CN85104488A - Hydraulic integrated actuator for adjusting moving blade or valve blade - Google Patents
Hydraulic integrated actuator for adjusting moving blade or valve blade Download PDFInfo
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- CN85104488A CN85104488A CN85104488.3A CN85104488A CN85104488A CN 85104488 A CN85104488 A CN 85104488A CN 85104488 A CN85104488 A CN 85104488A CN 85104488 A CN85104488 A CN 85104488A
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Abstract
A kind of improvement of hydraulic actuator of regulating system, be about to existing open type oil circuit hydraulic actuator and change hydraulic integrated actuator for adjusting moving blade or valve blade into, be characterized in directly controlling Oil pump electrical machinery by control system, and hydraulic locking device and working oil automatic compensator be housed in actuator, make sleeve mechanism fully motionless and energy efficient reaches overpressure protection simultaneously under quiescent conditions; Its all composition general assemblies become the hydraulic actuator of the fully integrated oil circuit of totally enclosed type, mix electric slip ring again, can be loaded on the solid of rotation.For example be loaded on and be used to regulate blower blade angle, joint air-valve valve block etc. on the axial fan hub of rotation.
Description
The present invention relates to a kind of regulating system hydraulic actuator, particularly relate to a kind of hydraulic actuator that is used for adjusting axle streaming air operated machine blade or air-valve valve block.
In the prior art, the actuator of axial fan moving vane angle adjustment there are two kinds of mechanical type actuator and open type oil circuit hydraulic actuators." blower fan " book that OTS of China First Machinery Industry Department published in 1974, the hydraulic actuator of introducing external axial fan blade adjustments all is the open type oil circuit.Open type oil circuit hydraulic actuator is to adopt the ground oil pump station, after high pressure oil fed servo guiding valve and rotation oil (or claiming return bend joint), enter the motor of the servo guiding valve of reciprocating type start cylinder control system controlling and driving again, thereby control start oil cylinder moves, the start oil cylinder drives and to make Moving plate and stir crank throw on the fan blade then, thus the angle of regulating blower blade.The hydraulic actuator of open type oil circuit is equipped with servo guiding valve, and there is internal leakage in its duration of work, so the ground oil pump station needs continuous oil supply, to replenish its internal leakage, meaningless ground consumes energy; Also to adorn a servomotor, increase energy consumption; The ground oil pump station also needs to occupy certain ground and space; And the transition apparatus of open type oil circuit is rotation oil, and rubber oil sea wherein is easy to wear.So the open type oil circuit hydraulic actuator life-span is short, efficient is low, not compact.
Task of the present invention be to provide a kind of simple in structure, compact, light and handy, be convenient to control and can improve the hydraulic actuator in working life, to overcome the existing shortcoming of open type oil circuit hydraulic actuator.
The present invention adopts following manner to finish above-mentioned task: by the motor of control system direct controlling and driving oil pump, thereby the servomotor and the servo guiding valve of the existing required employing of open type oil circuit hydraulic actuator of cancellation, the power consumption that so just can save servomotor, also can make oil pump need not continuous operation and further save the energy, simultaneously, also cancel rotation oil, improve the working life of actuator; Hydraulic actuator refills hydraulic locking device and working oil automatic compensator, forms the closed oil circuit hydraulic actuator; Again totally-enclosed fully integrated hydraulic actuator is formed in the integrated general assembly of all constituents, thereby reached simple in structure, compact, light and handy.This totally-enclosed fully integrated hydraulic actuator can be directly used in regulates the air-valve valve block.When this hydraulic actuator is loaded onto electric slip ring, to power to the motor that drives oil pump by electric slip ring, then a whole set of totally-enclosed fully integrated actuator can be installed on the axial fan wheel hub of rotation, is used to regulate the air operated machine blade angle.
Below in conjunction with accompanying drawing one embodiment of the invention are elaborated.
Fig. 1 is the sectional arrangement drawing of hydraulic integrated actuator for adjusting moving blade or valve blade.
Fig. 2 is the sectional drawing of bidirectional hydraulic lock.
