Carbon dioxide fracturing low-temperature pipeline crack detection device

Abstract

The utility model relates to a crack detection device for a carbon dioxide fracturing low-temperature pipeline, in particular to a crack detection device for a carbon dioxide fracturing pipeline, which belongs to the technical field of crack detection and comprises a stable mounting frame, pressure two-way threaded rods are mounted on two sides of the stable mounting frame, and movable driving structures are mounted at two ends of the pressure two-way threaded rods. A pressure propelling plate is clamped in the stable mounting frame, a pipe end sealing cylinder is embedded in the pressure propelling plate, a sealing connecting ring is mounted on the inner side of the pipe end sealing cylinder, a cylinder end distance adjusting structure is mounted at one end of the pipe end sealing cylinder, and a slotting detection structure is mounted at one end of the pipe end sealing cylinder. The device is suitable for detection of pipelines with different lengths, uniform pressure can be applied to the two ends of the pipeline at the same time, the function of detecting whether the internal crack condition of the pipeline reaches the standard or not is achieved while the pressure resistance of the pipeline is detected, and the two ends of the pipelines with different thicknesses are sealed through cooperation of the sealing connecting rings and the pipe end sealing cylinders. The detection effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to a carbon dioxide fracturing low-temperature pipeline crack detection device, in particular to a carbon dioxide fracturing pipeline crack detection device, belonging to the technical field of crack detection. Background Art

[0002] Carbon dioxide fracturing pipeline is an important part of the oil and gas development process. It involves low temperature and high pressure liquid flow, which can easily cause pipeline cracks and fractures. Existing pipeline detection devices mostly use air tightness detection methods, by injecting gas or liquid into the inner pipe of the sealed pipeline, observing whether there is leakage on the surface, and then drawing a detection conclusion. This method is simple, convenient and intuitive. However, when the two ends of the pipeline need to be sealed, the two ends of the existing structure are compatible with the fixed model of the tube. When clamping and fixing raw materials of different sizes, the clamping structure needs to be replaced. The operation is not flexible and convenient. In addition, the above method cannot detect whether the side wall of the pipeline has non-penetrating internal cracks, and secondary detection is required by other methods, which reduces the efficiency of material detection.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a carbon dioxide fracturing pipeline crack detection device in order to solve the above problems, which has the effect of quickly installing pipelines of different specifications and models and assisting in detecting cracks in the cylinder wall.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a carbon dioxide fracturing pipeline crack detection device comprises a stable installation frame, pressure bidirectional threaded rods are installed on both sides of the stable installation frame, and mobile driving structures are installed at both ends of the pressure bidirectional threaded rods. Pressure push plates are clamped at both ends of the interior of the stable installation frame, and a pipe end sealing cylinder is embedded in the pressure push plate. A sealing connecting ring is installed on the inner side of the pipe end sealing cylinder, a cylinder end distance adjustment structure is installed at one end of the pipe end sealing cylinder, and a gap detection structure is installed at the other end of the pipe end sealing cylinder.

[0006] Furthermore, in order to drive the pressure bidirectional threaded rod to rotate, the mobile driving structure includes a power motor, the power motor is fixedly installed on the upper surface of one end of the stable mounting frame, a driving gear is fixedly installed on the output end of the power motor, and a transmission gear is fixedly installed on one end of the pressure bidirectional threaded rod, and the transmission gear and the driving gear are meshed with each other.

[0007] Further, in order to drive the pressure bi-directional threaded rod to rotate synchronously, the moving drive structure includes a linkage sprocket, which is fixedly installed at one end of the pressure bi-directional threaded rod, and a linkage chain is sleeved and engaged outside the linkage sprocket.

[0008] Further, in order to stably drive the pipe end sealing cylinder to move mirror-symmetrically, both ends of the pressure push plate are slidably clamped inside the stable installation frame, and the two ends of the pressure push plate are respectively threadedly connected to both ends of the pressure bi-directional threaded rod, and one end of the two ends of the pressure push plate is threadedly connected to one end of the pressure bi-directional threaded rod.

[0009] Further, in order to improve the installation efficiency of the device for raw materials, the sealing connection ring includes an arc-shaped fixed frame and an arc-shaped adjustment frame. The arc-shaped fixed frame is fixedly installed on one side of the pipe end sealing cylinder, and one end of the arc-shaped adjustment frame is hinged to the arc-shaped fixed frame.

[0010] Further, in order to seal both ends of the pipeline, a connection buckle is provided at the other end of the arc-shaped adjustment frame, and the connection buckle is slidably clamped with the arc-shaped fixed frame. A positioning airbag is fixedly installed inside the arc-shaped fixed frame, and a packaging airbag is fixedly installed inside the arc-shaped adjustment frame.

[0011] Further, in order to adjust the detection position of one end of the pipeline, the cylinder end distance adjustment structure includes a support sealing sliding plug, which is slidably clamped inside the pipe end sealing cylinder. A plurality of limiting sliding rods are evenly welded on the outside of the support sealing sliding plug. A plurality of limiting sliding holes are evenly opened at one end of the pipe end sealing cylinder. The limiting sliding rods are slidably clamped with the limiting sliding holes, and an electric threaded rod is fixedly installed at the other end of the limiting sliding rod, and the electric threaded rod is threadedly connected to the pipe end sealing cylinder.

[0012] Further, in order to quickly detect the penetration of cracks in the pipeline, the crack detection structure includes a support funnel, which is fixedly installed at one end of the pipe end sealing cylinder. A connecting hose is fixedly installed at the output end of the support funnel. A high-pressure water and gas pump is fixedly installed on the lower side of one end of the stable installation frame, and the output end of the high-pressure water and gas pump is fixedly communicated with the connecting hose.

[0013] The technical effects and advantages of the present utility model: By using the moving drive structure in cooperation with the pressure bi-directional threaded rod, the distance between the pressure push plates can be quickly adjusted, so that the device is applicable to the detection of pipelines of different lengths, and uniform pressure can be applied simultaneously from both ends of the pipeline. While detecting the compressive capacity of the pipeline, it has the function of detecting whether the internal crack condition of the pipeline meets the standard. Through the sealing connection ring in cooperation with the pipe end sealing cylinder, both ends of pipelines of different thicknesses can be sealed, improving the detection effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view structural schematic diagram of the present utility model;

[0015] Figure 2 is a rear view structural schematic diagram of the present utility model;

[0016] Figure 3 is a main sectional view structural schematic diagram of the present utility model;

[0017] Figure 4 is an upper sectional view structural schematic diagram of the present utility model;

[0018] Figure 5 is a structural schematic diagram of the sealing connection ring part in the present utility model;

[0019] In the figure: 1, stable installation frame; 2, pressure bidirectional threaded rod; 3, moving drive structure; 301, power motor; 302, transmission gear; 303, linkage sprocket; 304, linkage chain; 4, pressure push plate; 5, pipe end sealing cylinder; 6, sealing connection ring; 601, arc fixed frame; 602, arc adjustment frame; 603, connection buckle; 604, positioning airbag; 605, encapsulation airbag; 7, cylinder end distance adjustment structure; 701, support sealing sliding plug; 702, limit sliding rod; 703, electric threaded rod; 8, slit detection structure; 801, support funnel; 802, connection hose; 803, high-pressure water and gas pump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-5 As shown, for the carbon dioxide fracturing pipeline crack detection device, a stable installation frame 1, pressure bidirectional threaded rods 2 are installed on both sides of the stable installation frame 1, moving drive structures 3 are installed at both ends of the pressure bidirectional threaded rods 2, pressure push plates 4 are clamped at both ends inside the stable installation frame 1, pipe end sealing cylinders 5 are embedded inside the pressure push plates 4, a sealing connection ring 6 is installed inside the pipe end sealing cylinder 5, a cylinder end distance adjustment structure 7 is installed at one end of the pipe end sealing cylinder 5, and a slit detection structure 8 is installed at the other end of the pipe end sealing cylinder 5.

[0022] The mobile driving structure 3 includes a power motor 301, which is fixedly installed on the upper surface of one end of the stable mounting frame 1. A driving gear is fixedly installed on the output end of the power motor 301, which is used to provide power for the rotation of the pressure bidirectional threaded rod 2. A transmission gear 302 is fixedly installed on one end of the pressure bidirectional threaded rod 2. The transmission gear 302 and the driving gear are meshed with each other, which are used to drive the pressure bidirectional threaded rod 2 to rotate. The mobile driving structure 3 includes a linkage sprocket 303, which is fixedly installed on one end of the pressure bidirectional threaded rod 2. A linkage chain 304 is meshed on the outer side of the linkage sprocket 303, which is used to drive the pressure bidirectional threaded rod 2 to rotate synchronously. The two ends of the pressure push plate 4 are slidably connected to the inside of the stable mounting frame 1, and the pressure push plates 4 at the two ends are respectively threadedly connected to the two ends of the pressure bidirectional threaded rod 2, which are used to push the pressure push plate 4 to move in a mirror image. The two ends of the pressure push plate 4 are threadedly connected to one end of the pressure bidirectional threaded rod 2, which are used to apply the same thrust to the two ends of the pressure push plate 4.

