CN201155494Y - High pressure piston type energy accumulator - Google Patents
High pressure piston type energy accumulator Download PDFInfo
- Publication number
- CN201155494Y CN201155494Y CNU2007200925046U CN200720092504U CN201155494Y CN 201155494 Y CN201155494 Y CN 201155494Y CN U2007200925046 U CNU2007200925046 U CN U2007200925046U CN 200720092504 U CN200720092504 U CN 200720092504U CN 201155494 Y CN201155494 Y CN 201155494Y
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- Prior art keywords
- piston
- circular groove
- circular
- opening
- high pressure
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- Expired - Lifetime
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Abstract
The utility model discloses a high-pressure piston accumulator, which is provided with a bucket cylinder; wherein, both ends of the bucket cylinder are provided with openings; one opening is provided with a bottom head, while the other opening is provided with a gas precharge valve. A sliding piston is arranged in the cylinder chamber; wherein, the contacting circumference of the piston and the internal wall of the cylinder are provided with two parallel circular grooves which are respectively adjacent to the end faces at the two sides of the piston; each circular groove is provided with a sealing device. Each sealing device in the circular grooves consists of an O-shaped seal ring, two circular retainer rings and two sealing retainer rings, wherein, the O-shaped seal rings are hooped on the bottom parts of the circular grooves by the internal circumferences; the two circular retainer rings are respectively arranged outside the two end faces of the O-shaped seal rings; the sealing retainer ring are hooped on the external circumferences of the O-shaped seal rings; the internal circumferences of two circular retainer rings are hooped on the bottom parts of the circular grooves; the external end faces abut against the lateral walls of the circular grooves; the sealing retainer rings are hooped on the external circumferences of the O-shaped seal rings through the internal circumferences; the external circumferences of the sealing retainer rings and the circular retainer rings contact the internal wall of the cylinder.
Description
Technical field
The utility model relates to technical field of hydraulic, especially a kind of high pressure piston formula accumulator.
Background technique
Existing piston formula accumulator is to be made of the piston that is slidingly installed with in cylinder body and the cylinder body, the two ends of cylinder body are respectively equipped with inflation inlet and hydraulic fluid port, inflation inlet is inflated valve closure, sealed by bottom at the hydraulic fluid port that is not connected to the hydraulic system front-bank rotor housing, piston is isolated into two-part with cylinder body, a part is full of the pressurized gas of certain pressure, and such as nitrogen, another part can be full of hydraulic oil by hydraulic fluid port and hydraulic circuit UNICOM.When oil pressure in the cylinder body rises, hydraulic oil pushing tow piston motion pressurized gas, gas pressure raises, after gas pressure and system oil pressure balance, piston stops to move, therefore gas pressure can change with the variation of the pressure of the extraneous hydraulic circuit that hydraulic oil was communicated with in the accumulator, thus reach store and discharge hydraulic pressure can effect.The predominant use of piston accumulator has: 1, stored energy, release and release energy fast; 2, eliminate pulsation, the stable system pressure of hydraulic system (such as plunger pump); 3, the shock and vibration in the absorption liquid hydraulic circuit.
The existing piston accumulator problem that often runs in use has two: 1, the pressurized gas in the cylinder body air cavity are by the problem of the gap between piston and inboard wall of cylinder block to the oil pocket leakage; because piston need slide on inboard wall of cylinder block; therefore inboard wall of cylinder block and piston space is sealed into motive sealing; under the seal ring high pressure conditions that is adopted of existing accumulator cylinder inwall and piston space, when piston moves through regular meeting clamp-on the gap between cylinder body and the piston and overturn, distortion, extrusion-deformation even be torn, thereby influence its sealing effect.2, the shutoff end of the cylinder body air cavity of existing accumulator is plane gas lid, plane gas lid bearing capacity is relatively poor, and existing plane gas lid is split production with cylinder body, needs to use sealed member between plane gas lid and cylinder body, makes that its installation is cumbersome, sealing effect is also undesirable.Above problem makes existing accumulator working pressure lower, and using effect is relatively poor, is of limited application.
