注意：以下中文文章是摘自ControlAir英文网站文章，使用谷歌在线词典直接翻译，没有经过任何的人工修改和审核，如果有需要查看精准的内容，请访问ControlAir英文官方网站上的英文原文，链接如下：
https://www.controlair.com/blog/what-is-a-volume-booster/

或联系ControlAir中国办事处（康气通）获取更多内容，联系邮箱：tom@controlair.com 或电话：18611155599

简而言之，康气通容积增压器是一种压力调节装置，由先导压力而不是如空气压力调节器中的弹簧或调节螺纹来控制。音量增强器也可以称为“先导式调节器”。调节器中的弹簧通常会提供打开供给阀所需的机械压力，直到输出压力和弹簧力之间达到相等的力平衡为止。在容积增压器中，不是通过弹簧来提供力平衡，而是通过作用在膜片上的先导压力来提供“弹簧力”。康气通容积增压器回路有四个基本空气成分：
•供气压力
•调节压力或下游压力
•信号（先导）压力
•大气（排气）

信号或先导压力可以由调节器，I / P传感器，阀门定位器或任何其他压力调节设备提供。
容积增压器的主要目的是在给定先导压力下向下游输送大量空气。输出压力可以通过先导压力进行调节。音量增强器通常用于以下应用程序：
•加快大容量执行机构的行程。
•气动，远程压力调节。
•危险环境中，不希望使用电信号。
容积增压器的一些常见选项包括增加一个旁通阀（旁通针阀），该阀可用于调节动态响应，以在各种应用中提供稳定的操作。另一种选择是增加可调节的偏置，以使输出压力偏离信号压力。虽然，这通常在体积较小的音量增强器中发现，有时也称为空气继电器。这可能是正面或负面的偏见。其他选择可能包括用于苛刻和低温环境的特殊隔膜材料。
如果您对系统中使用音量增强器有任何疑问，请联系我们的技术支持团队。

联系ControlAir（康气通）中国办事处获取更多内容，联系邮箱：tom@controlair.com 或电话：18611155599

In short, a volume booster is a pressure regulation device that is controlled by a pilot pressure instead of a spring or adjustment thread as in an air pressure regulator. A volume booster may also be called a “pilot operated regulator”.  The spring in a regulator normally supplies the mechanical pressure required to open the supply valve until there is an equal force balance between output pressure and spring force.  In a volume booster, instead of a spring providing force balance, the “spring force” is supplied by a pilot pressure acting on a diaphragm. There are four basic air components to a volume booster circuit:
•      Supply Pressure
•      Regulated or downstream pressure
•      Signal (pilot) Pressure
•      Atmosphere (exhaust)

The signal or pilot pressure can be supplied by a regulator, I/P transducer, valve positioner or any other pressure modulating device.
The main purpose of a volume booster is to deliver a large volume of air downstream at a given pilot pressure.  The output pressure can be modulated by the pilot pressure.   Volume boosters are generally used in the following applications:
•      To speed the stroke of larger volume actuators.
•      Air operated, remote pressure regulation.
•      Hazardous environments where electric signals are not desirable.
Some common options for a volume booster include the addition of a bypass valve (bypass needle valve) which can be used to adjust the dynamic response to provide stable operation over a wide variety of applications.  Another option could be the addition of an adjustable bias to skew the output pressure from the signal pressure. Although, this is generally found in smaller versions of a volume booster, sometimes referred to as an air relay.  This could be a positive or negative bias. Other options could include special diaphragm materials for caustic and low temperature environments.
Please contact our technical support team for any questions regarding the use of a volume booster in your system.