Valve oil drainage device special for inclined shaft
By using guide positioning blocks and inclined surface designs to control Verballs in the inclined shaft environment of oil extraction, the problem of slowing down the Verball's fall in the inclined shaft environment is solved, and higher control capabilities and service life are achieved.
Patent Information
- Application Number
- CN202422026561.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-21
AI Technical Summary
During oil extraction, the fallback speed of the Vertball in the inclined well environment slows down, resulting in a decrease in the limiting ability of one-way flow. In the prior art, springs are used to connect Vertballs, but they are prone to fatigue and their control ability is reduced.
The guide positioning block is used to guide and position the movement of the Verball. The design of the inclined surface realizes the velocity guidance of gravity during the fall of the Verball, ensuring that the Verball comes into contact with the bottom surface under the action of gravity and blocks the oil inlet and outlet ports, which is suitable for inclined well environments.
Through the guide positioning block and inclined surface design, the fallback speed and control ability of Verball are improved, the service life of the device is extended, and it is suitable for inclined well environments and improves reliability.
Smart Images
Figure CN222949832U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of petroleum exploitation, in particular to a special valve oil drain device for inclined wells. Background Art
[0002] During the oil extraction process, crude oil is lifted to the ground through a pump. Valve oil drain devices are often used to achieve one-way flow of crude oil. Valve is a valve. Valve oil drain devices are mostly switched through valve balls. However, there are inclined wells in the oil extraction process. At this time, the angle between the falling trajectory of the valve ball and the gravity direction increases, and the valve ball falls back more slowly, resulting in a decrease in the restriction capacity of one-way flow.
[0003] In the prior art, a spring is used to connect the valve ball to solve the problem of the valve ball falling back, but the spring is prone to fatigue, resulting in a decrease in the control ability of the valve ball. Utility Model Content
[0004] The purpose of the utility model is to provide a special valve oil drainage device for inclined wells, which can control the position of the valve ball through a guide positioning block and ensure the falling speed of the valve ball during the use of the inclined well.
[0005] The utility model provides a special valve oil drain device for inclined wells, comprising:
[0006] A valve shell, wherein the valve shell is a hollow box body, and connection ports are respectively arranged on the left and right sides of the valve shell, and the two connection ports are staggered up and down, the upper connection port is the oil outlet, and the lower connection port is the oil inlet;
[0007] A guide positioning block, wherein the guide positioning block is integrally formed and designed at a sideline position opposite to the oil inlet inside the valve housing, and an inclined surface is provided on the guide positioning block;
[0008] Valve balls, the number of which is 2, and the valve balls are assembled in the valve shell without any connection relationship;
[0009] When the valve balls both contact the bottom surface of the valve shell, the two valve balls collide with each other, one of the valve balls blocks the oil inlet, and the other valve ball collide with the inclined surface.
[0010] Preferably, the guide positioning block has a plane notch, and the plane of the notch of the guide positioning block is an inclined surface.
[0011] Preferably, the guide positioning block has a spherical notch, the spherical notch is connected to the bottom surface of the valve shell, the shape of the spherical notch matches the shape of the valve ball, and the spherical surface of the notch of the guide positioning block is an inclined surface.
[0012] Preferably, the number of spherical notches on the guide positioning block is 2, and the two spherical notches are respectively connected to the bottom surface and the side wall of the valve shell.
[0013] Preferably, two guide positioning blocks are provided in the valve shell, and the two guide positioning blocks are respectively opposite to the oil outlet and the oil inlet, and the structure of the valve shell is centrally symmetrical.
[0014] Preferably, one of the valve balls blocks the oil inlet, and the other valve ball simultaneously contacts the valve ball blocking the oil inlet and the side wall inside the valve shell. At this time, the inclined surface on the guide positioning block on the same side of the oil inlet contacts the other valve ball.
[0015] Preferably, the dedicated valve oil drainage device for inclined wells further comprises a sealing ring, which is fixedly assembled in the valve shell and at the connection point between the two connecting ports.
[0016] Preferably, the sealing ring is made of rubber material.
[0017] Preferably, a sealing chamfer is provided at an inner diameter opening of one end of the sealing ring close to the interior of the valve shell, the sealing chamfer is a spherical surface, and the spherical shape of the sealing chamfer matches the shape of the valve ball.
