Pressure gauge calibrating device and method

Abstract

The invention discloses a pressure gauge calibrating device and method. The device comprises a pressure gauge turnover box driving platform, a pressure gauge calibrating platform and an electric control cabinet. The method comprises the following steps: 1, transferring a to-be-calibrated pressure gauge; 2, identifying and calibrating a to-be-detected unit of the first pressure gauge; 3, identifying and calibrating a to-be-detected unit of the second pressure gauge; 4, identifying and calibrating a to-be-detected unit of the third pressure gauge; 5, spraying codes on the qualified pressure gauges and pasting certificates; and 6, transferring the qualified pressure gauge. Through cooperation of the pressure gauge verification platform and the pressure gauge turnover box driving platform, the requirement for automatic and batch verification is met, the labor intensity of workers is reduced, the verification efficiency is improved, verification of the pressure gauge to be verified is preset, and the verification accuracy is guaranteed; the verification process is effectively combined with the image recognition module, so that the two-dimensional code certificate can be directly printed and output from the verification of the pressure gauge, and the operation convenience is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of instrument calibration, and in particular relates to a pressure gauge calibration device and method. Background Art

[0002] In the current field of instrument calibration, fully autonomous pressure gauge calibration equipment has not yet matured. This is mainly due to the diverse specifications of pressure gauges, such as external dimensions, joint dimensions, and measuring ranges, as well as complex and cumbersome calibration processes and multiple standard calibration methods. The traditional mechanical pressure gauge calibration is performed by the calibrator manually turning the movable nut to fix the pressure gauge to the output port of the pressure source, and then going through the process of segmented pressurization, tapping the case, reading the pointer reading, recording the reading, and unloading the pressure gauge. The operation steps are cumbersome and highly dependent on manual experience, resulting in low pressure gauge calibration efficiency, and the calibration accuracy will also vary depending on the working status and proficiency of the person. This method not only makes the workers have high labor intensity and extremely low calibration efficiency, and cannot meet the needs of batch calibration, but also because the reading and pressure control are both manual operations, the accuracy of the calibration results cannot be guaranteed, and there are certain safety hazards. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a pressure gauge calibration device in view of the deficiencies in the above-mentioned prior art. Through the cooperation of the pressure gauge calibration platform and the pressure gauge turnover box driving platform, the needs of automatic and batch calibration are realized, the labor intensity of workers is reduced, the calibration efficiency is improved, and the calibration of the pressure gauge to be calibrated is pre-set to ensure the accuracy of the calibration; the calibration process is effectively combined with the image recognition module to realize the direct printing and output of the QR code certificate from the pressure gauge calibration, thereby improving the convenience of operation.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a pressure gauge calibration device and method, characterized in that: the method comprises the following steps: It includes a pressure gauge turnover box driving platform, a pressure gauge verification platform arranged on one side of the pressure gauge turnover box driving platform and matched with the pressure gauge turnover box driving platform, and an electric control cabinet arranged on one side of the pressure gauge verification platform and used to control the pressure gauge verification platform and the pressure gauge turnover box driving platform; The pressure gauge turnover box driving platform comprises a rotating driving platform and a plurality of pressure gauge turnover boxes arranged on the rotating driving platform, the rotating driving platform is provided with a driving device, and each of the pressure gauge turnover boxes is provided with a first pressure sensor; The pressure gauge verification platform includes a pressure gauge verification and transfer platform, and a pressure gauge storage and transfer platform, a plurality of pressure gauge to-be-tested units, and a verification qualified identification unit which are sequentially arranged on the pressure gauge verification and transfer platform; A conveyor belt is arranged on the top of the pressure gauge verification conveying platform, and the conveyor belt forms a frame-type structure. A plurality of the pressure gauge units to be inspected and the qualified verification identification units are arranged on the conveyor belt in sequence. The pressure gauge storage turnover platform and the plurality of the pressure gauge units to be inspected are arranged on the same side of the conveyor belt, and the qualified verification identification units are arranged on the other side of the conveyor belt. The pressure gauge storage turntable is arranged on one side of the conveyor belt close to the rotating drive platform, and a first turnover manipulator is arranged on one side of the pressure gauge storage turntable; a second pressure sensor is arranged on the pressure gauge storage turntable, and a temporary storage turntable is arranged on the pressure gauge storage turntable; The plurality of pressure gauge units to be inspected are arranged on the conveyor belt in sequence, and the plurality of pressure gauge units to be inspected are respectively a first pressure gauge unit to be inspected, a second pressure gauge unit to be inspected, and a third pressure gauge unit to be inspected; The qualified identification unit includes a qualified identification box arranged on the conveyor belt, and a first image recognition module and a coding and labeling device both arranged in the qualified identification box; the qualified identification box is a door-shaped structure, and the openings on both sides of the qualified identification box are arranged along the extension direction of the conveyor belt; the first image recognition module is arranged on the side of the qualified identification box away from the rotating drive platform, and the coding and labeling device is arranged on the side of the qualified identification box close to the rotating drive platform.

[0005] The above-mentioned pressure gauge calibration device is characterized in that: the rotating drive platform includes a fixed platform and a rotating frame arranged on the fixed platform and capable of rotating around the fixed platform, and the fixed platform and the rotating frame are rotatably connected; the fixed platform includes a horizontally arranged fixed seat and a supporting fixed frame arranged on the top of the fixed seat, and the fixed seat and the supporting fixed frame are integrally formed; the driving device is arranged on the fixed seat.

[0006] The above-mentioned pressure gauge calibration device is characterized in that: the supporting and fixing frame includes two supporting and fixing rods symmetrically arranged on the top of the fixing seat, the tops of the two supporting and fixing rods intersect, and the tops of the two supporting and fixing rods are connected to a rotating shaft; the rotating frame is arranged on the rotating shaft, and the plurality of pressure gauge turnover boxes are all arranged on the outer edge of the rotating frame, and the plurality of pressure gauge turnover boxes are evenly arranged along the circumference of the rotating frame.

[0007] The above-mentioned pressure gauge calibration device is characterized in that the inspection ranges of the first pressure gauge unit to be inspected, the second pressure gauge unit to be inspected and the third pressure gauge unit to be inspected are different, and the inspection ranges of the first pressure gauge unit to be inspected, the second pressure gauge unit to be inspected and the third pressure gauge unit to be inspected are -0.1MPa~0.1MPa, 0MPa~10MPa, and 10MPa~250MPa respectively.

[0008] The pressure gauge calibration device is characterized in that: the first pressure gauge unit to be inspected and the second pressure gauge unit to be inspected have the same structure, and both the first pressure gauge unit to be inspected and the second pressure gauge unit to be inspected include an inspection box arranged on a conveyor belt, and a second image recognition module and a calibration module both arranged in the inspection box; the second image recognition module is arranged on one side of the inspection box close to the rotating drive platform, and the inspection box includes a pressure gauge inspection area and a pressure gauge calibration failure area; The third pressure gauge inspection unit comprises an inspection box arranged on a conveyor belt, and a verification module arranged in the inspection box; the inspection box comprises a pressure gauge inspection area and a pressure gauge verification failure area.

[0009] The above-mentioned pressure gauge calibration device is characterized in that: the calibration module includes a second turnover manipulator arranged on one side of the box to be inspected, a plurality of calibration components all arranged on one side of the conveyor belt, and a pressure source arranged on the same side of the calibration component and cooperating with the calibration component; The box to be inspected is arranged on one side of the conveyor belt, the verification component and the pressure source are arranged on the other side of the conveyor belt, and the area where the verification component is located is the pressure gauge verification area; The calibration component includes a third image recognition module and a stop valve pressure gauge connector that cooperates with the third image recognition module; the pressure source is connected to the stop valve pressure gauge connector; the pressure sources of the first pressure gauge unit to be inspected, the second pressure gauge unit to be inspected and the third pressure gauge unit to be inspected are a gas source, a hydraulic source and a hydraulic source respectively; a knocking hammer is also provided on one side of the third image recognition module, and the knocking hammer is arranged on one side of the third image recognition module through a mounting frame.

[0010] The above-mentioned pressure gauge calibration device is characterized in that: a circuit board is arranged in the electric control cabinet, and a controller is integrated on the circuit board; the signal output end of the first pressure sensor, the signal output end of the first image recognition module, the signal output end of the second image recognition module, the signal output end of the third image recognition module, and the signal output end of the second pressure sensor are all connected to the signal input end of the controller; the driving device, pressure source, stop valve pressure gauge connector, the first turnover manipulator, the knocking hammer and the second turnover manipulator are all controlled by the controller.

[0011] The present invention also provides a method for calibrating a pressure gauge by a pressure gauge calibration device, characterized in that the calibration process of the pressure gauge to be calibrated in each pressure gauge turnover box on the rotating drive platform is the same, and the calibration process of the pressure gauge in one of the pressure gauge turnover boxes is as follows: Step 1: Circulate the pressure gauge to be calibrated: place the pressure gauge to be calibrated in the pressure gauge turnover box, the first pressure sensor on the pressure gauge turnover box receives the pressure signal and transmits it to the controller, the controller controls the drive device to drive the rotary drive platform to rotate clockwise or counterclockwise, so that a pressure gauge turnover box on the rotary drive platform is rotated to the same horizontal plane as the temporary storage turnover box, and the first turnover manipulator circulates the pressure gauge to be calibrated in the pressure gauge turnover box to the temporary storage turnover box; Step 2: Identify and verify the first pressure gauge unit to be tested. The process is as follows: Step 201, the second pressure sensor on the temporary storage turnover box receives the pressure signal and transmits it to the controller, the controller controls the conveyor belt to work, the first turnover manipulator moves the pressure gauge to be calibrated onto the conveyor belt, the pressure gauge to be calibrated is transmitted to the first pressure gauge to be inspected unit, the second image recognition module in the first pressure gauge to be inspected unit identifies the maximum pressure of the pressure gauge to be calibrated, if the maximum pressure of the pressure gauge to be calibrated belongs to the inspection range of the first pressure gauge to be inspected unit, the second turnover manipulator in the first pressure gauge to be inspected unit moves the pressure gauge to be calibrated to the pressure gauge calibration area, so that the pressure gauge to be calibrated is connected to the stop valve pressure gauge joint; otherwise, execute step three; Step 202, using the calibration component in the first pressure gauge to be tested unit to calibrate the pressure gauge to be tested, when the pressure gauge to be tested passes the initial inspection, the controller controls the hammer to tap the pressure gauge to be tested, if the change value of the indication of the pressure gauge to be tested before and after the hammer tapping does not exceed the allowable value, the pressure gauge to be tested is qualified; Step 203, when the pressure gauge to be inspected passes the inspection, the second turnover manipulator in the first pressure gauge to be inspected unit removes the pressure gauge to be inspected from the stop valve pressure gauge joint and moves it to the conveyor belt, and the qualified pressure gauge to be inspected is conveyed by the conveyor belt to the qualified inspection identification unit; Step 3: Identify and verify the unit to be tested of the second pressure gauge. The process is as follows: Step 301: The remaining pressure gauges to be calibrated in step 201 are conveyed by a conveyor belt to the second pressure gauge to be checked unit. The second image recognition module in the second pressure gauge to be checked unit identifies the maximum pressure value of the pressure gauge to be calibrated. If the maximum pressure value of the pressure gauge to be calibrated belongs to the to-be-checked range of the second pressure gauge to be checked unit, the second turnover manipulator in the second pressure gauge to be checked unit moves the pressure gauge to be calibrated to the pressure gauge calibration area, so that the pressure gauge to be calibrated is connected to the stop valve pressure gauge joint; otherwise, execute step 4; Step 302, using the calibration component in the second pressure gauge to be tested unit to calibrate the pressure gauge to be tested. When the pressure gauge to be tested passes the initial inspection, the controller controls the hammer to tap the pressure gauge to be tested. If the change value of the indication of the pressure gauge to be tested before and after the tapping by the hammer does not exceed the allowable value, the pressure gauge to be tested is qualified. Step 303: When the pressure gauge to be inspected passes the inspection, the second turnover manipulator in the second pressure gauge to be inspected unit removes the pressure gauge to be inspected from the stop valve pressure gauge joint and moves it to the conveyor belt. The qualified pressure gauge to be inspected is conveyed by the conveyor belt to the qualified inspection identification unit. Step 4: Identify and verify the unit to be tested of the third pressure gauge. The process is as follows: Step 401: The remaining pressure gauges to be tested in step 301 are conveyed by the conveyor belt to the third pressure gauge to be tested unit. The second turnover manipulator in the third pressure gauge to be tested unit moves the pressure gauge to be tested to the pressure gauge testing area, so that the pressure gauge to be tested is connected to the stop valve pressure gauge joint; otherwise, execute step 4; Step 402, using the calibration component in the third pressure gauge to be tested unit to calibrate the pressure gauge to be tested. When the pressure gauge to be tested passes the initial inspection, the controller controls the hammer to tap the pressure gauge to be tested. If the change value of the indication of the pressure gauge to be tested before and after the hammer tapping does not exceed the allowable value, the pressure gauge to be tested is qualified. Step 403: When the pressure gauge to be inspected passes the inspection, the second turnover manipulator in the third pressure gauge inspection unit removes the pressure gauge to be inspected from the stop valve pressure gauge joint and moves it to the conveyor belt. The qualified pressure gauge to be inspected is conveyed by the conveyor belt to the qualified inspection identification unit. Step 5: Coding the qualified pressure gauge and pasting the certificate: the first image recognition module in the qualified identification unit identifies the maximum pressure of the pressure gauge to be calibrated that is transmitted to the qualified identification unit. After the coding and labeling device performs corresponding coding on the pressure gauge to be calibrated and pastes the certificate, the pressure gauge to be calibrated is a qualified pressure gauge that has passed the calibration. Step six, turnover of qualified pressure gauges: the qualified pressure gauges are moved to the temporary storage turnover box of the pressure gauge storage turnover table driven by the conveyor belt, the first turnover manipulator moves the qualified pressure gauge in the temporary storage turnover box to the pressure gauge turnover box, the first pressure sensor in the pressure gauge turnover box receives the pressure signal and transmits it to the controller, the controller controls the drive device to drive the rotating drive platform to rotate clockwise or counterclockwise, and when the pressure gauge turnover box storing the qualified pressure gauge rotates to the bottom of the rotating drive platform, the qualified pressure gauge is taken out.

[0012] The above-mentioned method for calibrating a pressure gauge is characterized in that: in step 202, step 302 and step 402, the third image recognition module corresponding to the stop valve pressure gauge connector connected to the pressure gauge to be calibrated identifies the indication of the pressure gauge to be calibrated; the controller controls the pressure source in the pressure gauge to be calibrated unit to work, pressurizes the pressure gauge to be calibrated connected to the stop valve pressure gauge connector, and performs point-by-point error detection according to the indication of the pressure gauge to be calibrated to obtain the measurement error of each indication. If the measurement error of each indication meets the allowable error, the pressure gauge to be calibrated is qualified, otherwise, the pressure gauge to be calibrated is unqualified.

[0013] The above-mentioned method for calibrating a pressure gauge is characterized in that: in step 202, step 302 and step 402, when the pressure gauge to be calibrated fails the calibration, the second turnover robot in the pressure gauge to be inspected unit removes the pressure gauge to be calibrated from the stop valve pressure gauge joint and places it into the pressure gauge calibration failure area in the pressure gauge to be inspected unit.

[0014] The beneficial effects of the present invention are that through the cooperation of the pressure gauge calibration platform and the pressure gauge turnover box driving platform, the needs of automatic and batch calibration are realized, the labor intensity of workers is reduced, the calibration efficiency is improved, and the calibration of the pressure gauge to be calibrated is pre-set to ensure the accuracy of the calibration; the calibration process is effectively combined with the image recognition module to realize the direct printing and output of the QR code certificate from the pressure gauge calibration, thereby improving the convenience of operation.

[0015] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a flowchart of the method of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 4It is a schematic structural diagram of the first pressure gauge to be inspected unit and the second pressure gauge to be inspected unit of the present invention.

[0020] Description of reference numerals: 1—rotating driving platform; 2—driving device; 3—pressure gauge turnover box; 4—first pressure sensor; 5—fixing seat; 6—supporting fixing rod; 7—rotating axis; 8—conveyor belt; 9—pressure gauge verification failure area; 10—first turnover robot; 11—box to be inspected; 12—second image recognition module; 13—pressure gauge inspection area; 14—second turnover manipulator; 15—pressure source; 16—third image recognition module; 17—stop valve pressure gauge connector; 18—electric control cabinet; 19—second pressure sensor; 20—qualified identification box; 21—first image recognition module; 22—Pressure gauge to be calibrated; 23—Qualified pressure gauge; 24—Temporary storage turnover box; 25—beating hammer; 26—mounting frame; 27—correction piece. DETAILED DESCRIPTION

[0021] like Figures 2 to 4 A pressure gauge calibration device shown includes a pressure gauge turnover box driving platform, a pressure gauge calibration platform arranged on one side of the pressure gauge turnover box driving platform and cooperating with the pressure gauge turnover box driving platform, and an electric control cabinet 18 arranged on one side of the pressure gauge calibration platform and used to control the pressure gauge calibration platform and the pressure gauge turnover box driving platform; The pressure gauge turnover box driving platform comprises a rotating driving platform 1 and a plurality of pressure gauge turnover boxes 3 arranged on the rotating driving platform 1, a driving device 2 is arranged on the rotating driving platform 1, and a first pressure sensor 4 is arranged in each of the pressure gauge turnover boxes 3; The pressure gauge verification platform includes a pressure gauge verification and transfer platform, and a pressure gauge storage and transfer platform, a plurality of pressure gauge to-be-tested units, and a verification qualified identification unit which are sequentially arranged on the pressure gauge verification and transfer platform; A conveyor belt 8 is provided on the top of the pressure gauge verification conveying platform, and the conveyor belt 8 is surrounded by a frame structure. A plurality of the pressure gauge units to be inspected and the qualified verification identification units are arranged on the conveyor belt 8 in sequence. The pressure gauge storage turnover platform and the plurality of the pressure gauge units to be inspected are arranged on the same side of the conveyor belt 8, and the qualified verification identification units are arranged on the other side of the conveyor belt 8. The pressure gauge storage turntable is arranged on the side of the conveyor belt 8 close to the rotating drive platform 1, and a first turnover manipulator 10 is arranged on one side of the pressure gauge storage turntable; a second pressure sensor 19 is arranged on the pressure gauge storage turntable, and a temporary storage turntable 24 is arranged on the pressure gauge storage turntable; The plurality of pressure gauge units to be inspected are arranged on the conveyor belt 8 in sequence, and the plurality of pressure gauge units to be inspected are respectively a first pressure gauge unit to be inspected, a second pressure gauge unit to be inspected, and a third pressure gauge unit to be inspected; The qualified identification unit includes a qualified identification box 20 arranged on the conveyor belt 8, and a first image recognition module 21 and a coding and labeling device both arranged in the qualified identification box 20; the qualified identification box 20 is a door-shaped structure, and the openings on both sides of the qualified identification box 20 are arranged along the extension direction of the conveyor belt 8; the first image recognition module 21 is arranged on the side of the qualified identification box 20 away from the rotating drive platform 1, and the coding and labeling device is arranged on the side of the qualified identification box 20 close to the rotating drive platform 1.

[0022] The present invention realizes the demand for automatic and batch calibration through the cooperation of the pressure gauge calibration platform and the pressure gauge turnover box driving platform, reduces the labor intensity of workers, improves the calibration efficiency, and the calibration of the pressure gauge 22 to be calibrated is pre-set to ensure the accuracy of the calibration.

[0023] In actual use, the controller controls the driving device 2 to operate, driving the rotating driving platform 1 to rotate, so that the pressure gauge turnover box 3 on the rotating driving platform 1 can rotate, and the pressure gauge 22 to be calibrated can be transferred to the pressure gauge storage turnover table, and the qualified pressure gauge 23 that has passed the calibration can be transferred to the bottom of the rotating driving platform 1, so as to facilitate the removal of the qualified pressure gauge 23. The driving device 2 can be a motor, driving the rotating driving platform 1 to rotate.

[0024] It should be noted that, in the actual calibration process, multiple pressure gauge calibration platforms can be arranged, and the multiple pressure gauge calibration platforms are arranged up and down, and the height between two adjacent pressure gauge calibration platforms meets the height difference between two adjacent pressure gauge turnover boxes 3 on the rotating rack, so that the pressure gauge calibration device can operate on multiple layers at the same time to calibrate the pressure gauge.

[0025] like Figure 1 As shown, in this embodiment, the rotating drive platform 1 includes a fixed table and a rotating frame arranged on the fixed table and capable of rotating around the fixed table, and the fixed table and the rotating frame are rotatably connected; the fixed table includes a horizontally arranged fixed seat 5 and a supporting fixed frame arranged on the top of the fixed seat 5, and the fixed seat 5 and the supporting fixed frame are integrally formed; the driving device 2 is arranged on the fixed seat 5.

[0026] like Figure 1 As shown, in this embodiment, the supporting and fixing frame includes two supporting and fixing rods 6 symmetrically arranged on the top of the fixing seat 5, the tops of the two supporting and fixing rods 6 intersect, and the tops of the two supporting and fixing rods 6 are connected with a rotating shaft 7; the rotating frame is arranged on the rotating shaft 7, and the plurality of pressure gauge turnover boxes 3 are arranged on the outer edge of the rotating frame, and the plurality of pressure gauge turnover boxes 3 are evenly arranged along the circumference of the rotating frame.

[0027] In this embodiment, the inspection ranges of the first pressure gauge unit to be inspected, the second pressure gauge unit to be inspected and the third pressure gauge unit to be inspected are different. The inspection ranges of the first pressure gauge unit to be inspected, the second pressure gauge unit to be inspected and the third pressure gauge unit to be inspected are -0.1MPa~0.1MPa, 0MPa~10MPa, and 10MPa~250MPa, respectively.

[0028] In this embodiment, the structures of the first pressure gauge to be inspected unit and the second pressure gauge to be inspected unit are the same. The first pressure gauge to be inspected unit and the second pressure gauge to be inspected unit both include an inspection box 11 arranged on a conveyor belt 8, and a second image recognition module 12 and a verification module both arranged in the inspection box 11; the second image recognition module 12 is arranged on one side of the inspection box 11 close to the rotating drive platform 1, and the inspection box 11 includes a pressure gauge to be inspected area 13 and a pressure gauge verification unqualified area 9; The third pressure gauge inspection unit includes an inspection box 11 arranged on the conveyor belt 8 and a verification module arranged in the inspection box 11; the inspection box 11 includes a pressure gauge inspection area 13 and a pressure gauge verification failure area 9.

[0029] In this embodiment, the inspection module includes a second turnover manipulator 14 disposed on one side of the inspection box 11, a plurality of inspection components disposed on one side of the conveyor belt 8, and a pressure source 15 disposed on the same side of the inspection component and cooperating with the inspection component; The inspection box 11 is arranged on one side of the conveyor belt 8, the verification component and the pressure source 15 are arranged on the other side of the conveyor belt 8, and the area where the verification component is located is the pressure gauge verification area; The calibration component includes a third image recognition module 16 and a stop valve pressure gauge connector 17 that cooperates with the third image recognition module 16; the pressure source 15 is connected to the stop valve pressure gauge connector 17; the pressure sources 15 of the first pressure gauge unit to be inspected, the second pressure gauge unit to be inspected and the third pressure gauge unit to be inspected are respectively a gas source, a hydraulic source and a hydraulic source; a knocking hammer 25 is also provided on one side of the third image recognition module 16, and the knocking hammer 25 is arranged on one side of the third image recognition module 16 through a mounting frame 26.

[0030] In this embodiment, a circuit board is provided in the electric control cabinet 18, and a controller is integrated on the circuit board. The signal output end of the first pressure sensor 4, the signal output end of the first image recognition module 21, the signal output end of the second image recognition module 12, the signal output end of the third image recognition module 16, and the signal output end of the second pressure sensor 19 are all connected to the signal input end of the controller; the driving device 2, the pressure source 15, the stop valve pressure gauge connector 17, the first turnover manipulator 10, the knocking hammer 25 and the second turnover manipulator 14 are all controlled by the controller.

[0031] like Figures 1 to 4 The method for calibrating a pressure gauge by a pressure gauge calibration device shown in the figure is characterized in that the calibration process of the pressure gauge 22 to be calibrated in each pressure gauge turnover box 3 on the rotating drive platform 1 is the same, and the calibration process of the pressure gauge in one of the pressure gauge turnover boxes is as follows: Step 1: Circulate the pressure gauge to be calibrated: place the pressure gauge 22 to be calibrated in the pressure gauge turnover box 3, the first pressure sensor 4 on the pressure gauge turnover box 3 receives the pressure signal and transmits it to the controller, the controller controls the driving device 2 to operate, drives the rotating driving platform 1 to rotate clockwise or counterclockwise, and when a pressure gauge turnover box 3 on the rotating driving platform 1 is rotated to the same horizontal plane as the temporary storage turnover box 24, the first turnover manipulator 10 circulates the pressure gauge 22 to be calibrated in the pressure gauge turnover box 3 to the temporary storage turnover box 24; Step 2: Identify and verify the first pressure gauge unit to be tested. The process is as follows: Step 201, the second pressure sensor 19 on the temporary storage turnover box 24 receives the pressure signal and transmits it to the controller, the controller controls the conveyor belt 8 to work, the first turnover manipulator 10 moves the pressure gauge 22 to be calibrated onto the conveyor belt 8, the pressure gauge 22 to be calibrated is transmitted to the first pressure gauge to be inspected unit, the second image recognition module 12 in the first pressure gauge to be inspected unit identifies the maximum pressure of the pressure gauge 22 to be calibrated, if the maximum pressure of the pressure gauge 22 to be calibrated belongs to the inspection range of the first pressure gauge to be inspected unit, the second turnover manipulator 14 in the first pressure gauge to be inspected unit moves the pressure gauge 22 to be calibrated to the pressure gauge calibration area, so that the pressure gauge 22 to be calibrated is connected to the stop valve pressure gauge connector 17; otherwise, execute step three; Step 202, using the calibration component in the first pressure gauge to be tested unit to calibrate the pressure gauge to be tested 22, when the pressure gauge to be tested 22 passes the initial inspection, the controller controls the knocking hammer 25 to tap the pressure gauge to be tested 22, if the change value of the indication of the pressure gauge to be tested 22 before and after the knocking by the knocking hammer 25 does not exceed the allowable value, then the pressure gauge to be tested 22 passes the inspection; Step 203, when the pressure gauge to be inspected 22 passes the inspection, the second turnover manipulator 14 in the first pressure gauge to be inspected unit removes the pressure gauge to be inspected 22 from the stop valve pressure gauge connector 17 and moves it to the conveyor belt 8, and the pressure gauge to be inspected 22 that passes the inspection is conveyed by the conveyor belt 8 to the inspection pass identification unit; Step 3: Identify and verify the unit to be tested of the second pressure gauge. The process is as follows: Step 301: The remaining pressure gauges 22 to be inspected in step 201 are conveyed by the conveyor belt 8 to the second pressure gauge inspection unit. The second image recognition module 12 in the second pressure gauge inspection unit identifies the maximum pressure of the pressure gauge 22 to be inspected. If the maximum pressure of the pressure gauge 22 to be inspected belongs to the inspection range of the second pressure gauge inspection unit, the second turnover manipulator 14 in the second pressure gauge inspection unit moves the pressure gauge 22 to be inspected to the pressure gauge inspection area, so that the pressure gauge 22 to be inspected is connected to the stop valve pressure gauge connector 17; otherwise, execute step 4; Step 302, using the calibration component in the second pressure gauge to be tested unit to calibrate the pressure gauge 22 to be tested. When the pressure gauge 22 to be tested passes the initial inspection, the controller controls the hammer 25 to tap the pressure gauge 22 to be tested. If the change value of the indication of the pressure gauge 22 to be tested before and after the hammer 25 taps does not exceed the allowable value, the pressure gauge 22 to be tested passes the inspection. Step 303, when the pressure gauge to be inspected 22 passes the inspection, the second turnover manipulator 14 in the second pressure gauge to be inspected unit removes the pressure gauge to be inspected 22 from the stop valve pressure gauge connector 17 and moves it to the conveyor belt 8, and the pressure gauge to be inspected 22 that passes the inspection is conveyed by the conveyor belt 8 to the inspection pass identification unit; Step 4: Identify and verify the unit to be tested of the third pressure gauge. The process is as follows: Step 401: The remaining pressure gauges 22 to be tested in step 301 are conveyed by the conveyor belt 8 to the third pressure gauge to be tested unit. The second turnover manipulator 14 in the third pressure gauge to be tested unit moves the pressure gauge 22 to be tested to the pressure gauge testing area, so that the pressure gauge 22 to be tested is connected to the stop valve pressure gauge connector 17; otherwise, execute step 4; Step 402, using the calibration component in the third pressure gauge to be inspected unit to calibrate the pressure gauge to be inspected 22. When the pressure gauge to be inspected 22 passes the initial inspection, the controller controls the hammer 25 to tap the pressure gauge to be inspected 22. If the change value of the indication of the pressure gauge to be inspected 22 before and after the tapping by the hammer 25 does not exceed the allowable value, the pressure gauge to be inspected 22 passes the inspection. Step 403, when the pressure gauge to be inspected 22 passes the inspection, the second turnover manipulator 14 in the third pressure gauge to be inspected unit removes the pressure gauge to be inspected 22 from the stop valve pressure gauge connector 17 and moves it to the conveyor belt 8, and the pressure gauge to be inspected 22 that passes the inspection is conveyed by the conveyor belt 8 to the inspection pass identification unit; Step 5: Coding the qualified pressure gauge and pasting the certificate: the first image recognition module 21 in the qualified identification unit identifies the maximum pressure of the pressure gauge to be calibrated 22 delivered to the qualified identification unit, and after the coding and labeling device performs corresponding coding on the pressure gauge to be calibrated 22 and pasting the certificate, the pressure gauge to be calibrated 22 is a qualified pressure gauge 23 that has passed the calibration; Step six, turnover of qualified pressure gauges: the qualified pressure gauge 23 is moved to the temporary storage turnover box 24 of the pressure gauge storage turnover table driven by the conveyor belt 8, and the first turnover manipulator 10 moves the qualified pressure gauge 23 in the temporary storage turnover box 24 to the pressure gauge turnover box 3. The first pressure sensor 4 in the pressure gauge turnover box 3 receives the pressure signal and transmits it to the controller. The controller controls the drive device 2 to operate, driving the rotating drive platform 1 to rotate clockwise or counterclockwise. When the pressure gauge turnover box 3 storing the qualified pressure gauge 23 rotates to the bottom of the rotating drive platform 1, the qualified pressure gauge 23 is taken out.

[0032] The present invention effectively combines the calibration process with the image recognition module to achieve direct printing and output of a two-dimensional code certificate from the pressure gauge calibration, thereby improving the convenience of operation.

[0033] In step 201, when the first turnover manipulator 10 moves the pressure gauge 22 to be calibrated onto the conveyor belt 8, it is necessary to ensure that the front side of the pressure gauge 22 to be calibrated faces upward; the first turnover manipulator 10 is equipped with a vacuum suction cup, which absorbs the glass, i.e., the front side of the pressure gauge 22 to be calibrated. If the vacuum suction cup cannot absorb the pressure gauge 22 to be calibrated, it means that the back side of the pressure gauge 22 to be calibrated faces upward, and the first turnover manipulator 10 needs to turn the pressure gauge 22 to be calibrated over so that its front side faces upward. The front side of the pressure gauge 22 to be calibrated is glass with a smooth surface, while the back side of the pressure gauge 22 to be calibrated is generally threaded or concave, and is not as smooth as the front side.

[0034] In step 201, step 301 and step 401, when the shut-off valve pressure gauge connectors 17 in the pressure gauge calibration area are all connected to the pressure gauges 22 to be calibrated, the second turnover robot 14 in the pressure gauge to be inspected unit moves the unconnected pressure gauges 22 to be calibrated to one side of the calibration component, and the side of the calibration component can be used as a pressure gauge storage area.

[0035] The variation values ​​described in step 202, step 302 and step 402 are the maximum allowable variation values ​​required by the regulations.

[0036] like Figure 3 and Figure 4 As shown, a deviation correction member 27 is provided at the entrance of the first pressure gauge to be inspected unit, which is mainly used to ensure that the front side of the pressure gauge 22 to be inspected faces upward, so that the subsequent image recognition module can work normally. The deviation correction member 27 is a V-shaped structure, and the open end of the deviation correction member 27 is close to the rotary drive platform 1. The deviation correction member 27 is composed of two baffles, and the two baffles are elastically connected. The bottom of the pressure gauge 22 to be inspected is provided with an adapter. When the front side of the pressure gauge 22 to be inspected faces upward, the adapter at the bottom of the pressure gauge 22 to be inspected can directly push the deviation correction member 27 open, so that the pressure gauge 22 to be inspected can be smoothly transferred to the first pressure gauge to be inspected unit; if the reverse side of the pressure gauge 22 to be inspected faces upward, the top of the pressure gauge 22 to be inspected cannot push the deviation correction member 27 open, so that the pressure gauge 22 to be inspected cannot be smoothly transferred to the first pressure gauge to be inspected unit, then the first turnover manipulator 10 needs to turn over the pressure gauge 22 to be inspected and then pass through the deviation correction member 27.

[0037] In this embodiment, in step 202, step 302 and step 402, the third image recognition module 16 corresponding to the stop valve pressure gauge connector 17 connected to the pressure gauge to be calibrated 22 identifies the indication of the pressure gauge to be calibrated 22; the controller controls the pressure source 15 in the pressure gauge to be calibrated unit to work, pressurizes the pressure gauge to be calibrated 22 connected to the stop valve pressure gauge connector 17, and performs point-by-point error detection according to the indication of the pressure gauge to be calibrated 22 to obtain the measurement error of each indication. If the measurement error of each indication meets the allowable error, the pressure gauge to be calibrated 22 is qualified, otherwise, the pressure gauge to be calibrated 22 is unqualified.

[0038] In this embodiment, in step 202, step 302 and step 402, when the pressure gauge to be calibrated 22 fails the calibration, the second turnover robot 14 in the pressure gauge to be calibrated unit removes the pressure gauge to be calibrated 22 from the stop valve pressure gauge connector 17 and places it into the pressure gauge calibration failure zone 9 in the pressure gauge to be calibrated unit.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A pressure gauge calibration device and method, characterized in that: It comprises a pressure gauge turnover box driving platform, a pressure gauge verification platform arranged on one side of the pressure gauge turnover box driving platform and cooperating with the pressure gauge turnover box driving platform, and an electric control cabinet (18) arranged on one side of the pressure gauge verification platform and used to control the pressure gauge verification platform and the pressure gauge turnover box driving platform; The pressure gauge turnover box driving platform comprises a rotating driving platform (1) and a plurality of pressure gauge turnover boxes (3) each arranged on the rotating driving platform (1); a driving device (2) is arranged on the rotating driving platform (1); and each of the pressure gauge turnover boxes (3) is provided with a first pressure sensor (4); The pressure gauge verification platform includes a pressure gauge verification and transfer platform, and a pressure gauge storage and transfer platform, a plurality of pressure gauge to-be-tested units, and a verification qualified identification unit which are sequentially arranged on the pressure gauge verification and transfer platform; A conveyor belt (8) is arranged on the top of the pressure gauge calibration conveying platform, the conveyor belt (8) forms a frame-type structure, a plurality of the pressure gauge units to be inspected and the calibration qualified identification units are arranged in sequence on the conveyor belt (8), the pressure gauge storage turnover platform and the plurality of the pressure gauge units to be inspected are arranged on the same side of the conveyor belt (8), and the calibration qualified identification units are arranged on the other side of the conveyor belt (8); The pressure gauge storage turntable is arranged on a side of the conveyor belt (8) close to the rotary drive platform (1), and a first turntable manipulator (10) is arranged on one side of the pressure gauge storage turntable; a second pressure sensor (19) is arranged on the pressure gauge storage turntable, and a temporary storage turntable (24) is arranged on the pressure gauge storage turntable; The plurality of pressure gauge units to be inspected are arranged in sequence on the conveyor belt (8), and the plurality of pressure gauge units to be inspected are respectively a first pressure gauge unit to be inspected, a second pressure gauge unit to be inspected, and a third pressure gauge unit to be inspected; The qualified identification unit comprises a qualified identification box (20) arranged on a conveyor belt (8), and a first image recognition module (21) and a coding and labeling device both arranged in the qualified identification box (20); the qualified identification box (20) is a gate-shaped structure, and the openings on both sides of the qualified identification box (20) are arranged along the extension direction of the conveyor belt (8); the first image recognition module (21) is arranged on a side of the qualified identification box (20) away from the rotating drive platform (1), and the coding and labeling device is arranged on a side of the qualified identification box (20) close to the rotating drive platform (1).

2. A pressure gauge calibration device according to claim 1, characterized in that: The rotary drive platform (1) comprises a fixed platform and a rotating frame arranged on the fixed platform and rotatable around the fixed platform, the fixed platform and the rotating frame being rotatably connected; the fixed platform comprises a horizontally arranged fixed seat (5) and a supporting fixed frame arranged on the top of the fixed seat (5), the fixed seat (5) and the supporting fixed frame being integrally formed; the driving device (2) is arranged on the fixed seat (5).

3. A pressure gauge calibration device according to claim 1, characterized in that: The support and fixing frame comprises two support and fixing rods (6) symmetrically arranged on the top of the fixing seat (5), the tops of the two support and fixing rods (6) intersect, and the tops of the two support and fixing rods (6) are connected to a rotating shaft (7); the rotating frame is arranged on the rotating shaft (7), and the plurality of pressure gauge turnover boxes (3) are arranged on the outer edge of the rotating frame, and the plurality of pressure gauge turnover boxes (3) are evenly arranged along the circumference of the rotating frame.

4. A pressure gauge calibration device according to claim 1, characterized in that: The inspection ranges of the first pressure gauge unit to be inspected, the second pressure gauge unit to be inspected and the third pressure gauge unit to be inspected are different. The inspection ranges of the first pressure gauge unit to be inspected, the second pressure gauge unit to be inspected and the third pressure gauge unit to be inspected are -0.1MPa~0.1MPa, 0MPa~10MPa, and 10MPa~250MPa respectively.

5. A pressure gauge calibration device according to claim 4, characterized in that: The structures of the first pressure gauge unit to be inspected and the second pressure gauge unit to be inspected are the same. The first pressure gauge unit to be inspected and the second pressure gauge unit to be inspected both comprise an inspection box (11) arranged on a conveyor belt (8), and a second image recognition module (12) and a verification module both arranged in the inspection box (11); the second image recognition module (12) is arranged on a side of the inspection box (11) close to the rotating drive platform (1), and the inspection box (11) comprises a pressure gauge inspection area (13) and a pressure gauge verification failure area (9); The third pressure gauge inspection unit comprises an inspection box (11) arranged on a conveyor belt (8), and a verification module arranged in the inspection box (11); the inspection box (11) comprises a pressure gauge inspection area (13) and a pressure gauge verification failure area (9).

6. A pressure gauge calibration device according to claim 5, characterized in that: The inspection module comprises a second turnover robot (14) arranged on one side of the inspection box (11), a plurality of inspection components all arranged on one side of the conveyor belt (8), and a pressure source (15) arranged on the same side of the inspection components and cooperating with the inspection components; The inspection box (11) is arranged on one side of the conveyor belt (8), the verification component and the pressure source (15) are arranged on the other side of the conveyor belt (8), and the area where the verification component is located is a pressure gauge verification area; The verification component comprises a third image recognition module (16) and a stop valve pressure gauge connector (17) matched with the third image recognition module (16); the pressure source (15) is connected to the stop valve pressure gauge connector (17); the pressure sources (15) of the first pressure gauge unit to be tested, the second pressure gauge unit to be tested and the third pressure gauge unit to be tested are respectively a gas source, a hydraulic source and a hydraulic source; a knock hammer (25) is also provided on one side of the third image recognition module (16), and the knock hammer (25) is arranged on one side of the third image recognition module (16) through a mounting frame (26).

7. A pressure gauge calibration device according to claim 6, characterized in that: A circuit board is provided in the electric control cabinet (18), and a controller is integrated on the circuit board; a signal output end of the first pressure sensor (4), a signal output end of the first image recognition module (21), a signal output end of the second image recognition module (12), a signal output end of the third image recognition module (16), and a signal output end of the second pressure sensor (19) are all connected to a signal input end of the controller; and the drive device (2), the pressure source (15), the stop valve pressure gauge connector (17), the first turnover manipulator (10), the striking hammer (25), and the second turnover manipulator (14) are all controlled by the controller.

8. The method for calibrating a pressure gauge by a pressure gauge calibrating device according to claim 7, characterized in that: The calibration process of the pressure gauge to be calibrated (22) in each pressure gauge turnover box (3) on the rotary drive platform (1) is the same. The calibration process of the pressure gauge in one of the pressure gauge turnover boxes is as follows: Step 1: Circulating the pressure gauge to be calibrated: placing the pressure gauge to be calibrated (22) in the pressure gauge turnover box (3); the first pressure sensor (4) on the pressure gauge turnover box (3) receives the pressure signal and transmits it to the controller; the controller controls the driving device (2) to operate, driving the rotating driving platform (1) to rotate clockwise or counterclockwise, so that a pressure gauge turnover box (3) on the rotating driving platform (1) is rotated to the same horizontal plane as the temporary storage turnover box (24); the first turnover manipulator (10) circulates the pressure gauge to be calibrated (22) in the pressure gauge turnover box (3) to the temporary storage turnover box (24); Step 2: Identify and verify the first pressure gauge unit to be tested. The process is as follows: Step 201, the second pressure sensor (19) on the temporary storage turnover box (24) receives a pressure signal and transmits it to the controller, the controller controls the conveyor belt (8) to work, the first turnover manipulator (10) moves the pressure gauge to be calibrated (22) onto the conveyor belt (8), the pressure gauge to be calibrated (22) is transmitted to the first pressure gauge to be inspected unit, the second image recognition module (12) in the first pressure gauge to be inspected unit identifies the maximum pressure of the pressure gauge to be calibrated (22), if the maximum pressure of the pressure gauge to be calibrated (22) belongs to the inspection range of the first pressure gauge to be inspected unit, the second turnover manipulator (14) in the first pressure gauge to be inspected unit moves the pressure gauge to be calibrated (22) to the pressure gauge calibration area, so that the pressure gauge to be calibrated (22) is connected to the stop valve pressure gauge connector (17); otherwise, execute step three; Step 202, using the calibration component in the first pressure gauge to be tested unit to calibrate the pressure gauge to be tested (22), when the pressure gauge to be tested (22) passes the initial inspection, the controller controls the knocking hammer (25) to tap the pressure gauge to be tested (22), if the change value of the indication of the pressure gauge to be tested (22) before and after the knocking by the knocking hammer (25) does not exceed the allowable value, then the pressure gauge to be tested (22) passes the inspection; Step 203, when the pressure gauge to be inspected (22) passes the inspection, the second turnover manipulator (14) in the first pressure gauge to be inspected unit removes the pressure gauge to be inspected (22) from the stop valve pressure gauge connector (17) and moves it to the conveyor belt (8), and the pressure gauge to be inspected (22) that passes the inspection is transported by the conveyor belt (8) to the inspection pass identification unit; Step 3: Identify and verify the unit to be tested of the second pressure gauge. The process is as follows: Step 301: The remaining pressure gauges to be calibrated (22) in step 201 are conveyed by the conveyor belt (8) to the second pressure gauge to be checked unit. The second image recognition module (12) in the second pressure gauge to be checked unit identifies the maximum pressure of the pressure gauge to be calibrated (22). If the maximum pressure of the pressure gauge to be calibrated (22) belongs to the to-be-checked range of the second pressure gauge to be checked unit, the second turnover manipulator (14) in the second pressure gauge to be checked unit moves the pressure gauge to be calibrated (22) to the pressure gauge calibration area, so that the pressure gauge to be calibrated (22) is connected to the stop valve pressure gauge connector (17); otherwise, step 4 is executed. Step 302, using the calibration component in the second pressure gauge to be tested unit to calibrate the pressure gauge to be tested (22), when the pressure gauge to be tested (22) passes the initial inspection, the controller controls the knocking hammer (25) to tap the pressure gauge to be tested (22), if the change value of the indication of the pressure gauge to be tested (22) before and after the knocking by the knocking hammer (25) does not exceed the allowable value, then the pressure gauge to be tested (22) passes the inspection; Step 303: When the pressure gauge to be inspected (22) passes the inspection, the second turnover manipulator (14) in the second pressure gauge to be inspected unit removes the pressure gauge to be inspected (22) from the stop valve pressure gauge connector (17) and moves it to the conveyor belt (8); the pressure gauge to be inspected (22) that passes the inspection is conveyed by the conveyor belt (8) to the inspection pass identification unit; Step 4: Identify and verify the unit to be tested of the third pressure gauge. The process is as follows: Step 401: the remaining pressure gauges (22) to be tested in step 301 are conveyed by the conveyor belt (8) to the third pressure gauge unit to be tested, and the second turnover manipulator (14) in the third pressure gauge unit to be tested moves the pressure gauges (22) to be tested to the pressure gauge testing area, so that the pressure gauges (22) to be tested are connected to the stop valve pressure gauge connector (17); otherwise, step 4 is executed; Step 402, using the calibration component in the third pressure gauge to be tested unit to calibrate the pressure gauge to be tested (22), when the pressure gauge to be tested (22) passes the initial inspection, the controller controls the knocking hammer (25) to tap the pressure gauge to be tested (22), if the change value of the indication of the pressure gauge to be tested (22) before and after the knocking by the knocking hammer (25) does not exceed the allowable value, then the pressure gauge to be tested (22) passes the inspection; Step 403: When the pressure gauge to be inspected (22) passes the inspection, the second turnover manipulator (14) in the third pressure gauge to be inspected unit removes the pressure gauge to be inspected (22) from the stop valve pressure gauge connector (17) and moves it to the conveyor belt (8); the pressure gauge to be inspected (22) that passes the inspection is conveyed by the conveyor belt (8) to the inspection pass identification unit; Step 5: Coding the qualified pressure gauge and attaching the certificate of conformity: the first image recognition module (21) in the qualified inspection identification unit identifies the maximum pressure of the pressure gauge to be inspected (22) transmitted to the qualified inspection identification unit, and after the coding and labeling device performs corresponding coding on the pressure gauge to be inspected (22) and attaches the certificate of conformity, the pressure gauge to be inspected (22) is a qualified pressure gauge (23) that has passed the inspection; Step 6: Circulating qualified pressure gauges: The qualified pressure gauge (23) is moved to the temporary storage turnover box (24) of the pressure gauge storage turnover table driven by the conveyor belt (8), and the first turnover manipulator (10) moves the qualified pressure gauge (23) in the temporary storage turnover box (24) to the pressure gauge turnover box (3). The first pressure sensor (4) in the pressure gauge turnover box (3) receives the pressure signal and transmits it to the controller. The controller controls the drive device (2) to operate, driving the rotating drive platform (1) to rotate clockwise or counterclockwise. When the pressure gauge turnover box (3) storing the qualified pressure gauge (23) rotates to the bottom of the rotating drive platform (1), the qualified pressure gauge (23) is taken out.

9. The method for calibrating a pressure gauge according to claim 8, characterized in that: In step 202, step 302 and step 402, the third image recognition module (16) corresponding to the stop valve pressure gauge connector (17) connected to the pressure gauge to be calibrated (22) recognizes the indicated value of the pressure gauge to be calibrated (22); the controller controls the pressure source (15) in the pressure gauge to be calibrated unit to operate, pressurizes the pressure gauge to be calibrated (22) connected to the stop valve pressure gauge connector (17), performs point-by-point error detection according to the indicated value of the pressure gauge to be calibrated (22), and obtains the measurement error of each indicated value. If the measurement error of each indicated value meets the allowable error, the pressure gauge to be calibrated (22) is qualified; otherwise, the pressure gauge to be calibrated (22) is unqualified.

10. The method for calibrating a pressure gauge according to claim 8, characterized in that: In step 202, step 302 and step 402, when the pressure gauge to be inspected (22) fails the inspection, the second turnover robot (14) in the pressure gauge to be inspected unit removes the pressure gauge to be inspected (22) from the stop valve pressure gauge joint (17) and places it into the pressure gauge inspection failure zone (9) in the pressure gauge to be inspected unit.

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