Optimization and improvement of the article and comparison, it is believed that the oxygen, moisture, and other harmful gases in the air are easily chemically reacted with the aluminum with strong activity, so that the aluminum fins are oxidized and corroded, and the heat exchange performance is significantly reduced. It is more likely to produce conditions that satisfy its chemical reaction in a high temperature and humidity state. The VK50-3 air compressor cooler is in the form of a casing lamination, with the pipe running away and the shell moving out. The heat exchange tube is made of copper, and the heat exchange sheet is made of aluminum. The working temperature of the air compressor cooler is between 30-120 °C. According to the geographical location and climatic conditions of the unit, the air is often accompanied by steam and acid gas into the compressor. The working conditions of the cooler are extremely poor. . In addition, because the fin gap of the air compressor cooler core is less than 1.5mm, and the equipment has a long-term operation, the scale is deep, although it can not be completely cleaned by high-pressure pickling, it can not fundamentally improve heat exchange. effect.
At present, the large heat exchangers for large compressor coolers in the industry are mostly made of aluminum and copper. The thermal conductivity of copper and aluminum is 398W/mK and 236W/mK, respectively, and the specific gravity is 8.9m3/t and 2.7m3/t. Copper has good thermal conductivity. It is much better than aluminum for making cooler fins. The thermal effect, so the best alternative to air compressor aluminum fin heat exchangers is to use copper fin heat exchangers.
K——heat exchange coefficient tl—inlet temperature t2—the outlet temperature can be seen from the above formula. According to the different heat transfer coefficients of copper and aluminum, the copper and copper used under the same temperature drop and heat exchange can be calculated. The heat exchange area of ​​aluminum is different. The heat exchange area of ​​the copper heat exchange sheet is 60% of aluminum to achieve the heat transfer effect of the aluminum sheet.
In order to ensure the successful transformation, the appearance and installation structure and size of the cooler must not be changed. The installation dimensions and sealing parts must be ensured to be rigorous and reliable, and there should be no air short circuit or water and gas leakage. The indicators meet the requirements of compressor design performance. After analyzing 4 studies, we believe that it can be achieved by reducing the number of heat exchanger sheets and increasing the gap between the heat exchange sheets while maintaining the original cooler core structure. This is beneficial to the cleaning of the dirt of the cooler, and can reduce the accumulation of dirt between the heat exchange sheets, prolong the cleaning cycle, and can also increase the air flow area and reduce the resistance of the cooler B, and finally achieve the increase of the air. .
Air compressor original cooler core aluminum wing) '"S: 3780〗 丨', thickness is 0.2mm, the gap between the fins is 1.46mm. Designed and calculated by a professional heat exchange equipment company to choose copper After the heat exchange, the number of eight-fifth brothers is 3350, which is 430 less than the thickness of the heat exchange sheet. The 2mm remains unchanged, the gap between the fins and the runners becomes 1.68mm, which is more than the original flow. The channel gap 1.46mm is increased by 0.22mm. The theoretical calculation of air overflow area is increased by 12%-15%. The empty K machine gas supply 3: can be increased by a certain amount than the original design value.
After the replacement of the filter core in 4/air compressors in 2011, the gas flow rate of the 15500Nm3/h unit reached 84000Nm3/h, and the operating indexes of the air compressor can reach the design value or even the excellent design value. The performance of the first-stage cooler is improved, and the performance of the retracting machine has been significantly improved. The air supply: K machine gas supply £1: 67000Nm3/h before the cooler core replacement is increased by 丨7000Nm3/h. Increased discion, 15500Nm3 / h system. The production range of helium, nitrogen and argon of the unit was increased by 2000Nm3/h, 3000Nm3/h and 110Nm3/h respectively. Especially after the expansion and transformation of the 2 knives of the company in 2011, the smelter nitrogen was increased by 5: The gas supply capacity of helium, nitrogen and argon of the 15500Nm3/h unit has been effectively released, which can fully meet the increased gas smelting of the smelter. Requirements, the performance of the equipment has been significantly improved, and the operating conditions of the air compressor are also very stable.
Through the performance index of the air machine of the 15500Nm3/h unit before and after the 2011 transformation, the æ°”:, the nitrogen production S:, the argon production R, the empty machine consumption and the test, the nitrogen and argon unit consumption calculation Analysis "j comparison, that the empty iK machine through the cooler transformation is very successful. In addition to the various performance indicators have been greatly improved, the equipment thrift energy-saving effect Hebei Metallurgical Society 2013 annual air separation professional academic exchange meeting before and after the transformation of the air compressor average unit consumption index comparison table equipment operating parameters transformation before transformation Annual air compressor kwh oxygen production m3 nitrogen production m3 argon gas production m3 oxygen single consumption kwh/m3 nitrogen single consumption kwh/m3 argon single consumption kwh/m3 Through this transformation, we believe that the correct selection of compressor cooler and The structural design plays a very important role in the performance of the compressor. It must be combined with the local climatic conditions and the fluid medium of the compressor to make a reasonable choice. Once the design is improperly selected, it will restrict the performance of the equipment and even the normal equipment. Running brings some hidden dangers. Although the price of copper in the market is currently high and the capital investment is high, the equipment capacity increase and power saving benefits brought about by the transformation are considerable. It provides a reference for the selection of the new H air compressor cooler in the future. It has certain value for the transformation of the current low efficiency air compressor cooler in the industry.
At present, large-scale air compressors in the metallurgical, petrochemical and other industries are widely used, and the effect of the heat exchange of the cooler on the equipment consumption is very obvious. The raw material of the air separation equipment is air, and the wood is used as the main part in the cost of the enterprise. Therefore, the energy saving equipment section is particularly important. The social benefits are obvious.
Rotary damper is mainly aimed at damping control of the motion of some parts in the direction of rotation, ensure that the rotary motion is achieved in soft, silent and safe environment. Rotary damper according to the rotation angle, rotary damper can be divided into more than 360 degrees circular rotation angle and limit rotation angle. Different types according to the installation type of the product, rotary damper can be divided into Barrel Damper, Vane Damper, stop damper, Gear Damper , Disk Damper and Shaft Damper etc. ABD rotary dampers are used to dampen drives, control speed, and many other applications.
Our rotary dampers are widely used in automobile interior decoration, household electric appliances, furniture, invisible screens, theater seats and bathroom products, etc. ABD damper is conducive to performing structural movement in soft, silent and safe environment, mitigating impact load, avoiding strike damage, prolonging mechanical life, reducing noise disturbance, improving product quality and improve customer satisfaction.
Full inspection of all our products torque , guarantee the stability of the product torque. The company's salesmen after years of working in the market, ensuring the timeliness of feedback and customer service. Our company has a leading R & D team in the peer, our product has several patents, ensuring a steady stream of new product development for the company. At present, our company developed products are the first to peer object of imitation.
If you have any questions, please contact with us directly and we have the perfect after-sales service and technical support. We look forward to working with you side by side, to be a long-term partner whom you can trust.
Rotary Damper,Friction Rotary Dampers,Small Rotary Dampers,Large Rotary Dampers
Shenzhen ABD Equipment Co., Ltd. , https://www.abddamper.com