阅读说明：本技术 一种三管进料密封装置 (Three-pipe feeding sealing device ) 是由 段福海 刘志刚 李丽君 刘玉明 高丽杰 于 2020-12-18 设计创作，主要内容包括：本发明公开了一种三管进料密封装置,涉及盘根盒技术领域,包括用于套设在光杆上的空心柱体和设置在所述空心柱体上的三个进料管总成,所述空心柱体与所述光杆之间形成有密封腔；三个所述进料管总成与所述空心柱体的一端的距离各不相等,每个所述进料管总成均包括螺纹杆、螺纹帽和一端与所述密封腔连通的进料管,所述螺纹帽与所述进料管的另一端螺纹连接,所述螺纹杆插设在所述进料管中且与所述螺纹帽螺纹连接,所述螺纹杆远离所述螺纹帽的一端固设有活塞,所述活塞的侧壁与所述进料管的内壁贴合。本发明的三管进料密封装置降低了注入密封料的阻力,提高了密封料的加料效率。(The invention discloses a three-tube feeding sealing device, which relates to the technical field of packing boxes and comprises a hollow cylinder body sleeved on a polished rod and three feeding tube assemblies arranged on the hollow cylinder body, wherein a sealing cavity is formed between the hollow cylinder body and the polished rod; it is three the inlet pipe assembly with each inequality of distance of the one end of hollow cylinder, every the inlet pipe assembly all include threaded rod, screw cap and one end with the inlet pipe of seal chamber intercommunication, the screw cap with the other end threaded connection of inlet pipe, the threaded rod is inserted and is established in the inlet pipe and with screw cap threaded connection, the threaded rod is kept away from the one end of screw cap has set firmly the piston, the lateral wall of piston with the inner wall laminating of inlet pipe. The three-tube feeding sealing device reduces the resistance of injecting the sealing material and improves the feeding efficiency of the sealing material.)

1. A three-tube feeding sealing device is characterized in that: the device comprises a hollow cylinder and three feeding pipe assemblies, wherein the hollow cylinder is sleeved on a polished rod, the three feeding pipe assemblies are arranged on the hollow cylinder, and a sealing cavity is formed between the hollow cylinder and the polished rod; it is three the inlet pipe assembly with each inequality of distance of the one end of hollow cylinder, every the inlet pipe assembly all include threaded rod, screw cap and one end with the inlet pipe of seal chamber intercommunication, the screw cap with the other end threaded connection of inlet pipe, the threaded rod is inserted and is established in the inlet pipe and with screw cap threaded connection, the threaded rod is kept away from the one end of screw cap has set firmly the piston, the lateral wall of piston with the inner wall laminating of inlet pipe.

2. The three-tube feed seal device of claim 1, wherein: the projections of the three feeding pipes on the surface vertical to the axial direction of the hollow cylinder are uniformly distributed; the axial directions of the three feeding pipes are respectively vertical to the axial direction of the hollow cylinder.

3. The three-tube feed seal device of claim 1, wherein: the hollow cylinder is vertically arranged, the top end of the hollow cylinder is in threaded connection with an upper cover body, an upper pressing sheet is arranged on the upper cover body, an upper sliding sheet used for being sleeved on the polished rod is arranged between the upper pressing sheet and the upper cover body, and the upper sliding sheet can slide in a gap between the upper pressing sheet and the upper cover body; a lower pressing piece is arranged at the bottom of the hollow cylinder, a lower sliding piece sleeved on the polished rod is arranged in a gap between the lower pressing piece and the bottom end of the hollow cylinder, and the lower sliding piece can slide in the gap between the lower pressing piece and the bottom end of the hollow cylinder; the bottom ends of the upper cover body, the upper sliding piece, the upper pressing piece, the lower sliding piece and the hollow cylinder are respectively provided with holes corresponding to the polish rod, and the upper sliding piece and the lower sliding piece can be in close contact with the polish rod.

4. The three-tube feed seal arrangement of claim 3, wherein: and a sealing ring is arranged between the upper cover body and the hollow cylinder.

5. The three-tube feed seal arrangement of claim 3, wherein: still include supporting seat, spheroid short circuit and fixed pressure cap, supporting seat one end with the bottom of hollow cylinder links firmly, the other end with the sphere body of spheroid short circuit rotates to be connected, fixed pressure cap one end with the outer wall threaded connection of the cylinder of spheroid short circuit, other pot head are established on the supporting seat, the diameter of the bottom of supporting seat is greater than the diameter in the hole on the top of fixed pressure cap, fixed pressure cap can be right the spheroid short circuit carries out the axial spacingly.

6. The three-tube feed seal arrangement of claim 5, wherein: the cylinder is positioned below the spherical surface body, and the cylinder and the spherical surface body are integrally formed; the spherical surface body is provided with an annular groove on the top surface, the bottom of the supporting seat corresponds to the annular groove and is provided with a convex ring, and the convex ring is in sliding fit with the annular groove.

7. The three-tube feed seal arrangement of claim 5, wherein: the wall of the feeding pipe is tangent to the outer side wall of the hollow cylinder, and the material in the feeding pipe can enter the sealed cavity in a direction tangent to the sealed cavity.

Technical Field

The invention relates to the technical field of packing boxes, in particular to a three-pipe feeding sealing device.

Background

In the field of oil extraction in oil fields, a packing box is installed on a ternary combination flooding well head. The existing side packing box mainly comprises a steel wire ball, an elastic band, a hidden deflection adjusting sheet, sealing cloth, rubber particles, a propelling piston, a propelling screw, a hidden deflection adjusting sheet, a deflection adjusting joint, a lower joint and the like. When the device is used, firstly, a prepared steel wire ball is wound on a polished rod and is wound and fixed by an elastic band with proper width, a lower packing box is added in a combined packing mode, rubber particles form rebound force by utilizing a pushing screw rod pressurizing mode, a wear-resistant cloth sleeve is tightly pushed to seal the rubber particles, namely, a double-pipe opposite-pushing mode and a bottom sealing material filling mode are adopted, and the problems of large injection resistance and difficult feeding exist.

Disclosure of Invention

The invention aims to provide a three-tube feeding sealing device, which is used for solving the problems in the prior art, reducing the resistance of injecting sealing materials and improving the feeding efficiency.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a three-tube feeding sealing device, which comprises a hollow cylinder body sleeved on a polished rod and three feeding tube assemblies arranged on the hollow cylinder body, wherein a sealing cavity is formed between the hollow cylinder body and the polished rod; it is three the inlet pipe assembly with each inequality of distance of the one end of hollow cylinder, every the inlet pipe assembly all include threaded rod, screw cap and one end with the inlet pipe of seal chamber intercommunication, the screw cap with the other end threaded connection of inlet pipe, the threaded rod is inserted and is established in the inlet pipe and with screw cap threaded connection, the threaded rod is kept away from the one end of screw cap has set firmly the piston, the lateral wall of piston with the inner wall laminating of inlet pipe.

Preferably, the projections of the three feeding pipes on a plane perpendicular to the axial direction of the hollow cylinder are uniformly distributed; the axial directions of the three feeding pipes are respectively vertical to the axial direction of the hollow cylinder.

Preferably, the hollow cylinder is vertically arranged, the top end of the hollow cylinder is in threaded connection with an upper cover body, an upper pressing sheet is arranged on the upper cover body, an upper sliding sheet for sleeving the polished rod is arranged between the upper pressing sheet and the upper cover body, and the upper sliding sheet can slide in a gap between the upper pressing sheet and the upper cover body; a lower pressing piece is arranged at the bottom of the hollow cylinder, a lower sliding piece sleeved on the polished rod is arranged in a gap between the lower pressing piece and the bottom end of the hollow cylinder, and the lower sliding piece can slide in the gap between the lower pressing piece and the bottom end of the hollow cylinder; the bottom ends of the upper cover body, the upper sliding piece, the upper pressing piece, the lower sliding piece and the hollow cylinder are respectively provided with holes corresponding to the polish rod, and the upper sliding piece and the lower sliding piece can be in close contact with the polish rod.

