GB1393339A - Compressor unloader and check valve unit - Google Patents
Compressor unloader and check valve unitInfo
- Publication number
- GB1393339A GB1393339A GB5419273A GB5419273A GB1393339A GB 1393339 A GB1393339 A GB 1393339A GB 5419273 A GB5419273 A GB 5419273A GB 5419273 A GB5419273 A GB 5419273A GB 1393339 A GB1393339 A GB 1393339A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- outlet
- pressure
- compressor
- rod
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
- F04B49/03—Stopping, starting, unloading or idling control by means of valves
- F04B49/035—Bypassing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
1393339 Controlling compressors J L KRECHEL 22 Nov 1973 54192/73 Heading F1N [ Also in Divisions F2 and G3] An unloader valve for a compressor an inlet 5 connected to the compressor outlet, or outlet 7 to an accumulator or fluid pressure operated device and an exhaust post 9, a check valve 63 between the inlet and outlet and a valve 15 between the inlet and exhaust sensitive to pressure at the outlet 7. This pressure, fed via a ball valve 39, acts on a piston 21 connected with the valve 15 to open the valve when the pressure has risen to a pre-set level sufficient to lift the ball valve against the adjustable loading provided by a helical spring 59 which operates through a rod 42. The outer end of the rod has a ring 61 for manned operation. A pivoted locking member 69 can be placed in one of three positions to operate the valve in one of three modes. The locking member may engage the underside of the ring 61, after manual withdrawal of the rod 42, to remove the loading from the ball valve 39 which will open under the influence of pressure at the outlet 7 to operate the piston 21 and valve 15 to unload the compressor. If the locking member engages the inside of the ring the ball valve will be locked thus disabling the valve 15 which will remain closed, any pressure in the cylinder 29 leaking away to atmosphere between the rod 42 and the member 47. In the third mode the locking member is pivoted out of engagement with the ring so that the ball valve opens to unload the compressor only when the predetermined pressure is reached at the outlet 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5419273A GB1393339A (en) | 1973-11-22 | 1973-11-22 | Compressor unloader and check valve unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5419273A GB1393339A (en) | 1973-11-22 | 1973-11-22 | Compressor unloader and check valve unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1393339A true GB1393339A (en) | 1975-05-07 |
Family
ID=10470219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5419273A Expired GB1393339A (en) | 1973-11-22 | 1973-11-22 | Compressor unloader and check valve unit |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1393339A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2403511A1 (en) * | 1977-09-15 | 1979-04-13 | Craf | decompression valve for lubrication circuit - has ball with biased sleeve maintaining pressure in circuit when lubrication pump is not operating |
| CN104153741A (en) * | 2014-08-26 | 2014-11-19 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Control valve system for external casing packer |
| CN109630729A (en) * | 2019-01-18 | 2019-04-16 | 菲时特集团股份有限公司 | A kind of permanent flow valve |
-
1973
- 1973-11-22 GB GB5419273A patent/GB1393339A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2403511A1 (en) * | 1977-09-15 | 1979-04-13 | Craf | decompression valve for lubrication circuit - has ball with biased sleeve maintaining pressure in circuit when lubrication pump is not operating |
| CN104153741A (en) * | 2014-08-26 | 2014-11-19 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Control valve system for external casing packer |
| CN109630729A (en) * | 2019-01-18 | 2019-04-16 | 菲时特集团股份有限公司 | A kind of permanent flow valve |
| CN109630729B (en) * | 2019-01-18 | 2024-04-02 | 菲时特集团股份有限公司 | Constant flow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |