CN110107818A - Pipeline hypervelocity cutoff device - Google Patents
Pipeline hypervelocity cutoff device Download PDFInfo
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- CN110107818A CN110107818A CN201910360536.7A CN201910360536A CN110107818A CN 110107818 A CN110107818 A CN 110107818A CN 201910360536 A CN201910360536 A CN 201910360536A CN 110107818 A CN110107818 A CN 110107818A
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- 238000001514 detection method Methods 0.000 claims abstract description 17
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
Abstract
The invention discloses a kind of pipeline hypervelocity cutoff devices, including tube body and rack, the side of rack is arranged in tube body, it is swung in rack and is provided with weight, swinging chute is formed in rack, weight is swung by swing rod to be arranged on swinging chute, swing rod position is corresponded in rack is provided with actuator, rack is provided with locking mechanism, detection mouth is provided on tube wall, erecting bed is provided in detection mouth, erecting bed is connected by detection mouth with tube body, rotation is provided with cam on erecting bed side wall, cam is extended with rotation axis into erecting bed, rotation axis and erecting bed are rotatablely connected, sensing plate is fixedly installed in rotation axis, it senses plate and is extended by detection mouth into tube body, erecting bed is additionally provided with contact switch, contact switch is arranged close to the side of cam lobe.The device can effectively be monitored pipeline medium, when velocity of medium is excessive, can quickly cut off pipeline, while structure is simple, be conducive to realize and use.
Description
Technical field
The present invention relates to valve transmission and control technology field, especially a kind of pipeline fluid directly participates in the hypervelocity of control
Turn off valve drive.
Background technique
In long range fluid delivery pipeline, should be equipped with safeguard protection hypervelocity shut-off valve, when pipe downstream occur booster or
Other accidents, when overspeed situation occurs in pipeline fluid, valve answers quick closedown, avoids the expansion of the state of affairs.Valve closing process point
Fastly, two stages slowly: first quick closing valve is truncated most of water flow, rear slow to close to eliminate and close valve water hammer.The valve divides on long transportation pipe line
Grade arrangement, is often mounted in remote valve well, keeps it turned under nominal situation, set without personnel and keep maintenance；Thing
Therefore when happening, monitoring device monitors medium hypervelocity variation, issues mechanical switch signal, and valve actuator drives valve
It closes.According to this operating mode, optimum uses purely mechanic non-maintaining driving device: valve is manually opened or interim driven opening
Qi Shi, deposit closes valve energy, and valve is maintained at standard-sized sheet position by locking device, protects chasing after for the position energy without other after unlatching
Add；Monitoring device issues mechanical switch signal when medium exceeds the speed limit, and is directly unlocked using the pressure energy of pipeline medium, weight
Potential energy drives valve to close.This avoid the distribution costs of out-of-the-way location and electrical service cost, avoid electric fault, mention
The high reliability as pipe safety equipment.
Fluid delivery pipeline is usually provided with monitoring device, plays the monitoring to pipeline velocity of medium, existing monitoring dress
It sets and generallys use Electronic transducer technology, and be connected to automatic control system, in this way higher cost, hold in pipeline
Easy to damage, service life is lower；And overspeed signal can only be made a response by electric controling mode, it is not suitable for purely mechanic
The monitoring sender of formula pipe safety protective device.Also have at present using mechanical monitoring device, this mechanical structure, leads to
Normal structure is complex, and uses mechanical structure, and the detection reaction time is slower, cannot effectively play the effect of monitoring management
Fruit.
Hypervelocity shut-off valve carrys out the on-off of liquid in control piper usually using the drive mechanism of Weight type, passes through when in use
Ejector apparatus ejection weight rises so that weight is swung, so that opening valve road realizes access, when needing to close valve road, so that
Weight falls the quick closure for driving the structure of channel interior to realize pipeline, and the locking after weight rises at present is usually to adopt
The mode for continuing ejection with ejector apparatus releases ejection and weight is fallen, this structure weight part is held when closing valve road
Continuous to contradict on ejector apparatus, the compression that ejector apparatus is continuously in working condition, waste of energy, while duration, which will affect, to be pushed away
The service life of ejection device influences the stability of structure；And this energy need to be continuously replenished to compensate the leakage of hydraulic system
Working method is also not suitable for working condition requirement of the hypervelocity shut-off valve without electric rabbit maintenance self-insurance position.Also it or using perpendicular to weight lifts
The mode of the locking pin of track plane, external force moves back lock, valve opening reversed external force investment locking after in place when lifting hammer valve opening；Close valve Shi Zaiyong
External force first exits lock, and weight falls pass valve.But this throwing lock, unlocking motion are both needed to the electric automatization work side of external force participation
Formula is also not suitable for hypervelocity shut-off valve without electrically operated working condition requirement.Also or weight center of gravity is made to rest on body by critical line
In structure, then by another ejector of horizontal direction, when closing valve road, during which crosses
Axis falls again, to pass through the gravity quick closing valve road of weight.But this mode closes valve, and to push away stroke length, operating force big,
Discomfort shares aqueduct low-pressure medium and is directly used as power source；And the verticality of valve installation, valve is failure to actuate for a long time to go out
Existing bite situation can cause large effect to valve closing motion, and reaction speed is slower, cannot cope with burst well
Situation influences the security performance and using effect of whole equipment.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of pipeline hypervelocity cutoff device, can be effectively to pipeline medium
Be monitored, when velocity of medium is excessive, valve can be driven quickly to cut off pipeline, while structure is simple, be conducive to realize and
It uses.
The present invention provides a kind of pipeline hypervelocity cutoff device, including the one of rack is arranged in tube body and rack, the tube body
Side swings in the rack and is provided with weight and forms control to medium on-off in tube body, is formed with swinging chute in the rack,
The weight is swung by swing rod to be arranged on swinging chute, and swing rod position is corresponded in the rack and is provided with makes for ejection swing rod
Weight erects accumulation of energy and the actuator of tube body is connected, and the rack is provided with for the locking limitation weight drop after weight rises
Locking mechanism, be provided with detection mouth on the tube wall, erecting bed be provided in the detection mouth, the erecting bed passes through
Detection mouth is connected with tube body, and rotation is provided with cam on the erecting bed side wall, and the cam is extended with rotation into erecting bed
Axis, the rotation axis are arranged radially along tube body and are rotatablely connected with erecting bed, be fixedly installed in the rotation axis for being situated between
Matter impacts the sensing plate that rotate with moving cam, and the sensing plate passes through detection mouth and extends into tube body and towards medium flow field in tube body
To setting, the erecting bed, which is additionally provided with, makes the contact switch of weight drop for unlocking locking mechanism, and the contact switch leans on
The side setting of nearly cam lobe.
The beneficial effect being arranged in this way is: being arranged to this form, weight rises or falls here, and control valve road is opened
Closing belongs to the prior art and common mechanical mechanism, does not repeat here, and the rise movement of weight, which is used as, preferably to be used
Oil cylinder is lifted or the mode of ejection carries out, and the rise of weight can be the fuel tank by inside setting by manual pump progress
Lifting is also possible to that branch or oil circuit is arranged, and indentation oil liquid is can be set in pipeline here so that actuator works
Such as flow control valve, realize the control to actuator output speed.It, can ejection sense when velocity of medium mutation increases in tube body
Drafting board is swung, to rotate with moving cam, to quickly feed back on the scale of cam, thus effectively to pipeline medium flow velocity
It is monitored, sensing plate here can adjust the sensitivity of stress by changing size or protruding into the length of tube body
Property, while structure has longer service life, is hardly damaged, overall structure also very simple, is conducive to production and processing.It is convex simultaneously
Wheel rotation rear projection position can contradict contact switch, so that locking mechanism tripping is controlled, so that weight is fallen, to close valve
Road, in this way control are simple, are swift in response.
It includes positioning pendulum button and location hook that the present invention, which is further arranged to the locking mechanism, and the positioning pendulum button passes through company
Spindle swings in setting rack and forms location hole in rack, and the location hole, which is higher than, swings groove location setting, the positioning pendulum
Button one end is free end, and the other end is positioning end and is provided with barb, on the location hook setting swing rod, the location hook with fall
Fastener closes the positioning to be formed after erecting to weight.
The beneficial effect being arranged in this way is: using the above scheme, make weight erect savings gravitional force by actuator,
Here the standing of weight is no more than critical line, can fall after rise in this state against direction is erected without external force, in standing
In the process, the location hook on swing rod can be inconsistent with barb, while positioning pendulum is buckled partially and is turned, so that location hook falls into barb
It realizes and fastens in hook groove, after completing to fasten, actuator completes workmanship, and at this moment weight can be tensed positioning pendulum by self gravitation effect
Button, and position pendulum button and be rotatably arranged in rack, so that weight be held, so that weight will not fall, complete to weight
Positioning.This structure is simple, can preferably position to weight, and lock operation is also very convenient, when needing to unlock,
Only it is required that swing component is i.e. releasably engageable along the rotation of tripping direction, it is conducive to operation and realizes, improve integrally-built using effect.
It is smooth curved surface that the present invention, which is further arranged to the barb lateral surface, and the location hook lateral surface is on the outside of barb
Face radian moves the fastening to form location hook and barb.
The beneficial effect being arranged in this way is using the above scheme, to be set as smooth curved surface, realization button that can be more smooth
Conjunction movement, improves integrally-built using effect.
It is fixed for making that the present invention is further arranged in the rack be additionally provided in positioning pendulum button free end corresponding position
Button is put towards the tripping cylinder of tripping direction rotation in position, and the tripping cylinder output end is arranged along short transverse and positioning swing rod is arranged in certainly
By end lower section.
The beneficial effect being arranged in this way is: using the above scheme, setting tripping cylinder is not needed by manually pulling positioning pendulum
Button realizes tripping, and cylinder output end setting of threading off is buckled below free end in positioning pendulum, can be light by the ejection of output end
Realize that tripping so that weight is fallen, and can position the length of pendulum button free end and hinged place and increase the arm of force by increasing,
So as to more easily thread off, biggish tripping force is not needed, so that the power requirement of tripping cylinder is reduced, so that whole
Structure has the shorter reaction time, such as tripping cylinder is arranged to hydraulic cylinder, passes through the change of the pressure of water flow in identification pipeline
Change, water flow is introduced into hydraulic cylinder, to realize that automatic identification is threaded off, effectively improves integrally-built using effect.Here de-
It is associated with contact switch to detain cylinder, contact switch is pressurized so that tripping cylinder working, this structure is simple, conducive to realizing.
The present invention is further arranged to be provided with the inlet and leakage fluid dram being conducted, the inlet on the tripping cylinder
Return of stroke valve is provided between contact switch, the return of stroke valve includes matrix, and first is formed in described matrix and is led
Circulation road is provided with commutation mouth in described matrix, and the commutation mouth has extended to form the second flow-guiding channel into matrix, described to change
The connection with the first flow-guiding channel is formed by the second flow-guiding channel to mouth, the commutation mouth is connected with inlet, the touching
Point switch is arranged in the first flow-guiding channel front end, and rear end is provided with drain connector, is formed on the first flow-guiding channel inner wall
Limited step, second flow-guiding channel are arranged between limited step and contact switch, and the limited step connects close to drain
The side of head is provided with steel ball, and contradicting between the steel ball and drain connector has reset spring, is formed to steel ball in limited step
On conflict, the contact switch and grinding ball transmission form the connection or interruption of the second flow-guiding channel and the first flow-guiding channel, institute
State be connected on liquid outlet outlet tube formed to tripping cylinder in liquid discharge.
The beneficial effect being arranged in this way is: using the above scheme, reversal valve being arranged to this form, by steel ball
Sliding in one flow-guiding channel, in steel ball non-contravention when on limited step, so that the first flow-guiding channel and the second flow-guiding channel
Conducting allows liquid to flow into the second flow-guiding channel by the first flow-guiding channel, realize that liquid enters tripping cylinder, to make
The cylinder output end that must thread off stretches out ejection positioning pendulum and buckles, to realize tripping, when conflict switch is not acted on by cam, steel ball is multiple
It resets and is contradicted on limited step under the action of the spring of position, to be closed again to by the first flow-guiding channel, to realize
Cutoff action, so that tripping cylinder pressure decline, so that output end decline no longer contradicts positioning pendulum button.This structure is simply conducive to reality
It is existing, can preferably velocity of medium variation be incuded and be utilized, there is preferable sensibility.
It includes touching button and button seat that the present invention, which is further arranged to the contact switch, and the button seat and the first flow-guiding channel are inserted
It connects and is connected with merging with the first flow-guiding channel, the touching button is slidably arranged on button seat and is extended with into the first flow-guiding channel and pushes away
Bar, push rod contradict the transmission that push button and steel ball are formed on steel ball by limited step.
The beneficial effect being arranged in this way is: using the above scheme, contact switch being arranged to this form, touching button can be by
Cam contradicts to ejection steel ball, so that the first flow-guiding channel is connected with the second flow-guiding channel, this structure is simple, is conducive to
Realize that there is preferable using effect.
The present invention is further arranged on the erecting bed be provided with positioning seat in the smooth side of cam and formed to turn cam
Dynamic guiding, forms jagged between the cam and positioning seat, be provided with positioning bead in the notch, on the positioning seat also
It is provided with regulating mechanism, the regulating mechanism includes adjusting screw rod, adjustment seat and adjustment spring, and the adjustment seat setting is positioning
On seat side wall, adjusting through slot is provided in the adjustment seat, the adjusting through slot is arranged across positioning seat, and the adjusting screw rod is set
It sets and is adjusting through slot close to one end of adjustment seat and matching section with through slot screw thread is adjusted, the positioning bead, which is arranged in, adjusts the another of through slot
One end, the adjustment spring setting is in adjusting through slot and contradicts between adjusting screw rod and positioning bead.
The beneficial effect being arranged in this way is: using the above scheme, positioning bead is set, the fluency of turn disc is improved,
It is convenient for observation calibration simultaneously, it, can be right by observing positioning bead position as scale can preferably be arranged on positioning seat
Velocity of medium is skimed, and integrally-built using effect is improved.By rotation adjusting screw rod precession or screw out to adjusting bullet
Spring carries out ejection or loosens adjustment spring, the conflict power to positioning bead is controlled by compression or diastole spring, thus to rotation
The compression degree of disk is adjusted, so that the sensibility that rotating disc impacts velocity of medium is adjusted, setting structure letter in this way
It is single, it is conducive to realize, and convenient for adjusting.
The present invention is further arranged to the cam and extends to outside erecting bed be formed with reset square shaft, on the reset square shaft
It is provided with the spanner for resetting to cam rotation.
The beneficial effect being arranged in this way is: using the above scheme, can quickly reset to cam, while structure letter
It is single, convenient for operation, improve integrally-built using effect.
