How to determine the failure of a steam trap

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1. Strainers generally discharge water intermittently. 2. Most of what comes out is water; it’s abnormal if steam is released frequently. 3. It’s also incorrect not to discharge water

1. First, determine what type of drain trap it is. 2. Check the drainage condition and the temperature of the water coming out. 3. Based on the different types—such as bucket-type or thermodynamic types—determine where the problem lies

It’s too theoretical; I’d like to ask about the phenomena that occur in practice. 2# phy3869180

I think the 3rd and 4th floors are fully covered. We also made our judgment based on these circumstances. If professionalism is required, one can hire a company that specializes in hydroscanners; they have specialized tools for testing. In our case, after conducting such a test, 80% of the samples were found to be Unqualified. Hehe! ! !

The most commonly encountered types are float-type and ball-type steam traps. Generally, the faults manifest as follows: 1. No water or steam is discharged, and a large amount of water flows through the bypass valve; the cause is usually impurities blocking the float or jamming the ball. 2. No drainage, only exhaust – this might be due to a stuck float. My knowledge is limited; let’s discuss it.

I. The common faults of steam traps are divided into three types, namely blockage, venting, and leakage. 1. Blockage: The causes of blockage can be internal or external. (1) Internal causes include defective components in the steam trap itself or unexpected malfunctions. ⑵External factors such as improper selection of the steam trap, air locks, and filters clogged with impurities. 2. Leakage: This fault occurs when the valve disc of the steam trap fails to close and remains in an open position, resulting in continuous discharge of condensate and steam. ⑴The internal cause is that the components of the steam trap itself are of poor quality or experience unexpected failures. ⑵External factors such as improper selection of steam traps, poor operating conditions, and unreasonable installation. 3. Leakage: refers to the fault of steam leaking out from within the check valve. The reason is the same as that of spraying. II. The inspection methods for steam traps include: visual inspection ； Hearing ； There are three types of touch. Sometimes all three methods are used together. 1. Visual inspection: A method of making judgments by observing with the eyes. In cases where condensate is discharged into the atmosphere, it can be inspected simply by visual inspection without the need for any tools ； However, in cases where condensed water is recovered (in closed pipelines), relying solely on the eyes is not sufficient; often, assistance is needed for verification. 2. Auditory inspection: Use hearing to detect the sound of the mechanism’s operation in order to determine the operating status of the steam trap. (Requires certain professional skills) 3. Tactile inspection: Feel the temperature by hand to check the operating condition of the steam trap. (Requires certain professional skills) 4. Utilize the installed testing equipment in conjunction with visual inspection ； Hearing ； The three tactile detection methods can accurately determine the quality of a check valve.

I don’t know what type of strainer you are using. We use a free-floating ball type. The failure is mainly caused by a problem with the stainless steel ball inside the desiccant trap: either the ball leaks or it becomes deflated and is unable to lift the switch valve, preventing the condensate from being drained. If there is a steam flow meter, its flow reading is zero and the temperature of the equipment drops significantly. (There is another phenomenon that resembles that of a faulty desuperheater: when there is no material left in the equipment, it continues to be heated. As a result, steam does not exchange heat and no condensate is produced, so the steam flow meter also shows zero.) When the strainer bypass valve is opened, a sound of water flowing can be heard; the sound of water is different from that of steam, making it easy to distinguish between the two. If there is a large amount of water after the bypass is opened, it indicates that the steam trap is not working efficiently. Or the displacement is insufficient, and a larger-displacement trap needs to be replaced. These are just my personal opinions for reference only.

It was originally designed to discharge water intermittently; therefore, it’s definitely not right to keep releasing steam. You can use a stethoscope to pause and listen for a few moments, then compare the sounds!

Repost: I. The common faults of steam traps fall into three categories, namely blockage, discharge, and leakage. 1. Blockage: The causes of blockage can be internal or external. (1) Internal causes include defective components in the steam trap itself or unexpected malfunctions. ⑵External factors such as improper selection of the steam trap, air locks, and filters clogged with impurities. 2. Leakage: This fault occurs when the valve disc of the steam trap fails to close and remains in an open position, resulting in continuous discharge of condensate and steam. ⑴The internal cause is that the components of the steam trap itself are of poor quality or experience unexpected failures. ⑵External factors such as improper selection of steam traps, poor operating conditions, and unreasonable installation. 3. Leakage: refers to the fault of steam leaking out from within the check valve. The reason is the same as that of spraying. II. The inspection methods for steam traps include: visual inspection ； Hearing ； There are three types of touch. Sometimes all three methods are used together. 1. Visual inspection: A method of making judgments by observing with the eyes. In cases where condensate is discharged into the atmosphere, it can be inspected simply by visual inspection without the need for any tools ； However, in cases where condensed water is recovered (in closed pipelines), relying solely on the eyes is not sufficient; often, assistance is needed for verification. 2. Auditory inspection: Use hearing to detect the sound of the mechanism’s operation in order to determine the operating status of the steam trap. (Requires certain professional skills) 3. Tactile inspection: Feel the temperature by hand to check the operating condition of the steam trap. (Requires certain professional skills) 4. Utilize the installed testing equipment in conjunction with visual inspection ； Hearing ； The three tactile detection methods can accurately determine the quality of a check valve.