How to roughly determine the pump’s sealing type based on its inlet and outlet pressures, temperature, and medium properties
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I’ve always been confused about how to choose pump seals and don’t understand it well. I would appreciate some guidance on how to make this choice. O(∩_∩)O Thank you!
Inferring the pump’s sealing type based on its inlet and outlet pressures, temperature, and fluid properties – what is the significance of such inference? Or for what purpose? Generally, for high-temperature media, dual sealing is used; when the medium contains a high amount of solids, dual sealing is also employed. It would be better to have specific operational case studies to directly select the appropriate sealing type. For example: high-temperature hydrochloric acid, with an operating temperature of 130°C and 20% particulate impurities – what type of sealing should be used?
Agree with the opinion above. For high-temperature media, it is safer to use a double-end face seal.
Any type of packing can be used for clean water pumps. In the petrochemical industry, modular mechanical seals are generally used; the requirements for sealing performance are not high, and for cost reasons, non-modular mechanical seals can also be chosen； Given the harsh medium conditions, a double-ended design is recommended; in most cases, a single-ended design is sufficient
It’s actually just that I can’t understand API 682. . The pump documentation provided by the manufacturers includes information indicating whether the seal type is 53A, 61, 63, or some other type. Some seals do not require nitrogen, while others need nitrogen under reduced pressure, or high-pressure nitrogen can be used directly, and so on. What I mainly want to understand is based on what principles the manufacturers choose which seal type to use. Please give me some guidance. Thank you
The supplier selects the appropriate components based on the operating conditions specified by the buyer; the key factors are the properties of the medium: its name, composition, density, temperature, and the operating environment, among others
What temperature does \"high temperature\" refer to as being above? 80?
That’s the question I would like to ask. . Could you help explain what occasions each plan is suitable for?
https://mp.wei*n.qq.com/s?src=11×tamp=1524124718&ver=825&signature=3OH3DlBCFlAPv-7B7rysy5vDnGQ8WXWdLM4KXWnkZWIxQ9T8t2KPSyMQgqLZGfnscbE2vUxpkLvXUemNNDqu85yZLKNZPrRzjSCvBXhKr-wUm5oLffe276WPd65W8TA7&new=1 This article should be able to provide the answer
The selection of mechanical seals is related to factors such as the temperature, pressure, saturated vapor pressure of the medium, its composition, and pH level. These factors determine whether the user should opt for a single-face seal or a double-face seal, or whether a series arrangement or back-to-back arrangement of seals is appropriate. Therefore, in choosing a seal, our role is to clarify the characteristics of the medium and the process conditions, so that a professional manufacturer can select the most suitable seal type for the given situation.
Thank you so much, it was a great introduction. I’ll think about it and take a look