High-temperature turbine generator for measurement and control instrument

Abstract

The high-temperature turbine generator comprises a shell in threaded connection with the measurement and control instrument while drilling, one end of the shell is connected with a stator, a generator rotating shaft is rotatably arranged in the shell, one end of the generator rotating shaft is sleeved with an inner magnetic coupling cylinder, a rotor is rotatably arranged outside the stator, and the rotor is sleeved with an outer magnetic coupling cylinder. A turbine blade is arranged on the outer side of the rotor, an outer magnetic coupling barrel is embedded in the rotor and corresponds to the inner magnetic coupling barrel in position, the other end of the generator rotating shaft is sleeved with a barrel type power generation magnetic field, and a barrel type power generation coil is arranged on the inner side of the shell and corresponds to the barrel type power generation magnetic field in position. The utility model relates to the technical field of petroleum drilling and well logging while drilling, adopts sealed permanent magnet excitation, performs power generation by washing turbine blades through slurry, and has the advantages of compact structure, small size, capability of lengthening a barrel type power generation coil in an axial space to meet different power requirements, good adaptability and high reliability. The power supply device is especially suitable for power supply of the logging-while-drilling instrument for deep wells and small-size holes.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oil drilling and logging while drilling, in particular to a high-temperature turbine generator for a measuring and controlling instrument. BACKGROUND

[0002] The logging instrument is placed on the drill bit, the drill bit is provided with "eyes", various data of the formation are obtained while drilling, which is logging while drilling. In this way, logging can be carried out on any condition well, especially horizontal well, and the drill bit trajectory is adjusted in time according to the measured drilling parameters and formation parameters, so that the drill bit drills in the direction of the target layer. In the prior art, the logging while drilling instrument is mostly powered by a battery, but there is a problem of battery capacity. When the battery capacity is insufficient, the well needs to be raised to replace the battery, which is too expensive. In view of the above technical problems, the mud turbine generator for the logging while drilling instrument is developed, and the application number is 202110792467.4. However, with the continuous upgrading of drilling technology, the downhole operation conditions will change significantly, especially the deeper the well is, the smaller the borehole is, the higher the operation temperature and pressure are. The existing mud turbine generator cannot meet the operation needs. In view of this, the above problems are studied in depth, and the case is generated. CONTENT OF THE UTILITY MODEL

[0003] In view of the deficiencies of the prior art, the utility model provides a high-temperature turbine generator for a measuring and controlling instrument, which solves the problems proposed in the background art.

[0004] To achieve the above purpose, the utility model realizes the following technical scheme: a high-temperature turbine generator for a measuring and controlling instrument, comprising a shell threadedly connected with a logging while drilling and measuring and controlling instrument, one end of the shell is connected with a stator, a generator rotating shaft is rotationally arranged in the shell, one end of the generator rotating shaft is sleeved with an inner magnetic coupling cylinder, a rotor is rotationally arranged outside the stator, turbine blades are arranged on the outer side of the rotor, an outer magnetic coupling cylinder is embedded in the rotor, the outer magnetic coupling cylinder corresponds to the position of the inner magnetic coupling cylinder, a cylindrical generator magnetic field is sleeved on the other end of the generator rotating shaft, and a cylindrical generator coil is arranged on the inner side of the shell corresponding to the position of the cylindrical generator magnetic field.

[0005] The rotor and the stator are rotationally matched through the mud lubricated hard alloy bearing pair.

[0006] One end of the stator is provided with a fairing, and a rectifier circuit bin is integrated in the fairing.

[0007] A guide wheel is fixedly arranged on the outer side of the stator, and the guide wheel is located between the fairing and the turbine blades.

[0008] A voltage output port is arranged at one end of the shell close to the cylindrical generator coil.

[0009] A plurality of heat dissipation grooves are formed on the outer wall of the shell corresponding to the position of the cylindrical generator coil along the length direction of the shell. Advantages

[0010] The utility model provides a high temperature turbine generator for measuring and controlling instrument. Have following advantages: this high temperature turbine generator for measuring and controlling instrument, with the cooperation of the logging while drilling instrument, utilize mud as the driving force of generator, take local materials, adopt sealed permanent magnet excitation, drive rotor and outer magnetic coupling cylinder rotation through mud scouring turbine paddle, the outer magnetic coupling cylinder rotation makes the generator rotating shaft synchronous rotation under the action of magnetic force, so that the tubular power generation magnetic field on the other end of generator rotating shaft carries out magnetic force cutting to the tubular power generation coil, produces induced current, realizes continuous power supply, radial magnetic disk, radial generator coil guarantees the brushless output of electricity, safe and reliable, the compact structure of generator, small, tubular power generation coil can be lengthened in axial space to satisfy different power demand, good adaptability, especially suitable for deep well and small size borehole logging while drilling instrument power supply. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is main view structural schematic diagram for the high temperature turbine generator for measuring and controlling instrument of the utility model.

[0012] Figure 2 It is the utility model Figure 1 Partial enlarged structural schematic diagram.

