CN203655776U - Variable pitch oil cylinder - Google Patents
Variable pitch oil cylinder Download PDFInfo
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- CN203655776U CN203655776U CN201320867884.1U CN201320867884U CN203655776U CN 203655776 U CN203655776 U CN 203655776U CN 201320867884 U CN201320867884 U CN 201320867884U CN 203655776 U CN203655776 U CN 203655776U
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- oil cylinder
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Abstract
The utility model relates to a variable pitch oil cylinder, which comprises a cylinder tube, an ear bottom fixedly arranged at the rear end of the cylinder tube, a cylinder cover fixedly arranged at the front end of the cylinder tube, a piston arranged in the cylinder tube, a piston rod connected with the piston and a sealing system arranged between the piston rod and the cylinder cover, wherein the sealing system comprises a primary sealing part consisting of a first rod guide ring and a first sealing ring and a secondary sealing part for sealing residual liquid unblocked by the primary sealing part; the secondary sealing part comprises a second guide ring and a second sealing ring, which are arranged at the rear end of the first sealing ring. According to the variable pitch oil cylinder, the primary and secondary sealing parts are combined for use, so that hydraulic oil can be completely blocked to prevent leakage, and the guide rings can also be lubricated to prolong the service life; the end bottom and the cylinder cover are additionally provided with pressure testing joints, so that actual stress conditions in the oil cylinder can be accurately learned about; the cylinder tube is connected with the cylinder cover and the end bottom through external threads, so that the length of the cylinder tube can be effectively reduced.
Description
Technical field
The utility model relates to a kind of slurry oil cylinder that becomes, and relates in particular to the change slurry oil cylinder for adjusting vane position and angle in a kind of wind power system, belongs to hydraulic equipment field.
Background technique
At present, wind energy, as renewable energy sources, has obtained increasing attention and exploitation.Along with the continuous maturation of wind power technology, it also has large-scale development condition and good development prospect gradually.Wind-driven generator relies on wind energy to drive blade rotation to produce electric energy, becomes the vitals of slurry oil cylinder as wind-driven generator, for the angle of adjusting vane, makes wind-driven generator automatically be adjusted to the most reasonable optimum state and obtains wind energy.Due to the special operation condition of this type of oil cylinder, maintenance and replacing are more difficult, and somewhat expensive, and this just needs oil cylinder to have higher operational safety and longer working life.
Shown in accompanying drawing 1, mainly there is following problem in existing wind-powered electricity generation oil cylinder:
First, what adopt being connected of cylinder body 1 ' and cylinder bottom 3 ' and cylinder cap 2 ' is that internal thread connects, the periphery that is the front-end and back-end of cylinder body 1 ' is provided with internal thread, the position, joint at cylinder body 1 ' with cylinder cap 2 ' and cylinder bottom 3 ', and cylinder cap 2 ' and cylinder bottom 3 ' arrange outside thread.The problem of bringing is like this: the in the situation that of generator limited space, can increase the length of cylinder body 1 ', also with regard to the setting of remote-effects generator miscellaneous part.
Secondly, be difficult to accurately know actual loading situation in oil cylinder.Because main by the pressure test to rod chamber and rodless cavity at present, or by the pressure test of turnover oil pipe line is estimated in-oil cylinder pressure, but estimated value cannot the in-oil cylinder actual pressure of accurate response, thereby affect the assessment of control system to oil cylinder operating mode and the accurate control to oil cylinder, cause generator efficiency to reduce.
The 3rd, the sealing system between oil cylinder inner piston rod 5 ' and cylinder cap 2 ', be made up of, but there is defect in this sealing system primary seal 10 ', guide ring 6 ' and drain tap 21 ' etc.On the one hand, primary seal 10 ' seals completely without oil and arrives drain tap 21 ', and guide ring 6 ' can not be lubricated, and guide ring 6 ' friction increases so, and greatly decline working life, will lose guide support effect soon and makes seal failure.On the other hand, if primary seal 10 ' not exclusively sealing has a small amount of hydraulic oil arrival drain tap 21 ', wherein a part is by drain tap 21 ' oil sump tank, a part flows to guide ring 6 ', guide ring 6 ' and dust ring 11 ' all do not have hydraulic seal function, after oil cylinder work a period of time, just have hydraulic oil and overflow from piston rod 5 ', pollute working environment.
Model utility content
The utility model relates to a kind of slurry oil cylinder that becomes, it not only can inside contract short Workpiece length in the limited space of generator, can also accurately measure oil cylinder internal pressure, and can guarantee the sealing that oil cylinder is good simultaneously, improve the working efficiency of oil cylinder, extend the working life of oil cylinder.
For realizing this object, the utility model provides a kind of slurry oil cylinder that becomes, comprise cylinder barrel, be fixed on the end ear of described cylinder barrel rear end, be fixed on the cylinder cap of described cylinder barrel front end, also comprise the piston being arranged in described cylinder barrel and the piston rod being connected with described piston, it is characterized in that, it also comprises the sealing system being arranged between described piston rod and cylinder cap, described sealing system comprises the primary seal portion of bar the first guide ring and the first seal ring composition, and, for sealing the inferior sealed department of the raffinate not ending through described primary seal portion, described time sealed department comprises the second guide ring and the second seal ring that are arranged on described the first seal ring rear end.
As one of preferred version, described sealing system also comprises the dust ring that blocks dust.
Specifically, the select location of ear of the described end and described cylinder cap is also provided with the pressure test joint for detection of hydraulic pressure in cylinder barrel.
As one of preferred embodiment, the outer wall periphery of the front-end and back-end of described cylinder barrel is equipped with outside thread, and is arranged on ear of the described end and matches with the internal thread of the front end joint of cylinder barrel with joint, rear end and the described cylinder cap of cylinder barrel.
More specifically, the joint of described cylinder barrel and described cylinder cap is also provided with locking nut.
Sealing system of the present utility model, by being used in combination of primary seal portion and time sealed department, can intercepting hydraulic oil completely and prevent from revealing, and guide ring also can be lubricated, and increases the service life; By the pressure test joint of setting up at end ear and cylinder cap, can accurately know in-oil cylinder actual loading situation; Cylinder barrel is connected with the outside thread of cylinder lid and bottom ear, can effectively reduce cylinder barrel length.
Accompanying drawing explanation
For further illustrating structural feature of the present utility model, below in conjunction with the drawings and specific embodiments, structure outline of the present utility model and technical characteristics are described in further detail.
Figure 1 shows that the structural representation that becomes slurry oil cylinder in prior art.
Figure 2 shows that the structural representation of the utility model one preferred embodiment.
Figure 3 shows that Fig. 2 partial enlarged drawing.
Description of reference numerals: 1 '-cylinder body, 2 '-cylinder cap, 21 '-drain tap, 3 '-cylinder bottom, 4 '-piston, 5 '-piston rod, 6 '-guide ring, 7 '-anti-rotation device, 71 '-steel pipe, 72 '-Anti-rotary block, 73 '-mounting hole, 8 '-displacement transducer, 9 '-magnet ring, 10 '-primary seal, 11 '-dust ring;
Ear, 7-displacement transducer, 8-port connection, 9-locking nut, 10-pressure test joint, 11-magnet ring, 12-the first guide ring, 13-the first seal ring, 14-the second seal ring, 15-dust ring, 16-the second guide ring at the bottom of 1-cylinder barrel, 2-piston rod, 3-piston, 4-cylinder cap, 5-bar ear, 6-.
Embodiment
The change slurry oil cylinder of the present embodiment, comprise cylinder barrel 1, be fixed on the end ear 6 of described cylinder barrel 1 rear end, be fixed on the cylinder cap 4 of described cylinder barrel 1 front end, also comprise the piston 3 being arranged in described cylinder barrel 1 and the piston rod 2 being connected with described piston 3, it also comprises the sealing system being arranged between described piston rod 2 and cylinder cap 4, described sealing system comprises the primary seal portion that bar the first guide ring 12 and the first seal ring 13 form, and, for sealing the inferior sealed department of the raffinate not ending through described primary seal portion, described time sealed department comprises the second guide ring 16 and the second seal ring 14 that are arranged on described the first seal ring 13 rear ends.Described sealing system also comprises the dust ring 15 that blocks dust.
The sealing system of the present embodiment, first in-oil cylinder high pressure oil can pass through the first guide ring 12, has slowed down the impact of high pressure oil to the first seal ring 13 by the buffering of the first guide ring 12, thereby increases working life and the sealing effect of the first seal ring 13.Effect by the primary seal portion that is made up of the first guide ring 12 and the first seal ring 13 to high pressure oil, can intercept most oil body, reaches good sealing effect.By the seal action of primary seal portion, only arrive by small part oil body the inferior sealed department that the second guide ring 16 and the second seal ring 14 form, this small amount of oil body can finally be intercepted by time sealed department, can not cause the leakage of hydraulic oil.Simultaneously, the first guide ring 12 and the second guide ring 16 are separately positioned on the front end of the first seal ring 13 and the second seal ring 14, can first touch oil body, this also just can play respectively lubrication to the first guide ring 12 and the second guide ring 16, extends the working life of guide ring.For sealing system is better played a role, be also provided with dust ring 15 and prevent that dust from entering, more guarantee sealing effect.
In the present embodiment, the select location of ear of the described end 6 and described cylinder cap 4 is also provided with the pressure test joint 10 for detection of cylinder barrel 1 interior hydraulic pressure.By pressure test joint 10, can directly obtain the pressure of the interior rod chamber of cylinder barrel 1 and rodless cavity, accurately reflect the operating mode of oil cylinder, thereby control centre is accurately controlled oil cylinder, improve the efficiency of generator.
In addition, the outer wall periphery of the front-end and back-end of described cylinder barrel 1 is equipped with outside thread, and is arranged on ear 6 of the described end and matches with the internal thread of the front end joint of cylinder barrel 1 with joint, rear end and the described cylinder cap 4 of cylinder barrel 1.So just can realize cylinder barrel 1 coordinates with the outside thread of cylinder cap 4 and end ear 6.With respect to the outside thread Placement of internal thread and the cylinder cap 4 of cylinder barrel 1, this kind of outside thread Placement can effectively shorten the length of cylinder barrel 1, saves limited space in oil cylinder.
For making cylinder barrel 1 more fastening with being connected of cylinder cap 4, described cylinder barrel 1 is also provided with locking nut 9 with the joint of described cylinder cap 4.
Above-mentioned embodiment; be only explanation technical conceive of the present utility model and structure characteristic; object is to allow the stakeholder who is familiar with technique implement according to this; but above said content does not limit protection domain of the present utility model; any equivalence that every foundation Spirit Essence of the present utility model is done changes or modifies, within all should falling into protection domain of the present utility model.
Claims (5)
1. one kind becomes slurry oil cylinder, comprise cylinder barrel, be fixed on the end ear of described cylinder barrel rear end, be fixed on the cylinder cap of described cylinder barrel front end, also comprise the piston being arranged in described cylinder barrel and the piston rod being connected with described piston, it is characterized in that, it also comprises the sealing system being arranged between described piston rod and cylinder cap, described sealing system comprises the primary seal portion of bar the first guide ring and the first seal ring composition, and, for sealing the inferior sealed department of the raffinate not ending through described primary seal portion, described time sealed department comprises the second guide ring and the second seal ring that are arranged on described the first seal ring rear end.
2. change slurry oil cylinder according to claim 1, is characterized in that, described sealing system also comprises the dust ring that blocks dust.
3. change slurry oil cylinder according to claim 2, is characterized in that, the select location of ear of the described end and described cylinder cap is also provided with the pressure test joint for detection of hydraulic pressure in cylinder barrel.
4. according to the change slurry oil cylinder described in claim 2 or 3, it is characterized in that, the outer wall periphery of the front-end and back-end of described cylinder barrel is equipped with outside thread, and is arranged on ear of the described end and matches with the internal thread of the front end joint of cylinder barrel with joint, rear end and the described cylinder cap of cylinder barrel.
5. change slurry oil cylinder according to claim 4, is characterized in that, the joint of described cylinder barrel and described cylinder cap is also provided with locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320867884.1U CN203655776U (en) | 2013-12-26 | 2013-12-26 | Variable pitch oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320867884.1U CN203655776U (en) | 2013-12-26 | 2013-12-26 | Variable pitch oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655776U true CN203655776U (en) | 2014-06-18 |
Family
ID=50922167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320867884.1U Expired - Fee Related CN203655776U (en) | 2013-12-26 | 2013-12-26 | Variable pitch oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655776U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963910A (en) * | 2015-06-10 | 2015-10-07 | 无锡博伊特科技股份有限公司 | Differential pressure adjusting cylinder for mechanical seal |
| CN111566358A (en) * | 2018-01-29 | 2020-08-21 | Ｋｙｂ株式会社 | Fluid leakage detection apparatus and reciprocating type fluid pressure apparatus |
-
2013
- 2013-12-26 CN CN201320867884.1U patent/CN203655776U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963910A (en) * | 2015-06-10 | 2015-10-07 | 无锡博伊特科技股份有限公司 | Differential pressure adjusting cylinder for mechanical seal |
| CN104963910B (en) * | 2015-06-10 | 2017-03-15 | 无锡博伊特科技股份有限公司 | The differential voltage regulation cylinder of mechanical seal |
| CN111566358A (en) * | 2018-01-29 | 2020-08-21 | Ｋｙｂ株式会社 | Fluid leakage detection apparatus and reciprocating type fluid pressure apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140618 Termination date: 20161226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |