CN116592004B - Combined stroke-adjustable piston type energy accumulator - Google Patents
Combined stroke-adjustable piston type energy accumulator Download PDFInfo
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- CN116592004B CN116592004B CN202310863718.2A CN202310863718A CN116592004B CN 116592004 B CN116592004 B CN 116592004B CN 202310863718 A CN202310863718 A CN 202310863718A CN 116592004 B CN116592004 B CN 116592004B
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- accumulator
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- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 55
- 230000007704 transition Effects 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 230000003068 static effect Effects 0.000 abstract description 8
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 142
- 239000000243 solution Substances 0.000 description 12
- 239000012530 fluid Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 239000010729 system oil Substances 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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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
- F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
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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
-
- 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)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The application discloses a combined stroke-adjustable piston type energy accumulator, which relates to the technical field of energy accumulators and comprises an energy accumulator cylinder body, wherein a piston assembly is movably arranged in the energy accumulator cylinder body, one end of the energy accumulator cylinder body is provided with an air seal end cover, the other end of the energy accumulator cylinder body is provided with an oil seal end cover, an oil supply interface is arranged on the oil seal end cover, and a piston mechanical starting assembly is also arranged in the oil seal end cover; the oil supply interface is in transmission connection with the piston mechanical starting assembly, and when the oil supply interface is used for initially supplying oil, the piston mechanical starting assembly is driven by passive mechanical lifting to move. The application realizes the mechanical starting of the piston assembly when in static state, and then the piston assembly is pushed to move by the oil pressure, so that the problem that the oil seal end cover is easy to seal when the piston assembly is pushed by the oil pressure is avoided, and meanwhile, the piston assembly is prevented from leaking when the piston assembly is pressed between the peripheral side of the piston assembly and the inner wall of the accumulator cylinder body.
Description
Technical Field
The application relates to the technical field of energy accumulators, in particular to a piston type energy accumulator with an adjustable compound stroke.
Background
Accumulators are well known for use in hydraulic systems. According to the structural division of the accumulator, the common accumulator products at present mainly comprise a bag type accumulator and a piston type accumulator, the working principle of the piston type accumulator is that a piston separates a cylinder barrel into two parts, the upper part is filled with gas with certain pressure in advance, the lower part is communicated with a hydraulic oil way through an oil port, when the system oil pressure rises, hydraulic oil pushes the piston to move upwards to compress the gas, the gas pressure rises, when the gas pressure and the system oil pressure are balanced, the piston stops moving, the accumulator completes a liquid filling stage, when the system oil pressure is reduced, the gas pressure is higher than the oil pressure, the gas pushes the piston to move downwards, the accumulator supplements oil to the system through the oil port, the system pressure is maintained, and the accumulator completes a liquid discharging stage. As long as the pressure of the system changes, the pressure of the oil in the accumulator changes along with the pressure, the piston moves along with the pressure according to the force balance principle, and the accumulator is repeatedly filled and discharged, so that the effect of storing and releasing hydraulic energy is achieved.
If the patent is issued with the publication number CN 203835821U, the Chinese patent with the name of piston accumulator, it includes the cylinder body, the piston of movably locating in the cylinder body, and gas port end cover and the hydraulic fluid port end cover of being connected with the cylinder body cooperation respectively, inlay between piston and the cylinder body and be equipped with first sealing washer and second sealing washer, cooperate between piston, cylinder body and the gas port end cover and form the air cavity, cooperate between piston, cylinder body and the hydraulic fluid port end cover and form the oil pocket, be equipped with the inflation valve with the air cavity intercommunication on the gas port end cover, be equipped with the oil circuit along the axial on the hydraulic fluid port end cover, the oil pocket is linked together with the hydraulic pipeline through the oil circuit, be provided with the oil groove that is used for holding butter along the circumference on the piston, the oil groove is located between first sealing washer and the second sealing washer, cooperate between piston and the hydraulic fluid port end cover to be equipped with laborsaving mechanism, laborsaving mechanism includes the inner leg that the shaping is located on the piston terminal surface, outer sleeve, the outer spring of movably locating in the oil pocket between outer sleeve and the hydraulic fluid port end cover, the outer sleeve cover is located outside, the inner leg, the outer sleeve is connected between outer sleeve and the outer sleeve, the diameter of oil pocket is greater than the outer diameter of outer sleeve.
According to the patent, when the piston type energy accumulator is used for initial oil injection, the end face of the piston of the oil cylinder is attached to the end face of the oil seal end cover, and at the moment, the piston is kept in a static state, so that the starting pressure of the piston is larger, the sealing problem is easy to occur in the oil seal end cover, meanwhile, the compression deformation leakage of the circumferential sealing part of the piston is easy to occur due to the fact that the compression deformation leakage is easy to occur due to the compression between the circumferential side of the piston of the oil cylinder and the inner wall of the oil cylinder, deformation friction occurs when the piston moves, and the service life of the piston is influenced, so that the leakage condition is aggravated.
Disclosure of Invention
The application aims to provide a piston type energy accumulator with adjustable composite stroke, which solves the defects in the prior art.
In order to achieve the above object, the present application provides the following technical solutions: the piston type energy accumulator with the adjustable composite stroke comprises an energy accumulator cylinder body, wherein a piston assembly is movably arranged in the energy accumulator cylinder body, one end of the energy accumulator cylinder body is provided with an air seal end cover, the other end of the energy accumulator cylinder body is provided with an oil seal end cover, an oil supply interface is arranged on the oil seal end cover, and a piston mechanical starting assembly is also arranged in the oil seal end cover; the oil supply interface is in transmission connection with the piston mechanical starting assembly, and when the oil supply interface is used for initially supplying oil, the piston mechanical starting assembly is driven by passive mechanical lifting to move the piston assembly, and then the piston assembly is pushed to move by the oil delivered by the oil supply interface.
As a further description of the above technical solution: the mechanical starting assembly comprises a starting oil cavity arranged in an oil seal end cover, the starting oil cavity is communicated with the oil supply interface, an expansion cavity is arranged at one end, close to the accumulator cylinder body, of the starting oil cavity, a through hole communicated with the inside of the accumulator cylinder body is formed in the circumferential side of the bottom of the expansion cavity, and a mechanical jacking assembly is arranged in the starting oil cavity.
As a further description of the above technical solution: the mechanical jacking assembly comprises a sealing seat arranged in the starting oil cavity in a sliding mode, the bottom of the sealing seat is vertically connected with a push rod, the push rod penetrates through the oil seal end cover and extends into the inner cavity of the accumulator cylinder body, a tension spring is connected between the sealing seat and the bottom of the expansion cavity, and the elasticity of the tension spring is used for driving the sealing seat to be attached to the bottom of the expansion cavity.
As a further description of the above technical solution: the oil end sealing cover is further provided with a transition compensation mechanism, the transition compensation mechanism is in transmission connection with the mechanical jacking component, when the mechanical jacking component passively drives the piston component to move, the transition compensation mechanism automatically performs space compensation on a cavity formed between the piston component and the accumulator cylinder body when the piston component moves, so that the cavity formed between the piston component and the accumulator cylinder body is full of oil.
As a further description of the above technical solution: the transition compensation mechanism comprises a sleeve seat fixed on the inner side of the oil seal end cover, a sealing sleeve is embedded in the sleeve seat in a sliding manner, and the top end of the ejector rod is connected with the inner top of the sealing sleeve.
As a further description of the above technical solution: the accumulator cylinder body comprises a joint seat, one side of the joint seat is provided with an air cylinder, and the other side of the joint seat is provided with an oil cylinder.
As a further description of the above technical solution: the air seal end cover is arranged at the end head of the cylinder, an air supply valve is arranged on the air seal end cover, and the oil seal end cover is arranged at the end head of the oil cylinder.
As a further description of the above technical solution: threaded connectors are symmetrically arranged on two sides of the joint seat, and the air cylinder and the oil cylinder are spirally connected to two ends of the joint seat through the threaded connectors.
As a further description of the above technical solution: the two sides of the joint seat are also rotatably sleeved with connecting flanges, the outer sides of the cylinder and the cylinder interface are rotatably provided with fixing flanges, and the fixing flanges are fixedly connected with the connecting flanges through studs.
As a further description of the above technical solution: the piston assembly comprises an air cavity piston and an oil cavity piston, the air cavity piston is movably embedded in the cylinder, the oil cavity piston is movably embedded in the oil cylinder, a plurality of support rods are connected between the air cavity piston and the oil cavity piston in an annular array, and the support rods movably penetrate through the joint seat.
In the technical scheme, the piston type energy accumulator with the adjustable composite stroke has the following beneficial effects:
this adjustable piston energy storage ware of combined type stroke realizes moving through piston mechanical starting component mechanical type butt drive piston assembly when initial oiling through the piston mechanical starting component, and the piston assembly is continuous the oiling and automatic switch becomes to promote the piston assembly through fluid pressure and remove when moving the state, realizes mechanical type start when the piston assembly is static promptly, and rethread fluid pressure promotes after the completion of starting and removes, avoids starting pressure at the initial resting state of piston assembly too big, and direct through fluid pressure promotion piston assembly easily leads to the oil blanket end cover to appear sealing problem, prevents simultaneously that the piston assembly from being pressed between piston assembly week side and the energy storage ware cylinder body inner wall and leading to the piston assembly to appear leaking.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of a piston accumulator with adjustable stroke according to a first embodiment of the present application;
FIG. 2 is a schematic diagram of a piston accumulator with adjustable stroke according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a compound stroke-adjustable piston accumulator according to an embodiment of the present application;
fig. 4 is a schematic diagram of a split structure of a piston accumulator with adjustable composite stroke according to an embodiment of the present application;
FIG. 5 is a schematic diagram of an assembly structure of a joint seat and a piston assembly according to an embodiment of the present application;
FIG. 6 is a schematic view of an oil-capped cap according to an embodiment of the present application;
FIG. 7 is a cross-sectional view of an oil-capped cap in an embodiment of the present application;
FIG. 8 is a schematic diagram of a cylinder in an embodiment of the application when not being filled;
FIG. 9 is a schematic diagram showing a state of initial oil filling of a cylinder according to an embodiment of the present application;
fig. 10 is a schematic view showing an internal structure of an oil-capped cap according to an embodiment of the present application.
Reference numerals illustrate:
1. an accumulator cylinder; 11. a joint seat; 111. a threaded interface; 112. a connecting flange; 12. a cylinder; 13. an oil cylinder; 14. a fixed flange; 2. a gas seal end cover; 21. an air supply valve; 3. an oil seal end cover; 31. an oil supply port; 4. a piston assembly; 41. a support rod; 42. an air cavity piston; 43. an oil chamber piston; 5. a piston mechanical start assembly; 51. starting an oil cavity; 52. expanding the cavity; 53. a through hole; 54. a sealing seat; 55. a tension spring; 56. a push rod; 57. a transition compensation mechanism; 571. a sleeve seat; 572. and (3) sealing the sleeve.
Detailed Description
In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings.
Embodiment one: referring to fig. 1 and fig. 6-fig. 10, an embodiment of the present application provides a technical solution: the utility model provides a compound stroke adjustable piston accumulator, including accumulator cylinder 1, the activity is provided with piston assembly 4 in the accumulator cylinder 1, wherein accumulator cylinder 1 is the cylindric structure of both ends opening, piston assembly 4 slides and inlays and establish in accumulator cylinder 1, and the one end of accumulator cylinder 1 is provided with air seal end cover 2, the other end is provided with oil blanket end cover 3, be provided with fuel feeding interface 31 on the oil blanket end cover 3, thereby realize oiling to accumulator cylinder 1 through fuel feeding interface 31 and promote piston assembly 4 through the oil pressure and remove, still be provided with piston machinery starting assembly 5 in the oil blanket end cover 3; the oil supply interface 31 is in transmission connection with the piston mechanical starting assembly 5, when the oil supply interface 31 is used for initially supplying oil, the piston mechanical starting assembly 5 is driven by passive mechanical lifting to move the piston assembly 4, and then the piston assembly 4 is driven to move by the oil delivered by the oil supply interface 31. Namely, the piston mechanical starting assembly 5 is arranged, so that oil is injected into the accumulator cylinder 1 through the oil supply interface 31 to push the piston assembly 4 in the accumulator cylinder 1 to move into two working strokes, the piston assembly 4 is in a static state in a first working stroke, the piston mechanical starting assembly 5 is driven to move during initial oil injection, the piston mechanical starting assembly 5 abuts against the piston assembly 4 and pushes the piston assembly 4 to move, oil is continuously injected in a second working stroke, and oil is injected into a cavity between the piston assembly 4 and the accumulator cylinder 1 through the oil supply interface 31, so that the piston assembly 4 is pushed to continuously move through oil pressure.
Specifically, the piston mechanical starting assembly 5 is arranged, so that when initial oiling is realized, the piston assembly 4 is driven to move by being in mechanical butt joint through the piston mechanical starting assembly 5, the piston assembly 4 is continuously oiling in a moving state and is automatically switched to be pushed to move through oil pressure, namely, the piston assembly 4 is mechanically started when being static, and is pushed to move through the oil pressure after the starting is finished, the problem that the oil seal end cover 3 is easily sealed when the piston assembly 4 is directly pushed through the oil pressure in the initial static state of the piston assembly 4 is avoided, and meanwhile, leakage of the piston assembly 4 caused by pressure between the periphery of the piston assembly 4 and the inner wall of the accumulator cylinder body 1 is prevented.
In still another embodiment provided by the application, the mechanical piston starting assembly 5 comprises a starting oil cavity 51 arranged in an oil seal end cover 3, the starting oil cavity 51 is communicated with an oil supply interface 31, an expansion cavity 52 is arranged at one end, close to an accumulator cylinder 1, of the starting oil cavity 51, the diameter of the expansion cavity 52 is larger than that of the starting oil cavity 51, through holes 53 communicated with the inside of the accumulator cylinder 1 are formed in the circumferential side of the bottom of the expansion cavity 52, the through holes 53 are formed in a plurality of, the through holes 53 are arranged in an annular equal angle, the through holes 53 are positioned at the outer side of the vertical projection of the starting oil cavity 51 in the expansion cavity 52, a mechanical jacking assembly is arranged in the starting oil cavity 51, the mechanical jacking assembly comprises a sealing seat 54 which is arranged in the starting oil cavity 51 in a sliding mode, the depth of the expansion cavity 52 is larger than the thickness of the sealing seat 54, namely, when the sealing seat 54 slides into the expansion cavity 52 from the starting oil cavity 51, the starting oil cavity 51 is in a communicating state with the expansion cavity 52, the sealing seat 54 is in a disc-shaped structure, the bottom of the sealing seat 54 is vertically connected with a push rod 56, the bottom of the sealing seat 54 is vertically fixed at the position of the sealing seat 54, the bottom of the sealing seat 54, the push rod 56 is vertically arranged at the bottom of the sealing seat 54, the sealing seat is vertically, the bottom of the sealing seat is fixedly arranged at the position of the sealing seat 54, at the circle center of the bottom of the sealing seat 55, and is fixedly connected with the bottom of the expansion cavity 55, and is arranged in the sealing seat 55, and is embedded in the bottom groove 55, and is embedded in the sealing seat 55, and is arranged in the sealing groove 55, and is arranged in the bottom groove 55, and is in the sealing cavity and is in the bottom cavity and is fitted.
