CN103410699B - A kind of piston rod of hollow double helix cooling channel structure - Google Patents
A kind of piston rod of hollow double helix cooling channel structure Download PDFInfo
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- CN103410699B CN103410699B CN201310292013.6A CN201310292013A CN103410699B CN 103410699 B CN103410699 B CN 103410699B CN 201310292013 A CN201310292013 A CN 201310292013A CN 103410699 B CN103410699 B CN 103410699B
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- piston rod
- core bar
- spiral core
- twin channel
- water outlet
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Abstract
A piston rod for hollow double helix cooling channel structure, comprises Twin channel spiral core bar, hollow piston rod, piston mouth end socket, cross draught animals end socket, water inlet connection, water outlet joint.Twin channel spiral core bar and hollow piston rod elastic conjunction combine, piston mouth end socket is encapsulated in piston mouth one end of Twin channel spiral core bar and hollow piston rod combination, water inlet connection and water outlet joint and cross draught animals end socket are assembled into one, be arranged on cross draught animals one end of Twin channel spiral core bar and hollow piston rod combination, and water inlet connection is communicated with the Twin channel of water outlet joint with Twin channel spiral core bar.The present invention is a kind of piston rod of composite structure, working life improves greatly, through going into operation on different types of machines, use certificate bright invented piston rod brings up to 20000 hours in 15000 hours from primitive form working life, so just makes to use the compressor bank repair cycle of institute's invention piston rod to become 2 years once by 3 years secondaries.
Description
Technical field
The present invention relates to Machine Design and manufacture field, particularly a kind of for reciprocating process compressor, the piston rod that can lead to the hollow double helix cooling channel structure of cooling medium.
Background technique
Piston rod is the important assembly of reciprocating compressor, and the workpiece piston of compressor is connected with bent axle, connecting rod by piston rod, thus realizes compressor suction and discharge and pressurization.In compressor assembly equipment running process, piston rod stress is very complicated, but what play a major role is bear tensile stress and pressure stress, and there are three place's (see figure 1)s its typical force part.
place is and crosshead point of attachment,
place is and piston point of attachment,
place is the intermediate portion of piston rod length direction.For the first force part, place of piston rod, mainly consider to ensure join strength problem under the condition of normal temperature, this technology is ripe at present; For the second force part, place of piston rod, the strength problem considering to ensure to be connected with piston equally, but consider that temperature affects problem simultaneously, all metal because piston, piston rod and Piston connecting portion divide, usually piston rod does not carry out amorphisation, even if need screw thread enhancement process, what done is all Crystallizing treatment, this part temperature of piston rod is substantially identical with piston temperature, and the interaction of join strength problem by being connected with piston, linking intensity and reliability can be ensured completely technically.Therefore the current problem larger from technological means intractability solves intensity, stability and integrity problem in the middle part of piston rod, the particularly piston rod that adopts of air displacement and the larger large-scale or super sized type reciprocating compressor of piston force, the strength and stability sex chromosome mosaicism in the middle part of it becomes and develops one of super sized type reciprocating compressor main restricting factor.As developing of 6M150 series reciprocating compressor.
Main by tension and compression alternate load, its failure mode has two kinds to piston rod, and one is axial weak part fatigue damage working in compressor, and two is that the piston rod of compression chord can cause piston rod to lose efficacy because there is slender compression bar stability problem, as shown in Figure 2:
Piston rod no matter which kind of disabling damage, all can make whole compressor assembly device damage and paralysis, and the direct result brought is that process system large size stops production and occurs personnel's injury accident, according to statistics, once there is such accident, economic loss just can reach 1,000,000, even up to ten million.
No matter piston rod is that fatigue damage or slender compression bar stability problem occur, all cause the ultimate strength of material to reduce and the wearing and tearing of bar footpath expansion aggravation piston rod because operating temperature raises, thus make piston rod generation permanent plastic deformation and lost efficacy, solve piston rod problem of temperature rise is key point of the present invention for this reason.
