A valve is one of the most important parts in the field of power production. Its main function is to regulate the flow and pipeline transportation. Some problems and failures will often occur in daily use. If it is not checked and repaired in time, there will be more serious production and economic consequences due to its important role. Therefore, strengthening the repair and maintenance of valves plays a very important role in the power production industry.
In the manufacturing of the power industry, valves have brought a lot of convenience to it, and the scope of use is also extensive, such as effective control of the transmission flow and effective connection of adjacent pipelines. Also, the valve plays a very active role in the early construction and later maintenance of the pipeline. In fact, as long as the equipment is used, failures will occur, which also applies to a valve. Therefore, once the valve fails, it will not only affect the quality of power production, but also affect its production efficiency. Relevant technical personnel must carry out regular inspection and maintenance, which will make economic losses caused by failures of valves controlled to a minimum.
Common faults and main causes of valves
1.1 Failures caused by the quality of the valve not meeting the standard and the installation error
In the process of electric power production, the quality of the valve directly determines the level of its role. Therefore, the manufacturer must strictly control its quality level to ensure that each valve produced can meet the relevant regulations and use standards in terms of quality. In the process of purchasing, the valve also needs to be strictly tested, and it can only be put into use if there is no problem. However, some enterprises choose some inferior valves with bad quality in order to obtain more economic benefits and reduce their input costs, thus increasing the hidden danger of failure. In addition, under the premise of ensuring that the valve does not have any problem, it is also necessary to improve its installation requirements and adopt correct installation techniques to avoid failures of valves caused by incorrect installation.
1.2 Too frequently use and not timely maintenance of valves
Not only valves, but all equipment has a certain limit in the process of use. If there is a high frequency of use, the damage and aging speed of the valve will be accelerated. Most of the raw materials are highly corrosive, especially in the field of power production, which greatly increases the uncertainty of the valve in use, and also has a certain impact on the service life of the valve.
1.3 Incorrect installation of valve bodies
For the welding of the main body in valve equipment, it is necessary to have exquisite welding technology so as to reduce the probability of valve failures caused by welding. When the repair welding of the valve body is carried out, if there are certain problems in the welding technology, the probability of valve failures such as cracking of valve bodies and gaps between the valve body and the base will increase.
1.4 Failures caused by improper operation
The staff who control the valve must have good operating skills, because only with a certain operating ability, can the error rate be reduced in the actual operating process. However, because some technicians do not operate in accordance with the relevant specifications in the actual operation process, excessive force occurs for the operating lever. The valve protection body cannot provide over-force protection in time, causing the valve to fail.
1.5 The mistake in the packing of the vavle
When the packing is added, we must pay attention to its amount. If the addition is too much, the compaction is great, which will increase the failure rate of the valve during use.
