CN106704586A - Sealing device for changing groove filling rate of sealing ring - Google Patents
Sealing device for changing groove filling rate of sealing ring Download PDFInfo
- Publication number
- CN106704586A CN106704586A CN201710112562.9A CN201710112562A CN106704586A CN 106704586 A CN106704586 A CN 106704586A CN 201710112562 A CN201710112562 A CN 201710112562A CN 106704586 A CN106704586 A CN 106704586A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- pressure
- sealing ring
- ring
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
-
- 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
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/50—Monitoring, detection and testing means for accumulators
- F15B2201/51—Pressure detection
Landscapes
- 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)
- Sealing Devices (AREA)
Abstract
The invention discloses a sealing device for changing the groove filling rate of a sealing ring. The sealing device comprises a cylinder body and a sealing piston arranged in the cylinder body. A sealing groove is formed in the face, in contact with the cylinder body, of the sealing piston. An X-type sealing ring, a check ring and multiple springs are arranged in the sealing groove, wherein the springs are arranged between the side wall of the sealing groove and the check ring. The check ring is in contact with the X-type sealing ring. A blind hole is formed in the center of the end face, corresponding to an opening of the cylinder body, of the sealing piston. The blind hole communicates with the sealing groove through a through hole. A through hole outlet is formed between the check ring and the X-type sealing ring. By the adoption of the sealing device, the airtightness between the piston and the cylinder body is adjusted by changing the groove filling rate.
Description
Technical field
The present invention relates to a kind of sealing device for changing sealing ring tankful rate.
Background technology
Accumulator is the energy storage device commonly used in Hydrauservo System, mainly as the supplementary energy of system, while can be with
Reduce fluid pulsation.And wherein piston accumulator is widely applied with simple structure, high reliability, but by
In the influence of sealing ring frictional resistance, cause bad dynamic performance, leak rate high.When hydraulic system does not work, it is desirable to which gases at high pressure are deposited
The storage long period is, it is necessary to improve Compress rate of sealing ring, tankful rate, but on the other hand, piston requires response high in motion, needs
Compress rate of sealing ring, tankful rate are reduced, with reducing friction resistance.Therefore a kind of sealing ring compression when piston is static is designed
Rate, tankful rate are high, and Compress rate of sealing ring, the device of tankful rate are reduced when dynamic just realistic meaning very much.
The content of the invention
Regarding to the issue above, the present invention provides a kind of sealing for changing sealing ring tankful rate for improving dynamic property and fills
Put.
To reach above-mentioned purpose, a kind of sealing device for changing sealing ring tankful rate of the invention, including one end is provided with
The cylinder body of opening and the sealing piston being arranged in cylinder body；
The sealing piston is provided with seal groove with cylinder body contact surface；Along cylinder body sealed end to openend in the seal groove
X-shaped sealing ring, back-up ring and some springs are disposed with axial direction；The spring original length is more than the groove side wall
With the spacing of back-up ring；
The end face center of the sealing piston corresponding with the cylinder body opening is provided with blind hole；The blind hole is close with described
Sealing groove is connected by through hole；The through hole outlet is arranged between the back-up ring and the X-shaped sealing ring；
When the pressure in the cylinder body of openend is less than spring force, the back-up ring is subject to the spring to promote axial direction to squeeze
Press the X-shaped sealing ring；The X-shaped sealing ring axial direction extrusion, the friction between the sealing piston and the cylinder body
Power increases；
When the pressure in the cylinder body of openend is more than spring force, the back-up ring compression spring, the X-shaped sealing ring
Axial extrusion amount reduces, and the frictional force between the sealing piston and the cylinder body reduces.
Preferably, the X-shaped sealing ring is viton seal ring, the X-shaped sealing ring is X-type glue bowl and/or rotation lip
Shape sealing ring.
Preferably, being provided with scavenging air valve on the sealed end of the cylinder body；It is fixedly connected on the sealed end inwall of the cylinder body
There is buffer unit.
Preferably, the buffer unit include the flexible member that is fixedly connected with the inboard wall of cylinder block of one end and with the bullet
The buffer board that the property element other end is fixedly connected.
Preferably, being additionally provided with pressure-display device on the cylinder body, the pressure-display device includes and the buffering
Pressure display unit that the pressure sensor that plate is fixedly connected is fixedly connected with the outer wall of cylinder block and with the pressure display unit
The indicator lamp of electrical connection；The pressure sensor is connected with pressure display unit communication；
The pressure sensor is used to detect the pressure in the cylinder body and the pressure value for detecting is converted to electric signal
Pass to the pressure display unit；
When the pressure display unit receives the electric signal of pressure sensor transmission, the pressure display unit is by electricity
Signal is converted into data signal, while controlling the indicator lamp to be opened and closed；
If the pressure value that the pressure display unit shows is more than predetermined value, the indicator lamp is opened；
If the pressure value that the pressure display unit shows is less than predetermined value, the indicator lamp is closed.
The present invention is not when hydraulic system works, and the tankful rate of sealing ring is high, increases sealing effectiveness；In hydraulic work system
When, the tankful rate reduction of sealing ring, the purpose of reducing friction resistance improves dynamic property, faster improves supplement hydraulic system energy
The speed in source.
Brief description of the drawings
Fig. 1 is sealing device entirety schematic cross-sectional view in the embodiment of the present invention 1；
Fig. 2 is accumulator application exemplary hydraulic schematic diagram in embodiment 2.
Specific embodiment
With reference to Figure of description, the present invention will be further described.
Embodiment 1
As shown in figure 1, a kind of sealing device for changing sealing ring tankful rate of the present embodiment, including one end is provided with opening
Cylinder body 1 and the sealing piston 2 that is arranged in cylinder body 1；
The sealing piston 2 is provided with seal groove with the contact surface of cylinder body 1；Along cylinder body sealed end to opening in the seal groove
End is disposed with X-shaped sealing ring 3, back-up ring 4 and some springs 5 on axial direction；The former length of the spring 5 is more than the sealing
The spacing of groove sidewall and back-up ring 4；
The be open end face center of the corresponding sealing piston 2 of the cylinder body 1 is provided with blind hole；The blind hole with it is described
Seal groove is connected by through hole；The through hole outlet is arranged between the back-up ring 4 and the X-shaped sealing ring 3；
When the pressure in openend cylinder body 1 is less than 5 elastic force of spring, the back-up ring 4 is subject to the impeller-hub of the spring 5
To the two ends of X-shaped sealing ring 3 are extruded, the special construction of the X-shaped sealing ring 3 makes the two ends of X-shaped sealing ring 3 close up deformation, makes
Its tankful rate is uprised, the frictional force increase between the sealing piston 2 and the cylinder body 1；
When the pressure in openend cylinder body 1 is more than 5 elastic force of spring, the compression spring 5 of the back-up ring 4, pressure extrusion
The whole end face of the X-shaped sealing ring 3, the pressure at the two ends of the X-shaped sealing ring 3 reduces, and the two ends of the X-shaped sealing ring 3 are axially received
Deflection reduction is closed up in extruding, makes its tankful rate step-down, and the frictional force between the sealing piston 2 and the cylinder body 1 reduces, and carries
High dynamic performance.
The present embodiment changes the frictional force between sealing piston and cylinder body by changing the tankful rate of sealing ring, improves close
The dynamic property of seal apparatus.
Embodiment 2
As shown in Fig. 2 the present embodiment sealing device is by taking the accumulator in hydraulic system as an example, including one end and hydraulic system
Pump discharge and servo valve inlet passage cylinder body 1 and the sealing piston 2 that is arranged in the middle part of cylinder body；
The side of the sealing piston 2 is provided with the fluid connected with hydraulic system, and opposite side is provided with gases at high pressure；It is described
Sealing piston 2 is provided with seal groove with the contact surface of cylinder body 1；In the seal groove along the sealed end of cylinder body 1 to openend axially on according to
It is secondary to be provided with X-shaped sealing ring 3, back-up ring 4 and some springs 5；The back-up ring 4 is slided with the cylinder body 1 and the seal groove and set
Put, the back-up ring 4 is contacted with the X-shaped sealing ring 3, the former length of the spring 5 is more than the groove side wall and back-up ring 4
Spacing；
The end face center that the sealing piston 2 is provided with fluid one end is provided with blind hole；It is provided with the blind hole and institute
State the aperture of seal groove connection；The small hole exits are arranged between the back-up ring 4 and the X-shaped sealing ring 3；
When hydraulic system does not work, to the lateral movement of X-shaped sealing ring 3 under the promotion of spring 5, back-up ring 4 is axially squeezed back-up ring 4
Pressure X-shaped sealing ring 3 two ends, the two ends of the X-shaped sealing ring 3 are squeezed and close up deformation, uprise its tankful rate, with cylinder body 1 and work
Plug 2 has more close contact, can reach raising sealing effectiveness；；
When hydraulic work system, system builds pressure, and high-voltage oil liquid enters back-up ring 4 and X-shaped sealing ring from the aperture in piston 2
Between 3, the compression spring 5 of back-up ring 4 is promoted, back-up ring 4 is separated with X-shaped sealing ring 3, and the whole end face of X-shaped sealing ring 3 is squeezed, X-type
The part that the two ends of sealing ring 3 are compressed axially is released, and reduces its tankful rate, the friction of motion drag reduction of sealing piston 2,
Dynamic property can be improved, the speed of supplement hydraulic pressure system energy can be faster improved.
The present embodiment is not when hydraulic system works, and the tankful rate of sealing ring is high, increases sealing effectiveness；In hydraulic system work
When making, the tankful rate reduction of sealing ring, reducing friction resistance improves dynamic property, faster improves supplement hydraulic pressure system energy
Speed.
Embodiment 3
Based on above-described embodiment, X-shaped sealing ring 3 described in the present embodiment is viton seal ring, and the X-shaped sealing ring 3 is X
Type glue bowl and/or rotating lip-type sealing ring；
The present embodiment fluorubber has prominent heat-resisting, oil resistance, glue bowl and rotating lip-type sealing ring, can significantly carry
Use time high.
Embodiment 4
Based on above-described embodiment, scavenging air valve is provided with the sealed end of cylinder body 1 described in the present embodiment；The cylinder body 1 it is close
Buffer unit is fixedly connected with end-blocking inwall；The buffer unit includes the bullet that one end is fixedly connected with the inwall of the cylinder body 1
Property element and the buffer board being fixedly connected with the flexible member other end；
Pressure-display device is additionally provided with the cylinder body 1, the pressure-display device includes being fixed with the buffer board
Pressure display unit and be electrically connected with the pressure display unit that the pressure sensor of connection is fixedly connected with the outer wall of the cylinder body 1
The indicator lamp for connecing；The pressure sensor is connected with pressure display unit communication；
The pressure sensor is used to detect the pressure in the cylinder body 1 and the pressure value for detecting is converted to electric signal
Pass to the pressure display unit；
When the pressure display unit receives the electric signal of pressure sensor transmission, the pressure display unit is by electricity
Signal is converted into data signal, while controlling the indicator lamp to be opened and closed；
If the pressure value that the pressure display unit shows is more than predetermined value, the indicator lamp is opened；
If the pressure value that the pressure display unit shows is less than predetermined value, the indicator lamp is closed.
The present embodiment changes gaseous species in cylinder body by setting scavenging air valve, while be provided with buffer unit, prevent because
Pressure crosses senior general's piston press to cylinder ends, while being additionally provided with the pressure that pressure-display device can be checked in cylinder body at any time
Value, while can be pointed out by indicator lamp when the pressure value in cylinder body is excessive, is prevented cylinder interior pressure excessive and system is caused to damage
Evil.
The principle that the present invention is used：Due to the special construction of X-shaped sealing ring 3, spring 5 promotes the extruding X-shaped sealing ring of back-up ring 4
Four end points of X-type are squeezed respectively and close up deformation makes the length of X-shaped sealing ring 3 increase and then increase and cylinder body 1 when 3
Between tankful rate, strengthen sealing；When elastic force of the pressure in cylinder body 1 more than spring 5, fluid is entered into seal groove,
Back-up ring 4 is separated with X-shaped sealing ring 3, simultaneously because the pressure of fluid averagely disperses the pressure at extruding, the two ends of X-shaped sealing ring 3 to become
Small, 3 four end points of X-shaped sealing ring close up deflection reduction, the tankful rate step-down of X-shaped sealing ring 3, X-shaped sealing ring 3 and cylinder body 1
Between frictional force diminish, improve piston dynamic property.The cross part of X-shaped sealing ring 3 is provided with connection four chambers of X-type
The then above-mentioned principle effect of cross through hole is more efficient.
More than, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto, any to be familiar with sheet
Those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in should all be covered
Within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should be defined by claim is defined.
