CN103362878A - Capacity-adjustable diaphragm-type pulsation absorbing energy accumulator - Google Patents
Capacity-adjustable diaphragm-type pulsation absorbing energy accumulator Download PDFInfo
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- CN103362878A CN103362878A CN2012100834184A CN201210083418A CN103362878A CN 103362878 A CN103362878 A CN 103362878A CN 2012100834184 A CN2012100834184 A CN 2012100834184A CN 201210083418 A CN201210083418 A CN 201210083418A CN 103362878 A CN103362878 A CN 103362878A
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Abstract
The invention discloses a capacity-adjustable diaphragm-type pulsation absorbing energy accumulator. An upper shell and a lower shell are connected through a locking bolt, a U-shaped diaphragm is arranged between the upper shell and the lower shell, a valve spool, a hollow valve stem and a sleeve are sleeved in an opening in the top end of the upper shell in sequence and connected with one another in a threaded manner, a bonnet is connected with the top end of the hollow valve stem through a thread, a check ring and a spring are arranged in a counterbore in the top end of the hollow valve stem, a piston is horizontally arranged in the upper shell and connected with the bottom face of the sleeve through a screw, a conical-surface through hole is formed in the center of the piston and forms an isolation valve port with a conical slope of an outer ring at the bottom end of the hollow valve stem, an inner ring of the bottom end of the hollow valve stem and an outer ring of the valve spool are matched conical slopes respectively and form an aeration valve port, a working cavity is formed among the U-shaped diaphragm, the upper shell and the piston, and an adjusting cavity is formed among the upper shell, the piston and the sleeve. According to requirements of a hydraulic system, capacity of the energy accumulator can be adjusted and physical properties of the energy accumulator are changed enable the energy accumulator to be operated at an optimal operating point for absorbing pressure pulsation, and control accuracy and performance of the hydraulic system are improved.
Description
Technical field
The present invention relates to a kind of volume adjustable diaphragm formula pulsation and absorb accumulator.
Background technique
Accumulator is widely used in all kinds of hydraulic systems, accumulator is a kind of energy savings device in the hydropneumatic system, it is in due course and changes the energy in the system into compression energy or potential energy stores, when system needs, compression energy or potential energy are changed into hydraulic pressure or air pressure energy again and discharge, again mend supply system; When system's instantaneous pressure increased, it can absorb the energy of this part, guaranteed that whole system pressure is normal.Simultaneously, the liquid that oil hydraulic pump is discharged in the hydraulic system all has larger pulsation, this pulsation can make hydraulic system produce noise and vibration, and the working stability of the system of destruction, use accumulator the effective attenuation system to pulse in the oil hydraulic pump outlet port, make the device smooth working, this is particularly important in some precision equipment.And traditional accumulator is the constant volume accumulator, the accumulator volume is non-adjustable, physical parameter is constant, as the pressure pulsation absorption plant time, often can not reach optimum efficiency, a little less than the too small Absorbing Fluctuation ability of accumulator volume, the accumulator volume is excessive then can to 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 provides a kind of volume adjustable diaphragm formula pulsation and absorbs accumulator, this accumulator can be regulated the accumulator swept volume according to the hydraulic system demand, change the accumulator physical property, make accumulator be operated in the best operating point of absorption pressure pulsation, Effective Raise servo hydraulic system control accuracy and performance.
For solving the problems of the technologies described above, volume adjustable diaphragm formula pulsation of the present invention absorbs accumulator and comprises upper shell, lower shell body, piston, the 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 the outer ring, top is provided with outside thread, described bowl-type barrier film is positioned at described lower shell body and the 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 and inner ring are provided with screw thread, the inner ring of described upper cartridge and outer ring are respectively equipped with screw thread and twist in the screw thread on described upper shell top and be positioned at described upper shell, be provided with through hole by seal ring sealing and bottom barrel level between described sleeve middle part and the described upper shell, described hollow valve stem top is provided with step and the 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 step downside outside thread and is positioned at sleeve, seal by seal ring between described hollow valve stem and the 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 the 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 counterbore two ends, described hollow valve stem top against the counterbore bottom surface of described back-up ring and hollow valve stem, described piston level is located in the described upper shell and is sealed by seal ring between the two, described piston is connected by screw described sleeve bottom surface and the center is provided with conical surface through hole, described sleeve bottom is positioned at the end face of described piston, central through bore and outer ring that described hollow valve stem bottom is positioned at described piston are tapered slope, the conical surface through hole of described piston and the tapered slope of hollow valve stem outer ring form the isolation valve port, described hollow valve stem bottom inner ring and spool outer ring are respectively the tapered slope of coupling and form the inflation valve port, described bowl-type barrier film, form work cavity, described upper shell between upper shell and the piston, form between piston and the sleeve and regulate cavity.
