Tank tanker cargo oil accumulation well structure tightness test tool

Abstract

The invention specifically discloses a tanker cargo oil accumulation well structure tightness test tool, which comprises a cover body, the periphery of the cover body is provided with fixing pieces used for pressing the cover body on a cargo oil accumulation well, the top of the cover body is fixedly provided with a pressure gauge and a gas delivery pipe, and the inner wall of the gas delivery pipe is provided with a chute and a vent groove along the length direction of the gas delivery pipe. A check block is slidably arranged in the air conveying pipe, a sliding block is fixedly arranged on the periphery of the check block, the sliding block is matched with the sliding groove and is slidably connected with the sliding groove, a connecting rod is fixedly arranged on the top of the check block, a piston plate is fixedly arranged on the top of the connecting rod, and the piston plate is slidably connected with the air conveying pipe; a spring is fixedly arranged between the piston plate and the top of the air conveying pipe, magnetic assemblies for fixing the piston plate are arranged on the piston plate and the air conveying pipe, an air inlet pipe communicated with the air conveying pipe is fixedly arranged on the air conveying pipe, and the air inlet pipe is located between the piston plate and the baffle. The connecting pipe is prevented from bursting and being damaged, and the service life of the connecting pipe is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of cargo oil accumulation wells, and in particular to a structural tightness test tool for a cargo oil accumulation well of an oil tanker. Background Art

[0002] In oil tankers or related oil transportation and storage facilities, cargo oil storage wells specifically refer to well-shaped structures used to store and transfer cargo oil. These wells are usually connected to the cargo oil system of the tanker and are used to receive, store and transfer petroleum products. In order to prevent oil leakage, cargo oil storage wells need to be tested for air tightness to verify whether they meet the sealing requirements.

[0003] A Chinese patent document with the announcement number CN210442058U discloses a structural tightness test tool for cargo oil accumulation wells of large tankers, including a sealing plate, a gas pipeline arranged on the sealing plate, a first pressure gauge arranged on the sealing plate, a hose connected to the gas pipeline at one end, and a pressure device connected to the other end of the hose; a plurality of pressing parts are arranged around the sealing plate; the pressure device comprises: a steel pipe, a plurality of valves arranged on the side wall of the steel pipe, and a plurality of the valves are respectively connected to one of the hoses; a gas source is connected to one end of the steel pipe, and a second pressure gauge is connected to the other end of the steel pipe; a gas pipeline is arranged at the connection between the steel pipe and the gas source; and a bracket is arranged at the bottom of the steel pipe. The tightness test of multiple cargo oil accumulation wells can be carried out simultaneously, and the number and cycle of compression test inspections can be carried out.

[0004] The disadvantage of the above-mentioned disclosed solution is that when the cargo oil storage well reaches the experimental pressure, since the pressure in the cargo oil storage well needs to be maintained for testing, and the gas pipeline is not in a sealed state, the pressure inside the hose cannot be relieved, causing the hose to be continuously in a high-pressure state during the experiment, which is prone to bursting, posing a safety hazard and shortening the service life of the hose. Summary of the invention

[0005] The present invention provides a structural tightness test tool for a cargo oil accumulation well of an oil tanker, which can effectively solve the problems in the background technology.

[0006] The present invention provides a structural tightness test tool for a cargo oil storage well of an oil tanker, comprising a cover body, wherein fixing parts for pressing the cover body onto the cargo oil storage well are arranged around the cover body, a pressure gauge and an air pipe are fixedly arranged on the top of the cover body, a slide groove and a ventilation groove are opened on the inner wall of the air pipe along its length direction, and the top of the slide groove is higher than the top of the ventilation groove, a stopper is slidably arranged in the air pipe, a sliding block is fixedly arranged on the outer periphery of the stopper, the sliding block is adapted to the slide groove and is slidably connected to the slide groove, a connecting rod is fixedly arranged on the top of the stopper, a piston plate is fixedly arranged on the top of the connecting rod, the piston plate is slidably connected to the air pipe, a spring is fixedly arranged between the piston plate and the top of the air pipe, and a magnetic component for fixing the piston plate is arranged on the piston plate and the air pipe, an air intake pipe connected with the air intake pipe is fixedly arranged on the air pipe, and the air intake pipe is located between the piston plate and the baffle.

[0007] Furthermore, the fixing member includes a screw rod, which is threadedly connected to the cover body, and a clamping block is threadedly connected to the screw rod, and the clamping block is "C" shaped. An extension plate is fixedly provided on the top of the cargo oil storage well, and the extension plate cooperates with the clamping block to press the cover body.