The model utility content
The purpose of this utility model is to provide that the Sealing between a kind of piston and cylinder body is difficult for clamp-oning, good airproof performance, high pressure piston formula accumulator that friction factor is little.
The technical solution of the utility model is: high pressure piston formula accumulator, has cylinder block, the two ends of cylinder block have opening, wherein an end opening is packaged with bottom, the other end is packaged with gas charging valve, be slidingly installed with piston in the cavity of cylinder body, offer two circular grooves arranged side by side on piston and the circumferential surface that inboard wall of cylinder block contacts, article two, circular groove is respectively near the piston end faces of both sides, be equipped with seal arrangement in each circular groove, seal arrangement in each circular groove is to be contained in O RunddichtringO on the bottom land of circular groove by the inner peripheral surface hoop, be divided into two annular retaining rings in the both ends of the surface outside of O RunddichtringO, the Sealing shield ring that hoop is contained on the O RunddichtringO outer circumferential face constitutes, the inner peripheral surface hoop of two annular retaining rings is contained on the bottom land of circular groove, the exterior edge face abuts against on the sidewall of circular groove, Sealing shield ring is contained on the O RunddichtringO outer circumferential face by the inner circumferential surface hoop, Sealing shield ring, the outer circumferential face of two annular retaining rings contacts with the inwall of cylinder body.
The dual-side of the outer circumferential face of Sealing shield ring is along being provided with the chamfering plane.
Cylinder block is integrally formed with the spherical end surface of outside protrusion in an end that is packaged with gas charging valve, and the top of spherical end surface has opening, and gas charging valve is encapsulated on the opening at spherical end surface top by link.
Be fixed with valve seat in the opening at spherical end surface top, gas charging valve is installed in the valve seat.
Set seal arrangement is a combined labyrinth and carbon gland between cylinder body of the present utility model and the piston, the Sealing shield ring and the annular retaining ring that O-ring seals are installed in the circular groove of piston and press O-ring seals from outside retaining, two annular retaining rings are divided into and the O RunddichtringO both ends of the surface outside, Sealing shield ring is contained on the O RunddichtringO outer circumferential face by the inner circumferential surface hoop, can stop that O-ring seals is squeezed between cylinder body and the piston, Sealing shield ring, the outer circumferential face of two annular retaining rings contacts with the inwall of cylinder body, bear and cylinder body between friction, Sealing shield ring, two annular retaining rings adopt modified Teflon, modification sealing material wear resistance is longer better working life, and the friction factor when piston of the present utility model is under high pressure moved is less and can keep high-caliber sealing.
In addition, cylinder body of the present utility model is provided with the shutoff end face of the spherical end surface of outside protrusion as air cavity in an end that is packaged with gas charging valve, because the bearing capacity of sphere is greater than the plane with diameter, therefore the bearing capacity of spherical end surface of the present utility model is better than the plate shaped gas lid of existing accumulator, the integrally formed making of this spherical end surface and cylinder body, the outer leakage seal of air cavity is born by gas charging valve, and do not need to add in addition sealing between gas lid and cylinder body, make stronger, the better tightness of cylinder body air cavity bearing capacity of the present utility model.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing of A portion among Fig. 1.
Embodiment
As shown in Figure 1, the utility model accumulator has the cylinder body 4 of tubular, one end of cylinder block 4 has opening, be packaged with bottom 1 on this opening, the other end transition of cylinder body 4 is a spherical end surface, the top of spherical end surface has opening, valve seat 5 is housed in the opening, valve seat 5 is fixed on the cylinder body 4 by nut 6, gas charging valve 7 is installed on the valve seat 5, be slidingly installed with piston 3 in the cavity of cylinder body 4, piston 3 is separated into air cavity and oil pocket with cylinder body 4 inside, offer two circular grooves arranged side by side 8 on piston 3 and the circumferential surface that cylinder body 4 inwalls contact, 9, article two, circular groove 8,9 respectively near piston 4 end faces of both sides, circular groove 8, O RunddichtringO 10 all is housed in 9, annular retaining ring 12,13, Sealing shield ring 11, O RunddichtringO 10, annular retaining ring 12,13 all are contained in circular groove 8 by the inner circumferential surface hoop, 9 bottom land, annular retaining ring 12,13 are divided into the both ends of the surface of O RunddichtringO 10 outside and abut against circular groove 8, on 9 the sidewall, Sealing shield ring 11 is contained on O RunddichtringO 10 outer circumferential faces by the inner circumferential surface hoop, Sealing shield ring 11, annular retaining ring 12,13 outer circumferential face contacts with the inwall of cylinder body.The dual-side of the outer circumferential face of Sealing shield ring 11 is along being provided with chamfering plane 14 to reduce friction.
