Experimental device for anticorrosive coating in oil pipe

Abstract

The utility model discloses an oil pipe internal anticorrosive coating experiment device, which comprises a flow guide frame and an oil supply device, one end of the flow guide frame is provided with an oil inlet, the oil inlet is connected with the oil supply device, the other end of the flow guide frame is provided with an oil outlet, the bottom of the flow guide frame is provided with a lower opening at the part between the oil inlet and the oil outlet, and the lower opening is connected with the oil supply device. The height of the lower opening in the vertical direction is lower than the heights of the oil inlet and the oil port in the vertical direction; and the lower opening can be hermetically connected with a test plate coated with an anticorrosive coating. Crude oil for simulation can be provided for the flow guide frame through the oil supply device, the crude oil can flow in from the oil inlet of the flow guide frame and flow out from the oil outlet of the flow guide frame, and then the flow field of the crude oil flowing in the oil conveying pipeline can be simulated; when a simulation experiment is carried out, the test plate is connected to the lower opening of the flow guide frame, and when crude oil flows in from the oil inlet of the flow guide frame and flows out from the oil outlet of the flow guide frame, the anti-corrosion pattern layer on the test plate can be in contact with the crude oil flowing in the flow guide frame so as to test the performance of the crude oil.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pipe anti-corrosion coating experiments, in particular to an oil pipe internal anti-corrosion coating experiment device. Background Art

[0002] Oil pipelines are also called oil pipelines. Oil pipelines are composed of oil pipes and their accessories. According to the needs of the process, they are equipped with corresponding oil pump units and designed and installed into a complete pipeline system to complete the tasks of oil loading and unloading and transfer. Because oil has a certain corrosiveness, the inner wall of the oil pipeline often needs to be coated with an anti-corrosion coating to achieve an anti-corrosion effect and to extend the service life of the oil pipeline. The corrosion resistance of the anti-corrosion coating is to protect the oil pipeline.

[0003] In order to test the corrosion resistance of the anti-corrosion coating, an experimental device is needed to test the anti-corrosion coating to ensure the corrosion resistance and wear resistance of the anti-corrosion coating. For this purpose, an oil pipe internal anti-corrosion coating experimental device is urgently needed to achieve the effect of testing the anti-corrosion coating. Summary of the invention

[0004] In view of the deficiencies of the prior art, the purpose of the present invention is to provide an oil pipe internal anti-corrosion coating experimental device to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for testing an anti-corrosion coating inside an oil pipe comprises a guide frame and an oil supply device, wherein an oil inlet is provided at one end of the guide frame and the oil inlet is connected to the oil supply device, an oil outlet is provided at the other end of the guide frame, a lower opening is provided at the bottom of the guide frame between the oil inlet and the oil outlet, a height of the lower opening in the vertical direction is lower than a height of the oil inlet and the oil outlet in the vertical direction; the lower opening can be sealed and connected to a test plate coated with an anti-corrosion coating.

[0007] Preferably, the bottom of the guide frame is configured as a sunken rectangular frustum, with the small end of the rectangular frustum facing downward and serving as the lower opening.

[0008] Preferably, a sealing ring is provided on the lower opening, and the sealing ring is used for sealing between the lower opening and the surface of the test plate coated with the anti-corrosion coating.

[0009] Preferably, the oil supply device includes an oil storage box and an oil pump, the inlet of the oil pump is connected to the oil storage box through an input pipe, the outlet of the oil pump is connected to the oil inlet of the guide frame through an output pipe, and the oil outlet of the guide frame is connected to the oil storage box.

[0010] Preferably, the oil storage box is arranged below the guide frame.

[0011] Preferably, an oil receiving port is provided at the upper end of the oil storage box, and the oil outlet of the guide frame is opposite to the oil receiving port, so that the oil in the guide frame can flow into the oil storage box through the oil outlet and the oil receiving port.

[0012] Preferably, a filter plate is provided on the oil receiving port at a position opposite to the oil outlet.

