CN209486310U - Downhole ultrasonic survey meter - Google Patents

Abstract

The utility model relates to downhole ultrasonic survey meters, including mounting rack on the ground is arranged, it is lifted on mounting rack towards the lifting device gone up and down in well, ultrasonic probe is installed on lifting device, ultrasonic transducer and driving device are provided in ultrasonic probe, further include the reception device of setting on the ground, passes through wireless or wired connection between reception device and ultrasonic probe.When ultrasonic probe is placed into well, it needs first by ultrasonic transducer scaling at the axle center close to shaft, while so that ultrasonic probe reduces space in ultrasonic probe occupancy well during lifting, but also ultrasonic probe is not easy to collide and rub with well inner wall, damage.After ultrasonic probe is placed into detection position, the ultrasonic transducer in driving device driving ultrasonic probe is coupled in hole hole wall, and the ultrasonic probe after contraction is more easier to be placed into specified detecting location.

Description

Downhole ultrasonic survey meter

Technical field

The utility model relates to the technical fields of geological exploration, more particularly, to downhole ultrasonic survey meter.

Background technique

After many years of reforming and opening up to the outside world, although modern society grows a lot than before, therefore development does not stop It is stagnant not before, still ceaselessly advancing.In geological exploration field, city rail and traffic, railway, water tunnel etc., When using shield construction, the remaining weathering boulder of onion weathering in stratum rushes large-size rock fragment in diluvial formation, applies to shield Work causes safely serious adverse effect.

In current geological prospecting means, exploration mainly probing and ground physical prospecting for boulder (block stone), because of orphan Distribution in the stratum of stone has randomness, and particle size is different with buried depth, needs highdensity brill using probing means Hole can disclose some, and because of the finiteness of bore diameter and drill hole density, part boulder can be still missed, and can not one One detects, even if drilling, which discloses, has arrived boulder, and discloses some for arriving boulder, the space size of boulder can not still be obtained Accurate parameter is obtained, the very big wasting of resources is brought to huge stone handling.Resolution ratio, the boulder of equipment are limited to using physical prospecting means The factors such as buried depth, size and can not accurately detect position and the size of boulder, detection result not can be used directly in tunnel The engineering construction of road huge stone handling causes certain trouble to construction, needs to improve this.

Utility model content

In view of the deficienciess of the prior art, having the purpose of this utility model is to provide downhole ultrasonic survey meter The advantages of ultrasonic probe is hardly damaged.

The above-mentioned purpose of the utility model has the technical scheme that

Including mounting rack on the ground is arranged, it is lifted on the mounting rack towards the lifting device gone up and down in well, institute It states and ultrasonic probe is installed on lifting device, several ultrasonic transducers and several for driving are provided in ultrasonic probe The ultrasonic transducer is synchronized toward driving device close or far from the movement of boulder direction, further includes being arranged on the ground Reception device passes through wireless or wired connection between the reception device and the ultrasonic probe.

By using above-mentioned technical proposal, when ultrasonic probe to be placed into well, needing first will be in ultrasonic probe Ultrasonic transducer be reduced to the central axis of ultrasonic probe so that ultrasonic probe reduces ultrasonic wave during lifting Probe and the friction and collision of hole wall, eliminate ultrasonic probe damage caused by friction or collision because of ultrasonic probe and hole wall, Block the problem of ultrasonic probe can not reach target position.Drive ultrasonic transducer towards separate or lean on using driving device The direction of adjacent pores wall moves, and can solve ultrasonic transducer and hole wall can not be close to and lead to that measurement error is larger, even mistake The problem of, moreover, the ultrasonic probe after shrinking is more easier to be placed into specified detecting location.The data detected It is transmitted in reception device and is stored.Reception device by a certain percentage carries out boulder using the spatial position on boulder boundary empty Between three-dimensional imaging, really reflect the information of boulder.

The utility model is further arranged to: the ultrasonic probe includes shaft, and the driving device includes that driving turns The actuator of the central axes rotation of axis around the shaft, is provided with teeth in the shaft, several activities is engaged in the shaft Bar, the ultrasonic probe are mounted on one end of the motion bar, are additionally provided with the activity of being used to support in the ultrasonic probe The support frame of bar, the driving motor are mounted on support frame as described above, and the motion bar is slidably connected with support frame as described above, described The outlet stretched out for motion bar is provided on support frame.

