Ball valve detection method and ball valve

Abstract

The invention relates to a ball valve detection method and a ball valve, and relates to the field of ball valve leakage detection.The ball valve detection method comprises the steps that detection image information of a preset detection area is obtained; determining a left inflation position and a right inflation position according to the detection image information and preset interface features; a preset inflation device is controlled to inflate the left inflation position according to a preset left inflation air pressure value, and after inflation, the left air pressure value of the ball valve is obtained; based on the condition that the left side air pressure value is inconsistent with the left side inflation air pressure value, reporting a left side air leakage prompt; an inflation device is controlled to inflate the right inflation position according to the right inflation air pressure value, and after inflation, the right air pressure value of the ball valve is obtained; reporting a right side air leakage prompt based on the condition that the right side air pressure value is inconsistent with the right side inflation air pressure value; based on the condition that the left side air pressure value is consistent with the left side inflation air pressure value and the right side air pressure value is consistent with the right side inflation air pressure value, air leakage detection is completed. The method has the effect of improving the working efficiency.

Description

Technical Field

[0001] The invention relates to the field of ball valve leakage detection, in particular to a ball valve detection method and a ball valve. Background Art

[0002] A ball valve is a valve whose opening and closing part is a sphere. The sphere is driven by the valve stem and rotates around the axis to achieve opening and closing.

[0003] The sealing performance of the ball valve needs to be tested before leaving the factory. In the prior art, the sealing performance of the ball valve is generally judged by filling the ball valve with gas at a certain pressure and then observing whether leakage occurs within a period of time.

[0004] However, when the above method is used for detection, once a gas leak occurs, the staff cannot find the leak location in time, thereby reducing work efficiency, which needs to be improved. Summary of the invention

[0005] In order to improve work efficiency, the present invention provides a ball valve detection method and a ball valve.

[0006] In a first aspect, the present invention provides a method for detecting a ball valve, which adopts the following technical solution: A method for detecting a ball valve, comprising: Obtaining detection image information of a preset detection area; Determine the left inflation position and the right inflation position according to the detected image information and the preset interface features; Controlling a preset inflation device to inflate the left inflation position with a preset left inflation pressure value, and obtaining the left air pressure value of the ball valve after inflation; Based on the inconsistency between the left air pressure value and the left inflation pressure value, a left air leakage prompt is reported; Controlling the inflation device to inflate the right inflation position with a preset right inflation pressure value, and obtaining the right air pressure value of the ball valve after inflation; Based on the inconsistency between the right side air pressure value and the right side inflation pressure value, a right side air leakage prompt is reported; Based on the fact that the left air pressure value is consistent with the left inflation air pressure value, and the right air pressure value is also consistent with the right inflation air pressure value, the air leakage detection is completed.

[0007] By adopting the above technical solution, first obtain the detection image information of the detection area, thereby determining the inflation position on the left and right sides of the ball valve, and prepare for the subsequent inflation detection. Then control the inflation device to inflate the corresponding positions according to the preset air pressure value, and obtain the air pressure value after inflation. By comparing the actual air pressure value with the inflation pressure value, it is determined whether there is a leak. If there is any inconsistency, report the leakage prompt on the corresponding side in time. If the air pressure values ​​on both sides are consistent with their respective inflation pressure values, it means that the leakage detection is completed. Such a set of processes can detect the leakage situation and leakage position of the ball valve more accurately and orderly, thereby improving work efficiency.

[0008] Optionally, it also includes the opening and closing leakage detection method: Based on the fact that the air pressure value on the left side is consistent with the air pressure value on the left side, and the air pressure value on the right side is also consistent with the air pressure value on the right side, a preset valve stem assembly is controlled to rotate the ball preset in the ball valve at a preset rotation speed to connect the left and right sides, and during the rotation, the rotation duration and the internal air pressure value of the ball valve are obtained; Determine the combined air pressure value according to the rotation time, the right air pressure value and the left air pressure value; Based on the situation that the internal air pressure value is lower than the combined air pressure value, obtain the ball valve model information; Determine the ball valve size based on the ball valve model information; Determine the leak location based on the rotation time, ball valve size and preset rotation speed; Determine the problematic spring area based on the ball valve model information and leakage location, and provide reporting prompts based on the problematic spring area.

[0009] By adopting the above technical solution, after completing the conventional air pressure detection on both sides and finding no air leakage, the valve stem assembly is further controlled to drive the ball to rotate and connect the left and right sides, and the rotation time and internal air pressure value are obtained at the same time, and the combined air pressure value is determined accordingly. When the internal air pressure value is lower than the combined air pressure value, the size of the ball valve is determined by obtaining the ball valve model information, and the air leakage position is accurately locked in combination with the rotation time, ball valve size and rotation speed, and then the problem spring area is determined and reported to improve the detection accuracy.

[0010] Optionally, also include a spring calibration method: When the valve stem assembly rotates the ball, a real-time resistance value of the valve stem assembly is obtained; Matching the rotation current value from a preset current database according to the real-time resistance value, the preset reference resistance value and the reference rotation duration; According to the rotation current value, the spring force value is matched from a preset elastic force database; Based on the situation that the spring force value does not fall into the preset reference force range, a repair method is matched from a preset repair database according to the spring force value; The preset repairing device is controlled to repair the extrusion spring using a repairing method.

[0011] By adopting the above technical solution, by understanding the real-time resistance value, the reference resistance value and the reference rotation time, the rotation current value is determined from the current database, and then the spring elastic force value is obtained from the elastic force database. When the spring elastic force value is not within the reference elastic force range, a repair method is matched from the repair database, and the repair device repairs the extrusion spring accordingly, thereby increasing the service life of the extrusion spring.

[0012] Optional repair methods include: Based on the situation that the spring force value does not fall within the reference elastic force range, controlling the preset disassembly device to disassemble the ball valve, and determining whether the spring force value exceeds the reference elastic force range; Based on the situation that the spring force value exceeds the reference force interval, the difference between the spring force value and the maximum value of the reference force interval is calculated as the excess difference value; Matching a trimming length value from a preset repair database according to the excess difference value and preset spring reference parameters; Controlling a preset shearing device to trim the extrusion spring according to a trimming length value; Based on the situation that the spring force value does not exceed the reference spring force interval, the difference between the spring force value and the minimum value of the reference spring force interval is calculated as the spring force missing value; Match the repair height value from the repair database according to the elastic force missing value and the spring reference parameter; The preset repair device is controlled to weld a preset thickening gasket corresponding to the repair height value to the bottom of the extrusion spring to perform elastic force repair on the extrusion spring.

[0013] By adopting the above technical solution, when the spring force value is not within the reference force range, the disassembly device is first used to disassemble the ball valve and further determine whether it exceeds the range. If it exceeds, the difference value is obtained by calculating the difference, and then the trimming length value is matched with the spring reference parameter, and the spring is trimmed by the shearing device to adjust the elastic force; if it does not exceed, the elastic force missing value is calculated, and the repair height value is determined in combination with the spring reference parameter, and then the repair device is controlled to weld the corresponding thickened gasket to the bottom of the spring to repair the elastic force. In this way, the corresponding repair measures can be accurately taken for different situations of abnormal spring elastic force, effectively restore the normal elastic force of the spring, and increase the service life of the spring.

[0014] Optionally, also include the spring arrangement method: Obtain assembly image information of the ball valve; Matching the assembly progress from a preset assembly database according to the assembly image information; Based on the fact that the assembly progress is consistent with the preset spring installation progress, controlling the preset clamping device to clamp the extrusion spring into the preset elastic force detection device, and obtaining device image information; Matching the spring number from a preset number database according to the device image information and the preset device model information; Controlling the elastic force detection device to obtain the elastic force detection value according to the spring number; According to the elastic force test value, a spring number arrangement method is matched from a preset arrangement database; The control clamping device arranges the extrusion springs in a spring number arrangement method.

[0015] By adopting the above technical solution, the assembly image information of the ball valve is first obtained, and the assembly progress is determined from the assembly database. When the progress is consistent with the spring installation progress, the extrusion spring is sent to the elastic force detection device by using the clamping device, and then the spring number is matched according to the device image information and the device model information. According to this number, the detection device is controlled to obtain the elastic force detection value, and then the corresponding spring number arrangement method is found from the arrangement database according to the value. Finally, the clamping device is controlled to arrange the extrusion spring according to this method, so as to improve the assembly quality.

[0016] Optionally, a correction method for correcting the arrangement of spring numbers is also included: Determine the overall elastic force value based on the elastic force test value and spring number; Based on the situation that the overall elastic force value does not fall into the preset overall elastic force range, determining the elastic force difference value according to the overall elastic force value and the overall elastic force range; Determine the replaced spring number and the replacement spring force value according to the elastic force difference value and the elastic force detection value; Determine the replacement spring number based on the replacement elastic force value; Control the clamping device to exchange the replaced spring number with the extrusion spring corresponding to the replaced spring number; After the extrusion spring is exchanged, the arrangement method after the exchange is matched from the arrangement database according to the elastic force detection value and the replacement elastic force value; Control the clamping device to arrange the extrusion springs in a rear-end arrangement method.

[0017] By adopting the above technical solution, the overall elastic force value is first determined based on the elastic force detection value and the spring number. When the overall elastic force value is not within the overall elastic force range, the elastic force difference value is calculated, and then the replaced spring number and the replacement elastic force value are determined, thereby clarifying the replacement spring number. Then the clamping device is controlled to exchange the corresponding extrusion spring. After the exchange is completed, the post-exchange arrangement method is matched from the arrangement database according to the new elastic force detection value and the replacement elastic force value, and finally the clamping device is controlled to arrange the extrusion spring according to the post-exchange arrangement method. Such a set of correction methods can make timely adjustments and optimizations when the spring number arrangement does not meet the overall elastic force requirements, ensure the rationality of the extrusion spring arrangement, and thus ensure the stability and reliability of the overall performance of the ball valve.

[0018] Optionally, a spring replacement method is also included: After the extrusion springs are arranged, a central pressing device preset on the elastic force detection device is controlled to press the extrusion spring with a preset pressing force value, so that a closed air chamber is formed in the elastic force detection device; After pressing, the preset inflation device is controlled to inflate the closed air chamber in the elastic force detection device, and inflation image information is obtained; Based on the fact that the inflation image information contains a preset air leakage feature, the abnormal spring number is determined according to the inflation image information, the air leakage feature and the spring number arrangement sequence; Acquire the abnormal elastic force value of the extrusion spring corresponding to the abnormal spring number and the adjacent detection values ​​of the extrusion springs adjacent to the abnormal spring number; Determine the reference elastic force value according to the abnormal elastic force value and the adjacent detection values; Determine the required spring number based on the reference elastic force value; The clamping device is controlled to exchange the extrusion springs corresponding to the abnormal spring number and the required spring number.

[0019] By adopting the above technical solution, after the extrusion springs are arranged, the central pressing device is used to press at a preset force to form a closed air chamber, and then the air is inflated and the inflation image information is obtained. When the inflation image information shows leakage characteristics, the abnormal spring number is accurately locked based on the information, the leakage characteristics and the spring number arrangement order, and then its abnormal elastic force value and the adjacent detection value of the adjacent spring are obtained. The reference elastic force value is determined by the two, and the required spring number is determined. Finally, the clamping device is controlled to exchange the extrusion spring corresponding to the abnormal spring number and the required spring number. Such an operation process can effectively troubleshoot and solve spring-related abnormalities through reasonable analysis and exchange of springs when a spring leakage problem is detected, thereby improving the production quality of ball valves.

[0020] In a second aspect, the present invention provides a ball valve, which is tested by using a ball valve testing method according to the first aspect, and comprises a valve body, a ball installed in the valve body, a valve seat assembly installed in the valve body and used to seal the ball, and a valve stem assembly installed in the ball and used to drive the ball to rotate to achieve on-off; The valve body is provided with a valve body inner cavity for installing the ball and the valve seat assembly, the valve seat assembly is installed on both sides of the ball, the valve seat assembly includes a sealing ring that is tightly abutted against the ball and the inner wall of the valve body inner cavity to achieve sealing, and an extrusion spring for driving the sealing ring to be pressed against the ball and the inner wall of the valve body inner cavity to achieve extrusion sealing, and the valve body is also provided with a placement ring hole for placing the extrusion spring, one end of the extrusion spring is installed in the placement ring hole, and the other end is abutted against the sealing ring.

[0021] By adopting the above technical solution, the inner cavity of the valve body provided inside the valve body provides installation space for the ball and the valve seat assembly. The valve seat assembly is located on both sides of the ball, wherein the sealing ring can closely cooperate with the ball to achieve a sealing effect, and the extrusion spring plays a key role in extruding and sealing the sealing ring. One end of the spring is placed in the placement ring hole of the valve body, and the other end abuts against the sealing ring, thereby enabling the sealing ring to abut against the ball stably. Such a structural layout not only ensures a close and orderly cooperation relationship between the various components, but also enables the ball valve to have good sealing performance, thereby improving the sealing performance of the ball valve.

[0022] Optionally, the valve stem assembly includes a stuffing box, a driving rod installed in the stuffing box and used to drive the ball to rotate, and a sealing ring installed in the stuffing box and used to seal the stuffing box. A stuffing groove is provided in the stuffing box for the driving rod to pass through and connect to the ball. The sealing ring is arranged around the outer ring of the driving rod, one side of the sealing ring abuts against the driving rod, and the other side abuts against the inner wall of the stuffing groove.