Preferably, a sealing ring is arranged between the upper cover body and the hollow column body.

Preferably, still include supporting seat, spheroid short circuit and fixed pressure cap, supporting seat one end with the bottom of hollow cylinder links firmly, the other end with the sphere body of spheroid short circuit rotates to be connected, fixed pressure cap one end with the outer wall threaded connection of the cylinder of spheroid short circuit, other pot head are established on the supporting seat, the diameter of the bottom of supporting seat is greater than the diameter in the hole on the top of fixed pressure cap, fixed pressure cap can be right the spheroid short circuit carries out axial spacingly.

Preferably, the cylinder is located below the spherical body, and the cylinder and the spherical body are integrally formed; the spherical surface body is provided with an annular groove on the top surface, the bottom of the supporting seat corresponds to the annular groove and is provided with a convex ring, and the convex ring is in sliding fit with the annular groove.

Preferably, the wall of the feeding pipe is tangent to the outer side wall of the hollow cylinder, and the material in the feeding pipe can enter the sealed cavity in a direction tangent to the sealed cavity.

Compared with the prior art, the invention has the following technical effects:

the three-tube feeding sealing device reduces the resistance of injecting the sealing material and improves the feeding efficiency of the sealing material. According to the three-tube feeding sealing device, the sealing materials are injected along the tangential direction of the ring surface in the sealing cavity through the three feeding tubes with different heights, so that the resistance of injecting the sealing materials is reduced, and the purpose of improving the working efficiency is achieved. The three feeding pipes are different in height, so that the injection resistance is reduced, and the working efficiency is improved. The direction of injecting the sealing material is along the tangential direction of the polish rod to inject into the annular space, so that the push rod phenomenon is effectively prevented, and the injection resistance is reduced. The volume of the sealing material is increased by injecting the three pipes, and the sealing effect is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a first schematic structural view of a three-tube feeding sealing device according to the present invention;

FIG. 2 is a schematic structural view II of a three-tube feeding sealing device according to the present invention;

FIG. 3 is a schematic structural diagram of a ball short joint in the three-tube feeding sealing device of the present invention;

wherein: 100. a three-tube feeding sealing device; 1. sealing the cavity; 2. a first feed tube assembly; 3. a second feed tube assembly; 4. a third feed tube assembly; 5. a hollow cylinder; 6. a seal ring; 7. an upper cover body; 8. an upper slide plate; 9. pressing the mixture into tablets; 10. pressing the mixture downwards; 11. a lower slider; 12. a supporting seat; 13. fixing the pressing cap; 14. a convex ring; 15. the ball body is in short circuit; 16. a feed pipe; 17. a piston; 18. a threaded rod; 19. a threaded cap; 20. a ring groove; 21. a spherical body; 22. a cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

The invention aims to provide a three-tube feeding sealing device, which is used for solving the problems in the prior art, reducing the resistance of injecting sealing materials and improving the feeding efficiency.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1 to 3: the embodiment provides a three-tube feeding sealing device 100, which comprises a hollow cylinder 5 sleeved on a polished rod and three feeding tube assemblies arranged on the hollow cylinder 5, namely a first feeding tube assembly 2, a second feeding tube assembly 3 and a third feeding tube assembly 4; a sealing cavity 1 is formed between the hollow cylinder 5 and the polish rod.

Each feed pipe assembly comprises a threaded rod 18, a threaded cap 19 and a feed pipe 16, one end of each feed pipe 16 is communicated with the sealed cavity 1, the threaded cap 19 is in threaded connection with the other end of each feed pipe 16, the threaded rod 18 is inserted into the feed pipe 16 and is in threaded connection with the threaded cap 19, a piston 17 is fixedly arranged at one end, far away from the threaded cap 19, of the threaded rod 18, and the side wall of the piston 17 is attached to the inner wall of the feed pipe 16.

The projections of the three feeding pipes 16 on the surface vertical to the axial direction of the hollow cylinder 5 are uniformly distributed; the axial directions of the three feeding pipes 16 are respectively vertical to the axial direction of the hollow cylinder 5, the pipe walls of the feeding pipes 16 are tangent to the outer side wall of the hollow cylinder 5, materials in the feeding pipes 16 can enter the sealed cavity 1 in the direction tangent to the sealed cavity 1, the push rod phenomenon can be effectively prevented, and the injection resistance is reduced. The distances between the three feeding pipe assemblies and one end of the hollow cylinder 5 are unequal, so that the injection resistance is reduced, and the working efficiency is improved.

The hollow column body 5 is vertically arranged, the top end of the hollow column body 5 is in threaded connection with an upper cover body 7, and a sealing ring 6 is arranged between the upper cover body 7 and the hollow column body 5. An upper pressing sheet 9 is arranged on the upper cover body 7, an upper sliding sheet 8 which is sleeved on the polished rod is arranged between the upper pressing sheet 9 and the upper cover body 7, the upper sliding sheet 8 can slide in a gap between the upper pressing sheet 9 and the upper cover body 7, the top surface of the upper sliding sheet 8 is attached to the bottom surface of the upper pressing sheet 9, and the bottom surface of the upper sliding sheet 8 is attached to the top surface of a tray on the upper cover body 7, so that the sealing effect of the sealing cavity 1 is ensured; a lower pressing sheet 10 is arranged at the bottom of the hollow cylinder 5, a lower sliding sheet 11 which is sleeved on the polish rod is arranged in a gap between the lower pressing sheet 10 and the bottom end of the hollow cylinder 5, the lower sliding sheet 11 can slide in the gap between the lower pressing sheet 10 and the bottom end of the hollow cylinder 5, the top surface of the lower sliding sheet 11 is attached to the bottom surface of the lower pressing sheet 10, and the bottom surface of the lower sliding sheet 11 is attached to the top surface of the bottom end of the hollow cylinder 5, so that the sealing effect of the sealing cavity 1 is ensured; the bottom ends of the upper cover body 7, the upper sliding piece 8, the upper pressing piece 9, the lower pressing piece 10, the lower sliding piece 11 and the hollow column body 5 are respectively provided with holes corresponding to the polish rod, and the upper sliding piece 8 and the lower sliding piece 11 can be in close contact with the polish rod.

Three pipe feeding sealing device 100 of this embodiment still includes supporting seat 12, spheroid short circuit 15 and fixed pressure cap 13, 12 one end of supporting seat links firmly with the bottom of hollow cylinder 5, the other end rotates with the sphere body 21 of spheroid short circuit 15 to be connected, fixed pressure cap 13 one end and the outer wall threaded connection of the cylinder 22 of spheroid short circuit 15, another pot head is established on supporting seat 12, the diameter of the bottom of supporting seat 12 is greater than the diameter in the hole on the top of fixed pressure cap 13, fixed pressure cap 13 can carry out axial spacing to spheroid short circuit 15. The cylinder 22 is positioned below the spherical body 21, and the cylinder 22 and the spherical body 21 are integrally formed; the top surface of the spherical body 21 is provided with an annular groove 20, the bottom end of the support seat 12 is provided with a convex ring 14 corresponding to the annular groove 20, and the convex ring 14 is in sliding fit with the annular groove 20.

The three-tube feeding sealing device 100 of the present embodiment is used as follows:

during charging, the materials are charged layer by layer from bottom to top. Firstly, the screw cap 19 in the second feeding pipe assembly 3 is detached, the threaded rod 18 is taken out, the sealing material is placed into the cavity of the feeding pipe 16, then the threaded rod 18 is placed, the screw cap 19 is fastened, the threaded rod 18 is rotated by a wrench to enable the threaded rod 18 to drive the piston 17 to be pushed forward, the sealing material is injected into the sealing cavity 1 along the tangential direction of the inner ring surface of the sealing cavity 1, when large resistance is met, the first feeding pipe assembly 2 and/or the third feeding pipe assembly 4 are used for filling, the specific filling step is the same as the step of feeding through the second feeding pipe assembly 3, and the description is omitted.

In the description of the present invention, it should be noted that the terms "top", "bottom", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.