Acetylene efficient extraction control method and system based on low-temperature separation and terminal

Abstract

The invention relates to an acetylene efficient extraction control method and system based on low-temperature separation and a terminal, and relates to the technical field of acetylene. When the gas flow is inconsistent with the preset reference flow, obtaining a detection thermal image of a preset detection position; determining a condensation estimation range of ice according to the detection thermal image and a preset reference detection color; obtaining a condensation flow rate according to the condensation pre-estimation range; when the condensation flow velocity is inconsistent with a preset reference flow velocity, obtaining scanning information according to a condensation estimation range; determining a mark condensation range according to the scanning information; determining friction parameters according to the marked condensation range, and controlling a preset friction device to rub the outer wall of the pipeline according to the friction parameters. The acetylene extraction device has the effect of improving the acetylene extraction efficiency.

Description

Technical Field

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

[0002] Acetylene is an alkyne compound that is widely used in mechanical processing, chemistry, and scientific research.

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

[0004] When the impurities and moisture are removed from the mixed gas, if the moisture removal is not perfect, when the mixed gas is transported to the condenser through the pipeline, ice will easily condense in the pipeline, causing 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, system and terminal for controlling acetylene efficient extraction based on low temperature separation.

[0006] In the first aspect, the present invention provides a method for efficiently extracting and controlling acetylene based on low temperature separation, which adopts the following technical scheme: A method for efficiently extracting and controlling acetylene based on low temperature separation, comprising: Get the gas flow in the pipeline; When the gas flow rate is inconsistent with the preset reference flow rate, a detection thermal image of a preset detection position is obtained; Determine the estimated range of ice condensation based on the detection of thermal images and preset reference detection colors; According to the estimated range of condensation, the condensation flow rate is obtained; When the condensation flow rate is inconsistent with the preset reference flow rate, scanning information is obtained according to the condensation estimated range; Determine the scope of the marked coagulation according to the scanning information; The friction parameters are determined according to the marked condensation range, and the preset friction device is controlled to rub the outer wall of the pipeline with the friction parameters.

[0007] By adopting the above technical scheme, the gas flow, the thermal image and the condensation flow rate are analyzed to obtain the marked condensation range, and the marked condensation range is analyzed to obtain the friction parameters to control the friction device to rub the outer wall of the pipeline, so that the friction device can generate heat for the pipeline to melt the ice, reduce the probability of pipeline blockage, and improve the efficiency of acetylene extraction.

[0008] Optionally, the method for determining the friction parameter includes: Get the ambient temperature of the pipeline; Determine the correction factor based on the ambient temperature and the detected thermal image; Determine the average ice thickness based on the condensation flow rate, gas flow rate and preset pipeline specifications; Determine the melting heat of ice according to the marked condensation range, average ice thickness, preset ice parameters and correction factor; The heat generated by friction per unit time is determined based on the melting heat of ice and the preset reference time; Determine the friction path by marking the condensation range; The friction parameters are determined based on the friction heat generated and the friction path.

[0009] By adopting the above technical solution, the ambient temperature, the detected thermal image, the condensation flow rate and the marked condensation range are analyzed to obtain the friction heat and friction path per unit time, and then the friction heat and friction path are used to obtain the friction parameters, thereby improving the accuracy of the friction parameters.

[0010] Optionally, the method for determining the friction path includes: Determine the coagulation center point according to the marked coagulation range; Determine the axial coverage and circumferential coverage according to the preset friction device specifications and coagulation center point; The axial inclusion range is determined based on the axial coverage range and the marked condensation range; Determine the circumferential inclusion range based on the circumferential coverage range and the marked condensation range; The friction path is determined based on the axial inclusion range and the circumferential inclusion range.

[0011] By adopting the above technical solution, the specifications of the friction device, the condensation center point and the marked condensation range are analyzed to obtain the axial inclusion range and the circumferential inclusion range, and the friction path is obtained through the axial inclusion range and the circumferential inclusion range, thereby improving the accuracy of the friction path.

[0012] Optionally, the method for determining the heat generated by friction includes: Determine the coagulation extension width based on the friction path and the marked coagulation range; Selecting a condensation extension width exceeding a preset reference coverage distance from the condensation extension widths as a mark extension width, and taking the mark extension width with the largest value as a target extension width; Determine the supplementary friction range according to the mark extension width, the friction path and the mark coagulation range, and control the extension device preset on the friction device to extend with the target extension width; Determine the detection temperature difference based on the ambient temperature, frictional heat and preset extension specifications; The friction generated heat is updated based on the supplementary friction range and the detected temperature difference.

[0013] By adopting the above technical scheme, the target extension width is obtained according to the excess between the condensation extension width and the reference coverage distance, and the target extension width, friction path and marked condensation range are analyzed to obtain the supplementary friction range, and then the ambient temperature, friction-generated heat and heat conductive plate specifications are analyzed to obtain the detected temperature difference. By supplementing the friction range and detecting the temperature difference to obtain the new friction-generated heat, the friction device can generate heat for the marked condensation range to increase the melting rate of ice.

[0014] Optionally, the method after determining the friction parameter includes: The friction normal pressure is retrieved according to the friction parameter; According to the pipeline specifications, the reference pipeline pressure can be retrieved; When the friction normal pressure exceeds the reference pipeline pressure, the reference friction speed per unit time is determined according to the reference pipeline pressure, the preset friction coefficient and the heat generated by friction; Determine the friction times according to the reference friction speed and friction path; When the number of frictions is not an integer, update the number of frictions; A marked friction speed and a marked normal pressure are determined according to the updated friction number, and the friction parameters are updated according to the marked friction speed, the marked normal pressure, the updated friction number and the friction path.

[0015] By adopting the above technical solution, the friction number is obtained according to the excess of the friction normal pressure and the reference pipeline pressure. When the friction number is not an integer, the friction number is updated and the marked friction speed and the marked normal pressure are obtained. The friction parameters are updated by the marked friction speed, the marked normal pressure, the updated friction number and the friction path, so that the operation of the friction device can be controlled without damaging the pipeline structure.

[0016] Optionally, also include: Determine the vibration frequency based on the updated friction parameters and pipe specifications; Determine the quality of ice melting based on average ice thickness, ice parameters, and marked condensation range; The vibration force is determined based on the vibration frequency, the mass of the melted ice, and the center of condensation; The melting mass per unit time is determined based on the heat generated by friction and the parameters of the ice cube; Determine the thickness of the water film based on the melting quality and the marked condensation range; Determine the water film adhesion according to the water film thickness; Determine the estimated drop time based on the vibration force and the water film adhesion force, and obtain the operating time of the friction device; Update the thermal image to recover the ice based on when the run time matches the estimated drop time.

[0017] By adopting the above technical scheme, the updated friction parameters, pipeline specifications, average ice thickness, ice parameters and marked condensation range are analyzed to obtain vibration force, and then the heat generated by friction, ice parameters and marked condensation range are analyzed to obtain water film adhesion, and the estimated drop time is obtained by the water film adhesion and vibration force. When the operating time is consistent with the estimated drop time, the thermal image is updated to recover the ice, so that the time when the ice falls can be known and recovered, reducing the impact of the ice on the acetylene extraction process.

[0018] Optionally, the method for determining the estimated drop time includes: Determine the vibration separation distance according to the pipe specifications; Determine the vibration transmission variation range based on the supplementary friction range and the vibration interval distance; Determine the marked vibration force for each vibration transmission variation range based on the vibration force, pipe specifications and vibration interval distance; Determine the marker adhesion based on the vibration transmission variation range and water film adhesion; Determine the marker drop time based on the marker vibration force and marker adhesion force; Update the estimated drop time based on the marked drop time.

[0019] By adopting the above technical scheme, the pipeline specifications, the marked extension width and the marked condensation range are analyzed to obtain the vibration transmission variation range and the marked vibration force, and the vibration transmission variation range and the water film adhesion are analyzed to obtain the marked adhesion. The marked vibration force and the water film adhesion are then used to update the estimated drop time, so that the drop time required for the range of ice that is not directly affected by the vibration of the friction device can be known, thereby improving the accuracy of the estimated drop time.

[0020] Optional, calculation method for base friction speed: V=Q / μN, V is the reference friction velocity, Q is the heat generated by friction, μ is the friction coefficient, and N is the reference pipeline pressure.

[0021] By adopting the above technical solution, the reference friction speed is calculated by using the above formula, thereby improving the accuracy of the reference friction speed.

[0022] In the second aspect, the present application provides an acetylene efficient extraction control system based on low temperature separation, which adopts the following technical solution: An acetylene efficient extraction control system based on low temperature separation, comprising: An acquisition module is used to acquire gas flow, detect thermal images, condensation flow rate, scanning information, ambient temperature and operating time; A memory for storing an acetylene efficient extraction control method based on low temperature separation; The processor is used to load, execute and implement the program stored in the memory.

[0023] In a third aspect, the present application provides a terminal, which adopts the following technical solution: A terminal comprises a memory and a processor. The memory stores a method for efficiently extracting acetylene based on low-temperature separation and can be loaded and executed by the processor.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The marked condensation range is obtained by analyzing the gas flow, thermal image detection and condensation flow rate, and the friction parameters are obtained by analyzing the marked condensation range to control the friction device to rub the outer wall of the pipeline, so that the friction device can generate heat to the pipeline to melt the ice, reduce the probability of pipeline blockage, and improve the efficiency of acetylene extraction; 2. The friction heat and friction path per unit time are obtained by analyzing the ambient temperature, thermal image detection, condensation flow rate and marked condensation range, and then the friction parameters are obtained by the friction heat and friction path, so as to improve the accuracy of the friction parameters; 3. The estimated falling time is obtained through the water film adhesion and vibration force. When the running time is consistent with the estimated falling time, the thermal image is updated to recover the ice cubes, so that the time when the ice cubes fall can be known and recovered, reducing the impact of ice cubes on the acetylene extraction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a method flow chart of a method for efficiently extracting acetylene based on low temperature separation according to an embodiment of the present invention; Figure 2 is a method flow chart of a method for determining friction parameters according to an embodiment of the present invention; Figure 3 is a method flow chart of a method for determining a friction path according to an embodiment of the present invention; Figure 4is a flow chart of a method for determining heat generated by friction according to an embodiment of the present invention; Figure 5 The method flow after determining the friction parameters in the embodiment of the present invention is Figure 1 ; Figure 6 The method flow after determining the friction parameters in the embodiment of the present invention is Figure 2 ; Figure 7 It is a flow chart of the method after determining the estimated drop time according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] A method for efficiently extracting acetylene based on low-temperature separation is disclosed. The outer wall of a pipeline is rubbed by a friction device to melt ice in the pipeline. The friction device is further adjusted according to the condensation range of the ice and the vibration of the friction device. Thus, the friction device can generate heat for the pipeline to melt the ice, reduce the probability of pipeline blockage, and improve the efficiency of acetylene extraction.

[0028] Reference Figure 1 The present application embodiment discloses a method for efficiently extracting and controlling acetylene based on low temperature separation, comprising the following steps: Step S100: Obtain the gas flow in the pipeline.

[0029] Gas flow refers to the flow of gas transported by a pipeline. The gas is a mixed gas containing acetylene and can be detected by a preset flow sensor.

[0030] Step S101: when the gas flow rate is inconsistent with a preset reference flow rate, a detection thermal image of a preset detection position is obtained.

[0031] The reference flow is the flow rate of gas delivered when there is no ice or leakage in the pipeline set by the technician. The detection position is the position set by the technician to detect whether the pipeline is frozen, and the detection position is the condenser inlet. The detection thermal image refers to the thermal image of the detection position. When the gas flow rate is inconsistent with the reference flow rate, it means that there is an abnormality such as ice or leakage in the pipeline. The detection position is scanned by a preset thermal imager to form a detection thermal image.

[0032] Step S102: determining the estimated range of ice condensation according to the detected thermal image and the preset reference detection color.

[0033] The reference detection color is the color of ice in the detection thermal image set by the technician. The condensation estimation range refers to the estimated range of ice appearing at the detection position. The range of the reference detection color is selected from the detection thermal image as the condensation estimation range.

[0034] Step S103: obtaining a condensation flow rate according to the condensation estimation range.

[0035] The condensation flow rate refers to the flow rate of the gas within the condensation estimation range, and the flow rate within the condensation estimation range is detected by a preset ultrasonic sensor as the condensation flow rate.

[0036] Step S104: when the condensation flow rate is inconsistent with the preset reference flow rate, scanning information is obtained according to the condensation estimated range.

[0037] The reference flow rate is the flow rate of the gas when no ice appears at the detection position set by the technician. The scanning information refers to the information of the estimated range of condensation scanned. When the condensation flow rate is inconsistent with the preset reference flow rate, it means that ice appears on the inner wall of the pipe at the detection position. Then, the information of the estimated range of condensation scanned by the preset infrared sensor is used as the scanning information. The scanning information includes the parameter information of the light refraction when the infrared scan pipeline occurs.

[0038] Step S105: Determine the marker coagulation range according to the scanning information.

[0039] The reference refraction information is the refraction information set by the technician when the infrared sensor scans the pipeline. The marked condensation range number refers to the range where ice appears in the pipeline. The marked condensation range is formed by connecting and combining the positions of each parameter information in the scanning information that is different from the reference refraction information.

[0040] Step S106: determining the friction parameter according to the marked condensation range, and controlling the preset friction device to rub the outer wall of the pipeline with the friction parameter.

[0041] The friction device refers to a device that rubs against 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 allows the pushing device and the friction head to move circumferentially along the outer wall of the pipeline. The pushing device is used to drive the friction head to apply normal pressure to the pipeline. The pushing device can be a telescopic rod and an air pump. Guide rails are arranged on both sides of the pipeline for the annular guide rail to slide axially along the pipeline.

[0042] Friction parameters refer to parameters used to control the operation of friction devices. Friction parameters include friction path, friction speed, friction normal pressure and friction times. Friction speed refers to the distance the friction device moves per unit time, friction path refers to the path for controlling the friction device to perform friction, friction normal pressure refers to the normal pressure exerted on the pipeline by the friction device when it operates at the friction parameter. The value of the friction speed in the friction parameter is the same as the distance value of the friction path, and the number of friction times is 1.

[0043] The friction parameters are obtained by analyzing the marked condensation range, and the friction device is controlled to rub the outer wall of the pipeline with the friction parameters.

[0044] Reference Figure 2 , the methods for determining the friction parameters include: Step S200: Acquire the ambient temperature of the pipeline.

[0045] The ambient temperature refers to the temperature of the environment surrounding the pipeline, and the temperature of the environment surrounding the pipeline is detected by a preset temperature sensor as the ambient temperature.

[0046] Step S201: determining a correction coefficient according to the ambient temperature and the detected thermal image.

[0047] The correction coefficient refers to the coefficient used to correct the heat actually transferred to the ice by the friction device. The side temperatures on both sides of the marked condensation range are obtained by detecting the thermal image, and the side temperatures and the ambient temperature are input into the preset thermal database to match the correction coefficient.

[0048] The heat database contains the corresponding relationship between the side temperature, the ambient temperature and the correction coefficient. The heat database is set manually and will not be described in detail here.

[0049] Step S202: Determine the average thickness of ice cubes according to the condensation flow rate, gas flow rate and preset pipeline specifications.

[0050] The pipeline specifications are the parameters set by the technicians, such as the size of the pipeline at the detection location, material strength, friction coefficient, maximum normal pressure, and minimum distance of force change when vibration is transmitted. The average thickness of ice refers to the average thickness of ice in the marked condensation range. The reference cross-sectional area is retrieved from the pipeline specifications, and the quotient of the condensation flow rate and the gas flow rate at each location is calculated to obtain different cross-sectional areas. The sum of the cross-sectional areas different from the reference cross-sectional area is calculated to obtain the ice volume. The quotient of the ice volume and the area of ​​the marked condensation range is calculated as the average thickness of ice.

[0051] Step S203: determining the melting heat of ice according to the marked condensation range, the average thickness of ice, the preset ice parameters and the correction coefficient.

[0052] The ice parameters are parameters such as the density and latent heat value of ice set by technicians. The melting heat of ice refers to the total heat transferred to the ice by the friction device to melt the ice. The heat required to melt the ice is calculated by marking the condensation range, the average thickness of the ice, the latent heat value of the ice and the density of the ice, and then the product of the required heat and the correction coefficient is calculated as the melting heat of the ice. The calculation method of the heat required to melt ice is common knowledge among technicians in this field and will not be described in detail here.

[0053] Step S204: determining the frictional heat per unit time according to the melting heat of the ice cube and the preset reference time.

[0054] The reference time is the maximum time required to melt the ice set by the technicians. The heat generated by friction refers to the heat transferred to the ice by the friction device per unit time. The heat generated by friction is calculated by dividing the quotient of the heat of melting the ice by the reference time.

[0055] Step S205: determining the friction path according to the marked coagulation range.

[0056] The friction path is the movement along the axial direction of the pipeline or the movement along the circumferential direction of the pipeline. The friction path is obtained by analyzing the marked condensation range.

[0057] Step S206: determining friction parameters according to the friction heat and the friction path.

[0058] The friction normal pressure is calculated by the friction heat and the distance value in the friction path, the speed corresponding to the distance value in the friction path per unit time is taken as the friction speed, and the friction path, normal pressure and friction speed are taken as friction parameters. The calculation method of normal pressure is common knowledge for those skilled in the art and will not be elaborated here.

[0059] Reference Figure 3 , the method for determining the friction path includes: Step S300: determining the coagulation center point according to the marked coagulation range.

[0060] The coagulation center point refers to the center point of the marked coagulation range. The coagulation center point is obtained by analyzing the marked coagulation range. The analysis method of the coagulation center point is common knowledge to those skilled in the art and will not be described in detail here.

[0061] Step S301: Determine the axial coverage range and the circumferential coverage range according to the preset friction device specifications and the coagulation center point.

[0062] The friction device specifications are the size specifications of the friction device set by the technicians. The axial coverage range refers to the range that the friction device can cover when it moves along the axial direction of the pipeline, and the circumferential coverage range refers to the range that the friction device can cover when it moves 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 the axial width on the pipeline with the movement of the condensation center point is taken as the axial coverage range, and the range covered by the wide circumferential width on the pipeline with the movement of the condensation center point is taken as the circumferential coverage range.

[0063] Step S302: Determine the axial inclusion range according to the axial coverage range and the mark condensation range.

[0064] The axial inclusion range refers to the range where the axial coverage range intersects with the marked condensation range, and the range where the axial coverage range intersects with the marked condensation range is selected from the axial coverage range as the axial inclusion range.

[0065] Step S303: Determine the circumferential inclusion range according to the circumferential coverage range and the mark condensation range.

[0066] The circumferential inclusion range refers to the range where the circumferential coverage range intersects with the mark condensation range, and the range where the circumferential coverage range intersects with the mark condensation range is selected from the circumferential coverage range as the circumferential inclusion range.

[0067] Step S304: Determine the friction path according to the axial inclusion range and the circumferential inclusion range.

[0068] By comparing the area sizes corresponding to the axial inclusion range and the circumferential inclusion range, when the area of ​​the axial inclusion range is larger than the area of ​​the circumferential inclusion range, the path of the coagulation center point and axial movement within the axial inclusion range is used as the friction path.

[0069] When the area of ​​the circumferential inclusion range is larger than the area of ​​the axial inclusion range, the path of the coagulation center point and the circumferential movement within the circumferential inclusion range is used as the friction path.

[0070] Reference Figure 4 , methods for determining the subsequent heat generated by friction include: Step S400: Determine the coagulation extension width according to the friction path and the marked coagulation range.

[0071] The condensation extension width refers to the width of the marked condensation range extending from the friction path as the center to both sides of the friction path. Taking the friction path as the center line, the vertical distance between the position points on the contour on both sides of the center line of the marked condensation range and the center line is taken as the condensation extension width.

[0072] Step S401: selecting a condensation extension width exceeding a preset reference coverage distance from the condensation extension widths as a mark extension width, and taking the mark extension width with the largest value as a target extension width.

[0073] The reference coverage distance is the half-width distance parallel to the condensation extension width on the friction device set by the technician. The marking extension width refers to the condensation extension width exceeding the reference coverage distance, and the condensation extension width exceeding the reference coverage distance is selected from the condensation extension width as the marking extension width.

[0074] The target extension width refers to the maximum mark extension width, and the mark extension width with the largest value is selected from the mark extension widths as the target extension width.

[0075] Step S402: determining a supplementary friction range according to the mark extension width, the friction path and the mark coagulation range, and controlling an extension device preset on the friction device to extend with a target extension width.

[0076] The supplementary friction range refers to the marked condensation range that is not covered when the friction device runs in the friction path. The range not covered by the friction device is selected from the marked condensation range, and the range of the target extension width is used as the supplementary friction range. The extension device refers to a heat conducting sheet arranged on the friction device and used to guide the heat on the friction device to the supplementary friction range. The heat conducting sheet and the pipeline are in contact with each other.

[0077] Step S403: determining the detection temperature difference according to the ambient temperature, the heat generated by friction and the preset extension specification.

[0078] The extension specifications are the dimensions and thermal conductivity of the extension device set by the technicians. The detection temperature difference refers to the temperature difference between the heat plate and the environment when it guides the friction to generate heat. The detection temperature difference is matched by inputting the ambient temperature, the heat generated by friction, and the thermal conductivity of the extension device into the preset thermal conductivity database. The thermal conductivity database contains the correspondence between the ambient temperature, the heat generated by friction, the thermal conductivity of the extension device, and the detection temperature difference. The thermal conductivity database is set manually and will not be described in detail here.

[0079] Step S404: updating the friction-generated heat according to the supplementary friction range and the detected temperature difference.

[0080] The coefficient is matched by inputting the supplementary friction range and the detected temperature difference into the preset correction database, and the product of the coefficient and the frictional heat is calculated as the new frictional heat. The correction database contains the corresponding relationship between the supplementary friction range, the detected temperature difference and the coefficient. The correction database is set manually and will not be described in detail here.

[0081] Reference Figure 5 , the methods after determining the friction parameters include: Step S500: obtaining the friction normal pressure according to the friction parameter.

[0082] By taking the friction normal pressure from the friction parameters.

[0083] Step S501: retrieve the reference pipeline pressure according to the pipeline specification.

[0084] The base pipeline pressure refers to the maximum normal pressure that the pipeline can withstand. The base pipeline pressure is obtained from the pipeline specifications.

[0085] Step S502: When the friction normal pressure exceeds the reference pipeline pressure, a reference friction speed per unit time is determined according to the reference pipeline pressure, a preset friction coefficient, and the heat generated by friction.

[0086] The friction coefficient is the coefficient of friction between the friction device and the pipeline set by the technician. When the friction normal pressure exceeds the reference pipeline pressure, it means that the friction device will deform the pipeline when operating at the friction parameter. The reference friction speed is calculated by the reference pipeline pressure, friction coefficient and friction heat. The calculation method of the reference friction speed is: V=Q / μN, V is the reference friction speed, Q is the friction heat, μ is the friction coefficient, and N is the reference pipeline pressure.

[0087] Step S503: determining the number of friction times according to the reference friction speed and the friction path.

[0088] The friction number refers to the number of times the friction device moves back and forth on the friction path when it runs at the reference friction speed. The friction number 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.

[0089] Step S504: When the number of frictions is not an integer, update the number of frictions.

[0090] When the friction number is not an integer, it means that the friction device has a partial marked condensation range that has not completed friction coverage after the reference time, so the decimal of the friction number is removed, and the friction number without decimal is added by one to form a new friction number.

[0091] Step S505: Determine the marked friction speed and the marked normal pressure according to the updated friction times, and update the friction parameters according to the marked friction speed, the marked normal pressure, the updated friction times and the friction path.

[0092] The marked friction speed refers to the speed of the friction device per unit time when running at the updated friction times, and the product of the friction path and the updated friction times is calculated as the marked friction speed. The marked normal pressure refers to the normal pressure generated by the friction device on the pipeline when running at the updated friction times and the marked friction speed, and the marked normal pressure is calculated by referring to the calculation method of the reference friction speed in step S502 by using the marked friction speed, friction coefficient and friction generated heat, and the marked friction speed, marked normal pressure, updated friction times and friction path are used as new friction parameters.

[0093] Reference Figure 6 , the method after determining the friction parameter also includes: Step S600: Determine the vibration frequency according to the updated friction parameter and pipeline specifications.

[0094] The vibration frequency refers to the frequency of the vibration generated by the pipeline when the friction device runs with the updated friction parameters. The vibration frequency is matched by inputting the updated friction parameters and pipeline specifications into the preset vibration database. The vibration database contains the correspondence between friction parameters, pipeline specifications and vibration frequencies. The vibration database is set manually and will not be described in detail here.

[0095] Step S601: Determine the melting quality of ice cubes according to the average thickness of ice cubes, ice cube parameters and marked condensation range.

[0096] The ice melting mass refers to the mass of the ice that needs to be melted. The ice melting mass 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 ice melting mass is common knowledge to those skilled in the art and will not be elaborated here.

[0097] Step S602: Determine the vibration force according to the vibration frequency, the mass of the melted ice, and the center of condensation.

[0098] Vibration force refers to the force applied to 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 melted ice into the vibration database, and then the angle of ice attachment is known through the condensation center and the center of the pipeline. The vertical component of the ice is calculated through the angle and the mass of melted ice. When the condensation center is below the center of the pipeline, the vertical component is negative, and when the condensation center is above the center of the pipeline, the vertical component is positive. The sum of the vertical component and the initial vibration force is calculated as the vibration force.

[0099] The vibration database also includes the correspondence between vibration frequency, ice melt mass and initial vibration force, which will not be elaborated here.

[0100] Step S603: Determine the melting mass per unit time according to the frictional heat and ice parameters.

[0101] 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 ice in the ice cube parameters. The calculation method of the melting mass is common knowledge among technicians in this field and will not be elaborated here.

[0102] Step S604: Determine the thickness of the water film according to the melting quality and the marked condensation range.

[0103] The water film thickness refers to the thickness of the water film generated by the marked condensation range per unit time, and the water film thickness is calculated by the melt mass and the marked condensation range. The calculation method of the water film thickness is common knowledge to those skilled in the art and will not be described in detail here.

[0104] Step S605: determining the water film adhesion according to the generated water film thickness.

