Clean laboratory power supply system

Clean laboratory power supply system

There are various types of laboratories and equipment in the clean laboratory building. In addition to maintaining the specific environmental power consumption of the clean laboratory, the power supply system must also meet the special power consumption requirements of various existing and future instruments. , for centrifuges, freezers, low temperature refrigerators with compression...

Text label: clean laboratory, medical clean laboratory, clean laboratory power supply system

Clean laboratory power supply system

There are various types of laboratories and equipment in the clean laboratory building. In addition to maintaining the specific environmental power consumption of the clean laboratory, the power supply system must also meet the special power consumption requirements of various existing and future instruments. , For centrifuges, freezers, low-temperature refrigerators with compressors and other instruments, the current required for their motors to start is often several times the working current, and the voltage fluctuation of the line is often affected at the moment of startup. There are many high-power instruments used in the above, which will cause the instruments to work abnormally; microelectronic instruments such as microbial electrical testers, biochemical analyzers, blood analyzers, computers, etc. have relatively high requirements on power quality, and high-power instruments are frequently started. Pulse voltages are generated, and these pulse voltages can easily damage the original or cause failures such as reading fluctuations and data loss. Therefore, for the design of the power supply system of the clean laboratory building, in addition to the need to reserve enough surplus power to meet the needs of future development, it must also provide an uninterrupted regulated power supply. Based on the distinctiveness of the clean laboratory, the power supply system of the clean laboratory building has its own uniqueness in terms of power supply, wiring, lighting, safety and so on. The electricity consumption of clean laboratory buildings is usually more than 2 times the existing electricity consumption.

One, clean laboratory power supply

Uninterrupted clean laboratory regulated power supply is an important part to ensure the stable operation of the instrument. In order to avoid the instability of the mains supply voltage or sudden power failure affecting the normal operation of the laboratory, it is usually necessary to add a spare power supply and a voltage stabilizer. The most commonly used UPS power supply in the laboratory is divided into two categories, one is ordinary The UPS of the UPS only plays the role of uninterrupted power supply, but cannot stabilize the voltage; the other type is the online UPS power supply, which can not only provide uninterrupted power supply but also stabilize the voltage. Different UPS power sources can be selected according to the actual situation and instrument requirements. Zhongjing Global Purification undertakes supporting services such as indoor clean laboratory engineering, purification pharmaceutical cleanroom engineering design and construction, and purification equipment installation in various industries.

Second, clean laboratory power supply circuit

1. In order to make these high-power instruments work without interfering with each other, generally a separate line is set up for high-power instruments, and microelectronic instruments and high-power electrical appliances cannot be connected to the same line.

2. For precision instruments that require uninterrupted power supply, a regulated UPS power supply should be provided; for laboratories that require uninterrupted power supply such as culture rooms and biosafety clean laboratories, a special power supply with double insurance must be used.

3. Each clean laboratory is equipped with three-phase electricity and two-phase electricity, and a main power control switch is set near the door of the clean laboratory, which is convenient to lead wires from the corridor, repair and turn on or cut off the indoor power supply. For equipment that still needs to stand by after the cleaning experiment is stopped, it should be connected to the dedicated power supply line to avoid affecting the work due to cutting off the total power supply of the laboratory.

4. Fully consider the power required for all instruments in the clean laboratory and the number of electrical sockets required. The laboratory bench is provided with a certain number of three-phase and two-phase power sockets. The power socket circuit is equipped with leakage protection appliances, and the sockets should be set away from water. Pots.

5. The designed power supply should fully consider its reasonable layout, safe and convenient use. When designing the power supply, in addition to considering the current use needs, the development of the clean laboratory in the future should be considered, and there should be enough expansion. Meet the needs of clean laboratories.

6. In places with humidity, corrosive gas, steam, fire hazard and explosion hazard, power distribution equipment with corresponding protective performance should be selected.

7. Due to the presence of corrosive gases in the chemical laboratory, copper core wires should be used for power distribution wires. Physics labs can use aluminum conductors.

8. The grounding system of the clean laboratory can ensure personal safety and the normal operation of the instrument. The general grounding types include safety protection grounding, anti-static grounding, DC grounding, and lightning protection grounding.

9. When there are two or more power supplies with different voltages or frequencies in the same scientific clean laboratory building (room), power distribution protection devices should be installed separately and clearly distinguished or marked. When powered by the same-distribution protection device, there should be good physical isolation. Lines with different voltages or frequencies should be laid separately and not in the same pipe. The power lines of the same equipment or clean laboratory assembly line equipment and control loops without anti-interference requirements are allowed to be laid in the same pipe.

10. For high-rise or multi-storey scientific experimental buildings with many lines, the vertical lines should be laid with pipeline wells. Pipeline wells should be set up separately for strong and weak current pipelines. When laying in the same pipeline well, it should be laid on both sides of the pipeline well. As shown in Figure 6-36, Figure 6-37, and Figure 6-38.

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