[0013] Preferably, the oil storage box is provided with an annular frame for mounting a filter plate, the filter plate is horizontally inserted into the annular frame and slidably connected with the annular frame, and a handle is provided on the filter plate for pushing the filter plate into the annular frame or pulling it out of the annular frame.

[0014] Preferably, the utility model oil pipe internal anti-corrosion coating experimental device also includes a liftable experimental table, the experimental table includes a desktop and liftable table legs, the desktop is connected to the table legs, the desktop is arranged below the guide frame and above the oil storage box, the guide frame and the oil storage box are connected by a fixed bracket, an oil groove is opened on the desktop along the length direction of the oil receiving port, the width of the oil groove is greater than the width of the test plate and smaller than the width of the oil receiving port, the length of the oil groove is greater than the length of the test plate and smaller than the length of the oil receiving port, and the desktop can drive the test plate to move up and down.

[0015] Preferably, an upper opening is formed on the top of the guide frame above the lower opening, and an ultraviolet lamp is provided above the upper opening.

[0016] The utility model has the following beneficial effects:

[0017] In the utility model of the oil pipe internal anti-corrosion coating experimental device, the oil supply device can be used to provide the guide frame with crude oil for simulation, one end of the guide frame is provided with an oil inlet, the oil inlet is connected to the oil supply device, the other end of the guide frame is provided with an oil outlet, and at the same time, the bottom of the guide frame is provided with a lower opening in the part between the oil inlet and the oil outlet, and the height of the lower opening in the vertical direction is lower than the height of the oil inlet and the oil outlet in the vertical direction, so that after the oil supply device provides crude oil for the guide frame, the crude oil can flow into the guide frame from the oil inlet and flow out from the oil outlet, so that the crude oil can simulate the flow field of the crude oil flowing in the oil pipeline when flowing through the lower opening; when conducting the simulation experiment, the test plate coated with the anti-corrosion coating can be connected to the lower opening of the guide frame, when the crude oil flows into the guide frame from the oil inlet and flows out from the oil outlet, the anti-corrosion layer on the test plate can contact with the crude oil flowing in the guide frame, and the anti-corrosion and wear-resistant performance of the anti-corrosion layer can be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a first stereoscopic schematic diagram of the oil pipe internal anti-corrosion coating experimental device of the utility model;

[0019] Figure 2 It is a second stereoscopic schematic diagram of the oil pipe internal anti-corrosion coating experimental device of the utility model;

[0020] Figure 3 This is a front view longitudinal section schematic diagram of the oil pipe internal anti-corrosion coating experimental device of the utility model;

[0021] Figure 4 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0022] In the figure: 1. laboratory table; 2. electric telescopic rod; 3. oil storage box; 4. fixed bracket; 5. guide frame; 6. ultraviolet lamp; 7. fixed plate; 8. oil pump; 9. output pipe; 10. input pipe; 11. sealing ring; 12. ring frame; 13. filter plate; 14. handle; 15. oil tank; 16. oil outlet; 17. lower opening. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 3 The utility model provides an experimental device for the internal anti-corrosion coating of an oil pipe, comprising a guide frame 5 and an oil supply device, wherein an oil inlet is provided at one end of the guide frame 5, and the oil inlet is connected to the oil supply device, and an oil outlet 16 is provided at the other end of the guide frame 5, and a lower opening 17 is provided at the bottom of the guide frame 5 between the oil inlet and the oil outlet 16, and the height of the lower opening 17 in the vertical direction is lower than the height of the oil inlet and the oil outlet 16 in the vertical direction; the lower opening 17 can be sealed and connected to a test plate coated with an anti-corrosion coating.

[0025] When the experimental device of the utility model is used, the test plate coated with the anti-corrosion coating is sealed and connected with the lower opening 17, and then crude oil is provided from the oil inlet of the guide frame 5 to the guide frame 5 through the oil supply device, and the crude oil flows in from the oil inlet of the guide frame 5 and flows out from the oil outlet; during the flow of crude oil from the oil inlet to the outlet, the crude oil washes and corrodes the anti-corrosion coating coated on the surface of the test plate. Since the height of the lower opening 17 in the vertical direction is lower than the height of the oil inlet and the oil port 16 in the vertical direction, the crude oil above the test plate has a certain height, and the height is preferably the same as the radius of the oil pipe to be simulated, so that it can be closer to the flow of crude oil in the real oil pipe. In addition, the length of the lower opening 17 is as long as possible to avoid the height difference between the two ends of the lower opening 17 and the oil inlet and the oil outlet, which causes the flow field to be turbulent, thereby affecting the simulation of the flow field of crude oil in the pipeline by the utility model, and the length of the lower opening 17 can be determined by experiments according to actual conditions, and the utility model does not make specific restrictions.

[0026] As a feasible solution of the above solution, the bottom of the guide frame 5 can be set as a sunken rectangular cone, the small end of the rectangular cone is downward and serves as the lower opening 17, and the large end of the rectangular cone is lower than the height of the oil inlet and the oil outlet. It is best to make an arc transition at the side corner of the rectangular cone to avoid the corner from having a significant impact on the crude oil flow field.

[0027] As a preferred implementation scheme of the above scheme, a sealing ring 11 is provided on the lower opening 17, and the sealing ring 11 is used to seal between the lower opening 17 and the surface of the test plate coated with an anti-corrosion coating. The sealing ring 11 can ensure the sealing between the lower opening 17 and the surface of the test plate.

[0028] As a feasible solution of the above scheme, the oil supply device includes an oil storage box 3 and an oil pump 8, the inlet of the oil pump 8 is connected to the oil storage box 3 through an input pipe 10, the outlet of the oil pump 8 is connected to the oil inlet of the guide frame 5 through an output pipe 9, and the oil outlet 16 of the guide frame 5 is connected to the oil storage box 3. The oil pump 8 can provide the crude oil stored in the oil storage box 3 to the guide frame 5 for the simulation experiment.

[0029] As a preferred implementation scheme of the above scheme, the oil storage box 3 is arranged below the guide frame 5, so that the crude oil from the oil outlet of the guide frame 5 can flow back to the oil storage box 3 by gravity.

[0030] As a feasible solution of the above scheme, an oil receiving port is opened at the upper end of the oil storage box 3, and the oil outlet 16 of the guide frame 5 is opposite to the oil receiving port. The oil in the guide frame 5 can flow into the oil storage box 3 through the oil outlet 16 and the oil receiving port.

[0031] As a further improvement of the above solution, a filter plate 13 is provided on the oil receiving port at a position opposite to the oil outlet 16 , and the filter plate 13 can be used to filter the crude oil flowing out of the guide frame 5 .

[0032] As a feasible solution of the above scheme, Figure 4 As shown, the oil storage box 3 is provided with an annular frame 12 for mounting a filter plate 13, the filter plate 13 is horizontally inserted into the annular frame 12 and is slidably connected with the annular frame 12, and a handle 14 is provided on the filter plate 13, and the handle 14 is used to push the filter plate 13 into the annular frame 12 or to pull it out of the annular frame 12. In the above scheme, the filter plate 13 is a detachable and replaceable type, which is conducive to ensuring the oil quality.