[0008] Furthermore, an adapter ring is fixedly provided on the bottom of the cover body, and the adapter ring cooperates with the extension plate to position the cover body.

[0009] Furthermore, the adapter ring is fixedly provided with a seal along its periphery, and the seal is sealed with the top of the epitaxial plate.

[0010] Furthermore, the seal is a sealing ring made of rubber material.

[0011] Furthermore, the magnetic assembly includes a magnetic block and an electromagnet. The magnetic block is fixedly arranged on the top of the piston plate, and the electromagnet is fixedly arranged on the top of the air pipe. The electromagnet and the magnetic block cooperate magnetically to fix the piston plate.

[0012] Furthermore, the slide grooves and ventilation grooves are provided in plurality, and the plurality of slide grooves and ventilation grooves are arranged in an array along the circumference of the inner wall of the gas transmission pipe, and the plurality of slide grooves and ventilation grooves are arranged in an interlaced manner.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] Since the inner wall of the gas pipeline is provided with a slide groove and a vent groove along its length, and the top of the slide groove is higher than the top of the vent groove, the air inlet pipe is connected to the external air source through a hose, and the air inlet pipe is supplied with air, and the gas enters the gas pipeline through the air inlet pipe, and the gas enters the cargo oil storage well through the vent groove. As the gas enters the cargo oil storage well, the air pressure gradually increases until the gas cannot pass through the vent groove and enter the cargo oil storage well downward. As the gas continues to enter, the gas pushes the piston plate to move upward, and the piston plate drives the block to move upward. When the block drives the slider to move to the upper end of the slide groove, the block is located above the vent groove. At this time, the block seals the gas pipeline, so that the gas in the cargo oil storage well cannot escape through the gas pipeline, and then the piston plate is fixed with a magnetic component, so that the block keeps the gas pipeline sealed. At this time, the gas pipeline is in a sealed state, so the staff disconnects the gas source and relieves the pressure of the connecting pipe. Avoid the connecting pipe being in a high pressure state during the test, thereby avoiding burst damage to the connecting pipe, increasing the service life of the connecting pipe, and avoiding accidents during the test, thereby improving the safety of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the position of the seal of the present invention.

[0017] Figure 3 It is a schematic diagram of the internal structure of the gas pipeline of the present invention.

[0018] Figure 4 It is a schematic diagram of the connection between the piston plate and the stopper of the present invention.

[0019] Figure 5 It is a schematic diagram of the connection between the stopper and the gas pipe of the present invention.

[0020] Figure 6 It is a schematic diagram of the connection between the stopper and the gas pipe at another angle of the present invention.

[0021] Figure 7 It is a three-dimensional schematic diagram of the cargo oil storage well of the present invention.

[0022] Figure 8 It is a three-dimensional schematic diagram of the test installation state of the present invention.

[0023] In the figure: 1. cover body; 2. adapter ring; 3. seal; 4. screw; 5. clamping block; 6. pressure gauge; 7. air pipe; 8. air inlet pipe; 9. slide groove; 10. ventilation groove; 11. stopper; 12. slider; 13. connecting rod; 14. piston plate; 15. magnet; 16. electromagnet; 17. spring; 18. cargo oil storage well; 19. extension plate. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solution of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figures 1 to 8 As shown, a structural tightness test tool for a cargo oil storage well of a tanker of the present invention comprises a cover body 1, and a plurality of fixing members are evenly arranged on the top of the cover body 1 along the four sides thereof, and the plurality of fixing members press the cover body 1 against the cargo oil storage well 18. The fixing member comprises a screw 4, and the screw 4 is threadedly connected to a threaded hole on the cover body 1, and a clamping block 5 is threadedly connected to the outer periphery of the screw 4, and the clamping block 5 is in a "C" shape. An extension plate 19 is fixedly arranged on the top of the cargo oil storage well 18, and the extension plate 19 extends horizontally outward along the four sides of the cargo oil storage well 18, and the extension plate 19 cooperates with the bottom of the clamping block 5 to press the cover body 1.

[0026] An adapter ring 2 is fixedly provided at the bottom of the cover body 1. The inner wall of the extension plate 19 is flush with the inner wall of the cargo oil storage well 18. The adapter ring 2 is adapted to the extension plate 19, and the adapter ring 2 cooperates with the inner wall of the extension plate 19 to position the cover body 1, preventing the cover body 1 from moving during the process of fixing and pressing the cover body 1. At the same time, the adapter ring 2 cooperates with the inner ring of the extension plate 19 to increase the airtightness between the cover body 1 and the cargo oil storage well 18.

