Anti-jump device used in oil pipe air seal detection

Abstract

The present invention relates to the technical field of sealing detection equipment, and in particular to an anti-jump device used in oil pipe gas sealing detection. It comprises: a cylinder and a blocking part; the cylinder is a through cylinder with openings at both ends, and the outer wall of the first end of the cylinder is provided with an external thread for connecting with the internal thread of the oil pipe coupling; the blocking part is detachably connected or rotatably connected to the second end of the cylinder; wherein, when the blocking part and the second end of the cylinder are in the first connection state, the blocking part is horizontally blocked at the opening of the second end of the cylinder, partially blocking the opening of the second end of the cylinder, and when the blocking part and the second end of the cylinder are in the second connection state, the blocking part releases the partial blocking of the opening of the second end of the cylinder. The blocking part of the anti-jump device used in oil pipe gas sealing detection can be in the first connection state with the cylinder, and partially blocks the opening of the cylinder, which can prevent the air tightness detection device from jumping out of the oil pipe, while ensuring that there is a suitable space for the gas pipeline and the steel cable to pass through.

Description

Technical Field

[0001] The invention relates to the technical field of sealing detection equipment, in particular to an anti-jump device used in oil pipe gas sealing detection. Background Art

[0002] The oil pipe is an important pipeline tool in oil and gas production. It needs to have good air tightness, so the oil pipe needs to be tested for air tightness.

[0003] The oil pipe air tightness test is to place the test tool at the upper and lower ends of the thread inside the oil pipe to form a closed space, then use a booster to pressurize the test gas and inject it into the closed space, pressurize it again to the measured pressure and maintain it for a certain period of time. In this process, the sealing performance of the oil pipe is tested.

[0004] However, during the pressure relief stage after the test is completed, the upper and lower rubber cylinders may not be unsealed at the same time in actual working conditions, resulting in the formation of an annular high-pressure area between the test tool and the oil pipe. This causes the test tool to "jump" out of the oil pipe under the action of pressure, that is, fly out of the oil pipe under the action of pressure, which may easily damage the test tool or accidentally injure the staff. Summary of the invention

[0005] The main purpose of the present invention is to provide an anti-jump device with a new structure for oil pipe air tightness detection, so as to solve the above technical problems.

[0006] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions. According to the present invention, an anti-jump device for oil pipe gas seal detection comprises:

[0007] A cylinder, wherein the cylinder is a through cylinder with two ends opened, and an outer wall of a first end of the cylinder is provided with an external thread for connecting with an internal thread of an oil pipe coupling;

[0008] a blocking portion, the blocking portion being detachably connected or rotatably connected to the second end of the cylinder;

[0009] Wherein, when the blocking portion and the second end of the cylinder are in a first connection state, the blocking portion blocks the opening of the second end of the cylinder horizontally to partially cover the opening of the second end of the cylinder; when the blocking portion and the second end of the cylinder are in a second connection state, the blocking portion releases the partial covering of the opening of the second end of the cylinder.

[0010] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0011] Optionally, in the aforementioned anti-jump device for oil pipe air tightness detection, the cylinder is stepped, including a first-step cylinder and a second-step cylinder, and the diameter of the first-step cylinder is smaller than the diameter of the second-step cylinder;

[0012] Among them, the first-step cylinder is the part extending from the first end of the cylinder body to the second end, and the outer wall of the first-step cylinder is provided with the external thread. When the cylinder body is connected to the oil pipe coupling, the first-step cylinder is threadedly connected to the oil pipe coupling, and the second-step cylinder is located outside the interface of the oil pipe coupling.

[0013] Optionally, in the aforementioned anti-jump device for oil pipe air tightness detection, the outer wall of the second-stage cylinder of the cylinder is provided with through holes penetrating through both sides of the cylinder;

[0014] The blocking portion comprises a latch which is detachably plugged into the through hole.

[0015] Optionally, in the aforementioned anti-jump device for oil pipe air tightness detection, the blocking part further comprises a flexible connecting piece and a limiting piece, the first end of the connecting piece is connected to the first end of the latch, and the second end of the connecting piece is connected to the limiting piece;

[0016] Wherein, a limiting hole is arranged at the second end of the latch pin, and the limiting member is detachably connected to the limiting hole.

[0017] Optionally, in the aforementioned anti-jump device for oil pipe air tightness detection, the connecting piece is a connecting rope or an elastic strip;

[0018] The limiting member is one of a spring clip, a bolt or a tapered pin.

[0019] Optionally, in the aforementioned anti-jump device for oil pipe air-tightness detection, the blocking part further includes two plug-in components, plug-in holes are respectively arranged at both ends of the plug pin, and the two plug-in components are respectively detachably plugged into the two plug-in holes.

[0020] Optionally, in the aforementioned anti-jump device for oil pipe air tightness detection, an elastic supporting portion is provided on the side wall of the first end of the pin, and after the second end of the pin is inserted into the through hole and extends a preset distance from the through hole on one side of the cylinder, the elastic supporting portion presses into the through hole on the other side of the cylinder to limit the pin.

[0021] Optionally, in the aforementioned anti-jump device for oil pipe air tightness detection, a bolt is provided on one side of the outer wall of the second-stage cylinder;

[0022] The blocking part includes a rod body and a bolt ring, the first end of the rod body is hinged to the end of the second end of the cylinder body, and the connection position is located on the side opposite to the outer wall where the bolt column is located, and the second end of the rod body is rotatably connected to the bolt ring;

[0023] Wherein, when the blocking portion and the second end of the cylinder are in the first connection state, the second end of the rod body rotates to the side of the bolt column, and the bolt ring is sleeved with the bolt column.

[0024] Optionally, in the aforementioned anti-jump device for oil pipe air tightness detection, threaded holes penetrating through both sides of the cylinder are provided on the outer wall of the second-stage cylinder;

[0025] The blocking portion is a bolt. When the blocking portion and the second end of the cylinder are in a first connection state, the bolt is inserted into the threaded hole and connected to the threaded hole.

[0026] By means of the above technical solution, the anti-jump device for oil pipe air tightness detection of the present invention has at least the following advantages:

[0027] The anti-jump device for oil pipe air tightness detection provided by the embodiment of the present invention includes a cylinder and a blocking part, and the cylinder is set as a through cylinder with openings at both ends, so that after the cylinder is connected to the internal thread of the oil pipe coupling, the connectivity between the opening of the oil pipe coupling and the oil pipe can be guaranteed, so that the air tightness detection device can enter the oil pipe through the cylinder, and will not affect the placement of the air tightness detection device. In addition, the blocking part can be in a first connection state and a second connection state with the cylinder. In the first connection state, the blocking part blocks part of the opening of the cylinder, which can prevent the air tightness detection device from jumping out of the oil pipe, while ensuring that there is a suitable space for the gas pipeline and the steel cable connecting the air tightness detection device to pass through. In the second connection state, the opening of the cylinder is completely unblocked by the blocking part, and the air tightness detection device can pass through, that is, it does not affect the placement of the air tightness detection device in the oil pipe.

[0028] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a connection between an anti-jump device and an oil pipe coupling for oil pipe gas sealing detection proposed by an embodiment of the present invention;

[0030] Figure 2 It is a structural schematic diagram of a cylinder of an anti-jump device for oil pipe air tightness detection provided by an embodiment of the present invention;

[0031] Figure 3 It is a structural schematic diagram of a blocking portion of an anti-jump device for oil pipe air-tightness detection provided by an embodiment of the present invention;

[0032] Figure 4It is a structural schematic diagram of another anti-jump device for oil pipe air tightness detection proposed in an embodiment of the present invention.