The present invention is further arranged to be formed with swinging axle on the swing rod, and the weight swings setting by swinging axle and exists
In swinging chute, the corresponding groove location that swings is provided with positioning shaft sleeve in the rack, and the positioning shaft sleeve is set in swinging axle shape
The positioning in through slot is being swung at swinging axle, the bottom of the frame two sides are provided with mounting hole, peace is provided on the actuator
Axis is filled, through installation axle setting in mounting hole, the actuator output end is connect with swing link transmission to be formed pair the actuator
Weight lifts or the driving that falls, position of mounting hole is provided with installation axle sleeve in the rack, the installation axle sleeve is set in
Fixation of the installation axle in mounting hole is formed in installation axle.
The beneficial effect being arranged in this way is: using the above scheme, when installing weight, first by swinging axle merging pendulum on swing rod
In dynamic slot, there are gaps between swinging chute and swinging axle here, and swing rod is allowed smoothly to be fit into swinging chute,
Positioning shaft sleeve is inserted in by the swinging chute other side again, entangles swinging axle, fills the gap between swinging axle and swinging chute, then will determine
Position axle sleeve is mutually fixed with positioning seat, to complete to install, when installing actuator, installation axle on actuator is first placed in mounting hole
In, there are gaps between mounting hole here and installation axle, and allow actuator to be smoothly fit into mounting hole, then
Installation axle sleeve is inserted in by the mounting hole other side, entangles installation axle, fills the gap between installation axle and mounting hole, then will installation
Axle sleeve is mutually fixed with positioning seat, to complete to install.This structure is simply conducive to realize, while when dismantling debugging, also very
It is convenient, it does not need to disassemble entire side panel, will not influence the position of actuator or weight, it is no longer necessary to carry out repeatedly
Debugging, it is more convenient when being assembled again.
Detailed description of the invention
Fig. 1 is the attachment structure schematic diagram of the embodiment of the present invention；
Fig. 2 is the lateral plan of rack in the embodiment of the present invention；
Fig. 3 is the front section view of erecting bed in the embodiment of the present invention；
Fig. 4 is the lateral plan of erecting bed in the embodiment of the present invention；
Fig. 5 is the cross section view of reversal valve in the embodiment of the present invention；
Fig. 6 is the positive partial cross sectional views of rack in the embodiment of the present invention.
Specific embodiment
It can be seen that by Fig. 1 to Fig. 6 and disclose a kind of pipeline hypervelocity cutoff device, including tube body 1 and rack 2, the pipe
The side of rack 2 is arranged in body 1, and the control for being provided with the formation of weight 4 to medium on-off in tube body 1, institute are swung in the rack 2
It states and is formed with swinging chute 21 in rack 2, the weight 4 is swung by swing rod 41 to be arranged on swinging chute 21, right in the rack 2
41 position of swing rod is answered to be provided with the actuator 8 for making weight 4 erect accumulation of energy for ejection swing rod 41 and tube body being connected, the rack 2
It is provided with the locking mechanism for locking limitation weight 4 whereabouts after the rise of weight 4, is provided with detection on 1 side wall of tube body
Mouthful, erecting bed 3 is provided in the detection mouth, the erecting bed 3 is connected by detection mouth and tube body 1,3 side wall of erecting bed
Upper rotation is provided with cam 5, and the cam 5 is extended with rotation axis 52 into erecting bed 3, and the rotation axis 52 is radial along tube body 1
It is arranged and is simultaneously rotatablely connected with erecting bed 3, is fixedly installed in the rotation axis 52 for being rotated by media impingement with moving cam 5
Plate 51 is sensed, the sensing plate 51 passes through detection mouth and extends into tube body 1 and towards medium flow field in tube body 1 to setting, the peace
Dress platform 3 is additionally provided with the contact switch 9 for making weight 4 fall for unlocking locking mechanism, and the contact switch 9 is convex close to cam 5
The side setting risen.The beneficial effect being arranged in this way is: being arranged to this form, weight 4 rises or falls here, control valve
Road open and close belongs to the prior art and common mechanical mechanism, does not repeat here, and the rise of weight 4 movement can be with
It is risen using cylinder, oil cylinder, motor and other similar driving device by regulations and parameters or lifting ejector system, the liter of weight 4
Rising, which can be, is lifted by the fuel tank of inside setting by manual pump, is also possible to that branch or oil circuit, indentation oil is arranged
Liquid such as flow control valve can be set in pipeline here, realize to 8 output work of actuator so that actuator 8 works
The control of rate.When velocity of medium mutation increases in tube body 1, meeting ejection sensing plate 51 is swung, thus rotated with moving cam 5, from
And quickly feed back on the scale of cam 5, to effectively be monitored to pipeline medium flow velocity, sensing plate 51 here can be with
The sensibility of stress is adjusted by changing size or protruding into the length of tube body 1, while structure has longer use
Service life is hardly damaged, and overall structure also very simple is conducive to production and processing.Cam 5 rotates rear projection position and can contradict simultaneously
Contact switch 9, to control locking mechanism tripping, so that weight 4 is fallen, to close valve road, control in this way is simple, reacts fast
Speed.
Above-mentioned locking mechanism includes positioning pendulum button 6 and location hook 61, and the positioning pendulum button 6 swings setting machine by connecting shaft
On frame 2 and in the formation location hole of rack 2, the location hole is arranged higher than 21 position of swinging chute, and 6 one end of the positioning pendulum button are certainly
By holding, the other end is positioning end and is provided with barb, and the location hook 61 is arranged on swing rod 41, the location hook 61 and barb button
Close the positioning formed after erecting to weight 4.The beneficial effect being arranged in this way is: using the above scheme, making weight by actuator 8
Hammer 4 erects savings gravitional force, and the standing of weight 4 here is no more than critical line, in this state can be against without external force
It erects direction to fall after rise, during standing, the location hook 61 on swing rod 41 can be inconsistent with barb, while making positioning pendulum button
6 deflections, so that location hook 61, which is fallen into, realizes fastening in the hook groove of barb, after completing to fasten, actuator 8 completes workmanship, at this moment
Weight 4 can be tensed positioning pendulum button 6 by self gravitation effect, and positioned pendulum button 6 and be rotatably arranged in rack 2, to will weigh
Hammer 4 is held, so that weight 4 will not fall, completes the positioning to weight 4.This structure is simple, can preferably to weight 4 into
Row positioning, lock operation is also very convenient, when needing to unlock, it is only necessary to so that swing component can take off along the rotation of tripping direction
Button is conducive to operation and realizes, improves integrally-built using effect.
Above-mentioned barb lateral surface is smooth curved surface, and 61 lateral surface of location hook, which moves to be formed along barb lateral surface radian, to be determined
The fastening of position hook 61 and barb.The beneficial effect being arranged in this way is using the above scheme, to be set as smooth curved surface, can be more
Smooth realization snap action, improves integrally-built using effect.
6 free end corresponding positions of button are put in positioning in above-mentioned rack 2 to be additionally provided with for making positioning pendulum button 6 towards tripping direction
The tripping cylinder 62 of rotation, 62 output end of tripping cylinder are arranged along short transverse and are arranged in below positioning 41 free end of swing rod.
The beneficial effect being arranged in this way is: using the above scheme, setting tripping cylinder 62 does not need real by manually pulling positioning pendulum button 6
It now threads off, and 62 output end of cylinder setting of threading off is buckled below 6 free ends in positioning pendulum, it can be easily real by the ejection of output end
Now tripping can position the length of pendulum 6 free ends of button and hinged place and increase the arm of force so that weight 4 is fallen by increasing,
So as to more easily thread off, biggish tripping force is not needed, so that the power requirement of tripping cylinder 62 is reduced, so that whole
Body structure has the shorter reaction time, such as tripping cylinder 62 is arranged to hydraulic cylinder, passes through the pressure of water flow in identification pump valve
Variation, water flow is introduced into hydraulic cylinder, thus realize automatic identification thread off, effectively improve integrally-built using effect.Here
Tripping cylinder 62 it is associated with contact switch 9, contact switch 9 be pressurized so that tripping cylinder 62 work, this structure is simple, benefit
In realization.
The inlet and leakage fluid dram being conducted are provided on above-mentioned tripping cylinder 62, between the inlet and contact switch 9
It is provided with return of stroke valve 7, the return of stroke valve 7 includes matrix 71, it is formed with the first flow-guiding channel 72 in described matrix 71,
Commutation mouth is provided in described matrix 71, the commutation mouth has extended to form the second flow-guiding channel 73 into matrix 71, described to change
The connection with the first flow-guiding channel 72 is formed by the second flow-guiding channel 73 to mouth, the commutation mouth is connected with inlet, institute
It states contact switch 9 to be arranged in 72 front end of the first flow-guiding channel, rear end is provided with drain connector 77, in first flow-guiding channel 72
Limited step 74 is formed on wall, second flow-guiding channel 73 is arranged between limited step 74 and contact switch 9, the limit
Position step 74 is provided with steel ball 75 close to the side of drain connector 77, and contradicting between the steel ball 75 and drain connector 77 has reset
Spring 76, forms the conflict to steel ball 75 on limited step 74, and the contact switch 9 forms the second water conservancy diversion with the transmission of steel ball 75
The connection or interruption in channel 73 and the first flow-guiding channel 72 are connected with outlet tube on the liquid outlet and are formed to liquid in tripping cylinder 62
The discharge of body.The beneficial effect being arranged in this way is: using the above scheme, reversal valve being arranged to this form, passes through steel ball 75
Sliding in the first flow-guiding channel 72, in 75 non-contravention of steel ball when on limited step 74 so that the first flow-guiding channel 72 with
The conducting of second flow-guiding channel 73, that is, allow liquid to flow into the second flow-guiding channel 73 by the first flow-guiding channel 72, realizes liquid
Body enters tripping cylinder 62, so that tripping 62 output end of cylinder, which stretches out ejection positioning pendulum, buckles 6, to realize tripping, opens in conflict
When closing not by the effect of cam 5, steel ball 75 resets conflict on limited step 74 under the action of reset spring 76, thus right again
First flow-guiding channel 72 is closed, thus realize cutoff action, so that tripping 62 pressure of cylinder decline, so that output end declines
No longer contradict positioning pendulum button 6.This structure is simply conducive to realize, can preferably change to velocity of medium and carry out induction and benefit
With with preferable sensibility.
Above-mentioned contact switch 9 includes touching button 92 and button seat 91, and the button seat 91 and the first flow-guiding channel 72 are mating simultaneously
It is connected with the first flow-guiding channel 72, the touching button 92 is slidably arranged on button seat 91 and is extended with into the first flow-guiding channel 72 and pushes away
Bar 93, push rod 93 contradict the transmission that push button and steel ball 75 are formed on steel ball 75 by limited step 74.What is be arranged in this way is beneficial
Effect is: using the above scheme, contact switch 9 being arranged to this form, touching button 92 can be contradicted by cam 5 to ejection steel
Ball 75, so that the first flow-guiding channel 72 and the second flow-guiding channel 73 is connected, this structure is simple, is conducive to realize, have compared with
Good using effect.
The smooth side of cam 5 is provided with positioning seat 55 on above-mentioned erecting bed 3 and forms the guiding rotated to cam 5, it is described
It is formed jagged between cam 5 and positioning seat 55, positioning bead 54 is provided in the notch, is additionally provided on the positioning seat 55
Regulating mechanism, the regulating mechanism include adjusting screw rod 57, adjustment seat 56 and adjustment spring, and the setting of adjustment seat 56 is positioning
On 55 side walls of seat, adjusting through slot is provided in the adjustment seat 56, the adjusting through slot is arranged across positioning seat 55, the adjusting
Screw rod 57, which is arranged in, to be adjusted through slot close to one end of adjustment seat 56 and matches section with through slot screw thread is adjusted, and the setting of positioning bead 54 exists
Adjust the other end of through slot, adjustment spring setting in adjusting through slot and contradict adjusting screw rod 57 and positioning bead 54 it
Between.The beneficial effect being arranged in this way is: using the above scheme, positioning bead 54 is arranged, improves the fluency of cam rotation, while just
It, can be by observing 54 position of positioning bead, to Jie as that preferably scale can be arranged on positioning seat 55 in carrying out observation calibration
Mass flow speed is skimed, and integrally-built using effect is improved.By rotation 57 precession of adjusting screw rod or screw out to adjusting bullet
Spring carries out ejection or loosens adjustment spring, the conflict power to positioning bead 54 is controlled by compression or diastole spring, thus to convex
The compression degree of wheel is adjusted, to adjust the sensibility that cam impacts velocity of medium, setting structure is simple in this way,
Conducive to realization, and convenient for adjusting.
Above-mentioned cam 5, which extends to be formed with to outside erecting bed 3, resets square shaft 53, is provided on the resets square shaft 53 and is used for pair
The spanner that the rotation of cam 5 resets.The beneficial effect being arranged in this way is: using the above scheme, can quickly answer cam 5
Position, while structure is simple, convenient for operation, improves integrally-built using effect.
Swinging axle 42 is formed on above-mentioned swing rod 41, the weight 4 is swung by swinging axle 42 to be arranged in swinging chute 21,
21 position of swinging chute is corresponded in the rack 2 and is provided with positioning shaft sleeve 22, and the positioning shaft sleeve 22 is set in 42 shape of swinging axle
The positioning in through slot is being swung at swinging axle 42,2 two sides of the bottom of rack are provided with mounting hole, are arranged on the actuator 8
There is installation axle, the actuator 8 is arranged in mounting hole by installation axle, and 8 output end of actuator and the transmission of swing rod 41 connect
The driving to be formed and weight 4 is lifted or fallen is connect, is provided in the rack 2 in position of mounting hole and axle sleeve 23, the peace is installed
Dress axle sleeve 23 is arranged forms fixation of the installation axle in mounting hole on the mounting shaft.The beneficial effect being arranged in this way is: in use
Scheme is stated, when installing weight 4, first swinging axle 42 on swing rod 41 is placed in swinging chute 21, swinging chute 21 and swing here
There are gap between axis 42, swing rod 41 is allowed smoothly to be fit into swinging chute 21, then by positioning shaft sleeve 22 by putting
Dynamic 21 other side of slot is inserted in, and swinging axle 42 is entangled, and fills the gap between swinging axle 42 and swinging chute 21, then by positioning shaft sleeve 22
It is fixed with 55 phase of positioning seat, to complete to install, when installing actuator 8, installation axle on actuator 8 is first placed in mounting hole
In, there are gaps between mounting hole here and installation axle, and allow actuator 8 to be smoothly fit into mounting hole,
Installation axle sleeve 23 is inserted in by the mounting hole other side again, entangles installation axle, fills the gap between installation axle and mounting hole, then will
Installation axle sleeve 23 is fixed with 55 phase of positioning seat, to complete to install.This structure is simply conducive to realize, while debugging in disassembly
When, it is also very convenient, it does not need to disassemble entire side panel, will not influence the position of actuator 8 or weight 4, no longer
It needs to be debugged repeatedly, it is more convenient when being assembled again.
Brief introduction is now done according to workflow of the Fig. 1 to the device, when needing to open entire pipeline, hand can be passed through
The mode of dynamic valve opening closes the first shut-off valve 101, and actuator 8 is the oil circuit of oil cylinder partition connection, and oil cylinder function at this time is double
Acting cylinder, by shaking manual pump 12, hydraulic oil enters oil cylinder rodless by the first check valve 141 and second one-way valve 142
Chamber pushes piston, rises weight 4, so that the valve in control piper is opened, the hydraulic oil in cylinder rod chamber passes through the one or three
Pass ball valve 111 returns to fuel tank 15, and when valve fully opens, the first shut-off valve 101 of unlatching, cylinder rod chamber is connected to rodless cavity
To fuel tank 15, oil cylinder function is converted to single-acting Slow Close cylinder, and weight 4 has the tendency that falling at this time, but can be with by positioning pendulum button 6
Limitation weight 4 is fallen, and completes manual valve opening movement；Valve opening can also be carried out by extraneous oil sources, by opening the second shut-off valve
102, so that external oil sources oil inlet pipe is connected with oil cylinder rodless cavity, the first three-way ball valve 111 of switching to external oil sources state,
So that extraneous oil sources oil return pipe is connected to cylinder rod chamber, external oil sources is connected, so that valve opening is realized, when valve fully opens
When, the second shut-off valve 102 is closed, the first three-way ball valve 111 of switching to manual valve opening state opens the first shut-off valve 101, oil cylinder
Rod chamber and rodless cavity are connected to fuel tank 15, and oil cylinder function is converted to single-acting Slow Close cylinder, and weight 4 has what is fallen to become at this time
Gesture, but weight 4 can be limited by positioning pendulum button 6 and fallen, complete extraneous oil sources valve opening movement.When pipeline works normally, meeting
It carries out the storage of accumulator 13 and presses work, open third shut-off valve 103, pressure medium is by third shut-off valve 103, filtering in tube body 1
Device 16, third check valve 143 are stored in accumulator 13, thus compressed air storage pressure, when so that tube body pressure having fluctuation, storage pressure
Pressure in tank 13 always remains at a high position for tube body pressure；When flow velocity is more than preset threshold in tube body 1, sensing plate 51 is being situated between
The promotion lower swing of matter, to push reversal valve 7 to commutate with moving cam 5, pressure water enters de- by reversal valve 7 in accumulator 13
The rodless cavity for detaining cylinder 62 pushes piston, to push positioning pendulum button 6 to thread off with weight 4, so that weight is fallen, so that tube body
1 valve is closed, and the speed that valve is closed here can be controlled by first flow control valve 171, when valve is closed to one
When determining angle position, oil circuit is truncated in oil cylinder expert's process control bar, is closed valve and is entered Slow Close state, the hydraulic oil in oil cylinder continues through
172 oil return of second flow control valve, thus valve slowly closing, to eliminate the water hammer in tube body 1, the Slow Close time can pass through
Two flow control valves 172 are adjusted；After pipeline is closed, need to carry out reset operation to tripping cylinder 62, by opening the 5th section
Second three-way ball valve 112 is turned to tripping cylinder reset state by only valve 105, and the pressure water in accumulator 13 passes through the second threeway
Ball valve 112 enters tripping 62 rod chamber of cylinder, and rodless cavity is drained by the 5th shut-off valve 105, work of tripping 62 piston of cylinder in hydraulic pressure
It is resetted with lower retraction, after completing homing action, by the 5th shut-off valve 105, so that the second three-way ball valve 112 is switched to tripping
62 normal condition of cylinder can carry out if not having pressure in accumulator 13 and penstocks in such a way that pressure positions pendulum button 6
Mechanical return.When needing to close valve manually, the 4th shut-off valve 104 is opened manually, and the pressure water in tube body passes through the 4th shut-off valve
104 rodless cavities for entering tripping cylinder 62 push piston, to move back lock, so that weight 4 is fallen, realize and close valve.
The above embodiments are merely a preferred embodiment of the present invention, and cannot limit interest field of the invention with this, because
This, is still belonged to according to equivalent variations made by scope of the present invention patent, such as using similar technique, the equivalent product of similar structures
The range that the present invention is covered.
Claims (9)
- The cutoff device 1. a kind of pipeline exceeds the speed limit, including tube body and rack, the tube body are arranged in the side of rack, in the rack It swings and is provided with weight and forms control to medium on-off in tube body, be formed with swinging chute in the rack, the weight passes through Swing rod, which is swung, to be arranged on swinging chute, and swing rod position is corresponded in the rack and is provided with makes weight erect accumulation of energy for ejection swing rod And the actuator of tube body is connected, it is characterised in that: the rack is provided with for the locking limitation weight drop after weight rises Locking mechanism, be provided with detection mouth on the tube wall, erecting bed be provided in the detection mouth, the erecting bed passes through Detection mouth is connected with tube body, and rotation is provided with cam on the erecting bed side wall, and the cam is extended with rotation into erecting bed Axis, the rotation axis are arranged radially along tube body and are rotatablely connected with erecting bed, be fixedly installed in the rotation axis for being situated between Matter impacts the sensing plate that rotate with moving cam, and the sensing plate passes through detection mouth and extends into tube body and towards medium flow field in tube body To setting, the erecting bed, which is additionally provided with, makes the contact switch of weight drop for unlocking locking mechanism, and the contact switch leans on The side setting of nearly cam lobe.
