A multi-channel pipe for a hydraulically driven rodless drainage system

Abstract

The present invention provides a multi-channel tube of a hydraulically driven rodless production system, comprising a tube body, an upper joint fixedly installed at one end of the tube body, a lower joint fixedly installed at the other end of the tube body, a nut rotatably installed on the lower joint, an opening formed on the upper joint, a sealing groove formed on the inner wall of the opening, and a sealing ring movably installed inside the sealing groove. When in use, the multi-channel tube of the hydraulically driven rodless production system cooperates with the positioning block on the lower joint and the positioning groove of the upper joint to achieve fast and accurate positioning. Since the aperture of the step above the nut is smaller than that of the lower joint, the lower joint can be used to limit the position. During installation, the nut and the upper joint are tightened to achieve the tightening of the upper and lower joints, and at the same time, the end face between the upper joint and the lower joint is sealed.

Description

Technical Field

[0001] The invention relates to the field of multi-channel pipe equipment, in particular to a multi-channel pipe of a hydraulically driven rodless drainage system. Background Art

[0002] The hydraulically driven rodless pump production technology is very suitable for low-liquid production wells in coalbed methane wells, and it also effectively solves the eccentric wear problem of oil wells.

[0003] At present, the hydraulically driven rodless production system used in coalbed methane wells adopts open circulation due to the limitation of liquid flow channel. During the drainage process, the hydraulic fluid and well fluid are mixed in the wellbore and then discharged, which greatly increases the purification workload of the ground system and shortens the maintenance cycle of the ground power system. This production system can also be applied to oil wells. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a hydraulically driven rodless production system multi-channel pipe to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. When in use, the positioning block on the lower joint cooperates with the positioning groove of the upper joint to achieve fast and accurate positioning. Since the aperture of the step above the nut is smaller than that of the lower joint, the lower joint can be used to limit the position. During installation, the nut and the upper joint are tightened to achieve the tightening of the upper and lower joints.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a hydraulically driven rodless production system multi-channel pipe, including a pipe body, an upper joint is fixedly installed at one end of the pipe body, a lower joint is fixed at the other end of the pipe body, a nut is rotatably installed on the lower joint, an opening is opened on the upper joint, a sealing groove is opened on the inner wall of the opening, and a sealing ring is movably installed inside the sealing groove.

[0006] Furthermore, the sealing ring is a cylindrical ring, and the cylindrical ring is movably installed inside the opening.

[0007] Furthermore, the sealing ring is a circular ring, and the circular ring is movably installed inside the sealing groove.

[0008] Furthermore, one end of the tube body protrudes and is fixed on the lower joint, the annular ring is embedded in the sealing groove, and one end of the tube body is installed in the opening through the sealing ring.

[0009] Furthermore, a connecting hole is provided between one end of the tube body and the lower joint, and the connecting hole is flush with the sealing ring.

[0010] Furthermore, a positioning groove is opened on the side of the upper joint, a positioning block is welded on the bottom of the lower joint, and the positioning groove cooperates with the positioning block.

[0011] Furthermore, an arc-shaped groove is opened on the side of the upper joint, and an arc-shaped block is welded on the bottom of the lower joint, and the arc-shaped block cooperates with the arc-shaped groove to achieve a longitudinal sealed connection.

[0012] Furthermore, the positioning block and the positioning groove cooperate to achieve end face sealing connection between the upper joint and the lower joint.

[0013] Furthermore, the arc block cooperates with the arc groove to realize the longitudinal sealing connection between the upper joint and the lower joint.

[0014] Beneficial effects of the present invention:

[0015] 1. This kind of hydraulically driven rodless drainage system multi-channel pipe, when in use, the positioning block on the lower joint cooperates with the positioning groove of the upper joint to achieve fast and accurate positioning. Since the step aperture above the nut is smaller than that of the lower joint, the positioning block and the positioning groove cooperate to achieve the sealing of the end face between the upper joint and the lower joint.

[0016] 2. In this hydraulically driven rodless production system multi-channel pipe, the height of the arc block is greater than the protruding height of the pipe body. During installation, the upper and lower joints can be accurately positioned first, and then the pipe body and the upper hole of the upper joint are connected, avoiding collision of the pipe body during installation. The radial seal between the upper joint and the lower joint is achieved by cooperating with the arc block, the arc groove, the pipe body and the opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a first embodiment of a multi-channel pipe of a hydraulically driven rodless drainage system of the present invention;

[0018] Figure 2 It is a structural schematic diagram of a first embodiment of a multi-channel pipe of a hydraulically driven rodless drainage system of the present invention;

[0019] Figure 3 It is a structural schematic diagram of a first embodiment of a multi-channel pipe lower joint of a hydraulically driven rodless drainage system of the present invention;

[0020] Figure 4 It is a structural schematic diagram of a first embodiment of a multi-channel pipe upper joint of a hydraulically driven rodless drainage system of the present invention;

[0021] Figure 5 It is a structural schematic diagram of a second embodiment of a multi-channel pipe of a hydraulically driven rodless drainage system of the present invention;

[0022] Figure 6 It is a structural schematic diagram of a second embodiment of a multi-channel pipe of a hydraulically driven rodless drainage system of the present invention;

[0023] Figure 7 It is a structural schematic diagram of a second embodiment of a multi-channel pipe upper joint of a hydraulically driven rodless drainage system of the present invention;

[0024] Figure 8 It is a structural schematic diagram of a second embodiment of a multi-channel pipe lower joint of a hydraulically driven rodless drainage system of the present invention;

[0025] In the figure: 1, upper joint; 2, pipe body; 3, lower joint; 4, nut; 5, sealing ring; 6, positioning block; 7, positioning groove; 8, arc groove; 9, arc block. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0027] See also Figures 1 to 8 The present invention provides a technical solution: a multi-channel pipe of a hydraulically driven rodless production system, comprising a pipe body 2, an upper joint 1 is fixedly installed at one end of the pipe body 2, a lower joint 3 is fixed at the other end of the pipe body 2, a nut 4 is rotatably installed on the lower joint 3, an opening is opened on the upper joint 1, a sealing groove is opened on the inner wall of the opening, a sealing ring 5 is movably installed inside the sealing groove, the outer periphery of the upper joint 1 is threaded, and is used in conjunction with the nut 4 to achieve tightening during installation, three or more holes are opened on the upper joint 1 and the lower joint 3, and the nut 4 and the upper joint 1 are tightened during installation to achieve the tightening of the upper and lower joints.

[0028] Embodiment 1: A sealing ring 5 is installed in the upper sealing groove of the upper joint 1 of the device. The sealing ring 5 is in the shape of a hollow cylinder and is installed flush on the upper joint 1. When the upper joint 1 and the lower joint 3 are installed, the upper joint 1 and the lower joint 3 fit together to form an end face seal. A positioning groove 7 is opened around the upper joint 1, which cooperates with the positioning block 6 of the lower joint 3 to achieve positioning during installation. The positioning block 6 cooperates with the positioning groove 7, and the lower joint 3 cooperates with the sealing ring 5 on the upper joint 1 to achieve an end face sealing connection.

[0029] Embodiment 2: One end of the tube body 2 protrudes from the lower joint 3. After the sealing ring 5 is installed in the sealing groove, one end of the tube body 2 is inserted into the opening. The sealing ring 5 contacts the outer wall of the tube body 2 for sealing, avoiding collision of the tube body 2 during installation. The length of the arc block 9 is greater than the exposed length of the tube body 2. During installation, the arc block 9 is movably inserted into the arc groove 8, which can ensure that the upper joint 1 and the lower joint 3 are first accurately positioned, and the radial sealing between the upper joint 1 and the lower joint 3 is achieved by cooperating with the sealing ring 5 at one end of the tube body 2.

[0030] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-channel pipe of a hydraulically driven rodless drainage system, comprising a pipe body (2), characterized in that: An upper joint (1) is fixedly mounted on one end of the tube body (2), a lower joint (3) is fixedly mounted on the other end of the tube body (2), a nut (4) is rotatably mounted on the lower joint (3), an opening is formed on the upper joint (1), a sealing groove is formed on the inner wall of the opening, and a sealing ring (5) is movably mounted inside the sealing groove.

2. A multi-channel pipe for a hydraulically driven rodless drainage system according to claim 1, characterized in that: The sealing ring (5) is a cylindrical ring, and the cylindrical ring is movably installed inside the opening.

3. The multi-channel pipe of a hydraulically driven rodless drainage system according to claim 1, characterized in that: The sealing ring (5) is a circular ring, and the circular ring is movably installed inside the sealing groove.

4. A multi-channel pipe for a hydraulically driven rodless drainage system according to claim 3, characterized in that: One end of the tube body (2) protrudes and is fixed on the lower joint (3), the annular ring is embedded in the sealing groove, and one end of the tube body (2) is installed in the opening through the sealing ring (5).

5. The multi-channel pipe of a hydraulically driven rodless drainage system according to claim 2, characterized in that: A connecting hole is provided between one end of the tube body (2) and the lower joint (3), and the connecting hole is flush with the sealing ring (5).

6. The multi-channel pipe of a hydraulically driven rodless drainage system according to claim 1, characterized in that: A positioning groove (7) is provided on the side of the upper joint (1), a positioning block (6) is welded to the bottom of the lower joint (3), and the positioning groove (7) matches the positioning block (6).

7. The multi-channel pipe of a hydraulically driven rodless drainage system according to claim 1, characterized in that: An arc-shaped groove (8) is opened on the side of the upper joint (1), and an arc-shaped block (9) is welded on the bottom of the lower joint (3). The arc-shaped block (9) cooperates with the arc-shaped groove (8) to achieve a longitudinal sealed connection.

8. The multi-channel pipe of a hydraulically driven rodless drainage system according to claim 6, characterized in that: The positioning block (6) and the positioning groove (7) cooperate to achieve end-face sealing connection between the upper joint (1) and the lower joint (3).

9. The multi-channel pipe of a hydraulically driven rodless drainage system according to claim 7, characterized in that: The arc block (9) cooperates with the arc groove (8) to realize the longitudinal sealing connection between the upper joint (1) and the lower joint (3).

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