Combined hub pressure test device for subsea pipeline

Abstract

The utility model discloses a combined hub pressure test device for a subsea pipeline, which comprises a pressure test table, a clamping assembly is arranged on the pressure test table and comprises an upper clamping mechanism for clamping an outer hub short section and a lower clamping mechanism for clamping an inner hub short section, the upper clamping mechanism is connected with a lifting device, and the lower clamping mechanism is connected with a lower clamping mechanism. A closed cavity can be formed among the inside of the outer side hub short section, the inside of the inner side hub short section and the clamping assembly, and the lower end of the closed cavity is connected with a liquid supply device; the utility model relates to a combined hub pressure test device for a subsea pipeline, which can test the pressure of a combined hub and ensure the quality of the combined hub.

Description

Technical Field

[0001] The utility model relates to a combined hub pressure testing device for submarine pipelines. Background Art

[0002] The existing patent authorization announcement number is CN 215580312 U. The submarine cable joint includes an outer hub short section, an inner hub short section and a stepped sealing ring. The inner hub short section is fixedly connected to the inner hub short section via the stepped sealing ring. A first positioning clamping section is provided around the outer portion of the outer hub short section, and a second positioning clamping section is provided around the outer portion of the inner hub short section.

[0003] During the use of the combined hub, after the first positioning card section and the second positioning card section are positioned and fixed by the clamping connector, the clamping connector is driven by a jack to press the inner hub short section and the outer hub short section together. When using the combined hub in the high-pressure and complex environment of the seabed, it must have good sealing and connection stability. In order to ensure the quality of the combined hub, the combined hub needs to be subjected to a sealing pressure test. Summary of the Invention

[0004] The purpose of the utility model is to provide a combined hub pressure test device for submarine pipelines, comprising a pressure test platform, on which a clamping assembly, a lifting device and a liquid supply device are provided; the clamping assembly comprises an upper clamping mechanism for clamping an outer hub pup section and a lower clamping mechanism for clamping an inner hub pup section, the lower clamping mechanism being arranged on the pressure test platform, the upper clamping mechanism being connected to a lifting device for driving it toward or away from the lower clamping mechanism, a closed cavity being formed between the interiors of the outer hub pup section and the inner hub pup section and the clamping assembly, and the lower end of the closed cavity being connected to the liquid supply device via a liquid infusion tube.

[0005] Preferably, the upper clamping mechanism includes a mounting plate, the bottom surface of the mounting plate is provided with an upper plug and a first clamping claw, the first clamping claw is adapted to the first positioning clamping joint of the outer hub short section, and the upper plug is sealed with the upper end of the outer hub short section.

[0006] Preferably, the lower clamping mechanism includes a lower plug and a second clamping jaw, and the lower plug and the second clamping jaw are arranged on the pressure test platform. The lower plug is sealed with the lower end of the inner hub short section, and the second clamping jaw is adapted to the second positioning clamping joint of the inner hub short section.

[0007] Preferably, the lifting device includes a support frame, on which a lifting cylinder and two guide rods vertically distributed on both sides of the lifting cylinder are provided. The output end of the lifting cylinder is fixedly connected to the mounting plate, and the guide rods are passed through both ends of the mounting plate. A limit block is provided at the lower end of the guide rod.

[0008] Preferably, the liquid supply device includes a water tank and a water pump. The water tank is located below the pressure test bench. One end of the infusion tube is connected to the water tank, and the other end of the infusion tube passes through the lower plug and extends into the closed cavity. The water pump is arranged on the infusion tube.

[0009] The advantages and beneficial effects of the utility model are: providing a combined hub pressure testing device for submarine pipelines, which combines the outer hub short section and the inner hub short section by pressing them together, and then sealing the top and bottom ends of the combined section, so that the interiors of the outer hub short section and the inner hub short section form a closed cavity, and after the liquid supply device fills a certain amount of high-pressure liquid into the closed cavity through the liquid infusion tube, it is observed whether liquid appears at the connection between the outer hub short section and the inner hub short section. If no liquid appears, it is proved that the combined hub is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the present utility model.

[0011] Figure 2 It is a schematic diagram of the outer hub short section and the inner hub short section of the utility model. DETAILED DESCRIPTION

[0012] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0013] The technical solution specifically implemented in this utility model is:

[0014] like Figure 1 and Figure 2 As shown, a combined hub pressure test device for a submarine pipeline includes a pressure test platform 1, on which a clamping assembly 2, a lifting device 3 and a liquid supply device 4 are provided; the clamping assembly 2 includes an upper clamping mechanism 21 for clamping an outer hub pup section 5 and a lower clamping mechanism 22 for clamping an inner hub pup section 6, the lower clamping mechanism 22 being arranged on the pressure test platform 1, the upper clamping mechanism 21 being connected to a lifting device 3 for driving it toward or away from the lower clamping mechanism 22, the interior of the outer hub pup section 5, the inner hub pup section 6 and the clamping assembly 2 forming a closed cavity, the lower end of the closed cavity being connected to the liquid supply device 4 via a liquid infusion tube 41.

[0015] The above-mentioned upper clamping mechanism 21 includes a mounting plate 211, and the bottom surface of the mounting plate 211 is provided with an upper plug 213 and a first clamping jaw 212. The first clamping jaw 212 is adapted to the first positioning clamping joint 51 of the outer hub short section 5, and the upper plug 213 is sealed with the upper end of the outer hub short section 5; specifically, the first clamping jaw 212 and the first positioning clamping joint 51 are engaged with each other, and the upper plug 213 is sealed with the upper end of the outer hub short section 5, thereby fixing the outer hub short section 5 to the bottom of the mounting plate 211 and keeping the upper end of the outer hub short section 5 sealed.

[0016] The above-mentioned lower clamping mechanism 22 includes a lower plug 221 and a second clamping jaw 222, and the lower plug 221 and the second clamping jaw 222 are arranged on the pressure test platform 1. The lower plug 221 is sealed with the lower end of the inner hub short section 6, and the second clamping jaw 222 is adapted to the second positioning card section 61 of the inner hub short section 6; specifically, the second clamping jaw 222 and the second positioning card section 61 are engaged with each other, and the upper plug 221 is sealed with the lower end of the inner hub short section 6, thereby fixing the inner hub short section 6 on the pressure test platform 1 and keeping the lower end of the inner hub short section 6 sealed.

[0017] The above-mentioned lifting device 3 includes a support frame 31, on which a lifting cylinder 32 and two guide rods 33 vertically distributed on both sides of the lifting cylinder 32 are provided. The output end of the lifting cylinder 32 is fixedly connected to the mounting plate 211, and the guide rods 33 are passed through the two ends of the mounting plate 211. The lower end of the guide rods 33 is provided with a limit block 34; specifically, the lifting cylinder 32 of the lifting device 3 drives the outer hub short section 5 in the upper clamping mechanism 2 to move up and down, so as to facilitate the press-fit combination of the outer hub short section 5 and the inner hub short section 6.

[0018] The above-mentioned liquid supply device 4 includes a water tank 42 and a water pump 43. The water tank 42 is located below the pressure test platform 1. One end of the infusion tube 41 is connected to the water tank 42, and the other end of the infusion tube 41 passes through the lower plug 221 and extends into the closed cavity. The water pump 43 is arranged on the infusion tube 41.

[0019] When in use, the inner hub short section 6 is clamped and fixed on the pressure test platform 1 through the second clamping jaw 222, and the lower plug 221 on the pressure test platform 1 is plugged at the lower end of the inner hub short section 6. Then the outer hub short section 5 is clamped and fixed to the bottom surface of the mounting plate 211 through the first clamping jaw 212, and the upper plug 213 of the mounting plate 211 is plugged at the upper end of the outer hub short section 5. The lifting cylinder 32 of the lifting device 3 drives the mounting plate 211 to move downward, and the mounting plate 211 drives the outer hub short section 5 to move downward. The hub short section 5 is lowered to complete the sealed connection between the outer hub short section 5 and the inner hub short section 6. A closed cavity can be formed between the inner and outer hub short sections 5 and 6 and the clamping assembly 2. The water pump 43 is started and a certain amount of high-pressure liquid is filled into the closed cavity through the infusion tube 41. Then, it is observed whether there is liquid at the connection between the outer hub short section 5 and the inner hub short section 6. If no liquid appears, it proves that the assembled hub is qualified and the pressure test is completed.

[0020] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A combined hub pressure test device for submarine pipelines, comprising a pressure test platform, characterized in that: The pressure test table is provided with a clamping assembly, a lifting device and a liquid supply device; The clamping assembly includes an upper clamping mechanism for clamping the outer wheel hub short section and a lower clamping mechanism for clamping the inner wheel hub short section. The lower clamping mechanism is arranged on the pressure test platform. The upper clamping mechanism is connected to a lifting device for driving it to move closer to or away from the lower clamping mechanism. A closed cavity can be formed between the interior of the outer wheel hub short section, the inner wheel hub short section and the clamping assembly. The lower end of the closed cavity is connected to the liquid supply device through an infusion tube.

2. A combined hub pressure test device for submarine pipelines according to claim 1, characterized in that: The upper clamping mechanism includes a mounting plate, the bottom surface of which is provided with an upper plug and a first clamping claw, the first clamping claw is adapted to the first positioning clamping joint of the outer hub short section, and the upper plug is sealed with the upper end of the outer hub short section.

3. The combined hub pressure testing device for submarine pipelines according to claim 2, characterized in that: The lower clamping mechanism includes a lower plug and a second clamping jaw, which are arranged on the pressure test platform. The lower plug is sealed with the lower end of the inner hub short section, and the second clamping jaw is adapted to the second positioning clamping joint of the inner hub short section.

4. A combined hub pressure test device for submarine pipelines according to claim 3, characterized in that: The lifting device includes a support frame, on which a lifting cylinder and two guide rods vertically distributed on both sides of the lifting cylinder are provided. The output end of the lifting cylinder is fixedly connected to the mounting plate, and the guide rods are passed through both ends of the mounting plate. A limit block is provided at the lower end of the guide rod.

5. The combined hub pressure testing device for submarine pipelines according to claim 4, characterized in that: The liquid supply device includes a water tank and a water pump. The water tank is located below the pressure test bench. One end of the infusion tube is connected to the water tank, and the other end of the infusion tube passes through the lower plug and extends into the closed cavity. The water pump is arranged on the infusion tube.

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