CN111577676B - Double-leather-bag constant-pressure energy storage system - Google Patents
Double-leather-bag constant-pressure energy storage system Download PDFInfo
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- CN111577676B CN111577676B CN202010461920.9A CN202010461920A CN111577676B CN 111577676 B CN111577676 B CN 111577676B CN 202010461920 A CN202010461920 A CN 202010461920A CN 111577676 B CN111577676 B CN 111577676B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/021—Installations or systems with accumulators used for damping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/027—Installations or systems with accumulators having accumulator charging devices
- F15B1/0275—Installations or systems with accumulators having accumulator charging devices with two or more pilot valves, e.g. for independent setting of the cut-in and cut-out pressures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/027—Installations or systems with accumulators having accumulator charging devices
- F15B1/033—Installations or systems with accumulators having accumulator charging devices with electrical control means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
- F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
- F15B1/22—Liquid port constructions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/20—Accumulator cushioning means
- F15B2201/205—Accumulator cushioning means using gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/315—Accumulator separating means having flexible separating means
- F15B2201/3152—Accumulator separating means having flexible separating means the flexible separating means being bladders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/32—Accumulator separating means having multiple separating means, e.g. with an auxiliary piston sliding within a main piston, multiple membranes or combinations thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/41—Liquid ports
- F15B2201/411—Liquid ports having valve means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/415—Gas ports
- F15B2201/4155—Gas ports having valve means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/50—Monitoring, detection and testing means for accumulators
- F15B2201/51—Pressure detection
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a double-leather-bag constant-pressure energy storage system, and aims to solve the technical problems that constant-pressure output cannot be realized in the energy release process of the conventional energy accumulator, and the energy recycling efficiency is low. The invention relates to a double-leather-bag constant-pressure energy storage system which comprises a controller, a double-leather-bag energy accumulator, a proportional reversing valve, a high-pressure energy accumulator, a one-way valve and an auxiliary pump, wherein the controller is connected with the double-leather-bag energy accumulator; the oil bag of the double-skin bag energy accumulator is communicated with the oil cavity of the high-pressure energy accumulator through a proportional reversing valve, the pressure of the oil cavity of the high-pressure energy accumulator is greater than that of the double-skin bag energy accumulator, the oil inlet of the high-pressure energy accumulator is connected with the oil outlet of the auxiliary pump through a one-way valve, and the proportional reversing valve is controlled by the controller. The energy accumulator can output stable pressure in the working process, effectively improves the charging and discharging characteristics of the energy accumulator, improves the power density of the energy accumulator, solves the technical problems that the existing energy accumulator cannot realize constant-pressure output and has low energy recycling efficiency in the energy discharging process, and meets the requirements of modern hydraulic systems on economy, high efficiency, environmental protection and energy conservation.
Description
Technical Field
The invention belongs to the technical field of hydraulic energy storage equipment, and particularly relates to a double-leather-bag constant-pressure energy storage system.
Background
With the continuous development of modern industry, energy conservation, emission reduction and sustainable development become main development concepts of various fields in the world, and have profound significance to economy, society and environment. In the field of engineering machinery, various heavy-duty operation machines have recyclable energy in the working process, in order to recycle the energy, people often convert the energy into mechanical energy, electric energy and hydraulic energy to be temporarily stored, in the field of hydraulic pressure, an energy accumulator is a main energy storage device for storing the recyclable energy, and meanwhile, the energy accumulator can absorb the pulse pressure of a system and reduce the vibration and noise of the system.
When the energy accumulator works, high-pressure oil of a system is filled into an oil cavity of the energy accumulator, the air bag is compressed, the air bag expands to extrude the oil cavity when the energy accumulator discharges, and the high-pressure oil is provided for the system. When the pressure of the energy accumulator is reduced to be lower than the system pressure, the residual oil in the energy accumulator cannot be released, so that the energy recycling efficiency of the energy accumulator is reduced.
Disclosure of Invention
The invention aims to solve the technical problems that the conventional energy accumulator cannot realize constant-pressure output in the energy discharging process and has low energy recycling efficiency.