[0013] In the drawing: 1, shell, 2, stator, 3, generator rotating shaft, 4, inner magnetic coupling cylinder, 5, rotor, 6, turbine paddle, 7, outer magnetic coupling cylinder, 8, tubular power generation magnetic field, 9, tubular power generation coil, 10, mud lubricated hard alloy bearing pair, 11, fairing, 12, rectifier circuit bin, 13, guide wheel, 14, voltage output, 15, heat dissipation groove. DETAILED DESCRIPTION

[0014] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0015] Embodiment: combine the drawings of the specification Figures 1-2It can be known that the application specifically designs a high-temperature turbine generator for a measurement and control instrument, which comprises a shell 1 threadedly connected with a measurement and control instrument while drilling, one end of the shell 1 is connected with a stator 2, a generator rotating shaft 3 is rotationally arranged in the shell 1, an inner magnetic coupling cylinder 4 is sleeved on one end of the generator rotating shaft 3, a rotor 5 is rotationally arranged outside the stator 2, turbine blades 6 are arranged outside the rotor 5, an outer magnetic coupling cylinder 7 is embedded in the rotor 5, the outer magnetic coupling cylinder 7 corresponds to the position of the inner magnetic coupling cylinder 4, a cylindrical generator magnetic field 8 is sleeved on the other end of the generator rotating shaft 3, and a cylindrical generator coil 9 is arranged on the inner side of the shell 1 and corresponds to the position of the cylindrical generator magnetic field 8. The measurement and control instrument while drilling is used in cooperation, mud is used as the driving force of the generator, local materials are used, sealed permanent magnet excitation is adopted, the turbine blades 6 are washed by mud to drive the rotor 5 and the outer magnetic coupling cylinder 7 to rotate, the outer magnetic coupling cylinder 7 rotates under the action of magnetic force to synchronously drive the generator rotating shaft 3 to rotate, so that the cylindrical generator magnetic field 8 on the other end of the generator rotating shaft 3 cuts the cylindrical generator coil 9 by magnetic force to generate induced current, realize continuous power supply, the radial magnetic disk and the radial generator coil ensure brushless output of electricity, and safety and reliability are achieved. The structure of the generator is compact and small in size, the cylindrical generator coil 9 can be lengthened in the axial space to meet different power requirements, good adaptability is achieved, and the generator is especially suitable for power supply of the measurement and control instrument while drilling in deep wells and small-size boreholes, can be applied to 4-inch to 8-inch boreholes, can resist high temperature of 200 degrees Celsius, and can withstand high pressure of 175 Mpa.

[0016] In the specific implementation process, as a preferred arrangement, the rotor 5 and the stator 2 are rotationally matched through a mud-lubricated hard alloy bearing pair 10, mud can play a good lubricating effect and can cool the rotating position.

[0017] In the specific implementation process, as a preferred arrangement, one end of the stator 2 is provided with a fairing 11, and a rectifier circuit bin 12 is integrated in the fairing 11; a guide wheel 13 is fixedly arranged outside the stator 2, and the guide wheel 13 is located between the fairing 11 and the turbine blades 6. The guide wheel 13 can change the impact angle of mud and increase the conversion efficiency.

[0018] In the specific implementation process, as a preferred arrangement, a voltage output port 14 is arranged at one end of the shell 1 close to the cylindrical generator coil 9, so that the power supply lead and the measurement and control instrument can be connected.

[0019] In the specific implementation process, as a preferred arrangement, a plurality of heat dissipation grooves 15 are formed on the outer wall of the shell 1 and correspond to the positions of the cylindrical generator coil 9 along the length direction of the shell 1, so that the heat dissipation area is increased and the heat dissipation performance of the generator is further improved.

[0020] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0021] While embodiments of the present application have been shown and described with reference to the figures, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the spirit and scope of the present application, which should be limited only by the scope of the appended claims and the equivalents thereof.

Claims

1. A high-temperature turbine generator for a measurement and control instrument, characterized in that, The device includes a housing threadedly connected to a drilling measurement and control instrument. One end of the housing is connected to a stator. A generator shaft is rotatably mounted inside the housing. An inner magnetic coupling cylinder is fitted onto one end of the generator shaft. A rotor is rotatably mounted outside the stator. Turbine blades are mounted on the outer side of the rotor. An outer magnetic coupling cylinder is embedded inside the rotor, with the outer magnetic coupling cylinder corresponding to the position of the inner magnetic coupling cylinder. A cylindrical generating magnetic field is fitted onto the other end of the generator shaft. A cylindrical generating coil is mounted on the inner side of the housing corresponding to the position of the cylindrical generating magnetic field.

2. The high-temperature turbine generator for the measurement and control instrument according to claim 1, characterized in that, The rotor and stator are rotated together by a cemented carbide bearing pair lubricated by mud.

3. The high-temperature turbine generator for the measurement and control instrument according to claim 1, characterized in that, A flow guide shroud is provided at one end of the stator, and a rectifier circuit compartment is integrated inside the flow guide shroud.

4. The high-temperature turbine generator for the measurement and control instrument according to claim 1, characterized in that, A guide wheel is fixed to the outside of the stator, and the guide wheel is located between the fairing and the turbine blade.

5. The high-temperature turbine generator for the measurement and control instrument according to claim 1, characterized in that, The housing has a voltage output port near the end of the cylindrical generator coil.

6. The high-temperature turbine generator for the measurement and control instrument according to claim 1, characterized in that, Several heat dissipation grooves are formed on the outer wall of the housing along the length of the housing, corresponding to the position of the cylindrical generator coil.

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