20 ton industrial boiler

Dezhou City, Shandong Province, located in northern China, the winter heating livelihood security is the top priority. According to statistics, the main city such as the German city of existing heating 20 ton industrial boiler 63 units, for the protection of the safe operation of the winter heating boiler, the past few days, the German city Bureau of Quality Supervision special equipment inspectors to carry out a comprehensive examination of special law enforcement actions against these heating boilers.

Check the main content around the registration and inspection of boilers, operator's safety if the holder case posts, etc to focus your heating boiler operating conditions, in particular the various safety accessories and safety devices especially by the attention of inspectors. By the inspection activities, it may be within the control range as much as possible, to ensure the safe use of heating boilers.

The improvement of 20 ton industrial boiler thermal efficiency is considered by many users. It is believed that this problem is the research direction that every boiler manufacturer has been studying. When many users operate the boiler, they often find some new problems in the actual production process, but among all the problems, the most troubling thing is the phenomenon of higher exhaust temperature and lower thermal efficiency of the boiler. This phenomenon seriously affects our normal work, so what can we do to improve its thermal efficiency? What we need to know about this is that the best fit for low-temperature characteristics is synthetic molding. However, most of the synthetic molds are biphenyls, both of which are composed of biphenyls Complex benzene derivatives, whose vapors or their volatiles are highly carcinogenic, are strongly advised to choose oil-based products. Secondly, in the process of meeting the low temperature performance, the product also has a relatively high flash point requirements. In general, engineers recommend that the low-temperature opening flash point should not be below 200 ℃. Through the continuous research and improvement of its equipment by professional manufacturers, it is found that in order to improve its thermal efficiency, it is necessary to increase the heating surface at the tail of the boiler, such as air preheater and economizer. However, when the backhaul temperature of the organic heat carrier furnace body is very high, the economizer can not be installed, but the air preheater can only be installed to alleviate the situation. So if the boiler does not exchange heat with other low-temperature heating systems, the only way to improve energy efficiency is to add air preheaters. After adding air preheater, the velocity of flow can be increased accordingly, so as to ensure the boiler to work safely, reliably and stably, and the thermal efficiency of boiler equipment will be increased accordingly.

(10)What are the common faults of 20 ton industrial boiler safety valve

When the valve leaks under the normal working pressure of the equipment, the leakage of medium in the disc and seat sealing surface of the boiler safety valve occurs in excess of the permitted degree, and the continuous leakage of the medium will also destroy the hard sealing material. Therefore, when the working medium is a steam safety valve, the sealing performance is considered to be qualified if it is invisible to the naked eye at the outlet end and can not be detected under the specified pressure value.

2, the leakage phenomenon at the joint surface between the upper and lower valve bodies of the valve body joint face leakage, the main causes of this leakage are as follows: a, the bolt tightening force of the joint face is insufficient or the tight deviation, resulting in bad sealing surface of the joint surface. B, the sealing surface of the joint face is not good. B, the sealing surface of the joint surface is not good. The tooth-shaped gasket of the valve body joint surface does not conform to the standard. C, the flatness of the valve body joint surface of the boiler safety valve is too poor or the sealing failure is caused by the hard impurity gasket.

3, the phenomenon that the main safety valve does not operate when the impulse safety valve is actuated is usually referred to as the rejection of the main safety valve. The failure of the main safety valve seriously affects the safe operation of the equipment and may cause serious accidents.

4. The main causes of this failure are as follows: on the one hand, the leakage of steam from the piston chamber of the main safety valve becomes larger or smaller, although the impulse safety valve has returned to the seat. However, there is still a high pressure of steam in the pipeline and piston chamber, and the force to push the piston downward is still great, so the return of the main safety valve is slow. The method to eliminate this fault is mainly solved by the opening of the open throttle valve and the increase of the throttle aperture. Both the opening of the throttle valve and the increase of the throttle aperture cause the steam left in the pulse tube to be discharged rapidly. Thus, the pressure in the piston is reduced, and the pressure in the piston is reduced. The thrust acting on the piston decreases rapidly, and the valve core returns to the seat rapidly under the action of the upward thrust of the steam medium in the header and the upward tension of the spring of the main safety valve itself. On the other hand, too much friction between the moving parts of the main safety valve and the fixed parts will also cause the main safety valve to return slowly. The solution to this problem is to control the clearance between the moving parts of the main safety valve and the fixed parts within the standard range.

5. The low return pressure of the safety valve has great harm to the operation of the boiler. Too low return pressure will result in a large number of media overtime discharge, resulting in unnecessary energy loss.

6. The flutter relief valve of the safety valve is called the flutter of the safety valve, which is called the flutter of the safety valve during the discharge process. The occurrence of the flutter phenomenon is very easy to cause the fatigue of the metal, decrease the mechanical properties of the safety valve, and cause serious equipment hidden trouble. The main causes of vibration are as follows: on the one hand, the improper use of valves, the selection of valve discharge capacity is too large (relative to the required discharge), The elimination method should be to make the rated displacement of the selected valve as close as possible to the required discharge of the equipment. On the other hand, because the diameter of the imported pipe is too small, smaller than the inlet diameter of the valve, or the resistance of the imported pipe is too large, the elimination of the side When the valve is installed, the inlet pipe diameter of the valve is not small or the resistance of the inlet pipe is reduced. It is also a factor that causes valve flutter because the resistance of discharge pipe is too large, which can be solved by reducing the resistance of discharge pipe.

Steam 20 ton industrial boiler operation procedures each year must have a steam boiler which runs annually necessary formalities, what does? Boiler is a kind of special equipment, under "Special Equipment Safety Supervision Regulations", units engaged in the installation of the boiler is required to obtain the appropriate level of boiler installation license qualifications and prior to installation required to inform the local quality supervision department for procedures need to accept the installation process to install supervision, inspection and the implementation of performance testing agencies approved. 1, issued by the institute boiler room design drawings. 2, issued by the local construction bureau construction building consents. 3, steam boiler installation qualification certificate (different tonnage and pressure, qualifications are not the same). 4, local boiler boiler installation inspection agencies of this book. 5, a certificate of steam boilers and accessories, installation drawings, inspection certificate and so on. 6, steam boiler quality requirements: the chemical treatment using the outer pot steam boiler feedwater principle, allows the use of pot-treatment when conditions do not permit. The pot must supervise the scaling, corrosion and water boiler when the dosing process. Boiler water quality requirements should be consistent with the relevant provisions of GB1576-2001 "industrial boiler water quality," the.

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