[0018] Preferably, the inner bottom surface and top surface of the valve shell are cylindrical surfaces, and the diameter of the cylindrical surface is equal to the diameter of the valve ball.
[0019] The technical solution of the utility model guides and positions the movement of the valve ball through the guide positioning block. The inclined surface guides the speed generated by gravity during the falling process of the valve ball. At the same time, the design of the inclined surface reduces the size of the bottom surface inside the valve shell, ensuring that the valve ball will block the oil outlet after contacting the bottom surface under the action of gravity, thereby ensuring the falling speed of the valve ball and being suitable for inclined well environment. At the same time, it has a longer service life and higher reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 This is a front cross-sectional view of the utility model of a special valve oil drain device for inclined wells;
[0022] Figure 2 for Figure 1 Axonometric view of the valve oil drainage device for medium-inclined wells;
[0023] Figure 3 for Figure 1 The main cross-sectional view of the valve oil drainage device for medium-inclined wells with the inclined surface as a plane;
[0024] Figure 4 for Figure 3 The main cross-sectional view of the valve ball in different positions in the valve oil drainage device for medium-inclined wells;
[0025] Figure 5 for Figure 1 The main cross-sectional view of the valve oil drain device for medium-inclined wells when there are two spherical notches on the guide positioning block;
[0026] Figure 6 for Figure 5 Axonometric view of the valve oil drainage device specially used for medium-inclined wells.
[0027] Description of reference numerals:
[0028] 1. Valve housing; 11. Oil outlet; 12. Oil inlet; 2. Positioning guide block; 3. Valve ball; 4. Sealing ring; 41. Sealing chamfer. DETAILED DESCRIPTION
[0029] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0031] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0032] Combination Figures 1 to 6 As shown, the dedicated valve oil drainage device for inclined wells provided by the utility model comprises a valve shell 1, a guide positioning block 2 and a valve ball 3.
[0033] Combination Figures 1 to 6 As shown, the valve shell 1 is a hollow box, and connecting ports are respectively provided on the left and right sides of the valve shell 1, and the two connecting ports are staggered up and down, the upper connecting port is the oil outlet 11, and the lower connecting port is the oil inlet 12; the guide positioning block 2 is integrally formed and designed at the edge position opposite to the oil inlet 12 inside the valve shell 1, and the guide positioning block 2 is provided with an inclined surface; the number of the valve balls 3 is 2, and the valve balls 3 are assembled in the valve shell 1 without a connection relationship; when the valve balls 3 both contact the bottom surface of the valve shell 1, the two valve balls 3 conflict with each other, one of the valve balls 3 blocks the oil inlet 12, and the other valve ball 3 conflicts with the inclined surface.
[0034] In this embodiment, the movement of the valve ball 3 is guided and positioned by the guide positioning block 2, and the inclined surface guides the speed generated by gravity during the falling process of the valve ball 3. At the same time, the design of the inclined surface reduces the size of the bottom surface inside the valve shell 1, ensuring that the valve ball 3 will block the oil outlet 11 after contacting the bottom surface under the action of gravity. It is suitable for inclined well environments and has a longer service life and higher reliability.
[0035] In the present embodiment, only the horizontal structure inside the valve shell 1 is designed. When the valve oil drain device is in a vertical state with the oil outlet 11 and the oil inlet 12 facing up and down, the internal design will completely lose its effect. When the oil outlet 11 and the oil inlet 12 are in an extreme inclined state with the oil outlet 11 and the oil inlet 12 facing up and down, the internal design effect is best.
[0036] In this embodiment, the number of the valve balls 3 is set to 2 because when the number of the valve balls 3 is 1, the valve ball 3 blocks the oil inlet 12 and contacts the inclined surface of the guide positioning block 2. The combined effect of the inclined surface and the oil inlet 12 may cause the position of the valve ball 3 to be fixed; because when the valve ball 3 blocks the oil inlet 12, the edge of the oil inlet 12 will limit the movement of the valve ball 3 in the up and down directions. When the number of the valve balls 3 is 2, the valve ball 3 blocking the oil inlet 12 moves horizontally, and the valve ball 3 contacting the inclined surface moves obliquely upward along the inclined surface. At the same time, the number of the valve balls 3 is 2, which will make the internal space of the valve shell 1 larger, ensuring that the interior of the valve shell 1 can provide sufficient flow cross-sectional area for crude oil.
[0037] In some embodiments, in combination Figure 3 , Figure 4 As shown, the guide positioning block 2 has a planar notch, the notch plane of the guide positioning block 2 is an inclined surface, the inclined surface of the guide positioning block 2 is connected to the bottom surface inside the valve shell 1, and the guide positioning block 2 is in the form of a triangular cylinder or a trapezoidal cylinder, and the inclined surface is easy to process.
[0038] In some embodiments, in combination Figure 1 , Figure 2 As shown, the guide positioning block 2 has a spherical notch, the spherical notch is connected to the bottom surface of the valve shell 1, the shape of the spherical notch matches the shape of the valve ball 3, and the spherical surface of the notch of the guide positioning block 2 is an inclined surface.
[0039] In this embodiment, the spherical surface of the spherical notch is connected to the bottom surface inside the valve shell 1, so that the movement of the valve ball 3 is smoother and the contact between the spherical surface and the valve ball 3 is more reliable. Especially when the valve oil drainage device is tilted, the inclined surface of the plane is affected by the tilt angle of the valve oil drainage device, and the inclination angle of the inclined surface is greatly affected; the inclined surface of the spherical surface is affected by the tilt angle of the valve oil drainage device, and the inclination angle of the inclined surface of the spherical surface is less affected, and the working effect of the inclined surface of the spherical surface is stable.
[0040] In some embodiments, in combination Figure 5 , Figure 6 As shown, the number of spherical notches on the guide positioning block 2 is 2, and the two spherical notches are respectively connected to the bottom surface and the side wall of the valve shell 1. The guide positioning block 2 presents a symmetrical shape, which can ensure the working stability of the guide positioning block 2 when the device is rotated 90 degrees for vertical use.
[0041] In some embodiments, in combination Figures 1 to 6As shown, two guide positioning blocks 2 are provided in the valve shell 1, and the two guide positioning blocks 2 are respectively opposite to the oil outlet 11 and the oil inlet 12. The structure of the valve shell 1 is centrally symmetrical. The valve shell 1 can be used normally after rotating 180 degrees, and the oil inlet 12 and the oil outlet 11 can be interchanged, which can facilitate the assembly of the device. During the assembly process, it is only necessary to ensure that the two connecting ports are staggered up and down.
[0042] In some embodiments, in combination Figure 3 , Figure 4 As shown, one of the valve balls 3 blocks the oil inlet 12, and the other valve ball 3 simultaneously contacts the valve ball 3 blocking the oil inlet 12 and the side wall inside the valve shell 1. At this time, the inclined surface on the guide positioning block 2 on the same side of the oil inlet 12 contacts the other valve ball 3.
[0043] This embodiment is a limitation on the height of the internal cavity of the valve shell 1. When the device is rotated 90 degrees and is in a vertical state, the control of the valve ball 3 can still be guaranteed, so that the device can be applied to more angle environments.
[0044] In some embodiments, in combination Figure 1 , Figure 2 As shown, the dedicated valve oil drainage device for inclined wells also includes a sealing ring 4, which is fixedly assembled in the valve shell 1 and at the connection point of the two connecting ports. The design of the sealing ring 4 can increase the sealing effect of the valve ball 3 on the oil inlet 12.
[0045] In some embodiments, the sealing ring 4 is made of rubber material. Rubber is the most commonly used sealing ring material and can effectively improve the sealing effect.
[0046] In some embodiments, in combination Figure 1 , Figure 2 As shown, a sealing chamfer 41 is provided at the inner diameter opening of one end of the sealing ring 4 close to the interior of the valve shell 1. The sealing chamfer 41 is a spherical surface, and the spherical shape of the sealing chamfer 41 matches the shape of the valve ball 3. Since the shape of the valve ball 3 that fits the sealing ring 4 is special, adding a sealing chamfer 41 that matches the shape of the valve ball 3 can increase the sealing contact surface area of the valve ball 3 and the sealing ring 4, thereby effectively improving the sealing effect.
[0047] In some embodiments, in combination Figure 2 , Figure 6 As shown, the inner bottom surface and top surface of the valve shell 1 are cylindrical surfaces, and the diameter of the cylindrical surface is equal to the diameter of the valve ball 3. The contact area between the inner bottom surface of the valve shell 1 and the valve ball 3 is increased, which can effectively avoid the concentrated friction affecting the shape of the valve ball 3 and indirectly affecting the sealing effect.
[0048] Working process: The dedicated valve oil drainage device for inclined wells is installed in the oil circuit, and the default state is the cut-off state. The two valve balls 3 contact the bottom surface of the valve shell 1 under the action of gravity, and are resisted by the inclined surface. The valve ball 3 away from the inclined surface will be blocked in the oil inlet 12.
[0049] When the oil pump is running, negative pressure is generated in the oil outlet 11, and the crude oil pushes open the valve ball 3 blocking the oil inlet 12, driving the valve ball 3 in contact with the inclined surface to move upward along the inclined surface, leaving sufficient movement space for the valve ball 3 blocking the oil inlet 12, thereby ensuring the flow space of the crude oil; when the oil pump stops running, the valve ball 3 in contact with the inclined surface moves downward along the inclined surface under the action of gravity, pushing the other valve ball 3 to block the oil inlet 12 again.
[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A special valve oil drain device for inclined wells, characterized in that: include: A valve shell (1), wherein the valve shell (1) is a hollow box body, and the left and right sides of the valve shell (1) are respectively provided with connection ports, and the two connection ports are arranged in an upper and lower staggered manner, the upper connection port is an oil outlet (11), and the lower connection port is an oil inlet (12); A guide positioning block (2), wherein the guide positioning block (2) is integrally formed and designed at a sideline position directly opposite to the oil inlet (12) inside the valve housing (1), and an inclined surface is provided on the guide positioning block (2); Valve balls (3), the number of the valve balls (3) is 2, and the valve balls (3) are assembled in the valve housing (1) without any connection relationship; When the valve balls (3) both contact the bottom surface of the valve shell (1), the two valve balls (3) abut against each other, one of the valve balls (3) blocks the oil inlet (12), and the other valve ball (3) abuts against the inclined surface.
2. The dedicated valve oil drain device for inclined wells according to claim 1, characterized in that: The guide positioning block (2) has a plane notch, and the plane of the notch of the guide positioning block (2) is an inclined surface.
3. The dedicated valve oil drain device for inclined wells according to claim 1, characterized in that: The guide positioning block (2) has a spherical notch, the spherical notch is connected to the bottom surface of the valve shell (1), the shape of the spherical notch matches the shape of the valve ball (3), and the spherical surface of the notch of the guide positioning block (2) is an inclined surface.
4. The dedicated valve oil drain device for inclined wells according to claim 3 is characterized in that: The number of spherical notches on the guide positioning block (2) is 2, and the two spherical notches are respectively connected to the bottom surface and the side wall of the valve shell (1).
5. The dedicated valve oil drain device for inclined wells according to claim 1, characterized in that: Two guide positioning blocks (2) are arranged in the valve housing (1), and the two guide positioning blocks (2) are respectively opposite to the oil outlet (11) and the oil inlet (12), and the structure of the valve housing (1) is centrally symmetrical.
6. The dedicated valve oil drain device for inclined wells according to claim 5, characterized in that: One of the valve balls (3) blocks the oil inlet (12), and the other valve ball (3) simultaneously abuts against the valve ball (3) blocking the oil inlet (12) and the side wall inside the valve housing (1), and at this time, the inclined surface on the guide positioning block (2) located on the same side of the oil inlet (12) abuts against the other valve ball (3).
7. The dedicated valve oil drain device for inclined wells according to claim 1, characterized in that: It also includes a sealing ring (4), which is fixedly assembled in the valve shell (1) and at the connection point between the two connecting ports.
8. The dedicated valve oil drain device for inclined wells according to claim 7, characterized in that: The sealing ring (4) is made of rubber material.
9. The dedicated valve oil drain device for inclined wells according to claim 7, characterized in that: A sealing chamfer (41) is provided at an inner diameter opening of one end of the sealing ring (4) close to the interior of the valve shell (1); the sealing chamfer (41) is a spherical surface, and the spherical shape of the sealing chamfer (41) matches the shape of the valve ball (3).
10. The dedicated valve oil drain device for inclined wells according to claim 1, characterized in that: The inner bottom surface and top surface of the valve shell (1) are cylindrical surfaces, and the diameter of the cylindrical surface is equal to the diameter of the valve ball (3).