Claims (5)
1. a kind of sealing device for changing sealing ring tankful rate, it is characterised in that：Including one end be provided with opening cylinder body and
It is arranged on the sealing piston in cylinder body；
The sealing piston is provided with seal groove with cylinder body contact surface；Along cylinder body sealed end to openend axial direction in the seal groove
On be disposed with X-shaped sealing ring, back-up ring and some springs；The spring original length is more than the groove side wall and gear
The spacing of circle；
The end face center of the sealing piston corresponding with the cylinder body opening is provided with blind hole；The blind hole and the seal groove
Connected by through hole；The through hole outlet is arranged between the back-up ring and the X-shaped sealing ring；
When the pressure in the cylinder body of openend is less than spring force, the back-up ring is subject to the spring to promote axial compression institute
State X-shaped sealing ring；The X-shaped sealing ring axial direction extrusion, the frictional force between the sealing piston and the cylinder body increases
Greatly；
When the pressure in the cylinder body of openend is more than spring force, the back-up ring compression spring, the X-shaped sealing ring axial direction
Extrusion amount reduces, and the frictional force between the sealing piston and the cylinder body reduces.
2. as claimed in claim 1 a kind of sealing device for changing sealing ring tankful rate, it is characterised in that：The X-type is close
Seal is viton seal ring, and the X-shaped sealing ring is X-type glue bowl and/or rotating lip-type sealing ring.
3. as claimed in claim 1 a kind of sealing device for changing sealing ring tankful rate, it is characterised in that：The cylinder body
Scavenging air valve is provided with sealed end；Buffer unit is fixedly connected with the sealed end inwall of the cylinder body.
4. as claimed in claim 3 a kind of sealing device for changing sealing ring tankful rate, it is characterised in that：The buffering dress
Put the flexible member being fixedly connected with the inboard wall of cylinder block including one end and be fixedly connected with the flexible member other end it is slow
Punching.
5. as claimed in claim 4 a kind of sealing device for changing sealing ring tankful rate, it is characterised in that：On the cylinder body
Be additionally provided with pressure-display device, the pressure-display device include the pressure sensor being fixedly connected with the buffer board and
Pressure display unit that the outer wall of cylinder block is fixedly connected and the indicator lamp electrically connected with the pressure display unit；The pressure is passed
Sensor is connected with pressure display unit communication；
The pressure sensor is used to detect the pressure in the cylinder body and the pressure value for detecting is converted to electric signal transmission
To the pressure display unit；
When the pressure display unit receives the electric signal of pressure sensor transmission, the pressure display unit is by electric signal
Data signal is converted into, while controlling the indicator lamp to be opened and closed；
If the pressure value that the pressure display unit shows is more than predetermined value, the indicator lamp is opened；
If the pressure value that the pressure display unit shows is less than predetermined value, the indicator lamp is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710112562.9A CN106704586B (en) | 2017-02-28 | 2017-02-28 | For changing the sealing device of sealing ring tankful rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710112562.9A CN106704586B (en) | 2017-02-28 | 2017-02-28 | For changing the sealing device of sealing ring tankful rate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106704586A true CN106704586A (en) | 2017-05-24 |
| CN106704586B CN106704586B (en) | 2018-04-10 |
Family
ID=58917608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710112562.9A Active CN106704586B (en) | 2017-02-28 | 2017-02-28 | For changing the sealing device of sealing ring tankful rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106704586B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322871A (en) * | 2018-11-30 | 2019-02-12 | 湖南协力液压有限公司 | A kind of hydraulic cylinder that can automatically reset |
| CN109630497A (en) * | 2018-11-30 | 2019-04-16 | 湖南协力液压有限公司 | A kind of preload sealing fluid cylinder pressure |
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| GB736279A (en) * | 1952-12-06 | 1955-09-07 | Luebecker Kaeltemaschinen G M | Improvements in piston and piston-rod packings, more particularly for high pressures |
| US3315972A (en) * | 1963-10-26 | 1967-04-25 | Bofors Ab | Sealing element for sealing two relatively movable members against each other |
| CN2509383Y (en) * | 2001-08-15 | 2002-09-04 | 南京奥亿达液压气动技术有限公司 | Reciprocating self-reversing seal piston apparatus |
| DE10207181A1 (en) * | 2001-11-05 | 2003-05-15 | Continental Teves Ag & Co Ohg | Pressure reservoir for electrohydraulic braking systems, consists of cylinder with piston with long skirt and sealing rings trapping high-pressure gas |
| CN1776262A (en) * | 2004-11-16 | 2006-05-24 | 索奈克斯工业有限公司 | Torque converter clutch apply valve and improved automatic transinission for motov vehicle, and method for restoring its hydraulic integraty |
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| CN101566207A (en) * | 2008-04-23 | 2009-10-28 | 北京纽希液压技术研究所 | Hydraulic buffer |
| CN101936312A (en) * | 2010-09-15 | 2011-01-05 | 上海汇益控制系统股份有限公司 | High-pressure piston type accumulator |
| JP2014105876A (en) * | 2012-11-28 | 2014-06-09 | Hoerbiger Kompressortechnik Holding Gmbh | Seal device for sealing reciprocation piston rod of piston compressor |
| CN103946560A (en) * | 2011-11-14 | 2014-07-23 | 贺德克技术有限公司 | Gas cylinder, in particular high-pressure gas cylinder |
| CN104132131A (en) * | 2013-05-04 | 2014-11-05 | 徐州凯龙矿山科技开发有限公司 | Novel hydraulic cylinder silicon rubber sealing ring structure |
| CN204357800U (en) * | 2014-11-17 | 2015-05-27 | 布柯玛蓄能器（天津）有限公司 | Be provided with the piston power accumulator of piston sealing structure |
| CN205937293U (en) * | 2016-08-22 | 2017-02-08 | 新乡市华航航空液压设备有限公司 | Sealed closing device of short guide piston automatic compensation |
| CN206539696U (en) * | 2017-02-28 | 2017-10-03 | 中冶华天南京工程技术有限公司 | Sealing device for changing sealing ring tankful rate |
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2017
- 2017-02-28 CN CN201710112562.9A patent/CN106704586B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB736279A (en) * | 1952-12-06 | 1955-09-07 | Luebecker Kaeltemaschinen G M | Improvements in piston and piston-rod packings, more particularly for high pressures |
| US3315972A (en) * | 1963-10-26 | 1967-04-25 | Bofors Ab | Sealing element for sealing two relatively movable members against each other |
| CN2509383Y (en) * | 2001-08-15 | 2002-09-04 | 南京奥亿达液压气动技术有限公司 | Reciprocating self-reversing seal piston apparatus |
| DE10207181A1 (en) * | 2001-11-05 | 2003-05-15 | Continental Teves Ag & Co Ohg | Pressure reservoir for electrohydraulic braking systems, consists of cylinder with piston with long skirt and sealing rings trapping high-pressure gas |
| JP4269163B2 (en) * | 2004-02-27 | 2009-05-27 | Ｎｏｋ株式会社 | Piston type accumulator |
| CN1776262A (en) * | 2004-11-16 | 2006-05-24 | 索奈克斯工业有限公司 | Torque converter clutch apply valve and improved automatic transinission for motov vehicle, and method for restoring its hydraulic integraty |
| CN101142434A (en) * | 2005-03-07 | 2008-03-12 | 美国环保局 | Lightweight low permeation piston-in-sleeve accumulator |
| CN101566207A (en) * | 2008-04-23 | 2009-10-28 | 北京纽希液压技术研究所 | Hydraulic buffer |
| CN101936312A (en) * | 2010-09-15 | 2011-01-05 | 上海汇益控制系统股份有限公司 | High-pressure piston type accumulator |
| CN103946560A (en) * | 2011-11-14 | 2014-07-23 | 贺德克技术有限公司 | Gas cylinder, in particular high-pressure gas cylinder |
| JP2014105876A (en) * | 2012-11-28 | 2014-06-09 | Hoerbiger Kompressortechnik Holding Gmbh | Seal device for sealing reciprocation piston rod of piston compressor |
| CN104132131A (en) * | 2013-05-04 | 2014-11-05 | 徐州凯龙矿山科技开发有限公司 | Novel hydraulic cylinder silicon rubber sealing ring structure |
| CN204357800U (en) * | 2014-11-17 | 2015-05-27 | 布柯玛蓄能器（天津）有限公司 | Be provided with the piston power accumulator of piston sealing structure |
| CN205937293U (en) * | 2016-08-22 | 2017-02-08 | 新乡市华航航空液压设备有限公司 | Sealed closing device of short guide piston automatic compensation |
| CN206539696U (en) * | 2017-02-28 | 2017-10-03 | 中冶华天南京工程技术有限公司 | Sealing device for changing sealing ring tankful rate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322871A (en) * | 2018-11-30 | 2019-02-12 | 湖南协力液压有限公司 | A kind of hydraulic cylinder that can automatically reset |
| CN109630497A (en) * | 2018-11-30 | 2019-04-16 | 湖南协力液压有限公司 | A kind of preload sealing fluid cylinder pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106704586B (en) | 2018-04-10 |
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