CN104358718B - A kind of piston accumulator - Google Patents
A kind of piston accumulator Download PDFInfo
- Publication number
- CN104358718B CN104358718B CN201410651483.1A CN201410651483A CN104358718B CN 104358718 B CN104358718 B CN 104358718B CN 201410651483 A CN201410651483 A CN 201410651483A CN 104358718 B CN104358718 B CN 104358718B
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- piston
- face
- cylinder body
- seal ring
- thrust
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- 238000007789 sealing Methods 0.000 claims abstract description 51
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 20
- 239000003921 oil Substances 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 239000010720 hydraulic oil Substances 0.000 description 8
- 238000004146 energy storage Methods 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 206010020852 Hypertonia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010959 steel Substances 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
-
- 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
-
- 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
- F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
-
- 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
- F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
- F15B2201/312—Sealings therefor, e.g. piston rings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Devices (AREA)
Abstract
The present invention provides a kind of piston accumulator, including cylinder body, cylinder body is equipped with piston, cylinder body front end is equipped with drive end bearing bracket structure, drive end bearing bracket structure includes moving the top briquetting being installed at cylinder body front port along the longitudinal direction and being securely fitted in the thrust block of cylinder body front end, described piston, inboard wall of cylinder block and described top briquetting surround the respective cavities in cylinder body, the edge face sealing member that drive end bearing bracket structure is contained between described top briquetting and thrust block by locating clip seals assembling with inboard wall of cylinder block, edge face sealing member has and the outer radial periphery face of inboard wall of cylinder block sealing top press-fit, top briquetting has the top pressure surface of the rear end face top press-fit with edge face sealing member forward, described thrust block has the thrust surface that the front end face thrust with edge face sealing member backwards coordinates.High-pressure fluid in respective cavities acts on the briquetting of top, and end-face seal ring pressurized realizes end face seal, and sealing property is relatively reliable.
Description
Technical field
The present invention relates to a kind of piston accumulator.
Background technology
In supertension, breaker in extra high voltage, select hydraulic actuating mechanism more, the actuating mode of hydraulic actuating mechanism is the holding of normal high pressure, snap action, this is accomplished by an energy-storage travelling wave tube and carrys out the energy needed for long-time storage actuating, stored energy form has two kinds, and one is to use compression spring energy storage, and another kind is to use compressed gas energy storage, the mode of compression spring energy storage also exists spring and is produced the possibility of creep for a long time by compression, and the mode of compressed gas energy storage also exists the possibility of gas leakage.The hydraulic actuating mechanism modes using compressed gas energy storage at present to big operating work more.
The accumulator of the compressed gas energy storage that hydraulic system is conventional is different from the mode of gas barrier according to hydraulic oil, there are gasbag isolation formula and isolated two kinds of piston, for ensureing the operation requirement of chopper, accumulator in hydraulic actuating mechanism often need to be precharged with the gases at high pressure of certain pressure, to improve its work efficiency, so piston separated accumulator need to be used.
As Chinese invention patent description that Authorization Notice No. is CN100376807C discloses a kind of piston accumulator, it includes vertically extending cylinder body, the upper and lower two ends of cylinder body are respectively fitted with, bottom end cover, two two end cap realize the sealing assembling of itself and cylinder body respectively by the way of radial seal, in cylinder body, move back and forth sealing be along the vertical direction equipped with piston, inner chamber of cylinder block is divided into air cavity above and is positioned at the oil cylinder of lower section by piston, upper end cover is provided with and connects with air cavity for the charge valve being filled with gases at high pressure in air cavity, bottom end cover is provided with and connects with oil pocket in oil pocket, inject the fuel feed hole of hydraulic oil.During use, gases at high pressure being injected air cavity, then inject hydraulic oil in oil pocket, along with in oil pocket, oil pressure raises, promote piston to move to upper end cover one side, gas pressurized air pressure becomes big, until it reaches new balance, it is achieved accumulation of energy.When hydraulic actuating mechanism works, hydraulic oil discharges pushing mechanical device acting, high pressure gas expansion, promotes piston to move, keeps the operating pressure of hydraulic system.
In above-mentioned piston accumulator, together with the end cap corresponding with air cavity is directly securely fitted in cylinder body by fixing screw, and between corresponding end cap and cylinder body, it is provided with radial direction seal ring to realize the sealing assembling of corresponding end cap.But this radial direction seal ring relies primarily on radial direction seal ring self top and is pressed on inboard wall of cylinder block to form sealing, this sealing structure, when running into gases at high pressure, is easily impacted by gases at high pressure, and radial direction seal ring forms gap with inboard wall of cylinder block, in turn result in seal failure, affect the normal sealing to end cap.
Summary of the invention
The present invention provides a kind of piston accumulator, the technical problem of seal failure easily occurs when running into gases at high pressure to solve to rely on radial direction seal ring self top to be pressed on inboard wall of cylinder block the sealing structure formed in prior art.
nullThe technical scheme of piston accumulator provided by the present invention is: piston accumulator，Including the cylinder body extended along the longitudinal direction，Cylinder body moves back and forth along the longitudinal direction and is equipped with piston，Cylinder body front end is equipped with drive end bearing bracket structure，Described drive end bearing bracket structure includes moving the top briquetting being installed at cylinder body front port along the longitudinal direction and being securely fitted in the thrust block of cylinder body front end，Described piston、Inboard wall of cylinder block and described top briquetting surround the respective cavities in cylinder body，The edge face sealing member that drive end bearing bracket structure is contained between described top briquetting and thrust block by locating clip seals assembling with inboard wall of cylinder block，Edge face sealing member has and the outer radial periphery face of inboard wall of cylinder block sealing top press-fit，Top briquetting has the top pressure surface of the rear end face top press-fit with edge face sealing member forward，Described thrust block has the thrust surface that the front end face thrust with edge face sealing member backwards coordinates.
The front portion of described top briquetting is provided with the boss extended forward, boss has outer radial periphery face and step surface forward, the step surface of boss is the top pressure surface of described top briquetting, described edge face sealing member is the end-face seal ring that positioning sleeve is contained on boss, the laminating corresponding with the outer radial periphery face of described boss of the inner peripheral surface of the endoporus of end-face seal ring.
Described thrust block is provided with the through hole extended along the longitudinal direction, and the front end of described boss extends forwardly in the through hole of thrust block and coincide inserting with the inner hole wall of through hole.
Described end-face seal ring includes primary seal circle, primary seal circle radially distributed inside and outside respectively correspondence be disposed with two the first back-up rings, the radially inner side at the first back-up ring of inner side there also is provided the second back-up ring.
Inner chamber of cylinder block is divided into oil pocket and air cavity by described piston, air cavity is positioned at the front of oil pocket, the described respective cavities surrounded by piston, inboard wall of cylinder block and described top briquetting is described air cavity, and described drive end bearing bracket structure is provided with the inflatable structure connected with described air cavity.
On the outer peripheral face of described piston, coaxial sleeve seals, equipped with moving with cylinder body, the radial direction seal ring coordinated, it is provided with the thrust surface that coordinate spacing with described radial direction seal ring thrust in described radial direction seal ring rear on piston, described cylinder body is disposed with, in described radial direction seal ring front, the stage clip extended along the longitudinal direction, top, stage clip front end is pressed on fixing spring base, fixing spring base is in fore-and-aft direction and the assembling of described piston location, top, stage clip rear end press-fits on the movable spring seat fitting over guiding movement along the longitudinal direction, the rear end of movable spring seat have under the effect of stage clip backward radial direction seal ring described in pushing tow to coordinate location to clamp the pushing tow face of described radial direction seal ring with described thrust surface.
It is convexly equipped with the guiding extended the most forward on the leading flank of described piston and connects post, described movable spring seat guiding movement is sleeved on described guiding and connects on post, described fixing spring socket sleeve is contained in described guiding and connects on post, and fixing spring base and guiding connects to be provided with between post and realizes described fixing spring base and piston positions the collar of assembling in the longitudinal direction.
Described radial direction seal ring includes being sequentially overlapped the multiple seal washers being sleeved on described piston along the longitudinal direction.