[0033] As a feasible solution of the above scheme, the utility model oil pipe internal anti-corrosion coating experimental device also includes a liftable experimental table 1, the experimental table 1 includes a desktop and liftable table legs, the table legs can adopt electric telescopic rods 2, the desktop is connected to the table legs, the desktop is arranged below the guide frame 5 and above the oil storage box 3, the guide frame 5 and the oil storage box 3 are connected by a fixed bracket 4, an oil groove 15 is opened on the desktop along the length direction of the oil receiving port, the width of the oil groove 15 is greater than the width of the test plate and smaller than the width of the oil receiving port, the length of the oil groove 15 is greater than the length of the test plate and smaller than the length of the oil receiving port, and the desktop can drive the test plate to move up and down. When the above structure is working, the detection plate is placed in the oil tank 15 and faces the lower opening 17. Then, the table top is controlled to rise by the table legs until the detection plate is in close contact with the lower opening 17, so that the lower opening 17 and the detection plate are sealed and connected. After the experiment is over, the table top is controlled to slowly descend by the table legs. At this time, the oil output of the lower opening 17 should be observed in time to prevent the oil from being sprayed out due to excessive output. After the detection plate is separated from the lower opening 17 by a certain distance, the crude oil in the guide frame flows into the oil tank 15 through the lower opening 17 and is guided by the oil tank 15 and then flows back to the oil storage box 3 through the oil receiving port.

[0034] As a preferred implementation scheme of the above scheme, an upper opening is provided on the top of the guide frame 5 above the lower opening 17, and an ultraviolet lamp 6 is provided above the upper opening. The ultraviolet lamp 6 can be turned on before refueling the guide frame 5, during normal refueling or after unloading the oil, so as to study the corrosion resistance of the anti-corrosion coating when ultraviolet rays act on the test plate alone and together with the original ultraviolet rays on the test plate, so as to provide more experimental scenarios for the performance research of the anti-corrosion coating.

[0035] Embodiment 1:

[0036] See also Figure 1-Figure 4 The present embodiment of the oil pipe internal anti-corrosion coating experimental device comprises an experimental table 1, the experimental table 1 comprises a desktop, an oil tank 15 is provided on the desktop, four electric telescopic rods 2 are fixedly installed on the bottom outer wall of the desktop, an oil storage box 3 is fixedly installed on the lower ends of the four electric telescopic rods 2, a fixed bracket 4 is fixedly installed on the outer wall of the oil storage box 3, the lower end of the fixed bracket 4 is fixedly connected to the oil storage box 3, the upper end of the fixed bracket 4 is fixedly connected to the guide frame 5, an ultraviolet lamp 6 is fixedly installed on the top outer wall of the guide frame 5, an opening is provided on the top of the guide frame 5 for irradiating the surface of the test plate with ultraviolet light, a fixed plate 7 is fixedly installed on the outer wall of the oil storage box 3, an oil pump 8 is fixedly installed on the fixed plate 7, an output pipe 9 is fixedly installed on the output end of the oil pump 8, an input pipe 10 is fixedly installed on the input end of the oil pump 8, and a sealing ring 11 is fixedly installed at the edge of the lower opening 17 at the bottom of the guide frame 5;

[0037] Specifically, the anti-corrosion coating is applied on the test plate, and then the test plate is placed on the desktop of the experimental table 1, and then the electric telescopic rod 2 is turned on, and the electric telescopic rod 2 drives the desktop to move up and down to achieve the sealing contact or disengagement between the test plate and the lower opening 17. When the sealing ring 11 is attached to the test plate, the test plate and the guide frame 5 are sealed, and then the oil pump 8 is turned on, and the oil pump 8 pumps oil into the guide frame 5. The oil will flow along the guide frame 5 to achieve the effect of simulating the oil pipeline to transport oil, and then to achieve the effect of simulating the test of the corrosion coating, to achieve the effect of facilitating the simulation test of the corrosion coating, and to achieve a more accurate test effect;

[0038] When the corrosion coating needs to be tested by ultraviolet radiation, the ultraviolet lamp 6 is turned on to achieve the effect of irradiating the test plate, to achieve the effect of testing the corrosion coating, and to achieve the effect of testing the anti-corrosion coating's resistance to ultraviolet radiation;

[0039] The sealing ring 11 is connected to the guide frame 5, and can seal the middle position of the test plate to prevent the oil from directly contacting the side of the test plate. If the oil directly contacts the side of the side view plate, it may affect the side view result of the final corrosion coating. Because the sealing ring 11 is sealed and attached to the upper surface of the test plate, the effect of completely simulating the oil pipeline can be achieved;

