A laser measuring device for orifice plate flowmeter geometry

Abstract

The application discloses a kind of orifice plate flowmeter geometric size laser measuring device, belong to orifice plate flowmeter production technical field;It includes workbench, the clamping assembly is installed on the upper side of the workbench, the measuring assembly is installed on the upper side of the workbench, the measuring assembly includes two laser measuring devices, the slide rail is fixedly connected on the upper side of the workbench, the moving plate is slidably connected in the slide rail, the rotating circular plate is rotatably connected to the side wall of the moving plate by the rotating rod, and the side wall of the rotating circular plate is fixedly connected with the connecting block.The application fixes the orifice plate flowmeter by the clamping assembly, then adjusts the position of the laser measuring device, and then measures the inside and outside diameters of the orifice plate flowmeter, which is simple to operate. When detecting, the laser measuring device rotates back and forth, not just detecting the linear distance of the orifice plate flowmeter, the detection range is wider, and the detection result is more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of orifice plate flowmeter production, and particularly relates to a laser measuring device for the geometric size of an orifice plate flowmeter. BACKGROUND

[0002] The orifice plate flowmeter is a differential pressure flowmeter, is a high-range-ratio differential pressure flow device composed of a standard orifice plate and a multi-parameter differential pressure transmitter (or a differential pressure transmitter, a temperature transmitter and a pressure transmitter), and can measure the flow of gas, steam, liquid and the like. In the production process of the orifice plate flowmeter, the geometric size coefficient of the orifice plate can affect the heat conduction efficiency of the system, and the geometric size coefficient of the bracket affects the stability of the system. In addition, the number of orifice plates also affects the flow characteristics, and the geometric size coefficient of the bracket mounting piece affects the mounting process, thereby affecting the overall performance of the system. Therefore, the geometric size of the orifice plate and the bracket needs to be measured, and laser measurement is one of the most widely used measurement methods.

[0003] In the geometric size measurement operation of the orifice plate flowmeter, the orifice plate flowmeter is placed on the workbench, the laser emitter is started and moved back and forth, and the corresponding measurement operation can be performed. The overall operation is simple, but in the actual measurement operation, the emission angle of the laser emitter is in a fixed state, the position of the orifice plate flowmeter needs to be adjusted, and the measurement of the geometric size of the orifice plate flowmeter can be completed. In addition, the laser emitter is in a fixed state during measurement, and the detection range of the laser emitter is generally small. During detection, repeated detection needs to be performed multiple times, which is time-consuming and laborious. In addition, during detection, the cleanliness of the measurement surface of the orifice plate flowmeter needs to be maintained, and manual wiping needs to be performed multiple times, which is a large amount of work. Therefore, a laser measuring device for the geometric size of an orifice plate flowmeter is provided. SUMMARY

[0004] The present application relates to the technical field of orifice plate flowmeter production, and particularly relates to a laser measuring device for the geometric size of an orifice plate flowmeter.

[0005] The present application adopts the following technical solutions:

[0006] The application discloses a kind of orifice plate flowmeter geometry laser measuring device, including workbench, the upper side of the workbench is equipped with clamping component, the upper side of the workbench is equipped with measuring component, the measuring component includes two laser measuring devices, the upper side of the workbench is fixedly connected with slide rail, the slide rail is slidably connected with moving plate inside, the side wall of the moving plate is rotatably connected with rotating round plate by rotating lever, the side wall of the rotating round plate is fixedly connected with connecting block, the side wall of the connecting block is rotatably penetrated with two-way screw rod, the outer two sides of the two-way screw rod are threadedly connected with threaded plate, the side wall of the connecting block is symmetrically fixedly connected with two right angle rods, two the right angle rod and threaded plate are slidably connected, the end of the threaded plate is rotatably connected with rotating plate, the laser measuring device and rotating plate are fixedly connected, the upper side of the workbench is equipped with rotating component of control threaded plate rotation.

[0007] Preferably, the rotating component includes two clamping plates fixedly installed on the upper side of the workbench, the side wall of the two clamping plates is provided with a wave groove, the side wall of the moving plate is slidably connected with a moving rod, the lower side of the moving rod is fixedly connected with a connecting rod, the two sides of the connecting rod are fixedly connected with slide rods, one end of the slide rod extends into the wave groove and is slidably connected with the wave groove, the upper side of the moving rod is fixedly connected with a control plate, the side wall of the rotating round plate is fixedly connected with a control rod, and a torsion spring is fixedly connected between the rotating round plate and the moving plate.

[0008] Preferably, the outer side of the rotating plate is equipped with a friction cleaning assembly, the friction cleaning assembly includes two sliding plates slidably penetrating the rotating plate, the outer side of the two sliding plates is slidably connected with a cleaning plate, a plurality of first springs are fixedly connected between the cleaning plate and the sliding plate, a connecting plate is also fixedly connected between the two sliding plates, a plurality of second springs are fixedly connected between the connecting plate and the rotating plate, a plurality of round rods are fixedly connected to the lower side of the connecting plate, a moving frame is slidably connected to the outer side of the threaded plate, the side wall of the moving frame is symmetrically fixedly connected with two clamping rods, a plurality of triangular plates are also fixedly connected between the two clamping rods, and a positioning rod is fixedly connected to the upper side of the moving plate.

[0009] Preferably, the outer side of the rotating plate is equipped with a knocking assembly, the knocking assembly includes a through groove opened in the side wall of the two sliding plates, the outer side of the rotating plate is fixedly connected with two fixed frames, the fixed frame and the through groove are slidably connected with an inclined plate, the side wall of the inclined plate is fixedly connected with a knocking rod through a fixed block, the outer side of the knocking rod is slidably connected with a knocking cylinder, and a third spring is fixedly connected between the knocking cylinder and the knocking rod.

[0010] Preferably, the clamping component includes a hydraulic rod fixedly installed on the upper side of the workbench, the output end of the hydraulic rod is fixedly connected with a frame, the outer side of the frame is slidably connected with a plurality of clamps, and the lower side of each clamp is threadedly connected with a threaded rod.

[0011] Preferably, the outer side of each said clamp is fixedly connected with an anti-skid rubber pad.

[0012] Preferably, two installation holes are symmetrically formed on the upper side of the rotating plate, and a bolt is threadedly connected with the side wall of the threaded plate, and one end of the bolt extends into the installation hole.

[0013] The present application has the following advantages:

[0014] 1. First, the clamping assembly is used to fix the orifice plate flowmeter, then the position of the laser measuring device is adjusted, and then the inner and outer diameters of the orifice plate flowmeter are measured. The operation is simple, and when detecting, the laser measuring device rotates back and forth, which is not a single linear distance detection of the orifice plate flowmeter, so the detection range is wider and the detection result is more accurate.

[0015] 2. Secondly, when detecting, the cleaning plate can form a friction cleaning effect on the orifice plate flowmeter, keep the cleanliness of the measurement surface of the orifice plate flowmeter, and then keep the accuracy of the measurement result. At the same time, under the restriction of the sliding plate and the cleaning plate, the laser measuring device is located between the sliding plate and the cleaning plate, which can also reduce the adverse effects of the external environment on the laser, achieving multiple effects at once.

[0016] 3. Finally, when detecting with the laser measuring device, the detection effect on the surface of the orifice plate flowmeter can be completed according to the laser intensity received by the laser receiver. Through the knocking of the knocking drum, if the orifice plate flowmeter has defects, the defects can be enlarged through the knocking of the knocking drum, and then the detection effect of the laser receiver can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of a laser measuring device for geometric size of an orifice plate flowmeter proposed by the present application;

[0018] Figure 2 It is a structure schematic view of a clamping assembly in a laser measuring device for geometric size of an orifice plate flowmeter proposed by the present application;

[0019] Figure 3 It is a structure schematic view of a measuring assembly in a laser measuring device for geometric size of an orifice plate flowmeter proposed by the present application;

[0020] Figure 4 It is a connection schematic view of a moving plate and a threaded plate in a laser measuring device for geometric size of an orifice plate flowmeter proposed by the present application;

[0021] Figure 5 It is a top view connection schematic view of a moving plate and a rotating circular plate in a laser measuring device for geometric size of an orifice plate flowmeter proposed by the present application;

[0022] Figure 6 for Figure 4 Enlarged view of the structure at point A in the middle;

[0023] Figure 7 This is a schematic diagram showing the connection between the threaded plate and the rotating plate in a laser measurement device for the geometric dimensions of an orifice flowmeter proposed in this invention.

[0024] Figure 8 This is a schematic diagram showing the connection between the rotating plate and the laser measuring device in a laser measuring device for measuring the geometric dimensions of an orifice flowmeter proposed in this invention.

[0025] Figure 9 This is a schematic diagram showing the connection between the threaded plate and the moving frame in a laser measurement device for the geometric dimensions of an orifice flow meter proposed in this invention.

[0026] Figure 10 This is a schematic diagram showing the connection between the sliding plate and the connecting plate in a laser measurement device for the geometric dimensions of an orifice flow meter proposed in this invention.

[0027] Figure 11 This is a schematic diagram of the connection of the striking component in a laser measurement device for the geometric dimensions of an orifice flowmeter proposed in this invention;

[0028] Figure 12 This is a schematic diagram showing the unfolded connection of the striking rod and striking cylinder in a laser measurement device for the geometric dimensions of an orifice flowmeter proposed in this invention.

[0029] In the diagram: 1. Workbench, 2. Fixture, 3. Laser measuring instrument, 4. Hydraulic rod, 5. Frame, 6. Rotating circular plate, 7. Torsion spring, 8. Right angle rod, 9. Bidirectional screw, 10. Positioning rod, 11. Threaded plate, 12. Rotating plate, 13. Moving plate, 14. Moving rod, 15. Control plate, 16. Control rod, 17. Slide rail, 18. Clamping plate, 19. Wave groove, 20. Connecting block, 21. Connecting rod, 22. Slide rod, 23. Mounting hole, 24. Bolt, 25. Slide plate, 26. Cleaning plate, 27. Moving frame, 28. Clamping rod, 29. Triangular plate, 30. First spring, 31. Through groove, 32. Connecting plate, 33. Second spring, 34. Round rod, 35. Fixed frame, 36. Inclined plate, 37. Striking rod, 38. Third spring, 39. Striking cylinder. Detailed Implementation

[0030] See Figures 1-12 A laser measurement device for the geometric dimensions of an orifice plate flowmeter includes a worktable 1, on the upper side of which a clamping assembly is mounted, such as... Figure 2The clamping assembly comprises a hydraulic rod 4 fixedly installed on the upper side of the workbench 1, the output end of the hydraulic rod 4 is fixedly connected with a frame 5, the outer side of the frame 5 is slidably connected with a plurality of clamps 2, the outer side of each clamp 2 is provided with a hydraulic clamp jaw, the lower side of each clamp 2 is threadedly connected with a threaded rod, and the outer side of each clamp 2 is fixedly connected with an anti-skid rubber pad, so that the friction of the clamp 2 is improved, and the clamping and fixing of the orifice plate flowmeter to be measured can be better formed. When the geometric size of the orifice plate flowmeter needs to be measured, the clamp 2 is moved along the frame 5 until the position of the clamp 2 meets the working requirement, the threaded rod is rotated until the threaded rod abuts against the frame 5, and then the position adjustment and fixing operation of the clamp 2 are completed. Then the orifice plate flowmeter is placed on the clamp 2, the orifice plate flowmeter is clamped and fixed by the hydraulic clamp jaw, and finally the installation and fixing effect of the orifice plate flowmeter is achieved. The above is prior art;

