Service Scope:

1. Laboratory centralized gas supply system pipeline engineering, encompassing the entire system's installation and commissioning, including design, selection, product supply, maintenance, and technical support.

2. Installation of ultra-pure gas conveying systems, specialty gas cabinets (GC, GR), distribution boxes (VMB, VMP), and secondary piping construction services.

3. Gas Pressure Monitoring and Alarm System, installation and commissioning of gas concentration monitoring and alarm control systems.

4. Installation of laboratory pure water pipeline supply systems, design and installation of laboratory wastewater treatment systems.

5. Valve Components: Automatic regulating and controlling equipment for various gas supply systems, gas regulators, valves (diaphragm valves, ball valves, needle valves) in various grades of stainless steel pipes (EP grade, BA grade), safety valves, check valves, flame arresters, couplings, precision filters, and various pressure gauges.

Gas Source Cylinder Room Design Description 

• Equipped with a semi-automatic switching system to ensure continuous gas supply. Guarantees the continuity of the experiment.

• Utilize multi-bottle gas supply to ensure gas consumption.

Bottles are arranged in a centralized manner for convenient refilling operations.

• No bottles in the lab, saving space and eliminating a hazard source.

• Equipped with a safety valve for guaranteed safe operation.

• Nitrogen blow-off function and venting capabilities ensure gas purity.

• Features low-pressure alarm, alerting users to replace the cylinder when the pressure drops below the operating level.

• The flammable gas design features a PLC control system, enabling联动 of the flammable gas alarm, emergency shutdown, and fan. Ensures gas safety usage.

• Different gases are packed in different materials to ensure purity.

• Different connection methods (VCR, couplings, welding) are used based on the type of gas.

• The high-pressure section is controlled by high-pressure valve 1 to ensure gas safety.

Monitoring System Design Description

• The gas cylinder room is equipped with gas concentration leak detectors and emergency shut-offs. In the event of harmful gas leakage in the cylinder room, the concentration detection alarm will trigger an audible and visual alarm, simultaneously sending a signal to the exhaust valve to activate the fan for air exchange, ensuring safe gas supply.

• The gas alarm uses a 4~20mA signal and is certified EX-1ICT6 explosion-proof. Enhances safety level.

• All signal lines are made with 4-core shielded cables to prevent signal interference.

• PLC internal signal input terminals are pre-assigned, providing expandability and real-time display of concentration/pressure values.

• The box is equipped with a touch screen that displays the image simultaneously with the host computer. The operating system is Windows XP, which is user-friendly.

Design based on technical specifications: 

GB50235-2010 Code for Construction of Industrial Metal Pipeline Engineering

GB50184-2011 "Code for Acceptance of Construction Quality of Industrial Metal Pipeline Projects"

GB50236-2011 Code for Construction and Acceptance of Field Equipment and Industrial Pipeline Welding Engineering

JGJ 91-93 "Code for Architectural Design of Scientific Experimental Buildings"

GB50031-1991《C₂H₂Station Design Standards

GB50177-2005《H2Website Design Standards

GB50030-2007 "Code for Design of Oxygen Station"

GB 50029-2014 "Code for Design of Compressed Air Stations"

SH3063-1999 "Design Specification for Detection and Alarm of Combustible and Toxic Gases in Petrochemical Enterprises" - Laboratory existing conditions requirements and other relevant standards and specifications.

Function Column/Pipe Shaft Description 

• All connecting pipelines are welded using digital welding technology, ensuring safe use. The unused gas in this layer is equipped with reserved outlets in the pipeline well, facilitating the addition of gas lines in the future.

Flammable gases are equipped with fire extinguishers in the pipeline wells, enhancing the safety factor.H2、C₂H₂、CH₄Valves for pneumatic control systems are designed and linked with PLCs. Each gas installation features a floor master control valve.

• Select pipelines of different sizes based on varying gas consumption.

• The spacing of gas pipeline supports shall not exceed 1.5 meters. The supporting distance is determined based on the smallest internal diameter of the gas pipeline.

Design specifications for instrument room piping valves 

Each lab must have individual valve control.

For instruments requiring separate pressure adjustment, a separate valve must be installed at the gas outlet point on the workbench to control it.

All gas export points are equipped with stainless steel valves and connected to pressure and flow regulators.

• The H2 uses a VCR-style connector, while other gases are connected using a sleeve type.

Rooms with combustible gases are equipped with a combustible gas alarm system linked to a PLC.

Gas enters the main pipeline in the room, and the installation of a gas purification system can enhance the purity of the gas.