Testing Platform with Floating Cylinder for High-pressure and High-speed Reciprocating Sealing Experiment

Patent metadata

Field	Value
Publication number	US-2021325297-A1
Application number	US-201917284735-A
Country	US
Kind code	A1
Filing date	Oct 26, 2019
Priority date	Sep 5, 2019
Publication date	Oct 21, 2021
Grant date	—

Abstract

A testing platform with a floating cylinder for high-pressure and high-speed reciprocating sealing experiment, characterized in that, includes a frame, a cylinder body for testing and a high-speed driving device, the frame comprises a horizontal rolling guide rail (9), the cylinder body for testing comprises a cylinder, the cylinder is floatingly mounted on the rolling guide rail and is mounted to the frame through a tension-compression sensor which is in the same direction as the rolling guide rail, the cylinder is cylindrical as a whole, has a cavity in a middle and openings on two sides with a diameter slightly greater than a diameter of a test rod, the cylinder includes a left end cover affixed on a left side, a right end cover affixed on a right side, a left seal between the left end cover and the cylinder, a right seal between the right end cover and the cylinder, the piston rod penetrates into the cylinder horizontally and passes through the left end cover, the left seal, the right seal and the right end cover, the piston rod has one side connected to the high-speed driving device with a motor. The present invention can provide stable high-pressure and high-speed working conditions, can accurately measure the frictional force of the sealing ring, and provide more extensive experimental conditions and experimental data for the research of reciprocating sealing performance.

First claim

What is claimed is:

1 . A testing platform with a floating cylinder for high-pressure and high-speed reciprocating sealing experiment, characterized in that, comprising: a frame ( 1 ), a cylinder body for testing and a high-speed driving device, a rolling guide rail ( 9 ) is fixed on said frame ( 1 ), said cylinder body for testing comprises a cylinder ( 6 ), said cylinder ( 6 ) is floatingly mounted on said rolling guide rail ( 9 ) and is mounted to said frame ( 1 ) through a tension-compression sensor ( 10 ) which is in the same direction as said rolling guide rail ( 9 ), said cylinder ( 6 ) is cylindrical as a whole and has a cavity in a middle thereof and openings on two sides thereof, a diameter of said opening is slightly greater than a diameter of a test rod ( 13 ), said cylinder ( 6 ) comprises a left end cover ( 3 ) affixed on a left side thereof, a right end cover ( 11 ) affixed on a right side thereof, a left seal ( 21 ) between said left end cover ( 3 ) and said cylinder ( 6 ), a right seal ( 15 ) between said right end cover ( 11 ) and said cylinder ( 6 ), said piston rod ( 13 ) penetrates into said cylinder ( 6 ) horizontally and penetrates said left end cover ( 3 ), said left seal ( 21 ), said right seal ( 15 ) and said right end cover ( 11 ), said piston rod ( 13 ) has one side connected to said high-speed driving device with a motor ( 28 ).

2 . The testing platform with a floating cylinder for high-pressure and high-speed reciprocating sealing experiment accordingly to claim 1 , characterized in that: said cylinder ( 6 ) has an outer wall matched and fixed with inner walls of a left water jacket ( 4 ) and a right water jacket ( 8 ) to secure into position, said left water jacket ( 4 ) and said right water jacket ( 8 ) are installed on said rolling guide rail ( 9 ) and is capable of movement in a horizontal direction.

3 . The testing platform with a floating cylinder for high-pressure and high-speed reciprocating sealing experiment accordingly to claim 1 , characterized in that: said cylinder ( 6 ) is positioned on top of said frame ( 1 ), said frame ( 1 ) comprises a left support seat ( 2 ) on a left side of said cylinder ( 6 ) and a right support seat ( 12 ) on a right side of said cylinder ( 6 ), a left linear bearing ( 22 ) has an outer wall matched and fixed with a mounting hole of said left support seat ( 2 ) to secure into position, a right linear bearing ( 14 ) has an outer wall matched and fixed with a mounting hole of said right support seat ( 12 ) to secure into position, said piston rod ( 13 ) penetrates through said left linear bearing ( 22 ) and said right linear bearing ( 14 ).

4 . The testing platform with a floating cylinder for high-pressure and high-speed reciprocating sealing experiment accordingly to claim 1 , characterized in that: said outer wall of said cylinder ( 6 ) is provided with a left water groove ( 5 ) and a right water groove ( 7 ), said left water jacket ( 4 ) has a left water inlet ( 20 ) and a left water outlet ( 19 ) connected to two ends of said left water groove ( 5 ) respectively, said right water jacket ( 8 ) has a right water inlet ( 17 ) and a right water outlet ( 16 ) connected to two ends of said right water groove ( 7 ) respectively, said left water inlet ( 20 ) is connected to a water pump, said left water outlet ( 19 ) is connected to said right water inlet ( 17 ) by a connecting pipe, said right water outlet ( 16 ) is connected to a water tank.

5 . The testing platform with a floating cylinder for high-pressure and high-speed reciprocating sealing experiment accordingly to claim 1 , characterized in that: said outer wall of said cylinder ( 6 ) is provided with an oil inlet ( 18 ).

6 . The testing platform with a floating cylinder for high-pressure and high-speed reciprocating sealing experiment accordingly to claim 1 , characterized in that: said high-speed driving device comprises a motor ( 28 ), an eccentric wheel ( 26 ) affixed on an output shaft of said motor ( 28 ), a connecting member ( 23 ) affixed on one side of said piston rod ( 13 ) and hinged to a joint bearing ( 24 ), said joint bearing ( 24 ) has a left side affixed to a right side of a guiding rod ( 25 ), a right side of said guiding rod ( 25 ) is a circular ring, and a rolling bearing ( 27 ) is installed between an inner side of said circular ring and an outer side of said eccentric wheel ( 26 ).

7 . The testing platform with a floating cylinder for high-pressure and high-speed reciprocating sealing experiment accordingly to claim 1 , characterized in that: said motor ( 28 ) drives said eccentric wheel ( 26 ), said rolling bearing ( 27 ), said guiding rod ( 25 ) and said piston rod ( 13 ), and restricts a degree of movement of said piston rod ( 13 ) through said left linear bearing ( 22 ) and said right linear bearing ( 14 ) so as to realize a high-speed reciprocating linear movement of said piston rod ( 13 ).

8 . The testing platform with a floating cylinder for high-pressure and high-speed reciprocating sealing experiment accordingly to claim 1 , characterized in that: said right water jacket ( 8 ) is connected to said frame ( 1 ) through the horizontal tension-compression sensor ( 10 ), and a reading of said tension-compression sensor ( 10 ) represents a frictional force of a sealing ring on said cylinder ( 6 )

Assignees

• Univ Tsinghua

Inventors

• Guo Fei
• Xiang Chong
• Zhang Zhaoxiang
• Huang Yijie
• Jia Xiaohong
• Suo Shuangfu
• Wang Yuming

Classifications

• G01M13/005 Primary

  Sealing rings · CPC title

• G01N19/02 Primary

  Measuring coefficient of friction between materials {(testing of tyres G01M17/02; determinations of friction coefficient used in vehicle braking or traction control systems B60T8/172)} · CPC title

• G01L5/0033

  applying a pulling force · CPC title

• G01L5/0028

  Force sensors associated with force applying means (G01L5/0052, G01L5/0057, G01L5/0061 take precedence) · CPC title