A high-low temperature static mass method calibrating device

Abstract

The utility model provides a kind of high-low temperature static mass method calibrating device, solve the problems such as low temperature control rate of existing test means, lack of flow coupling, its main scheme includes: equipment support, liquid reserve tank is fixed in it, the equipment support is also fixed with weighing box at corresponding liquid reserve tank top, the weighing box is communicated with the liquid reserve tank arrangement;Variable frequency circulating pump, one end is communicated with the liquid reserve tank pipeline, another end is communicated with liquid outflow interface, the liquid outflow interface top pipeline is integrated with corresponding low-temperature equipment interface and high-temperature equipment interface of intercommunication;Orifice flowmeter, one end is communicated with the low-temperature equipment interface by first pipeline, another end is communicated with the weighing box by second pipeline, electromagnetic valve is also set on the second pipeline to control flow in pipeline;The bottom side of the liquid reserve tank is also communicated with return pipeline to be communicated with corresponding pipeline of the liquid outflow interface.

Description

Technical Field

[0001] This utility model relates to mass flow measurement and testing technology, and in particular to a high and low temperature static mass flow method verification device. Background Technology

[0002] Mass flow rate measurement and testing technology is a frequently used testing method in product development verification and factory testing, especially for the stability testing and quantitative evaluation of Coriolis flow meters under rapid temperature change conditions from -40℃ to +120℃. Traditional solutions generally use conventional constant temperature baths for testing, with a temperature change rate of ≤5℃ / min during the test process. However, in actual operating conditions, the rate often reaches 20℃ / min↑, making it impossible to induce thermal stress fatigue. Similarly, traditional tests mostly use static temperature points without simultaneously applying flow disturbances. In real-world scenarios, temperature shocks and flow pulsations occur simultaneously. Obviously, the above testing methods lack coupling with flow, making them prone to flow imbalances caused by load fluctuations or differences in path resistance.

[0003] To address these issues, we propose a high and low temperature static quality testing device. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a high and low temperature static mass method calibration device to solve the problem of insufficient temperature change rate in the existing test, so as to realize the testing of Coriolis mass flow meters under more severe conditions and ensure the accuracy and stability of the measured data.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a high and low temperature static mass testing device, comprising: The equipment support has a liquid storage tank fixed inside it, and a weighing box is also fixed on the top of the equipment support corresponding to the liquid storage tank. The weighing box is connected to the liquid storage tank. A variable frequency circulating pump, one end of which is connected to the liquid storage tank pipeline, and the other end of which is connected to a liquid inflow pipeline. The top of the liquid inflow pipeline is integrated with corresponding low temperature equipment interface and high temperature equipment interface. The Coriolis flow meter has one end connected to the interface of the cryogenic equipment through a first pipeline, and the other end connected to the weighing box through a second pipeline. A solenoid valve is also installed on the second pipeline to control the flow rate in the pipeline. The bottom side of the liquid storage tank is also connected to a return pipe that is connected to the corresponding pipe of the liquid outflow interface.

[0006] Furthermore, a first valve and a second valve are respectively installed on the first pipeline and the second pipeline to switch the first pipeline and the second pipeline on and off.

[0007] Furthermore, both the first pipeline and the second pipeline are fixedly mounted on the top of the equipment bracket by multiple first pipeline supports, and the first pipeline and the second pipeline are arranged horizontally.

[0008] Furthermore, the high-temperature equipment interface employs short-time high-power pulse heating, implemented by PID control in conjunction with a solid-state relay, while the low-temperature equipment interface utilizes thermoelectric cooling, implemented by TEC in conjunction with compression cooling.

[0009] Furthermore, a third valve is provided on the return pipeline to control the flow of the return liquid, and the return pipeline is fixedly mounted on the bottom of the equipment support by multiple second pipeline supports.

[0010] Furthermore, a fourth valve is provided at the connection between the weighing box and the liquid storage tank to enable on / off switching.

[0011] Furthermore, the end of the second pipeline near the weighing box is bent to correspond to the opening at the top of the weighing box.

[0012] Furthermore, the bottom of the variable frequency circulating pump is welded and fixed to the bottom of the equipment bracket via a fixed bracket.

[0013] Furthermore, the equipment bracket is also equipped with self-locking wheels at the four corners of its bottom.

[0014] Compared with the prior art, the beneficial effects of this utility model include: by connecting the heating and cooling equipment for circulation, and by using valves (manual valves and solenoid valves) for fine control, instantaneous cooling and heating can be achieved. Subsequently, data is statistically analyzed using a Coriolis mass flow meter and compared with the data from normally calibrated equipment to determine the certainty of the tested mass flow meter data. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 The schematic diagram shows the overall structure of the device according to one embodiment of the present invention.

[0016] The following are the labels in the diagram: 1. Variable frequency circulating pump; 2. Liquid inlet pipe; 3. High temperature equipment interface; 4. Low temperature equipment interface; 5. Coriolis flow meter; 6. Liquid outlet interface; 7. Equipment support; 8. Solenoid valve; 9. Weighing box; 10. Liquid storage tank; 11. First pipe; 12. First valve; 13. Second pipe; 14. Second valve; 15. First pipe support; 16. Second pipe support; 17. Third valve; 18. Wheels; 19. Return pipe. Detailed Implementation

[0017] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0018] According to one embodiment of the present invention, in conjunction with Figure 1 As shown.

[0019] Regarding the overall structure, in this embodiment, a high and low temperature static mass method verification device includes: The equipment support has a liquid storage tank fixed inside it, and a weighing box is also fixed on the top of the equipment support corresponding to the liquid storage tank. The weighing box is connected to the liquid storage tank. A variable frequency circulating pump, one end of which is connected to the liquid storage tank pipeline, and the other end of which is connected to a liquid inflow pipeline. The top of the liquid inflow pipeline is integrated with corresponding low temperature equipment interface and high temperature equipment interface. The Coriolis flow meter has one end connected to the interface of the cryogenic equipment through a first pipeline, and the other end connected to the weighing box through a second pipeline. A solenoid valve is also installed on the second pipeline to control the flow rate in the pipeline. The bottom side of the liquid storage tank is also connected to a return pipe that is connected to the corresponding pipe of the liquid outflow interface.

[0020] As can be seen, to address the issue of low temperature change rate during traditional constant temperature bath testing, this application specifically designs two independent interfaces: a low-temperature equipment interface and a high-temperature equipment interface, to ensure the required temperature change rate during testing. Specifically, for the high-temperature equipment interface, short-duration high-power pulse heating (such as PID control + solid-state relay) is employed to overcome the temperature change rate limitation of traditional constant current heating and avoid the risk of material overheating. For the low-temperature equipment interface, thermoelectric cooling (TEC) + compression cooling is used, switching cooling modes in the low-temperature region to overcome the rate bottleneck of a single cooling method in a specific temperature range.

[0021] Furthermore, regarding the specific structure of the pipelines, a first valve and a second valve are respectively installed on the first pipeline and the second pipeline to control the flow between them. Both the first pipeline and the second pipeline are fixedly mounted on the top of the equipment support via multiple first pipeline supports, and are arranged horizontally. A third valve is also provided on the return pipeline to control the flow of return liquid. The return pipeline is fixedly mounted on the bottom of the equipment support via multiple second pipeline supports. A fourth valve is installed at the connection between the weighing tank and the liquid storage tank to control the flow. The end of the second pipeline near the weighing tank is the liquid outlet, and its bend is designed to correspond to the opening at the top of the weighing tank.

[0022] Similarly, the bottom of the variable frequency circulating pump is welded and fixed to the bottom of the equipment bracket via a fixed bracket. Self-locking wheels are also fixed at the four corners of the bottom of the equipment bracket to facilitate the relocation and transportation of the device.

[0023] Based on the above structure, the operation of this device is as follows: 1. Pre-start checks Equipment status check: 1) Confirm that all components of the equipment are in normal condition, check the status of each valve, and confirm based on actual usage. 2) Connect the device to be tested and ensure that the bolts or butterfly clips are tight; 3) First, open the valve at the liquid return port. Then, check whether the variable frequency pump is safely connected to the power supply before turning on the power to ensure the equipment is running normally.

[0024] Environmental conditions confirmation: Check whether the power supply voltage, room temperature and humidity meet the requirements.

[0025] 2. Startup Process 1) Power on: Connect the power supply in the correct sequence; 2) Parameter settings: Set parameters such as temperature, speed, and pressure according to process requirements; 3) Process monitoring: Observe the equipment's operating status and check indicators such as vibration, temperature, and pressure; 4) Abnormal handling: If any abnormality is found (such as abnormal vibration, abnormal noise, or motor overheating), the power should be cut off and the machine stopped immediately.

[0026] 3. System Initialization Phase 1) After all equipment installation is completed, first open the main valve of the liquid inflow pipeline, and simultaneously adjust the fourth valve on the return pipeline to the appropriate opening degree; 2) Confirm that all interface valves are fully closed.

[0027] 4. System filling and circulation test 1) Ensure the detection system is fully filled with working fluid to establish a stable fluid circulation loop; 2) Check the status of each valve one by one to ensure there are no leaks or misoperations; 3) Close the liquid reflux valve and simultaneously select the appropriate test conditions: High temperature test: Open the high temperature equipment interface valve; Low temperature test: Open the low temperature equipment interface valve.

[0028] 5. Sensor performance testing 1) Conduct high and low temperature shock tests on the target sensor; 2) Record sensor response data in real time and simultaneously collect the measured values ​​from the weighing module and the mass flow meter; 3) Calculate the data deviation rate per unit time; 4) Finally, evaluate the metering performance indicators of the mass flow meter.

[0029] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A high and low temperature static mass testing device, characterized in that, include: The equipment support has a liquid storage tank fixed inside it, and a weighing box is also fixed on the top of the equipment support corresponding to the liquid storage tank. The weighing box is connected to the liquid storage tank. A variable frequency circulating pump, one end of which is connected to the liquid storage tank pipeline, and the other end of which is connected to a liquid inflow pipeline. The top of the liquid inflow pipeline is integrated with corresponding low temperature equipment interface and high temperature equipment interface. The Coriolis flow meter has one end connected to the interface of the cryogenic equipment through a first pipeline, and the other end connected to the weighing box through a second pipeline. A solenoid valve is also installed on the second pipeline to control the flow rate in the pipeline. The bottom side of the liquid storage tank is also connected to a return pipe that is connected to the corresponding pipe of the liquid outflow interface.

2. The high and low temperature static mass method calibration device according to claim 1, characterized in that: The first pipeline and the second pipeline are respectively equipped with a first valve and a second valve to control the connection and disconnection of the first pipeline and the second pipeline.

3. The high and low temperature static mass method verification device according to any one of claims 1-2, characterized in that: Both the first pipeline and the second pipeline are fixedly mounted on the top of the equipment bracket by multiple first pipeline supports, and the first pipeline and the second pipeline are arranged horizontally.

4. The high and low temperature static mass method calibration device according to claim 1, characterized in that: The high-temperature equipment interface uses short-time high-power pulse heating, which is achieved by PID control in conjunction with a solid-state relay. The low-temperature equipment interface uses thermoelectric cooling, which is achieved by TEC in conjunction with compression cooling.

5. The high and low temperature static mass method calibration device according to claim 1, characterized in that: The return pipeline is also equipped with a third valve to control the flow of the return liquid. The return pipeline is fixedly mounted on the bottom of the equipment support by multiple second pipeline supports.

6. The high and low temperature static mass method calibration device according to claim 1, characterized in that: A fourth valve is provided at the connection between the weighing tank and the liquid storage tank to enable on / off switching.

7. The high and low temperature static mass method calibration device according to claim 1, characterized in that: The second pipeline is bent at one end near the weighing box to correspond to the opening at the top of the weighing box.

8. The high and low temperature static mass method calibration device according to claim 1, characterized in that: The bottom of the variable frequency circulating pump is welded and fixed to the bottom of the equipment bracket via a fixed bracket.

9. The high and low temperature static mass method calibration device according to claim 1, characterized in that: The equipment support is also equipped with self-locking wheels at the four corners of its bottom.

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