Claims (4)
1, high pressure piston formula accumulator, has cylinder block, the two ends of cylinder block have opening, wherein an end opening is packaged with bottom, the other end is packaged with gas charging valve, be slidingly installed with piston in the cavity of cylinder body, offer two circular grooves arranged side by side on described piston and the circumferential surface that inboard wall of cylinder block contacts, article two, circular groove is respectively near the piston end faces of both sides, be equipped with seal arrangement in each circular groove, it is characterized in that: the seal arrangement in described each circular groove is to be contained in O RunddichtringO on the bottom land of circular groove by the inner peripheral surface hoop, be divided into two annular retaining rings in the both ends of the surface outside of O RunddichtringO, the Sealing shield ring that hoop is contained on the O RunddichtringO outer circumferential face constitutes, the inner peripheral surface hoop of two annular retaining rings is contained on the bottom land of circular groove, the exterior edge face abuts against on the sidewall of circular groove, Sealing shield ring is contained on the O RunddichtringO outer circumferential face by the inner circumferential surface hoop, Sealing shield ring, the outer circumferential face of two annular retaining rings contacts with the inwall of cylinder body.
2, high pressure piston formula accumulator according to claim 1 is characterized in that: the dual-side of the outer circumferential face of described Sealing shield ring is along being provided with the chamfering plane.
3, high pressure piston formula accumulator according to claim 1 and 2, it is characterized in that: described cylinder block is integrally formed with the spherical end surface of outside protrusion in an end that is packaged with gas charging valve, the top of spherical end surface has opening, and gas charging valve is encapsulated on the opening at spherical end surface top by link.
4, high pressure piston formula accumulator according to claim 3, it is characterized in that: be fixed with valve seat in the opening at described spherical end surface top, gas charging valve is installed in the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200925046U CN201155494Y (en) | 2007-11-05 | 2007-11-05 | High pressure piston type energy accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200925046U CN201155494Y (en) | 2007-11-05 | 2007-11-05 | High pressure piston type energy accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201155494Y true CN201155494Y (en) | 2008-11-26 |
Family
ID=40103277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200925046U Expired - Lifetime CN201155494Y (en) | 2007-11-05 | 2007-11-05 | High pressure piston type energy accumulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201155494Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278330A (en) * | 2010-06-09 | 2011-12-14 | 中国商用飞机有限责任公司 | Hydraulic device |
-
2007
- 2007-11-05 CN CNU2007200925046U patent/CN201155494Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278330A (en) * | 2010-06-09 | 2011-12-14 | 中国商用飞机有限责任公司 | Hydraulic device |
| CN102278330B (en) * | 2010-06-09 | 2015-05-13 | 中国商用飞机有限责任公司 | Hydraulic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Henan Huilong Precision Equipment Manufacturing Co., Ltd. Assignor: Henan Huilong Industrial Co., Ltd. Contract record no.: 2010410000140 Denomination of utility model: High-pressure piston type accumulator Granted publication date: 20081126 License type: Exclusive License Record date: 20101009 |
|
| EM01 | Change of recordation of patent licensing contract |
Change date: 20150711 Contract record no.: 2010410000140 Assignee after: Converge grand precision equipment manufacture limited company in Henan Province Assignee before: Henan Huilong Precision Equipment Manufacturing Co., Ltd. |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081126 |