| 摘要 |
<p>The disclosure describes a transmembrane pressure regulator comprising an upper housing portion and a lower housing portion separated from each other by a rolling diaphragm. The upper housing portion has an interiorly located cavity which includes an upper chamber, an intermediate chamber, and a lower chamber. Each of the chambers are connected by a separate passageway to the outside of the regulator, the lower chamber being in fluid communication with the intermediate chamber and the intermediate chamber being in fluid communication with the upper chamber. The diaphragm is secured in a diaphragm support comprising a lower part and an upper part, the upper part of the diaphragm support including first and second tapered portions located at opposite ends of a shaft portion. The first tapered portion is adapted to cooperate with a first sealing device in the bottom of the upper chamber so as to form therewith a valve for controlling the flow of fluid between the upper chamber and the intermediate chamber. The second tapered portion is adapted to cooperate with a second sealing device in the top of the lower chamber so as to form therewith a valve for controlling the amount of a fluid flowing between the intermediate chamber and the lower chamber. The lower chamber can bias the diaphragm in the direction toward the lower housing portion. The lower housing portion has an interiorly located cavity connected by a passageway to the outside of the regulator, The cavity in the lower housing portion has located therein a device for adjustably biasing the diaphragm in the direction of the upper housing portion.</p> |
