A method, system and detection device for detecting the airtightness of a gas self-closing valve

Abstract

The present invention relates to a gas self-closing valve airtightness detection method, system and detection device, belonging to the technical field of gas self-closing valves, which includes: based on image detection information, framing the image corresponding to the characteristics of the gas self-closing valve as the image to be clamped; determining the manufacturing specifications and the shape to be clamped according to the image to be clamped; determining the clamping shape according to the manufacturing specifications; determining the clamping position according to the shape to be clamped and the clamping shape, and controlling the clamping device to clamp the gas self-closing valve to the detection position based on the clamping position; when the trigger information is consistent with the start information, controlling the clamping device to clamp the gas self-closing valve, and controlling the detection device to detect the gas self-closing valve based on the airtightness detection method; determining whether the detection device outputs abnormal information; when the detection device outputs abnormal information, defining the gas self-closing valve on the clamping device as an abnormal state and clamping it to the placement area. This application has the effect of improving the efficiency of airtightness detection of gas self-closing valves.

Description

Technical Field

[0001] The present invention relates to the technical field of gas self - closing valves, and in particular to a method, system and detection device for detecting the air tightness of gas self - closing valves. Background Art

[0002] A gas self - closing valve refers to a safety device installed in a gas pipeline system, which can automatically cut off the gas supply when the gas pressure appears negative or over - pressure and the gas flow exceeds the safety value, preventing gas leakage from causing safety accidents.

[0003] When the air tightness of a gas self - closing valve needs to be detected, the gas self - closing valve is manually placed at the detection position. Since the outer surface of the gas self - closing valve is usually provided with many rounded edges, it is necessary to manually hold the gas self - closing valve all the time to keep its posture unchanged until the gas self - closing valve is fixed on the air tightness detection device, and compressed air or gas is injected into the gas self - closing valve. The pressure change during inflation is detected through the gas self - closing valve to determine whether there is air leakage in the product under test.

[0004] When the air tightness of a gas self - closing valve needs to be detected, it is necessary to manually hold the gas self - closing valve all the time until it is fixed, which consumes too much time and results in too low efficiency of the air tightness detection of the gas self - closing valve. Summary of the Invention

[0005] In order to improve the efficiency of detecting the air tightness of a gas self - closing valve, the present invention provides a method, system and detection device for detecting the air tightness of a gas self - closing valve.

[0006] In the first aspect, the present invention provides a method for detecting the air tightness of a gas self - closing valve, adopting the following technical solution:

[0007] A method for detecting the air tightness of a gas self - closing valve includes:

[0008] Obtaining image detection information of the gas self - closing valve at a preset position to be measured;

[0009] Based on the image detection information, the image corresponding to the preset characteristics of the gas self - closing valve is framed, and the framed image is used as the image to be clamped;

[0010] Determining the manufacturing specifications and the shape to be clamped of the gas self - closing valve according to the image to be clamped;

[0011] Determining the clamping shape according to the manufacturing specifications;

[0012] Determining the clamping position according to the shape to be clamped and the clamping shape, and controlling a preset clamping device to clamp the gas self - closing valve to a preset detection position based on the clamping position;

[0013] Obtaining a trigger information at the detection position;

[0014] When the trigger information is consistent with the preset start information, control the preset clamping device to clamp the gas self-closing valve, and control the preset detection device to detect the gas self-closing valve based on the preset airtightness detection method;

[0015] When the detection device outputs the preset abnormal information, define the gas self-closing valve on the clamping device as an abnormal state and clamp it to the preset placement area.

[0016] By adopting the above technical solution, analyze the gas self-closing valve at the position to be measured to obtain the shape to be clamped and the clamping shape, obtain the clamping position through the shape to be clamped and the clamping shape, control the clamping device to clamp the gas self-closing valve and move it to the detection device for airtightness detection, and control the clamping device to clamp the gas self-closing valve to the placement area according to the situation where the detection device outputs abnormal information, so as to reduce the time consumed by manual support of the gas self-closing valve until it is fixed, and thus improve the efficiency of airtightness detection of the gas self-closing valve.

[0017] Optionally, the preset airtightness detection method includes:

[0018] Determine the actual inflation volume and the pressure holding time based on the manufacturing specifications;

[0019] Control the inflation device preset on the clamping device to inflate the outlet pipeline based on the actual inflation volume, control the inflation device to hold the pressure of the gas self-closing valve for the pressure holding time when the inflation is completed, and obtain the air pressure detection value of the outlet pipeline;

[0020] Determine whether the air pressure detection value exceeds the preset air pressure reference detection value;

[0021] If the air pressure detection value exceeds the preset air pressure reference detection value, output the preset abnormal leakage information to the detection device based on the outlet pipeline;

[0022] If the air pressure detection value does not exceed the preset air pressure reference detection value, determine the high-pressure inflation volume and the high-pressure duration based on the manufacturing specifications;

[0023] Control the inflation device to inflate the outlet pipeline and the inlet pipeline preset on the gas self-closing valve based on the high-pressure inflation volume, control the inflation device to hold the pressure of the gas self-closing valve for the high-pressure duration when the inflation is completed, and obtain the inlet pressure detection value of the inlet pipeline;

[0024] Update the air pressure detection value of the outlet pipeline according to the inlet pressure detection value;

[0025] Output the preset abnormal guidance information based on the inlet pressure detection value and / or the updated air pressure detection value exceeding the preset high-pressure reference detection value.

[0026] By adopting the above technical solution, the actual inflation volume, pressure holding time, high-pressure inflation volume, and high-pressure duration are obtained based on the manufacturing specifications of the gas self-closing valve, and the gas self-closing valve is inflated to detect its airtightness. Based on the comparison between the air pressure detection value and the reference air pressure detection value, and the comparison between the intake pressure detection value and the updated air pressure detection value and the high-pressure reference detection value respectively, the output of the abnormal guidance information and the abnormal leakage information is obtained, so that the accuracy of the airtightness detection of the gas self-closing valve can be improved under different inflation conditions.

[0027] Optionally, a valve cap is provided on the gas self-closing valve, and the preset airtightness detection method further includes:

[0028] When both the intake pressure detection value and the updated air pressure detection value do not exceed the preset high-pressure reference detection value, the valve cap position is retrieved based on the manufacturing specifications;

[0029] Control the external leakage detection device preset on the detection device to move to the valve cap position and obtain the abutting air pressure detection information of the valve cap;

[0030] Determine whether the abutting air pressure detection information is 0;

[0031] If the abutting air pressure detection information is not 0, output the preset abnormal position information;

[0032] If the abutting air pressure detection information is 0, determine the external leakage inflation volume and the external leakage pressure holding time based on the manufacturing specifications;

[0033] Based on the external leakage inflation volume, control the detection inflation device preset on the external leakage detection device to inflate the valve cap, and when the inflation is completed, control the detection inflation device to hold the pressure of the gas self-closing valve for the external leakage pressure holding time, and update the intake pressure detection value and the air pressure detection value;

[0034] When the updated intake pressure detection value and / or air pressure detection value exceeds the preset reference external leakage detection value, output the preset abnormal position information.

[0035] By adopting the above technical solution, an understanding is obtained through the abutting air pressure detection information detected by the external leakage detection device. Based on whether the abutting air pressure detection information is 0, the external leakage inflation volume and the external leakage pressure holding time are obtained and inflated to update the intake pressure detection value and the air pressure detection value. By comparing the updated intake pressure detection value and the air pressure detection value with the reference external leakage detection value respectively, the abnormal position information is output based on the comparison result, so that the airtightness of the gas self-closing valve can be further detected to improve the accuracy of the airtightness detection of the gas self-closing valve.

[0036] Optionally, the method before outputting the preset abnormal position information further includes:

[0037] When the abutting air pressure detection information is not 0, control the external leakage detection device to lift a preset lifting distance and obtain the valve cap image information of the valve cap;

[0038] When the valve cap image information contains a preset foreign object feature, determine the foreign object position according to the valve cap image information and the foreign object feature;

[0039] Retrieve the valve cap installation range according to the manufacturing specifications;

[0040] When the foreign object position falls within the valve cap installation range, determine the foreign object area according to the valve cap image information and the foreign object feature;

[0041] Match the blowing power from a preset blowing database based on the foreign object area, and control a preset blowing device to blow the foreign object position with the blowing power and update the valve cap image information;

[0042] When there is a foreign object feature in the updated valve cap image information, retrieve the valve cap shape corresponding to the foreign object position based on the manufacturing specifications;

[0043] Determine the foreign object removal path according to the valve cap shape, and control a preset foreign object removal device to run along the foreign object removal path.

[0044] By adopting the above technical solutions, by understanding the foreign objects on the valve cap and blowing the foreign objects with the blowing power, if there is still image detection information of the foreign objects, control the foreign object removal device to run along the foreign object removal path to remove the foreign objects, thereby reducing the influence of the foreign objects on the airtightness detection of the gas self-closing valve.

[0045] Optionally, the method after updating the intake air pressure detection value and the air pressure detection value further includes:

[0046] Obtain the abutting image information of the abutting part between the external leakage detection device and the valve cap;

[0047] When the abutting image information contains a preset crack feature, determine the crack shape according to the abutting image information and the crack feature;

[0048] Determine the estimated crack length and the estimated average crack width based on the crack shape;

[0049] Obtain the usage time of the external leakage detection device and the abutting force corresponding to the usage time;

[0050] Calculate the difference between the usage time and a preset reference usage time and use it as a time deviation parameter;

[0051] Determine the estimated crack depth based on the time deviation parameter, the estimated crack length, and the abutting force;

[0052] Calculate the estimated leakage parameter based on the estimated crack length, the estimated average crack width, the estimated crack depth, and the abutting air pressure detection information;

[0053] Calculate the difference between the updated air pressure detection value and the reference external leakage detection value and use it as the external leakage deviation value;

[0054] When the estimated leakage parameter is consistent with the external leakage deviation value, repair the detection inflation device based on the estimated crack length, the estimated average crack width, and the estimated crack depth through a preset repair method;

[0055] When the gas self - closing valve completes the detection, output the preset device replacement information.

[0056] By adopting the above technical solution, understand the part of the external leakage detection device abutting the valve cap to obtain the crack shape, and obtain the estimated leakage parameter through the crack shape. According to the consistency between the estimated leakage parameter and the external leakage deviation value, repair the part of the external leakage detection device abutting the valve cap by a repair method, so that it is not easy for the part of the external leakage detection device abutting the valve cap to be damaged and affect the detection error of the airtightness of the gas self - closing valve.

[0057] Optionally, the preset repair method includes:

[0058] Calculate the estimated crack volume based on the estimated crack length, the estimated average crack width, and the estimated crack depth;

[0059] Determine the total repair amount based on the estimated crack volume;

[0060] Determine the repair path corresponding to the estimated crack length based on the abutting image information;

[0061] Control the preset repair device to repair the external leakage detection device based on the repair path and the total repair amount, and when the repair device is repairing, obtain the tray specification;

[0062] Determine the reference collection range according to the tray specification;

[0063] Determine the maximum collection quantity of the crack during repair based on the abutting image information and the reference collection range;

[0064] Determine the collection center point based on the reference collection range corresponding to each maximum collection quantity;

[0065] Determine the maximum collection time according to the total repair amount of each crack corresponding to the maximum collection quantity and the collection center point;

[0066] Determine a priority repair path based on the maximum collection quantity, control the repair device to repair along the priority repair path, control the preset tray device to move to the collection center point corresponding to the priority repair path and stay there for the maximum collection time, and take the repaired path as the repaired path;

[0067] The collection center point and the maximum collection time are updated according to the repaired path and the remaining repaired paths until all the abutting image information are repaired paths.

[0068] By adopting the above technical scheme, the cracks are understood to obtain the repair path and the total amount of repair, and the maximum collection time is obtained through the benchmark collection range. Then, the maximum collection quantity, collection center point and maximum collection time are used to control the operation of the repair device and the tray device until the abutment image information shows the repaired path. This makes it possible to repair the cracks while protecting the gas self-closing valve from the influence of dripping repair liquid.

[0069] Optional, preset repair methods also include:

[0070] Obtain the abutment specifications of the abutment portion between the external leakage detection device and the valve cap;

[0071] Determine the actual total amount of repair and total solidification time based on the estimated crack length, the estimated average crack width and the estimated crack depth;

[0072] Determine the annular repair cover according to the abutment specifications;

[0073] Based on the crack shape, the position corresponding to the maximum width of the crack in the estimated length is retrieved as the starting repair position, and the repair quantity is determined based on the starting repair position;

[0074] The annular repair cover is updated according to the initial repair position and the injection specification of the preset repair device;

[0075] Based on the initial repair position, the clamping device is controlled to place the updated annular repair cover on the detection and inflation device, and based on the actual total repair amount and the repair quantity, the repair device is controlled to repair the initial repair position;

[0076] Determine the maximum dwell time based on the total solidification time of each crack;

[0077] The airbag inflation amount is determined based on the abutment specification, and when the injection of the repair fluid is completed in all the repair devices, the airbag inflation amount is output to the airbag device preset in the annular repair cover;

[0078] When the abutment time of the annular repair cover reaches the maximum dwell time, the falling inflation amount is determined based on the abutment specification and the airbag inflation amount and output to the airbag device, and the clamping device is controlled to remove the annular repair cover.

[0079] By adopting the above technical solution, a ring-shaped repair cover is obtained by means of the abutment specification, the starting repair position, and the injection specification, and is covered on the part where the external leakage detection device abuts. The repair device is controlled to inject the repair liquid at the starting repair position, and the airbag device is controlled to operate by means of the abutment specification, so that while repairing the crack, the gas self-closing valve can be protected from the influence of the dripping repair liquid, and it is convenient to remove the ring-shaped repair cover.

[0080] Optionally, the calculation method of the estimated leakage parameter includes:

[0081] Q = (b × h³ × ΔP) / (K × μ × L),

[0082] Q is the estimated leakage parameter, b is the estimated average width of the crack, h is the estimated depth of the crack, ΔP is the deviation value between the preset standard atmospheric pressure and the abutment air pressure detection information, K is an experimental coefficient preset by the operator, μ is the gas dynamic viscosity of the gas for inflation by the inflation device and the detection inflation device preset by the operator, and L is the estimated length of the crack.

[0083] By adopting the above technical solution, the estimated leakage parameter is calculated through the above calculation formula, thereby improving the accuracy of the airtightness detection of the gas self-closing valve.

[0084] In a second aspect, the present application provides a gas self-closing valve airtightness detection system, adopting the following technical solution:

[0085] A gas self-closing valve airtightness detection system includes:

[0086] An acquisition module, configured to acquire image detection information, air pressure detection value, intake pressure detection value, image detection information, abutment air pressure detection information, usage time, abutment force, and abutment specification;

[0087] A memory, configured to store a program of a gas self-closing valve airtightness detection method;

[0088] A processor, configured to load and execute the program stored in the memory.

