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Pilot relay

A technology of pneumatic amplifiers and air pressure chambers, which is applied to engine components, physical quantity changers, fluid pressure actuators, etc., can solve unsatisfactory problems, reduce dead zones, reduce air consumption in steady state, and accelerate stability Effect

Active Publication Date: 2012-10-17
YAMATAKE HONEYWELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, it is not ideal because it leads to an increase in the size of the air amplifier

Method used

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Embodiment Construction

[0055] Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

[0056] [Embodiment 1: Single-acting type]

[0057] figure 1 It is a figure which shows the structure of one embodiment of the air amplifier concerning this invention. This pneumatic amplifier is single acting. In this figure, 1 is a casing, and the casing 1 is provided with an input air chamber 2 , a supply air chamber 3 , an output air chamber 4 , an exhaust chamber 5 and a bias chamber 6 .

[0058] In this casing 1, the exhaust chamber 5 is adjacent to the output air pressure chamber 4 via the first diaphragm 7-1, and is adjacent to the bias chamber 6 via the second diaphragm 7-2. Also, the input pressure chamber 2 is adjacent to the bias chamber 6 via the third diaphragm 7-3. The first to third diaphragms 7-1 to 7-3 are provided between the casing 1 and the valve plug (moving body) 8, and the valve plug 8 is movable in the A direction and the B direction by the...

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PUM

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Abstract

A pilot relay is capable of increasing the speed of settling of the output air pressure, without increasing the bleed rate. A poppet valve assembly (11) is structured divided into a seat portion (12) and a seat retaining portion (13). A spring (15) is contained within an interior space (14) between the seat portion (12) and the seat retaining portion (13), where a poppet valve (16) is held between the seat portion (12) and the seat retaining portion (13) in a state biased by the spring (15). The poppet valve (16) is provided with a through hole (16c) for connecting a chamber (13b) that contains the spring (15) and a discharge air duct (8b) of a spool (8), and a fine connecting duct (16d) for connecting the through hole (16c) and an output air pressure chamber (4). The chamber (13b) that contains the spring (15) is separated from a supply air pressure chamber (2) by an O-ring (23).

Description

technical field [0001] The present invention relates to a pneumatic amplifier used in a positioner or the like for controlling the opening degree of a pneumatic regulating valve (valve). Background technique [0002] In the past, positioners have been used in valve drive control, process automation, and other general industrial equipment drive control. By attaching the positioner to the valve, it is possible to control the opening of the valve. [0003] Figure 20 The configuration of the main part of the positioner capable of controlling the opening degree of the valve is shown. In this figure, 100 is a positioner, and this positioner 100 has: an electro-pneumatic conversion unit 101 that converts a valve opening degree signal sent as an electrical signal from a host controller 200 into a pneumatic signal Pn, and The air pressure signal (input air pressure) Pn converted by the unit 101 is amplified and output to the air amplifier (pressure signal amplifier) ​​102 of the va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/12
CPCF16K31/1266F15B13/0405F16K31/1268F15B5/006F15B13/0433F16K31/12
Inventor 稻垣洋辅
Owner YAMATAKE HONEYWELL CO LTD
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