CN103362878B - Adjustable volume diaphragm-type pulsation absorbs accumulator - Google Patents
Adjustable volume diaphragm-type pulsation absorbs accumulator Download PDFInfo
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- CN103362878B CN103362878B CN201210083418.4A CN201210083418A CN103362878B CN 103362878 B CN103362878 B CN 103362878B CN 201210083418 A CN201210083418 A CN 201210083418A CN 103362878 B CN103362878 B CN 103362878B
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Abstract
The invention discloses a kind of adjustable volume diaphragm-type pulsation and absorb accumulator, namely upper-lower casing is connected by lock bolt, bowl-type barrier film is located between upper-lower casing, spool, hollow valve stem, sleeve is socketed the opening that is positioned at upper shell top and successively respectively by being threaded, valve gap is threaded connection hollow valve stem top, back-up ring and spring are located in the counterbore on hollow valve stem top, piston level to be located in upper shell and to be connected by screw sleeve bottom surface, piston centre is provided with conical surface through hole and is formed with outer ring, hollow valve stem bottom tapered slope isolates valve port, hollow valve stem bottom inner ring and spool outer ring are respectively the tapered slope of coupling and form inflation valve port, bowl-type barrier film, working cavity is formed between upper shell and piston, upper shell, formed between piston and sleeve and regulate cavity.This accumulator according to hydraulic system demand volume adjusted, can change physical property, makes it be operated in the best operating point of absorption pressure pulsation, improves HYDRAULIC CONTROL SYSTEM precision and performance.
Description
Technical field
The present invention relates to a kind of adjustable volume diaphragm-type pulsation and absorb accumulator.
Background technique
Accumulator is widely used in all kinds of hydraulic system, accumulator is a kind of energy savings device in hydropneumatic system, it is in due course the energy conversion in system is that compression energy or potential energy store, when system needs, again compression energy or potential energy changed into hydraulic pressure or air pressure energy and discharge, again mending supply system; When system instantaneous pressure increases, it can absorb this part energy, ensures that whole system pressure is normal.Simultaneously, the liquid that in hydraulic system, oil hydraulic pump is discharged all has larger pulsation, this pulsation can make hydraulic system produce noise and vibration, and destroy the working stability of system, use accumulator effective attenuation system to pulse at hydraulic pump outlet place, make device smooth working, this is particularly important in some precision equipment.And traditional accumulator is constant volume accumulator, accumulator volume is non-adjustable, physical parameter is constant, often can not optimum efficiency be reached as during pressure pulsation absorption plant, accumulator volume too small Absorbing Fluctuation ability is weak, accumulator volume is excessive, can affect the hydraulic system response time, especially particularly evident on the impact of servo hydraulic system, has a strong impact on control accuracy and the performance of servo hydraulic system.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of adjustable volume diaphragm-type pulsation and absorbs accumulator, this accumulator can regulate accumulator swept volume according to hydraulic system demand, change accumulator physical property, make accumulator be operated in the best operating point of absorption pressure pulsation, effectively improve servo hydraulic system control accuracy and performance.
For solving the problems of the technologies described above, adjustable volume diaphragm-type pulsation of the present invention absorbs accumulator and comprises upper shell, lower shell body, piston, bowl-type barrier film, locking nut, spool, hollow valve stem, sleeve, valve gap, sealing gasket, back-up ring and spring, described lower shell body bottom is provided with mount inlet and outer ring, top is provided with outside thread, described bowl-type barrier film is positioned at described lower shell body and top is overlying on described lower shell body end face, described upper shell is located at described lower shell body end face and is twisted in lower shell body outer ring screw threads for fastening lower shell body and bowl-type barrier film by described locking nut, described upper shell open-topped inner ring is provided with screw thread, the inner ring of described upper cartridge and outer ring are respectively equipped with screw thread and the screw thread of twisting in described upper shell top be positioned at described upper shell, to be sealed by seal ring in the middle part of described sleeve and between described upper shell and bottom barrel level is provided with through hole, described hollow valve stem top is provided with step and step both sides are respectively equipped with outside thread, described hollow valve stem top is provided with counterbore, described hollow valve stem is twisted in described sleeve inner ring screw thread by outside thread on the downside of step and is positioned at sleeve, sealed by seal ring between described hollow valve stem and described sleeve, described valve gap inner ring is provided with screw thread and twists in described hollow valve stem top, described sealing gasket is located between described valve gap and hollow valve stem, described spool is positioned at described hollow valve stem, described back-up ring is inserted in described spool top, described spring is inserted in described spool and is positioned at the counterbore bottom surface of counterbore two ends, described hollow valve stem top against described back-up ring and hollow valve stem, described piston level is located in described upper shell and is also sealed by seal ring between the two, described piston is connected by screw described sleeve bottom surface and center is provided with conical surface through hole, described sleeve bottom end is positioned at the end face of described piston, described hollow valve stem bottom is positioned at the central through bore of described piston and outer ring is tapered slope, the conical surface through hole of described piston and the tapered slope of hollow valve stem outer ring are formed isolates valve port, described hollow valve stem bottom inner ring and spool outer ring are respectively the tapered slope of coupling and form inflation valve port, described bowl-type barrier film, working cavity is formed between upper shell and piston, described upper shell, formed between piston and sleeve and regulate cavity.
