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Gap-controllable mechanical sealing device based on hinge structure

A technology of mechanical sealing device and hinge structure, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problems of manual operation, poor safety and reliability, poor self-adaptive ability, etc., and achieve improved intelligence, simple structure, and reliability high control effect

Pending Publication Date: 2022-01-18
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The controllable sealing researched at home and abroad today focuses on the monitoring and control of a single structural parameter, the system can only operate under specific working conditions, the self-adaptive ability is poor, and manual operation is required; in addition, the control system is too complicated, and the safety and reliability are poor. Make it difficult for the entire device to continue to operate stably

Method used

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  • Gap-controllable mechanical sealing device based on hinge structure
  • Gap-controllable mechanical sealing device based on hinge structure
  • Gap-controllable mechanical sealing device based on hinge structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 A mechanical seal device with controllable clearance based on a hinge structure according to the present invention includes a mechanical seal device 100 and an end face clearance regulating device 200;

[0033] The mechanical seal device 100 includes a housing assembly 110, a static ring assembly 120, a moving ring assembly 130 matched with the static ring assembly and used for sealing, and a rotating shaft 1 for driving the moving ring assembly to rotate in a circumferential direction; the housing assembly 110 has a gap Sleeve on the rotating shaft 1, and form an installation cavity between the housing assembly 110 and the rotating shaft 1; the static ring assembly 120 and the moving ring assembly 130 are arranged between the housing assembly 110 and the rotating shaft 1 In the installation cavity; the static ring assembly 120 is arranged on the low-pressure side 25 of the installation cavity, including the static ring seat 4, the static ring 2 sealed in th...

Embodiment 2

[0045] Embodiment 2 A method for controlling a gap-controllable mechanical seal device based on a hinge structure according to the present invention includes the following steps:

[0046] 1) The ultrasonic transducer 19 detects the thickness of the gap liquid film or the friction state through high-frequency ultrasonic waves; at the same time, the first thermocouple 17 and the second thermocouple 18 respectively measure the temperature in the installation cavity and at the outlet of the sealing gap;

[0047] 2) The signal conditioner 21 converts the ultrasonic signal measured by the ultrasonic transducer 19, the temperature signal measured by the first thermocouple and the second thermocouple into a digital signal recognizable by the microprocessor 22;

[0048] 3) The microprocessor 22 calculates the acquired digital signal and compares it with the standard database to obtain the corresponding sealing gap value;

[0049] 4) The microprocessor 22 outputs the corresponding curre...

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Abstract

The invention discloses a gap-controllable mechanical sealing device based on a hinge structure. The gap-controllable mechanical sealing device comprises a mechanical sealing device body and an end face gap adjusting and controlling device, the mechanical sealing device body comprises a shell assembly, a static ring assembly, a movable ring assembly and a rotating shaft, the shell assembly sleeves the rotating shaft in a clearance manner, the static ring assembly comprises a static ring seat and a static ring, the static ring seat sleeves the rotating shaft in a clearance manner, the static ring is provided with a static ring sealing surface facing the movable ring assembly, the hinge structure is formed between the static ring sealing surface and the rear end part of the static ring, the movable ring assembly comprises a spring seat, a push ring and a movable ring which are sequentially and coaxially arranged on the rotating shaft in a sleeving mode from the high-pressure side to the low-pressure side, the movable ring is provided with a movable ring sealing face facing the static ring, a sealing gap is formed between the movable ring sealing face and the static ring sealing face, the end face gap adjusting and controlling device comprises a monitoring mechanism and a control mechanism, the monitoring mechanism comprises an ultrasonic transducer and a flow meter, and the control mechanism comprises a piezoelectric actuator, a signal conditioner and a microprocessor. The gap-controllable mechanical sealing device has the beneficial effects that the size of the sealing gap can be controlled, and a sealing end face is stably lubricated.

Description

technical field [0001] The invention belongs to the technical field of shaft end dynamic sealing of fluid conveying equipment, and specifically relates to a mechanical sealing device with controllable clearance based on a hinge structure, which can realize the controllability of the clearance of the sealing end face, so as to ensure the stable lubrication and low leakage performance of the liquid film on the sealing end face . Background technique [0002] The development of intelligent equipment is the future development trend, and the intelligent mechanical seal is one of the indispensable key links in the intelligent equipment. It is also an urgent need to effectively solve the existing problems of high-end equipment mechanical seals and develop new functions of mechanical seals. strategic direction of development. [0003] With the rapid development of industry, mechanical seal devices often work under non-optimal film thickness, and often experience transient condition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/34F16J15/40
CPCF16J15/3432F16J15/346F16J15/3404F16J15/3452F16J15/40F16J15/3492
Inventor 孟祥铠尹佳乐江锦波马艺彭旭东
Owner ZHEJIANG UNIV OF TECH
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