By using above-mentioned technical proposal, the support that motion bar is played during motion bar is movable by support frame Effect, ultrasonic transducer is coupled along the mode of vertical hole wall with hole wall, ultrasonic transducer and hole wall Contact is good, and support frame plays the role of support to motion bar, so that on the support frame for the placement that motion bar can consolidate.

The utility model is further arranged to: several motion bars are around the circumferentially distributed of the shaft.

By using above-mentioned technical proposal, by using above-mentioned technical proposal, by the way that motion bar is circumferentially distributed, so that Ultrasonic probe emits towards surrounding ultrasonic wave, and the coverage area of ultrasonic wave is wider, can accurately measure boulder The information such as size and shape.

The utility model is further arranged to: at least six groups of the motion bar, it is same that every group of motion bar is included in shaft The motion bar of two relative motions on one horizontal plane.

By using above-mentioned technical proposal, the ultrasonic transducer by the way that multiple groups are arranged launches more intensive ultrasound Wave, and the covering surface of ultrasonic wave is wider, the ultrasonic wave penetrated into boulder is also more intensive accordingly, feeds back on unit boulder Data on to receiver are also just more fine, also more according to the shapes and sizes of the calculated boulder of the data detected Accurately, to facilitate subsequent boulder to be crushed the progress of work.

The utility model is further arranged to: the motion bar is uniformly distributed around the periphery of the shaft and every group of motion bar Position in the horizontal direction is not overlapped, and the level height of every group of motion bar is inconsistent.

By using above-mentioned technical proposal, by being uniformly arranged motion bar, so that the region of each ultrasonic probe detection Area equation can form the region of circumference detection centered on shaft, and search coverage is big, be conducive to detect more Data, while detection efficient and accuracy are improved, it is detected in detection without rotating lifting gear, it is unnecessary to reduce Trouble.Using the tranmitting frequency of the adjustable different groups of the arrangement mode of grouping, avoid making measurement error because frequency is close Increase, favorably with the progress of detection operations.

The utility model is further arranged to: one end of the motion bar is fixed with rigid mounting rod, the ultrasonic wave Energy converter is mounted on the mounting rod, and the ultrasonic transducer on every mounting rod is no less than two, no less than two super Acoustic wave transducer is arranged along the length direction of mounting rod.

By using above-mentioned technical proposal, by the unpliant characteristic of mounting rod of rigidity, ultrasonic transducer and hole Momentum between wall is not easily broken mounting rod, so that ultrasonic transducer resists hole wall and is not susceptible to shake；No less than Two ultrasonic transducers emit ultrasonic wave on vertical direction, to adapt to deeper exploration hole, so that entire ultrasonic wave Survey meter has preferable suitability and practicability.

The utility model is further arranged to: the periphery of the ultrasonic probe is coated with protective cover flexible, the guarantor The thickness of shield is not more than 9mm.

By using above-mentioned technical proposal, protection is played the role of to ultrasonic probe by protective cover flexible, simultaneously It is coupled but also ultrasonic probe withstands protective cover outward with hole wall, thickness wears ultrasonic wave no more than 9mm protective cover Saturating protective cover continues to external radiation ultrasonic wave, meanwhile, when ultrasonic probe and detected object are hit, because of protection flexible Cover has certain elasticity, so that ultrasonic probe is not easy to be damaged, influences the progress for measuring work, while also extending ultrasound The service life of wave probe.

The utility model is further arranged to: the protective cover is covered over couplant.

By using above-mentioned technical proposal, cooperate ultrasonic probe by ultrasonic transducer and detected material by coupling layer Air between body is excluded, and the contact between ultrasonic transducer and hole wall is good, so that ultrasonic transducer is launched The ultrasonic energy come effectively penetrates boulder and achievees the purpose that detection.

The utility model is further arranged to: the actuator includes turbine, worm screw and the drive being fixedly connected with worm screw Dynamic motor, the turbine are engaged with the worm screw, and the turbine is fixedly connected with one end of the shaft.

