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Connection means between rod and crosshead for a reciprocating machine

A connecting device, reciprocating technology, applied in the direction of reciprocating piston engine, crosshead, variable displacement engine, etc., can solve the problems of horizontal deviation, vertical deviation, coaxiality error, etc.

Active Publication Date: 2009-10-14
NUOVO PIGNONE TECH SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] Another consequential disadvantage is that, for large-scale reciprocating machines, manufacturing variances of individual components can lead to concentricity errors and consequent horizontal and vertical misalignments beyond set limits

Method used

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  • Connection means between rod and crosshead for a reciprocating machine
  • Connection means between rod and crosshead for a reciprocating machine
  • Connection means between rod and crosshead for a reciprocating machine

Examples

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Embodiment Construction

[0031] Referring to the accompanying drawings, these show a connection 10 between a rod 20 and a crosshead 30 for a reciprocating machine, in particular for a reciprocating compressor, said connection 10 comprising a flange 35 .

[0032] The rod 20 is preferably connected to Figure 4 A piston 70 is shown sliding within a cylinder 60 of a reciprocating machine, while the crosshead 30 is shown connected to a connecting rod by a pin 32 .

[0033] Said flange 35 has a preferably axial through hole 38 in the center and is preferably fixed by means of fixing means such as a series of connecting rods 37. Object 33 of the crosshead 30.

[0034] The connecting device 10 includes a series of eccentric positioning pins 40 between the crosshead 30 and the flange 35, preferably two, so that the crosshead 30 and the The through-hole 38 in the central position in which the flange 35 of the rod 20 is inserted is coaxial, that is, the coaxiality between the crosshead 30 and the rod 20 The ...

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PUM

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Abstract

A connecting device (10) between a rod (20) and a crosshead (30) for a reciprocating machine, comprising a flange (35) fixed to the crosshead (30) by a fixing device (37), the rod connection To a piston (70) sliding inside a cylinder (60) of a reciprocating machine, the flange (35) includes a shaft for inserting a rod (20) fixed to the flange (35) by a clamping system (50) To the through hole (38), the coupling device (10) includes a series of eccentric dowel pins (40) between the flange (35) and the crosshead (30) to fully and permanently position the rod (20) Coaxial with the cylinder (60). This advantageously maximizes the life of the sealing system (90) integrated with the cylinder (60) and in contact with the rod (20).

Description

technical field [0001] The invention relates to a connection between a rod and a crosshead for reciprocating machines, in particular for reciprocating compressors. Background technique [0002] In reciprocating compressors where connecting rods are connected to associated pistons by means of crossheads and corresponding rods, the connection between rods and crossheads is critical to the reliability, longevity and performance of the reciprocating machine factor. [0003] In particular, the connecting device affects the reliability and the longevity of the sealing system between the cylinder in which the piston slides and said rod preventing the flow of gas from the cylinder to the connecting device. [0004] Said sealing system comprises a series of wear-prone elements integrated with the cylinder and also in contact with a rod sliding axially relative to the cylinder, this rod being attached to the piston. [0005] The series of elements of the sealing system have a useful...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C5/00
CPCF04B39/0022F16C5/00F01B9/026
Inventor F·格拉齐亚尼F·法尔西亚尼S·普拉特斯
Owner NUOVO PIGNONE TECH SRL
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