CN109209355A - A kind of unidirectional continuous rotation motor driven shearing valve type mud pulse generator - Google Patents
A kind of unidirectional continuous rotation motor driven shearing valve type mud pulse generator Download PDFInfo
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- CN109209355A CN109209355A CN201811303237.1A CN201811303237A CN109209355A CN 109209355 A CN109209355 A CN 109209355A CN 201811303237 A CN201811303237 A CN 201811303237A CN 109209355 A CN109209355 A CN 109209355A
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- 238000010008 shearing Methods 0.000 title claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 18
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 210000004907 gland Anatomy 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 4
- 241000239290 Araneae Species 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 21
- 239000012530 fluid Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 229920002472 Starch Polymers 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
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- Environmental & Geological Engineering (AREA)
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- Geophysics (AREA)
- Acoustics & Sound (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a kind of unidirectional continuous rotation motor driven shearing valve type mud pulse generators, including drive part, motor movement conversion equipment and rotary valve part；Wherein drive part includes motor and transmission shaft；Motor movement conversion equipment includes swinging disc, gear shaft pendulum and gear set；The disk body lower surface of the swinging disc was provided with the radial groove in axle center；The gear set includes three gears, and three gears are adjacent side by side is engagingly separately fixed at transmission shaft and two gear shafts are laid out, the upper end of the gear shaft pendulum is provided with an eccentric lobe, and the eccentric lobe and the radial groove of swinging disc disk body lower surface are slidably matched；Rotary valve part includes rotary valve stator, rotary valve rotor and drive shaft.The present invention put by gear shaft drive swinging disc control rotary valve rotor valve port standard-sized sheet and it is fully closed between swing, and unidirectional continuous rotation may be implemented in motor, can reduce the control difficulty of motor, while extending the service life of motor.
Description
Technical field
The invention belongs to petroleum drilling technology field more particularly to a kind of unidirectional continuous rotation motor driven shearing valve type mud
Starch impulse generator.
Background technique
With the development of automated drilling technology, people need the acquisition down-hole information as much as possible being getting faster, this
To down-hole information transmission technology, more stringent requirements are proposed.Down-hole information transmission technology can be divided into wired by the difference of transmission medium
Cable method, sonic method, drilling fluid pulse method and Electromagnetic Wave Method etc., and drilling fluid pulse method is applied the most in drilling measuring technology
Extensively, wherein continuous wave transmission mode belongs to frequency band transmission, and rate is relatively high, and anti-interference ability is stronger, therefore has wide
Application prospect.
The core component for generating continuous wave is continuous wave signnal generator, is broadly divided into shearing valve type and rotation by working principle
Rotary valve.The rotary valve rotor reciprocating rotary of shearing valve type continuous wave signnal generator is swung, and the signal of generation can have higher
Transmission rate, and have preferable anti-clogging ability, can effectively reduce cost of equipment maintenance, therefore, shearing valve type is continuous
Wave generator has better application prospect.When the work of shearing valve type continuous wave signnal generator, motor passes through driving
Axis drives rotary valve rotor, make its valve port standard-sized sheet and it is fully closed between swing, so that the circulation area of drilling fluid be periodically changed,
And then generate the drilling hydraulic Reeb with different characteristic.Currently, both at home and abroad about shearing valve-type continuous wave signnal generator
In terms of research is concentrated mainly on shear valve port shape and motor control, and the connection type of motor and rotary valve rotor is adopted
It is directly connected to mode with traditional, this makes shearing valve type continuous wave signnal generator at work, and rotary valve rotor needs frequent
High speed rotates and reverse, and then realizes quick swing of the rotary valve rotor relative to stator, so that driving motor frequently adds from static
Speed and it is decelerated to static, this mode will lead to the control of the position and speed under motor high speed rotation difficulty and become larger, and then be not easy
The continuous wave signal of high frequency is generated, while can also increase considerably down-hole drive power consumption and reduce the service life of driving motor, it is unfavorable
In the prolonged underground work of continuous wave signnal generator.
Summary of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of unidirectional continuous rotation motor driven to cut
Valve type mud pulse generator is cut, by increasing gear shaft pendulum and swinging disc between motor and rotary valve, makes gear shaft pendulum and pendulum
Moving plate form crank and rocker mechanism, thus by gear shaft pendulum drive swinging disc control rotary valve rotor valve port standard-sized sheet and it is fully closed it
Between swing, and unidirectional continuous rotation may be implemented in motor.This mode can reduce the control difficulty of motor, while extend motor
Service life has that structure is simple, is easy to control suitable for the downhole data wireless transmitting system of measurement while drilling and well logging
System uses the feature that the time is long, generation signal quality is high.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of unidirectional continuous rotation motor driven shearing valve type mud pulse generator, including drive part, motor movement
Conversion equipment and rotary valve part；
Wherein drive part includes motor and transmission shaft, and the lower shaft end of the transmission shaft passes through the output of shaft coupling and motor
Shaft end is connected；
Motor movement conversion equipment includes swinging disc, gear shaft pendulum and gear set and middle connecting cylinder；The middle connecting cylinder
Cover in the periphery of swinging disc, gear shaft pendulum and gear set；
The disk body lower surface of the swinging disc was provided with the radial groove in axle center, and the disk body upper surface of the swinging disc is set
It was equipped with the vertical connection shaft cylinder in axle center；
The upper shaft end of the transmission shaft is plugged at the disk body central shaft hole of swinging disc by bearing；
There are two the gear shaft pendulum, is symmetrically disposed in the two sides of transmission shaft, the transmission shaft and two gear shaft pendulum
Rotatably fixed by the relatively middle connecting cylinder of bearing spider；
The gear set includes three gears, and three gears are adjacent side by side is engagingly separately fixed at transmission shaft and two
Gear shaft is laid out, and the upper end of the gear shaft pendulum is provided with a platform, and the upper surface of the platform is provided with one partially by proximal edge
Cardiac prominence rises, and the eccentric lobe and the radial groove of swinging disc disk body lower surface are slidably matched；
Rotary valve part includes rotary valve stator, rotary valve rotor and drive shaft；The lower shaft end of the drive shaft is plugged in swinging disc
In the vertical connection shaft cylinder of disk body upper surface, the upper shaft end of the drive shaft is connected with rotary valve rotor plug, the rotary valve stator
It cooperates with rotary valve rotor.
It is further preferred that the rotary valve part further includes the flow guide sleeve close to the setting of drive shaft upper end, the flow guide sleeve
Interior to be equipped with rotatory sealing set around drive shaft, the rotatory sealing set uses rubber anti-erosion material.
It is further preferred that being provided with a hole platform in the middle connecting cylinder, transmission shaft and two teeth are corresponded in the hole platform
Wheel shaft pendulum is driveed side by side there are three hole, and bearing group, the transmission shaft and two corresponding difference of gear shafts pendulum are placed in three holes
Bearing group and then relatively middle connecting cylinder in three holes are rotatably fixed.
It is further preferred that the rotary valve part further includes covering on rotary valve stator and rotary valve rotor outer periphery and drive shaft
The upper end top of the upper hung drum of portion periphery, the upper hung drum is furnished with stator gland, and the outside vertical of the stator gland is set
It is equipped with overhanging fishing head.
It is further preferred that be threadedly coupled between the stator gland and hung drum, the fishing head and stator gland
It is connected through a screw thread.
It is further preferred that the rotary valve part further includes the magnetic coupling close to the setting of drive shaft lower end.
It is further preferred that the lower end of the upper hung drum is plugged with connector, the connector is placed on drive shaft lower part
On periphery and magnetic coupling periphery.
It is further preferred that the drive part further includes rotary transformer, the rotary transformer is connected to the motor.
It is further preferred that the periphery of the rotary transformer and motor is covered with lower protection cylinder, the bottom of the lower protection cylinder
Portion is located at rotary transformer end and is provided with tail sealing structure.
It is further preferred that the lower end of the middle connecting cylinder and it is lower protection cylinder upper end grafting, the middle connecting cylinder it is upper
The lower end grafting at end and connector.
Unidirectional continuous rotation motor driven shearing valve type mud pulse generator provided by the invention, using triangular form valve port
When, the mud pulse signal of generation is bigger relative to other mud pulse signal amplitudes and lasting in drilling fluid high pressure conditions
Time is longer, signal resolution ratio with higher.
Unidirectional continuous rotation motor driven shearing valve type mud pulse generator provided by the invention, when work, motor exists
Continuous rotation and gear set engagement rotation, gear set drive gear are driven by shaft coupling and transmission shaft under the driving of driving signal
Axis rotation is dynamic, and gear shaft lay out eccentric lobe and swinging disc disk body lower surface on the platform of end radial groove cooperation slide into
And swinging disc is pushed to rotate, swinging disc drives rotary valve rotor with respect to rotary valve stator rotation, when swinging disc reaches by drive shaft at this time
Rotary valve reaches full close position after to maximum rotation angle, and subsequent swinging disc reversely rotates under the promotion of eccentric lobe, band turn
Stopping when valve is rotated to reversed full close position, to generate the mud pulse signal with high-resolution.
Unidirectional continuous rotation motor driven shearing valve type mud pulse generator provided by the invention, drive part are mainly
Rotation under the action of driving signal through motor is to the powered rotation for rotary valve part；Rotary valve part is mainly logical
The transformation of drilling fluid circulation area is realized in the rotation for crossing rotary valve rotor, to generate drilling hydraulic Reeb；Motor movement converting means
Setting mainly becomes unidirectional continuous rotation for the reciprocating rotation of motor；Specifically, by increasing tooth between motor and rotary valve
Wheel shaft pendulum and swinging disc, make gear shaft pendulum form crank and rocker mechanism with swinging disc, drive swinging disc to put by gear shaft
Control rotary valve rotor valve port standard-sized sheet and it is fully closed between swing, and unidirectional continuous rotation may be implemented in motor；It can reduce motor
Control difficulty, while extending the service life of motor, be wirelessly transferred suitable for measurement while drilling and the downhole data of well logging
System has the characteristics that structure is simple, easily controllable, high using time length, generation signal quality.
Unidirectional continuous rotation motor driven shearing valve type mud pulse generator provided by the invention, simple with structure,
It is easily controllable, use that the time is long, generates the features such as signal quality is high.Specifically:
1) by the combination of gear shaft pendulum and swinging disc, motor is made to become unidirectional continuous rotation from original reciprocating rotation
Turn, reduces the complexity of motor movement, and then reduce the control difficulty of motor, while being also beneficial to the production of high-frequency signal
It is raw；
2) swinging disc and gear shaft, which are put, constitutes crank link mechanism by eccentric lobe, so that swinging disc is in crank connecting link machine
The dead-centre position stay longer of structure, the position correspond to rotary valve rotor full-shut position, this makes the drilling fluid pulse generated tool
There are biggish amplitude and high pressure conditions sustainable long period, to improve the quality of drilling fluid pulse signal；
3) pressure equaliser is replaced using rotatory sealing set, simplifies the structure of mud pulse generator, reduces mud
Starch the cost of impulse generator.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the entirety sectional view of impulse generator of the present invention；
Fig. 2 is the cross-sectional view of drive part in impulse generator of the present invention；
Fig. 3 is the cross-sectional view of motor movement conversion equipment in impulse generator of the present invention；
Fig. 4 is the structural schematic diagram of motor movement conversion equipment in impulse generator of the present invention；
Fig. 5 is the schematic illustration of motor movement conversion equipment in impulse generator of the present invention；
Fig. 6 is the cross-sectional view of impulse generator transfer valve portion of the present invention；
Fig. 7 is the continuous wave signal figure that impulse generator of the present invention generates.
Wherein: 1, fishing head；2, stator gland；3, upper hung drum；4, rotary valve stator；5, rotary valve rotor；6, flow guide sleeve；7,
Rotatory sealing set；8, connector；9, drive shaft；10, magnetic coupling；11, swinging disc；11a, radial groove；11b, vertically connect
Spindle cylinder；12, middle connecting cylinder；13, gear shaft is put；13a, platform；13b, eccentric lobe；14, transmission shaft；15, shaft coupling；16,
Motor；17, rotary transformer；18, lower protection cylinder；19, tail sealing device；20. gear set.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
It as background technique is introduced, exists in the prior art: using the connection side of traditional motor and rotary valve rotor
Formula, this makes shearing valve type continuous wave signnal generator at work, and rotary valve rotor needs frequently rotate and reverse at a high speed, in turn
Realize quick swing of the rotary valve rotor relative to stator so that driving motor frequently from static acceleration and be decelerated to it is static, it is this
Mode will lead to the control of the position and speed under motor high speed rotation difficulty and become larger, and then be not likely to produce the continuous wave letter of high frequency
Number, while can also increase considerably down-hole drive power consumption and reduce the service life of driving motor, it is unfavorable for continuous wave signnal generator
The deficiencies of prolonged underground work, in order to solve technical problem as above, the present invention proposes a kind of unidirectional continuous rotation motor
Drive shearing valve type mud pulse generator.
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in figures 1 to 6, a kind of unidirectional continuous rotation motor driven shearing valve type mud pulse generator, including driving portion
Point, motor movement conversion equipment and rotary valve part；
Wherein drive part includes motor 16 and transmission shaft 14, and the lower shaft end of the transmission shaft 14 passes through shaft coupling 15 and electricity
The output shaft end of machine 16 is connected；
Motor movement conversion equipment includes swinging disc 11, gear shaft pendulum 13 and gear set 20 and middle connecting cylinder 12；It is described
Middle connecting cylinder 12 covers in the periphery of swinging disc 11, gear shaft pendulum 13 and gear set 20；
The disk body lower surface of the swinging disc 11 was provided with the radial groove 11a in axle center, the disk body of the swinging disc 11
Upper surface was provided with the vertical connection shaft cylinder 11b in axle center；
The upper shaft end of the transmission shaft 14 is plugged at the disk body central shaft hole of swinging disc 11 by bearing；
There are two the gear shaft pendulum 13, is symmetrically disposed in the two sides of transmission shaft 14, the transmission shaft 14 and two teeth
Wheel shaft pendulum 13 is rotatably fixed by the relatively middle connecting cylinder 12 of bearing spider；Specifically, it is provided in the middle connecting cylinder 12
One hole platform, corresponds to transmission shaft 14 in the hole platform and two gear shafts pendulum 13 are driveed side by side there are three hole, is placed in three holes
Bearing group, the transmission shaft 14 and the corresponding bearing groups being each passed through in three holes of two gear shafts pendulum 13 so relatively in connect
Connect cylinder 12 is rotatably fixed；The gear set 20 includes three gears, and three gears are adjacent side by side is engagingly separately fixed at
On transmission shaft 14 and two gear shaft pendulum 13, the upper end of the gear shaft pendulum 13 is provided with a platform 13a, the platform 13a's
Upper surface is sliding by the radial direction that proximal edge is provided with eccentric lobe a 13b, the eccentric lobe 13b and 11 disk body lower surface of swinging disc
Slot 11a is slidably matched；Here, the gap very little between eccentric lobe 13b and radial groove 11a, can effectively reduce eccentric lobe
Collision between 13b and radial groove 11a wall and the vibration generated；Here, drive part and motor movement conversion equipment pass through biography
Moving axis 14 connects, and is interference fit between transmission shaft 14 and the intermediate gear of gear set 20, and transmission shaft 14 can be by thereon
