CN106246854B - Bidirectional ratchet hydraulic actuator and testing device of safety valve - Google Patents
Bidirectional ratchet hydraulic actuator and testing device of safety valve Download PDFInfo
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- CN106246854B CN106246854B CN201610720644.7A CN201610720644A CN106246854B CN 106246854 B CN106246854 B CN 106246854B CN 201610720644 A CN201610720644 A CN 201610720644A CN 106246854 B CN106246854 B CN 106246854B
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- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims 1
- 238000012795 verification Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
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- 235000009566 rice Nutrition 0.000 description 1
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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
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
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 rack, rotation connection ground is equipped with ratchet assembly in rack, ratchet assembly includes the positive ratchet of concentric setting, reversed ratchet, it is connected by mutual cooperation tenon between positive ratchet and reversed ratchet, the concentric column periphery being arranged among ratchet assembly is arranged with cursor, the upper and lower surfaces of cursor are hinged ground connection equipped with pawl respectively, a wherein pawl is adapted with the ratchet of positive ratchet, another pawl is adapted with the ratchet of reversed ratchet, two pawls are equipped with unidirectional driving mechanism, cursor both sides are hinged the power hydraulic cylinder for being useful for driving cursor rotation respectively, the other end hinge of two power hydraulic cylinders is connected to rack both sides, ratchet assembly is disposed with working hole along its axis direction, working hole is through-hole.In addition, the present invention also provides a whole set of testing device of safety valve, it can be achieved that the full-automation of safety valve testing.
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
Safety valve is that opening and closing element is in normally off under by outer force effect, is surpassed when the pressure medium in equipment or pipeline increases
When crossing specified value, by outside system discharge medium come to prevent pressure medium in pipeline or equipment be more than the particular usage valve of specified value
Door.Safety valve belongs to automatic valve class, is mainly used for boiler, on pressure vessels and pipes, and control pressure is no more than specified value, to people
Body safety and equipment have run important protective effect.Safety valve is a kind of special equipment.Safety valve has to pass through pressure testing (i.e.
Verification, pet phrase claim to debug) it could use.
A kind of most common safety valve is spring loaded safety valve.Spring loaded safety valve (hereinafter referred to as safety valve) is to rely on bullet
The elastic pressure of spring and by the sealing elements such as spool of safety valve (or flap) (or opening and closing element) be latched.Once by protection equipment
Pressure medium increase, when the pressure of generation be more than safety valve setting unlatching value when, pressure medium will overcome the bullet of safety valve
Spring pressure causes sealing element open-top, forms a pressure release passage, and media discharge is reduced by protection equipment pressure,
When pressure falls below the closing pressure of safety valve, safety valve can be automatically closed again.It is just such to ensure safety.
Safety valve is often dismantled by maintenance, or is influenced by various environmental factors so that spring acts on spool
Power change and can not ensure safety, in order to allow this power to be maintained in claimed range, just must by regulation to safety valve
It is verified, reaches the unlatching value of our needs.
The verification mode of safety valve can be divided into offline verification and two big mode of on-line testing：
One, offline verification is mainly verified by checking table, is exactly that safety valve is mounted on checking table, is then used school
Testing medium makes safety valve open, and confirms Opening pressure by observing pressure gauge.Then spring force is according to circumstances adjusted, is surveyed repeatedly
Examination, until reaching requirement.This method can not accurately verify the safety valve of back pressure relief valve and high temperature cryogenic media.
Further more, offline verification, which needs safety valve to disassemble, is transported to verification room, installation is transported back again after school is good, in this way
One to increase many workloads, and can also delay production because of separating for valve.
Thus people have invented on-line testing again.
Two, on-line testing.
1, online boosting is real to jump method.Be exactly safety valve in systems, system is artificially boosted, until safety valve open, to see
Then the Opening pressure for examining safety valve according to circumstances adjusts spring force, tests repeatedly, until reaching requirement.It is as a result very accurate,
Without dismantling safety valve.But this method is larger to the sealing face damage of safety valve, and operational danger is larger, and spy expends resource,
Speed is also very slow.Due to will lifting pressure repeatedly, can also delay production.
