CN106246854A - Bidirectional ratchet hydraulic actuator and testing device of safety valve - Google Patents
Bidirectional ratchet hydraulic actuator and testing device of safety valve Download PDFInfo
- Publication number
- CN106246854A CN106246854A CN201610720644.7A CN201610720644A CN106246854A CN 106246854 A CN106246854 A CN 106246854A CN 201610720644 A CN201610720644 A CN 201610720644A CN 106246854 A CN106246854 A CN 106246854A
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- Prior art keywords
- ratchet
- hydraulic actuator
- bidirectional
- hydraulic
- frame
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H2047/025—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the fluid gearing comprising a plurality of pumps or motors
Abstract
The present invention relates to a kind of bidirectional ratchet hydraulic actuator and a kind of testing device of safety valve.Bidirectional ratchet hydraulic actuator, including frame, it is provided with ratchet assembly with being rotationally connected in frame, ratchet assembly includes the forward ratchet that concentric is arranged, reversely ratchet, it is connected by cooperation tenon each other between forward ratchet with reversely ratchet, the concentric column periphery arranged in the middle of ratchet assembly is arranged with cursor, the upper and lower surfaces of cursor hinge ground connection respectively is provided with ratchet, wherein a ratchet is suitable with the ratchet of forward ratchet, another ratchet is suitable with the ratchet of reverse ratchet, two ratchets are all equipped with unidirectional driving mechanism, cursor both sides are hinged the power hydraulic cylinder for driving cursor to rotate respectively, the other end of two power hydraulic cylinders is hinged and is connected to frame both sides, ratchet assembly is disposed with working hole along its axis direction, working hole is through hole.It addition, the present invention also provides for the testing device of safety valve of the whole series, the full-automation of safety valve testing can be realized.
Description
Technical field
The present invention relates to a kind of bidirectional ratchet hydraulic actuator and a kind of testing device of safety valve, belong to safety valve testing skill
Art field and Hydraulic Field.
Background technology
Relief valve is that opening and closing element is in normally off by under External Force Acting, when the pressure medium in equipment or pipeline rises superb
When crossing setting, prevent pressure medium in pipeline or equipment from exceeding the particular usage valve of specified value by discharge medium outside system
Door.Relief valve belongs to automatic valve class, is mainly used on boiler, pressure vessels and pipes, controls pressure and is less than setting, to people
Body safety and equipment have run important protective effect.Relief valve is a kind of special equipment.Relief valve has to pass through pressure test (i.e.
Verification, pet phrase claims debugging) could use.
The most frequently used a kind of relief valve is spring loaded safety valve.Spring loaded safety valve (hereinafter referred to as relief valve) is dependent on bullet
The elastic pressure of spring and by sealing member (or claiming opening and closing element) lockings such as the spools (or claiming flap) of relief valve.Once by protection equipment
Pressure medium raise, when the pressure produced exceedes the unlatching value of safety valve setting, pressure medium will overcome the bullet of relief valve
Spring pressure, causes sealing member to be backed down, and forms a pressure release passage, media discharge, is reduced by protection equipment pressure,
When pressure falls below the closing presure of relief valve, relief valve can be automatically switched off again.It is just such to ensure safety.
Relief valve is often dismantled by maintenance, or is affected by various environmental factorss so that spring acts on spool
Power change and safety cannot be ensured, in order to allow this power be maintained in claimed range, be necessary for by regulation to relief valve
Verify so that it is reach the unlatching value that we need.
The verification mode of relief valve can be divided into off-line to verify and the big mode of on-line testing two:
One, off-line verification is mainly verified by checking table, it is simply that is arranged on checking table by relief valve, then uses school
Testing medium makes relief valve open, and confirms to open pressure by observing Pressure gauge.The most according to circumstances adjust spring force, repeatedly survey
Examination, until reaching requirement.The relief valve of back pressure relief valve and high temperature cryogenic media cannot accurately be verified by this method.
Further, off-line verification needs relief valve to disassemble is transported to verify room, transport installation after school is good again back, so
One adds a lot of workload, and because separating of valve also can delay production.
Thus people have invented again on-line testing.
Two, on-line testing.
1, online liter is compacted jumping method.Be exactly relief valve in systems, system is artificially boosted, until relief valve open, see
Examine the unlatching pressure of relief valve, the most according to circumstances adjust spring force, repeatedly test, until reaching requirement.Result is very accurate, also
Relief valve need not be dismantled.But this method is relatively big to the sealing face damage of relief valve, and operational danger is relatively big, special consuming resource,
Speed is the slowest.Due to will lifting pressure repeatedly, also can delay production.
Invent the most again the mode of on-line instrument verification.
2, on-line instrument check addition.It is through instrument applying external force and will act at acting force of the spring downward on relief valve
Measure, the unlatching pressure calculating relief valve with this, the most according to circumstances adjust spring force, repeatedly test, until reaching to want
Ask.This method does not the most affect production, system pressure need not change, and valve need not be dismantled, and detection speed ratio is very fast, convenient,
Consuming resource is few, economical and efficient, can verify under actual condition, and result is accurate.
Therefore, on-line instrument verification is current most popular verification mode.Relief valve on-line testing instrument is naturally non-the most the normally off
Key.
The principle of on-line instrument verification:
Applying a power contrary with spring force with instrument overcomes spring for the active force of spool, and this power is gradually
Strengthen.The pressure of medium is also overcoming spring force simultaneously, and the power effect that therefore it applies with instrument is consistent.When along with instrument
When the power that device applies is gradually increased to a certain value, relief valve may turn on, and the power that instrument applies is able to know that, is designated as Fh.It is situated between
Pressure (actually pressure, the most industrial custom is the pressure) P of matter, is can be measured, and spool is by the area S of medium effect
It is can be calculated or known, so directed force F n=P*S of medium is known that.Owing to when valve is just turned on being
Because the active force of instrument adds that the active force of medium just overcomes directed force F s of spring, so obtaining formula:
Fs=Fh+Fn=Fh+P*S thus can try to achieve Fs.Acting force of the spring is tried to achieve, then medium is when how high pressure
Relief valve could be allowed to open the most just can calculate, open pressure and be designated as Ps, Ps=Fs/S.
Then unlatching pressure comparison Ps needed with us, adjusts spring force according to comparing result.Examine again after adjustment
Surveying whether Ps meets requirement, testing and debugging is until meeting and requiring the most repeatedly.
If the reality that adjusts of spring force opens the pressure unlatching pressure limit less than needs, just clockwise with spanner
Six sides of spring force regulation bolt are twisted in direction, press under bolt, and spring is compressed, and increase according to Hooke's law acting force of the spring.As
The pressure unlatching pressure limit higher than needs is opened on fruit border, then torsion spring power regulates bolt counterclockwise, and acting force of the spring reduces.
Spring force regulation bolt is plus thread.
One, initial on-line testing instrument:
Instrument is made up of castering action power bringing device and two major parts of force checking device and some auxiliaries.By it
Dedicated hydraulic cylinder or screw apply castering action power to relief valve, and calculate, by detection device, the size exerted oneself.From
Apply lifting force, valve opening judges, during data process, the adjustment of spring force, until the verification after having verified
Report is filled in, and is all by being accomplished manually.This is full type hand.
Two, present on-line testing instrument:
People on the basis of above through some electromechanical integration transform after add again computer to data at
Reason, has obtained present tester.Polytype is had in present tester industry, but similar.In checking procedure very
Many work have been achieved with automatization, and the work of people decreases, and efficiency improves.Many-sided technology achieves ripe and enters
Step.
