Large-diameter pipeline flowmeter calibration tool

Abstract

The utility model discloses a large-diameter pipeline flowmeter calibration tool which comprises an upper installation supporting plate, the bottom of the upper installation supporting plate is connected with a lower circulation backflow device through four sets of supporting columns, a flowmeter body is installed on the upper installation supporting plate, the end, away from a connecting flange, of a pipeline is connected with a telescopic corrugated pipe, and the end, away from the connecting flange, of the pipeline is connected with a lower circulation backflow device. The other end of the telescopic corrugated pipe is connected with a telescopic extension assembly through an L-shaped pipeline connector, the telescopic extension assembly penetrates through the upper installation supporting plate and extends into the lower circulation backflow device, and a telescopic adjusting assembly connected with the telescopic extension assembly is installed on the lower circulation backflow device. Detection water can be recycled for multiple times, waste of water resources is avoided, adjustment in different modes can be achieved according to different specifications of the flow meter bodies, the flow meter bodies of various specifications can be matched, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flowmeter calibration equipment, and specifically, to a calibration tooling for large-diameter pipeline flowmeters. Background Technique

[0002] Measurement is the eyes of industrial production. Flow measurement is one of the components of metrology science and technology, and it has a close relationship with the national economy, national defense construction, and scientific research. Doing a good job in this work plays an important role in ensuring product quality, improving production efficiency, and promoting the development of science and technology. Especially in the current era of energy crisis and increasingly high degree of industrial production automation, the status and role of flowmeters in the national economy are more obvious.

[0003] The accuracy and reliability of flowmeters are crucial for the control of industrial production processes and product quality control. In order to ensure the accuracy and reliability of flowmeters, regular calibration and calibration are required for flowmeters. In the prior art, a flow test tooling calibration device is generally used for detection to ensure its accuracy and reliability. However, the existing tooling can only adapt to flowmeters of a certain specification and cannot be flexibly matched with flowmeters of different sizes, resulting in great limitations in actual use.

[0004] In view of the problems in the related art, no effective solution has been proposed yet. Content of the Utility Model

[0005] Aiming at the deficiencies in the prior art, the purpose of the utility model is to propose a calibration tooling for large-diameter pipeline flowmeters.

[0006] To achieve the above purpose, the utility model is realized by the following technical solutions. A calibration tooling for large-diameter pipeline flowmeters includes an upper installation support plate. The bottom of the upper installation support plate is connected with a lower circulation return device through four groups of support columns. A flowmeter body is installed on the upper installation support plate. The water inlet and outlet of the flowmeter body are both connected with pipelines through connecting flanges. One end of the pipeline far from the connecting flange is connected with a telescopic bellows. The other end of the telescopic bellows is connected with a telescopic extension component that penetrates through the upper installation support plate and extends into the lower circulation return device through an L-shaped pipe joint. A telescopic adjustment component connected with the telescopic extension component is installed on the lower circulation return device.

[0007] Preferably, the lower circulation return device includes a lower collection water tank. An inclined diversion plate is arranged at the bottom of one end inside the lower collection water tank. A submersible pump is installed at one end of the bottom inside the lower collection water tank far from the inclined diversion plate. The output end of the submersible pump is connected with a delivery pipe extending outside the lower collection water tank.

[0008] Preferably, one end of the lower collection water tank away from the delivery pipe is connected through a reflux pipeline, and a drainage pipeline is installed at one end of the lower collection water tank where the submersible pump is located, and a control valve is installed on the drainage pipeline.

[0009] Preferably, the telescopic adjustment assembly includes a support square pipe fixed at the center of the top of the lower collection water tank. An extension rod is movably penetrated through the support square pipe. Both sides of the top end of the extension rod are fixedly connected with adjustment support cross bars connected to the telescopic extension assembly.

[0010] Preferably, a strip-shaped sliding groove is opened at one end of the support square pipe. One end of the extension rod located inside the support square pipe is fixedly connected with an adjustment threaded column penetrating through the strip-shaped sliding groove. A limit nut is sleeved on the end of the adjustment threaded column located outside the support square pipe.

[0011] Preferably, the telescopic extension assembly includes an outer support sleeve penetrating through the upper installation support plate. The bottom end of the outer support sleeve is connected with the corresponding delivery pipe and reflux pipeline. An inner extension pipe is slidably arranged inside the outer support sleeve, and the top end of the inner extension pipe is connected with the L-shaped pipe joint. A vertical sliding groove is opened on the outer support sleeve, and the adjustment support cross bar penetrates through the vertical sliding groove and is connected with the outer wall of the inner extension pipe.

