CN204419161U - The passive magnetic combination vibration absorber of directional tool - Google Patents
The passive magnetic combination vibration absorber of directional tool Download PDFInfo
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- CN204419161U CN204419161U CN201420584707.7U CN201420584707U CN204419161U CN 204419161 U CN204419161 U CN 204419161U CN 201420584707 U CN201420584707 U CN 201420584707U CN 204419161 U CN204419161 U CN 204419161U
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Abstract
The utility model relates to the passive magnetic combination vibration absorber of a kind of directional tool, can be used for the vibration protection of directional tool, forms primarily of inclinometer system, axial vibration damping system and radial vibration-reducing system; Inclinometer system comprises shunting connector, upper inserting tube, battery short section, connector, lower inserting tube, circuit pipe nipple, measures pipe nipple and guide shoe; Axial vibration damping system comprises top, sliding bearing, dynamic magnetic steel component, cylindrical shell, determines magnetic steel component and joint; Radial vibration-reducing system comprises rubber membrane and damping fluid.Axial vibration damping system is by the passive magnetic vibration damping of magnetic force shock-absorber, and radial vibration-reducing system utilizes the viscous-elastic behaviour of elastomeric material and the viscid characteristic vibration damping of damping fluid.The utility model can reduce axial vibration and the radial vibration of directional tool in drilling process, the inclinometer certainty of measurement preventing vibratory impulse from causing declines and component breakage, ensure that directional tool normally works, improve directional tool precision, reliability and life-span, thus guarantee Oil/gas Well bearing accuracy, guide drill bit to creep into along desired trajectory, promote drilling efficiency, accelerate bit speed, reduce drilling cost.
Description
Technical field
The utility model relates to the passive magnetic combination vibration absorber of a kind of directional tool, axial vibration and the radial vibration of directional tool in drilling process can be reduced, prevent vibratory impulse from causing inclinometer certainty of measurement to decline and component breakage, ensure that directional tool normally works, improve directional tool reliability and life-span, thus guarantee Oil/gas Well bearing accuracy, drill bit is guided to creep into along predetermined well track, promote drilling efficiency, accelerate bit speed, reduce drilling cost.
Background technology
Directional tool can not interrupt measuring various drilling parameter (hole deviation, orientation, tool-face etc.) under drilling condition accurately, reliably, in real time, and convenient operation personnel accurately control well track.Along with petroleum resources are day by day exhausted, hydrocarbon reservoirs structure is increasingly sophisticated, petrol resources exploitation difficulty continues to increase, and proposes requirements at the higher level to drilling technology, the importance of directed drilling is more and more subject to people and pays close attention to.In directed drilling process, high accuracy directional tool can provide the parameters such as refined orientation, hole deviation, tool-face for operating personnel in real time, makes its timely clear and definite down-hole equipment duty, realizes well track and accurately control.Directed drilling in the new Oil/gas Well development process of current China and the window sidetracking in OW secondary development process, be badly in need of high accuracy directional tool, guarantee that well track is round and smooth and wellbore quality is outstanding, to reduce drilling failure, ensure the highly effective and safe exploitation of labyrinth Oil/gas Well.
For ensureing orientation, hole deviation, the isoparametric certainty of measurement of tool-face, directional tool is general to be installed near drill bit.In drilling process, drill bit bump, crushing and shearing-crushing formation rock, will cause sustained vibration and impact to directional tool.When drilling time or vibration level exceed certain value, directional tool certainty of measurement will be caused to decline and the breakage of internal precision device.Therefore, directional tool must be equipped with vibration absorber, carries out vibration protection to it.
Current directional tool axially adopts single India-rubber spring vibration damping, the common O type rubber ring vibration damping of radial employing.This combination vibration damping mode protected effect is limited, under strong vibration and large impact, will lose efficacy, and caused directional tool internal precision device failure under the fierce vibration that especially bouncing of drilling tool causes.Wireless drilling inclinometers inclination measuring short piece combined shock absorption method described in number of patent application 201110450075.6 and combined shock absorption device; axially adopt drum type rubber snubber vibration damping; radial employing edge has elastic caoutchouc flower pattern circle and the O type rubber ring combination vibration damping of hole, to strengthen vibration damping protective effect.But flower pattern rubber ring and O type rubber ring and inclination measuring short piece contact area all less, even if adopt multiple combination, vibration protection effect is also not remarkable.A kind of petroleum drilling logger shock mitigation system described in number of patent application 201220713189.5; axially adopt multiple shock reducing pipe nipple vibration damping; the vibration damping glued membrane of the densely covered elongated micelle in radial employing surface and large damping phase change medium vibration damping; this MULTIPLE COMPOSITE vibration insulating system; improve vibration damping protected effect; but large damping phase change medium directly contacts with urceolus, easily produce infiltration and reveal, destroy sophisticated sensor part in cylinder.Above-mentioned patent all utilizes elastomeric material damping characteristic vibration damping, realizes vibration protection.But in Drilling vibration process, damping rubber absorbs directional tool vibration, directional tool kinetic energy is converted to rubber heat energy, causes rubber temperature to raise, and damping vibration attenuation effect declines, and also accelerates ageing of rubber simultaneously.
Summary of the invention
The problem that the utility model technology solves is: overcome the deficiencies in the prior art, provides that a kind of vibration damping protected effect is good, the passive magnetic combination vibration absorber of high, the swift directional tool of dependable performance, long working life, damping stiffness.
Technical solution of the present utility model is: the passive magnetic combination vibration absorber of a kind of directional tool, can be used for the vibration protection of directional tool, primarily of inclinometer system, axial vibration damping system and radial vibration-reducing system composition, it is characterized in that: inclinometer system comprises: shunting connector, upper inserting tube, battery short section, connector, lower inserting tube, circuit pipe nipple, measurement pipe nipple and guide shoe composition, axial vibration damping system comprises: the first top, second top, 3rd top, 4th top, 5th top, first sliding bearing, second sliding bearing, 3rd sliding bearing, 4th sliding bearing, 5th sliding bearing, first dynamic magnetic steel component, second dynamic magnetic steel component, 3rd dynamic magnetic steel component, 4th dynamic magnetic steel component, 5th dynamic magnetic steel component, first cylindrical shell, second cylindrical shell, 3rd cylindrical shell, 4th cylindrical shell, 5th cylindrical shell, first determines magnetic steel component, second determines magnetic steel component, 3rd determines magnetic steel component, 4th determines magnetic steel component, 5th determines magnetic steel component, first joint, second joint, 3rd joint, 4th joint and the 5th joint, radial vibration-reducing system comprises: rubber membrane and damping fluid, shunting connector is positioned at inserting tube upper end, and be tightly connected by screw thread and upper inserting tube, first top, first sliding bearing, first dynamic magnetic steel component, first cylindrical shell, first determines magnetic steel component and the first joint is all positioned at inserting tube radially inner side, first top is positioned on the downside of the inner conical surface of inserting tube upper end, and with upper inserting tube upper end inner conical surface close contact, first middle part, top is positioned at the first sliding bearing radially inner side, and with the first sliding bearing matched in clearance, first lower end, top is positioned at the first dynamic magnetic steel component radially inner side, and be connected with the first dynamic magnetic steel component by screw thread, first sliding bearing lower end is positioned at the first cylindrical shell radially inner side, and be connected with the first cylindrical shell by screw thread, first dynamic magnetic steel component is positioned at the first lower end, top and the first cylindrical shell radially inner side, and with the first cylindrical shell matched in clearance, first cylindrical shell is positioned at the first sliding bearing, first dynamic magnetic steel component, first determines magnetic steel component and the first joint radial outside, first cylindrical shell top and bottom are connected with the first sliding bearing and the first joint respectively by screw thread, in the middle part of first cylindrical shell, dynamic magnetic steel component and first determines magnetic steel component matched in clearance with first, first determines magnetic steel component is positioned at the first upper end of joint, and be connected with the first joint by screw thread, battery short section is positioned at the first joint lower end and the second upper end of joint, all be connected with the first joint and the second joint by screw, second top, second sliding bearing, second dynamic magnetic steel component, second cylindrical shell, second determines magnetic steel component and the second joint is all positioned at inserting tube radially inner side, second top is positioned at connector upper end, and with connector upper surface close contact, second middle part, top is positioned at the second sliding bearing radially inner side, and with the second sliding bearing matched in clearance, second upper end, top is positioned at the second dynamic magnetic steel component radially inner side, and be connected with the second dynamic magnetic steel component by screw thread, second sliding bearing upper end is positioned at the second cylindrical shell radially inner side, and be connected with the second cylindrical shell by screw thread, second dynamic magnetic steel component is positioned at the second upper end, top and the second cylindrical shell radially inner side, and with the second cylindrical shell matched in clearance, second cylindrical shell is positioned at the second sliding bearing, second dynamic magnetic steel component, second determines magnetic steel component and the second joint radial outside, second cylindrical shell top and bottom are connected with the second joint and the second sliding bearing respectively by screw thread, in the middle part of second cylindrical shell, dynamic magnetic steel component and second determines magnetic steel component matched in clearance with second, second determines magnetic steel component is positioned at the second joint lower end, and be connected with the second joint by screw thread, connector is positioned at inserting tube lower end and lower inserting tube upper end, all be connected with upper inserting tube and the test seal of tube by screw thread, 3rd top, 3rd sliding bearing, 3rd dynamic magnetic steel component, 3rd cylindrical shell, 3rd determines magnetic steel component and the 3rd joint is all positioned at test caliber to the inside, 3rd top is positioned on the downside of the inner conical surface of lower inserting tube upper end, and with lower inserting tube upper end inner conical surface close contact, 3rd middle part, top is positioned at the 3rd sliding bearing radially inner side, and with the 3rd sliding bearing matched in clearance, 3rd lower end, top is positioned at the 3rd dynamic magnetic steel component radially inner side, and be connected with the 3rd dynamic magnetic steel component by screw thread, 3rd sliding bearing lower end is positioned at the 3rd cylindrical shell radially inner side, and be connected with the 3rd cylindrical shell by screw thread, 3rd dynamic magnetic steel component is positioned at the 3rd lower end, top and the 3rd cylindrical shell radially inner side, and with the 3rd cylindrical shell matched in clearance, 3rd cylindrical shell is positioned at the 3rd sliding bearing, 3rd dynamic magnetic steel component, 3rd determines magnetic steel component and the 3rd joint radial outside, 3rd cylindrical shell top and bottom are connected with the 3rd sliding bearing and the 3rd joint respectively by screw thread, in the middle part of 3rd cylindrical shell, dynamic magnetic steel component and the 3rd determines magnetic steel component matched in clearance with the 3rd, 3rd determines magnetic steel component is positioned at the 3rd upper end of joint, and be connected with the 3rd joint by screw thread, circuit pipe nipple is positioned at the 3rd joint lower end and the 4th upper end, top, and be connected with the 3rd joint by screw, 4th top, 4th sliding bearing, 4th dynamic magnetic steel component, 4th cylindrical shell, 4th determines magnetic steel component and the 4th joint is all positioned at test caliber to the inside, 4th top is positioned on the downside of circuit pipe nipple, and with circuit pipe nipple lower surface close contact, 4th middle part, top is positioned at the 4th sliding bearing radially inner side, and with the 4th sliding bearing matched in clearance, 4th lower end, top is positioned at the 4th dynamic magnetic steel component radially inner side, and be connected with the 4th dynamic magnetic steel component by screw thread, 4th sliding bearing lower end is positioned at the 4th cylindrical shell radially inner side, and be connected with the 4th cylindrical shell by screw thread, 4th dynamic magnetic steel component is positioned at the 4th lower end, top and the 4th cylindrical shell radially inner side, and with the 4th cylindrical shell matched in clearance, 4th cylindrical shell is positioned at the 4th sliding bearing, 4th dynamic magnetic steel component, 4th determines magnetic steel component and the 4th joint radial outside, 4th cylindrical shell top and bottom are connected with the 4th sliding bearing and the 4th joint respectively by screw thread, in the middle part of 4th cylindrical shell, dynamic magnetic steel component and the 4th determines magnetic steel component matched in clearance with the 4th, 4th determines magnetic steel component is positioned at the 4th upper end of joint, and be connected with the 4th joint by screw thread, measure pipe nipple and be positioned at the 4th joint lower end and the 5th upper end of joint, all be connected with the 4th joint and the 5th joint by screw, rubber pattern and damping fluid be positioned at test caliber to the inside with measurement pipe nipple radial outside, rubber pattern is fixed by screws in be measured on pipe nipple external cylindrical surface, damping fluid is sealed in rubber pattern inside, 5th top, 5th sliding bearing, 5th dynamic magnetic steel component, 5th cylindrical shell, 5th determines magnetic steel component and the 5th joint is all positioned at test caliber to the inside, 5th top is positioned at guide shoe upper end, and with guide shoe upper surface close contact, 5th middle part, top is positioned at the 5th sliding bearing radially inner side, and with the 5th sliding bearing matched in clearance, 5th upper end, top is positioned at the 5th dynamic magnetic steel component radially inner side, and be connected with the 5th dynamic magnetic steel component by screw thread, 5th sliding bearing upper end is positioned at the 5th cylindrical shell radially inner side, and be connected with the 5th cylindrical shell by screw thread, 5th dynamic magnetic steel component is positioned at the 5th upper end, top and the 5th cylindrical shell radially inner side, and with the 5th cylindrical shell matched in clearance, 5th cylindrical shell is positioned at the 5th sliding bearing, 5th dynamic magnetic steel component, 5th determines magnetic steel component and the 5th joint radial outside, 5th cylindrical shell top and bottom are connected with the 5th joint and the 5th sliding bearing respectively by screw thread, in the middle part of 5th cylindrical shell, dynamic magnetic steel component and the 5th determines magnetic steel component matched in clearance with the 5th, 5th determines magnetic steel component is positioned at the 5th joint lower end, and be connected with the 5th joint by screw thread, guide shoe is positioned at lower inserting tube lower end, and be connected with the test seal of tube by screw thread, first top, first sliding bearing, first dynamic magnetic steel component, first cylindrical shell, first determines magnetic steel component and the first joint forms the first magnetic force shock-absorber, second top, second sliding bearing, second dynamic magnetic steel component, second cylindrical shell, second determines magnetic steel component and the second joint forms the second magnetic force shock-absorber, 3rd top, 3rd sliding bearing, 3rd dynamic magnetic steel component, 3rd cylindrical shell, 3rd determines magnetic steel component and the 3rd joint composition the 3rd magnetic force shock-absorber, 4th top, 4th sliding bearing, 4th dynamic magnetic steel component, 4th cylindrical shell, 4th determines magnetic steel component and the 4th joint composition the 4th magnetic force shock-absorber, 5th top, 5th sliding bearing, 5th dynamic magnetic steel component, 5th cylindrical shell, 5th determines magnetic steel component and the 5th joint composition the 5th magnetic force shock-absorber.
Described upper inserting tube, the first cylindrical shell, the second cylindrical shell, the 3rd cylindrical shell, the 4th cylindrical shell, the 5th cylindrical shell, the first joint, the second joint, the 3rd joint, the 4th joint, the 5th joint, lower inserting tube are superduralumin 7075 material.Described connector is beryllium-bronze QBe2.The bearing shell of the first described sliding bearing, the second sliding bearing, the 3rd sliding bearing, the 4th sliding bearing and the 5th sliding bearing is macromolecular material G-92.Described first dynamic magnetic steel component, second dynamic magnetic steel component, 3rd dynamic magnetic steel component, 4th dynamic magnetic steel component, 5th dynamic magnetic steel component, first determines magnetic steel component, second determines magnetic steel component, 3rd determines magnetic steel component, 4th determines magnetic steel component, 5th determines the annular magnetic steel that magnetic steel component respectively comprises the arrangement of five Halbach structure, first dynamic magnetic steel component, second dynamic magnetic steel component, 3rd dynamic magnetic steel component, 4th dynamic magnetic steel component, five annular magnetic steel magnetizing directions of the 5th dynamic magnetic steel component are followed successively by from inside to outside: axially upwards, radially-inwardly, axially downwards, radially outward with axially upwards, first determines magnetic steel component, second determines magnetic steel component, 3rd determines magnetic steel component, 4th determines magnetic steel component, 5th five the annular magnetic steel magnetizing directions determining magnetic steel component are followed successively by from inside to outside: axially downwards, radially-inwardly, axially upwards, radially outward with axially downwards, annular magnetic steel is samarium cobalt permanent magnet alloy Y X30.Described rubber pattern is FFKM fluorubber material, the about 1mm of rubber membrane thickness.Described damping fluid is dimethicone.When device in the raw time, described first dynamic magnetic steel component and first determines magnetic steel component, the second dynamic magnetic steel component and second determines magnetic steel component, the 3rd dynamic magnetic steel component and the 3rd determines magnetic steel component, the 4th dynamic magnetic steel component and the 4th determines magnetic steel component, the 5th dynamic magnetic steel component and the 5th is determined magnetic steel component and all be there is certain yoke distance, and size is about 1 ~ 3mm.
The principle of such scheme is: as illustrated in figures la-c, and magnetic force shock-absorber is all installed, for it provides axial vibration to protect in battery short section, circuit pipe nipple and measurement pipe nipple two ends; Measure pipe nipple and include accurate measurement device, require higher to vibration damping protection, except installation shaft is to except magnetic force shock-absorber, also at its external cylindrical surface, radial vibration-reducing system need be additionally installed.To measure pipe nipple, when inclinometer in the raw (not vibrated and impact), measure pipe nipple and be in equilibrium state under its two ends magnetic force shock-absorber repulsion effect; Under creeping into duty (vibrated and impact), its axial vibration surge protection process is, measure pipe nipple under the vibratory impulse power effect of axial upwards (downwards), its upper end magnetic force shock-absorber magnetic gap reduces (increase), repulsion increases (reduction), lower end magnetic force shock-absorber magnetic gap increases (reduction), repulsion reduces (increase), measure pipe nipple two ends magnetic force shock-absorber and produce make a concerted effort contrary with vibratory impulse power, hinder and measure pipe nipple axial vibration, the kinetic energy in simultaneously stability axial vibration impact process; Under creeping into duty (vibrated and impact); its radial vibration surge protection process is; measure pipe nipple under radial vibration impact force action; radially random vibration; cause rubber pattern and damping fluid varied in thickness; force it to produce and measure the rightabout damping force of pipe nipple impact force, hindering the radial vibration of measurement pipe nipple to amplify further, the kinetic energy in simultaneously stability radial vibration impact process.As shown in Figure 3, for increasing rigidity and the damping of magnetic force shock-absorber, annular magnetic steel adopts Halbach structure arrangement, to increase magnetic gap internal magnetic field intensity and magnetic flux, improves vibratory impulse protected effect.In addition, impact lower magnetic force shock absorber annular magnetic steel for preventing intense vibration and mutually collide and damage, all rubber spring is installed in annular magnetic steel end.
