Lidering提供了机械密​​封的操作，特征和好处的介绍

机械密封是任何环境中最重要的元素之一，在流体转移时需要最佳密封。

Majority of industrial machinery has equipments such as compressors or pumps. These equipments are prone to leaking fluids that lead to a decrease in efficiency or even to a breakdown.

As experts in mechanical seals and products associated with the industry, Lidering dedicates a large part of its efforts to perfectly understand the behavior of these elements in order to satisfy the most demanding needs of its customers.

The purpose of this introduction is that readers also know the operation and characteristics of mechanical seals.

什么是机械密封？

The broadest definition can be given about a mechanical seal is that of a dynamic sealing element whose function is to seal a leak point between two elements that present a relative speed between them.

A typical case would be a pump where there is a shaft that moves an impeller and the casing or volute of the pump that remains fixed.

As can be seen, there are two elements; a rotating shaft (dynamic) and a fixed structure (static).

The fixed part is housed in the structure of the system and seals statically with an elastomer. The rotating part is mounted on the shaft and also seals statically through an elastomer.

机械密封的另一个组成部分是弹簧。它的功能是补偿系统的小动作和振动，以确保机械密封的两个部分始终保持接触，从而避免可能泄漏。

机械密封的替代方案

机械密封并不是唯一允许密封性的系统。动态密封的其他常见元素是固定器和包装。

Packing as an alternative

A packing is also a dynamic sealing device that generates a pressure force between the packing itself and the rotating parts of equipment.

通过包装，密封永远不会完成；因为它必须是一个小的受控泄漏，以使包装可以润滑且不会受到损坏。

自1950年代大约以来，机械密封件在大多数应用中几乎完全替换了包装。

Types of mechanical seals

The type of mechanical seal varies depending on the application and the environment to which they are exposed.

There are many designs such as multi-spring, rubber bellows, conical spring seals, etc.

They friction faces can be made of different materials such as Carbon, Silicon Carbide, Tungsten, Alumina or Graphite, among others.

执行静态密封函数的弹性体也有不同的材料，例如氮，EPDM，Fluoroelastomer，Perfluoroelastomer等。

可以看出，机械密封有大量组合和变化，有必要知道选择适当解决方案的应用。

It is very important to identify the temperature range, application and environment that the mechanical seal will have to withstand.

正确的密封将防止环境污染并导致节省成本，这要归功于机器运营效率的提高。

机械密封的好处

以下是5 main benefits offered by mechanical seals:

• 减少摩擦和功率损失：Mechanical seal faces remain lubricated and have perfect space between them. This results in less friction which results in less power loss.
• 长期盈利能力：通过保证比其他密封系统优越的密封，流体的损失要低得多。这意味着崩溃的崩溃和废物产生较少。
• 减少维护: When properly aligned, without vibrations and at the right temperature, mechanical seals are extremely durable and easy to repair in case of failure. Moreover, the cost of most mechanical seal’s repairs is relatively low.
• Elimination of excessive wear: A properly installed mechanical seal can help protect users equipment. There are clear guidelines for alignment, impeller positioning and other similar things, which add stability and extend equipment life.
• 泄漏的总减少: Mechanical seals offer a complete sealing, preventing leaks.

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