GB824365A - Improvements in pulsation dampening or surge absorbing apparatus - Google Patents
Improvements in pulsation dampening or surge absorbing apparatusInfo
- Publication number
- GB824365A GB824365A GB35844/56A GB3584456A GB824365A GB 824365 A GB824365 A GB 824365A GB 35844/56 A GB35844/56 A GB 35844/56A GB 3584456 A GB3584456 A GB 3584456A GB 824365 A GB824365 A GB 824365A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sleeve
- mandrel
- orifices
- pressure
- lobes
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
- F16L55/05—Buffers therefor
- F16L55/052—Pneumatic reservoirs
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
- F16L55/05—Buffers therefor
- F16L55/052—Pneumatic reservoirs
- F16L55/053—Pneumatic reservoirs the gas in the reservoir being separated from the fluid in the pipe
- F16L55/054—Pneumatic reservoirs the gas in the reservoir being separated from the fluid in the pipe the reservoir being placed in or around the pipe from which it is separated by a sleeve-shaped membrane
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
824,365. Pressure-relieving devices for fluids. WESTINGHOUSE AIR BRAKE CO. Nov. 23, 1956 [Nov. 25, 1955 (2); Dec. 29, 1955; Jan. 30, 1956; Jan. 31, 1956 ; Feb. 27, 1956; March 27, 1956], No. 35844/56. Class 135. A pulsation dampening or surge absorbing apparatus for installation in a conduit conducting fluid comprises a hollow mandrel having a plurality of throttling orifices in its wall and surrounded by an elastic sleeve defining a space between itself and the mandrel, the mandrel or the sleeve being provided with spaced projections disposed within said space and affording a support for the sections of the sleeve intermediate the projections and resilient means being provided externally of the sleeve to restrain radial distention thereof. The cylindrical mandrel 11, Fig. 1, is fitted by screwthreaded ends 6, 7 to a pipe line carrying fluid under pressure. The mandrel 11 has longitudinal rows of orifices 25, 26, 27, 28 and longitudinal lobes 21, 22, 23, 24, Fig. 2. Surrounding the mandrel and abutting the lobes is an elastic sleeve 18 and spaced from the sleeve is a cylindrical casing 10. The outer flanges 19, 20 of the sleeve 18 are clamped between end plates 12, 13 and flanges 47, 48 of the casing 10. A valve 37 may be operated to introduce compressed air into the space 31 and a gauge 34 indicates the pressure of such air which pressure is selected in accordance with the expected value of the pulsations in the pipe line to which the apparatus is attached. The pulsating fluid flows out through the orifices 25, 26, 27, 28 to radially expand the sleeve 18 and during the pressure reduction which follows a surge the air pressure on the sleeve 18 forces it inwardly against the surface of the mandrel. In a second example, Figs. 3 and 4, the mandrel 11 has three longitudinal lobes and is located by pins 66, 67 between the end plates 12, 13 which have threaded bores 70, 71. The compressed air is introduced by the bore 64 to force the sleeve away from the casing wall, grooves 77 being provided to facilitate this movement. The bolts 76 hold the assembly together. In another example, Fig. 5, the lobes are formed by rods 80 of semi-circular cross-section spot-welded to the mandrel 11. The orifices 84 in the mandrel open into annular grooves 85. The casing 10 is formed by a central section 86 and two end sections 87, 88 welded thereto. Cupshaped members 82, 83 which locate the rods 80 are held in the flanges 12, 13. In another similar example, Fig. 9, the rods 93 are of arcuate cross-section and they are aligned with the orifices 84 and are provided with slots 94. In another example, Fig. 12, the mandrel 11 is tubular and the sleeve 18 has inwardly projecting ribs 140, 141, 142, 143 which abut the mandrel between the orifices 112, 113, 114, 115. The tops of the ribs may be curved or, as shown, flat. The sleeve 18 may be longitudinally corrugated, Fig. 19. In another example, Fig. 14, the sleeve 18 is annularly corrugated, the inner ribs resting on the mandrel 11. The sleeve may comprise two separate sleeves, Fig. 17, the inner one of a material having a high resistance to chemical action by the fluid and the outer one of a material having a high elasticity and strength. A lubricant, e.g. graphite, or a reinforcing sleeve, e.g. of nylon, may be interposed between the two sleeves.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US824365XA | 1955-12-29 | 1955-12-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB824365A true GB824365A (en) | 1959-11-25 |
Family
ID=22171210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35844/56A Expired GB824365A (en) | 1955-12-29 | 1956-11-23 | Improvements in pulsation dampening or surge absorbing apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB824365A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3387630A (en) * | 1965-04-22 | 1968-06-11 | Dow Chemical Co | Adjustable pressure reducing device |
US4191358A (en) * | 1977-04-15 | 1980-03-04 | Luwa Ag | Shutoff device |
US4234885A (en) * | 1979-09-10 | 1980-11-18 | A. B. Dick Company | Remote ink valve |
DE3210239A1 (en) * | 1982-03-20 | 1983-10-06 | Heinz M Naegel | Air vessel for compensating flow rate fluctuations in pressure lines of pumps and the like |
GB2198478A (en) * | 1986-12-08 | 1988-06-15 | Hypro Corp | Surge suppressor |
US4785841A (en) * | 1988-04-05 | 1988-11-22 | Innovac Technology Inc. | Bladder valve |
GB2234015A (en) * | 1986-12-08 | 1991-01-23 | Hypro Corp | Surge suppressor |
WO2017062396A1 (en) * | 2015-10-08 | 2017-04-13 | Shell Oil Company | Shock mitigation devices |
CN110319303A (en) * | 2019-07-15 | 2019-10-11 | 郑州工程技术学院 | The composite pressure pipe of hydraulic pressure frequent fluctuation impact force can be reduced |
US11248731B2 (en) * | 2017-10-19 | 2022-02-15 | Khs Gmbh | Device and method for aseptic pressure relief |
-
1956
- 1956-11-23 GB GB35844/56A patent/GB824365A/en not_active Expired
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3387630A (en) * | 1965-04-22 | 1968-06-11 | Dow Chemical Co | Adjustable pressure reducing device |
US4191358A (en) * | 1977-04-15 | 1980-03-04 | Luwa Ag | Shutoff device |
US4234885A (en) * | 1979-09-10 | 1980-11-18 | A. B. Dick Company | Remote ink valve |
FR2464754A1 (en) * | 1979-09-10 | 1981-03-20 | Dick Co Ab | VALVE CONTROL SYSTEM FOR THE FLOW OF A PRESSURIZED LIQUID TO A HEAD, IN PARTICULAR AN INK JET PRINTING |
DE3210239A1 (en) * | 1982-03-20 | 1983-10-06 | Heinz M Naegel | Air vessel for compensating flow rate fluctuations in pressure lines of pumps and the like |
GB2234015B (en) * | 1986-12-08 | 1991-05-22 | Hypro Corp | Surge suppressor |
GB2234015A (en) * | 1986-12-08 | 1991-01-23 | Hypro Corp | Surge suppressor |
GB2198478B (en) * | 1986-12-08 | 1991-05-01 | Hypro Corp | Surge suppressor |
GB2198478A (en) * | 1986-12-08 | 1988-06-15 | Hypro Corp | Surge suppressor |
US4785841A (en) * | 1988-04-05 | 1988-11-22 | Innovac Technology Inc. | Bladder valve |
WO2017062396A1 (en) * | 2015-10-08 | 2017-04-13 | Shell Oil Company | Shock mitigation devices |
US11248731B2 (en) * | 2017-10-19 | 2022-02-15 | Khs Gmbh | Device and method for aseptic pressure relief |
CN110319303A (en) * | 2019-07-15 | 2019-10-11 | 郑州工程技术学院 | The composite pressure pipe of hydraulic pressure frequent fluctuation impact force can be reduced |
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