[0105] Water film adhesion refers to the adhesion of water with the thickness of the water film, and the water film adhesion is matched by inputting the thickness of the water film into the preset adhesion database. The estimated falling time refers to the estimated length of time that the ice with the marked condensation range will fall when the friction device is running.

[0106] The attachment database contains the corresponding relationship between vibration force, water film thickness, water film adhesion and estimated drop time. The attachment database is set manually and will not be described in detail here.

[0107] Step S606: Determine the estimated drop time according to the vibration force and the water film adhesion force, and obtain the operation time of the friction device.

[0108] The estimated drop time is matched by inputting the vibration force and the water film adhesion force into the adhesion database. The running time refers to the length of time the friction device runs. When the friction device runs, the timing starts and the timing result is used as the running time.

[0109] Step S607: When the running time is consistent with the estimated falling time, the detected thermal image is updated to recover the ice cubes.

[0110] The recovery area is an area used to recover ice that has fallen into the condenser. When the running time is consistent with the estimated falling time, it means that the ice has fallen, and the thermal imager is controlled to scan the detection position and the condenser to form a new detection thermal image, and the position of the reference detection color is identified from the detection thermal image, and the preset recovery device is controlled to recover the ice at the position of the reference detection color. The recovery device refers to a scraper set in the condenser to move the ice to the recovery area.

[0111] Reference Figure 7 , methods for determining the estimated drop time include: Step S700: Determine the vibration interval distance according to the pipeline specifications.

[0112] The vibration separation distance refers to the minimum distance at which changes occur when the vibration force is transmitted. The vibration separation distance is obtained from the pipe specifications.

[0113] Step S701: Determine the vibration transmission variation range according to the supplementary friction range and the vibration interval distance.

[0114] The vibration transmission variation range refers to the range in which vibration force transmission changes in the supplementary friction range. Straight lines parallel to the friction path are drawn at intervals of the vibration interval distance, and the range of the supplementary friction range contained in each straight line is taken as the vibration transmission variation range.

[0115] Step S702: Determine the marked vibration force received by each vibration transmission variation range according to the vibration force, pipeline specifications and vibration interval distance.

[0116] The marked vibration force refers to the vibration force received by the vibration transmission variation range. The vibration force, pipeline specifications and vibration interval distance are input into the preset vibration transmission database to match the marked vibration force. The vibration transmission database contains the corresponding relationship between vibration force, pipeline specifications, vibration interval distance and marked vibration force. The vibration transmission database is set manually and will not be described in detail here.

[0117] Step S703: determining the mark adhesion according to the vibration transmission variation range and the water film adhesion.

[0118] The mark adhesion refers to the water film adhesion within the vibration transmission variation range. The mark adhesion is obtained by referring to step S604 and step S605 through the vibration transmission variation range.

[0119] Step S704: Determine the marker drop time according to the marker vibration force and the marker adhesion force.

[0120] The marked drop time refers to the estimated time length of ice falling within the vibration transmission variation range. Referring to step S606, the marked vibration force and the marked adhesion force are used to obtain the marked drop time.

[0121] Step S705: Update the estimated drop time according to the marked drop time.

[0122] By marking the drop time and the estimated drop time, the time length value with the largest value is selected as the new estimated drop time.

[0123] Based on the same inventive concept, an embodiment of the present invention provides an acetylene efficient extraction control system based on low temperature separation, comprising: An acquisition module is used to acquire gas flow, detect thermal images, condensation flow rate, scanning information, ambient temperature and operating time; A memory for storing an acetylene efficient extraction control method based on low temperature separation; The processor is used to load, execute and implement the program stored in the memory.

[0124] Based on the same inventive concept, an embodiment of the present invention provides a terminal including a memory and a processor, wherein the memory stores a method for efficiently extracting and controlling acetylene based on low-temperature separation that can be loaded and executed by the processor.

[0125] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, 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 process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0126] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A method for efficiently extracting acetylene based on low temperature separation, characterized in that: include: Get the gas flow in the pipeline; When the gas flow rate is inconsistent with the preset reference flow rate, a detection thermal image of a preset detection position is obtained; Determine the estimated range of ice condensation based on the detection of thermal images and preset reference detection colors; According to the estimated range of condensation, the condensation flow rate is obtained; When the condensation flow rate is inconsistent with the preset reference flow rate, scanning information is obtained according to the condensation estimated range; Determine the scope of the marked coagulation according to the scanning information; The friction parameters are determined according to the marked condensation range, and the preset friction device is controlled to rub the outer wall of the pipeline with the friction parameters.

2. The method for efficiently extracting acetylene based on low temperature separation according to claim 1, characterized in that: The methods for determining friction parameters include: Get the ambient temperature of the pipeline; Determine the correction factor based on the ambient temperature and the detected thermal image; Determine the average ice thickness based on the condensation flow rate, gas flow rate and preset pipeline specifications; Determine the melting heat of ice according to the marked condensation range, average ice thickness, preset ice parameters and correction factor; The heat generated by friction per unit time is determined based on the melting heat of ice and the preset reference time; Determine the friction path by marking the condensation range; The friction parameters are determined based on the friction heat generated and the friction path.

3. The method for efficiently extracting acetylene based on low temperature separation according to claim 2, characterized in that: Methods for determining the friction path include: Determine the coagulation center point according to the marked coagulation range; Determine the axial coverage and circumferential coverage according to the preset friction device specifications and coagulation center point; The axial inclusion range is determined based on the axial coverage range and the marked condensation range; Determine the circumferential inclusion range based on the circumferential coverage range and the marked condensation range; The friction path is determined based on the axial inclusion range and the circumferential inclusion range.

4. The method for efficiently extracting acetylene based on low temperature separation according to claim 2, characterized in that: Methods for determining the amount of heat generated by friction include: Determine the coagulation extension width based on the friction path and the marked coagulation range; Selecting a condensation extension width exceeding a preset reference coverage distance from the condensation extension widths as a mark extension width, and taking the mark extension width with the largest value as a target extension width; Determine the supplementary friction range according to the mark extension width, the friction path and the mark coagulation range, and control the extension device preset on the friction device to extend with the target extension width; Determine the detection temperature difference based on the ambient temperature, frictional heat and preset extension specifications; The friction generated heat is updated based on the supplementary friction range and the detected temperature difference.

5. The method for efficiently extracting acetylene based on low temperature separation according to claim 2, characterized in that: The methods after determining the friction parameters include: The friction normal pressure is retrieved according to the friction parameter; According to the pipeline specifications, the reference pipeline pressure can be retrieved; When the friction normal pressure exceeds the reference pipeline pressure, the reference friction speed per unit time is determined according to the reference pipeline pressure, the preset friction coefficient and the heat generated by friction; Determine the friction times according to the reference friction speed and friction path; When the number of frictions is not an integer, update the number of frictions; A marked friction speed and a marked normal pressure are determined according to the updated friction number, and the friction parameters are updated according to the marked friction speed, the marked normal pressure, the updated friction number and the friction path.

6. The method for efficiently extracting acetylene based on low temperature separation according to claim 5, characterized in that: Also includes: Determine vibration frequency based on updated friction parameters and pipe specifications; Determine the quality of ice melting based on average ice thickness, ice parameters, and marked condensation range; The vibration force is determined based on the vibration frequency, the mass of the melted ice, and the center of condensation; The melting mass per unit time is determined based on the heat generated by friction and the parameters of the ice cube; Determine the thickness of the water film based on the melting quality and the marked condensation range; Determine the water film adhesion according to the water film thickness; Determine the estimated drop time based on the vibration force and the water film adhesion force, and obtain the operating time of the friction device; Update the thermal image to recover the ice based on when the run time matches the estimated drop time.

7. The method for efficiently extracting acetylene based on low temperature separation according to claim 6, characterized in that: Methods for determining the estimated drop time include: Determine the vibration separation distance according to the pipe specifications; Determine the vibration transmission variation range based on the supplementary friction range and the vibration interval distance; Determine the marked vibration force for each vibration transmission variation range based on the vibration force, pipe specifications and vibration interval distance; Determine the marker adhesion based on the vibration transmission variation range and water film adhesion; Determine the marker drop time based on the marker vibration force and marker adhesion force; Update the estimated drop time based on the marked drop time.

8. The method for efficiently extracting acetylene based on low temperature separation according to claim 5, characterized in that: Calculation method of reference friction speed: V=Q / μN, V is the reference friction velocity, Q is the heat generated by friction, μ is the friction coefficient, and N is the reference pipeline pressure.

9. An acetylene efficient extraction control system based on low temperature separation, characterized in that: include: An acquisition module is used to acquire gas flow, detect thermal images, condensation flow rate, scanning information, ambient temperature and operating time; A memory, used to store an acetylene efficient extraction control method based on low temperature separation according to any one of claims 1 to 8; The processor is used to load, execute and implement the program stored in the memory.

10. A terminal, characterized in that: The invention comprises a memory and a processor, wherein the memory stores a method for efficiently extracting acetylene based on low-temperature separation which can be loaded and executed by the processor as claimed in any one of claims 1 to 8.

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