Rapid pressure testing device suitable for inner joint coating anti-corrosion pipeline

Abstract

The utility model provides a rapid pressure test device suitable for an inner joint coating anticorrosion pipeline, which is used for carrying out temporary pressure test on a pressure-bearing pipeline and comprises a pressure-bearing flange, a slip device and a bolt, the pressure-bearing flange is arranged at a pipe opening of the pressure-bearing pipeline, a pressure inlet is formed in the central axis of the pressure-bearing flange, and pressure applied by the outside and used for testing is transmitted to the pressure-bearing pipeline through the pressure inlet by utilizing the pressure-bearing flange; the slip device wraps the outer wall of the pressure-bearing pipeline and is used for providing a fixed support for the pressure-bearing pipeline in the testing process; the pressure-bearing flange is tightly connected with the slip device through a bolt so as to ensure that the pressure-bearing flange is tightly attached to the pressure-bearing pipeline in a sealed mode. According to the utility model, the pressure test of the pressure-bearing pipeline can be rapidly tested, the operation time of transporting and returning products to a factory is avoided, meanwhile, the damage to the performance of the pressure-bearing pipeline due to rigid connection such as welding is avoided, the operation cost is greatly reduced, and the construction resources are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pressure testing device of pipeline, especially to the quick pressure testing device suitable for internal jointing and anticorrosion pipeline. BACKGROUND

[0002] After the internal jointing and anticorrosion operation of the oil field and chemical pipeline, the pressure test operation is often needed to the pressure pipeline to ensure the pressure capacity of the pipeline and prevent the medium leakage.

[0003] The general test method and defects are as follows:

[0004] Generally, the overall pressure test is carried out after the pressure test on the fixed pressure testing device of the factory is completed and the on-site operation is completed, but for the sudden situation, such as pipeline repair, pipeline external force damage and the like, temporary pressure test is needed, generally, the pressure test is re-performed by means of dismantling or returning to the factory, thereby the transportation, waiting time cost and influence on the project progress are generated.

[0005] Although the pressure test of the welded flange is also a common method, but the welding is easy to have adverse effect on the pipeline material, appearance and the like, plus many pipeline places have obvious safety hidden danger for the fire, so a quick and safe pressure test method is needed to replace. INVENTION CONTENTS

[0006] The utility model discloses a kind of quick pressure testing devices suitable for internal jointing and anticorrosion pipeline, which can be used in narrow space, operation site without factory pressure test conditions and the like site, and the pressure test of pressure pipeline is quickly tested, which avoids the application of internal jointing and anticorrosion pipeline quick pressure testing device due to the operation time of transportation, returning to factory.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A kind of quick pressure testing device suitable for internal jointing and anticorrosion pipeline, for the temporary pressure test of pressure pipeline, including pressure flange, slip device and bolt;The pressure flange is arranged in the pipe opening of the pressure pipeline, the middle axis of the pressure flange is provided with inlet, and the pressure for testing is applied outside and passed through the inlet and transferred to the pressure pipeline by the pressure flange;The slip device is wrapped on the outer wall of the pressure pipeline, and is used to provide fixed support for the pressure pipeline during testing;The pressure flange and the slip device are tightly connected by bolt, to ensure that the pressure flange is tightly sealed and fitted to the pressure pipeline.

[0009] Preferably, the slip device comprises a slip and a slip seat, the slip is integrally connected with the slip seat; the slip adopts a four-piece cutting structure of a whole circular line cutting, the four pieces of the cutting structure are uniformly distributed on the outer wall of the pressure pipeline in the axial direction of the pressure pipeline, and are used for tightly holding and releasing the outer wall of the pressure pipeline.

[0010] Preferably, the slip adopts a wedge-shaped structure, and the slip seat adopts an upper opening groove matched with the outer shape of the slip.

[0011] Preferably, the wedge-shaped structure of the slip is provided with a stepped structure, the slip seat adopts a groove with an inner stepped surface matched with the stepped structure of the slip; the slip is integrally connected with the groove with the inner stepped surface of the slip seat through the stepped structure matched with the groove, to form the slip device.

[0012] Preferably, the pipe opening of the pressure pipeline is provided with a sealing ring, the bottom of the pressure flange is provided with a sealing ring groove matched with the sealing ring, the pipe opening of the pressure pipeline is in contact with the sealing ring groove of the bottom of the pressure flange through the sealing ring, to realize the sealed connection of the pressure pipeline and the pressure flange.