[0023] By adopting the above technical solution, the stuffing box provides space for the drive rod to connect the ball, so that the ball can be stably driven to rotate and the ball valve can be opened and closed. The sealing ring surrounds the outer ring of the drive rod, effectively sealing the stuffing box to prevent the medium from entering and exiting, and ensuring the sealing and stability of the valve.

[0024] Optionally, the sealing ring is arranged in multiple layers, and a barrier ring for preventing the sealing ring material from escaping is arranged between each layer of the sealing ring.

[0025] By adopting the above technical solution, the sealing ring is set to be multi-layered, which can enhance the sealing effect. The barrier ring added between each layer of sealing ring can effectively prevent the possibility of sealing ring material escaping, so that the sealing ring always maintains a stable state during use, further ensuring the sealing of the valve stem assembly, ensuring that the ball valve can operate reliably, and reducing the probability of leakage and other problems caused by the escaping of sealing ring material.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. First, obtain the detection image information of the detection area to determine the left and right inflation positions of the ball valve, and prepare for the subsequent inflation detection. Then control the inflation device to inflate the corresponding positions according to the preset air pressure value, and obtain the air pressure value after inflation. By comparing the actual air pressure value with the inflation pressure value, determine whether there is a leak. If there is any inconsistency, report the leakage prompt on the corresponding side in time. If the air pressure values ​​on both sides are consistent with their respective inflation pressure values, it means that the leakage detection is completed. Such a set of processes can detect the leakage situation and leakage position of the ball valve more accurately and orderly, thereby improving work efficiency; 2. First, determine the overall elastic force value based on the elastic force detection value and the spring number. When the overall elastic force value is not within the overall elastic force range, calculate the elastic force difference value, and then determine the replaced spring number and the replacement elastic force value, thereby clarifying the replacement spring number. Then control the clamping device to exchange the corresponding extrusion spring. After the exchange is completed, match the post-replacement arrangement method from the arrangement database based on the new elastic force detection value and the replacement elastic force value, and finally control the clamping device to arrange the extrusion spring according to the post-replacement arrangement method. Such a set of correction methods can make timely adjustments and optimizations when the spring number arrangement does not meet the overall elastic force requirements, ensure the rationality of the extrusion spring arrangement, and thus ensure the stability and reliability of the overall performance of the ball valve; 3. Setting the sealing ring to multiple layers can enhance the sealing effect. The additional barrier ring between each layer of sealing ring can effectively prevent the possibility of sealing ring material escaping, so that the sealing ring always maintains a stable state during use, further ensuring the sealing of the valve stem assembly, ensuring that the ball valve can operate reliably, and reducing the probability of leakage caused by the escaping of sealing ring material. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an overall schematic diagram of a ball valve in an embodiment of the present invention; Figure 2 is a partial cross-sectional view of a ball valve in an embodiment of the present invention; Figure 3 Embodiment of the present invention Figure 2 A partial enlarged view of the middle A part; Figure 4 Embodiment of the present invention Figure 2 A partial enlarged view of the middle B part; Figure 5 is a method flow chart of a ball valve detection method in an embodiment of the present invention; Figure 6 is a method flow chart of the opening and closing air leakage detection method in an embodiment of the present invention; Figure 7 It is a method flow chart of the spring calibration method in an embodiment of the present invention.

[0028] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Valve body; 11. Valve body inner cavity; 12. Placement ring hole; 2. Ball; 21. Clamping groove; 3. Valve seat assembly; 31. Sealing ring; 32. Extrusion spring; 4. Valve stem assembly; 41. Stuffing box; 411. Stuffing groove; 42. Drive rod; 43. Sealing ring; 5. Actuator; 6. Barrier ring. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] Reference Figure 1 , Figure 2 , Figure 3 as well as Figure 4 , comprising a valve body 1, a ball 2 installed in the valve body 1, a valve seat assembly 3 installed in the valve body 1 and used to seal the ball 2, a valve stem assembly 4 installed on the ball 2 and used to drive the ball 2 to rotate to achieve on-off, and an actuator 5 for driving the valve stem assembly 4. The valve body 1 is provided with a valve body inner cavity 11 for installing the ball 2 and the valve seat assembly 3, the valve seat assembly 3 is symmetrically installed on both sides of the ball 2, and the ball 2 is also provided with a clamping groove 21 for the valve stem assembly 4 to be rotatably inserted, and the valve stem assembly 4 is rotatably inserted into the clamping groove 21 to drive the ball 2 to achieve on-off.

[0031] Reference Figure 1 , Figure 2 as well as Figure 3 , the valve seat assembly 3 includes a sealing ring 31 and an extrusion spring 32. The sealing ring 31 is installed between the ball 2 and the inner wall of the inner cavity 11 of the valve body. One end of the sealing ring 31 is tightly in contact with the ball 2, and the other end is in contact with the extrusion spring 32. The side of the sealing ring 31 away from the valve body 1 is tightly in contact with the inner wall of the inner cavity 11 of the valve body, so as to achieve the sealing of the ball valve. A placement ring hole 12 is also provided in the valve body 1, and a plurality of extrusion springs 32 are circumferentially installed in the placement ring hole 12. One end of the extrusion spring 32 is installed in the placement ring hole 12, and the other end is in contact with the sealing ring 31, so as to drive the sealing ring 31 to press against the ball 2 and the inner wall of the inner cavity 11 of the valve body to achieve extrusion sealing.

[0032] Reference Figure 2 and Figure 4The valve stem assembly 4 includes a stuffing box 41, a driving rod 42 installed in the stuffing box 41 and used to drive the ball 2 to rotate, and a sealing ring 43 installed in the stuffing box 41 and used to seal the stuffing box 41.

[0033] A stuffing groove 411 is provided in the stuffing box 41 for the driving rod 42 to pass through and connect to the ball 2. One end of the driving rod 42 is rotatably inserted into the clamping groove 21, and the other end is connected to the actuator 5. The actuator 5 provides power for the rotation of the valve stem assembly 4 to drive the ball 2 to rotate.

[0034] The sealing ring 43 is arranged around the outer ring of the driving rod 42, one side of the sealing ring 43 abuts against the driving rod 42, and the other side abuts against the inner wall of the filling groove 411, and the sealing ring 43 is provided with multiple layers, and a barrier ring 6 is arranged between each layer of the sealing ring 43 to prevent the material of the sealing ring 43 from escaping.

[0035] Reference Figure 5 Based on the same inventive concept, an embodiment of the present invention provides a method for detecting a ball valve, comprising the following steps: Step 100: Acquire detection image information of a preset detection area.

[0036] The detection area refers to the area used to detect the sealing performance of the ball valve. The detection area is set in advance by a person skilled in the art and will not be described in detail here. The detection image information refers to the image of the ball valve included in the detection area. The detection image information is obtained by taking a photo with a camera.

[0037] Step 101: Determine the left inflation position and the right inflation position according to the detected image information and the preset interface features.

[0038] Interface features refer to the features of the interfaces on both sides of the ball valve for connecting to external pipes. The interface features are set in advance by those skilled in the art and will not be described in detail here. The left inflation position is the interface position where the left side of the ball valve is connected to the external pipe. The right inflation position is the interface position where the right side of the ball valve is connected to the external pipe. The interface features in the detection image information can be identified by a preset image recognition library to identify the left inflation position and the right inflation position. The image recognition library stores the correspondence between the detection image information, interface features, the left inflation position, and the right inflation position. The image recognition library is an artificially set database and will not be described in detail here.

[0039] Step 102: Control the preset inflation device to inflate the left inflation position with a preset left inflation pressure value, and after inflation, obtain the left pressure value of the ball valve.

[0040] The inflation device refers to a device used to inflate the ball valve for sealing performance testing. The left inflation pressure value refers to the pressure value required to inflate the left side of the ball valve when the inflation device inflates the left side of the ball valve for testing. The left inflation pressure value is set in advance by a person skilled in the art and will not be described in detail here. The left air pressure value refers to the air pressure value inside the left inflation position after the inflation device inflates the left inflation position. The left air pressure value is measured and obtained by the air pressure sensor.

[0041] The inflation device is controlled to inflate the left inflation position with the left inflation pressure value, and after inflation, the left pressure value of the ball valve is obtained for subsequent detection.

[0042] Step 103: Based on the inconsistency between the left air pressure value and the left inflation pressure value, a left air leakage prompt is reported.

[0043] The left side leakage warning indicates that there is a leakage at the part where the left side of the ball valve is connected to the external pipeline. When the left side air pressure value is inconsistent with the left side inflation pressure value, it means that there is a leakage at the part where the left side of the ball valve is connected to the external pipeline, and the left side leakage warning needs to be reported.

[0044] Step 104: Control the inflation device to inflate the right inflation position with a preset right inflation pressure value, and after inflation, obtain the right air pressure value of the ball valve.

[0045] The right side inflation pressure value refers to the pressure value required to inflate when the inflation device inflates the right side of the ball valve for testing. The right side inflation pressure value is set in advance by a person skilled in the art and will not be described in detail here. The right side pressure value refers to the pressure value inside the right side inflation position after the inflation device inflates the right side inflation position. The right side pressure value is measured and obtained by the pressure sensor.

[0046] Step 105: Based on the inconsistency between the right air pressure value and the right inflation air pressure value, a right air leakage prompt is reported.

[0047] The right side leakage prompt refers to the prompt that there is a leakage at the part where the right side of the ball valve is connected to the external pipeline. When the right side air pressure value is inconsistent with the right side inflation pressure value, it means that there is a leakage at the part where the right side of the ball valve is connected to the external pipeline, and the right side leakage prompt needs to be reported.

[0048] Step 106: Based on the fact that the left air pressure value is consistent with the left inflation air pressure value, and the right air pressure value is also consistent with the right inflation air pressure value, the air leakage detection is completed.

[0049] When the air pressure value on the left side is consistent with the inflation pressure value on the left side, and the air pressure value on the right side is also consistent with the inflation pressure value on the right side, it means that there is no leakage on both sides of the ball valve, and the leakage detection is completed.

[0050] Reference Figure 6, the opening and closing leakage detection method includes the following steps: Step 200: Based on the fact that the left-side air pressure value is consistent with the left-side inflation pressure value, and the right-side air pressure value is also consistent with the right-side inflation pressure value, control the preset valve stem assembly 4 to rotate the ball 2 preset in the ball valve at a preset rotation speed to connect the left and right sides, and during the rotation, obtain the rotation duration and the internal air pressure value of the ball valve.

[0051] The valve stem assembly 4 refers to a component used to drive the ball 2 to rotate to connect the left and right sides. The ball 2 refers to an object used to control the flow and cutoff of a medium (liquid, gas, etc.). The rotation speed refers to the speed at which the valve stem assembly 4 drives the ball 2 to rotate. The rotation speed is set in advance by a person skilled in the art and is not described here. The rotation duration refers to the duration for which the valve stem assembly 4 rotates the ball 2. The internal air pressure value refers to the air pressure value inside the ball valve after the ball 2 rotates to connect the left and right sides. The rotation duration is obtained by a preset electronic timer. When the valve stem assembly 4 starts to rotate the ball 2, the electronic timer starts timing. The internal air pressure value is measured and obtained by an air pressure sensor.

[0052] When the left air pressure value is consistent with the left inflation pressure value, and the right air pressure value is also consistent with the right inflation pressure value, it means that there is no leakage on both sides of the ball valve. The valve stem assembly 4 can be controlled to rotate the ball 2 in the ball valve, and during rotation, the rotation time and the internal air pressure value of the ball valve can be obtained for subsequent steps.

[0053] Step 201: Determine a combined air pressure value according to the rotation duration, the right air pressure value, and the left air pressure value.

[0054] The combined air pressure value refers to the air pressure value that should be reached after the air pressure on the left and right sides touch. The preset air pressure database can match the combined air pressure value corresponding to the rotation duration, the right air pressure value, and the left air pressure value. It contains the corresponding relationship between the rotation duration, the right air pressure value, the left air pressure value, and the combined air pressure value. The air pressure database is a manually set database and will not be elaborated here.

[0055] Step 202: Based on the situation that the internal air pressure value is lower than the combined air pressure value, obtain the ball valve model information.

[0056] The ball valve model information refers to the model of the ball valve currently being tested. The ball valve model information can be obtained by scanning the QR code on the ball valve with a preset scanner. The content obtained by scanning the QR code on the ball valve with the scanner corresponds to the ball valve model information. When the internal air pressure value is lower than the combined air pressure value, it means that the combined air pressure when the air pressures on both sides are combined is abnormal, which further indicates that the ball valve has leaked after the ball 2 rotates. The ball valve model information needs to be obtained for subsequent steps.

[0057] Step 203: Determine the size of the ball valve according to the ball valve model information.

[0058] The ball valve size refers to the size used when the ball valve is manufactured and installed. The ball valve size corresponding to the ball valve model information can be queried through the preset size database, which contains the correspondence between the ball valve model information and the ball valve size. The size database is a manually set database and will not be described in detail here.

[0059] Step 204: Determine the leaking position according to the rotation time, the ball valve size and the preset rotation speed.

[0060] The rotation speed refers to the speed at which the valve stem assembly 4 rotates relative to the ball 2. The rotation speed is set in advance by a person skilled in the art and will not be described in detail here. The leakage position refers to the position where the leakage occurs in the ball valve. The leakage position corresponding to the rotation time, ball valve size and rotation speed can be matched through the preset leakage database, which includes the corresponding relationship between the rotation time, ball valve size, rotation speed and leakage position. The leakage database is a manually set database and will not be described in detail here.

