Oil gas recovery tensile test equipment

Abstract

The utility model discloses an oil gas recovery tensile test device which comprises a first chuck, a second chuck and a tension device, and the first chuck and the second chuck are used for being fixedly connected with a test connector; the first chuck and / or the second chuck are / is provided with a flow channel which is in fluid communication with the test connector, so that preset hydraulic pressure is applied to the test connector through the flow channel; and the tension device applies coaxial and reverse tension to the test joint through the first chuck and the second chuck. During testing, the two ends of the testing connector are clamped and fixed through the first chuck and the second chuck respectively, then preset hydraulic pressure is applied to the testing connector through the flow channel, and finally tensile force is applied to the testing connector through the tensile force device. Therefore, the tensile test equipment for oil gas recovery can effectively simulate the actual use environment of the test joint so as to accurately obtain the tensile property of the test joint.

Description

Technical Field

[0001] The utility model belongs to the technical field of testing equipment, and particularly relates to an oil and gas recovery tensile test equipment. Background Art

[0002] During the fluid pipeline transportation in industrial production, the pipelines and accessory devices such as valves installed on the pipelines need to be protected by key breakaway protection, especially for chemical liquids, toxic liquids, and combustible liquids and gases. For the pipelines used in oil and gas recovery and the joints between pipelines, etc., they need to have a certain tensile property to ensure the effective connection between pipelines and reduce the occurrence of internal oil and gas leakage caused by possible pipeline breakage. Therefore, when connecting oil and gas pipelines, it is necessary to ensure the tensile test performance of pipeline joints.

[0003] Therefore, in view of the above technical problems, it is necessary to provide an oil and gas recovery tensile test equipment. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an oil and gas recovery tensile test equipment, which can perform tensile tests on pipeline joints in oil and gas recovery to ensure the connection effect after the pipeline joints are applied to pipelines.

[0005] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0006] An oil and gas recovery tensile test equipment includes a first chuck, a second chuck, and a tensile device. The first chuck and the second chuck are used for fixedly connecting with a test joint; a flow channel in fluid communication with the test joint is provided in the first chuck and / or the second chuck to apply a preset hydraulic pressure to the test joint through the flow channel; the tensile device applies coaxial and opposite tensile forces to the test joint through the first chuck and the second chuck.

[0007] In one or more embodiments of the utility model, the oil and gas recovery tensile test equipment further includes a fixing block rotatably fitted in the second chuck. Wherein, when the fixing block is in the first rotation position, the fixing block can axially disengage from the second chuck; when the fixing block is in the second rotation position, the fixing block is axially limited in the second chuck.

[0008] In one or more embodiments of the utility model, the fixing block includes an abutting portion provided on its outer peripheral wall. The second chuck is provided with a sliding groove, and the fixing block is rotatably fitted in the sliding groove through the abutting portion. The second chuck is provided with an avoidance hole communicating with the sliding groove on the side close to the fixing block;

[0009] When the fixed block is in the first rotation position, the vertical projection of the abutting portion and the avoidance hole on the reference plane overlaps, and the reference plane is a plane perpendicular to the axis of the second chuck; when the fixed block is in the second rotation position, the abutting portion axially abuts against the groove wall of the sliding groove on the second chuck.

[0010] In one or more embodiments of the present utility model, when the fixed block is in the second rotation position, the abutting area of the abutting portion and the groove wall of the sliding groove on the axis of the second chuck is smaller than the vertical projection area of the sliding groove on the reference plane.

[0011] In one or more embodiments of the present utility model, the outer peripheral wall of the fixed block slidably abuts against the inner peripheral wall of the second chuck.

[0012] In one or more embodiments of the present utility model, the fixed block includes a first fixed block and a second fixed block. After the first fixed block and the second fixed block abut against each other, a fastening portion is formed for surrounding and clamping the outer periphery of the test joint.

[0013] In one or more embodiments of the present utility model, one end of the test joint is inserted into the flow channel, and a sealing member that can cooperate with the outer peripheral wall of the test joint is provided on the inner peripheral wall of the flow channel.

[0014] In one or more embodiments of the present utility model, the second chuck is provided with a connection surface that cooperates with the hydraulic device at the liquid inlet of the flow channel, and the shape of the connection surface is adapted to the liquid outlet end of the hydraulic device.

[0015] In one or more embodiments of the present utility model, it further includes connection blocks respectively fixedly connected to the relatively far sides of the first chuck and the second chuck. The connection blocks are provided with connection holes, and the tension device applies a tension force to the test joint through the connection holes.

[0016] In one or more embodiments of the present utility model, the first chuck and / or the second chuck is provided with a mounting hole that is threadedly connected to the test joint.

[0017] Compared with the prior art, when the oil and gas recovery tensile test equipment of the present utility model conducts a tensile test on the test joint, it first clamps and fixes both ends of the test joint through the first chuck and the second chuck respectively, then applies a preset hydraulic pressure to the test joint through the flow channel, and finally applies a tensile force to the test joint through the tension device. Therefore, it can effectively simulate the actual use environment of the test joint to accurately obtain the tensile performance of the test joint. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of an oil and gas recovery tensile test device in an embodiment of the present invention;

[0020] Figure 2 It is a schematic sectional view of an oil and gas recovery tensile test device in an embodiment of the present invention;

[0021] Figure 3 For Figure 2 the enlarged schematic view at position A in;

[0022] Figure 4 It is a schematic structural diagram of a fixing block in an embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of the fixing block in the first rotation position in an embodiment of the present invention.

[0024] Main reference numeral description:

[0025] 1. First chuck; 2. Second chuck; 21. Chute; 22. Avoidance hole; 3. Fixing block; 31. Contact portion; 32. Fastening portion; 4. Flow channel; 5. Sealing member; 6. Connecting block; 61. Connecting hole. Specific embodiments

[0026] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Referring to Figure 1 , the oil and gas recovery tensile test device in an embodiment of the present invention includes a first chuck 1, a second chuck 2, a tensile device (not shown in the figure), and a fixing block 3.

[0028] Referring to Figure 1 , the first chuck 1 and the second chuck 2 are used to be connected with the test joint ( Figure 1is fixedly connected as shown by the mark a; the first chuck 1 and / or the second chuck 2 are provided with a flow channel 4 that is in fluid communication with the test joint, so as to apply a preset hydraulic pressure to the test joint through the flow channel 4. Wherein, the preset hydraulic pressure refers to the hydraulic pressure borne inside the test joint in the actual use scenario. In this embodiment, taking the second chuck 2 being provided with the flow channel 4 as an example, this is not a limitation on the position of the flow channel 4. In other embodiments, the flow channel 4 can also be provided in the first chuck 1; or the flow channel 4 can be provided in both the first chuck 1 and the second chuck 2. The tensile device applies coaxial and opposite tensile forces to the test joint through the first chuck 1 and the second chuck 2. The tensile device can be a tensile testing machine.

[0029] During the test, first, the two ends of the test joint are respectively limited and fixed by the first chuck 1 and the second chuck 2, then a preset hydraulic pressure is applied to the test joint through the flow channel 4, and finally, the tensile device is used to apply a tensile force. This can effectively simulate the parameters of the test joint in the actual use environment and ensure accurately obtaining the tensile performance of the test joint.

[0030] Refer to Figure 1 , the first chuck 1 and / or the second chuck 2 are provided with mounting holes that are threadedly connected to the test joint. In this embodiment, the first chuck 1 is fixedly connected to the test joint through the mounting hole, and the second chuck 2 is fixedly connected to the test joint through the fixing block 3.

[0031] Refer to Figure 2 and Figure 3 , the fixing block 3 is rotatably fitted in the second chuck 2. Wherein, when the fixing block 3 is in the first rotation position, the fixing block 3 can be axially separated from the second chuck 2 along the second chuck 2; when the fixing block 3 is in the second rotation position, the fixing block 3 is axially limited in the second chuck 2 within the second chuck 2.

