The convection pipe is the convection heating surface of the gas boiler, which is used to absorb the heat of the high temperature flue gas and increase the heating area of ​​the boiler. The performance effect of the convection tube bundle - endothermic, is related to the flue flow rate, the arrangement of the tubes, the way the flue gas is flushed, and is one of the most important components of the gas boiler.

The water wall tube is laid on the inner wall surface of the furnace, and is mainly used for absorbing the flame in the furnace and the radiant heat emitted by the high temperature flue gas, and has the function of cooling and protecting the furnace wall.

First, the cause of blasting water wall tube blasting
       1. The material is unqualified and the installation does not meet the requirements of the specification. If the pipe wall is stratified, the weld quality does not meet the grade requirements, and there are remnants in the pipe. Causes the tube wall to be partially overheated and burned out.
       2. The quality of the feed water does not meet the standard requirements, causing fouling of the pipe wall structure and affecting heat transfer. Causes the tube wall temperature to overheat and blast.
       3. The fly ash is seriously worn, and the thickness of the pipe wall is reduced.
       4. The fire rises too fast or the furnace is stopped too fast, and the tube is unevenly heated and the weld is broken.
       5. Boiler explosion may occur due to excessive boiler load, uneven combustion and serious coking outside the pipe.

Second, prevent explosion control measures
       l. Before the installation, the pipe should be strictly re-examined, and the welding must have a welding procedure guide, and the welding quality meets the design requirements. After the pipeline is installed, pass the ball through the ball to ensure that the pass rate reaches 100%.
       2. Strengthen water quality management, soften water once per shift and meet water quality standards, regularly check scale content and eliminate it, and regularly discharge pollutants.
       3. The water wall tube and the convection tube should be inspected regularly. It is found that the tube with deformation or thinning should be replaced in time. At the same time, attention should be paid to the quality of the inspection, which must meet the requirements of the specification.
       4. The boiler should not be overloaded (specified limit), pay attention to the combustion process in the furnace, and ensure that the combustion is uniform and stable.
       5, pay attention to the pipe coking situation, to achieve timely focus and pay attention to leakage.

The correct water circulation protection measures of the gas hot water boiler can effectively prevent the water vaporization and water hammer and other bad phenomena from occurring after the water circulation pump suddenly stops. Based on years of industry experience, FANGKUAI Boiler will summarize the protection measures for the water circulation of gas hot water boilers for your reference.

1. Between the inlet and outlet pipes of the circulating water pump, set the bypass pipe of the check valve, the pipe diameter should be close to the mother pipe, and the cross-sectional area of ​​the bypass pipe should not be less than 1/2 of the cross-sectional area of ​​the parent pipe; check valve The direction of the water flow should be consistent with the direction of the water flow of the pump.

2. A heavy hammer type micro-opening safety valve is arranged on the inlet pipe section of the circulating water pump, and the overpressure drain pipe can be connected to the open water supply tank or the drainage ditch.

The design of circulating water system in gas hot water boiler room should also meet the following requirements:

1. Each boiler outlet pipe shall be equipped with a shut-off valve or gate valve. The boiler inlet and supply pipes shall be provided with a shut-off valve and a check valve.

2. When the hot water boilers are operated in parallel, a regulating valve shall be installed on the inlet pipe of each boiler so that the deviation of the outlet water temperature of the parallel boiler does not exceed 10 °C.

3. The gas collecting and exhausting devices shall be installed at the high point of the boiler outlet pipe and the gas gathering place. The size of the exhaust valve shall not be less than DN20.

4. The lower part of the system and the low recess should be provided with a drain pipe and a drain valve.

5. The decontamination device should be installed at the position where the hot water system return water main pipe is convenient for cleaning. There should be a pressure gauge and a closing valve before and after the decontamination device, and there are bypass pipes 1 to 2 smaller than the main pipe.

6. There should be multiple water heaters and water collectors in the boiler room for hotspots. The water separators and water collectors should be equipped with drain valves, thermometers, pressure gauges, etc.

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.

Boilers are classified as special equipment because of their certain security risks. All countries in the world have their own institutions and regulations to supervise them. If it is unable to meet local regulations, it will not be allowed to install and use. The FANGKUAI Boiler gives you a brief introduction to the boiler installation and use qualifications in various countries.

First, the general standard.
       The ASME standard is a standard of the American Society of Mechanical Engineers, and ASME-compliant boilers are accepted by most countries. Such as North and South America, the Middle East, the Philippines and other countries.

Second, individual standards everywhere.
       1. The EU as an independent region, in line with the PED directive is the basic condition for the boiler to enter the EU.
       2. India is a big country in South Asia and a major importer of boilers. If a boiler wants to enter India, it must comply with the Indian boiler program, IBR.
       3. Australian states have their own special requirements for boilers, but they also have to meet AS standards.
       4. Malaysia implements the DOSH standard, which is basically similar to the ASME standard.
       5. The Russian-speaking area can be produced using Chinese standards, but a CUTR certification is required to enter the customs.
       Note: In addition to the design and manufacture of materials according to local standards, the manufacturing process of the boiler requires a third-party agency inspection and a certificate or declaration of conformity to the standard. This is generally a necessary condition for the settlement of a letter of credit or the entry of goods. Each country has its own third-party inspection agency, but the inspection cost is not a small expense.
       In addition, meeting the transportation conditions of the place of use is also a basic condition for the boiler outlet. In many foreign countries, there are restrictions on transportation and lifting weight, and the quick-loading boiler cannot be loaded and unloaded locally.

FANGKUAI Boiler has been exported to Indonesia, Russia, North Korea, South Korea, the Philippines, Vietnam, Thailand, Australia, Mongolia, India, Singapore, Oman, Europe and America and other countries and regions since it began exporting boilers in 2000. Chemical, pharmaceutical, paper, brewing, textile, food, electronics, heating and other industries. And trained a group of professional technical and overseas technical teams to solve boiler problems for overseas users.

The electric steam boiler is a device that replaces electric energy into heat energy by electric heating, so that the boiler completes the reaction, and the device that outputs steam to the outside is deeply loved by users with its excellent characteristics of cleanness, environmental protection and pollution-free, and is gradually popularized.

The boiler has the title of “industrial oil”, which shows its importance. The application fields of electric steam boilers are also very extensive. The manufacture of various industrial products such as textile, printing, paper, food, plastics, chemicals, medicine, steel, metallurgy, etc. all have electric steam boilers, but also for enterprises, individuals, Domestic water is provided for schools, hotels, restaurants, baths, etc.

So, what are the precautions for users when purchasing electric steam boilers for the first time? FANGKUAI 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 Fangfang 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 Fangkuang 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 Fangqi, 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.

According to FANGKUAI Boiler's many years of research experience on boilers, 10 steam ton gas boilers have very large market applications. According to the use, it can be divided into 10 steam tons of gas steam boilers and 10 steam tons of gas hot water boilers. Most of the industrial fields use steam boilers, which are mainly used for heating and hot water supply.

There are two major types of FANGKUAI gas boilers with 10 steam tons.

1. Horizontal internal combustion chamber combustion (referred to as WNS) 10 steam ton gas boiler
The WNS gas boiler adopts advanced condensing technology to make full use of flue gas waste heat, and the thermal efficiency can exceed 100%. At the same time, advanced technology such as full premixing and FGR flue gas recirculation is used to treat NOx by reducing NOx from different parts. Emissions, the introduction of low-nitrogen boilers with NOx <30mg/m3.

2. Double drum vertical chamber combustion (referred to as SZS) 10 steam pipe water gas boiler
The SZS water pipe gas boiler drum is arranged in a "D" shape, the structure is compact and reasonable, and the main components such as the drum are not directly irradiated and washed by the high temperature flame, and the safety reference is higher. The FGR flue gas recirculation technology makes NOx less than 30mg/m3, which is an excellent choice for large industrial enterprises.

If you want to know more about the price of 10 steam ton gas boilers, technical parameters, applicable conditions, investment costs, etc., you are welcome to consult the FANGKUAI Boiler online!

Air consumption is an important indicator for evaluating the quality of gas-fired boilers. It is also one of the standards that users measure when purchasing boilers. This data will directly determine the cost of the company's investment in boiler operation.

FANGKUAI Boiler uses a 1 ton gas-fired steam boiler as the base to calculate the method for calculating the gas consumption of the boiler.

First of all, we need to identify the factors that affect the gas consumption of the boiler.
       1, the boiler heating area
       Generally speaking, the larger the heating area is occupied in the whole boiler, the more heat is transferred to the boiler by the fuel combustion, and the fuel utilization rate is improved. On the one hand, the company saves more fuel.
       2, fuel calorific value and price
       The calorific value of different types of fuels will also vary. The calorific value of natural gas combustion is 8600 kcal/m3, and the calorific value of diesel is 10240 kcal/kg. However, the cost of fuel should also be considered. comprehensive.
       3, boiler thermal efficiency
       The thermal efficiency of the boiler is also closely related to the heating area. The larger the heating area, the better the heat transfer effect, which will increase the boiler thermal efficiency linearly, make the fuel utilization more complete, and the gas consumption cost less.
       The condensing gas steam boiler produced by Fangkuai uses a advanced condensation technology to set up a condensing recovery device near the flue. When the high-temperature flue gas passes through the device, the latent heat part encounters the condensed water to release heat, which is supplied to the boiler for absorption again. The thermal efficiency can be It is as high as 108%. In one year, it can save the company the fuel input cost of 50,000 to tens of thousands (depending on boiler capacity and maintenance quality).
       4, the boiler output
       The output of a 1 ton boiler is 700,000 kcal, and so on. The output of a 10 ton boiler is 7 million kcal.

Formula for calculating fuel consumption
       Fuel consumption = boiler output ÷ fuel calorific value ÷ boiler thermal efficiency.

According to the above method, the user can calculate the gas consumption of the gas steam boiler according to the various values ​​provided by the boiler manufacturer, and more comprehensively understand the boiler and select the boiler equipment suitable for the enterprise.

Electric boilers are popular among users for their environmental protection, cleanliness, pollution-free, noise-free, and fully automatic functions. Then, how should electric boilers be used for maintenance work to ensure normal heating in winter? FANGKUAI Boiler summarizes the following contents for everyone to learn and reference.

First, the benefits of regular maintenance of electric boilers
       1. It can improve the efficiency of heat exchange of electric boilers and reduce the consumption of electricity. 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.
       2. Extend the service life of the electric boiler. 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.

Second, electric boiler maintenance methods
          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.
       1. Before the maintenance of the electric boiler, we must first cut off the power supply, which can ensure the safety of subsequent operations.
         2. The electric boiler is mainly composed of a main body, an electric control box, a 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.
       3. During the use of the electric boiler, the safety valve should be moved once a day to prevent rust from losing its original function.
       4. After all the inspection work is completed, all the tools and materials need to be put together, placed in the designated location, and then the safety record is prepared for later inquiry work.

The above is all the maintenance methods of electric boilers. Follow the steps to carry out the maintenance work of electric boilers to ensure a safe and warm winter.

The boiler price is the first consideration for every user when purchasing equipment, which makes the cost investment clearer and clearer. The same is true for natural gas boilers that have been commonly used in recent years. 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.

How much does it cost to buy a natural gas boiler? Xiaobian asked about the technicians who have many years of experience in boiler industry. He gave many factors that affect the price of the boiler. Let's take a look!

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 the gas boiler of FANGKUAI Boiler are collected from domestic and foreign high-quality brands, and both quality and post-maintenance services are guaranteed.
       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.

Many users face the problem of installing boilers after purchasing gas boiler products that suit their needs. Based on the experience of FANGKUAI Boiler technicians installing boilers on the customer site for many years, the following sections summarize the following precautions for gas boiler installation, hoping to help your boiler installation more smoothly.

First, prepare for the 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 after the completion of the 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.

Recently, FANGKUAI Boiler's pre-sales customer service staff gave us feedback, and received many consultations from users who opened the bathhouse. For the bathhouse, you can use the gas condensing boiler and choose how big the boiler is. In fact, the use of gas condensing boilers is completely ok, and there are quite a few advantages compared to coal-fired boilers.

So what are the benefits of using a condensing gas boiler?

One or eight low
       1, low energy consumption
       2, low noise
       3, low exhaust gas temperature
       4, low temperature combustion
       5, the required natural gas pressure is low
       6, the required voltage is low
       7, low water pressure
       8, Low NOx emissions

Second, three high
       1, high thermal efficiency
       2, high degree of intelligence
       3, high safety performance index

Three or three small
       1, small footprint
       2, light weight
       3, less labor demand

The condensing gas boiler produced by Fangkuai boiler adopts low-nitrogen combustion technology such as full premixing and FGR. The thermal efficiency can reach about 108%, and the natural gas is fully burned. It also has multiple intelligent interlocking control, accurate and complete self-test, and the user uses Peace of mind, peace of mind, peace of mind!

We will provide you with detailed scheme design, including actual operation cost and overall system cost, and send special personnel to conduct on-site inspection, design and installation location, and meet your needs within the feasibility limit.