Specifically, in the first working stroke, the piston assembly 4 is in a static state, during initial oiling, oil is injected into the starting oil cavity 51 through the oil supply port 31, then the sealing seat 54 is driven to move in the starting oil cavity 51 through oil pressure, so that the sealing seat 54 is matched with the ejector rod 56 to abut against the piston assembly 4, the piston assembly 4 is driven to move in the accumulator cylinder 1 through the ejector rod 56, meanwhile, oil in the starting oil cavity 51 and the expansion cavity 52 is synchronously pushed into a cavity generated by the movement of the piston assembly 4 in the accumulator cylinder 1 through the through hole 53 during the movement of the sealing seat 54, when the sealing seat 54 moves into the expansion cavity 52, the second working stroke is started, namely, the expansion cavity 52 is communicated with the starting oil cavity 51, the oil injected through the oil supply port 31 enters the expansion cavity 52 through the starting oil cavity 51, then enters the cavity generated by the movement of the piston assembly 4 in the accumulator cylinder 1 through the through hole 53 on the expansion cavity 52, and the piston assembly 4 is pushed to move in the accumulator cylinder 1 through the oil pressure, namely, the mechanical starting of the piston assembly 4 is realized during static state, and the movement of the piston assembly 4 is pushed to move through the pressure after the starting is completed.
In a further embodiment provided by the application, the oil seal end cover 3 is further provided with a transition compensation mechanism 57, the transition compensation mechanism 57 is in transmission connection with the mechanical jacking component, when the mechanical jacking component passively drives the piston component 4 to move, the transition compensation mechanism 57 automatically performs space compensation on a cavity formed between the piston component 4 and the accumulator cylinder 1 when the piston component moves so as to enable the cavity formed between the piston component 4 and the accumulator cylinder 1 to be filled with oil, and here, the applicant needs to state that the inner diameter of the starting oil cavity 51 in the oil seal end cover 3 is obviously smaller than the inner diameter of the accumulator cylinder 1 (because the oil seal end cover 3 is embedded on an interface of the accumulator cylinder 1), namely, in a first working stroke, the piston component 4 is driven to start to move in the accumulator cylinder 1 by the sealing seat 54 matched with the ejector rod 56 to abut against the piston component 4, simultaneously, when the sealing seat 54 moves, oil in the starting oil cavity 51 and the expansion cavity 52 is synchronously pushed to a cavity generated by the movement of the piston assembly 4 in the accumulator cylinder 1 through the through hole 53, but the volume of the oil pushed by the sealing seat 54 is obviously smaller than the volume generated by the cavity generated by the movement of the piston assembly 4 in the accumulator cylinder 1, so that a fluctuation exists when the piston assembly 4 in the accumulator cylinder 1 is pushed to be in oil filling by the oil supply interface 31 in the process of moving from a first working stroke to a second working stroke, (namely, the cavity generated by the movement of the piston assembly 4 in the accumulator cylinder 1 is filled with oil firstly when the piston assembly enters the second working stroke and then the piston is pushed to move by the oil pressure), thereby influencing the stability and sealing effect of the movement of the piston, when the first working stroke enters the second working stroke, the space compensation is automatically carried out on the cavity formed between the piston assembly 4 and the accumulator cylinder 1 when the piston assembly 4 moves through the transition compensation mechanism 57 so that the cavity formed between the piston assembly 4 and the accumulator cylinder 1 is full of oil, thereby realizing the stable transition from the first working stroke to the second working stroke, improving the stability of the movement of the piston assembly 4, weakening the fluctuation from the transition from the first working stroke to the second tool stroke and further preventing the leakage of the piston assembly 4.
The transient compensation mechanism 57 comprises a sleeve seat 571 fixed on the inner side of the oil seal end cover 3, a sealing sleeve 572 is embedded in the sleeve seat 571 in a sliding manner, and the top end of the ejector rod 56 is connected with the inner top of the sealing sleeve 572. Specifically, during initial oiling, oil is injected into the starting oil cavity 51 through the oil supply port 31, then the sealing seat 54 is driven to move in the starting oil cavity 51 through oil pressure and is matched with the ejector rod 56 to abut against the piston assembly 4 so as to drive the piston assembly 4 to move in the accumulator cylinder 1, oil in the starting oil cavity 51 and the expanding cavity 52 is synchronously pushed into a cavity generated by the movement of the piston assembly 4 in the accumulator cylinder 1 through the through holes 53 when the sealing seat 54 moves, meanwhile, the ejector rod 56 abuts against the piston assembly 4 so as to push the piston assembly 4 to move, at the moment, the ejector rod 56 synchronously drives the sealing sleeve 572 to convexly move in the sleeve seat 571, so that the volume of a cavity formed between the piston assembly 4 and the accumulator cylinder 1 during the movement of the transition compensation mechanism 57 is reduced, and the volume of the cavity formed between the piston assembly 4 and the accumulator cylinder 1 is equal to the volume of the oil synchronously pushed by the movement of the sealing seat 54 during the movement of the piston assembly 4, and the cavity generated by the movement of the piston assembly 4 in the accumulator cylinder 1 is full of oil. The first working stroke is smoothly transited to the second working stroke, and the moving stability of the piston assembly 4 is improved.
Embodiment two: referring to fig. 2-5, the accumulator cylinder 1 includes a joint seat 11, a cylinder 12 is disposed on one side of the joint seat 11, an oil cylinder 13 is disposed on the other side of the joint seat 11, that is, the cylinder 12 and the oil cylinder 13 are symmetrically connected on two sides of the joint seat 11, an air seal end cover 2 is disposed at an end of the cylinder 12, the cylinder 12 passes through the joint seat 11 and a stroke air cavity of the air seal end cover 2, an air supply valve 21 is disposed on the air seal end cover 2, air pressure inside the air cavity is regulated through the air supply valve 21, and the oil seal end cover 3 is disposed at an end of the oil cylinder 13. The oil cylinder 13 forms an oil cavity through the oil seal end cover 3 and the joint seat 11, and the energy accumulator cylinder body 1 is arranged to be of a split structure with the joint seat 11 symmetrically connected with the air cylinder 12 and the oil cylinder 13, so that disassembly and maintenance are convenient, and meanwhile, the disassembly and replacement can be independently performed, and the maintenance cost is reduced.
In still another embodiment provided by the application, threaded interfaces 111 are symmetrically arranged on two sides of the joint seat 11, the air cylinder 12 and the oil cylinder 13 are connected to two ends of the joint seat 11 in a threaded manner through the threaded interfaces 111, connecting flanges 112 are rotatably sleeved on two sides of the joint seat 11, fixing flanges 14 are rotatably arranged on the outer sides of the interfaces of the air cylinder 12 and the oil cylinder 13, and the fixing flanges 14 are fixedly connected with the connecting flanges 112 through studs. Further, the cylinder 12 and the cylinder 13 are symmetrically and spirally fixedly connected to two sides of the joint seat 11 in a matched mode through the threaded interfaces 111, the connecting flanges 112 are rotatably sleeved on two sides of the joint seat 11, meanwhile, the fixing flanges 14 are arranged on the outer sides of the interfaces of the cylinder 12 and the cylinder 13, the positions of the connecting flanges 112 are kept corresponding to the positions of the fixing flanges 14, the fixing flanges 14 on the cylinder 12 and the cylinder 13 are connected with the connecting flanges 112 on the joint seat 11 through studs, double interlocking fixation of the cylinder 12 and the cylinder 13 is achieved, and stability and sealing effect of connection of the cylinder 12 and the cylinder 13 are remarkably improved.
In still another embodiment of the present application, the piston assembly 4 includes an air cavity piston 42 and an oil cavity piston 43, the air cavity piston 42 is movably embedded in the cylinder 12, the oil cavity piston 43 is movably embedded in the cylinder 13, and a plurality of support rods 41 are connected between the air cavity piston 42 and the oil cavity piston 43 in an annular array, and the support rods 41 movably penetrate through the joint seat 11. Furthermore, the accumulator cylinder body 1 is provided with the split structure of the connector 11 symmetrically connected with the cylinder 12 and the oil cylinder 13, and the air cavity piston 42 and the oil cavity piston 43 are respectively arranged in a matched mode, so that oil pressure driving is realized through the air cavity piston 42 and the oil cavity piston 43 corresponding to bearing air pressure, the intermittent bearing of the air pressure and the oil pressure on two sides of a single piston is avoided, the tightness of the piston is influenced, the stability and the sealing effect of the piston movement are further improved, meanwhile, the air cavity piston 42 and the oil cavity piston 43 are connected through a plurality of support rods 41 which are arranged in an annular array, the support limiting on the movement of the air cavity piston 42 and the oil cavity piston 43 is realized, the inclination is prevented when the air cavity piston 42 and the oil cavity piston 43 move, and the stability of the movement of the air cavity piston 42 and the oil cavity piston 43 is further improved.
While certain exemplary embodiments of the present application have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the application, which is defined by the appended claims.
Claims (8)
1. The utility model provides a compound stroke adjustable piston energy accumulator, includes energy accumulator cylinder body (1), the activity is provided with piston assembly (4) in energy accumulator cylinder body (1), and the one end of energy accumulator cylinder body (1) is provided with gas seal end cover (2), and the other end is provided with oil blanket end cover (3), its characterized in that:
an oil supply interface (31) is arranged on the oil seal end cover (3), and a piston mechanical starting assembly (5) is also arranged in the oil seal end cover (3); the oil supply interface (31) is in transmission connection with the piston mechanical starting assembly (5), and when the oil supply interface (31) is used for initially supplying oil, the piston mechanical starting assembly (5) is driven by passive mechanical lifting to move the piston assembly (4), and then the piston assembly (4) is pushed to move by matching with oil conveyed by the oil supply interface (31);
the mechanical starting assembly (5) of the piston comprises a starting oil cavity (51) formed in an oil seal end cover (3), the starting oil cavity (51) is communicated with an oil supply interface (31), an expansion cavity (52) is formed in one end, close to an accumulator cylinder body (1), of the starting oil cavity (51), a through hole (53) communicated with the inside of the accumulator cylinder body (1) is formed in the periphery of the bottom of the expansion cavity (52), a mechanical jacking assembly is arranged in the starting oil cavity (51), the mechanical jacking assembly comprises a sealing seat (54) arranged in the starting oil cavity (51) in a sliding mode, the bottom of the sealing seat (54) is vertically connected with a push rod (56), the push rod (56) penetrates through the oil seal end cover (3) and extends into the inner cavity of the accumulator cylinder body (1), a tension spring (55) is connected between the sealing seat (54) and the bottom of the expansion cavity (52), and the elasticity of the tension spring (55) is used for driving the sealing seat (54) to be attached to the bottom of the expansion cavity (52).
2. The piston accumulator with adjustable compound stroke according to claim 1, characterized in that a transition compensation mechanism (57) is further arranged on the oil seal end cover (3), the transition compensation mechanism (57) is in transmission connection with a mechanical jacking component, when the mechanical jacking component passively drives the piston component (4) to move, the transition compensation mechanism (57) automatically performs space compensation on a cavity formed between the piston component (4) and the accumulator cylinder (1) when the piston component (4) moves, so that the cavity formed between the piston component (4) and the accumulator cylinder (1) is full of oil.
3. A piston accumulator with adjustable compound stroke according to claim 2, characterized in that the transition compensation mechanism (57) comprises a sleeve seat (571) fixed on the inner side of the oil seal end cover (3), a sealing sleeve (572) is embedded in the sleeve seat (571) in a sliding manner, and the top end of the ejector rod (56) is connected with the inner top of the sealing sleeve (572).
4. A compound stroke-adjustable piston accumulator according to claim 1, characterized in that the accumulator cylinder (1) comprises a joint seat (11), a cylinder (12) is arranged on one side of the joint seat (11), and an oil cylinder (13) is arranged on the other side of the joint seat (11).