[0031] As Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 The upper side of the workbench 1 is provided with a measuring assembly, the measuring assembly comprises two laser measuring devices 3, the upper side of the workbench 1 is fixedly connected with a sliding rail 17, the sliding rail 17 is slidably connected with a moving plate 13, the side wall of the moving plate 13 is rotatably connected with a rotating circular plate 6 through a rotating rod, the side wall of the rotating circular plate 6 is fixedly connected with a connecting block 20, the side wall of the connecting block 20 is rotatably penetrated by a bidirectional screw rod 9, the outer two sides of the bidirectional screw rod 9 are threadedly connected with a threaded plate 11, the side wall of the connecting block 20 is fixedly connected with two right-angle rods 8 in a symmetrical manner, the two right-angle rods 8 and the threaded plate 11 are slidably connected, the end of the threaded plate 11 is rotatably connected with a rotating plate 12, the laser measuring device 3 and the rotating plate 12 are fixedly connected, and the upper side of the workbench 1 is provided with a rotating assembly for controlling the rotation of the threaded plate 11. The rotating assembly comprises two clamping plates 18 fixedly installed on the upper side of the workbench 1, the side wall of each clamping plate 18 is provided with a wave groove 19, the side wall of the moving plate 13 is slidably connected with a moving rod 14, the lower side of the moving rod 14 is fixedly connected with a connecting rod 21, the two sides of the connecting rod 21 are fixedly connected with a sliding rod 22, one end of the sliding rod 22 extends to and is slidably connected with the wave groove 19, the upper side of the moving rod 14 is fixedly connected with a control plate 15, the side wall of the rotating circular plate 6 is fixedly connected with a control rod 16, the rotating circular plate 6 and the moving plate 13 are fixedly connected with a torsion spring 7, the upper side of the rotating plate 12 is symmetrically provided with two mounting holes 23, the side wall of the threaded plate 11 is threadedly connected with a bolt 24, and one end of the bolt 24 extends into the mounting hole 23;

[0032] Firstly, the laser measurer 3 comprises a laser emitter and a laser receiver, when laser measurement is needed, the laser emitter emits laser to the object to be detected, when the laser and the object to be detected meet, the laser changes the moving track due to the refraction of light, and then shoots to the laser receiver, the laser receiver obtains the geometric size of the object to be detected according to the time of receiving the laser and the intensity of the laser, and then obtains the geometric size of the object to be detected according to the calculation processing, which are all prior art, secondly, before the laser measurement operation, when the outer diameter of the orifice plate flowmeter needs to be detected, the rotating plate 12 is rotated first, the rotating plate 12 drives the laser measurer 3 to rotate, until the laser measurer 3 is directed inward (i.e. the positions of the laser measurer 3 and the threaded plate 11 are as shown in Figure 7 the drawing), then the bidirectional screw rod 9 is rotated, because the screw threads on both sides of the bidirectional screw rod 9 are opposite in rotation direction, and because the threaded plate 11 and the right-angle rod 8 are in sliding connection, rotating the bidirectional screw rod 9 drives the threaded plate 11 to move away from the other, until the distance between the two laser measurers 3 is slightly larger than the outer diameter of the orifice plate flowmeter, then the hydraulic rod 4 is started, the hydraulic rod 4 drives the orifice plate flowmeter to move upward, until the center of the orifice plate flowmeter is located at the midpoint of the two laser measurers 3, then the laser measurer 3 is started, the moving plate 13 is pulled along the slide rail 17, the moving plate 13 drives the bidirectional screw rod 9 to move through the rotating disc 6 and the connecting block 20, the bidirectional screw rod 9 drives the rotating plate 12 to move through the threaded plate 11, the rotating plate 12 drives the laser measurer 3 to move, until the orifice plate flowmeter to be detected passes through the two laser measurers 3, according to the data of the laser measurer 3, the detection operation of the outer diameter of the orifice plate flowmeter is completed, when the inner hole diameter of the orifice plate flowmeter needs to be detected, the above operation is repeated, the laser measurer 3 is directed outward, then the distance between the two laser measurers 3 is less than the inner hole diameter of the orifice plate flowmeter, the laser measurer 3 is started again, and the moving plate 13 is pulled along the slide rail 17, so that the orifice plate flowmeter passes through the two laser measurers 3, and the detection operation of the inner hole diameter of the orifice plate flowmeter is completed;

