CN201297250Y - A split compressor piston body - Google Patents
A split compressor piston body Download PDFInfo
- Publication number
- CN201297250Y CN201297250Y CNU2008202276016U CN200820227601U CN201297250Y CN 201297250 Y CN201297250 Y CN 201297250Y CN U2008202276016 U CNU2008202276016 U CN U2008202276016U CN 200820227601 U CN200820227601 U CN 200820227601U CN 201297250 Y CN201297250 Y CN 201297250Y
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- Prior art keywords
- piston body
- piston
- rod hole
- semi
- right half
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- Expired - Fee Related
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Abstract
A split compressor piston body is suitable for the improvement of a large-scale nitrogen-hydrogen gas compressor piston body, which is aimed at facilitating casting molding without plugging. The piston body comprises a left semi-piston body and a right semi-piston body; both of the left semi-piston body and the right semi-piston body are provided with a piston rod hole and a piston body cavity; in the inner side of the left semi-piston body and the right semi-piston body, the positions of the piston rod hole and the piston body cavity are mutually corresponding. The outer side of the left semi-piston body where is corresponding to the piston rod hole is provided with a piston nut hole; the outer side of the right semi-piston body where is corresponding to the piston rod hole is provided with a piston body step; the external cylindrical end faces of the left semi-piston body and the right semi-piston body are provided with a support ring groove and a piston ring groove; and the joint of the left semi-piston body and the right semi-piston body is provided with a connection seam allowance.
Description
Technical field
The utility model relates to a kind of improvement of nitrogen-hydrogen compressor piston body structure.
Background technique
Nitrogen-hydrogen compressor is a fertilizer enterprises equipment commonly used, adopts the one-piece piston body structure usually.For alleviating piston body weight, during manufacturing the piston body cast inside is become hollow-core construction, both ends of the surface connect with stiffening rib, to increase piston body intensity; Sand removal for convenience has many and removes sand holes between piston body both ends of the surface stiffening rib during casting, clear up to process screw thread behind the model sand and block with plug.Because when piston body normally moves, bear bigger piston force, screw thread is easy to generate fatigue, cause plug loosening, fall in the cylinder, cause piston rod to break, the cylinder liner plucking, the pressure body parts are badly damaged.Influence the safe and stable operation of compressor.
Summary of the invention
The utility model purpose overcomes above-mentioned the deficiencies in the prior art exactly, and a kind of piston is provided is two halves formula structure, be convenient to cast molding, do not need the split type compressor piston body of plug shutoff.
The utility model comprises left half piston body and right half piston body.Be equipped with piston rod hole and piston body cavity on left and right half piston body, in left and right half piston body inboard, piston rod hole and piston body empty cavity position are corresponding mutually; The half piston body outside, a left side is provided with the piston unt hole with corresponding part, piston rod hole site, and the right half piston body outside is provided with the piston body step with corresponding part, piston rod hole site; On the cylindrical end face of left and right half piston body, be provided with and support annular groove and piston ring groove; Be used to install support ring or piston ring, be provided with the connection seam in the joint of left and right half piston body.
The utility model is suitable for the transformation of large-scale nitrogen-hydrogen compressor piston body.The utility model adopts the two halves split type structure, is convenient to cast molding, and model sand can thoroughly be cleaned out, and does not need the technology plug, casts, processes convenient.Reduce maintenance expenses and maintenance man's labor intensity, reduced the startup-shutdown number of times, prolonged the safe and stable operation cycle of compressor.Eliminated compressor stable operation hidden danger, for the safe long period full production of system provides sound assurance.
Description of drawings
Fig. 1 is the utility model structural representation.
1, piston body step, 2, the piston unt hole, 3, left half piston body, 4, connect seam, 5, support annular groove, 6, piston ring groove, 7, right half piston body, 8, the piston body cavity, 9, the piston rod hole.
Embodiment
When a left side half piston body 3 and right half piston body 7 lump together, half piston body 3 and right half piston body 7 inboards on a left side, the position of piston rod hole 9 and piston body cavity 8 can be mutually to being in the same place, thereby make left half piston body 3 and right half piston body 7 synthetic as a whole.Add and between the two halves piston end surface, to leave certain interference clearance man-hour.Excesssive gap then is easy to generate stress and concentrates, and long operational time can cause two halves piston body crackle.Two halves piston body end face connects between the seam machined burrs and should clean out during installation.
The utility model is particularly suitable for 6M50-309/320 type nitrogen-hydrogen compressor piston body structure is improved.There are three 6M50-309/320 type nitrogen-hydrogen compressors in Shanxi orchid grouping of the world economy nutriment in a fertilizer company, and install in October, 2003, and in August, 2006, the plug on the 3# compressor piston body is fallen into and caused piston rod to break in the cylinder, the cylinder liner plucking, and the pressure body parts are badly damaged.Have two plugs on the 2# compressor piston body to fall in the cylinder in September, 2006 again, causes piston rod to be broken.Then check 1# compressor piston body, find to have three plugs loosening.This phenomenon has greatly influenced the steady production of system.Adopt the utility model structure that the piston body of above-mentioned three compressors is transformed, by nearly 2 years operation, compressor operating is stable, and each parts operation is normal, and equipment failure does not together take place.
Claims (2)
1, a kind of split type compressor piston body is characterized in that comprising left half piston body and right half piston body; Be equipped with piston rod hole and piston body cavity on left and right half piston body, in left and right half piston body inboard, piston rod hole and piston body empty cavity position are corresponding mutually; The half piston body outside, a left side is provided with the piston unt hole with corresponding part, piston rod hole site, and the right half piston body outside is provided with the piston body step with corresponding part, piston rod hole site; On the cylindrical end face of left and right half piston body, be provided with and support annular groove and piston ring groove; Be provided with the connection seam in the joint of left and right half piston body.
2, split type compressor piston body as claimed in claim 1 is characterized in that the connection seam on left half piston body is a groove, and the connection seam on right half piston body is a projection; On the cylindrical end face of a left side half piston body, be provided with one and support annular groove and three piston ring grooves; On the cylindrical end face of the right side half piston body, be provided with two and support annular groove and three piston ring grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202276016U CN201297250Y (en) | 2008-11-20 | 2008-11-20 | A split compressor piston body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202276016U CN201297250Y (en) | 2008-11-20 | 2008-11-20 | A split compressor piston body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201297250Y true CN201297250Y (en) | 2009-08-26 |
Family
ID=41043229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202276016U Expired - Fee Related CN201297250Y (en) | 2008-11-20 | 2008-11-20 | A split compressor piston body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201297250Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806477A (en) * | 2015-05-04 | 2015-07-29 | 无锡压缩机股份有限公司 | Cast aluminum piston structure for reciprocating compressor |
-
2008
- 2008-11-20 CN CNU2008202276016U patent/CN201297250Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806477A (en) * | 2015-05-04 | 2015-07-29 | 无锡压缩机股份有限公司 | Cast aluminum piston structure for reciprocating compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20111120 |