Electromagnetic differential mechanism of mud centrifuge
A technology for centrifuges and differentials, applied to centrifuges, electromechanical devices, electric brakes/clutches, etc., can solve problems such as speed differences, and achieve the effects of low cost of use, easy operation, and simple maintenance
Inactive Publication Date: 2015-07-15
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an electromagnetic differential of a mud centrifuge. The present invention does not need to realize the speed difference through the gear transmission ratio like a planetary differential, and can realize it according to the situation of the mud liquid stepless speed regulation
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[0012] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0013] as attached figure 1 , figure 2 , image 3 As shown, an electromagnetic differential of a mud centrifuge in the present invention is mainly composed of an outer rotor 20 and an inner rotor 21. The outer rotor 20 is composed of an outer rotor core 11 and a squirrel-cage winding 12. The outer rotor core 11 is made of laminated silicon steel sheets to reduce eddy current and hysteresis loss; squirrel-cage winding 12 is made of copper strips 16 inserted into the outer rotor core 11, and the two ends of all copper strips 16 are respectively welded to two rat cage windings. The copper end ring 17 of the cage winding forms a closed circuit; the electromagnetic differential housing 10 is connected to the drum 4, and the drum 4 provides the outer rotor 20 with a rotating speed, and the direction of the speed is consistent.
[0014] The inner rot...
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The invention relates to an electromagnetic differential mechanism of a mud centrifuge, which is used in petroleum and natural gas exploration. The electromagnetic differential mechanism mainly comprises an outer rotor and an inner rotor, wherein the outer rotor consists of an outer rotor iron core and a squirrel-cage winding, and a closed-loop circuit is formed by the squirrel-cage winding in a way that copper bars are inserted into the outer rotor iron core and that the two ends of each copper bar are welded on two copper end rings of the squirrel-cage winding; the inner rotor consists of an inner rotor iron core, an inner rotor winding and a rotating shaft, and the inner rotor iron core is also a part of a motor magnetic circuit; the inner rotor winding is a part of the circuit; one end of the rotating shaft is connected with a spiral conveyor by a key, and the other end of the rotating shaft is connected with a velometer; the velometer is connected with a variable-frequency control cabinet, speed is simultaneously fed back to the variable-frequency control cabinet, the rotating speed is changed by the variable-frequency control cabinet through a variable-frequency speed regulating method, and the rotating speed is provided to the spiral conveyor. The electromagnetic differential mechanism has the advantages of low use cost, capable of regulating speed in a stepless way, capability of adapting to severe environmental work conditions, simplicity in operation and simplicity in maintenance.
Description
technical field [0001] The invention relates to an electromagnetic differential of a mud centrifuge used for oil and natural gas drilling. Background technique [0002] The mud centrifuge is used to separate the solid-liquid phase of the mud liquid, which is realized by the speed difference between the screw of the screw conveyor and the drum. At present, the differential speed device used in the mud centrifuge uses a differential device. And most of the differentials used at home and abroad are planetary gear differentials and hydraulic motor differentials. For the planetary gear differential, the slip rate is determined by the transmission ratio between the differential gears, which is fixed and cannot be adjusted. If you want to adjust, you can only replace the gears with different numbers of teeth. Therefore, it is very troublesome to adjust the slip ratio, and it is a step-by-step speed regulation. In addition, although the planetary gear differential has the advantag...
Claims
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IPC IPC(8): B04B9/10H02K49/00
Inventor 何畏熊尉伶唐剑兵周晓敏李波胡玉茂
Owner SOUTHWEST PETROLEUM UNIV