[0033] In the above detection process, in the process of moving the moving plate 13, under the action of the slide rod 22 and the wave groove 19, the moving rod 14 moving with the moving plate 13 moves up and down relative to the moving plate 13, the moving rod 14 drives the control plate 15 to move up and down, the control plate 15 and the control rod 16 abutting will cause the rotating circular plate 6 to rotate, and the rotating circular plate 6 rotates back and forth, the rotating circular plate 6 drives the bidirectional screw rod 9 to rotate back and forth through the connecting block 20, the bidirectional screw rod 9 drives the rotating plate 12 to rotate back and forth through the threaded plate 11, the rotating plate 12 drives the laser measuring device 3 to rotate back and forth, so that the measurement position of the laser measuring device 3 is not fixed during measurement, and then if the data of the laser measuring device 3 changes during detection, it indicates that the surface of the orifice plate flowmeter has certain defects, that is, the outer or inner hole of the orifice plate flowmeter is not a standard circle, thereby forming the detection effect of the orifice plate flowmeter.

[0034] As Figure 8 , Figure 9 , Figure 10 The outer side of the rotating plate 12 is provided with a friction cleaning assembly, the friction cleaning assembly comprises two sliding plates 25 slidingly penetrating the rotating plate 12, the outer side of the two sliding plates 25 is slidingly connected with a cleaning plate 26, a plurality of first springs 30 are fixedly connected between the cleaning plate 26 and the sliding plate 25, a connecting plate 32 is also fixedly connected between the two sliding plates 25, a plurality of second springs 33 are fixedly connected between the connecting plate 32 and the rotating plate 12, a plurality of circular rods 34 are fixedly connected to the lower side of the connecting plate 32, a moving frame 27 is slidingly connected to the outer side of the threaded plate 11, two clamping rods 28 are fixedly connected to the side wall of the moving frame 27, a plurality of triangular plates 29 are also fixedly connected between the two clamping rods 28, and a positioning rod 10 is fixedly connected to the upper side of the moving plate 13.

[0035] First, the outer side of the cleaning plate 26 is fixedly provided with a cleaning towel, after adjusting the distance between the two laser measuring devices 3, the orifice plate flowmeter should abut against the cleaning plate 26 when passing through the two laser measuring devices 3, and the first spring 30 is in a compressed state, then when the rotating circular plate 6 rotates relative to the moving plate 13 during the measurement operation, since there is a notch on the upper side of the moving frame 27, when the positioning rod 10 abuts against the notch, the rotating circular plate 6 is driven to rotate relative to the moving plate 13, and the rotating circular plate 6 rotates back and forth, the bidirectional screw rod 9 rotates back and forth through the connecting block 20, the threaded plate 11 drives the rotating plate 12 to rotate back and forth, and the laser measuring device 3 rotates back and forth, so that the measurement position of the laser measuring device 3 is not fixed during measurement, and then if the data of the laser measuring device 3 changes during detection, it indicates that the surface of the orifice plate flowmeter has certain defects, that is, the outer or inner hole of the orifice plate flowmeter is not a standard circle, thereby forming the detection effect of the orifice plate flowmeter. Figure 4 and Figure 9Based on the direction, the moving frame 27 moves to the right relative to the threaded plate 11. The moving frame 27 drives the clamping rod 28 and the triangular plate 29 to move to the right as a whole. The triangular plate 29 and the round rod 34 abut against each other, causing the round rod 34 to move upward relative to the rotating plate 12. The round rod 34 drives the connecting plate 32 to move upward. While the connecting plate 32 compresses the second spring 33, it drives the sliding plate 25 and the cleaning plate 26 to move upward. When the positioning rod 10 and the notch are disconnected, under the action of the second spring 33, the cleaning plate 26 and the sliding plate 25 return to their original position relative to the rotating plate 12. As a result, during the detection process, the cleaning plate 26 will form a friction cleaning effect on the orifice plate flowmeter, keeping the measuring surface of the orifice plate flowmeter clean and thus maintaining the accuracy of the measurement results. At the same time, under the restriction of the sliding plate 25 and the cleaning plate 26, the laser measuring device 3 is located between the sliding plate 25 and the cleaning plate 26, which can also reduce the adverse effects of the external environment on the laser, achieving multiple benefits.

