Common sense of natural gas boiler

1. What are the combustion modes of gas boilers?

Gas-fired boilers burn high calorific value gas. In order to make the gas burn fully, a large amount of air needs to be mixed.

As we all know, there is no atomization and gasification of fuel in the combustion process of gas. The mixing mode of gas and air has great influence on flame length, flame temperature and combustion intensity.

According to the different mixing modes, the combustion modes of gas can be divided into the following three types: first, diffusion combustion, which is a combustion mode of mutual diffusion and combustion at the gas nozzle without pre-mixing. Its advantages are stable combustion and simple structure, but the flame is long, which is easy to produce incomplete combustion and carbonize the heated area.

2. Premixed partial air combustion is a combustion mode, that is, a part of air is mixed with gas in advance before combustion (the primary air excess coefficient is 0. 2-0。

8), and then burn. Its advantages are clear combustion flame, intensified combustion and high thermal efficiency.

However, the combustion is unstable, which requires high control of primary air and combustion components. Gas burners usually use this combustion method.

Thirdly, flameless combustion is a kind of combustion mode, that is, the air needed for fuel gas has been mixed with fuel gas evenly before combustion. The primary air excess coefficient is equal to the air excess coefficient when the fuel is completely burned, and oxygen does not need to be obtained from the surrounding air during the combustion process.

When the mixture of gas and air reaches the combustion zone, it can burn instantly. .

2. Knowledge of natural gas boiler operation

First, check whether the parameters of power supply instrument and the water level of boiler water level gauge are normal before the furnace; Second, start the induced draft fan, and then start the blower and water pump after confirming the normal operation;

Third, adjust the grate speed and air intake in time according to the steam supply demand, generally keep it at 6-7kg/ pressure, operate as needed, and close the steam supply valve in time to save energy and reduce consumption;

Four, each shift on time for sewage, flushing water meter and water quality testing, fill in the handover record;

Five, each shift often patrol the boiler operation, found that there is any abnormal situation timely report to the monitor, in an emergency, stop the boiler to enable the standby boiler:

Six, before stopping the furnace, turn off the power supply, seal the furnace, close the valve, lock the door, clean up, check and confirm after work;

Seven, each shift to work ten minutes in advance, do a good job of succession, to ensure safety in production.

This kind of operation knowledge is usually found in the boiler manual.

3. What problems should be paid attention to in gas boiler commissioning?

In line with the tenet of "first-class level, excellent quality and good service" and the principle of "demanding yourself according to the requirements of the most discerning users", the following service specifications are formulated to facilitate implementation.

1. Boiler debugging service: (including user training and boiler debugging) Xin Lei boiler equipment has been debugged in the factory before leaving the factory. However, due to transportation and site conditions, some combustion parameters will change, and even some failures will occur. Therefore, after installation, it is necessary to conduct a debugging to make the boiler parameters in the best state.

2。 Debugging: (1) water softener debugging: when the user's water pressure is normal (0.

2MPa or more), the water softener will be in backwashing state, and the air will enter regeneration state after being exhausted. After seeing the water in the salt tank being sucked away, it is generally believed that the water softener is normal and can be regenerated once. After the water test is qualified, it is over.

(2) Commissioning of gas-fired boiler: a. Requirements for users: (a) The air pressure of air source is stable and meets the requirements of boiler operation.

(b) The flow rate of air source meets the requirements of boiler operation. (c) The power supply voltage meets the requirements of boiler operation.

(d) Sufficient soft water. .

4. What is the common sense of the use and maintenance of gas wall-hung boilers?

During heating, because the wall-hung boiler is in full automatic control state, it is necessary to check the working condition of this machine frequently, such as combustion, temperature change, whether the intake and exhaust pipes fall off, are damaged or blocked, etc.

If you smell gas, don't use electrical switches, telephones or any electrical appliances that may cause sparks. First of all, we must close the gas valve, quickly open the doors and windows to make the air circulate, and naturally discharge the gas leaked into the room, and ask professionals to repair it.

When heating needs to be stopped after winter, it is recommended not to drain the water in the system to avoid oxidation and rust of the waterway system. The water inlet and outlet valve at the lower end of the wall-hung boiler can be closed, which can prolong the service life of the system.

Never let children or inexperienced people operate it. When you don't use or go out for a long time in winter, you must empty the water in the heating system and cut off the power supply, gas source and water source.

Regularly check whether the power supply wiring is loose and aging, and whether the leakage protection switch works normally. Regularly check whether the gas supply pipeline is in good condition, aging and cracks, and pay attention to replacing the rubber pipe regularly.

In thunderstorm weather, the power supply should be cut off to avoid lightning damage to the machine. The inlet filter should be cleaned frequently, especially in the initial operation stage.

5. How to operate the natural gas boiler?

For office workers, it is not recommended to close all radiator valves of domestic gas boilers after work.

So the room temperature is set to 12℃ when no one is around during the day. The specific setting depends on everyone's feelings. Keep a certain room temperature, so that the room temperature will not be too low at night, which will affect the comfort. Because the room temperature will drop a lot after it is completely closed.

Just like the frequent start of a car will consume more fuel, it will take several hours to get comfortable when the valve is opened at room temperature after work, and it will consume a lot of heat, which is very uneconomical. Users who charge by heat meter have a knack for using temperature control valve.

Some tips in the use of domestic gas-fired boilers: There are some tips in the use of heating, and users can achieve energy-saving and efficient insulation effects through scientific adjustment. Users who charge by area should try to reduce the frequency of opening and closing doors and windows or opening windows for ventilation during use, and avoid hanging clothes or installing heating covers on the radiators of domestic gas boilers to ensure the normal heat dissipation of the radiators.

When users go out, they can adjust the temperature control valve to a low temperature state, which can effectively maintain the indoor temperature and humidity, and more importantly, can greatly save energy consumption. Technical support:.