A verification system for a turbine flowmeter and method thereof

Abstract

The application provides a kind of verification system of turbine flowmeter, including verifier and statistical module and the cloud module associated with statistical module;Verifier includes pipe body, is set on the verifier of the pipe body, and is set on the inner diameter detection device of the pipe body;The inner diameter detection device includes support, is set on the scraping device of the support, is set on the fixed disc of the support, is rotatably connected with the telescopic frame of the fixed disc, is rotatably connected with the articulated rod of the telescopic frame, is rotatably connected with the articulated rod one end of the rotating contact, is rotatably connected with the calibration assembly of the articulated rod other end, is rotatably connected with the support rod of the telescopic frame and is rotatably connected with the support assembly of the support rod end portion;The calibration assembly at least includes the laser of being arranged in the articulated rod end portion and the light shield for accepting the laser signal.

Description

Technical Field

[0001] This invention belongs to the field of worm gear flow meter calibration technology, and particularly relates to a calibration system and method for a turbine flow meter. Background Technology

[0002] Liquid flow meters are precision instruments manufactured based on the Karman vortex principle, used to measure the flow rate of liquids, gases, and vapors in sealed pipelines. Because the sensing element is sealed internally and has no moving parts, no on-site maintenance is required. They are widely used in metering management and process control in industries such as textile printing and dyeing, petroleum, chemical, metallurgy, pharmaceuticals, hot water, and fire protection. Therefore, calibration of liquid flow meters before commissioning is crucial. Traditional calibration devices typically only test individual flow meters, and the test results cannot be aggregated. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a calibration system and method for turbine flow meters.

[0004] A calibration system for a turbine flow meter includes a calibrator, a statistical module, and a cloud module associated with the statistical module. The calibrator includes a pipe body, an inspection device mounted on the pipe body, and an inner diameter detection device mounted on the pipe body. The inner diameter detection device includes a bracket, a scraping device mounted on the bracket, a fixed plate mounted on the bracket, a telescopic frame rotatably connected to the fixed plate, a hinge rod rotatably connected to the telescopic frame, a rotating contact at one end of the hinge rod, a calibration component at the other end of the hinge rod, a support rod mounted on the telescopic frame, and a support component at the end of the support rod. The calibration component includes at least a laser mounted at the end of the hinge rod and a light-shielding plate for receiving laser signals.

[0005] The present invention has the following beneficial effects

[0006] This invention can verify a large number of flow meters through a statistical module and a cloud module, and can statistically analyze the errors of the flow meters.

[0007] This invention, by setting up an inner diameter detection device, can detect the inner diameter of the tester before use, preventing serious errors in the tester itself from causing calibration problems in a large batch of flow meters.

[0008] The hinge rod will have an angular deviation after tilting, which can be greatly amplified by the light shield at the far end of the laser. Compared with the traditional inner diameter detection, the present invention can form a dynamic aperture signal on the light shield.

[0009] Optionally, the rotating contact extends vertically upward at one end of the articulated rod, and the verification assembly extends downward at the other end of the articulated rod

[0010] Optionally, the support assembly comprises a hollow tube arranged on the support rod, a jacking rod sleeved in the hollow tube, an air inlet pipe in communication with the hollow tube, an air inlet valve plate arranged on the air inlet pipe, a pressure indicating pipe in communication with the hollow tube, a valve block arranged in the pressure indicating pipe, a screw rod arranged at the end of the hollow tube, and an abutting block arranged at the end of the jacking rod; the air inlet valve pipe and the part of the hollow tube in communication with the air inlet pipe are both provided with a one-way valve; the pressure indicating pipe is a transparent glass structure.

