JPS6449701U

JPS6449701U -

Info

Publication number: JPS6449701U
Application number: JP14021287U
Authority: JP
Priority date: 1987-09-14
Filing date: 1987-09-14
Publication date: 1989-03-28
Also published as: JPH0440004Y2

Description

[Brief explanation of the drawing]

第１図は本考案の空気リレーの実施例を示す縦
断面図、第２図は従来の空気リレーの断面図、第
３図は一次圧力と二次圧力の関係を示すグラフ、
第４図は信号圧力と二次圧力およびバイアス圧力
の関係を示すグラフである。１１……ハウジング、１２……一次圧力導入口
、１３……二次圧力取出口、１４……信号圧力導
入口、１４ａ……大気導入口、１５……調整口、
１７……主弁、２０……制御室、２１……メジヤ
リングカプセル、２２……調整ねじ、２４……パ
イロツト弁、２５……パイロツト圧室、３２……
パイロツトダイアフラム、３３……浮動ピストン
、３４……コントロールダイアフラム、３８……
リリーフ弁、４３……振動防止板、５３……摺動
孔、５４……Ｏリング（摺動抵抗部材）。 Fig. 1 is a longitudinal sectional view showing an embodiment of the air relay of the present invention, Fig. 2 is a sectional view of a conventional air relay, and Fig. 3 is a graph showing the relationship between primary pressure and secondary pressure.
FIG. 4 is a graph showing the relationship between signal pressure, secondary pressure and bias pressure. 11...Housing, 12...Primary pressure inlet, 13...Secondary pressure outlet, 14...Signal pressure inlet, 14a...Atmospheric inlet, 15...Adjustment port,
17... Main valve, 20... Control room, 21... Measuring capsule, 22... Adjusting screw, 24... Pilot valve, 25... Pilot pressure chamber, 32...
Pilot diaphragm, 33...Floating piston, 34...Control diaphragm, 38...
Relief valve, 43... vibration prevention plate, 53... sliding hole, 54... O ring (sliding resistance member).

Claims

[Scope of utility model registration request]

A primary pressure inlet; a secondary pressure outlet; a main valve that opens and closes between the primary pressure inlet and the secondary pressure outlet; moves according to the pressure difference between the secondary pressure outlet and the pilot pressure chamber. , a floating piston having a relief chamber that communicates with the secondary pressure outlet through a communication hole; connected to the main valve through a connecting shaft, and when the floating piston is moving toward the secondary pressure chamber side; It contacts and closes the communication hole of the floating piston,
A relief valve that opens the communication hole when moving toward the pilot pressure chamber; and a pressure regulating mechanism that controls the introduction of pressure from the secondary pressure outlet into the pilot pressure chamber, and the relief valve is pressed by a floating piston. When the main valve is displaced, the connecting shaft connecting the main valve and the relief valve is moved axially through the sliding resistance member in the air relay that communicates between the primary pressure inlet and the secondary pressure outlet. An air relay characterized by being movably supported.