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Simulated real working condition mechanical seal friction coefficient testing device with adjustable closing force

A mechanical seal and friction coefficient technology, which is applied in the field of mechanical seal performance testing devices, can solve problems such as narrow range of adaptability to working conditions, difficulty in online adjustment of sealing closing force, and insufficient test accuracy, achieving the effect of high test accuracy

Pending Publication Date: 2022-06-28
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0005] Aiming at the problems existing in the existing mechanical seal friction coefficient measurement device that the test accuracy is not high enough, the range of adaptability to working conditions is narrow, and the online adjustment of the seal closing force is difficult, the present invention provides a simulated device with high test accuracy and convenient adjustment of the closing force. Mechanical seal friction coefficient test device under actual working conditions

Method used

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  • Simulated real working condition mechanical seal friction coefficient testing device with adjustable closing force
  • Simulated real working condition mechanical seal friction coefficient testing device with adjustable closing force
  • Simulated real working condition mechanical seal friction coefficient testing device with adjustable closing force

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Embodiment Construction

[0024] The implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-4 , a mechanical seal friction coefficient test device with adjustable closing force under realistic working conditions, including a mechanical seal pair 1, a drive shaft 2, a main seal cavity 3, a secondary seal cavity 4, an air bearing 5, and a sealed torque transmission assembly 6. Sealing torque test assembly 7 and axial force loading test assembly 8. The mechanical seal pair 1 includes a moving ring 11 and a static ring 12, wherein the moving ring 11 is a fixed installation ring, the static ring 12 is a floating installation ring, the moving ring 11 is driven to rotate by the driving shaft 2, and the static ring 12 is supported by the set screw 121. The shaft sleeve 61 is tightly connected, and the moving ring 11 and the static ring 12 form a pair of mechanical seal pairs. The driving shaft 2 and the moving rin...

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Abstract

The invention discloses a closing-force-adjustable quasi-real-condition mechanical seal friction coefficient testing device which comprises a mechanical seal pair, a driving rotating shaft, a main seal cavity, an auxiliary seal cavity, an air bearing, a seal torque transmission assembly, a seal torque testing assembly and an axial force loading testing assembly. The main sealing cavity is fixedly connected with the auxiliary sealing cavity, the driving rotating shaft is arranged in the main sealing cavity, the mechanical sealing pair is arranged at the joint of the main sealing cavity and the auxiliary sealing cavity, the air bearing is arranged in the auxiliary sealing cavity, and the sealing torque transmission assembly is arranged in the auxiliary sealing cavity and matched with the air bearing. The axial force loading test assembly is arranged in the auxiliary sealing cavity, and the sealing torque test assembly is arranged at the end, away from the main sealing cavity, of the auxiliary sealing cavity. According to the invention, the closing force of the mechanical seal end face can be conveniently regulated and controlled and the friction coefficient of the end face can be accurately tested on line in place under the conditions of speed and pressure.

Description

technical field [0001] The invention relates to the technical field of mechanical seal performance testing devices, in particular to a mechanical seal end face friction coefficient testing device. Background technique [0002] Mechanical seals are widely used in rotating machinery such as centrifugal pumps, compressors and stirred tanks because of their advantages of small leakage and good self-compensation performance. The friction coefficient is one of the important parameters in the design of mechanical seals. It can reflect the lubrication state of the seal face, and is also closely related to other sealing properties such as seal friction power consumption, wear amount, and face temperature rise. The friction coefficient of the mechanical seal end face is the ratio of the end face friction force to the axial load received. The friction force can be obtained indirectly by testing the sealing torque, and the axial load can be obtained directly through the loading force or...

Claims

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Application Information

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IPC IPC(8): G01N19/02G01M13/00
CPCG01N19/02G01M13/00
Inventor 江锦波徐小富倪丽王梦娇彭旭东马艺
Owner ZHEJIANG UNIV OF TECH
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