Further, this accumulator also comprises sealer, and described sealer is coated between described sleeve bottom surface and described piston-top surface.
Technique scheme is have employed because adjustable volume diaphragm-type pulsation of the present invention absorbs accumulator, namely upper shell is connected by lock bolt with lower shell body, bowl-type barrier film is located between upper shell and lower shell body, spool, hollow valve stem, sleeve is socketed the opening that is positioned at upper shell top and successively respectively by being threaded, valve gap is threaded connection hollow valve stem top, back-up ring and spring are located in the counterbore on hollow valve stem top, piston level to be located in upper shell and to be connected by screw sleeve bottom surface, piston centre is provided with conical surface through hole and is formed with outer ring, hollow valve stem bottom tapered slope isolates valve port, hollow valve stem bottom inner ring and spool outer ring are respectively the tapered slope of coupling and form inflation valve port, bowl-type barrier film, working cavity is formed between upper shell and piston, upper shell, formed between piston and sleeve and regulate cavity.This accumulator can regulate accumulator swept volume according to hydraulic system demand, changes accumulator physical property, makes accumulator be operated in the best operating point of absorption pressure pulsation, effectively improves servo hydraulic system control accuracy and performance.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is described in further detail:
Fig. 1 is the structural representation that adjustable volume diaphragm-type pulsation of the present invention absorbs accumulator.
Embodiment
As shown in Figure 1, adjustable volume diaphragm-type pulsation of the present invention absorbs accumulator and comprises upper shell 1, lower shell body 2, piston 3, bowl-type barrier film 4, locking nut 5, spool 8, hollow valve stem 7, sleeve 6, valve gap 9, sealing gasket 91, back-up ring 92 and spring 93, described lower shell body 2 bottom is provided with mount inlet 21 and outer ring, top is provided with outside thread, described bowl-type barrier film 4 is positioned at described lower shell body 2 and top is overlying on described lower shell body 2 end face, described upper shell 1 is located at described lower shell body 2 end face and is twisted in lower shell body 2 outer ring screw threads for fastening lower shell body 2 and bowl-type barrier film 4 by described locking nut 5, described upper shell 1 open-topped inner ring is provided with screw thread, the inner ring on described sleeve 6 top and outer ring are respectively equipped with screw thread and the screw thread of twisting in described upper shell 1 top be positioned at described upper shell 1, to be sealed by seal ring 11 in the middle part of described sleeve 6 and between described upper shell 1 and bottom barrel level is provided with through hole 61, described hollow valve stem 7 top is provided with step 71 and step 71 both sides are respectively equipped with outside thread, described hollow valve stem 7 top is provided with counterbore 72, described hollow valve stem 7 is twisted in described sleeve 6 inner ring screw thread by outside thread on the downside of step 71 and is positioned at sleeve 6, sealed by seal ring 62 between described hollow valve stem 7 and described sleeve 6, described valve gap 9 inner ring is provided with screw thread and twists in described hollow valve stem 7 top, described sealing gasket 91 is located between described valve gap 9 and hollow valve stem 7, described spool 8 is positioned at described hollow valve stem 7, described back-up ring 92 is inserted in described spool 8 top, described spring 93 is inserted in described spool 8 and is positioned at counterbore 72 bottom surface of counterbore 72 two ends, described hollow valve stem 7 top against described back-up ring 92 and hollow valve stem 7, described piston 3 level is located in described upper shell 1 and is also sealed by seal ring 32 between the two, described piston 3 connects described sleeve 6 bottom surface by screw 33 and center is provided with conical surface through hole 31, described sleeve 6 bottom is positioned at the end face of described piston 3, described hollow valve stem 7 bottom is positioned at the central through bore 31 of described piston 3 and outer ring is tapered slope, the conical surface through hole 31 of described piston 3 is formed with the tapered slope of hollow valve stem 7 outer ring isolates valve port 34, described hollow valve stem 7 bottom inner ring and spool 8 outer ring are respectively the tapered slope of coupling and form inflation valve port 35, described bowl-type barrier film 4, working cavity 36 is formed between upper shell 1 and piston 3, described upper shell 1, formed between piston 3 and sleeve 6 and regulate cavity 37.
