CN102094629A - Holder of ferromagnetic memory sensor for logging instruments - Google Patents
Holder of ferromagnetic memory sensor for logging instruments Download PDFInfo
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- CN102094629A CN102094629A CN2010105704718A CN201010570471A CN102094629A CN 102094629 A CN102094629 A CN 102094629A CN 2010105704718 A CN2010105704718 A CN 2010105704718A CN 201010570471 A CN201010570471 A CN 201010570471A CN 102094629 A CN102094629 A CN 102094629A
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Abstract
The invention discloses a holder of a ferromagnetic memory sensor for logging instruments, which comprises an upper joint, a central shaft, an adjusting assembly and a plurality of elastic measuring arms, wherein the upper joint is axially provided with a central hole, the upper end of the upper joint is connected with a logging instrument, and the lower end of the upper joint is connected with the upper end of the central shaft; the lower end of the central shaft is connected with the adjusting assembly; the elastic measuring arms are uniformly arranged around the central shaft, and each elastic measuring arm comprises a sensor shell, an upper spring blade and a lower spring blade; the sensor shell is a nonmagnetic sensor shell; the upper end of the upper spring blade is connected with the lower end of the upper joint, and the lower end of the upper spring blade is connected with the upper end of the sensor shell; the upper end of the lower spring blade is connected with the lower end of the sensor shell, and the lower end of the lower spring blade is connected with the upper end of the adjusting assembly; and the open radiuses of the elastic measuring arms can be adjusted by the adjusting assembly. The holder disclosed by the invention can overcome the defects of the existing geolock type sensor holders or bow spring blade type sensor holders, has the advantage of good wear-resisting performance, and is convenient and quick in operation.
Description
Technical field
The invention relates to a kind of pipe detection technology, particularly about the important component part of the strong magnetic memory detection device of a kind of oil well annular tube damage, specifically is about the strong magnetic memory sensor of a kind of logger support.
Background technology
Metal magnetic memory detecting method is a kind of novel Dynamic Non-Destruction Measurement, by detecting the stray field intensity of metal material own, judge the metal material stress concentration degree, pass judgment on the impairment scale of metal material with this, do not need externally-applied magnetic field because this method detects workpiece, and be able to extensive use.
At present, it is also just at the early-stage that metal magnetic memory detection technology is applied to sleeve in oil field damage check aspect, when detecting the workpiece damage according to the magnetic mnemonics, sensor need be pressed close to the characteristics of surface of the work, and casing damage detects the method that strong magnetic memory sensor is installed that adopts two kinds:
First kind of mounting method is, utilize telescoping ram that sensor is pressed close to internal surface of casing, and sensor is fixed on the gage beam of telescoping ram, after section is logged well to purpose in the instrument below, rotation by control telescoping ram backup motor, come the opening angle of control survey arm, thus the exposure level of the control sensor and the borehole wall, and the shortcoming of this method is a complicated operation, it is big circumferentially to take up room, the number of sensors of arranging is few, and detection resolution is low, and precision is low;
Second kind of mounting method is, the arcuate bombing leaf that utilizes whole no magnetic is as sensor stand, strong magnetic memory sensor is installed at the back side of arcuate bombing leaf, semielliptic spring is distributed on the central axis, form the lantern shape, can be by the opening angle of regulating spring sheet, the realization sensor contacts with internal surface of casing, in this method, arcuate bombing leaf must be no magnetic, the magnetic spring leaf is arranged owing to self be magnetized easily, has magnetic, and magnetic field intensity is higher, but magnetic memory signal is very faint, can produce shielding, makes measurement result can't reflect the degree of impairment of sleeve pipe accurately, do not cost an arm and a leg but there is the magnetic spring leaf, contact surface is easy to wear.
Summary of the invention
The objective of the invention is, the strong magnetic memory sensor of a kind of logger support is provided, it can overcome the shortcoming of existing telescoping ram formula and the existence of arcuate bombing leaf sensor stand, and has good, the convenient to operation advantage of anti-wear performance.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
The strong magnetic memory sensor of a kind of logger support, described sensor stand comprises top connection, central axis is adjusted assembly and a plurality of elasticity measurement arm; Top connection axially on have centre bore, the upper end of top connection connects logger, the lower end is connecting the upper end of central axis; The lower end of central axis is connecting the adjustment assembly; A plurality of elasticity measurement arms are around in the periphery of central axis equably, each elasticity measurement arm includes sensor housing, upper spring sheet and lower spring sheet, sensor housing is the sensor housing of no magnetic, the upper end of upper spring sheet connects the lower end of top connection, and the lower end of upper spring sheet connects the upper end of sensor housing, and the upper end of lower spring sheet connects the lower end of sensor housing, the lower end of lower spring sheet connects the upper end of adjusting assembly, and a plurality of elasticity measurement arms can be regulated it and open radius by adjusting assembly.
In preferred embodiment, each described sensor housing comprises main casing, the upper and lower end of main casing offers flat mouthful of groove respectively, upper and lower spring leaf is plugged in respectively in the flat mouthful of groove, the rear portion of main casing is provided with rear end cap, rear end cap is made for no magnetic sheet metal, is horizontally arranged with circular hole on the rear end cap, has the sensor storage tank between main casing and the rear end cap.
In preferred embodiment, permanent magnet is placed at the two ends of described sensor storage tank, and the middle part of top connection is provided with the spanner groove.
In preferred embodiment, the external surface of described main casing is provided with wear-resistant pad, and the vacant in-tank-solidification of sensor has high-temperature plastic.
In preferred embodiment, described upper and lower spring leaf has been the magnetic spring steel plate and has made, upper and lower spring leaf all is the bent angle setting away from an end of sensor housing, end near sensor housing all has the shell fragment connecting hole, insert at upper and lower spring leaf under the state of flat mouthful of groove, the position of the corresponding shell fragment connecting hole of main casing offers the housing connecting hole, and rivet passes shell fragment connecting hole and housing connecting hole, and upper and lower spring leaf is fixedlyed connected with main casing respectively.
In preferred embodiment, the external surface of the lower end of described top connection is provided with a plurality of installation grooves in the axial direction, the quantity that groove is installed equates with the quantity of elasticity measurement arm, the upper end of described upper spring sheet is plugged in respectively accordingly installs in the groove, and each root that groove is installed radially is provided with the perforation that is connected with centre bore; The outer cover of the junction of top connection and upper spring sheet is provided with protective sleeve, and protective sleeve is fixedly installed on the lower end of top connection.
In preferred embodiment, the top of the outside of described central axis is arranged with the lock ring spring, the lock ring spring is positioned at the inboard of elasticity measurement arm, the lead of sensor passes from the circular hole of described rear end cap, and penetrate from the lower end of lock ring spring, reclining central axis and be arranged in the perforation and the centre bore of top connection successively, then be connected with logger.
In preferred embodiment, described adjustment assembly comprises fixedly slide block assembly and pull-push piece, fixedly slide block assembly is set in the outside of central axis, the lower end of lower spring sheet is inserted in the fixedly upper end of slide block assembly respectively, fixedly slide block assembly can slide up and down along central axis by pull-push piece, and regulates the radius that opens of elasticity measurement arm.
In preferred embodiment; described fixedly slide block assembly comprises fixedly slide block and slide block protective sleeve; the slide block protective sleeve is installed in the fixedly outside of slide block; fixedly slide block has cylinder body; the upper end of cylinder body is connected with combination, and the cross section of combination evenly is provided with a plurality of flat mouthful greater than the cross section of cylinder body on the combination; the external surface of cylinder body is being axially arranged with the engagement groove that is connected with flat mouth respectively, and the lower end of lower spring sheet is positioned at engagement groove from flat mouthful of interior the insertion.
