CN203297171U - Constant pressure variable cross-section air cavity and piston hybrid flexible hydraulic accumulator - Google Patents
Constant pressure variable cross-section air cavity and piston hybrid flexible hydraulic accumulator Download PDFInfo
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- CN203297171U CN203297171U CN2013202484382U CN201320248438U CN203297171U CN 203297171 U CN203297171 U CN 203297171U CN 2013202484382 U CN2013202484382 U CN 2013202484382U CN 201320248438 U CN201320248438 U CN 201320248438U CN 203297171 U CN203297171 U CN 203297171U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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Abstract
The utility model discloses a constant pressure variable cross-section air cavity and piston hybrid flexible hydraulic accumulator which consists of a shell, a piston, a plurality of variable cross-section cup bodies, an air cavity and a rolling membrane, wherein the piston, the variable cross-section cup bodies, the air cavity and the rolling membrane are located in the shell, the air cavity is formed between the rolling membrane and the shell, the variable cross-section cup bodies are fixedly arranged on the piston and prop the rolling membrane which is fixedly connected to the shell, and gases are pre-filled in the air cavity. The space of the piston on the shell on the other side is an oil cavity. The shell is provided with an oil access hole which is communicated with the oil cavity. The shell on one side of the air cavity is provided with an inflating valve. A limiting baffle ring is arranged on the inner wall of the shell between the piston and the rolling membrane. According to the accumulator disclosed by the utility model, the variable cross-section cup bodies are designed to ensure that the accumulator releasing energy has faster response capability and higher explosive power. The accumulator provided by the utility model can ensure that the pressure of hydraulic oil is remained unchanged substantially while the gas pressure is increased, so that pressure fluctuation of the system is small.
Description
Technical field
The utility model relates to a kind of hydraulic accumulator structure, belongs to the hydraulics field, particularly a kind of constant pressure variable cross section air cavity piston mixed flexible hydraulic accumulator.
Background technique
In hydraulic system, accumulator can play multiple effect: 1, power storage; 2, system pressurize or make emergency power source; 3, Absorbing Fluctuation, relax and impact.Specific to the series connected hydraulic hybrid power system, accumulator can play the absorption surplus power, the effect of storage braking energy.The performance of accumulator can affect the performance of hydraulic system to a great extent.
The response capability that existing bag type accumulator generally releases energy is not strong, and leather bag may cause the accumulator catastrophic failure while breaking, and causes serious operating irregularity; Piston accumulator is difficult for Absorbing Fluctuation, causes system pressure to change violent.
Summary of the invention
The purpose of this utility model is to provide a kind of constant pressure variable cross section air cavity piston mixed flexible hydraulic accumulator.With respect to common bag type accumulator and piston accumulator, many cup designs of the present utility model can guarantee when accumulator releases energy to have response capability and higher explosive force faster; The utility model can guarantee substantially to remain unchanged along with gas pressure increases hydraulic fluid pressure, reaches and makes the little purpose of system pressure fluctuation; Air cavity of the present utility model and piston mixed accumulator designs have guaranteed that when air cavity breaks gas and liquid separation make accumulator safe and reliable.
The utility model is to consist of housing, piston, a plurality of variable cross section cup, air cavity and rolling diaphragm, piston, a plurality of variable cross section cup, air cavity and rolling diaphragm are arranged in housing, between rolling diaphragm and housing, form air cavity, a plurality of variable cross section cups are fixed on piston, a plurality of variable cross section cups withstand on rolling diaphragm, and rolling diaphragm is connected on housing, in air cavity, are filled with in advance gas, the space of the opposite side housing of piston is oil pocket, and housing has the turnover oilhole and is communicated with oil pocket; The housing of air cavity one side is provided with gas charging valve, and the inner walls between piston and rolling diaphragm is provided with spacing back-up ring, and this spacing back-up ring prevents the stroke of piston and a plurality of variable cross section cups.
The beneficial effects of the utility model: with respect to common bag type accumulator and piston accumulator, a plurality of variable cross section cup designs of the present utility model can guarantee when accumulator releases energy to have response capability and higher explosive force faster; The utility model can guarantee substantially to remain unchanged along with gas pressure increases hydraulic fluid pressure, reaches and makes the little purpose of system pressure fluctuation; Air cavity of the present utility model and piston mixed accumulator designs have guaranteed that when air cavity breaks gas and liquid separation make accumulator safe and reliable
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A sectional view in Fig. 1.
Wherein: 1-housing; 2-piston seat; 3-variable cross section piston; 4-air cavity; 5-gas; 6-rolling diaphragm; 7-oil pocket; 8-turnover oilhole 8; 9-spacing back-up ring; 10-gas charging valve.
Embodiment
Refer to illustrated in figures 1 and 2, the present embodiment is to consist of housing 1, piston 2, three variable cross section cups 3, air cavity 4 and rolling diaphragms 6, piston 2, three variable cross section cups 3, air cavity 4 and rolling diaphragms 6 are arranged in housing 1, between rolling diaphragm 6 and housing 1, form air cavity 4, three variable cross section cups 3 are fixed on piston 2, three variable cross section cups 3 withstand on rolling diaphragm 6, rolling diaphragm 6 is connected on housing 1, in air cavity 4, be filled with in advance gas 5, the space of the opposite side housing 1 of piston 2 is oil pocket 7, and housing 1 has turnover oilhole 8 and is communicated with oil pocket 7; The housing 1 of air cavity 4 one sides is provided with gas charging valve 10, and housing 1 inwall between piston 2 and rolling diaphragm 6 is provided with spacing back-up ring 9, and this spacing back-up ring 9 prevents the stroke of piston 2 and three variable cross section cups 3.
Working procedure of the present utility model and principle are:
Described air cavity 4 namely plays the effect of air bag, piston 2 carrys out the storage liquid pressure energy by a plurality of variable cross section cups 3 and the extruding of air cavity 4, during the utility model normal operation, wherein the design of a plurality of variable cross section cups 3 guarantees that air cavity 4 compresses with variable cross section in compression process, make effective lifting surface area gradually less in compression process, in the situation that gas pressure increases gradually, the fluid pressure that guarantees accumulator is substantially constant, make simultaneously air cavity 4 under compressive state, have larger restoring force, when accumulator releases energy, realize rapid response.Piston 2 plays the effect of transmission of pressure and sealing, guarantees that gas and liquid still are in separated state when air cavity 4 breaks because of special circumstances, and the safety coefficient of accumulator is improved greatly.
Claims (1)
1. constant pressure variable cross section air cavity piston mixed flexible hydraulic accumulation of energy, it is characterized in that: be to be formed by housing, piston, a plurality of variable cross section cup, air cavity and rolling diaphragm, piston, a plurality of variable cross section cup, air cavity and rolling diaphragm are arranged in housing, between rolling diaphragm and housing, form air cavity, a plurality of variable cross section cups are fixed on piston, a plurality of variable cross section cups withstand on rolling diaphragm, rolling diaphragm is connected on housing, in air cavity, be filled with in advance gas, the space of the opposite side housing of piston is oil pocket, and housing has the turnover oilhole and is communicated with oil pocket; The housing of air cavity one side is provided with gas charging valve, and the inner walls between piston and rolling diaphragm is provided with spacing back-up ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202484382U CN203297171U (en) | 2013-05-09 | 2013-05-09 | Constant pressure variable cross-section air cavity and piston hybrid flexible hydraulic accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202484382U CN203297171U (en) | 2013-05-09 | 2013-05-09 | Constant pressure variable cross-section air cavity and piston hybrid flexible hydraulic accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203297171U true CN203297171U (en) | 2013-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202484382U Expired - Fee Related CN203297171U (en) | 2013-05-09 | 2013-05-09 | Constant pressure variable cross-section air cavity and piston hybrid flexible hydraulic accumulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203297171U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401607A (en) * | 2015-12-15 | 2016-03-16 | 福建工程学院 | Balanced type movable arm energy-saving system with variable-area hydraulic energy accumulator |
| CN105421510A (en) * | 2015-12-14 | 2016-03-23 | 福建工程学院 | Movable arm energy-saving system adopting variable-diameter balanced hydraulic cylinder |
| CN106895033A (en) * | 2015-11-13 | 2017-06-27 | 卡特彼勒公司 | Accumulation device assembly |
| CN110374942A (en) * | 2019-08-29 | 2019-10-25 | 山东科技大学 | A kind of bladder constant pressure accumulator of large capacity and its application |
| CN116066428A (en) * | 2023-04-06 | 2023-05-05 | 浙江大学 | Hydraulic robot energy storage device with adjustable output power |
-
2013
- 2013-05-09 CN CN2013202484382U patent/CN203297171U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895033A (en) * | 2015-11-13 | 2017-06-27 | 卡特彼勒公司 | Accumulation device assembly |
| CN105421510A (en) * | 2015-12-14 | 2016-03-23 | 福建工程学院 | Movable arm energy-saving system adopting variable-diameter balanced hydraulic cylinder |
| CN105401607A (en) * | 2015-12-15 | 2016-03-16 | 福建工程学院 | Balanced type movable arm energy-saving system with variable-area hydraulic energy accumulator |
| CN110374942A (en) * | 2019-08-29 | 2019-10-25 | 山东科技大学 | A kind of bladder constant pressure accumulator of large capacity and its application |
| WO2021031484A1 (en) * | 2019-08-29 | 2021-02-25 | 山东科技大学 | High-capacity bladder type constant pressure accumulator and application thereof |
| AU2019462665B2 (en) * | 2019-08-29 | 2022-11-17 | Shandong University Of Science And Technology | High-capacity bladder type constant pressure accumulator and application thereof |
| CN110374942B (en) * | 2019-08-29 | 2023-09-12 | 山东科技大学 | High-capacity leather bag type constant-pressure energy accumulator and application thereof |
| CN116066428A (en) * | 2023-04-06 | 2023-05-05 | 浙江大学 | Hydraulic robot energy storage device with adjustable output power |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20140509 |