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A high-speed sealing internal fluid static and dynamic characteristics measurement system

A technology of static and dynamic characteristics and measurement system, applied in machine/engine, non-variable-capacity pump, pump control, etc., can solve problems such as inability to experimentally measure working conditions, inability to combine theory and engineering practice, etc.

Active Publication Date: 2022-03-01
重庆水泵厂有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no experimental platform for the static and dynamic characteristics of the screw seal in the centrifugal pump, so that the working conditions of various screw seals in the pump cannot be measured experimentally, which is the main reason why the theory and engineering practice cannot be combined

Method used

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  • A high-speed sealing internal fluid static and dynamic characteristics measurement system
  • A high-speed sealing internal fluid static and dynamic characteristics measurement system
  • A high-speed sealing internal fluid static and dynamic characteristics measurement system

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] For specific implementation: see Figure 1 to Figure 3 , a high-speed sealed internal fluid static and dynamic characteristics measurement system, including a test base 1, a sealed cavity 2, a drive assembly and a bearing seat 3, the sealed cavity 2 is horizontally inserted with a main shaft 4 along the central axis, and the main shaft 3. Bearings 28 are respectively connected to the left and right ends. The bearings are installed in the bearing housing 3 fixed on the test base. One end of the main shaft passes through the bearing housing and is connected with the driving assembly. The bottom can be rotated, the sealing cavity is also provided with a spiral sealing sleeve, the spiral sealing sleeve includes a rotor and a stator matched with it, the rotor is fixedly connected to the main shaft, the stator is fixedly connected to the sealing cavity, and ...

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Abstract

The invention discloses a static and dynamic characteristic measurement system of a high-speed sealed inner fluid, which comprises a test base, a sealing cavity, a driving assembly and a bearing seat. The sealing cavity is horizontally inserted with a main shaft along the central axis, and the left and right ends of the main shaft are respectively Connected with bearings, the bearings are installed in the bearing seat fixed on the test base, one end of the main shaft passes through the bearing seat and is connected with the drive assembly, the main shaft can rotate under the action of the drive assembly, and the sealed cavity is also connected There is a centering mechanism to adjust the center line between the main shaft and the sealing chamber to be on the same straight line, and a sensor assembly is also arranged on the sealing chamber to measure the static and dynamic characteristics of the sealing chamber. The drive assembly drives the main shaft to rotate at high speed, and injects high-pressure fluid into the water inlet to simulate the working scene of the spiral seal sleeve of the centrifugal pump, and obtains the static and dynamic characteristics of the spiral seal sleeve at this time through the measurement of the sensor component, so as to solve the problem of spiral seal Problems where theory and practice cannot be combined.

Description

technical field [0001] The invention belongs to the technical field of centrifugal pump analog measurement systems, in particular to a measurement system for static and dynamic characteristics of fluid in a high-speed seal. Background technique [0002] The excitation of high-speed circulating fluid in the sealing gap inside the centrifugal pump can easily induce the flow-induced vibration of the rotor, which will increase the vibration of the rotor in the centrifugal pump. The spiral seal sleeve is the key component to control the leakage of the centrifugal pump, and it has great influence on the efficiency of the centrifugal pump and the vibration of the rotor. Important significance, excessive leakage can even seriously affect the operation of the centrifugal pump, leading to major accidents. In addition, when the centrifugal pump is working, under the action of radial excitation, such as unbalanced excitation, the high-speed self-rotating rotor has radial vortex motion, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D15/00
CPCF04D15/0088
Inventor 马文生夏鹏邓英健王天周李方忠陈平伟
Owner 重庆水泵厂有限责任公司
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