[0011] Optionally, the verification assembly comprises a lower connecting rod arranged at the end of the articulated rod, a fixed block connected with the lower connecting rod, a laser arranged on the fixed block, a horizontal support rod arranged on the telescopic support, a hanging block arranged on the horizontal support rod, and a through hole arranged on the hanging block

[0012] Optionally, the bracket is further provided with a driving assembly, the driving assembly comprises a transmission screw rod arranged on the bracket, a first driving member connected with the transmission screw rod, a positioning rod arranged on one side of the transmission screw rod, a toothed rod arranged on the other side of the transmission screw rod, an inner gear ring sleeved on the fixed disc, wherein the telescopic support is arranged on the inner gear ring, the inner gear ring is rotationally connected with the fixed disc, the two sides of the fixed disc are provided with stop blocks limiting the inner gear ring, the positioning rod is fixed on the bracket, and the positioning rod is arranged on the fixed disc; the telescopic support comprises a rod body, a screw hole arranged on the rod body, a screw rod arranged in the rod body, a driving member connected with the screw rod, a guide rod arranged on the driving member, and a positioning block arranged on the rod body.

[0013] Optionally, the scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc.

[0014] Optionally, the scraping device comprises a support rod connected with the inclined block, an articulated rod connected with the support rod, and an abutting block arranged at the end of the support rod, wherein the abutting block and the articulated rod are provided with a plurality of abutting blocks, each abutting block can rotate relative to each other, the articulated rod and the support rod are slidably connected through an articulated seat, one end of the articulated rod is hinged with the articulated seat, and the other end is hinged with the abutting block

[0015] Optionally, the hinged seat comprises a sliding block, a hinge part arranged on the sliding block, a limiting assembly arranged on the sliding block, and a fixing assembly arranged on the sliding block.

[0016] A method for measuring a turbine flowmeter, using a turbine flowmeter calibration system, comprising the following steps

[0017] S1: the inner diameter detection device is balanced, each telescopic support on the fixed disc is adjusted to be vertical, then the support assembly is adjusted, and appropriate amount of air is injected into the hollow pipe; the hinged rod is adjusted to be horizontal, and whether the light emitted by the rear laser passes through the through hole on the hanging block can be judged by forming a light spot on the telescopic support.

[0018] S2: the verifier is calibrated, the pipe body of the verifier is arranged on the transmission screw, then the driving part is started, the guide rod body moves upward, the guide rotating contact and the inner diameter of the pipe body are in contact with each other, the first driving part is driven, the toothed rod rotates, then all rotating contacts rotate and horizontally move along the inner wall of the pipe body, and the light emitted by the front laser is received by the vertically arranged light shield. If the light spot displayed on the light shield is circular, it indicates that the entire inner diameter is circular, and if there is a non-circular track, there is an error. In actual use, the light shield can be set as a photosensitive element, and the data on the photosensitive element can be uploaded to the calculation center for analysis, so that the required data can be obtained.

[0019] S3: internal scraping, after the rotating contact and the inner wall of the pipe body abut, the air cylinder is started, the driving rod pushes the inclined blocks to move around, so that the abutting blocks and the inner wall of the steel pipe abut each other, the abutting blocks are mutually hinged, and the shape abutting with the inner wall of the steel pipe can be set, at this time, the number of abutting blocks can be increased or decreased to ensure that the abutting blocks on the four inclined blocks can abut with the inner diameter of each steel pipe.

[0020] After the abutting blocks and the inner wall of the steel pipe abut each other, the first driving part is started, and the abutting blocks remove the liquid remaining on the inner wall of the steel pipe.

[0021] S4: flowmeter detection: the flowmeter to be detected, the throttle valve and the verifier are connected with each other, the liquid passes through the flowmeter, the reading of the flowmeter is measured, the liquid flows into the verifier through the throttle valve, the accurate reading of the verifier is obtained, and then the two are compared to determine the error of the flowmeter.

[0022] S5: background data analysis, the error conditions of the flowmeters in the same batch are analyzed and processed through the statistical module and the cloud module.

[0023] In summary:

[0024] The application can check a large number of flow meters through the statistical module and the cloud module, and statistically and analyze the errors of the flow meters.

[0025] The inner diameter of the verifier can be detected before use, so that the verifier itself does not have a serious error, and a large number of flow meters do not have problems in calibration.