[0027] The adapter ring 2 is fixedly provided with a seal 3 along its periphery. The seal 3 is a sealing ring made of rubber material. The seal 3 is sealed with the top of the extension plate 19 to further increase the airtightness between the cover body 1 and the cargo oil storage well 18 to prevent gas leakage.

[0028] A pressure gauge 6 and an air pipe 7 are fixedly arranged on the top of the cover body 1. The air pipe 7 is a cylindrical structure with a hollow interior, and the top of the air pipe 7 is closed, and its bottom passes through the cover body 1. When the cover body 1 is covered on the cargo oil storage well 18, the pressure gauge 6 and the air pipe 7 are both connected to the inside of the cargo oil storage well 18. The inner wall of the air pipe 7 is provided with a plurality of chutes 9 and vent grooves 10 along its length direction. The plurality of chutes 9 and vent grooves 10 are arranged in an array along the circumference of the inner wall of the air pipe 7, and the plurality of chutes 9 and vent grooves 10 are arranged in an interlaced manner. The top of the chutes 9 is higher than the top of the vent grooves 10.

[0029] A stopper 11 is provided in a sealing and sliding manner inside the gas delivery pipe 7, and a plurality of sliders 12 are fixedly provided on the outer periphery of the stopper 11, and the plurality of sliders 12 correspond to the plurality of slide grooves 9 one by one. The sliders 12 are adapted to the slide grooves 9 and are sealed and slidably connected with the corresponding slide grooves 9, and a connecting rod 13 is fixedly provided on the top of the stopper 11, and a piston plate 14 is fixedly provided on the top of the connecting rod 13, and the piston plate 14 is sealed and slidably connected with the inner wall of the gas delivery pipe 7. An air intake pipe 8 connected thereto is fixedly provided on the gas delivery pipe 7, and the air intake pipe 8 is located between the piston plate 14 and the baffle.

[0030] A spring 17 is fixedly arranged between the piston plate 14 and the top of the gas pipe 7. When the spring 17 is in a natural state, the slider 12 contacts the bottom wall of the slide groove 9. A magnetic component is arranged on the piston plate 14 and the gas pipe 7 to fix the piston plate 14. The magnetic component includes a magnetic block 15 and an electromagnet 16. The magnetic block 15 is fixedly arranged on the top of the piston plate 14. The magnetic block 15 is a magnet with magnetism. The electromagnet 16 is fixedly arranged on the top of the gas pipe 7. The positions of the electromagnet 16 and the magnetic block 15 correspond to each other up and down. The electromagnet 16 and the magnetic block 15 cooperate magnetically to fix the piston plate 14.

[0031] The working principle of the structural tightness test tool for the cargo oil accumulation well of an oil tanker provided by the present invention is as follows:

[0032] When in use, first align the adapter ring 2 at the bottom of the cover body 1 with the wellhead of the cargo oil storage well 18, and then place the cover body 1 on the top of the cargo oil storage well 18. At this time, the outer ring of the adapter ring 2 just fits with the inner ring of the extension plate 19.

[0033] Align the screw 4 with the threaded hole on the cover body 1, screw the screw 4 into the threaded hole, and at the same time, clamp the bottom of the clamping block 5 on the bottom surface of the extension plate 19, and then continue to screw the screw 4 to drive the clamping block 5 to move upward, so that the cover body 1 and the extension plate 19 are in close contact and squeeze the seal 3, so that the cover body 1 can seal the cargo oil storage well 18.

[0034] Then the air inlet pipe 8 is connected to the external air source through a hose, and the air inlet pipe 8 is supplied with air, and the gas enters the air delivery pipe 7 through the air inlet pipe 8. Figure 5 As shown in the figure, at this time, the slider 12 on the stopper 11 is located at the bottom of the slide groove 9, that is, the stopper 11 is located in the middle of the ventilation groove 10, so the gas can enter the cargo oil storage well 18 through the ventilation groove 10.

[0035] As the gas enters the cargo oil storage well 18, the gas pressure gradually increases until the gas cannot pass through the vent groove 10 and enter the cargo oil storage well 18. Then the gas will fill the space between the stopper 11 and the piston plate 14. As the gas continues to enter, the gas pushes the piston plate 14 to move upward and compresses the spring 17 at the same time. The piston plate 14 drives the stopper 11 to move upward through the connecting rod 13. When the stopper 11 drives the slider 12 to move to the upper end of the slide groove 9 (such as Figure 6 As shown in the figure, the block 11 is just located above the ventilation groove 10. At this time, the block 11 seals the gas pipeline 7, so that the gas in the cargo oil storage well 18 cannot escape through the gas pipeline 7.

