Residual natural gas pressure relief utilization device in municipal natural gas supply system and LNG system
By designing ball valves and pressure testing pipelines in municipal natural gas supply systems and LNG systems, the safe, sealed depressurization and recycling of residual natural gas were achieved, solving the safety hazards of increased pipeline pressure and natural gas waste after the LNG system was shut down, and realizing the environmentally friendly utilization of natural gas.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GANSU XUSHENG DISPLAY TECH CO LTD
- Filing Date
- 2026-05-07
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the residual liquefied natural gas after an LNG system is shut down vaporizes at ambient temperature, causing pipeline pressure to rise, which poses safety hazards and results in natural gas waste and environmental pollution.
A residual natural gas depressurization and utilization device for municipal natural gas supply systems and LNG systems was designed. By setting up ball valves and pressure measuring pipelines, residual high-pressure natural gas in the high-pressure side pipeline can be directly introduced into the low-pressure side pipeline through the pressure regulator and connected to the municipal gas supply pipeline for safe and closed depressurization and recycling.
It achieves safe, closed-loop depressurization and recycling of residual natural gas, avoiding environmental pollution and gas waste caused by direct discharge, and eliminating the risks caused by frequent safety valve tripping or manual operation.
Smart Images
Figure CN122407982A_ABST