CN101526014B - Spring type energy accumulator in turbine hydraulic system - Google Patents
Spring type energy accumulator in turbine hydraulic system Download PDFInfo
- Publication number
- CN101526014B CN101526014B CN200810042052XA CN200810042052A CN101526014B CN 101526014 B CN101526014 B CN 101526014B CN 200810042052X A CN200810042052X A CN 200810042052XA CN 200810042052 A CN200810042052 A CN 200810042052A CN 101526014 B CN101526014 B CN 101526014B
- Authority
- CN
- China
- Prior art keywords
- spring
- spring seat
- hydraulic system
- accumulator
- end cover
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention discloses a spring type energy accumulator in a turbine hydraulic system, relates to the technical field of hydraulic energy storage, and solves the technical problems of installation, maintenance and service life of the energy accumulator in the hydraulic system. The spring type energy accumulator comprises a spring seat end cover, a spring seat, a spring, a piston sleeved with a support ring for combining a sealing ring and the piston, and a connecting flange sleeved with a retainer ring and the sealing ring, which are arranged in a cylinder in turn from top to bottom; the spring seat end cover and the connecting flange are fixed in the cylinder respectively; and the spring seat end cover and the spring seat are provided with dustproof structures. The spring type energy accumulator has the characteristics of convenient installation, stable work, easy maintenance and long service life.
Description
Technical field
The present invention relates to the hydraulic energy-accumulating technology, particularly relate to the technology of the spring loaded accumulator in a kind of hydraulic system that is mainly used in digital electro-hydraulic regulating system for steam turbine (DEH regulating system).
Background technique
Used accumulator is the gas-filled type accumulator all in the hydraulic system in the digital electro-hydraulic regulating system for steam turbine (DEH regulating system) now, comprises bag type accumulator and inflation piston accumulator.The effect of wherein inflating piston accumulator is when steam turbine requires the valve quick closedown because of failure and other reasons, and the oil extraction that moment increases when being used for absorbing actuator's motion prevents that the oil extraction back pressure is too high, thereby the quick closedown of assurance valve.Usually the inflation piston accumulator is to be directly installed in the actuator.Certainly also have and make assembly with support and place separately, link to each other with actuator with oil pipe then, but less employing.The hydraulic system that this inflation piston accumulator is used for DEH has two outstanding shortcomings:
1, the inflation piston accumulator prevents gas leakage by rubber seal, long gas leakage of time one is inevitable, accumulator gas leakage will cause its operational failure, so the inflation piston accumulator must regularly be monitored the air pressure in the accumulator, in time replenishes air pressure and guarantees its proper functioning.
2, the inflation piston accumulator generally all is to be contained on the valve actuator, and because of according to the generated energy difference, each steam turbine valve position also is not quite similar, and some valve actuator mounting point is higher, and nearer relatively from thermal source, is unfavorable for detecting and additional gas.
Summary of the invention
At the defective that exists in the above-mentioned prior art, technical problem to be solved by this invention provides a kind of easy for installation, working stability, easy care, the spring loaded accumulator in the turbine hydraulic system of long service life.
In order to solve the problems of the technologies described above, spring loaded accumulator in a kind of turbine hydraulic system provided by the present invention, it is characterized in that, in cylinder barrel, comprise successively from top to bottom: spring seat end cover, spring seat, spring, be with combined seal ring and piston with the piston of supporting ring, be with the adpting flange of back-up ring and seal ring; Described spring seat end cover and adpting flange are separately fixed in the cylinder barrel.
Further, the upper end of described spring seat end cover is provided with by screw and end cap pressing plate fixed end caps metal screen.
Further, described end cap pressing plate is provided with the dust guard of side hollow out.
Further, the upper end of described spring seat is provided with by screw and the fixing spring seat metal screen of spring seat pressing plate.
Further, the lower end of described spring seat is provided with the spring abutment sleeve.
Further, described spring seat end cover is fixed by the Cock screw of cylinder barrel wall upper end.
Further, described adpting flange is fixed by the Cock screw of cylinder barrel wall lower end.
