CN101105243A - Valve hydraulic driver - Google Patents
Valve hydraulic driver Download PDFInfo
- Publication number
- CN101105243A CN101105243A CNA2007100248562A CN200710024856A CN101105243A CN 101105243 A CN101105243 A CN 101105243A CN A2007100248562 A CNA2007100248562 A CN A2007100248562A CN 200710024856 A CN200710024856 A CN 200710024856A CN 101105243 A CN101105243 A CN 101105243A
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- valve
- shift fork
- valve rod
- driver
- finger
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Abstract
The invention discloses a valve hydraulic driver for controlling opening and closing of valve. The hydraulic driver comprises a driver shell, a piston rod and a hydraulic cylinder, wherein the piston rod is slidingly supported on the driver shell via the hydraulic cylinder; the a valve stem shifting yoke is rotatably supported on the driver shell, and a valve stem mounting hole and a shifting pin slot are arranged on the valve stem shifting yoke; and a valve stem shifting pin is fixedly arranged on the piston rod and slidingly positioned in the shifting pin slot on the valve stem shifting yoke. The valve stem shifting yoke is slidingly supported on the driver shell via an upper sliding sleeve and a lower sliding sleeve. The driver not only has large driving force and fast response speed, but also its output torque can be adapted with the variation rule of resisting torque for opening and closing valve. The invention has the advantages of reasonable structure and low cost; and can be widely used for controlling industrial pipeline valve in petroleum industry, chemical industry, ocean engineering and shipping industry.
Description
Technical field
The present invention relates to a kind of start-stop device of valve, particularly the fluid pressure drive device of control valve keying.
Background technique
In the industrial pipeline of industries such as oil, chemical industry, ocean engineering and boats and ships, all using a large amount of valves.Along with the raising of development of science and technology and the automatic control degree of production process, the keying of valve control especially realizes the keying control of remote control operation valve to needs, mostly adopts electronic, pneumatic or hydraulic pressure drives valve opening and closing.Hydraulic driving has with it again that driving force is big, the fast dynamic response ability is strong, interference free performance is excellent, is convenient to advantage such as frequent steadily commutation and has obtained application more widely in the keying control of valve.
Present fluid pressure drive device to valve, especially the fluid pressure drive device to block valves such as butterfly valve, ball valves mainly contains two kinds of structural types: a kind of is to adopt oil hydraulic motor directly to drive valve rod to rotate and the opening and closing of realization valve, this control operation pattern, cost height, weight are big, motor usefulness is difficult to give full play to, and these show outstanding especially for the many valve systems that need centralized control or telecontrol; Another kind is to adopt piston-rack formula structure, it is to come actuation gear and valve rod by piston-rack, to realize the opening and closing of valve, this structural type is cost height, complex structure not only, and it is relatively slow to exist speed of response, opens the deficiencies such as influence that performance is subjected to gear, tooth bar transmission quality.
No matter be driving device for hydraulic motor, or the piston-rack drive unit, invariable valve opening and closing driving torque all had; But valve is in the course of action of actual opening and closing, when especially opening, owing to reasons such as pipeline back pressure, fed sheet of a media inertia and static friction, required torque is not invariable, but moment of torsion is bigger during opening and closing, and moment of torsion is less relatively in the opening process.In order to guarantee enough moment of torsion opening/shutting valves, just have to select for use the valve fluid pressure drive device with big output torque in the prior art, this just causes low load with strong power, causes the raising of cost and the waste of resource.
Summary of the invention
Technical problem to be solved by this invention is, a kind of valve hydraulic driver is provided, it not only driving force big, be convenient to the frequent steadily commutation of valve and open and close; And has a variable output torque that adapts to the valve opening and closing rule.
In order to solve the problems of the technologies described above, valve hydraulic driver of the present invention comprises actuator housing, piston rod and hydraulic cylinder, and this piston rod is supported on the actuator housing by hydraulic cylinder slidably; Going back rotatably support on the described actuator housing has the valve rod shift fork, and this valve rod shift fork is provided with valve rod mounting hole and finger groove; Be installed with the valve rod finger on the described piston rod, this valve rod finger is positioned at the finger groove on the valve rod shift fork slidably.
After adopting said structure, because the oil hydraulic cylinder that hydraulic cylinder and piston rod are formed can pass through valve rod finger and valve rod shift fork, driving is installed in the valve rod on the valve rod shift fork, makes valve realize standard-sized sheet, complete shut-down exactly or is in any aperture state.Make driver have that the driving force of fluid pressure drive device is big, antijamming capability is strong so on the one hand, rapid dynamic response speed is convenient to realize the advantages such as steady commutation keying of valve.On the other hand in the valve opening motion, owing to the distance of the valve rod finger in the finger groove of valve rod shift fork to valve rod mounting hole center line changed to the longest to the shortest by the longest again, when this just made valve opening, the stressed arm of force of valve rod shift fork was the longest, had maximum torsional moment; The arm of force shortens gradually subsequently, and when arriving midstroke, the arm of force is the shortest, the moment of torsion minimum; The back arm of force is elongated gradually again again, and the driving moment that oil hydraulic cylinder provided becomes greatly gradually, until closing.In the This move process, though it is fixed constant that the hydraulic coupling that oil hydraulic cylinder provides is a weighing apparatus, but oil hydraulic cylinder is applied to driving torque on valve rod shift fork and the valve rod, but be to arrive big the variation from big to small again, the variation of this output torque just and the valve opening and closing torque change rule match, the low load with strong power phenomenon that has been taken place when having avoided drive configuration, reduce cost to greatest extent, weight reduction, again because shift fork, finger mechanism that this structure has adopted Driven by Hydraulic Cylinder, have simple in structurely, ensuring smooth transmission, commutation action are more accurately fast.
A kind of preferred implementation of the present invention is that described valve rod shift fork is supported on the actuator housing slidably by last slide bushing and lower slider lining.Adopt the sliding bearing structure of upper and lower pair of slide bushing, both made the valve rod stress equalization, valve rod is difficult for crooked, makes that again the rotation of valve rod shift fork is more steady, and is reliable, helps the accurate keying of valve.
Another kind of preferred implementation of the present invention is provided with the finger lock face in the finger groove outer end position of described valve rod shift fork.This structure is actually stretches out the angle with finger groove notch outer end and cuts off and formed the finger lock face, when valve is in standard-sized sheet or full close position, the valve rod finger slides onto this finger lock face from the finger groove, and locked face props up, make valve carry out reverse direction actuation by valve rod and valve rod shift fork, thereby realized the valve location locking, effectively avoided fitting badly or open not enough formed leakage and flow resistance because of valve.
Another preferred implementation of the present invention, described valve rod shift fork is provided with locating face.Shift fork locating face and finger lock face on the valve rod shift fork are parallel to each other, and are provided with adjusting screw rod on described actuator housing, and the front end of this adjusting screw rod is corresponding with the locating face position.This structure makes that the finger locating face was conditioned screw rod and withstands, and closes oscillating stroke thereby make the valve rod shift fork have fixing valve opening when valve was in unlatching or closed condition; Simultaneously valve is in and opens or during closed position, the valve rod shift fork is subjected to the qualification of valve rod finger and adjusting screw rod, lock accurately and reliably spacingly, adjusts the oscillating stroke of all right regulating valve stem shift fork of adjusting screw rod.
Description of drawings
Below in conjunction with the drawings and specific embodiments valve hydraulic driver of the present invention is described in further detail.
Fig. 1 is the plan view of a kind of concrete enforcement structure of valve hydraulic driver of the present invention;
Fig. 2 is the left view of structure shown in Figure 1;
Fig. 3 is valve opening and closing resistance torque, driver of the present invention and existing driver moment test value comparison diagram;
Fig. 4 is the Changing Pattern figure of valve hydraulic driver of the present invention output torque under different operating pressure;
Fig. 5 is the another kind of concrete plan view of implementing structure of valve hydraulic driver of the present invention.
Fig. 6 is a valve rod shift fork part plan view in the structure shown in Figure 5.
Embodiment
In Fig. 1, valve hydraulic driver shown in Figure 2, the power source oil hydraulic cylinder includes hydraulic cylinder 10 and places piston rod 7 in the hydraulic cylinder 10 slidably.Two hydraulic cylinders 10 are installed on actuator housing 1 symmetrically, and these two relative hydraulic cylinders 10 are placed in the two ends of piston rod 7 respectively, and piston rod 7 can horizontally slip in hydraulic cylinder 10.Each hydraulic cylinder 10 all is sealed in piston rod 7 on the hydraulic cylinder 10 by seal ring 6 and cylinder barrel end cap 5, makes piston rod 7 be supported on slidably on the actuator housing 1 by hydraulic cylinder 10.Bleeder screw 8 and free flow coupling 9 are housed respectively on each hydraulic cylinder 10, and this free flow coupling 9 is directly to be connected with pressure source or hand pump under manually-operable or case of emergency, to finish emergency operation.Be equipped with into oil drainage hole 11 in the outer end of each ram pot 10, so that be connected with oil hydraulic pump equal pressure source.
In actuator housing 1 by on slide bushing 16 and lower slider lining 18 rotatably supports valve rod shift fork 2 is arranged, on valve rod shift fork 2, be provided with two notch side plates symmetrically, be equipped with finger groove 3 on each notch side plate; Piston rod 7 passes between the two notch side plates just at the right time with a gap.Valve rod finger 4 is installed on the piston rod 7 regularly, and two external parts of valve rod finger 4 are positioned at two finger grooves 3 just at the right time slidably.Center position at valve rod shift fork 2 is provided with valve rod mounting hole 17, and the stem shaft with valve during work is fixedly installed in the valve rod mounting hole 17 alive, does to start swing so that valve rod and valve rod shift fork 2 are connected as a single entity thereupon.
Valve rod shift fork 2 is provided with locating face 21, and this locating face 21 parallels with the center line of piston rod 7.Go back adjusting screw rod 12 on the drive shell 1, adjusting screw rod 12 front ends that stretch into actuator housing 1 inner chamber are corresponding with locating face 21 positions on the valve rod shift fork 2, so that two limit positions of valve rod shift fork 2 standard-sized sheets, full cut-off are determined in restriction.
Driver head cover plate 13 is housed on the end face of actuator housing 1 hermetically, indication cover plate 15 also is equipped with in the end face central position of driver head cover plate 13,14 of indicating heads pass driver head cover plate 13 and indication cover plate 15 rotatably supports on it, and indicating head 14 supports with O RunddichtringO and driver head cover plate 13 and 15 sealings of indication cover plate; Indicating head 14 is connected with valve rod shift fork 2, with the pendulum position of indication valve rod shift fork 2 on driver head cover plate 13, thereby shows standard-sized sheet, the full cut-off of valve or is in any aperture position.
During drive operation, add pressure oil as the oil drainage hole 11 that advances to the oil pocket that is positioned at piston rod 7 right-hand members by the right side, piston rod 7 moves under the effect of pressure oil to the left, valve rod finger 4 on the piston rod 7 is by finger groove 3, promote valve rod shift fork 2 swing to the left, the valve rod that also drives simultaneously valve rotates, thereby realizes the keying operation of valve.Otherwise give the oil pocket plus-pressure oil in left side, piston rod 7 moves to the right, and the valve rod finger 4 on the piston rod 7 promotes valve rod shift fork 2 swing to the right.
In above-mentioned course of action, the distance of valve rod finger 4 and valve rod mounting hole 17 center lines, be that the valve driving arm of force is changing to long from growing to lacking again, though the driving force that oil hydraulic cylinder applies is constant, but because the variation of the arm of force, still changing so drive the moment of torsion that valve rod rotates, the resisting moment Changing Pattern of this variation during by chance with valve opening and closing adapts, and piston-rack driver and fluid motor-driven device then can only provide weighing apparatus fixed output torque.Under same working pressure condition, to valve opening and closing resistance torque, piston-rack driver, fluid motor-driven device and driver of the present invention, test respectively, its test bit is as shown in Figure 3.
In order further to verify the Changing Pattern of valve hydraulic driver output torque of the present invention, under the working pressure of 100Bar, 90Bar, 65Bar and 60Bar, experimentize respectively, its empirical value is as shown in Figure 4.
Can find out very intuitively from above-mentioned test figure data, valve hydraulic driver of the present invention has variable output torque, and the Changing Pattern of this moment of torsion cooperatively interacts with the valve opening and closing resistive torque, thereby, valve hydraulic driver of the present invention, under the situation that keeps the hydraulic driving advantage, have piston-rack driver and hydraulic pump drive advantage that device does not have again.
Shown in Figure 5 is the another kind of mode of execution of valve hydraulic driver of the present invention, and except that the structure difference of valve rod shift fork 2, all the other structures are identical in this embodiment.As shown in Figure 6, in the present embodiment, the wedge angle that 3 liang of notch outer ends of finger groove of valve rod shift fork 2 are located is all clipped, thereby formed finger lock face 19.When valve is in when closing with the enable possition, valve rod finger 4 is held on the finger lock face 19 on the valve rod shift fork 2, and props up valve rod shift fork 2, valve rod is locked in closes and the enable possition.Valve can not have been avoided sternly not occurring leaking or opening deficiency because of valve producing the flow resistance phenomenon because of valve closing because of the effect reverse direction actuation of extraneous factors such as medium.On valve rod shift fork 2, have valve rod mounting hole 17, be provided with keyway 20 in this valve rod mounting hole 17; The valve rod of valve is installed in the valve rod mounting hole 17 by the connecting key in the keyway 20.
Above-mentionedly enumerated preferred implementations more of the present invention, but the present invention is not limited thereto, under the situation of basic principle of the present invention, can also make many conversion and improvement.Outside the live bearings such as slide bushing that are supported on the actuator housing to be adopted as the valve rod shift fork, conversion or be improved to rolling bearing or directly be supported on structural types such as actuator housing slidably; The oil hydraulic cylinder that comprises piston rod and hydraulic cylinder can also adopt single-action hydraulic cylinder to add corresponding driving devices such as Returnning spring or the like as the double-acting hydraulic cylinder that is oppositely arranged among the above-mentioned embodiment.As long as therefore adopted oil hydraulic cylinder to add the valve hydraulic driving structure of shifting fork mechanism, all should be considered as falling into protection scope of the present invention.
Claims (10)
1. a valve hydraulic driver comprises actuator housing (1), piston rod (7) and hydraulic cylinder (10), and this piston rod (7) is supported on the actuator housing (1) slidably by hydraulic cylinder (10); It is characterized in that: going back rotatably support on the described actuator housing (1) has valve rod shift fork (2), and this valve rod shift fork (2) is provided with valve rod mounting hole (17) and finger groove (3); Be installed with valve rod finger (4) on the described piston rod (7), this valve rod finger (4) is positioned at the finger groove (3) on the valve rod shift fork (2) slidably.
2. valve hydraulic driver according to claim 1 is characterized in that: described valve rod shift fork (2) is supported on the actuator housing (1) slidably by last slide bushing (16) and lower slider lining (18).
3. valve hydraulic driver according to claim 1 is characterized in that: finger groove (3) outer end position at described valve rod shift fork (2) is provided with finger lock face (19).
4. valve hydraulic driver according to claim 1 is characterized in that: described valve rod shift fork (2) is provided with shift fork locating face (21).
5. valve hydraulic driver according to claim 1 is characterized in that: finger groove (3) outer end position at described valve rod shift fork (2) is provided with finger lock face (19); Described valve rod shift fork (2) is provided with shift fork locating face (21); Shift fork locating face (21) and finger lock face (19) on the valve rod shift fork (2) are parallel to each other, and are provided with adjusting screw rod (12) on described actuator housing (1), and the front end of this adjusting screw rod (12) is corresponding with locating face (21) position.
6. according to the described valve hydraulic driver of claim 1-5, it is characterized in that: two hydraulic cylinders (10) are installed on the described actuator housing (1) symmetrically, and this two hydraulic cylinder (10) is placed in the two ends of described piston rod (7) respectively slidably.
7. according to each described valve hydraulic driver among the claim 1-5, it is characterized in that: two hydraulic cylinders (10) are installed on the described actuator housing (1) symmetrically, and this two hydraulic cylinder (10) is placed in the two ends of described piston rod (7) respectively slidably.
8. according to each described valve hydraulic driver among the claim 1-5, it is characterized in that: be separately installed with bleeder screw (8) and free flow coupling (9) on the described hydraulic cylinder (10).
9. according to each described valve hydraulic driver among the claim 1-5, it is characterized in that: driver head cover plate (13) is installed on described actuator housing (1), be supported with indicating head (14) versatilely on this driver head cover plate (13), this indicating head (14) is connected with valve rod shift fork (2).
10. according to each described valve hydraulic driver among the claim 1-5, it is characterized in that: be provided with two notch side plates on the described valve rod shift fork (2) symmetrically, described piston rod (7) is equipped with finger groove (3) on each notch side plate between this notch side plate; Valve rod finger (4) two external parts that are fixedly installed on the piston rod (7) are positioned at two finger grooves (3) respectively slidably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100248562A CN101105243B (en) | 2007-07-03 | 2007-07-03 | Valve hydraulic driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100248562A CN101105243B (en) | 2007-07-03 | 2007-07-03 | Valve hydraulic driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101105243A true CN101105243A (en) | 2008-01-16 |
| CN101105243B CN101105243B (en) | 2011-06-29 |
Family
ID=38999267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100248562A Expired - Fee Related CN101105243B (en) | 2007-07-03 | 2007-07-03 | Valve hydraulic driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101105243B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027395A (en) * | 2018-08-10 | 2018-12-18 | 江苏金陵自控技术有限公司 | The control system and adjustment type actuator of electro-hydraulic linkage |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6206338B1 (en) * | 1999-12-22 | 2001-03-27 | Abb Vetco Gray, Inc. | Fail as-is hydraulic actuator |
| CN2828404Y (en) * | 2005-10-04 | 2006-10-18 | 陆平 | Electric hydraulic device |
| CN201071973Y (en) * | 2007-07-03 | 2008-06-11 | 江苏中奥控制系统科技有限公司 | Valve hydraulic driver with locking structure |
| CN201071974Y (en) * | 2007-07-03 | 2008-06-11 | 江苏中奥控制系统科技有限公司 | Valve hydraulic driver |
-
2007
- 2007-07-03 CN CN2007100248562A patent/CN101105243B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027395A (en) * | 2018-08-10 | 2018-12-18 | 江苏金陵自控技术有限公司 | The control system and adjustment type actuator of electro-hydraulic linkage |
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| Publication number | Publication date |
|---|---|
| CN101105243B (en) | 2011-06-29 |
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Granted publication date: 20110629 Termination date: 20130703 |