Zhengzhou Butterfly Valve Factory Co., Ltd.

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To teach you the correct repair and maintenance of valves and butterfly valves

Release time:2012-11-3 8:53:29 Source:Zhengzhou Butterfly Valve Factory Co., Ltd. Browsing times:get_hits(178,1,0,"show_i_hits")

Repair and maintenance should be the correct valve and butterfly valve
Is the fluid valve control system components, with a cut-off, regulation, guide, preventing countercurrent, regulator, shunt the functions of pressure relief or overflow. Valves for fluid control systems, from the most simple to the extremely complex cut-off valve of the automatic control system used in a variety of valves, the varieties and specifications of various. The valve can be used for the control of air, water, steam, all kinds of corrosive medium, mud, oil, liquid metal and radioactive medium, such as various types of fluid activity.
Most of the domestic industry to new for old forms, the change valve when the waste away or sold. Especially with flange valve industry. And swap under high pressure, high temperature, large valve to fix, but do not know how to repair. The majority also stay in manual repair stage. It can be said that China's valve repair industry, waste and can obtain the benefits are enormous. A power station will be built every year tens of thousands of turbine valve and bypass valve. Plant only 1 1992 from Germany into the grinding machine, the rest are manual operation, not only inefficient, but also the precision is not up to the requirements. High pressure relief valve and bypass appearing leakage, power plant cannot repair to Zhejiang repair effect is not ideal. In recent years, along with the various units gradually started an independent economic accounting, reduce the cost, from the management staff to first-line repair workers are gradually aware of the importance of the repaired valve, because this can save of money is extremely impressive. However the repaired valve is not a simple repair, also including the use of accurate repair method and fine grinding and repairing equipment.
Because the valve repair and testing ideas and lack of equipment, currently in the domestic only nuclear power plant can basically in each shutdown inspection period for all valves are tested. Bad repair is a preventive repair, for the full set of equipment and the safe operation and the service life of the valve is very bad, the potential emergency shutdown accident risk is great, the loss is huge. For example: Tianjin Petrochemical 1 sets from a full set of German production equipment entrance, production since 1981 to 1996 has never been tested in 1996, was found to have several hub filler valve leakage, and the German manufacturers no longer produces this kind of special valve, if the reorder. Not only the price is high, and the delivery period is very long, bring huge economic loss. Therefore, the industry of high temperature and high pressure valves of the preventive maintenance and repair measures, is the solution of valve leakage and prolong the service life of the most economical and reliable ways.
If no maintenance of valve repair case, once the leakage, damage is serious, which not only increases the difficulty of repair, and often even have lost the possibility and value of repair. Therefore, for the organization and management to improve the valve repair work, not only the staff should have corresponding consciousness, more important is the prevention and maintenance measures, namely regular valve check ( for example, relative to the outside of the sealing of the valve, the valve in the closed state closed etc.). Prophylactic repair valve is the key in the first valve leakage, valve repair immediately, because the flow of medium even in extremely small sealing surface damage cases, also in a short period of time to cause the sealing surface of the large area of damage, resulting in expensive repair costs.

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