CN212745397U

CN212745397U - Pressure test joint for oil pipe

Info

Publication number: CN212745397U
Application number: CN202020961764.8U
Authority: CN
Inventors: 吴显鹏; 陶佳栋
Original assignee: Shandong Xinnuo New Materials Co ltd
Current assignee: Shandong Xinnuo New Materials Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-03-19
Anticipated expiration: 2030-05-29

Abstract

The utility model provides an oil pipe pressure test joint, which belongs to the technical field of pipeline connecting pieces and comprises a male buckle adapter connected with an oil pipe female buckle end and a female buckle adapter connected with the oil pipe male buckle end, wherein a first circular bead abutted against the end face of the oil pipe female buckle end is circumferentially arranged outside the male buckle adapter; a second shoulder which is abutted against the section of the male end of the oil pipe is circumferentially arranged in the female buckle adapter; the first shoulder circumference all is equipped with the sealing member with second shoulder circumference. The utility model overcomes current threaded connection pipe end pressure testing can show to reduce the oil pipe internal and external screw thread damage probability and sealed effectual because of the too big technical problem that causes of oil pipe internal and external screw thread moment of torsion.

Description

Pressure test joint for oil pipe

Technical Field

The utility model belongs to the technical field of the pipe connection spare, especially, relate to an oil pipe pressure testing connects.

Background

In the process flow of processing and repairing the oil pipe for the oil field, a hydrostatic pressure test needs to be carried out on the oil pipe, and the existing pressure test method comprises the following steps: and (3) carrying out pressure test on the end of the externally-hung plugging pipe or the end of the threaded connection pipe. The pressure testing device adopted by the pressure testing of the external holding type plugging pipe end has a complex structure and is less applied to small-diameter oil pipes; the pressure testing device adopted by the pressure testing of the threaded connection pipe end has a relatively simple structure, and is a commonly used pressure testing method in the oil pipe repairing process of the oil field.

However, when the pressure test method for the end of the threaded connection pipe is adopted to test the pressure of the oil pipe, the internal and external threads of the oil pipe are required to be connected, plugged and tested, the oil pipe threads are damaged due to the fact that the connection joints are not dismounted when the oil pipe is dismounted, the oil pipe threads are scrapped when the oil pipe is serious, the connection joints are required to be re-processed, and manpower and material resources are wasted.

Disclosure of Invention

The utility model discloses to foretell threaded connection pipe end pressure testing because of the too big technical problem that causes of the screw thread damage of the interior external screw thread moment of torsion of oil pipe, provide one kind and can show the oil pipe pressure testing joint that reduces the damage probability of the interior external screw thread of oil pipe and sealed effectual.

In order to achieve the above object, the utility model discloses a technical scheme be:

the utility model provides an oil pipe pressure test joint, which comprises a male buckle adapter connector and a female buckle adapter connector, wherein the male buckle adapter connector is connected with the female buckle end of an oil pipe, the female buckle adapter connector is connected with the male buckle end of the oil pipe, and a first circular bead which is abutted against the end face of the female buckle end of the oil pipe is circumferentially arranged outside the male buckle adapter connector; a second shoulder abutted against the cross section of the male buckle end of the oil pipe is circumferentially arranged in the female buckle adapter; and sealing elements are arranged on the first shoulder in the circumferential direction and the second shoulder in the circumferential direction.

Preferably, the angle of the first shoulder is 90 ° and the angle of the second shoulder is 90 °.

Preferably, the seal is an O-ring.

Compared with the prior art, the utility model discloses an advantage and beneficial effect lie in:

the utility model provides an oil pipe pressure testing connects utilizes the sealing member to undertake sealed effect, is showing to have reduceed the probability that the internal and external screw thread of oil pipe caused the screw thread to damage because of the moment of torsion is too big.

