Which expert has a schematic diagram of the hydraulic nut at the compressor piston rod connection?

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The following two papers should be useful; they contain diagrams. From the March 2009 issue of \"Compressor Technology\": Add to favorites, Submit an article. Failure analysis of the hydraulic coupling fastening device for reciprocating rich gas compressors – Li Xuguang. [Abstract]: An analysis was conducted on the loosening of the hydraulic coupling fastening devices in the reciprocating rich gas compressors used in catalytic units; the causes of failure were identified, and preventive measures were taken. 【Author’s Institution】: Shida Technology Group Co., Ltd., China University of Petroleum; 【Keywords】: compressor, crosshead, hydraulic connection, tightening, failure; 【Classification Number】: TH45; 【Summary】: 1 Introduction The crosshead connection method and structure of large reciprocating compressors used in petrochemical production are crucial for the reliable operation of these compressors. One of the catalytic cracking units owned by Shida Technology Group Co., Ltd. is equipped with a symmetrical water-cooled two-stage rich gas compressor of model 2D16-52/0·4-14-BX. During operation, noise was detected in the crankcase area; after switching to the backup unit, inspections were carried out on the crankcase and the crosshead area. \"China Equipment Engineering\", October 2004 – Add to favorites, Submit an article. Modification of the crosshead locking nut in reciprocating compressors by Chen Pingguang 【Abstract】: The faulty unit was disassembled and inspected to determine the reasons for the failure of the crosshead locking nut. Hydraulic connectors are used to modify the compressor crosshead lock nut. It introduces the structure and working principle of this connector. The renovation achieved the expected results. 【Author’s Unit】: Maintenance Workshop of Zhanjiang Dongxing Petroleum Enterprise Co., Ltd. 【Keywords】: Reciprocating compressor, cross-head lock nut, hydraulic connector, renovation 【Classification Number】: TH45 【Summary of the Text】: Two J752A/B reciprocating hydrogen compressors, which are second-hand equipment imported from Canada, were overhauled and reinstalled before being put into operation in 1989. The performance of these compressors was not very stable, with faults occurring from time to time. I. Analysis of the causes of failure: Based on the maintenance records and repair history of the compressors, it was found that the main faults in both hydrogen compressors were related to the high-pressure cylinders. The three failure records of the compressor show that the failures all occurred in the high-pressure section

Looking at your photo, the hydraulic nut resembles a structural diagram of the type shown below:

Bro, have you fixed it yet? Our device is the same as the one you sent, but during installation we found that the hydraulic tensioner cannot reach the area under stress behind the threads when pressure is applied; as a result, the part that bears the stress each time pressure is applied is the piston rod nut. This is quite confusing – please help us understand this issue