CN210217666U - Screw drill bypass valve with limiting protection structure - Google Patents
Screw drill bypass valve with limiting protection structure Download PDFInfo
- Publication number
- CN210217666U CN210217666U CN201920625848.1U CN201920625848U CN210217666U CN 210217666 U CN210217666 U CN 210217666U CN 201920625848 U CN201920625848 U CN 201920625848U CN 210217666 U CN210217666 U CN 210217666U
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- valve
- valve body
- valve core
- hole
- wall
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Abstract
The utility model discloses a screw drill bypass valve with a limit protection structure, which comprises a valve body, a valve core and a limit protection device, wherein the valve core is positioned inside the valve body; the valve core can be vertically arranged in the valve core accommodating cavity along the inner wall of the valve body in a sliding manner, and the liquid inlet through hole is communicated with a liquid discharge hole formed in the side wall of the valve body; the limiting protection device comprises a limiting ring arranged on the side wall of the valve core and a guide groove arranged on the inner wall of the valve body. Through an integrated into one piece spacing ring on the valve body, through two upper and lower inner walls of guide way to spacing ring limiting displacement, will need the partial stress that the spring bore to pass through the spacing ring dispersion to the valve body on, the very big degree reduces the pressure that the spring receives to effectively prevent that the spring from taking place plastic deformation, prolong the life of bypass valve, ensure the normal operating of screw rod drilling tool.
Description
Technical Field
The utility model relates to an oil gas field is bypass valve equipment field for probing drilling tool, in particular to screw rod drilling tool bypass valve with spacing protection architecture.
Background
The use of screw drilling tools, also known as displacement motors, is very common in the current oilfield drilling production, and the screw drilling tools are downhole power drilling tools using drilling fluid as power fluid and are displacement motors. The bypass valve of the screw drill is one of components forming the screw drill, the bypass valve of the screw drill is in an open position when the screw drill starts to drill and runs down, so that slurry in a drill string is communicated with an annular space, a spring in the bypass valve is a key component for ensuring that the bypass valve can smoothly keep the open position or the closed position, the spring is required to bear the self weight of a valve core and also bear the liquid potential energy applied to the valve core by drilling fluid, and in the long-time use process, the spring can gradually generate plastic deformation and finally loses effectiveness, so that the normal open position and the closed position of the bypass valve cannot be.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, a screw rod drilling tool bypass valve with spacing protection architecture is provided, can play the guard action to the spring in the bypass valve, avoids it to take place plastic deformation because of long-time excessive atress and leads to unable the use.
In order to achieve the above purpose, the utility model discloses a method is: a bypass valve of a screw drill with a limiting protection structure comprises a valve body, a valve core and a limiting protection device, wherein the valve core is positioned in the valve body; the valve core can be vertically and slidably arranged in the valve core accommodating cavity along the inner wall of the valve body, a spring for driving the valve core to move is sleeved on the valve core, a liquid inlet through hole is formed in the valve core, and the liquid inlet through hole is communicated with a liquid discharge hole formed in the side wall of the valve body; the limiting protection device comprises a limiting ring arranged on the side wall of the valve core and a guide groove arranged on the inner wall of the valve body, the limiting ring is positioned in the guide groove, and the height of the guide groove is the same as the stroke of the valve core in the valve body.
As an improvement of the utility model, two inner walls that the guide way is relative are laid on the upper berth and are equipped with the buffering cushion.
As an improvement of the utility model, the feed liquor through-hole through set up on the case lateral wall branch hole with the weeping hole links to each other.
As an improvement of the utility model, a sieve plate is arranged in the liquid discharge hole.
As an improvement of the utility model, the sieve plate is a circular sheet, and its side integrated into one piece has the square picture peg that is used for pegging graft on the valve body lateral wall.
Has the advantages that:
1. the utility model discloses a screw drill bypass valve with spacing protection architecture, through integrated into one piece spacing ring on the valve body, through the upper and lower two inner walls of guide way to spacing effect of spacing ring, will need the partial stress that the spring bore to disperse to the valve body through the spacing ring, reduce the pressure that the spring receives to a great extent, thereby prevent effectively that the spring from taking place plastic deformation, lengthen the life of bypass valve, ensure the normal operating of screw drill;
2. in order to avoid the hard contact of the limiting ring and the guide groove, a layer of buffer rubber pad is laid on the upper inner wall and the lower inner wall of the guide groove, so that the limiting ring is prevented from being seriously worn and cannot play a limiting role.
Drawings
Fig. 1 is a schematic structural view of the valve core of the present invention at a high position;
fig. 2 is a schematic structural view of the valve element of the present invention at a low position.
The components in the figure are:
1-valve body, 101-valve core accommodating cavity, 102-liquid through pipeline, 2-valve core, 3-spring, 4-liquid inlet through hole, 5-liquid discharge hole, 6-limiting ring, 7-guide groove, 8-buffer rubber pad, 9-branch hole and 10-sieve plate.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.
