A flow meter calibration device that facilitates flow switching

Abstract

The utility model discloses a flowmeter calibration device convenient to switch flow relates to flowmeter calibration technical field, it includes fixedly connected with the flow detection pipeline and flow switching mechanism of water storage tank top outer wall, the top of flow detection pipeline is equipped with two installation ports symmetrically, and two installation ports all are equipped with sealing element in, two installation ports are installed with standard flowmeter and the flowmeter to be measured in proper order in. The utility model is provided with flow switching mechanism, and it is convenient to realize the quick smooth switching among different flow range, and then can select multiple characteristic flow points in the range of flowmeter and test, thereby being convenient for comprehensive evaluation its precision, be provided with two anti -shaking stable structure, can carry out positioning treatment to standard flowmeter and the flowmeter to be measured to prevent both from appearing the shaking and the influence detection stability situation when carrying out flow detection work, thereby being favorable to improve the precision of the flowmeter to be measured calibration.

Description

Technical Field

[0001] This utility model relates to the field of flow meter calibration technology, and in particular to a flow meter calibration device that facilitates switching of flow rates. Background Technology

[0002] Flow meters are widely used instruments in industrial production, energy metering, environmental monitoring, and other fields, and their accuracy is crucial. Therefore, flow meters need to be calibrated regularly.

[0003] Currently, flow meter calibration devices mainly use the test data of standard flow meters and flow meters under test to analyze and compare in order to complete the calibration work. However, they do not have the function of flow switching, and cannot achieve rapid and smooth switching between different flow ranges. Consequently, they cannot select multiple characteristic flow points for testing within the flow meter's range, making it inconvenient to comprehensively evaluate its accuracy. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a flow meter calibration device that facilitates flow rate switching.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flow meter calibration device that facilitates flow switching includes a flow detection pipe fixedly connected to the outer wall of the top of a water storage tank and a flow switching mechanism. The top of the flow detection pipe is symmetrically provided with two installation ports, and both installation ports are provided with seals.

[0007] A standard flow meter and a flow meter to be measured are installed sequentially in the two installation ports. Anti-sway and stabilizing structures are provided near both installation ports, and a delivery pump is fixedly connected to the lower outer wall of one side of the water tank through a pump seat.

[0008] The flow switching mechanism includes a loop-shaped liquid delivery pipe, a high-flow electromagnetic control valve, a low-flow electromagnetic control valve, and a controller fixedly installed on the outer wall of the front of the water storage tank.

[0009] Preferably, the return-type liquid delivery pipe includes a high-flow branch, a low-flow branch, an input end, and an output end. The high-flow solenoid control valve is installed on the high-flow branch, and the low-flow solenoid control valve is installed on the low-flow branch.

[0010] Preferably, the output terminal is fixedly connected to one end of the flow detection pipeline, and the outlet of the delivery pump is fixedly connected to the input terminal through the delivery pipe.

[0011] Preferably, the pumping end of the delivery pump is connected to the lower part of one side of the water storage tank through a pumping pipe, and a pumping solenoid valve is installed on the pumping pipe. The other end of the flow detection pipe is fixedly connected to the lower part of the other side of the water storage tank through a return pipe, and a return one-way valve is installed on the return pipe.

[0012] Preferably, the anti-sway stabilizing structure includes a support frame fixedly connected to the top outer wall of the flow detection pipe, a linear guide rail fixedly connected to the side wall of the support frame, a groove opened on one side of the linear guide rail, a bidirectional screw rod rotatably installed in the groove, two adjusting blocks symmetrically screwed to the two opposite thread ends of the bidirectional screw rod, two sliding plates symmetrically fixed to the two adjusting blocks, and two V-shaped locking blocks symmetrically fixed to the outer wall of the adjacent side of the two sliding plates.

[0013] Preferably, a rotating cap is fixedly connected to the front outer wall of the bidirectional screw, and a threaded locking post is coaxially welded to the rear outer wall of the bidirectional screw, with a wing-shaped locking nut threadedly connected to the threaded locking post.

[0014] Preferably, both sliding plates are slidably connected to the linear guide rail.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. When water flows into the flow detection pipe, the standard flow meter at the front end performs standard measurement and transmits the measured standard measurement value to the controller. Then, the flow meter to be tested at the back end performs measurement and transmits its measured measurement value to the controller. The controller compares the values ​​measured by the standard flow meter and the flow meter to be tested, thereby completing the calibration work. After the test is completed, the water will flow back to the water storage tank through the return pipe with the return one-way valve to avoid water waste.

[0017] 2. This utility model is equipped with a flow switching mechanism, which facilitates rapid and stable switching between different flow ranges. This allows multiple characteristic flow points to be selected for testing within the flowmeter's range, thus facilitating a comprehensive evaluation of its accuracy.

[0018] 3. This utility model is equipped with two anti-sway stabilizing structures, which can position the standard flow meter and the flow meter under test to prevent them from shaking during flow detection and affecting the stability of the detection, thereby improving the accuracy of the calibration of the flow meter under test. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0020] Figure 2 This is a front view of the overall structure of this utility model;

[0021] Figure 3 This is a three-dimensional enlarged structural diagram of the connection between the standard flow meter and the flow meter to be measured of this utility model and the flow detection pipeline;

[0022] Figure 4 This is a three-dimensional enlarged structural diagram of the anti-sway and stabilizing structure of this utility model in the top area of ​​the flow detection pipeline;

[0023] Figure 5 This is a three-dimensional enlarged structural diagram of the anti-sway and stabilizing structure of this utility model;

[0024] Figure 6 This is a three-dimensional enlarged structural diagram of a portion of the anti-sway and stabilizing structure of this utility model.

[0025] In the diagram: 1. Water storage tank; 2. Flow detection pipe; 3. Installation port; 4. Standard flow meter; 5. Flow meter to be measured; 6. Pump base; 7. Transfer pump; 8. Recurved liquid delivery pipe; 9. High-flow solenoid control valve; 10. Low-flow solenoid control valve; 11. Controller; 12. Return pipe; 13. Support frame; 14. Linear guide rail; 15. Bidirectional screw; 16. Adjusting block; 17. Sliding plate; 18. V-locking block; 19. Rotary cap; 20. Threaded locking post; 21. Butterfly lock nut. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1, referring to Figure 1-2 A flow meter calibration device that facilitates flow switching includes a flow detection pipe 2 fixedly connected to the top outer wall of a water storage tank 1 and a flow switching mechanism. The top of the flow detection pipe 2 is symmetrically provided with two installation ports 3. Both installation ports 3 are provided with seals. A standard flow meter 4 and a flow meter to be tested 5 are installed in the two installation ports 3 in sequence.

[0028] Specifically, a delivery pump 7 is fixedly connected to the lower outer wall of one side of the water storage tank 1 via a pump base 6. The flow switching mechanism includes a loop-shaped liquid delivery pipe 8, a high-flow electromagnetic control valve 9, a low-flow electromagnetic control valve 10, and a controller 11 fixedly installed on the front outer wall of the water storage tank 1. All electrical components in this embodiment are electrically connected to the controller 11.

[0029] Furthermore, the return-type liquid delivery pipe 8 includes a high-flow branch, a low-flow branch, an input end, and an output end. The high-flow solenoid control valve 9 is installed on the high-flow branch, the low-flow solenoid control valve 10 is installed on the low-flow branch, the output end is fixedly connected to one end of the flow detection pipe 2, and the outlet end of the delivery pump 7 is fixedly connected to the input end through the delivery pipe.

[0030] Furthermore, the pumping end of the delivery pump 7 is connected to the lower side of the water storage tank 1 through a pumping pipe. A pumping solenoid valve is installed on the pumping pipe. The other end of the flow detection pipe 2 is fixedly connected to the lower side of the water storage tank 1 through a return pipe 12. A return check valve is installed on the return pipe 12.

[0031] The working principle of this embodiment is as follows: First, after the flow meter to be measured 5 and the standard flow meter 4 are installed, calibration can be performed. This involves starting the delivery pump 7 and the pumping solenoid valve to extract water from the storage tank 1 and send it through the delivery pipe into the loop-shaped liquid delivery pipe 8. At this time, if the high-flow solenoid control valve 9 is opened, the water will enter the high-flow branch and ultimately enter the flow detection pipe 2 from the output end in a high-flow state. If the low-flow solenoid control valve 10 is opened, the water will enter the low-flow branch and ultimately enter the flow detection pipe 2 from the output end in a low-flow state. This allows for rapid and stable switching between different flow ranges. Multiple characteristic flow points can be selected within the flowmeter's range for testing, facilitating a comprehensive evaluation of its accuracy. Secondly, when water flows into the flow detection pipe 2, the standard flowmeter 4 at the front end performs standard measurement and transmits the measured standard measurement value to the controller 11. Subsequently, the flowmeter 5 under test at the rear end performs measurement and transmits its measured measurement value to the controller 11. The controller 11 compares the values ​​measured by the standard flowmeter 4 and the flowmeter 5 under test, thereby completing the calibration work. Finally, after the test is completed, the water source will flow back to the water storage tank 1 through the return pipe 12 with a return one-way valve to avoid water waste.

[0032] Example 2, refer to Figure 3-6 This embodiment is an optimization based on embodiment 1. Specifically, anti-sway stabilizing structures are provided near both installation ports 3. The anti-sway stabilizing structures include a support frame 13 fixedly connected to the top outer wall of the flow detection pipe 2, a linear guide rail 14 fixedly connected to the side wall of the support frame 13, a groove opened on one side of the linear guide rail 14, a bidirectional screw 15 rotatably installed in the groove, two adjusting blocks 16 symmetrically screwed to the two opposite thread ends of the bidirectional screw 15, two sliding plates 17 symmetrically fixed to the two adjusting blocks 16, and two V-shaped locking blocks 18 symmetrically fixed to the outer wall of the adjacent side of the two sliding plates 17.

