Piston-type gas flow standard device

A gas flow and standard device technology, which is applied in measuring devices, test/calibration devices, liquid/fluid solid measurement, etc., can solve the problems of not many piston-type gas flow standard devices and difficult controller design, etc., and achieve external factors The effect of less influence, short test time and high precision

Inactive Publication Date: 2011-09-07
海盐美捷测试仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difficulty of controller design and other reasons, there are not many piston-type gas flow standard devices in China at present.

Method used

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  • Piston-type gas flow standard device

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Experimental program
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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] Such as Figure 1 to Figure 6 As shown, the load-bearing plate 7 is installed on the bracket 1, the upper end of the piston cylinder 3 is connected with the load-bearing plate 7, and the upper end of the load-bearing plate 7 is equipped with a sleeve 8, which is installed in the piston cylinder 3 and connected to the flange 5 and the piston 4 through the piston rod. After the connected piston rod 6 passes through the sleeve 8, the upper end of the piston rod 6 is connected to the lower end of the screw rod 11. The upper end of the piston rod 6 is equipped with a guide plate 19, and the two sides of the guide plate 19 are respectively sleeved on the guide rods installed in the sleeve 8. 9, a linear bearing 10 is installed on the guide plate, and the linear bearing 10 forms a sliding fit with the guide rod 9, and the lower part of the guide rod 9 i...

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PUM

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Abstract

The invention discloses a piston-type gas flow standard device. A bearing plate is mounted on a bracket, the upper end of a piston cylinder is connected with the bearing plate, the upper end of the bearing plate is equipped with a sleeve, after a piston rod which is mounted inside the piston cylinder and connected with a piston passes through the sleeve, the upper end of the piston rod is connected with the lower end of a lead screw, the upper end of the piston rod is equipped with a guide plate two sides of which are respectively sleeved in a guide rod mounted inside the sleeve, a linear bearing mounted on the guide plate is in slide fit with the guide rod, the other end of the lead screw passes through the sleeve and is then connected with an encoder through a shaft coupling, a reducer and a stepping motor, the lower end of the piston cylinder is connected with an end cover which is provided with an exhaust pipeline, and the side face of the exhaust pipeline is provided with joint holes for mounting a temperature sensor and a pressure sensor. The standard gas of the device is generated by means of the motion of the piston, has the characteristics of being small in the impact from external factors, high in precision, reliable in operation, convenient in operation, short in detecting time and the like, and is particularly suitable for the detection of soap film flowmeter, suspended body flowmeter and diaphragm gas meter.

Description

technical field [0001] The invention relates to a gas flow standard device, in particular to a piston type gas flow standard device. Background technique [0002] At present, the verification of soap film flowmeter, rotameter and membrane gas meter is mainly completed by the bell type gas flow standard device and the standard meter gas flow standard device. The accuracy of the verification is not high and the reliability is poor, especially in The performance is more prominent in the verification of small flow flowmeters. [0003] The piston-type gas flow standard device has the advantages of high measurement accuracy, stability and reliability, and easy automation of detection. However, because the piston flow verification device is an electromechanical combination, the accuracy of processing and matching is high. Due to the difficulty in controller design and other reasons, there are not many piston-type gas flow standard devices in China at present. Contents of the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
Inventor 程佳李泉明沈文新王文林
Owner 海盐美捷测试仪器有限公司
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