A control method, system and terminal for efficient extraction of acetylene based on cryogenic separation

Abstract

The present invention relates to a method, system and terminal for efficient extraction and control of acetylene based on cryogenic separation, belonging to the technical field of acetylene, and includes: obtaining the gas flow rate in the pipeline; when the gas flow rate is inconsistent with the preset reference flow rate, obtaining the detected thermal image at the preset detection position; determining the estimated condensation range of ice according to the detected thermal image and the preset reference detection color; obtaining the condensation flow rate according to the estimated condensation range; when the condensation flow rate is inconsistent with the preset reference flow rate, obtaining the scanning information according to the estimated condensation range; determining the marked condensation range according to the scanning information; determining the friction parameter according to the marked condensation range, and controlling the preset friction device to friction the outer wall of the pipeline with the friction parameter. This application has the effect of improving the efficiency of acetylene extraction.

Description

Technical Field

[0001] The present invention relates to the technical field of acetylene, and particularly to a method, a system and a terminal for efficiently extracting acetylene based on low-temperature separation. Background Art

[0002] Acetylene is an alkyne compound and is widely used in fields such as machining, chemistry, and scientific research.

[0003] The extraction of acetylene is a chemical separation process. When acetylene needs to be extracted from a mixed gas, first, impurities and moisture in the mixed gas need to be removed, and then the mixed gas is transported through a pipeline to a condenser. The temperature in the condenser is at the boiling point of acetylene, and the acetylene in the condenser solidifies to separate the mixed gas, so that acetylene can be successfully extracted.

[0004] When removing impurities and moisture from the mixed gas, if the moisture removal is not perfect, when the mixed gas is transported through the pipeline to the condenser, ice is likely to condense in the pipeline, resulting in pipeline blockage and reducing the efficiency of acetylene extraction. Summary of the Invention

[0005] In order to improve the efficiency of acetylene extraction, the present invention provides a method, a system and a terminal for efficiently extracting acetylene based on low-temperature separation.

[0006] In the first aspect, the present invention provides a method for efficiently extracting acetylene based on low-temperature separation, adopting the following technical solution:

[0007] A method for efficiently extracting acetylene based on low-temperature separation includes:

[0008] Obtain the gas flow rate in the pipeline;

[0009] When the gas flow rate is inconsistent with a preset reference flow rate, obtain the detected thermal image at a preset detection position;

[0010] Determine the estimated range of ice condensation according to the detected thermal image and a preset reference detection color;

[0011] Obtain the condensation flow rate according to the estimated condensation range;

[0012] When the condensation flow rate is inconsistent with a preset reference flow rate, obtain the scanning information according to the estimated condensation range;

[0013] Determine the marked condensation range according to the scanning information;

[0014] Determine the friction parameter according to the marked condensation range, and control a preset friction device to friction the outer wall of the pipeline with the friction parameter.

[0015] By adopting the above technical solution, the marked condensation range is obtained by analyzing the gas flow rate, the detected thermal image, and the condensation flow rate, and the friction parameter is obtained by analyzing the marked condensation range to control the friction device to rub the outer wall of the pipeline. Thus, heat can be generated on the pipeline by the friction device to melt the ice, reducing the probability of pipeline blockage and improving the efficiency of acetylene extraction.

[0016] Optionally, the method for determining the friction parameter includes:

[0017] Obtain the ambient temperature around the pipeline;

[0018] Determine the correction coefficient according to the ambient temperature and the detected thermal image;

[0019] Determine the average ice thickness according to the condensation flow rate, the gas flow rate, and the preset pipeline specifications;

[0020] Determine the heat of ice melting according to the marked condensation range, the average ice thickness, the preset ice parameters, and the correction coefficient;

[0021] Determine the heat generated by friction per unit time according to the heat of ice melting and the preset reference time;

[0022] Determine the friction path according to the marked condensation range;

[0023] Determine the friction parameter according to the heat generated by friction and the friction path.

[0024] By adopting the above technical solution, the heat generated by friction per unit time and the friction path are obtained by analyzing the ambient temperature, the detected thermal image, the condensation flow rate, and the marked condensation range, and then the friction parameter is obtained by the heat generated by friction and the friction path, thereby improving the accuracy of the friction parameter.

[0025] Optionally, the method for determining the friction path includes:

[0026] Determine the condensation center point according to the marked condensation range;

[0027] Determine the axial coverage range and the circumferential coverage range according to the preset friction device specifications and the condensation center point;

[0028] Determine the axial inclusion range according to the axial coverage range and the marked condensation range;

[0029] Determine the circumferential inclusion range according to the circumferential coverage range and the marked condensation range;

[0030] Determine the friction path according to the axial inclusion range and the circumferential inclusion range.

[0031] By adopting the above technical solution, the axial inclusion range and the circumferential inclusion range are obtained by analyzing the friction device specifications, the condensation center point, and the marked condensation range, and the friction path is obtained from the axial inclusion range and the circumferential inclusion range, thereby improving the accuracy of the friction path.

