Industry News

Horizontal gas oil fired steam boilers, heavy oil, light oil, natural gas and city gas, suitable for a variety of residential heating and production needs. What are the structure and technical characteristics of horizontal gas oil fired steam boiler?

1. Horizontal gas oil fired steam boiler adopts horizontal all-wet back three-return structure, and adopts advanced threaded smoke pipe heat transfer technology. The front and rear smoke boxes are provided with detachable doors, and another chassis, shell and insulation, burning machine, electric control box and the corresponding water and electricity lines.

2.advanced automatic control function using automatic microcomputer program control, integrated automatic pressure control, flame detection, water shortage protection, automatic alarm and other intelligent control, fool type one-button control, just a click can enter the automatic operation state, all safety protection devices start to work, without special duty, so that the operator more peace of mind, worry.

3. the safe and scientific structure design is equipped with safety valve, pressure controller, water level control protector and other multiple interlocking protection devices, safe and reliable, the use of fin type pipe tubular furnace structure, effectively compensate for thermal expansion, prevent thermal expansion cold contraction stress, make the boiler structure safe and reliable, prolong the service life.

When we use electric steam boilers for a while, we will inevitably face the rust of the boiler. The rust not only affects the beauty of the boiler, but also affects the heating efficiency of the boiler. So we need to check the boiler regularly, and if there are rust, it is found to remove the rust in time. How to remove rust of electric steam boilers?

1. While removing rust, the metal surface forms a protective film. The boiler requires some potions, such as sodium phosphate and sodium hydroxide aqueous solution.

2. When running, the water steam boiler must control the water quality. Use soft water (adding a water softener), and keep the pot water pH between 10 and 12.

3. Use compressed air as the power to spray the abrasive with a high -speed jet beam high -speed to the rusty electric heating boiler surface. With the abrasive’s impact and cutting effect on the surface of the workpiece Spend.

4. The stainless steel steam boiler should be used, and the rust is eliminated from the material.

5. Use caustic soda, but the ratio of water and alkali must be configured correctly. After configured, pour into the boiler and ignite the warmth. But this method is recommended to ask professionals to operate it.

Generally, the electric steam boiler removal is mainly used for some substances that are diluted or other strong alkali or other can react with rust but do not react with the boiler material, because the chemical composition of rust can be almost peaceful or strong or strong. The alkali reaction occurs, and the rust is removed. In addition, in order to prevent rust, the electric heating steam boiler will use the material that is not easy to rust or is galvanized on it in terms of material.

Electric steam generator is mainly composed of water supply system, automatic control system, heating system and safety protection system. Through a set of automatic control devices, the liquid level controller or high, medium, and low -electrode probe feedback controls the opening, water supply length, and heating time of the furnace lining. High steam pressure set by pressure relays decreases with the continuous output of the steam. In low water levels and medium water levels, the pump will automatically replenish. When the high water level is reached, the pump will stop hydrating; at the same time, the electric heating pipe in the furnace lining continues to heat and continues to generate steam. The pointer pressure gauge of the panel or the top immediately displays the steam pressure value, and the entire process can be automatically displayed by the indicator light.

When the electric steam generator water level alarm, how to deal with it?

1. water inlet is not smooth, water tank scaling is serious: check the isolation net of water inlet valve, clean up the slag; Clean the tank and remove scale.

2. Scale or damage of water level probe: clean the water level probe or replace it.

3. steam pipe using 70-90 degrees of hot water pipe. Over time, the inner plastic shrinks, blocking the steam outlet. Safety valve relief alarm: stainless steel bellows instead of steam pipes.

4. the temperature probe line is damaged or bitten by the mouse, the control panel can not detect the temperature alarm.

5. the control board is damaged, MCU program failure: replace the control board.

When the electric steam generator is closed, the power cannot be cut off immediately. Press the shutdown button to close the feed door power switch. And ensure that the latch of the material door has been closed, the staff can leave.

Prevent granular material from back firing, furnace overheating damage, furnace bridge scaling and spiral deformation damage. If the material door is closed due to equipment failure, it should be repaired immediately. After shutdown, all materials in the silo should be removed before maintenance.

The steam boiler has the characteristics of high work pressure, high media temperature, and complex operating conditions. The types of accidents show a variety of forms. During the operation of the boiler, the phenomenon of pressure in the boiler exceeds the highest permitting work pressure and endangered the safe operation, which is called an ultra -pressure accident. This maximum permit pressure can be the design pressure of the boiler or the defect of the boiler after testing, and the agreed work pressure depends on the intensity. In short, the risk of over pressure boilers is relatively large, one of the direct reasons for the boiler explosion accident

1. The phenomenon of boiler overpressure

(1) The steam pressure rises sharply, exceeding the allowable working pressure, pressure gauge pointer “red line person safety valve action after the pressure is still rising.

(2) Send out overpressure alarm signal, overpressure interlock protection device action to stop the boiler air supply, coal supply and air intake.

(3) The steam temperature increases while the steam flow decreases.

2. Reasons for boiler overpressure

(1) with steam units suddenly stop using steam, so that the steam pressure rises sharply.

(2) The furnace staff does not monitor the pressure gauge, and the combustion is not weakened correspondingly when the load is reduced.

(3) the safety valve fails; The spool is adhered to the valve seat and cannot be opened; The inlet of the safety valve is connected with a blind plate; The exhaust capacity of the safety valve is insufficient.

(4) The pressure gauge tube is blocked and frozen; Pressure gauge failure beyond the calibration period; The pressure gauge is damaged and the pointer indicates incorrect pressure, which does not reflect the real pressure of the boiler.

(5) overpressure alarm failure, overpressure interlock protection device failure.

(6) After the test of the boiler step-down use, if the safety valve caliber does not change accordingly (boiler step-down use, safety valve caliber should be increased), so that the exhaust capacity of the safety valve is insufficient, the steam pressure can not be controlled and overpressure.

3. Treatment of boiler overpressure

(1) Quickly weaken combustion, manually open the safety valve or release valve.

(2) Increase the water supply, at the same time in the lower drum to strengthen blowdown (at this time should pay attention to maintain the normal water level of the boiler), in order to reduce the temperature of the pot water, so as to reduce the pressure of the boiler drum.

(3) If the safety valve fails or all the pressure gauges are damaged, the furnace should be stopped in an emergency manner. After the safety valve and pressure gauges are repaired, the pressure should be increased to run.

(4) When the boiler overpressure occurs and endangers the safe operation, the pressure reduction measures should be taken, but the speed of pressure reduction is strictly prohibited.

(5) After the serious overpressure of the boiler is eliminated, the furnace should be stopped for internal and external inspection of the boiler, the deformation and leakage caused by overpressure should be eliminated, and the safety accessories of the cell should be tested.

Electric steam boiler is a kind of micro steam equipment which automatically and continuously generates low pressure steam. It can provide dry steam for steam box, steam iron and steam ironing clip machine. It is more common in food factory, staff restaurant, soymilk shop and clothing factory. The inspection free steam boiler has multiple interlocking protection functions. Electrical components are CCC and CE certified products to ensure product quality and customer benefits. Heating steam generator is mainly composed of water supply system, automatic control system, furnace and heating system and protection system.

1. High thermal efficiency:

1-2 minutes to produce steam, high thermal efficiency, less loss, good thermal efficiency, tight insulation, small heat dissipation loss

2. Easy to operate:

automatic control, automatic pressure control, automatic control system equipped with automatic water level control, automatic water inlet, boiler alarm, low water level stop furnace and other chain protection

Simple maintenance: The electric heating tube and the furnace body are connected by flange, and the external water level detection is used for easy maintenance.

3. Compact structure:

the boiler occupies a small area, compact structure and beautiful appearance, the whole machine is integrated into the factory, easy to install and transport

Electric steam boilers are one of the common boiler models. Many companies are using it. Today we will understand whether the water quality will affect the electric steam boiler. Due to the different water quality, the impurities in the water will be different. In the following, it will cause the equipment to be damaged to a certain extent and cause a variety of faults. Therefore, in general, we have requirements for water quality. So let’s look at it briefly.

1. Heating tube scalar to break it.

Due to the existence of CA2+and MG2+in water, it has precipitated with CO32- during heating. When the electric steam boiler works intermittently, these precipitation gathered to the heating pipe. After a long time, the more accumulation, the more accumulated, the thicker and thicker, and the formation of scale. Going out, not only the power is reduced, but the phenomenon of slow heating and insufficient pressure will cause the heating pipe to burn and break it so that the boiler cannot work properly.

2. The water level probe is not sensitive, and sometimes the water level is not detected.

Because the existence of the scale of the scale may not be measured when the water level is detected, the water supply motor will continue to add water, and the heating cannot be started, so that the electric steam boiler steam export will flow out.

3. Furnace scaling leads to danger.

If the boiler often uses water containing impurities, it will not only appear the above three kinds of failure, but also bring a certain risk to the furnace body. The scale accumulates thicker and thicker on the inner wall of the furnace, reducing the space of the electric heating steam boiler furnace body. When it is heated to a certain pressure, the air outlet can not be discharged smoothly due to the blockage of the scale. The force of the furnace body increases, and the furnace body may burst for a long time.

The water source of the electric steam boiler should use less hardness of water, general enterprises use tap water or groundwater. Because both kinds of water have strong solubility, they contain various impurities to varying degrees. Water softener can be used to prevent the formation of scale, and enterprises suggest that they should adhere to pressure sewage every day.

1. Boiler water quality must meet the national standards, boiler should be equipped with water softener, do not use the water softener will cause boiler scaling, affect the efficiency and service life of the boiler, serious will cause accidents;

2. In order to ensure the normal operation of the burner, please use the fuel labeled by the equipment for the oil-fired boiler, and prohibit the use of inferior oil and fuel inconsistent with the label. Clean the oil tank, pipeline, filter and oil pump of the burner regularly according to the oil quality. Gas boiler to meet the requirements of natural gas or liquefied gas, gas pipelines should be installed pressure regulating valve (pressure reducing valve), pressure gauge. The required flow and pressure of the burner should be satisfied. To ensure the operation of boiler burner.

3. Before use of the boiler, it must ensure reliable grounding before use. Once a month, professionals are checked to the main road (power entry, contactor, circuit breaker, burning machine, etc.). 

4. Manual emission tests must be performed on the safety valve every week, and the water level meter of the boiler must be washed. The water level electricity must be cleaned on a regular basis.

5. After the boiler is used, at least pressure (less than 0.15MPa) is drained once; the sewage pipes should be properly connected to the safe place;

6. If the ambient temperature is below 0 ° C, please pay attention to the anti -freezing work of the water supply pipe road, and after the work is completed, put the remaining water of the pump pump head to avoid frozen pump heads.

7. When the boiler is stopped, it is recommended to turn off the power, oil road (gas road) and water supply valve in time.

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