The utility model compared with prior art advantage is: (1) the utility model adopts multiple passive magnetic force shock-absorber vibration damping based on Halbach structure due to axially main, overcome elastomeric material shock absorber ageing of rubber, damping force decay, the shortcoming such as application life is short, damping stiffness is low, have that vibration damping protected effect is good, reliability is high, long working life, damping stiffness are high, react the advantage such as fast; (2), damping effect little with flower pattern rubber ring contact area weak compared with, the rubber membrane contact area of inner sealing damping fluid is large, and damping effect is stronger, vibration protection more remarkable effect, avoids damping fluid simultaneously and reveals.
Accompanying drawing explanation
Fig. 1 a, Fig. 1 b, Fig. 1 c are the utility model STRUCTURE DECOMPOSITION schematic diagram;
Fig. 2 is the utility model top partial sectional view;
Fig. 3 is that the utility model moves magnetic steel component and determines magnetic steel component sectional view;
Fig. 4 a is the utility model radial vibration-reducing system three-dimensional structure schematic diagram;
Fig. 4 b is the utility model radial vibration-reducing system sectional view.
Detailed description of the invention
As shown in Figure 1, the passive magnetic combination vibration absorber of a kind of directional tool, can be used for the vibration protection of directional tool, wherein: inclinometer system comprises: shunting connector 1, upper inserting tube 2, battery short section 9, connector 10, lower inserting tube 11, circuit pipe nipple 12, measurement pipe nipple 15 and guide shoe 16 form, axial vibration damping system comprises: the first top 3a, second top 3b, 3rd top 3c, 4th top 3d, 5th top 3e, first sliding bearing 4a, second sliding bearing 4b, 3rd sliding bearing 4c, 4th sliding bearing 4d, 5th sliding bearing 4e, first dynamic magnetic steel component 5a, second dynamic magnetic steel component 5b, 3rd dynamic magnetic steel component 5c, 4th dynamic magnetic steel component 5d, 5th dynamic magnetic steel component 5e, first cylindrical shell 6a, second cylindrical shell 6b, 3rd cylindrical shell 6c, 4th cylindrical shell 6d, 5th cylindrical shell 6e, first determines magnetic steel component 7a, second determines magnetic steel component 7b, 3rd determines magnetic steel component 7c, 4th determines magnetic steel component 7d, 5th determines magnetic steel component 7e, first joint 8a, second joint 8b, 3rd joint 8c, 4th joint 8d and the 5th joint 8e, radial vibration-reducing system comprises: rubber membrane 14 and damping fluid 15, shunting connector 1 is positioned at inserting tube 2 upper end, and be tightly connected by screw thread and upper inserting tube 2, first top 3a, first sliding bearing 4a, first dynamic magnetic steel component 5a, first cylindrical shell 6a, first determines magnetic steel component 7a and the first joint 8a is all positioned at inserting tube 2 radially inner side, first top 3a is positioned on the downside of the inner conical surface of inserting tube 2 upper end, and with upper inserting tube 2 upper end inner conical surface close contact, the first sliding bearing 4a radially inner side is positioned in the middle part of first top 3a, and with the first sliding bearing 4a matched in clearance, first 3a lower end, top is positioned at the first dynamic magnetic steel component 5a radially inner side, and be connected with the first dynamic magnetic steel component 5a by screw thread, first sliding bearing 4a lower end is positioned at the first cylindrical shell 6a radially inner side, and be connected with the first cylindrical shell 6a by screw thread, first dynamic magnetic steel component 5a is positioned at the first 3a lower end, top and the first cylindrical shell 6a radially inner side, and with the first cylindrical shell 6a matched in clearance, first cylindrical shell 6a is positioned at the first sliding bearing 4a, first dynamic magnetic steel component 5a, first determines magnetic steel component 7a and the first joint 8a radial outside, first cylindrical shell 6a top and bottom are connected with the first sliding bearing 4a and the first joint 8a respectively by screw thread, in the middle part of first cylindrical shell 6a, dynamic magnetic steel component 5a and first determines magnetic steel component 7a matched in clearance with first, first determines magnetic steel component 7a is positioned at the first joint 8a upper end, and be connected with the first joint 8a by screw thread, battery short section 9 is positioned at the first joint 8a lower end and the second joint 8b upper end, all be connected with the first joint 8a and the second joint 8b by screw, second top 3b, second sliding bearing 4b, second dynamic magnetic steel component 5b, second cylindrical shell 6b, second determines magnetic steel component 7b and the second joint 8b is all positioned at inserting tube 2 radially inner side, second top 3b is positioned at connector 10 upper end, and with connector 10 upper surface close contact, the second sliding bearing 4b radially inner side is positioned in the middle part of second top 3b, and with the second sliding bearing 4b matched in clearance, second 3b upper end, top is positioned at the second dynamic magnetic steel component 5b radially inner side, and be connected with the second dynamic magnetic steel component 5b by screw thread, second sliding bearing 4b upper end is positioned at the second cylindrical shell 6b radially inner side, and be connected with the second cylindrical shell 6b by screw thread, second dynamic magnetic steel component 5b is positioned at the second 3b upper end, top and the second cylindrical shell 6b radially inner side, and with the second cylindrical shell 6b matched in clearance, second cylindrical shell 6b is positioned at the second sliding bearing 4b, second dynamic magnetic steel component 5b, second determines magnetic steel component 7b and the second joint 8b radial outside, second cylindrical shell 6b top and bottom are connected with the second joint 8b and the second sliding bearing 4b respectively by screw thread, in the middle part of second cylindrical shell 6b, dynamic magnetic steel component 5b and second determines magnetic steel component 7b matched in clearance with second, second determines magnetic steel component 7b is positioned at the second joint 8b lower end, and be connected with the second joint 8b by screw thread, connector 10 is positioned at inserting tube 2 lower end and lower inserting tube 11 upper end, all be tightly connected by screw thread and upper inserting tube 2 and lower inserting tube 11, 3rd top 3c, 3rd sliding bearing 4c, 3rd dynamic magnetic steel component 5c, 3rd cylindrical shell 6c, 3rd determines magnetic steel component 7c and the 3rd joint 8c is all positioned at lower inserting tube 11 radially inner side, 3rd top 3c is positioned on the downside of the inner conical surface of lower inserting tube 11 upper end, and with lower inserting tube 11 upper end inner conical surface close contact, the 3rd sliding bearing 4c radially inner side is positioned in the middle part of 3rd top 3c, and with the 3rd sliding bearing 4c matched in clearance, 3rd 3c lower end, top is positioned at the 3rd dynamic magnetic steel component 5c radially inner side, and be connected with the 3rd dynamic magnetic steel component 5c by screw thread, 3rd sliding bearing 4c lower end is positioned at the 3rd cylindrical shell 6c radially inner side, and be connected with the 3rd cylindrical shell 6c by screw thread, 3rd dynamic magnetic steel component 5c is positioned at the 3rd 3c lower end, top and the 3rd cylindrical shell 6c radially inner side, and with the 3rd cylindrical shell 6c matched in clearance, 3rd cylindrical shell 6c is positioned at the 3rd sliding bearing 4c, 3rd dynamic magnetic steel component 5c, 3rd determines magnetic steel component 7c and the 3rd joint 8c radial outside, 3rd cylindrical shell 6c top and bottom are connected with the 3rd sliding bearing 4c and the 3rd joint 8c respectively by screw thread, in the middle part of 3rd cylindrical shell 6c, dynamic magnetic steel component 5c and the 3rd determines magnetic steel component 7c matched in clearance with the 3rd, 3rd determines magnetic steel component 7c is positioned at the 3rd joint 8c upper end, and be connected with the 3rd joint 8c by screw thread, circuit pipe nipple 12 is positioned at the 3rd joint 8c lower end and the 4th 3d upper end, top, and be connected with the 3rd joint 8c by screw, 4th top 3d, 4th sliding bearing 4d, 4th dynamic magnetic steel component 5d, 4th cylindrical shell 6d, 4th determines magnetic steel component 7d and the 4th joint 8d is all positioned at lower inserting tube 11 radially inner side, 4th top 3d is positioned on the downside of circuit pipe nipple 12, and with circuit pipe nipple 12 lower surface close contact, the 4th sliding bearing 4d radially inner side is positioned in the middle part of 4th top 3d, and with the 4th sliding bearing 4d matched in clearance, 4th 3d lower end, top is positioned at the 4th dynamic magnetic steel component 5d radially inner side, and be connected with the 4th dynamic magnetic steel component 5d by screw thread, 4th sliding bearing 4d lower end is positioned at the 4th cylindrical shell 6d radially inner side, and be connected with the 4th cylindrical shell 6d by screw thread, 4th dynamic magnetic steel component 5d is positioned at the 4th 3d lower end, top and the 4th cylindrical shell 6d radially inner side, and with the 4th cylindrical shell 6d matched in clearance, 4th cylindrical shell 6d is positioned at the 4th sliding bearing 4d, 4th dynamic magnetic steel component 5d, 4th determines magnetic steel component 7d and the 4th joint 8d radial outside, 4th cylindrical shell 6d top and bottom are connected with the 4th sliding bearing 4d and the 4th joint 8d respectively by screw thread, in the middle part of 4th cylindrical shell 6d, dynamic magnetic steel component 5d and the 4th determines magnetic steel component 7d matched in clearance with the 4th, 4th determines magnetic steel component 7d is positioned at the 4th joint 8d upper end, and be connected with the 4th joint 8d by screw thread, measure pipe nipple 13 and be positioned at the 4th joint 8d lower end and the 5th joint 8e upper end, all be connected with the 4th joint 8d and the 5th joint 8e by screw, rubber pattern 14 and damping fluid 15 are positioned at lower inserting tube 11 radially inner side and measure pipe nipple 13 radial outside, rubber pattern 14 is fixed by screws in be measured on pipe nipple 13 external cylindrical surface, it is inner that damping fluid 15 is sealed in rubber pattern 14, 5th top 3e, 5th sliding bearing 4e, 5th dynamic magnetic steel component 5e, 5th cylindrical shell 6e, 5th determines magnetic steel component 7e and the 5th joint 8e is all positioned at lower inserting tube 11 radially inner side, 5th top 3e is positioned at guide shoe 16 upper end, and with guide shoe 16 upper surface close contact, the 5th sliding bearing 4e radially inner side is positioned in the middle part of 5th top 3e, and with the 5th sliding bearing 4e matched in clearance, 5th 3e upper end, top is positioned at the 5th dynamic magnetic steel component 5e radially inner side, and be connected with the 5th dynamic magnetic steel component 5e by screw thread, 5th sliding bearing 4e upper end is positioned at the 5th cylindrical shell 6e radially inner side, and be connected with the 5th cylindrical shell 6e by screw thread, 5th dynamic magnetic steel component 5e is positioned at the 5th 3e upper end, top and the 5th cylindrical shell 6e radially inner side, and with the 5th cylindrical shell 6e matched in clearance, 5th cylindrical shell 6e is positioned at the 5th sliding bearing 4e, 5th dynamic magnetic steel component 5e, 5th determines magnetic steel component 7e and the 5th joint 8e radial outside, 5th cylindrical shell 6e top and bottom are connected with the 5th joint 8e and the 5th sliding bearing 4e respectively by screw thread, in the middle part of 5th cylindrical shell 6e, dynamic magnetic steel component 5e and the 5th determines magnetic steel component 7e matched in clearance with the 5th, 5th determines magnetic steel component 7e is positioned at the 5th joint 8e lower end, and be connected with the 5th joint 8e by screw thread, guide shoe 16 is positioned at lower inserting tube 11 lower end, and be tightly connected by screw thread and lower inserting tube 11, first top 3a, first sliding bearing 4a, first dynamic magnetic steel component 5a, first cylindrical shell 6a, first determines magnetic steel component 7a and the first joint 8a forms the first magnetic force shock-absorber, second top 3b, second sliding bearing 4b, second dynamic magnetic steel component 5b, second cylindrical shell 6b, second determines magnetic steel component 7b and the second joint 8b forms the second magnetic force shock-absorber, 3rd top 3c, 3rd sliding bearing 4c, 3rd dynamic magnetic steel component 5c, 3rd cylindrical shell 6c, 3rd determines magnetic steel component 7c and the 3rd joint 8c forms the 3rd magnetic force shock-absorber, 4th top 3d, 4th sliding bearing 4d, 4th dynamic magnetic steel component 5d, 4th cylindrical shell 6d, 4th determines magnetic steel component 7d and the 4th joint 8d forms the 4th magnetic force shock-absorber, 5th top 3e, 5th sliding bearing 4e, 5th dynamic magnetic steel component 5e, 5th cylindrical shell 6e, 5th determines magnetic steel component 7e and the 5th joint 8e forms the 5th magnetic force shock-absorber.