In preferred embodiment, described pull-push piece comprises the adjustment screw rod, adjusts spring and locknut, adjust the lower end that screw rod is connected central axis, locknut is threaded in the bottom of adjusting screw rod, adjusts spring housing and is located at the outside of adjusting screw rod, and be resisted against fixedly between the slide block assembly and locknut.
The characteristics and the advantage of mounting frame for sensor of the present invention are:
1, its upper and lower spring leaf split is provided with, the two is connected to the upper/lower terminal of sensor housing, but adjust assembly push-and-pull lower spring sheet, because the elastic reaction of upper and lower spring leaf, make sensor housing near or away from central axis, to regulate the radius that opens of elasticity measurement arm, so convenient to operation.And a plurality of elasticity measurement arms that enclose in the outside of central axis have adopted Lantern centralizer structure layout, so can increase the area coverage of sensor in pit shaft, have improved accuracy of detection.
2, its sensor housing is the sensor housing of no magnetic, and can adopt common spring leaf to come to provide enough support forces for sensor housing, has so reduced the manufacturing cost of sensor stand, makes its anti-wear performance good.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the strong magnetic memory sensor of the logger of embodiment of the invention support;
Fig. 2 is the cross-sectional schematic of the strong magnetic memory sensor of the logger of embodiment of the invention support;
Fig. 3 is the structural representation of the elasticity measurement arm of the embodiment of the invention;
Fig. 4 is the cross-sectional schematic of the sensor housing of the embodiment of the invention;
Fig. 5 is the fixedly slide block structure schematic diagram of the embodiment of the invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Need to prove that the position relation of described " upper and lower " is at Fig. 2 herein.
The strong magnetic memory sensor of logger support extremely shown in Figure 3 referring to Fig. 1, that the embodiment of the invention proposes, it comprises top connection 1, central axis 2 is adjusted assembly 3 and a plurality of elasticity measurement arm 4.Top connection 1 axially on have centre bore 11, the upper end of top connection 1 connects logger, the lower end connects the upper end of central axis 2, the lower end of central axis 2 connects adjusts assembly 3.A plurality of elasticity measurement arms 4 are around in the periphery of central axis 2 equably, each elasticity measurement arm 4 includes sensor housing 41, upper spring sheet 42 and lower spring sheet 43, sensor housing 41 is the sensor housing of no magnetic, the upper end of upper spring sheet 42 connects the lower end of top connection 1, the lower end of upper spring sheet 42 connects the upper end of sensor housing 41, the upper end of lower spring sheet 43 connects the lower end of sensor housing 41, the lower end of lower spring sheet 43 connects the upper end of adjusting assembly 3, and a plurality of elasticity measurement arms 4 can be regulated it and open radius by adjusting assembly 3.
When well logging, size according to casing diameter, can control the radius that opens of elasticity measurement arm 4 by adjusting assembly 3, be close to internal surface of sleeve pipe all the time to guarantee sensor housing 41 and interior sensor thereof, thereby make logger can detect the degree of impairment of sleeve pipe exactly.
In the embodiment of the invention, upper and lower spring leaf 42,43 split settings, the two is connected to the upper/lower terminal of sensor housing, but adjust assembly 3 push-and-pull lower spring sheets 43, because the elastic reaction of upper and lower spring leaf 42,43, make sensor housing 41 near or away from central axis 2, to regulate the radius that opens of elasticity measurement arm 4, so convenient to operation.And a plurality of elasticity measurement arms 4 that enclose in the outside of central axis 2 have adopted Lantern centralizer structure layout, so can increase the area coverage of sensor in pit shaft, have improved accuracy of detection.
In addition, the sensor housing 41 of the embodiment of the invention is the sensor housing of no magnetic, and promptly sensor housing 41 adopts no magnetic materials processing to form, and can adopt the braced structures of common spring leaf as sensor housing 41, thereby reduced the manufacturing cost of sensor stand, made its anti-wear performance good.Sensor housing 41 is used for encapsulated sensor, avoids the damage of ambient pressure and liquid with the protection sensor.
