Chemically sealed diaphragm body for pressure sensor

By designing an insulation component in the pressure sensor to heat the internal liquid, the problem of pressure deviation caused by liquid contraction in low-temperature environments is solved, enabling accurate pressure measurement and convenient maintenance in low-temperature environments.

CN224365686UActive Publication Date: 2026-06-16ANHUI MICROCHIP NUCLEAR INSTR CO LTD
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANHUI MICROCHIP NUCLEAR INSTR CO LTD
Filing Date
2025-08-27
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

When the chemically sealed diaphragm of the existing pressure sensor is used in a low-temperature environment, the internal liquid shrinks, causing the pressure received by the pressure sensor to deviate from the actual data.

⚗Method used

A chemically sealed diaphragm body for a pressure sensor is designed, comprising a housing assembly, a diaphragm assembly, a mounting assembly, a thermal insulation assembly, a positioning assembly, and a sensing assembly. The thermal insulation assembly heats the internal liquid to maintain the operating temperature, while the positioning assembly facilitates easy installation and removal, ensuring sealing performance and sensing accuracy.

🎯Benefits of technology

It effectively avoids pressure deviation caused by liquid contraction at low temperatures, ensuring that the sensor accurately measures pressure in low-temperature environments, and is easy to maintain and install.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The utility model relates to pressure sensor technical field, and disclose a kind of pressure sensor chemical sealing diaphragm, including shell assembly and the installation component of being installed on shell assembly, diaphragm component is equipped between shell assembly and installation component, sensing component is installed in shell assembly, heat preservation component is equipped on the outside of shell assembly, positioning component is installed on heat preservation component, wherein the design of heat preservation component can make that the fluorinated liquid in main casing is always at working temperature, avoid the phenomenon of thermal expansion and cold contraction caused by excessively low temperature to cause the deviation of pressure received by sensor, simultaneously, the design of positioning component can quickly install or remove heat preservation component from the lower portion of shell assembly, facilitate subsequent maintenance installation operation.
Need to check novelty before this filing date? Find Prior Art