GB895905A - Pneumatic control apparatus - Google Patents
Pneumatic control apparatusInfo
- 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
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.
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)
| 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 |
-
1958
- 1958-11-05 GB GB35576/58A patent/GB895905A/en not_active Expired
Cited By (2)
| 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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