(1), demand

1. Gas supply parameters: 1. Gas species: There are eight kinds of gases. 1. Gas species: There are eight kinds of gases, Ar (argon), N2 (nitrogen), L N2 (liquid nitrogen), He (helium), air compressor first floor (Air), hydrogen (H2), acetylene ( C2H2), O2 (oxygen) have separate cylinder chambers on the fourth and fifth floors respectively;

Liquid compartment: N2, Air 2; gas chamber: H2, N2, He, Air, each of a total of 16;

Temperament chamber: 8 of N2, He, Air, and H2; ICP-MS room: 3 sets of Ar, H2, and He;

Light chamber: Air, Ar, C2H2 each of a total of 12; gas, liquid, and room: N2 a total of 4;

Fluorescence chamber: 2 for He and Air; infrared carbon sulfur and oxygen nitrogen analysis room: 6 for O2, N2, and Air;

Optical chamber: 2 for C2H2 and Air; 1 for atomic fluorescence chamber: 1 for Ar;

ICP room: 1 in total; gas chromatographic chamber: H2, N2, Air, 6 in each group;

Temperament chamber: He a total of 1; color processing room: N2 a total of 2;

Oil 2 room: O2 1

2, pressure requirements: gas source - high pressure bottled gas, filled according to national standards; and Dewar (liquid nitrogen)

2.1 The use of pressure - conventional, press a decompression (≤ 0.8MPa), the terminal decompression to the required pressure of the instrument two-stage pressure regulation (required the use of the pipeline with the terminal pressure reducing valve and switch valve)

3, pipe laying method: buried line slot laying.

4. Special requirements:

4.1 Due to the large amount of nitrogen, liquid dewar should be used as the main gas supply and two high-pressure steel cylinders as spare gas supply to ensure uninterrupted gas supply and prevent the use of instruments due to the interruption of gas supply.

4.2 Part of the gas source with more gas points adopts the centralized gas supply mode of automatic switching continuous uninterrupted gas supply, terminal configuration switch valve and pressure indication

4.3 Small-flow gas source adopts single-loop busbar supply air, terminal configuration on-off valve and pressure indication

(II) Basis of preparation

1. GB50235—2010 “Code for Construction and Acceptance of Industrial Metal Pipeline Engineering”;

2. GB50236—2011 “Code for Construction and Acceptance of Field Equipment and Industrial Pipeline Welding Engineering”;

3. Working conditions proposed by the employer (pressure, flow and work continuity, etc.).

(III) Gas supply process

According to the design parameters, there are eight gases, Ar (argon), N2 (nitrogen), LN2 (liquid nitrogen) He (helium), air compressor first floor (Air), hydrogen (H2), acetylene (C2H2), O2 (Oxygen) There are separate gas cylinder rooms on the fourth and fifth floors.

The gas supply process is as follows: the gas enters the high-pressure collecting pipe from the gas cylinder through the high-pressure hose, and the pressure is reduced to 1.1Mpa after the first decompression, and reaches the laboratory instruments through the clean stainless steel gas delivery pipe.

The gas output is controlled by a switch valve or a terminal pressure reducing valve. For instruments using different pressure requirements, a second pressure adjustment is performed before entering the instrument, so that the pressure conforms to the working conditions used by the instrument.

Indoor Home Baby Monitor

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