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What are the requirements of new decoration design laboratory

Source: unknown popularity: Time of publication: 15:28, March 27, 2020
1、 Classification and responsibilities of laboratories:
Laboratories are analytical and testing laboratories, which have different attributes in schools, factories and research institutions.
The school's laboratory is a kind of teaching base for students to carry out analytical chemistry experiments, and the other is an analytical chemistry laboratory serving for scientific research, which has the nature of scientific research.
The factory has a central laboratory, workshop laboratory, etc. Responsible for the control of semi-finished and finished products in the laboratory. The central laboratory is mainly responsible for raw material analysis and product quality inspection, as well as the research, improvement and promotion of analytical methods, as well as the preparation and calibration of standard solutions used in workshop laboratories.
The laboratories of scientific research institutes not only undertake the test task of scientific research projects, but also carry out analytical chemistry research.
Laboratory decoration

 
2、 Laboratory decoration design requirements:
 
According to the needs of experimental tasks, laboratory decoration includes precious precision instruments and various chemical substances, including flammable and corrosive drugs. In addition, harmful gases or vapors are often produced during operation. Therefore, there are special requirements for the structure, environment and indoor facilities of the laboratory, which should be considered when preparing to build a new laboratory or rebuilding an existing laboratory.
Laboratory rooms are roughly divided into three categories: precision instrument laboratory, chemical analysis laboratory and auxiliary room (office, storage room, cylinder room, etc.). )。
The laboratory should be kept away from dust, smoke, noise and vibration sources. Therefore, the laboratory should not be built near the main traffic road, boiler room, machine room and production workshop (except workshop laboratory). In order to maintain good weather conditions, it should usually be in the north-south direction.

 
1. Design of precision instrument laboratory
 
The precision instrument room shall have the functions of fire prevention, shock prevention, electromagnetic interference prevention, noise prevention, moisture prevention, corrosion prevention, dust prevention and harmful gas invasion, and the indoor temperature shall be kept as constant as possible. In order to maintain the good performance of ordinary instruments, the temperature should be controlled at 15 ~ 30 ℃ and the conditions should be controlled at 18 ~ 25 ℃. When the humidity is between 60% and 70%, the instrument room with constant temperature can be equipped with double doors and windows and air conditioning.
The instrument room can use terrazzo floor or antistatic floor. Carpet is not recommended as it tends to accumulate dust and generate static electricity. The power supply voltage of Bosco large precision instrument room should be stable, and the allowable voltage fluctuation range is 10%. Auxiliary equipment (such as regulated power supply, etc. )It should be provided when necessary. To ensure uninterrupted power supply, a dual power supply can be used. Special grounding wire shall be designed. The resistance of the grounding electrode is less than 4 ω.
Due to the need for high pressure cylinders, the gas chromatography and atomic absorption chambers are located in the nearest outdoor location (north facing) where cylinder rooms can be built. The distance between the test bench and the wall is 500mm to facilitate operation and maintenance. The room should be well ventilated and the laboratory furniture should be well ventilated. A local exhaust hood is arranged above the atomic absorption spectrometer.
Microcomputer and microcomputer controlled precision instruments have certain requirements for power supply voltage and frequency. Uninterruptible power supply can be selected according to the need to prevent voltage transient, instantaneous power failure and insufficient voltage from affecting the operation of the instrument.
When designing the special instrument analysis room, the corresponding chemical treatment room should be designed nearby. It is very necessary to protect instruments and strengthen management.

