JPS56118592A - Fluid machine controller - Google Patents
Fluid machine controllerInfo
- Publication number
- JPS56118592A JPS56118592A JP2321580A JP2321580A JPS56118592A JP S56118592 A JPS56118592 A JP S56118592A JP 2321580 A JP2321580 A JP 2321580A JP 2321580 A JP2321580 A JP 2321580A JP S56118592 A JPS56118592 A JP S56118592A
- Authority
- JP
- Japan
- Prior art keywords
- fluid machine
- prime mover
- liquid level
- sensed
- transistors
- 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.)
- Pending
Links
Abstract
PURPOSE: To eliminate no-load running of a fluid machine and prevent thereby damage of mechanical seal by providing an automatic stop means which is to stop the prime mover driving the fluid machine when the liquid level in the casing is sensed to be below a certain value.
CONSTITUTION: Electrodes 4, 5 to form a liquid level sensing means A are arranged at a certain determined level L1 in the casing 2, whereby sinking of liquid level below said level L1 is sensed off by transistors Tr1, Tr2 in Darlington connection to the voltage between the two electrodes 4 and 5. The collector circuitry around these transistors will energize a relay coil 24, which works as well for outputting as forms part of an automatic stop means B, to close a contact 25 and stop the prime mover 3. According to this arrangement, the prime mover is stopped immediately when the fluid contained by the machine has sunk below the preset value, so that no-load running of a fluid machine can be eliminated and any trouble resulting therefrom such as damage of mechanical seal can be well prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2321580A JPS56118592A (en) | 1980-02-25 | 1980-02-25 | Fluid machine controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2321580A JPS56118592A (en) | 1980-02-25 | 1980-02-25 | Fluid machine controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56118592A true JPS56118592A (en) | 1981-09-17 |
Family
ID=12104432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2321580A Pending JPS56118592A (en) | 1980-02-25 | 1980-02-25 | Fluid machine controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56118592A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5919945U (en) * | 1982-07-28 | 1984-02-07 | 富士重工業株式会社 | pump with engine |
EP0321295A2 (en) * | 1987-12-18 | 1989-06-21 | Westinghouse Electric Corporation | Automatic pump protection system |
-
1980
- 1980-02-25 JP JP2321580A patent/JPS56118592A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5919945U (en) * | 1982-07-28 | 1984-02-07 | 富士重工業株式会社 | pump with engine |
EP0321295A2 (en) * | 1987-12-18 | 1989-06-21 | Westinghouse Electric Corporation | Automatic pump protection system |
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