For laboratory decoration design, electrical engineering work can be summarized as strong current design and weak current design. Among them, the former includes electricity for instruments and lighting sockets. The latter includes networks, data communications, broadcasting, and video surveillance.

Electrical Engineering of Laboratory Decoration Design_General Contracting of Laboratory Decoration Design and Construction_Sanren Laboratory Service Integrator

I. Strong current design for laboratory electrical engineering

In terms of the strong current design in the laboratory decoration design, the overall policy is to first summarize the equipment power, and then make statistics based on each function room, floor, and the entire building. The specific analysis will be given below.

Each functional room in the laboratory must be equipped with a separate terminal distribution box. For important equipment, it cannot be connected in series with other sockets, but a separate circuit must be set aside for later use and maintenance. In addition, it should be noted that the floor distribution box should be set up in a dedicated power distribution room and be supervised by a special person.

The laboratory must be equipped with an uninterruptible power supply (UPS) in order to better protect the equipment, but the current parameters and uninterruptible power supply power must be determined according to the power parameters of the equipment. In addition, it is recommended to consider the future development direction of the laboratory in order to reserve space for later changes. In this way, the parameters can be planned in time when new equipment is added later, and then the distribution load can be fully reserved.

According to the needs of the laboratory, install the power socket on the wall or the ground. If it is installed on the ground, the socket must be waterproof. In order to reduce ground wiring, the socket location should be close to the powered equipment. If conditions permit, you can set up an independent power supply room, and the room is equipped with dedicated air conditioning, after all, the uninterruptible power supply has a lot of heat and noise.

II. Weak current design of laboratory electrical engineering

In terms of the weak current design in the laboratory decoration design, in addition to meeting the modern development needs, it must also conform to the technological development trend. After all, we are in the Internet age, and it is very important to do a good job in this area.

To be equipped with multiple network communication ports and at least one telephone interface in the main room of the laboratory. It is also necessary to equip a camera at the main channel of the laboratory for management and monitoring. If conditions permit, cameras can be equipped in important rooms.

III. Common specifications of laboratory electrical engineering

1. Laboratory electricity mainly includes two parts: lighting electricity and power electricity. Power electricity is mainly used for the power supply of various larger equipment, elevators, air conditioners, etc.

2. Power supply: point of use: place where electrical sockets are needed, such as side tables, central stations, fume hoods, etc. (the fume hood must also retain the power supply of the fan) Specification: generally reserved power supply at the point of use without special requirements The line specification is 220V, 10A; but some experimental benches need to use three-phase power or two-phase power with larger current for placing large instruments such as gas chromatography, etc., they must be reserved according to the user’s experimental power consumption; the fan power supply of the fume hood is usually A three-phase five-wire power cord is used. If a group of test benches uses more electrical instruments, the power reserve points should be increased or the power cord specifications should be increased accordingly.

3. Electrical accessories: The selection range of laboratory power sockets are: 10A, 13A, 16A, 20A; at the same time, leakage protection switches and overload protection switches must be configured. The location of the power socket should be far away from the water basin, gas, hydrogen and other nozzles, and will not affect the placement and operation of the laboratory bench. .The wire trough is multifunctional steel wire trough (mainly used for reagent rack) and PVC wire trough, equipped with universal universal socket (mainly used on side table and central table).

4. Generally, the gas phase chamber is equipped with helium (He) and nitrogen (N2); the GC-MS chamber is equipped with nitrogen, hydrogen, and oxygen. The connecting pipe fittings on the hydrogen pipeline must be connected and then welded to avoid the possibility of leakage. All pipelines must be tested for airtightness after installation, and oil must be removed before use. Due to the small pipe size and small pipe spacing, the installation process can be adjusted according to site conditions to ensure that the spacing is not less than 45mm.

5. Location requirements: when using the side platform, reserve at the position against the wall, the center point is not more than 80mm away from the wall; when using the central platform, reserve a proper position on the center line of the experimental platform, and the relative centerline error does not exceed 50mm; fume hood The power supply is reserved at its location behind the wall, the center point is no more than 80mm away from the wall, and the length of the reserved power cord is no less than 500mm.

6. The latest concept of the laboratory is to treat the entire laboratory as a fume hood. How to effectively control the intake and exhaust to achieve both safe and economical results is of vital importance. The most economical and effective method is to set up local exhaust equipment for experiments that cause pollution sources. This equipment mainly includes: fume hood, atomic absorption hood, universal exhaust hood, ceiling exhaust hood, countertop exhaust hood, etc. The most commonly used is the fume hood.

7. Special gas distribution system laboratory gas mainly includes: non-combustible gas (nitrogen, carbon dioxide), inert gas (argon, helium, etc.), flammable gas (hydrogen, carbon monoxide); highly toxic gas (fluorine, chlorine); combustion Gas (oxygen), etc. Among the above gases, except for non-combustible gases and inert gases, other gases are not allowed to enter the laboratory, and can be connected to each laboratory through a gas pipe.

8. When the gas cylinders are packed in the cabinet, it is strictly forbidden to install two flammable gases in the same cabinet; two inert gases or non-combustible gases can be in the same cabinet, and harmful gases are discharged from the system.