[0033] Figure 1-Figure 4 The corresponding bid numbers are:

[0034] 1-cylinder body, 11-external thread, 12-first-stage cylinder, 13-second-stage cylinder, 14-bolt, 15-through hole, 2-blocking part, 21-pin, 22-connecting piece, 23-limiting piece, 24-rod body, 25-bolt ring, 3-oil pipe, 4-air tightness detection device, 5-steel cable, 6-oil pipe coupling. DETAILED DESCRIPTION

[0035] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation, structure, features and effects of the anti-jump device for oil pipe gas seal detection proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0036] like Figure 1-Figure 3 As shown, an anti-jump device for oil pipe gas sealing detection proposed in an embodiment of the present invention comprises: a cylinder 1 and a blocking part 2; the cylinder 1 is a through cylinder with openings at both ends, and the outer wall of the first end of the cylinder 1 is provided with an external thread 11 for connecting with the internal thread of the oil pipe coupling 6; the blocking part 2 is detachably connected or rotatably connected to the second end of the cylinder 1; wherein, when the blocking part 2 and the second end of the cylinder 1 are in a first connection state, the blocking part 2 blocks the opening of the second end of the cylinder 1 horizontally, and partially blocks the opening of the second end of the cylinder 1; when the blocking part 2 and the second end of the cylinder 1 are in a second connection state, the blocking part 2 releases the partial blocking of the opening of the second end of the cylinder 1.

[0037] Specifically, the cylinder 1 can be made of plastic material, and the external thread 11 on the outer wall of the cylinder 1 can also be integrally formed with the cylinder 1. In this case, the specific structure of the cylinder 1 can refer to the structure of the wire guard. The outer diameter of the cylinder 1 needs to match the inner diameter of the oil pipe coupling 6 to ensure that the two can be threadedly connected. The wall thickness of the cylinder 1 cannot be too thick, and it is necessary to ensure that the cylinder 1 has an inner diameter channel of sufficient size for the air tightness detection device 4 to pass through. In addition, the external thread 11 on the outer wall of the cylinder 1 can be an external thread 11 of the entire outer wall extending from the first end to the second end, or it can be an external thread 11 of a portion of the outer wall, which can be set according to actual practical needs.

[0038] The blocking portion 2 is a structure for blocking a portion of the second end opening of the cylinder 1. It can be a combination of multiple parts or a single part, as long as it can be rotatably connected or detachably connected to the second end of the cylinder 1 and can have two connection states with the cylinder 1, namely, in the first connection state, the portion of the second end opening of the cylinder 1 needs to be blocked to prevent the air-tightness detection device 4 from jumping out of the oil pipe 3, and in the second connection state, the blocking of the second end opening of the cylinder 1 is released so that the air-tightness detection device 4 can smoothly pass through the cylinder 1 and be lowered into the oil pipe 3.

[0039] The anti-jump device for oil pipe air tightness detection provided by the embodiment of the present invention comprises a cylinder 1 and a blocking portion 2, and the cylinder 1 is set as a through cylinder with openings at both ends, so that after the cylinder 1 is connected to the internal thread of the oil pipe coupling 6, the connectivity between the opening of the oil pipe coupling 6 and the oil pipe 3 can be ensured, so that the air tightness detection device 4 can enter the oil pipe 3 through the cylinder 1, and will not affect the placement of the air tightness detection device 4. In addition, the blocking portion 2 can be in a first connection state and a second connection state with the cylinder 1. In the first connection state, the blocking portion 2 blocks part of the opening of the cylinder 1, which can prevent the air tightness detection device 4 from jumping out of the oil pipe 3, while ensuring that there is a suitable space for the gas pipeline and the steel cable 5 connected to the air tightness detection device 4 to pass through, and in the second connection state, the opening of the cylinder 1 is completely not blocked by the blocking portion 2, and the air tightness detection device 4 can pass through, that is, it does not affect the placement of the air tightness detection device 4 in the oil pipe 3.

[0040] like Figure 1-Figure 3 As shown, in a specific implementation, the barrel 1 can be a through barrel with a uniform diameter of the outer wall, and the external thread 11 can extend from the first end of the barrel 1 to the second end, so that both ends of the barrel 1 can be used as an end that extends into and is connected to the oil pipe coupling 6. Alternatively, the barrel 1 can also be stepped, and considering the connection with the oil pipe coupling 6 and the need to connect the blocking part 2 at the second end of the barrel 1, it is preferred that the barrel 1 is set to be stepped, and the barrel 1 includes a first step barrel 12 and a second step barrel 13, and the diameter of the first step barrel 12 is smaller than the diameter of the second step barrel 13; wherein the first step barrel 12 is a portion extending from the first end of the barrel 1 to the second end, and the outer wall of the first step barrel 12 is provided with the external thread 11, and when the barrel 1 is connected to the oil pipe coupling 6, the first step barrel 12 is threadedly connected to the oil pipe coupling 6, and the second step barrel 13 is located outside the interface of the oil pipe coupling 6.

[0041] Specifically, by setting the cylinder 1 in a stepped shape and setting the external thread 11 on the outer wall of the first-step cylinder 12 with a smaller diameter, when the cylinder 1 is connected to the oil pipe coupling 6, it can stop when the thread is engaged with the second-step cylinder 13 and fits with the opening of the oil pipe coupling 6, that is, the stepped setting can play a limiting function, and at the same time enable the second-step cylinder 13 to be located outside the opening of the oil pipe coupling 6, so as to facilitate the connection of the blocking part 2 and the switching between the first connection state and the second connection state of the blocking part 2 and the cylinder 1.

[0042] In specific implementation, the embodiments of the present invention provide several preferred specific structures of the blocking portion 2 and the connection methods between the blocking portion 2 and the cylinder 1:

[0043] First, if Figure 1-Figure 3 As shown, a through hole 15 penetrating through both sides of the cylinder 1 is arranged on the outer wall of the second-stage cylinder 13 of the cylinder 1; the blocking portion 2 includes a latch 21, and the latch 21 is detachably plugged into the through hole 15.

[0044] Specifically, the through hole 15 provided throughout can be a circular hole or a polygonal hole, and the latch 21 needs to be compatible with the shape and size of the through hole 15, preferably with a clearance fit. The latch 21 can be inserted into the through hole 15 on one side of the cylinder 1 and extended from the through hole 15 on the other side, partially blocking the opening of the second end of the cylinder 1, so that the opening of the second end of the cylinder 1 has a certain space for the gas pipeline and the wire rope to pass through, and at the same time can prevent the air sealing detection device from popping out of the oil pipe 3.

[0045] Furthermore, the blocking part 2 also includes a flexible connecting member 22 and a limiting member 23, the first end of the connecting member 22 is connected to the first end of the latch 21, and the second end of the connecting member 22 is connected to the limiting member 23; wherein, the second end of the latch 21 is provided with a limiting hole, and the limiting member 23 is detachably connected to the limiting hole.

[0046] Specifically, the connecting member 22 can be a connecting rope or an elastic strip; the limiting member 23 can be a spring clip, a bolt or a tapered pin. In this way, when the first-stage cylinder 12 of the cylinder 1 is connected to the oil pipe coupling 6, the latch 21 of the blocking part 2 is not inserted into the through hole 15 of the second-stage cylinder 13 of the cylinder 1, so that the blocking part 2 and the cylinder 1 are in the second connection state, that is, the latch 21 of the blocking part 2 does not block the opening at the second end of the cylinder 1, and the air tightness detection device 4 can pass through; after the air tightness detection device 4 is placed into the oil pipe 3 through the cylinder 1, the latch 21 is inserted into the through hole 15 of the second-stage cylinder 13. 15, and make the second end of the latch 21 extend out of the cylinder 1 to expose the limiting hole of the latch 21, and then insert the limiting member 23 into the limiting hole to limit the latch 21. At this time, the latch 21 is locked in the through hole 15 of the second-stage cylinder 13 through the joint action of the connecting member 22 and the limiting member 23, ensuring that the latch 21 will not fall off from the through hole 15. The blocking portion 2 and the cylinder 1 are in the first connection state, which can prevent the airtightness detection device 4 from popping out of the oil pipe 3.