[0023] The sealing connection ring 6 includes an arc-shaped fixed frame 601 and an arc-shaped adjustment frame 602. The arc-shaped fixed frame 601 is fixedly installed on one side of the pipe end sealing tube 5. One end of the arc-shaped adjustment frame 602 is hinged to the arc-shaped fixed frame 601 for quickly opening and closing the sealing connection ring 6. The other end of the arc-shaped adjustment frame 602 is provided with a connecting buckle 603. The connecting buckle 603 and the arc-shaped fixed frame 601 are slidably engaged with each other for fixing the position of the arc-shaped adjustment frame 602. A positioning airbag 604 is fixedly installed inside the arc-shaped fixed frame 601, and a packaging airbag 605 is fixedly installed inside the arc-shaped adjustment frame 602 for tightly connecting with the outer surface of the pipeline.

[0024] The tube end distance adjustment structure 7 includes a supporting sealing plug 701, which is slidably engaged with the inside of the tube end sealing tube 5 and is used to seal one end of the tube end sealing tube 5 and support one end of the pipeline material. A limiting slide rod 702 is evenly welded to the outside of the supporting sealing plug 701, and a limiting slide hole is evenly opened at one end of the tube end sealing tube 5. The limiting slide rod 702 and the limiting slide hole are slidably engaged with each other. An electric threaded rod 703 is fixedly installed at the other end of the limiting slide rod 702. The electric threaded rod 703 and the tube end sealing tube 5 are threadedly connected to each other and are used to adjust the supporting position of the electric threaded rod 703.

[0025] The seam detection structure 8 includes a supporting funnel 801, which is fixedly installed at one end of the pipe end sealing tube 5 and is used for gas transmission and supporting one end of the pipeline. A connecting hose 802 is fixedly installed at the output end of the supporting funnel 801, and a high-pressure water gas pump 803 is fixedly installed on the lower side of one end of the stable installation frame 1. The output end of the high-pressure water gas pump 803 and the connecting hose 802 are fixedly connected to each other and are used to infuse detection materials into the interior of the pipeline.

[0026] When the utility model is in use, the user places the device at an appropriate position and electrically connects it to an external power source, selects a detection pipeline, opens the tube end distance adjustment structure 7 to adjust the distance between the opening of the tube end sealing tube 5 and the supporting sealing slide plug 701, and the electric threaded rod 703 rotates and generates a spiral force between the tube end sealing tube 5 to push the electric threaded rod 703 to drive the limiting slide rod 702 to extend inside and outside the tube end sealing tube 5 until the supporting sealing slide plug 701 reaches an appropriate position.

[0027] The user places the two ends of the pipe inside the pipe end sealing tube 5 respectively, and seals the opening of the pipe end sealing tube 5 through the sealing connecting ring 6, and rotates the arc-shaped adjustment plate to drive the inner surface of the packaging airbag 605 to fit tightly with the pipe, so that the outer side of the packaging airbag 605 and the positioning airbag 604 fit tightly with each other, and the inner surface of the positioning airbag 604 and the outer surface of the pipe fit tightly with each other, thereby realizing rapid sealing of the two ends of pipes of different diameters. The user turns on the high-pressure water vapor pump 803 to infuse detection gas or liquid into the interior of the pipe through the support funnel 801, and observes whether there is water vapor leakage on the outer surface of the pipe, thereby realizing rapid detection of gaps on the pipe.