Drawings

Fig. 1 is a schematic structural view of the oil pipe pressure test joint of the present invention;

in the above figures: 1. a male buckle crossover sub; 11. a first shoulder; 2. a female buckle adapter; 21. a second shoulder; 3. a seal member; 4. a female buckle end of the oil pipe; 5. the oil pipe pin end.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in fig. 1, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b): as shown in fig. 1, the present embodiment exemplifies an oil pipe pressure test connector, which includes a male buckle adapter 1 connected to a female buckle end 4 of an oil pipe, and a female buckle adapter 2 connected to a male buckle end 5 of the oil pipe, wherein a first shoulder 11 abutted to an end surface of the female buckle end 4 of the oil pipe is circumferentially arranged outside the male buckle adapter 1; a second shoulder 21 which is abutted against the section of the oil pipe male buckle end 5 is arranged in the female buckle adapter 2 in the circumferential direction; the first shoulder 11 and the second shoulder 21 are provided with a seal 3 circumferentially. This oil pipe pressure testing connects has add first circular bead 11, second circular bead 21 to set up sealing member 3 in first circular bead 11 circumference and second circular bead 21 circumference, wherein when pin adapter 1 and oil pipe box end 4 threaded connection, oil pipe box end 4 terminal surface and first circular bead 11 and corresponding sealing member 3 contact, reach and set for the moment of torsion value, stop to rotate and tighten the screw thread. In the same way, the end face of the oil pipe pin end 5 is in contact with the second shoulder 21 and the corresponding sealing element 3 to reach a set torque value, the set torque value is 1/2 of the original pressure test value of direct threaded connection, and the probability of thread damage caused by overlarge torque of the internal thread and the external thread of the oil pipe is obviously reduced. This oil pipe pressure testing connects only threaded connection and utilizes threaded connection to guarantee the sealing effect originally, adjusts to first circular bead 11, second circular bead 21 and sealing member 3 and undertakes the sealing effect, and the oil pipe screw thread only undertakes the connection effect to reduce the threaded connection moment of torsion, the resistance of going up to break out reduces, alleviates the damage probability of oil pipe screw thread.

To ensure the sealing effect, the angle of the first shoulder 11 is 90 ° and the angle of the second shoulder 21 is 90 °.

Further, the sealing member 3 is an O-ring.

The working process of the oil pipe pressure test joint comprises the following steps:

the male buckle adapter 1 and the female buckle adapter 2 are respectively connected to a main shaft of a pressure testing head of a trolley of a pressure testing device, trolleys at two ends are moved, the main shaft rotates and is close to two ends of an oil pipe, the male buckle adapter 1 is in threaded connection with a female buckle end 4 of the oil pipe, the female buckle adapter 2 is in threaded connection with a male buckle end 5 of the oil pipe, the end surface of the female buckle end 4 of the oil pipe is in contact with a first shoulder 11 and a corresponding sealing element 3 to achieve a set torque value, the rotation is stopped, the threads are tightened, the end surface of the male buckle end 5 of the oil pipe is in contact with a second shoulder 21 and a corresponding sealing element 3 to achieve the set torque. And (4) testing the pressure according to a normal pressure testing procedure, water pumping, emptying, pressurizing, pressure stabilizing, unloading, shackle disassembling, trolley retreating and the like, and judging whether the pressure testing is qualified.

Claims

1. The utility model provides an oil pipe pressure testing connects, is including being used for pin adapter (1) that links to each other with oil pipe box end (4) to and box adapter (2) that link to each other with oil pipe pin end (5), its characterized in that: a first shoulder (11) which is abutted with the end face of the oil pipe female buckle end (4) is arranged on the outer circumference of the male buckle adapter (1); a second shoulder (21) which is abutted against the section of the oil pipe male buckle end (5) is arranged in the female buckle adapter (2) in the circumferential direction; and sealing elements (3) are arranged on the first shoulder (11) in the circumferential direction and the second shoulder (21) in the circumferential direction.

2. The tubing pressure test joint according to claim 1, characterized in that: the angle of the first shoulder (11) is 90 DEG, and the angle of the second shoulder (21) is 90 deg.

3. The tubing pressure test joint according to claim 1, characterized in that: the sealing element (3) is an O-shaped ring.