[0089] In a third aspect, the present application provides a gas self-closing valve airtightness detection device, adopting the following technical solution:

[0090] A gas self-closing valve airtightness detection device includes a memory and a processor, and a computer program capable of being loaded and executed by the processor is stored on the memory.

[0091] In summary, the present application includes at least one of the following beneficial technical effects:

[0092] 1. Analyze the gas self - closing valve at the position to be measured to obtain the shape to be clamped and the clamping shape, and obtain the clamping position based on the shape to be clamped and the clamping shape. Then control the clamping device to clamp the gas self - closing valve and move it to the detection device for airtightness detection. Control the clamping device to clamp the gas self - closing valve to the placement area according to the situation where the detection device outputs abnormal information, so as to reduce the time consumed by manual support of the gas self - closing valve until it is fixed, and thus improve the efficiency of airtightness detection of the gas self - closing valve;

[0093] 2. Obtain the actual inflation volume, pressure holding time, high - pressure inflation volume, and high - pressure duration according to the manufacturing specifications of the gas self - closing valve, and inflate the gas self - closing valve to detect its airtightness. Obtain the output situation of abnormal guidance information and abnormal leakage information based on the comparison between the air pressure detection value and the reference air pressure detection value, and the comparison between the intake pressure detection value and the updated air pressure detection value and the high - pressure reference detection value respectively, so as to improve the accuracy of airtightness detection of the gas self - closing valve under different inflation conditions;

[0094] 3. Obtain the annular repair cover according to the abutment specifications, starting repair position, and injection specifications, cover it on the part abutted by the external leakage detection device, control the repair device to inject the repair liquid at the starting repair position, and control the operation of the airbag device according to the abutment specifications, so as to protect the gas self - closing valve from being affected by the dripping of the repair liquid while repairing the crack, and facilitate the removal of the annular repair cover. Brief Description of the Drawings

[0095] Figure 1 is the overall structural schematic diagram of a gas self - closing valve according to an embodiment of the present invention;

[0096] Figure 2 is the method flow chart of airtightness detection of a gas self - closing valve according to an embodiment of the present invention;

[0097] Figure 3 is the method flow of the preset airtightness detection method according to an embodiment of the present invention Figure 1 ;

[0098] Figure 4 is the method flow of the preset airtightness detection method according to an embodiment of the present invention Figure 2 .

[0099] The names of the parts referred to by the above - mentioned numerical labels in the drawings are as follows: 1, valve body; 2, valve cap; 3, intake passage; 4, outlet passage; 5, valve flap. Detailed Embodiment

[0100] The present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0101] Refer toFigure 1 , a gas self - closing valve, applied to a method for detecting the airtightness of a gas self - closing valve, includes a valve body 1, a valve flap 5 arranged inside the valve body 1 and used to control the on - off of gas, a valve core connected to the valve flap 5 and used to manually control the valve flap 5 to turn the gas on and off, a spring arranged on the valve core and used to provide a closing force, and a valve cap 2 arranged on the valve core and used to manually press or automatically control the gas to enter the valve body 1. The gas self - closing valve controls the on - off of fluid through the valve flap 5 inside the valve body 1. When the gas self - closing valve is closed, the valve flap 5 deforms and contacts the inner wall of the valve body 1 to prevent the fluid from passing through the valve body 1. When the gas self - closing valve is opened, the valve flap 5 moves away from the valve body 1, allowing the fluid to pass through the valve body 1. An air inlet channel 3 and an air outlet channel 4 are arranged at both ends of the valve body 1.

[0102] Refer to Figure 2 , the embodiment of the present application discloses a method for detecting the airtightness of a gas self - closing valve, including the following steps:

[0103] Step S100: Obtain the image detection information of the gas self - closing valve at a preset position to be measured.

[0104] The position to be measured is the position where the gas self - closing valve with untested airtightness is placed set by the technician. The image detection information refers to the image of the position to be measured, and the image of the position to be measured is taken by a camera preset on the detection device as the image detection information.

[0105] Step S101: Based on the image detection information, frame out the image corresponding to the preset features of the gas self - closing valve, and use the framed - out image as the image to be clamped.

[0106] The features of the gas self - closing valve are the shape, color and other features of the gas self - closing valve set by the technician. The image to be clamped refers to the image of the gas self - closing valve that needs to be detected for airtightness. The image corresponding to the features of the gas self - closing valve is framed out from the image detection information as the image to be clamped.

[0107] Step S102: Determine the manufacturing specifications and the shape to be clamped of the gas self - closing valve according to the image to be clamped.

[0108] The manufacturing specifications refer to the size and other specifications of the manufacture of the gas self - closing valve. The parameter information of the gas self - closing valve is obtained by scanning the bar code on the gas self - closing valve in the image to be clamped as the manufacturing specifications. The shape to be clamped refers to the shape of the gas self - closing valve at the position to be measured, and the shape to be clamped is formed by the contour corresponding to the image to be clamped.

[0109] Step S103: Determine the clamping shape according to the manufacturing specifications.

[0110] The clamping shape refers to the shape when the gas self - closing valve can be clamped. By retrieving the shape with the largest size from the manufacturing specifications, such as a circle or a square, as the clamping shape, generally, the shape corresponding to the valve body 1 of the gas self - closing valve is used as the clamping shape.

[0111] Step S104: Determine the clamping position according to the shape to be clamped and the clamping shape, and control a preset clamping device to clamp the gas self - closing valve to a preset detection position based on the clamping position.

[0112] The detection position is the position set by the technician for detecting the airtightness of the gas self - closing valve, and the detection position is set on the detection device. The clamping position refers to the position corresponding to the gas self - closing valve at the position to be clamped by the clamping device. By overlapping and corresponding the clamping shape with the shape to be clamped, the position of the shape on the shape to be clamped that coincides with the clamping shape is used as the clamping position. The clamping device refers to a robotic arm used to clamp the gas self - closing valve for movement. By controlling the clamping device to clamp the gas self - closing valve at the position to be measured and move it to the detection position, it is convenient for subsequent airtightness detection.

[0113] Step S105: Obtain trigger information at the detection position.

[0114] The trigger information refers to the information used to check whether the gas self - closing valve is at the detection position, and the trigger information can be the pressure parameter information detected by a pressure sensor.

[0115] Step S106: When the trigger information is consistent with the preset start information, control a preset clamping device to clamp the gas self - closing valve, and control a preset detection device to detect the gas self - closing valve based on a preset airtightness detection method.

[0116] The clamping device refers to a device set on the detection device and used to clamp and fix the gas self - closing valve. The start information refers to the information used to control the start of the detection device. The start information can be the reference pressure information preset by the operator. When the trigger information is consistent with the start information, it indicates that the object at the detection position is the gas self - closing valve. Therefore, control the clamping device to clamp the gas self - closing valve, and control the detection device to perform airtightness detection on the gas self - closing valve through the airtightness detection method. The airtightness detection method refers to the method used to detect the airtightness of the gas self - closing valve. For the specific detection method, refer to Step S200 to Step S307, which will not be elaborated here.

[0117] Step S107: When the detection device outputs preset abnormal information, define the gas self - closing valve on the clamping device as an abnormal state and clamp it to a preset placement area.

[0118] The abnormal information is the prompt information set by technicians to prompt the operator for abnormalities such as leakage or component damage of the gas self - closing valve. The placement area is the area set by technicians where the gas self - closing valve corresponding to the abnormal state is placed. The abnormal state refers to the state corresponding to the gas self - closing valve with abnormalities such as leakage or component damage. When the detection device outputs abnormal information, it indicates that there are abnormalities such as leakage or component damage in the gas self - closing valve on the clamping device. Therefore, the gas self - closing valve on the clamping device is defined as the abnormal state, and the gas self - closing valve in the abnormal state of the clamping device is controlled to the placement area to facilitate the detection of other gas self - closing valves.

[0119] Refer to Figure 3 , the preset airtightness detection method includes:

[0120] Step S200: Determine the actual inflation volume and the pressure - holding time based on the manufacturing specifications.

[0121] The actual inflation volume refers to the volume of gas used to inflate the inside of the valve body 1, and the pressure - holding time refers to the time parameter value for maintaining the air pressure inside the valve body 1. The actual inflation volume and the pressure - holding time are matched from the preset inflation database according to the manufacturing specifications. The inflation database stores the actual inflation volume and the pressure - holding time corresponding to different manufacturing specifications under low - pressure or medium - pressure conditions. The inflation database is a database set by humans and will not be elaborated here. In this embodiment, the low - pressure is set to an air pressure of 0.6 KPa, and the medium - pressure is set to an air pressure of 15 KPa. The low - pressure and the medium - pressure are adjusted by those skilled in the art according to the actual situation and will not be elaborated here.

[0122] Step S201: Control the inflation device preset on the clamping device to inflate the outlet pipeline based on the actual inflation volume. When the inflation is completed, control the inflation device to hold the pressure of the gas self - closing valve for the pressure - holding time, and obtain the air - pressure detection value of the outlet pipeline.

[0123] The inflation device is a device used to inflate the outlet channel 4 and the inlet channel 3 to detect the airtightness of the gas self - closing valve. Inflation devices are provided on both sides of the clamping device. The air - pressure detection value refers to the pressure value of the leakage generated in the area of the outlet pipeline of the gas self - closing valve. By controlling the inflation device to inflate the outlet pipeline and, when the inflation is completed, controlling the inflation device to hold the pressure of the gas self - closing valve for the pressure - holding time, and then detecting the difference between the pressure parameter of the outlet pipeline detected by the pressure sensor preset on the clamping device and the pressure value of the low - pressure or medium - pressure corresponding to the actual inflation volume as the air - pressure detection value.

[0124] Step S202: Determine whether the air - pressure detection value exceeds the preset air - pressure reference detection value.

[0125] The air pressure reference detection value refers to the reference pressure deviation value used to detect whether the gas self - closing valve leaks. The air pressure reference detection value is set in advance by those skilled in the art and will not be elaborated here. By determining whether the air pressure detection value exceeds the air pressure reference detection value, it is determined whether there is a leak in the area of the gas outlet pipeline.

[0126] Step S203: If the air pressure detection value exceeds the preset air pressure reference detection value, based on the gas outlet pipeline, output the preset abnormal leakage information to the detection device.

[0127] The abnormal leakage information is the information set by the technician to prompt the operator that there is a leak in the area of the gas outlet pipeline. When the air pressure detection value exceeds the air pressure reference detection value, it indicates that there is a leak in the area of the gas outlet pipeline. Therefore, the detection device is controlled to output the abnormal leakage information.

[0128] Step S204: If the air pressure detection value does not exceed the preset air pressure reference detection value, determine the high - pressure inflation volume and the high - pressure duration based on the manufacturing specifications.

[0129] The high - pressure inflation volume refers to the inflation volume corresponding to detecting the leakage condition of the gas self - closing valve in the high - pressure state. The high - pressure duration refers to the pressure - maintaining time corresponding to inflating the gas self - closing valve with the high - pressure inflation volume. When the air pressure detection value does not exceed the air pressure reference detection value, it indicates that there is no leak in the area of the gas outlet pipeline. Therefore, the high - pressure inflation volume and the high - pressure duration are matched from the inflation database according to the manufacturing specifications. The inflation database also stores the actual inflation volume and the pressure - maintaining time corresponding to different manufacturing specifications under high - pressure conditions, which will not be elaborated here. In this embodiment, the high - pressure is set to 25KPa.

[0130] Step S205: Control the inflation device to inflate the gas outlet pipeline and the gas inlet pipeline preset on the gas self - closing valve based on the high - pressure inflation volume. When the inflation is completed, control the inflation device to maintain the pressure of the gas self - closing valve for the high - pressure duration, and obtain the inlet pressure detection value of the gas inlet pipeline.

[0131] The inlet pressure detection value refers to the pressure value of the leakage generated in the area of the gas inlet pipeline of the gas self - closing valve. By controlling the inflation device to inflate the gas outlet pipeline and the gas inlet pipeline and maintaining the pressure of the gas self - closing valve for the high - pressure duration, and then detecting the difference between the pressure value corresponding to the gas outlet pipeline and the high - pressure value by the pressure sensor as the inlet pressure detection value.

[0132] Step S206: Update the air pressure detection value of the gas outlet pipeline according to the inlet pressure detection value.

[0133] While the pressure sensor detects the inlet pressure detection value, re - detect the air pressure detection value of the gas outlet pipeline.

[0134] Step S207: Based on the intake pressure detection value and / or the updated air pressure detection value exceeding the preset high-pressure reference detection value, output the preset abnormal guidance information.

[0135] The abnormal guidance information is the prompt information set by the technician to prompt the operator that the gas self-closing valve leaks under high pressure. The high-pressure reference detection value is the reference pressure deviation value set by the technician to detect whether the gas self-closing valve leaks under high pressure. When the intake pressure detection value exceeds the high-pressure reference detection value, the updated air pressure detection value exceeds the high-pressure reference detection value, or both the intake pressure detection value and the updated air pressure detection value exceed the high-pressure reference detection value, it indicates that the gas self-closing valve has a leakage situation, so the abnormal guidance information is output.

[0136] Refer to Figure 4 , the preset airtightness detection method further includes:

[0137] Step S300: When both the intake pressure detection value and the updated air pressure detection value do not exceed the preset high-pressure reference detection value, retrieve the valve cap position based on the manufacturing specifications.

[0138] The valve cap position refers to the position where the valve cap 2 is provided on the gas self-closing valve. When both the intake pressure detection value and the updated air pressure detection value do not exceed the high-pressure reference detection value, it indicates that the gas self-closing valve does not have a leakage, so the valve cap position is retrieved from the manufacturing specifications.

[0139] Step S301: Control the external leakage detection device preset on the detection device to move to the valve cap position and obtain the abutting air pressure detection information of the valve cap 2.

[0140] The abutting air pressure detection information refers to the pressure value corresponding to when the external leakage detection device abuts against the valve cap 2. By controlling the external leakage detection device to move to the valve cap position, the parameter detected by the pressure sensor preset on the external leakage detection device is used as the abutting air pressure detection information.

[0141] Step S302: Determine whether the abutting air pressure detection information is 0.

[0142] By determining whether the abutting air pressure detection information is 0, it is possible to determine whether the valve flap 5 is damaged or there is a leakage at the installation position of the valve flap 5.

[0143] Step S303: If the abutting air pressure detection information is not 0, output the preset abnormal position information.