By using above-mentioned technical proposal, the transmission speed of turbine and worm is slower, to the motion bar by turbine indirect drive For, ultrasonic transducer can be coupled more slowly with hole wall, reduce rushing when ultrasonic transducer is contacted with hole wall Amount, ultrasonic transducer are less prone to damage；And because of the latching characteristics of turbine and worm screw, shaft is less prone to rotation, ultrasonic wave Energy converter remains in detection process and abuts with hole wall that ultrasonic transducer can continue to be detected to external radiation ultrasonic wave Work, and can guarantee that measured data are more accurate.

In conclusion the advantageous effects of the utility model are as follows:

1. needing when ultrasonic probe to be placed into well first by ultrasonic transducer scaling in the axle center close to shaft Place, while so that ultrasonic probe reduces space in ultrasonic probe occupancy well during lifting, but also ultrasonic wave Probe is not easy to collide and rub with well inner wall, damages.After ultrasonic probe is placed into detection position, driving dress The ultrasonic transducer set in driving ultrasonic probe is coupled in hole hole wall, and the ultrasonic probe after contraction is more easier It is placed into specified detecting location；

2. by the way that motion bar is circumferentially distributed, so that ultrasonic probe emits towards surrounding ultrasonic wave, ultrasonic wave Coverage area is wider, can accurately measure the information such as the size and shape of boulder；

3. by being uniformly arranged motion bar, so that the region area of each ultrasonic probe detection is equal, it can be with shaft Centered on formed a circumference detection region, search coverage is big, be conducive to detect more data, while improve detection effect Rate and accuracy are detected without rotating lifting gear in detection, reduce unnecessary trouble.Using the row of grouping The tranmitting frequencies of the adjustable different groups of column mode, avoid increasing measurement error because frequency is close, favorably and detection operations Progress；

4. launch more intensive ultrasonic wave by the ultrasonic probe that multiple groups are arranged, and the covering surface of ultrasonic wave compared with Extensively, the ultrasonic wave penetrated into boulder is also more intensive accordingly, and the reception in ultrasonic probe is fed back on unit boulder Data on device are also just more fine, and the shapes and sizes according to the calculated boulder of the data detected are also more accurate, To facilitate subsequent boulder to be crushed the progress of work；

5. by being uniformly arranged motion bar, so that the region area of each ultrasonic probe detection is equal, it can be with shaft Centered on formed a circumference detection region, search coverage is big, be conducive to detect more data, detection when without rotation Turn lifting device to be detected, reduces unnecessary trouble；

6. playing the role of protection to ultrasonic probe by protective cover flexible, while but also ultrasonic probe is outside It withstands protective cover to couple with hole wall, thickness continue ultrasonic wave can with pierce through the protection cover to external radiation no more than 9mm protective cover Ultrasonic wave, meanwhile, when ultrasonic probe and detected object are hit, because protective cover flexible has certain elasticity, make It obtains ultrasonic probe to be not easy to be damaged, influences the progress for measuring work, while also extending the service life of ultrasonic probe.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the present embodiment；

Fig. 2 is the relation schematic diagram of motion bar and support frame in the present embodiment；

Fig. 3 is the relation schematic diagram of shaft and motion bar in the present embodiment；

Fig. 4 is the schematic diagram of tote box.

In figure, 1, mounting rack；11, support plate；12, support rod；13, fixed plate；2, lifting device；21, steering assembly； 22, winding rope；23, coiler；24, platform sling；3, ultrasonic probe；31, ultrasonic transducer；32, shaft；33, teeth；34, Motion bar；35, mounting rod；36, support frame；4, driving device；41, driving motor；42, turbine；43, worm screw；5, tote box； 51, data line interface；52, power switch；53, ultrasonic probe switchs；54, battery case；55, data line；6, it protects Shield；7, sensor；8, couplant；9, connecting rope.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

It referring to Fig.1, is downhole ultrasonic survey meter disclosed by the utility model, including the mounting rack being mounted on above well head 1, it is lifted on mounting rack 1 towards the lifting device 2 gone up and down in well, is provided with ultrasonic probe 3, ultrasonic wave on lifting device 2 It is provided with several ultrasonic transducers 31 in probe 3 and several ultrasonic transducers 31 of driving are synchronous close or separate towards hole wall Driving device 4, further include setting reception device on the ground, between reception device and ultrasonic probe 3 by wireless or Person's wired connection.