Wherein, the upper end of top connection 1 has the internal thread that matches with logger back pipe nipple, and top connection 1 is threaded with logger.The lower end of top connection 1 also can be threaded with central axis 2, and pin is gone into pin 13 between top connection 1 and central axis 2 afterwards, to prevent thread looseness between the two.Upper and lower spring leaf 42,43 all can be arcuate bombing leaf.
Cooperate shown in Figure 4, according to an embodiment of the invention, each sensor housing 41 comprises main casing 411, the upper and lower end of main casing 411 offers flat mouthful of groove 412 respectively, and upper and lower spring leaf 42,43 is plugged in respectively in the flat mouthful of groove 412, fixes by rivet, the rear portion of main casing 411 is provided with rear end cap 413, rear end cap 413 is made for no magnetic sheet metal, and rear end cap 413 1 ends have circular hole 414, have sensor storage tank 415 between main casing 411 and the rear end cap 413.Sensor is installed in the sensor storage tank 415, and the lead of sensor then passes from circular hole 414.Wherein, rear end cap 413 can be the rectangle with intermediate projections.
Furthermore, permanent magnet can be placed in the two ends of sensor storage tank 415, then is herein to be respectively arranged with round counterbore at the two ends of the vacant groove 415 of sensor, is used to place permanent magnet, permanent magnet is the cylinder bodily form, and permanent magnet can be used for the magnetic field of compensating jacket itself.The middle part of top connection 1 can have spanner groove 12, and it is used to place knuckle buster, to make things convenient for the installation and removal of detecting instrument.
The external surface of main casing 41 (being the face that main casing contacts with shaft in wall) is with wear-resistant pad 416, and wear-resistant pad 416 specifically can be heat resistant and wear resistant glue, to increase the abrasion resistance of sensor housing 41, the life-span of improving elasticity measurement arm 4.Be solidified with high-temperature plastic in the vacant groove 415 of sensor, sensor utilizes high-temperature plastic to be solidificated in the storage tank, to prevent that sensor is by the down-hole liquid submergence with damage by pressure.Wherein, rear end cap 413 can stick on the back side of main casing 411 with it by high-temperature plastic.
Cooperate shown in Figure 3, according to an embodiment of the invention, on, lower spring sheet 42,43 have been the magnetic spring steel plate makes, on, lower spring sheet 42,43 end bendings away from sensor housing 41, end near sensor housing 41 all has shell fragment connecting hole (not shown), last, lower spring sheet 42,43 insert under the state of flat mouthful of groove 412, the position of main casing 411 corresponding shell fragment connecting holes offers the housing connecting hole, rivet 417 correspondences are passed shell fragment connecting hole and housing connecting hole, will go up, lower spring sheet 42,43 fixedly connected with main casing 411 respectively.
Wherein, upper and lower spring leaf 42,43 can be common corrosion resistantly has the magnetic spring steel plate to process, and the expense that the magnetic spring steel plate arranged is much lower compared to no magnetic spring steel plate, thereby can reduce its manufacturing cost effectively.Be connected by rivet between spring leaf and the main casing 411.
According to an embodiment of the invention, the external surface of the lower end of top connection 1 is provided with a plurality of installation grooves in the axial direction, and the quantity that groove is installed equates with the quantity of elasticity measurement arm, for example is 18, and each width and degree of depth that groove is installed can equate.The upper end of upper spring sheet 42 is plugged in respectively accordingly installs in the groove, and each root that groove is installed radially is provided with the perforation that is connected with centre bore 11, and sensor conductor can wear from perforation and enter in the centre bore 11.Top connection 1 is provided with protective sleeve 5 with the outer cover of the junction of upper spring sheet 42; protective sleeve 5 is fixedly installed on the lower end of top connection 1; for example, can fixedly connected by jackscrew 51 (having four equally distributed jackscrews herein) between protective sleeve 5 and the top connection 1, to prevent protective sleeve 5 slippages.