Further, this accumulator also comprises sealer 36, and described sealer 36 is coated between described sleeve 6 bottom surface and described piston 3 end face.To guarantee the sealing between sleeve bottom surface and piston-top surface.
This accumulator is located in hydraulic system by the mount inlet of lower shell body bottom, during its work, first inflation operation is carried out, shed valve gap, take out sealing gasket, hollow valve stem is regulated to make it moves, now isolate valve port to open, hollow valve stem top access high pressure nitrogen inflator, under pressurized gas effect, the active force that promotion spool overcomes spring moves down, and inflation valve port is opened, pressurized gas enter working cavity, and the gas of working cavity enters adjustment cavity through the through hole of isolation valve port and sleeve simultaneously.After inflation terminates, remove inflator, accumulator moves on internal high-pressure gas and spring action lower valve core, and inflation valve port is closed, and pressurized gas are retained in accumulator.Now return dress valve gap, sealing gasket, complete inflation operation.Then adjustment hollow valve stem moving makes isolation valve port close, and makes working cavity become closed cavity, plays the accumulation of energy effect of accumulator.
According to the needs of hydraulic system, during this accumulator volume adjustment, first regulate hollow valve stem that isolation valve port is opened; Then sleeve is turned, sleeve is moved up and down, thus drives piston to move in upper shell, change the volume of working cavity and adjustment cavity, working cavity and the pressurized gas regulated in cavity are by isolating the through hole UNICOM flowing of valve port and sleeve simultaneously, ensure that the air pressure in two cavitys is consistent.After volume adjustment completes, regulate hollow valve stem that isolation valve port is closed, working cavity becomes closed cavity again, now the swept volume of accumulator, and object parameters changes all, realizes the adjustment of accumulator volume.This accumulator changes the volume of working cavity by piston, working cavity and adjustment cavity UNICOM in adjustment process, after adjustment completes, working cavity is closed with regulating cavity, thus make this accumulator working cavity adjustable volume, avoid the defect of traditional accumulator, improve the response time of hydraulic system, control accuracy and performance.