With reference to Fig. 1, the hydraulic integrated actuator for adjusting moving blade or valve blade that the present invention proposes is by electric slip ring (13), motor (12), electric motor driven oil pump (10), the coupling (11) that connects motor (12) and oil pump (10), start oil cylinder (3), place the in-oil cylinder main piston of start (4), be fixedly connected on making Moving plate (2), forming of start oil cylinder (3) by making crank throw (19), hydraulic locking device (8) and working oil automatic compensator etc. that Moving plate (2) stirs.Used oil pump (10) is a two-way oil pump, for example, two-way gear oil pump, used hydraulic lock device should be bidirectional hydraulic lock mutually.Two oil circuits that two-way oil pump (10) is drawn each filter (17) and one-way valve and the unloading valve (9) that the side connects through a pair of parallel connection, pass to bidirectional hydraulic lock (8), be switched to the chamber, front and back of main piston (4) then respectively, with relatively moving between control main piston (4) and the start oil cylinder (3).This enforcement case is installed on the axial fan hub so that main piston (4) is fixedly connected, and is mobile by the moving belt action Moving plate (2) of start oil cylinder (3), thereby stir crank throw (19) fan blade rotated.Another embodiment can be installed on the axial fan hub oil cylinder (3) is fixedly connected, moves by the mobile Moving plate (2) of doing of main piston (4), thereby stir crank throw (19) fan blade is rotated.
With reference to Fig. 2, a hydraulic lock piston (8) of one-way valve that above-mentioned bidirectional hydraulic lock is arranged in a straight line by two subtends (18) and centre thereof etc. is formed.Hydraulic lock piston (8) both ends of the surface respectively have a quarter bend hole to lead to two annular grooves on hydraulic lock outside piston surface respectively, these two grooves are at piston (8) when being failure to actuate, promptly be positioned at the neutral position of hydraulic lock, link up with two compensation oilholes of valve body respectively, when piston (8) moves, link up by the groove of low-pressure cavity and the compensate opening of valve body, and blocked by piston (8) outer round surface by the compensation oilhole of hyperbaric chamber.
With reference to Fig. 1, above-mentioned working oil automatic compensator by the compensation oil storage cavity (7) of main piston (4) piston rod center, have the compensating piston (6) of big small end head, be contained in the compensating piston central through bore near the pressure-limit valve (5) of big end and be installed in before and after the start oil cylinder (3) between the chamber and compensating piston (6) small end oil pocket two interior one-way valves of two oil circuits etc. respectively and form.One end of compensation oil storage cavity (7) is the big end of compensating piston (6), and the other end is a compensation oilhole by hydraulic lock piston (8) control.The opposite side of the big end of compensating piston (6) leads to atmosphere.Respectively there is a tank filler sleeve at the two ends of above-mentioned start oil cylinder (3).In the present embodiment, the unloading valve of employing (9) is made up of piston band needle-valve and pressure adjusting spring, and it has an one-way valve, has oil circuit to lead to low-pressure cavity.In addition, in the end of start oil cylinder (3) displacement transducer (21) is housed, the electrical signal of start oil cylinder (3) displacement that it is measured feeds back to control system through electric slip ring, as the control foundation.
The operation principle of the present embodiment:
Under quiescent conditions, be that control system does not require when blower blade changes angle, not to motor (12) power supply that drives oil pump, two-way oil pump (10) does not turn round, and a complete set of executing agency follows the draught fan impeller consubstantiality and rotates, and system own is failure to actuate, two check valves (18) of bidirectional hydraulic lock are under action of reset spring, pin the oil circuit in chamber, start oil cylinder (3) front and back, make start oil cylinder (3) be stabilized on the position blower fan stable operation. When atmospheric temperature raise, the oil in the start oil cylinder (3) expanded, oil pressure surpass certain value (20～35 kilograms per centimeter2) time, then unnecessary oil enters oil storage cavity (7) by the pressure limiting valve (5) at compensating piston (6) center; And the oil of the systems such as oil pump (10) and valve member expands, and oil pressure surpasses certain value (1.1～2.0 kilograms per centimeter2) time, then unnecessary oil also enters oil storage cavity (7) by the oilhole of hydraulic lock piston (8); The opposite side of the big end of compensating piston (6) has air-vent to communicate with atmosphere, and the oil pressure in oil storage cavity (7) surpasses certain certain value (1.1～2.0 kilograms per centimeter2) time, compensating piston (6) moves to its small end direction, realizes that the auto back of working oil is poly-, reaches static overpressure protection.
Under current intelligence, referring to Fig. 1 and Fig. 2, when the angle falls in the control blower blade, connection is through the motor circuit of electric slip ring (13), motor (12) is rotated, drive two-way gear oil pump (10), the bidirectional hydraulic lock ante-chamber is low pressure, and back cavity is high pressure, hydraulic lock piston (8) is under the effect of pressure oil, move to ante-chamber, its thimble backs down check valve (18), links up oil cylinder (3) ante-chamber oil circuit, oil pump (10) is released the oil of oil cylinder (3) ante-chamber, make the oil pressure of hydraulic lock back cavity continue to raise, oil pressure is opened the check valve of hydraulic lock back cavity automatically, makes oil enter the back cavity of oil cylinder (3), start oil cylinder (3) is moved to the draught fan impeller direction, Moving plate (2) is made in drive, thereby the crank throw (19) of stirring on the moving vane handle rotates, and realizes that the angle falls in moving vane (20). Its angular dimension by the signal of telecommunication of the displacement transducer (21) of following the tracks of oil cylinder (3) endface position, is exported to control system through electric slip ring, as the foundation of control.
When blower blade fell the angle to the limit, oil cylinder (3) stroke was ended, and oil pressure raises and surpasses certain limiting value (20～35 kilograms per centimeter
2), then oil pressure is opened unloading valve (9) automatically, and the thimble of unloading valve (9) pushes limit switch, realizes oil pump motor (12) automatic stopping; If limit switch is malfunctioning, then working oil enters low-pressure cavity from the one-way valve of relief valve on the limit, and oil pump (10) changes low pressure (3～8 kilograms per centimeter over to
2) interior circulation, reach the dynamic overpressure protection.
After unloading valve (9) action was stopped motor (12), unloading valve (9) resetted under the effect of spring force, and its oil that resets enters oil storage cavity (7) through the compensation oilhole of hydraulic lock piston (8), and it is poly-to realize that dynamic duty oil returns automatically.
When hydraulic lock piston (8) is opened its ante-chamber one-way valve (18), the compensation oilhole of piston (8) ante-chamber and the compensation oilhole of valve body are linked up, if during low on fuel, the compensation oil of oil storage cavity (7) is under the synergy of suction, atmospheric pressure and compensating piston (6) the small end oil pressure of oil pump (10), can come out to compensate automatically, at this simultaneously, the compensation oilhole of hydraulic lock piston (8) back cavity and the compensation oilhole of valve body are blocked by the cylindrical of piston (8), so high pressure oil does not advance oil storage cavity (7), and all enters start oil cylinder (3).
If will realize the blower blade lift angle, on the contrary then action.
Embodiment of the present invention of introducing are in detail above compared with open type oil circuit hydraulic actuator, have following advantage:
1. the quiet body of actuator of the present invention and the transition apparatus between the solid of rotation are electric slip ring, and its vulnerable part is a carbon brush, and can reach more than 6 years working life.And the transition apparatus of open type oil circuit actuator is a rotation oil, and its vulnerable part is a rubber oil sea, and the life-span only is 0.5～1 year.Therefore, the present invention can make actuator improve working life more than five times, saves maintenance expenses and reduces the shutdown maintenance loss.
2. actuator of the present invention, a complete set of mechanism is installed on the draught fan impeller, and advantages of compact and light structure does not additionally take ground and other space, thereby saves the ground oil pump station, saves the capital construction investment of machine room.
3. actuator of the present invention, when not regulating air quantity, a complete set of mechanism is in dormant state, and oil pump need not continuous running, increases the service life relatively, also saves the oil pump motor power consumption, saves the power consumption of servomotor.As calculated, mechanism of the present invention wants more than 140 times of energy efficient than open type oil circuit hydraulic actuator.
4. the feedback means of mechanism of the present invention is a displacement transducer, and simple and durable is easily made.And the feedback means of open type oil circuit hydraulic actuator is the mechanical-hydraulic system, complex structure, requirement on machining accuracy height.A complete set of manufacture cost of the present invention only is about 1/10th of an open type oil circuit hydraulic actuator manufacture cost.
Except that above-mentioned; the present invention can be used as the actuator of other various automatic regulating systems; only need get final product by the bindiny mechanism that practical use suitably changes start disk shape and start oil cylinder or main piston; the conspicuous change of all genus present technique field those of ordinary skill is all within the scope of the present invention.
Claims (9)
1, a kind of hydraulic actuator that is used for adjusting axle streaming blower blade or air-valve valve block etc., include motor [12], electric motor driven oil pump [10], the coupling [11] that connects motor [12] and oil pump, start oil cylinder [3], place the in-oil cylinder main piston of start [4], what be fixedly connected on start oil cylinder [3] makes Moving plate [2] and crank throw [19], it is characterized in that motor [12] by control system direct controlling and driving oil pump, described hydraulic actuator also is equipped with hydraulic locking device and working oil automatic compensator, and totally-enclosed fully integrated hydraulic actuator is formed in the integrated general assembly of all constituents.
2, according to the hydraulic actuator of claim 1 regulation, it is characterized in that adding electric slip ring (13), power to motor (12) by electric slip ring (13), a whole set of totally-enclosed fully integrated actuator can be installed on the axial fan hub of rotation.
3, according to claim 1 or 2 hydraulic actuators of stipulating, it is characterized in that described oil pump (10) is a two-way oil pump, described hydraulic locking device is bidirectional hydraulic lock (8), two oil circuits that two-way oil pump (10) is drawn through bidirectional hydraulic locks (8) be switched to the chamber, front and back of main piston (4), with relatively moving between control main piston (4) and the start oil cylinder (3).
