to the temperature sequence. The temperature data with the largest value at the current moment is taken as the central temperature value, and the central temperature value is the temperature value corresponding to the area with the highest temperature.

[0063] S102: Determine the temperature anomaly degree of each sampling position at the current moment according to the numerical difference between the temperature data of different sampling positions at the current moment and the central temperature value.

[0064] Among them, the degree of temperature anomaly indicates the abnormal situation of the corresponding sampling position compared with the central temperature value at the current moment. The larger the temperature data value of any sampling position, the smaller the temperature difference between the central temperature value and the corresponding temperature data, that is, the temperature at the sampling position is too high. The degree of temperature anomaly is used to characterize the characteristic of too high temperature.

[0065] According to the numerical difference between the temperature data of different sampling positions at the current moment and the central temperature value, the temperature anomaly degree of each sampling position at the current moment is determined, including: at the current moment, calculating the absolute value of the difference between the temperature data of any sampling position and the central temperature value, negatively mapping and normalizing it as the temperature anomaly degree.

[0066] Among them, the negative correlation mapping indicates a mapping relationship in which the dependent variable decreases as the independent variable increases, that is, the larger the absolute value of the difference between the temperature data and the central temperature value, the smaller the temperature anomaly. Specifically, the opposite of the absolute value of the difference can be calculated, and the opposite can be normalized to the maximum and minimum values ​​to obtain the temperature anomaly.

[0067] It is understandable that when the temperature anomaly is greater, it means that the temperature at the corresponding position is too high and may still be in a strong pressure release state, that is, the pressure release may still be in a strong effect stage, and the overall heat flow is unstable.

[0068] S103: Determine the consistency of temperature changes at any two sampling positions according to changes in temperature sequences of different temperature sensors.

[0069] Among them, the consistency degree of temperature change represents the consistency characteristics of the temperature changes corresponding to the two sampling positions. It should be noted that the temperature change is diffusive, that is, when the temperature at a certain position is too high, the temperature of the adjacent position or the affected position will continue to rise. Based on this, the consistency degree of temperature change can be obtained by performing consistency analysis on the temperature change characteristics through the consistency degree.

[0070] Furthermore, in some embodiments of the present invention, the degree of consistency of temperature changes at any two sampling positions is determined based on changes in temperature sequences of different temperature sensors, including: determining the product of the mean and variance of all temperature data in the temperature sequence of each temperature sensor as a temperature change characteristic indicator; using the DTW algorithm to calculate the temperature sequences of any two temperature sensors to determine the DTW values ​​corresponding to the two temperature sequences; and determining the degree of consistency of temperature changes based on the difference in the temperature change characteristic indicators of any two temperature sequences and the DTW value.

[0071] Among them, the mean of the temperature data represents the temperature size characteristics of the corresponding temperature sequence as a whole, and the variance represents the degree of dispersion of the overall distribution. The product of the mean and the variance is used as the temperature change characteristic indicator. The larger the value of the temperature change characteristic indicator, the larger the corresponding temperature and the greater the degree of temperature change.

[0072] Among them, the DTW algorithm is a dynamic time warping algorithm, which is an existing analysis algorithm. It obtains the DTW values ​​of two time series. The larger the DTW value, the greater the difference between the two time series. Therefore, the larger the DTW value of the two temperature series, the more inconsistent the changes.

[0073] In combination with the above analysis, the degree of consistency of temperature change is specifically calculated. Furthermore, in some embodiments of the present invention, the degree of consistency of temperature change is determined based on the difference in temperature change characteristic indicators and the DTW value of any two temperature sequences, including: taking the absolute value of the difference between the temperature change characteristic indicators of any two temperature sequences as the temperature change difference characteristic value; calculating the product value of the temperature change difference characteristic value and the DTW value, and normalizing the opposite of the product value to the maximum and minimum values ​​to obtain the degree of consistency of temperature change.

[0074] The differences in the embodiments of the present invention can be calculated using the absolute value of the difference. Thus, the absolute value of the difference between the temperature change characteristic indicators of the two temperature sequences is calculated to obtain the temperature change difference characteristic value. The larger the temperature change difference characteristic value, the greater the difference in the overall temperature value and the discrete distribution characteristics of the two temperature sequences. That is, the lower the consistency of the temperature change.