[0144] The abnormal position information is the prompt information set by the technician to prompt the operator that the valve flap 5 is damaged or there is a leakage at the installation position of the valve flap 5. When the abutting air pressure detection information is not 0, it indicates that the valve flap 5 is damaged or there is a leakage at the installation position of the valve flap 5, so the abnormal position information is output to prompt the operator.

[0145] Step S304: When the abutting air pressure detection information is 0, determine the external leakage inflation volume and the external leakage pressure holding time based on the manufacturing specifications.

[0146] The external leakage inflation volume refers to the inflation volume corresponding to detecting the deformation ability of the valve flap 5, and the external leakage pressure holding time refers to the time for holding the pressure of the gas self-closing valve after inflation with the external leakage inflation volume. When the abutting air pressure detection information is 0, it indicates that the probability of the valve flap 5 being damaged or the installation position of the valve flap 5 leaking is low. Therefore, the external leakage inflation volume and the external leakage pressure holding time are matched from the inflation database according to the manufacturing specifications. In this embodiment, the air pressure value corresponding to the external leakage inflation volume is set to 40 KPa.

[0147] Step S306: Control the detection inflation device preset on the external leakage detection device to inflate the valve cap 2 based on the external leakage inflation volume, and when the inflation is completed, control the detection inflation device to hold the pressure of the gas self-closing valve for the external leakage pressure holding time, and update the intake pressure detection value and the air pressure detection value.

[0148] The detection inflation device refers to a device provided on the external leakage detection device and used to inflate the valve cap 2 to detect the airtightness of the gas self-closing valve. By controlling the detection inflation device to inflate the valve cap 2 with the external leakage inflation volume and hold the pressure of the gas self-closing valve for the external leakage pressure holding time, and re-obtain the intake pressure detection value and the air pressure detection value.

[0149] Step S307: When the updated intake pressure detection value and / or the air pressure detection value exceeds the preset reference external leakage detection value, output the preset abnormal position information.

[0150] When the updated intake pressure detection value exceeds the reference external leakage detection value, the air pressure detection value exceeds the reference external leakage detection value, or both the updated intake pressure detection value and the air pressure detection value exceed the reference external leakage detection value, it indicates that the valve flap 5 is not easily restored after deformation to cause gas flow. Therefore, output the preset abnormal guidance information.

[0151] The method before outputting the preset abnormal position information further includes:

[0152] Step S400: When the abutting air pressure detection information is not 0, control the external leakage detection device to lift by a preset lifting distance and obtain the valve cap image information of the valve cap 2.

[0153] The lifting distance is the distance set by the technician for controlling the external leakage detection device to lift to facilitate taking the image of the valve cap 2. The valve cap image information refers to the image corresponding to the valve cap 2, which is obtained by photographing the valve cap 2 with a camera preset on the detection device.

[0154] Step S401: If the valve cap image information contains a preset foreign object feature, determine the foreign object position based on the valve cap image information and the foreign object feature.

[0155] The foreign object feature refers to the color feature corresponding to foreign objects such as dust and adhesives, which is formed by being preset and stored by the operator. When the valve cap image information contains the foreign object feature, it indicates that there are foreign objects affecting the air pressure detection of the external leakage detection device. Therefore, based on the valve cap image information, the position of the foreign object feature is boxed as the foreign object position.

[0156] Step S402: Retrieve the valve cap installation range according to the manufacturing specifications.

[0157] The valve cap installation range refers to the range corresponding to the shape of the valve cap 2. By retrieving the shape dimensions of the valve cap 2 from the manufacturing specifications and taking the range included in the shape dimensions as the valve cap installation range.

[0158] Step S403: If the foreign object position falls within the valve cap installation range, determine the foreign object area based on the valve cap image information and the foreign object feature.

[0159] The foreign object area refers to the area corresponding to the foreign object. When the foreign object position does not fall within the valve cap installation range, continue to output the abnormal position information. When the foreign object position falls within the valve cap installation range, it indicates that there is a situation where when the external leakage detection device abuts against the valve cap 2, gas flow is achieved by pressing the valve cap 2 by abutting against the foreign object. Therefore, by boxing the contour of the range corresponding to the foreign object feature from the valve cap image information and calculating the estimated area of the contour of this range as the foreign object area.

[0160] Step S404: Match the blowing power from a preset blowing database based on the foreign object area, and control a preset blowing device to blow the foreign object position with the blowing power and update the valve cap image information.

[0161] The blowing power refers to the power for blowing the foreign object, and the blowing power is matched from a preset blowing database based on the foreign object area. Different blowing powers corresponding to different foreign object areas are stored in the blowing database. The blowing database is a database set by humans and will not be elaborated here. By controlling the blowing device preset on the detection device to blow the foreign object position with the blowing power to blow away the foreign object. The blowing device can be a device composed of a pipeline and a fan.

[0162] Step S405: If there is a foreign object feature in the updated valve cap image information, retrieve the valve cap shape corresponding to the foreign object position based on the manufacturing specifications.

[0163] When there is a foreign object feature in the updated valve cap image information, it indicates that the blowing device has not blown away the foreign object. Therefore, by retrieving the dimensions of the valve cap 2 corresponding to the foreign object position from the manufacturing specifications and combining the retrieved shape to obtain the valve cap shape.

[0164] Step S406: Determine the foreign object removal path according to the valve cap shape, and control a preset foreign object removal device to run along the foreign object removal path.

[0165] The foreign object removal device refers to a robotic arm provided with a scraper for removing foreign objects. The foreign object removal path refers to the path for removing foreign objects on the valve cap shape, and the foreign object removal path is matched from a preset foreign object removal database through the valve cap shape. The foreign object removal database stores the foreign object removal paths corresponding to different valve cap shapes and different specifications of scrapers. The foreign object removal database is a database set by humans and will not be elaborated here. By controlling the foreign object removal device to run along the foreign object removal path, the foreign objects on the valve cap 2 are removed.

[0166] The method after updating the intake air pressure detection value and the air pressure detection value further includes:

[0167] Step S500: Obtain the contact image information of the contact part between the external leakage detection device and the valve cap 2.

[0168] The contact image information refers to the image corresponding to the contact part on the detection inflation device that contacts the valve cap 2, and is obtained by photographing the contact part on the detection inflation device that contacts the valve cap 2 through a camera. In this embodiment, the contact part between the detection inflation device and the valve cap 2 is generally made of rubber material.

[0169] Step S501: When the contact image information contains a preset crack feature, determine the crack shape according to the contact image information and the crack feature.

[0170] The crack feature refers to the shape feature corresponding to the existence of a crack in the contact part between the detection inflation device and the valve cap 2. The crack feature is set in advance by those skilled in the art and will not be elaborated here. When the contact image information contains the crack feature, it indicates that there is air leakage when the external leakage detection device maintains pressure. Therefore, the shape corresponding to the crack feature is framed out from the contact image information as the crack shape.

[0171] Step S502: Determine the estimated crack length and the estimated average crack width based on the crack shape.

[0172] The estimated crack length refers to the estimated length that the crack extends, and the estimated average crack width refers to the average width corresponding to the crack. The different widths at each position point are retrieved from the crack shape, and the average value of all widths is calculated as the estimated average crack width. Then, the total length of the lines formed by connecting the center points of each width is used as the estimated crack length.

[0173] Step S503: Obtain the usage time of the external leakage detection device and the contact force corresponding to the usage time.