4, according to the hydraulic actuator of claim 3 regulation, it is characterized in that described two-way oil pump (10) is two-way gear oil pump.
5, hydraulic actuator according to claim 3 regulation, it is characterized in that described bidirectional hydraulic lock is made up of two one-way valves (18) and a middle hydraulic lock piston (8) thereof etc., described hydraulic lock piston (8) both ends of the surface respectively have a quarter bend hole to lead to two annular grooves on outside piston surface respectively, described two grooves (are positioned at the centre of hydraulic lock) at piston (8) when being failure to actuate, link up with two compensation oilholes of valve body respectively, when piston (8) moves, link up by the groove of low-pressure cavity and the compensate opening of valve body, and blocked by piston (8) outer round surface by the compensation oilhole of hyperbaric chamber.
6, according to claim 1 or 2 hydraulic actuators of stipulating, it is characterized in that described working oil automatic compensator by compensation oil storage cavity (7), the CONCENTRIC REDUCER compensating piston (6) of main piston (4) main piston rod center, be contained in the compensating piston central through bore near the pressure-limit valve (5) of big end and two one-way valves (22) etc. and form, described main piston rod inwall have two oil circuits respectively with start oil cylinder (3) in the front and back oil pockets link up, feed compensating piston (6) small end oil pocket through described two one-way valves (22) respectively simultaneously; One end of described compensation oil storage cavity (7) is the big end of compensating piston (6), and the other end is a compensation oilhole by hydraulic lock piston (8) control, and the opposite side of the big end of described compensating piston (6) leads to atmosphere; Respectively there is a tank filler sleeve at the two ends of described start oil cylinder (3).
7, according to the hydraulic actuator of claim 1 or 2 regulations, it is characterized in that on the oil circuit between oil pump (10) and the hydraulic locking device, also being equipped with unloading valve (9), one-way valve and filter (17).
8, according to the hydraulic actuator of claim 7 regulation, it is characterized in that described unloading valve is made up of piston band needle-valve and pressure adjusting spring, it has an one-way valve, has oil circuit to lead to low-pressure cavity.
9, according to claim 1 or 2 hydraulic actuators of stipulating, there is a displacement transducer (21) end that it is characterized in that described start oil cylinder (3), the electrical signal (through electric slip ring) of start oil cylinder (3) displacement that it is measured is exported to control system, as the foundation of control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85104488.3A CN1004896B (en) | 1985-06-07 | 1985-06-07 | Hydraulic integrated actuator for adjusting moving blade or valve blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85104488.3A CN1004896B (en) | 1985-06-07 | 1985-06-07 | Hydraulic integrated actuator for adjusting moving blade or valve blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85104488A true CN85104488A (en) | 1986-09-03 |
| CN1004896B CN1004896B (en) | 1989-07-26 |
Family
ID=4793873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85104488.3A Expired CN1004896B (en) | 1985-06-07 | 1985-06-07 | Hydraulic integrated actuator for adjusting moving blade or valve blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004896B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003423A (en) * | 2010-12-17 | 2011-04-06 | 徐州重型机械有限公司 | Hydraulic bidirectional lock and crane with same |
| CN102251915A (en) * | 2011-06-24 | 2011-11-23 | 武汉大学 | Axial flow water turbine paddle adjustor |
| CN106050686A (en) * | 2016-07-20 | 2016-10-26 | 哈尔滨电气动力装备有限公司 | Mechanical corner adjustment indication mechanism applied to variable pitch vane pump |
| CN106523420A (en) * | 2016-12-30 | 2017-03-22 | 潍柴动力股份有限公司 | Variable-angle fan and angle adjustment method thereof |
-
1985
- 1985-06-07 CN CN85104488.3A patent/CN1004896B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003423A (en) * | 2010-12-17 | 2011-04-06 | 徐州重型机械有限公司 | Hydraulic bidirectional lock and crane with same |
| CN102251915A (en) * | 2011-06-24 | 2011-11-23 | 武汉大学 | Axial flow water turbine paddle adjustor |
| CN106050686A (en) * | 2016-07-20 | 2016-10-26 | 哈尔滨电气动力装备有限公司 | Mechanical corner adjustment indication mechanism applied to variable pitch vane pump |
| CN106523420A (en) * | 2016-12-30 | 2017-03-22 | 潍柴动力股份有限公司 | Variable-angle fan and angle adjustment method thereof |
| CN106523420B (en) * | 2016-12-30 | 2018-08-31 | 潍柴动力股份有限公司 | A kind of varied angle fan and its angle adjusting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1004896B (en) | 1989-07-26 |
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