Key transmitting torque is to drive the intermediate gear of gear set 20 to rotate；In addition, when impulse generator work, 14 band of transmission shaft
Dynamic intermediate gear rotation, intermediate gear pass through the engagement between gear and drive the rotation of two side gears, and eccentric lobe 13b is due to tooth at this time
The rotation of wheel works as bias to slide and push swinging disc 11 to rotate in the radial groove 11a of 11 disk body lower surface of swinging disc
Raised 13b reaches maximum rotation angle when pushing the rotation of swinging disc 11 to 22.5 °, and rotary valve is full-shut position at this time, then eccentric
Raised 13b pushes swinging disc 11 to reversely rotate 45 °, so that rotary valve is reached another full-shut position, to realize the swing of rotary valve rotor；
Here, eccentric lobe 13b is arranged at the position that 11 relative horizontal position maximum rotation angle of swinging disc can be pushed to be 22.5 °；
Rotary valve part includes rotary valve stator 4, rotary valve rotor 5 and drive shaft 9；The lower shaft end of the drive shaft 9 is plugged in pendulum
In the vertical connection shaft cylinder 11b of 11 disk body upper surface of Moving plate, the upper shaft end of the drive shaft 9 is connected with 5 grafting of rotary valve rotor, institute
It states rotary valve stator 4 and rotary valve rotor 5 cooperates.
Preferably, the rotary valve part further includes the flow guide sleeve 6 close to the setting of 9 upper end of drive shaft, in the flow guide sleeve 6 around
Drive shaft 9 is equipped with rotatory sealing and covers 7, and the rotatory sealing set 7 uses rubber material, has preferable flexibility, can be with driving
Corresponding deformation occurs for the rotation of axis 9, and the part that rotatory sealing set 7 is contacted with drive shaft 9 is without opposite sliding, to drop
The degree of wear of low rotatory sealing set 7, while rotatory sealing set 7 uses erosion resistant materials, is suitable for down-hole drilling fluids punching
The environment of erosion, the above characteristic can largely extend the service life of rotatory sealing set 7, and then increase the work of impulse generator
Make the time.
Preferably, the rotary valve part further includes the magnetic coupling 10 close to the setting of 9 lower end of drive shaft.Here, passing through
Magnetic coupling 10 may make rotary valve stator 4 and rotary valve rotor 5 interact to reduce the load torque of impulse generator in turn, with
It causes in reducing motor output shaft end load torque, to reach energy-efficient purpose.
Preferably, the rotary valve part further includes covering in 9 top of rotary valve stator 4 and 5 periphery of rotary valve rotor and drive shaft
The upper hung drum 3 of periphery, is furnished with stator gland 2 at the top of the upper end of the upper hung drum 3, the stator gland 2 and hung drum 3 it
Between to be threadedly coupled, the outside vertical of the stator gland 2 is provided with overhanging fishing head 1, the fishing head 1 and stator gland 2
It is connected through a screw thread；The lower end of the upper hung drum 3 is plugged with connector 8, and the connector 8 is placed on 9 lower, outer perimeter of drive shaft
And on 10 periphery of magnetic coupling, and the upper end and grafting of the lower end of connector 8 and middle connecting cylinder 12.
Preferably, the drive part further includes rotary transformer 17, and the rotary transformer 17 is connected with motor 16,
It is that control motor 16 provides encoded signal in this rotary transformer 17, to control the accurate rotation of motor 16, the rotation transformation
The periphery of device 17 and motor 16 is covered with lower protection cylinder 18, and the bottom of the lower protection cylinder 18 is located at the setting of 17 end of rotary transformer
There is tail sealing structure 19.Here, lower protection cylinder 18 and tail sealing structure 19 are primarily to protect motor disposed within
16 and rotary transformer 17, play the role of the sealing that is isolated from the outside world.
Preferably, the lower end of the middle connecting cylinder 12 and it is lower protection cylinder 18 upper end grafting, the middle connecting cylinder 12 it is upper
The lower end grafting at end and connector 8.
Unidirectional continuous rotation motor driven shearing valve type mud pulse generator provided by the invention, using triangular form valve port
When, the mud pulse signal of generation is bigger relative to other mud pulse signal amplitudes and lasting in drilling fluid high pressure conditions
Time is longer, signal resolution ratio with higher, as shown in Figure 7.
Unidirectional continuous rotation motor driven shearing valve type mud pulse generator provided by the invention, when work, motor 16
Continuous rotation and gear set engagement rotation, gear set 20 are driven by shaft coupling 15 and transmission shaft 14 under the driving of driving signal
13 rotation of band movable gear shaft pendulum, and gear shaft puts eccentric lobe 13b and 11 disk body lower surface of swinging disc on 13 upper end platform 13a
Radial groove 11a cooperation slide so that push swinging disc 11 rotate, at this time swinging disc 11 by drive shaft 9 drive rotary valve turn
Son 5 is rotated relative to rotary valve stator 4, and rotary valve reaches full close position, subsequent swinging disc after swinging disc 11 reaches maximum rotation angle
11 reversely rotate under the promotion of eccentric lobe 13b, stopping when rotary valve being driven to rotate to reversed full close position, to generate tool
There is the mud pulse signal of high-resolution.
Unidirectional continuous rotation motor driven shearing valve type mud pulse generator provided by the invention, drive part are mainly
Rotation under the action of driving signal through motor is to the powered rotation for rotary valve part；Rotary valve part is mainly logical
The transformation of drilling fluid circulation area is realized in the rotation for crossing rotary valve rotor, to generate drilling hydraulic Reeb；Motor movement converting means
Setting mainly becomes unidirectional continuous rotation for the reciprocating rotation of motor；Specifically, by increasing tooth between motor and rotary valve
Wheel shaft pendulum and swinging disc, make gear shaft pendulum form crank and rocker mechanism with swinging disc, drive swinging disc to put by gear shaft
Control rotary valve rotor valve port standard-sized sheet and it is fully closed between swing, and unidirectional continuous rotation may be implemented in motor；It can reduce motor
Control difficulty, while extending the service life of motor, be wirelessly transferred suitable for measurement while drilling and the downhole data of well logging
System has the characteristics that structure is simple, easily controllable, high using time length, generation signal quality.
Unidirectional continuous rotation motor driven shearing valve type mud pulse generator provided by the invention, simple with structure,
It is easily controllable, use that the time is long, generates the features such as signal quality is high.Specifically:
1) by the combination of gear shaft pendulum and swinging disc, motor is made to become unidirectional continuous rotation from original reciprocating rotation
Turn, reduces the complexity of motor movement, and then reduce the control difficulty of motor, while being also beneficial to the production of high-frequency signal
It is raw；
2) swinging disc and gear shaft, which are put, constitutes crank link mechanism by eccentric lobe, so that swinging disc is in crank connecting link machine
The dead-centre position stay longer of structure, the position correspond to rotary valve rotor full-shut position, this makes the drilling fluid pulse generated tool
There are biggish amplitude and high pressure conditions sustainable long period, to improve the quality of drilling fluid pulse signal；
3) pressure equaliser is replaced using rotatory sealing set, simplifies the structure of mud pulse generator, reduces mud
Starch the cost of impulse generator.