[0075] The larger the DTW value of the two temperature series, the more inconsistent the changes. The product of the temperature change difference characteristic value and the DTW value is calculated. The larger the product value, the lower the corresponding consistency. The opposite of the product value is normalized to the maximum and minimum values ​​to obtain the degree of consistency of the temperature change.

[0076] S104: Combining the consistency of temperature changes and the temperature anomaly of any two sampling locations, the community monitoring division of temperature changes at different sampling locations is realized, and different temperature change areas are determined.

[0077] In the embodiment of the present invention, community monitoring division is to divide all locations into similarity communities, and the division criteria are the degree of consistency of temperature changes and the degree of temperature anomaly.

[0078] Furthermore, in some embodiments of the present invention, the degree of consistency of temperature change and the degree of temperature anomaly are combined to realize the community monitoring division of temperature changes at different sampling locations, and determine different temperature change areas, including: calculating the difference value of the temperature anomaly degree of two sampling locations, and normalizing the opposite of the difference value to the maximum and minimum values ​​to determine the anomaly similarity index; determining the temperature change similarity of any two sampling locations at the current moment according to the degree of consistency of temperature change and the anomaly similarity index; based on the SLPA algorithm, dividing all sampling locations into different sampling location communities according to the temperature change similarity of any two sampling locations; and treating the device area composed of all sampling locations belonging to the same sampling location community as the same temperature change area.

[0079] Among them, the temperature change similarity represents the temperature change similarity characteristic value of the two sampling locations obtained by combining the consistency of temperature change and the abnormal similarity index, and the temperature anomaly degree is directly analyzed based on the numerical value of the temperature data itself at the current moment. The greater the difference in the temperature anomaly degree, the greater the temperature difference between the two sampling locations at the current moment, and the smaller the overall change similarity. The opposite number is normalized to the maximum and minimum values ​​to determine the abnormal similarity index, which represents the similarity index of the temperature value at the current moment.

[0080] The larger the numerical value of the temperature change consistency degree, the more consistent the temperature change is. Therefore, the present invention can directly calculate the normalized value of the product of the temperature change consistency degree and the abnormal similarity index as the temperature change similarity, or calculate the normalized value of the temperature change consistency degree and the abnormal similarity index and value as the temperature change similarity, and there is no limitation on this.

[0081] Among them, community monitoring division can specifically use the SLPA (Speaker-Listener Label Propagation Algorithm) algorithm, which is an algorithm for community monitoring and can be used to identify community structure.

[0082] In an embodiment of the present invention, each sampling position is used as a node of the graph structure in the SLPA algorithm, and the temperature sequence is used as an edge value. A triangulated network structure is constructed for all sampling positions by means of three-dimensional spatial coordinates, and all temperature curves are classified by temperature change similarity, and the temperature sequence with a temperature change similarity greater than 0.7 is regarded as one category. In the final classification result, each temperature sequence belongs to only one category. The corresponding nodes of the temperature sequence belonging to the same category are assigned the same label, and then multiple "communities" are obtained through the SLPA algorithm. Each "community" contains multiple sampling position nodes, and the spatial positions are close, indicating that the heat exchange capacity of these sampling positions is similar, that is, when the pressure is released, it will have a similar impact on multiple sampling positions of the same "community". The "community" obtained by division can be called a temperature change area.

[0083] Among them, the temperature change area is a similarity area division based on the actual temperature change. It can be a spherical three-dimensional space range with a radius of a preset length (for example, 3 cm) for each sampling position, or it can also be the minimum spatial range including all sampling positions in the same "community", that is, the spatial area obtained by connecting all sampling positions in the same "community". The community division of the embodiment of the present invention can effectively cope with different temperature change scenarios, divide according to the actual temperature change, avoid the subjective problems caused by directly performing average regional division, or simply performing regional division according to components, and improve the reliability of the overall community division.

[0084] S105: Based on the temperature data of different temperature change areas at the current moment, the fan operating power in the corresponding temperature change area is adjusted.

[0085] In the embodiment of the present invention, after the temperature change region is determined, the same temperature change region may represent a region with similar temperature change. At this time, the fan operating power of different temperature change regions may be adjusted according to the temperature value at the current moment.