Claims (2)
1. an adjustable volume diaphragm-type pulsation absorbs accumulator, it is characterized in that: this accumulator comprises upper shell, lower shell body, piston, bowl-type barrier film, locking nut, spool, hollow valve stem, sleeve, valve gap, sealing gasket, back-up ring and spring, described lower shell body bottom is provided with mount inlet and outer ring, top is provided with outside thread, described bowl-type barrier film is positioned at described lower shell body and top is overlying on described lower shell body end face, described upper shell is located at described lower shell body end face and is twisted in lower shell body outer ring screw threads for fastening lower shell body and bowl-type barrier film by described locking nut, described upper shell open-topped inner ring is provided with screw thread, the inner ring of described upper cartridge and outer ring are respectively equipped with screw thread and the screw thread of twisting in described upper shell top be positioned at described upper shell, to be sealed by seal ring in the middle part of described sleeve and between described upper shell and bottom barrel level is provided with through hole, described hollow valve stem top is provided with step and step both sides are respectively equipped with outside thread, described hollow valve stem top is provided with counterbore, described hollow valve stem is twisted in described sleeve inner ring screw thread by outside thread on the downside of step and is positioned at sleeve, sealed by seal ring between described hollow valve stem and described sleeve, described valve gap inner ring is provided with screw thread and twists in described hollow valve stem top, described sealing gasket is located between described valve gap and hollow valve stem, described spool is positioned at described hollow valve stem, described back-up ring is inserted in described spool top, described spring is inserted in described spool and is positioned at the counterbore bottom surface of counterbore two ends, described hollow valve stem top against described back-up ring and hollow valve stem, described piston level is located in described upper shell and is also sealed by seal ring between the two, described piston is connected by screw described sleeve bottom surface and center is provided with conical surface through hole, described sleeve bottom end is positioned at the end face of described piston, described hollow valve stem bottom is positioned at the central through bore of described piston and outer ring is tapered slope, the conical surface through hole of described piston and the tapered slope of hollow valve stem outer ring are formed isolates valve port, described hollow valve stem bottom inner ring and spool outer ring are respectively the tapered slope of coupling and form inflation valve port, described bowl-type barrier film, working cavity is formed between upper shell and piston, described upper shell, formed between piston and sleeve and regulate cavity.
2. adjustable volume diaphragm-type pulsation according to claim 1 absorbs accumulator, and it is characterized in that: this accumulator also comprises sealer, described sealer is coated between described sleeve bottom surface and described piston-top surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210083418.4A CN103362878B (en) | 2012-03-27 | 2012-03-27 | Adjustable volume diaphragm-type pulsation absorbs accumulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210083418.4A CN103362878B (en) | 2012-03-27 | 2012-03-27 | Adjustable volume diaphragm-type pulsation absorbs accumulator |
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| CN103362878A CN103362878A (en) | 2013-10-23 |
| CN103362878B true CN103362878B (en) | 2015-08-12 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889145B (en) * | 2014-12-11 | 2018-11-16 | 西安航天发动机厂 | Minute-pressure responds liquid storage device |
| CN106112415B (en) * | 2016-08-26 | 2018-08-17 | 浙江铂达科技有限公司 | A kind of manufacturing method of diaphragm accumulator |
| CN107559467B (en) * | 2017-08-01 | 2019-02-01 | 哈尔滨工程大学 | A kind of three screw pump fluid pulsation energy storage safety valve |
| CN109956438B (en) * | 2019-04-30 | 2024-05-03 | 华兰生物工程重庆有限公司 | Constant volume and pressure split charging device |
| CN110219838A (en) * | 2019-07-19 | 2019-09-10 | 浙江爱力浦科技股份有限公司 | A kind of novel diaphragm type buffer unit and assemble method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB821697A (en) * | 1956-05-31 | 1959-10-14 | Loewy Eng Co Ltd | Hydraulic accumulator |
| JP2006077908A (en) * | 2004-09-10 | 2006-03-23 | Nok Corp | Piston type accumulator |
| CN200993129Y (en) * | 2006-11-23 | 2007-12-19 | 王祖林 | Diaphragm energy storage with combined casing |
| CN201236850Y (en) * | 2008-06-20 | 2009-05-13 | 刘瑞川 | Septum accumulator |
| CN202597288U (en) * | 2012-03-27 | 2012-12-12 | 上海御能动力科技有限公司 | Volume-adjustable diaphragm type pulsation absorbing energy accumulator |
-
2012
- 2012-03-27 CN CN201210083418.4A patent/CN103362878B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB821697A (en) * | 1956-05-31 | 1959-10-14 | Loewy Eng Co Ltd | Hydraulic accumulator |
| JP2006077908A (en) * | 2004-09-10 | 2006-03-23 | Nok Corp | Piston type accumulator |
| CN200993129Y (en) * | 2006-11-23 | 2007-12-19 | 王祖林 | Diaphragm energy storage with combined casing |
| CN201236850Y (en) * | 2008-06-20 | 2009-05-13 | 刘瑞川 | Septum accumulator |
| CN202597288U (en) * | 2012-03-27 | 2012-12-12 | 上海御能动力科技有限公司 | Volume-adjustable diaphragm type pulsation absorbing energy accumulator |
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