Reasons for water hammer in pipes and equipment
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In production, liquid slugging often occurs in pipes and equipment. Could you please tell me the reasons for this phenomenon?
The cause of water hammer in piping systems is usually the transition between vapor and liquid phases within the pipes, which creates a temporary vacuum in the fluid flow. The surrounding fluid then rushes in suddenly, generating a loud banging sound. This phenomenon occurs frequently in steam systems and is commonly referred to as \"water hammer.\" In severe cases, it can damage the piping equipment.
Agree with the person above; this phenomenon actually occurs as well when using home heating systems.
This is what is commonly known as \"water hammer,\" and it usually occurs in steam pipes or cooling water pipes that are connected to steam pipes. The reason for this is likely the absence of a drain valve in the pipeline; in fact, a drain valve serves the purpose of allowing separation between steam and water. In steam pipelines, condensation water is generated at certain sections, and if this water is not removed, water hammer effects can occur as the steam flows. So, generally, a drain valve is installed at the end of the steam pipe.
In addition to steam, it is also possible that the temperature of the insulated pipeline is too high. Caused by the vaporization of some low-boiling-point materials
In short, it is caused by gas-liquid mixed transport.
It is mainly because the condensate in the pipes has not been drained; when the steam valve is opened, the superheated steam comes into contact with water, resulting in water hammer!
In pressure pipelines, sudden and significant, repeated, rapid changes in pressure occur due to abrupt changes in the flow velocity of the liquid; this phenomenon is known as water hammer. The basic causes of water hammer are as follows: 1. When the valves in a pressure pipeline are suddenly closed or opened, or when a water pump stops or starts suddenly, an abrupt change in flow velocity occurs, leading to a rapid change in the momentum of the liquid and thus a significant change in pressure. Water hammer can also occur if the check valve on the pipeline fails. In the steam pipeline. 2. If the pipes are not heated sufficiently and water is not removed thoroughly, part of the steam delivered will condense into water, causing its volume to shrink suddenly and creating a local vacuum. The surrounding medium will then rush toward this area at high speed, resulting in loud noises and vibrations. When water hammer occurs, the pressure increase can be many times that of normal pressure, subjecting the pipe wall material to high stresses ； Repetitive changes in pressure can cause vibrations in pipes and equipment, and in severe cases, it can lead to damage to the pipes, pipe fittings, and equipment.