Boiler Economizer

Boiler economizer is an indispensable part of modern industrial boilers. Its working principle is mainly to recover the heat in the boiler exhaust gas, convert it into hot water or steam, and then supply it to the boiler for use, thereby improving the thermal efficiency of the boiler and reducing energy consumption.

In actual use, sometimes the boiler economizer will produce abnormal noise when water is inlet, which may not only affect the normal operation of the equipment, but also have an adverse effect on the life of the equipment.

I. Possible causes of abnormal noise when water is inlet to the boiler economizer

Hydrodynamic factors

When the boiler economizer is inlet, the water will generate certain vortexes and reflux phenomena when it passes through the pipes and the inside of the economizer. These vortexes and reflux phenomena will generate reflux pressure on the water pump, causing vibration and noise of the water pump components. Especially when the water flow speed is fast and the flow rate is large, this vortex and reflux phenomenon will be more obvious, resulting in greater noise.

Energy saver installation position and pipeline layout

The installation position and pipeline layout of the boiler economizer will also affect the noise when water is inlet. If the economizer is installed at the bend of the water inlet pipe or the pipe layout is unreasonable, the water flow will generate greater resistance when passing through these positions, resulting in noise. In addition, if there is a gap at the connection between the water inlet and outlet of the economizer and the pipe or the installation is not firm, abnormal noise will also be generated.

Problems with the internal structure of the economizer

The internal structural design of the boiler economizer will also affect the noise during water inlet. If the heat exchange tubes inside the economizer are not arranged neatly, the spacing is uneven, or there are problems such as blockage, the water flow will have irregular flow and impact when passing through these positions, resulting in noise.

Problems with matching water pumps and economizers

Problems with matching water pumps and boiler economizers may also cause abnormal noise during water inlet. If the parameters such as the lift and flow rate of the water pump do not match the economizer, or the selection of the water pump is unreasonable, it will cause excessive pressure fluctuations and vibrations when the water flow passes through the economizer, resulting in noise.

Water quality problems

Water quality problems may also affect the noise during water inlet of the boiler economizer. If the impurity content in the water is too high, the scale is too much or the water quality is unstable, the heat exchange tube inside the economizer will be blocked or corroded, which will affect the normal flow of water and the heat exchange effect, and then generate noise.

II. Measures to solve the abnormal sound of water inlet of boiler economizer

Optimize the hydrodynamic design

For the noise problem caused by hydrodynamic factors, the generation of eddy current and backflow can be reduced by optimizing the hydrodynamic design. For example, reasonable guide devices and diffusers are set at the water inlet and outlet of the economizer so that the water can flow smoothly into and out of the economizer.

Adjust the installation position and pipeline layout of the economizer

For the noise problem caused by the unreasonable installation position and pipeline layout of the economizer, it can be solved by adjusting the installation position and pipeline layout of the economizer. Ensure that the economizer is installed on the straight section of the water inlet pipeline, and the pipeline layout is reasonable and smooth.

Check and repair the internal structure of the economizer

For the noise problem caused by the internal structure of the economizer, it is necessary to regularly check and repair the internal structure of the economizer. Ensure that the heat exchange tubes are arranged neatly, the spacing is uniform, and there is no blockage.

Match the right water pump

For the noise problem caused by the mismatch between the water pump and the economizer, it is necessary to select a suitable water pump to ensure that the pump’s head, flow rate and other parameters match the economizer. At the same time, it is also necessary to pay attention to the rationality of the water pump selection to avoid problems caused by over- or under-selection.

Control water quality

For the noise problem caused by water quality problems, it is necessary to control the water quality. Regularly clean the impurities and scale in the water to maintain the stability of the water quality. At the same time, water softeners and other equipment can also be used to reduce the hardness of the water and reduce the generation of scale.

The reasons for the abnormal noise of the boiler economizer when water is inlet may involve multiple aspects, including hydrodynamic factors, economizer installation location and pipeline layout, economizer internal structure problems, water pump and economizer matching problems, and water quality problems. For these problems, corresponding measures need to be taken to solve them to ensure the normal operation of the boiler economizer and extend the life of the equipment.