But the heaviest in a checking procedure even to this day working link also needs to manually complete, here it is adjust
Spring force, especially prominent especially for big relief valve.Spring force to be pulled regulation bolt needs the moment of torsion about 1000 Ns of rice,
Three people are needed to pull with strength, the tightliest.And adjust and once must again load and unload an instrument, pretty troublesome, the most time-consumingly.Also have
The when of dismounting instrument and adjustment spring force on people's valve to be stood in limit, for High Temperature High Pressure and the relief valve of poisonous medium, people
It is the highest for standing in work risk near valve, and working condition is the most severe.When adjusting spring force, torsion also can be applied to safety
Above the attachment weld of valve or flange, junction is existed certain impact.It is intended to be eager further, people works in the presence of a harsh environment
Completion is left, and often finishes the work perfunctorily, and has influence on checking precision.A problem is also that tester needs lighting.
Situation considers routinely, and the first executor of adjustment automatically of spring force need to possess claimed below:
(1), high pulling torque.The high pulling torque of more than 1000 Ns of rice have to be exported.
(2), small size.Construction features according to relief valve and carry requirement easy for installation, this executor's volume can not
Excessive.Substantially requirement, long without departing from 35 centimeters, wide without departing from 25 centimeters, high without departing from 10 centimeters.Weight is the lightest.
(3), can two-way turn round, rotation direction easy switching, amount of spin is controlled more, it is known that.
(4), center of rotation be hollow and the most unimpeded, can allow spring force regulation bolt pass through and pass through sleeve fit
Join.
By investigation and comparison, in big torque force device of the prior art, device for providing torque amplification, hydraulic motor, hydraulic spanner, gas
The devices such as wrench, all can not meet above-mentioned requirements.
Owing to not finding ready-made energy to meet the device of requirement, so requirement can only be met one energy of brand-new design
Device, is used for making spring force and adjusts executor.
Summary of the invention
The technical problem to be solved is: provide a kind of bidirectional ratchet hydraulic actuator so that the bullet of relief valve
Spring force can adjust automatically, it addition, correspondingly provide a kind of testing device of safety valve so that safety valve testing realizes full-automation.
For solving above-mentioned technical problem the technical solution adopted in the present invention it is: bidirectional ratchet hydraulic actuator, including machine
Frame, is provided with ratchet assembly while frame is rotationally connected, and ratchet assembly includes the forward ratchet that concentric arranges, reverse ratchet, just
Being connected by cooperation tenon each other between ratchet with reversely ratchet, ratchet assembly sets between forward ratchet, reverse ratchet
Being equipped with concentric column, concentric column periphery is arranged with cursor, and the upper and lower surfaces of cursor hinge ground connection respectively is provided with ratchet,
Wherein a ratchet is suitable with the ratchet of forward ratchet, another ratchet is suitable with the ratchet of reverse ratchet, and two ratchets all arrange
Unidirectional driving mechanism, cursor both sides is had to be hinged the power hydraulic cylinder for driving cursor to rotate, two power fluids respectively
The other end of cylinder pressure is hinged and is connected to frame both sides, and ratchet assembly is disposed with working hole along its axis direction, and working hole is through hole.
Further: working hole is profiled holes, sleeve it is equipped with in working hole.
Further: unidirectional driving mechanism is hydraulic cylinder or electromagnetism push rod.
Further: two ratchets are all equipped with back-moving spring.
Further: the oil pipe of two power hydraulic cylinders uses reverse parallel connection mode.
Further: the impulse stroke two ends of power hydraulic cylinder are equipped with travel switch respectively.
Further: between ratchet assembly and frame, be provided with the position sensing for measuring ratchet assembly amount of spin signal
Device.
Testing device of safety valve, including above-mentioned bidirectional ratchet hydraulic actuator, the frame of bidirectional ratchet hydraulic actuator
The support platform that is provided with fixed above, supports and is provided with lifting hydraulic cylinder on platform, and the piston rod of lifting hydraulic cylinder is provided with for connecting valve
The adapter of bar, lifting hydraulic cylinder be equipped measure its lifting force force transducer, be provided with between ratchet assembly and frame for
Measuring the position sensor of ratchet assembly amount of spin signal, power hydraulic cylinder, lifting hydraulic cylinder are connected to hydraulic power unit, power
Sensor, position sensor, hydraulic power unit are all electrically connected to electric control unit, and electric control unit is additionally provided with medium
Pressure transducer, relief valve are opened and are judged sensor.