[0032] Optionally, the method after determining the heat generated by friction includes:

[0033] Determine the condensation extension width according to the friction path and the marked condensation range;

[0034] Select the condensation extension width exceeding the preset reference coverage distance from the condensation extension width as the marked extension width, and take the marked extension width with the largest value as the target extension width;

[0035] Determine the supplementary friction range according to the marked extension width, the friction path, and the marked condensation range, and control the extension device preset on the friction device to extend with the target extension width;

[0036] Determine the detection temperature difference according to the ambient temperature, the heat generated by friction, and the preset extension specification;

[0037] Update the heat generated by friction according to the supplementary friction range and the detection temperature difference.

[0038] By adopting the above technical solution, the target extension width is obtained based on the excess situation between the condensation extension width and the reference coverage distance, and the supplementary friction range is obtained by analyzing the target extension width, the friction path, and the marked condensation range. Then, the detection temperature difference is obtained by analyzing the ambient temperature, the heat generated by friction, and the heat conduction fin specification. The new heat generated by friction is obtained from the supplementary friction range and the detection temperature difference, so that the friction device can generate heat for the marked condensation range to increase the ice melting speed.

[0039] Optionally, the method after determining the friction parameters includes:

[0040] Retrieve the friction normal pressure according to the friction parameters;

[0041] Retrieve the reference pipeline pressure according to the pipeline specification;

[0042] When the friction normal pressure exceeds the reference pipeline pressure, determine the reference friction speed per unit time according to the reference pipeline pressure, the preset friction coefficient, and the heat generated by friction;

[0043] Determine the number of friction times according to the reference friction speed and the friction path;

[0044] When the number of friction times is not an integer, update the number of friction times;

[0045] Determine the marked friction speed and the marked normal pressure according to the updated number of frictions, and update the friction parameters according to the marked friction speed, the marked normal pressure, the updated number of frictions, and the friction path.

[0046] By adopting the above technical solution, obtain the number of frictions based on the excess situation of the friction normal pressure and the reference pipeline pressure. When the number of frictions is not an integer, update the number of frictions and obtain the marked friction speed and the marked normal pressure, and update the friction parameters through the marked friction speed, the marked normal pressure, the updated number of frictions, and the friction path, so as to be able to control the operation of the friction device without damaging the pipeline structure.

[0047] Optionally, it further includes:

[0048] Determine the vibration frequency according to the updated friction parameters and the pipeline specifications;

[0049] Determine the ice melting mass according to the average ice thickness, the ice parameters, and the marked condensation range;

[0050] Determine the vibration force according to the vibration frequency, the ice melting mass, and the condensation center point;

[0051] Determine the melting mass per unit time according to the heat generated by friction and the ice parameters;

[0052] Determine the water film formation thickness according to the melting mass and the marked condensation range;

[0053] Determine the water film adhesion force according to the water film formation thickness;

[0054] Determine the estimated dropping time according to the vibration force and the water film adhesion force, and obtain the operation time of the friction device;

[0055] Based on the situation that the operation time is consistent with the estimated dropping time, update the detected thermal image to recover the ice.

[0056] By adopting the above technical solution, analyze the updated friction parameters, pipeline specifications, average ice thickness, ice parameters, and marked condensation range to obtain the vibration force, and then analyze the heat generated by friction, ice parameters, and marked condensation range to obtain the water film adhesion force, and obtain the estimated dropping time through the water film adhesion force and the vibration force. When the operation time is consistent with the estimated dropping time, update the detected thermal image to recover the ice, so as to be able to know the dropping time of the ice and recover it, reducing the influence of the ice on the acetylene extraction process.

[0057] Optionally, the method after determining the estimated dropping time includes:

[0058] Determine the vibration interval distance according to the pipeline specifications;

[0059] Determine the vibration transmission change range according to the supplementary friction range and the vibration interval distance;

[0060] Determine the marked vibration force received by each vibration transmission change range according to the vibration force, the pipe specification, and the vibration interval distance;

[0061] Determine the marked adhesion force according to the vibration transmission change range and the water film adhesion force;

[0062] Determine the marked dropping time according to the marked vibration force and the marked adhesion force;

[0063] Update the estimated dropping time according to the marked dropping time.

[0064] By adopting the above technical solution, analyze the pipe specification, the marked extension width, and the marked condensation range to obtain the vibration transmission change range and the marked vibration force, analyze the vibration transmission change range and the water film adhesion force to obtain the marked adhesion force, and then update the estimated dropping time through the marked vibration force and the water film adhesion force, so as to know the dropping time required for the range of ice that is not directly vibrated by the friction device, and improve the accuracy of the estimated dropping time.

[0065] Optionally, the calculation method of the reference friction speed:

[0066] V = Q / μN, where V is the reference friction speed, Q is the heat generated by friction, μ is the friction coefficient, and N is the reference pipe pressure.

[0067] By adopting the above technical solution, calculate the reference friction speed through the above formula, thereby improving the accuracy of the reference friction speed.

[0068] In a second aspect, the present application provides an efficient acetylene extraction control system based on cryogenic separation, adopting the following technical solution:

[0069] An efficient acetylene extraction control system based on cryogenic separation, comprising:

[0070] An acquisition module, configured to acquire gas flow rate, detect thermal images, condensation flow rate, scanning information, ambient temperature, and running time;

[0071] A memory, configured to store an efficient acetylene extraction control method based on cryogenic separation;

[0072] A processor, configured to load and execute the program stored in the memory.

[0073] In a third aspect, the present application provides a terminal, adopting the following technical solution:

[0074] A terminal includes a memory and a processor, and a control method for efficient extraction of acetylene based on cryogenic separation that can be loaded and executed by the processor is stored on the memory.

[0075] In summary, the present application includes at least one of the following beneficial technical effects:

[0076] 1. By analyzing the gas flow rate, detecting the thermal image, and the condensation flow rate to obtain the marked condensation range, and analyzing the marked condensation range to obtain the friction parameter to control the friction device to friction the outer wall of the pipeline, so that heat can be generated on the pipeline by the friction device to melt the ice, reducing the probability of pipeline blockage and improving the efficiency of acetylene extraction;

[0077] 2. By analyzing the ambient temperature, detecting the thermal image, the condensation flow rate, and the marked condensation range to obtain the heat generated by friction per unit time and the friction path per unit time, and then obtaining the friction parameter from the heat generated by friction and the friction path, so as to improve the accuracy of the friction parameter;

[0078] 3. By the water film adhesion force and the vibration force to obtain the estimated dropping time, when the running time is consistent with the estimated dropping time, updating the detected thermal image to recover the ice cubes, so that the time when the ice cubes drop can be known and recovered, reducing the influence of the ice cubes on the acetylene extraction process. Description of the Drawings

[0079] Figure 1 is a flowchart of a control method for efficient extraction of acetylene based on cryogenic separation according to an embodiment of the present invention;

[0080] Figure 2 is a flowchart of a method for determining the friction parameter according to an embodiment of the present invention;

[0081] Figure 3 is a flowchart of a method for determining the friction path according to an embodiment of the present invention;

[0082] Figure 4 is a flowchart of the method after determining the heat generated by friction according to an embodiment of the present invention;

[0083] Figure 5 is the flowchart of the method after determining the friction parameter according to an embodiment of the present invention Figure 1 ;

[0084] Figure 6 is the flowchart of the method after determining the friction parameter according to an embodiment of the present invention Figure 2 ;

[0085] Figure 7 is a flowchart of the method after determining the estimated dropping time according to an embodiment of the present invention. Detailed Embodiments

[0086] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0087] A method for efficiently extracting acetylene based on cryogenic separation controls the friction device to rub the outer wall of the pipeline to melt the ice inside the pipeline, and further adjusts the friction device according to the condensation range of the ice and the vibration condition of the friction device, so that the friction device can generate heat to melt the ice in the pipeline, reduce the probability of pipeline blockage, and improve the efficiency of acetylene extraction.

[0088] Refer to Figure 1 , this embodiment of the present application discloses a method for efficiently extracting acetylene based on cryogenic separation, including the following steps:

[0089] Step S100: Obtain the gas flow rate inside the pipeline.

[0090] The gas flow rate refers to the flow rate of the gas transported through the pipeline. This gas is a mixed gas containing acetylene and can be detected by a preset flow sensor.

[0091] Step S101: When the gas flow rate is inconsistent with the preset reference flow rate, obtain the detected thermal image of the preset detection position.

[0092] The reference flow rate is the flow rate of the gas transported when the pipeline does not freeze or leak, set by the technician. The detection position is the position set by the technician for detecting whether the pipeline freezes, and the detection position is the condenser inlet. The detected thermal image refers to the thermal image of the detection position. When the gas flow rate is inconsistent with the reference flow rate, it indicates that there are abnormalities such as freezing or leakage in the pipeline, and then the preset thermal imager scans the detection position to form the detected thermal image.

[0093] Step S102: Determine the estimated condensation range of the ice according to the detected thermal image and the preset reference detection color.

[0094] The reference detection color is the color of the ice in the detected thermal image set by the technician. The estimated condensation range refers to the estimated range where ice appears at the detection position, and the range of the reference detection color is framed from the detected thermal image as the estimated condensation range.

[0095] Step S103: Obtain the condensation flow rate according to the estimated condensation range.

[0096] The condensation flow rate refers to the flow rate of the gas within the estimated condensation range, and the flow rate within the estimated condensation range is detected by a preset ultrasonic sensor as the condensation flow rate.

[0097] Step S104: When the condensation flow rate is inconsistent with the preset reference flow rate, obtain the scanning information according to the estimated condensation range.

[0098] The reference flow rate is the flow rate of the gas when there is no ice formation at the detection position set by the technician. The scanning information refers to the information for scanning the condensation prediction range. When the condensation flow rate is inconsistent with the preset reference flow rate, it indicates that ice formation has occurred on the inner wall of the pipeline at the detection position. Then, the information obtained by scanning the condensation prediction range with a preset infrared sensor is used as the scanning information. This scanning information includes the parameter information of the light refraction that occurs when the infrared ray scans the pipeline.