[0061] Step 205: Determine the problematic spring area according to the ball valve model information and the leakage position, and provide a report based on the problematic spring area.

[0062] The problem spring area refers to the area where the extrusion spring 32 in the ball valve is abnormal. The extrusion spring 32 refers to the spring used to achieve extrusion sealing for the ball valve. In the present embodiment, a plurality of extrusion springs 32 are provided. The problem spring area corresponding to the ball valve model information and the leakage position can be matched through the preset ball valve database, which includes the correspondence between the ball valve model information and the leakage position and the problem spring area. The ball valve database is a manually set database and will not be described in detail here. Based on the problem spring area, a reporting prompt is provided to prompt the staff to handle the extrusion spring 32 in the problem spring area.

[0063] Reference Figure 7 , the spring verification method includes the following steps: Step 300: When the valve stem assembly 4 rotates the ball 2, a real-time resistance value of the valve stem assembly 4 is obtained.

[0064] The real-time resistance value refers to the resistance value encountered by the valve stem assembly 4 when rotating the ball 2. The real-time resistance value is measured and obtained by the resistance sensor. When the valve stem assembly 4 rotates the ball 2, the real-time resistance value of the valve stem assembly 4 needs to be obtained for subsequent steps.

[0065] Step 301: Match the rotation current value from a preset current database according to the real-time resistance value, the preset reference resistance value and the reference rotation duration.

[0066] The reference resistance value refers to the value that the resistance encountered by the valve stem assembly 4 when rotating the ball 2 should reach. The reference rotation time refers to the time that the valve stem assembly 4 should reach when completing the rotation of the ball 2. The reference resistance value and the reference rotation time are both set in advance by those skilled in the art and will not be elaborated here. The rotation current value refers to the current value used when the preset rotating motor drives the valve stem assembly 4 to rotate the ball 2. The rotating motor refers to the motor used to drive the valve stem assembly 4 to rotate the ball 2. The rotation current value corresponding to the real-time resistance value, the reference resistance value and the reference rotation time can be matched through the current database, which includes the corresponding relationship between the real-time resistance value, the reference resistance value, the reference rotation time and the rotation current value. The current database is an artificially set database and will not be elaborated here.

[0067] Step 302: matching a spring force value from a preset elastic force database according to the rotation current value.

[0068] The spring force value refers to the magnitude of the force applied by the extrusion spring 32 to the object in contact with it when it is deformed. The spring force value corresponding to the rotation current value can be matched through the elastic force database, which includes the corresponding relationship between the rotation current value and the spring force value. The elastic force database is a manually set database and will not be described in detail here.

[0069] Step 303: Based on the situation that the spring force value does not fall into the preset reference force interval, a repair method is matched from a preset repair database according to the spring force value.

[0070] The reference elastic force interval refers to the interval within which the elastic force value of the extrusion spring 32 should fall. The reference elastic force interval is set in advance by a person skilled in the art and will not be described in detail here. The repair method refers to a method for repairing an extrusion spring 32 with an abnormal spring elastic force value. The specific repair method is described in detail in subsequent steps 400 to 406 and will not be described in detail here. The repair method corresponding to the spring elastic force value can be matched through the repair database, which includes the corresponding relationship between the spring elastic force value and the repair method. The repair database is an artificially set database and will not be described in detail here.

[0071] When the spring force value does not fall within the reference force range, it indicates that the spring force value of the extrusion spring 32 is abnormal, and a repair method needs to be matched for subsequent steps.

[0072] Step 304: Control a preset repairing device to repair the extrusion spring 32 using a repairing method.

[0073] The repair device is a device for repairing the extrusion spring 32 with abnormal spring force value. The repair device is controlled to repair the extrusion spring 32 using a repair method.

[0074] The repair method includes the following steps: Step 400: Based on the situation that the spring elastic force value does not fall within the reference elastic force range, control a preset disassembly device to disassemble the ball valve, and determine whether the spring elastic force value exceeds the reference elastic force range.

[0075] The clamping device refers to a device used to clamp the ball valve to the repair area. The disassembling device refers to a device used to disassemble the ball valve. When the spring force value does not fall within the reference force range, it means that the force value of the extrusion spring 32 is abnormal, and the disassembling device needs to be controlled to disassemble the ball valve. After disassembly, by judging whether the spring force value exceeds the reference force range, it is known whether the force value of the extrusion spring 32 is too large or too small.

[0076] Step 401: Based on the situation that the spring force value exceeds the reference spring force interval, the difference between the spring force value and the maximum value of the reference spring force interval is calculated as the excess difference value.

[0077] The excess difference value refers to the spring force value exceeding the maximum value of the reference elastic force interval. The excess difference value is obtained by calculating the difference between the spring force value and the maximum value of the reference elastic force interval. When the spring force value exceeds the reference elastic force interval, it means that the spring force value is greater than the maximum value of the reference elastic force interval, which further means that the elastic force value of the extrusion spring 32 is too large, and the excess difference value needs to be calculated for subsequent steps.

[0078] Step 402: Match the trimming length value from a preset repair database according to the excess difference value and the preset spring reference parameter.

[0079] The spring reference parameters refer to the wire diameter, outer diameter, inner diameter, pitch, effective number of turns, number of support coils, total number of windings, free height, length, spiral direction and spring winding ratio of the extrusion spring 32. The spring reference parameters are set in advance by those skilled in the art and will not be described in detail here. The trimming length value refers to the length value of the spring that is trimmed when the elastic force value of the extrusion spring 32 is reduced by trimming it. The trimming length value corresponding to the excess difference value and the spring reference parameter can be matched by repairing the database, which includes the correspondence between the excess difference value and the spring reference parameter and the trimming length value. The repair database is a manually set database and will not be described in detail here.

[0080] Step 403: Control a preset shearing device to trim the extrusion spring 32 according to the trimming length value.

[0081] The shearing device is a device for trimming the extrusion spring 32. The repair device includes the shearing device. The shearing device is controlled to trim the extrusion spring 32 at a trimming length value, thereby reducing the elastic force value of the extrusion spring 32.

[0082] Step 404: Based on the fact that the spring force value does not exceed the reference spring force interval, a difference between the spring force value and the minimum value of the reference spring force interval is calculated as a spring force missing value.

[0083] The elasticity missing value refers to the elasticity value of the spring force value being lower than the minimum value of the reference elasticity range. The elasticity missing value can be obtained by calculating the difference between the spring force value and the minimum value of the reference elasticity range.

[0084] When the spring force value does not exceed the reference elastic force range, it means that the spring force value is lower than the minimum value of the reference elastic force range, which further indicates that the spring force value is too small and the elastic force missing value needs to be calculated for subsequent steps.

[0085] Step 405: Match the repair height value from the repair database according to the elastic force missing value and the spring reference parameter.

[0086] The repair height value refers to the height increased by increasing the height of the squeeze spring 32 to increase its elasticity value. The repair height value corresponding to the elasticity missing value and the spring reference parameter can be matched through the repair database, which includes the corresponding relationship between the elasticity missing value, the spring reference parameter and the repair height value.

[0087] Step 406 : Control the preset repair device to weld a preset thickened gasket corresponding to the repair height value to the bottom of the extrusion spring 32 to perform elastic repair on the extrusion spring 32 .

[0088] The repair device refers to a device for increasing the height of the extrusion spring 32 to increase the elastic force of the extrusion spring 32. The thickening gasket refers to a gasket for increasing the height of the extrusion spring 32 to increase the elastic force of the extrusion spring 32. The repair device includes the repair device. The repair device is controlled to weld a thickening gasket consistent with the repair height value to one end of the extrusion spring 32, thereby increasing the elastic force value of the extrusion spring 32, and then completing the repair operation of the extrusion spring 32.

[0089] The spring arrangement method includes the following steps: Step 500: Acquire assembly image information of the ball valve.

[0090] The assembly image information refers to the image of the ball valve during assembly. The assembly image information is obtained by taking a picture with a camera.

[0091] Step 501: Matching the assembly progress from a preset assembly database according to the assembly image information.

[0092] The assembly progress refers to the degree of completion of the ball valve during the assembly process. The assembly progress corresponding to the assembly image information can be matched through the assembly database, which contains the corresponding relationship between the assembly image information and the assembly progress. The assembly database is a manually set database and will not be described here.

[0093] Step 502: Based on the fact that the assembly progress is consistent with the preset spring installation progress, control the preset clamping device to clamp the extrusion spring 32 into the preset elastic force detection device, and obtain device image information.

[0094] The spring installation progress refers to the progress of the ball valve assembly process when the next step is to install the extrusion spring 32. The spring installation progress is set in advance by a person skilled in the art and will not be described in detail here. The clamping device refers to a device used to clamp the extrusion spring 32 into the elastic force detection device. The elastic force detection device refers to a device used to detect the elastic force of the extrusion spring 32. The device image information refers to the image after the extrusion spring 32 is placed in the elastic force detection device. The device image information is obtained by taking a photo with a camera.

[0095] When the assembly progress is consistent with the spring installation progress, it means that during the assembly process of the ball valve, the next step is to install the extrusion spring 32. It is necessary to first control the clamping device to clamp the extrusion spring 32 into the elastic force detection device and obtain the device image information for subsequent steps.

[0096] Step 503: Match the spring number from a preset number database according to the device image information and the preset device model information.

[0097] The device model information refers to the model of the elastic force detection device. By understanding the model of the elastic force detection device, the position of the extrusion spring 32 when placed in the elastic force detection device can be known. The device model information is set in advance by a person skilled in the art and will not be described in detail here. The spring number refers to the number of the extrusion spring 32. Since all the extrusion springs 32 required for a single ball valve can be detected simultaneously in the elastic force detection device, a different number needs to be set for each extrusion spring 32 for subsequent steps. The spring number corresponding to the device image information and the device model information can be matched through the numbering database, which includes the correspondence between the device image information, the device model information and the spring number. The numbering database is an artificially set database and will not be described in detail here.

[0098] Step 504: Control the elastic force detection device to obtain the elastic force detection value according to the spring number.

[0099] The elastic force detection value refers to the elastic force value of the extrusion spring 32 during elastic force detection. Since the elastic force detection device detects the elastic force of all the extrusion springs 32 at the same time, the elastic force detection device is provided with an elastic force sensor having a number corresponding to the spring number of the extrusion spring 32 at the position where each extrusion spring 32 is placed, and the elastic force detection value of the extrusion spring 32 corresponding to the spring number can be obtained through the corresponding elastic force sensor.

[0100] The elastic force detection device is controlled to detect the elastic force of the extrusion spring 32 according to the spring number, and the elastic force detection value of the extrusion spring 32 corresponding to the spring number is obtained for subsequent steps.

[0101] Step 505: matching a spring number arrangement method from a preset arrangement database according to the elastic force detection value.

[0102] The spring number arrangement method refers to the arrangement method of the extrusion spring 32 when it is placed in the ball valve after the elastic force test is completed. The spring number arrangement method corresponding to the elastic force test value can be matched through the arrangement database, which contains the corresponding relationship between the elastic force test value and the spring number arrangement method. The arrangement database is a manually set database and will not be described in detail here.

[0103] Example to illustrate the arrangement of spring numbers: If there are three squeeze springs 32, the three squeeze springs 32 are numbered A, B, and C, respectively, wherein the elastic force detection value of spring A is 1 N, and the elastic force detection values ​​of springs B and C are 2 N. Arranging in the order of BAC can provide a graded buffering effect, so the arrangement method of the three squeeze springs 32 A, B, and C is the order of BAC.

[0104] Step 506: Control the clamping device to arrange the extrusion springs 32 according to the spring numbering method.

[0105] The control clamping device places the extrusion spring 32 into the ball valve and arranges it according to the spring number arrangement method, thereby completing the assembly of this step.

[0106] Also included is a correction method for correcting the way the spring numbers are arranged: Step 600: Determine the overall elastic force value according to the elastic force detection value and the spring number.

[0107] The overall elastic force value refers to the elastic force value of all the extrusion springs 32 when integrated. Since the spring numbers are sequentially numbered, the maximum value of the spring number is the number of springs. And since the extrusion springs 32 are placed in parallel. If the elastic force values ​​of the extrusion springs 32 are the same, the formula F 整 =F 弹 *X calculates the overall elastic force value, where F 整 is the overall elastic force value, F 弹 is the elastic force detection value, and X is the number of the extrusion springs 32 corresponding to the spring number.

[0108] If the elastic force values ​​of the extrusion springs 32 are different, it is necessary to calculate the elastic force values ​​of the extrusion springs 32 by the formula F 整 =F 1 +F 2 +……+F nIt is calculated that, among which, F 整 is the overall elastic force value, F 1 、F 2 and F n They are all elastic force detection values ​​of the extrusion spring 32 corresponding to different spring numbers. n is the maximum value of the spring number.

[0109] Step 601: Based on the situation that the overall elastic force value does not fall into the preset overall elastic force range, determine the elastic force difference value according to the overall elastic force value and the overall elastic force range.

[0110] The overall elastic force interval refers to the interval value that the overall elastic force value should reach. The overall elastic force interval is set in advance by a person skilled in the art and will not be elaborated here. The elastic force difference value refers to the elastic force difference when the overall elastic force value does not fall within the overall elastic force interval. The elastic force difference value can be obtained by calculating the difference between the overall elastic force value and the overall elastic force interval. If the overall elastic force value is greater than the maximum value of the overall elastic force interval, the difference between the overall elastic force value and the maximum value of the overall elastic force interval is calculated as the elastic force difference value. If the overall elastic force value is less than the minimum value of the overall elastic force interval, the difference between the overall elastic force value and the minimum value of the overall elastic force interval is calculated as the elastic force difference value.

[0111] Step 602: Determine the replaced spring number and the replacement spring value according to the spring force difference value and the spring force detection value.

[0112] The replaced spring number refers to the spring number corresponding to the replaced extrusion spring 32 when the extrusion spring 32 on the ball valve needs to be replaced. The replacement elastic force value refers to the elastic force value of the new spring used to replace the extrusion spring 32 determined by the replaced spring number.

[0113] The preset replacement database can be used to match the replaced spring number and replacement elastic force value corresponding to the elastic force difference value and the elastic force detection value. It includes the correspondence between the elastic force difference value, the elastic force detection value, the replaced spring number and the replacement elastic force value. The replacement database is an artificially set database and will not be elaborated here.

[0114] Step 603: Determine the replacement spring number according to the replacement elastic force value.

[0115] The replacement spring number refers to the number of a new spring used to replace the extrusion spring 32 corresponding to the replaced spring number. The replacement spring number corresponding to the replacement elastic force value can be matched through the replacement database, which includes the corresponding relationship between the replacement elastic force value and the replacement spring number.

[0116] Step 604: Control the clamping device to exchange the replaced spring number with the extrusion spring 32 corresponding to the replacement spring number.

[0117] The control clamping device exchanges the replaced spring number with the extrusion spring 32 corresponding to the replaced spring number for subsequent steps.

[0118] Step 605: After the extrusion spring 32 is exchanged, a post-exchange arrangement method is matched from an arrangement database according to the elastic force detection value and the replacement elastic force value.

[0119] The post-replacement arrangement method refers to the new arrangement method of each extrusion spring 32 on the ball valve after the extrusion spring 32 is replaced. The post-replacement arrangement method corresponding to the elastic force detection value and the replacement elastic force value can be matched through the arrangement database, which includes the correspondence between the elastic force detection value and the replacement elastic force value and the post-replacement arrangement method. When the extrusion spring 32 is replaced, the post-replacement arrangement method needs to be matched for subsequent steps.

[0120] Step 605: Control the clamping device to arrange the extrusion springs 32 in a post-replacement arrangement method.

[0121] The clamping device is controlled to rearrange the extrusion spring 32 in a rear-end arrangement method.

[0122] The following steps are also included: Step 700: After the squeezing springs 32 are arranged, a central pressing device preset on the elastic force detection device is controlled to press the squeezing spring 32 with a preset pressing force value, so that a closed air chamber is formed in the elastic force detection device.

[0123] The center pressing device refers to a device that presses the extrusion spring 32 in the elastic force detection device at the center of the circle of the elastic force detection device. The pressing force value refers to the force value of pressing the extrusion spring 32. The pressing force value is set in advance by those skilled in the art and will not be described in detail here.

[0124] After the extrusion springs 32 are arranged, the central pressing device on the elastic force detection device is controlled to press the extrusion spring 32 with a pressing force value, so that a closed air chamber is formed in the elastic force detection device for subsequent steps.

[0125] Step 701: After pressing, control a preset inflation device to inflate the closed air chamber in the elastic force detection device, and obtain inflation image information.

[0126] The inflating device refers to a device for inflating the closed air chamber in the elastic force detection device. The inflating image information refers to the image of the surface of the elastic force detection device after the inflating device inflates the closed air chamber. The inflating image information is obtained by taking a photo with a camera. When pressed, the inflating device is controlled to inflate the closed air chamber in the elastic force detection device, and the inflating image information is obtained so as to detect each compression spring 32.

[0127] Step 702: Based on the fact that the inflation image information contains a preset air leakage feature, the abnormal spring number is determined according to the inflation image information, the air leakage feature and the spring number arrangement sequence.

[0128] The leakage characteristic refers to the characteristic when the elastic force detection device leaks. The leakage characteristic is set in advance by those skilled in the art and will not be described in detail here. The abnormal spring number refers to the number of the compression spring 32 that causes the elastic force detection device to leak.

[0129] When the inflation image information contains leakage characteristics, it means that there is an abnormality in some extrusion springs 32. It is necessary to match the inflation image information, leakage characteristics and the abnormal spring number corresponding to the spring number arrangement order through the preset abnormal database for subsequent steps. The abnormal database contains the correspondence between the inflation image information, leakage characteristics, spring number arrangement order and abnormal spring number. The abnormal database is an artificially set database and will not be elaborated here.

[0130] Step 703: Acquire the abnormal elastic force value of the compression spring 32 corresponding to the abnormal spring number and the adjacent detection values ​​of the compression spring 32 adjacent to the abnormal spring number.

[0131] The abnormal elastic force value refers to the elastic force value of the extrusion spring 32 corresponding to the abnormal spring number. The adjacent detection value refers to the elastic force value of the extrusion spring 32 adjacent to the abnormal spring number. Both the abnormal elastic force value and the adjacent detection value are measured and obtained by the elastic force sensor on the elastic force detection device.

[0132] Step 704: Determine a reference elastic force value according to the abnormal elastic force value and adjacent detection values.

[0133] The reference spring force value refers to the spring force value that a new spring used to replace the compression spring 32 corresponding to the abnormal spring number should have.

[0134] Step 705: Determine the required spring number according to the reference spring force value.

[0135] The required spring number refers to the number of the extrusion spring 32 with the reference elastic force value. The required spring number corresponding to the reference elastic force value can be matched through a preset number database, which includes the corresponding relationship between the reference elastic force value and the required spring number. The number database is a manually set database and will not be described in detail here.

[0136] Step 706: Control the clamping device to exchange the extrusion spring 32 corresponding to the abnormal spring number and the required spring number.

[0137] The control clamping device exchanges the extrusion spring 32 corresponding to the abnormal spring number and the required spring number to avoid air leakage in the closed air chamber, thereby preventing leakage of the ball valve.

[0138] 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 detecting a ball valve, characterized in that: include: Obtaining detection image information of a preset detection area; Determine the left inflation position and the right inflation position according to the detected image information and the preset interface features; Controlling a preset inflation device to inflate the left inflation position with a preset left inflation pressure value, and obtaining the left air pressure value of the ball valve after inflation; Based on the inconsistency between the left air pressure value and the left inflation pressure value, a left air leakage prompt is reported; Controlling the inflation device to inflate the right inflation position with a preset right inflation pressure value, and obtaining the right air pressure value of the ball valve after inflation; Based on the inconsistency between the right side air pressure value and the right side inflation pressure value, a right side air leakage prompt is reported; Based on the fact that the left air pressure value is consistent with the left inflation air pressure value, and the right air pressure value is also consistent with the right inflation air pressure value, the air leakage detection is completed.