[0086] Furthermore, in some embodiments of the present invention, based on the temperature data of different temperature change zones at the current moment, the fan operating power in the corresponding temperature change zone is adjusted, including: calculating the regional temperature mean of the temperature data of all positions in the same temperature change zone; determining the fan operating power in the corresponding temperature change zone according to the regional temperature mean, wherein the temperature mean is positively correlated with the fan operating power.

[0087] Among them, the analysis of fan operating power is realized in the form of regional temperature average. The larger the regional temperature average, the higher the overall temperature of the corresponding temperature change area, which means that the more heat dissipation is needed. By increasing the fan power, heat circulation is more convenient and the heat dissipation effect is achieved.

[0088] The fan power is adaptively set in different temperature change areas, so that the overall heat is quickly transferred from the high temperature area to the low temperature area. During the pressure release process, the high temperature area is mainly the area corresponding to the heating wire, and the low temperature area is mainly in other areas of the annealing furnace. The temperature in the furnace remains consistent before the pressure is released, and a temperature difference will occur during the pressure release. At this time, due to the change in heat, the cable may be subjected to different degrees of heat exchange at different positions in the furnace, which may lead to inconsistency in the microstructure and physical properties of the cable, affecting the quality of the final cable product. Through balanced temperature transfer, the overall temperature is maintained in a balanced change, thereby improving the distribution balance of the temperature in the furnace and enhancing production stability.

[0089] The fan operating power in the corresponding temperature change area is determined according to the temperature mean, including: normalizing the regional temperature mean to the maximum and minimum values ​​as the temperature power influence coefficient; and calculating the product of the temperature power influence coefficient and the fan rated power as the fan operating power.

[0090] In the embodiment of the present invention, the regional temperature mean is dimensionless through maximum and minimum value normalization processing, so as to facilitate the subsequent calculation of the product of the temperature power influence coefficient and the fan rated power as the fan operating power.

[0091] The fan rated power is the rated power of the fan operation, and optionally, it can be specifically 60 watts, which is analyzed according to the specific model of the selected fan and is not limited to this.

[0092] It should be noted that the above-mentioned fan operation achieves a balanced temperature distribution by accelerating the flow of heat. A self-starting fan may also be configured, which faces the heating chamber and is used to adjust the temperature distribution of the entire annealing furnace according to the temperature differences of all temperature change areas.

[0093] That is, when the variance of the regional temperature mean in all temperature change regions is greater than the preset variance threshold, the self-starting fan is started and stops when the variance of the regional temperature mean is less than or equal to the preset variance threshold.

[0094] Among them, the larger the variance of the regional temperature mean of all temperature change areas, the more discrete the overall temperature distribution is, that is, the overall balance is still insufficient. At this time, more heat flow is needed to achieve thermal circulation. A self-starting fan is configured toward the heating chamber to achieve rapid flow of temperature from high temperature to low temperature.

[0095] The preset variance threshold is a variance threshold value of the regional temperature mean. Specifically, the preset variance threshold may be, for example, 0.5, and may also be adjusted according to actual detection requirements, without limitation.

[0096] The embodiment of the present invention aims to solve the problem of inconsistent temperature changes caused by changes in air pressure during the pressure release process of the annealing furnace. By configuring a temperature sensor and a fan, the temperature sensor is used to perform temperature detection. The temperature detection results are used to divide the community to obtain different temperature change areas. The operating power of the fan is controlled according to the overall effect of the temperature change area, thereby improving the heat balance in the furnace and avoiding the influence of temperature change differences on the consistent quality of the produced cables.

[0097] It should be noted that the sequence of the above embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. The processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0098] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

Claims

1. A cable continuous production device, comprising an annealing furnace, wherein the annealing furnace comprises a furnace body and a heating chamber, characterized in that: Temperature control groups consisting of temperature sensors and fans are respectively configured at different sampling positions in the cavity of the furnace body and the heating chamber, and all the temperature control groups are connected to a temperature control module. The temperature control module obtains the temperature data of each temperature sensor at the sampling position in real time, and adjusts the operating power of the fan based on the temperature data at different sampling positions, so as to achieve temperature balance control at the sampling position when the pressure is released; The method for adjusting the operating power of the fan based on the temperature data at different sampling positions includes: Obtain the temperature data of each temperature sensor at different times during the pressure release period as a temperature sequence; take the temperature data with the largest value at the current moment as the central temperature value; Determine the degree of temperature anomaly at each sampling position at the current moment according to the numerical difference between the temperature data of different sampling positions at the current moment and the central temperature value; According to the changes in the temperature series of different temperature sensors, the consistency of the temperature changes at any two sampling locations is determined; Combining the degree of consistency of the temperature changes and the degree of temperature anomaly at any two sampling locations, the community monitoring division of the temperature changes at different sampling locations is realized, and different temperature change areas are determined; Based on the temperature data of different temperature change areas at the current moment, the fan operating power in the corresponding temperature change area is adjusted; It also includes a pressure relief hole, the heating chamber includes a heating wire, and the sampling positions of the temperature control group include at least: the pressure relief hole sampling position, different sampling positions of the heating wire, the top and bottom sampling positions of the furnace body, and the inner wall of the cavity.

2. A cable continuous production device as claimed in claim 1, characterized in that: Determining the temperature anomaly degree of each sampling position at the current moment according to the numerical difference between the temperature data of different sampling positions at the current moment and the central temperature value includes: At the current moment, the absolute value of the difference between the temperature data at any sampling position and the central temperature value is calculated, negatively correlated and normalized as the temperature anomaly degree.

3. A cable continuous production device as claimed in claim 1, characterized in that: Determining the consistency of temperature changes at any two sampling locations according to changes in temperature sequences of different temperature sensors includes: Determine the product of the mean and variance of all temperature data in the temperature sequence of each temperature sensor as a characteristic indicator of temperature change; Use the DTW algorithm to calculate the temperature series of any two temperature sensors and determine the DTW values ​​corresponding to the two temperature series; The degree of consistency of temperature change is determined based on the difference in temperature change characteristic indicators and DTW values ​​of any two temperature sequences.

4. A cable continuous production device as claimed in claim 3, characterized in that: Determining the consistency of temperature change according to the temperature change characteristic index difference and DTW value of any two temperature sequences includes: The absolute value of the difference between the temperature change characteristic indexes of any two temperature series is taken as the temperature change difference characteristic value; The product of the temperature change difference characteristic value and the DTW value is calculated, and the opposite of the product value is normalized to the maximum and minimum values ​​to obtain the degree of consistency of the temperature change.

5. A cable continuous production device as claimed in claim 1, characterized in that: Combined with the degree of consistency of temperature change and the degree of temperature anomaly, the community monitoring division of temperature change at different sampling locations is realized, and different temperature change areas are determined, including: The difference in the degree of temperature anomaly at two sampling locations is calculated, and the opposite number of the difference is normalized to the maximum and minimum values ​​to determine the anomaly similarity index; Determine the temperature change similarity between any two sampling locations at the current moment according to the temperature change consistency degree and the abnormal similarity index; Based on the SLPA algorithm, all sampling locations are divided into different sampling location communities according to the similarity of the temperature changes between any two sampling locations; The device area consisting of all sampling positions belonging to the same sampling position community is regarded as the same temperature change area.

6. A cable continuous production device as claimed in claim 1, characterized in that: Based on the temperature data of different temperature change areas at the current moment, the fan operating power in the corresponding temperature change area is adjusted, including: Calculate the regional temperature mean of the temperature data at all locations within the same temperature variation region; The fan operating power in the corresponding temperature change area is determined according to the regional temperature average, wherein the temperature average is positively correlated with the fan operating power.

7. A cable continuous production device as claimed in claim 6, characterized in that: Determining the fan operating power in the corresponding temperature change area according to the temperature average value includes: The average temperature of the region is normalized to the maximum and minimum values ​​as the temperature power influence coefficient; The product of the temperature power influence coefficient and the rated power of the fan is calculated as the fan operating power.

8. A cable continuous production device as claimed in claim 6, characterized in that: It also includes a self-starting fan, which is directed toward the heating chamber and is used to adjust the temperature distribution of the entire annealing furnace according to the temperature differences of all temperature change areas.

9. A cable continuous production device as claimed in claim 8, characterized in that: The step of adjusting the temperature distribution of the entire annealing furnace according to the temperature differences of all temperature change areas includes: When the variance of the regional temperature means of all temperature change regions is greater than a preset variance threshold, the self-starting fan is started and stopped when the variance of the regional temperature means is less than or equal to the preset variance threshold.

Images