[0047] Alternatively, the blocking portion 2 further includes two plug-in connectors (not shown in the figure), plug-in holes are respectively arranged at both ends of the plug pin 21, and the two plug-in connectors are respectively detachably plugged into the two plug-in holes.

[0048] Specifically, plug holes are respectively provided at both ends of the plug pin 21. After the plug pin 21 is inserted into the through hole 15 of the second-stage cylinder 13, the plug holes at both ends of the plug pin 21 are respectively located on both sides of the cylinder body 1, so that the plug pin 21 can be limited after the plug connector is inserted into the plug hole. The plug connector can be a tapered cylinder.

[0049] Alternatively, an elastic supporting portion (not shown in the figure) may be provided on the side wall of the first end of the plug pin 21, such as a spring sheet, a marble, or a rubber layer protruding from the side wall of the first end of the plug pin 21. In this way, after the second end of the plug pin 21 is inserted into the through hole 15 and extends out of the through hole 15 on one side of the cylinder 1 by a preset distance, the elastic supporting portion presses against the through hole 15 on the other side of the cylinder 1 to limit the position of the plug pin 21.

[0050] Second, if Figure 4 As shown, a bolt 14 can be provided on one side of the outer wall of the second-stage cylinder 13; the blocking portion 2 includes a rod 24 and a bolt ring 25, the first end of the rod 24 is hinged to the end of the second end of the cylinder 1, and the connection position is located on the side opposite to the outer wall where the bolt 14 is located, and the second end of the rod 24 is rotatably connected to the bolt ring 25. The bolt 14 can be a cylinder with a circular or polygonal cross section, and the bolt ring 25 needs to have the same cross-sectional shape as the bolt 14, and the size is adapted to the bolt 14 to ensure that the two can be clearance-matched.

[0051] Specifically, the blocking part 2 and the cylinder 1 of the above structure, after the first-stage cylinder 12 of the cylinder 1 is connected to the oil pipe coupling 6, the rod 24 and the bolt ring 25 of the blocking part 2 are stationary, that is, the bolt ring 25 is not connected to the bolt column 14, so that the blocking part 2 and the cylinder 1 are in the second connection state, that is, the rod 24 of the blocking part 2 does not block the opening at the second end of the cylinder 1, and the air tightness detection device 4 can pass through; after the air tightness detection device 4 is put into the oil pipe 3 through the cylinder 1, the rod 24 with the bolt ring 25 is rotated until the bolt ring 25 is located on one side of the bolt column 14, and the bolt ring 25 is sleeved on the bolt column 14, at this time, the blocking part 2 and the cylinder 1 are in the first connection state, and the rod 24 can prevent the air tightness detection device 4 from popping out of the oil pipe 3.

[0052] Third, threaded holes penetrating through both sides of the cylinder body 1 are provided on the outer wall of the second-stage cylinder 13; the blocking portion 2 is a bolt (not shown in the figure), and when the blocking portion 2 and the second end of the cylinder body 1 are in the first connection state, the bolt is passed through the threaded hole and connected to the threaded hole.

[0053] Specifically, the blocking part 2 is set as a bolt, and a threaded hole is set on the wall of the second-stage cylinder 13, which is also a more convenient connection method. It requires that the bolt is adapted to the threaded hole, and the bolt has a sufficient length to be able to extend from the threaded hole on one side of the cylinder 1 and extend from the threaded hole on the other side. The blocking part 2 and the cylinder 1 are detachably connected.

