Key points of high purity gas pipeline design: (1) to the gas of different characteristics, to plan an independent supply area, generally divided into three zones: corrosive/toxic gas, combustible gas, inert gas area, will be of the same nature gas concentration to strengthen management and combustible gas zone to special planning blast walls and leakage, if space is insufficient, can consider to place the inert gas and toxic and corrosive gas zone. (2) piping design need to consider the transportation distance, the longer the distance, the higher the cost, the higher the risk, usually more reasonable design flow rate for 20 ml/S, combustible gas in less than 10 ml/S, toxic/corrosive gas less than 8 ml/S, the respect is designed in use, you need to consider using peer pressure and pipe diameter size, the former is related to gas characteristic, the latter pipe diameter usually point to the use of the 1/4 "~ 3/8". (3) according to the distribution of gas equipment, the pipe network of high purity gas shall not be too large or too long; It is advisable to use an unclosed ring pipeline and continuously discharge a small amount of gas at the end of the system, so that there is always high purity gas circulation in the pipe network and no pollution of high purity gas will occur due to "dead space". (4) should reduce not flowing gas in the pipeline "dead space", and should not be a blind pipe, in the special gas storage cylinder and gas equipment should be set up between purging valve control device and control device, is used to control the blowoff valve switch sequence and system, to ensure the safety of the gas supply system, reliable operation and prevent "dead zones" stranded pollutant formation, reduce the gas purity. (5) for gas equipment with different purity requirements for high purity gas, it is advisable to adopt a graded high purity gas conveying system; The same grade conveying system can also be used, but a terminal gas purification device is arranged near the gas equipment with high purity requirements. (6) in order to detect the purity and impurity content of the high purity gas, the conveying system shall, in addition to the necessary continuous detection instruments, such as the analyzer for measuring the content of water or oxygen impurities, also set up the detection sampling port for regular sampling, so as to conduct sampling at the specified time and analyze the content of various impurities in the high purity gas. (7) in the production of integrated circuits of sub-micron level, it is required to supply high purity gas of grade 10-9. In order to ensure the gas purity at the end gas processing equipment, the impurity content in the gas should be increased (including dust particles) are controlled within specified values, usually with a terminal purification device or a terminal high-precision gas filter in front of the device
1. Store in a clean and dry place, and store in a sealed place. Pay attention to moisture-proof, water-proof, heat-proof, forbid to mix with strong oxidizer. Can be stored in tin or stainless steel containers. 2. Use aluminum or galvanized iron drums or bakelite lined tanks for storage. Keep away from moisture, heat and water in storage and transportation. Do not mix glycerin with strong oxidants (such as nitric acid, potassium permanganate, etc.). Store and transport according to the general flammable chemical regulations.
No s-type cuttings, c-type right-angle cuttings and vertical combined Angle cuttings shall be used for connection of galvanized air duct. No snap bite shall be used for air ducts with air cleanliness grades of 1 ~ 5. The distance between the flange rivets of the air duct of the purifying air conditioning system shall be less than 100mm, and the distance between the air duct flange rivets of the air cleaning class of 1-5 shall be less than 65mm. Before the processing of galvanized air duct, the cleaning fluid should be used to remove oil stains and dust on the plate surface. The cleaning fluid should be a neutral cleaner that does not damage the plate surface, does not produce dust after drying, and has no harm to human body. After making the ventilating duct, it should be cleaned with cleaning fluid. After cleaning, the phenolic board should be sealed in time after the white silk cloth is wiped and checked to meet the requirements. The inner wall of the colored coated steel wind pipe should be smooth; Plate processing shall not damage the coating, the damaged parts should be coated with epoxy resin. Galvanized duct The bite joint, riveting joint and flange flanging seam of galvanized wind pipe shall be sealed up strictly with sealant or other sealing measures according to the requirements of design and cleanliness. The sealing material should be made of isobutyl rubber, neoprene rubber and denatured silica gel. The sealing surface of the joint of the wind tube plate shall be located on the positive pressure side of the wind tube wall. Galvanized duct production place should be relatively closed, the production site should be laid not easy to produce dust soft materials Galvanized ducts shall have fewer longitudinal joints and fiberglass ventilation ducts, and shall not have transverse joints. Galvanized duct connection bolts, nuts, washers and rivets shall be galvanized or other anticorrosive measures, shall not be the use of blind rivets.
