CN101566239B - Valve needle for needle type throttle valve - Google Patents
Valve needle for needle type throttle valve Download PDFInfo
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- CN101566239B CN101566239B CN2009100270160A CN200910027016A CN101566239B CN 101566239 B CN101566239 B CN 101566239B CN 2009100270160 A CN2009100270160 A CN 2009100270160A CN 200910027016 A CN200910027016 A CN 200910027016A CN 101566239 B CN101566239 B CN 101566239B
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Abstract
The invention provides a hard alloy steel part combined valve needle for a needle type throttle valve, which comprises a head part, a connection part and a tail part, wherein the head part is providedwith an inner hole with a shape of an inverted cone; the connection part has a split type structure, the center of the connection part is provided with a through hole, and the upper end of the connec tion part is in a shape of the inverted cone; the cone angle of the upper end of the connection part consists of a cone angle of the inner hole of the head part; the split connection part is spliced into a whole and is arranged in the inner hole of the head part; a stopper rod is pressed into the central through hole of the connection part; the external diameter of the upper end of the connection part and the internal diameter of the inner hole of the head part is in a interference fit, so that the connection part and the head part are connected into a whole; and the lower end of the connection part is connected with the tail end. The connection part and the head part are firmly connected in a mechanical connection mode so that the connection reliability is better; and the head part is made of a hard alloy so as to improve the wear resistance and prolong the service life.
Description
Technical field
The present invention relates to the needle of a kind of petroleum industry with needle-type throttle valve.
Background technique
Petroleum industry generally adopts steel part coated with hard alloy with the needle of needle-type throttle valve, or adopts soldering cemented carbide head etc., and product in use has the upper frequency vibrations, and performance is different, and working life and reliability have nothing in common with each other.Practice shows that number average adopts soldering to connect steel part and cemented carbide part mostly now.
Current, the problem that common soldering steel part and cemented carbide mainly exist has: 1. the intensity of soldering is low; 2. part in use has the vibrations of upper frequency, and the alloy part comes off easily after the soldering; 3. manual welding is generally adopted in soldering, and junction surface is bigger, is not easy to weld full face of weld during welding, and soldering reliability is poor; 4. part is had very high quality requirement, soldering cemented carbide and steel part generally adopt the silver soldering welding, and welding cost is higher.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of cemented carbide steel part combination brake switch and proporting pin that is used for petroleum industry with needle-type throttle valve is provided, can significantly improve operational safety, rely on the pressure of steel and alloy self when it is subjected to pulling force, improve tensile strength.
Purpose of the present invention is achieved through the following technical solutions:
The needle of needle-type throttle valve, comprise head, joint and afterbody, characteristics are: described head is provided with the endoporus of inverted cone, described joint is a split-type structural, the hole is opened at the center of joint, the upper end of joint is inverted cone, the cone angle of joint upper end is consistent with the cone angle of head endoporus, split type joint amalgamation is in one places the endoporus of head, be pressed into stopper in the central through bore of joint, the external diameter of joint upper end and the internal diameter of head endoporus form interference fit, thereby joint and head connect as one; The lower end of described joint is connected with afterbody.
Further, the needle of above-mentioned needle-type throttle valve, wherein, the material of described head is a cemented carbide, and the material of described joint is the 1Cr13 steel, and the material of described stopper is the 1Cr13 steel.
Further, the needle of above-mentioned needle-type throttle valve, wherein, described joint longitudinally equalization is decomposed into 2～6.
Further, the needle of above-mentioned needle-type throttle valve, wherein, described joint longitudinally equalization is decomposed into 3.
Again further, the needle of above-mentioned needle-type throttle valve, wherein, the lower end of described joint adopts thread connecting mode or welding connecting mode to be connected with afterbody.
Again further, the needle of above-mentioned needle-type throttle valve, wherein, the cone angle of described joint upper end is 0.3 °～30 °, correspondingly, the cone angle of head endoporus also is 0.3 °～30 °.
Substantive distinguishing features and obvious improvement that technical solution of the present invention is outstanding are mainly reflected in:
The head of cemented carbide adopts back taper to be connected with the joint of steel, and the central bore that stopper is compressed into joint forms drive fit, thereby mechanicalness connects as one.Joint and head adopt mechanical connection manner, are connected firmly, and connection reliability is better.Because head adopts cemented carbide, has strengthened wear resistance, has improved working life, compare with traditional soldering processes, simplified manufacturing process greatly, produced good economic benefit, can be rated as have novelty, the good technology of creativeness, practicability, application prospect is very good.
Description of drawings
Below in conjunction with accompanying drawing technical solution of the present invention is described further:
Fig. 1: structural representation of the present invention;
Fig. 2: among Fig. 1 along the cross-sectional schematic of A-A.
The implication of each reference character is among the figure:
The 1-head, 2-joint, 3-stopper, 4-afterbody.
Embodiment
As shown in Figure 1, the needle of needle-type throttle valve, comprise head 1, joint 2, stopper 3 and afterbody 4, head 1 is provided with the endoporus of inverted cone, joint 2 is a split-type structural, usually longitudinally equalization is decomposed into 2～6, as Fig. 2, joint longitudinally equalization is decomposed into 3, and the hole is opened at the center of joint 2, and the upper end of joint 2 is inverted cone, the cone angle of joint upper end is consistent with the cone angle of head endoporus, the cone angle of joint upper end is 0.3 °～30 °, and correspondingly, the cone angle of head endoporus also is 0.3 °～30 °.Split type joint amalgamation is in one places the endoporus of head, and the external diameter on the stopper 3 of packing in the central through bore of joint 2, joint and the internal diameter of head endoporus form interference fit, thereby joint and head connect as one; The lower end of joint 2 adopts thread connecting mode or welding connecting mode to be connected with afterbody 4.
During concrete the manufacturing, the material of head 1 adopts cemented carbide, and the material of joint 2 adopts the 1Cr13 steel, and the material of stopper 3 adopts the 1Cr13 steel.Head 1 adopts cemented carbide, has strengthened wear resistance, has improved life of product.Joint 2 adopts mechanical connection manner with head 1, is connected firmly, and connection reliability is better.In addition, because cemented carbide and steel part mechanical connection have also reduced cost of goods manufactured, connection does not come off.
The head of cemented carbide adopts conventional cemented carbide making method, and the steel joint adopts the processing of conventional mechanical processing method, compares with traditional soldering processes, has simplified manufacturing process greatly.
Can show that the present invention designs uniqueness, novel structure, rely on the pressure of steel and alloy self when it is subjected to pulling force, improve tensile strength.Connect very firmly, strengthened the reliability of using, reduced the risk in using, also greatly reduce manufacture cost simultaneously, economic benefit and social effect are remarkable, are worth wide popularization and application in the field of business.
It is emphasized that: above only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (6)
1. the needle of needle-type throttle valve, comprise head, joint and afterbody, it is characterized in that: described head is provided with the endoporus of inverted cone, described joint is a split-type structural, the hole is opened at the center of joint, the upper end of joint is inverted cone, the cone angle of joint upper end is consistent with the cone angle of head endoporus, split type joint amalgamation is in one places the endoporus of head, be pressed into stopper in the central through bore of joint, the external diameter of joint upper end and the internal diameter of head endoporus form interference fit, thereby joint and head connect as one; The lower end of described joint is connected with afterbody.
2. the needle of needle-type throttle valve according to claim 1, it is characterized in that: the material of described head is a cemented carbide, and the material of described joint is the 1Cr13 steel, and the material of described stopper is the 1Cr13 steel.
3. the needle of needle-type throttle valve according to claim 1 is characterized in that: described joint is decomposed into 2～6 along circumferential equalization.
4. the needle of needle-type throttle valve according to claim 3 is characterized in that: described joint is decomposed into 3 along circumferential equalization.
5. the needle of needle-type throttle valve according to claim 1 is characterized in that: the lower end of described joint adopts thread connecting mode or welding connecting mode to be connected with afterbody.
6. the needle of needle-type throttle valve according to claim 1 is characterized in that: the cone angle of described joint upper end is 0.3 °～30 °, and correspondingly, the cone angle of head endoporus also is 0.3 °～30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100270160A CN101566239B (en) | 2009-05-22 | 2009-05-22 | Valve needle for needle type throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100270160A CN101566239B (en) | 2009-05-22 | 2009-05-22 | Valve needle for needle type throttle valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101566239A CN101566239A (en) | 2009-10-28 |
| CN101566239B true CN101566239B (en) | 2011-01-12 |
Family
ID=41282546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100270160A Active CN101566239B (en) | 2009-05-22 | 2009-05-22 | Valve needle for needle type throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101566239B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046897B (en) * | 2012-12-20 | 2015-06-03 | 西南石油大学 | Valve needle of automatic adjusting throttle valve for pressure control drilling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3262673A (en) * | 1964-03-24 | 1966-07-26 | Joseph Dixon Crucible Co | Stopper rod assembly |
| EP0279103A2 (en) * | 1987-02-18 | 1988-08-24 | Cooper Industries, Inc. | Choke and improved needle tip therefor |
| CN2876320Y (en) * | 2006-04-02 | 2007-03-07 | 兰州天智机械有限公司 | Throttle valve of gas production well |
| CN101311586A (en) * | 2007-09-29 | 2008-11-26 | 赵春惠 | Never-leakage valve |
| CN101328978A (en) * | 2008-07-23 | 2008-12-24 | 江苏金石油气井口科技有限公司 | Half-type connecting apparatus of needle type throttling valve |
-
2009
- 2009-05-22 CN CN2009100270160A patent/CN101566239B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3262673A (en) * | 1964-03-24 | 1966-07-26 | Joseph Dixon Crucible Co | Stopper rod assembly |
| EP0279103A2 (en) * | 1987-02-18 | 1988-08-24 | Cooper Industries, Inc. | Choke and improved needle tip therefor |
| CN2876320Y (en) * | 2006-04-02 | 2007-03-07 | 兰州天智机械有限公司 | Throttle valve of gas production well |
| CN101311586A (en) * | 2007-09-29 | 2008-11-26 | 赵春惠 | Never-leakage valve |
| CN101328978A (en) * | 2008-07-23 | 2008-12-24 | 江苏金石油气井口科技有限公司 | Half-type connecting apparatus of needle type throttling valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101566239A (en) | 2009-10-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Owner name: SUZHOU SHAREATE ALLOY TOOL CO., LTD. Free format text: FORMER OWNER: SUZHOU KINGDREAM SHAREATE CEMENTED CARBIDE CO., LTD. Effective date: 20120816 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120816 Address after: 215121, No. 6, West Road, Ting Technology Park, Suzhou Industrial Park, Jiangsu Patentee after: Suzhou Xinrui Alloy Tool Co.,Ltd. Address before: 215121, No. 6, West Road, Ting Technology Park, Suzhou Industrial Park, Jiangsu Patentee before: Suzhou KINGDREAM SHAREATE Cemented Carbide Co., Ltd. |