CN2675902Y - Crosshead of natural gas compressor - Google Patents
Crosshead of natural gas compressor Download PDFInfo
- Publication number
- CN2675902Y CN2675902Y CN 200420032808 CN200420032808U CN2675902Y CN 2675902 Y CN2675902 Y CN 2675902Y CN 200420032808 CN200420032808 CN 200420032808 CN 200420032808 U CN200420032808 U CN 200420032808U CN 2675902 Y CN2675902 Y CN 2675902Y
- Authority
- CN
- China
- Prior art keywords
- crosshead
- alloy
- natural gas
- transition layer
- nickel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000003345 natural gas Substances 0.000 title claims abstract description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000007704 transition Effects 0.000 claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 17
- 239000000956 alloy Substances 0.000 claims abstract description 17
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004411 aluminium Substances 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 abstract 4
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical group [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 abstract 4
- 238000005488 sandblasting Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 230000032798 delamination Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 229910000906 Bronze Inorganic materials 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000010974 bronze Substances 0.000 description 4
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 4
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- GVFOJDIFWSDNOY-UHFFFAOYSA-N antimony tin Chemical group [Sn].[Sb] GVFOJDIFWSDNOY-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 150000002815 nickel Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical group [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Compressor (AREA)
Abstract
The utility model discloses a part for a connecting piston and a connecting rod of a natural gas compressor, namely a crosshead, comprising a body, a transition layer and a friction layer. Wherein, the body surface is a thread surface, and the transition layer is a nickel aluminum alloy. The small pitch of the thread surface of the body is 1. 25 mm, the shallow thread height is 0. 25 mm, the top and the bottom of threads are great circular arcs of 0. 45 mm, and roughness of the surface is Ra25 mu m. Nickel in the nickel aluminum alloy takes 95% of the gross weight of the alloy, and aluminum takes 5% of the gross weight of the alloy. The thread surface is provided with easy sand blasting without blind zone, and while in use, the concentrated stress causing delaminating of the friction surface can not be generated, the mesh degree of the body surface and the friction layer being increased. Adopting the nickel aluminum alloy as the transition layer, the electric spraying art is abridged as well as the bond strength of the nickel aluminum alloy with the body comes up to more than 55 MPa, the problem of the crosshead delaminating being solved, and the quality of the crosshead being considerably improved as well as the rust resistance of the body being improved.
Description
Technical field
The utility model relates to important part in a kind of natural gas compressor, specifically relates to a kind of crosshead of natural gas compressor.
Background technique
In China,, also more and more as the use of the natural gas compressor of natural gas extraction along with the demand of rock gas is increasing.But the also necessary dependence on import of part that some of natural gas compressor are important is as the crosshead of natural gas compressor.
Crosshead is the part that connects piston and connecting rod, and the plane motion of connecting rod is converted into the to-and-fro motion of piston rod, it is to be made of body, transition layer and friction layer, body generally adopts cast iron or cast steel, but because of the mechanical property of cast iron and tensile strength and corrosion resistance and castability all are better than cast steel, so body adopts the more of cast iron; Body surface is processed as common circular shaft surface or dovetail groove usually, when the circular shaft surface is subjected to shearing force, to act directly on the circular shaft surface, the very easy delamination that causes body and friction layer, dovetail groove is then darker because of the degree of depth, not only will waste more expensive alloys, and slot part stays the dead angle easily when sandblast, thereby influence combining of body and friction layer; Transition layer is meant the layer of metal of plating on body, general pure tin, fine copper or the pure zinc of adopting, also has aluminum bronze, but the adhesive strength of these and body is low, can only reach 25Mpa as aluminum bronze, adopts pure tin, fine copper or pure zinc to make transition layer, depositing process is comparatively complicated on it, any one link goes wrong, and all will influence the adhesive strength between they and the body, the very easy situation that causes the friction layer delamination in the using process of crosshead; Friction layer generally adopts cast iron, lead bronze, tin bronze, plumbous antimony bearing metal, tin antimony bearing metal etc., and wherein tin antimony bearing metal performance is best.Crosshead in the course of the work; the principal mode of infringement; also be that the maximum form of harm is friction layer and body generation delamination; this is because associated methods such as the casting process or the deposited method of existing friction layer; all will make the friction layer surface produce eyelet; the friction surface of these eyelets is under the extruding of long-term lubricant oil; will destroy friction layer; if eyelet has reached on the body; to cause delamination between body and the friction layer; because crosshead must guarantee the piston rod of designing requirement and the coaxality of piston axes line in movement process, to avoid leaking and eccentric wear, the crosshead after the delamination will cause piston and cylinder wall eccentric wear; cause local contact heating; increase power consumption; the wearing and tearing aggravation; the natural gas leaking amount is many; disadvantages such as vibrations increase, the serious accident that will cause natural gas compressor to be shut down when serious, obviously; the working life of crosshead is obviously shorter; therefore, improve the quality and the working life of crosshead, prevent that especially it from delamination taking place become the technical problem of being badly in need of solution.In addition, also because of having used cold water, acid solution, alkali lye to handle body, therefore there is the shortcoming of body easy-to-rust in traditional crosshead in the process of electroplating.
Summary of the invention
The purpose of this utility model be to overcome the shortcoming of prior art and provide a kind of body, transition layer and friction layer in conjunction with closely, the crosshead of the natural gas compressor of strong, the long service life of resistant to rust ability.
The purpose of this utility model is achieved in that
A kind of natural gas compressor crosshead is made of body, transition layer and friction layer, and the surface of wherein said body is a thread surface, this thread surface is that fine pitch is 1.25mm, shallow thread height 0.25mm, threaded top and bottom are the orthodrome of 0.45mm, surface roughness is Ra25 μ m;
Wherein, transition layer is a nickel alumin(i)um alloy, and nickel accounts for 95% of alloy gross weight in this nickel alumin(i)um alloy, and aluminium accounts for 5% of alloy gross weight.
The utility model is to make like this: at first thread surface is made on the surface of body, at normal temperatures body is carried out sandblast then, in 1 hour again EFI be coated with the nickel alumin(i)um alloy transition layer, in then 2 hours again EFI be coated with friction layer.The production that traditional process conditions are used for this product suits, and just must be noted that to grasp the above-mentioned time.
The utility model is compared with prior art following advantage:
Because the utility model changes traditional body surface into thread surface, this surface is easy to carry out sand blast, and can not stay the dead angle, and in use can not produce stress and concentrate and cause the friction surface delamination, the while has also increased the engagement degree between body surface and the friction layer; In addition, adopt nickel alumin(i)um alloy, not only simplified, the more important thing is the adhesive strength that has improved with body, adhesive strength is reached more than the 55Mpa, improved the quality of crosshead greatly, solved the delamination problems of crosshead in conjunction with transition layer technology as transition layer; In addition, owing to, avoided making materials such as water, soda acid, the resistant to rust ability of body is strengthened greatly adopting EFI to be coated with technology in conjunction with transition layer and friction layer.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a body surface structural drawing of the present utility model;
Among the figure, body 1, friction layer 2, transition layer 3.
Embodiment
Embodiment: a kind of natural gas compressor crosshead, constitute by body 1, transition layer 3 and friction layer 2, the surface of wherein said body is a thread surface, this thread surface is that fine pitch is 1.25mm, shallow thread height 0.25mm, threaded top and bottom are the orthodrome of 0.45mm, and surface roughness is Ra25 μ m; Transition layer adopts nickel alumin(i)um alloy, and nickel accounts for 95% of alloy gross weight in this nickel alumin(i)um alloy, and aluminium accounts for 5% of alloy gross weight.
Claims (3)
1, a kind of natural gas compressor crosshead, constitute by body (1), transition layer (3) and friction layer (2), the surface that it is characterized in that described body (1) is a thread surface, this thread surface is that fine pitch is 1.25mm, shallow thread height 0.25mm, threaded top and bottom are the orthodrome of 0.45mm, and surface roughness is Ra25 μ m.
2, natural gas compressor crosshead according to claim 1 is characterized in that transition layer (3) is a nickel alumin(i)um alloy.
3, natural gas compressor crosshead according to claim 2 is characterized in that nickel accounts for 95% of alloy gross weight in the nickel alumin(i)um alloy, and aluminium accounts for 5% of alloy gross weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032808 CN2675902Y (en) | 2004-02-13 | 2004-02-13 | Crosshead of natural gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032808 CN2675902Y (en) | 2004-02-13 | 2004-02-13 | Crosshead of natural gas compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2675902Y true CN2675902Y (en) | 2005-02-02 |
Family
ID=34483816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420032808 Expired - Fee Related CN2675902Y (en) | 2004-02-13 | 2004-02-13 | Crosshead of natural gas compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2675902Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912789A (en) * | 2015-06-23 | 2015-09-16 | 山东维尔特石油装备有限公司 | Base body thread type anti-corrosion plunger |
-
2004
- 2004-02-13 CN CN 200420032808 patent/CN2675902Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912789A (en) * | 2015-06-23 | 2015-09-16 | 山东维尔特石油装备有限公司 | Base body thread type anti-corrosion plunger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHENGDU QINGHUA MACHINERY MANUFACTURING CO., LTD. Free format text: FORMER OWNER: HUANG LIANG Effective date: 20070803 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070803 Address after: 610100 No. 899, Beijing Road, Longquanyi District, Sichuan, Chengdu Patentee after: Chengdu Qinghua Machinery Manufacturing Co., Ltd. Address before: 641200 capital of Sichuan Province in the West County town of barosaurus No. 11 unit 1 Building No. 2 Patentee before: Huang Liang |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050202 |