阅读说明：本技术 一种用于石油、天然气钻井的旋塞阀 (Plug valve for petroleum and natural gas drilling ) 是由 金成武 马恺亮 于 2020-12-24 设计创作，主要内容包括：本发明公开了一种用于石油、天然气钻井的旋塞阀,涉及石油及天然气钻井工具技术领域。包括阀体、球形阀芯、密封机构以及清理机构,阀体的内部活动设置有阀座,阀座的内部活动设置有用于控制旋塞阀闭合的球形阀芯,阀座的顶部和底部均设置有用于对旋塞阀进行密封的连接密封机构,球形阀芯的表面固定设置有密封圈,密封圈的表面设置有用于清理杂质的清理机构。通过设置密封圈带动清理机构进行顺时针转动,使得抵触块与活动杆在阀座的滑动抵触下进行转动,使得抵触块与阀座内壁分离,而清理块与阀座内壁接触滑动,使得清理块可以刮下阀座内壁表面粘留的杂质,达到了便于清理的效果,避免了球形阀芯在转动的过程中被杂质卡死。(The invention discloses a plug valve for petroleum and natural gas drilling, and relates to the technical field of petroleum and natural gas drilling tools. Including valve body, spherical case, sealing mechanism and clearance mechanism, the inside activity of valve body is provided with the disk seat, and the inside activity of disk seat is provided with and is used for controlling the closed spherical case of plug valve, and the top and the bottom of disk seat all are provided with and are used for carrying out sealed connection sealing mechanism to the plug valve, and the fixed surface of spherical case is provided with the sealing washer, and the surface of sealing washer is provided with the clearance mechanism that is used for clearing up impurity. Drive clearance mechanism through setting up the sealing washer and carry out clockwise rotation for the touch piece rotates with the movable rod under the slip touch of disk seat, makes touch piece and disk seat inner wall separation, and the touch slip of clearance piece and disk seat inner wall makes the clearance piece can scrape down the impurity that disk seat inner wall surface sticked and stay, has reached the effect of the clearance of being convenient for, has avoided spherical case to be died by impurity card at the pivoted in-process.)

1. The utility model provides a plug valve for oil, natural gas well drilling, includes valve body (1), spherical case (3), sealing mechanism (4) and clearance mechanism (7), its characterized in that: a valve seat (2) is movably arranged in the valve body (1), a spherical valve core (3) used for controlling the closing of the plug valve is movably arranged in the valve seat (2), connecting and sealing mechanisms (4) used for sealing the plug valve are respectively arranged at the top and the bottom of the valve seat (2), a sealing ring (5) is fixedly arranged on the surface of the spherical valve core (3), and a cleaning mechanism (7) used for cleaning impurities is arranged on the surface of the sealing ring (5);

the cleaning mechanism (7) comprises a movable rod (10), one end of the movable rod (10) is located inside the sealing ring (5), a touch block (14) is movably arranged at the other end of the movable rod (10), and a cleaning block (15) is fixedly arranged on the surface of the touch block (14);

sealing mechanism (4) are including first sealed piece (17) and second sealed piece (18), first sealed piece (17) and second sealed piece (18) are located the surface of valve body (1) and disk seat (2) respectively, through connecting spring (20) fixed connection between first sealed piece (17) and the second sealed piece (18), the bottom fixedly connected with of first sealed piece (17) extends to inside connection seal cover (19) of second sealed piece (18).

2. The plug valve for oil and gas drilling according to claim 1, wherein: an operating shaft (6) is fixedly installed on the side face of the spherical valve core (3), and one end of the operating shaft (6) is externally connected with a driving device.

3. The plug valve for oil and gas drilling according to claim 1, wherein: a movable groove (8) is formed in the sealing ring (5), and a movable shaft (9) is fixedly connected to the inner portion of the movable groove (8).

4. The plug valve for oil and gas drilling according to claim 1, wherein: one end of the movable rod (10) is movably sleeved with the surface of the movable shaft (9).

5. The plug valve for oil and gas drilling according to claim 1, wherein: the surface of the movable rod (10) is fixedly provided with a movable spring (11), and the bottom of the movable spring (11) is fixedly connected with the bottom of the movable groove (8).

6. The plug valve for oil and gas drilling according to claim 1, wherein: the upper surface and the lower surface of the movable rod (10) are respectively and fixedly provided with a first sealing plate (12) and a second sealing plate (13).

7. A plug valve for oil and gas drilling according to claim 6, characterized in that: one end of each of the first sealing plate (12) and the second sealing plate (13) extends to the inside of the sealing ring (5).

8. The plug valve for oil and gas drilling according to claim 1, wherein: the contact block (14) is movably connected with the movable rod (10) through a connecting shaft (16), and one end of the contact block (14) is in contact with the inner wall of the valve seat (2).

9. The plug valve for oil and gas drilling according to claim 8, wherein: the movable rod (10) is fan-shaped, the fan-shaped movable rod (10) is arranged in an inclined mode, and the range of the inclined angle is fifteen degrees to ninety degrees.

Technical Field

The invention relates to the technical field of petroleum and natural gas drilling tools, in particular to a plug valve for petroleum and natural gas drilling.

Background

In oil and gas drilling operations, blowout is an undesirable event on any drilling rig because it endangers the lives of drilling crews, can damage the drilling rig, and contaminates the environment, often fluids or gases are ejected from the well with significant force, especially when the fluid is a gas, often resulting in a smoldering surface where the fluid causing the event is from underground rock, which is at abnormally high pressures, above normal.

In the prior art, more impurities are continuously accumulated in a clearance of a friction pair in an oil and gas drill generally, so that a spherical valve core is easily blocked by the impurities in the rotating process, the rotation is not flexible, in addition, certain leaks always occur at the internal connection part of a valve seat installation valve body, and the condition that the oil and gas leak through the leaks is easily caused.

Disclosure of Invention

The invention provides a plug valve for petroleum and natural gas drilling, which has the advantages of convenience in cleaning and sealing and leakage prevention and solves the problems that a spherical valve core is easily blocked by impurities in the rotating process and petroleum and natural gas are accidentally leaked.

In order to realize the purposes of convenient cleaning and sealing and leakage prevention, the invention provides the following technical scheme: a plug valve for petroleum and natural gas drilling comprises a valve body, a spherical valve core, a sealing mechanism and a cleaning mechanism, wherein a valve seat is movably arranged in the valve body, the spherical valve core used for controlling the plug valve to be closed is movably arranged in the valve seat, the top and the bottom of the valve seat are respectively provided with a connecting and sealing mechanism used for sealing the plug valve, a sealing ring is fixedly arranged on the surface of the spherical valve core, and the surface of the sealing ring is provided with the cleaning mechanism used for cleaning impurities;

the cleaning mechanism comprises a movable rod, one end of the movable rod is positioned inside the sealing ring, the other end of the movable rod is movably provided with a contact block, and the surface of the contact block is fixedly provided with a cleaning block;

the cleaning mechanism comprises a first sealing block and a second sealing block, the first sealing block and the second sealing block are respectively located on the surfaces of the valve body and the valve seat, the first sealing block and the second sealing block are fixedly connected through a connecting spring, and the bottom of the first sealing block is fixedly connected with a connecting sealing sleeve extending to the inside of the second sealing block.

As a preferable technical scheme of the invention, an operating shaft is fixedly arranged on the side surface of the spherical valve core, and one end of the operating shaft is externally connected with a driving device.

As a preferable technical scheme of the invention, a movable groove is formed in the sealing ring, and a movable shaft is fixedly connected in the movable groove.

As a preferable technical scheme of the invention, one end of the movable rod is movably sleeved with the surface of the movable shaft.

As a preferable technical scheme of the invention, a movable spring is fixedly arranged on the surface of the movable rod, and the bottom of the movable spring is fixedly connected with the bottom of the movable groove.

As a preferred technical solution of the present invention, the upper and lower surfaces of the movable rod are respectively fixedly provided with a first sealing plate and a second sealing plate.

In a preferred embodiment of the present invention, one end of each of the first and second seal plates extends into the seal ring.

As a preferred technical scheme of the invention, the contact block is movably connected with the movable rod through a connecting shaft, and one end of the contact block is in contact with the inner wall of the valve seat.

Compared with the prior art, the plug valve for petroleum and natural gas drilling provided by the invention has the following beneficial effects:

1. this a plug valve for oil, natural gas drilling drives clearance mechanism through setting up the sealing washer and carries out clockwise rotation for the touch multitouch rotates with the movable rod under the slip touch of disk seat, makes touch multitouch and disk seat inner wall separation, and clearance piece slides with disk seat inner wall contact, makes the impurity that disk seat inner wall surface sticked and stayed can be scraped down to the clearance piece, has reached the effect of the clearance of being convenient for, has avoided spherical case to be died by impurity card at the pivoted in-process.

2. This a plug valve for oil, natural gas drilling, connect first sealed piece and the sealed piece of second respectively through the both ends that set up coupling spring, make coupling spring can cushion the impact of oil or natural gas to the disk seat through first sealed piece and the sealed piece of second, the effect of buffering has been reached, the inside of the sealed piece of second is inserted to the bottom of rethread connection seal cover, make the connection seal cover can wrap up coupling spring, the leak source appears in the junction of having avoided first sealed piece and the sealed piece of second, sealed leak-proof effect has been reached.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a front sectional view of a plug valve for oil and gas drilling according to the present invention;

FIG. 2 is a schematic structural diagram of a plug valve seat for oil and gas drilling according to the present invention;

FIG. 3 is a structural side sectional view of a ball valve core of a plug valve for oil and gas drilling of the invention;

FIG. 4 is an enlarged view of the structure at the position A of the plug valve for oil and gas drilling of the invention;

fig. 5 is an enlarged view of the structure at the position B of the plug valve for oil and gas drilling of the invention.

In the figure: 1. a valve body; 2. a valve seat; 3. a spherical valve core; 4. connecting a sealing mechanism; 5. a seal ring; 6. an operating shaft; 7. a cleaning mechanism; 8. a movable groove; 9. a movable shaft; 10. a movable rod; 11. a movable spring; 12. a first sealing plate; 13. a second sealing plate; 14. a contact block; 15. cleaning the block; 16. a connecting shaft; 17. a first seal block; 18. a second seal block; 19. connecting a sealing sleeve; 20. a spring is connected.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1-5, the invention discloses a plug valve for drilling oil and natural gas, comprising a valve body 1, a spherical valve core 3, a sealing mechanism 4 and a cleaning mechanism 7, wherein a valve seat 2 is movably arranged in the valve body 1, the spherical valve core 3 for controlling the plug valve to close is movably arranged in the valve seat 2, the top and the bottom of the valve seat 2 are respectively provided with a connecting and sealing mechanism 4 for sealing the plug valve, a sealing ring 5 is fixedly arranged on the surface of the spherical valve core 3, the surface of the sealing ring 5 is provided with the cleaning mechanism 7 for cleaning impurities, the cleaning mechanism 7 comprises a movable rod 10, one end of the movable rod 10 is positioned in the sealing ring 5, a movable groove 8 is arranged in the sealing ring 5, a movable shaft 9 is fixedly connected in the movable groove 8, one end of the movable rod 10 is movably sleeved with the surface of the movable shaft 9, the activity of the other end of movable rod 10 is provided with touch-and-close piece 14, through connecting axle 16 swing joint between touch-and-close piece 14 and the movable rod 10, it is inconsistent between the one end of touch-and-close piece 14 and the 2 inner walls of disk seat, touch-and-close piece 14's fixed surface installs clearance piece 15, drives clearance mechanism 7 through setting up sealing washer 5 and carries out clockwise rotation for touch-and-close piece 14 rotates under the slip conflict of disk seat 2 with movable rod 10, makes touch-and-close piece 14 and the separation of 2 inner walls of disk seat, and clearance piece 15 slides with the contact of 2 inner walls of disk seat, makes clearance piece 15 can scrape down the impurity that the disk seat 2 inner wall surface sticked down, has reached the effect of being convenient for to clear up, has avoided spherical valve core 3 to be died by the impurity card at the pivoted in-.

The sealing mechanism 4 comprises a first sealing block 17 and a second sealing block 18, the first sealing block 17 and the second sealing block 18 are respectively positioned on the surfaces of the valve body 1 and the valve seat 2, the first sealing block 17 and the second sealing block 18 are fixedly connected through a connecting spring 20, the bottom of the first sealing block 17 is fixedly connected with a connecting sealing sleeve 19 extending to the inside of the second sealing block 18, the two ends of the connecting spring 20 are respectively connected with the first sealing block 17 and the second sealing block 18, so that the connecting spring 20 can buffer the impact of oil or natural gas on the valve seat 2 through the first sealing block 17 and the second sealing block 18, the buffering effect is achieved, the bottom of the connecting sealing sleeve 19 is inserted into the inside of the second sealing block 18, the connecting sealing sleeve 19 can wrap the connecting spring 20, and leakage at the joint of the first sealing block 17 and the second sealing block 18 is avoided, the effect of sealing and leakage prevention is achieved.

Specifically, an operating shaft 6 is fixedly installed on the side surface of the spherical valve core 3, and one end of the operating shaft 6 is externally connected with a driving device.

In this embodiment, utilize the external drive arrangement of one end of operating axis 6 for drive arrangement can drive spherical valve core 3 through operating axis 6 and rotate, makes spherical valve core 3 can open and close the device alive, has reached the effect of opening and close.

Specifically, a movable spring 11 is fixedly mounted on the surface of the movable rod 10, and the bottom of the movable spring 11 is fixedly connected with the bottom of the movable groove 8.

In this embodiment, the bottom of the movable spring 11 is fixedly connected with the bottom of the movable groove 8, so that the movable spring 11 can drive the movable rod 10 to return to the original position when no external force is applied to the surface, and the effect of automatic return is achieved.

Specifically, the upper surface and the lower surface of the movable rod 10 are respectively and fixedly provided with a first sealing plate 12 and a second sealing plate 13, and one ends of the first sealing plate 12 and the second sealing plate 13 extend into the sealing ring 5.

In this embodiment, utilize the inside that first closing plate 12 and second closing plate 13's one end all extended to sealing washer 5, avoided oil or natural gas can get into the inside of sealing washer 5, reached the effect that blocks.

The working principle and the using process of the invention are as follows: when the oil valve is used, the operating shaft 6 is externally connected with a driving device, so that the operating shaft 6 can drive the spherical valve core 3 to rotate clockwise, the sealing ring 5 rotates along with the spherical valve core 3, the sealing ring 5 drives the cleaning mechanism 7 to rotate clockwise, the contact block 14 and the movable rod 10 rotate under the sliding conflict of the valve seat 2, the contact block 14 is separated from the inner wall of the valve seat 2, the cleaning block 15 slides in contact with the inner wall of the valve seat 2, the cleaning block 15 can scrape off impurities stuck on the surface of the inner wall of the valve seat 2, and the opening of the spherical valve core 3 corresponds to the opening of the valve seat 2, so that oil or natural gas can circulate; when oil or natural gas passes through the valve seat 2, the two ends of the connecting spring 20 are respectively connected with the first sealing block 17 and the second sealing block 18, so that the connecting spring 20 can buffer the impact of the oil or natural gas on the valve seat 2 through the first sealing block 17 and the second sealing block 18, the bottom of the connecting sealing sleeve 19 is inserted into the second sealing block 18, the connecting sealing sleeve 19 can wrap the connecting spring 20, the connecting spring 20 is prevented from contacting with the oil or natural gas, and meanwhile, the connecting sealing sleeve 19 can seal the joint of the first sealing block 17 and the second sealing block 18.

In summary, the plug valve for petroleum and natural gas drilling drives the cleaning mechanism 7 to rotate clockwise by arranging the sealing ring 5, so that the abutting block 14 and the movable rod 10 rotate under the sliding interference of the valve seat 2, the abutting block 14 is separated from the inner wall of the valve seat 2, and the cleaning block 15 slides in contact with the inner wall of the valve seat 2, so that the cleaning block 15 can scrape off impurities stuck on the surface of the inner wall of the valve seat 2, the effect of convenient cleaning is achieved, and the spherical valve core 3 is prevented from being blocked by the impurities in the rotating process; connect first sealed piece 17 and the sealed piece 18 of second respectively through the both ends that set up connecting spring 20 for connecting spring 20 can cushion the impact of oil or natural gas to disk seat 2 through first sealed piece 17 and the sealed piece 18 of second, the effect of buffering has been reached, the inside of the sealed piece 18 of second is inserted to the bottom of rethread connection seal cover 19, make connection seal cover 19 can wrap up connecting spring 20, the leak source has been avoided appearing in the junction of first sealed piece 17 and the sealed piece 18 of second, sealed leak-proof effect has been reached.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.