An underground power generation device and power generation method
A technology for power generation devices and generator sets, which is applied in earthwork drilling, engine components, boreholes/well components, etc., which can solve problems affecting service life and achieve the effect of prolonging service life
Active Publication Date: 2022-02-15
YANGTZE UNIVERSITY
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Impurities in the drilling fluid will wash away the blades of the turbine during the process of the drilling fluid impacting the turbine, affecting its service life, so it is necessary to improve it
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] The downhole power generation device consists of an upper casing 1, a lower casing 22, a screw rotor 2, a screw stator 4, an inner motor, a bypass valve, a main shaft 3 and a generator set. The upper casing 1 is fixed with a screw stator 4, and the screw The screw rotor 2 is movably inserted in the stator 4, and the screw rotor 2 is a multi-head screw, so that when the drilling fluid flows between the screw rotor 2 and the screw stator 4, and the drilling fluid cooperates with the screw stator 4 to drive the screw rotor 2 to rotate, the screw rotor The rotation of 2 has the characteristics of low speed and high torque, which is convenient to drive the drill bit to rotate, so as to perform drilling operations. At the same time, compared with directly impacting the surface of the turbine, when the drilling fluid flows through the screw rotor 2, the impact on the screw rotor 2 is small, and It can effectively improve the service life of the screw rotor 2; the screw rotor 2 ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an underground power generation device, which belongs to the technical field of underground power generation machinery. The power generating device is composed of an upper casing, a lower casing, a screw rotor, a screw stator, an inner motor, a bypass valve, a main shaft and a generator set. A screw rotor is installed in the upper casing through a screw stator; The inner motor is installed on the inner wall of the inner hole of the rotor, the bypass valve is installed between the inner motor and the upper casing, the main shaft is installed on the inner motor, and the generator set is installed on the main shaft. The power generation device uses the difference between the number of heads of the screw rotor and the number of inner rotors to form a speed difference between the stator winding and the power generation rotor, thereby generating electricity through the stator winding and the power generation rotor; it is not powered by a battery with a short service life, and does not use The turbine generates electricity, which can effectively prolong the service life; it solves the problem that the drilling fluid easily affects the service life when using the turbine to generate electricity.
Description
technical field [0001] The invention relates to an underground power generation device, which belongs to the technical field of underground power generation machinery. Background technique [0002] In the field of shale gas exploitation, with the application of rotary steerable systems more and more widely, batteries or downhole generators are commonly used to supply power to downhole equipment during the measurement-while-drilling and logging-while-drilling processes. During the use of the battery, when the service life of the battery exceeds the design service life, the battery needs to be replaced. For long-term underground operations, it is urgent to use an underground generator to supply power to the underground electrical equipment. At present, the downhole generator generally adopts the turbine generator, and its principle is: the downhole drilling fluid impinges on the turbine to drive the rotor of the generator to rotate to generate electricity. Impurities in the d...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F03B13/02E21B47/12
CPCF03B13/02E21B47/12
Inventor 刘少胡周云凤
Owner YANGTZE UNIVERSITY