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Ultrasonic water meter flow calibration standard device

A flow verification and standard device technology, which is applied in measuring devices, testing/calibrating devices, liquid/fluid solid measurement, etc., can solve problems such as poor stability, large flow fluctuations, feedback signal interference, etc., and achieve high stability and environmental changes The effect of small influence and high measurement accuracy

Active Publication Date: 2015-05-06
姜跃炜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, manual adjustment valves usually use single or multiple throttle valves, the flow adjustment process is slow and complicated, the flow fluctuation is large, the stability is poor, and automatic adjustment is not possible, while the existing automatic adjustment valves use closed-loop feedback to adjust the valve opening. , its feedback signal is easily disturbed by the use environment, and it is easy to cause sudden fluctuations in traffic

Method used

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  • Ultrasonic water meter flow calibration standard device
  • Ultrasonic water meter flow calibration standard device
  • Ultrasonic water meter flow calibration standard device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: see figure 1 , the standard volume device 40 is a volume tank 40b, and the constant pressure water supply system 10, the ultrasonic water meter detection platform 20 and the standard volume tank 40b are sequentially connected circularly to form a water circulation system. The tank body of the standard volume tank 40b has a standard volume scale. The water flow enters from the top of the tank body and flows out from the bottom into the water tank 11 of the constant pressure water supply device 10, which is used for calibrating the ultrasonic water meter.

[0027] see figure 2 , wherein the constant pressure water supply system 10 includes a water tank 11, two water pumps 12, 13 and a surge tank 14, the water tank 11 is respectively connected to the two water pumps 12, 13 through a manual ball valve 15, and the two water pumps are respectively connected to two A different check valve 16 is connected to the surge tank 14 afterward. Among them, the volume o...

Embodiment 2

[0030] Embodiment 2: There is usually a standard volume device for verifying ultrasonic water meters in the flow identification standard device, such as the standard volume tank or electronic scale weighing water tank in Embodiment 1. In order to maintain the measurement accuracy of the ultrasonic water meter, it is necessary to select a standard volume tank with higher measurement accuracy. However, the volume tank with high measurement accuracy is very sensitive to environmental changes. Temperature, humidity, buoyancy or deformation of the tank will affect the measurement accuracy. Electronic scales Also have above-mentioned defective. Therefore, see Figure 5, in Embodiment 2 of the present invention, an annular volumetric tube 40a is used instead of a standard volumetric tank 40b to calibrate the flow rate of the ultrasonic water meter, and the annular volumetric tube 40a is arranged between the constant pressure water supply system 10 and the ultrasonic water meter detec...

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Abstract

The invention discloses an ultrasonic water meter flow calibration standard device. The ultrasonic water meter flow calibration standard device comprises a constant-pressure water supply system (10), an annular system formed by a standard volume device (40) and an ultrasonic water meter detection table (20), and a multi-gear fixed-point flow adjusting device (30) used for adjusting system flow, wherein the multi-shift fixed-point flow adjusting device comprises a venturi nozzle and an electromagnetic valve; furthermore, an annular volume pipe is taken as the standard volume device. The ultrasonic water meter flow calibration standard device can be used for exerting the effect of calibrating an ultrasonic water meter in multiple gears; the ultrasonic water meter flow calibration standard device is high in stability and is slightly affected by the environment change; the metering accuracy readability reaches 0.05%.

Description

technical field [0001] The invention relates to a flow verification standard device, in particular to an ultrasonic water meter flow verification standard device. Background technique [0002] The flow verification standard device is a standard test bench used in the verification and calibration of flow meters. Its accuracy and stability greatly affect the measurement accuracy of the flow meters produced. It is a flow verification standard with high precision and good stability. The device can not only provide reliable technical basis for manufacturers, quality supervision departments and measurement technology institutions, but also provide accurate and unified measurement standards for the introduction of intelligent flowmeters in my country in the future. [0003] In the prior art, the ultrasonic water meter flow verification device usually uses a manual adjustment valve or an automatic adjustment valve to adjust the flow through the ultrasonic water meter to be verified, ...

Claims

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Application Information

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IPC IPC(8): G01F25/00
Inventor 姜跃炜
Owner 姜跃炜
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