The invention has the beneficial effects as follows: in piston accumulator provided by the present invention, high-pressure fluid in the respective cavities surrounded by thrust block, piston and cylinder body applies top pressure active force forward to top briquetting, thrust block is directly fixedly installed on cylinder body front end, make edge face sealing member by pushing up briquetting and thrust block is fixedly clamped, the outer peripheral face of edge face sealing member seals assembling with inboard wall of cylinder block, finally realizes the sealing assembling of drive end bearing bracket structure and cylinder body.The top briquetting pressed by the high-pressure fluid top of respective cavities due to end face seal collar member provided by the present invention holds out against, the pressure in high-pressure fluid in respective cavities is the highest, the sealing effectiveness of end-face seal ring is the best, not havinging and cause the problem of seal failure because of fluid hypertonia, sealing property is relatively reliable.
Further, edge face sealing member uses the structure of end-face seal ring, end-face seal ring correspondence is sleeved on boss, and end-face seal ring location and installation is more convenient.
nullFurther，Fixing spring base assembles with piston location in the longitudinal direction，Positioning action by fixing spring base，Stage clip pushes up pressure movable spring seat backward，Thrust surface forward on the pushing tow face backward of movable spring seat and piston coordinates realization to clamp the location of radial direction seal ring，After radial direction seal ring is worn，Movable spring seat can push up pressure radial direction seal ring，Radial direction seal ring is promoted to be compressed compensating，Ensure its sealing property，And，By selecting suitable stage clip，Movable spring seat can be adjusted to the top pressure active force that radial direction seal ring applies，The decrement of radial direction seal ring can be controlled，On the premise of ensureing sealing property，Frictional force can be effectively reduced，Ensure the normal mobile and response speed of piston，So，The most effectively expand the range of choice of radial direction seal ring，Reduce the selection standard of radial direction seal ring，Decrease seal piston apparatus designs and produces cost.Further, stage clip is assembled together with piston by fixing spring base, and after selected stage clip, the decrement of stage clip self changes not quite in piston reciprocating moving process, can effectively extend the service life of stage clip.
Further, the leading flank of piston is convexly equipped with guiding and connects post, connect post by this this guiding and realize movable spring seat guides the axial location guided and to fixing spring base, design simple in construction, it is simple to processing and fabricating and assembling.
Accompanying drawing explanation
Fig. 1 is the structural representation of the accumulator being provided with seal piston apparatus provided by the present invention；
Fig. 2 is enlarged drawing at A in Fig. 1；
Fig. 3 is enlarged drawing at B in Fig. 1.
Detailed description of the invention
nullAs shown in Figure 1 to Figure 3，A kind of embodiment of the accumulator being provided with seal piston apparatus，Accumulator in this embodiment includes the cylinder body 3 extended along the longitudinal direction，Cylinder body 3 is provided with sealing piston structure，Seal piston structure to include moving the piston 2 that inner chamber of cylinder block is divided into oil pocket 30 and air cavity 11 being assemblied in cylinder body 3 along the longitudinal direction，On the outer peripheral face of piston 2, coaxial sleeve seals, equipped with moving with cylinder body 3, the radial direction seal ring 32 coordinated，It is provided with the thrust surface that coordinate spacing with the thrust of described radial direction seal ring 32 in described radial direction seal ring 32 rear on piston 2，In the present embodiment，It is convexly equipped with the guiding extended the most forward on the leading flank of piston 2 and connects post 31，It is set with, on post 31, the stage clip 14 extended along the longitudinal direction guiding to connect，Top, stage clip 14 front end is pressed on fixing spring base 13，Fixing spring base 13 is connected post 31 location assembling by collar 12 with guiding at fore-and-aft direction，And top, stage clip 14 rear end press-fits on the movable spring seat 15 fitting over guiding movement along the longitudinal direction，Movable spring seat 15 guiding movement is sleeved on described guiding and connects on post，Movable spring seat 15 is provided with the stage clip pilot hole being sleeved on described stage clip 14 extended back by front end face，The rear end of described stage clip 14 coordinates with pushing tow at the bottom of the hole of described stage clip pilot hole，The radial dimension of the outer peripheral face of movable spring seat 15 is less than the radial dimension of described radial direction seal ring herein，The outer peripheral face of movable spring seat 15 front portion is in the pyramidal structure tapered into by backward front radial dimension，The rear end of movable spring seat 15 have under the effect of stage clip 14 backward radial direction seal ring 32 described in pushing tow to coordinate location to clamp the pushing tow face of described radial direction seal ring 32 with described thrust surface.
In the present embodiment, the leading flank of piston 2 is provided with step surface positioning step forward, and described radial direction seal ring 32 coaxial positioning sleeve is contained on described positioning step, and the step surface of this positioning step is described thrust surface.
Radial direction seal ring in the present embodiment includes along being sequentially overlapped the multiple seal washers being sleeved on described piston along the longitudinal direction, multiple seal washers herein specifically include interlaced the first seal washer 17 and the second seal washer 19 being superimposed, and are also correspondingly arranged on the 3rd seal washer 20 and the 4th seal washer 18 in the both sides up and down of first, second seal washer.
In the present embodiment, the air cavity 11 separated by piston 2 is positioned at the front of oil pocket 30, before and after cylinder body 3, two ends correspondence seals and is equipped with drive end bearing bracket structure and rear end cover structure, drive end bearing bracket structure is provided with the inflatable structure for inflating to described air cavity, and rear end cover structure 16 is provided with the oil transportation hole for oiling in described oil pocket.
nullDrive end bearing bracket structure herein includes moving the top briquetting 7 being installed at cylinder body front port along the longitudinal direction and being securely fitted in the thrust block 6 of cylinder body front end，Top briquetting 7、Piston 2 and inboard wall of cylinder block surround described air cavity 11，Thrust block 6 is provided with the through hole 61 extended along the longitudinal direction，Through hole 61 is cascaded surface shoulder hole backwards，The front portion of top briquetting 7 is provided with the boss 71 extended forward，Boss 71 has the path section with described through hole and coincide the outer peripheral face of inserting and step surface forward，The step surface of described boss 71、The outer peripheral face of boss、The cascaded surface of shoulder hole and the inner peripheral surface of cylinder body 3 surround groove structure，Groove structure accommodates the end-face seal ring as edge face sealing member，End face，Sealing ring positioning sleeve is contained on described boss，The step surface of boss 71 is the top pressure surface forward of top briquetting 7，The cascaded surface of shoulder hole is the thrust surface backwards of thrust block 6，The thrust surface of thrust block 7 coordinates with the front end face thrust of edge face sealing member，Push up the top pressure surface of briquetting then with the rear end face top press-fit of edge face sealing member，Top briquetting and thrust block coordinate realization to grip edge face sealing member，And end-face seal ring has and the outer radial periphery face of inboard wall of cylinder block sealing top press-fit，Drive end bearing bracket structure seals assembling by end-face seal ring with cylinder body.Herein, the inflatable structure being arranged on the briquetting of described top includes the passage being arranged on the briquetting of described top along the longitudinal direction, passage includes the front extension diameter section being sequentially arranged along the longitudinal direction, middle necking segment and rear extension diameter section, front extension diameter section is disposed with housing screw 10 and sealed steel ball 5 along the longitudinal direction, at the open rearward end of rear extension diameter section, it is provided with inflation check valve 4, at the front port of front extension diameter section, also adds spiral plug 9.
Specifically, end-face seal ring herein includes primary seal circle 23, primary seal circle 23 radially distributed inside and outside respectively correspondence be disposed with two the first back-up rings 21, and there also is provided the second back-up ring 22 in the inner side of the first back-up ring 21 of inner side.
