Radial corrugated pipe diaphragm-freezing-preventive pressure gauge with fluorescent indications on dial scales

A pressure gauge and bellows technology, which is used in elastic deformation gauge-type fluid pressure measurement, fluid pressure measurement, and measurement devices, etc. pressure capacity and other issues to achieve the effect of extending the service life

Inactive Publication Date: 2013-03-27
洪河
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the pressure gauge installed on the open-air water pipeline encounters a low temperature environment, the water entering the inner cavity of the spring tube of the pressure gauge will freeze and expand, causing permanent deformation of the shape and structure of the spring tube inside the pressure gauge, causing the pressure gauge to be in a normal pressure state. The pointer of the pressure gauge cannot fall to zero, so that the pressure gauge loses the ability of accurate pressure measurement
When the ambient temperature rises and falls repeatedly near the freezing point, the water in the spring tube inside the pressure gauge will frequently melt → freeze, and the shape of the spring tube inside the pressure gauge will be further expanded and deformed by the ice. The spring tube is broken, causing an accident

Method used

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  • Radial corrugated pipe diaphragm-freezing-preventive pressure gauge with fluorescent indications on dial scales
  • Radial corrugated pipe diaphragm-freezing-preventive pressure gauge with fluorescent indications on dial scales
  • Radial corrugated pipe diaphragm-freezing-preventive pressure gauge with fluorescent indications on dial scales

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Experimental program
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Embodiment Construction

[0019] In order to further describe the present invention, specific examples of implementation are illustrated below in conjunction with the accompanying drawings.

[0020] First install the bellows 2-5 on the lower part of the concave opening 2-2 on the sensing diaphragm of the pressure gauge. The bellows 2-5 is filled with antifreeze, and the bellows 2-5 is installed with a pressure sensor with pressure transmission capability. The diaphragm 2-4 is provided with a process hole 2-3 on the side of the pressure gauge sensing diaphragm part 2-1. When the lower joint 1-5 of the pressure gauge indication part is screwed into the upper recessed opening 2-2 of the pressure gauge sensing diaphragm part, the pressure sensing diaphragm 2-4 is clamped between the lower joint 1-5 of the pressure gauge indication part and the pressure gauge Between the recessed opening 2-2 on the sensing diaphragm part. While screwing in part of the lower joint 1-5 of the indication part of the pressure ...

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Abstract

The invention aims to provide a radial corrugated pipe diaphragm-freezing-preventive pressure gauge with fluorescent indications on dial scales. When the pressure gauge is used and mounted on a high-pressure water pipeline, water easy to freeze is prevented from entering a spring pipe in the pressure gauge, and the pressure gauge can measure pressure normally within a certain low-temperature range. Meanwhile, pressure numerical values and indicator needles of the pressure gauge have fluorescent indication functions.

Description

Technical field: [0001] The invention relates to the technical field of pressure gauge devices, in particular to the technical field of pressure gauge antifreeze. Background technique: [0002] In the process of oil extraction in oil fields, pressure gauges are often used in the open air, especially in water injection wells. Before the pressure gauge is installed and used in the factory, the inner part of the spring tube inside the pressure gauge is a cavity containing air and has a certain volume. When it is installed on the high-pressure water injection well pipeline for use, the pressure inside the water pipeline will make The water inside the water line will enter the cavity of the pressure gauge spring tube. When the pressure of the water pipeline is higher, the volume of the air in the spring tube will be compressed smaller, and the volume of the water inside the water pipeline will enter the inner cavity of the spring tube. If the pressure gauge installed on the ope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L7/06G01L7/08G01L19/08G01L19/06
Inventor 洪河
Owner 洪河
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