Guide: When the steam boiler is running, the water in the drum is heated to become steam. The upper part of the drum is steam and the lower part is water, and the minimum safe water level is set to ensure the safe operation of the boiler. By installing a boiler water level gauge and a water level sensor to monitor the boiler water level, what is the principle of the boiler water level gauge? The water level gauge needs to be flushed regularly. What are the flushing methods?

When the steam boiler is running, the water in the drum is heated to become steam. The upper part of the drum is steam and the lower part is water, and the minimum safe water level is set to ensure the safe operation of the boiler. By installing a boiler water level gauge and a water level sensor to monitor the boiler water level, what is the principle of the boiler water level gauge? The water level gauge needs to be flushed regularly. What are the flushing methods?

1. Principle of Boiler Water Level Gauge

　　1. The water level gauge of the boiler is connected with a transparent glass tube at the bottom of the boiler, because the boiler and the glass tube are open at the upper end, and the bottom is connected to form a communicating device. The boiler automatically replenishes water, so when the liquid is not flowing, the inner and outer liquid levels are level, and the height of the liquid level in the boiler can be known by observing the liquid level in the tube. This is the principle of the connector.

　　2. The boiler drum is a large container, and the water level gauge is a small container. When the two are connected, the water level must be at the same height, so the water level displayed on the water level gauge is the actual water level of the drum.

2. the flushing method of the water level gauge

　　The flushing method of the boiler water level gauge is divided into steam flushing and water flushing. The details are as follows

　　1. Water flushing: First, close the first and second valves on the steam side of the water level gauge, and the second valve on the water side to isolate the water level gauge. Observe the boiler water level and then open the drain valve of the water level gauge. After the water is drained, close the drain valve. At this time, the flushing of the water level gauge starts. The flushing water level timer controls the pressure of the flushing water by opening and closing the secondary valve on the water side. Slowly and slightly open the secondary valve on the water side of the water level meter so that the water flows through the connecting pipe between the secondary valve on the water side and the valve on the water vapor side in turn. , Steam side secondary valve, water level gauge, make the water level gauge full of water, then close the water side secondary valve, open the drain valve, rely on the pressure in the water level gauge and the weight of the water to take away the dirt. Check after repeated washing several times. If the water level gauge is clear, stop washing.

　　2. Steam flushing: firstly close the primary and secondary valves of the water level gauge completely, then slightly open the drain valve, open the primary valve on the steam side to fully open, and then slowly open the secondary valve on the steam side by 1/5 circle, using high pressure Steam flushes the fouled mica flakes, adjust the flow of high-pressure steam by controlling the opening of the secondary valve on the steam side (the opening should not be too large, otherwise the fuse will block the channel), the flushing time is 3-5 minutes, if the water level gauge is already Clear, can stop washing work. After flushing, close the secondary valve, drain valve and primary valve.

The working principle and flushing method of the water level gauge are introduced above. Understanding the operation principle and use method of the equipment will help the correct operation and use of the boiler. Xinli Boiler has been committed to boiler production and research and development for more than 30 years, and has a good understanding of various operating conditions and troubleshooting of boilers. If there are boiler operation problems or related technical problems, please consult our company. If there are boiler procurement plans and maintenance issues, they are also You can call our company.