[0012] Preferably, limiting sliding grooves are symmetrically opened on both sides of the inner wall of the outer support sleeve. Limiting sliding blocks matched with the limiting sliding grooves are symmetrically arranged on both sides of the outer wall of the inner extension pipe. Annular sealing sheets are arranged on the outer walls of the connections between the delivery pipe and the reflux pipeline and the outer support sleeve. The outer wall of the outer support sleeve and the upper installation support plate are installed and connected through a fixed sleeve.

[0013] The utility model provides a calibration tooling for a large-diameter pipeline flowmeter, and the beneficial effects are as follows:

[0014] The lower circulation reflux device is connected to the bottom of the support plate by four groups of support columns, which can be used for multiple recycling of the water after measurement, avoiding waste of water resources. The flowmeter body is connected to the pipeline through a connecting flange. By setting the telescopic bellows, the positions of the two connecting flanges can be adjusted according to actual needs, so as to adapt to flowmeter bodies of different lengths. The set telescopic extension component cooperates with the telescopic adjustment component, so that the height of the entire telescopic extension component can be adjusted. Therefore, when facing a flowmeter body with higher inlet and outlet heights, the assembly work can be carried out very conveniently, avoiding the problem that the telescopic bellows is subjected to diagonal pulling and extrusion, resulting in inaccurate flow detection. The structure of the utility model is simple, the detected water can be recycled multiple times, avoiding waste of water resources, and different adjustment methods can be realized according to different specifications of the flowmeter body, so that it can cooperate with flowmeter bodies of various specifications and improve the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is the front view of a large-diameter pipeline flowmeter calibration tooling according to an embodiment of the present invention;

[0017] Figure 2 is the structural schematic diagram of the lower circulation reflux device in a large-diameter pipeline flowmeter calibration tooling according to an embodiment of the present invention;

[0018] Figure 3 is the structural schematic diagram of a large-diameter pipeline flowmeter calibration tooling according to an embodiment of the present invention;

[0019] Figure 4 is the structural schematic diagram of the telescopic extension component in a large-diameter pipeline flowmeter calibration tooling according to an embodiment of the present invention.

[0020] In the figure:

[0021] 1. Upper mounting support plate; 2. Support column; 3. Lower circulation and reflux device; 4. Telescopic adjustment component; 5. Telescopic extension component; 6. Telescopic bellows; 7. Pipeline; 8. Connecting flange; 9. Flowmeter body; 10. Lower collection water tank; 11. Inclined deflector; 12. Submersible pump; 13. Delivery pipe; 14. Reflux pipeline; 15. Drainage pipeline; 16. Control valve; 17. Support square pipe; 18. Extension rod; 19. Adjusting support cross bar; 20. Strip-shaped sliding groove; 21. Adjusting threaded column; 22. Locking nut; 23. Outer support sleeve; 24. Inner extension pipe; 25. Vertical sliding groove; 26. Limit sliding groove; 27. Limit slider; 28. Annular sealing piece; 29. Fixed sleeve. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-4 , the present invention provides a calibration tooling for a large-diameter pipeline flowmeter, including an upper mounting support plate 1. The bottom of the upper mounting support plate 1 is connected with a lower circulation and reflux device 3 through four support columns 2. By connecting the lower circulation and reflux device 3 through four support columns 2 at the bottom of the upper mounting support plate 1, it can be used for the multiple recycling of water after measurement to avoid waste of water resources. And a flowmeter body 9 is installed on the upper mounting support plate 1. The water inlet and outlet of the flowmeter body 9 are both connected with a pipeline 7 through a connecting flange 8. One end of the pipeline 7 far from the connecting flange 8 is connected with a telescopic bellows 6. The set flowmeter body 9 is connected with the pipeline 7 through the connecting flange 8. By providing the telescopic bellows 6, the positions of the two connecting flanges 8 can be adjusted according to actual needs, so as to adapt to flowmeter bodies 9 of different lengths. The other end of the telescopic bellows 6 is connected with a telescopic extension component 5 through an L-shaped pipeline joint, which penetrates through the upper mounting support plate 1 and extends into the lower circulation and reflux device 3. An telescopic adjustment component 4 connected with the telescopic extension component 5 is installed on the lower circulation and reflux device 3. The set telescopic extension component 5 cooperates with the telescopic adjustment component 4, so that the height of the entire telescopic extension component 5 can be adjusted. Thus, when facing a flowmeter body 9 with a higher water inlet and outlet height, the assembly work can be carried out very conveniently, avoiding the problem that the telescopic bellows 6 is obliquely pulled and squeezed, resulting in inaccurate flow detection.

