Sealing assembly and oil production wellhead device

Abstract

The utility model relates to the technical field of oil exploitation, in particular to a sealing assembly and an oil extraction wellhead device, which comprises an oil extraction pipeline, the outer end of the oil extraction pipeline is in bolted connection with a bolt fastening mechanism, the upper end of the bolt fastening mechanism is fixedly connected with a threaded pipe orifice, and the outer side of the threaded pipe orifice is provided with threads; a sealing sleeve is arranged in the sealing ring, a limiting sleeve is arranged in the sealing sleeve, a partition groove is formed in the inner end of the limiting sleeve, and a rotary sealing device is arranged in the partition groove in a sealed and sleeved mode. The sealing sleeve can effectively prevent leakage of petroleum and natural gas, operation is easy and convenient, and when using is recovered, only the limiting sleeve needs to be rotated, the sealing sleeve can be opened, and pipeline circulation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production, in particular to a sealing component and an oil production wellhead device. Background Art

[0002] Oil and natural gas are buried in oil and gas layers tens to thousands of meters underground. To extract them, it is necessary to build an oil and gas channel between the ground and the underground oil and gas layers. This channel is the oil well. In the process of oil extraction, oil and gas flow from the reservoir into the bottom of the well and then rise from the bottom of the well to the wellhead. There is a sealing device at the wellhead to prevent natural gas or oil leakage.

[0003] Traditional oil production equipment may have sealing rings and pipelines damaged during oil production, which may cause oil or natural gas leakage and need to be repaired. During the repair process, unnecessary leakage may occur. Therefore, the utility model proposes a sealing assembly and an oil production wellhead device for solving the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a sealing assembly and an oil wellhead device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil production pipeline, wherein the outer end of the oil production pipeline is bolted to a bolt fastening mechanism, the upper end of the bolt fastening mechanism is fixedly connected to a threaded pipe mouth, and the outer side of the threaded pipe mouth is provided with a thread; a limiting sleeve, wherein the inner end of the limiting sleeve is provided with a partition groove, and the sealing sleeve inside the partition groove is provided with a rotating sealing device.

[0006] Preferably, the rotary sealing device comprises a tension spring, and the tension spring is symmetrically fixedly connected to the inner end surface of the partition groove.

[0007] Preferably, the end of the retracting spring is fixedly connected to a retracting plate, the lower end surface of the retracting plate is fixedly connected to a sealing sleeve, and the upper end surface of the sealing sleeve is symmetrically fixedly connected to a limiting slider.

[0008] Preferably, limiting sliding grooves are symmetrically provided on both sides of the inner upper end surface of the limiting sleeve, and a limiting sliding block is slidingly and sealably inserted in the limiting sliding groove.

[0009] Preferably, the limiting sleeve is provided with a threaded groove at the inner end of the lower part of the partition groove, and the threaded groove is connected with a threaded pipe mouth corresponding to the thread.

[0010] Preferably, a sealing gasket is fixedly connected to the lower end surface of the limiting sleeve.

[0011] An oil production wellhead device uses the above-mentioned sealing assembly.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides a rotating sealing device, so that when the sealing ring and the pipeline are damaged, the limiting sleeve can be rotated to make the sealing sleeve temporarily sealed, which can effectively prevent the leakage of oil and natural gas. The operation is relatively simple, and when it is restored to use, it only needs to rotate the limiting sleeve to open the sealing sleeve and realize the pipeline circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a partial structural schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of partial structural connection of the utility model.

[0017] In the figure: 1, a limiting sleeve, 2, a sealing sleeve, 3, a retracting plate, 4, a retracting spring, 5, a sealing partition, 6, a partition groove, 7, a sealing gasket, 8, a threaded pipe mouth, 9, a bolt fastening mechanism, 10, an oil production pipeline, 11, a limiting slide groove, and 12, a limiting slider. DETAILED DESCRIPTION

[0018] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit 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.

[0019] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0022] See also Figures 1 to 3 The utility model provides a technical solution: a sealing component, including an oil production pipeline 10, the outer end of the oil production pipeline 10 is bolted with a bolt fastening mechanism 9, the upper end of the bolt fastening mechanism 9 is fixedly connected with a threaded pipe mouth 8, and the outer side of the threaded pipe mouth 8 is provided with a thread; a limiting sleeve 1, the inner end of the limiting sleeve 1 is provided with a partition groove 6, and the sealing sleeve inside the partition groove 6 is provided with a rotating sealing device.

