CN102384071A - High-pressure air cylinder chamber seal structure of reciprocating type piston compressor - Google Patents
High-pressure air cylinder chamber seal structure of reciprocating type piston compressor Download PDFInfo
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- CN102384071A CN102384071A CN201110383926XA CN201110383926A CN102384071A CN 102384071 A CN102384071 A CN 102384071A CN 201110383926X A CN201110383926X A CN 201110383926XA CN 201110383926 A CN201110383926 A CN 201110383926A CN 102384071 A CN102384071 A CN 102384071A
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Abstract
The invention provides a high-pressure air cylinder chamber seal structure of a reciprocating type piston compressor, the high-pressure air cylinder chamber seal structure has the advantages of realizing the reliability of high-pressure air cylinder chamber sealing, utilized security and processed economy. The seal structure comprises a cylinder body and a high-pressure gas cavity; the seal structure is characterized in that a fabrication hole inner end face and an outer end plane of the cylinder body are respectively provided with an inner end annular groove, and an outer end annular groove; an external ring surface of an outer convex circle of a plug with the outer convex circle is fitted on a ring surface of the inner end annular groove, and the inner end annular groove approaches to a ring surface of the outer end annular groove so as to provide with an annular taper liner; the outer convex circle of the plug is provided with a same slope inclined plane corresponding to the annular taper liner, and an end cover covers the outer end annular groove of the cylinder body; an external ring plane of the end cover is closely fitted the ring surface of the outer end annular groove, a bolt penetrates through the end cover and is in threaded connection with a connecting part of the plug; and the external ring surface of the connecting part of the plug is closely fitted an internal ring surface of the fabrication hole.
Description
Technical field
The present invention relates to the technical field of the sealing configuration of reciprocating-piston compressor, be specially reciprocating-piston compressor high pressure cylinder cavity seal.
Background technique
Reciprocating-piston compressor is a kind of every profession and trade that is widely used in, through changing the universal machine that the gas in the jar volume realizes that gas pressure increases.In some mesohigh petrochemical equipment technological process and special circumstances, require gas pressure high especially, require usually to reach more than the 10MPa, generally use the forging cylinder could satisfy usage requirement.Usually the forging cylinder can be divided into induction part, cylinder chamber part and discharge portion, and induction part has three chambers that link to each other respectively with discharge portion.They are respectively that two air valve chambeies and one advance (row) air cavity.For two air valve chambeies and the exhaust port that is communicated with the forging cylinder, can only begin from the cylinder body outside to form the gas in the jar passage, thereby produce a processing technology hole at the cylinder body end face through machining.In actual production, all can take suitable sealing configuration to seal.Particularly some explosive occasions especially will be noted the structural design here, do not allow the potential safety hazard that exists seal failure, explosion hazard gases to leak.
Existing sealing configuration mainly contains following dual mode:
Mode one is as shown in Figure 1: through between plug 1 and the cylinder body 2 be threaded and the outside weldings weld seam realize the sealing.These structure existing problems:
1. because employing is threaded, and processing only relies on tapping to solve, precision is difficult for guaranteeing.
2. owing to adopt welded structure to dismantle.
3. the weld seam melting zone is little, is prone to produce weld cracking or welding stress, and weld seam only depends on surface seepage to detect can't guarantee fully that its defective can come to light fully.
4. right-hand member air flue hole is a high-pressure section, and left end is the normal pressure part, though this kind sealing means structure is simple, uncertain factor is many.Rely on screw thread pretightening force and welding to be had potential safety hazard by motive sealing.
Mode two is as shown in Figure 2: it is through applying bigger pretightening force to the bolt 3 that is uniformly distributed with, and with flange 4 being pressed on the cylinder body 2 ' tightly, realizes sealing through the annular taper liner between flange 4 and the cylinder body 2 ' 5.These structure existing problems:
1. owing to adopt the blank flange structure, physical dimension is bigger, and the bolt arrangement difficulty causes the cylinder profile to increase, and is less economical.
2. right-hand member air flue hole is a high-pressure section, and left end is the normal pressure part, relies on the pretightening force of bolt to seal, and for by movable sealing structure, has big potential safety hazard.
Summary of the invention
To the problems referred to above, the invention provides reciprocating-piston compressor high pressure cylinder cavity seal, it realizes the reliability of high pressure cylinder cavity seal, the Security and the Economics of Processing of use.
Reciprocating-piston compressor high pressure cylinder cavity seal; Its technological scheme is such: it comprises cylinder body, heavy pressure gas chamber; It is characterized in that: the auxiliary hole interior edge face of said cylinder body, exterior edge face are respectively arranged with inner circular groove, outer end circular groove; The outer ring surface of outer dome that has the plug of the outer dome anchor ring of said inner circular groove of fitting, said inner circular groove is provided with annular taper liner near the anchor ring of outer end circular groove, and the corresponding said annular taper liner of the outer dome of said plug is provided with the inclined-plane of same slope; The end cap lid is loaded on the outer end circular groove of said cylinder body; The outer ring surface of said end cap is close to the anchor ring of said outer end circular groove, and the said end cap rear thread of bolt-through connects the attachment portion of said plug, and the outer ring surface of the attachment portion of said plug is close to the inner ring surface of said auxiliary hole.
It is further characterized in that: be provided with O type circle between the outer ring surface of the attachment portion of said plug and the inner ring surface of said auxiliary hole;
Said annular taper liner is specially the annular taper liner of alloy aluminum.
After adopting said structure of the present invention; High-pressure gas pressure in the heavy pressure gas chamber is pressed in the outer dome of plug in the inner circular groove of cylinder; The annular taper liner fits tightly the inner circular groove of plug, cylinder respectively, accomplishes sealing, and whole sealing configuration is the active sealing configuration: do not rely on the external world and apply pretightening force; The simple structure that relies on self pressure to reach self-locking and realize sealing; It realizes the reliability of high pressure cylinder cavity seal, the Security of use, and total only has higher requirements to the precision of annular taper liner with the inclined-plane of the corresponding said annular taper liner of plug, and other finished surface required precisions are lower; Reduced the processing technology requirement, its Economics of Processing is good.
Description of drawings
Fig. 1 is the structural representation of the sealing means one of existing sealing configuration;
Fig. 2 is the structural representation of the sealing means two of existing sealing configuration;
Fig. 3 is a structural representation of the present invention.
Embodiment
See Fig. 3; It comprises cylinder body 2, heavy pressure gas chamber 6; Auxiliary hole 7 interior edge faces of cylinder body 2, exterior edge face are respectively arranged with inner circular groove 8, outer end circular groove 9; The outer ring surface of outer dome 10 that has the plug 1 of the outer dome anchor ring of inner circular groove 8 of fitting, inner circular groove 8 is provided with annular taper liner 5 near the position of outer end circular groove 9, and the outer dome 10 corresponding annular taper liners 5 of plug 1 are provided with the inclined-plane 11 of same slope; End cap 4 lids are loaded on the outer end circular groove 9 of cylinder body 2; The outer ring surface of end cap 4 is close to the anchor ring of outer end circular groove 9, and bolt 3 runs through the attachment portion 12 that end cap 4 rear threads connect plug 1, and the outer ring surface of the attachment portion 12 of plug 1 is close to the inner ring surface of auxiliary hole 7.Be provided with O type circle 13 between the outer ring surface of the attachment portion 12 of plug 1 and the inner ring surface of auxiliary hole 7; Annular taper liner 5 is specially the annular taper liner of alloy aluminum.
Claims (3)
1. reciprocating-piston compressor high pressure cylinder cavity seal; It comprises cylinder body, heavy pressure gas chamber; It is characterized in that: the auxiliary hole interior edge face of said cylinder body, exterior edge face are respectively arranged with inner circular groove, outer end circular groove; The outer ring surface of outer dome that has the plug of the outer dome anchor ring of said inner circular groove of fitting, said inner circular groove is provided with annular taper liner near the anchor ring of outer end circular groove, and the corresponding said annular taper liner of the outer dome of said plug is provided with the inclined-plane of same slope; The end cap lid is loaded on the outer end circular groove of said cylinder body; The outer ring surface of said end cap is close to the anchor ring of said outer end circular groove, and the said end cap rear thread of bolt-through connects the attachment portion of said plug, and the outer ring surface of the attachment portion of said plug is close to the inner ring surface of said auxiliary hole.
2. reciprocating-piston compressor high pressure cylinder cavity seal according to claim 1 is characterized in that: be provided with O type circle between the outer ring surface of the attachment portion of said plug and the inner ring surface of said auxiliary hole.
3. reciprocating-piston compressor high pressure cylinder cavity seal according to claim 1 and 2 is characterized in that: said annular taper liner is specially the annular taper liner of alloy aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110383926.XA CN102384071B (en) | 2011-11-28 | 2011-11-28 | High-pressure air cylinder chamber seal structure of reciprocating type piston compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110383926.XA CN102384071B (en) | 2011-11-28 | 2011-11-28 | High-pressure air cylinder chamber seal structure of reciprocating type piston compressor |
Publications (2)
| Publication Number | Publication Date |
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| CN102384071A true CN102384071A (en) | 2012-03-21 |
| CN102384071B CN102384071B (en) | 2014-12-10 |
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| CN201110383926.XA Active CN102384071B (en) | 2011-11-28 | 2011-11-28 | High-pressure air cylinder chamber seal structure of reciprocating type piston compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155490A (en) * | 2018-01-10 | 2018-06-12 | 东风商用车有限公司 | Public grounding structure and application method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201884632U (en) * | 2010-12-24 | 2011-06-29 | 石狮市宏企压力容器有限公司 | Vertical type pressure vessel convenient to wash |
| CN201902549U (en) * | 2010-12-23 | 2011-07-20 | 中原特钢股份有限公司 | Novel sealing structure for ultrahigh pressure vessel |
| CN202391683U (en) * | 2011-11-28 | 2012-08-22 | 无锡压缩机股份有限公司 | High-pressure air cylinder chamber seal structure of reciprocating-type piston compressor |
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2011
- 2011-11-28 CN CN201110383926.XA patent/CN102384071B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201902549U (en) * | 2010-12-23 | 2011-07-20 | 中原特钢股份有限公司 | Novel sealing structure for ultrahigh pressure vessel |
| CN201884632U (en) * | 2010-12-24 | 2011-06-29 | 石狮市宏企压力容器有限公司 | Vertical type pressure vessel convenient to wash |
| CN202391683U (en) * | 2011-11-28 | 2012-08-22 | 无锡压缩机股份有限公司 | High-pressure air cylinder chamber seal structure of reciprocating-type piston compressor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155490A (en) * | 2018-01-10 | 2018-06-12 | 东风商用车有限公司 | Public grounding structure and application method thereof |
| CN108155490B (en) * | 2018-01-10 | 2023-05-30 | 东风商用车有限公司 | Public grounding structure and use method thereof |
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| Publication number | Publication date |
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| CN102384071B (en) | 2014-12-10 |
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Address after: 214145 No. 199, xixie Road, Hongshan street, Xinwu District, Wuxi City, Jiangsu Province Patentee after: Shengang Wuxi Compressor Co.,Ltd. Address before: 214145 Jiangsu Wuxi new town Photoelectric Industrial Park 1 Patentee before: WUXI COMPRESSOR Co.,Ltd. |