Main considerations from the technical point of view: 1. 2. Dimensional stability; 3. Water absorption; 4. Quality reliability; 5. Construction convenience. 1. Insulation performance The smaller the thermal conductivity of thermal insulation materials in Beijing, the thinner the insulation layer thickness and the smaller the weight of the design will be. Basically, materials with thermal conductivity greater than 0.045 are not likely to be used in buildings with high energy conservation requirements. 2. Dimensional stability The better the dimensional stability of the insulation material, the more difficult it is for the insulation layer to bend, empty drum, crack and seepage, etc., which plays an important role in prolonging the service life of the insulation layer and improving the safety of the insulation layer. Beijing insulation material 3. Water absorption Thermal insulation material in the state of water absorption will increase the weight of the insulation layer easy to cause the phenomenon of falling off, and after water absorption of inorganic thermal insulation material insulation performance will decline sharply. So the requirement of heat preservation material to bibulous rate is higher should be bibulous rate extremely low waterproof material. 4. Quality reliability Inorganic thermal insulation material has the characteristics of stable size, stable thermal insulation performance, long service life, stable safety performance and so on. 5. Construction convenience At present, many new thermal insulation materials do not have the corresponding construction convenience, the better the construction convenience of thermal insulation materials the shorter the construction period, the more labor, the more money! In fact, the initial requirement for building external wall insulation is insulation, and later due to the high-rise of the building and fire, fall off and other safety issues, on the basis of insulation proposed fire safety requirements.
The exhibition space can be divided into physical space and virtual space, as well as fixed space and variable space. The physical space scope is clear, the border is clear, the privacy is strong; The virtual space is implicit, that is, the uncertain space under the virtual space, also known as "psychological space". Due to the diversity of display mode, product category and display purpose, display space has flexible and changeable combination characteristics. But no matter how it changes, the exhibition space presents the following characteristics Time and space constitute space Appearance design is time limited. The display space is not only the space between objects, but also the separation of time and space, which constitutes the space form of "time space" which blends with each other. The openness and activity of the exhibition space The exhibition space should be designed to provide people with the best way to spread information, absorb the public in an all-round way, and strive to make hosts and guests communicate and attempt to reach differences. As a result, exhibition Spaces are more open than living and religious Spaces. The exhibition space is a moving space composed of "people and things". The function of exhibition is through the mutual transmission of information between people and exhibits, through the passage of time, the mutual exchange and communication between people and things, in a specific place. Thus constituted the "man-object-environment" space process. (3) group function and timeliness of exhibition space The diversified integration of exhibition's communication function, communication function, marketing function, time effect function, entertainment function, service function, etc. determines the spatial combination of various exhibition places and the diversity of space function, that is, the group function and time effect of exhibition space.
As we all know, exhibition hall design is a kind of exhibition design. The definition of exhibition is an exhibition and demonstration activity aiming at conveying specific information by means of integrating the best spatial relationship of human, object, field and other elements. Exhibition design refers to the visual art of all exhibitions and displays, including the indoor and outdoor environment planning of commercial sales space and service space such as shopping malls, hotels and supermarkets, and beautification design. Exhibition hall is the postcard of an enterprise, the exhibition hall of the overall size, tonal collocations, the design methods have to be perfect, competition standard, can make business enterprise outshine others in the industry, the evalsuation criteria of the success of an enterprise is not look at its exhibition hall is very gorgeous, very luxury, but a look at its ability to communicate, it expresses the concept of the exhibition hall is to determine the functional and exhibits itself connotation. So how should the enterprise exhibition hall design thought and design concept reflect? First of all, as a designer of an exhibition design company, he/she should understand the corporate culture of the client company and the market positioning of its products, and further convey this information to visitors. To put it simply, we want to make the visitors to the exhibition hall look and sound pleasing to the eye and fully mobilize the emotions of the audience. Secondly, excellent exhibition hall design can help and strengthen the position occupied by enterprises and their products in the market, which requires designers to complete two tasks: first, the exhibition hall pattern and display content he designed must be recognized by the audience as soon as possible; Secondly, we must give the exhibition hall and exhibitors a spiritual image. In order to achieve these two purposes, the exhibition hall must have a certain degree of creativity, which is not only reflected in the design ideas, but also through the display equipment, through the following items to explain: First, the copywriting of the exhibition hall design is the most important step at the beginning of an exhibition hall planning project, and the formal design ultimately determines the visual effect of the exhibition hall in front of the audience. Second, in the design part of the exhibition hall, we require a reasonable layout, because the object of the exhibition hall service is people, so when dividing the layout, the shenzhen exhibition hall design company should take into account the distribution of visitors, so as to avoid the occurrence of congestion or damage to the exhibition hall. Thirdly, corporate culture should be included in the design of corporate exhibition hall. It is necessary to use the most intuitive means to convey corporate image, culture, products and other corporate components to visitors, so that visitors can accept and identify with the enterprise. The fourth exhibition hall design company must clarify the positioning of the enterprise, the enterprise status is very important, it will affect the later display effect, according to the positioning of different enterprises in the exhibition hall design highlight the focus of the enterprise.
XPS extruded polystyrene insulation board insulation board is extruded type, it is based on polystyrene resin material and other raw materials and inclusion, mixed into the catalyst at the same time, heating and extrusion pressure forming and rigid foam plastic board. Its scientific name is adiabatic with extruded polystyrene foam plastic (XPS), XPS with obturator honeycomb structure, this structure make extruded board has a very low water imbibition (hardly water absorption), low thermal conductivity coefficient and high pressure. Extrusion board waterproof moisture-proof function analysis The texture of extruded board is relatively light, chongqing insulation material manufacturers use and operation is very simple and fast, in the process of transportation, installation and cutting is not easy to attack damage. More valuable is the function of extrusion board is very good, chemical properties are very stable, will not evaporate out of any harmful substances, the human body and the surrounding environment will not attack adverse effects, the whole production production and application process will not constitute any industrial pollution, is a very heat preservation material. The waterproof of extruded board and moistureproof sex also is a must, itself is not bibulous, sufficient prevent occurrence leakage, permeate, frost, calm wait for the problem that other plank often can break out. The texture of extruded plate is relatively light, the use and operation is very simple and fast, in the process of transportation, installation and cutting is not easy to break. More valuable is the function of extrusion board is very good, chemical properties are very stable, will not evaporate out of any harmful substances, the human body and the surrounding environment will not attack adverse effects, the whole production production and application process will not constitute any industrial pollution. Because the extruded plate is a tight closed hole structure caused by continuous kneading, the density, water absorption, thermal conductivity and steam permeability are significantly higher than other plates. The heat preservation and insulation of extruded board is a magic weapon to win. The obturator ratio of extruded plate is more than 99%, which can form a vacuum layer, fully prevent the heat loss caused by air flow, and ensure the stability of its insulation effect. In addition, the resistance to high strength pressure also makes the extruded plate widely recognized. The compressive strength of extruded plates of different types and thicknesses is as high as 150-500kpa, and the impact resistance function is also reflected.
The thickness of galvanized air pipe bite plate should be within the range of the rules of various specifications. If it is less than the thickness, it is easy to have the defects such as pulling crack and wrinkling, because of the significant increase of bending force, abnormal damage of forming roller, overloading of transmission system and boring. In the dust removal system: Dust Removal device collection and transportation, can use galvanized air pipe. In the exhaust system: restaurants, restaurants, hotels have a lot of kitchen smoke, need to exhaust, the use of galvanized duct is appropriate, good strength, economic and practical. In the air conditioning system: Galvanized Air Duct can be affixed with insulation materials, beautiful surface. In Bulk Material Transport: pneumatic transport system, some of the finer loose particles of materials, can be used galvanized duct transport, low cost, good effect. In the ventilation system: Supply Fresh Air and exhaust, will be harmful gas out of the outdoor, outdoor fresh air to indoor. The strength of stainless steel plate than ordinary steel plate, with stainless steel plate to bite, first to do forming test, to avoid equipment overload operation, the formation of excessive wear or mechanical problems. Because of the bad plasticity of aluminum plate, it is easy to crack when the bite is formed. The forming test should be done before construction. After passivation treatment, dyeing or coating with light protection agent, the zinc coating of galvanized air pipe can obviously improve its protection and decoration. And the fire-proof function of the galvanized air duct is mainly reflected in that it is non-flammable, but one thing to note is that whether its insulation layer is burned depends on the material, we suggest galvanized duct material to use centrifugal glass wool and other non-combustible insulation materials.
High Purity Argon is a rare gas used as a shielding gas for arc welding (cutting) of stainless steel, magnesium, aluminum and other alloys. It is also used to make steel, aluminum, titanium and zirconium. Argon discharge will be issued after the Purple Light, but also used in lighting technology and filled fluorescent lamps, photoelectric tubes, lighting tubes and so on. What problems should I pay attention to when storing? Store in a well-ventilated Warehouse, away from the fire and heat sources; gas cylinders should have anti-fall measures. Cryogenic liquid storage tanks larger than 10 M3 should not be placed indoors. Bottled gas products filled with high-pressure gas, use before the decompression and decompression. Packaged cylinders have a useful life and all expired cylinders must be sent to the department for safety inspection before they can be used again. When exhaust gas is used in each bottle, the residual pressure in the bottle should be kept at 0.5 MPA, and the minimum pressure should not be less than 0.25 MPA. The valve of the bottle should be closed to ensure gas quality and safe use. Bottled gas products shall be classified and stacked during transportation, storage and use. It is strictly forbidden to stack inflammable gas and combustion-supporting gas together. Keep away from open fires and heat sources. Do not approach the ignition source, do not touch the oil, do not expose to the sun, do not throw do not hit, do not arc or arc in the cylinder, and do not rough handling. FIRE-FIGHTING METHODS: non-flammable, turn off the air supply. Spray water to cool the container and, if possible, remove it from the fire to an open space. Storage and transportation points to note in the storage and transportation process, loading and unloading light to prevent collision damage and high temperature. Argon is non-corrosive and can be used at room temperature for carbon steel, stainless steel, copper, copper alloys and other common metals as well as common plastics and elastomers. Polytetrafluoroethylene and polytrifluoroethylene polymers are commonly used as gaskets and diaphragms at low temperatures.
Heavy-duty shelf in the current market is a very widely used shelf! Excellent carrying capacity, convenient disassembly and assembly structure allows it to adapt to various types of warehouses, warehouses in the storage of goods can achieve manual and forklift coordination, to a certain extent, it improves the work efficiency of the staff inventory. The heavy-duty shelf is also a general term for a class of storage shelves with strong carrying capacity. The main points are: low cost, safe and reliable, easy assembly and disassembly, it is a kind of shelf form widely used in large, medium and small-sized warehouses. It is most widely used in manufacturing, third-party logistics and Distribution Center. The main structure is: heavy-duty shelves from the column, Beams, cross-bracing, diagonal and self-locking Bolt Assembly, simple and stable structure, post card and column connection with the Safety Pin can ensure that the beam under the impact of external forces do not fall off. The preferred material for the CROSSBEAM is high quality square steel, there are special cold-rolled p-type closed beam, column design determines the random inventory and flexibility