Further, this accumulator also comprises sealer, and described sealer is coated between described sleeve bottom surface and the described piston-top surface.
Because volume adjustable diaphragm formula pulsation of the present invention absorbs accumulator and has adopted technique scheme, be that upper shell is connected lock bolt with lower shell body and connects, the bowl-type barrier film is located between upper shell and the lower shell body, spool, hollow valve stem, sleeve is socketed successively the opening that is positioned at the upper shell top and is threaded connection respectively, valve gap is threaded connection the hollow valve stem top, back-up ring and spring are located in the counterbore on hollow valve stem top, the piston level is located in the upper shell and is connected by screw the sleeve bottom surface, the piston center is provided with conical surface through hole and forms the isolation valve port with outer ring, hollow valve stem bottom tapered slope, hollow valve stem bottom inner ring and spool outer ring are respectively the tapered slope of coupling and form the inflation valve port, the bowl-type barrier film, form work cavity, upper shell between upper shell and the piston, form between piston and the sleeve and regulate cavity.This accumulator can be regulated the accumulator swept volume according to the hydraulic system demand, changes the accumulator physical property, makes accumulator be operated in the best operating point of absorption pressure pulsation, Effective Raise servo hydraulic system control accuracy and performance.
Description of drawings
The present invention is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is the structural representation that volume adjustable diaphragm formula pulsation of the present invention absorbs accumulator.
Embodiment
As shown in Figure 1, volume adjustable diaphragm formula 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 bottoms are provided with mount inlet 21 and the outer ring, top is provided with outside thread, described bowl-type barrier film 4 is positioned at described lower shell body 2 and the top is overlying on described lower shell body 2 end faces, described upper shell 1 is located at described lower shell body 2 end faces and is twisted in lower shell body 2 outer ring screw threads for fastening lower shell body 2 and bowl-type barrier films 4 by described locking nut 5, described upper shell 1 open-topped and inner ring are provided with screw thread, the inner ring on described sleeve 6 tops and outer ring are respectively equipped with screw thread and twist in the screw thread on described upper shell 1 top and be positioned at described upper shell 1, be provided with through hole 61 by seal ring 11 sealings and bottom barrel level between described sleeve 6 middle parts and the described upper shell 1, described hollow valve stem 7 tops are provided with step 71 and step 71 both sides are respectively equipped with outside thread, described hollow valve stem 7 tops are provided with counterbore 72, described hollow valve stem 7 is twisted in described sleeve 6 inner ring screw threads by step 71 downside outside threads and is positioned at sleeve 6, seal by seal ring 62 between described hollow valve stem 7 and the described sleeve 6, described valve gap 9 inner rings are provided with screw thread and twist in described hollow valve stem 7 tops, described sealing gasket 91 is located between described valve gap 9 and the 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 tops, described spring 93 is inserted in described spool 8 and is positioned at described hollow valve stem 7 top counterbores 72 two ends against counterbore 72 bottom surfaces of described back-up ring 92 and hollow valve stem 7, described piston 3 levels are located in the described upper shell 1 and between the two and are sealed by seal ring 32, described piston 3 connects described sleeve 6 bottom surfaces by screw 33 and the center is provided with conical surface through hole 31, described sleeve 6 bottoms are positioned at the end face of described piston 3, central through bore 31 and outer ring that described hollow valve stem 7 bottoms are positioned at described piston 3 are tapered slope, the conical surface through hole 31 of described piston 3 forms isolation valve port 34 with the tapered slope of hollow valve stem 7 outer rings, described hollow valve stem 7 bottom inner rings and spool 8 outer rings are respectively the tapered slope of coupling and form inflation valve port 35, described bowl-type barrier film 4, form work cavity 36, described upper shell 1 between upper shell 1 and the piston 3, form between piston 3 and the sleeve 6 and regulate cavity 37.
Further, this accumulator also comprises sealer 36, and described sealer 36 is coated between described sleeve 6 bottom surfaces and described piston 3 end faces.To guarantee the sealing between sleeve bottom surface and the piston-top surface.
This accumulator is located in the hydraulic system by the mount inlet of lower shell body bottom, during its work, at first inflate operation, shed valve gap, take out sealing gasket, the adjusting hollow valve stem makes on it and moves, isolating valve port this moment opens, hollow valve stem top access high pressure nitrogen inflator, under the pressurized gas effect, the active force that the promotion spool overcomes spring moves down, and the inflation valve port is opened, pressurized gas enter the work cavity, and the gas of the cavity of working simultaneously enters the adjusting cavity through the through hole of isolation valve port and sleeve.Inflation removes inflator after finishing, and accumulator moves at internal high pressure gas and spring action lower valve core, and the inflation valve port is closed, and pressurized gas are retained in the accumulator.Return dress valve gap, sealing gasket this moment, finish the inflation operation.Then regulate to move on the hollow valve stem that the isolation valve port is closed, so that the work cavity becomes closed cavity, play the accumulation of energy effect of accumulator.
