Pressure-bearing hot water boilers are loved by users due to their reliable operation and high thermal efficiency. The inner and outer plates of the hot water boiler launched by Zhengzhou Fangkuai Boiler Factory have also undergone corresponding pressure test, corrosion resistance test, hydraulic test and combustion test. Ensure the safety performance of the boiler in operation. Many users are not very familiar with the application of pressurized hot water boilers, so let Zhengzhou Fangkuai Boiler Factory tell you the answer.

In fact, pressurized hot water boilers can be used in all places where all kinds of businesses and citizens can be used. The quality of a complete hot water system is affordable, and the operation is easier and more high-end. Mainly because the boiler has the following advantages.

1. The welding process of the pressure hot water boiler is good
       The boiler adopts high-tech technology when welding, which will not cause deformation and cracks in traditional welding, nor will it affect the replacement of the flue pipe, nor will it affect the embrittlement of caustic soda. After a long time of use, the boiler can still be kept in its original state and is not easy to crack.

2. The pressure-bearing hot water boiler is environmentally friendly
       The high-quality, low-cost pressurized hot water boiler does not produce harmful gases such as benzene and methane, which not only ensures the cleanliness of the environment, but also does not emit polluting gases, which is very environmentally friendly. Similarly, it is also suitable for many advanced places and places with stricter monitoring, and can effectively save energy and reduce heating costs.

3. The pressure hot water boiler is reliable, safe and stable
       The pressurized hot water boiler launched by Zhengzhou Fangkuai Boiler Factory uses a large diameter furnace bladder and stainless steel flue gas turbulence strips, and is equipped with a return water lifting device. The outer layer adopts a thicker glass wool insulation layer. Through the cooperation of various system components, the heating speed and heat conversion efficiency can be guaranteed, so its stability is strong.

4. The pressure-bearing hot water boiler is easy to install and easy to use
       The boiler has a complete set of system matching. According to the different use environment and installation location, only need to make fine adjustments to meet the energy saving requirements, so there is no need to worry too much about the installation.

Hot water boilers are mostly used for heating and heating in winter. If a failure occurs during the heating process, the user's hot water will be insufficient and the ambient temperature will be too low, which will affect normal life. Zhengzhou Fangkuai Boiler Factory summarized some common failure causes and solutions of hot water boilers to help everyone run the boiler better.

At present, most of the hot water boilers on the market adopt the structure of membrane water wall. What are the advantages of this design?

1. Since the membrane water wall of the hot water boiler has good sealing performance and better heat preservation effect, it improves the thermal efficiency of boiler operation, thereby providing more heat for production and life per unit time.

2. Because it surrounds the furnace and has good airtightness, part of the furnace wall can be saved with refractory materials, which simplifies the furnace wall structure to a certain extent and reduces the total weight of the boiler.

Many users have reported that the hot water boiler has a low water level during the operation. Zhengzhou Fangkuai Boiler Factory analyzed that it may be due to the water level sensor, the main controller, etc., or the heating system has water shortage. The specific situation needs to be finalized through detailed investigation and then resolved.

If it is a water shortage, replenish water in time after confirmation. If it is said that the water level sensor, controller, etc. have poor contact, then they should be replaced after confirmation. Of course, there will be other reasons. These should be based on the specific situation and take reasonable measures.

When the hot water boiler meets people's heating and heating needs, it is also very important to achieve low-cost operation, so as to avoid waste of resources, but also save an investment cost, and achieve two goals. So, what can be done to ensure energy-efficient operation of hot water boilers? Let Zhengzhou Fangkuai Boiler Factory tell you the answer.

1. The waste heat recovery method is adopted to make full use of the heat after the fuel combustion of the hot water boiler and the waste heat in the flue gas, thereby effectively improving the efficiency of the hot water boiler, saving resources and reducing costs.

2. If possible, make good use of hot water heating. Hot water heating can save at least 20%-40% of fuel.

3. Ensure the insulation effect of the pipeline and effectively prevent heat loss.

At the same time, it should be noted that the amount of scale generated inside the hot water boiler is regularly detected. When the amount of scale reaches a certain level, it needs to be cleaned.