In the description of the present invention, it is to be understood that, term " on ", " in ", "lower", "bottom", "top", "inner", "outside",
" just ", the orientation or positional relationship of the instructions such as negation is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching
It states the present invention and simplifies description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of unidirectional continuous rotation motor driven shearing valve type mud pulse generator, which is characterized in that including including driving
Partially, motor movement conversion equipment and rotary valve part；
Wherein drive part includes motor and transmission shaft, and the lower shaft end of the transmission shaft passes through the output shaft end of shaft coupling and motor
It is connected；
Motor movement conversion equipment includes swinging disc, gear shaft pendulum and gear set and middle connecting cylinder；The middle connecting cylinder covers in
The periphery of swinging disc, gear shaft pendulum and gear set；
The disk body lower surface of the swinging disc was provided with the radial groove in axle center, and the disk body upper surface of the swinging disc is provided with
Cross the vertical connection shaft cylinder in axle center；
The upper shaft end of the transmission shaft is plugged at the disk body central shaft hole of swinging disc by bearing；
There are two the gear shaft pendulum, is symmetrically disposed in the two sides of transmission shaft, and the transmission shaft and two gear shaft pendulum are logical
The relatively middle connecting cylinder of bearing spider is crossed rotatably to fix；
The gear set includes three gears, and three gears are adjacent side by side is engagingly separately fixed at transmission shaft and two gears
Axis is laid out, and the upper end of gear shaft pendulum is provided with a platform, and it is convex that the upper surface of the platform by proximal edge is provided with a bias
It rises, the eccentric lobe and the radial groove of swinging disc disk body lower surface are slidably matched；
Rotary valve part includes rotary valve stator, rotary valve rotor and drive shaft；The lower shaft end of the drive shaft is plugged in swinging disc disk body
In the vertical connection shaft cylinder of upper surface, the upper shaft end of the drive shaft is connected with rotary valve rotor plug, the rotary valve stator with turn
Valve rotor cooperates.
2. unidirectional continuous rotation motor driven shearing valve type mud pulse generator as described in claim 1, which is characterized in that
The rotary valve part further includes the flow guide sleeve close to the setting of drive shaft upper end, and it is close around drive shaft to be equipped with rotation in the flow guide sleeve
Big envelope, the rotatory sealing set use rubber anti-erosion material.
3. unidirectional continuous rotation motor driven shearing valve type mud pulse generator as described in claim 1, which is characterized in that
It is provided with a hole platform in the middle connecting cylinder, transmission shaft is corresponded in the hole platform and two gear shaft pendulum are driveed side by side there are three hole,
Be placed with bearing group in three holes, the transmission shaft and two corresponding bearing groups being each passed through in three holes of gear shafts pendulum into
And relatively middle connecting cylinder is rotatably fixed.
4. unidirectional continuous rotation motor driven shearing valve type mud pulse generator as described in claim 1, which is characterized in that
The rotary valve part further includes the upper hung drum for covering in rotary valve stator and rotary valve rotor outer periphery and drive shaft upper periphery, described
It is furnished with stator gland at the top of the upper end of upper hung drum, the outside vertical of the stator gland is provided with overhanging fishing head.
5. unidirectional continuous rotation motor driven shearing valve type mud pulse generator as claimed in claim 4, which is characterized in that
To be threadedly coupled between the stator gland and hung drum, the fishing head is connected through a screw thread with stator gland.
6. unidirectional continuous rotation motor driven shearing valve type mud pulse generator as claimed in claim 4, which is characterized in that
The rotary valve part further includes the magnetic coupling close to the setting of drive shaft lower end.
7. unidirectional continuous rotation motor driven shearing valve type mud pulse generator as claimed in claim 6, which is characterized in that
The lower end of the upper hung drum is plugged with connector, and the connector is placed on drive shaft lower, outer perimeter and magnetic coupling periphery
On.
8. unidirectional continuous rotation motor driven shearing valve type mud pulse generator as claimed in claim 7, which is characterized in that
The drive part further includes rotary transformer, and the rotary transformer is connected to the motor.
9. unidirectional continuous rotation motor driven shearing valve type mud pulse generator as claimed in claim 8, which is characterized in that
The periphery of the rotary transformer and motor is covered with lower protection cylinder, and the bottom of the lower protection cylinder is located at the setting of rotary transformer end
There is tail sealing structure.
10. unidirectional continuous rotation motor driven shearing valve type mud pulse generator as claimed in claim 9, feature exist
In the upper end grafting of the lower end of the middle connecting cylinder and lower protection cylinder, the upper end of the middle connecting cylinder and the lower end of connector are inserted
It connects.
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