The hot water boiler is a thermal energy supply equipment that meets the national environmental protection requirements. Widely used in food, printing and dyeing, chemical, pharmaceutical and other industries. As a mechanical device, good maintenance can extend the life of the equipment, so be sure to know the name of each part, the name and location of each term in the maintenance.

First, let’s look at the definition of the heating surface of a hot water boiler:

The hot surface of the hot water boiler refers to the interface that absorbs heat from the heat release medium and transmits it to the heat medium, including the convection heating surface and the radiation heating surface.

A heating surface that mainly absorbs heat from a heat release medium by a radiation heat exchange method, and mainly receives a heat receiving surface from a heat release medium by a heat transfer method. Such as water wall tubes, furnaces, etc.

Convective heating surface

A heated surface that absorbs heat from a high-temperature flue gas in a convective heat transfer manner generally refers to a heated surface through which the flue gas passes, such as a flue, a convection tube bundle, and the like.

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Boiler energy efficiency test is a test to assess whether the performance indicators of the manufacturer’s products have reached the guaranteed value. Through the analysis of the energy efficiency test method, the main factors affecting the energy efficiency test results are clarified, and through the analysis of the influencing factors, the manufacturer can adjust the short items in a targeted manner, thereby making the products more efficient and safe.

The main contents of hot water boiler energy efficiency testing include the following:

1. Boiler thermal efficiency test content:

a) Determination of hot water boiler evaporation;

b) hot water boiler excess air coefficient detection;

c) exhaust smoke temperature detection;

d) fuel combustion efficiency test;

e) hot water boiler thermal efficiency test;

f) fuel consumption;

g) Steam to coal ratio.

2. hot water boiler new product stereotyped energy efficiency test: Determine whether the boiler thermal performance indicators are consistent with the design and determine the operation mode of the equipment. Such as boiler evaporation, hot water boiler thermal efficiency, combustion efficiency, various heat losses and so on.

3. hot water boiler operation adjustment test: Determine the most economical operation mode of the boiler and identify defects in the boiler operation. Such as hot water boiler maximum load, boiler minimum load, fuel requirements, economic load, reasonable exhaust gas temperature, optimum wind coal ratio, excess air ratio, secondary air ratio and so on.

4. Comparative test of thermal performance before and after boiler reform: changes in evaporation, effects of combustion, thermal efficiency of boilers, etc.

5, fuel industry analysis, elemental analysis: to judge the quality of coal, oil, gas and other fuels, easy for enterprises to control the quality of fuel into the plant.

6, water quality testing, scale analysis: determine the quality of water, control the boiler water indicators to prevent boiler fouling. The hot water boiler energy efficiency test is completed by the organization approved by the State Administration of Quality Supervision, Inspection and Quarantine and has the boiler energy efficiency test qualification, and the hot water boiler thermal test report is issued.

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Electric boilers, especially hot water boilers, have many safety issues to be aware of during use. Some safety details should be noted during use. The gas hot water boiler has the remarkable features of environmental protection, energy saving, safety and fully automatic operation. It is very convenient to use. In addition, due to the economic operation and government policies, gas-fired hot water boilers are more and more popular.

The gas-fired steam boiler adopts the combustion machine under-position mode, the two-pass structure, the fuel combustion is sufficient, the boiler runs stably and takes up less space, and the smoke pipe is inserted with the spoiler to slow the smoke exhausting speed, increase the heat exchange amount, and the boiler thermal efficiency is high and lower. The user uses the cost hot water boiler to install the computerized boiler boiler controller.

All the functions are stored on a smart chip, which realizes the intelligent, digital, automatic and humanized boiler. The boiler intelligently controls the water temperature and automatically stops when the water temperature is heated. The large font on the screen shows the water temperature, and the temperature of the furnace water is clear at a glance. In the operation of the hot water boiler, it is necessary to wear the clothes that meet the requirements, and carefully inspect all parts of the boiler system, such as pressure gauges, safety valves, air supply pipe accessories, water level gauges, etc., before continuing to work.

When filling water, when filling the water to the specified water level, care must be taken not to operate with one hand, open the water injection valve with one hand, and close the water valve before closing the water valve. This sequence is irreversible. When the steam valve is closed, the surface should not face the water.

Prevent splashing water from hurting your face. When the boiler is already working, someone must always guard the water level and the pressure gauge, and must not neglect their duties. If you work late, you have to rest during the day so that you don’t sleep in the evening. Because if there is any carelessness, an accident will occur. The boiler is discharged every night and the water level gauge is cleaned every night. Motors and other mechanical equipment should also be inspected regularly and should be checked as soon as any abnormalities are found. Check the safety of the safety valve weekly.