[0036] like Figure 11 , Figure 12 A striking assembly is installed on the outer side of the rotating plate 12. The striking assembly includes through slots 31 on the side walls of the two slide plates 25. Two fixed frames 35 are fixedly connected to the outer side of the rotating plate 12. The fixed frames 35 and through slots 31 are slidably connected to an inclined plate 36. A striking rod 37 is fixedly connected to the side wall of the inclined plate 36 through a fixed block. A striking cylinder 39 is slidably connected to the outer side of the striking rod 37. A third spring 38 is fixedly connected between the striking cylinder 39 and the striking rod 37.

[0037] First of all, with Figure 11 Based on the direction, the inclined plate 36 and the through groove 31 are connected in a sliding manner. Therefore, during the up-and-down movement of the slide plate 25 and the cleaning plate 26, under the constraint of the fixed frame 35, the inclined plate 36 will move relative to the slide plate 25. When the slide plate 25 and the cleaning plate 26 move upward, the slide plate 25 drives the inclined plate 36 to move upward. Under the constraint of the fixed frame 35, the inclined plate 36 will move backward relative to the slide plate 25. The inclined plate 36 drives the striking rod 37 and the striking cylinder 39 to move backward through the fixed block. When the slide plate 25 and the cleaning plate 26 move downwards, the striking rod 37 and the striking cylinder 39 will move forward. The striking cylinder 39 will come into contact with the orifice plate flow meter, creating a striking effect on the orifice plate flow meter. When using the laser measuring device 3 for detection, the surface of the orifice plate flow meter can be inspected based on the laser intensity received by the laser receiver. The striking cylinder 39 can also amplify defects in the orifice plate flow meter, thereby improving the detection effect of the laser receiver.

[0038] When the geometric size of the orifice plate flowmeter needs to be measured, the clamp 2 is moved along the frame 5 until the clamp 2 is in the required position, the threaded rod is rotated until the threaded rod abuts against the frame 5, and the position of the clamp 2 is adjusted and fixed, then the orifice plate flowmeter is placed on the clamp 2, the orifice plate flowmeter is clamped and fixed by the hydraulic clamping jaw, and the installation and fixing of the orifice plate flowmeter are completed, which are all prior art;

[0039] Before the laser measurement is performed, when the external diameter of the orifice plate flowmeter needs to be detected, the rotating plate 12 is rotated to rotate the laser measurer 3 until the laser measurer 3 faces inward (i.e., the positions of the laser measurer 3 and the threaded plate 11 are as shown in Figure 7 Then the bidirectional screw rod 9 is rotated, because the threads on the two sides of the bidirectional screw rod 9 are opposite in rotation direction, and because the threaded plate 11 and the right-angle rod 8 are in sliding connection, the threaded plate 11 is moved away from the other side until the distance between the two laser measurers 3 is slightly greater than the external diameter of the orifice plate flowmeter, then the hydraulic rod 4 is started to move the orifice plate flowmeter upward until the center of the orifice plate flowmeter is located at the midpoint of the two laser measurers 3, then the laser measurer 3 is started, the moving plate 13 is pulled along the sliding rail 17, the moving plate 13 moves the bidirectional screw rod 9 through the rotating plate 6 and the connecting block 20, the bidirectional screw rod 9 moves the rotating plate 12 through the threaded plate 11, the rotating plate 12 moves the laser measurer 3, until the orifice plate flowmeter to be detected passes through the two laser measurers 3, according to the data of the laser measurer 3, the external diameter detection of the orifice plate flowmeter is completed, when the inner hole diameter of the orifice plate flowmeter needs to be detected, the above operation is repeated, the laser measurer 3 faces outward, the distance between the two laser measurers 3 is less than the inner hole diameter of the orifice plate flowmeter, the laser measurer 3 is started again, and the moving plate 13 is pulled along the sliding rail 17, so that the orifice plate flowmeter passes through the two laser measurers 3, and the inner hole diameter detection of the orifice plate flowmeter is completed;