[0023] The rotating sealing device includes a tension spring 4, which is always in a stretched state. The tension spring 4 is symmetrically fixedly connected to the inner end face of the partition groove 6. The end of the tension spring 4 is fixedly connected to a tension plate 3. The lower end face of the tension plate 3 is fixedly connected to a sealing sleeve 2. The upper end face of the sealing sleeve 2 is symmetrically fixedly connected to a limiting slider 12, and the lower end of the sealing sleeve 2 is conical.

[0024] The limiting slide grooves 11 are symmetrically provided on both sides of the upper end surface of the inner side of the limiting sleeve 1, and the limiting slider 12 is inserted into the limiting slide groove 11 for sliding sealing. The limiting slider 12 can slide and seal in the limiting slide groove 11. The limiting sleeve 1 is provided with a threaded groove at the inner end of the lower part of the partition groove 6, and the threaded groove is connected with a threaded pipe mouth 8 corresponding to the thread. The limiting sleeve 1 can be rotated to reduce its height, drive the sealing sleeve 2 to decrease, and the sealing sleeve 2 shrinks and seals under the limit of the threaded pipe mouth 8, so as to achieve temporary sealing. When it is necessary to release the seal, the limiting sleeve 1 is rotated in the opposite direction, and the sealing sleeve 2 is opened under the action of the tension spring 4, so that the pipe can be unobstructed. The lower end surface of the limiting sleeve 1 is fixedly connected with a sealing gasket 7, and the sealing gasket 7 ensures that when the limiting sleeve 1 rotates, the interface between the limiting sleeve 1 and the threaded pipe mouth 8 is always sealed.

[0025] An oil production wellhead device uses the above-mentioned sealing assembly.

[0026] In actual use, when leakage occurs, a threaded groove is opened at the inner end of the lower part of the partition groove 6 by the limiting sleeve 1, and the threaded groove is connected with a threaded pipe mouth 8 corresponding to the thread. The limiting sleeve 1 can be rotated to reduce its height, driving the sealing sleeve 2 to descend, and the end of the pulling spring 4 is fixedly connected with a pulling plate 3, and the lower end face of the pulling plate 3 is fixedly connected with a sealing sleeve 2, and the upper end face of the sealing sleeve 2 is symmetrically fixedly connected with a limiting slider 12, and the lower end of the sealing sleeve 2 is conical. The sealing sleeve 2 shrinks and seals under the limit of the threaded pipe mouth 8, so as to achieve temporary sealing and wait for relevant personnel to repair it. When the seal needs to be released, the limiting sleeve 1 is rotated in the opposite direction, and the sealing sleeve 2 opens under the action of the pulling spring 4, so as to achieve unobstructed inside the pipe, and the lower end face of the limiting sleeve 1 is fixedly connected with a sealing gasket 7, and the sealing gasket 7 ensures that when the limiting sleeve 1 rotates, the interface between the limiting sleeve 1 and the threaded pipe mouth 8 is always sealed.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing assembly, characterized in that: include An oil production pipeline (10), wherein the outer end of the oil production pipeline (10) is bolted to a bolt fastening mechanism (9), the upper end of the bolt fastening mechanism (9) is fixedly connected to a threaded pipe mouth (8), and the outer side of the threaded pipe mouth (8) is provided with threads; A limiting sleeve (1), wherein a partition groove (6) is provided at the inner end of the limiting sleeve (1), and a sealing sleeve inside the partition groove (6) is provided with a rotating sealing device.

2. A sealing assembly according to claim 1, characterized in that: The rotary sealing device comprises a tension spring (4), and the tension spring (4) is symmetrically fixedly connected to the inner end surface of the partition groove (6).

3. A sealing assembly according to claim 2, characterized in that: The end of the retracting spring (4) is fixedly connected to a retracting plate (3), the lower end surface of the retracting plate (3) is fixedly connected to a sealing sleeve (2), and the upper end surface of the sealing sleeve (2) is symmetrically fixedly connected to a limiting slider (12).

4. A sealing assembly according to claim 1, characterized in that: The limiting sleeve (1) has symmetrically disposed limiting sliding grooves (11) on both sides of the inner upper end surface, and the limiting sliding groove (11) is slidably and sealably inserted with a limiting sliding block (12).

5. A sealing assembly according to claim 1, characterized in that: The limiting sleeve (1) is provided with a thread groove at the inner end of the lower part of the partition groove (6), and the thread groove is threadedly connected to a threaded pipe opening (8).

6. A sealing assembly according to claim 1, characterized in that: The lower end surface of the limiting sleeve (1) is fixedly connected with a sealing gasket (7).

7. An oil production wellhead device, characterized in that: The invention comprises the sealing assembly described in any one of claims 1 to 6.

Images