CN207689928U - A kind of boring pressure regulating device and the downhole ultrasonic imaging device with the boring pressure regulating device - Google Patents
A kind of boring pressure regulating device and the downhole ultrasonic imaging device with the boring pressure regulating device Download PDFInfo
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- CN207689928U CN207689928U CN201721684983.0U CN201721684983U CN207689928U CN 207689928 U CN207689928 U CN 207689928U CN 201721684983 U CN201721684983 U CN 201721684983U CN 207689928 U CN207689928 U CN 207689928U
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Abstract
The utility model provides a kind of boring pressure regulating device and the downhole ultrasonic imaging device with the pressure-regulating device, including tube body, central shaft, pressure balancing piston, lower contact, driving member, fuel feeding valve and gate gurgle valve.Tube body has the cavity surrounded by side wall.Central shaft is set in tube body and coaxial with tube body.Cavity is separated into installation cavity and pressure regulating cavity independent of each other by pressure balancing piston.Lower contact is installed on the end of tube body, lower contact and tube body and central shaft axial direction dynamic sealing, and lower contact surrounds an independent pressure chamber with central shaft.The both ends of driving member respectively with pressure balancing piston and lower contact against.The oil outlet of fuel feeding valve is connected to pressure chamber.The oil inlet of gate gurgle valve is connected to pressure chamber.Pressure in installation cavity and pipe external pressure can be made almost the same by oiling and oil extraction.
Description
Technical field
The utility model is related to geostress survey technical field, in particular to a kind of boring pressure regulating device and
Downhole ultrasonic imaging device with the boring pressure regulating device.
Background technology
Currently, crustal stress is the primary stress being present in earth's crust rock mass and the important physical attribute ginseng of solid earth
One of number.Crustal stress is to cause the root strength of rock mass deformation, unstability and destruction, and influence oil, shale gas, hot dry rock etc.
The important parameter of deep energy extraction.The measurement for thus carrying out crustal stress is operated in seismic mechanism research, energy extraction, mine tunnel
Road design, large-scale dam dam foundation construction etc. have important science and Practical significance.
The most important method of geostress survey is hydraulic fracturing.Hydraulic fracturing geostress survey is by the borehole
One section of rock open-hole is insulated, highly pressurised liquid is injected to packing section, makes hole wall fracturing section rock mass that rupture occur to determine that crustal stress is big
A kind of small and direction method.Party's law theory is ripe, it is easy to operate, fathom it is big, at low cost, at present in worldwide
Inside it is widely used.
Complete hole wall rock mass will be generated after hydraulic fracturing two it is symmetrical, perpendicular to hole axle, parallel in 180 °
Induction crack, the azimuth that this pair induces crack then represents the direction of maximum horizontal principal stress.Obtain maximum horizontal master
The direction of stress is the important content for carrying out drilling hydraulic fracturing geostress survey.Existing acquisition maximum horizontal principal stress side
To method be mainly impression method, i.e., the trace height for inducing crack is stamped in the vulcanized rubber on its surface using stamp packing element
On, this method simple, intuitive, but also have disadvantages that mainly have：Time-consuming and laborious, inefficiency, each lower bore is only capable of obtaining
The directional information of 1-2 test point；The trace for being imprinted on stamp packing element surface is easy to be ground off by hole wall in drilling process；For
The larger drilling of stress value, it is also bigger due to inducing the stress that crack is opened again, it is difficult clearly to stamp and will induce
Crack trace.Above-mentioned several disadvantages influence experimental result in the case of the larger borehole conditions complexity of drilling depth tighter
Weight.
Utility model content
One of the purpose of this utility model is to provide a kind of boring pressure regulating device and is adjusted with the boring pressure
The downhole ultrasonic imaging device of device, to balance external and internal pressure.
At least one of in order to solve the above-mentioned technical problem, the utility model provides following technical scheme：
A kind of boring pressure regulating device, including：
Tube body, the tube body have the cavity surrounded by side wall；
Central shaft, the central shaft are set in the tube body and coaxial with the tube body；
The cavity is separated into installation cavity independent of each other and pressure tune by pressure balancing piston, the pressure balancing piston
Save chamber；
Lower contact, the lower contact are installed on the end of the tube body, the lower contact and the tube body and central shaft axis
To dynamic sealing, the lower contact surrounds an independent pressure chamber with the central shaft；
Driving member, the both ends of the driving member respectively with pressure balancing piston and lower contact against；
Fuel feeding valve, the oil outlet of the fuel feeding valve are connected to the pressure chamber, and the fuel feeding valve is configured to receive control
Signal simultaneously can be to pressure chamber injection pressure oil, so that the lower contact is far from the pressure balancing piston；
Gate gurgle valve, the oil inlet of the gate gurgle valve are connected to the pressure chamber, and the gate gurgle valve is configured to receive control
Signal and the pressure oil that can be discharged in the pressure chamber, so that the lower contact is close to the pressure balancing piston.
Further, in the alternative embodiment of the utility model, the boring pressure regulating device further includes that pressure passes
Sensor, the pressure sensor are configured to the pressure of the external pressure of detection pipe and installation cavity and export control signal.
Further, in the alternative embodiment of the utility model, the driving member is elastic component.
Further, in the alternative embodiment of the utility model, the driving member is spring.
The utility model additionally provides a kind of downhole ultrasonic imaging device with boring pressure regulating device comprising super
Acoustic imaging equipment and above-mentioned boring pressure regulating device.
The side wall, which is provided with, to block water and for the sound transmitting window that ultrasonic wave penetrates, the ultrasonic imaging apparatus includes ultrasound
Imaging unit and driving mechanism；The ultrasound imaging unit includes at least one ultrasonic probe, and the ultrasound imaging unit can live
It is installed on the installation cavity dynamicly, the detection direction of the ultrasonic probe is towards the sound transmitting window；The driving mechanism is installed on
The installation cavity, and the driving mechanism is sequentially connected with the ultrasonic probe to drive the ultrasonic probe along the axial direction of tube body
And/or circumferential movement.
Further, in the alternative embodiment of the utility model, the central shaft is located at the installation cavity and institute simultaneously
Pressure balance intracavitary is stated, the ultrasound imaging unit further includes mounting base, and the ultrasonic probe is installed on the mounting base, described
Mounting base is movably sheathed on the periphery of the central shaft, and the driving mechanism is sequentially connected with the mounting base；Preferably,
The central shaft has axially extending bore；Preferably, the central shaft is made of metal material.
Further, in the alternative embodiment of the utility model, the driving mechanism include active straight spur gear,
Driven straight spur gear and power plant；The active straight spur gear and the power output portion of the power plant pass
Dynamic connection, the driven straight spur gear are connect with the central axle threads to form lead screw pair, and the driven straight-tooth circle
Stud wheel is engaged with the active straight spur gear；The driven straight spur gear and the mounting base circumferential and/or
Axial restraint connects.
Further, in the alternative embodiment of the utility model, the driven straight spur gear and the mounting base
It is fixedly connected in circumferential and axial.
Further, in the alternative embodiment of the utility model, the power plant is motor；The installation cavity also wraps
Include an independent motor placing chamber, the motor is installed in the motor placing chamber, and the motor placing chamber in filling by
Insulate silicone oil；Preferably, the motor is DC brushless motor.
Further, in the alternative embodiment of the utility model, the installation cavity further includes a battery installation cavity, described
Battery is installed, the battery is connect with the ultrasonic probe and motor counter electrode in battery installation cavity.
The utility model has the beneficial effects that：The utility model by boring pressure regulating device that above-mentioned design obtains with
And the downhole ultrasonic imaging device with boring pressure regulating device, in use, when pipe external pressure is more than the pressure in installation cavity,
The pressure oil of gate gurgle valve discharge pressure intracavitary so that lower contact close to pressure balancing piston, driving member push pressure balancing piston to
Left movement, the pressure in installation cavity increase.When pipe external pressure is less than the pressure in installation cavity, fuel feeding valve is to pressure chamber injection pressure
Oil, lower contact are moved right far from pressure balancing piston, dummy piston, and the pressure in installation cavity reduces.Made in installation cavity with this
Pressure and pipe external pressure it is almost the same.
Description of the drawings
It, below will be to required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore not
The restriction to range is should be considered as, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 is showing for the downhole ultrasonic imaging device with boring pressure regulating device that the utility model embodiment provides
It is intended to；
Fig. 2 is the schematic diagram for the downhole ultrasonic imaging device that the utility model embodiment provides；
Fig. 3 is the partial enlarged view of Fig. 2；
The schematic diagram for the boring pressure regulating device that Fig. 4 the utility model embodiments provide.