5. The piston accumulator with the adjustable composite stroke according to claim 4, wherein the air seal end cover (2) is arranged at the end of the cylinder (12), an air supply valve (21) is arranged on the air seal end cover (2), and the oil seal end cover (3) is arranged at the end of the oil cylinder (13).
6. The piston accumulator with adjustable compound stroke according to claim 4, wherein threaded interfaces (111) are symmetrically arranged on two sides of the joint seat (11), and the cylinder (12) and the oil cylinder (13) are spirally connected to two ends of the joint seat (11) through the threaded interfaces (111).
7. The piston accumulator with adjustable compound stroke according to claim 4, wherein connecting flanges (112) are further rotatably sleeved on two sides of the joint seat (11), fixing flanges (14) are rotatably arranged on the outer sides of the interfaces of the cylinder (12) and the oil cylinder (13), and the fixing flanges (14) are fixedly connected with the connecting flanges (112) through studs.
8. The piston accumulator with adjustable composite stroke according to claim 4, wherein the piston assembly (4) comprises an air cavity piston (42) and an oil cavity piston (43), the air cavity piston (42) is movably embedded in the cylinder (12), the oil cavity piston (43) is movably embedded in the oil cylinder (13), a plurality of support rods (41) are connected between the air cavity piston (42) and the oil cavity piston (43) in an annular array, and the support rods (41) movably penetrate through the joint seat (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310863718.2A CN116592004B (en) | 2023-07-14 | 2023-07-14 | Combined stroke-adjustable piston type energy accumulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310863718.2A CN116592004B (en) | 2023-07-14 | 2023-07-14 | Combined stroke-adjustable piston type energy accumulator |
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| CN116592004A CN116592004A (en) | 2023-08-15 |
| CN116592004B true CN116592004B (en) | 2023-11-03 |
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| CN202310863718.2A Active CN116592004B (en) | 2023-07-14 | 2023-07-14 | Combined stroke-adjustable piston type energy accumulator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118462668B (en) * | 2024-07-15 | 2024-10-01 | 宁波市特种设备检验研究院 | Combined piston type energy accumulator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3139600A1 (en) * | 1981-10-06 | 1983-04-21 | Gesellschaft für Hydraulik-Zubehör mbH, 6603 Sulzbach | Piston accumulator |
| DE102011009326A1 (en) * | 2011-01-18 | 2012-07-19 | Hydac Technology Gmbh | Hydropneumatic accumulator i.e. twin-piston accumulator, for emergency operation of hydraulic actuators, has attachment structure arranged on outer side of sealing element which is attached at inner wall of storage housing |
| CN203835821U (en) * | 2014-04-25 | 2014-09-17 | 宁波市巴克蓄能器技术有限公司 | Piston-type energy accumulator |
| CN104314527A (en) * | 2014-10-29 | 2015-01-28 | 胜利油田高原石油装备有限责任公司 | Hydraulic pumping unit with power-assisted cylinder and oil production method of hydraulic pumping unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8479774B2 (en) * | 2011-07-22 | 2013-07-09 | Benton Frederick Baugh | Accumulator with single direction seal |
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2023
- 2023-07-14 CN CN202310863718.2A patent/CN116592004B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3139600A1 (en) * | 1981-10-06 | 1983-04-21 | Gesellschaft für Hydraulik-Zubehör mbH, 6603 Sulzbach | Piston accumulator |
| DE102011009326A1 (en) * | 2011-01-18 | 2012-07-19 | Hydac Technology Gmbh | Hydropneumatic accumulator i.e. twin-piston accumulator, for emergency operation of hydraulic actuators, has attachment structure arranged on outer side of sealing element which is attached at inner wall of storage housing |
| CN203835821U (en) * | 2014-04-25 | 2014-09-17 | 宁波市巴克蓄能器技术有限公司 | Piston-type energy accumulator |
| CN104314527A (en) * | 2014-10-29 | 2015-01-28 | 胜利油田高原石油装备有限责任公司 | Hydraulic pumping unit with power-assisted cylinder and oil production method of hydraulic pumping unit |
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| CN116592004A (en) | 2023-08-15 |
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