According to the needs of hydraulic system, during this accumulator volume adjustment, at first regulate hollow valve stem the isolation valve port is opened; Then turn sleeve, sleeve is moved up and down, thereby it is mobile in upper shell to drive piston, changes the volume of work cavity and adjusting cavity, the pressurized gas of working simultaneously cavity and regulating in the cavity flow by the through hole UNICOM of isolation valve port and sleeve, guarantee that the air pressure in two cavitys is consistent.After volume adjustment is finished, regulate hollow valve stem the isolation valve port closed, the work cavity becomes closed cavity again, this moment accumulator swept volume, object parameters all changes, realizes the adjustment of accumulator volume.This accumulator is by the volume of piston change work cavity, work in the adjustment process cavity with regulate cavity UNICOM, the work cavity was closed with the adjusting cavity after adjusting was finished, thereby so that this accumulator work cavity volume is adjustable, avoid the defective of traditional accumulator, improved response time, control accuracy and the performance of hydraulic system.
Claims (2)
1. a volume adjustable diaphragm formula pulsation absorbs accumulator, it is characterized in that: this accumulator comprises upper shell, lower shell body, piston, the 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 the outer ring, top is provided with outside thread, described bowl-type barrier film is positioned at described lower shell body and the 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 and inner ring are provided with screw thread, the inner ring of described upper cartridge and outer ring are respectively equipped with screw thread and twist in the screw thread on described upper shell top and be positioned at described upper shell, be provided with through hole by seal ring sealing and bottom barrel level between described sleeve middle part and the described upper shell, described hollow valve stem top is provided with step and the 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 step downside outside thread and is positioned at sleeve, seal by seal ring between described hollow valve stem and the 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 the 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 counterbore two ends, described hollow valve stem top against the counterbore bottom surface of described back-up ring and hollow valve stem, described piston level is located in the described upper shell and is sealed by seal ring between the two, described piston is connected by screw described sleeve bottom surface and the center is provided with conical surface through hole, described sleeve bottom is positioned at the end face of described piston, central through bore and outer ring that described hollow valve stem bottom is positioned at described piston are tapered slope, the conical surface through hole of described piston and the tapered slope of hollow valve stem outer ring form the isolation valve port, described hollow valve stem bottom inner ring and spool outer ring are respectively the tapered slope of coupling and form the inflation valve port, described bowl-type barrier film, form work cavity, described upper shell between upper shell and the piston, form between piston and the sleeve and regulate cavity.
2. volume adjustable diaphragm formula pulsation according to claim 1 absorbs accumulator, and it is characterized in that: this accumulator also comprises sealer, and described sealer is coated between described sleeve bottom surface and the 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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| CN201210083418.4A CN103362878B (en) | 2012-03-27 | 2012-03-27 | Adjustable volume diaphragm-type pulsation absorbs accumulator |
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| CN103362878A true CN103362878A (en) | 2013-10-23 |
| CN103362878B CN103362878B (en) | 2015-08-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889145A (en) * | 2014-12-11 | 2016-08-24 | 西安航天发动机厂 | Liquid accumulator with micro-pressure response function |
| CN106112415A (en) * | 2016-08-26 | 2016-11-16 | 浙江铂达科技有限公司 | A kind of manufacture method of diaphragm accumulator |
| CN107559467A (en) * | 2017-08-01 | 2018-01-09 | 哈尔滨工程大学 | A kind of three screw pump fluid pulsation energy storage safety valve |
| CN109956438A (en) * | 2019-04-30 | 2019-07-02 | 华兰生物工程重庆有限公司 | A kind of constant volume pressure subpackage apparatus |
| 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 |
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| 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 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889145A (en) * | 2014-12-11 | 2016-08-24 | 西安航天发动机厂 | Liquid accumulator with micro-pressure response function |
| CN105889145B (en) * | 2014-12-11 | 2018-11-16 | 西安航天发动机厂 | Minute-pressure responds liquid storage device |
| CN106112415A (en) * | 2016-08-26 | 2016-11-16 | 浙江铂达科技有限公司 | A kind of manufacture method of diaphragm accumulator |
| 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 |
| CN107559467A (en) * | 2017-08-01 | 2018-01-09 | 哈尔滨工程大学 | A kind of three screw pump fluid pulsation energy storage safety valve |
| CN109956438A (en) * | 2019-04-30 | 2019-07-02 | 华兰生物工程重庆有限公司 | A kind of constant volume pressure subpackage apparatus |
| 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 |
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| CN103362878B (en) | 2015-08-12 |
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