[0013] Preferably, the top of the slip of the slip device is provided with a slip surface, and the slip surface is reserved 200mm away from the pipe opening of the pressure pipeline.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model is applicable to various occasions, is fast to assemble and disassemble, does not damage the connection equipment of pipeline body, and is fast to carry out pipeline pressure test connection.

[0016] 2. The slip device provided by the utility model adopts a quick connection form, can be used in pipeline pressure test connection without moving the pipeline body, damaging the pipeline structure, and in a small space and simple place.

[0017] 3. Compared with the prior art, the utility model has the following remarkable features: the utility model has the advantages of quickness, simplicity, convenience of installation and disassembly, wide adaptability to specific environment and construction site, no damage to pipeline protection during installation and disassembly, and significantly improved work efficiency.

[0018] 4. The utility model is a quick pressure test device, which is a detachable tool for quickly pressure testing pressure pipelines under various working conditions (especially under emergency working conditions).

[0019] In summary, the utility model discloses can be in narrow space, the operation site such as not having the factory pressure test condition, the pressure test of quick inspection pressure pipeline, avoid the operation time of product because of transportation, return factory, simultaneously do not produce because the performance damage of welding etc. Hard connection to pressure pipeline, greatly reduce the operation cost, save construction resources. The oil, gas pipeline needing detection is connected and sealed quickly, guarantee the accuracy of pressure test. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A cross-sectional structure schematic view of a quick pressure testing device suitable for internal supplementary opening anticorrosion pipeline is provided for the embodiment of the utility model.

[0021] The serial numbers in the drawing are as follows:

[0022] 1, pressure inlet; 2, pressure flange; 3, sealing ring; 4, bolt; 5, slip; 6, slip seat; 7, pressure pipeline; 8, sealing ring groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0024] As shown in the drawings, a quick pressure testing device suitable for internal supplementary opening anticorrosion pipeline is provided for the embodiment, which is used for temporary pressure test on the pressure pipeline 7 and comprises a pressure flange 2, a slip device and a bolt 4. Figure 1 The pressure flange 2 is arranged at the pipe opening of the pressure pipeline 7, and the pressure flange 2 is provided with the pressure inlet 1 on the central axis, and the pressure for testing is applied from outside and is transmitted to the pressure pipeline 7 through the pressure inlet 1 by the pressure flange 2.

[0025] The slip device is wrapped on the outer wall of the pressure pipeline 7 and is used for providing a fixed support for the pressure pipeline 7 during the test. The slip device comprises a slip 5 and a slip seat 6, and the slip 5 is integrally connected with the slip seat 6. The slip 5 adopts a four-piece cutting structure of a whole circle line cutting, and the four-piece cutting structure is evenly distributed on the outer wall of the pressure pipeline 7 in the axial direction of the pressure pipeline 7 and is used for tightly holding and releasing the outer wall of the pressure pipeline 7. The slip 5 adopts a wedge-shaped structure, the wedge-shaped structure is provided with a stepped structure, the slip seat 6 adopts a groove with an inner stepped surface matched with the stepped structure of the slip 5, and the slip 5 is matched with the groove with the inner stepped surface of the slip seat 6 through the stepped structure and is integrally connected to form the slip device.

[0026] The pressure flange 2 is tightly connected with the slip device through the bolt 4 and is used for ensuring that the pressure flange 2 is tightly sealed and fitted to the pressure pipeline 7.

[0027]

[0028] ​The sealing ring 3 is arranged on the pipe opening of the pressure pipeline 7, and the bottom of the pressure flange 2 is provided with a sealing ring groove 10 matched with the sealing ring 3; the pipe opening of the pressure pipeline 7 is in contact with the bottom sealing ring groove 10 of the pressure flange 2 through the sealing ring 3, so that the pressure pipeline 7 and the pressure flange 2 are sealingly connected.

[0029] Further, in the present embodiment, the top of the slip 5 of the slip device is provided with a slip face, and when the slip device is installed at the position of the pressure pipeline 7, the slip face needs to be kept at a distance of 200 mm from the pipe opening of the pressure pipeline 7.

[0030] The application method of the utility model is as follows:

[0031] Step S1: preliminary preparation:

[0032] Step S11: the pressure pipeline 7 is a pipeline to be tested, before installation, the port is cut and polished smooth, without burrs, so as to better contact the O-shaped ring;

[0033] Step S12: the whole circle line is cut into four cutting structures of four equal parts, each cutting structure adopts the wedge-shaped structure of the slip 5, the wedge-shaped structure is cut again to form a stepped surface, which is matched with the groove of the stepped surface in the slip seat 6 and is connected into an integral whole to form the slip device;

[0034] Step S2: the slip device is sleeved on the polished pressure pipeline 7, and during installation, the slip face of the slip device is kept at a length of about 200 mm from the pipe opening of the pressure pipeline 7;

[0035] Step S3: the sealing ring 3 is installed on the pipe opening of the pressure pipeline 7, and the pressure flange 2 is installed on the sealing ring 3, so that the sealing ring groove 8 of the pressure flange 2 is in contact with the sealing ring 3;

[0036] Step S4: the bolt 4 is respectively inserted into the threaded holes reserved in the slip seat 6 of the slip device and the pressure flange 2, and the relative position between the slip seat 6 and the pressure flange 2 is fastened by the nut;

[0037] If the slip 5 of the slip device is displaced during the tightening of the bolt 4, the slip 5 can be knocked in the direction of the slip seat 6 by slight knocking, and the bolt 4 is tightened according to the specified torque when the slip 5 is not displaced;

[0038] Step S5: the inlet pressure port 1 at the top of the pressure flange 2 is connected to the test pressure, so that the pressure pipeline 7 is tested;

[0039] Step S6: after the test is completed, the pressure is released, the nut on the bolt 4 connecting the pressure flange 2 and the slip seat 6 is removed, the bolt 4 and the pressure flange 2 are removed in turn, the slip seat 6 is knocked by a hammer, the connection between the slip seat 6 and the slip 5 is contacted, and the slip seat 6 and the slip 5 are taken out after being loosened, and the operation is completed.

[0040] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A rapid pressure testing device for anticorrosive pipelines with internal gaskets, for temporary pressure testing of pressure-bearing pipelines (7), characterized in that, Including pressure flange (2), slip device and bolt (4); The pressure flange (2) is arranged at the pipe opening of the pressure pipeline (7), and the middle axis of the pressure flange (2) is provided with a pressure inlet (1), and the pressure applied externally for testing is transmitted to the pressure pipeline (7) by the pressure flange (2) through the pressure inlet (1); The slip device is wrapped on the outer wall of the pressure pipeline (7), and is used for providing a fixed support for the pressure pipeline (7) during testing; The pressure flange (2) is tightly connected with the slip device through the bolt (4), so as to ensure that the pressure flange (2) is tightly sealed and matched with the pressure pipeline (7).

2. The quick pressure testing device for the anticorrosive pipeline with internal joint according to claim 1, characterized in that, The slip device comprises a slipper (5) and a slipper seat (6), the slipper (5) and the slipper seat (6) are integrally connected; the slipper (5) adopts a four-piece cutting structure of a whole circular line cutting, and the four-piece cutting structure is uniformly distributed on the outer wall of the pressure pipeline (7) in the axial direction of the pressure pipeline (7), and is used for tightly holding and releasing the outer wall of the pressure pipeline (7).

3. The device for quick pressure testing of the anticorrosive pipeline with internal joint according to claim 2, characterized in that The slipper (5) adopts a wedge-shaped structure, and the slipper seat (6) adopts an upper opening groove matched with the shape of the slipper (5).

4. The quick pressure testing device for the anticorrosive pipeline with internal joint according to claim 3, characterized in that, The wedge-shaped structure of the slipper (5) is provided with a stepped structure, the slipper seat (6) adopts a groove with an inner stepped surface matched with the stepped structure of the slipper (5); the slipper (5) is matched with the groove with the inner stepped surface of the slipper seat (6) through the stepped structure and is integrally connected to form the slipper device.

5. The device for pressure testing of the anticorrosive pipeline with internal joint according to claim 1, characterized in that, The pipe opening of the pressure pipeline (7) is provided with a sealing ring (3), the bottom of the pressure flange (2) is provided with a sealing ring groove (10) matched with the sealing ring (3), the pipe opening of the pressure pipeline (7) is in contact with the bottom sealing ring groove (10) of the pressure flange (2) through the sealing ring (3), so as to realize the sealing connection between the pressure pipeline (7) and the pressure flange (2).

6. The device for pressure testing of the internal joint of the anticorrosive pipeline according to claim 1, characterized in that, The top of the slipper (5) of the slipper device is provided with a slipper surface, and the slipper surface is 200mm away from the pipe opening of the pressure pipeline (7).

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