Damper spring pneumatic butterfly valve equipment unit damper transformer air compressor pneumatic butterfly valve
Spring damper is a vibration control installation sensitive to displacement. Spring pneumatic butterfly valves are mainly used for anti vibration of pipelines and equipment in nuclear power plants, thermal power plants, chemical plants, steel plants, etc. It is often used to control fluid vibration excitation (such as fluid pulsation, two-phase flow, high-speed airflow slight wind vibration, etc.). Spring pneumatic butterfly valve is a spring pre compressed pneumatic butterfly valve with damping, initial force stiffness and spring to reduce or eliminate other causes caused by medium activity, air duct, water hammer (or hammer) and seismic periodic vibration or instantaneous impact. It can improve the natural frequency of the impact pneumatic butterfly valve with the suspension spring of the vibrating tube, The interference caused by the forced vibration frequency of the pipeline can prevent the resonance phenomenon of the pipeline and reduce the additional stress caused by the pipeline vibration. 　　
The specification of damping spring depends on the selection of anti vibration force to avoid pipeline vibration. If the vibration force calculated by pipeline dynamic analysis can be based on the rigidity of the pipeline and the period of the external pipeline or influence the quality, the spring preloading with positive initial force shall be selected according to the accurate calculation of the damping spring specification. Otherwise, the size of the damping spring can be selected according to the nominal diameter of the pipe.

The pneumatic butterfly valve has good scalability. Pneumatic butterfly valves are widely used because of their sensitive pitch, good flexibility, no obstruction and stiffness, light weight, good caliber divergence, flexibility, repeated bending, good flexibility and many other advantages. The reduction of credit scope has further increased the financing difficulty of small and medium-sized pneumatic butterfly valve enterprises, especially small and micro pneumatic butterfly valve enterprises, and the financing cost remains high. The above two "costs rise too fast" squeeze the profit space of pneumatic butterfly valve enterprises. Pneumatic butterfly valve enterprises still bear a heavy burden, the charges for enterprises are still too high, and illegal charges still exist. At present, China's current financial system is difficult to deal with the "bottleneck" problem of small pneumatic butterfly valve enterprises with limited financing channels, small scope and high cost. Since last year, in order to stabilize the achievements of the response to the financial crisis, China has implemented a prudent monetary policy, and has improved the bank reserve ratio for 12 consecutive times. This year, it has improved the bank interest rate for two consecutive times. However, at present, small and medium-sized pneumatic butterfly valve enterprises are confronted with the rapid rise of production costs, the general rise of raw materials, the rapid rise of labor costs, the difficulty of employment and labor shortage, and the general rise of wages of employees in the Yangtze River Delta, Pearl River Delta and other coastal areas.
What is plastic coated pneumatic butterfly valve? Plastic coated pneumatic butterfly valve is used as wire and cable maintenance pipe for wires, cables and automatic instrument signals, with specifications ranging from 6mm to 150mm. Ultra small diameter stainless steel hose (inner diameter: 3mm~25mm) is mainly used for the maintenance of the sensing line of fine optical ruler and industrial sensor line. It has good flexibility, corrosion resistance, high temperature resistance, wear resistance and tensile resistance. 1. Product introduction of plastic coated pneumatic butterfly valve Plastic coated pneumatic butterfly valve is a PVC coated pneumatic butterfly valve used for cable covering along the concave convex surface of the pipe wall core on the pipe wall of stainless steel hose and galvanized pneumatic butterfly valve. It is made of plastic coated pneumatic butterfly valve material. The plastic coated pneumatic butterfly valve is widely used in electric power, chemical industry, metallurgy, light industry, machinery and other industries due to its light weight, excellent flexibility, connection strength with accessories, electrical performance, oil resistance, splash resistance and other advantages. The plastic coated hose has specifications from 6mm to 200mm, and its color is black or gray. Special specifications and colors can be customized. 2 Product characteristics of plastic coated pneumatic butterfly valve. Product material: (inner layer) stainless steel hose or galvanized hose and special insulation treatment; (Outer layer) PVC raw materials (anti ultraviolet, anti-aging) Product color: black, gray, other colors can be selected, working temperature: - 40 ℃~+160 ℃, product characteristics: 1. The plastic coated hose has excellent waterproof, insulation, and tensile properties. 2. PVC materials are used for the surface of plastic coated hose, and fire retardant is added to the PVC plastic. 3. The plastic coated hose is of single button and double button structure, which increases the tensile strength and is not easy to break or deform. 4. The plastic coated hose has good bending performance and smooth internal structure, which is easy to pass when threading wires and cables. 5. The plastic coated hose is waterproof, oil and corrosion resistant, and has good sealing performance. The products have beautiful appearance and tight structure, and are widely used in the wiring of fine instruments, power, wire, plastic, rubber and other industries for wire and electrical maintenance. 3. Application scope of plastic coated pneumatic butterfly valve. Railway, locomotive, transportation system engineering, air conditioning, various machinery, automatic control equipment, power plant, chemical industry, power transmission and distribution system, communication system, ships, buildings, exposed local wiring maintenance inside and outside the plant. 4. Application of plastic coated pneumatic butterfly valve. Maintain wires and cables and reach insulation, waterproof, and can promote cable bending beauty. 5. The plastic coated pneumatic butterfly valve industry is facing the challenge. Plastic coated pneumatic butterfly valve is a traditional industry in China's hardware manufacturing industry. Under the background of economic globalization, plastic coated pneumatic butterfly valve industry tries to change its thinking, meet the needs of consumers at different levels at home and abroad, and complete the sound and rapid development of plastic coated pneumatic butterfly valve industry. Tongfeng pneumatic butterfly valve is to strengthen cooperation with pneumatic butterfly valve equipment enterprises, eliminate backward equipment, and gradually adopt microcomputer management and semi-automatic consumption and processing; Second, increase investment in technological transformation, especially some large enterprises should actively introduce and digest international advanced processing centers; Third, we should work hard on product appearance disposal and processing technology to improve the durability and decoration of products. 2011 is the first year of the "12th Five Year Plan". For the plastic coated pneumatic butterfly valve industry, it is both a challenge and an opportunity. With the rapid development of pillar industries such as instruments, meters and sensors and the continuous expansion of demand for pneumatic butterfly valves in defense, security, finance and other systems, the plastic coated pneumatic butterfly valve market contains great potential and unlimited business opportunities.
The plastic coated pneumatic butterfly valve industry accelerated the adjustment of product structure. The "12th Five Year Plan" is a critical period for the development and promotion of the plastic coated pneumatic butterfly valve industry. The plastic coated pneumatic butterfly valve industry will continue to adhere to the market orientation and accelerate the adjustment of product structure. In recent years, the market demand for high-end plastic coated pneumatic butterfly valve products has increased at an annual rate of more than 50%, and the import plastic coated pneumatic butterfly valve products have also increased at an annual rate of 30%. Tongfeng pneumatic butterfly valve has increased efforts to adjust the product structure, focusing on high-tech, high value-added products and car locks; Work hard on independent intellectual property rights to form my central technology and patents, accelerate the transformation of scientific and technological achievements, and meet the needs of consumers at different levels.