Fig. 2 comes directly towards 3 partial sectional views in the utility model, come directly towards and be made up of aluminum top 31 and end cover rubber 32, end cover rubber 32 comes directly towards 31 upper ends by the high temperature vulcanized aluminum that is fixed on, prevent aluminum from coming directly towards 31 because clashing into breakage, play damping action simultaneously, aluminum top 31 is superduralumin 7075 material, and end cover rubber 32 is FFKM fluorubber material.
Fig. 3 is dynamic magnetic steel component 5 and the sectional view determining magnetic steel component 7 in the utility model, dynamic magnetic steel component 5 is made up of dynamic magnet steel seat 51, dynamic annular magnetic steel 52 and dynamic rubber spring 53, dynamic magnet steel seat 51 is connected with dynamic rubber spring 53 by screw thread, dynamic annular magnetic steel 52 is bonded in dynamic magnet steel seat 51 end face cannelure by epoxide-resin glue, and dynamic annular magnetic steel 52 5 annular magnetic steel magnetizing directions are followed successively by from inside to outside: axially upwards, radially-inwardly, axially downwards, radially outward with axially upwards, determine magnetic steel component 7 by determining magnet steel seat 71, determine annular magnetic steel 72 and determine rubber spring 73 to form, determine magnet steel seat 71 by screw thread with determine rubber spring 73 and be connected, determine annular magnetic steel 72 to be bonded in by epoxide-resin glue and to determine in magnet steel seat 72 end face cannelure, determine annular magnetic steel 72 5 annular magnetic steel magnetizing directions to be followed successively by from inside to outside: axially downwards, radially-inwardly, axially upwards, radially outward with axially downwards, move annular magnetic steel 52 and determine annular magnetic steel 72 5 annular magnetic steels and be samarium cobalt permanent magnet alloy material YX30, move annular magnetic steel 52 and determine annular magnetic steel 72 and there is certain yoke distance, size is about 1 ~ 3mm, move rubber spring 53 and determine rubber spring 73 and be FFKM fluorubber material.
Fig. 4 a is radial vibration insulating system three-dimensional structure schematic diagram in the utility model, Fig. 4 b is radial vibration insulating system sectional view in the utility model, radial vibration-reducing system is made up of rubber membrane 14, damping fluid 15, upper bolt aperture 17 and lower screw hole 18, it is inner that damping fluid 15 is sealed in rubber membrane 14, rubber membrane 14 is FFKM fluorubber material, damping fluid 15 is dimethicone, and upper bolt aperture 17 and lower screw hole 18 lay respectively at rubber membrane 14 top and bottom, for fixed radial vibration insulating system.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. a directional tool is with passive magnetic combination vibration absorber, primarily of inclinometer system, axial vibration damping system and radial vibration-reducing system composition, it is characterised in that: inclinometer system comprises: shunting connector (1), upper inserting tube (2), battery short section (9), connector (10), lower inserting tube (11), circuit pipe nipple (12), measurement pipe nipple (15) and guide shoe (16) composition, axial vibration damping system comprises: the first top (3a), second top (3b), 3rd top (3c), 4th top (3d), 5th top (3e), first sliding bearing (4a), second sliding bearing (4b), 3rd sliding bearing (4c), 4th sliding bearing (4d), 5th sliding bearing (4e), first dynamic magnetic steel component (5a), second dynamic magnetic steel component (5b), 3rd dynamic magnetic steel component (5c), 4th dynamic magnetic steel component (5d), 5th dynamic magnetic steel component (5e), first cylinder (6a), second cylinder (6b), 3rd cylinder (6c), 4th cylinder (6d), 5th cylinder (6e), first determines magnetic steel component (7a), second determines magnetic steel component (7b), 3rd determines magnetic steel component (7c), 4th determines magnetic steel component (7d), 5th determines magnetic steel component (7e), first joint (8a), second joint (8b), 3rd joint (8c), 4th joint (8d) and the 5th joint (8e), radial vibration-reducing system comprises: rubber membrane (14) and damping fluid (15), shunting connector (1) is positioned at inserting tube (2) upper end, and be tightly connected by screw thread and upper inserting tube (2), first top (3a), first sliding bearing (4a), first dynamic magnetic steel component (5a), first cylinder (6a), first determines magnetic steel component (7a) and the first joint (8a) is all positioned at inserting tube (2) radially inner side, first top (3a) is positioned on the downside of the inner conical surface of inserting tube (2) upper end, and be in close contact with upper inserting tube (2) upper end inner conical surface, first middle part, top (3a) is positioned at the first sliding bearing (4a) radially inner side, and with the first sliding bearing (4a) matched in clearance, first (3a) lower end, top is positioned at the first dynamic magnetic steel component (5a) radially inner side, and be connected by screw thread magnetic steel component (5a) dynamic with first, first sliding bearing (4a) lower end is positioned at the first cylinder (6a) radially inner side, and be connected with the first cylinder (6a) by screw thread, first dynamic magnetic steel component (5a) is positioned at (3a) lower end, the first top and the first cylinder (6a) radially inner side, and with the first cylinder (6a) matched in clearance, first cylinder (6a) is positioned at the first sliding bearing (4a), first dynamic magnetic steel component (5a), first determines magnetic steel component (7a) and the first joint (8a) radial outside, first cylinder (6a) top and bottom are connected with the first sliding bearing (4a) and the first joint (8a) by screw thread respectively, magnetic steel component (7a) matched in clearance is determined with the first dynamic magnetic steel component (5a) and first in first cylinder (6a) middle part, first determines magnetic steel component (7a) is positioned at the first joint (8a) upper end, and be connected with the first joint (8a) by screw thread,Battery short section (9) is positioned at the first joint (8a) lower end and the second joint (8b) upper end, all it is connected with the first joint (8a) and the second joint (8b) by screw, second top (3b), second sliding bearing (4b), second dynamic magnetic steel component (5b), second cylinder (6b), second determines magnetic steel component (7b) and the second joint (8b) is all positioned at inserting tube (2) radially inner side, second top (3b) is positioned at connector (10) upper end, and be in close contact with connector (10) upper surface, second middle part, top (3b) is positioned at the second sliding bearing (4b) radially inner side, and with the second sliding bearing (4b) matched in clearance, second (3b) upper end, top is positioned at the second dynamic magnetic steel component (5b) radially inner side, and be connected by screw thread magnetic steel component (5b) dynamic with second, second sliding bearing (4b) upper end is positioned at the second cylinder (6b) radially inner side, and be connected with the second cylinder (6b) by screw thread, second dynamic magnetic steel component (5b) is positioned at (3b) upper end, the second top and the second cylinder (6b) radially inner side, and with the second cylinder (6b) matched in clearance, second cylinder (6b) is positioned at the second sliding bearing (4b), second dynamic magnetic steel component (5b), second determines magnetic steel component (7b) and the second joint (8b) radial outside, second cylinder (6b) top and bottom are connected with the second joint (8b) and the second sliding bearing (4b) by screw thread respectively, magnetic steel component (7b) matched in clearance is determined with the second dynamic magnetic steel component (5b) and second in second cylinder (6b) middle part, second determines magnetic steel component (7b) is positioned at the second joint (8b) lower end, and be connected with the second joint (8b) by screw thread, connector (10) is positioned at inserting tube (2) lower end and lower inserting tube (11) upper end, all it is tightly connected by screw thread and upper inserting tube (2) and lower inserting tube (11), 3rd top (3c), 3rd sliding bearing (4c), 3rd dynamic magnetic steel component (5c), 3rd cylinder (6c), 3rd determines magnetic steel component (7c) and the 3rd joint (8c) is all positioned at lower inserting tube (11) radially inner side, 3rd top (3c) is positioned on the downside of the inner conical surface of lower inserting tube (11) upper end, and be in close contact with lower inserting tube (11) upper end inner conical surface, 3rd middle part, top (3c) is positioned at the 3rd sliding bearing (4c) radially inner side, and with the 3rd sliding bearing (4c) matched in clearance, 3rd (3c) lower end, top is positioned at the 3rd dynamic magnetic steel component (5c) radially inner side, and be connected by screw thread magnetic steel component (5c) dynamic with the 3rd, 3rd sliding bearing (4c) lower end is positioned at the 3rd cylinder (6c) radially inner side, and be connected with the 3rd cylinder (6c) by screw thread, 3rd dynamic magnetic steel component (5c) is positioned at the 3rd (3c) lower end, top and the 3rd cylinder (6c) radially inner side, and with the 3rd cylinder (6c) matched in clearance, 3rd cylinder (6c) is positioned at the 3rd sliding bearing (4c), 3rd dynamic magnetic steel component (5c), 3rd determines magnetic steel component (7c) and the 3rd joint (8c) radial outside, 3rd cylinder (6c) top and bottom are connected with the 3rd sliding bearing (4c) and the 3rd joint (8c) by screw thread respectively,Magnetic steel component (7c) matched in clearance is determined with the 3rd dynamic magnetic steel component (5c) and the 3rd in 3rd cylinder (6c) middle part, 3rd determines magnetic steel component (7c) is positioned at the 3rd joint (8c) upper end, and be connected with the 3rd joint (8c) by screw thread, circuit pipe nipple (12) is positioned at the 3rd joint (8c) lower end and the 4th (3d) upper end, top, and be connected with the 3rd joint (8c) by screw, 4th top (3d), 4th sliding bearing (4d), 4th dynamic magnetic steel component (5d), 4th cylinder (6d), 4th determines magnetic steel component (7d) and the 4th joint (8d) is all positioned at lower inserting tube (11) radially inner side, 4th top (3d) is positioned at circuit pipe nipple (12) downside, and be in close contact with circuit pipe nipple (12) lower surface, 4th middle part, top (3d) is positioned at the 4th sliding bearing (4d) radially inner side, and with the 4th sliding bearing (4d) matched in clearance, 4th (3d) lower end, top is positioned at the 4th dynamic magnetic steel component (5d) radially inner side, and be connected by screw thread magnetic steel component (5d) dynamic with the 4th, 4th sliding bearing (4d) lower end is positioned at the 4th cylinder (6d) radially inner side, and be connected with the 4th cylinder (6d) by screw thread, 4th dynamic magnetic steel component (5d) is positioned at the 4th (3d) lower end, top and the 4th cylinder (6d) radially inner side, and with the 4th cylinder (6d) matched in clearance, 4th cylinder (6d) is positioned at the 4th sliding bearing (4d), 4th dynamic magnetic steel component (5d), 4th determines magnetic steel component (7d) and the 4th joint (8d) radial outside, 4th cylinder (6d) top and bottom are connected with the 4th sliding bearing (4d) and the 4th joint (8d) by screw thread respectively, magnetic steel component (7d) matched in clearance is determined with the 4th dynamic magnetic steel component (5d) and the 4th in 4th cylinder (6d) middle part, 4th determines magnetic steel component (7d) is positioned at the 4th joint (8d) upper end, and be connected with the 4th joint (8d) by screw thread, measure pipe nipple (13) and it is positioned at the 4th joint (8d) lower end and the 5th joint (8e) upper end, all it is connected with the 4th joint (8d) and the 5th joint (8e) by screw, rubber pattern (14) and damping fluid (15) are positioned at lower inserting tube (11) radially inner side and measure pipe nipple (13) radial outside, rubber pattern (14) is fixed by screws in be measured on pipe nipple (13) external cylindrical surface, it is inner that damping fluid (15) is sealed in rubber pattern (14), 5th top (3e), 5th sliding bearing (4e), 5th dynamic magnetic steel component (5e), 5th cylinder (6e), 5th determines magnetic steel component (7e) and the 5th joint (8e) is all positioned at lower inserting tube (11) radially inner side, 5th top (3e) is positioned at guide shoe (16) upper end, and be in close contact with guide shoe (16) upper surface, 5th middle part, top (3e) is positioned at the 5th sliding bearing (4e) radially inner side, and with the 5th sliding bearing (4e) matched in clearance, 5th (3e) upper end, top is positioned at the 5th dynamic magnetic steel component (5e) radially inner side, and be connected by screw thread magnetic steel component (5e) dynamic with the 5th, 5th sliding bearing (4e) upper end is positioned at the 5th cylinder (6e) radially inner side,And be connected with the 5th cylinder (6e) by screw thread, 5th dynamic magnetic steel component (5e) is positioned at the 5th (3e) upper end, top and the 5th cylinder (6e) radially inner side, and with the 5th cylinder (6e) matched in clearance, 5th cylinder (6e) is positioned at the 5th sliding bearing (4e), 5th dynamic magnetic steel component (5e), 5th determines magnetic steel component (7e) and the 5th joint (8e) radial outside, 5th cylinder (6e) top and bottom are connected with the 5th joint (8e) and the 5th sliding bearing (4e) by screw thread respectively, magnetic steel component (7e) matched in clearance is determined with the 5th dynamic magnetic steel component (5e) and the 5th in 5th cylinder (6e) middle part, 5th determines magnetic steel component (7e) is positioned at the 5th joint (8e) lower end, and be connected with the 5th joint (8e) by screw thread, guide shoe (16) is positioned at lower inserting tube (11) lower end, and be tightly connected by screw thread and lower inserting tube (11), first top (3a), first sliding bearing (4a), first dynamic magnetic steel component (5a), first cylinder (6a), first determines magnetic steel component (7a) and the first joint (8a) forms the first magnetic force shock-absorber, the second top (3b), second sliding bearing (4b), second dynamic magnetic steel component (5b), second cylinder (6b), second determines magnetic steel component (7b) and the second joint (8b) forms the second magnetic force shock-absorber, the 3rd top (3c), 3rd sliding bearing (4c), 3rd dynamic magnetic steel component (5c), 3rd cylinder (6c), 3rd determines magnetic steel component (7c) and the 3rd joint (8c) forms the 3rd magnetic force shock-absorber, the 4th top (3d), 4th sliding bearing (4d), 4th dynamic magnetic steel component (5d), 4th cylinder (6d), 4th determines magnetic steel component (7d) and the 4th joint (8d) forms the 4th magnetic force shock-absorber, the 5th top (3e), 5th sliding bearing (4e), 5th dynamic magnetic steel component (5e), 5th cylinder (6e), 5th determines magnetic steel component (7e) and the 5th joint (8e) forms the 5th magnetic force shock-absorber.
2. the passive magnetic combination vibration absorber of directional tool according to claim 1, is characterized in that: described upper inserting tube (2), the first cylindrical shell (6a), the second cylindrical shell (6b), the 3rd cylindrical shell (6c), the 4th cylindrical shell (6d), the 5th cylindrical shell (6e), the first joint (8a), the second joint (8b), the 3rd joint (8c), the 4th joint (8d), the 5th joint (8e), lower inserting tube (11) are superduralumin 7075 material.
3. the passive magnetic combination vibration absorber of directional tool according to claim 1, is characterized in that: described connector (10) is beryllium-bronze QBe2.
4. the passive magnetic combination vibration absorber of directional tool according to claim 1, is characterized in that: the bearing shell of described the first sliding bearing (4a), the second sliding bearing (4b), the 3rd sliding bearing (4c), the 4th sliding bearing (4d) and the 5th sliding bearing (4e) is macromolecular material G-92.
5. the passive magnetic combination vibration absorber of directional tool according to claim 1, is characterized in that: the described first dynamic magnetic steel component (5a), second dynamic magnetic steel component (5b), 3rd dynamic magnetic steel component (5c), 4th dynamic magnetic steel component (5d), 5th dynamic magnetic steel component (5e), first determines magnetic steel component (7a), second determines magnetic steel component (7b), 3rd determines magnetic steel component (7c), 4th determines magnetic steel component (7d), 5th determines the annular magnetic steel that magnetic steel component (7e) respectively comprises the arrangement of five Halbach structure, the first dynamic magnetic steel component (5a), second dynamic magnetic steel component (5b), 3rd dynamic magnetic steel component (5c), 4th dynamic magnetic steel component (5d), five annular magnetic steel magnetizing directions of the 5th dynamic magnetic steel component (5e) are followed successively by from inside to outside: axially upwards, radially-inwardly, axially downwards, radially outward with axially upwards, first determines magnetic steel component (7a), second determines magnetic steel component (7b), 3rd determines magnetic steel component (7c), 4th determines magnetic steel component (7d), 5th five the annular magnetic steel magnetizing directions determining magnetic steel component (7e) are followed successively by from inside to outside: axially downwards, radially-inwardly, axially upwards, radially outward with axially downwards, annular magnetic steel is samarium cobalt permanent magnet alloy Y X30.
6. the passive magnetic combination vibration absorber of directional tool according to claim 1, is characterized in that: described rubber pattern (14) is FFKM fluorubber material, the about 1mm of rubber membrane thickness.
7. the passive magnetic combination vibration absorber of directional tool according to claim 1, is characterized in that: described damping fluid (15) is dimethicone.
8. the passive magnetic combination vibration absorber of directional tool according to claim 5, it is characterized in that: when device in the raw time, described first dynamic magnetic steel component (5a) and first determines magnetic steel component (7a), the second dynamic magnetic steel component (5b) and second determines magnetic steel component (7b), the 3rd dynamic magnetic steel component (5c) and the 3rd determines magnetic steel component (7c), the 4th dynamic magnetic steel component (5d) and the 4th determines magnetic steel component (7d), the 5th dynamic magnetic steel component (5e) and the 5th is determined magnetic steel component (7e) and all be there is certain yoke distance, and size is about 1 ~ 3mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420584707.7U CN204419161U (en) | 2014-10-11 | 2014-10-11 | The passive magnetic combination vibration absorber of directional tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420584707.7U CN204419161U (en) | 2014-10-11 | 2014-10-11 | The passive magnetic combination vibration absorber of directional tool |
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| CN204419161U true CN204419161U (en) | 2015-06-24 |
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| CN201420584707.7U Withdrawn - After Issue CN204419161U (en) | 2014-10-11 | 2014-10-11 | The passive magnetic combination vibration absorber of directional tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675384A (en) * | 2014-10-11 | 2015-06-03 | 北京石油化工学院 | Passive magnetism combined damping device for drilling inclinometer |
-
2014
- 2014-10-11 CN CN201420584707.7U patent/CN204419161U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675384A (en) * | 2014-10-11 | 2015-06-03 | 北京石油化工学院 | Passive magnetism combined damping device for drilling inclinometer |
| CN104675384B (en) * | 2014-10-11 | 2018-07-06 | 北京石油化工学院 | The passive magnetic combination vibration absorber of directional tool |
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Granted publication date: 20150624 Effective date of abandoning: 20180706 |