Pressure measurement device applied to environments with non-standard atmospheric pressure

Abstract

The invention relates to a pressure measurement device applied to environments with non-standard atmospheric pressure. The pressure measurement device comprises a shell body, a measuring spring tube, a connecting rod, a gear transmission mechanism, a pointer and a dial plate; the fixed end of the measuring spring tube is fixedly arranged in the shell body; the moving end of the measuring spring tube drives the gear transmission mechanism through the connecting rod; the pointer is fixedly arranged on a center shaft of the gear transmission mechanism; the dial plate is fixedly arranged in the shell body corresponding to the pointer; a compensating spring tube is arranged at a position symmetrical to the measuring spring tube; one end of the compensating spring tube and the moving end of the measuring spring tube are fixedly arranged; the other end of the compensating spring tube and the fixed end of the measuring spring tube are fixedly arranged; and the standard atmospheric pressure is sealed in the compensating spring tube. The pressure measurement device provided by the invention has a simple structure, a scientific and reasonable design and lower cost and can accurately measure the internal pressure value of a space to be measured in an environment with non-standard atmospheric pressure, thus the pressure measurement device is a pressure measurement device which is safe and reliable and is applied to the environments with the non-standard atmospheric pressure.

Description

technical field [0001] The invention belongs to the field of pressure measuring devices, in particular to a pressure measuring device applied in a non-standard atmospheric pressure environment. Background technique [0002] With the rapid development of my country's economy, the urbanization process is further accelerated, the scale of the city is expanding day by day, and the underground construction is becoming more and more frequent, especially when the shield machine is used to excavate underground tunnels. The pressure situation inside the shield machine, especially the pressure situation in the control room where the observer is located and the monitored control room, and the two control rooms are generally in a non-standard atmospheric pressure environment, and the pressure measurement device commonly used in a standard atmospheric pressure environment is An instrument used to measure positive pressure based on atmospheric pressure. If this type of pressure instrument i...

AI Technical Summary

Problems solved by technology

It will lead to inaccurate readings, which will affect the judgment of the observers on the pressure of the monitored control room, and cause great potential safety hazards

[0003] A comparison document was found in the search of the prior art, its patent number is 200420013049.2, the patent name is multi-spring tube pressure gauge, the authorized announcement number is CN2760529Y, and the application date is December 25, 2004. The comparison document multi-spring tube The pressure gauge discloses a bracket, a movement, and at least two C-shaped spring tubes. The movement includes at least one set of gear transmission mechanisms. It is possible to measure the pressure values ​​of multiple devices under test through one pressure gauge, that is, under the premise of achieving the same function, the pressure gauge in this reference file is smaller in size and more compact in structure, but there is no indication that it can be used in a non-standard atmospheric pressure environment Values ​​measured under standard atmospheric pressure

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