Utilize the spring loaded accumulator in the turbine hydraulic system provided by the invention, owing to adopt the accumulation of energy structure of spring, avoided the defective of gas-filled type piston cylinder operator, its beneficial effect is as follows:
1) at first spring loaded accumulator can satisfy the working condition requirement of actuator on the performance;
2) because the specific working condition requirement of hydraulic system of steam turbine of thermal power plant, it is very low to have determined that spring holds the frequency of utilization of device, so its working life is very long.Thermal power plant did a light maintenance in general 2 years, did an overhaul in 4 years, when these overhaul, spring loaded accumulator is done check and get final product, and need not to monitor detection at ordinary times.And the mounting point there is not specific requirement yet;
3) spring loaded accumulator is provided with dustproof construction, has effectively guaranteed the proper functioning of accumulator.
Description of drawings
Fig. 1 is the structural representation of embodiment of the invention spring loaded accumulator;
Fig. 2 for the K of Fig. 1 embodiment spring loaded accumulator of the present invention to view;
Fig. 3 is for being provided with the structural representation of the spring loaded accumulator of dust guard in the embodiment of the invention;
Fig. 4 for the G of Fig. 3 embodiment spring loaded accumulator of the present invention to view.
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
By Fig. 1, shown in Figure 2, spring loaded accumulator in a kind of turbine hydraulic system that the embodiment of the invention provided, be characterized in, in cylinder barrel 8, comprise successively from top to bottom: spring seat end cover 13, spring seat 10, spring 9, be with combined seal ring 6 and piston with the piston 7 of supporting ring 5, be with the adpting flange 1 of back-up ring 4 and O-ring seals 3; The upper end of described spring seat end cover 13 is provided with by socket head screw and end cap pressing plate 14 fixed end caps metal screens 15, the upper end of described spring seat 10 is provided with the spring seat metal screen of being fixed by socket head screw 12 and spring seat pressing plate 11 16, and the lower end is provided with spring abutment sleeve 17; Described adpting flange 1 is fixing by the Cock screw 2 of cylinder barrel wall lower end, and described spring seat end cover 13 is fixed by the Cock screw of cylinder barrel wall upper end.
As shown in Figure 1, flange 1 is a filler opening, when piston 7 is not worked when flat, be pressed on the flange 1 by spring 9, during actuator quick closedown oil extraction, because of moment oil drain quantity big, the instantaneous row of pipe and produces certain back pressure not to the utmost, when back pressure surpasses the pretightening force of spring, fluid enters in the accumulator tube, promote piston 7 pressure springs,, just absorbed a large amount of fluid like this in the accumulator until oil pressure and spring force balance, make back pressure control in allowed limits, thereby guaranteed normally closing of actuator, spring 9 one ends and piston join, and the other end has spring seat 10 to join, spring abutment sleeve 17 is arranged, the position-limiting action when playing spring 9 simultaneously and being compressed on spring seat 10; So spring seat 10 has two effects, one as spring location usefulness, another effect is spacing after the length of spring compressed, the assurance spring force is deposited corresponding oily volume in tube in effective coverage, spring seat end cover 13 is fixing spring seats 10, has also all added metal screen on spring seat 10 and spring seat 13 and has been used for preventing dust; As shown in Figure 3, in embodiments of the present invention, if necessary and the space allows, the dust guard 18 of side hollow out can be on end cap pressing plate 14, increased, better dustproof effect can be reached.
Claims (6)
1. the spring loaded accumulator in the turbine hydraulic system, it is characterized in that, in cylinder barrel, comprise successively from top to bottom: spring seat end cover, spring seat, spring, be with combined seal ring and piston with the piston of supporting ring, be with the adpting flange of back-up ring and seal ring; Described spring seat end cover and adpting flange are separately fixed in the cylinder barrel; The lower end of described spring seat is provided with the spring abutment sleeve; Described adpting flange is provided with unique filler opening.
2. the spring loaded accumulator in the turbine hydraulic system according to claim 1 is characterized in that, the upper end of described spring seat end cover is provided with by screw and end cap pressing plate fixed end caps metal screen.
3. the spring loaded accumulator in the turbine hydraulic system according to claim 2 is characterized in that described end cap pressing plate is provided with the dust guard of side hollow out.
4. the spring loaded accumulator in the turbine hydraulic system according to claim 1 is characterized in that, the upper end of described spring seat is provided with by screw and the fixing spring seat metal screen of spring seat pressing plate.
5. the spring loaded accumulator in the turbine hydraulic system according to claim 1 is characterized in that, described spring seat end cover is fixed by the Cock screw of cylinder barrel wall upper end.
6. the spring loaded accumulator in the turbine hydraulic system according to claim 1 is characterized in that described adpting flange is fixed by the Cock screw of cylinder barrel wall lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810042052XA CN101526014B (en) | 2008-08-26 | 2008-08-26 | Spring type energy accumulator in turbine hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810042052XA CN101526014B (en) | 2008-08-26 | 2008-08-26 | Spring type energy accumulator in turbine hydraulic system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101526014A CN101526014A (en) | 2009-09-09 |
| CN101526014B true CN101526014B (en) | 2011-08-31 |
Family
ID=41094066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810042052XA Expired - Fee Related CN101526014B (en) | 2008-08-26 | 2008-08-26 | Spring type energy accumulator in turbine hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101526014B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511004B (en) * | 2013-09-17 | 2015-05-13 | 上海新力机器厂 | Closed electro-hydraulic actuator and assembly of closed electro-hydraulic actuator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2381825Y (en) * | 1999-07-23 | 2000-06-07 | 王庆峰 | Pressure energy accumulator |
| EP1342433A1 (en) * | 2002-03-06 | 2003-09-10 | Schäfer, Klaus | Hydraulic adjusting element |
| CN1888453A (en) * | 2006-07-12 | 2007-01-03 | 三一重工股份有限公司 | Piston type energy accumulator |
| CN201258878Y (en) * | 2008-08-26 | 2009-06-17 | 上海汇益液压控制系统工程有限公司 | Spring type energy accumulator in hydraulic system of steam turbine |
-
2008
- 2008-08-26 CN CN200810042052XA patent/CN101526014B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2381825Y (en) * | 1999-07-23 | 2000-06-07 | 王庆峰 | Pressure energy accumulator |
| EP1342433A1 (en) * | 2002-03-06 | 2003-09-10 | Schäfer, Klaus | Hydraulic adjusting element |
| CN1888453A (en) * | 2006-07-12 | 2007-01-03 | 三一重工股份有限公司 | Piston type energy accumulator |
| CN201258878Y (en) * | 2008-08-26 | 2009-06-17 | 上海汇益液压控制系统工程有限公司 | Spring type energy accumulator in hydraulic system of steam turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101526014A (en) | 2009-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201258878Y (en) | Spring type energy accumulator in hydraulic system of steam turbine | |
| CN107859699A (en) | Woods thanks to brake | |
| CN108625277A (en) | A kind of shock-damping structure and its construction method | |
| CN101526014B (en) | Spring type energy accumulator in turbine hydraulic system | |
| WO2016127777A1 (en) | Nitrogen energy storage hydraulic cylinder | |
| CN102313074A (en) | Automatic filling sealing structure for high-pressure valve | |
| RO126135A2 (en) | Energy regeneration process and pneumatic drive system for ascending and descending cyclic movements | |
| CN100422612C (en) | Safety structure of l pressure-reducing valve | |
| CN202325566U (en) | High-flow pilot operated check valve | |
| CN203050753U (en) | 1000L/min hydraulic control one-way valve for coal mine hydraulic support | |
| CN109667967A (en) | Bellows diaphragm type high-cleanness high-pressure pressure-reducing valve | |
| CN202325567U (en) | Tube-connection high-flow hydraulic control one-way valve | |
| CN102052479A (en) | Composite sealing bidirectional straightway ball valve with four seats | |
| CN101956539A (en) | Follow-up centering sealing device of pumping well head | |
| CN109653948B (en) | Yaw hybrid braking system of wired oil leakage detection mechanism for wind generating set | |
| CN210461747U (en) | Automatic control large-diameter quick cut-off bellows gate valve | |
| CN102364051A (en) | High-flow hydraulic control one-way valve | |
| CN102135003A (en) | Cartridge high-flow hard sealing upright post hydraulic control one-way valve | |
| CN102364052A (en) | Tubular connected high-flow hydraulic control one-way valve | |
| CN202116221U (en) | Floating type disc-shaped brake | |
| CN201953727U (en) | Bag type energy accumulator | |
| CN202073574U (en) | Insertion-type large-flow rigidly-sealed hydraulic control one-way valve for upright post | |
| CN202360112U (en) | Plate-connection high-flow pilot operated check valve | |
| CN201972974U (en) | Diaphragm type hydraulic accumulator | |
| CN205859149U (en) | A kind of non-bolt seals structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20170826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |