GB653533A - Improvements in or relating to a constant weight fluid control apparatus - Google Patents
Improvements in or relating to a constant weight fluid control apparatusInfo
- Publication number
- GB653533A GB653533A GB4461/48A GB446148A GB653533A GB 653533 A GB653533 A GB 653533A GB 4461/48 A GB4461/48 A GB 4461/48A GB 446148 A GB446148 A GB 446148A GB 653533 A GB653533 A GB 653533A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- contacts
- duct
- fluid
- departure
- 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
- 239000012530 fluid Substances 0.000 title abstract 6
- 230000003534 oscillatory effect Effects 0.000 abstract 2
- 230000010355 oscillation Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000002441 reversible effect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space
- B64D13/02—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being pressurised
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space
- B64D13/02—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being pressurised
- B64D13/04—Automatic control of pressure
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Measuring Volume Flow (AREA)
Abstract
653,533. Automatic mass flow control systems. GARRETT CORPORATION. Feb. 16, 1948, No. 4461. Convention date, Sept. 3, 1946. [Class 38 (iv)] A constant weight fluid flow control device comprises a valve 15 for regulating the rate of fluid flow through a duct 5, and is responsive to both variations in fluid pressure differential on either side of an orifice 8 in the duct and variations in fluid density in the duct to maintain the weight flow constant. As shown, a diaphragm 27 is acted upon by the pressure on either side of the orifice 8, through tubes 36, 37. A rod 66 is rigidly connected to the diaphragm at 67 so that by means of a lever 64 pivoted at 65, and bell-crank lever 59, an arm 56 carrying contact 57 is positioned between oscillatory contacts 41, 42 on resilient arms 39, 40. The contacts 41, 42 are oscillated in unison by means of a cam 45 operated continuously by a motor 50. A density-responsive bellows 35 in the relatively low-pressure part of the duct also positions arm 56 through lever 70, pivoted at 71, rod 66, and levers 64, 59 so that arm 56 is positioned according to the variations in the pressure differential on either side of the orifice 8 and variation in fluid density. A tension spring 62 serves to regulate the amount of movement of arm 56. For a predetermined value of weight flow the arm 56 is positioned so that contact 57 will not make contact with oscillatory contacts 41, 42, but upon a departure from the predetermined value owing to the action of the diaphragm and bellows it will be moved to a position such that for each oscillation of the contacts 41, 42 one of these will make contact with 57 for a time depending on the extent of departure. Closure of contacts 41, 57 or 42, 57 closes a circuit to one field winding or the other of a reversible motor 20, operating through gears 17, 18 the valve 15 in a sense to correct for the departure of the weight flow from the predetermined value. Limit switches 80, 81 are provided.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US653533XA | 1946-09-03 | 1946-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB653533A true GB653533A (en) | 1951-05-16 |
Family
ID=22062126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4461/48A Expired GB653533A (en) | 1946-09-03 | 1948-02-16 | Improvements in or relating to a constant weight fluid control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB653533A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0540589A4 (en) * | 1990-07-09 | 1993-03-24 | Keystone Internat Holdings Cor | Measuring and regulating valve. |
| US5400819A (en) * | 1990-07-09 | 1995-03-28 | Keystone International Holdings Corp. | Measuring and regulating valve |
-
1948
- 1948-02-16 GB GB4461/48A patent/GB653533A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0540589A4 (en) * | 1990-07-09 | 1993-03-24 | Keystone Internat Holdings Cor | Measuring and regulating valve. |
| EP0540589A1 (en) * | 1990-07-09 | 1993-05-12 | Keystone International Holdings Corp. | Measuring and regulating valve |
| US5400819A (en) * | 1990-07-09 | 1995-03-28 | Keystone International Holdings Corp. | Measuring and regulating valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2357878A (en) | Pressure control device | |
| US2409871A (en) | Air control instrument | |
| US2529875A (en) | Control system with remote set point adjustment and with remote indication | |
| US2638874A (en) | Pneumatically-operated control instrument with follow-up | |
| US2320508A (en) | Stabilizer for controllers or regulators | |
| US2588799A (en) | Manual transfer between automatic and manual regulating controllers | |
| GB783169A (en) | Pressure fluid operated balanced control system | |
| US2516333A (en) | Pneumatic control apparatus | |
| US2851047A (en) | Controller | |
| GB653533A (en) | Improvements in or relating to a constant weight fluid control apparatus | |
| US2862162A (en) | Force rebalancing servosystem | |
| US2543120A (en) | Stabilizer for pneumatic controls | |
| US2325103A (en) | Fluid-pressure-actuated regulating system | |
| US2611234A (en) | Control for engines employing a pressure fluid medium | |
| US2517081A (en) | Control system with automatic response adjustment | |
| US1650889A (en) | System of regulation | |
| US2484000A (en) | Proportional control system | |
| US3151810A (en) | Automatic valve poitioner | |
| US2303890A (en) | Control instrument | |
| US2274741A (en) | Control apparatus | |
| US2220974A (en) | Air controlling instrument | |
| US2159971A (en) | Control apparatus | |
| US2140747A (en) | Temperature or pressure control by flow regulation | |
| US2701577A (en) | Automatic transfer between automatic and manual regulating controllers | |
| GB733575A (en) | Improvements in fluid-pressure control mechanisms |