GB895905A - Pneumatic control apparatus - Google Patents

Pneumatic control apparatus

Info

Publication number
GB895905A
GB895905A GB35576/58A GB3557658A GB895905A GB 895905 A GB895905 A GB 895905A GB 35576/58 A GB35576/58 A GB 35576/58A GB 3557658 A GB3557658 A GB 3557658A GB 895905 A GB895905 A GB 895905A
Authority
GB
United Kingdom
Prior art keywords
valve
thermostat
chamber
inlet
control pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB35576/58A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Garrett Corp
Original Assignee
Garrett Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Garrett Corp filed Critical Garrett Corp
Publication of GB895905A publication Critical patent/GB895905A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/185—Control of temperature with auxiliary non-electric power
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/44—Automatic controllers pneumatic only
    • G05B11/48—Automatic controllers pneumatic only with auxiliary power
    • G05B11/50—Automatic controllers pneumatic only with auxiliary power in which the output signal represents a continuous function of the deviation from the desired value, i.e. continuous controllers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

895,905. Fluid-pressure servomotor-control systems. GARRETT CORPORATION. Nov. 5, 1958 [Nov. 6, 1957], No. 35576/58. Class 135. Pneumatic control apparatus includes a pneumatic control pressure chamber 28 having a pressure-responsive wall 26 movable against a resilient force, inlet and outlet passages of which one, e.g. the inlet, is provided with a restricted orifice 31 whilst the other is controlled by a valve comprising two co-operating movable flow-controlling elements such as a valve member 26, connected to a thermostat 15, 16 and a valve seat 24, connected to the movable wall 26, so that the apparatus acts to maintain a control pressure in the chamber determined by the thermostat. As shown, the thermostat 15, 16 is positioned in a conduit 10 and the control pressure actuates a valve 14 controlling the flow of a medium in this conduit in accordance with its temperature. In an alternative embodiment, the inlet to the control pressure chamber is controlled by a valve comprising a piston-type closure member carried by the thermostat, which co-operates with a ported hollow sleeve carried by two spaced diaphragms of which one encloses the chamber.
GB35576/58A 1957-11-06 1958-11-05 Pneumatic control apparatus Expired GB895905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US895905XA 1957-11-06 1957-11-06

Publications (1)

Publication Number Publication Date
GB895905A true GB895905A (en) 1962-05-09

Family

ID=22218483

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35576/58A Expired GB895905A (en) 1957-11-06 1958-11-05 Pneumatic control apparatus

Country Status (1)

Country Link
GB (1) GB895905A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113250222A (en) * 2021-05-31 2021-08-13 中铁十八局集团有限公司 Intelligent pneumatic dewatering device for subway station foundation pit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113250222A (en) * 2021-05-31 2021-08-13 中铁十八局集团有限公司 Intelligent pneumatic dewatering device for subway station foundation pit
CN113250222B (en) * 2021-05-31 2023-02-28 中铁十八局集团有限公司 Intelligent pneumatic dewatering device for subway station foundation pit

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