A kind of hold angle helicoid hydraulic motor for extended reach directional wellTechnical field
The utility model is related to a kind of drilling tool, specially a kind of hold angle helicoid hydraulic motors for extended reach directional well.
Background technology
Helicoid hydraulic motor is one kind using drilling fluid as power, liquid pressure energy is switched to the positive displacement well dynamic of mechanical energyDrilling tool.Enter motor when the mud that slush pump pumps out flows through by-passing valve, forms certain pressure difference in the import and export of motor, push awayTurn is rotated around the axis of stator, and rotating speed and torque are passed to drill bit by universal shaft and transmission shaft, is bored to realizeWell operations, but the drill bit installation of drilling tool now is typically all directly to be fixedly connected using screw thread engagement, using this installationMode is susceptible to the phenomenon that drill bit is fallen, and influences the normal development of duration.
Therefore, it is necessary to design a kind of solving problems for the hold angle helicoid hydraulic motor of extended reach directional well.
Utility model content
It is above-mentioned to solve the purpose of this utility model is to provide a kind of hold angle helicoid hydraulic motor for extended reach directional wellThe problem of being proposed in background technology.
To achieve the above object, the utility model provides the following technical solutions：A kind of hold angle for extended reach directional wellHelicoid hydraulic motor, including spool, valve body, anti-lost assembly, motor assembly, stator, universal axle assembly, inlet, drill body, liquid outlet,Anti-lost nut, anti-lost screw rod, rotor, central shaft, driving-shaft assembly, output shaft, nut, circular hole, screw thread, plug, tooth head and pressurePlate, the drill body are made of valve body, anti-lost assembly, motor assembly, universal axle assembly and driving-shaft assembly, and the level of drill body is cutFace shape is circle, and the drill body is set gradually from top to bottom as valve body, anti-lost assembly, motor assembly, universal axle assembly and biographyMoving axis assembly, and valve body is made of spool, inlet and liquid outlet, the inlet is arranged in the upper end of spool, and liquid outletIt is arranged in the left and right sides of spool, the anti-lost assembly is internally provided with anti-lost nut and anti-lost screw rod, and anti-lost nut is pacifiedMounted in the upper end of anti-lost screw rod, the bottom end of the anti-lost screw rod is connect with being welded and fixed for rotor upper end, and rotor is arranged in horseUp to the inside of assembly, it is provided with stator on the wall body of the motor assembly, and is provided with certain gap between stator and rotor,The bottom end of the rotor is fixedly connected by universal joint with the upper end of central shaft, and central shaft is arranged in universal axle assemblyPortion, the bottom end of the central shaft are fixedly connected with the upper end of output shaft, and output shaft is arranged in the inside of driving-shaft assembly, describedThe centre position of output shaft end is provided with circular hole, and the end on the outside of output shaft is provided with plug, the nut and output shaftOuter end connected by screw thread engagement rotation, and be threaded on the outer end of output shaft, the output the tip of the axis is provided with pressurePlate, and head with teeth is set on the inner wall of pressing plate.
Further, the valve body is arranged in the top of drill body, and the lowermost end in drill body is arranged in driving-shaft assembly.
Further, the rotor is arranged between anti-lost screw rod and central shaft.
Further, the horizontal cross sectional geometry of the anti-lost nut and anti-lost screw rod is rectangle, and anti-lost nut is cutFace diameter is more than the diameter of section of anti-lost screw rod.
Further, the pressing plate of the output shaft bottom end setting is symmetrical about output axis of spindle.
Further, the diameter of the circular hole is slightly larger than the diameter of drill bit.
Compared with prior art, the utility model has the beneficial effects that：Output the tip of the axis be provided with pressing plate, nut andDrill bit can be arranged in circular hole and be fastened again with nut, greatly facilitate device more bit change, and in pressing plate by circular holeTooth head is set on inner wall and increases the friction with drilling rod, opposite to be directly connected to using nut, the present apparatus has higher fastnessCan, it also prevents occurring the phenomenon that drill bit is fallen in the process of work, reduces the probability of damage of device, be conducive to improve workProcess has higher practical performance.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the structural schematic diagram of the utility model output shaft bottom end；
Fig. 3 is the structural schematic diagram of the anti-lost assembly of the utility model；
In reference numeral：1, spool；2, valve body；3, anti-lost assembly；4, motor assembly；5, stator；6, universal axle assembly；7、Inlet；8, drill body；9, liquid outlet；10, anti-lost nut；11, anti-lost screw rod；12, rotor；13, central shaft；14, transmission shaft is totalAt；15, output shaft；16, nut；17, circular hole；18, screw thread；19, plug；20, tooth head；21, pressing plate.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility modelClearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than wholeEmbodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative workThe every other embodiment obtained, shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, the utility model provides a kind of technical solution：A kind of hold angle screw rod for extended reach directional wellDrilling tool, including spool 1, valve body 2, anti-lost assembly 3, motor assembly 4, stator 5, universal axle assembly 6, inlet 7, drill body 8, go out liquidMouth 9, anti-lost nut 10, anti-lost screw rod 11, rotor 12, central shaft 13, driving-shaft assembly 14, output shaft 15, nut 16, circular hole17, screw thread 18, plug 19, tooth head 20 and pressing plate 21, drill body 8 is by valve body 2, anti-lost assembly 3, motor assembly 4, universal axle assembly 6It is constituted with driving-shaft assembly 14, and the horizontal cross sectional geometry of drill body is circle, drill body 8 sets gradually from top to bottom as valve body 2, preventsFall assembly 3, motor assembly 4, universal axle assembly 6 and driving-shaft assembly 14, and valve body 2 is by 9 groups of spool 1, inlet 7 and liquid outletAt inlet 7 is arranged in the upper end of spool 1, and liquid outlet 9 is arranged in the left and right sides of spool 1, and the inside of anti-lost assembly 3 is setIt is equipped with anti-lost nut 10 and anti-lost screw rod 11, and anti-lost nut 10 is mounted on the upper end of anti-lost screw rod 11, the bottom of anti-lost screw rod 11End is connect with being welded and fixed for 12 upper end of rotor, and rotor 12 is arranged on the inside of motor assembly 4, the wall body of motor assembly 4It is provided with stator 5, and is provided with certain gap between stator 5 and rotor 12, the bottom end of rotor 12 passes through universal joint and centerThe upper end of axis 13 is fixedly connected, and central shaft 13 is arranged in the inside of universal axle assembly 6, bottom end and the output shaft 15 of central shaft 13Upper end be fixedly connected, and output shaft 15 is arranged in the inside of driving-shaft assembly 14, and the centre position of 15 end of output shaft is arrangedThere is circular hole 17, and the end in 15 outside of output shaft is provided with plug 19, nut 16 and the outer end of output shaft 15 are nibbled by screw thread 18Rotation connection to be closed, and is threaded 18 on the outer end of output shaft 15, the end of output shaft 15 is provided with pressing plate 21, and pressing plate 21Head 20 with teeth is set on inner wall.
Further, valve body 2 is arranged in the top of drill body 8, and the lowermost end in drill body 8 is arranged in driving-shaft assembly 14.
Further, rotor 12 is arranged between anti-lost screw rod 11 and central shaft 13.
Further, the horizontal cross sectional geometry of anti-lost nut 10 and anti-lost screw rod 11 is rectangle, and anti-lost nut 10Diameter of section is more than the diameter of section of anti-lost screw rod 11, realizes anti-lost function.
Further, the pressing plate 21 of 15 bottom end of output shaft setting is symmetrical about the center line of output shaft 15 so that stress is moreIt is uniform.
Further, the diameter of circular hole 17 is slightly larger than the diameter of drill bit, easy for installation.
Operation principle：Spool 1 slides in the body 2 under pressure, and the movement of spool 1 changes the flow direction of liquid,So that liquid outlet 9 has bypass and closes two states：Rise, tripping operation during, the through-hole patent of valve pocket and valve body 2 and,Liquid outlet 9 is in bypass state, and mud in drill string is made to enter annular space around motor；When mud flow rate and pressure reach standard settingWhen value, spool moves down, and closes liquid outlet 9, and mud flows through motor assembly 4 at this time, and pressure energy at mechanical energy, universal shaft is totalTorque and rotating speed that motor generates are passed into driving-shaft assembly 14 at 6, drill bit rotation is finally driven, realizes drilling well, exportingThe end of axis 15 is provided with pressing plate 21, nut 16 and circular hole 17, and drill bit can be arranged in circular hole 17 and carried out tightly with nut 16 againGu greatly facilitating device more bit change, and setting tooth head 20 increases the friction with drilling rod on the inner wall of pressing plate 21.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiiedChange, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.