Test device and test method for small-diameter gas sound velocity measurement
A test device and small diameter technology, applied in the direction of measurement device, measurement of propagation velocity, measurement of ultrasonic/sonic wave/infrasonic wave, etc., can solve problems such as errors, achieve high precision, simple operation, and simple structure
Inactive Publication Date: 2016-02-17
CHINA JILIANG UNIV
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When the temperature in the gas sound velocity measurement device changes, the resonance frequency of the ultrasonic transducer will change. If the driving frequency of the ultrasonic transducer is not adjusted, then the gas sound velocity measurement at this time will produce unpredictable Errors
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0033] Such as figure 1 As shown, the device of the present invention includes an adjustment frame mechanism and an angular distance measurement mechanism; the adjustment frame mechanism includes a receiving transducer base 8, a transmitting transducer angle adjustment frame 3, an adjustment frame base 6 and an adjustment threaded rod 5, and the angle distance measurement Mechanism: including angle dial 2, receiving transducer position scale 9 and sending transducer adjustment frame position scale 10;
[0034] The ultrasonic receiving transducer 7 is connected to the center of the bottom of the test device housing 12 through the receiving transducer base 8 and moves up and down. The ultrasonic receiving transducer 7 faces directly above, and the ultrasonic receiving transducer 7 is fixed on the receiving transducer base. 8, the receiving transducer bas...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a small-diameter gas velocity measurement test device and a test method thereof. An ultrasonic receiving transducer is connected to a test device shell through a receiving transducer base. A transmitting transducer angle adjusting frame is connected to the bottom of the test device shell through adjusting frame bases, and an ultrasonic transmitting transducer is mounted on the transmitting transducer angle adjusting frame. An adjusting threaded rod passes through the test device shell to be fixedly connected with the transmitting transducer angle adjusting frame. The test device shell is internally equipped with an angle dial, an adjusting frame position scale and a receiving transducer position scale which are used for detecting angle and displacement. During test, the ultrasonic transmitting transducer is always facing the ultrasonic receiving transducer. The test device shell is internally equipped with four temperature sensors and is provided with two gas inlet-outlets. The small-diameter gas velocity measurement test device of the invention has the advantages of simple structure, strong practical application, simple operation, low cost, high precision and the like. Measurement error of a small-diameter gas velocity measurement device is reduced.
Description
technical field [0001] The invention relates to a test device for sound velocity measurement and a test method thereof, in particular to a test device for small-diameter gas sound velocity measurement and a test method thereof. Background technique [0002] In the current gas sound velocity measurement technology, the commonly used method for measuring gas sound velocity is the propagation time method. The technical method is to calculate the average sound velocity in the gas medium by measuring the transmitted and received ultrasonic signals when the distance between two ultrasonic transducers is known. When measuring on a long path, the time difference method can achieve high measurement accuracy. When the diameter of the pipe to be measured becomes smaller, a high-precision clock signal is needed to accurately calculate the sound propagation time, so as to ensure the accuracy of the measurement. Moreover, there is a "dead zone" in the response time of the propagation ti...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01H5/00
Inventor 刘铁军周民
Owner CHINA JILIANG UNIV