Explosion is one of the more serious accidents in gas-fired hot water boiler accidents. It will cause serious damage to equipment, heating systems and buildings, and it will cause great casualties and adversely affect social and economic development. Regarding the cause of the explosion of the gas hot water boiler, FANGKUAI Boiler summed up the following aspects and proposed an effective treatment method.

First, the cause of the explosion
       1. Design and manufacturing problems
       Unreasonable boiler design results in uneven distribution of flow in each water circulation loop. The thermal deviation is too large, and the structure has fillet welds, squares, flat plates, and steel materials that do not meet the requirements; the manufacturing process for manufacturing and repair is not good. If the welding quality is unqualified, the boiler will be broken.
       2. Overpressure
       The operating pressure of the boiler exceeds the permissible working pressure, and the compressive stress (internal pressure) of the steel plate increases, which exceeds the strength limit of the steel plate and causes cracking. The main reason is that the safety valve is malfunctioning, the pressure gauge is faulty, and the console meter indicates an error.
       3. Overheating
       The steel plate is overheated and burned, and the main cause is that the scale is too thick or there is grease or other debris in the pot water, which blocks the heated surface.
       4. Corrosion
       After the inner and outer surfaces of the steel plate are severely corroded, the thickness is reduced, and the strength of the steel plate is insufficient to cause cracking.

Second, the solution
       1. The following measures should be taken for the defects in the design: first, the design is reasonable; second, the materials are strictly controlled; third, the correct manufacturing process specification and process card (including repair); fourth, the establishment of necessary rules and regulations; The fifth is to improve the quality and responsibility of operators and managers.
       2. Strictly prevent overpressure. To ensure the sensitivity and reliability of the safety valve, automatic draining is required once a day. The problem should be dealt with in a timely manner, and a standard pressure gauge should be installed for comparison.
       3. Prevent overheating. Effective water treatment equipment must be configured and strict rules and regulations must be established. The boiler should be free of scale or scale and no grease. When the boiler is out of service, check the scaling. If there is scale, it must be cleaned up in time.
       4. Prevent internal corrosion. For larger capacity hot water boilers, thermal deaeration or chemical deaeration is used. In addition, check the internal and external corrosion conditions. Repair means such as replenishment or excavation according to the degree of corrosion (there must be a technical plan approved by the unit's chief engineer and reported to the local boiler supervision department).
       5. In order to prevent boiler explosion, the boiler should be inspected regularly. At the same time, the boiler management department must formulate effective measures. The operators and management personnel must strictly implement the safety code for stopping the boiler after minor accidents.

The water-cooled wall of the water tube boiler is placed on the inner wall of the furnace, and is arranged closely adjacent to the furnace wall, and is arranged substantially in a vertical manner. For boilers below subcritical pressure, the water wall is mainly used to absorb the radiant heat of the high temperature flame in the furnace, so that the working medium (water) entering the pipe generates steam. In the furnace design, in addition to meeting the fuel combustion conditions, the heat absorption of the water wall is sufficient to reduce the outlet temperature of the furnace to the softening temperature of the fuel residue to prevent coking of the heated surface of the furnace outlet.

First, the light pipe water wall
       The inner and outer walls are composed of smooth seamless steel tubes and have no other features.

Second, the pin type water wall
       For furnaces burning low-volatility fuels, in order to maintain a high-temperature flame in the combustion zone to facilitate fuel combustion, it is necessary to lay a certain number of insulation zones on the furnace wall of the burner arrangement area. The refractory belt is generally welded with a refractory material such as chrome ore on the water wall tube.

Third, the internal thread tube water wall
       For the subcritical pressure natural circulation and control cycle boiler, in order to prevent the membrane boiling from prematurely occurring, the heat transfer of the steam-water mixture is delayed, and the high heat load area of ​​the burner is arranged in the furnace, and the internally threaded tube is often used instead of the smooth inner light tube. To make water walls.

Fourth, membrane type water wall
       Most modern boilers use this structure, and so are the FANGKUAI Boiler same. This is because the water wall of the boiler of this structure is a continuous steel structure, avoiding the contact between the brick wall and the prefabricated (refractory) material and the flame surface, reducing the heat load and weight of the brick wall and the heat insulating material, and facilitating the sealing of the furnace ( Reduce air leakage). At the same time, a smooth and low temperature metal surface is beneficial to reduce the possibility of coking in the furnace.

An electric steam boiler is a device that converts electrical energy into heat energy by electric heating, thereby causing the boiler to complete the reaction and output steam to the outside.

So, what are the precautions for users when purchasing electric steam boilers for the first time? Fang fast boiler for your science.

First, thermal efficiency
       The thermal efficiency is related to the operating cost of the electric steam boiler. The thermal efficiency of the electric steam boiler developed by FANGKUAI can reach more than 98%, which is about 20% higher than the thermal efficiency of the ordinary electric steam boiler on the market, so it is more energy-saving and economical.

Second, the steam time
       The steam outlet time refers to the time taken from the start-up of the machine to the generation of steam that meets the temperature requirements. The shorter the time, the more energy-saving. The steaming time of a typical steam boiler is about 30 minutes. The electric steam boiler produced by FANGKUAI boiler only takes 30 seconds to produce steam, which saves the company a lot of operating costs.

Third, energy saving and environmental protection
       Many central cities in China implement air pollutant emission standards of 30 mg/m3, which is a challenge for many boilers. The electric steam boiler has no combustion chamber and no chimney, and does not need to consider the heat loss problem. At the same time, it has the characteristics of clean and pollution-free, and is more energy-saving and environmentally friendly.

Fourth, safety performance
       The safe and stable operation of the equipment is undoubtedly a magic weapon that makes the enterprise more secure and more worry-free. The square electric steam boiler can adopt modular installation structure, and the customer can flexibly adjust the use of single or multiple devices according to the actual steam consumption, ready to use, simple maintenance and space saving. In addition, the boiler also adopts the PLC intelligent control system designed and developed by FANGKUAI, which is fully automatic and runs without special personnel, saving labor costs.

Of course, there are still many problems to be aware of when purchasing an electric steam boiler. The above aspects are among the more important factors. Combining the above factors, we can judge the quality of the electric steam boiler and help you purchase it for your own business. The boiler used.

Good maintenance can improve the efficiency of heat exchange in electric boilers and reduce electricity consumption. Through experimental comparison, the electric boilers that have been cleaned and maintained under the same conditions have a heating rate of about 25% faster than that of electric boilers that have not been cleaned and maintained. That is to say, the electric boiler can be cleaned after the original foundation. Save about 25% of the power resources.

At the same time, it can extend the service life of electric boilers. Descaling by internal cleaning can effectively reduce the load on the main components such as pumps and heat exchangers, thus making the boiler run more smoothly and prolonging its service life. If the boiler is cleaned and maintained once every two years, the service life of the equipment can be extended for 3-5 years.

Electric boiler maintenance method
       First of all, we must ensure that the use environment of electric boilers should be in a dry, non-moisture environment. If the humidity is too large, it will easily lead to the occurrence of electricity in the electric boiler, causing electrical disasters.

First, before the maintenance of the electric boiler, we must first cut off the power supply, so as to ensure the safety of subsequent operations.

Second, the electric boiler is mainly composed of the body, the electric control box, the control system and various power supply cables. The maintenance and maintenance of these components should be controlled once every two months. For electric boiler burners, it is necessary to remove some foreign matter such as dust every two months during use; Wipe the test once a month; in addition, the filter inside the oil pump should be checked regularly. But be careful: do not damage the sealing pad to avoid damage to the oil pump.

Thitd, during the use of the electric boiler, the safety valve should be moved once a day to prevent rust from losing its original function.

Forth, after all inspections are completed, all tools and materials need to be placed, placed in the designated location, and then safely recorded for later enquiry.

The boiler price is the first consideration for every user when purchasing equipment, which makes the cost investment clearer and clearer. The price of natural gas boilers on the market is now different, and many users will have a feeling of fog when shopping. This is mainly due to regional factors, equipment materials, production processes and other reasons caused by different prices.

What is the best way to buy a good gas boiler?

First, the manufacturing materials
       Reasonable design structure, higher quality and more corrosion resistant configuration parts are the main factors that determine the quality and service life of the boiler. The internal parts of FANGKUAI Boiler gas boiler are collected from domestic and foreign high-quality brands, and both quality and post-maintenance services have great protection. Such as: Italian famous brand Liya Road burner, Grundfos pump, Siemens electric control, and so on.

Second, the service
       Whether it is pre-sale, sale or after-sales service, it has a very important impact on the business. Professional and patient pre-sales consultation, good communication and cooperation between the two parties during the cooperation process, and daily maintenance and overhaul of the boiler operation will bring different experience to the users. FANGKUAI Boiler always believes in the business philosophy of “observing and thinking from the perspective of the user”. In the pre-sales consultation, sales cooperation and after-sales remote monitoring system, 120% of the energy is invested to provide users with high quality boiler products. diligent.

Third, the brand
       I have to say that the influence of the brand is endless. To build a good reputation, to become a boiler brand in the hearts of users, is the soft power of a boiler enterprise. The good word-of-mouth is the most authentic feedback that countless users have after using the boiler. It also depends on the boiler's own quality.

After reading this article, I believe that everyone has some control over the price of natural gas boilers. If you have not yet determined what type of natural gas boilers to buy, you can directly consult the customer service on this site to find out the differences between the different brands of equipment. We will connect with professional technicians to help you select a natural gas boiler that is more suitable for your business.

First of all, the boiler manufacturer should be assessed.
       In general, users will have higher quality requirements for commercial boilers.

Second, the boiler must be selected.
       1. Boiler combustion efficiency
       Commercial gas hot water boilers are mainly used for heating and bathing, so it is necessary to provide all-weather, uninterrupted water supply and heat supply. When purchasing, you should first understand the thermal efficiency of the boiler. Attention should be paid to the boiler exhaust temperature, excess air ratio, fuel combustion utilization rate, furnace wall heat dissipation strength, etc. (see the next article for specific factors affecting boiler thermal efficiency). The boiler combustion efficiency directly determines the cost of boiler use.
       2. Boiler circulating water pump
       Among the components operating in gas-fired hot water boilers, circulating water pumps are one of the most vulnerable parts. Boilers with good high temperature resistance, low noise and low vibration should be selected, and the service life of such boilers will be greatly enhanced.
       3. The boiler protection device
       A good boiler not only has high thermal efficiency and resistance to the use of components, but also a protective device. When there are many unexpected situations such as low temperature, high temperature, high water level and low water level, the boiler should have very sensitive and obvious alarm devices to ensure the safety of the boiler.
       4. The boiler anti-seize device
       Considering the special nature of commercial gas hot water boilers, it is necessary to pay attention to whether the boiler has anti-seize devices. This device is related to the service life of the boiler and also relates to the stability of the equipment and cannot be ignored.

Finally, boiler after-sales service is also an important assessment point for users when selecting boiler products.
        A well-established boiler manufacturing brand, even if it is a little expensive, will also feel unlimited safety during use.

Since its establishment, FANGKUAI Boiler has devoted itself to the research and development and manufacture of gas-fired boilers, and has insisted on a boiler brand with sound systems and various safeguard measures. For many years, we have provided boiler equipment for many companies in various industries. If you have any need for boilers, you can get in touch with us through the toll-free hotline. Our professional technicians will be happy to help you.

The low-nitrogen gas boiler is based on the comprehensive improvement of people's living standards, and introduces more efficient, energy-saving, comfortable and convenient, low-emission environmental protection thermal equipment.

What are the benefits of using a low-nitrogen gas boiler?

1. Capacity expansion is good
       As the season changes or other conditions, the user's demand for boiler heat output also changes. Fangchao's low-nitrogen gas boiler can adopt multiple joint-controlled operation modes, and flexibly adjust the number of operating units according to different needs of users, which can meet user needs and avoid unnecessary waste.

2. Small footprint
       After thousands of tests, the boilers have been properly selected. Compared with ordinary gas-fired boilers, the boilers can save more than 20% of the floor space, lower the boiler building infrastructure requirements, and reduce the user input costs.

3. Running quiet
       Fang quickly chooses the internationally renowned brand, Liya Road burner, which has good sound insulation effect, which significantly reduces the noise generated by combustion and flue. The noise is less than 60 decibels (normal speaking sound).

4. A wide range of applications
       Due to the modular design structure of the boiler, the installation and transportation are very flexible, and the emission of harmful substances is very low. It is widely used in large-scale use places such as hotels, office buildings, hospitals, shopping malls, schools, factories, etc.

5. Energy saving and environmental protection
       The boiler cooperates with the natural gas combination proportional control valve and the full premixed fan, which not only ensures an excellent air-fuel ratio, but also automatically adjusts the boiler output to meet the dynamic heat load, so that the boiler heat output curve is as close as possible to the dynamic heat demand curve, Produce invalid output, heat exchange efficiency can reach 108%, realizing energy saving and environmental protection.

Some indoor swimming pools are still open during the cold winter season, mainly due to the indoor use of hot water boilers to heat and heat the water in the swimming pool.

For some places with large area of ​​use, the gas-fired boilers with smaller capacity can not meet the heating demand; therefore, according to the needs of users, the gas boilers with different capacities can be designed with a new design concept, environmentally-friendly and efficient image. The boiler market has been widely recognized and highly evaluated by many customers.

Measuring the quality of a boiler is determined by a variety of factors. Comprehensive judgments such as thermal efficiency, input cost, use effect, environmental protection index, and post-maintenance can make the most comprehensive choice possible.

The gas-fired hot water boiler produced by FANGKUAI Boiler has achieved excellent results in the field of clean boilers with outstanding advantages such as high efficiency, durability, safety and reliability, and simple operation, and has won the favor and recognition of a large number of customers.

Nowadays, there are many brands of gas boilers on the market. Which brand is better?

As a professional manufacturer of clean gas boilers, FANGKUAI Boiler not only has condensing gas boilers, commercial gas boilers, but also full premixed condensing gas boilers, which can provide suitable products for different needs of consumers.

Many users face the problem of installing boilers after purchasing gas boiler products that suit their needs. The technicians of FANGKUAI Boiler have summarized the following precautions for the installation of gas boilers based on years of experience in installing boilers on the customer site.

First, the preparation work before installation
       1. Determine the installation location of the boiler. The unit that installs the boiler must hold the boiler installation certificate issued by the higher authorities in accordance with the installation requirements.
       2. To go through the registration procedures, according to the “Steam Boiler Safety Supervision Regulations”, the units that use the boilers need to go through the registration procedures for each boiler. The boiler user needs to have a person responsible for the work, and is responsible for communicating with the local pot inspection station and docking all installation procedures.
       3. Inspect the boiler and accessories, carry out comprehensive inspection and acceptance of the boiler body, combustion equipment, auxiliary machine parts, etc., and make a record. If it is found that the parts that do not meet the standard are promptly reported to the boiler manufacturer.

Second, the installation work
       1. Boiler body, auxiliary machine, accessory packing box, instrument packing box, etc. need to be hoisted according to the specified position, and the position cannot be changed at will.
       2. There should be enough space around the installation location to facilitate simple maintenance work at the later stage. The boiler door and each inspection hole must be opened.
       3, in the boiler room, you need to leave the air inlet, and also equipped with filters and other equipment, and timely cleaning to prevent blockage.
       4. Do not place flammable and flammable materials, corrosive gases and volatile substances in the boiler room.

Third, the inspection work after installation
       1. After the boiler is installed on the ground, it is necessary to carry out comprehensive inspection and maintenance work to ensure that the boiler will not leak when it is put into operation later.
      

As a square-speed boiler focused on clean fuel boilers for 20 years, FANGKUAI Boiler has considerable industry experience in gas boiler installation and has a very professional user field installation engineer to provide you with services that meet your needs.

When enterprises purchase heating boilers, many indicators such as heating area, building height, and insulation measures are the criteria for determining the type of boiler to be purchased.

As far as the heating area is concerned, FANGKUAI Boiler's existing boiler equipment can reach a heating area of 10,000 square meters for a 1 ton hot water boiler. If it is for large centralized residential areas or heating companies, when the heating area is too large, we will recommend a gas water pipe hot water boiler for you.