Icon：S1- top connections；S2- battery installation cavitys；S4- slip rings；S41- anode sliding blocks；S42- cathode sliding blocks；S43-
Axial limiting portion；S5- holds line linkage unit；The first spools of S51-；S511- anode rings；S512- cathode rings；S513- convex annulars
Edge；The second spools of S52-；S6- ultrasonic probes；S7- tube bodies；S71- sound transmitting windows；S8- active straight spur gears；S9- is driven straight
Tooth roller gear；S10- power plants；S11- pressure balancing pistons；S12- fuel feeding valves；S13- gate gurgle valves；S14- pressure switches；
S15- central shafts；S16- lower contacts；S17- pressure chambers；S18- driving members.
Specific implementation mode
To keep the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with this practicality
The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows
So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on this practicality
Embodiment in novel, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.Therefore, the implementation to the utility model provided in the accompanying drawings below
The detailed description of mode is not intended to limit claimed the scope of the utility model, but is merely representative of the utility model
Selected embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative labor
The every other embodiment obtained under the premise of dynamic, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on the orientation or positional relationship shown in the drawings, be only for
Described convenient for description the utility model and simplifying, do not indicate or imply the indicated equipment or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be
It is connected directly, can also can be indirectly connected through an intermediary the mutual of connection inside two elements or two elements
Interactively.For the ordinary skill in the art, it can understand that above-mentioned term is new in this practicality as the case may be
Concrete meaning in type.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it
"lower" may include that the first and second features are in direct contact, and can also not be to be in direct contact but lead to including the first and second features
Cross the other characterisation contact between them.Moreover, fisrt feature second feature " on ", " top " and " above " include the
One feature is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.First is special
Sign second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or only
Indicate that fisrt feature level height is less than second feature.
Embodiment
As shown in Figure 1, a kind of downhole ultrasonic imaging device with boring pressure regulating device is present embodiments provided,
Including downhole ultrasonic imaging device and boring pressure regulating device.Downhole ultrasonic imaging device and boring pressure regulating device
See respectively shown in Fig. 2 and Fig. 3.Fig. 2 and Fig. 3 is left and right two parts of Fig. 1 respectively.In the present embodiment, downhole ultrasonic is imaged
Device and boring pressure regulating device share an a tube body S7 and central shaft S15.In other embodiments, downhole ultrasonic
Imaging device can also be combined with the boring pressure regulating device of other structures.Boring pressure regulating device combine can also and its
The downhole ultrasonic imaging device of his structure combines.
First downhole ultrasonic imaging device provided in this embodiment is described with reference to Fig. 2 and Fig. 3.
A kind of downhole ultrasonic imaging device, including tube body S7, ultrasound imaging unit and driving mechanism.
Wherein, the both ends of tube body S7 are respectively arranged with top connection S1 and lower contact S16.Tube body S7 has to be surrounded by side wall
We define its installation cavity (close to top connection S1) for cavity, the wherein left part of cavity, right part we define it as pressure
Dynamic balance chamber (close to pressure balance chamber).
Surround installation cavity side wall some be sound transmitting window S71, sound transmitting window S71 blocks water and is penetrated for ultrasonic wave.
Optional polytetrafluoroethylene (PTFE) is as the material for preparing sound transmitting window S71.In the present embodiment, sound transmitting window S71 is circumferentially disposed along tube body S7
Cirque structure.
Ultrasound imaging unit includes at least one ultrasonic probe S6, and ultrasound imaging unit is movably installed on installation cavity,
The detection direction of ultrasonic probe S6 is towards sound transmitting window S71.
Further, in the alternative embodiment of the utility model, ultrasonic probe S6 includes ultrasonic transmitter and reception
Energy converter receives energy converter and is configured to receive the ultrasonic signal for being sent out by ultrasonic transmitter and being reflected back by the borehole wall；It is excellent
Selection of land receives the energy converter that energy converter is piezo crystal.
Ultrasonic transmitter and reception energy converter can be arranged in a one-to-one correspondence, can also a ultrasonic transmitter correspondence
At least two receive energy converter.Such as by the setting of ultrasonic transmitter in centre, and multiple reception energy converters circumferentially between
Every setting, you can the information in the multiple orientation of the detection borehole wall.
Further, in the alternative embodiment of the utility model, the quantity of ultrasonic probe S6 is 2.Preferably, 2
The detection direction of ultrasonic probe S6 along tube body S7 radially outward and angle is 180 °.
Driving mechanism is installed on installation cavity, and driving mechanism is sequentially connected with ultrasonic probe S6 to drive the edges ultrasonic probe S6
The axial direction and/or circumferential movement of tube body S7.
In other words, driving mechanism may be configured to driving ultrasonic probe S6 only along the axial movement of tube body S7, also may be used
To be configured to driving ultrasonic probe S6 only along the circumferential movement of tube body S7, driving ultrasonic probe S6 is can be configured to along pipe
The axial and circumferential of body S7 can move.In the present embodiment, driving mechanism may be configured to the edges driving ultrasonic probe S6
The axial and circumferential of tube body S7 can move.More multi-faceted borehole wall information can be obtained in this way.
It is possible to further install gyro-magnetic compass in installation cavity to record the orientation of ultrasonic probe S6, in order to obtain
Know the orientation in the crack monitored.
Further, in the alternative embodiment of the utility model, downhole ultrasonic imaging device further includes central shaft
S15, ultrasound imaging unit further include mounting base, and ultrasonic probe S6 is installed on mounting base, and mounting base is movably sheathed on center
The periphery of axis S15, driving mechanism are sequentially connected with mounting base.Preferably, central shaft S15 has axially extending bore.Further, exist
In the present embodiment, central shaft S15 is made of metal material.Compared to flexible pipe, central shaft S15 belongs to rigid pipe, not only pressure-bearing
Ability is more preferable, and can be as the guide frame of mounting base.
Further, in the alternative embodiment of the utility model, driving mechanism include active straight spur gear S8, from
Dynamic straight spur gear S9 and power plant S10；The power output portion of active straight spur gear S8 and power plant S10
It is sequentially connected, driven straight spur gear S9 is threadedly coupled with central shaft S15 to form lead screw pair, and driven straight tooth column tooth
Wheel S9 is engaged with active straight spur gear S8；Driven straight spur gear S9 connects with mounting base in circumferential direction and/or axial restraint
It connects.The connection of driven straight spur gear S9 and mounting base can with about opposite with the desired motion mode of ultrasonic probe S6
It answers.In the present embodiment, driven straight spur gear S9 is fixedly connected with mounting base in circumferential and axial.
Further, in the alternative embodiment of the utility model, ultrasonic imaging apparatus further includes pressure switch S14,
Pressure switch S14 has pressure input unit and electric signal output portion, and pressure input site is in outside tube body S7, electric signal output position
It is connect in tube body S7 and with motor and ultrasonic probe counter electrode, pressure switch S14 is configured to receive when pressure input unit
To drilling in fluid pressure reach preset value when start motor and ultrasonic probe.
When using this pressure switch S14, if pressure when preset pressure value starts with pressure break is correspondingly arranged, pressure break
It is completed in the same time with imaging function, realizes that certain hole segment length induces the imaging in crack.
Further, the time of ultrasonic imaging be also can be preset, executed in a preset time that can be upon actuation,
Then automatic to terminate.
Further, in the alternative embodiment of the utility model, power plant S10 is motor；In installation cavity filling by
Insulate silicone oil.Preferably, in the present embodiment, motor is DC brushless motor.Motor is impregnated in insulation silicone oil.
Further, in embodiment, installation cavity further includes a battery installation cavity S2, and electricity is equipped in battery installation cavity S2
Pond, battery are connect with ultrasonic probe S6 and motor counter electrode.
Further, can also include holding line linkage unit S5 and slip ring in the alternative embodiment of the utility model
S4, slip ring S4 are sheathed on the periphery of central shaft S15 and are fixed in tube body S7, hold line linkage unit S5 on the whole and are in and is hollow thin
Long structure, the internal accommodating cavity with accommodating electric lead；Hold line linkage unit S5 radially and is in rigidity and grows in the axial direction
Degree is variable；Hold one end of line linkage unit S5 with slip ring S4 axial restraints and be circumferentially slidably connected, holds the another of line linkage unit S5
One end is fixedly connected with mounting base.
Further, slip ring S4 has the annular groove around central shaft S15, and anode ring S511 is fixed in annular groove
With cathode ring S512, there are interval and setting insulated from each other between anode ring S511 and cathode ring S512；Hold line linkage unit S5's
There are positive sliding block S41 and cathode sliding block S42 with the end set that line linkage unit S5 is connect is held；Positive sliding block S41 and anode
Ring S511 is fixed and is slidably connected in the circumferential in axially and radially upper relative position；Cathode sliding block S42 and cathode ring
S512 is fixed and is slidably connected in the circumferential in axially and radially upper relative position.
In this way, so that anode sliding block S41 and anode ring S511 is in counter electrode connection status always, but also negative
Pole sliding block S42 and cathode ring S512 is in counter electrode connection status always.Anode ring S511, cathode ring S512, positive sliding block
S41 and cathode sliding block S42 are made of electrically conductive material, such as metal, it is possible to further be copper.
Further, the opening of annular groove is provided with axial limiting portion S43, hold line linkage unit S5 with hold line
The end of the connection of linkage unit S5 is in T fonts substantially, which has annular flange S513 radially, annular groove
The degree of freedom of annular flange S513 is limited jointly with axial limiting portion S43, so that the flange is in axial restraint and can circumferentially live
It is dynamic.
Further, the opening width of annular groove is adapted with the radial dimension for holding line linkage unit S5, is held with limiting
Line linkage unit S5 and slip ring S4 are substantially stationary radially.The opening width of annular groove refers to the opening of annular groove in
The radial width of mandrel S15.
When ultrasonic probe S6 is rotated around central shaft S15, holds line linkage unit S5 and also rotated around central shaft S15.And
And hold line linkage unit S5 under the position-limiting action of annular groove, keep relative position to fix in the axial direction with slip ring S4, and hold
Line linkage unit S5 can circumferentially on relative to slip ring S4 slide.
Further, the positive counter electrode of anode ring S511 and battery connects, the cathode pair of cathode ring S512 and battery
Electrode is answered to connect.
Further, hold and be equipped in the accommodating cavity of line linkage unit S5 and motor and ultrasonic probe S6 counter electrodes company
The positive electric lead and negative electricity conducting wire connect, positive electric lead are connect with positive sliding block S41 counter electrodes, negative electricity conducting wire and cathode sliding block
S42 counter electrodes connect.
Further, it includes the first spool S51 and the second spool S52, the first spool S51 and slip ring to hold line linkage unit S5
S4 connections and annular flange S513 are located at the one end of the first spool S51, and the other end of the first spool S51 slideably holds
It is placed in the tube chamber of the second spool S52, the second spool S52 is fixedly connected with mounting base.
When axial movements of the ultrasonic probe S6 along central shaft S15, appearance line linkage unit S5 is scalable, the first spool S51
Length positioned at the tube chamber inside points of the second spool S52 can also change.
The present embodiment additionally provides a kind of ultrasonic imaging system, including any of the above-described kind of downhole ultrasonic imaging device,
Further include ultrasonic signal processing circuit, ultrasonic signal processing circuit, which is configured to convert ultrasonic signal to, induces crack
Image information.
Radiating circuit excitation ultrasonic transmitter work can be set, and place can be digitized by receiving the signal of energy converter acquisition
Reason, corresponding reception can realize that high-precision digitized signal, reception will be realized with Acquisition Circuit with Acquisition Circuit：Preceding storing
Greatly, filtering, automatic gain control, ADC acquisitions etc..Specific calculation system and the circuit being related to belong to the prior art, herein not
It repeats again.
When sound transmitting window S71 is made of polytetrafluoroethylene (PTFE), since polytetrafluoroethylene material bearing capacity is insufficient.Setting drilling
The purpose of pressure-regulating device is primarily to balance installation cavity and the pressure outside tube body S7, avoid sound transmitting window S71 by pressure
Damage.
With reference to Fig. 4, to the present embodiment provides boring pressure regulating devices to be introduced.Wherein, Fig. 2 and Fig. 4 difference
It is two parts of Fig. 1.