2. Construction plan of chemical analysis laboratory
 
The chemical treatment and analysis of samples are carried out in the chemical analysis room. Some small electrical equipment and various chemical reagents are often used in work. Unintentional operation also has certain risks. According to these application characteristics, the design of chemical analysis room should pay attention to the following requirements:
(1) The building requires that the laboratory building should be fire resistant or made of non combustible materials, and fire resistance should also be considered for partition walls and ceilings. Windows should be dust-proof, and terrazzo should be used for indoor lighting. In the construction planning of large-scale laboratory, the door should be opened to the outside world and two exits should be set up to evacuate people in case of accidents.
(2) The water supply of water supply and drainage should ensure the necessary water pressure, water quality and water quantity to meet the needs of normal operation of instruments and equipment. The indoor main valve shall be located in a prominent position for easy operation. Sewers shall be made of acid and alkali resistant materials and floor drains shall be provided on the floor.
(3) Due to the toxic or flammable gas often produced in the laboratory work, the laboratory should have good ventilation conditions. In general, there are three types of ventilation:
① Ventilation of the whole room: exhaust fan or ventilation shaft is adopted, and the ventilation frequency is generally 5 times / hour.
(2) Local exhaust hood: it is generally installed in the place where harmful gas occurs in large-scale instruments. In order to reduce indoor air pollution, a local exhaust hood is set up above the harmful gas produced in teaching laboratory.
(3) Fume hood: This is a kind of local exhaust equipment commonly used in laboratory design. It has heat, water, lighting and other equipment. It is coated with anti-corrosion material, and can be used for manufacturing fume hood. Ventilation pipes shall be resistant to acid and alkali gas corrosion. The fan can be installed in the top machine room, and there should be a device to reduce vibration and noise. The exhaust pipe should be more than 2m above the roof. It is better to connect an exhaust fan to a fume hood. When different rooms share the same exhaust fan and ventilation duct, cross contamination will occur easily. The correct position of the fume hood in bosbo room is to place the fume hood in the place with relatively small air flow, or adopt the trough type fume hood with better effect. The height of the fume hood is 1200mm-800mm, the height of the air cabinet is 1200mm-800mm, the height of the air cabinet is 1200mm-800mm, the height of the air cabinet is 1200mm-800mm, the height of the air cabinet is 1200mm-800mm, the height of the air cabinet is 1200mm-800mm, the height of the air cabinet is 1200mm-800mm, the height of the air cabinet is 1200mm-800mm, the height of the opening is 1200mm-800. The width of the air duct behind the baffle is more than twice the width of the slit.
(4) Pipeline gas can be installed in the laboratory with gas supply and power supply conditions. Laboratory power supply is divided into lighting power supply and equipment power supply. Fluorescent lamps are used for lighting. In terms of the power consumption of the equipment, 24-hour appliances such as refrigerators are supplied separately, and the rest are controlled by the main switch. Electrical heating equipment such as ovens and high temperature furnaces shall be equipped with special sockets, switches and fuses. Bosco installed emergency lights indoors and in corridors in case of sudden blackouts at night.
(5) The test bench is mainly composed of desktop, bracket under the table top and temporary storage cabinet. For the convenience of operation, a medicine rack can be installed on the desktop, and water tanks can be installed at both ends of the table. The table is 750 mm wide, 1500-3000 mm long and 800-850 mm high, depending on the size of the room. The worktable is usually made of anti-corrosion veneer, anti-corrosion physical and chemical board, epoxy resin board or high-temperature ceramic plate. The ideal tabletop should be flat, not easy to crack, acid and alkali and solvent corrosion, heat resistance, not easy to break glassware and so on.

 
Ventilation of laboratory furniture

 
3. Auxiliary design of laboratory decoration
(1) Drug stores should not buy too many chemicals because many chemicals are flammable, explosive, toxic or corrosive. The warehouse is only used to store a small amount of recently used chemicals, which shall meet the safety requirements for storing dangerous goods. It shall have the function of preventing open fire, humidity, high temperature, direct sunlight and sunlight
(2) The flammable or combustion supporting cylinders in the gas cylinder room shall be placed in the outdoor gas cylinder room, and the gas cylinder room shall be far away from heat source, fire source and inflammable warehouse. The cylinder chamber shall be made of non combustible or non combustible materials. The wall should be explosion-proof wall, light top cover, and the door should be opened outwards. Avoid sunlight and keep good ventilation. The steel cylinder is more than 10 meters away from the open fire heat source, and the vertical and stable iron frame is set in the room to place the steel cylinder.

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