Due to its unique structure, the water tube boiler is less affected by capacity and pressure, and can be customized according to user needs. Recently, we have provided a 80-tonne and a 40-ton water-pipe hot water boiler for Gu'an Huaxia Happiness Real Estate Company for heating in residential areas.

Of course, the specific situation needs to be analyzed in detail. We also have a variety of boiler products for small heating areas, such as commercial, condensation series.

The boiler is a device that consumes a lot of energy, and the energy-saving device of the gas boiler is born based on this. In order to save energy, the waste heat of the high-temperature flue gas discharged from the boiler is reused. The manufacturer installs the economizer near the tail of the boiler or near the top flue, which is a component for heating the water supply. The gas boiler installed with the economizer can improve the efficiency of the boiler by lowering the exhaust gas temperature, thereby achieving the purpose of saving fuel.

Classification of energy savers:
       Depending on the application and the exchange medium, the energy saver is mainly divided into flue gas-liquid boiler economizer, flue gas-air boiler economizer and all stainless steel 304 frame plus stainless steel spiral finned tube (high frequency welded pipe), which has fast heat transfer. , energy saving, durable and so on.
       The energy-saving device produced by FANGKUAI Boiler uses a spiral finned tube structure with high heat exchange, which increases the heat exchange area by 5 times compared with the ordinary light pipe heat exchange, and the heat exchange rate is directly increased by about 5 times. It not only meets the energy-saving requirements of boiler operation, but also saves a lot of use area.

Generally speaking, the price of the energy-saving device of the gas boiler is related to various factors such as the volume of the boiler body and the expected effect. If you want to know the specific price of the energy-saving device, you need to communicate with professional technicians according to your own needs.

In the boiler market, a boiler product called “condensing” boiler is getting windy. So what are the advantages of this kind of condensing boiler? What are the advantages compared with ordinary boilers?

First, as the name suggests, the condensing boiler is a boiler that uses condensation technology. The flue gas discharged from the boiler is re-heated by the condensing device, and the sensible heat and steam condensation in the exhaust gas are fully utilized to form the latent heat released by the water droplets. The purpose of boiler thermal efficiency.
       After the traditional boiler is used, the exhaust gas temperature is generally around 160~250 °C, and the water vapor in the flue gas is still overheated, and there is a large amount of unused heat. Generally speaking, the thermal efficiency of the boiler is calculated according to the low calorific value of the fuel. The heat of the latent heat of vaporization in the high calorific value of the fuel is not calculated, so the thermal efficiency of the conventional boiler can only reach about 87%~91%. The condensing boiler added with the condensing technology also recycles the heat of vaporizing latent heat in the flue gas discharged from the fuel, and reduces the exhaust gas temperature to 50-70 ° C, and the boiler thermal efficiency is also improved. If the efficiency of an ordinary boiler is generally around 93%, and the condensing furnace technology can increase it by 15%, it can reach about 108%. Such an energy-saving and environmentally friendly boiler will inevitably lead the development trend of the future boiler industry.
       Taking natural gas fuel as an example, its high calorific value is about 9500kcal/m3, and the low calorific value is about 8600kcal/m3, which is about 900kcal/m3, which accounts for 11% of the low calorific value. Therefore, the choice of condensing boiler will be compared with ordinary boiler. Reduce gas operating costs by about 11%. (See details for high and low calorific value)

Second, the condensing boiler is more environmentally friendly. Compared with traditional coal-fired boilers, condensing boilers generally use clean and environmentally friendly natural gas as fuel. The exhaust gas generated by boiler operation is greatly reduced, and the emission of harmful substances such as sulfur oxides, nitrogen oxides and dust in urban air is alleviated. Environmentally friendly pioneer boiler products.

FANGKUAI Boiler has many years of experience in research and design of condensing boilers. The condensing series boilers have thermal efficiencies of over 107% and nitrogen oxide emissions of less than 30 mg/m3. They are also safe to use and have a long service life. The operation has many advantages such as low heat loss and has been widely used and used by users after being put into the market.