Further: the control terminal of electric control unit is smart mobile phone.
Further: be equipped for testing device of safety valve is fixed bottom the frame of bidirectional ratchet hydraulic actuator
Fixing device on relief valve, supports platform and is fixed on column, and column lower end is threaded, and column passes bidirectional ratchet
After the corresponding aperture of hydraulic actuator, the screw with fixing device is connected, and bidirectional ratchet hydraulic actuator is fixed on fixing dress simultaneously
Putting above, column quantity is at least 2.
The invention has the beneficial effects as follows: driving cursor by power hydraulic cylinder, pivoted arm upper and lower surfaces are respectively arranged
Ratchet, a use when ratchet assembly rotates forward, use when ratchet assembly rotates backward for one.When rotating forward, reverse ratchet
By unidirectional driving, mechanism is withstood, it is impossible to contact with ratchet assembly, and the changement release that forward ratchet is corresponding, forward ratchet is pressed in
On corresponding ratchet, transmitting positive torque, ratchet assembly just can only rotate forward, otherwise in like manner.During enforcement, bidirectional ratchet hydraulic pressure is held
Row device is fixed on the vavle shelf of relief valve by fixing device, and the valve rod of relief valve and spring force regulation bolt are through two-way spine
Wheel hydraulic actuator so that spring force adjusts bolt and is installed in the working hole of ratchet assembly, working hole shape is adjusted with spring force
Six square nose shapes of whole bolt are suitable, or arrange the most suitable sleeve, driven by the rotation of ratchet assembly
Spring force of moving adjusts bolt, it is achieved the automatic adjustment of the spring force of relief valve.It addition, the present invention also provides for the relief valve school of the whole series
Experiment device, can realize the full-automation of safety valve testing.
Accompanying drawing explanation
Fig. 1 is the perspective view one of bidirectional ratchet hydraulic actuator；
Fig. 2 is the perspective view two of bidirectional ratchet hydraulic actuator；
Fig. 3 is the top view of bidirectional ratchet hydraulic actuator；
Fig. 4 is the front view of bidirectional ratchet hydraulic actuator；
Fig. 5 is the perspective view after testing device of safety valve assembles with relief valve；
Fig. 6 is the schematic diagram of testing device of safety valve complete equipment；
Labelling in figure: 11-vavle shelf, 12-spring force adjust bolt, 13-valve rod, 14-hydraulic power unit, 15-electric-controlled
Unit processed, 16-pressure medium sensor, 17-relief valve are opened and are judged sensor, 18-smart mobile phone, 19-power supply, the two-way spine of 2-
Wheel hydraulic actuator, 3-lifting hydraulic cylinder, 4-force transducer, 5-support platform, 6-column, 7-adapter, 8-fixing device, 9-set
Cylinder, 21-frame, 22-ratchet assembly, 23-forward ratchet, the reverse ratchet of 24-, 25-cursor, 26-ratchet, 27-unidirectional driving
Mechanism, 28-power hydraulic cylinder, 29-back-moving spring.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figures 1-4, bidirectional ratchet hydraulic actuator 2, it is characterised in that: include frame 21, the company of rotation in frame 21
Ground connection is provided with ratchet assembly 22, and ratchet assembly 22 includes forward ratchet 23, the reverse ratchet 24 that concentric arranges, forward ratchet 23
Being connected by cooperation tenon each other with between reverse ratchet 24, ratchet assembly 22 is between forward ratchet 23, reverse ratchet 24
Being provided with concentric column (i.e. three is coaxial), concentric column periphery is arranged with cursor 25, and the upper and lower surfaces of cursor 25 are divided
Not hinge ground connection is provided with ratchet 26, and wherein a ratchet 26 is suitable with the ratchet of forward ratchet 23, another ratchet 26 and reverse spine
Wheel 24 ratchet suitable, two ratchets 26 are all equipped with unidirectional driving mechanism 27, cursor 25 both sides be hinged respectively for
Driving the power hydraulic cylinder 28 that cursor 25 rotates, the other end of two power hydraulic cylinders 28 is hinged and is connected to frame 21 both sides, ratchet
Assembly 22 is disposed with working hole along its axis direction, and working hole is through hole.Being rotationally connected between frame 21 and ratchet assembly 22
Realization can be coordinated with the shaft sleeve part of frame 21 correspondence position by the shaft at ratchet assembly 22 two ends, for simplifying apparatus structure,
Shaft sleeve part is positioned at frame 21 top and bottom, and frame 21 whole height is the most identical with ratchet assembly 22.Due to executor's rotating speed
Low, amount of spin is little, therefore need not in rotation system install bearing, in order to reduce volume weight.For convenience of assembling when using, two-way
The frame 21 of ratchet hydraulic actuator 2 is set to two-piece formula structure.In ratchet assembly 22, forward ratchet 23 can be located at
Top, it is possible to reverse ratchet 24 is located at top, the present embodiment uses is located at top by forward ratchet 23.