The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the utility model provides a screw drill bypass valve with a limit protection structure, which comprises a valve body 1, a valve core 2 positioned inside the valve body 1, and a limit protection device, wherein a valve core accommodating cavity 101 and a liquid pipeline 102 are arranged inside the valve body 1 from top to bottom, and the valve core accommodating cavity 101 is communicated with the liquid pipeline 102; the valve core 2 can be vertically arranged in the valve core accommodating cavity 101 along the inner wall of the valve body 1 in a sliding manner, a spring 3 for driving the valve core 2 to move is sleeved on the valve core 2, a liquid inlet through hole 4 is formed in the valve core 2, and the liquid inlet through hole 4 is communicated with a liquid discharge hole 5 formed in the side wall of the valve body 1; the limiting protection device comprises a limiting ring 6 arranged on the side wall of the valve core 2 and a guide groove 7 arranged on the inner wall of the valve body 1, wherein the limiting ring 6 is positioned in the guide groove 7, and the height of the guide groove 7 is the same as the stroke of the valve core 2 in the valve body 1.
The utility model discloses in the use of screw rod drilling tool, when the drilling pump starts, during drilling fluid got into the bypass valve, the drilling fluid that has hydraulic pressure potential energy drove the case and slides to the extreme low position, branch hole and the drain hole in the case stagger this moment, the drilling fluid directly gets into in the motor through the logical liquid pipeline of valve body, the spring was in the state that is compressed this moment, and the spacing ring was through contacting with the lower wall of guide way, the partial transfer of the power that receives the case has been to the valve body, reduce the extrusion force that the spring received, thereby avoid the spring to produce plastic deformation because of receiving great pressure for a long time; when the drilling pump stops, the valve core is at the highest position, the branch hole in the valve core is communicated with the liquid drainage hole, and the limiting ring is contacted with the upper wall of the guide groove, so that the valve core is prevented from excessively moving upwards and falling off.
As another embodiment of the present invention, in order to avoid the hard contact between the limiting ring and the surface of the guiding groove, the two inner walls opposite to the guiding groove 7 are paved with a buffer rubber pad 8.
As another embodiment of the present invention, the liquid inlet through hole 4 is connected to the liquid discharge hole 5 through a branch hole 9 formed on the side wall of the valve element 2.
As another embodiment of the utility model, be equipped with sieve 10 in the weeping hole 5, the sieve mainly is to playing the filtering action to the drilling fluid, avoids each passageway to take place to block up.
The utility model provides a pair of screw rod drilling tool bypass valve with spacing protection architecture, through an integrated into one piece spacing ring on the valve body, through two upper and lower inner walls of guide way to spacing ring limiting displacement, the partial stress that will need the spring to bear passes through the spacing ring and disperses to the valve body on, and the very big degree reduces the pressure that the spring receives to effectively prevent that the spring from taking place plastic deformation, the life of extension bypass valve ensures the normal operating of screw rod drilling tool.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but also to cover any modifications or equivalent changes made in the technical spirit of the present invention, which fall within the scope of the present invention.
Claims (4)
1. The utility model provides a screw rod drilling tool bypass valve with spacing protection architecture, includes valve body (1), is located inside case (2) of valve body (1), spacing protection device, its characterized in that:
a valve core accommodating cavity (101) and a liquid pipeline (102) are formed in the valve body (1) from top to bottom, and the valve core accommodating cavity (101) is communicated with the liquid pipeline (102);
the valve core (2) can be vertically arranged in the valve core accommodating cavity (101) along the inner wall of the valve body (1) in a sliding manner, a spring (3) for driving the valve core (2) to move is sleeved on the valve core (2), a liquid inlet through hole (4) is formed in the valve core (2), and the liquid inlet through hole (4) is communicated with a liquid discharge hole (5) formed in the side wall of the valve body (1);
the limiting protection device comprises a limiting ring (6) arranged on the side wall of the valve core (2) and a guide groove (7) arranged on the inner wall of the valve body (1), wherein the limiting ring (6) is positioned in the guide groove (7), and the height of the guide groove (7) is the same as the stroke of the valve core (2) in the valve body (1).
2. The screw drill bypass valve with the limit protection structure as claimed in claim 1, wherein: and buffer rubber pads (8) are paved on the two opposite inner walls of the guide grooves (7).
3. The screw drill bypass valve with the limit protection structure as claimed in claim 1, wherein: the liquid inlet through hole (4) is connected with the liquid discharge hole (5) through a branch hole (9) formed in the side wall of the valve core (2).
4. The screw drill bypass valve with the limit protection structure as claimed in claim 1 or 3, wherein: a sieve plate (10) is arranged in the liquid leakage hole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920625848.1U CN210217666U (en) | 2019-04-30 | 2019-04-30 | Screw drill bypass valve with limiting protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920625848.1U CN210217666U (en) | 2019-04-30 | 2019-04-30 | Screw drill bypass valve with limiting protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210217666U true CN210217666U (en) | 2020-03-31 |
Family
ID=69924695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920625848.1U Expired - Fee Related CN210217666U (en) | 2019-04-30 | 2019-04-30 | Screw drill bypass valve with limiting protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210217666U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982512A (en) * | 2021-10-26 | 2022-01-28 | 长江大学 | Pressure relief method and device for bypass valve of screw drill |
-
2019
- 2019-04-30 CN CN201920625848.1U patent/CN210217666U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982512A (en) * | 2021-10-26 | 2022-01-28 | 长江大学 | Pressure relief method and device for bypass valve of screw drill |
| CN113982512B (en) * | 2021-10-26 | 2024-05-07 | 长江大学 | Decompression method and device for bypass valve of screw drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200331 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |