GB802763A - Improvements relating to fluid-metering devices - Google Patents
Improvements relating to fluid-metering devicesInfo
- Publication number
- GB802763A GB802763A GB2395656A GB2395656A GB802763A GB 802763 A GB802763 A GB 802763A GB 2395656 A GB2395656 A GB 2395656A GB 2395656 A GB2395656 A GB 2395656A GB 802763 A GB802763 A GB 802763A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluid
- pressure
- passage
- bellows
- valve
- 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
- G05D11/00—Control of flow ratio
- G05D11/006—Control of flow ratio involving a first fluid acting on the feeding of a second fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
- F22D5/18—Controlling water feed or water level; Automatic water feeding or water-level regulators for varying the speed or delivery pressure of feed pumps
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
Abstract
802,763. Mixing fluids in flow. MEDOAPPARATEGESELLSCHAFT M.B.H. & CO. Aug. 3, 1956 [Aug. 4, 1955, Dec. 15, 1955], No. 23956/56. Class 86 Apparatus for introducing a fluid contained in a chamber 15 into a fluid flowing under pressure through a pipe 1 in proportions dependent upon the rate of flow of the pressure fluid comprises a rotor 3, driven by the pressure fluid, which actuates a control valve 5 which admits pressure fluid to the interior of a metal bellows 11 disposed in the chamber 15 and a valve 8 which reduces the pressure of the fluid in the pipe 1 so that on the admission of high pressure fluid to the interior of the bellows 11 the latter expands and forces fluid from the space surrounding the bellows through a passage 16 into the pressure fluid flowing through the pipe 1 on the low pressure side of the valve 8. The rotor 3, through step by step intermittent gearing 4, drives the control ring 5 through 180 degrees, thereby closing and opening an aperture 6 leading through a passage 13 to the interior of the bellows 11. Through a compensating passage 14, the connecting passage 13 is in communication with zone 7 of low pressure. On the end face 17 of bellows 11 is mounted a piston 19 slidably received in a bore 20 connecting with a fluid supply conduit 21 having non return valves 22, 23. The conduit 20 leads to a reservoir 24 which contains the fluid to be introduced into the system. The stroke of piston 19 and diaphragm 17 is limited at its upper end by a screw 25 and at its lower end by a pin 26. To give pressure compensation two different bellows 27, 28 are provided. The bellows 28 may contain fluid which indicates, via a passage 29, the functioning of the apparatus in a sight glass 30. A second embodiment comprises pipe section 1<SP>1</SP>, Fig. 2, with rotor 3<SP>1</SP> control ring 5<SP>1</SP> and pressure reducing valve 8<SP>1</SP>. A housing 33 bolted to the pipe section has a sieve plate 34 adapted to support substances to be dissolved in the fluid contained in the housing 33. An expansible pressure chamber 37 is connected to an opening 6<SP>1</SP> through a pipe 36. A set screw 39 limits the stroke of chamber 37. The interior of tube 36 communicates with zone 7<SP>1</SP> through a passage 41. A non return valve is installed in a passage 42. The passage 45 communicates with a riser tube 46 having a valve 47. Through these passages, space 38 is connected with zone 7<SP>1</SP>. A filler neck 48 serves for inserting the chemicals 35. In a further embodiment, shown in Fig. 3, a rotor 3<SP>11</SP> through gearing 4<SP>11</SP> drives the control ring 5<SP>11</SP> located in a chamber 51 which is in communication with a passage 52 leading to a high presure zone 2<SP>11</SP>, with a passage 53 leading to a low pressure zone 7<SP>11</SP> and a passage 54 leading to a pressure chamber 12 which is closed by an elastic membrane 55. The passages 52 and 53 are periodically uncovered and closed by a ring 5<SP>11</SP>, so that higher and lower pressures alternate in the chambers 51 and 12. Depending on the pressure conditions in chambers 51 and 12, the membrane 55 changes its position thereby actuating a control slide valve 56 connected to it. The valve 56 controls the admission of fluid to a chamber 63 formed by a membrane 64 attached to the upper end of a bellows 68. On the upstroke the bellows draws additive fluid from a reservoir 73 and on the downstroke the fluid is supplied through a conduit 71 to the fluid under pressure flowing through the pipe 1<SP>11</SP>.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE345173X | 1955-08-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB802763A true GB802763A (en) | 1958-10-08 |
Family
ID=6719766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2395656A Expired GB802763A (en) | 1955-08-04 | 1956-08-03 | Improvements relating to fluid-metering devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB802763A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1217639B (en) * | 1960-10-03 | 1966-05-26 | Berkefeld Filter Ges | Device for the simultaneous controllable division of a preferably large amount of liquid into two partial flows |
US4058286A (en) * | 1972-10-24 | 1977-11-15 | Benjamin Berger | Valve with delayed action closing means |
-
1956
- 1956-08-03 GB GB2395656A patent/GB802763A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1217639B (en) * | 1960-10-03 | 1966-05-26 | Berkefeld Filter Ges | Device for the simultaneous controllable division of a preferably large amount of liquid into two partial flows |
US4058286A (en) * | 1972-10-24 | 1977-11-15 | Benjamin Berger | Valve with delayed action closing means |
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