Mounting rack 1 includes three support rods 12 being hinged in same support plate 11, and three support rods 12 are in when strutting Triangle, support plate 11 are placed on the surface of well head, and three support rods 12 are circumferentially placed around well head.Lifting device 2 includes turning To component 21, it is wire-wrapped in the winding rope 22 of steering assembly 21 and the coiler 23 of driving winding 22 folding and unfoldings of rope, in the present embodiment, Steering assembly 21 is fixed pulley, and fixed pulley is fixed in support plate 11 by two pieces of platform slings 24, in other examples, is turned to Component 21 can be bull stick, and bar rotation is mounted in support plate 11.Perpendicular to a wherein branch in one of support plate 11 Strut 12 is fixedly connected with fixed plate 13, and fixed plate 13 is fixed with far from one end of support rod 12 for detecting 2 liters of lifting device The sensor 7 of height drops, and in the present embodiment, sensor 7 is the displacement sensor 7 of model GTZ-71CP, and coiler 23 is Hoist engine, coiler 23 are placed on well head on one side.

Referring to Figures 1 and 2, ultrasonic probe 3 includes support frame 36, and support frame 36 is in hollow barrel-shaped and top end opening, Support frame 36 is fixedly connected with winding rope 22.The periphery of ultrasonic probe 3 is coated with protective cover 6 flexible, and protective cover 6 is in top What is be open is hollow barrel-shaped, and the top of protective cover 6 is flushed with the top of support frame 36, top and the support frame 36 of protective cover 6 Connecting rope 9 flexible is connected between top.Couplant 8 is covered on the periphery of protective cover 6.The thickness of protective cover 6 is not more than 9mm, in the present embodiment, protective cover 6 are made by rubber, protective cover 6 with a thickness of 2mm, couplant 8 is aqueous high molecular Gel.

Referring to Fig. 2 and Fig. 3, shaft 32 is rotatably connected in support frame 36, driving device 4 is by turbine 42, worm screw 43 and drives The driving motor 41 of the 32 central axes rotation around the shaft of turn axis 32 forms, and turbine 42 is engaged with worm screw 43, turbine 42 and shaft 32 one end is fixedly connected, and the center line of turbine 42 and shaft 32 is located at same straight line.The rotation axis of driving motor 41 and worm screw 43 are fixedly connected, and driving motor 41 is fixedly connected on the top of mounting rack 1.In the present embodiment, driving motor 41 is servo electricity Machine.

32 circumferential recess is formed with concave-convex alternately teeth 33 around the shaft in shaft 32, is engaged with several work in shaft 32 Lever 34, several motion bars 34 around the shaft 32 it is circumferentially distributed, be formed on support frame 36 for motion bar 34 stretch out outlet, When motion bar 34 extend out to limiting length, the critical protrusion of 34 extension end of motion bar is less than 34 other end of motion bar to branch The distance of 36 inner sidewall of support.

At least six groups of motion bar 34 in shaft 32, in the present embodiment, motion bar 34 has six groups, in other embodiments In, motion bar 34 can be eight groups.Six groups of motion bars 34 around the shaft 32 periphery be uniformly distributed and every group of motion bar 34 is in level Position on direction is not overlapped, and the height of every group of motion bar 34 is inconsistent, and every group of motion bar 34 is by 32 same level of shaft The motion bar 34 of two two pairs of movements forms on face, and every motion bar 34 has the angle between the side of teeth 33 and shaft 32 to be in 30°。

The movable end of motion bar 34 is fixed with rigid mounting rod 35, the length and branch of mounting rod 35 perpendicular to motion bar 34 The height of support 36 is consistent, and ultrasonic transducer 31 is placed on mounting rod 35, the ultrasonic transducer on every mounting rod 35 31 are no less than two, and in the present embodiment, ultrasonic transducer 31 shares 13, and 13 ultrasonic probes 3 are along mounting rod 35 Length direction is evenly spaced on.

Each ultrasonic transducer 31 is made of receiver and transmitter, receiver and transmitting on every mounting rod 35 Device replaces alternate intervals, and in the present embodiment, ultrasonic probe 3 is the ultrasonic wave of Jining Hao Ke detecting instrument Co., Ltd production Angle probe.