Furthermore; protective sleeve 5 can be cylinder; when upper spring sheet 42 inserts the installation groove; protective sleeve 5 is set in the lower end position of top connection 1 ordinatedly; be enclosed within the outside of the upper end of upper spring sheet 42 simultaneously; can prevent that so upper spring sheet 42 from scattering, make upper spring sheet 42 firmly to be arranged on and install in the groove.In addition, the bent angle setting of upper spring sheet 42 upper ends, the upper end contact that can make upper spring sheet 42 and then makes the installation of upper spring sheet 42 firm between top connection 1 and protective sleeve 5.
The top of the outside of central axis 2 is arranged with lock ring spring 6, lock ring spring 6 is positioned at the inboard of elasticity measurement arm 4, the lead of sensor passes from the circular hole of rear end cap 413, and penetrate from the lower end of lock ring spring 6, reclining central axis 2 and be arranged in the perforation and the centre bore 11 of top connection 1 successively, then be connected with logger.Because lock ring spring 6 has expansion performance, when the opening radius and increase of elasticity measurement arm 4, sensor conductor has a thrust that makes progress to lock ring spring 6 under the tension of elasticity measurement arm 4, and lock ring spring 6 can shrink; When the opening radius and reduce of elasticity measurement arm 4, sensor conductor reduces the thrust that lock ring spring 6 makes progress, lock ring spring 6 can extend, can prevent that like this sensor conductor from not retraining and free disturbance, can drain in the slit of elasticity measurement arm 4, and then it is disconnected to avoid sensor conductor to be drawn in well logging, and produces the well logging accident.
According to an embodiment of the invention, adjust assembly 3 and comprise fixedly slide block assembly 31 and pull-push piece 32, fixedly slide block assembly 31 is set in the outside of central axis 2, the lower end of lower spring sheet 43 is inserted in the fixedly upper end of slide block assembly 31 respectively, fixedly slide block assembly 31 can slide up and down along central axis 2 by pull-push piece 32, fixedly the slip of slide block assembly 31 drive lower spring sheet 43 slides up and down, thereby regulates the radius that opens of elasticity measurement arm 4.
Furthermore; cooperate shown in Figure 5; fixedly slide block assembly 31 comprises fixedly slide block 311 and slide block protective sleeve 312; slide block protective sleeve 312 is installed in the fixedly outside of slide block 311; fixedly slide block 311 has cylinder body 312; the upper end of cylinder body 312 is connected with combination 313; the cross section of combination 313 is greater than the cross section of cylinder body 312; evenly be provided with a plurality of flat mouthful 314 (for example 18 flat mouthful) on the combination 313; the external surface of cylinder body 312 is being axially arranged with respectively and flat mouthful of 314 engagement grooves that are connected 315, and the lower end of lower spring sheet 43 is inserted in flat mouthful 314 and is positioned at engagement groove 315.Lower spring sheet 43 is positioned at engagement groove 315, can avoid elasticity measurement arm 4 to swing; Termination perk when slide block protective sleeve 312 can prevent 4 distortion of elasticity measurement arm.
Wherein, the longitudinal section of slide block protective sleeve 312 can be concave character type, and it is set in fixedly outside the slide block 311, adjusts spring 322 and withstands on the bottom surface of slide block protective sleeve, prevents its slippage.
Further, pull-push piece 32 comprises adjusts screw rod 321, adjust spring 322 and locknut 323, adjust the lower end that screw rod 321 is connected central axis 2, locknut 323 is threaded in the bottom of adjusting screw rod 321, adjust spring 322 and be set in the outside of adjusting screw rod 321, and be resisted against fixedly between the slide block assembly 31 and locknut 323.When needs were adjusted elasticity measurement arm 4, rotatable locknut 323 made it adjusting axially-movable on the screw rod 321, thereby drove fixedly slide block assembly slide block about in the of 31 by adjusting spring 322, made that with this opening angle of elasticity measurement arm 4 is adjusted.
Wherein, the two ends of adjusting screw rod 321 can be the closely-pitched angular thread, the centre is a trapezoidal thread, the screw thread of adjusting screw rod 321 upper ends is screwed in the screwed hole of central axis 2 lower ends, adjustment screw rod 321 is screwed togather with central axis 2, adjust between screw rod 321 and the central axis 2 and also can fix, thread off to prevent the screw thread between the two by pin 7.When well logging, when the sleeve pipe radius changes, to adjust spring 322 and can play cushioning effect, assurance elasticity measurement arm 4 is close to internal surface of sleeve pipe all the time.Locknut 323 can be the hexagonal locknut, is enclosed within to adjust on the screw rod 321, by regulating locknut 323, relies on the effect of adjusting spring 322 and elasticity measurement arm 4 elastic force, can regulate the radius that opens of elasticity measurement arm 4, adapts to the diameter of different sleeve pipes.Can screw rod 321 is outer install two locknuts 323 adjusting, so be for after the opening radius and adjust of elasticity measurement arm 4, can two locknuts 323 are mutual stubborn and locked, prevent to become flexible.
The above only is several embodiments of the present invention, and those skilled in the art can carry out various changes or modification to the embodiment of the invention and do not break away from the spirit and scope of the present invention according to application documents are disclosed.
Claims (10)
1. the strong magnetic memory sensor of a logger support is characterized in that described sensor stand comprises top connection, and central axis is adjusted assembly and a plurality of elasticity measurement arm; Top connection axially on have centre bore, the upper end of top connection connects logger, the lower end is connecting the upper end of central axis; The lower end of central axis is connecting the adjustment assembly; A plurality of elasticity measurement arms are around in the periphery of central axis equably, each elasticity measurement arm includes sensor housing, upper spring sheet and lower spring sheet, sensor housing is the sensor housing of no magnetic, the upper end of upper spring sheet connects the lower end of top connection, and the lower end of upper spring sheet connects the upper end of sensor housing, and the upper end of lower spring sheet connects the lower end of sensor housing, the lower end of lower spring sheet connects the upper end of adjusting assembly, and a plurality of elasticity measurement arms can be regulated it and open radius by adjusting assembly.
2. the strong magnetic memory sensor of logger according to claim 1 support, it is characterized in that, each described sensor housing comprises main casing, the upper and lower end of main casing offers flat mouthful of groove respectively, and upper and lower spring leaf is inserted in respectively in the flat mouthful of groove, fixes by rivet, the rear portion of main casing is provided with rear end cap, rear end cap is made for no magnetic sheet metal, and rear end cap one end has a circular hole, has the sensor storage tank between main casing and the rear end cap.
3. the strong magnetic memory sensor of logger according to claim 2 support is characterized in that there is round counterbore at the two ends of described sensor storage tank, and in order to place permanent magnet, the middle part of top connection is provided with the spanner groove.
4. the strong magnetic memory sensor of logger according to claim 3 support is characterized in that the external surface of described main casing is provided with wear-resistant pad, and sensor utilizes high-temperature plastic to be solidificated in the storage tank.
5. the strong magnetic memory sensor of logger according to claim 2 support, it is characterized in that, described upper and lower spring leaf has been the magnetic spring steel plate and has made, upper and lower spring leaf is away from the equal bending of an end of sensor housing, end near sensor housing all has the shell fragment connecting hole, insert at upper and lower spring leaf under the state of flat mouthful of groove, the position of the corresponding shell fragment connecting hole of main casing offers the housing connecting hole, the rivet correspondence is passed shell fragment connecting hole and housing connecting hole, and upper and lower spring leaf is fixedlyed connected with main casing respectively.
6. the strong magnetic memory sensor of logger according to claim 2 support, it is characterized in that, the external surface of the lower end of described top connection is provided with a plurality of installation grooves in the axial direction, the quantity that groove is installed equates with the quantity of elasticity measurement arm, the upper end of described upper spring sheet is plugged in respectively accordingly installs in the groove, and each root that groove is installed radially is provided with the perforation that is connected with centre bore; The outside of the junction of top connection and upper spring sheet is with protective sleeve, and protective sleeve is fixedly installed on the lower end of top connection.