During enforcement, bidirectional ratchet hydraulic actuator 2 is fixed on the vavle shelf 11 of relief valve by fixing device 8, peace
The valve rod 13 of full valve and spring force regulation bolt 12 are through bidirectional ratchet hydraulic actuator 2 so that spring force adjusts bolt 12 and fills
Being located in the working hole of ratchet assembly 22, the six square nose shapes that working hole shape adjusts bolt 12 with spring force are suitable,
Or the most suitable sleeve 9 is set, carrys out motive spring force by the rotation of ratchet assembly 22 and adjust bolt 12, it is achieved safety
The automatic adjustment of the spring force of valve.For convenience of assembling, preferred implementation is, arranges the sleeve 9 matched, and now working hole is
Profiled holes, is non-circular hole, and preferable shape is quincunx hole, i.e. includes circular datum hole, between the excircle direction of circular datum hole
Every arranging multiple petal bar-shaped trough.
It addition, unidirectional driving mechanism 27 is preferably hydraulic cylinder, a hydraulic power list can be shared with power hydraulic cylinder 28
Unit, simplifies apparatus structure, implements more convenient.Unidirectional driving mechanism 27 can also select electromagnetism push rod.
Preferably, two ratchets 26 are all equipped with back-moving spring 29, when ratchet 26 departs from ratchet assembly 22, compress reset bullet
Spring 29, when needing ratchet 26 to be pressed on the ratchet of correspondence, can be by the elastic reset of back-moving spring 29.
Keep consistent for making the action of two cylinders exert oneself, the oil pipe of two power hydraulic cylinders 28 uses reverse parallel connection mode.
Preferably, the impulse stroke two ends of power hydraulic cylinder 28 are equipped with travel switch respectively.Power hydraulic cylinder 28 every time
Stroke, to just triggering reversal valve commutation, power hydraulic cylinder 28 inverted running during the limit, the most repeatedly, and then realizes pawl wheel and obtains
To continue.Owing to spring force adjusts bolt 12 very tightly, so ratchet will not and then reverse when power hydraulic cylinder 28 no-load return trip,
Need not consider to arrange anti kickback attachment.
Preferably, it is provided with the position for measuring ratchet assembly 22 amount of spin signal between ratchet assembly 22 and frame 21 to pass
Sensor, for the Automatic Control of safety valve testing.
As shown in Figure 5, Figure 6, testing device of safety valve includes above-mentioned bidirectional ratchet hydraulic actuator 2, bidirectional ratchet liquid
The frame 21 of pressure executor 2 is fixed above is provided with support platform 5, supports and is provided with lifting hydraulic cylinder 3 on platform 5, lifting hydraulic cylinder 3
Piston rod is provided with the adapter 7 for connecting valve rod 13, and lifting hydraulic cylinder 3 is equipped with the force transducer 4 measuring its lifting force, spine
The position sensor for measuring ratchet assembly 22 amount of spin signal, power hydraulic cylinder it is provided with between wheel assembly 22 and frame 21
28, lifting hydraulic cylinder 3 is connected to hydraulic power unit 14, and force transducer 4, position sensor, hydraulic power unit 14 are the most electric
Being connected to electric control unit 15, electric control unit 15 is additionally provided with pressure medium sensor 16, relief valve is opened and judged sensing
Device 17.
