JPS61160512U

JPS61160512U -

Info

Publication number: JPS61160512U
Application number: JP4121585U
Authority: JP
Priority date: 1985-03-22
Filing date: 1985-03-22
Publication date: 1986-10-04

Description

[Brief explanation of the drawing]

第１図は本考案に係るベロフラム付直動型ガバ
ナの一部切欠正面図、第２図は従来のベロフラム
付直動型ガバナの断面図、第３図は従来のガバナ
の流量に対する二次圧とロツクアツプ量を示すグ
ラフである。１……ガス流路、２……弁シート、３……調整
弁、４……ダイヤフラム本体、５……ダイヤフラ
ム、６……調整スプリング、７……検出ライン、
８……ダイヤフラム室、９……弁軸、１０……ベ
ロフラム、１１……背圧導入孔、１２……導圧室
、１３……入口、１４……出口、１５……鞘管、
１６……開口部。 Fig. 1 is a partially cutaway front view of a direct-acting governor with bellow ram according to the present invention, Fig. 2 is a sectional view of a conventional direct-acting governor with bellow ram, and Fig. 3 is a secondary pressure versus flow rate of a conventional governor. This is a graph showing the amount of lockup. 1... Gas flow path, 2... Valve seat, 3... Adjustment valve, 4... Diaphragm body, 5... Diaphragm, 6... Adjustment spring, 7... Detection line,
8...Diaphragm chamber, 9...Valve stem, 10...Bellophram, 11...Back pressure introduction hole, 12...Pressure chamber, 13...Inlet, 14...Outlet, 15...Sheath pipe,
16...Opening.

Claims

[Scope of utility model registration request]

A diaphragm that forms a valve seat in the flow path between the primary pressure and the secondary pressure, and is provided with an adjustment valve that can come into close contact with and separate from the valve seat from the secondary pressure side, and operates with a balance between the secondary pressure and the adjustment spring pressure. and the regulating valve are connected by a valve stem, and a bellofram is installed in the middle of the valve stem, and a secondary pressure introduction is provided in a pressure chamber which is separated from the primary pressure side by this bellofram and is opened into the valve stem. In a direct-acting governor with a bellows ram configured to reduce the back pressure applied to the regulating valve by introducing secondary pressure through a hole through the action of the bellows ram, the area of the opening surrounded by the valve seat is A direct-acting governor with a velofram that is set smaller than the pressure receiving area (effective area) of the primary pressure that the velofram receives.