In order to solve the technical problems, the invention adopts the technical scheme that:
a double-leather-bag constant-pressure energy storage system comprises a controller, a double-leather-bag energy accumulator, a proportional reversing valve, a high-pressure energy accumulator, a one-way valve and an auxiliary pump; the oil bag of the double-skin-bag energy accumulator is communicated with the oil cavity of the high-pressure energy accumulator through a proportional reversing valve, the pressure of the oil cavity of the high-pressure energy accumulator is greater than that of the double-skin-bag energy accumulator, the oil inlet of the high-pressure energy accumulator is connected with the oil outlet of the auxiliary pump through a one-way valve, and the proportional reversing valve is controlled by the controller.
Further, the double-skin-bag energy accumulator comprises a shell, an air bag arranged in the shell and an oil bag arranged in the air bag; the air bag divides the shell into an air cavity and an oil cavity, a pressure sensor is arranged on the air bag, and the pressure sensor is connected with the controller; an oil valve is arranged at one end, close to the oil cavity, of the shell, and a combined valve is arranged at one end, close to the oil cavity, of the shell.
Furthermore, the combination valve comprises an oil valve interface, a conversion joint, an air valve, a through hole mushroom-shaped valve, a support ring, a positioning nut, a spring and a valve sleeve;
the valve sleeve is connected with the upper end of the inner wall of the shell through the support ring, the through-hole mushroom-shaped valve is positioned in the middle of the valve sleeve, the lower end of the through-hole mushroom-shaped valve is connected with an inlet of the oil bag, and the spring is sleeved on the through-hole mushroom-shaped valve; the conversion joint is sleeved on the upper portion of the through-hole mushroom-shaped valve and connected with the upper end of the valve sleeve, the oil valve interface is sleeved on the upper end of the through-hole mushroom-shaped valve and connected with the upper end of the conversion joint, an exhaust hole is formed in the upper end of one side of the oil valve interface, a positioning nut is arranged at the inner connection position of the through-hole mushroom-shaped valve and the oil valve interface, and the air valve is arranged on one side of the valve sleeve.
Furthermore, sealing rings are arranged at the joint of the through hole mushroom-shaped valve and the oil valve interface and the joint of the through hole mushroom-shaped valve and the valve sleeve.
Furthermore, a sealing ring is arranged at the joint of the valve sleeve and the shell.
Further, the proportional reversing valve is an electromagnetic proportional reversing valve.
Further, the controller is a proportional directional valve controller.
Furthermore, an overflow valve is arranged between the auxiliary pump and the one-way valve.
The invention has the beneficial effects that:
1. the invention can keep the stability of the pressure in the oil cavity in the whole pressure oil releasing process of the energy accumulator, so that the energy accumulator can provide the hydraulic oil with stable pressure when supplying energy to the hydraulic system, thereby reducing the pressure pulsation and impact in the system, effectively improving the charging and discharging characteristics of the energy accumulator, improving the power density of the energy accumulator, and meeting the requirements of modern hydraulic systems on economy, high efficiency, environmental protection, energy conservation, safety and reliability.
2. The invention has the advantages of simple principle, easy processing, convenient operation and the like, and can achieve the effect of constant pressure at the outlet of the energy accumulator.
3. The constant-pressure hydraulic accumulator system is adopted, so that the influence of the charging and discharging characteristics of the conventional accumulator on the operation performance is eliminated, and the capacity recycling efficiency is improved;
4. the invention ensures the stable gas pressure in the air bag through the expansion and compression of the oil bag, and solves the problem that the energy of the system cannot be fully absorbed or released due to the reduction of the internal and external pressure difference in the later stage of the charging and discharging work of the traditional energy accumulator, thereby causing the energy waste.
5. The invention can adjust the outlet pressure of the energy accumulator within a certain pressure range, can realize the special requirement that the pressure is gradually increased in the energy releasing process of the energy accumulator, and has wider application range.
6. The invention can change the pre-charging pressure of the energy accumulator by changing the pressure value set by the controller and directly changing the oil charging and discharging volume of the oil bag, and compared with the common energy accumulator which always charges and discharges air in the air cavity, the invention can change the pre-charging pressure more economically and efficiently.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the dual bladder accumulator of the present invention;
FIG. 3 is a schematic structural view of an adapter of the present invention;
FIG. 4 is a schematic structural view of an oil valve port of the present invention;
FIG. 5 is a schematic view of a through-hole mushroom valve of the present invention;
description of reference numerals: 1-a controller; 2-double-leather-bag energy accumulator, 21-shell, 22-air bag, 23-oil bag, 24-air cavity, 25-oil cavity and 26-oil valve; 27-combination valve, 271-oil valve interface, vent-2711, 272-adapter, 273-gas valve, 274-through-hole mushroom valve, 275-support ring, 276-positioning nut, 277-sealing ring, 278-spring, 279-valve sleeve, 280-sealing ring; 3-proportional reversing valve; 4-a high pressure accumulator; 5-a one-way valve; 6-an auxiliary pump; 7-a pressure sensor; 8-overflow valve.
Detailed Description
The invention is further described below with reference to examples and figures.
As shown in fig. 1, the double-skin constant pressure energy storage system according to the embodiment includes a controller 1, a double-skin energy accumulator 2, a proportional directional valve 3, a high pressure energy accumulator 4, a check valve 5, an auxiliary pump 6 and an overflow valve 8;
the oil bag 23 of the double-leather-bag energy accumulator 2 is communicated with the oil cavity of the high-pressure energy accumulator 4 through the proportional reversing valve 3, the proportional reversing valve 3 is an electromagnetic proportional reversing valve, the oil charging and discharging speed can be controlled, and the constant pressure of the energy accumulator can be controlled.
The pressure of the oil cavity of the high-pressure energy accumulator 4 is greater than the pressure of the double-leather-bag energy accumulator 2, the oil inlet of the high-pressure energy accumulator 4 is connected with the oil outlet of the auxiliary pump 6 through the one-way valve 5, and the overflow valve 8 is arranged between the auxiliary pump 6 and the one-way valve 5, so that the high-pressure energy accumulator 4 can be prevented from being excessively high in charging pressure. The proportional reversing valve 3 is controlled by a controller 1, and the controller 1 is a proportional reversing valve controller.
As shown in fig. 2, the double-bladder energy accumulator 2 comprises a housing 21, an air bladder 22 arranged in the housing 21 and an oil bladder 23 arranged in the air bladder 22; the air bag 22 divides the interior of the shell 21 into an air cavity 24 and an oil cavity 25, a pressure sensor 7 is arranged on the air bag 22, and the pressure sensor 7 is connected with the controller 1; an oil valve 26 is arranged at one end of the shell 21 close to the oil chamber 25, and a combination valve 27 is arranged at one end of the shell 21 close to the oil bag 23.
The combination valve 27 comprises an oil valve interface 271 (shown in fig. 4), a switching joint 272 (shown in fig. 3), an air valve 273, a through-hole mushroom valve 274 (shown in fig. 5), a support ring 275, a positioning nut 276, a spring 278 and a valve sleeve 279;
the valve housing 279 is connected to the upper end of the inner wall of the housing 21 by a support ring 275, the through-hole mushroom valve 274 is located in the middle of the valve housing 279 and the lower end of the through-hole mushroom valve 274 is connected to the inlet of the oil pocket 23, and the through-hole mushroom valve 274 prevents the oil pocket 23 from being pressed into the valve housing 279, thereby preventing the valve housing 279 from being broken.
The spring 278 is sleeved on the through hole mushroom-shaped valve 274, and the spring 278 supports the through hole mushroom-shaped valve 274 to ensure that the air valve 273 is inflated and exhausted smoothly;
the conversion joint 272 is sleeved on the upper part of the through-hole mushroom-shaped valve 274 and is in threaded connection with the upper end of the valve sleeve 279, the oil valve interface 271 is sleeved on the upper end of the through-hole mushroom-shaped valve 274 and is in threaded connection with the upper end of the conversion joint 272, the upper end of one side of the oil valve interface 271 is provided with an exhaust hole 2711, and the inner connection part of the through-hole mushroom-shaped valve 274 and the oil valve interface 271 is provided with a positioning nut 276 to prevent the through-hole mushroom-shaped valve 274 from falling off.
The gas valve 273 is provided at one side of the valve housing 279. When the double bladder accumulator 2 is pre-charged, high pressure gas is injected into the gas valve 273 and enters the gas chamber 24 through the valve sleeve 279.
And sealing rings 277 are arranged at the joint of the through-hole mushroom-shaped valve 274 and the oil valve interface 271 and the joint of the through-hole mushroom-shaped valve 274 and the valve sleeve 279, so that oil leakage and air leakage can be prevented.
The joint between the valve barrel 279 and the housing 21 is provided with a sealing ring 280 to prevent gas leakage and oil leakage.
The working principle of the invention is as follows:
when the double-skin-bag energy accumulator 2 releases energy, the air bag 22 expands, the air pressure decreases along with the expansion, the pressure sensor 7 detects that the pressure decreases, the pressure is compared with the pressure set in the controller 1, then the electromagnetic proportional reversing valve 3 is controlled to be in an upper position, the high-pressure oil chamber of the high-pressure energy accumulator 4 is communicated with the oil bag 23 of the double-skin-pressure energy accumulator, the high-pressure oil enters the oil bag 23 through the through-hole mushroom-shaped valve 274, the oil liquid in the high-pressure energy accumulator 4 flows into the oil bag 23 to expand the oil bag 23, the gas in the air bag 22 is compressed, the air pressure is kept constant, and the oil valve 26 at the oil outlet of the double-skin-bag energy accumulator 2 is kept constant in oil pressure. Wherein, when the oil bag 23 expands to a certain volume, the through-hole mushroom valve 274 will be pressed to prevent the oil bag 23 from extruding into the valve barrel 279, and the valve barrel 279 will be prevented from being broken.
After the energy releasing of the double-leather-bag energy accumulator 2 is finished, the controller 1 controls the electromagnetic proportional directional valve 3 to be in the middle position, the connection between the double-leather-bag energy accumulator 2 and the high-pressure energy accumulator 4 is blocked, the volume of oil in the oil bag 23 is guaranteed to be constant, and therefore the air pressure in the air bag 22 is guaranteed to be constant. If the system oil pressure in the working device has impact, the double-leather-bag energy accumulator 2 can absorb the energy of the part so as to ensure the normal pressure of the whole system.
When the double-leather-bag energy accumulator 2 absorbs system energy to store energy, the controller 1 controls the electromagnetic proportional directional valve 3 to be in the lower position, the oil bag 23 is communicated with an oil tank, and the oil in the air bag 22 is compressed by air pressure in the oil bag 23 and flows into the oil tank. Meanwhile, the auxiliary oil pump 6 supplies oil to the high-pressure energy accumulator 4, the oil pressure in the high-pressure energy accumulator 4 is kept to be larger than that of the double-leather-bag energy accumulator 2, and the overflow valve 8 can prevent the high-pressure energy accumulator 4 from being overhigh in charging pressure.
When the pre-charging pressure of the double-leather-bag energy accumulator 2 needs to be changed within a certain range, the set pressure value in the controller 1 can be directly adjusted, the electromagnetic proportional directional valve 3 is controlled to charge and discharge oil for the oil bag 23, and the volume of the oil bag 23 is changed to compress the air bag 22, so that the pre-charging pressure of the double-leather-bag energy accumulator 2 is changed.
Claims (6)
1. The utility model provides a two skin bag constant voltage energy storage systems which characterized in that: the device comprises a controller (1), a double-skin-bag energy accumulator (2), a proportional reversing valve (3), a high-pressure energy accumulator (4), a one-way valve (5) and an auxiliary pump (6); the oil pocket of the double-leather-pocket energy accumulator (2) is communicated with the oil pocket of the high-pressure energy accumulator (4) through a proportional reversing valve (3), the pressure of the oil pocket of the high-pressure energy accumulator (4) is greater than that of the double-leather-pocket energy accumulator (2), the oil inlet of the high-pressure energy accumulator (4) is connected with the oil outlet of the auxiliary pump (6) through a one-way valve (5), and the proportional reversing valve (3) is controlled by the controller (1);
the double-leather-bag energy accumulator (2) comprises a shell (21), an air bag (22) arranged in the shell (21) and an oil bag (23) arranged in the air bag (22); the air bag (22) divides the interior of the shell (21) into an air cavity (24) and an oil cavity (25), a pressure sensor (7) is arranged on the air bag (22), and the pressure sensor (7) is connected with the controller (1); an oil valve (26) is arranged at one end, close to the oil cavity (25), of the shell (21), and a combined valve (27) is arranged at one end, close to the oil bag (23), of the shell (21);
the combined valve (27) comprises an oil valve interface (271), a conversion joint (272), an air valve (273), a through hole mushroom-shaped valve (274), a support ring (275), a positioning nut (276), a spring (278) and a valve sleeve (279);
the valve sleeve (279) is connected with the upper end of the inner wall of the shell (21) through a support ring (275), the through-hole mushroom-shaped valve (274) is positioned in the middle of the valve sleeve (279), the lower end of the through-hole mushroom-shaped valve (274) is connected with an inlet of the oil bag (23), and the spring (278) is sleeved on the through-hole mushroom-shaped valve (274); the oil valve is characterized in that the conversion joint (272) is sleeved on the upper portion of the through-hole mushroom-shaped valve (274) and connected with the upper end of the valve sleeve (279), the oil valve interface (271) is sleeved on the upper end of the through-hole mushroom-shaped valve (274) and connected with the upper end of the conversion joint (272), an exhaust hole (2711) is formed in the upper end of one side of the oil valve interface (271), a positioning nut (276) is arranged at the inner connection position of the through-hole mushroom-shaped valve (274) and the oil valve interface (271), and the air valve (273) is arranged on one side of the valve sleeve (279).
2. The double-bladder constant pressure energy storage system of claim 1, wherein: and sealing rings (277) are arranged at the joint of the through-hole mushroom-shaped valve (274) and the oil valve interface (271) and the joint of the through-hole mushroom-shaped valve (274) and the valve sleeve (279).
3. The double-bladder constant pressure energy storage system of claim 1, wherein: and a sealing ring (280) is arranged at the joint of the valve sleeve (279) and the shell (21).
4. The double-bladder constant pressure energy storage system of claim 1, wherein: the proportional reversing valve (3) is an electromagnetic proportional reversing valve.
5. The double-bladder constant pressure energy storage system of claim 1, wherein: the controller (1) is a proportional reversing valve controller.
6. The double-bladder constant pressure energy storage system of claim 1, wherein: an overflow valve (8) is arranged between the auxiliary pump (6) and the one-way valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010461920.9A CN111577676B (en) | 2020-05-27 | 2020-05-27 | Double-leather-bag constant-pressure energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010461920.9A CN111577676B (en) | 2020-05-27 | 2020-05-27 | Double-leather-bag constant-pressure energy storage system |
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| CN111577676A CN111577676A (en) | 2020-08-25 |
| CN111577676B true CN111577676B (en) | 2022-02-08 |
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| CN113083440B (en) * | 2021-03-10 | 2022-11-01 | 栾川县金鼎矿业有限公司 | Control method of high-pressure roller mill roller gap dynamic control and deviation correction hydraulic system |
| CN114165488A (en) * | 2021-12-18 | 2022-03-11 | 浙江奥莱尔液压有限公司 | Bag type energy accumulator |
| CN114876915B (en) * | 2022-04-08 | 2023-03-17 | 北京航空航天大学 | Self-pressure-regulating gas-liquid coupling type fluid pulsation vibration damping device |
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2020
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| US4187682A (en) * | 1979-01-02 | 1980-02-12 | The Boeing Company | Constant pressure hydraulic accumulator |
| WO1994001680A1 (en) * | 1992-07-09 | 1994-01-20 | Hydac Technology Gmbh | Multi-diaphragm store |
| CN101294586A (en) * | 2008-06-05 | 2008-10-29 | 上海交通大学 | Compound leather bag hydraulic accumulator |
| CN102852867A (en) * | 2012-10-23 | 2013-01-02 | 沈阳东北电力调节技术有限公司 | Breathable closed oil tank in hydraulic oil cylinder structure |
| CN106415024A (en) * | 2014-07-05 | 2017-02-15 | 贺德克技术有限公司 | Hydropneumatic pressure accumulator |
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| CN209539666U (en) * | 2018-12-28 | 2019-10-25 | 湘潭高工液压有限公司 | A kind of crusher hydraulic oil cylinder with anti-broken accumulator |
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