CN203297641U - Adjustable throttle valve rod - Google Patents
Adjustable throttle valve rod Download PDFInfo
- Publication number
- CN203297641U CN203297641U CN2013202777966U CN201320277796U CN203297641U CN 203297641 U CN203297641 U CN 203297641U CN 2013202777966 U CN2013202777966 U CN 2013202777966U CN 201320277796 U CN201320277796 U CN 201320277796U CN 203297641 U CN203297641 U CN 203297641U
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- China
- Prior art keywords
- valve rod
- valve
- adjustable throttle
- cavity
- throttle valve
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Abstract
The utility model relates to the technical field of valve rods, in particular to an adjustable throttle valve rod. The adjustable throttle valve rod comprises a valve rod body and a valve head connected with the valve rod body. The valve head is a cone-shaped body with a cavity. The front end of the valve rod body is provided with an inserting part matched with the cavity, and the inserting part is used for being inserted into the cavity. A steel ball is arranged between the inserting part and the inner wall of the cavity. The adjustable throttle valve rod not only has the necessary advantages of being high in hardness, good in abrasive resistance and red hardness and the like, but also has the advantages of being high in strength, good in tenacity and even in stress. The root of the valve rod body can bear large impact when the valve rod is subjected from flushing of high-speed sand fluid and an alternating load.
Description
Technical field
The utility model relates to the petroleum machinery technical field, is specifically related to a kind of adjustable throttle valve valve rod that a kind of petroleum machinery is used.
Background technique
A kind of adjustable throttle valve is applied very extensive in the every fluid operation in oil field, the Flow-rate adjustment or the pressure that are mainly used in fluid are regulated, and is requisite fluid control elements in drilling well, Oil/gas Well test.In operation, by the valve rod that makes throttle valve, move axially the area of adjusting joint discharge orifice, thereby change pressure and the flow of fluid in pipeline, to obtain required fluid parameter.Therefore, the throttle valve performance directly has influence on the quality of throttling operation.A kind of critical component of adjustable throttle valve is valve rod and valve seat, and wherein, valve rod is the most flimsy parts.Valve rod inefficacy main manifestations is that cone and the body of rod come off (cone fracture), causes throttle valve to work, and even stops up throttling passage, causes serious accident.
At present, the valve rod of the most frequently used adjustable throttle valve is the valve rod of carbide inserts head both at home and abroad, and its structure is that the stainless steel body of rod and cemented carbide cone are welded.Because present throttle valve stem structure is unreasonable, and throttle valve is worked under high pressure, large flow rate working conditions, cemented carbide cone place will be subject to containing at a high speed the effect of the washing away of sand flow body, alternate load and be attended by dither, therefore, be easy to cause cemented carbide cone and the stainless steel body of rod come off or rupture.
The model utility content
The purpose of this utility model is to provide a kind of adjustable throttle valve valve rod in order to overcome shortcoming of the prior art, be intended to solve the cone of existing adjustable throttle valve and the valve rod body of rod easily comes off and easily the fracture, cause throttle valve to work, even stop up throttling passage, cause the technical problem of serious accident.
For achieving the above object, the technological scheme that adopts of the utility model is as follows:
A kind of adjustable throttle valve valve rod, comprise valve stem body and the valve head that is connected with described valve stem body; Described valve head is the taper with cavity, the front end of described valve stem body have with described cavity, match be used to inserting the insertion part in described cavity, between described insertion part and described cavity inner wall, be laid with steel ball.
After described steel ball is placed in the described cavity of described insertion part insertion and in the annular alley that forms between the inwall of described cavity.
Described valve head is provided with the through hole that is connected with described annular alley, in described through hole, is provided with the sealing welding block.
The utility model adjustable throttle valve valve rod not only has the necessary characteristics such as hardness is high, wear resistance good, red hardness is good, and intensity is high, good toughness, stressed even; At valve rod, be subjected to contain at a high speed the used time of doing of the washing away of sand flow body, alternate load, the valve stem body root can bear larger impact.
The accompanying drawing explanation
Figure 1 shows that the structural representation of the adjustable throttle valve valve rod that the utility model provides;
In figure: 1, valve stem body, 2, steel ball, 3, valve head, 4, the sealing welding block.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is further elaborated.
Referring to Fig. 1, the figure shows the structure of a kind of adjustable throttle valve valve rod that the utility model provides.For convenience of explanation, only show the relevant part of the utility model.
Referring to Fig. 1, a kind of adjustable throttle valve valve rod, comprise valve stem body 1 and the valve head 3 that is connected with described valve stem body 1; Described valve head 3 is for having the taper of cavity, the front end of described valve stem body 1 have with described cavity, match be used to inserting the insertion part in described cavity, between described insertion part and described cavity inner wall, be laid with steel ball 2.
Wherein, after described steel ball 2 is placed in the described cavity of described insertion part insertion and in the annular alley that forms between the inwall of described cavity.
Described valve head 3 is provided with the through hole that is connected with described annular alley, in described through hole, is provided with sealing welding block 4.
Further, described valve stem body adopts stainless steel to make, and described valve head adopts cemented carbide to make.
The utility model adjustable throttle valve valve rod because hard alloy head possesses wear-resisting and anti-corrosion function, invar ball possess stressed even characteristics, because of the sealing welding block guarantee reliability that valve stem body is connected with valve head, because valve stem body intensity is high, good toughness, its root can bear larger impulsive load.
In actual mechanical process, valve rod is made axial forward and is moved, and valve head 3 conical surfaces are slowly lifted off a seat, and the cemented carbide conical surface is to isolation fully, this moment throttle orifice area along with slowly increasing, thereby finally reach maximum value, namely the flow of fluid reaches maximum; When valve rod do axially oppositely mobile, valve head 3 conical surfaces slowly near the valve seat cemented carbide conical surface to laminating fully, this moment throttle orifice area along with slowly diminishing, thereby finally reach minimum value, namely the flow of fluid reaches minimum.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. an adjustable throttle valve valve rod, comprise valve stem body and the valve head that is connected with described valve stem body; It is characterized in that, described valve head is the taper with cavity, the front end of described valve stem body have with described cavity, match be used to inserting the insertion part in described cavity, between described insertion part and described cavity inner wall, be laid with steel ball.
2. adjustable throttle valve valve rod according to claim 1, is characterized in that, after described steel ball is placed in described insertion part and inserts described cavity and in the annular alley that forms between the inwall of described cavity.
3. adjustable throttle valve valve rod according to claim 2, is characterized in that, described valve head is provided with the through hole that is connected with described annular alley, in described through hole, is provided with the sealing welding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202777966U CN203297641U (en) | 2013-05-21 | 2013-05-21 | Adjustable throttle valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202777966U CN203297641U (en) | 2013-05-21 | 2013-05-21 | Adjustable throttle valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203297641U true CN203297641U (en) | 2013-11-20 |
Family
ID=49573649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202777966U Expired - Fee Related CN203297641U (en) | 2013-05-21 | 2013-05-21 | Adjustable throttle valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203297641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105394A (en) * | 2017-12-15 | 2018-06-01 | 上海悟道机电设备有限公司 | A kind of pneumatic stopping valve |
-
2013
- 2013-05-21 CN CN2013202777966U patent/CN203297641U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105394A (en) * | 2017-12-15 | 2018-06-01 | 上海悟道机电设备有限公司 | A kind of pneumatic stopping valve |
| CN108105394B (en) * | 2017-12-15 | 2024-03-22 | 上海悟道机电设备有限公司 | Pneumatic stop valve |
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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: 20131120 Termination date: 20150521 |
|
| EXPY | Termination of patent right or utility model |