Electric steam boiler (vertical)

2020-07-11

summary

With the standardized management of electric steam boilers by the country, the design of this series of steam boilers complies with various professional manufacturing standards such as TSG G0001-2012 "Boiler Safety Technical Supervision Regulations", JB/T10393-2002 "Technical Conditions for Electric Heating Boilers", NB/T 47034-2013 "Technical Conditions for Industrial Boilers", and TSG G0002-2010 "Boiler Energy saving Technical Supervision and Management Regulations".

Boiler model
According to JB/T1626-2002 "Method for Model Compilation of Industrial Boiler Products".

Boiler structural characteristics
1) This boiler adopts direct heating with built-in heating tubes, and its characteristics are:
① Direct contact with water increases the heat transfer area, improves thermal performance, and ensures product output.
② Strong mechanical performance, compact structure, small size, easy maintenance, replacement, and installation.
2) The boiler adopts electric heating, with only surface heat loss, and a thermal efficiency of over 98%.
3) Heating is uniform, stable, and has a large evaporation area.
4) In addition to conventional pressure control, it is also equipped with an automatic sewage system, an intelligent control system, automatic interlocking, and automatic alarm to achieve fully automatic control. The heater is started and stopped in stages to reduce the impact on the power grid, and has automatic protection functions such as overheating, overvoltage, water shortage, short circuit, phase loss, and leakage. It is safe, reliable, and easy to operate.
5) The water level sensor equipped in this boiler has automatic control of water supply, water level alarm, and interlocking functions. When the water level is below the low water level alarm value control point, automatically start the feed water pump to supply water to the boiler; When the water level falls below the minimum safe water level control point, an automatic sound and light alarm will sound and the heating element will be cut off, requiring manual reset. When the water level exceeds the maximum safe water level control point, the automatic sound and light alarm does not interlock.
6) The boiler is equipped with automatic control devices for grouping heaters into operation and grouping them out of operation; Set up a load automatic adjustment device.
7) The power cabinet and control cabinet of the boiler comply with the provisions of GB/T14048.1, GB/T5226.1, GB7251.1, GB/T3797, and GB50054. The power cabinet is equipped with obvious and effective segmentation devices, and the control cabinet is equipped with an emergency stop button. The selected electrical appliances meet the requirements of dynamic stability and thermal stability under short-circuit conditions, and are used to disconnect short-circuit currents, meeting the on/off capability under short-circuit conditions. The metal shells or potentially live metal parts of the boiler, its power cabinet, and control cabinet shall have reliable electrical connections with the grounding terminal, and the connection resistance between them and the grounding terminal shall not exceed 0.1 ohms. The grounding terminal has sufficient size to withstand the possible grounding current and is clearly marked with a grounding symbol on the main grounding terminal.
8) Under normal working conditions, the pressure inside the boiler is maintained within the range set by the user. When the pressure inside the boiler is lower than the set pressure, the electric heating tube starts heating. When the pressure inside the boiler is higher than the set pressure, the electric heating tube stops heating, and so on. When the boiler controller detects that the boiler pressure is higher than the maximum pressure set by the user, the electric heating tube stops heating and alarms. When the pressure continues to rise, the safety valve opens to release pressure.

Electrical control
This series of boilers adopts a PLC automatic control system. The control system uses PLC as the control and data acquisition core, inputting the overpressure protection signal of the pressure controller, the water level control detection signal of the water level sensor, the extremely low water level detection electrode signal, the ultra-high water level detection electrode signal, the motor protection detection signal of the feedwater pump, and the various signals and overpressure protection signals of the pressure transmitter controlling the burner, making it rich in artificial intelligence and ensuring the safe and reliable operation of the boiler. The functional features are as follows:
1) The operation interface is intuitive and simple, and the running status is clear at a glance
Adopting a high-resolution color touch screen.
The multi-level pop-up menu in Chinese simplifies, organizes, and intelligentizes boiler monitoring.
Chinese fault repair guide, easy to operate.
● Generate analysis reports
● Implement boiler system load regulation and automatic fault alarm
Equipped with standard RS232/485 interface and adopting MODEBUS protocol, it can connect with building automation or DCS and achieve group control function for multiple boilers. Equipped with scale detection function to improve energy-saving operation of boilers;
Suitable for people of any cultural level.
2) Fully automatic operation, easy and effortless operation
● It has automatic detection function.
● Equipped with automatic detection and alarm function for low water level limit;
3) High quality hardware and comprehensive software ensure an optimized system that is efficient and reliable
Adopting PLC with strong anti-interference performance and long service life;
Multiple chain protections coexist, ensuring the reliability and safety of the system;
● There is a system debugging password, and people without permission cannot change the system operating parameters;
4) Record fault history for easy maintenance and repair
Automatically record the running time of the water pump and burner;
If the boiler malfunctions, it should be safely shut down and a screen should pop up to record the time and content of the first dozens of malfunctions. Users can quickly identify the cause of the malfunction according to the maintenance guide;
5) Multi scheme control function selection and rich expansion functions allow customers to have more choices
PLC modular expansion modules and sufficient reserved ports reduce users' repeated investment in special needs development;
Multiple boilers can be networked for use, without the need to set up a main console, allowing the control system to automatically select the number of operating boilers and allocate the load of each boiler based on the user's steam consumption;
● It can be easily interconnected with current office automation networks (WINDOWS9X, WINDOWSNT, NOVELL, etc.) and factory automation control networks to achieve remote monitoring of boiler water quality and boiler operation status;
Computers can be used as monitoring screens;