Preferably, the control terminal of electric control unit 15 is smart mobile phone 18, and smart mobile phone 18 can use data wire even
Connect, it is possible to use wireless connections.After instrument installs, the every operation of safety valve testing is all by complete on the touch screen of mobile phone
Become, verify when instrument unloads and the most accurately terminate.After all valves verifys we to return to the room of doing printing automatic by mobile phone
The standard report filled in.Computer before using smart mobile phone to replace is as data processing tools so that verification work
Make more convenient.
Preferably, it is equipped for testing device of safety valve is fixed bottom the frame 21 of bidirectional ratchet hydraulic actuator 2
Fixing device 8 on relief valve.Testing device of safety valve can be securely clamped in the valve of relief valve by fixing device 8
Above frame 11, and there is positioning function, ensure position degree to a certain extent.According to different vavle shelf structures, fixing device 8 has
Institute is different.It addition, support platform 5 and bidirectional ratchet hydraulic actuator 2 can realize fixing in the following way: support platform 5 is fixing to be set
On column 6, column 6 lower end is threaded, and is equivalent to bolt, after column 6 passes the corresponding aperture of bidirectional ratchet hydraulic actuator 2
It is connected with the screw of fixing device 8, tightens column 6 and bidirectional ratchet hydraulic actuator 2 will be fixed on fixing device 8 well
On, column 6 quantity is at least 2, can be arranged as required to, and for optimizing apparatus structure, is preferably arranged to 2 or 3, this enforcement
Example is set to 3.Support can be realized fixing connection between platform 5 and column 6, height according to specific needs by skid-prevention button
Support platform 5 is locked on column 6.
During enforcement, by fixing device 8, the main part of testing device of safety valve can be fixed on the vavle shelf 11 of relief valve
On, the valve rod 13 of relief valve and spring force adjust bolt 12 through bidirectional ratchet hydraulic actuator 2 so that spring force adjusts bolt
In 12 working holes being installed in ratchet assembly 22, valve rod 13 top of relief valve then with the company of lifting hydraulic cylinder 3 piston-rod lower end
Connect device 7 threaded.
The workflow of testing device of safety valve and principle:
After condition possesses, starting device is started working.
Smart mobile phone 18 starts checking routine, after Programmable detection is normal, sends verification sign on, electrical control list
Instruction is converted to operate signal and controls electric hydraulic pump and electro hydraulic valve pressurizes to lifting hydraulic cylinder 3 gradually by unit 15, promotes
Hydraulic cylinder 3 give valve rod 13 to be lifted up power increasing, until lifting force and medium are to the active force sum of spool just etc.
When the elastic force of spring, relief valve starts to open, and medium spills, and it is concurrent that relief valve unlatching judges that sensor 17 obtains opening signal
Toward electric control unit 15.The pressure signal that pressure medium sensor 16 transmits simultaneously, the lifting hydraulic pressure that force transducer 4 detects
The lifting force signal of cylinder 3 is all mailing to electric control unit 15.Electric control unit 15 is continued in real time the letter received
After number carrying out analog digital conversion, forming the data stream that smart mobile phone 18 can identify and mail to smart mobile phone 18, smart mobile phone 18 just can be real
Time reception process these data.When obtaining after relief valve opens and judge the unlatching signal that sensor 17 sends, smart mobile phone 18 is vertical
Horse records various data signals now, is simultaneously emitted by instructing and allows lifting by electric control unit 15 action electro hydraulic valve
Hydraulic cylinder 3 pressure release makes relief valve close, and then carries out operational analysis according to the design parameter of relief valve.If finding to open pressure not
Qualified, 18 spring forces of smart mobile phone adjust signal and are sent to electric control unit 15,15 signals received of electric control unit
Being converted to operate signal and remove action electro hydraulic valve, select adjustment direction, direction performs, so by controlling unidirectional driving mechanism 27
Rear steering maneuver hydraulic cylinder 28, allows bidirectional ratchet hydraulic actuator 2 start working, to spring force adjust bolt 12 reverse with
Adjust spring force.Meanwhile the amount of spin signal of ratchet assembly 22 is also sent to intelligence continuously through electric control unit 15
Mobile phone 18, when smart mobile phone 18 finds that just sending signal when adjustment amount reaches quits work by bidirectional ratchet hydraulic actuator 2.Adjust
Whole complete after, smart mobile phone 18 again run unlatching pressure detecting program, lifting hydraulic cylinder 3 starts again at work, each sensor
Also in continuous firing, again unlatching pressure is detected, as before.If qualified after detection, verify successfully, if not conforming to
Lattice then continue to adjust, then detect.The most repeatedly, until qualified.
In practice, detection often repeats two to three times, to ensure accurately.Due to the reason of field condition,
Some or all sensor is likely to use, and changes other method into and determine and be then manually entered.These problems can
Operation is set inside software.
The present invention can realize the full-automation of safety valve testing.
Claims (10)
1. bidirectional ratchet hydraulic actuator (2), it is characterised in that: include that frame (21), frame are provided with on (21) with being rotationally connected
Ratchet assembly (22), ratchet assembly (22) includes forward ratchet (23), the reverse ratchet (24) that concentric arranges, forward ratchet
(23) be connected by cooperation tenon each other with between reverse ratchet (24), ratchet assembly (22) at forward ratchet (23), reversely
Being provided with concentric column between ratchet (24), concentric column periphery is arranged with cursor (25), two up and down of cursor (25)
Face hinge ground connection respectively is provided with ratchet (26), and wherein a ratchet (26) is suitable with the ratchet of forward ratchet (23), another ratchet
(26) suitable with the ratchet of reverse ratchet (24), two ratchets (26) are all equipped with unidirectional driving mechanism (27), cursor (25)
Both sides are hinged the power hydraulic cylinder (28) for driving cursor (25) to rotate respectively, another of two power hydraulic cylinders (28)
End hinge is connected to frame (21) both sides, and ratchet assembly (22) is disposed with working hole along its axis direction, and working hole is through hole.
2. bidirectional ratchet hydraulic actuator (2) as claimed in claim 1, it is characterised in that: working hole is profiled holes, working hole
Inside it is equipped with sleeve (9).
3. bidirectional ratchet hydraulic actuator (2) as claimed in claim 1, it is characterised in that: unidirectional driving mechanism (27) is liquid
Cylinder pressure or electromagnetism push rod.
4. bidirectional ratchet hydraulic actuator (2) as claimed in claim 1, it is characterised in that: two ratchets (26) are all equipped multiple
Position spring (29).
5. bidirectional ratchet hydraulic actuator (2) as claimed in claim 1, it is characterised in that: the oil of two power hydraulic cylinders (28)
Pipe uses reverse parallel connection mode.
6. bidirectional ratchet hydraulic actuator (2) as claimed in claim 1, it is characterised in that: the work of power hydraulic cylinder (28)
Stroke two ends are equipped with travel switch respectively.
7. bidirectional ratchet hydraulic actuator (2) as claimed in claim 1, it is characterised in that: ratchet assembly (22) and frame
(21) position sensor for measuring ratchet assembly (22) amount of spin signal it is provided with between.
8. testing device of safety valve, it is characterised in that: include the bidirectional ratchet hydraulic pressure as according to any one of claim 1～6
Executor (2), the frame (21) of bidirectional ratchet hydraulic actuator (2) is fixed above is provided with support platform (5), supports the upper peace of platform (5)
Equipped with lifting hydraulic cylinder (3), the piston rod of lifting hydraulic cylinder (3) is provided with the adapter (7) for connecting valve rod (13), promotes liquid
Cylinder pressure (3) is equipped with the force transducer (4) measuring its lifting force, is provided with for measuring between ratchet assembly (22) and frame (21)
The position sensor of ratchet assembly (22) amount of spin signal, power hydraulic cylinder (28), lifting hydraulic cylinder (3) are connected to hydraulic power
Unit (14), force transducer (4), position sensor, hydraulic power unit (14) be all electrically connected to electric control unit (15),
Electric control unit (15) is additionally provided with pressure medium sensor (16), relief valve is opened and judged sensor (17).
9. testing device of safety valve as claimed in claim 8, it is characterised in that: the control terminal of electric control unit (15) is
Smart mobile phone (18).
10. testing device of safety valve as claimed in claim 8, it is characterised in that: the frame of bidirectional ratchet hydraulic actuator (2)
(21) bottom is equipped for testing device of safety valve is fixed on the fixing device (8) above relief valve, supports platform (5) and fixes
Being located on column (6), column (6) lower end is threaded, after column (6) passes the corresponding aperture of bidirectional ratchet hydraulic actuator (2)
It is connected with the screw of fixing device (8), bidirectional ratchet hydraulic actuator (2) is fixed on fixing device (8) above, column simultaneously
(6) quantity is at least 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610720644.7A CN106246854B (en) | 2016-08-24 | 2016-08-24 | Bidirectional ratchet hydraulic actuator and testing device of safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610720644.7A CN106246854B (en) | 2016-08-24 | 2016-08-24 | Bidirectional ratchet hydraulic actuator and testing device of safety valve |
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| Publication Number | Publication Date |
|---|---|
| CN106246854A true CN106246854A (en) | 2016-12-21 |
| CN106246854B CN106246854B (en) | 2018-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610720644.7A Active CN106246854B (en) | 2016-08-24 | 2016-08-24 | Bidirectional ratchet hydraulic actuator and testing device of safety valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764000A (en) * | 2017-01-13 | 2017-05-31 | 温州欧拉姆品牌运营管理中心（有限合伙） | A kind of integral and intelligent hydraulic pressure torsion drive device |
| CN106872160A (en) * | 2017-03-10 | 2017-06-20 | 武汉市锅炉压力容器检验研究所 | One kind is without valve rod spring loaded safety valve on-line testing device |
| CN109938939A (en) * | 2019-04-29 | 2019-06-28 | 江苏苏云医疗器材有限公司 | Flat push lever driving device and wheelchair suitable for wheelchair |
| CN110486424A (en) * | 2019-09-19 | 2019-11-22 | 广东肇庆爱龙威机电有限公司 | Planetary Gear Transmission case |
| CN112605933A (en) * | 2020-11-24 | 2021-04-06 | 中国石油集团渤海钻探工程有限公司 | Hydraulic wrench |
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| CN201203534Y (en) * | 2008-05-28 | 2009-03-04 | 北京沙驼石化工程技术开发有限公司 | Safety valve on-line checkout apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106764000A (en) * | 2017-01-13 | 2017-05-31 | 温州欧拉姆品牌运营管理中心（有限合伙） | A kind of integral and intelligent hydraulic pressure torsion drive device |
| CN106872160A (en) * | 2017-03-10 | 2017-06-20 | 武汉市锅炉压力容器检验研究所 | One kind is without valve rod spring loaded safety valve on-line testing device |
| CN109938939A (en) * | 2019-04-29 | 2019-06-28 | 江苏苏云医疗器材有限公司 | Flat push lever driving device and wheelchair suitable for wheelchair |
| CN110486424A (en) * | 2019-09-19 | 2019-11-22 | 广东肇庆爱龙威机电有限公司 | Planetary Gear Transmission case |
| CN112605933A (en) * | 2020-11-24 | 2021-04-06 | 中国石油集团渤海钻探工程有限公司 | Hydraulic wrench |
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|---|---|
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