Industry News

When the steam boiler is running, we need to check the outside of the steam boiler, so what do we need to check?

1. Whether the safety attachment is complete, sensitive, and reliable, whether the installation of security attachments meets the requirements of relevant regulations.

2. If necessary, you can test the pressure gauge to perform safety valve exhaust tests.

3. Whether the auxiliary equipment (fan, pump) runs normally.

4. Whether the self -control equipment, signal system and various instruments are sensitive and reliable.

5. Whether all kinds of doors and holes are tight, or have no leakage and corrosion.

6. The steam bag wall that can be observed in the combustion room is normal, whether the water -cooled wall is normal, whether there is deformation or other abnormalities.

7. Whether the combustion is stable and whether the chimney is hacking.

8. Whether the boiler wall, structure, platform, escalator, etc. are intact: Whether the water treatment equipment is running normally.

9. Whether the facilities of the boiler room meet the requirements of relevant regulations and whether the management is normal.

10. The welds of the area can be seen in the boiler, and whether the cracks are cracks (seams).

Atmospheric pressure hot water boilers are usually set up at the top of an air outlet, internal pressure and external pressure balance, high safety factor, rarely explosion or other sudden accidents, usually used in residential areas or office buildings, to provide domestic water and heating.

Although atmospheric pressure hot water boilers are less dangerous, it does not mean that the staff can neglect their duties. When operating it, it is necessary to check the boiler regularly, observe the water level, avoid low water level, dry burning and other situations, in order to avoid dangerous accidents, or reduce the service life of the boiler. Xinda Boiler summarizes the following 15 matters for boiler safety.

1. Strictly implement the rules and regulations, earnestly study the professional knowledge related to the boiler, to ensure the safe and stable operation of the boiler.

2. When the boiler starts working, the user unit and individual shall not change the boiler structure, valve and piping system without authorization.

3. Before taking over the shift, inspect all kinds of equipment according to regulations, including water tank water level (hot water tank, expansion water tank), energy consumption (boiler gas meter), thermometer (hot water tank temperature, boiler heat medium water temperature), etc., check the operation record, check the equipment, and understand the boiler operation situation in detail.

4. The replacement personnel shall arrive at the boiler room in advance according to the regulations, shifts and time, and understand the operation of the boiler.

5. The shift replacement should make preparations in advance, carry out careful and comprehensive inspection and investigation, and maintain the normal operation of the boiler.

6. The personnel on shift should introduce the equipment operation, water quality and boiler blowdown to the personnel on shift. Without the handover procedures, the personnel on shift should not leave the post.

7. Keep the boiler body clean, no dirt, no leakage, no rust and corrosion, and fill in the equipment maintenance records carefully and in detail.

8 Boiler room is one of the key departments of the use of boiler units, in addition to the boiler room staff, relevant leaders and security, security, department management personnel, other personnel without permission is not allowed to enter.

9. It is prohibited to store inflammable and explosive other sundry materials in the boiler room. The oil drums and oil POTS that need to be filled with a small amount of lubricating oil and cleaning oil should be stored in the designated place, and pay attention to check whether there are explosives in the combustion.

10. Boiler room should be equipped with fire extinguishing equipment, careful management, do not move or use for other purposes.

11. Boiler room floor, walls, doors and Windows are always kept clean and hygienic.

12. Leaders in charge shall check operation records and environmental sanitation regularly and irregularly to find problems and solve them in time.

13. Go to work on time according to the prescribed time, make a good record of shift handover, and do not leave the work at will or ask for leave.

14. It is strictly prohibited to drink alcohol, doze off, gamble and fight in the boiler room once found serious treatment.

15. Timely report of equipment failure and accident (timely report to the person on duty at night), write a written accident report in a down-to-earth manner. After the investigation is clear and responsibilities are clarified, the negligence caused by accident losses shall be investigated and dealt with.

For customers in different industries, according to the needs of their own industry to choose the correct type of steam boiler is very important, which is related to the cost of the boiler later input and use. Xinda boiler summed up some steam boiler selection methods for your reference.

1. Product quality

In the choice of steam boiler we first look at the quality of the product, because the steam boiler belongs to the pressure vessel, with working pressure, so its normal operation is particularly important, we buy to see whether the product information is complete, product quality is good, so as to ensure the long-term operation of the boiler.

2. Product brand

For the boiler, a good product brand has a certain economic strength, workmanship quality, perfect after-sales service. When we buy steam boilers, we should choose big brand manufacturers, especially the boiler manufacturers of grade A, so that the brand of the product has the strength.

3. Technical parameters

When we buy steam boilers, we need to understand the various parameters of the boiler, such as the thermal efficiency of the boiler, fuel consumption, boiler size, boiler weight, combustion mode and so on. Different manufacturers produce different boiler products. We need to compare and find out the excellent steam boiler products.

4. After-sales service

Steam boilers are used in factories. Due to long-term operation, they need to be maintained and maintained. At this time, after-sales service is particularly important.

Therefore, it is suggested that when choosing boiler equipment, we must carefully choose a good boiler manufacturer. For example, Xinda Boiler, focusing on boilers for more than 50 years, has rich experience in boiler production, and the boiler price is relatively low. Compared with other boilers of similar manufacturers, the boiler has higher efficiency and larger heating area. Boiler cost control is lower. Therefore, Xinda boiler is a reliable boiler manufacturer

The enterprise should adjust the operation state of the gas boiler according to its actual needs. The boiler does not run all the year round, and it will be stopped for a period of time and then started again. If the gas boiler has been shut down for a long time, before starting again, we need to do the following things to ensure that the gas boiler can maintain a stable working state for a long time.

The first is to clean the boiler, because the boiler has not been used for a long time, the inside and outside of the boiler will accumulate a lot of dust, we need to clean it, in order to clearly find the actual situation of the boiler.

After the boiler is cleaned, it must be dried with hot air, but it can not be heated at the same time for the furnace wall and other accessories, which may have adverse consequences. The correct way is to place an electric heater at the bottom of the boiler for heating.

When the boiler begins to use, it is necessary to place the desiccant on the anti-corrosion tray, so that the tray can maintain a good drying effect, which contributes to its normal use, so as to promote the thorough play of the efficacy of the gas boiler.

In addition to the long-term suspension of the use of gas boilers need to pay attention to the above operation, daily maintenance is also very important, must pay attention to every few months to check a desiccant, add in time; And check the use of boiler accessories regularly, if there is damage, it should be repaired or replaced in time.

To achieve the above four tasks, we can ensure that the gas boiler restarts to the previous good performance, provides the required heat source for enterprises to resume work, and make it worthy of full play.

Now more and more factories choose to use steam generators, so, when buying steam generators, what details need to pay attention to?

1. Thermal efficiency of boiler:

Some customers choose low -efficiency steam generators for cheap prices. In the short term, it’s really cheap. But over a period of time, it will be found that the fuel consumption of inefficient steam generators will be very high, and the gas production per unit of fuel will be very low. Over the long term, it is still a loss.

2. Rated evaporation capacity:
The selection of suitable boilers should be based on their own needs to choose, if the demand for steam is small, and bought a steam generator with high evaporation rating, that is overqualified, but if the steam needs to be large, but bought small rated evaporation equipment, it is not appropriate.

3. Rated steam pressure:
Each factory has its own gas standards, so when buying a steam generator, it is also necessary to pay attention to the rated steam pressure.

4. Rated steam temperature:
In the same way as the rated steam pressure, the rated steam temperature of the steam generator is selected according to the needs of the gas equipment. How high the steam temperature of the gas equipment is needed, then the steam generator with the rated steam temperature should be selected.

When the hotel chooses the hot water boiler, it is necessary to judge the height of the floor to measure whether the layout of the boiler pipeline is convenient. In addition, it is also necessary to calculate the heating area and the number of rooms, so as to choose the suitable type of hot water boiler. In the actual selection, we should pay attention to the following issues:

1, hot water boiler is divided into atmospheric pressure and pressure hot water boiler. If you choose pressure hot water boiler, then you need special equipment supervision and inspection institute (institute) for external inspection every year, every two years for internal inspection.

2. Pay attention to the water quality requirements of gas-fired hot water boilers. If the water quality of your boiler does not meet the normal standards, you can pass the test and simple treatment, to ensure that the water quality is up to standard; Of course, you can also look for boiler manufacturers for professional treatment.

What is a fire tube boiler?

In a fire tube boiler, high-temperature flue gas produced by the burner flows through a threaded pipe surrounded by water to heat a mixture of water, steam or soda outside the wall of the pipe to produce steam or hot water.

What is a water tube boiler?
The operation mode of water tube boiler and fire tube boiler is just the opposite, water in the boiler tube circulation flow, and the pipe is surrounded by high temperature flue gas, high temperature flue gas to the water pipe who heat, produce steam or hot water.

The main difference between the two types of boilers is:

1. Water tube boiler pressure range is wide, can break the pressure limit, can meet the steam supply requirements of more than 2.5MPa. Fire tube boilers are limited by material wall thickness and pressure and are used for pressure below 2.5MPa.

2. Fire tube boiler is shell boiler. Limited by the equipment and tooling of various boiler manufacturers, it is difficult to make fire tube boiler which is too large, usually below 35t/h.Water tube structure boiler can be realized into large scale boiler, and the boiler above 35t/h usually adopts the water-tube structure.

3. Fire tube boiler has a compact structure, under the same output, the shape and equipment weight are lower than fire tube boiler. Water tube boiler because of the larger volume, there is more space for the superheater arrangement, so the water tube boiler occupies a relatively large area.

For hot water boiler, a good running state is very important, which is directly related to the safety and efficiency of the boiler operation. So, we will talk about it today. What are the matters that need special attention during the operation of hot water boilers?

1. Wear the designated work clothes before work, check the boiler water supply, drainage, air supply pipe accessories, safety valve, pressure gauge, water level gauge is flexible, confirm the safety before starting to work.

2. The boiler water level can not exceed two thirds of the water level, low water level is not less than one third. Usually, the water level is maintained at 1/2 or higher.

3. During the working of the hot water boiler, it is necessary to check each component and observe the pressure and water level. If there is overpressure or water shortage, the boiler must stop running, put the ash in front, and inject a small amount of cold water, but not a large amount of cold water to avoid accidents. During the operation, the fireman is not allowed to leave his post without permission.

4. Conventional piezoelectric hot water boiler sewage, each shift, before the sewage should be properly adjusted water level, slightly higher 2/3, and then sewage.

5. Water gauge is washed once per shift. When flushing, according to the demarcation procedure, first plug the water valve, open the drain valve, flush the steam valve. At this point, pay attention to whether the steam is blocked. Then plug the steam valve, and watch for water blockage

6. When the hot water boiler is in normal operation, the steam pressure shall not exceed the specified working pressure, and the safety valve shall be checked once a week.

The above is the need for attention during the boiler operation, to help you better understand the hot water boiler, away from dangerous accidents.

Electric steam boiler is to heat water through electric heating element, so that the temperature of water is constantly rising until evaporation, so as to obtain steam with a certain pressure. It can be widely used in clothing, leather and sauna and other places where steam is needed.

In the daily operation of the boiler process, there are often some small problems, now our team common failures to give some corresponding solutions.

1. The boiler does not heat up

(1) If the boiler heating pipe connection is broken, check and reconnect the heating pipe connection gas

(2) The boiler heating tube is damaged, check and replace the boiler heating tube.

(3) If the contactor is broken, check and replace the boiler contactor.

(4) If the pressure controller is bad, check and replace the boiler pressure controller

(5) If the water level control box is damaged, check and replace the boiler water level control box

2. Safety valve leakage phenomenon

(1) The safety valve is broken, check and replace the safety valve.

(2) The boiler pressure controller is faulty, check and replace the boiler pressure controller

(3) The water level control box is damaged, check and replace the water level control box.

3. Pressure gauge reads too high or too low

(1) If the boiler pressure controller fails, check, adjust and replace the boiler pressure controller.

(2) If the pressure gauge is damaged, check and replace it.

4.When the boiler pressure is lower than 4 Bar, the heating indicator lights up, but the phenomenon of pressure drop appears

(1) The voltage at both ends of the heating tube is low. Check whether the voltage at both ends of the heating tube is normal

(2) If the water level is too high due to scale accumulation of water level probe, clean the water level probe.

(3) Too much scale in the boiler, clean up the scale in the boiler

(4) The steam volume is too large to adjust the steam volume.

(5) There is steam leakage in the boiler, check whether there is steam leakage in the boiler and deal with it.

(6) The heating tube aging, check the heating tube power, if the power is small replace the heating tube

5.When heating, it is easy to trip
Boiler heating tube damaged, replace the heating tube

6. Boiler pressure is often lower than 4bar heating indicator light is not bright, and there is pressure drop phenomenon

(1) If the pressure controller is faulty, check, adjust and replace the pressure controller.

(2) In case of water shortage in the boiler, the failure of the water refill system causes the water refill time to be too long. Check whether the boiler water refill system has blocked pipes or insufficient water inlet power (water pump failure).

Proper operation and shutdown is an important measure to maintain the long service life of electric steam boiler. Today we explain how to use the electric steam boiler correctly, we hope to help you with your work.

Operation Steps:

1. Connect the water pipe with the water inlet pipe of the water tank, open the tap water valve to supply water, and there is an automatic water level control device in the water tank.

2. Switch on the power supply, and then close the power switch, water indicator light, water pump began to supply water to the boiler, water level rises to the limit value, heating indicator light, electric heat pipe heating work, water pump to continue to add water, water level to the upper limit set value, water indicator light out, water pump to stop adding water.

3. When the pressure rises to the maximum set value, the pressure controller opens, cut off the power supply, the heating indicator light goes out, the heating tube stops heating; When the pressure drops to the minimum set value, the pressure controller draws, the heating power is connected, the heating indicator is on, and the electric heat pipe works.

4. Open the steam valve, pay attention to avoid the steam valve all open at once, otherwise it will make the pressure in the furnace drop instantaneously, affecting the continuous use.

5. Normal steam supply, with the continuous output of steam, the water level in the furnace continues to decline, when the water level drops to the limit value, the water supply indicator light, pump water supply. And so it goes round and round.

2.Stop the boiler

1.The (automatic, manual) transfer switch rotation stop position, at this time the boiler stops heating.

2. Use up the steam in the boiler, turn off the emergency stop switch.

3. The main circuit breaker in the control cabinet must be broken off for a long time.