[0032] Specifically, refer to Figure 3 and Figure 4 , the fixing block 3 includes an abutting portion 31 provided on its outer peripheral wall. The second chuck 2 is provided with a sliding groove 21. The fixing block 3 is rotatably fitted in the sliding groove 21 through the abutting portion 31. The second chuck 2 is provided with an avoidance hole 22 that communicates with the sliding groove 21 on the side close to the fixing block 3.

[0033] Combined with Figure 5 , when the fixing block 3 is in the first rotation position, the perpendicular projection of the abutting portion 31 and the avoidance hole 22 on the reference plane overlaps. The reference plane is a plane perpendicular to the axis of the second chuck 2; when the fixing block 3 is in the second rotation position, the abutting portion 31 abuts against the groove wall of the sliding groove 21 axially within the second chuck 2. In this embodiment, the abutting portion 31 can be set as an abutting block.

[0034] Refer to Figure 3 and Figure 4, the fixing block 3 includes a first fixing block and a second fixing block. After the first fixing block and the second fixing block are abutted against each other, a fastening portion 32 for surrounding the outer periphery of the clamping test joint is formed. In this embodiment, the fastening portion 32 protrudes to be clamped on the outer periphery of the test joint.

[0035] Therefore, when installing and fixing the test joint, first make the first fixing block and the second fixing block surround the outer periphery of the clamping test joint. Then rotate and adjust the fixing block 3 to the first rotation position, and move it along the axial direction of the second chuck 2 into the fixing block 3 and the chute 21. Then continue to rotate and adjust the fixing block 3 to the second rotation position so that the abutting portion 31 abuts against the groove wall of the chute 21 to complete the limit installation of the test joint.

[0036] Among them, referring to Figure 3 , the outer peripheral wall of the fixing block 3 is in sliding abutment with the inner peripheral wall of the second chuck 2. Such a setting can ensure the stability of the fixing block 3 when switching and rotating between the first rotation position and the second rotation position, and reduce the possible shaking.

[0037] Furthermore, when the fixing block 3 is in the second rotation position, the abutting area of the abutting portion 31 and the groove wall of the chute 21 in the axial direction of the second chuck 2 is smaller than the vertical projection area of the chute 21 in the reference plane. By cooperatively adjusting the area sizes of the abutting portion 31 and the chute 21 in the reference plane, the limiting effect of the second chuck 2 on the fixing block 3 can be ensured.

[0038] Referring to Figure 3 , one end of the test joint is inserted into the flow channel 4, and a sealing member 5 that can cooperate with the outer peripheral wall of the test joint is provided on the inner peripheral wall of the flow channel 4. In this embodiment, the sealing member 5 can be a sealing ring made of rubber material.

[0039] Referring to Figure 1 , the second chuck 2 is provided with a connection surface for cooperating with the hydraulic equipment at the liquid inlet of the flow channel 4, and the shape of the connection surface is adapted to the liquid outlet end of the hydraulic equipment. In this embodiment, the connection surface is set as a plane for cooperating with the liquid outlet end of the hydraulic equipment to reduce the possibility of fluid leakage.

[0040] Referring to Figure 1 , in this embodiment, the oil and gas recovery tensile test equipment further includes connection blocks 6 respectively fixedly connected to the relatively far sides of the first chuck 1 and the second chuck 2. The connection block 6 is provided with a connection hole 61, and the tensile device applies a tensile force to the test joint through the connection hole 61.

[0041] When the oil and gas recovery tensile test equipment in an embodiment of the present utility model is installed, first, the first chuck 1 is fixedly connected to one end of the test joint, and then the other end of the test joint is fixed through the cooperation of the fixing block 3. Then, the flow channel 4 of the second chuck 2 is communicated with an external hydraulic device, and two connecting blocks 6 connected to the first chuck 1 and the second chuck 2 are respectively connected to an external tensile device, thus completing the installation steps.

[0042] During the test, a preset pressure is applied to the test joint through an external hydraulic device, and at the same time, a tensile force is applied to the test joint through the tensile device to simulate the actual use environment of the test joint. Therefore, the oil and gas recovery tensile test equipment of the present utility model can accurately and effectively obtain the tensile performance of the test joint.

[0043] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0044] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oil and gas recovery tensile test equipment, characterized in that: The invention comprises a first chuck (1), a second chuck (2) and a tension device, wherein the first chuck (1) and the second chuck (2) are used for fixed connection with a test joint; the first chuck (1) and / or the second chuck (2) are provided with a flow channel (4) in fluid communication with the test joint so as to apply a preset hydraulic pressure to the test joint through the flow channel (4); the tension device applies a coaxial and opposite tension to the test joint through the first chuck (1) and the second chuck (2).

2. The oil and gas recovery tensile test equipment according to claim 1, characterized in that: It also includes a fixed block (3) rotatably engaged with the second chuck (2), wherein when the fixed block (3) is in a first rotational position, the fixed block (3) can be detached from the second chuck (2) along the axial direction of the second chuck (2); when the fixed block (3) is in a second rotational position, the fixed block (3) is axially confined in the second chuck (2) .

3. The oil and gas recovery tensile test equipment according to claim 2, characterized in that: The fixing block (3) comprises an abutting portion (31) arranged on its outer peripheral wall, the second clamp (2) is provided with a slide groove (21), the fixing block (3) is rotatably engaged in the slide groove (21) through the abutting portion (31), and the second clamp (2) is provided with a position avoidance hole (22) in communication with the slide groove (21) on a side close to the fixing block (3); When the fixed block (3) is located at the first rotation position, the abutment portion (31) overlaps with the vertical projection of the avoidance hole (22) on a reference plane, and the reference plane is a plane perpendicular to the axial direction of the second chuck (2); when the fixed block (3) is located at the second rotation position, the abutment portion (31) abuts against the groove wall of the sliding groove (21) in the axial direction of the second chuck (2).

4. The oil and gas recovery tensile test equipment according to claim 3, characterized in that: When the fixed block (3) is located at the second rotation position, the axial abutment area between the abutment portion (31) and the groove wall of the slide groove (21) in the second chuck (2) is smaller than the vertical projection area of ​​the slide groove (21) on the reference plane.

5. The oil and gas recovery tensile test equipment according to claim 3, characterized in that: The outer peripheral wall of the fixing block (3) is in sliding contact with the inner peripheral wall of the second clamp (2).

6. The oil and gas recovery tensile test equipment according to claim 2, characterized in that: The fixing block (3) comprises a first fixing block and a second fixing block, and the first fixing block and the second fixing block are abutted against each other to form a fastening portion (32) for wrapping around and clamping the outer periphery of the test connector.

7. The oil and gas recovery tensile test equipment according to claim 1, characterized in that: One end of the test connector is inserted into the flow channel (4), and the inner peripheral wall of the flow channel (4) is provided with a sealing member (5) that can cooperate with the outer peripheral wall of the test connector.

8. The oil and gas recovery tensile test equipment according to claim 1, characterized in that: The second clamp (2) is provided with a connection surface for connecting with the hydraulic equipment at the liquid inlet of the flow channel (4), and the connection surface is adapted to the shape of the liquid outlet of the hydraulic equipment.

9. The oil and gas recovery tensile test equipment according to claim 1, characterized in that: It also comprises a connection block (6) fixedly connected to the first clamp (1) and the second clamp (2) on a side that is relatively far away from each other, the connection block (6) being provided with a connection hole (61), and the tension device applies tension to the test joint through the connection hole (61).

10. The oil and gas recovery tensile test equipment according to claim 1, characterized in that: The first clamp (1) and / or the second clamp (2) is provided with a mounting hole threadedly connected to the test connector.

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