[0054] The specific usage of the blocking part 2 at this time can refer to the above introduction, which will not be repeated here.

[0055] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An anti-jump device for oil pipe air tightness detection, characterized in that: include: A cylinder, wherein the cylinder is a through cylinder with two ends opened, and an outer wall of a first end of the cylinder is provided with an external thread for connecting with an internal thread of an oil pipe coupling; a blocking portion, the blocking portion being detachably connected or rotatably connected to the second end of the cylinder; Wherein, when the blocking portion and the second end of the cylinder are in a first connection state, the blocking portion blocks the opening of the second end of the cylinder horizontally, partially shielding the opening of the second end of the cylinder to prevent the airtightness detection device from jumping out of the oil pipe; when the blocking portion and the second end of the cylinder are in a second connection state, the blocking portion releases the partial shielding of the opening of the second end of the cylinder to allow the airtightness detection device to pass through the cylinder and go down into the oil pipe; the cylinder is stepped, including a first step cylinder and a second step cylinder, and the diameter of the first step cylinder is smaller than the diameter of the second step cylinder; Among them, the first-step cylinder is the part extending from the first end of the cylinder body to the second end, and the outer wall of the first-step cylinder is provided with the external thread. When the cylinder body is connected to the oil pipe coupling, the first-step cylinder is threadedly connected to the oil pipe coupling, and the thread engagement stops when the second-step cylinder is fitted with the opening of the oil pipe coupling, and the second-step cylinder is located outside the interface of the oil pipe coupling.

2. The anti-jump device for oil pipe air tightness detection according to claim 1, characterized in that: The outer wall of the second stage cylinder of the cylinder is provided with through holes penetrating through both sides of the cylinder; The blocking portion comprises a latch which is detachably plugged into the through hole.

3. The anti-jump device for oil pipe air tightness detection according to claim 2, characterized in that: The blocking part further comprises a flexible connecting member and a limiting member, wherein the first end of the connecting member is connected to the first end of the latch, and the second end of the connecting member is connected to the limiting member; Wherein, a limiting hole is arranged at the second end of the latch pin, and the limiting member is detachably connected to the limiting hole.

4. The anti-jump device for oil pipe air tightness detection according to claim 3, characterized in that: The connecting piece is a connecting rope or an elastic strip; The limiting member is one of a spring clip, a bolt or a tapered pin.

5. The anti-jump device for oil pipe air tightness detection according to claim 2, characterized in that: The blocking portion further comprises two plug-in connectors, plug-in holes are respectively arranged at both ends of the plug pin, and the two plug-in connectors are respectively detachably plugged into the two plug-in holes.

6. The anti-jump device for oil pipe air tightness detection according to claim 2, characterized in that: An elastic supporting portion is provided on the side wall of the first end of the plug. After the second end of the plug is inserted into the through hole and extends out of the through hole on one side of the cylinder by a preset distance, the elastic supporting portion presses into the through hole on the other side of the cylinder to limit the plug.

7. The anti-jump device for oil pipe air tightness detection according to claim 1, characterized in that: A bolt is provided on one side of the outer wall of the second-stage cylinder; The blocking part includes a rod body and a bolt ring, the first end of the rod body is hinged to the end of the second end of the cylinder body, and the connection position is located on the side opposite to the outer wall where the bolt column is located, and the second end of the rod body is rotatably connected to the bolt ring; Wherein, when the blocking portion and the second end of the cylinder are in the first connection state, the second end of the rod body rotates to the side of the bolt column, and the bolt ring is sleeved with the bolt column.

8. The anti-jump device for oil pipe air tightness detection according to claim 1, characterized in that: The outer wall of the second-stage cylinder is provided with threaded holes penetrating through both sides of the cylinder body; The blocking portion is a bolt. When the blocking portion and the second end of the cylinder are in a first connection state, the bolt is inserted into the threaded hole and connected to the threaded hole.

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