Referring to Fig. 4, in the present embodiment, reception device is tote box 5, is connected between tote box 5 and ultrasonic probe 3 Data line 55(is referring to Fig. 1), in other examples, transmission mode between tote box 5 and ultrasonic probe 3 can be with It is transmitted by WIFI.The data line interface 51 connecting with data line 55 is installed, for controlling entirely in tote box 5 The ultrasonic probe switch 53 that power switch 52, the control ultrasonic probe 3 of 5 on/off of tote box open and close, tote box 5 are interior also Battery case 54 is installed, battery is placed in battery case 54, battery is powered to entire tote box 5, convenient in field work.

The operating condition and principle of the present embodiment are as follows:

When work, the winding for first passing through coiler 23 extends winding rope 22 so that ultrasonic probe 3 enters exploration hole It is interior, then start driving motor 41 and makes motion bar 34 by ultrasonic transducer 31 vertically toward the direction of hole wall close to until ultrasound Wave transducer 31 is coupled with hole wall, and then the transmitter in ultrasonic probe 3 launches ultrasonic wave detecting to boulder, is surpassed Receiver in sonic probe 3 receives the signal detected to be transferred back at tote box 5 by data line 55 again, for Staff, which records, to be calculated.

After turning to by design winding rope 22 by steering assembly 21, ultrasonic probe 3 can be put into well vertically Interior, winding rope 22 is by the winding of coiler 23 so that putting in the length of the stretching of ultrasonic transducer 31 of exploration hole with detection Position difference be adjusted, the winding of coiler 23 saves manually-operated trouble, accelerates working efficiency when measurement.

Worm screw 43 is driven to rotate by driving motor 41 so that motion bar 34 stretches under the drive of shaft 32, to drive The direction of ultrasonic transducer 31 toward boulder is close or separate, and motion bar 34 can be by the ultrasonic transducer on motion bar 34 The distance between 31 and boulder are adjusted to suitable position to be conducive to so that ultrasonic transducer 31 can be closely adhered to hole wall Reduce error when measurement, so that test data is more accurate.

Self-locking characteristic when being engaged by turbine 42 and worm screw 43 so that worm gear can only worm screw 43 be rotated by Shaft 32 is driven to rotate, so that shaft 32 is less prone to autobiography and makes ultrasonic wave after ultrasonic transducer 31 is coupled with hole wall Energy converter 31 is separated with hole wall, is influenced receiver and transmitter and is normally emitted ultrasonic wave and receive the work of ultrasonic wave.Turbine 42 and worm screw 41 cooperate when the more other drive mechanisms of revolving speed it is slow so that shaft 32 drive motion bar 34 stretch out when, ultrasound 31 device of wave transducing is slowly coupled with hole wall, excessive and cause to surpass to reduce momentum when ultrasonic transducer 31 is contacted with hole wall The damage of acoustic wave transducer 31 extends the service life of ultrasonic probe 3.

By the way that the outlet stretched out for motion bar 34 is arranged on the side wall of support frame 36, the side wall of support frame 36 is to motion bar 34 play the role of positioning and support, and motion bar 34 can slide on support frame 36.During transferring ultrasonic probe 3, By being reduced to ultrasonic transducer 31 at the support frame 36, with reduce ultrasonic probe 3 during lifting with hole wall Friction occurs or collides and cause the damage of ultrasonic probe 3, is also beneficial to ultrasonic probe 3 smoothly reaching target position Place, to measure work.

By the way that the ultrasonic transducer 31 of multiple groups is arranged, multiple orientation of exploration hole are detected to obtain the number of multiple groups According to so that the data that detect of ultrasonic probe 3 are more precisely, comprehensively, and the ultrasonic transducer 31 for being grouped setting can be with The tranmitting frequency for adjusting different groups avoids increasing measurement error because frequency is close, is conducive to staff according to ultrasonic wave The information such as spatial position, quantity of boulder at the data calculating that receiver in probe 3 receives.

Increase the quantity of the ultrasonic transducer 31 in the vertical direction of every motion bar 34 by setting mounting rod 35, and For the mounting rod 35 of rigidity when motion bar 34 drives ultrasonic transducer 31 to couple with hole wall, mounting rod 35 can resist guarantor outward Shield 6 couples with hole wall and is not susceptible to fracture, and extends the service life of mounting rod 35, is conducive to the progress for measuring work.

Ultrasonic probe 3 is protected by the way that protective cover 6 is arranged, in the process that ultrasonic probe 3 goes up and down or detects In, the shaking because of winding rope 22 is not easy so that shock or friction occur for ultrasonic probe 3 and hole wall, and ultrasonic probe 3 is not It is easily damaged, extends the service life of ultrasonic probe 3.Because protective cover 6 is with a thickness of 2mm, ultrasonic wave may pass through without by The relatively figure of merit influenced, while ultrasonic transducer 31 can push protective cover 6 to move out, and guarantee that measurement work can be smoothly It carries out.Protective cover 6 makes during measurement, and ultrasonic probe 3 is not easy to be stained with water, and causes the precision of ultrasonic probe 3 Decline or damage influence the progress for measuring work.

Through the couplant 8 on protective cover 6 when ultrasonic transducer 31 is coupled on the hole wall of exploration hole, by ultrasonic wave Air discharge between energy converter 31 and hole wall, so that the ultrasonic wave of the transmitter transmitting in ultrasonic probe 3 can be better It enters in exploration hole, so that the information such as shape, size and number to boulder detect, improves the precision of detection.

The folding and unfolding length of winding rope 22 is measured when lifting device 2 is gone up and down by sensor 7, allows to basis The depth of drilling hole cooperates sensor 7 to confirm the height of the decline of lifting device 2, is conducive to accurately put ultrasonic probe 3 It sets onto target position, has saved the preliminary preparation of detection.

The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical Within novel protection scope.

Claims (9)

1. downhole ultrasonic survey meter, it is characterised in that: including being arranged mounting rack (1) on the ground, on the mounting rack (1) It is lifted with towards the lifting device (2) gone up and down in well, is equipped with ultrasonic probe (3) on the lifting device (2), ultrasonic wave is visited It is synchronous with for driving several the ultrasonic transducer (31) toward close that several ultrasonic transducers (31) are provided in head (3) Or the driving device (4) far from the movement of boulder direction, further include setting reception device on the ground, the reception device with Pass through wireless or wired connection between the ultrasonic probe (3).

2. downhole ultrasonic survey meter according to claim 1, it is characterised in that: the ultrasonic probe (3) includes turning Axis (32), the driving device (4) include the actuator of drive shaft (32) the central axes rotation of (32) around the shaft, the shaft (32) it is provided on teeth (33), is engaged with several motion bars (34) on the shaft (32), ultrasonic probe (3) peace Mounted in one end of the motion bar (34), the support for being used to support motion bar (34) is additionally provided in the ultrasonic probe (3) Frame (25), driving motor (41) are mounted on support frame as described above (25), and the motion bar (34) and support frame as described above (25) are slided It connects, the outlet stretched out for motion bar (34) is provided on support frame as described above (25).

3. downhole ultrasonic survey meter according to claim 2, it is characterised in that: several motion bars (34) are around described Shaft (32) it is circumferentially distributed.

4. downhole ultrasonic survey meter according to claim 3, it is characterised in that: the motion bar (34) at least six Group, every group of motion bar (34) are included in the motion bar (34) of two relative motions in shaft (32) same level.

5. downhole ultrasonic survey meter according to claim 4, it is characterised in that: the motion bar (34) is around the shaft (32) periphery is uniformly distributed and the position of every group of motion bar (34) in the horizontal direction is not overlapped, the water of every group of motion bar (34) Flat height is inconsistent.

6. according to any downhole ultrasonic survey meter of claim 2-5, it is characterised in that: the one of the motion bar (34) End is fixed with rigid mounting rod (35), and the ultrasonic transducer (31) is mounted on the mounting rod (35), every installation Ultrasonic transducer (31) on bar (35) is no less than two, and no less than two ultrasonic transducers (31) are along mounting rod (35) Length direction setting.

7. according to downhole ultrasonic survey meter as claimed in claim 3 to 5, it is characterised in that: the ultrasonic probe (3) Periphery be coated with protective cover flexible (6), the thickness of the protective cover (6) is not more than 9mm.

8. downhole ultrasonic survey meter according to claim 7, it is characterised in that: the periphery of the protective cover (6) covers There are couplant (8).

9. downhole ultrasonic survey meter according to claim 6, it is characterised in that: the actuator include turbine (42), Worm screw (43) and the driving motor (41) being fixedly connected with worm screw (43), the turbine (42) are engaged with the worm screw (43), The turbine (42) is fixedly connected with one end of the shaft (32).