[0174] The usage time refers to the time taken to detect the inflation device. By marking the time point when the detection inflation device starts to press and inflate the valve cap 2, and then marking the time point when the external leakage detection device is lifted, the time parameter value between the two time points is calculated as the single - use time value. The usage time is obtained by retrieving the number of single - use time values from the system and calculating the product of the number and the single - use time value. The abutting force refers to the force with which the external leakage detection device abuts against the valve cap 2 to press the valve cap 2, which is obtained by the operator pre - inputting it into the system.

[0175] Step S504: Calculate the difference between the usage time and the preset reference usage time and use it as the time deviation parameter.

[0176] The reference usage time refers to the maximum usage time of the abutting part between the external leakage detection device and the valve cap 2, which is set in advance by those skilled in the art and will not be elaborated here. The time deviation parameter refers to the deviation value between the usage time and the reference usage time. By calculating the difference between the usage time and the reference usage time, the difference value is used as the time deviation parameter. The time deviation parameter can be negative.

[0177] Step S505: Determine the estimated crack depth based on the time deviation parameter, the estimated crack length, and the abutting force.

[0178] The estimated crack depth refers to the estimated depth corresponding to the crack. The estimated crack depth is matched from the preset crack database through the time deviation parameter, the estimated crack length, and the abutting force. The crack database contains the corresponding relationship between the time deviation parameter, the estimated crack length, the abutting force, and the estimated crack depth. The crack database is a database set by humans and will not be elaborated here.

[0179] Step S506: Calculate the estimated leakage parameter according to the estimated crack length, the estimated average crack width, the estimated crack depth, and the abutting air pressure detection information.

[0180] The estimated leakage parameter is calculated through the estimated crack length, the estimated average crack width, the estimated crack depth, and the abutting air pressure detection information. The calculation method of the estimated leakage parameter includes: Q = (b×h3×△P) / (K×μ×L), where Q is the estimated leakage parameter, b is the estimated average crack width, h is the estimated crack depth, △P is the deviation value between the preset standard atmospheric pressure and the abutting air pressure detection information, K is the experimental coefficient preset by the operator, μ is the gas dynamic viscosity of the inflation gas of the inflation device and the detection inflation device preset by the operator, and L is the estimated crack length. In this embodiment, K is set to 12.

[0181] Step S507: Calculate the difference between the updated air pressure detection value and the reference external leakage detection value and use it as the external leakage deviation value.

[0182] The external leakage deviation value refers to the deviation value between the updated air pressure detection value and the reference external leakage detection value. By calculating the difference between the updated air pressure detection value and the reference external leakage detection value, and taking the difference as the external leakage deviation value.

[0183] Step S508: When the estimated leakage parameter is consistent with the external leakage deviation value, repair the detection inflation device through a preset repair method based on the estimated crack length, the estimated average crack width, and the estimated crack depth.

[0184] When the estimated leakage parameter is inconsistent with the external leakage deviation value, it indicates that while the external leakage detection device is leaking, the gas self-closing valve is also leaking. Therefore, continue to output the abnormal position information. When the estimated leakage parameter is consistent with the external leakage deviation value, it indicates that only the external leakage detection device is leaking. Therefore, repair the detection inflation device through a preset repair method based on the estimated crack length, the estimated average crack width, and the estimated crack depth, so as to continue the airtightness detection of the current batch of gas self-closing valves. The specific repair method refers to steps S600 to S710.

[0185] Step S509: When the detection of the gas self-closing valve is completed, output the preset device replacement information.

[0186] The device replacement information is the information set by the technician to prompt the operator to replace the external leakage detection device. When the airtightness detection of the current batch of gas self-closing valves is completed, control the detection device to output the device replacement information.

[0187] The preset repair method includes:

[0188] Step S600: Calculate the estimated crack volume based on the estimated crack length, the estimated average crack width, and the estimated crack depth.

[0189] The estimated crack volume refers to the estimated volume corresponding to the crack. By calculating the product value of the estimated crack length, the estimated average crack width, and the estimated crack depth as the estimated crack volume.

[0190] Step S601: Determine the total repair amount based on the estimated crack volume.

[0191] The total repair amount refers to the total amount required for the repair liquid to repair a crack. The total repair amount is matched from the preset repair database through the estimated crack volume. The repair database contains the corresponding relationship between the estimated crack volume and the total repair amount. The repair database is a database set by humans and will not be elaborated here. The type of the repair liquid is matched according to the material of the part abutted on the external leakage detection device and will not be elaborated here.

[0192] Step S602: Determine the repair path corresponding to the estimated crack length based on the abutting image information.

[0193] The repair path refers to the path corresponding to the crack that the repair device is used to repair. The straight line corresponding to the estimated length of the crack is identified from the abutting image information as the repair path.

[0194] Step S603: Based on the repair path and the preset total repair amount, control the repair device to repair the external leakage detection device, and when the repair device is repairing, obtain the tray specification.

[0195] The repair device refers to the device used to inject the repair liquid into the crack. The repair device is controlled to repair the external leakage detection device through the repair path and the total repair amount. The tray specification refers to the specification of the tray used to collect the dripping repair liquid. When the repair device is repairing, the tray specification is retrieved after being pre-input into the system by the operator.

[0196] Step S604: Determine the reference collection range according to the tray specification.

[0197] The reference collection range refers to the maximum range that the tray can collect the repair liquid. The contour dimensions of the tray are retrieved from the tray specification, and the contour dimensions are combined to obtain the reference collection range. In this embodiment, the reference collection range is at most the same size as the part that abuts the external leakage detection device.

[0198] Step S605: Determine the maximum collection quantity of the crack during repair according to the abutting image information and the reference collection range.

[0199] The maximum collection quantity refers to the maximum quantity of dripping repair liquid that can be collected within the reference collection range. Each crack is framed out from the abutting image information, and based on the estimated length of each crack, the reference collection range is expanded left and right. The expansion direction containing the most complete cracks is used as the reference direction, and the number of cracks within the reference collection range corresponding to this reference direction is used as the maximum collection quantity. In this embodiment, each reference collection range does not contain duplicate cracks.

[0200] Step S606: Determine the collection center point based on the reference collection range corresponding to each maximum collection quantity.

[0201] The collection center point refers to the center point of the reference collection range, and the center point of the shape corresponding to the reference collection range is used as the collection center point.

[0202] Step S607: Determine the maximum collection time according to the maximum collection quantity and the total repair amount of each crack corresponding to the collection center point.

[0203] The maximum collection time refers to the maximum time for the tray to collect the dripping repair liquid at a collection center point. The maximum collection time is matched from a preset repair database based on the maximum collection quantity and the total repair quantity of each crack corresponding to the collection center point. The repair database contains the corresponding relationship between the maximum collection quantity, the total repair quantity of each crack, and the maximum collection time. The repair database is a database set by humans and will not be elaborated here. In this embodiment, the repair device repairs the cracks in descending order of the total repair quantity, so the time difference for each crack to complete repair within the reference collection range can be reduced.

[0204] Step S608: Determine the priority repair path based on the maximum collection quantity, and control the repair device to repair along the priority repair path. Control the preset tray device to move to the collection center point corresponding to the priority repair path and stay for the maximum collection time, and regard the path where the repair is completed as the repaired path.

