Sealing wear-ring dynamic/static state exciting force effect characteristic parameter testing device and method

A characteristic parameter and testing device technology, which is applied in the direction of measuring device, vibration testing, mechanical component testing, etc., to achieve the effect of comprehensive testing parameters, simplified experimental device and simple structure.

Active Publication Date: 2017-12-22
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the rapid development of the industry, the requirements of users and designers for the hydraulic performance and dynamic performance of centrifugal pumps are also constantly increasing. At present, the sealing performance and dynamic performance of smooth liquid circulation seals widely used in centrifugal pumps are facing great challenges.

Method used

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  • Sealing wear-ring dynamic/static state exciting force effect characteristic parameter testing device and method
  • Sealing wear-ring dynamic/static state exciting force effect characteristic parameter testing device and method
  • Sealing wear-ring dynamic/static state exciting force effect characteristic parameter testing device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Embodiment 1, the test device for the characteristic parameters of the dynamic and static excitation force of the sealing ring, such as Figure 1-3 As shown, it includes the main device of the test bench, the mouth ring loading measurement device and the circulation pipeline system.

[0070] Such as figure 1 As shown, the main device of the test bench includes a frame and a main shaft 2, the driving end of the main shaft 2 is connected with a drive motor assembly, and the middle section of the main shaft 2 is equipped with a mouth ring rotor 18 fixedly connected to the main shaft 2; in this embodiment, the main shaft 2 adopts The specific connection method between the stepped shaft and the main shaft 2 and the mouth ring rotor 18 is to set the rotor positioning sleeve 34 set on the main shaft 2 on the right side of the mouth ring rotor 18, and to set the stop gasket on the left side of the mouth ring rotor 18 III42 and round nut III43; one end of the positioning sleeve...

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Abstract

The invention provides a sealing wear-ring dynamic / static state exciting force effect characteristic parameter testing device and method; the testing device comprises an experiment table body device, a wear-ring loading and measuring device, and a circulation pipeline system; the wear-ring loading and measuring device comprises a dynamic loading measuring device and a static state loading measuring device; the dynamic loading measuring device comprises an exciter assembly, a force transducer assembly and an exciter probe assembly connected in sequence, and an accelerometer assembly arranged on a wear-ring stator and a displacement sensor assembly arranged right opposite to a wear-ring rotor, wherein the exciter probe assembly makes contacts with the wear-ring stator; the static state loading measuring device comprises a loading connecting rod, a spring cover, a force transducer III, a pulley and a pneumatic loading device, wherein the loading connecting rod is connected with the wear-ring stator. The testing device and method can load dynamic / static exciting force for to-be-measured wear-ring sealing, thus making up parameters tested by the static loading measuring device, and providing more comprehensive test parameters.

Description

technical field [0001] The invention relates to a testing device and method for an orifice ring of a centrifugal pump, in particular to a testing device and method for characteristic parameters of dynamic and static exciting force action of a sealing orifice ring. Background technique [0002] With the development of industry, the rotor system of centrifugal pumps under the requirements of high pressure and high power density is constantly developing towards multi-stage and high-speed development. There are multiple sets of impeller seal rings, inter-stage seals, balance drums, etc. in such high-pressure multi-stage centrifugal pumps. Ring sealing structure, its main function is to maintain pressure difference and reduce leakage. Under the influence of the "Loma King effect", the fluid excitation force in the annular seal has an important impact on the natural frequency, vibration, response and other dynamic characteristics and dynamic behavior of the centrifugal pump rotor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02G01M13/00
CPCG01M7/025G01M7/027G01M13/00Y02E30/30
Inventor 朱祖超张振杰翟璐璐池忠煌崔宝玲
Owner ZHEJIANG SCI-TECH UNIV
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