Then the mode of on-line instrument verification has been invented again.
2, on-line instrument check addition.External force is exactly applied by instrument and will act at acting force of the spring downward on safety valve
It measures, the Opening pressure of safety valve is calculated with this, then according to circumstances adjust spring force, test repeatedly, wanted until reaching
It asks.This method does not influence production generally, system pressure does not have to change, and valve does not have to dismounting, and detection speed is convenient than very fast,
Consuming resource is few, and economical and efficient can verify, as a result accurately under actual condition.
Therefore, on-line instrument verification is current most popular verification mode.Safety valve on-line testing instrument just closes very much naturally
Key.
The principle of on-line instrument verification：
Apply a power opposite with spring force with instrument to overcome active force of the spring for spool, this power is gradual
It increases.The pressure of medium is also overcoming spring force simultaneously, therefore the force effect that it applies with instrument is consistent.When with instrument
Safety valve may turn on when the power that device applies is gradually increased to a certain value, and the power that instrument applies is able to know that, is denoted as Fh.It is situated between
Pressure (actually pressure, only industrial to be accustomed to being pressure) P of matter, being can be measured, the area S that spool is acted on by medium
It is being calculated or known, so the directed force F n=P*S of medium is known that.It is when being just turned on due to valve
Because the active force of instrument just overcomes the directed force F s of spring plus the active force of medium, formula is obtained：
Thus Fs=Fh+Fn=Fh+P*S can acquire Fs.Acting force of the spring acquires, then medium is in how high pressure
It could allow safety valve unlatching that can also calculate, Opening pressure is denoted as Ps, Ps=Fs/S.
Then the Opening pressure of Ps and our needs is compared, spring force is adjusted according to comparing result.It is examined again after adjustment
Survey whether Ps meets the requirements, testing and debugging is until meeting the requirements repeatedly.
The adjustment of spring force --- if practical Opening pressure is just clockwise with spanner less than the Opening pressure range needed
Twist six sides of spring force adjusting bolt in direction, and bolt pushes, and spring is compressed, and is increased according to Hooke's law acting force of the spring.Such as
Fruit border Opening pressure reduces higher than the Opening pressure range needed, then torsion spring power adjusting bolt counterclockwise, acting force of the spring.
Spring force adjusting bolt is plus thread.
One, initial on-line testing instrument：
Instrument is made of two major parts of castering action power bringing device and force checking device and some auxiliaries.Pass through it
Dedicated hydraulic cylinder or screw apply castering action power, and the size contributed by detection device measuring and calculating to safety valve.From
Apply lifting force, valve opening judgement, data processing in the process, the adjustment of spring force, until the verification after the completion of verification
Report is filled in, and is all by being accomplished manually.This is full type hand.
Two, present on-line testing instrument：
People in front on the basis of by some electromechanical integration transformation after again add computer to data at
Reason, has obtained present tester.Type there are many in present tester industry, but it is similar.In checking procedure very
Multiplexing has been achieved with automation, and the work of people reduces, and efficiency improves.At present multi-party surface technology achieve maturation and into
Step.
But a working link most heavy in checking procedure also needs to manually to complete even to this day, and here it is adjustment
Spring force, it is especially prominent especially for big safety valve.The torque that spring force adjusting bolt needs 1000 Ns of rice or so is pulled,
Three people are needed to pull with strength, very tightly.And an instrument must once be loaded and unloaded again by adjusting, pretty troublesome, very time-consuming.Also exist
People will stand on valve side when dismounting instrument and adjustment spring force, for the safety valve of high temperature and pressure and poisonous medium, people
The work risk near valve of standing is very high, and operating condition is very severe.When adjusting spring force, torsion can also be applied to safety
Above the attachment weld or flange of valve, there is certain influence to junction.It is intended to be eager further more, people works in the presence of a harsh environment
Completion is left, and often finishes the work perfunctorily, and influences checking precision.A problem is also that tester needs lighting.
Routinely situation considers, the adjust automatically actuator of spring force first need to have claimed below：
(1), large torque.Have to export 1000 Ns meters or more of large torque.
(2), small size.According to the design feature of safety valve and requirement easy for installation is carried, this actuator volume cannot
It is excessive.It substantially requires, long without departing from 35 centimeters, wide without departing from 25 centimeters, height is without departing from 10 centimeters.Weight is light as possible.
(3), it two-way can turn round, rotation direction easy switching, amount of spin is controllable more, it is known that.
(4), center of rotation is hollow, and unimpeded up and down, and spring force adjusting bolt can be allowed to pass through and fitted by sleeve
Match.
By investigation and comparison, in big torque force device in the prior art, device for providing torque amplification, hydraulic motor, hydraulic spanner, gas
The devices such as wrench cannot meet above-mentioned requirements.
Due to not finding the ready-made device that can be met the requirements, thus can only brand-new design one can meet the requirements
Device adjusts actuator for making spring force.
Invention content
The technical problem to be solved by the present invention is to：There is provided a kind of bidirectional ratchet hydraulic actuator so that the bullet of safety valve
Spring force can adjust automatically, in addition, correspondingly providing a kind of testing device of safety valve so that safety valve testing is realized full-automatic.
The technical solution adopted in the present invention is to solve above-mentioned technical problem：Bidirectional ratchet hydraulic actuator, including machine
Frame, rotation connection ground is equipped with ratchet assembly in rack, and ratchet assembly includes the positive ratchet of concentric setting, reversed ratchet, just
It is connected between ratchet and reversed ratchet by mutual cooperation tenon, ratchet assembly is set between positive ratchet, reversed ratchet
It is equipped with concentric column, concentric column periphery is arranged with cursor, and the upper and lower surfaces of cursor, which are hinged to be grounded respectively, is equipped with pawl,
A wherein pawl is adapted with the ratchet of positive ratchet, another pawl is adapted with the ratchet of reversed ratchet, and two pawls are arranged
There are unidirectional driving mechanism, cursor both sides to be hinged the power hydraulic cylinder for being useful for driving cursor rotation, two power fluids respectively
The other end hinge of cylinder pressure is connected to rack both sides, and ratchet assembly is disposed with working hole along its axis direction, and working hole is through-hole.
It is further：Working hole is profiled holes, and sleeve is equipped in working hole.
It is further：Unidirectional driving mechanism is hydraulic cylinder or electromagnetism push rod.
It is further：Two pawls are equipped with resetting spring.
It is further：The oil pipe of two power hydraulic cylinders uses reverse parallel connection mode.
It is further：The impulse stroke both ends of power hydraulic cylinder have been separately equipped with travel switch.
It is further：The position sensing for measuring ratchet assembly amount of spin signal is equipped between ratchet assembly and rack
Device.
Testing device of safety valve, including above-mentioned bidirectional ratchet hydraulic actuator, the rack of bidirectional ratchet hydraulic actuator
Top is fixed with supporting table, and lifting hydraulic cylinder is equipped in supporting table, and the piston rod of lifting hydraulic cylinder, which is equipped with, is used for connection valve
The connector of bar, lifting hydraulic cylinder are equipped with the force snesor for measuring its lifting force, are equipped with and are used between ratchet assembly and rack
The position sensor of ratchet assembly amount of spin signal is measured, power hydraulic cylinder, lifting hydraulic cylinder are connected to hydraulic power unit, power
Sensor, position sensor, hydraulic power unit are electrically connected to electric control unit, and electric control unit is additionally provided with medium
Pressure sensor, safety valve unlatching judge sensor.
It is further：The control terminal of electric control unit is smart mobile phone.
It is further：The bottom of the frame of bidirectional ratchet hydraulic actuator is equipped for fixing testing device of safety valve
Fixing device on safety valve, supporting table are fixed on column, and column lower end is threaded, and column passes through bidirectional ratchet
It is connect with the screw hole of fixing device after the corresponding aperture of hydraulic actuator, while bidirectional ratchet hydraulic actuator is fixed on fixed dress
It sets above, column quantity is at least 2.
The beneficial effects of the invention are as follows：Cursor is driven by power hydraulic cylinder, pivoted arm upper and lower surfaces are respectively arranged
Pawl, one is used when ratchet assembly rotates forward, and one is used when ratchet assembly rotates backward.When rotating forward, reversed pawl
By unidirectional driving, mechanism is withstood, and can not be contacted with ratchet assembly, and the corresponding changement release of positive pawl, positive pawl is pressed in
On corresponding ratchet, positive torque is transmitted, ratchet assembly just can only rotate forward, otherwise similarly.When implementation, bidirectional ratchet hydraulic pressure is held
Row device is fixed at by fixing device on the vavle shelf of safety valve, and the valve rod and spring force adjusting bolt of safety valve pass through two-way spine
Take turns hydraulic actuator so that spring force adjustment bolt is installed in the working hole of ratchet assembly, work hole shape and spring force tune
Six square head shapes of whole bolt are adapted, or compatible sleeve therewith is arranged, and are driven by the rotation of ratchet assembly
Spring force of moving adjustment bolt, realizes the adjust automatically of the spring force of safety valve.In addition, the present invention also provides a whole set of safety valve schools
Experiment device, it can be achieved that safety valve testing full-automation.
Description of the drawings
Fig. 1 is the dimensional structure diagram one of bidirectional ratchet hydraulic actuator；
Fig. 2 is the dimensional structure diagram two of bidirectional ratchet hydraulic actuator；
Fig. 3 is the vertical view of bidirectional ratchet hydraulic actuator；
Fig. 4 is the front view of bidirectional ratchet hydraulic actuator；
Fig. 5 is testing device of safety valve and the dimensional structure diagram after safety valve assembly；
Fig. 6 is the schematic diagram of testing device of safety valve complete equipment；
It is marked in figure：11- vavle shelves, 12- spring forces adjustment bolt, 13- valve rods, 14- hydraulic power units, 15- electric-controlleds
Unit processed, 16- pressure mediums sensor, the unlatching of 17- safety valves judge sensor, 18- smart mobile phones, 19- power supplys, the two-way spine of 2-
Take turns hydraulic actuator, 3- lifting hydraulic cylinders, 4- force snesors, 5- supporting tables, 6- columns, 7- connectors, 8- fixing devices, 9- sets
Cylinder, 21- racks, 22- ratchet assemblies, 23- forward directions ratchet, the reversed ratchets of 24-, 25- cursors, 26- pawls, 27- unidirectional drivings
Mechanism, 28- power hydraulic cylinders, 29- resetting springs.
Specific implementation mode
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：Including rack 21, the company of rotation in rack 21
Ground connection is equipped with ratchet assembly 22, and ratchet assembly 22 includes positive ratchet 23, the reversed ratchet 24 of concentric setting, positive ratchet 23
It is connect by mutual cooperation tenon between reversed ratchet 24, ratchet assembly 22 is between positive ratchet 23, reversed ratchet 24
It is provided with concentric column (i.e. three is coaxial), concentric column periphery is arranged with cursor 25, the upper and lower surfaces point of cursor 25
It Jiao Lian not be grounded and be equipped with pawl 26, wherein a pawl 26 is adapted with the ratchet of positive ratchet 23, another pawl 26 and reversed spine
The ratchet of wheel 24 is adapted, and two pawls 26 are equipped with unidirectional driving mechanism 27, and 25 both sides of cursor are hinged respectively to be useful for
The other end hinge of the power hydraulic cylinder 28 for driving cursor 25 to rotate, two power hydraulic cylinders 28 is connected to 21 both sides of rack, ratchet
Component 22 is disposed with working hole along its axis direction, and working hole is through-hole.Rotation connection between rack 21 and ratchet assembly 22
It can be coordinated with the shaft sleeve part of 21 corresponding position of rack by the shaft at 22 both ends of ratchet assembly and be realized, to simplify apparatus structure,
Shaft sleeve part is located at 21 top and bottom of rack, and 21 whole height of rack is identical as 22 height of ratchet assembly.Due to actuator rotating speed
Low, amount of spin is small, therefore bearing need not be installed in rotation system, to reduce volume weight.It is assembled for convenience of when using, it is two-way
The rack 21 of ratchet hydraulic actuator 2 is set as two-piece formula structure.In ratchet assembly 22, positive ratchet 23 can be set to
Reversed ratchet 24, can be also set to top by top, and the present embodiment is set to top using by positive ratchet 23.
When implementation, bidirectional ratchet hydraulic actuator 2 is fixed at by fixing device 8 on the vavle shelf 11 of safety valve, is pacified
The valve rod 13 and spring force adjusting bolt 12 of full valve pass through bidirectional ratchet hydraulic actuator 2 so that spring force adjustment bolt 12 fills
In the working hole of ratchet assembly 22, work hole shape is adapted with six square head shapes of spring force adjustment bolt 12,
Or compatible sleeve 9 realizes safety by the rotation of ratchet assembly 22 come motive spring force adjustment bolt 12 therewith for setting
The adjust automatically of the spring force of valve.For convenience of assembly, preferred embodiment is that the sleeve 9 to match is arranged, and working hole is at this time
Profiled holes, as non-circular hole, preferable shape are quincunx hole, that is, include round datum hole, between the outer circle circumferential direction of round datum hole
Every the multiple petal bar-shaped troughs of setting.
In addition, unidirectional driving mechanism 27 is preferably hydraulic cylinder, a hydraulic power list can be shared with power hydraulic cylinder 28
Member simplifies apparatus structure, implements more convenient.Unidirectional driving mechanism 27 can also select electromagnetism push rod.
Preferably, two pawls 26 are equipped with resetting spring 29, and when pawl 26 is detached from ratchet assembly 22, compression resets bullet
Spring 29 can be by the elastic reset of resetting spring 29 when needing pawl 26 to be pressed on corresponding ratchet.
To make the action output of two cylinders be consistent, the oil pipe of two power hydraulic cylinders 28 uses reverse parallel connection mode.
Preferably, the impulse stroke both ends of power hydraulic cylinder 28 have been separately equipped with travel switch.Each power hydraulic cylinder 28
Stroke repeatedly, and then realizes that ratchet wheel obtains to reversal valve commutation, 28 inverted running of power hydraulic cylinder is just triggered when the limit
To continue.Since spring force adjustment bolt 12 is very tight, so ratchet will not be reversed and then in 28 no-load return trip of power hydraulic cylinder,
Without considering that anti kickback attachment is arranged.
Preferably, the position for measuring 22 amount of spin signal of ratchet assembly is equipped between ratchet assembly 22 and rack 21 to pass
Sensor is used 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
It presses 21 top of rack of actuator 2 to be fixed with supporting table 5, lifting hydraulic cylinder 3 is installed in supporting table 5, lifting hydraulic cylinder 3
Piston rod is equipped with the connector 7 for connecting valve rod 13, and lifting hydraulic cylinder 3 is equipped with the force snesor 4 for measuring its lifting force, spine
The position sensor for measuring 22 amount of spin signal of ratchet assembly, power hydraulic cylinder are equipped between wheel assembly 22 and rack 21
28, lifting hydraulic cylinder 3 is connected to hydraulic power unit 14, and force snesor 4, position sensor, hydraulic power unit 14 are electrical
It is connected to electric control unit 15, electric control unit 15 is additionally provided with pressure medium sensor 16, safety valve is opened and judges sensing
Device 17.
Preferably, the control terminal of electric control unit 15 is smart mobile phone 18, and data line company can be used in smart mobile phone 18
It connects, wireless connection can also be used.After instrument installs, the every operation of safety valve testing all will be complete on the touch screen of mobile phone
At verifying when instrument unloads and accurately terminate.It is automatic by mobile phone to return to the room of doing printing for we after the completion of whole valve verifications
Fill in the standard report of completion.Replace pervious computer as data processing tools using smart mobile phone so that verification work
It is more convenient.
Preferably, 21 bottom of rack of bidirectional ratchet hydraulic actuator 2 is equipped for fixing testing device of safety valve
Fixing device 8 on safety valve.Testing device of safety valve can be securely clamped in the valve of safety valve by fixing device 8
Above frame 11, and there is positioning function, ensures position degree to a certain extent.According to different vavle shelf structures, fixing device 8 has
Institute is different.In addition, supporting table 5 and bidirectional ratchet hydraulic actuator 2 can realize fixation in the following way：The fixation of supporting table 5 is set
In on column 6,6 lower end of column is threaded, and bolt is equivalent to, after column 6 passes through the corresponding aperture of bidirectional ratchet hydraulic actuator 2
It is connect with the screw hole of fixing device 8, fixing device 8 will be fixed on well bidirectional ratchet hydraulic actuator 2 by tightening column 6
On, 6 quantity of column is at least 2, can be arranged as required to, and to optimize apparatus structure, is preferably arranged to 2 or 3, this implementation
It is set as 3 in example.Being fixedly connected between supporting table 5 and column 6 can be realized by skid-prevention button, height according to specific needs
Supporting table 5 is locked on column 6.
When implementation, the main part of testing device of safety valve can be fixed on to the vavle shelf 11 of safety valve by fixing device 8
On, the valve rod 13 and spring force adjustment bolt 12 of safety valve pass through bidirectional ratchet hydraulic actuator 2 so that spring force adjustment bolt
12 are installed in the working hole of ratchet assembly 22,13 top of the valve rod of the safety valve then company with 3 piston-rod lower end of lifting hydraulic cylinder
Connect the threaded connection of device 7.
The workflow and principle of testing device of safety valve：
After condition has, starting device is started to work.
Start checking routine on smart mobile phone 18, verification sign on, electrical control list are sent out after Programmable detection is normal
Instruction is converted to operation signal control electric hydraulic pump to member 15 and electro hydraulic valve pressurizes to lifting hydraulic cylinder 3 gradually, is promoted
Hydraulic cylinder 3 is lifted up that power is increasing to valve rod 13, until lifting force and medium to the sum of active force of spool just etc.
When the elastic force of spring, safety valve starts to open, and medium leaks out, and it is concurrent that safety valve unlatching judges that sensor 17 obtains open signal
Toward electric control unit 15.The pressure signal that pressure medium sensor 16 transmits simultaneously, the promotion hydraulic pressure that force snesor 4 detects
The promotion force signal of cylinder 3 is all being sent to electric control unit 15.Electric control unit 15 is continued in real time the letter received
After number carrying out analog-to-digital conversion, forms the data flow that can identify of smart mobile phone 18 and be sent to smart mobile phone 18, smart mobile phone 18 just can be real
When receive handle these data.When obtain safety valve unlatching judge the open signal that sensor 17 is sent out after, smart mobile phone 18 stand
Horse records various data-signals at this time, is simultaneously emitted by instruction and allows promotion by the action electro hydraulic valve of electric control unit 15
3 pressure release of hydraulic cylinder makes safety valve close, and then carries out operational analysis according to the design parameter of safety valve.If it was found that Opening pressure is not
Spring force adjustment signal is sent to electric control unit 15,15 signals received of electric control unit by qualification, smart mobile phone 18
It is converted to operation signal and removes action electro hydraulic valve, select adjustment direction, direction to be executed by controlling unidirectional driving mechanism 27, so
Steering maneuver hydraulic cylinder 28 afterwards, allow bidirectional ratchet hydraulic actuator 2 start to work, to spring force adjustment bolt 12 reversed with
Adjust spring force.At the same time the amount of spin signal of ratchet assembly 22 is also constantly sent to intelligence by electric control unit 15
Mobile phone 18 just sends out signal and is stopped by bidirectional ratchet hydraulic actuator 2 when smart mobile phone 18 finds that adjustment amount reaches.It adjusts
After the completion of whole, smart mobile phone 18 runs Opening pressure detection program again, and lifting hydraulic cylinder 3 starts again at work, each sensor
Also in continue working, Opening pressure is detected again, as before.Success is verified if qualified after detection, if not conforming to
Lattice then continue to adjust, then detect.Repeatedly, until qualification.