Time specifically used, in air cavity 11, high pressure nitrogen is washed away by inflatable structure, high pressure nitrogen belongs to noble gas, the corrosion to inner components of other gases or moisture content can be avoided, high pressure nitrogen is encapsulated in air cavity 11, high pressure nitrogen acts on the briquetting 7 of top, and top briquetting 7 compresses forward end-face seal ring to realize the sealing assembling of drive end bearing bracket structure and cylinder body.After closure main gas charge structure, in oil pocket 30, hydraulic oil is inputted by the oil transportation hole on rear end cover structure 16 by high-pressure oil pump, piston 2 is promoted to move forward, compression high pressure nitrogen stores energy, after reaching to set pressure, high-pressure oil pump stops suppressing, hydraulic oil applies the active force on the piston 2 actual with high pressure nitrogen of active force on the piston 2 and keeps balance, when hydraulic actuating mechanism action, hydraulic oil discharges pushing mechanical device acting, high pressure nitrogen expands, and acts in hydraulic system by piston, remains to keep the operating pressure of hydraulic system.
In the present embodiment, owing to radial direction seal ring is compressed by stage clip 14 by movable spring seat 15 and controlled its decrement by stage clip 14, the frictional force making radial direction seal ring keeps stable, and, make movable spring seat 15 can compress radial direction seal ring by stage clip 14, so can realize the compensation to the radial direction seal ring after abrasion, such that it is able to the sealing property of radial direction seal ring is effectively ensured.
In the present embodiment, inputting gases at high pressure by inflatable structure in air cavity, these gases at high pressure will act on the briquetting of top, realize the location to top briquetting, meanwhile, gases at high pressure the pressure that top briquetting is applied is remained so that the sealing property of end-face seal ring is relatively reliable.
In above-described embodiment, edge face sealing member uses the end-face seal ring being sleeved on boss, and in other embodiments, edge face sealing member can also use gasket seal, and now, gasket seal is by pushing up briquetting and thrust block clamping and positioning.Further, equally inflatable structure is opened in drive end bearing bracket structure, at this time, it may be necessary to offer corresponding through hole in the air-filled pore corresponding position with top briquetting of gasket seal, it is ensured that normally inflate.
In above-described embodiment, top briquetting, piston and inboard wall of cylinder block surrounding air cavity, the gases at high pressure in air cavity act on the briquetting of top to realize pressing solidly the top of end-face seal ring determining.In other embodiments, it is also possible to surrounded oil pocket by top briquetting, piston and inboard wall of cylinder block, now, can be acted on the briquetting of top by the hydraulic oil in oil pocket to realize the top of end-face seal ring is pressed solidly determining, it is ensured that the sealing effectiveness of sealing ring.
In above-described embodiment, end-face seal ring uses the combination of multiple sealing rings to constitute, and in other embodiments, end-face seal ring can also use the sealing ring of single guarantee sealing effectiveness.
In above-described embodiment, assemble by guiding the location connecting the fixing spring base of post realization and piston, in other embodiments, it is also possible to by other means or structure realizes the location assembling with piston of the fixing spring base as being directly assemblied on piston by screw-tightened attachment structure by fixing spring base.
In above-described embodiment, radial direction seal ring uses multiple seal washers being sequentially arranged along the longitudinal direction to combine, and so can select dissimilar, the seal washer of size as required, meet sealing property requirement.
Claims (8)
1. piston accumulator, including the cylinder body extended along the longitudinal direction, cylinder body moves back and forth along the longitudinal direction and is equipped with piston, cylinder body front end is equipped with drive end bearing bracket structure, it is characterized in that: described drive end bearing bracket structure includes moving the top briquetting being installed at cylinder body front port along the longitudinal direction and being securely fitted in the thrust block of cylinder body front end, described piston, inboard wall of cylinder block and described top briquetting surround the respective cavities in cylinder body, the edge face sealing member that drive end bearing bracket structure is contained between described top briquetting and thrust block by locating clip seals assembling with inboard wall of cylinder block, edge face sealing member has and the outer radial periphery face of inboard wall of cylinder block sealing top press-fit, top briquetting has the top pressure surface of the rear end face top press-fit with edge face sealing member forward, described thrust block has the thrust surface that the front end face thrust with edge face sealing member backwards coordinates.
Piston accumulator the most according to claim 1, it is characterized in that: the front portion of described top briquetting is provided with the boss extended forward, boss has outer radial periphery face and step surface forward, the step surface of boss is the top pressure surface of described top briquetting, described edge face sealing member is the end-face seal ring that positioning sleeve is contained on boss, the laminating corresponding with the outer radial periphery face of described boss of the inner peripheral surface of the endoporus of end-face seal ring.