[0033] Furthermore, a rotating cap 19 is fixedly connected to the front outer wall of the bidirectional screw 15, and a threaded locking post 20 is coaxially welded to the rear outer wall of the bidirectional screw 15. A butterfly locking nut 21 is threadedly connected to the threaded locking post 20, and both sliding plates 17 are slidably connected to the linear guide rail 14.

[0034] The working principle of this embodiment is as follows: First, after the standard flow meter 4 and the flow meter to be tested 5 are installed, the two anti-sway stabilizing structures can be used to position the standard flow meter 4 and the flow meter to be tested 5 to prevent them from shaking during flow detection and affecting the stability of the detection, thereby improving the calibration accuracy of the flow meter to be tested 5. Second, when operating the anti-sway stabilizing structure, simply rotate the bidirectional screw 15 in the forward direction by rotating the cap 19 to make the two adjusting blocks 16 align and move closer together. Then, the two sliding plates 17 will drive the two V-shaped locking blocks 18 to align and move closer together to position the standard flow meter 4 or the flow meter to be tested 5. After positioning, the butterfly locking nut 21 needs to be tightened on the threaded locking post 20 to achieve the locking effect of the bidirectional screw 15 to ensure the stability of the positioning.

[0035] Finally, by unscrewing the butterfly locking nut 21 on the threaded locking post 20, and then simply rotating the bidirectional screw 15 in the opposite direction by rotating the cap 19, the two adjusting blocks 16 can be moved away from each other. Consequently, the two sliding plates 17 will drive the two V-shaped locking blocks 18 to move away from each other, thereby releasing the positioning of the standard flow meter 4 or the flow meter under test 5. This effectively improves the installation efficiency of the standard flow meter 4 and the flow meter under test 5, thereby improving work efficiency when performing flow meter calibration.

[0036] The contents not described in detail in this specification are prior art known to those skilled in the art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flow meter calibration device for easy flow switching, comprising a flow detection pipe (2) fixedly connected to the outer wall of the top of a water storage tank (1), wherein the top of the flow detection pipe (2) is symmetrically provided with two installation ports (3), and both installation ports (3) are provided with seals, characterized in that, It also includes traffic switching mechanisms; A standard flow meter (4) and a flow meter to be measured (5) are installed in sequence in the two installation ports (3). Anti-sway and stabilizing structures are provided near the two installation ports (3). A delivery pump (7) is fixedly connected to the lower outer wall of one side of the water tank (1) through a pump seat (6). The flow switching mechanism includes a loop-shaped liquid delivery pipe (8), a high-flow electromagnetic control valve (9), a low-flow electromagnetic control valve (10), and a controller (11) fixedly installed on the outer wall of the front of the water storage tank (1).

2. The flow meter calibration device that facilitates flow switching of claim 1, wherein, The loop-shaped liquid delivery pipe (8) includes a high-flow branch, a low-flow branch, an input end and an output end. The high-flow solenoid control valve (9) is installed on the high-flow branch, and the low-flow solenoid control valve (10) is installed on the low-flow branch.

3. The flow meter calibration device for easy flow switching according to claim 2, characterized in that, The output end is fixedly connected to one end of the flow detection pipe (2), and the outlet end of the delivery pump (7) is fixedly connected to the input end through the delivery pipe.

4. The flow meter calibration device that facilitates flow switching of claim 1, wherein, The pumping end of the delivery pump (7) is connected to the lower side of the water storage tank (1) through the pumping pipe, and a pumping solenoid valve is installed on the pumping pipe. The other end of the flow detection pipe (2) is fixedly connected to the lower side of the water storage tank (1) through the return pipe (12), and a return one-way valve is installed on the return pipe (12).

5. The flow meter calibration device of claim 1, wherein, The anti-sway stabilizing structure includes a support frame (13) fixedly connected to the top outer wall of the flow detection pipe (2), a linear guide rail (14) fixedly connected to the side wall of the support frame (13), a groove opened on one side of the linear guide rail (14), a bidirectional screw (15) rotatably installed in the groove, two adjusting blocks (16) symmetrically screwed to the two opposite thread ends of the bidirectional screw (15), two sliding plates (17) symmetrically fixed to the two adjusting blocks (16), and two V-shaped locking blocks (18) symmetrically fixed to the outer wall of the adjacent side of the two sliding plates (17).

6. A flow meter calibration apparatus that facilitates flow switching in accordance with claim 5, wherein, The front outer wall of the bidirectional screw (15) is fixedly connected to a rotating cap (19), and the rear outer wall of the bidirectional screw (15) is coaxially welded with a threaded locking post (20), and a butterfly locking nut (21) is threadedly connected to the threaded locking post (20).

7. A flow meter calibration apparatus that facilitates flow switching in accordance with claim 5, wherein, Both of the sliding plates (17) are slidably connected to the linear guide rail (14).

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