- The cutoff device 2. pipeline according to claim 1 exceeds the speed limit, it is characterised in that: the locking mechanism includes positioning pendulum button And location hook, the positioning pendulum button are swung in setting rack by connecting shaft and form location hole in rack, the location hole is high In swinging groove location setting, described positioning pendulum button one end is free end, and the other end is positioning end and is provided with barb, the positioning Hook is arranged on swing rod, and the location hook and barb fasten the positioning to be formed after erecting to weight.
- The cutoff device 3. pipeline according to claim 2 exceeds the speed limit, it is characterised in that: the barb lateral surface is round and smooth song Face, the location hook lateral surface move the fastening to form location hook and barb along barb lateral surface radian.
- The cutoff device 4. pipeline according to claim 1 or 2 or 3 exceeds the speed limit, it is characterised in that: put in the rack in positioning Button free end corresponding position is additionally provided with the tripping cylinder for making positioning pendulum button towards the rotation of tripping direction, the tripping cylinder output end It is arranged along short transverse and is arranged in below positioning swing rod free end.
- The cutoff device 5. pipeline according to claim 4 exceeds the speed limit, it is characterised in that: be provided with and be conducted on the tripping cylinder Inlet and leakage fluid dram, return of stroke valve is provided between the inlet and contact switch, the return of stroke valve includes Matrix is formed with the first flow-guiding channel in described matrix, commutation mouth is provided in described matrix, the commutation mouth prolongs into matrix It stretches and is formed with the second flow-guiding channel, the commutation mouth forms the connection with the first flow-guiding channel by the second flow-guiding channel, described Commutation mouth is connected with inlet, and the contact switch is arranged in the first flow-guiding channel front end, and rear end is provided with drain connector, institute State and be formed with limited step on the first flow-guiding channel inner wall, second flow-guiding channel setting limited step and contact switch it Between, the limited step is provided with steel ball close to the side of drain connector, and contradicting between the steel ball and drain connector has reset Spring, forms conflict to steel ball on limited step, and the contact switch and grinding ball transmission form the second flow-guiding channel and the The connection or interruption of one flow-guiding channel are connected with outlet tube on the liquid outlet and form discharge to liquid in tripping cylinder.
- The cutoff device 6. pipeline according to claim 5 exceeds the speed limit, it is characterised in that: the contact switch includes touching button and button Seat, the button seat is mating with the first flow-guiding channel and is connected with the first flow-guiding channel, and the touching button is slidably arranged in button seat It above and into the first flow-guiding channel is extended with push rod, push rod passes through limited step and contradicts the biography for forming push button and steel ball on steel ball It is dynamic.
- The cutoff device 7. pipeline according to claim 1 exceeds the speed limit, it is characterised in that: in cam smooth one on the erecting bed Side be provided with positioning seat formed to cam rotation guiding, formed between the cam and positioning seat it is jagged, in the notch It is provided with positioning bead, regulating mechanism is additionally provided on the positioning seat, the regulating mechanism includes adjusting screw rod, adjustment seat and tune Spring is saved, the adjustment seat is arranged on positioning seat side wall, adjusting through slot is provided in the adjustment seat, the adjusting through slot is worn Positioning seat setting is crossed, the adjusting screw rod, which is arranged in, to be adjusted through slot close to one end of adjustment seat and matches section with through slot screw thread is adjusted, The other end for adjusting through slot is arranged in the positioning bead, and the adjustment spring setting is in adjusting through slot and contradicts in adjusting screw rod Between positioning bead.
- The cutoff device 8. pipeline according to claim 7 exceeds the speed limit, it is characterised in that: the cam extends shape to outside erecting bed At there is reset square shaft, described reset is provided with for rotating the spanner resetted to cam on square shaft.
- The cutoff device 9. pipeline according to claim 1 exceeds the speed limit, it is characterised in that: it is formed with swinging axle on the swing rod, The weight is swung by swinging axle to be arranged in swinging chute, and the corresponding groove location that swings is provided with positioning shaft sleeve in the rack, The positioning shaft sleeve is set in the positioning that swinging axle is formed outside swinging axle in swing through slot, and the bottom of the frame two sides are provided with Mounting hole is provided with installation axle on the actuator, and the actuator is arranged in mounting hole by installation axle, the actuator Output end connect to be formed with swing link transmission and lift to weight or the driving that falls, and position of mounting hole is provided with peace in the rack Axle sleeve is filled, the installation axle sleeve, which is set in installation axle, forms fixation of the installation axle in mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910360536.7A CN110107818A (en) | 2019-04-30 | 2019-04-30 | Pipeline hypervelocity cutoff device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910360536.7A CN110107818A (en) | 2019-04-30 | 2019-04-30 | Pipeline hypervelocity cutoff device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110107818A true CN110107818A (en) | 2019-08-09 |
Family
ID=67487833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910360536.7A Pending CN110107818A (en) | 2019-04-30 | 2019-04-30 | Pipeline hypervelocity cutoff device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110107818A (en) |
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