In practice, detection often repeats two and arrives three times, accurate to ensure.Due to the reason of field condition,
Some or all sensor may not also can use, and be changed to other methods determinations and then be manually entered.These problems can
The setting operation inside software.
The full-automation of safety valve testing can be achieved in the present invention.
Claims (8)
1. testing device of safety valve, it is characterised in that：Including bidirectional ratchet hydraulic actuator (2), bidirectional ratchet hydraulic actuator
(2) include rack (21), being rotatablely connected ground in rack (21) is equipped with ratchet assembly (22), and ratchet assembly (22) includes concentric sets
Positive ratchet (23), the reversed ratchet (24) set match matching joint between positive ratchet (23) and reversed ratchet (24) by mutual
Head connection, ratchet assembly (22) are provided with concentric column, concentric column periphery between positive ratchet (23), reversed ratchet (24)
It is arranged with cursor (25), the upper and lower surfaces of cursor (25) are hinged ground connection equipped with pawl (26), wherein a pawl respectively
(26) it is adapted with the ratchet of positive ratchet (23), another pawl (26) is adapted with the ratchet of reversed ratchet (24), two pawls
(26) it is equipped with unidirectional driving mechanism (27), cursor (25) both sides are hinged respectively is useful for driving cursor (25) rotation
Power hydraulic cylinder (28), two power hydraulic cylinders (28) the other end hinge is connected to rack (21) both sides, ratchet assembly (22) edge
Its axis direction is disposed with working hole, and working hole is through-hole；
It is fixed with supporting table (5) above the rack (21) of bidirectional ratchet hydraulic actuator (2), is equipped with and carries in supporting table (5)
Hydraulic cylinder (3) is risen, the piston rod of lifting hydraulic cylinder (3) is equipped with the connector (7) for connecting valve rod (13), lifting hydraulic cylinder
(3) it is equipped with the force snesor (4) for measuring its lifting force, is equipped between ratchet assembly (22) and rack (21) for measuring ratchet
The position sensor of component (22) amount of spin signal, power hydraulic cylinder (28), lifting hydraulic cylinder (3) are connected to hydraulic power unit
(14), force snesor (4), position sensor, hydraulic power unit (14) are electrically connected to electric control unit (15), electrically
Control unit (15) is additionally provided with pressure medium sensor (16), safety valve unlatching judges sensor (17).
2. testing device of safety valve as described in claim 1, it is characterised in that：Working hole is profiled holes, is arranged in working hole
There is sleeve (9).
3. testing device of safety valve as described in claim 1, it is characterised in that：Unidirectional driving mechanism (27) is hydraulic cylinder or electricity
Magnetic push rod.
4. testing device of safety valve as described in claim 1, it is characterised in that：Two pawls (26) are equipped with resetting spring
(29)。
5. testing device of safety valve as described in claim 1, it is characterised in that：The oil pipe of two power hydraulic cylinders (28) is using anti-
To parallel way.
6. testing device of safety valve as described in claim 1, it is characterised in that：The impulse stroke both ends of power hydraulic cylinder (28)
It has been separately equipped with travel switch.