[0026] The angle deviation of the hinged rod after tilting can greatly amplify the deviation together with the light shield at the far end of the laser, compared with the traditional inner diameter detection, the application can form a dynamic aperture signal on the light shield. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a perspective view of the verifier in the application.

[0028] Figure 2 It is Figure 1 It is a perspective view of the inner diameter detection device in the application.

[0029] Figure 3 It is Figure 2 It is a perspective view of the middle part in the application.

[0030] Figure 4 It is Figure 2 It is a perspective view of the edge part in the application.

[0031] Figure 5 It is Figure 2 It is a sectional view of the inner tooth ring in the application.

[0032] Figure 6 It is Figure 5 It is an enlarged view of A in the application.

[0033] Figure 7 It is Figure 2 It is a sectional view of the telescopic frame part in the application.

[0034] Figure 8 It is Figure 7 It is an enlarged view of B in the application.

[0035] Figure 9 It is Figure 8 It is an enlarged view of the lower part in the application.

[0036] Figure 10 It is Figure 1 It is a perspective view of the supporting rod in the application.

[0037] Figure 11 It is Figure 10 It is an enlarged view of C in the application.

[0038] Figure 12 It is Figure 10 It is an elevation view in the application.

[0039] Figure 13 For Figure 12 Cross-sectional view at A-A.

[0040] Figure 14 For Figure 13 Enlarged view at D.

[0041] Figure 15 For Figure 12 Cross-sectional view at B-B.

[0042] Figure 16 For Figure 15 Enlarged view at E.

[0043] Figure 17 Flow chart of the present application in the test. DETAILED DESCRIPTION

[0044] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the present application embodiment will be described clearly and completely in combination with the drawings in the present application embodiment.

[0045] The liquid flowmeter is a precision instrument for measuring the flow of liquid, gas and steam in a sealed pipeline according to the Karman vortex principle. Since the detection element is sealed inside and has no movable parts, it does not require on-site maintenance and is widely used in the measurement management and process control of textile printing and dyeing, petroleum, chemical industry, metallurgy, pharmaceutical, hot spot and pharmaceutical fire-fighting industries. Therefore, the calibration of the liquid flowmeter before use is very important. The traditional calibration device can only test a single flowmeter, and the test results cannot be unified together.

[0046] The present application provides a vortex flowmeter measurement system, which can be used for the calibration and detection of the vortex flowmeter.

[0047] A turbine flowmeter verification system and method thereof, comprising a verifier 1a and a statistical module and a cloud module associated with the statistical module, wherein the verifier 1a can measure accurate flow. For this purpose, when in use, the flowmeter to be detected and the verifier 1a are connected in series, then the data obtained by the flowmeter and the verifier 1a are compared, the reading of the verifier 1a is used as the standard to correct the flowmeter, and the relevant data is transmitted to the statistical module and shared with the cloud module of the background, for this purpose, the present system can complete the calibration and data statistics of a large number of flowmeters, and complete the error statistics and analysis of a large number of flowmeters.

[0048] Further, for this purpose, in the system, the most important component is the checker 1a, which usually adopts a camera to capture the flow rate of the liquid in the checker 1a, and then combines the area of the checker 1a to calculate the corresponding flow rate. The whole of the existing checker 1a is usually a stainless steel pipe, so the flatness of the stainless steel pipe has a great influence on the accuracy of the checker 1a.

[0049] Meanwhile, in actual tests, the flowmeter does not have a big problem in the detection of conventional gas and liquid, but when detecting the flow of viscous liquid, the viscous liquid will give the impeller of the flowmeter greater axial pressure, so that the impeller of the flowmeter will be subjected to greater resistance during rotation, thereby the flowmeter needs to use viscous liquid as a test medium when calibrating, and then checks the flowmeter.

[0050] In this way, when the checker 1a is used, a large amount of liquid will be left on the inner wall, which will affect the accuracy of the checker 1a, and if not handled properly, it will also cause problems in the calibration process of the checker 1a.

[0051] Therefore, the checker 1a provided by the present application can check the inner diameter of the pipe body before use to ensure the roundness of the whole pipe body and scrape off the liquid left on the inner wall.

[0052] The checker 1a comprises a pipe body 11, a checker 12 arranged on the pipe body 11, and an inner diameter detection device arranged on the pipe body 11, wherein the checker 12 is a camera arranged on the pipe body 11 and used for checking the flow rate of liquid, and the inner diameter detection device is used for scraping off the liquid left on the pipe body 11 and detecting the inner diameter.

[0053] The inner diameter detection device comprises a support 2, a scraping device arranged on the support 2, a fixing disc 21 arranged on the support 2, an extension frame 22 rotationally connected with the fixing disc 21, a hinged rod 23 rotationally connected with the extension frame 22, a rotating contact 24 arranged at one end of the hinged rod 23, a checking assembly arranged at the other end of the hinged rod 23, a supporting rod 25 arranged on the extension frame 22, and a supporting assembly arranged at the end of the supporting rod 25.

[0054] The extension frame 22 is arranged in a circumferential array, the checking assembly at least comprises a laser emitter arranged at the end of the hinged rod 23, and the supporting assembly can support the supporting rod 25 to a horizontal state.

[0055] Thus, when the inner diameter of the steel pipe needs to be detected, the support 21 is arranged inside the steel pipe, and the rotating contact 24 is abutted against the inner wall of the steel pipe, and the articulated rod 23 is adjusted to be horizontal. If multiple telescopic supports 22 are arranged on the fixed disc 21, a circle formed by multiple laser emitters can be obtained at one end of the laser emission. When the fixed disc 21 is driven to rotate and move back and forth in the steel pipe, if the inner diameter of the steel pipe to be detected does not change, the light circle formed by the multiple lasers will not change. If the inner diameter of the steel pipe to be detected changes, the light circle formed by the lasers will also change.

[0056] Further, the change of the inner diameter of the steel pipe is judged by the articulated rod, and the change ratio of the inner diameter can be greatly amplified by the optical signal. In this way, a slight displacement change of one end of the rotating contact 24 will be obtained after the articulated rod 23 is pried and the laser is emitted.

[0057] Further, the rotating contact 24 vertically extends upwards at one end of the articulated rod 23, and the verification assembly extends downwards at the other end of the articulated rod 23. In this way, the inner diameter of the light circle formed by the laser on the verification assembly is much smaller than the inner diameter of the steel pipe. Thus, when the laser on the verification assembly changes, the change can be further reflected on the change of the diameter of the light circle.

[0058] Further, the support assembly comprises a hollow tube 251 arranged on the support rod 25, a jacking rod 252 sleeved in the hollow tube 251, an air inlet pipe 253 in communication with the hollow tube 251, an air inlet valve plate 254 arranged on the air inlet pipe 253, a pressure indicating pipe 255 in communication with the hollow tube 251, a valve block 256 arranged in the pressure indicating pipe 255, a screw rod 267 arranged at the end of the hollow tube 251, and an abutting block 2521 arranged at the end of the jacking rod 252.

[0059] The rotating contact 251 is arranged at the end of the jacking rod 252, and the abutting block 2521 is arranged at the end of the jacking rod 252. Thus, there is a gap between the jacking rod 252 and the hollow tube 251, and the screw rod 267 is screwed with the screw hole arranged at the end of the hollow tube 251. Thus, by adjusting the height of the screw rod 267, the height of the jacking rod 252 in the hollow tube 251 can be limited.

[0060] The air inlet valve pipe 254 and the part of the hollow tube 251 in communication with the air inlet pipe 253 are both provided with a one-way valve. Thus, the air inlet pipe 253 and the valve plate 254 form a common air pump structure, and air can be injected into the air inlet pipe 253 through the component to increase the gas pressure in the air inlet valve pipe 254.