[0036] At the same time, the electromagnet 16 contacts the magnetic block 15, so that the electromagnet 16 is energized, and the electromagnet 16 generates suction to adsorb the magnetic block 15, so that the block 11 keeps the gas pipe 7 sealed. At this time, the gas pipe 7 is in a sealed state, so the staff can disconnect the gas source and relieve the pressure of the connecting pipe to avoid the connecting pipe from being in a high-pressure state during the test, thereby avoiding burst damage to the connecting pipe, increasing the service life of the connecting pipe, and avoiding accidents during the test process, thereby improving the safety of the test.

[0037] Then, the air tightness of the cargo oil storage well 18 structure can be known according to the change of the pressure value of the pressure gauge 6 within a fixed time.

[0038] After the test is finished, the electromagnet 16 is powered off, and the screw 4 is slowly loosened to allow the gas to leak out slowly. When the air pressure in the cargo oil storage well 18 drops to a certain level, the piston plate 14 is pushed down by the reset force of the spring 17, so that the piston plate 14 pushes the block 11 down, and the block 11 drives the slider 12 to move to the bottom of the chute 9 again. Then the gas in the cargo oil storage well 18 can quickly diffuse out through the gas pipe 7 and the air inlet pipe 8, and then the cover body 1 is removed to facilitate testing of other cargo oil storage wells 18.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A structural tightness test tool for a cargo oil storage well of an oil tanker, comprising a cover body (1), characterized in that: The cover body (1) is provided with fixing parts for pressing the cover body (1) onto the cargo oil storage well (18) around the periphery thereof; a pressure gauge (6) and an air delivery pipe (7) are fixedly provided on the top of the cover body (1); a slide groove (9) and a vent groove (10) are provided on the inner wall of the air delivery pipe (7) along its length direction; the top of the slide groove (9) is higher than the top of the vent groove (10); a stopper (11) is slidably provided in the air delivery pipe (7); a slider (12) is fixedly provided on the outer periphery of the stopper (11); the slider (12) is adapted to the slide groove (9) and is in contact with the slide groove (9) ) are slidably connected, a connecting rod (13) is fixedly provided on the top of the stopper (11), a piston plate (14) is fixedly provided on the top of the connecting rod (13), the piston plate (14) is slidably connected to the air pipe (7), a spring (17) is fixedly provided between the piston plate (14) and the top of the air pipe (7), and a magnetic component for fixing the piston plate (14) is provided on the piston plate (14) and the air pipe (7), an air intake pipe (8) connected thereto is fixedly provided on the air pipe (7), and the air intake pipe (8) is located between the piston plate (14) and the baffle.

2. The structural tightness test tool for the cargo oil storage well of the tanker according to claim 1 is characterized in that: The fixing member comprises a screw rod (4), the screw rod (4) is threadedly connected to the cover body (1), a clamping block (5) is threadedly connected to the screw rod (4), and the clamping block (5) is in a "C" shape. An extension plate (19) is fixedly arranged on the top of the cargo oil accumulation well (18), and the extension plate (19) cooperates with the clamping block (5) to press the cover body (1).

3. The structural tightness test tool for the cargo oil storage well of the tanker according to claim 2 is characterized in that: An adapter ring (2) is fixedly provided at the bottom of the cover body (1), and the adapter ring (2) cooperates with the extension plate (19) to position the cover body (1).

4. The structural tightness test tool for the cargo oil storage well of the tanker according to claim 3 is characterized in that: The adapter ring (2) is fixedly provided with a seal (3) along its outer circumference, and the seal (3) is in sealing cooperation with the top of the extension plate (19).

5. The structural tightness test tool for the cargo oil storage well of the tanker according to claim 4 is characterized in that: The seal (3) is a sealing ring made of rubber material.

6. The structural tightness test tool for the cargo oil storage well of a tanker according to claim 1 is characterized in that: The magnetic assembly comprises a magnetic block (15) and an electromagnet (16); the magnetic block (15) is fixedly arranged on the top of the piston plate (14); the electromagnet (16) is fixedly arranged on the top of the gas pipe (7); the electromagnet (16) and the magnetic block (15) cooperate magnetically to fix the piston plate (14).

7. The structural tightness test tool for the cargo oil storage well of the tanker according to claim 1 is characterized in that: A plurality of the slide grooves (9) and ventilation grooves (10) are provided, and the plurality of slide grooves (9) and ventilation grooves (10) are arranged in an array along the circumference of the inner wall of the gas transmission pipe (7), and the plurality of slide grooves (9) and ventilation grooves (10) are arranged in an interlaced manner.

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