Zhengzhou Fangkuai Boiler Factory suggests that when the controller of the hot water boiler shows "excess scale", the following measures should be taken:

1. Strictly control the feed water index of the hot water boiler, soften it, and make it enter the boiler for use.

2. Arrange the corresponding personnel to descale the boiler regularly to avoid a large amount of fouling deposits and affect the operation of the boiler.

As the level of economic development continues to improve, people's needs are constantly updated, and the requirements for hot water boilers are getting higher and higher. In addition to common heating and heating, hot water boilers also need to supply processing and production. If you want to purchase cost-effective hot water boilers, you must not ignore these three important parameters, and let Zhengzhou Fangkuai Boiler Factory tell you the answer.

1. Power of hot water boiler
       For hot water boilers, power refers to the heat provided by the boiler per unit time. Its choice is related to the input and cost, and they are directly proportional. If the selected power is too large, it will cause input costs and Later operating costs will be higher.

2. Water supply and return water temperature of hot water boiler
       Generally, the water supply and the temperature of the hot water boiler will be determined according to the heating requirements and the temperature of the heating area. For example, the adjustment method of heating in winter can be to change the quality adjustment of the water supply temperature and change the amount adjustment of the boiler circulation flow rate, so it will depend on the actual situation.

3. Design pressure of hot water boiler
       This can be a simple comparison reference. Generally speaking, the nameplate pressure of the hot water boiler is designed by the boiler manufacturer according to the national standard GB3166-82 hot water boiler product parameter series. It represents the highest working pressure of the hot water boiler. The actual working pressure of the hot water boiler is determined by the working pressure of the circulating pump, which is generally lower than the nameplate pressure.

It can be seen that if you want to purchase a cost-effective hot water boiler, the above parameters must be considered, so that we will have an advantage in the later operation and maintenance of the hot water boiler.

During the operation of the hot water boiler, if there is a sudden power failure during the operation of the boiler, the pump is stopped, the circulation is interrupted, the temperature of the water at the outlet of the boiler rises sharply, the over-temperature alarm does not give an alarm, and the boiler staff fails to detect a series Under the circumstances, the vaporization phenomenon of the hot water boiler is likely to occur, which is very unfriendly to the boiler itself and the user. Zhengzhou Fangkuai Boiler Factory summarized some 3 measures to prevent the vaporization of hot water boilers, which can help everyone better avoid vaporization of hot water boilers.

1. During the operation of the hot water boiler, the fireman must strengthen inspections and inspect carefully, and deal with it in time if abnormalities are found.

2. The smart test of the monitoring system must be done in place, and at the same time, it must be equipped with alarm equipment when the pump is abnormally stopped, and frequent maintenance.

3. Strengthen the repair and maintenance of hot water boilers, especially the more important parts such as the rotating parts of the water pump and bearings.

Of course, the best prevention is the professionalism and rigorous attitude of the furnace staff, in addition to the power of the equipment. After all, the machine is controlled by humans, so the furnace staff must have a correct attitude and operate the boiler stably.

In the operation of gas-fired hot water boilers, it is necessary to deoxygenate the feed water. The main reason is that oxygen is the main corrosive substance in the boiler water supply system. The oxygen in the water supply system should be removed quickly, otherwise it will corrode the boiler water supply system and components, and the corrosive iron oxide will enter the boiler, deposit or adhere to the boiler On the pipe wall and heating surface, insoluble but poor heat transfer iron scale is formed. Corroded iron scale will cause pits on the inner wall of the pipe and increase the resistance coefficient.

Therefore, in order to ensure the safe operation of the boiler, it is necessary to deoxygenate the boiler feed water; in the national standard "Industrial Boiler Water Quality" (GB1576-2001), the country puts forward strict requirements on boiler water quality, requiring evaporation Steam boilers with a capacity greater than 2t/h and hot water boilers with a rated power ≥4.2MW must be deoxygenated.

Zhengzhou Fangkuai Boiler Factory has summarized some operating skills when deoxygenating the feed water of gas-fired hot water boilers, hoping to help users better use the boilers.
       1. Thermal deaeration
       Thermal deoxygenation can not only remove oxygen in water, but also carbon dioxide or other gases. The deoxygenated water will not increase the salt content, nor will it increase the dissolved amount of other gases, the operation control is relatively easy, and the operation is stable and reliable.
       2. Vacuum deaeration
       Vacuum deaeration is performed at lower than atmospheric pressure (vacuum degree 600~700mmHg). It belongs to low temperature deaeration. Then the so-called vacuum deaeration shows one thing, that is, the degree of vacuum must be maintained. The quality of vacuum deaeration effect is closely related to the degree of vacuum.
       3. Chemical deoxygenation
       Chemical deaeration is also divided into different types, steel scrap deoxidation; sodium sulfite deoxidation; hydrazine deoxidation; resin deoxidation, etc. Different types of chemical deaeration methods have different characteristics. Of course, the water temperature requirement of chemical deaeration is greater than 70°C, 80~90°C has the best effect, and 20~30°C has the worst effect of deoxygenation.
       4. Analysis and deaeration
       The working principle of deoxygenation is to intensively mix and contact the oxygen-free gas with the feed water to be deoxygenated, so that the oxygen dissolved in the water is desorbed into the gas, so that the feed water achieves the purpose of deoxygenation through such circulation.

You can choose the appropriate deaeration method according to your own use of gas-fired hot water boiler to achieve the purpose of deaeration.

Compared with gas-fired steam boilers, gas-fired hot water boilers have a higher safety factor, especially atmospheric and vacuum hot water boilers, but this does not mean that the use of gas-fired hot water boilers is absolutely safe. Improper operation or poor quality of the boiler itself, the gas-fired hot water boiler (steam) water system also has the possibility of explosion. Zhengzhou Fangkuai Boiler Factory summarized some measures to ensure safer operation of gas-fired hot water boilers, hoping to avoid dangerous situations in the boiler.

First of all, in terms of fuel, natural gas has the flammable and explosive properties, so that the gas-water system or delivery system of gas boilers may explode.

In comparison, the latter is a chemical explosion, and the probability of occurrence may be greater. Therefore, on the basis of protecting the former, the focus of the work should be on the safety control of the gas system and resolutely prevent gas safety accidents. If it happens, the following aspects should be taken as the basis for the key protection work:
       1. Strengthen the safety education and skill training of furnace workers
       Safety education and training mainly focus on the basic structure and operating principles of gas-fired hot water boilers, the chemical and physical properties of natural gas, the links that are prone to safety accidents in the operation of gas-fired hot water boilers, the handling of gas accidents and emergency plans, etc. Aspects of training. In addition, in order to avoid the disadvantages of operating gas-fired hot water boilers due to the low cultural quality of the operators, it is necessary to strengthen the skill training of the operators and strictly supervise them to ensure that each operator is proficient in operating skills.
       2. Equipped with necessary gas leak detection equipment to strengthen the active inspection of the gas transmission system.
       Due to a series of problems such as the laying distance of the official website, if there is a gas leak on the way, it will cause a safety accident if it encounters fire factors such as open flames, static electricity, and lightning. Therefore, we must pay great attention to prevent problems before they happen.
       3. Develop emergency plans for gas leakage accidents and organize emergency plan drills regularly.
       Simulate actual combat drills of emergency plans should be carried out regularly. In the simulation of actual combat exercises, it is necessary not to go through the scene and deal with it falsely. It is necessary to be down-to-earth and implement conscientiously, so that the trainees can be fully exercised and cooperate with each other.
       4. The normally open channel of the boiler room of the gas-fired hot water boiler must have access control to effectively prevent irrelevant personnel from entering the boiler's heavy ground at will, which may cause unsafe factors.
       5. The sensitivity and reliability of the gas leak monitoring device and the exhaust system of the gas hot water boiler should be tested on a regular basis, and the fire department should also actively cooperate with the fire department to do the annual inspection of the fire safety alarm device on a regular basis.

The safety of gas-fired hot water boilers during operation is a key factor that we need to consider during the operation. We must conduct timely maintenance and testing. Once problems occur, we will solve them in time, and strive to reduce hidden safety hazards during operation. Lower.

To say that the market price of a 2-ton gas-fired steam boiler is mainly determined according to the boiler main engine, auxiliary equipment, installation cost, freight and other expenses. Different boiler manufacturers, different operating modes, using different materials and different structures of stoves, the final boiler prices are different. Among them, the cost of the boiler body is relatively fixed, and the cost of auxiliary equipment depends on the brand selected by the company. The installation cost and freight must be negotiated with the manufacturer.

When purchasing boilers, many users will find that the prices of gas-fired steam boilers from different manufacturers vary greatly. In fact, you can use this short answer: If you want to buy a car, there are thousands of configuration ranges for different brands. The prices of boilers with different configurations and different efficiencies are of course different.

Therefore, the boiler is the same. Although the steam is the same, the steam boiler is also 2 tons, which can produce 2 tons of steam per hour, that is, whether the output is sufficient.

In addition, it also produces two tons of steam and how much natural gas is consumed. Of course, this is firstly related to the commissioning of the combustion chamber, but it is also mainly related to the technical heating area of ​​the boiler.

The service life of the boiler can not be used for 2-3 years, at least 15 to 20 years, and the design service life is 20 years. The quality of the boiler material directly affects the service life of the boiler, the thickness of the furnace wall and the thickness of the pipe.

Users of gas-fired steam boilers generally choose to use natural gas as fuel, because my country's current natural gas transfer projects have become more popular, and natural gas can be easily used in most areas. For users, it is very important to use gas-fired steam boilers correctly to prevent natural gas leakage.

The main components of natural gas used in gas steam boiler rooms are: methane content of 98%, propane content of 0.3%, butane content of 0.3%, nitrogen content of 1% and other substances; explosion limit: 5% to 15%.

When the concentration of natural gas in the air exceeds 15%, it will cause hypoxia and neurological damage, resulting in respiratory paralysis, coma and even death. A gas explosion is an instantaneous combustion of high-temperature and high-pressure gas up to 3000℃, and the explosion shock wave speed can reach 300 m/s, causing great damage.

Regarding the prevention of the leakage of the membrane water wall pipe of the gas steam boiler, the cause of the leakage should be investigated, and the following preventive measures should be proposed based on the inspection results:
       (1) Clean up the scale and slag accumulated inside the boiler to avoid the formation of a strong alkaline environment in the local position of the boiler;
       (2) It is recommended that the boiler should avoid long-term low-load operation to improve the water circulation state. The load should be kept at about 80% as the best, so as to prevent part of the water wall tube bundle from stagnating in soda;
       (3) The water level meter and the secondary meter display are inconsistent, so adjustments should be made to prevent the boiler from running at a high water level.
       (4) According to the requirements of the specification, for steam boilers with a rated evaporation capacity ≥4 t/h, the boiler water quality analysis shall be conducted at least once every 4 hours. When the boiler water quality is abnormal, the frequency of laboratory tests should be increased to keep the boiler water quality indicators in a qualified state for a long time.

According to my country's regulations: gas-fired steam boilers are special equipment, so everyone must operate in strict accordance with the specifications when using gas-fired steam boilers to avoid safety accidents. Regular inspections of gas-fired steam boilers are very important. Zhengzhou Fangkuai boiler manufacturers explain some of the problems that are easy to find during regular inspections of gas-fired steam boilers to help everyone use the boiler better.

The problems of internal inspection: one is the existence of cracks, and the other is the deformation of some compressed parts. The first problem is a major obstacle to the operation of the boiler. When necessary, welding or replacement is the main way to solve it. To avoid corrosion cracks, it is necessary to strengthen the monitoring of water quality in daily operation. The second type of problem is generally caused by excessive temperature, uneven heating, and insufficient component strength. Strengthening the management of water quality and doing a good job in timely drainage can effectively reduce component deformation.

The inspection methods mentioned in the regular inspection probably include visual inspection, non-destructive inspection, light inspection, etc. Visual inspection: A method to observe whether there is a problem with the boiler by eye. This method is suitable for the condition that no other equipment exists in the early stage of the boiler inspection. When the boiler has obvious external defects, the visual inspection method is more suitable. Compared with other inspection methods, the visual inspection method has the advantages of simple and intuitive, but the visual inspection method has certain requirements on the technical level of the inspectors. Non-destructive testing (NDT) refers to the thermal, electrical, acoustic, magnetic, optical and other reactions caused by the abnormal structure or defect of the material without damaging the performance of the measured object and the internal structure of the measured object. Using physical or chemical methods, using modern technology and equipment, the internal and surface structure, performance, state and type, performance, quantity, shape, location, size, distribution and changes of inspection and testing methods have been studied. Non-destructive testing is generally divided into ultrasonic testing, magnetic particle penetration, X-ray testing, etc. Magnetic particle testing is suitable for boiler parts that are easily magnetized and easily demagnetized, and has incomparable advantages over visual inspection. For the fillet welds of boilers, ultrasonic testing is generally used. This method can be used to detect whether the weld fusion meets the standard. X-ray inspection can accurately identify the internal defects of the boiler structure, and objectively evaluate the internal defects through the radiographic film.

If the gas steam boiler is properly maintained, the service life is very long, and it can even be used for ten or twenty years.

Matters needing attention in the operation of gas-fired steam boilers, because most of the steam boilers used by enterprises and units use gas as fuel, so everyone must pay more attention to the safety of the boiler. In the process of using the boiler, you must strictly follow the operating procedures to check And deal with it to prevent unexpected situations.

Gas is a flammable, explosive, and toxic gas. It has no color. Although it has a certain smell, it is difficult to detect in time by smell. If gas leaks into the furnace or air that is out of service, it will cause blasting. Therefore, the gas pipeline must be strictly tested for leaks. The furnace must have the necessary interlocking maintenance control system. The boiler room must have gas leakage monitoring and alarm devices and ventilation equipment. Use explosion-proof electrical appliances. The boiler should have a strict starting sequence control system. Before burning the gas boiler, it is necessary to carefully purge the furnace and flue to remove the combustible gas that may accumulate in the furnace. Boiler burners must be equipped with flameout safety maintenance devices. Once flameout occurs, it is also necessary to purge and follow normal combustion procedures before secondary combustion. In addition, the gas is transported by pipeline and there is no backup fuel. Once the gas pipeline breaks or the gas pressure is too low, it will cause the boiler to stop.

In our country, steam boilers are special equipment. Because the boiler has a certain pressure, you must pay more attention to safety issues during use. What are the details that need to be paid attention to during the use of steam boilers? This is a question that many users care about. The boiler technical engineer of Zhengzhou Fangkuai Boiler Factory will tell you the answer.

During the operation of the boiler, professional personnel are required for debugging. There are also many precautions during operation. If some parts are improperly operated, it is likely to cause irreparable losses to the boiler. Therefore, for enterprises, it is necessary to have a detailed understanding of some precautions before or after use.

The safety valve on the steam boiler cannot be adjusted arbitrarily. When the pressure gauge reaches over 80% of the agreed working pressure, the safety valve should be vented once. It is forbidden to tie or embed the valve stem. After the steam boiler is pressurized, check whether the steam valve is active, and always pay attention to the water level to keep it at 2/3 of the water level gauge.

Steam boiler water must be softened, kept clean, and contain no grease. The outside of the glass tube of the water level gauge should be equipped with a reinforced protective cover, and the outside should be kept clean. Each shift should be washed once to observe whether the water level in the water level table can rise or fall rapidly. If you see stagnant water panels in the water level gauge during operation, you should find out the cause immediately to avoid false water levels. Before starting a fire in a steam boiler, check whether the water pipes, steam pipes, pressure gauges, safety valves, water level gauges, drain valves, etc. of all valves are in a perfect state. When the furnace is urgently shut down, the combustion should be stopped first, the air door should be closed, the furnace door and the vent valve should be opened, and it is forbidden to add water to the furnace immediately due to water shortage.