2. A ball valve detection method according to claim 1, characterized in that: It also includes the opening and closing leakage detection method: Based on the fact that the air pressure value on the left side is consistent with the air pressure value on the left side when the ball is inflated, and the air pressure value on the right side is also consistent with the air pressure value on the right side when the ball is inflated, a preset valve stem assembly (4) is controlled to rotate a ball (2) preset in the ball valve at a preset rotation speed to connect the left and right sides, and during the rotation, the rotation duration and the internal air pressure value of the ball valve are obtained; Determine the combined air pressure value according to the rotation time, the right air pressure value and the left air pressure value; Based on the situation that the internal air pressure value is lower than the combined air pressure value, obtain the ball valve model information; Determine the ball valve size based on the ball valve model information; Determine the leak location based on the rotation time, ball valve size and preset rotation speed; Determine the problematic spring area based on the ball valve model information and leakage location, and provide reporting prompts based on the problematic spring area.

3. A ball valve detection method according to claim 2, characterized in that: Also includes spring calibration methods: When the valve stem assembly (4) rotates the ball (2), a real-time resistance value of the valve stem assembly (4) is obtained; Matching the rotation current value from a preset current database according to the real-time resistance value, the preset reference resistance value and the reference rotation duration; According to the rotation current value, the spring force value is matched from a preset elastic force database; Based on the situation that the spring force value does not fall into the preset reference force range, a repair method is matched from a preset repair database according to the spring force value; A preset repairing device is controlled to repair the extrusion spring (32) using a repairing method.

4. A ball valve detection method according to claim 3, characterized in that: The fixes include: Based on the situation that the spring force value does not fall within the reference elastic force range, controlling the preset disassembly device to disassemble the ball valve, and determining whether the spring force value exceeds the reference elastic force range; Based on the situation that the spring force value exceeds the reference force interval, the difference between the spring force value and the maximum value of the reference force interval is calculated as the excess difference value; Matching a trimming length value from a preset repair database according to the excess difference value and preset spring reference parameters; Controlling a preset shearing device to trim the extrusion spring (32) according to a trimming length value; Based on the situation that the spring force value does not exceed the reference spring force interval, the difference between the spring force value and the minimum value of the reference spring force interval is calculated as the spring force missing value; Match the repair height value from the repair database according to the elastic force missing value and the spring reference parameter; The preset repair device is controlled to weld a preset thickening gasket corresponding to the repair height value to the bottom of the extrusion spring (32) to perform elastic force repair on the extrusion spring (32).

5. A ball valve detection method according to claim 1, characterized in that: Also includes spring arrangement methods: Obtain assembly image information of the ball valve; Matching the assembly progress from a preset assembly database according to the assembly image information; Based on the fact that the assembly progress is consistent with the preset spring installation progress, controlling the preset clamping device to clamp the extrusion spring (32) into a preset elastic force detection device, and obtaining device image information; Matching the spring number from a preset number database according to the device image information and the preset device model information; Controlling the elastic force detection device to obtain the elastic force detection value according to the spring number; According to the elastic force test value, a spring number arrangement method is matched from a preset arrangement database; The control clamping device arranges the compression springs (32) in a spring number arrangement method.

6. A ball valve detection method according to claim 5, characterized in that: Also included is a correction method for correcting the way the spring numbers are arranged: Determine the overall elastic force value based on the elastic force test value and spring number; Based on the situation that the overall elastic force value does not fall into the preset overall elastic force range, determining the elastic force difference value according to the overall elastic force value and the overall elastic force range; Determine the replaced spring number and the replacement spring force value according to the elastic force difference value and the elastic force detection value; Determine the replacement spring number based on the replacement elastic force value; Controlling the clamping device to exchange the replaced spring number with the extrusion spring (32) corresponding to the replaced spring number; After the extrusion spring (32) is exchanged, a post-exchange arrangement method is matched from an arrangement database according to the elastic force detection value and the replacement elastic force value; The clamping device is controlled to arrange the extrusion spring (32) in a rear-end arrangement method.

7. A ball valve detection method according to claim 5, characterized in that: Also includes spring replacement method: After the squeezing springs (32) are arranged, a central pressing device preset on the elastic force detection device is controlled to press the squeezing spring (32) with a preset pressing force value, so that a closed air chamber is formed in the elastic force detection device; After pressing, the preset inflation device is controlled to inflate the closed air chamber in the elastic force detection device, and inflation image information is obtained; Based on the fact that the inflation image information contains a preset air leakage feature, the abnormal spring number is determined according to the inflation image information, the air leakage feature and the spring number arrangement sequence; Acquiring an abnormal elastic force value of the extrusion spring (32) corresponding to the abnormal spring number and adjacent detection values ​​of the extrusion spring (32) adjacent to the abnormal spring number; Determine the reference elastic force value according to the abnormal elastic force value and the adjacent detection values; Determine the required spring number based on the reference elastic force value; The control clamping device exchanges the extrusion spring (32) corresponding to the abnormal spring number and the required spring number.

8. A ball valve, which is inspected by using the ball valve inspection method according to claim 1, characterized in that: It comprises a valve body (1), a ball (2) installed in the valve body (1), a valve seat assembly (3) installed in the valve body (1) and used to seal the ball (2), and a valve stem assembly (4) installed in the ball (2) and used to drive the ball (2) to rotate to achieve on and off. The valve body (1) is provided with an inner cavity (11) for installing the ball (2) and the valve seat assembly (3), the valve seat assembly (3) is installed on both sides of the ball (2), the valve seat assembly (3) comprises a sealing ring (31) which is in close contact with the inner wall of the ball (2) and the inner cavity (11) of the valve body to achieve sealing, and an extrusion spring (32) which is used to drive the sealing ring (31) to be pressed against the inner wall of the ball (2) and the inner cavity (11) of the valve body to achieve extrusion sealing, and the valve body (1) is also provided with a placement ring hole (12) for placing the extrusion spring (32), one end of the extrusion spring (32) is installed in the placement ring hole (12), and the other end is in contact with the sealing ring (31).

9. A ball valve according to claim 8, characterized in that: The valve stem assembly (4) comprises a stuffing box (41), a driving rod (42) installed in the stuffing box (41) and used to drive the ball (2) to rotate, and a sealing ring (43) installed in the stuffing box (41) and used to seal the stuffing box (41). A stuffing groove (411) is provided in the stuffing box (41) for the driving rod (42) to pass through and connect to the ball (2). The sealing ring (43) is arranged around the outer ring of the driving rod (42), and one side of the sealing ring (43) abuts against the driving rod (42), and the other side abuts against the inner wall of the stuffing groove (411).

10. A ball valve according to claim 9, characterized in that: The sealing ring (43) is provided in multiple layers, and a barrier ring (6) is provided between each layer of the sealing ring (43) to prevent the material of the sealing ring (43) from escaping.

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