7. the strong magnetic memory sensor of logger according to claim 6 support, it is characterized in that, the top of the outside of described central axis is arranged with the lock ring spring, the lock ring spring is positioned at the inboard of elasticity measurement arm, the lead of sensor passes from the circular hole of described rear end cap, and penetrate from the lower end of lock ring spring, recline central axis and be arranged in the perforation and the centre bore of top connection successively, then be connected with logger.
8. according to any strong magnetic memory sensor of the described logger support of claim 1 to 7, it is characterized in that, described adjustment assembly comprises fixedly slide block assembly and pull-push piece, fixedly slide block assembly is set in the outside of central axis, the lower end of lower spring sheet is inserted in the fixedly upper end of slide block assembly respectively, fixedly slide block assembly can slide up and down along central axis by pull-push piece, and regulates the radius that opens of elasticity measurement arm.
9. the strong magnetic memory sensor of logger according to claim 8 support; it is characterized in that; described fixedly slide block assembly comprises fixedly slide block and slide block protective sleeve; the slide block protective sleeve is installed in the fixedly outside of slide block; fixedly slide block has cylinder body; the upper end of cylinder body is connected with combination; the cross section of combination is greater than the cross section of cylinder body; evenly be provided with a plurality of flat mouthful on the combination; the external surface of cylinder body is being axially arranged with the engagement groove that is connected with flat mouth respectively, and the lower end of lower spring sheet is positioned at engagement groove from flat mouthful of interior the insertion.
10. the strong magnetic memory sensor of logger according to claim 9 support, it is characterized in that, described pull-push piece comprises the adjustment screw rod, adjust spring and locknut, adjust the lower end that screw rod is connected central axis, locknut is threaded in the bottom of adjusting screw rod, adjusts spring housing and is located at the outside of adjusting screw rod, and be resisted against fixedly between the slide block assembly and locknut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105704718A CN102094629A (en) | 2010-12-02 | 2010-12-02 | Holder of ferromagnetic memory sensor for logging instruments |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105704718A CN102094629A (en) | 2010-12-02 | 2010-12-02 | Holder of ferromagnetic memory sensor for logging instruments |
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| CN102094629A true CN102094629A (en) | 2011-06-15 |
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| CN2010105704718A Pending CN102094629A (en) | 2010-12-02 | 2010-12-02 | Holder of ferromagnetic memory sensor for logging instruments |
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| CN105937392A (en) * | 2016-06-02 | 2016-09-14 | 陕西华晨石油科技有限公司 | Device and method for finding abnormal temperature points in production well |
| CN106640041A (en) * | 2016-12-20 | 2017-05-10 | 西安威盛电子科技股份有限公司 | Adjustable elastic piece self-folding sensor support structure and logger |
| CN108222923A (en) * | 2017-12-19 | 2018-06-29 | 中国石油天然气集团公司 | Electrically conduct device and application method |
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| CN106640041A (en) * | 2016-12-20 | 2017-05-10 | 西安威盛电子科技股份有限公司 | Adjustable elastic piece self-folding sensor support structure and logger |
| CN108222923A (en) * | 2017-12-19 | 2018-06-29 | 中国石油天然气集团公司 | Electrically conduct device and application method |
| CN109541015A (en) * | 2018-11-01 | 2019-03-29 | 中国海洋石油集团有限公司 | Water proof tube edge pipe internal detector |
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Inventor after: Fan Jianchun Inventor after: Zhang Laibin Inventor after: Wen Dong Inventor after: Sun Bingcai Inventor after: Zhang Jing Inventor after: Zhang Guangwei Inventor after: Qi Lijuan Inventor before: Fan Jianchun Inventor before: Zhang Laibin Inventor before: Wen Dong Inventor before: Sun Bingcai Inventor before: Zhang Jing Inventor before: Zhang Guangwei Inventor before: Qi Lijuan |
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Application publication date: 20110615 |