[0024] In an embodiment, please refer to the attached drawings of the specification Figure 2As shown in the figure, the lower circulation return device 3 includes a lower collection water tank 10. At the bottom of one end inside the lower collection water tank 10, an inclined guide plate 11 is provided. At the bottom of the other end inside the lower collection water tank 10, away from the inclined guide plate 11, a submersible pump 12 is installed. The output end of the submersible pump 12 is connected to a delivery pipe 13 extending outside the lower collection water tank 10. At the other end of the lower collection water tank 10, away from the delivery pipe 13, a return pipeline 14 is connected through. And at the end of the lower collection water tank 10 where the submersible pump 12 is located, a drainage pipe 15 is installed. A control valve 16 is installed on the drainage pipe 15. Through the inclined guide plate 11 arranged inside the lower collection water tank 10, the water flowing back through the return pipeline 14 flows towards the lower side. Through the cooperation of the submersible pump 12 and the delivery pipe 13, the water delivery work during measurement is realized. The arranged drainage pipe 15 and the control valve 16 facilitate the discharge and addition of water inside the lower collection water tank 10.

[0025] In one embodiment, please refer to the attached drawings of the specification Figure 3 As shown in the figure, the telescopic adjustment assembly 4 includes a support square pipe 17 fixed at the center of the top of the lower collection water tank 10. An extension rod 18 is movably arranged through the support square pipe 17. On both sides of the top end of the extension rod 18, adjustment support crossbars 19 connected to the telescopic extension assembly 5 are fixedly connected. A strip-shaped sliding groove 20 is opened at one end of the support square pipe 17. At the end of the extension rod 18 located inside the support square pipe 17, an adjustment threaded column 21 penetrating through the strip-shaped sliding groove 20 is fixedly connected. A limit nut 22 is sleeved on the end of the adjustment threaded column 21 located outside the support square pipe 17. During adjustment, by loosening the limit nut 22, the extension rod 18 is adjusted inside the support square pipe 17. After reaching the appropriate position, the limit nut 22 is tightened. Through the frictional force between the limit nut 22 and the outer wall of the support square pipe 17, the positioning work of the extension rod 18 is realized.

[0026] In one embodiment, please refer to the attached drawings of the specification Figure 4As shown, the telescopic extension assembly 5 includes an outer support sleeve 23 passing through the upper mounting support plate 1. A corresponding conveying pipe 13 and a reflux pipeline 14 are connected to the bottom end of the outer support sleeve 23. An inner extension pipe 24 is slidably arranged in the outer support sleeve 23, and the top end of the inner extension pipe 24 is connected to the L-shaped pipe joint. A vertical sliding groove 25 is formed in the outer support sleeve 23, and the adjusting support cross bar 19 passes through the vertical sliding groove 25 and is connected to the outer wall of the inner extension pipe 24. Limiting sliding grooves 26 are symmetrically formed on both sides of the inner wall of the outer support sleeve 23, and limiting sliding blocks 27 matched with the limiting sliding grooves 26 are symmetrically arranged on both sides of the outer wall of the inner extension pipe 24. Annular sealing sheets 28 are arranged on the outer walls of the joints between the conveying pipe 13 and the reflux pipeline 14 and the outer support sleeve 23. The outer wall of the outer support sleeve 23 and the upper mounting support plate 1 are installed and connected through a fixing sleeve 29. By driving the inner extension pipe 24 located in the outer support sleeve 23 to move up and down through the arranged adjusting support cross bar 19, its length can be changed. The arranged limiting sliding grooves 26 cooperate with the limiting sliding blocks 27 to prevent the inner extension pipe 24 from reaching the vertical sliding groove 25 during movement, resulting in pipeline water leakage, and realizing the overall sealing performance of the pipeline during displacement.