Summary of the invention
For piston rod temperature rise cause fatigue damage and the eventual failure problem that causes of slender compression bar stability, the present invention designs a kind of piston rod of hollow double helix cooling channel structure.
The technological scheme adopted is:
A piston rod for hollow double helix cooling channel structure, comprises Twin channel spiral core bar, hollow piston rod, piston mouth end socket, cross draught animals end socket, water inlet connection, water outlet joint.
Described Twin channel spiral core bar and hollow piston rod elastic conjunction combine, piston mouth end socket is encapsulated in piston mouth one end of Twin channel spiral core bar and hollow piston rod combination, water inlet connection and water outlet joint and cross draught animals end socket are assembled into one, assembling all-in-one-piece water inlet connection, water outlet joint and cross draught animals end socket are arranged on cross draught animals one end of Twin channel spiral core bar and hollow piston rod combination, and water inlet connection is communicated with the Twin channel of water outlet joint with Twin channel spiral core bar.
The helix angle of above-mentioned Twin channel spiral core bar adopts 52 °.
The Twin channel of above-mentioned Twin channel spiral core bar is set as cooling water and enters a road water inlet helical duct of spiral core bar by water intake and cooling water flows out another road water outlet helical duct of spiral core bar by water outlet.
Intake in above-mentioned Twin channel spiral core bar helical duct and water outlet helical duct Twin channel between be provided with passage flowing hole.
The present invention is a kind of piston rod of composite structure, working life improves greatly, through going into operation on different types of machines, use certificate bright invented piston rod brings up to 20000 hours in 15000 hours from primitive form working life, so just makes to use the compressor bank repair cycle of institute's invention piston rod to become 2 years once by 3 years secondaries.
Accompanying drawing explanation
Fig. 1 is piston rod typical force part schematic diagram.
Fig. 2 is that piston rod is tired, slender compression bar stability disabling damage figure.
Fig. 3 is structural representation of the present invention.
Embodiment
A piston rod for hollow double helix cooling channel structure, comprises Twin channel spiral core bar 4, hollow piston rod 3, piston mouth end socket 6, cross draught animals end socket 7, water inlet connection 1, water outlet joint 2.The Twin channel of described Twin channel spiral core bar 4 is set as cooling water and enters a road water inlet helical duct of spiral core bar by water intake and cooling water flows out another road water outlet helical duct of spiral core bar by water outlet; Passage flowing hole 5 is provided with between water inlet helical duct and the Twin channel of water outlet helical duct; Helix angle adopts 52 °, and Material selec-tion is nickeliferous, the stainless steel of manganese, adopts casting hair Bear-grudge, more machining.Described Twin channel spiral core bar 4 combines with hollow piston rod 3 elastic conjunction.Described piston mouth end socket 6 is encapsulated in piston mouth one end of Twin channel spiral core bar and hollow piston rod combination, water inlet connection 1 and water outlet joint 2 are assembled into one with cross draught animals end socket 7, assembling all-in-one-piece water inlet connection 1, water outlet joint 2 and cross draught animals end socket 7 are arranged on cross draught animals one end of Twin channel spiral core bar and hollow piston rod combination, and water inlet connection 1 is communicated with the Twin channel of water outlet joint 2 with Twin channel spiral core bar 7.Piston mouth one end of hollow piston rod is connected with piston, and cross draught animals one end is connected with crosshead by groove.Water inlet connection 1 is connected intake pipe and outlet pipe with water outlet joint 2 respectively by high tenacity flexible pipe, follows piston rod movement and carries out circulation water flowing cooling, forms a kind of piston rod of hollow double helix cooling channel structure.
Working principle
The double helix cooling channel that hollow piston rod forms for main body.Cooling water enters a road helical duct of spiral core bar by water intake, flows through channel via holes 5 and enters another road helical duct, flows out, thus realize the effect of cooling piston bar from water outlet.
Claims (1)
1. the piston rod of a hollow double helix cooling channel structure, comprise Twin channel spiral core bar (4), hollow piston rod (3), piston mouth end socket (6), cross draught animals end socket (7), water inlet connection (1), water outlet joint (2), it is characterized in that described Twin channel spiral core bar (4) and hollow piston rod (3) elastic conjunction combine, piston mouth end socket (6) is encapsulated in piston mouth one end of Twin channel spiral core bar and hollow piston rod combination, water inlet connection (1) and water outlet joint (2) are assembled into one with cross draught animals end socket (7), all-in-one-piece water inlet connection (1) will be assembled, water outlet joint (2) and cross draught animals end socket (7) are arranged on cross draught animals one end of Twin channel spiral core bar and hollow piston rod combination, and water inlet connection (1) is communicated with the Twin channel of water outlet joint (2) with Twin channel spiral core bar (4), the helix angle of described Twin channel spiral core bar adopts 52 °, hollow piston rod Material selec-tion is nickeliferous, the stainless steel of manganese, the Twin channel of described Twin channel spiral core bar (4) is set as cooling water and enters a road water inlet helical duct of spiral core bar by water intake and cooling water flows out another road water outlet helical duct of spiral core bar by water outlet, passage flowing hole (5) is provided with between water inlet helical duct and water outlet helical duct in described Twin channel spiral core bar (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310292013.6A CN103410699B (en) | 2013-07-12 | 2013-07-12 | A kind of piston rod of hollow double helix cooling channel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310292013.6A CN103410699B (en) | 2013-07-12 | 2013-07-12 | A kind of piston rod of hollow double helix cooling channel structure |
Publications (2)
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| CN103410699A CN103410699A (en) | 2013-11-27 |
| CN103410699B true CN103410699B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310292013.6A Active CN103410699B (en) | 2013-07-12 | 2013-07-12 | A kind of piston rod of hollow double helix cooling channel structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU947465A1 (en) * | 1980-11-21 | 1982-07-30 | Омский политехнический институт | Piston refrigerator compressor |
| CN2133717Y (en) * | 1992-06-28 | 1993-05-19 | 关俊彦 | Piston rod |
| CN2349383Y (en) * | 1998-03-21 | 1999-11-17 | 马剑 | Piston rod cooling means |
| CN1766330A (en) * | 2005-11-19 | 2006-05-03 | 无锡压缩机股份有限公司 | Oil cooling structure for piston rod of piston compressor |
| CN202732928U (en) * | 2012-08-27 | 2013-02-13 | 宁波市鄞州行健轴业有限公司 | Piston rod |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63215884A (en) * | 1987-03-05 | 1988-09-08 | Ishikawajima Harima Heavy Ind Co Ltd | Piston rod cooling device |
| US7219594B2 (en) * | 2003-06-06 | 2007-05-22 | S.P.M. Flow Control, Inc. | Coolant system for piston and liner of reciprocating pumps |
-
2013
- 2013-07-12 CN CN201310292013.6A patent/CN103410699B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU947465A1 (en) * | 1980-11-21 | 1982-07-30 | Омский политехнический институт | Piston refrigerator compressor |
| CN2133717Y (en) * | 1992-06-28 | 1993-05-19 | 关俊彦 | Piston rod |
| CN2349383Y (en) * | 1998-03-21 | 1999-11-17 | 马剑 | Piston rod cooling means |
| CN1766330A (en) * | 2005-11-19 | 2006-05-03 | 无锡压缩机股份有限公司 | Oil cooling structure for piston rod of piston compressor |
| CN202732928U (en) * | 2012-08-27 | 2013-02-13 | 宁波市鄞州行健轴业有限公司 | Piston rod |
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| Publication number | Publication date |
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| CN103410699A (en) | 2013-11-27 |
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Effective date of registration: 20191107 Address after: 110004 Canghai Road, Shenyang Economic and Technological Development Zone, Shenyang City, Liaoning Province Patentee after: Shenyang Yuanda Compressor Co., Ltd. Address before: 110159 Liaoning Province, Shenyang Hunnan New District Nanping Road No. 6 Patentee before: Shenyang Univ. of Science and Engineering |