Hot water boilers are generally used for heating, but there are fewer production processes that require steam. Biomass boilers: horizontal biomass boilers, vertical biomass boilers. Biomass gas heat transfer oil furnace, biomass steam boiler, biomass hot water boiler, biomass heat transfer oil furnace. The steam boiler is an energy conversion device. The energy input to the boiler is in the form of chemical energy in the fuel, electric energy, heat energy of high-temperature flue gas, etc., and is converted by the boiler to output steam, high temperature water or organic heat having a certain heat energy. Carrier. Because it is more energy efficient and environmentally friendly than steam boilers. First of all, in terms of fuel consumption, hot water boiler heating saves 20% and 40% of fuel compared to steam boiler heating. This amount is very considerable. There are two reasons for this: First, it does not have heat loss caused by condensed water and secondary evaporation. Second, the hot water heating pipe uses a special heating material, the pipe is as thin as possible to meet the needs, and the heat loss is small. The heat loss in the steam heating pipe due to steam leakage is large.

Hot water boilers require only a small amount of conventional sewage. The gas-fired steam boiler adopts the combustion machine under-position mode, the two-pass structure, the fuel combustion is sufficient, the boiler runs stably and takes up less space, and the smoke pipe is inserted with the spoiler to slow the smoke exhausting speed, increase the heat exchange amount, and the boiler thermal efficiency is high and lower. Another advantage of the user’s use of hot water heating is the flexibility to adjust the mass temperature of the hot water. When the outdoor temperature is low, it is necessary to raise the temperature of the hot water to meet people’s needs. When the outdoor temperature is high, the temperature of the hot water can be lowered, which can meet the needs of people and achieve the effect of energy saving and environmental protection. And its system maintenance costs are also very low. Hot water boilers can supply heat in areas dozens of kilometers away, such as boilers that have good performance in this regard. Although there are still some shortcomings in hot water heating, the economic benefits are remarkable, and the energy saving and environmental protection effects are better. The hot water boiler produced by our company has excellent performance, long service life and reliable operation.

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Users who have used the top hot water boilers know that long-term use of hot water boilers can cause corrosion, which has a great impact on the service life of the boiler. The function of the gas boiler ignition system is to ignite the mixture of air and fuel. The main components are: ignition transformer, ignition electrode, electric high voltage cable. A safer ignition system is called an electronic pulse igniter, which is widely used by gas boiler manufacturers such as Zhuoyi Energy Saving. It is convenient and time-saving, just press with a finger, and the safety is high, there will be no safety accident due to accidental flameout. Once the flameout state occurs, the control system can close the solenoid valve in time and shut off the gas passage. So how do you reduce the corrosion level of hot water boilers? I hope the following introduction will help you.

1. The installation of the exhaust device in the hot water boiler system is advantageous for removing the air in the hot water boiler hot water system and the gas which is precipitated from the water due to heat, thereby reducing the corrosion of oxygen.

2. Water supply deoxidation: When the rated power of the hot water boiler is greater than 4.2 MW, the water should be deaerated, and the hot water boiler with rated power less than 4.2 should be deoxidized as much as possible. The gas hot water boiler has the remarkable features of environmental protection, energy saving, safety and fully automatic operation. It is very convenient to use. In addition, due to the economic operation and government policies, gas-fired hot water boilers are more and more popular.

3. Control the PH value of the hot water boiler water: control the PH value of the hot water boiler water between 10 and 12 to form a protective film on the metal surface to avoid the occurrence of oxygen corrosion. The gas-fired steam boiler adopts the combustion machine under-position mode, the two-pass structure, the fuel combustion is sufficient, the boiler runs stably and takes up less space, and the smoke pipe is inserted with the spoiler to slow the smoke exhausting speed, increase the heat exchange amount, and the boiler thermal efficiency is high and lower. The user’s cost of use is a serious threat to the safe operation of hot water boilers and even affect the service life of the boiler. Preventing the hot surface of hot water boilers from corroding and extending the use time of boilers has become an important aspect of boiler management. By adopting the above measures, the occurrence of oxygen corrosion on the heated surface of the hot water boiler can be effectively prevented and mitigated, thereby ensuring the safe operation of the boiler.

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29MW is a hot water boiler with a rated heating capacity of 29 MW / hr. For every 0.7Mw ≈ traditional “1 ton” hot water boiler, 29MW is equivalent to a traditional 40 ton hot water boiler.
Hot water boiler – a type of boiler. It is distinguished by media. In addition, according to the medium, it can be divided into: steam boiler, hot water boiler, steam-water dual-purpose boiler, organic heat carrier boiler. Hot water boilers can also be divided into fuel-fired hot water boilers, fuel hot water boilers, gas hot water boilers, and biomass hot water boilers.

