Submersible motor shaft extension seal
A technology for submersible motors and shaft extensions. It is applied in the direction of electrical components, electric components, electromechanical devices, etc. It can solve problems such as unsuitability, difficult installation, and complex structure, and achieve the effect of enhanced sealing and good sealing.
Active Publication Date: 2018-01-26
浙江杰特工贸股份有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a submersible motor shaft end seal to improve the structure of the dynamic and static ring mechanical seal used for the submersible motor shaft end in the prior art, which is complicated in structure, difficult to install, and not suitable for deep water bodies problems at work
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[0022] In view of the fact that the dynamic and static ring mechanical seals used for the shaft extension of submersible motors in the prior art have the problems of complex structure, difficult installation, and unsuitability for working in deep water bodies, the inventor conceived a seal for the shaft extension end of submersible motors. pieces. The shaft extension end seal of the submersible motor includes at most two tubular bodies sleeved on the shaft extension end motor shaft of the submersible motor, one of the tubular bodies is placed outside the submersible motor, and each tubular body is fixedly connected by one end thereof The shell of the submersible motor, and the other end of the end is interference fit to the motor shaft, and each tubular body is provided with at least one ring-shaped protrusion that is interference fit to the motor shaft. When the motor shaft rotates, Each tubular body is interference-fitted to the end of the other end of the motor shaft and ea...
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The invention provides a seal for the shaft extension end of a submersible motor, which belongs to the field of submersible motors. It includes at most two tubular bodies sleeved on the motor shaft of the shaft extension end of the submersible motor, and one of the tubular bodies is placed in the submersible motor. Each tubular body is fixedly connected to the shell of the submersible motor through its one end, and the end of the other end is interference fit to the motor shaft. The interior of each tubular body is provided with at least one interference fit to the motor shaft. When the motor shaft rotates, each tubular body interferes with the end of the other end of the motor shaft and each ring-shaped protrusion rubs against the motor shaft. The shaft extension end seal of the submersible motor provided by the embodiment of the present invention not only has a simple structure but also has good sealing performance not affected by water depth.
Description
technical field [0001] The invention relates to the field of submersible motors, in particular to a seal at the shaft extension end of a submersible motor. Background technique [0002] At present, the shaft extension end of the submersible motor generally adopts a dynamic and static ring mechanical seal with double ends. However, such dynamic and static ring mechanical seals usually have a complex structure, so there are problems such as difficult production, high production cost and difficult installation; in addition, when the dynamic ring rotates, there is a gap between the dynamic ring and the static ring Large friction loss, so oil must be used for cooling, which requires a further increase in structural complexity of the oil cylinder (when a failure occurs, the oil in the oil cylinder may leak into the water, causing the water to be polluted); in addition, when the diving depth When it is too deep, the dynamic and static ring mechanical seal may reduce its sealing pe...
Claims
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IPC IPC(8): H02K5/124H02K5/132H02K5/10
Inventor 陈文书王仙萍
Owner 浙江杰特工贸股份有限公司