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Flowmeter precision detection device and detection method

A technology of detection device and flow meter, which is applied in the direction of testing/calibrating volume flow, etc., can solve the problems of decreased accuracy and inability to measure, and achieve the effect of accurate detection

Active Publication Date: 2022-05-13
HANGZHOU ZHENHUA INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is too large, it is rare, and if it is too small, there are relatively many cases. For example, when measuring distilled water or deionized water, the accuracy will decrease or even cannot be measured.

Method used

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  • Flowmeter precision detection device and detection method
  • Flowmeter precision detection device and detection method
  • Flowmeter precision detection device and detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] refer to figure 1 and figure 2 , a flowmeter accuracy detection device, including a box 1, a detection pipeline 2, a purification pipeline 3 and a conductivity detection mechanism 4. The tank 1 can contain a certain amount of liquid to be tested, the purification pipeline 3 can reduce the conductivity of the liquid, and the conductivity of the liquid flowing through the detection pipeline 2 will increase to a certain extent, and the two can pass through the opening of the pipeline. degree to control the conductivity at the desired value. The conductivity detection mechanism 4 monitors the conductivity of the liquid in real time. The liquid to be tested is generally water (not ultrapure water) or an aqueous solution, and may also be other liquids with a certain conductivity. In this embodiment, water is taken as an example.

[0044] refer to figure 1 and figure 2 , the tank 1 is provided with a pump 11 , and the input end of the pump 11 is located at the bottom o...

Embodiment 2

[0065] refer to Figure 5 The difference between this embodiment and Embodiment 1 is that the water pipe 61 is canceled, the water pipe 61 is closed, or a shut-off valve is set on the water pipe 61 . The bottom of the water receiving box 6 is provided with a plurality of drain holes 62 .

[0066] refer to Figure 5 and Figure 6 , the inner cavity of the inner box 71 is provided with a water-passing box 8 below the drain hole 62, the water-passing box 8 is a cube, and the side wall of the water-passing box 8 protrudes with a support arm 81, and the support arm 81 is connected to the inner box 71. The inner wall is fixed.

[0067] The top of the water box 8 is provided with a cover body 88 , the edge of the cover body 88 protrudes and is provided with a fence 89 , and the drain hole 62 is located directly above the area surrounded by the fence 89 . The surface of the cover body 88 is penetrated with a plurality of through holes 881 connected to the interior of the water box...

Embodiment 3

[0071] refer to figure 1 and figure 2 , a method for detecting the accuracy of a flowmeter, comprising a box body 1, a detection pipeline 2 and a purification pipeline 3, a pump 11 is arranged in the box body 1, and the detection pipeline 2 and the purification pipeline 3 are two output ends of the pump 11. The branch flow channel and the detection pipeline 2 can be equipped with a flowmeter to be tested, and the detection pipeline 2 is also equipped with a return branch upstream of the flowmeter; the detection steps include:

[0072] In the preparation stage, keep the detection pipeline 2 closed, and the purification pipeline 3 is continuously connected, so that the conductivity of the liquid used for detection in the box 1 is continuously reduced, and the conductivity of the liquid is detected and observed in real time; when the conductivity value reaches or approaches the set value When the value is fixed, the detection pipeline 2 and / or the return branch are turned on, a...

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Abstract

The invention relates to a flowmeter accuracy detection device and method, the flowmeter accuracy detection device comprises a box body capable of containing liquid to be detected, and further comprises a detection pipeline, a purification pipeline, a conductivity detection mechanism and a flow detection mechanism, the purification pipeline is provided with a first stop valve and a purifier capable of reducing the conductivity of the liquid, and the purification pipeline is provided with a second stop valve; liquid flows back into the box body through the purification pipeline, the detection pipeline comprises a detection section used for installing a flowmeter, a liquid outlet pipe is arranged at the tail end of the detection pipeline, a pipe opening of the liquid outlet pipe faces an inner cavity of the box body, and the conductivity detection mechanism is used for detecting the conductivity of the liquid in the box body. And the flow detection mechanism can be used for draining from the liquid outlet pipe and detecting the flow. The method has the effect that the detection precision of the flowmeter under the low conductivity condition can be accurately detected.

Description

technical field [0001] The present application relates to the field of flowmeter detection devices, and in particular to a flowmeter accuracy detection device and detection method. Background technique [0002] Electromagnetic flowmeter is an instrument that uses the principle of electromagnetic induction to measure the flow of conductive fluid based on the electromotive force induced when the conductive fluid passes through an external magnetic field. The advantage of the electromagnetic flowmeter is that the pressure loss is extremely small and the measurable flow range is large. The ratio of the maximum flow rate to the minimum flow rate is generally more than 20:1, and the applicable industrial pipe diameter range is wide, up to 3m. The output signal is linear with the measured flow rate, and the accuracy is high. It can measure acid, alkali, and salt solutions. , water, sewage, corrosive liquid, and fluid flow of mud, pulp, pulp, etc. [0003] The electromagnetic flow...

Claims

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Application Information

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IPC IPC(8): G01F25/10
Inventor 卢勇光邢伟积徐小强
Owner HANGZHOU ZHENHUA INSTR
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