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There is also a dark room in the hot water boiler factory. Maybe you don’t know much about it at present, and it is not clear what role it has. If you are interested in the content of this aspect, you can first take a look at the introduction of the hot water boiler in the following article, which is generally very clear after reading it.

1. The dark room should have enough space, the dry area and the wet area should be strictly separated, and the various equipments should be placed properly. The darkroom should be completely protected from light. There should be ventilation and ventilation equipment and drainage system. Measures should be taken to control temperature and humidity. The darkroom floor and workbench should be kept dry and clean, and the walls and workbench should be waterproof and chemically resistant.

2. The safety light should be tested regularly. The method is to place the film on the working position, cover the black paper, open the safety light, and move the black paper every few minutes to make the different parts of the film under different time under the safety light. Then, standard processing is performed to compare the exposed portion with the unexposed portion, and it is safe to increase the blackness without significant increase, thereby determining the performance of the safety light and the time and distance for allowing the work.

3. Film development processing When the film is removed and the film is cleaned in the dark room, the film film shall not be touched. Only the side of the film shall be taken by hand, and the film shall not be forcibly inserted or withdrawn from the cassette. The development temperature should be strictly controlled between 20 ± 2 °C. Before the film is placed in the development, it should be immersed in clean water to make the surface of the film wet, so as to avoid uneven development due to the air bubbles on the surface of the film after development. The film is placed in the developer and should be stirred continuously for the first 30 seconds and then agitated every 30 seconds. The development time is 4 to 6 minutes.

4. After development and development, after completion of development, it should be thoroughly rinsed in clean water for 30 seconds, and then placed in the fixing solution. The fixing time is more than 10 minutes, which is generally twice the “permeability time”. Washing should be rinsed with clean running water for a rinse time of 30 minutes. In the process of ‘development-washing’, it is strictly forbidden to scratch the film and peel off the film.

The film drying film should be removed after removing the surface water droplets, and the drying temperature is controlled below 40 degree.

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1. Divided into power station boilers and industrial boilers according to their purposes.
2. According to the steam pressure generated by the boiler, it is divided into supercritical pressure boiler, subcritical pressure boiler, ultra high pressure boiler, high pressure boiler, medium pressure boiler and low pressure boiler.
3. Divided into large, medium and small boilers according to the evaporation of the boiler.
4. According to the heat carrier medium, it is divided into steam boiler, hot water boiler and organic heat carrier boiler.
5. According to the source of heat energy, it is divided into coal-fired boiler, oil-fired boiler, gas boiler, waste heat boiler and electric boiler.
6. According to the boiler structure, it is divided into shell boiler and water tube boiler.

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The hot water boiler manufacturers industry is neither a “sunrise industry” nor a “sunset industry”, but an eternal industry that coexists with human beings, and is still a growing industry in China. According to the statistics of the National Bureau of Statistics, there are currently more than 500 hot water boiler manufacturersabove designated size. In 2015, the sales revenue reached 176.407 billion yuan, an increase of 10.59% over the same period of the previous year. In terms of resources, the scale of assets in the boiler manufacturing industry has also expanded. As of the end of December 2015, the total assets of biomass boiler manufacturing enterprises above designated size were 173.29 billion yuan, a year-on-year increase of 9.80%. However, the overall economic efficiency of the industry declined in 2015. In 2015, the total profit of boiler manufacturers above designated size reached 11.515 billion yuan, a year-on-year decrease of 5.46%.

At present, domestic hot water boiler manufacturers are facing the dual pressures of domestic and international leading boiler companies. If the company can not further improve its process technology and equipment level in the future development, continue to improve brand influence, and ensure the leading position of the boiler industry, enterprises will be exposed to the risk of market share or gross profit margin due to market competition.

Prospective Industry Research Institute “China hot water boiler Manufacturing Industry Market Preview and Energy Saving Technology Analysis Report” analysis of factors such as comprehensive enterprise scale, product sales area, application field and industry reputation, the top ten enterprises in China’s hot water boiler manufacturing industry in 2016 are as follows (ranking In no particular order):

1 ZOZEN Boiler Co., Ltd.: https://en.zozen.com/

2 Harbin Boiler Factory Co., Ltd.

3 Shanghai Boiler Co., Ltd.

4 Hangzhou Boiler Group Co., Ltd.

5 Wuxi Huaguang Boiler Co., Ltd.

6 Wuhan Boiler Co., Ltd.

7 Jinan Boiler Group Co., Ltd.

8 Taishan Group Co., Ltd.

9 Huaxi Energy Industry Co., Ltd.

10 Suzhou Hailu Heavy Industry Co., Ltd.

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