Reciprocating sealing performance test bed for magnetic liquid sealing device
A magnetic liquid and sealing device technology, which is applied in the direction of liquid tightness measurement by using liquid/vacuum degree, and by measuring the increase and deceleration rate of fluid, can solve the problems of unreported detection, improve reliability and accuracy, Easy handling and control, compact effect
Inactive Publication Date: 2010-09-15
BEIJING JIAOTONG UNIV
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Problems solved by technology
At present, the detection of the sealing performance of the seal is mostly aimed at the detection of the sealing performance of the seal under the static sealing condition, but there is no report on the detection of the sealing performance of the seal under the reciprocating motion
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Embodiment Construction
[0021] The present invention will be further described in conjunction with accompanying drawings.
[0022] A sealing performance test bench for a reciprocating magnetic liquid sealing device, such as figure 1 shown. The test bench includes: hydraulic control mechanism, stroke control part and actuator.
[0023] Stroke control part comprises: left module 11 (as Figure 5 shown), stroke switch 12, right module 13; left module 11 and right module 13 are sleeved on the reciprocating shaft 14, and the distance between left module 11 and right module 13 is the stroke required by the experiment. Right module is fixed on the reciprocating shaft 14 with bolt and left and right module screw connection. The travel switch 12 is fixed on the worktable below the middle position of the left module 11 and the right module 13, and when the reciprocating shaft 14 moved, the left module 11 and the right module 13 hit the travel switch 12. It can meet the experimental requirements of differen...
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The invention discloses a reciprocating sealing performance test bed for a magnetic liquid sealing device. Left and right modules (11), (13) of a stroke control part of the test bed are sleeved on a reciprocating shaft (14); and a travel switch (12) is fixed on a work table. A first linear bearing (16) of an execution mechanism is arranged in a first bearing block (17) which is fixedly connected with a first bearing end cover (15) and a sealing cover (18) respectively; a second bearing block (20) is embedded into the sealing cover; a second linear bearing (19) and a magnet isolating ring (21) are arranged in the second bearing block; a sealing piece (22) is arranged in a sealing shell (23) and arranged on the reciprocating shaft after the magnetic liquid is injected; the sealing shell and the second bearing block are fixed on the sealing cover; a vacuum meter (29), a pressure gage (30), a vacuum pump (32) and a compressor (34) are connected with respective interfaces respectively; and a piston rod 9 is welded with the reciprocating shaft 14. Therefore, the detection of the sealing performance of the sealing piece in the reciprocating movement is realized.
Description
technical field [0001] The invention relates to a sealing performance test bench of a reciprocating magnetic liquid sealing device. Background technique [0002] During the movement of the reciprocating shaft, the sealing effect of the seal directly affects the overall quality of the equipment. At present, the detection of the sealing performance of the seal is mostly aimed at the detection of the sealing performance of the seal under the static sealing condition, but there is no report on the detection of the sealing performance of the seal under the reciprocating motion. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a sealing performance test bench for a reciprocating magnetic liquid sealing device. [0004] Technical scheme of the present invention is: [0005] A test bench for sealing performance of a reciprocating magnetic liquid sealing device includes: a hydraulic control mechanism, a stroke control pa...
Claims
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IPC IPC(8): G01M3/26
Inventor 李德才杨小龙
Owner BEIJING JIAOTONG UNIV