CN201258878Y - Spring type energy accumulator in hydraulic system of steam turbine - Google Patents
Spring type energy accumulator in hydraulic system of steam turbine Download PDFInfo
- Publication number
- CN201258878Y CN201258878Y CNU2008201523247U CN200820152324U CN201258878Y CN 201258878 Y CN201258878 Y CN 201258878Y CN U2008201523247 U CNU2008201523247 U CN U2008201523247U CN 200820152324 U CN200820152324 U CN 200820152324U CN 201258878 Y CN201258878 Y CN 201258878Y
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- spring
- hydraulic system
- spring seat
- accumulator
- loaded accumulator
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Abstract
The utility model discloses a spring-loaded accumulator used in a steam turbine hydraulic system, relates to the hydraulic energy accumulation technology field, and aims to solve the technical problems of installation, maintenance and service life of the accumulator used in the hydraulic system. The spring-loaded accumulator comprises a spring holder end cover, a spring holder, a spring, a piston sheathed with a combined seal ring and a supporting ring for the piston, and a connecting flange sheathed with a retaining ring and a seal ring in a cylinder tube from top to bottom. The spring holder end cover and the connecting flange are fixed in the cylinder tube. The spring holder end cover and the spring holder are both provided with a dustproof structure. The spring-loaded accumulator has the characteristics of being convenient to be installed, being easy to be maintained, stable working performance and long service life.
Description
Technical field
The utility model relates to the hydraulic energy-accumulating technology, particularly relates 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.
The model utility content
At the defective that exists in the above-mentioned prior art, technical problem to be solved in the utility model 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 utility model, 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 that the utility model provides, 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 the utility model embodiment spring loaded accumulator;
Fig. 2 is that the K of the utility model Fig. 1 embodiment spring loaded accumulator is to view;
Fig. 3 is for being provided with the structural representation of the spring loaded accumulator of dust guard among the utility model embodiment;
Fig. 4 is that the G of the utility model Fig. 3 embodiment spring loaded accumulator is to view.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model is described in further detail, but present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection domain of the present utility model in.
By Fig. 1, shown in Figure 2, spring loaded accumulator in a kind of turbine hydraulic system that the utility model embodiment is 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 the utility model embodiment, 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 (7)
1, the spring loaded accumulator in a kind of 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.
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, the lower end of described spring seat is provided with the spring abutment sleeve.
6, 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.
7, 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 |
|---|---|---|---|
| CNU2008201523247U CN201258878Y (en) | 2008-08-26 | 2008-08-26 | Spring type energy accumulator in hydraulic system of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201523247U CN201258878Y (en) | 2008-08-26 | 2008-08-26 | Spring type energy accumulator in hydraulic system of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201258878Y true CN201258878Y (en) | 2009-06-17 |
Family
ID=40773113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201523247U Expired - Fee Related CN201258878Y (en) | 2008-08-26 | 2008-08-26 | Spring type energy accumulator in hydraulic system of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201258878Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526014B (en) * | 2008-08-26 | 2011-08-31 | 上海汇益控制系统股份有限公司 | Spring type energy accumulator in turbine hydraulic system |
| CN108644434A (en) * | 2018-04-28 | 2018-10-12 | 北京机械设备研究所 | A kind of screw thread inserting type buffering pressure limiting valve |
| CN113833703A (en) * | 2020-06-23 | 2021-12-24 | 哈威液压股份公司 | Hydraulic lifting device for chassis of mobile device, chassis and mobile device |
-
2008
- 2008-08-26 CN CNU2008201523247U patent/CN201258878Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526014B (en) * | 2008-08-26 | 2011-08-31 | 上海汇益控制系统股份有限公司 | Spring type energy accumulator in turbine hydraulic system |
| CN108644434A (en) * | 2018-04-28 | 2018-10-12 | 北京机械设备研究所 | A kind of screw thread inserting type buffering pressure limiting valve |
| CN113833703A (en) * | 2020-06-23 | 2021-12-24 | 哈威液压股份公司 | Hydraulic lifting device for chassis of mobile device, chassis and mobile device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI HUIYI CONTROL SYSTEM CO., LTD. Free format text: FORMER NAME: SHANGHAI HUIYI HYDRAULIC CONTROL SYSTEM ENGINEERING CORPORATION |
|
| CP03 | Change of name, title or address |
Address after: Shanghai city Qingpu District Baihe Town Teng Fu Road No. 258, zip code: 201711 Patentee after: Shanghai Huiyi Control System Co., Ltd. Address before: Shanghai city Qingpu District Baihe Town Teng Fu Road No. 258, zip code: 201711 Patentee before: Shanghai Huiyi Hydraulic Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20140826 |
|
| EXPY | Termination of patent right or utility model |