CN204327078U - A kind of mud pulse generator brshless DC motor transmission mechanism - Google Patents
A kind of mud pulse generator brshless DC motor transmission mechanism Download PDFInfo
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- CN204327078U CN204327078U CN201420698031.4U CN201420698031U CN204327078U CN 204327078 U CN204327078 U CN 204327078U CN 201420698031 U CN201420698031 U CN 201420698031U CN 204327078 U CN204327078 U CN 204327078U
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Abstract
The utility model announces a kind of mud pulse generator brshless DC motor transmission mechanism, is made up of brshless DC motor and control system, flexible clutch, ball-screw, main shaft and stopping means.DC brushless motor and control system are made up of Drive Module, brshless DC motor and reducer; Yielding coupling is made up of fastening shaft member housing and elastic body; Ball-screw is made up of ball nut and screw mandrel; Ball-screw changes the rotation of motor into rectilinear motion, the linear movement direction of main shaft is provided with stopping means in position, after arriving stopping means, brshless DC motor stall, electric current raises, driver judges main spindle's according to the electric current detected, controls direction of motor rotation, thus realizes the pilot control of paired pulses device main valve.The utility model structure is simple, reliable operation, saves electricity, is applicable to wireless drilling measuring system, solves the problem that mud pulse generator fault rate is high and control is complicated.
Description
Technical field
The utility model belongs to petroleum drilling engineering field, particularly a kind of brshless DC motor transmission mechanism for mud pulse generator.
Background technology
In Process of Oil Well Drilling, in the drilling process of the especially complex structural well such as horizontal well, extended reach well and Multilateral Wells, well site personnel need the various downhole parameters understood in real time to be completed by measurement while drilling MWD, well logging during LWD system.
The information transferring method of measurement while drilling mainly contains four kinds: wire cable method, mud-pulse method, sonic method and Electromagnetic Wave Method, and often kind of mode has its limitation and the scope of application, is wherein most widely used with mud-pulse method, reliably.Mud-pulse method is divided into again negative pulse, positive pulse and continuous wave three kinds of transmission means, current most widely used positive pulse transmission means.
Wherein, the reciprocating signal generator of hydraulic-driven being with pilot control is the form that mud positive pulse transmission means is the most general.It drives primary throttle valve to move back and forth by hydraulic control circuit and produces pressure pulse signal, and the medium of hydraulic control circuit can be drilling fluid also can be hydraulic oil.The hydraulic control circuit with drilling fluid being wherein the reciprocal throttle type signal generator of medium is relatively simple for structure, but because drilling fluid also exists the problem that damage ratio is comparatively serious, flowing has non-newtonian feature and its character changes with the change of drilling condition, cause its operating frequency very low, discrete pressure pulse signal can only be produced; Be that the reciprocal throttle type signal generator of medium needs setting up a set of hydraulic power system with hydraulic oil, structure is very complicated, and due to narrow space, bad environments limits the application of high performance hydraulic element.
Utility model content
The purpose of this utility model is to provide a kind of mud pulse generator brshless DC motor transmission mechanism, for driving pilot valve action in wireless drilling measuring system.When system needs to produce pulse signal, brshless DC motor transmission mechanism drives pilot valve action, and then control bound action, produces mud positive pulse signal.
The utility model employing technical scheme is: a kind of mud pulse generator brshless DC motor transmission mechanism, comprise brshless DC motor and control system, flexible clutch, ball-screw, main shaft and stopping means, DC brushless motor and control system are at top, flexible clutch, ball-screw, main shaft connect successively, and stopping means is installed on bottom; DC brushless motor and control system are made up of Drive Module, brshless DC motor and reducer; Flexible clutch is made up of fastening shaft member housing and elastic body; Ball-screw is made up of ball nut and screw mandrel.
Brshless DC motor, reducer, flexible clutch, ball-screw are dipped in hydraulic oil, and main shaft portion is immersed in hydraulic pressure, and another part is immersed in mud.
Ball-screw is connected with brshless DC motor rotating shaft, changes rectilinear motion into, and main the tip of the axis is provided with stopping means.
Together with main shaft is welded in ball nut.
Compared with prior art, the utility model has the advantages that: brshless DC motor, because of its brushless characteristic, is immersed in hydraulic oil completely, both can not destroy the explosion-resistance characteristic of instrument, can meet again the requirement of pressure balanced inside and outside instrument.Brshless DC motor rotates, and converting rotary motion is rectilinear motion by ball-screw.Ball-screw-transmission efficiency is high, then adds it and be immersed in completely in hydraulic oil, and mechanical wear is less, under its rational application life, can realize non-maintaining.Flexible clutch can buffer motor acceleration and deceleration produce moment large torque, protect follow-up drive disk assembly and brshless DC motor self.The linear movement direction of main shaft is provided with stopping means in position, after arriving stopping means, and brshless DC motor stall, electric current raises, driver judges main spindle's according to the electric current detected, controls direction of motor rotation, thus realizes the pilot control of paired pulses device main valve.The utility model structure is simple, reliable operation, saves electricity, is applicable to wireless drilling measuring system, solves the problem that mud pulse generator fault rate is high and control is complicated.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1 is stopping means, 2 be main shaft, 3 be screw mandrel, 4 be ball nut, 5 be flexible clutch, 6 be reducer, 7 for brshless DC motor.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of mud pulse generator brshless DC motor transmission mechanism, comprise brshless DC motor 7 and control system, flexible clutch 5, ball-screw, main shaft 2 and stopping means 1, DC brushless motor 7 and control system are at top, flexible clutch 5, ball-screw, main shaft 2 connect successively, and stopping means 1 is installed on bottom; DC brushless motor 7 and control system are made up of Drive Module, brshless DC motor 7 and reducer 6; Flexible clutch 5 is made up of fastening shaft member housing and elastic body; Ball-screw is made up of ball nut 4 and screw mandrel 3.Whole mechanism, when underground work, is installed in resistance to compression urceolus, and the mud pressure of resistance to compression urceolus outside, under the effect of corresponding bascule, is consistent with the hydraulic fluid pressure of inside.
Brshless DC motor 7, reducer 6, flexible clutch 5, ball-screw are dipped in hydraulic oil, and main shaft 2 is partially submerged in hydraulic pressure, and another part is immersed in mud.
Ball-screw is connected with brshless DC motor 7 rotating shaft, changes rectilinear motion into, and the end of main shaft 2 is provided with stopping means 1.
Together with main shaft 2 is welded in ball nut 4.Pressure suffered by their two ends is basically identical, and the driving force therefore suffered by main shaft 2 all derives from the axial force of ball-screw.
When pilot valve needs action, Drive Module controls brshless DC motor 7 and rotates forward, drive screw mandrel 3 to rotate forward by flexible clutch 5, and then drive ball nut 4 toward moving right, after a mobile segment distance, leading screw 3 end face and main shaft 2 end contact, brshless DC motor 7 stall, electric current raises, after Drive Module detects that electric current raises, control brshless DC motor 7 to stop operating, and next step rotation direction of brshless DC motor 7 is adjusted to reversion.After this state keeps a period of time, Drive Module controls brshless DC motor 7 and reverses, screw mandrel 3 is driven to reverse by flexible clutch 5, and then drive ball nut 4 toward moving left shown in Fig. 1, after a mobile segment distance, main shaft 2 end face contacts with stopping means 1, brshless DC motor 7 stall, electric current raises, after Drive Module detects that electric current raises, control brshless DC motor 7 and stop operating, and next step rotation direction of brshless DC motor 7 is adjusted to rotating forward, keep a period of time, complete the one-off of pilot valve.
During the utility model application, other modules of same wireless drilling measuring system are needed to work together.Generation mud pressure fluctuates, and ground system is decoded according to the pressure oscillation detected, obtains measurement while drilling, log data.
Claims (4)
1. a mud pulse generator brshless DC motor transmission mechanism, comprise brshless DC motor and control system, flexible clutch, ball-screw, main shaft and stopping means, it is characterized in that: DC brushless motor and control system are at top, flexible clutch, ball-screw, main shaft connect successively, and stopping means is installed on bottom; DC brushless motor and control system are made up of Drive Module, brshless DC motor and reducer; Flexible clutch is made up of fastening shaft member housing and elastic body; Ball-screw is made up of ball nut and screw mandrel.
2. a kind of mud pulse generator brshless DC motor transmission mechanism according to claim 1, it is characterized in that: brshless DC motor, reducer, flexible clutch, ball-screw are dipped in hydraulic oil, main shaft portion is immersed in hydraulic pressure, and another part is immersed in mud.
3. a kind of mud pulse generator brshless DC motor transmission mechanism according to claim 1, it is characterized in that: ball-screw is connected with brshless DC motor rotating shaft, change rectilinear motion into, main the tip of the axis is provided with stopping means.
4. a kind of mud pulse generator brshless DC motor transmission mechanism according to claim 1, is characterized in that: together with main shaft is welded in ball nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420698031.4U CN204327078U (en) | 2014-11-20 | 2014-11-20 | A kind of mud pulse generator brshless DC motor transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420698031.4U CN204327078U (en) | 2014-11-20 | 2014-11-20 | A kind of mud pulse generator brshless DC motor transmission mechanism |
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| CN204327078U true CN204327078U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420698031.4U Active CN204327078U (en) | 2014-11-20 | 2014-11-20 | A kind of mud pulse generator brshless DC motor transmission mechanism |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106236497A (en) * | 2016-09-06 | 2016-12-21 | 上海荣泰健康科技股份有限公司 | A kind of arm and the adjustable massage armchair of shoulder position width |
| CN106499785A (en) * | 2016-10-28 | 2017-03-15 | 成都福誉科技有限公司 | A kind of high accuracy straight line module and its control method |
| CN106593421A (en) * | 2016-12-15 | 2017-04-26 | 中国科学院地质与地球物理研究所 | High temperature resistance underground information uploading device |
| CN112593929A (en) * | 2020-12-16 | 2021-04-02 | 成都多贝石油工程技术有限公司 | Motor type mud pulse generator |
-
2014
- 2014-11-20 CN CN201420698031.4U patent/CN204327078U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106236497A (en) * | 2016-09-06 | 2016-12-21 | 上海荣泰健康科技股份有限公司 | A kind of arm and the adjustable massage armchair of shoulder position width |
| CN106499785A (en) * | 2016-10-28 | 2017-03-15 | 成都福誉科技有限公司 | A kind of high accuracy straight line module and its control method |
| CN106593421A (en) * | 2016-12-15 | 2017-04-26 | 中国科学院地质与地球物理研究所 | High temperature resistance underground information uploading device |
| CN112593929A (en) * | 2020-12-16 | 2021-04-02 | 成都多贝石油工程技术有限公司 | Motor type mud pulse generator |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Dengzhou road 257091 in Shandong province Dongying City Dongcheng Development Zone No. 62 Patentee after: Schlumberger Oilfield Technology (Shandong) Co. Ltd. Address before: Dengzhou road 257091 in Shandong province Dongying City Dongcheng Development Zone No. 62 Patentee before: Schlumberger JHP Oilfield Technologies (Shandong) Co., Ltd. |