[0027] In practical applications, a lower circulation reflux device 3 is connected to the bottom of the upper mounting support plate 1 through four support columns 2, which can be used for multiple recycling of the water after measurement to avoid waste of water resources. The arranged flowmeter body 9 is connected to the pipeline 7 through a connecting flange 8. By arranging the telescopic corrugated pipe 6, the positions of the two connecting flanges 8 can be adjusted according to actual needs, so as to adapt to flowmeter bodies 9 of different lengths. The arranged telescopic extension assembly 5 cooperates with the telescopic adjustment assembly 4, enabling the height of the entire telescopic extension assembly 5 to be adjusted. Thus, when facing a flowmeter body 9 with higher inlet and outlet heights, the assembly work can be carried out very conveniently, avoiding the problem that the telescopic corrugated pipe 6 is subjected to oblique pulling and extrusion, resulting in inaccurate flow detection. The utility model has a simple structure, can recycle the detected water multiple times, avoid waste of water resources, and can be adjusted in different ways according to the different specifications of the flowmeter body 9, enabling it to cooperate with flowmeter bodies 9 of various specifications and improving the detection accuracy.

[0028] Although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A calibration tooling for a large-diameter pipeline flowmeter, characterized in that It includes an upper mounting support plate (1). The bottom of the upper mounting support plate (1) is connected to a lower circulation return device (3) through four groups of support columns (2). And a flowmeter body (9) is mounted on the upper mounting support plate (1). The water inlet and outlet of the flowmeter body (9) are both connected to a pipeline (7) through a connecting flange (8). One end of the pipeline (7) far from the connecting flange (8) is connected to a telescopic bellows (6). The other end of the telescopic bellows (6) is connected to a telescopic extension assembly (5) that penetrates through the upper mounting support plate (1) and extends into the lower circulation return device (3) through an L-shaped pipeline joint. A telescopic adjustment assembly (4) connected to the telescopic extension assembly (5) is mounted on the lower circulation return device (3).

2. The calibration tooling for a large-diameter pipeline flowmeter according to claim 1, characterized in that, The lower circulation return device (3) includes a lower collection water tank (10). At the bottom of one end inside the lower collection water tank (10), an inclined guide plate (11) is arranged. A submersible pump (12) is mounted at one end of the inner bottom of the lower collection water tank (10) far from the inclined guide plate (11). The output end of the submersible pump (12) is connected to a delivery pipe (13) extending outside the lower collection water tank (10).

3. The calibration tooling for a large-diameter pipeline flowmeter according to claim 2, wherein One end of the lower collection water tank (10) far from the delivery pipe (13) is connected through a return pipeline (14). And a drain pipeline (15) is mounted at one end of the lower collection water tank (10) where the submersible pump (12) is located. A control valve (16) is mounted on the drain pipeline (15).

4. The calibration tooling for a large-diameter pipeline flowmeter according to claim 3, characterized in that The telescopic adjustment assembly (4) includes a support square pipe (17) fixed at the center of the top of the lower collection water tank (10). An extension support rod (18) is movably penetrated through the support square pipe (17). Both sides of the top end of the extension support rod (18) are fixedly connected to adjustment support cross bars (19) connected to the telescopic extension assembly (5).

5. The calibration tooling for a large-diameter pipeline flowmeter according to claim 4, wherein A strip-shaped sliding groove (20) is opened at one end of the support square pipe (17). One end of the extension support rod (18) located inside the support square pipe (17) is fixedly connected to an adjustment threaded column (21) penetrating through the strip-shaped sliding groove (20). A limit nut (22) is sleeved on the end of the adjustment threaded column (21) located outside the support square pipe (17).

6. The calibration tooling for a large-diameter pipeline flowmeter according to claim 5, wherein The telescopic extension assembly (5) includes an outer support sleeve (23) penetrating through the upper mounting support plate (1). The bottom end of the outer support sleeve (23) is connected to the corresponding delivery pipe (13) and the return pipeline (14). An inner extension pipe (24) is slidably arranged inside the outer support sleeve (23). And the top end of the inner extension pipe (24) is connected to the L-shaped pipeline joint. A vertical sliding groove (25) is opened on the outer support sleeve (23). And the adjustment support cross bar (19) penetrates through the vertical sliding groove (25) and is connected to the outer wall of the inner extension pipe (24).

7. A calibration tool for a large-diameter pipeline flowmeter according to claim 6, characterized in that, On both sides of the inner wall of the outer support sleeve (23), limiting sliding grooves (26) are symmetrically formed. On both sides of the outer wall of the inner extension pipe (24), limiting sliding blocks (27) that are matched with the limiting sliding grooves (26) are symmetrically arranged. An annular sealing sheet (28) is arranged on the outer wall of the connection between the conveying pipe (13) and the reflux pipeline (14) and the outer support sleeve (23). The outer wall of the outer support sleeve (23) and the upper installation support plate (1) are installed and connected through a fixing sleeve (29).

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