An axial force measuring device and method for a multi-stage direct-coupled centrifugal pump
A measuring device and axial force technology, which is applied in pump control, non-variable pumps, machines/engines, etc., can solve the problems that the service life of bearings cannot be grasped, and achieve simple structure, long service life and strong practicability Effect
Active Publication Date: 2016-01-20
SHANGHAI KAIQUAN PUMP IND GROUP
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Problems solved by technology
[0004] The purpose of the present invention is to provide an axial force measuring device and method for multistage direct-coupled centrifugal pumps. By installing the force measuring device above the motor, the service life of the bearings in the existing multistage direct-coupled centrifugal pumps cannot be overcome. Grasp the shortcoming, thereby realize the purpose of the present invention
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[0026] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0027] Such as figure 1 As shown, an axial force measuring device 400 for a multi-stage direct-coupled centrifugal pump according to the present invention is set at the top of the multi-stage direct-coupled centrifugal pump, and the multi-stage direct-coupled centrifugal pump is pump body from bottom to top 100, the motor base 200, the motor 300, the present invention is located above the motor 300.
[0028] Such as figure 2 As shown, the center of the motor 300 is a motor shaft 310, and a cylindrical roller bearing 312 for bearing radial force is provided below the motor shaft; a support 320 is provided above the motor 300, and the support 320 is fixed on the motor casing 301. In this implementation In the example, the mating surfaces of the b...
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The invention discloses an axial force measuring device and an axial force measuring method for a multistage direct-connection centrifugal pump. The axial force measuring device comprises a force measuring device arranged on a motor, wherein the force measuring device comprises a bracket, a measuring device and a force conducting device; the force conducting device is connected with a motor shaft; a first bearing is arranged between the force conducting device and the motor shaft; the first bearing is used for transmitting the axial force of the motor shaft to the forced conducting device; the measuring device is connected with the force conducting device and used for measuring the axial force of the force conducting device; the bracket is arranged on a shell of the motor; and the measuring device and the force conducting device are arranged in the bracket. The axial force measuring device has the benefits as follows: the axial force measuring device is directly transformed on the basis of the motor structure of the multistage direct-connection centrifugal pump, so the actual value of the axial force can be measured accurately, additional space is not occupied, the using components are obtained by the transformed motor, the cost is saved effectively, the effect is good, the structure is simple, the service life is long, and high practicability is achieved.
Description
technical field [0001] The invention relates to a measuring device, in particular to an axial force measuring device and method for a multistage direct-connected centrifugal pump. Background technique [0002] The main reasons for the axial force of the multi-stage direct-coupled centrifugal pump are as follows: 1. The force generated by the pressure asymmetry of the front and rear cover plates of the impeller, and the pressure generated by the difference in the pressure area; 2. The flow direction of the liquid flows through the impeller. 3. The force generated by the pressure difference between the working surface and the back of the twisted blade; 4. The force generated by the pressure difference between the front and rear cover plates in the impeller flow channel at the same radius. [0003] The existing multi-stage direct-coupled centrifugal pump has a large number of stages, the actual value of the axial force is quite different from the theoretical value, and the axia...
Claims
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IPC IPC(8): F04D15/00
Inventor 施亮卢熙宁陈灿
Owner SHANGHAI KAIQUAN PUMP IND GROUP