[0040] In the above detection process, in the process of moving the moving plate 13, under the action of the slide rod 22 and the wave groove 19, the moving rod 14 moving with the moving plate 13 moves up and down relative to the moving plate 13, the moving rod 14 drives the control plate 15 to move up and down, the control plate 15 and the control rod 16 abutting will cause the rotating circular plate 6 to rotate, and the rotating circular plate 6 rotates back and forth, the rotating circular plate 6 drives the bidirectional screw rod 9 to rotate back and forth through the connecting block 20, the bidirectional screw rod 9 drives the rotating plate 12 to rotate back and forth through the threaded plate 11, and the rotating plate 12 drives the laser measuring device 3 to rotate back and forth, so that the measurement position of the laser measuring device 3 is not fixed during measurement, and thus if the data of the laser measuring device 3 changes during detection, it indicates that the surface of the orifice plate flowmeter has defects, that is, the outer or inner hole of the orifice plate flowmeter is not a standard circle, and thus the detection effect of the orifice plate flowmeter can be formed.

[0041] After adjusting the distance between the two laser measuring devices 3, the orifice plate flowmeter should abut against the cleaning plate 26 when passing through the two laser measuring devices 3, and the first spring 30 is in a compressed state. Then, when the rotating circular plate 6 rotates relative to the moving plate 13 during measurement, the moving frame 27 moves to the right relative to the threaded plate 11 when the positioning rod 10 abuts against the notch, which causes the moving frame 27 to move the clamping rod 28 and the triangular plate 29 to the right as a whole, the triangular plate 29 and the circular rod 34 abut to cause the circular rod 34 to move upward relative to the rotating plate 12, the connecting plate 32 is compressed by the circular rod 34, and the sliding plate 25 and the cleaning plate 26 are moved upward under the action of the second spring 33. When the positioning rod 10 and the notch are disconnected, the cleaning plate 26 and the sliding plate 25 return to the original position relative to the rotating plate 12 under the action of the second spring 33, so that the cleaning plate 26 forms a friction cleaning effect on the orifice plate flowmeter during detection, maintains the cleaning effect of the orifice plate flowmeter measurement surface, and thus maintains the accuracy of the measurement result. At the same time, under the limiting action of the sliding plate 25 and the cleaning plate 26, the laser measuring device 3 is located between the sliding plate 25 and the cleaning plate 26, which can also reduce the adverse effects of the external environment on the laser, achieving multiple effects at once.

[0042] When the sliding plate 25 and the cleaning plate 26 move upward, the sliding plate 25 drives the inclined plate 36 to move upward, and the inclined plate 36 moves backward relative to the sliding plate 25 under the restriction of the fixed frame 35. The inclined plate 36 drives the knocking rod 37 and the knocking cylinder 39 to move backward through the fixed block. When the sliding plate 25 and the cleaning plate 26 move downward, the knocking rod 37 and the knocking cylinder 39 move forward, and the knocking cylinder 39 and the orifice plate flowmeter abut against each other, thereby forming a knocking effect on the orifice plate flowmeter. When the laser measuring device 3 is used for detection, the detection effect on the surface of the orifice plate flowmeter can be completed according to the laser intensity received by the laser receiver. Through the knocking of the knocking cylinder 39, if the orifice plate flowmeter has defects, the defects can be enlarged through the knocking of the knocking cylinder 39, thereby improving the detection effect of the laser receiver.