[0028] The pressure bidirectional threaded rod 2 is driven to rotate synchronously by the mobile driving structure 3, and then the pressure pushing plate 4 is pushed to move in a mirror image, and pressure is applied from both ends of the pipeline until the pressure reaches the pipeline force standard. When there is a large internal crack inside the side wall of the pipeline, the pipeline will crack outward from the internal crack position under the action of pressure, thereby assisting in the detection of unqualified gaps in the side wall of the pipeline.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended 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 be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0030] 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 carbon dioxide fracturing low-temperature pipeline crack detection device, comprising a stable mounting frame (1), characterized in that: Pressure bidirectional threaded rods (2) are installed on both sides of the stable installation frame (1), and movable driving structures (3) are installed on both ends of the pressure bidirectional threaded rods (2). Pressure pushing plates (4) are clamped at both ends of the interior of the stable installation frame (1), and a pipe end sealing cylinder (5) is embedded in the interior of the pressure pushing plate (4). A sealing connection ring (6) is installed on the inner side of the pipe end sealing cylinder (5), a cylinder end distance adjustment structure (7) is installed on one end of the pipe end sealing cylinder (5), and a gap detection structure (8) is installed on the other end of the pipe end sealing cylinder (5).

2. The carbon dioxide fracturing low-temperature pipeline crack detection device according to claim 1 is characterized in that: The mobile driving structure (3) comprises a power motor (301), the power motor (301) is fixedly mounted on the upper surface of one end of the stable mounting frame (1), a driving gear is fixedly mounted on the output end of the power motor (301), a transmission gear (302) is fixedly mounted on one end of the pressure bidirectional threaded rod (2), and the transmission gear (302) and the driving gear are meshed with each other.

3. The carbon dioxide fracturing low-temperature pipeline crack detection device according to claim 1 is characterized in that: The mobile driving structure (3) comprises a linkage sprocket (303), wherein the linkage sprocket (303) is fixedly mounted on one end of the pressure bidirectional threaded rod (2), and a linkage chain (304) is sheathed and meshed on the outer side of the linkage sprocket (303).

4. The carbon dioxide fracturing low-temperature pipeline crack detection device according to claim 1 is characterized in that: The two ends of the pressure propulsion plate (4) are slidably clamped in the interior of the stable installation frame (1), and the pressure propulsion plates (4) at both ends are respectively threadedly connected to the two ends of the pressure bidirectional threaded rod (2), and the two ends of the pressure propulsion plate (4) are threadedly connected to one end of the pressure bidirectional threaded rod (2).

5. The carbon dioxide fracturing low-temperature pipeline crack detection device according to claim 1 is characterized in that: The sealing connection ring (6) comprises an arc-shaped fixed frame (601) and an arc-shaped adjustment frame (602); the arc-shaped fixed frame (601) is fixedly mounted on one side of the pipe end sealing cylinder (5); one end of the arc-shaped adjustment frame (602) is hingedly connected to the arc-shaped fixed frame (601).

6. The carbon dioxide fracturing low-temperature pipeline crack detection device according to claim 5 is characterized by: The other end of the arc-shaped adjustment frame (602) is provided with a connecting buckle (603), and the connecting buckle (603) and the arc-shaped fixed frame (601) are slidably connected to each other. A positioning airbag (604) is fixedly installed inside the arc-shaped fixed frame (601), and a packaging airbag (605) is fixedly installed inside the arc-shaped adjustment frame (602).

7. The carbon dioxide fracturing low-temperature pipeline crack detection device according to claim 1 is characterized by: The tube end distance adjustment structure (7) comprises a supporting sealing slide plug (701), the supporting sealing slide plug (701) is slidably engaged with the inside of the tube end sealing tube (5), a limiting slide rod (702) is uniformly welded to the outside of the supporting sealing slide plug (701), one end of the tube end sealing tube (5) is uniformly provided with a limiting slide hole, the limiting slide rod (702) and the limiting slide hole are slidably engaged with each other, the other end of the limiting slide rod (702) is fixedly installed with an electric threaded rod (703), and the electric threaded rod (703) and the tube end sealing tube (5) are threadedly connected with each other.

8. The carbon dioxide fracturing low-temperature pipeline crack detection device according to claim 1 is characterized by: The seam detection structure (8) comprises a supporting funnel (801), wherein the supporting funnel (801) is fixedly mounted on one end of the pipe end sealing cylinder (5), a connecting hose (802) is fixedly mounted on the output end of the supporting funnel (801), a high-pressure water air pump (803) is fixedly mounted on the lower side of one end of the stable mounting frame (1), and the output end of the high-pressure water air pump (803) and the connecting hose (802) are fixedly connected to each other.

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