Piston accumulator the most according to claim 2, it is characterised in that: described thrust block is provided with the through hole extended along the longitudinal direction, and the front end of described boss extends forwardly in the through hole of thrust block and coincide inserting with the inner hole wall of through hole.
Piston accumulator the most according to claim 2, it is characterized in that: described end-face seal ring includes primary seal circle, primary seal circle radially distributed inside and outside respectively correspondence be disposed with two the first back-up rings, the radially inner side at the first back-up ring of inner side there also is provided the second back-up ring.
Piston accumulator the most as claimed in any of claims 1 to 4, it is characterized in that: inner chamber of cylinder block is divided into oil pocket and air cavity by described piston, air cavity is positioned at the front of oil pocket, the described respective cavities surrounded by piston, inboard wall of cylinder block and described top briquetting is described air cavity, and described drive end bearing bracket structure is provided with the inflatable structure connected with described air cavity.
Piston accumulator the most according to claim 5, it is characterized in that: on the outer peripheral face of described piston, coaxial sleeve seals, equipped with moving with cylinder body, the radial direction seal ring coordinated, it is provided with the thrust surface that coordinate spacing with described radial direction seal ring thrust in described radial direction seal ring rear on piston, described cylinder body is disposed with, in described radial direction seal ring front, the stage clip extended along the longitudinal direction, top, stage clip front end is pressed on fixing spring base, fixing spring base is in fore-and-aft direction and the assembling of described piston location, top, stage clip rear end press-fits on the movable spring seat fitting over guiding movement along the longitudinal direction, the rear end of movable spring seat have under the effect of stage clip backward radial direction seal ring described in pushing tow to coordinate location to clamp the pushing tow face of described radial direction seal ring with described thrust surface.
Piston accumulator the most according to claim 6, it is characterized in that: be convexly equipped with the guiding extended the most forward on the leading flank of described piston and connect post, described movable spring seat guiding movement is sleeved on described guiding and connects on post, described fixing spring socket sleeve is contained in described guiding and connects on post, and fixing spring base and guiding connects to be provided with between post and realizes described fixing spring base and piston positions the collar of assembling in the longitudinal direction.
Piston accumulator the most according to claim 6, it is characterised in that: described radial direction seal ring includes being sequentially overlapped the multiple seal washers being sleeved on described piston along the longitudinal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410651483.1A CN104358718B (en) | 2014-11-17 | 2014-11-17 | A kind of piston accumulator |
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| CN201410651483.1A CN104358718B (en) | 2014-11-17 | 2014-11-17 | A kind of piston accumulator |
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| CN104358718A CN104358718A (en) | 2015-02-18 |
| CN104358718B true CN104358718B (en) | 2016-11-23 |
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| CN112683551B (en) * | 2020-12-28 | 2022-10-11 | 武汉元丰汽车电控系统股份有限公司 | Detection method and device for ABS energy accumulator and storage medium |
| CN113217482B (en) * | 2021-04-09 | 2022-03-11 | 燕山大学 | Piston type energy accumulator with built-in one-way valve |
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| DE2019407A1 (en) * | 1970-04-22 | 1971-11-04 | Baumgarten Hydrotech | Separating piston for hydropneumatic energy storage |
| DE2222416A1 (en) * | 1972-05-06 | 1973-11-08 | Kessler Nabenfab Alfing | HYDROPNEUMATIC ACCUMULATOR |
| CN102182714A (en) * | 2011-06-08 | 2011-09-14 | 何学才 | Gas and oil non-isolated mixed type piston energy accumulator |
| CN202194870U (en) * | 2011-06-28 | 2012-04-18 | 四川金星石油化工机械设备有限公司 | Piston accumulator |
| CN202707642U (en) * | 2012-08-06 | 2013-01-30 | 奉化市朝日液压有限公司 | Adjustable travel piston type energy accumulator |
| CN204327604U (en) * | 2014-11-17 | 2015-05-13 | 河南平高电气股份有限公司 | Piston accumulator |
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| CN104358718A (en) | 2015-02-18 |
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