[0205] The priority repair path refers to the path for preferentially repairing cracks. The reference collection range corresponding to the maximum collection quantity with the largest value is used, and the repair path corresponding to the largest total repair quantity within this reference collection range is used as the priority repair path. By controlling the repair device to repair along the priority repair path, control the preset tray device to move to the collection center point corresponding to the priority repair path and collect the repair liquid on the priority repair path for the maximum collection time. The repaired path refers to the repair path corresponding to the cracks that have been completed. By regarding the path where the repair is completed as the repaired path. When the repair device repairs the priority repair path, all repair paths within the reference collection range corresponding to the priority repair path need to be completed.

[0206] Step S609: Update the collection center point and the maximum collection time according to the repaired path and the remaining repair paths until all paths on the butting image information are repaired paths.

[0207] When the repair device completes the repair of all repair paths within the reference collection range corresponding to the priority repair path, reselect the maximum collection time and the collection center point from the cracks corresponding to the remaining repair paths, and control the repair device and the tray device to operate until all paths on the butting image information are repaired paths.

[0208] The preset repair method further includes:

[0209] Step S700: Obtain the butting specification of the part where the external leakage detection device butts against the valve cap 2.

[0210] The butting specification refers to the dimensional specification of the part where the external leakage detection device butts against the valve cap 2. By scanning the barcode on the external leakage detection device, the dimensional specification of the part where the external leakage detection device butts against the valve cap 2 is obtained as the butting specification.

[0211] Step S701: Determine the actual total repair amount and the total solidification time based on the estimated crack length, the estimated average crack width, and the estimated crack depth.

[0212] The actual total repair amount refers to the actual total amount of repair liquid required to repair a crack, and the total solidification time refers to the total time required for the repair liquid of the actual total repair amount to solidify. Calculate the volume through the estimated crack length, the estimated average crack width, and the estimated crack depth, and match the actual total repair amount and the total solidification time corresponding to the actual total repair amount from the repair database through this volume. The repair database contains the corresponding relationships among the volume of the crack, the actual total repair amount, and the total solidification time, which will not be elaborated here.

[0213] Step S702: Determine the annular repair cover according to the abutment specification.

[0214] The annular repair cover refers to an annular cover covering the part where the external leakage detection device abuts. Match the corresponding annular repair cover from the preset annular cover database according to the abutment specification. Different models of annular repair covers corresponding to different abutment specifications are stored in the annular cover database. The annular cover database is a database set by humans and will not be elaborated here.

[0215] Step S703: Based on the crack shape, retrieve the position corresponding to the maximum width in the estimated crack length as the starting repair position, and determine the number of repairs based on the starting repair position.

[0216] The starting repair position refers to the position where the repair device starts to repair the crack. Retrieve the position corresponding to the maximum width in the estimated crack length from the crack shape as the starting repair position.

[0217] Step S704: Update the annular repair cover according to the starting repair position and the injection specification of the preset repair device.

[0218] The injection specification is the dimension specification corresponding to the top of the repair device used by the technician to inject the repair liquid. Punch holes in the annular repair cover according to the injection specification for the starting repair position to obtain a new annular repair cover.

[0219] Step S705: Based on the starting repair position, control the clamping device to cover the updated annular repair cover on the detection inflation device, and control the repair device to repair the starting repair position based on the actual total repair amount and the number of repairs.

[0220] Control the clamping device to cover the updated annular repair cover on the detection inflation device, and make the holes on the annular repair cover correspond to the starting repair position one by one. Then control the repair device corresponding to the number of repairs to repair the starting repair position with the actual total repair amount corresponding to the crack.

[0221] Step S706: Determine the maximum residence time based on the total solidification time of each crack.

[0222] The maximum residence time refers to the maximum time that the annular repair cover needs to stay. By arranging the total solidification times of each crack from largest to smallest, and selecting the largest total solidification time as the maximum residence time according to the arrangement result.

[0223] Step S707: Determine the airbag inflation volume based on the abutment specification, and when all repair devices have completed the injection of the repair liquid, output the airbag inflation volume to the airbag device preset in the annular repair cover.

[0224] The airbag device refers to the airbags arranged on the annular repair cover facing the external leakage detection device, and multiple airbag devices are provided. The airbag inflation volume refers to the amount of gas used to inflate the airbag. The airbag inflation volume is matched from the preset inflation database according to the abutment specification. The inflation database stores the airbag inflation volumes corresponding to different abutment specifications. The inflation database is a database set by humans and will not be elaborated here. When all repair devices have completed the injection of the repair liquid, output the airbag inflation volume to the airbag device so that the airbag device abuts against the external leakage detection device to facilitate the repair of the crack by the repair liquid.

[0225] Step S708: When the abutment time of the annular repair cover reaches the maximum residence time, determine the deflation volume based on the abutment specification and the airbag inflation volume and output it to the airbag device, and control the clamping device to remove the annular repair cover.

[0226] The deflation volume refers to the inflation volume of the airbag corresponding to facilitating the detachment of the annular repair cover. When the abutment time of the annular repair cover reaches the maximum residence time, the deflation volume is matched from the inflation database according to the abutment specification and the airbag inflation volume. The inflation database stores the deflation volumes corresponding to different abutment specifications and airbag inflation volumes. The inflation database is a database set by humans and will not be elaborated here. By outputting the deflation volume to the airbag device, the airbag device expands to separate the annular repair cover from the external leakage detection device, and control the clamping device to remove the annular repair cover, so that the annular repair cover can be removed conveniently while repairing the crack.

[0227] Based on the same inventive concept, an embodiment of the present invention provides a gas self-closing valve airtightness detection system, including:

[0228] An acquisition module, configured to acquire image detection information, air pressure detection value, inlet air pressure detection value, image detection information, abutment air pressure detection information, usage time, abutment force, and abutment specification.

[0229] A memory, configured to store a program for a gas self-closing valve airtightness detection method.

[0230] A processor for loading, executing, and implementing a program stored in a memory.

[0231] Based on the same inventive concept, an embodiment of the present invention provides a gas self - closing valve airtightness detection device, including a memory and a processor. A computer program capable of being loaded and executed by the processor to implement a gas self - closing valve airtightness detection method is stored on the memory.

[0232] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the above - mentioned division of each functional module is used as an example. In actual applications, the above - mentioned 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 herein.

[0233] The above - mentioned is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above - mentioned embodiments. All technical solutions falling within the inventive concept of the present invention belong to the protection scope of the present invention. It should be pointed out 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 method for detecting the airtightness of a gas self-closing valve, characterized in that, include: Obtaining image detection information of the gas self-closing valve at a preset position to be tested; An image corresponding to a preset gas self-closing valve feature is selected based on the image detection information, and the selected image is used as an image to be clamped; Determine the manufacturing specifications and shape of the gas self-closing valve to be clamped according to the image to be clamped; Determine the clamping shape according to manufacturing specifications; Determine the clamping position according to the shape to be clamped and the clamping shape, and control the preset clamping device to clamp the gas self-closing valve to the preset detection position based on the clamping position; Acquiring trigger information at the detection position; When the trigger information is consistent with the preset start information, the preset clamping device is controlled to clamp the gas self-closing valve, and the preset detection device is controlled to detect the gas self-closing valve based on the preset air tightness detection method; The detection device outputs preset abnormal information, defines the gas self-closing valve on the clamping device as an abnormal state, and clamps it to a preset placement area; The preset airtightness detection methods include: Determine actual inflation volume and hold time based on manufacturing specifications; Based on the actual inflation volume, the inflation device preset on the clamping device is controlled to inflate the gas outlet pipeline, and when the inflation is completed, the inflation device is controlled to maintain the pressure of the gas self-closing valve for the pressure maintaining time, and the gas pressure detection value of the gas outlet pipeline is obtained; Determine whether the air pressure detection value exceeds a preset air pressure reference detection value; If the air pressure detection value exceeds the preset air pressure reference detection value, the preset abnormal leakage information is output to the detection device based on the air outlet pipeline; If the air pressure detection value does not exceed the preset air pressure reference detection value, the high pressure inflation amount and the high pressure duration are determined based on the manufacturing specifications; Based on the high-pressure inflation amount, the inflation device is controlled to inflate the outlet pipe and the inlet pipe preset on the gas self-closing valve. When the inflation is completed, the inflation device is controlled to maintain the pressure of the gas self-closing valve with a high-pressure duration, and the inlet pressure detection value of the inlet pipe is obtained; Update the air pressure detection value of the air outlet pipeline according to the air intake pressure detection value; Outputting preset abnormal guidance information based on the intake pressure detection value and / or the updated air pressure detection value exceeding a preset high pressure reference detection value; The gas self-closing valve is provided with a valve cap (2), and the preset air tightness detection method also includes: When the intake pressure detection value and the updated air pressure detection value do not exceed the preset high pressure reference detection value, the valve cap position is retrieved based on the manufacturing specification; Controlling the external leakage detection device preset on the detection device to move to the valve cap position, and obtaining the abutment air pressure detection information of the valve cap (2); Determine whether the contact air pressure detection information is 0; If the contact air pressure detection information is not 0, the preset abnormal position information is output; If the contact air pressure detection information is 0, the leakage inflation volume and leakage pressure holding time are determined based on the manufacturing specifications; Based on the leakage inflation amount, a detection inflation device preset on the leakage detection device is controlled to inflate the valve cap (2), and when the inflation is completed, the detection inflation device is controlled to maintain the pressure of the gas self-closing valve for the leakage pressure maintaining time, and the intake pressure detection value and the gas pressure detection value are updated; When the updated intake pressure detection value and / or the air pressure detection value exceeds the preset reference leakage detection value, outputting preset abnormal position information; The method after updating the intake air pressure detection value and the air pressure detection value further includes: Obtaining the abutting image information of the abutting part between the external leakage detection device and the valve cap (2); When the abutting image information contains a preset crack feature, determining the crack shape according to the abutting image information and the crack feature; Based on the crack shape, determining the estimated crack length and the estimated average crack width; Obtaining the usage time of the external leakage detection device and the abutting force corresponding to the usage time; Calculating the difference between the usage time and the preset reference usage time and using it as the time deviation parameter; Based on the time deviation parameter, the estimated crack length, and the abutting force, determining the estimated crack depth; Calculating the estimated leakage parameter according to the estimated crack length, the estimated average crack width, the estimated crack depth, and the abutting air pressure detection information; Calculating the difference between the updated air pressure detection value and the reference external leakage detection value and using it as the external leakage deviation value; When the estimated leakage parameter is consistent with the external leakage deviation value, repairing the detection inflation device through a preset repair method based on the estimated crack length, the estimated average crack width, and the estimated crack depth; When the gas self-closing valve completes the detection, outputting the preset device replacement information; The preset repair method includes: Calculating the estimated crack volume according to the estimated crack length, the estimated average crack width, and the estimated crack depth; Determining the total repair amount according to the estimated crack volume; Based on the abutting image information, determining the repair path corresponding to the estimated crack length; Based on the repair path and the total repair amount, controlling a preset repair device to repair the external leakage detection device, and when the repair device is repairing, obtaining the tray specification; Determining the reference collection range according to the tray specification; Determining the maximum collection quantity of the crack during repair according to the abutting image information and the reference collection range; Based on the reference collection ranges corresponding to each maximum collection quantity, determining the collection center point; Determining the maximum collection time according to the maximum collection quantity and the total repair amount of each crack corresponding to the collection center point; Based on the maximum collection quantity, determining the priority repair path, controlling the repair device to repair along the priority repair path, controlling the preset tray device to move to the collection center point corresponding to the priority repair path and stay for the maximum collection time, and taking the completed repair path as the repaired path; Updating the collection center point and the maximum collection time according to the repaired path and the remaining repair path until all paths on the abutting image information are repaired paths.

2. A gas self-closing valve airtightness detection method according to claim 1, characterized in that, The method before outputting the preset abnormal position information further includes: When the abutting air pressure detection information is not 0, controlling the external leakage detection device to lift a preset lifting distance and obtaining the valve cap image information of the valve cap (2); When the valve cap image information contains a preset foreign object feature, determining the foreign object position according to the valve cap image information and the foreign object feature; Retrieving the valve cap installation range according to the manufacturing specification; When the foreign object position falls within the valve cap installation range, determining the foreign object area according to the valve cap image information and the foreign object feature; Matching the blowing power from a preset blowing database based on the foreign object area, and controlling a preset blowing device to blow the foreign object position with the blowing power and updating the valve cap image information; When there are foreign object features in the updated valve cap image information, retrieve the valve cap shape corresponding to the foreign object position based on the manufacturing specifications; Determine the foreign object removal path according to the valve cap shape, and control a preset foreign object removal device to operate along the foreign object removal path.

3. A gas self - closing valve airtightness detection method according to claim 1, characterized in that, The preset repair method further includes: Obtain the contact specifications of the contact part between the external leakage detection device and the valve cap (2); Determine the actual total repair amount and the total solidification time according to the estimated crack length, the estimated average crack width, and the estimated crack depth; Determine the annular repair cover according to the contact specifications; Based on the crack shape, retrieve the position corresponding to the maximum width in the estimated crack length as the starting repair position, and determine the number of repairs based on the starting repair position; Update the annular repair cover according to the starting repair position and the injection specifications of the preset repair device; Based on the starting repair position, control the clamping device to cover the updated annular repair cover on the detection inflation device, and control the repair device to repair the starting repair position based on the actual total repair amount and the number of repairs; Determine the maximum residence time based on the total solidification time of each crack; Determine the airbag inflation volume according to the contact specifications, and when all the repair devices have completed the injection of the repair liquid, output the airbag inflation volume to the airbag device preset in the annular repair cover; When the contact time of the annular repair cover reaches the maximum residence time, determine the deflation volume and output it to the airbag device according to the contact specifications and the airbag inflation volume, and control the clamping device to remove the annular repair cover.

4. A gas self-closing valve airtightness detection method according to claim 1, characterized in that, The calculation method for estimating the leakage parameters includes: Q = (b × h 3 × ΔP) / (K × μ × L), Q is the estimated leakage parameter, b is the estimated average crack width, h is the estimated crack depth, △P is the deviation value between the preset standard atmospheric pressure and the contact air pressure detection information, K is an experimental coefficient preset by the operator, μ is the gas dynamic viscosity of the gas used for inflation by the preset inflation device and the detection inflation device, and L is the estimated crack length.

5. A gas self-closing valve airtightness detection system, characterized in that, It includes: An acquisition module for acquiring image detection information, air pressure detection values, intake pressure detection values, contact air pressure detection information, usage time, contact force, and contact specifications; A memory for storing the program of a gas self-closing valve airtightness detection method according to any one of claims 1 to 4; A processor for loading and executing the program stored in the memory.

6. A gas self - closing valve airtightness detection device, characterized in that, It includes a memory and a processor, and a computer program capable of being loaded and executed by the processor is stored on the memory, which is a gas self-closing valve airtightness detection method according to any one of claims 1 to 4.

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