Claims

1. A laser measurement device for the geometric dimensions of an orifice plate flowmeter, comprising a worktable (1), characterized in that, A clamping assembly is installed on the upper side of the worktable (1), and a measuring assembly is installed on the upper side of the worktable (1). The measuring assembly includes two laser measuring instruments (3). A slide rail (17) is fixedly connected to the upper side of the worktable (1). A moving plate (13) is slidably connected inside the slide rail (17). A rotating circular plate (6) is rotatably connected to the side wall of the moving plate (13) via a rotating rod. A connecting block (20) is fixedly connected to the side wall of the rotating circular plate (6). A rotatable through-wall of the connecting block (20) is rotatably connected to the side wall of the connecting block (20). A bidirectional screw (9) has threaded plates (11) threaded to both its outer sides. Two right-angle rods (8) are symmetrically fixed to the sidewall of the connecting block (20). The two right-angle rods (8) are slidably connected to the threaded plates (11). A rotating plate (12) is rotatably connected to the end of the threaded plate (11). The laser measuring instrument (3) is fixedly connected to the rotating plate (12). A rotating assembly for controlling the rotation of the threaded plate (11) is installed on the upper side of the worktable (1). The rotating assembly includes... Includes two clamping plates (18) fixedly installed on the upper side of the workbench (1). The side walls of the two clamping plates (18) are each provided with a wave groove (19). A moving rod (14) is slidably connected to the side wall of the moving plate (13). A connecting rod (21) is fixedly connected to the lower side of the moving rod (14). Sliding rods (22) are fixedly connected to both sides of the connecting rod (21). One end of the sliding rod (22) extends to the wave groove (19) and is slidably connected to the wave groove (19). The upper side of the moving rod (14) is fixedly connected to the wave groove (19). A control plate (15) is fixedly connected to the rotating circular plate (6), and a control rod (16) is fixedly connected to the side wall of the rotating circular plate (6). A torsion spring (7) is fixedly connected between the rotating circular plate (6) and the moving plate (13). During the movement of the moving plate (13), the moving rod (14) drives the control plate (15) to move up and down. The control plate (15) and the control rod (16) abut against each other, causing the rotating circular plate (6) to rotate. The rotating circular plate (6) drives the bidirectional screw (9) to rotate back and forth through the connecting block (20).

2. The laser measurement device for the geometric dimensions of an orifice plate flowmeter according to claim 1, characterized in that, A friction cleaning assembly is installed on the outside of the rotating plate (12). The friction cleaning assembly includes two sliding plates (25) that slide through the rotating plate (12). A cleaning plate (26) is slidably connected to the outside of the two sliding plates (25). A plurality of first springs (30) are fixedly connected between the cleaning plate (26) and the sliding plates (25). A connecting plate (32) is also fixedly connected between the two sliding plates (25). A plurality of second springs (33) are fixedly connected between the connecting plate (32) and the rotating plate (12). A plurality of round rods (34) are fixedly connected to the lower side of the connecting plate (32). A movable frame (27) is slidably connected to the outside of the threaded plate (11). Two clamping rods (28) are symmetrically fixedly connected to the side wall of the movable frame (27). A plurality of triangular plates (29) are also fixedly connected between the two clamping rods (28). A positioning rod (10) is fixedly connected to the upper side of the movable plate (13).

3. The laser measurement device for the geometric dimensions of an orifice plate flowmeter according to claim 2, characterized in that, A striking assembly is installed on the outside of the rotating plate (12). The striking assembly includes through slots (31) on the side walls of the two slide plates (25). Two fixed frames (35) are fixedly connected to the outside of the rotating plate (12). The fixed frames (35) and through slots (31) are slidably connected to an inclined plate (36). A striking rod (37) is fixedly connected to the side wall of the inclined plate (36) through a fixing block. A striking cylinder (39) is slidably connected to the outside of the striking rod (37). A third spring (38) is fixedly connected between the striking cylinder (39) and the striking rod (37).

4. The laser measurement device for the geometric dimensions of an orifice plate flowmeter according to claim 1, characterized in that, The clamping assembly includes a hydraulic rod (4) fixedly installed on the upper side of the workbench (1). The output end of the hydraulic rod (4) is fixedly connected to a frame (5). Multiple clamps (2) are slidably connected to the outer side of the frame (5). Each clamp (2) has a threaded rod threadedly connected to its lower side.

5. The laser measurement device for the geometric dimensions of an orifice plate flowmeter according to claim 4, characterized in that, Each of the clamps (2) has an anti-slip rubber pad fixedly connected to its outer side.

6. The laser measurement device for the geometric dimensions of an orifice plate flowmeter according to claim 1, characterized in that, The rotating plate (12) has two symmetrical mounting holes (23) on its upper side. The threaded plate (11) has a bolt (24) threadedly connected to its side wall. One end of the bolt (24) extends into the mounting hole (23).

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