What are the consequences of boiler drums drying water on the boiler?

The boiler is boiled and then watered, which usually causes the metal pipe of the boiler to cool sharply and burst, resulting in a large amount of steam leakage, which will not cause the furnace**. The factor of furnace ** is often that after the furnace is extinguished, the fuel in the pulverizing system is not cleaned in time, and the deflagration occurs after ignition, resulting in a sharp rise in the pressure in the furnace, which makes the furnace deformed and a large amount of coal ash leaks. Because the furnace is surrounded by a furnace wall composed of metal such as a water-cooled wall and an economizer, although the furnace is powerful, it generally rarely poses a direct threat to the person, after all, the water-cooled wall resists the shock wave generated by the furnace.

The unit is in trial operation, and the safety door is set from time to time, but it is a false water level, knowing the change trend of the water level, the boiler will not be in a dry pot state, and the boiler body will not be damaged, and it is extremely controlled, and the water level will not seriously exceed the limit. For a 400-ton boiler, it is estimated that it takes only 10 seconds from the interruption of the feed water to the dry boiler of the steam drum. At this time, the water is added, and the situation in the furnace is unknown.

Maybe it will explode, maybe it will be lucky. The consequences are unimaginable. Taking the SG-400 steam drum boiler as an example, the steam drum specification:

The inner diameter of the steam drum is meters, the length of the cylinder part of the steam drum is meters The radius of the head of the steam drum is meters The height from the normal water level to the limit water level is meters The gravity of saturated water under pressure is, then, the amount of water from the height of the steam drum water level from the normal water level to the limit water level is about: g = ( square of ) t; The evaporation time from the normal water level to the limit water level is about: t = seconds.

From the calculation results, it can be seen that the time left for the boiler to run after the feed water is interrupted is less than half a minute, which is even shorter in actual operation, because the internal equipment of the steam drum still occupies a part of the volumetric space. The above views are for reference only.

No**! However, due to the uneven heating, the heating surface of the steam drum will produce great stress, resulting in the deformation of the steam drum and the leakage of the furnace tube!

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See Contents: Contents.

The heat energy of fuel combustion is transferred to the water, which becomes the latent heat of vaporization of water vapor.

Introduction to the role of boilers and boiler systems.

1. Basic knowledge of boiler stoker personnel:

First, boiler basics.

Second, various types of boiler structures.

Third, combustion equipment.

Fourth, boiler accessories and instruments.

Fifth, boiler ancillary equipment.

Sixth, the main parameters of the boiler.

Seventh, fuel, combustion, and combustion adjustments.

The eighth will be thermal instrumentation and automatic adjustment.

Again, to have:

The first boiler water quality treatment.

Second, boiler operation, operation and maintenance.

Third, know about common faults and boiler accidents.

Fourth, it is necessary to go through the basic knowledge training of boiler stokers, have the operation skills of primary boiler stokers, and fifth, understand professional quality and professional ethics.

Sixth, the structure, principle, installation and use of water supply equipment Structure, principle, installation and use of ventilation equipment, boiler room thermal system and thermal pipe network:

The first boiler operation operation.

Second, the causes of common failures of safety accessories and ancillary equipment.

Third, boiler slag removal and dust removal.

Fourth, water quality supervision.

Fifth, the reading and operation of common boiler instruments.

Fourth, intermediate boiler stoker operation skills.

Boiler accident analysis and accident handling, boiler maintenance, boiler repair, industrial boiler renovation, low-pressure boiler water treatment, boiler accidents, boiler stoker personnel assessment management regulations, the Ministry of Labor and Personnel on the promulgation of the "boiler room safety management rules" on the issuance of the "boiler pressure vessel use registration management measures" notice, boiler room related records ** boiler water treatment is an important technical basic work, boiler water treatment is in place, to ensure the safe and economical operation of the boiler, energy saving, It is important to improve efficiency.

Finally, be bold and careful. That's what the master said when he first entered the factory. Especially like now, when the coal quality is unstable, it is more necessary to have good psychological quality and accident handling ability, so if you have heart disease, you should consider changing jobs.

Backwashing: After working for a period of time, the equipment will intercept a lot of dirt brought by raw water on the upper part of the resin, and after removing these dirt, the ion exchange resin can be completely exposed, and the regeneration effect can be guaranteed. The backwash process is when water is washed in from the bottom of the resin and flows out from the top, so that the dirt trapped at the top can be washed away.

This process generally takes about 5-15 minutes.

Salt absorption (regeneration): that is, the process of injecting brine into the resin tank, the traditional equipment is to use a salt pump to inject the brine, and the automatic equipment is to use a special built-in ejector to suck the brine (as long as the water has a certain pressure). In the actual working process, the regeneration effect of brine flowing through resin at a slower speed is better than the effect of simply soaking resin in brine, so the softened water equipment is regenerated by the method of slow flow of brine through resin, which generally takes about 30 minutes, and the actual time is affected by the amount of salt used.

Slow rinsing (replacement): After flowing through the resin with salt water, the process of slowly rinsing all the salts in the resin with the same flow rate with raw water is called slow flushing, because there are still a large number of calcium and magnesium ions on the functional groups in this washing process are exchanged by sodium ions, according to practical experience, this process is the main process of regeneration, so many people call this process replacement. This process is generally the same as the time for salt inhalation, i.e. about 30 minutes.

Quick rinsing: In order to thoroughly rinse the residual salt, the resin should be rinsed with raw water at a flow rate close to the actual work, and the final water of this process should be soft water. In general, the fast flushing process of the steam boiler make-up water system takes 5-15 minutes.

Step 1: Constant water temperature, constant water flowWater temperature, water flow rate is constant, and water flow rate does not change, which is the primary criterion to measure whether a boiler has high quality. In the past, the old-fashioned domestic water heater used to consume large and small water, and the water temperature was high and low.

According to reports, the boiler has changed the original old-fashioned only one heat exchange, and the gas ratio and water flow can not be completely matched, and today's new boiler adopts a secondary heat exchanger, through a complete secondary heat exchanger, completely alleviating the contradiction between gas and water flow, the water temperature is quite constant, and the water flow does not change. When purchasing a boiler, consumers should keep in mind the standard of constant water temperature.

Step 2: Energy saving, comfort now the most heard is "energy saving is a social responsibility", "comfort is a quality of life", no matter what products we choose, energy saving and comfort have obviously become the most basic standard to improve the quality of life. Electric heating is a popular heating method in the past few years, but because of excessive power consumption, it may also increase potential safety hazards, therefore, energy-saving and comfortable heating equipment has become the biggest demand of consumers.

In general, most of the boilers used in plumbing are "gas wall-hung boilers", which are connected to an external indoor thermostat to achieve personalized temperature regulation and energy saving. According to statistics, the use of room temperature controllers can save 20 to 28% of gas bills.

Step 3: Easy control. A good control system is an effective guarantee for the normal and safe combustion operation of the boiler, and is of great significance for detection, maintenance, daily operation and fault analysis.

Therefore, it is very important to choose a high-performance boiler, especially if there are elderly people and children at home, and the temperature control in each room can not only set the heating temperature freely according to your own needs, but also set the temperature in advance before going home, and you can enjoy the warmth as soon as you go home.

Step 4: After-sales service continuityFor consumers, when purchasing products, especially for large products, whether the after-sales service is perfect is a very important factor. In fact, many boiler brands on the market are difficult to guarantee after-sales service due to their imperfect after-sales service network.

The professional enterprise has a perfect service network and service system, not only to see the performance and planning of the enterprise, but also to look at the qualifications and professionalism of the enterprise, each link is professional, in order to ensure the efficiency and smoothness of the whole process.