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Dynamic calibration device of soil pressure gauge

A dynamic calibration, earth pressure gauge technology, applied in measuring devices, measuring fluid pressure, instruments, etc., can solve the problems of affecting the calibration quality, uneven force on the induction plate, etc., and achieve the effect of stable force

Pending Publication Date: 2021-12-21
HENAN PROVINCE INST OF METROLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with the existing earth pressure gauge calibration device is that the loading force output by the hydraulic cylinder is a rigid loading force, and the induction plate is prone to uneven force, which affects the calibration quality

Method used

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  • Dynamic calibration device of soil pressure gauge
  • Dynamic calibration device of soil pressure gauge
  • Dynamic calibration device of soil pressure gauge

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Embodiment Construction

[0020] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field of the present invention. Terms used in the description of the present invention are only for the purpose of describing specific embodiments, and are not used to limit the present invention.

[0022] V...

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Abstract

The invention relates to a dynamic calibration device of a soil pressure gauge. The device comprises a device cylinder body, a loading piston and a mounting piston are assembled in the device cylinder body in a guiding and sealing manner, a pressure gauge mounting structure is arranged on the mounting piston, a first liquid chamber is formed between the loading piston and the mounting piston, a second liquid chamber is formed between the bottom of the device cylinder body and the mounting piston, the dynamic calibration device further comprises an oil return tank connected with the second liquid chamber, a flow regulating valve is arranged between the second liquid chamber and the oil return tank, the device cylinder body is further provided with a piston driving mechanism for driving the loading piston to move at a constant speed, the first liquid chamber is connected with a first pressure transmitter, a waterproof adapter is arranged on the cylinder body wall of the device cylinder body, the inner side of the waterproof adapter is a connecting end used for being connected with a cable of a pressure gauge, and the mounting piston is in sealing fit with the inner cavity wall of the device cylinder body through a first sealing ring. According to the dynamic calibration device of the soil pressure gauge, the induction plate can be uniformly stressed.

Description

technical field [0001] The invention relates to a dynamic calibration device of an earth pressure gauge in the field of calibration and verification. Background technique [0002] The earth pressure gauge, also known as the earth pressure box, is composed of a back plate, an induction plate, a signal transmission cable, a vibrating wire and an exciting electromagnetic coil, etc. effective monitoring equipment. [0003] As a monitoring sensor, the earth pressure gauge needs to be calibrated regularly according to the corresponding standard requirements. The traditional earth pressure gauge calibration device uses a hydraulic cylinder to directly apply force to the sensing plate of the earth pressure gauge. A load cell is arranged between the sensing plate and the sensing plate. The output loading force of the hydraulic cylinder is used to simulate the soil pressure in the use environment, and the calibration of the earth pressure gauge is realized by comparing the readings ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L27/00
CPCG01L27/005
Inventor 孙钦密王晓伟张中杰张霞王振宇李海滨任翔冯海盈邹炳蔚李贤达赵辉徐凯李淑香何力人李磊孙诗雨刘权单海娣王世闯李雪飞程媛媛贾会杨倩刘莹张晔李柯言王慧胡雯杨楠王皓赵楚亚石少许王雪杨王丽玥
Owner HENAN PROVINCE INST OF METROLOGY
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