SE8703255L - RESPONSE TO CONSTANT A FLOW, PREFERRED TO PRESSURE-INSTALLATIONS - Google Patents
RESPONSE TO CONSTANT A FLOW, PREFERRED TO PRESSURE-INSTALLATIONSInfo
- Publication number
- SE8703255L SE8703255L SE8703255A SE8703255A SE8703255L SE 8703255 L SE8703255 L SE 8703255L SE 8703255 A SE8703255 A SE 8703255A SE 8703255 A SE8703255 A SE 8703255A SE 8703255 L SE8703255 L SE 8703255L
- Authority
- SE
- Sweden
- Prior art keywords
- pressure
- pump
- constant
- installations
- time unit
- Prior art date
Links
Classifications
-
- 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
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Dairy Products (AREA)
Abstract
The invention relates to a device for maintaining a constant supply quantity, preferably for pressure-dependent installations, by means of which device freely selectable throughput quantities per time unit can be set and the pressure changes which occur can be kept constant in a flow installation which is operated with an impeller pump with a specific throughput quantity per time unit, independently of self-induced pressure behaviour. This is achieved in that, in the pipe between the installation and a pump operated by an inductive motor, a pressure-independent quantity meter is arranged, which is electrically connected via a transmitter and a controller to a rotary-current frequency inverter which adjusts the rotational speed of the induction motor by changing the frequency as a function of the quantity delivered by the pump.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD29421686A DD252642A1 (en) | 1986-09-08 | 1986-09-08 | DEVICE FOR CONSTANTING A SUPPLY QUANTITY, PREFERABLY FOR PRESSURE-RELATED EQUIPMENT |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8703255D0 SE8703255D0 (en) | 1987-08-21 |
SE8703255L true SE8703255L (en) | 1988-03-09 |
Family
ID=5582286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8703255A SE8703255L (en) | 1986-09-08 | 1987-08-21 | RESPONSE TO CONSTANT A FLOW, PREFERRED TO PRESSURE-INSTALLATIONS |
Country Status (4)
Country | Link |
---|---|
DD (1) | DD252642A1 (en) |
DE (1) | DE3726630A1 (en) |
DK (1) | DK423787A (en) |
SE (1) | SE8703255L (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9296009B2 (en) * | 2012-07-13 | 2016-03-29 | Nordson Corporation | Adhesive dispensing system having metering system including variable frequency drive and closed-loop feedback control |
-
1986
- 1986-09-08 DD DD29421686A patent/DD252642A1/en not_active IP Right Cessation
-
1987
- 1987-08-11 DE DE19873726630 patent/DE3726630A1/en not_active Withdrawn
- 1987-08-13 DK DK423787A patent/DK423787A/en not_active Application Discontinuation
- 1987-08-21 SE SE8703255A patent/SE8703255L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DK423787D0 (en) | 1987-08-13 |
DK423787A (en) | 1988-03-09 |
SE8703255D0 (en) | 1987-08-21 |
DE3726630A1 (en) | 1988-03-17 |
DD252642A1 (en) | 1987-12-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 8703255-3 Effective date: 19920413 |