7. the testing device of safety valve as described in any one of claim 1 to 6, it is characterised in that：Electric control unit
(15) control terminal is smart mobile phone (18).
8. the testing device of safety valve as described in any one of claim 1 to 6, it is characterised in that：Bidirectional ratchet hydraulic pressure is held
Rack (21) bottom of row device (2) is equipped with the fixing device (8) for being fixed on testing device of safety valve above safety valve,
Supporting table (5) is fixed on column (6), and column (6) lower end is threaded, and column (6) passes through bidirectional ratchet hydraulic actuator
(2) it is connect with the screw hole of fixing device (8) after corresponding aperture, while bidirectional ratchet hydraulic actuator (2) is fixed on fixed dress
Set (8) above, column (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106246854A CN106246854A (en) | 2016-12-21 |
| CN106246854B true CN106246854B (en) | 2018-08-17 |
Family
ID=57594740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610720644.7A Expired - Fee Related CN106246854B (en) | 2016-08-24 | 2016-08-24 | Bidirectional ratchet hydraulic actuator and testing device of safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106246854B (en) |
Families Citing this family (6)
| 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 |
| CN109938939B (en) * | 2019-04-29 | 2024-08-06 | 江苏苏云医疗器材有限公司 | Flat push type lever driving device suitable for wheelchair and 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 |
| CN112605933B (en) * | 2020-11-24 | 2022-03-29 | 中国石油集团渤海钻探工程有限公司 | Hydraulic wrench |
| CN118329434B (en) * | 2024-06-12 | 2024-08-20 | 江苏蚨郡智能科技有限公司 | Portable safety valve on-line calibrator |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB684403A (en) * | 1949-07-21 | 1952-12-17 | Norman James Muschamp | Improvements in or relating to releasable supports for roofs in underground mines |
| CN2054165U (en) * | 1989-06-28 | 1990-03-07 | 北京市燕山石油化工公司化工一厂 | On-line detector for safety valve |
| CN2153538Y (en) * | 1993-02-15 | 1994-01-19 | 庄清宝 | Hoisting device with multiple brakes |
| CN2249334Y (en) * | 1996-01-23 | 1997-03-12 | 廖科君 | Driving device for ratchet cover plate of hydraulic-pressure machine |
| CN1546885A (en) * | 2003-12-10 | 2004-11-17 | 黄胜发 | Shaft steering control device |
| 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 |
| CN201338186Y (en) * | 2009-02-12 | 2009-11-04 | 朱云亭 | Combined hydraulic device for mounting and dismounting fasteners |
| CN201417215Y (en) * | 2009-06-08 | 2010-03-03 | 北京亚力特科技开发有限公司 | On-line check meter of servo protection valve |
| CN202158949U (en) * | 2011-07-15 | 2012-03-07 | 沙驼特检科技（北京）有限公司 | Safety valve on-line verification explosion-proof device |
| CN203116953U (en) * | 2013-02-07 | 2013-08-07 | 周庆忠 | On-line safety valve detector |
| CN203785867U (en) * | 2013-11-29 | 2014-08-20 | 成都施泰欧科技有限公司 | Safety valve online verification and adjustment device |
| CN104005780B (en) * | 2014-06-16 | 2016-03-30 | 重庆大江工业有限责任公司 | For dismantling/assembling the device of hydraulic support column fairlead under mine |
| CN104535310A (en) * | 2014-12-17 | 2015-04-22 | 浙江工业大学 | On-line detector for safety valve driven by pneumatic motor |
| CN104763788A (en) * | 2015-03-31 | 2015-07-08 | 宁波宫铁精机有限公司 | Bidirectional brake ratchet mechanism |
| CN105067233A (en) * | 2015-07-16 | 2015-11-18 | 李治涛 | Online testing device for safety valve and online testing method thereof |
-
2016
- 2016-08-24 CN CN201610720644.7A patent/CN106246854B/en not_active Expired - Fee Related
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|---|---|
| CN106246854A (en) | 2016-12-21 |
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