Boring pressure regulating device includes mainly pressure balancing piston S11, driving member S18, fuel feeding valve S12 and draining
Valve S13.Boring pressure regulating device shares a tube body S7 and central shaft S15, central shaft with downhole ultrasonic imaging device
S15 is set in tube body S7 and coaxial with tube body S7.
Cavity is separated into installation cavity and pressure regulating cavity independent of each other by pressure balancing piston S11.
Lower contact S16 is installed on the end of tube body S7, lower contact S16 and tube body S7 and central shaft S15 axial direction dynamic sealings,
Lower contact S16 and central shaft S15 surrounds an independent pressure chamber S17.The both ends of driving member S18 respectively with pressure balancing piston
S11 and lower contact S16 against.Further, driving member S18 is elastic component.Further, in this embodiment driving member S18 is
Spring.
The oil outlet of fuel feeding valve S12 is connected to pressure chamber S17, and fuel feeding valve S12 is configured to receive control signal and can be to
Pressure chamber S17 injection pressure oil, so that lower contact S16 is far from pressure balancing piston S11.
The oil inlet of gate gurgle valve S13 is connected to pressure chamber S17, and gate gurgle valve S13 is configured to receive control signal and can arrange
Go out the pressure oil in pressure chamber S17, so that lower contact S16 is close to pressure balancing piston S11.
Further, boring pressure regulating device further includes pressure sensor, and pressure sensor is configured to monitoring tube body
The pressure of pressure and installation cavity outside S7 simultaneously exports control signal.
For example, when pipe external pressure is more than the pressure in installation cavity, pressure oil in gate gurgle valve S13 discharge pressure chambers S17 with
Make lower contact S16 close to pressure balancing piston S11, driving member S18 pushes pressure balancing piston S11 to move downward, in installation cavity
Pressure increase.When pipe external pressure is less than the pressure in installation cavity, fuel feeding valve S12 is oily to pressure chamber S17 injection pressures, lower contact
S16 is moved right far from pressure balancing piston S11, dummy piston, and the pressure in installation cavity reduces.Make the pressure in installation cavity with this
Power and pipe external pressure are almost the same.
It these are only preferred embodiments of the present invention, be not intended to limit the utility model, for ability
For the technical staff in domain, various modifications and changes may be made to the present invention.It is all the spirit and principles of the utility model it
Interior, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (13)
1. a kind of boring pressure regulating device, which is characterized in that including：
Tube body, the tube body have the cavity surrounded by side wall；
Central shaft, the central shaft are set in the tube body and coaxial with the tube body；
Pressure balancing piston, the cavity is separated into installation cavity independent of each other to the pressure balancing piston and pressure is adjusted
Chamber；
Lower contact, the lower contact are installed on the end of the tube body, and the lower contact and the tube body and central shaft are axially dynamic
Sealing, the lower contact surround an independent pressure chamber with the central shaft；
Driving member, the both ends of the driving member respectively with pressure balancing piston and lower contact against；
Fuel feeding valve, the oil outlet of the fuel feeding valve are connected to the pressure chamber, and the fuel feeding valve is configured to receive control signal
And it can be to pressure chamber injection pressure oil, so that the lower contact is far from the pressure balancing piston；
Gate gurgle valve, the oil inlet of the gate gurgle valve are connected to the pressure chamber, and the gate gurgle valve is configured to receive control signal
And the pressure oil in the pressure chamber can be discharged, so that the lower contact is close to the pressure balancing piston.
2. boring pressure regulating device according to claim 1, which is characterized in that the boring pressure regulating device is also wrapped
Pressure sensor is included, the pressure of pressure and installation cavity that the pressure sensor is configured to outside monitoring tube body simultaneously exports control letter
Number.
3. boring pressure regulating device according to claim 1, which is characterized in that the driving member is elastic component.
4. boring pressure regulating device according to claim 3, which is characterized in that the driving member is spring.
5. a kind of downhole ultrasonic imaging device with boring pressure regulating device, which is characterized in that including according to claim
Any one of 1-4 boring pressure regulating devices, further include ultrasonic imaging apparatus；
The side wall, which is provided with, to block water and for the sound transmitting window that ultrasonic wave penetrates, the ultrasonic imaging apparatus includes ultrasonic imaging
Unit and driving mechanism；The ultrasound imaging unit includes at least one ultrasonic probe, and the ultrasound imaging unit is movably
It is installed on the installation cavity, the detection direction of the ultrasonic probe is towards the sound transmitting window；The driving mechanism is installed on described
Installation cavity, and the driving mechanism and the ultrasonic probe be sequentially connected with drive the ultrasonic probe along the axial direction of tube body and/
Or circumferential movement.
6. the downhole ultrasonic imaging device according to claim 5 with boring pressure regulating device, which is characterized in that institute
It states central shaft while further including mounting base positioned at the installation cavity and the pressure balance intracavitary, the ultrasound imaging unit, institute
It states ultrasonic probe and is installed on the mounting base, the mounting base is movably sheathed on the periphery of the central shaft, the driving
Mechanism is sequentially connected with the mounting base.
7. the downhole ultrasonic imaging device according to claim 6 with boring pressure regulating device, which is characterized in that institute
Stating central shaft has axially extending bore.
8. the downhole ultrasonic imaging device according to claim 6 with boring pressure regulating device, which is characterized in that institute
Central shaft is stated to be made of metal material.
9. the downhole ultrasonic imaging device with boring pressure regulating device described according to claim 6 or 7 or 8, feature
It is, the driving mechanism includes active straight spur gear, driven straight spur gear and power plant；The active is straight
Tooth roller gear and the power output portion of the power plant are sequentially connected, the driven straight spur gear and the central shaft
It is threadedly coupled to form lead screw pair, and the driven straight spur gear is engaged with the active straight spur gear；It is described from
Dynamic straight spur gear is connect with the mounting base in circumferential direction and/or axial restraint.
10. the downhole ultrasonic imaging device according to claim 9 with boring pressure regulating device, which is characterized in that
The driven straight spur gear is fixedly connected with the mounting base in circumferential and axial.
11. the downhole ultrasonic imaging device according to claim 9 with boring pressure regulating device, which is characterized in that
The power plant is motor；The installation cavity further includes an independent motor placing chamber, and the motor is installed on the motor
In placing chamber, and filled by insulation silicone oil in the motor placing chamber.
12. the downhole ultrasonic imaging device according to claim 11 with boring pressure regulating device, which is characterized in that
The motor is DC brushless motor.
13. the downhole ultrasonic imaging device according to claim 11 or 12 with boring pressure regulating device, feature
It is, the installation cavity further includes a battery installation cavity, and battery is equipped in the battery installation cavity, and the battery surpasses with described
Sonic probe and the connection of motor counter electrode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721684983.0U CN207689928U (en) | 2017-12-06 | 2017-12-06 | A kind of boring pressure regulating device and the downhole ultrasonic imaging device with the boring pressure regulating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721684983.0U CN207689928U (en) | 2017-12-06 | 2017-12-06 | A kind of boring pressure regulating device and the downhole ultrasonic imaging device with the boring pressure regulating device |
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| CN207689928U true CN207689928U (en) | 2018-08-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664181A (en) * | 2020-12-25 | 2021-04-16 | 国家能源集团宁夏煤业有限责任公司 | Imaging device for drilling and imager comprising same |
| CN112859945A (en) * | 2021-01-15 | 2021-05-28 | 四川大学 | Calibration platform hole pressure control system and control method thereof |
| CN116906028A (en) * | 2023-07-26 | 2023-10-20 | 中国科学院声学研究所 | Real-time imaging acquisition control system of wall of a well supersound |
-
2017
- 2017-12-06 CN CN201721684983.0U patent/CN207689928U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664181A (en) * | 2020-12-25 | 2021-04-16 | 国家能源集团宁夏煤业有限责任公司 | Imaging device for drilling and imager comprising same |
| CN112664181B (en) * | 2020-12-25 | 2022-11-25 | 国家能源集团宁夏煤业有限责任公司 | Imaging device for drilling and imager comprising same |
| CN112859945A (en) * | 2021-01-15 | 2021-05-28 | 四川大学 | Calibration platform hole pressure control system and control method thereof |
| CN116906028A (en) * | 2023-07-26 | 2023-10-20 | 中国科学院声学研究所 | Real-time imaging acquisition control system of wall of a well supersound |
| CN116906028B (en) * | 2023-07-26 | 2024-01-30 | 中国科学院声学研究所 | Real-time imaging acquisition control system of wall of a well supersound |
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