[0099] Step S105: Determine the marked condensation range according to the scanning information.

[0100] The reference refraction information is the refraction information when the infrared sensor scanned by the technician scans the pipeline. The marked condensation range number refers to the range where ice formation occurs inside the pipeline. By connecting and combining the positions of each parameter information that is different from the reference refraction information in the scanning information, the marked condensation range is formed.

[0101] Step S106: Determine the friction parameter according to the marked condensation range, and control the preset friction device to friction the outer wall of the pipeline with the friction parameter.

[0102] The friction device is a device that frictions the outer wall of the pipeline. The friction device includes an annular guide rail, a pushing device, and a friction head arranged at one end of the pushing device close to the pipeline. The annular guide rail is for the pushing device and the friction head to move circumferentially along the outer wall of the pipeline. The pushing device is a device used to drive the friction head to apply a normal pressure to the pipeline. The pushing device can be a telescopic rod and an air pump. Guide rails for the annular guide rail to axially slide along the pipeline are arranged on both sides of the pipeline.

[0103] The friction parameter is a parameter used to control the operation of the friction device. The friction parameter includes a friction path, a friction speed, a friction normal pressure, and a friction number. The friction speed refers to the distance that the friction device moves per unit time. The friction path refers to the path for controlling the friction device to perform friction. The friction normal pressure refers to the normal pressure generated by the friction device on the pipeline when operating with the friction parameter. The numerical value of the friction speed in this friction parameter is the same as the distance value of the friction path, and the friction number is 1 time.

[0104] Analyze the marked condensation range to obtain the friction parameter, and control the friction device to friction the outer wall of the pipeline with the friction parameter.

[0105] Refer to Figure 2 , the method for determining the friction parameter includes:

[0106] Step S200: Obtain the ambient temperature around the pipeline.

[0107] The ambient temperature around the pipeline refers to the temperature of the environment around the pipeline. The temperature of the environment around the pipeline detected by a preset temperature sensor is used as the ambient temperature around the pipeline.

[0108] Step S201: Determine a correction factor based on the ambient temperature and the detected thermal image.

[0109] The correction factor refers to the factor used to correct the heat actually transferred from the friction device to the ice. By detecting the thermal image to obtain the side temperatures on both sides of the marked condensation range, the side temperatures and the ambient temperature are input into a preset heat database to match the correction factor.

[0110] The heat database contains the corresponding relationships among the side temperature, the ambient temperature, and the correction factor. The heat database is set by humans and will not be elaborated here.

[0111] Step S202: Determine the average ice thickness based on the condensation flow rate, the gas flow rate, and the preset pipeline specifications.

[0112] The pipeline specifications are parameter specifications such as the size, material strength, friction coefficient, maximum normal pressure that can be borne, and the minimum distance of force change during vibration transmission of the pipeline at the detection position set by the technician. The average ice thickness refers to the average thickness of the ice within the marked condensation range. By retrieving the reference cross-sectional area from the pipeline specifications, calculating the quotient of the condensation flow rate and the gas flow rate at each position to obtain different cross-sectional areas, calculating the sum of the cross-sectional areas different from the reference cross-sectional area to obtain the ice volume, and calculating the quotient of the ice volume and the area of the marked condensation range as the average ice thickness.

[0113] Step S203: Determine the heat of ice melting based on the marked condensation range, the average ice thickness, the preset ice parameters, and the correction factor.

[0114] The ice parameters are parameters such as the density and latent heat value of the ice set by the technician. The heat of ice melting refers to the total heat transferred from the friction device to the ice to melt the ice. By using the marked condensation range, the average ice thickness, the latent heat value of the ice, and the density of the ice to calculate the heat required to melt the ice, and then calculating the product of the required heat and the correction factor as the heat of ice melting. The calculation method of the heat required to melt the ice is common knowledge for those skilled in the art and will not be elaborated here.

[0115] Step S204: Determine the heat generated by friction per unit time based on the heat of ice melting and the preset reference time.

[0116] The reference time is the maximum time required to melt the ice set by the technician. The heat generated by friction refers to the heat transferred from the friction device to the ice per unit time. By calculating the quotient of the heat of ice melting and the reference time as the heat generated by friction.

[0117] Step S205: Determine the friction path based on the marked condensation range.

[0118] The friction path is to move along the axial direction of the pipeline or along the circumferential direction of the pipeline. The friction path is obtained by analyzing the marked condensation range.

[0119] Step S206: Determine the friction parameters according to the heat generated by friction and the friction path.

[0120] The frictional normal pressure is calculated by the heat generated by friction and the distance value within the friction path. The speed corresponding to the distance value of moving within the friction path per unit time is used as the friction speed. Then, the friction path, the normal pressure, and the friction speed are used as the friction parameters. The calculation method of the normal pressure is common knowledge to those skilled in the art and will not be elaborated here.

[0121] Refer to Figure 3 , the method for determining the friction path includes:

[0122] Step S300: Determine the condensation center point according to the marked condensation range.

[0123] The condensation center point refers to the center point of the marked condensation range. The condensation center point is obtained by analyzing the marked condensation range. The analysis method of the condensation center point is common knowledge to those skilled in the art and will not be elaborated here.

[0124] Step S301: Determine the axial coverage range and the circumferential coverage range according to the preset friction device specifications and the condensation center point.

[0125] The friction device specifications are the dimensional specifications of the friction device set by technicians. The axial coverage range refers to the range that the friction device can cover when moving along the axial direction of the pipeline, and the circumferential coverage range refers to the range that the friction device can cover when moving along the circumferential direction of the pipeline. By retrieving the axial and circumferential widths of the friction device from the friction device specifications, the range covered by moving the axial width with the condensation center point on the pipeline is used as the axial coverage range, and the range covered by moving the circumferential width with the condensation center point on the pipeline is used as the circumferential coverage range.

[0126] Step S302: Determine the axial inclusion range according to the axial coverage range and the marked condensation range.

[0127] The axial inclusion range refers to the intersecting range between the axial coverage range and the marked condensation range. The range intersecting with the marked condensation range is selected from the axial coverage range as the axial inclusion range.

[0128] Step S303: Determine the circumferential inclusion range according to the circumferential coverage range and the marked condensation range.

[0129] The circumferential inclusion range refers to the intersecting range between the circumferential coverage range and the marked condensation range. The range intersecting with the marked condensation range is selected from the circumferential coverage range as the circumferential inclusion range.

[0130] Step S304: Determine the friction path according to the axial inclusion range and the circumferential inclusion range.

[0131] By comparing the areas corresponding to the axial inclusion range and the circumferential inclusion range, when the area of the axial inclusion range is greater than the area of the circumferential inclusion range, the path that moves axially within the axial inclusion range with the condensation center point as the center is used as the friction path.

[0132] When the area of the circumferential inclusion range is greater than the area of the axial inclusion range, the path that moves circumferentially within the circumferential inclusion range with the condensation center point as the center is used as the friction path.

[0133] Refer to Figure 4 , the methods after determining the heat generated by friction include:

[0134] Step S400: Determine the condensation extension width according to the friction path and the marked condensation range.

[0135] The condensation extension width refers to the width that extends from the friction path to both sides within the marked condensation range. Taking the friction path as the center line, the vertical distance between the position points on the contours on both sides of the center line of the marked condensation range and the center line is used as the condensation extension width.

[0136] Step S401: Select the condensation extension widths that exceed the preset reference coverage distance from the condensation extension widths as the marked extension widths, and take the marked extension width with the largest value as the target extension width.

[0137] The reference coverage distance is the half-width distance parallel to the condensation extension width set by the technician on the friction device. The marked extension width refers to the condensation extension width that exceeds the reference coverage distance, and the condensation extension widths that exceed the reference coverage distance are selected from the condensation extension widths as the marked extension widths.

[0138] The target extension width refers to the largest marked extension width, and the marked extension width with the largest value is selected from the marked extension widths as the target extension width.

[0139] Step S402: Determine the supplementary friction range according to the marked extension width, the friction path, and the marked condensation range, and control the extension device preset on the friction device to extend with the target extension width.

[0140] The supplementary friction range refers to the marked condensation range that is not covered when the friction device runs along the friction path. By selecting the range that is not covered by the friction device from the marked condensation range, and taking the range of the target extension width as the supplementary friction range. The extension device refers to the heat conduction fin arranged on the friction device and used to guide the heat on the friction device to the supplementary friction range, and the heat conduction fin is in mutual contact with the pipeline.

[0141] Step S403: Determine the detected temperature difference based on the ambient temperature, the heat generated by friction, and a preset extension specification.

[0142] The extension specification refers to the dimensions of the extension device set by technicians, such as the thermal conductivity coefficient, etc. The detected temperature difference is the temperature difference between the heat generated during guiding friction by the heat guide plate and the environment. By inputting the ambient temperature, the heat generated by friction, and the thermal conductivity coefficient of the extension device into a preset thermal conductivity database, the detected temperature difference is matched. The thermal conductivity database contains the corresponding relationships between the ambient temperature, the heat generated by friction, the thermal conductivity coefficient of the extension device, and the detected temperature difference. The thermal conductivity database is set manually and will not be elaborated here.

[0143] Step S404: Update the heat generated by friction according to the supplementary friction range and the detected temperature difference.

[0144] By inputting the supplementary friction range and the detected temperature difference into a preset correction database to match the coefficient, calculate the product of the coefficient and the heat generated by friction as the new heat generated by friction. The correction database contains the corresponding relationships between the supplementary friction range, the detected temperature difference, and the coefficient. The correction database is set manually and will not be elaborated here.

[0145] Refer to Figure 5 , the method after determining the friction parameters includes:

[0146] Step S500: Retrieve the frictional normal pressure according to the friction parameters.

[0147] Retrieve the frictional normal pressure from the friction parameters.

[0148] Step S501: Retrieve the reference pipeline pressure according to the pipeline specification.

[0149] The reference pipeline pressure refers to the maximum normal pressure that the pipeline can withstand. Retrieve the reference pipeline pressure from the pipeline specification.

[0150] Step S502: When the frictional normal pressure exceeds the reference pipeline pressure, determine the reference friction speed per unit time based on the reference pipeline pressure, a preset friction coefficient, and the heat generated by friction.

[0151] The friction coefficient is the coefficient of friction between the friction device and the pipeline set by technicians. When the frictional normal pressure exceeds the reference pipeline pressure, it indicates that the friction device will cause deformation to the pipeline when operating with the friction parameters. Then, calculate the reference friction speed through the reference pipeline pressure, the friction coefficient, and the heat generated by friction. The calculation method of the reference friction speed: V = Q / μN, where V is the reference friction speed, Q is the heat generated by friction, μ is the friction coefficient, and N is the reference pipeline pressure.

[0152] Step S503: Determine the number of frictions according to the reference friction speed and the friction path.

[0153] The number of frictions refers to the number of times the friction device moves back and forth on the friction path when running at the reference friction speed. The number of frictions is calculated by dividing the distance of the friction path by the reference friction speed. In this embodiment, the reference friction speed is the distance moved per unit time.

[0154] Step S504: Update the number of frictions when the number of frictions is not an integer.

[0155] When the number of frictions is not an integer, it means that there is a part of the marking condensation range that has not been friction-covered after the reference time. Therefore, the decimal part of the number of frictions is removed, and the number of frictions after removing the decimal part is incremented by one to form a new number of frictions.

[0156] Step S505: Determine the marking friction speed and the marking normal pressure according to the updated number of frictions, and update the friction parameters according to the marking friction speed, the marking normal pressure, the updated number of frictions, and the friction path.

[0157] The marking friction speed refers to the speed of the friction device per unit time when running at the updated number of frictions. The marking friction speed is calculated by multiplying the friction path by the updated number of frictions. The marking normal pressure refers to the normal pressure exerted by the friction device on the pipeline when running at the updated number of frictions and the marking friction speed. The marking normal pressure is calculated by referring to the calculation method of the reference friction speed in step S502 based on the marking friction speed, the friction coefficient, and the heat generated by friction, and the marking friction speed, the marking normal pressure, the updated number of frictions, and the friction path are used as the new friction parameters.

[0158] Refer to Figure 6 , the method after determining the friction parameters further includes:

[0159] Step S600: Determine the vibration frequency according to the updated friction parameters and the pipeline specifications.

[0160] The vibration frequency refers to the frequency of vibration generated by the pipeline when the friction device runs at the updated friction parameters. The vibration frequency is matched by inputting the updated friction parameters and the pipeline specifications into a preset vibration database. The vibration database contains the corresponding relationship between the friction parameters, the pipeline specifications, and the vibration frequency. The vibration database is set by humans and will not be elaborated here.

[0161] Step S601: Determine the ice melting mass according to the average ice thickness, the ice parameters, and the marking condensation range.

[0162] The mass of ice melting refers to the mass of the ice that needs to be melted. The mass of ice melting is calculated by the average thickness of the ice, the density of the ice in the ice parameters, and the marked condensation range. The calculation method of the mass of ice melting is common knowledge to those skilled in the art and will not be elaborated here.

[0163] Step S602: Determine the vibration force according to the vibration frequency, the mass of ice melting, and the condensation center point.

[0164] The vibration force refers to the force acting on the ice when the friction device drives the pipeline to vibrate. The initial vibration force is matched by inputting the vibration frequency and the mass of ice melting into the vibration database. Then, the angle of ice adhesion is known through the condensation center point and the center point of the pipeline. The vertical component force of the ice is calculated by the angle and the mass of ice melting. When the condensation center point is below the center point of the pipeline, the vertical component force is negative; when the condensation center point is above the center point of the pipeline, the vertical component force is positive. The sum of the vertical component force and the initial vibration force is calculated as the vibration force.

[0165] The vibration database also contains the corresponding relationship between the vibration frequency, the mass of ice melting, and the initial vibration force, which will not be elaborated here.

[0166] Step S603: Determine the melting mass per unit time according to the heat generated by friction and the ice parameters.

[0167] The melting mass refers to the mass of ice melted per unit time. The melting mass is calculated by the heat generated by friction and the latent heat value of the ice in the ice parameters. The calculation method of the melting mass is common knowledge to those skilled in the art and will not be elaborated here.

[0168] Step S604: Determine the water film formation thickness according to the melting mass and the marked condensation range.

[0169] The water film formation thickness refers to the thickness of the water film formed by the marked condensation range per unit time. The water film formation thickness is calculated by the melting mass and the marked condensation range. The calculation method of the water film formation thickness is common knowledge to those skilled in the art and will not be elaborated here.

[0170] Step S605: Determine the water film adhesion force according to the water film formation thickness.

[0171] The water film adhesion force refers to the adhesion force of the water with the water film formation thickness. The water film adhesion force is matched by inputting the water film formation thickness into the preset adhesion database. The estimated falling time refers to the length value of the estimated falling time of the ice in the marked condensation range when the friction device is running.

[0172] The adhesion database contains the corresponding relationship between the vibration force, the water film formation thickness, the water film adhesion force, and the estimated falling time. The adhesion database is set artificially and will not be elaborated here.

[0173] Step S606: Determine the estimated dropping time based on the vibration force and the water film adhesion force, and obtain the operating time of the friction device.

[0174] Input the vibration force and the water film adhesion force into the adhesion database to match the estimated dropping time. The operating time refers to the length value of the operating time of the friction device. When the friction device operates, start timing, and use the timing result as the operating time.

[0175] Step S607: When the operating time is consistent with the estimated dropping time, update the detected thermal image to recover the ice cubes.

[0176] The recovery area refers to the area used to recover the ice that has dropped into the condenser. When the operating time is consistent with the estimated dropping time, it indicates that the ice cubes have dropped. Then, control the thermal imager to scan the detection position and the condenser to form a new detected thermal image, identify the position of the reference detection color from the detected thermal image, and control the preset recovery device to recover the ice at the position of the reference detection color. The recovery device refers to a scraper installed in the condenser to move the ice to the recovery area.

[0177] Refer to Figure 7 , the method after determining the estimated dropping time includes:

[0178] Step S700: Determine the vibration interval distance according to the pipe specification.

[0179] The vibration interval distance refers to the minimum distance at which the vibration force changes during transmission, and it is retrieved from the pipe specification.

[0180] Step S701: Determine the vibration transmission change range according to the supplementary friction range and the vibration interval distance.

[0181] The vibration transmission change range refers to the range in the supplementary friction range where the vibration force transmission changes. By drawing parallel lines to the friction path at intervals of the vibration interval distance, the range of the supplementary friction range included in each line is used as the vibration transmission change range.

[0182] Step S702: Determine the marked vibration force received by each vibration transmission change range according to the vibration force, the pipe specification, and the vibration interval distance.

[0183] The marked vibration force refers to the vibration force received by the vibration transmission change range. Input the vibration force, the pipe specification, and the vibration interval distance into the preset vibration transmission database to match the marked vibration force. The vibration transmission database contains the corresponding relationship between the vibration force, the pipe specification, the vibration interval distance, and the marked vibration force. The vibration transmission database is set manually and will not be elaborated here.

[0184] Step S703: Determine the marking adhesion force based on the vibration transmission change range and the water film adhesion force.

[0185] The marking adhesion force refers to the water film adhesion force within the vibration transmission change range. Refer to Steps S604 and S605 to obtain the marking adhesion force through the vibration transmission change range.

[0186] Step S704: Determine the marking dropping time based on the marking vibration force and the marking adhesion force.

[0187] The marking dropping time refers to the time length value when the ice within the vibration transmission change range is estimated to drop. Refer to Step S606 to obtain the marking dropping time through the marking vibration force and the marking adhesion force.

[0188] Step S705: Update the estimated dropping time based on the marking dropping time.

[0189] Select the time length value with the largest numerical value as the new estimated dropping time through the marking dropping time and the estimated dropping time.

[0190] Based on the same inventive concept, an embodiment of the present invention provides an efficient acetylene extraction control system based on cryogenic separation, including:

[0191] An acquisition module, configured to acquire gas flow rate, detect thermal images, condensation flow rate, scanning information, ambient temperature, and operation time;

[0192] A memory, configured to store an efficient acetylene extraction control method based on cryogenic separation;

[0193] A processor, configured to load and execute the program stored in the memory.

[0194] Based on the same inventive concept, an embodiment of the present invention provides a terminal, including a memory and a processor, and a program capable of being loaded and executed by the processor is stored on the memory, which is an efficient acetylene extraction control method based on cryogenic separation.

[0195] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the above division of each functional module is used as an example. In actual applications, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working processes of the above-described system, device, and unit can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated here.

[0196] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A control method for efficient extraction of acetylene based on cryogenic separation, characterized in that Including: Obtain the gas flow rate inside the pipeline at the detection position, where the detection position is the condenser inlet; When the gas flow rate is inconsistent with the preset reference flow rate, obtain the detected thermal image at the preset detection position; Determine the estimated ice condensation range according to the detected thermal image and the preset reference detection color; Obtain the condensation flow rate according to the condensation estimated range, where the condensation flow rate refers to the flow rate of the gas within the condensation estimated range; When the condensation flow rate is inconsistent with the preset reference flow rate, obtain the scanning information according to the condensation estimated range; Determine the marked condensation range according to the scanning information; Determine the friction parameter according to the marked condensation range, and control the preset friction device to friction the outer wall of the pipeline with the friction parameter.

2. The control method for efficient extraction of acetylene based on cryogenic separation according to claim 1, wherein The method for determining the friction parameter includes: Obtain the ambient temperature around the pipeline; Determine the correction coefficient according to the ambient temperature and the detected thermal image, where the correction coefficient is the coefficient used to correct the heat actually transferred from the friction device to the ice; Determine the average ice thickness according to the condensation flow rate, the gas flow rate, and the preset pipeline specifications; Determine the heat of ice melting according to the marked condensation range, the average ice thickness, the preset ice parameters, and the correction coefficient; Determine the heat generated by friction per unit time according to the heat of ice melting and the preset reference time; Determine the friction path according to the marked condensation range; Determine the friction parameter according to the heat generated by friction and the friction path.

3. The control method for efficient extraction of acetylene based on cryogenic separation according to claim 2, characterized in that, The method for determining the friction path includes: Determine the condensation center point according to the marked condensation range; Determine the axial coverage range and the circumferential coverage range according to the preset friction device specifications and the condensation center point; Determine the axial inclusion range according to the axial coverage range and the marked condensation range; Determine the circumferential inclusion range according to the circumferential coverage range and the marked condensation range; Determine the friction path according to the axial inclusion range and the circumferential inclusion range.

4. A method for controlling the efficient extraction of acetylene based on cryogenic separation according to claim 2, characterized in that, The method after determining the heat generated by friction includes: Determine the condensation extension width according to the friction path and the marked condensation range; Select the condensation extension width that exceeds the preset reference coverage distance from the condensation extension width as the marked extension width, and take the marked extension width with the largest value as the target extension width; Determine the supplementary friction range according to the marked extension width, the friction path, and the marked condensation range, and control the extension device preset on the friction device to extend with the target extension width; Determine the detected temperature difference according to the ambient temperature, the heat generated by friction, and the preset extension specifications, where the detected temperature difference is the temperature difference generated between the extension device and the environment when guiding the heat generated by friction; Update the heat generated by friction according to the supplementary friction range and the detected temperature difference.

5. The control method for efficient extraction of acetylene based on cryogenic separation according to claim 2, characterized in that, The method after determining the friction parameter includes: Retrieve the friction normal pressure according to the friction parameter; Retrieve the reference pipeline pressure according to the pipeline specifications; When the friction normal pressure exceeds the reference pipeline pressure, determine the reference friction speed per unit time according to the reference pipeline pressure, the preset friction coefficient, and the heat generated by friction; Determine the number of friction times according to the reference friction speed and the friction path; When the number of friction times is not an integer, update the number of friction times; Determine the marked friction speed and marked normal pressure according to the updated number of friction times, and update the friction parameters according to the marked friction speed, marked normal pressure, updated number of friction times, and friction path.

6. The control method for efficient extraction of acetylene based on cryogenic separation according to claim 5, wherein It further includes: Determine the vibration frequency according to the updated friction parameters and pipe specifications; Determine the ice melting mass according to the average ice thickness, ice parameters, and marked condensation range; Determine the vibration force according to the vibration frequency, ice melting mass, and condensation center point; Determine the melting mass per unit time according to the heat generated by friction and ice parameters; Determine the water film generation thickness according to the melting mass and marked condensation range; Determine the water film adhesion force according to the water film generation thickness; Determine the estimated dropping time according to the vibration force and water film adhesion force, and obtain the operation time of the friction device; When the operation time is consistent with the estimated dropping time, update the detected thermal image to recover the ice.

7. A method for controlling the efficient extraction of acetylene based on cryogenic separation according to claim 6, characterized in that, The method after determining the estimated dropping time includes: Determine the vibration interval distance according to the pipe specifications; Determine the vibration transmission change range according to the supplementary friction range and vibration interval distance; Determine the marked vibration force received by each vibration transmission change range according to the vibration force, pipe specifications, and vibration interval distance; Determine the marked adhesion force according to the vibration transmission change range and water film adhesion force; Determine the marked dropping time according to the marked vibration force and marked adhesion force; Update the estimated dropping time according to the marked dropping time.

8. A method for controlling the efficient extraction of acetylene based on cryogenic separation according to claim 5, characterized in that, Calculation method of the reference friction speed: V = Q / μN, where V is the reference friction speed, Q is the heat generated by friction, μ is the friction coefficient, and N is the reference pipe pressure.

9. An efficient acetylene extraction control system based on cryogenic separation, characterized in that, It includes: An acquisition module for acquiring gas flow rate, detected thermal image, condensation flow rate, scanning information, ambient temperature, and operation time; The scanning information refers to the information for scanning the estimated condensation range, and the ambient temperature refers to the temperature of the environment around the pipe, and the operation time refers to the time length value of the operation of the friction device; A memory for storing a method for efficient extraction and control of acetylene based on cryogenic separation as described in any one of claims 1 to 8; A processor for loading and executing the program stored in the memory.

10. A terminal, characterized in that It includes a memory and a processor, and a method for efficient extraction and control of acetylene based on cryogenic separation as described in any one of claims 1 to 8 is stored on the memory and can be loaded and executed by the processor.

Images