CN204922048U - Choke valve valve rod - Google Patents
Choke valve valve rod Download PDFInfo
- Publication number
- CN204922048U CN204922048U CN201520745724.9U CN201520745724U CN204922048U CN 204922048 U CN204922048 U CN 204922048U CN 201520745724 U CN201520745724 U CN 201520745724U CN 204922048 U CN204922048 U CN 204922048U
- Authority
- CN
- China
- Prior art keywords
- rod
- cone
- cannelure
- throttle valve
- valve
- 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
Abstract
The utility model discloses a choke valve valve rod, including the cone and the body of rod, its characterized in that the integral type is provided with outer ring channel and outer cannelure on the outer face of cylinder of body of rod tip, be provided with the cavity that body of rod cooperation was used in the cone, it is provided with interior ring channel and interior cannelure to correspond position department on the cavity inner wall. The utility model has the advantages of reasonable design, through cup joint the cone how to set up the body of rod on, when high -frequency vibration and reversal loading, what hold the loading lotus is the stainless steel body of rod, and the stainless steel is plastic material, has fine anti fatigue strength, consequently, the holistic anti fatigue strength of valve rod obtains the large increase.
Description
Technical field
The utility model belongs to throttle valve technology field, is specifically related to a kind of throttle valve stem.
Background technique
Throttle valve is applied very extensive in the every fluid operation in oil field, and the Flow-rate adjustment or the pressure that are mainly used in fluid regulate, and are requisite fluid control elements in drilling well, oil and gas well testing.In operation, by rotation hand wheel, make throttle valve stem move axially to regulate the area of throttle orifice, thus change pressure and the flow of fluid in pipeline, to obtain required fluid parameter.Therefore, the performance of throttle valve directly has influence on the quality of throttling service.
The critical component of needle-type throttle valve is valve rod and valve seat, and wherein valve rod is the most flimsy parts.At present, needle-type throttle valve valve rod the most frequently used is both at home and abroad carbide inserts valve rod, its structure is that the stainless steel body of rod and cemented carbide cone are welded, be mostly key slot type welded structure, or adopting end face welded structure, the valve rod of this kind of vibrational power flow easily occurs that cone and the body of rod come off, and causes throttle valve normally to work, even block throttling passage, cause serious accident.
Model utility content
For problems of the prior art, the purpose of this utility model is that design provides a kind of throttle valve stem.
Described a kind of throttle valve stem, comprise cone and the body of rod, it is characterized in that on described rod end external cylindrical surface, integral type is provided with outer annular groove and outer cannelure, be provided with in described cone with the body of rod with the use of cavity, on described cavity inner wall, corresponding position is provided with interior circular groove and interior cannelure.
Described a kind of throttle valve stem, is characterized in that described cavity depth 1.5-2.5mm more than rod end outer cylinder length.
Described a kind of throttle valve stem, it is characterized in that outer annular groove and interior circular groove are provided with 2-3, described outer cannelure and interior cannelure are provided with two, and two outer cannelures are symmetrical arranged, and in two, cannelure is symmetrical arranged.
Described a kind of throttle valve stem, is characterized in that described cavity depth 2mm more than rod end outer cylinder length.
The utility model reasonable in design, by cone socket being arranged how on the body of rod, when dither and alternate load effect, bearing load be the stainless steel body of rod, and stainless steel is plastic material, has good fatigue resistance, therefore, the fatigue resistance of valve rod entirety is greatly improved.
Accompanying drawing explanation
Fig. 1 is the utility model using state schematic diagram;
Fig. 2 is bar structure schematic diagram;
Fig. 3 is cone structure schematic diagram;
In figure: 1-cone, the 2-body of rod, 3-outer annular groove, the outer cannelure of 4-, circular groove in 5-, cannelure in 6-.
Embodiment
The utility model is further illustrated below in conjunction with Figure of description.
As Figure 1-3, a kind of throttle valve stem of the utility model, comprise cone 1 and the body of rod 2, on the external cylindrical surface of the body of rod 2 end, integral type is provided with outer annular groove 3 and outer cannelure 4, be provided with in cone 1 with the body of rod 2 with the use of cavity, on cavity inner wall, corresponding position is provided with interior circular groove 5 and interior cannelure 6, outer annular groove 3 and interior circular groove 5 are provided with 2-3, outer cannelure 4 and interior cannelure 6 are provided with two, and two outer cannelures are symmetrical arranged, and in two, cannelure is symmetrical arranged.Cavity depth 1.5-2.5mm, the most promising 2mm more than rod end outer cylinder length.
The body of rod of the utility model valve rod and cone are by being welded, during welding, first by brazing aqueous fusion in cone 1 cavity, slowly insert in cone 1 after then the outer cannelure 4 of the body of rod 2 being alignd with cannelure 6 in cone 1, insert at the body of rod 2 in the process of cone 1, weldering water fills outer annular groove 3 and interior circular groove 5 gradually, meanwhile, unnecessary weldering water is along outer cannelure 4 and interior cannelure 6 to external outflow, until the body of rod 2 is fitted completely with the end face of cone 1, then be incubated, eliminate stress.Now, form copper ring, two longitudinal copper posts and a cylindrical bottom face of weld therein, thus the body of rod 2 and cone 1 are welded together firmly.The copper ring formed limits the axial freedom of cone 1, and longitudinal copper post then limits the rotary freedom of cone 1.Because cone 1 is enclosed within the body of rod 2, when dither and alternate load effect, bearing load be the stainless steel body of rod, and stainless steel is plastic material, has good fatigue resistance, and therefore, the fatigue resistance of valve rod entirety is greatly improved.In addition, because face of weld is placed in cemented carbide cone inside, not with fluid contact, thus the destruction avoided because fluid scouring causes, copper ring and copper post have certain toughness, in dither process simultaneously, also can play certain buffer function, thus greatly reduce the spoilage of valve rod.
Claims (4)
1. a throttle valve stem, comprise cone (1) and the body of rod (2), it is characterized in that on the external cylindrical surface of the described body of rod (2) end, integral type is provided with outer annular groove (3) and outer cannelure (4), be provided with in described cone (1) with the body of rod (2) with the use of cavity, on described cavity inner wall, corresponding position is provided with interior circular groove (5) and interior cannelure (6).
2. a kind of throttle valve stem as claimed in claim 1, is characterized in that described cavity depth 1.5-2.5mm more than the body of rod (2) end outer cylinder length.
3. a kind of throttle valve stem as claimed in claim 1, it is characterized in that outer annular groove (3) and interior circular groove (5) are provided with 2-3, described outer cannelure (4) and interior cannelure (6) are provided with two, and two outer cannelures are symmetrical arranged, and in two, cannelure is symmetrical arranged.
4. a kind of throttle valve stem as claimed in claim 2, is characterized in that described cavity depth 2mm more than the body of rod (1) end outer cylinder length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745724.9U CN204922048U (en) | 2015-09-24 | 2015-09-24 | Choke valve valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745724.9U CN204922048U (en) | 2015-09-24 | 2015-09-24 | Choke valve valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204922048U true CN204922048U (en) | 2015-12-30 |
Family
ID=54971177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520745724.9U Expired - Fee Related CN204922048U (en) | 2015-09-24 | 2015-09-24 | Choke valve valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204922048U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282082A (en) * | 2018-11-23 | 2019-01-29 | 潜江新锐硬质合金工具有限公司 | A kind of needle-type throttle valve valve rod and its processing and forming technology |
-
2015
- 2015-09-24 CN CN201520745724.9U patent/CN204922048U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282082A (en) * | 2018-11-23 | 2019-01-29 | 潜江新锐硬质合金工具有限公司 | A kind of needle-type throttle valve valve rod and its processing and forming technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20160924 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |