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Dry-running piston rod packing and method for operating a dry-running piston rod packing

A technology of sealing components and piston rods, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problem of radial movement of the sealing ring and piston rod, and achieve reliable sealing effect

Active Publication Date: 2018-07-17
BURCKHARDT COMPRESSION AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this mechanism is that radial movement of the seal ring relative to the piston rod is difficult due to the forces acting on it

Method used

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  • Dry-running piston rod packing and method for operating a dry-running piston rod packing
  • Dry-running piston rod packing and method for operating a dry-running piston rod packing
  • Dry-running piston rod packing and method for operating a dry-running piston rod packing

Examples

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Embodiment Construction

[0029] figure 1A longitudinal section is shown of a dry running piston rod seal assembly 10 for sealing a piston rod 5 extending through the piston rod seal assembly 10 and mounted so as to be movable in the longitudinal direction L or in the direction of movement 5b. The piston rod sealing assembly 10 comprises at least one cavity ring 3, a sealing cavity 3a and an annular sealing ring 2 arranged in the sealing cavity 3a, wherein the cavity ring 3 forms a sealing device 1 with the sealing cavity 3a and the sealing ring 2 . In at least one of the sealing chambers 3a or in each sealing chamber 3a, several sealing rings 2 (for example two or three sealing rings) may be arranged one after the other along the longitudinal direction L and contact each other. The piston rod seal assembly 10 has a high pressure side 10a and a low pressure side 10b with respect to the working gas G to be compressed. exist figure 1 The exemplary embodiment of the piston rod seal assembly 10 shown in...

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Abstract

The dry-running piston rod packing (10) for sealing a piston rod (5) supported in such a way that the piston rod can be moved in a longitudinal direction (L) comprises at least one chamber ring (3), asealing chamber (3a), and a sealing ring (2) arranged in the sealing chamber (3a), wherein the piston rod packing (10) has a high-pressure side (10a) and a low-pressure side (10b), wherein a lift-offdevice (4) is designed and arranged in such a way that the lift-off device can lift and lower the sealing ring (2) in the longitudinal direction (L).

Description

technical field [0001] The invention relates to a dry-running piston rod seal assembly according to the preamble of claim 1 . The invention also relates to a method of operating a dry-running piston rod seal assembly according to the preamble of claim 9 . Background technique [0002] A dry-running piston compressor is a compressor that works without external lubrication, such as lubricating oil, for example, in the compression parts. Here, the compressor chamber must be sealed as far as possible from its environment in order to prevent or at least minimize an undesired outflow of the medium to be compressed. The key point with regard to sealing is especially the area where the piston rod penetrates into the interior of the cylinder, where this passage is also referred to as the piston rod seal. [0003] In dry-running compressors, especially the sealing elements, such as sealing rings for sealing the piston rod, for example, are exposed to extremely high mechanical and th...

Claims

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Application Information

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IPC IPC(8): F16J15/00F16J15/44F16J15/56
CPCF16J15/006F16J15/56F16J15/441
Inventor N·法伊斯特埃尔
Owner BURCKHARDT COMPRESSION AG
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