[0061] Thus, the present application can increase the gas pressure in the air inlet pipe 254, and can resist the gravity of the articulated rod 23, so that the articulated rod 23 can be tilted after being adjusted to the horizontal state, and can be kept in the tilted state without external force, so that the gas pressure can support the top rod 252, and the sensitivity of the whole device can be effectively improved.

[0062] Further, the pressure indicating pipe 255 is a hollow pipe made of glass, and the pressure in the hollow pipe 251 can be determined by observing the height of the valve block 256 in the pressure indicating pipe 255. The screw rod 267 can finely adjust the highest height of the top rod 252.

[0063] Further, the hollow pipe 251 is further provided with an exhaust assembly for exhausting the gas in the hollow pipe 251, and the exhaust assembly includes a hole for balancing the gas pressure.

[0064] Further, the calibration assembly includes a lower connecting rod 231 arranged at the end of the articulated rod 23, a fixed block 232 connected to the lower connecting rod 231, a laser emitter 233 arranged on the fixed block 232, a horizontal support rod 234 arranged on the telescopic support 22, a hanging block 235 arranged on the horizontal support rod 234, and a through hole arranged on the hanging block 235.

[0065] Further, before use, it is necessary to calibrate whether the laser emitter 233 can emit corresponding laser horizontally. To this end, first, the telescopic support 22 needs to be adjusted to the vertical state, at this time, the rear laser emitter 233a arranged at the rear end of the fixed block 232 is turned on, and the laser emitted by the rear laser emitter 233a passes through the through hole arranged on the hanging block 235 to form a light spot on the telescopic support 22, which indicates that the telescopic support 22 is in the horizontal state, otherwise, the laser emitted by the rear laser emitter 233a can only irradiate the hanging block 235.

[0066] Further, the bracket 21 is further provided with a driving assembly for driving the fixed disc 21 to move back and forth and driving the telescopic support 22 to rotate.

[0067] Specifically, the driving assembly comprises a transmission screw 211 arranged on the support 2, a first driving member 2110 connected with the transmission screw 211, a positioning rod 212 arranged on one side of the transmission screw 211, a toothed rod 213 arranged on the other side of the transmission screw 211, an internal tooth ring 214 sleeved on the fixed disc 21, wherein the telescopic frame 22 is arranged on the internal tooth ring 214, the internal tooth ring 214 is rotationally connected with the fixed disc 21, the fixed disc 21 is provided with a stop block limiting the internal tooth ring 214 on both sides, the positioning rod 212 is fixed on the support 2 and passes through the fixed disc 21, thus the fixed disc 21 cannot rotate under the guidance of the positioning rod 212, and then the fixed disc 21 can be moved back and forth after the first driving member 2110 drives the transmission screw 211.

[0068] Further, one end of the toothed rod 213 is connected with the support 2, and the other end is provided with a rotating motor, the toothed rod 213 passes through the fixed disc 21, and the toothed rod 213 and the internal tooth ring 214 are in a meshing state. Thus, after the toothed rod 213 rotates, the internal tooth ring 214 can be driven to rotate.

[0069] Further, the telescopic frame 22 has telescopic ability, so that the telescopic frame 22 can adjust the rotating contact 24 to abut against the inner diameter of the steel pipe to be detected after the horizontal hinge rod 23.

[0070] The telescopic frame 22 comprises a rod body 221, a screw hole arranged on the rod body 221, a screw rod 222 passing through the rod body, a driving member 223 connected with the screw rod 222, a guide rod 224 arranged on the driving member 223, and a positioning block 225 arranged on the rod body 221, the guide rod 224 passes through the positioning block 225, so that the height of the rod body 221 can be adjusted after the screw rod 222 rotates, and of course in other embodiments, the driving member 223 can also be arranged as a manually adjustable structure.

[0071] In summary, the inner diameter detection device can effectively detect the change of the inner diameter, so that the diameter of the inner side of the steel pipe can be detected, to ensure the working precision.

[0072] And in order to reduce the influence of the viscous liquid on the subsequent detection result, a scraping device is further arranged, which can scrape the viscous liquid remaining on the inner wall.

[0073] Specifically, the scraping device comprises a sliding disc 31 arranged on the positioning rod 212, a push rod 32 connected with the sliding disc 31, a first spring 33 arranged on the sliding disc 31, an inclined block 34 connected with the first spring 33, a movable ring 35 arranged on the positioning rod 212, a push inclined block 36 connected with the movable ring 35, a driving rod 37 arranged on the movable ring 35, and a cylinder 38 connected with the driving rod 37, wherein the cylinder is fixedly arranged on the sliding disc 31. The inclined block 34 is provided with a scraping device, which can be attached to the inner wall of the steel pipe. When the push inclined block 36 moves towards the sliding disc 31 under the pushing of the driving rod 37, the inclined block 34 can be opened to be attached to the inner diameter of the steel pipe to be measured.

[0074] The scraping device comprises a support rod 41 connected with the inclined block 34, a hinged rod 42 connected with the support rod 41, and an abutting block 43 arranged at the end of the support rod 41, wherein the abutting block 43 and the hinged rod 42 are provided with a plurality of abutting blocks 43 connected end to end, each of which can rotate relative to each other, the hinged rod 42 and the support rod 41 are connected through a hinged seat, one end of the hinged rod 42 is hinged to the hinged seat, and the other end is hinged to the abutting block 43.

[0075] Therefore, after the support rod 41 is attached to the inner wall of the steel pipe by the hinged block 43, each hinged seat is fixed on the support rod 41 to prevent the support rod 41 from sliding relative to each other, so that each abutting block 43 is attached to the inner wall of the steel pipe. Therefore, each abutting block 43 is a metal sheet with elasticity.

[0076] Further, the connection relationship is as follows: the support rod 41 is provided with a guide groove 411, the guide groove 411 is provided with a guide block 412, the guide block 412 is provided with a dovetail groove 413, and the hinged seat is slidingly arranged in the guide groove 411.

[0077] Specifically, the hinged seat comprises a sliding block 51, a hinged part 52 arranged on the sliding block 51, a limiting assembly arranged on the sliding block 51, and a fixing assembly arranged on the sliding block 51.

[0078] The sliding block 51 is provided with a longitudinal slot 511, the fixing assembly is arranged in the longitudinal slot, and the fixing assembly comprises two push tenons 512 arranged in the longitudinal slot 511, a second spring 513 for connecting the two push tenons 512, and a pressing rod 514 arranged in the longitudinal slot 511.

[0079] The two clamping blocks 510 with intervals are arranged on the sliding block 51, and the longitudinal grooves are formed between the two clamping blocks 510 with intervals, and the groove 510 is arranged on the clamping block 510 and clamped on the wall of the dovetail groove 413 of the guiding block 412, so that the fixed assembly can be arranged at the bottom end of the dovetail groove, and when the two pushing tenons 512 are spread outward, the two pushing tenons 512 are clamped into the groove at the bottom end of the dovetail groove.

[0080] Therefore, it can be predicted that in the normal state, the two clamping blocks 510 are close to the middle, at this time, the sliding block 51 can be guided to be arranged on the guiding block 412, and then the pressing rod 514 is pressed downward, and the hinge seat can be fixed by the spread mode of the two fixed tenons 512.

[0081] Further, the limiting assembly comprises a first pushing inclined block 521 slidably arranged on the longitudinal groove 511, a second pushing inclined block 522 slidably arranged on the sliding block 51, a third spring 523 connected with the second pushing inclined block 522, a locking plate 524 intersecting with the sliding block 51 and a fourth spring 525 connected with the locking plate 524.

[0082] The lower end of the first pushing inclined block 521 is provided with a first inclined surface 5211, and the upper side of the pressing rod 514 is provided with a second pushing inclined surface 5141, so that the first pressing rod 514 can press the pressing rod 514 downward in the sliding process, and at the same time, the second pushing inclined block 522 is pushed away, at this time, the second inclined block 522 and the inner wall of the guiding groove 411 abut against each other, and the hinge seat can be fixed.

[0083] Further, the first hook portion 5212 is arranged on the first pushing inclined block 521, and the second hook portion 5241 is arranged on the locking plate 524, so that the locking plate 524 can be fixed on the pressing plate.

[0084] The application also provides a turbine flowmeter identification method, which mainly uses the above-mentioned identification system to complete the inspection of a large number of turbine flowmeters.

[0085] The specific steps are as follows:

[0086] S1: The inner diameter detection device is balanced, each telescopic support 22 on the fixed disc 21 is adjusted to be in a vertical state, then the supporting assembly is adjusted, and appropriate amount of air is injected into the hollow pipe 251; the hinge rod 23 is adjusted to be in a horizontal state, whether the light emitted by the laser 233a passes through the through hole on the suspension block 235 can be judged to form a light spot on the telescopic support 22.

[0087] S2: Verifier calibration. The tube of calibrator 1a is threaded onto the transmission screw 211. Then, the drive unit 223 is activated. At this time, the guide rod 221 moves upward, guiding the rotating contact 24 to contact the inner diameter of the tube 11. The first drive unit 2110 is then driven, simultaneously causing the rack 213 to rotate. All rotating contacts 24 rotate along the inner wall of the tube while moving horizontally. The laser emitted by the front laser 233b is then collected by a vertically placed light-shielding plate. If the light spot displayed on the light-shielding plate is circular, it indicates that the entire inner diameter is circular. If a non-circular trajectory exists, there is an error on the surface. In practical use, the light-shielding plate can be set as a photosensitive element, and the data from the photosensitive element can be uploaded to a computing center for analysis to obtain the required data.

[0088] S3: Internal scraping. After the rotating contact 24 abuts against the inner wall of the pipe, the cylinder is activated. The drive rod 37 will push the inclined block 34 to move in all directions, so that the abutting block 43 and the inner wall of the steel pipe are in contact with each other. The abutting block 43 is composed of multiple hinges. Thus, it can be set to fit against the inner wall of the steel pipe. At this time, the number of abutting blocks 43 can be increased or decreased to ensure that the abutting blocks 43 on the four inclined blocks 43 can fit against the inner diameter of each steel pipe.

[0089] The specific method of this part is as follows: First, let the abutment block 43 and the inner wall of the cylinder fit together. At this time, one end of the hinge rod 42 is hinged to the abutment block, and the other end will be hinged to the hinge seat. The hinge seat will slide to a relatively fixed position on the side of the support rod 41.

[0090] The hinge seat is fixed to the side of the support rod 41 by means of the fixing component and the limiting component;

[0091] Based on the inner diameter of the steel pipe 43 and the contact situation, an appropriate contact block 43 is selected. The contact blocks 43 are detachable, and the hinge seat and support rod 42 are also detachably connected, thus enabling this function.

[0092] After the abutting block and the inner wall of the steel pipe come into contact with each other, the first driving component 2110 is activated. At this time, the abutting block 43 will remove the liquid remaining on the inner wall of the steel pipe.

[0093] S4: Flow meter test: Connect the flow meter to be tested, the throttle valve and the calibrator 1a to each other. After the liquid passes through the flow meter, the flow meter reading is measured. After passing through the throttle valve and flowing into the calibrator 1a, the accurate reading is obtained through the calibrator 1a. Then the two are compared to determine the error of the flow meter.

[0094] S5: Back-end data analysis, through the statistics module and cloud module, analyzes and processes the error of a uniform batch of flow meters.

[0095] Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

Claims

1. A verification system for a turbine flowmeter, the verification system comprising: The application relates to a steel pipe inspection device, which comprises a checker and a statistical module and a cloud module associated with the statistical module; the checker comprises a pipe body, a detector arranged on the pipe body and an inner diameter detection device arranged on the pipe body; the inner diameter detection device comprises a support, a scraping device arranged on the support, a fixed disc arranged on the support, an extension frame rotatably connected with the fixed disc, a hinged rod rotatably connected with the extension frame, a rotating contact arranged at one end of the hinged rod, a checking assembly arranged at the other end of the hinged rod, a supporting rod arranged on the extension frame and a supporting assembly arranged at the end of the supporting rod, the supporting assembly can support the supporting rod to a horizontal state; the checking assembly at least comprises a laser arranged at the end of the hinged rod and a light shield plate for receiving the laser signal. The rotating contact vertically extends upwards at one end of the hinged rod, and the checking assembly extends downwards at the other end of the hinged rod; the checking assembly comprises a lower connecting rod arranged at the end of the hinged rod, a fixed block connected with the lower connecting rod and a laser arranged on the fixed block; the change of the inner diameter of the steel pipe is judged by arranging the hinged rod, the change proportion of the inner diameter can be greatly amplified by an optical signal, the inner diameter of the light circle formed by the laser on the checking assembly is much smaller than the inner diameter of the steel pipe, so when the laser on the checking assembly changes, the change can be further reflected on the change of the diameter of the light circle.

2. A system for calibrating a turbine flow meter according to claim 1, wherein, The supporting assembly comprises a hollow pipe arranged on the supporting rod, a jacking rod sleeved in the hollow pipe, an air inlet pipe communicated with the hollow pipe, an air inlet valve plate arranged on the air inlet pipe, a pressure indicating pipe communicated with the hollow pipe, a valve block arranged in the pressure indicating pipe, a screw rod arranged at the end of the hollow pipe and an abutting block arranged at the end of the jacking rod; the air inlet valve plate and the part of the hollow pipe communicated with the air inlet pipe are provided with one-way valves; the pressure indicating pipe is a transparent glass structure.

3. A system for calibrating a turbine flow meter according to claim 1, wherein, The checking assembly further comprises a horizontal supporting rod arranged on the extension frame, a hanging block arranged on the horizontal supporting rod and a through hole arranged on the hanging block.

4. A verification system for a turbine flow meter according to claim 3, wherein, The support is further provided with a driving assembly, the driving assembly comprises a transmission screw rod arranged on the support, a first driving member connected with the transmission screw rod, a positioning rod arranged on one side of the transmission screw rod, a toothed rod arranged on the other side of the transmission screw rod, an inner tooth ring sleeved on the fixed disc, wherein the extension frame is arranged on the inner tooth ring, the inner tooth ring is rotatably connected with the fixed disc, the two sides of the fixed disc are provided with stop blocks for limiting the inner tooth ring, the positioning rod is fixed on the support and the positioning rod is arranged on the fixed disc; the extension frame comprises a rod body, a screw hole arranged on the rod body, a screw rod arranged in the rod body, a driving member connected with the screw rod, a guide rod arranged on the driving member and a positioning block arranged on the rod body.

5. A verification system for a turbine flow meter according to claim 4, wherein, The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc.

6. A verification system for a turbine flow meter according to claim 5, wherein, The scraping device comprises a support rod connected with the inclined block, a hinged rod connected with the support rod, and abutting blocks arranged at the ends of the support rod.

7. A verification system for a turbine flow meter according to claim 6, wherein, The hinged seat comprises a sliding block, a hinged part arranged on the sliding block, a limiting assembly arranged on the sliding block, and a fixing assembly arranged on the sliding block.

8. A method of determining a turbine flowmeter, using a turbine flowmeter verification system as claimed in claim 7, characterized in that, The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc.

9. The method of claim 8, wherein, The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod connected with the sliding disc, a first spring arranged on the sliding disc, an inclined block connected with the first spring, a movable ring arranged on the positioning rod, a push inclined block connected with the movable ring, a driving rod arranged on the movable ring, and a cylinder connected with the driving rod, wherein the cylinder is fixedly arranged on the sliding disc. The scraping device comprises a sliding disc arranged on the positioning rod, a push rod

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