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Hydrogen gas compressor seal fitting

A compressor and nitrogen sealing technology, which is applied to pump components, mechanical equipment, variable capacity pump components, etc., can solve the problems of hydrogen molecules being difficult to seal, and achieve the effects of low power consumption, simple operation and maintenance, and long life

Active Publication Date: 2013-11-13
NINGXIA BAOTA PETROCHEM SCI & TECH IND DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of shaft seal structure for hydrogen compressors to solve the problem that hydrogen molecules are not easy to seal

Method used

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  • Hydrogen gas compressor seal fitting

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing.

[0016] like figure 1 A sealing kit for a hydrogen compressor is shown, including a throttle ring (2), a stuffing box (3), a nitrogen seal chamber (7), an "O" ring (14), a stuffing box pressure plate (9), a stuffing pressure Cover (11), shaft seal ring (10), shaft seal compression bolt (12), shaft seal compression nut (13).

[0017] Install 1 set of throttle rings (2), 7 sets of stuffing boxes (3), packing pressing plates (9), 2 sets of nitrogen sealing chambers (7), and 2 sets of nitrogen stuffing boxes (8) on the stuffing box base (1) in sequence , Packing gland (12), multiple sets of shaft seal rings (11) are installed between the stuffing gland (12) and the piston rod (16), and then the shaft seal compression bolt (13) is installed, and the shaft seal compression nut is tightened (14).

[0018] A radial sealing ring (4), a tangential sealing ring (5) and a choke ring ...

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Abstract

The invention provides a hydrogen gas compressor seal fitting, which is formed by a throttle ring, multiple groups of packing boxes, a nitrogen seal cavity, a nitrogen packing box, an O-shaped ring, a packing box press plate, a packing press cover, multiple groups of shaft seal seal rings, a shaft seal compressing nut and a shaft seal compressing bolt; the throttle ring and the multiple groups of packing boxes achieve the seal aim by pressure reducing level by level, but the seal effect is not ideal as hydrogen molecules are not easy to seal, and the packings are worn. In the nitrogen seal cavity, the nitrogen pressure is micro-positive pressure relative to the decompressed hydrogen gas, so certain seal effect is achieved; and the final optimal seal effect is achieved by utilizing the multiple groups of shaft seal seal rings and adjusting the compressing gap through utilizing the shaft seal compressing bolt and the compressing nut.

Description

technical field [0001] The invention relates to a shaft seal structure, in particular to a hydrogen compressor shaft seal structure. Background technique [0002] The sealing structure is one of the key components of the compressor. Compressors have stricter requirements on shaft seals. [0003] Packing seal is a commonly used sealing method. The packing consists of one or more rings, contained in the stuffing box, and provides functions such as lubrication, cleaning, cooling, sealing, temperature and pressure during operation. The stuffing box is equipped with sealing rings, each ring is to prevent or limit the gas from entering the atmosphere or the isolation chamber, and each group of stuffing rings is assembled in a separate stuffing box. Each sealing ring hoop achieves a sealing effect on the piston rod, and at the same time tightly adheres to the groove surface of the stuffing box at right angles to the piston rod. The seal on the pressure side of the new packing e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/00
Inventor 孙永良孔德林邹启榆杨晓丽
Owner NINGXIA BAOTA PETROCHEM SCI & TECH IND DEV
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