Industry News

In modern industry, steam generator can be used for car cleaning and car beauty. Especially in recent years, people began to use steam generator for car washing.

Electric steam generator produces high temperature and high pressure steam by electric heating, and blows away the oil dirt and rust spots of the car under high pressure, so as to achieve a good cleaning effect on the automobile equipment. And it can effectively protect the auto parts, prolong the service life of parts.

Electric steam generator is a small vertical structure, which can automatically adjust the appropriate temperature and pressure. The whole equipment only needs to connect the water source and the power source to generate steam, and the installation is simple and convenient.

Biomass boiler fuel is more widely used, and than other boilers save more than 35% of the operating cost. Biomass fuel is peanut husk, rice husk, straw, weeds, cotton stalks, branches, leaves, wood chips, etc,. but different fuels have certain differences in calorific value.

1. DZH boiler is manual operation fixed grate boiler, its main feature is simple operation, energy saving and environmental protection. DZH series boiler is highest cost-effective boiler,it is praised by our customers many years.

2. DZL boiler is a horizontal single drum three return water and fire tube chain grate boiler,it using a new furnace design,through the built-in three return threaded smoke pipe heat transfer, so that the boiler thermal efficiency up to 82.6%.

3. SZL boiler is a horizontal double drum boiler, it has the advantages of large water volume, large steam space, good steam quality, etc.

Steam boiler operation must maintain normal water level, when the water level exceeds the visible water level, called a full water accident. At this point, if we do not handle it properly, it is likely to affect the quality of steam, and even have serious consequences. Water shortage accident is one of the most common accidents in steam boiler. We should pay enough attention to it and must strictly prevent it. So today we learn about the phenomenon of boiler full of water and treatment measures.

Phenomenon of accident

1, the water level in the water table is higher than the visible edge, invisible water level;

2. High and low water level alarm sends a high water level alarm signal;

3, there is a superheater steam boiler, superheated steam temperature decreased significantly;

4, feed water flow is greater than steam flow;

5, serious steam with a large amount of water, steam pipe issued water strike, flange joint outwards steam dripping

Treatment method

1. Close the gate damper to weaken the combustion.

2. Rinse the water level gauge and check whether the indicator is correct.

3. If the water level indicator is correct, stop the water supply and open the steam boiler blowdown valve for water discharge. Pay attention to the decline of the water level until the normal water level appears.

4. After taking the above measures, if the normal water level still cannot be controlled, the furnace should be stopped immediately.

5. Open the steam trap on the main steam pipe, steam collector and steam master pipe of the steam boiler to prevent water strike in the pipe.

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.