Service Scope:

1. Laboratory centralized gas supply system pipeline engineering, encompassing the entire process from design, selection, product supply, maintenance, to technical support and system installation and debugging.

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

3. Gas pressure monitoring and alarm system, installation and debugging 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 in various stainless steel pipe grades (EP, BA), including diaphragm valves, ball valves, needle valves, safety valves, check valves, flame arrestors, couplings, precision filters, and various pressure gauges.

Design Specifications for Gas Source Cylinder Room 

• Utilizes a semi-automatic switching system to ensure continuous gas supply. Guarantees the continuity of experiments.

• Multi-bottle gas supply ensures sufficient gas usage.

Bottles are arranged in a cluster for easy refilling operations.

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

• Equipped with a safety valve for safe operation.

• Nitrogen blow-off and venting functions ensure gas purity.

• Features low-pressure alarm function; alerts users to replace cylinders when the pressure falls below the operating level.

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

• Different gases are contained in materials specific to each, ensuring purity.

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

• The high-pressure section uses a high-pressure valve 1 to control and ensure safe gas usage.

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, the concentration detection alarm will trigger an audible and visual alert, simultaneously signaling the exhaust valve to activate the fan for air exchange, ensuring safe gas supply.

• Gas alarms utilize a 4~20mA signal and are rated EX-1ICT6 for explosion-proof. Enhanced safety level achieved.

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

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

• The box is equipped with a touch screen that displays the same image as the host computer. The operating system is Windows XP, making it easy to operate.

Design based on technical specifications: 

GB50235-2010 "Code for Construction of Industrial Metal Pipeline Engineering"

GB 50184-2011 "Code for Acceptance of Construction Quality of Industrial Metal Pipeline Projects"

GB50236-2011 "Code for Construction and Acceptance of Welding for Field Equipment and Industrial Pipelines"

JGJ91-93 "Code for Architectural Design of Scientific Experimental Laboratories"

GB50031-1991《C₂H₂Website Design Specifications

GB50177-2005《H2Station Design Specifications

GB50030-2007 "Design Code for Oxygen Stations"

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

SH3063-1999 "Design Specification for Detection and Alarm Systems of Flammable and Toxic Gases in Petrochemical Enterprises" - Research Laboratory's Current Conditions Requirements and Other Relevant Standards and Norms.

Functional Column/Pipe Chute Description 

• All pipeline connections are made with digital welding technology for safety assurance.预留 outlets are installed in the pipeline shaft for the gas that is currently unused in this layer, facilitating future additions to the gas routes.

Flammable gases are equipped with fire arresters in the pipeline shaft, enhancing safety factors.H2、C₂H₂、CH₄Pneumatic control valves ready for design,联动with PLC. Each gas installation is equipped with a floor main control valve.

• Select pipe sizes according to varying gas consumption.

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

Design specifications for indoor pipe valves for instruments 

Each laboratory must have individual valve control.

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

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

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

• Rooms with combustible gases are equipped with combustible gas detectors linked to a PLC.

• Gas enters the main pipeline in the room, and a gas purification system is installed to enhance the purity of the gas.