[0040] In the embodiment: the interior of the output pipe 9 is fixedly mounted to the interior of the guide frame 5, and the two input pipes 10 extend into the interior of the oil storage box 3;

[0041] Specifically, the lower opening 17 sunken inside the guide frame 5 can achieve the effect of changing the flow direction of the oil;

[0042] Working principle: apply the anti-corrosion coating on the test plate, place the test plate on the experimental table 1, and locate it in the oil tank 15 of the table top, turn on the electric telescopic rod 2 to drive the table top to move up, so that the sealing ring 11 fits on the upper surface of the test plate, turn on the oil pump 8 to pump the oil into the guide frame 5, and the oil will flow along the inside of the guide frame 5 to achieve the effect of simulating the oil pipeline to transport the oil, to achieve the effect of simulating the test of the corrosion coating. Compared with the related art, the oil pipe internal anti-corrosion coating experimental device provided by the utility model has the following beneficial effects: to achieve the effect of facilitating the simulation test of the corrosion coating.

[0043] Embodiment 2:

[0044] See also Figure 1-Figure 4 An annular frame 12 is fixedly mounted on the outer wall of the oil storage box 3, a filter plate 13 is slidably connected to the inner part of the annular frame 12, and two handles 14 are fixedly mounted on the outer wall of the filter plate 13;

[0045] Specifically, when the filter plate 13 needs to be cleaned or replaced, the handle 14 is moved, and the handle 14 drives the filter plate 13 to move outward, and the filter plate 13 will move along the annular frame 12 to achieve the effect of moving the filter plate 13 out, so as to achieve the effect of conveniently cleaning the filter plate 13;

[0046] In the embodiment: the filter plate 13 is arranged below the output end (i.e., the oil outlet) of the guide frame 5, and a limit plate is fixedly installed on the outer wall of the filter plate 13, and the outer wall of the limit plate is movably fitted with the outer wall of the annular frame 12;

[0047] Specifically, the filter plate 13 is arranged below the oil outlet of the guide frame 5 to achieve the effect of receiving the oil, and can filter the oil flowing out of the guide frame 5 to achieve the effect of filtering impurities. The setting of the limit plate is to limit the filter plate 13 to limit the filter plate 13 to limit the filter plate 13 to limit the filter plate 13 to move toward the side of the oil pump 8; the limit plate is made detachable;

[0048] Working principle: When the filter plate 13 needs to be cleaned or replaced, move the handle 14, and the handle 14 drives the filter plate 13 to move outward, and the filter plate 13 will move along the annular frame 12 to achieve the effect of removing the filter plate 13. Compared with the related art, the oil pipe internal anti-corrosion coating experimental device provided by the utility model has the following beneficial effects: to achieve the effect of facilitating the cleaning of the filter plate 13.

[0049] 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. An oil pipe internal anti-corrosion coating experimental device, characterized in that: The invention comprises a guide frame (5) and an oil supply device, wherein one end of the guide frame (5) is provided with an oil inlet, the oil inlet is connected to the oil supply device, the other end of the guide frame (5) is provided with an oil outlet (16), and the bottom of the guide frame (5) between the oil inlet and the oil outlet (16) is provided with a lower opening (17), the height of the lower opening (17) in the vertical direction is lower than the height of the oil inlet and the oil outlet (16) in the vertical direction; the lower opening (17) can be sealed and connected to a test plate coated with an anti-corrosion coating.

2. The oil pipe internal anti-corrosion coating experimental device according to claim 1, characterized in that: The bottom of the guide frame (5) is configured as a sunken rectangular frustum, with the small end of the rectangular frustum facing downward and serving as the lower opening (17).

3. The oil pipe internal anti-corrosion coating experimental device according to claim 1, characterized in that: A sealing ring (11) is provided on the lower opening (17), and the sealing ring (11) is used for sealing between the lower opening (17) and the surface of the test plate coated with the anti-corrosion coating.

4. The oil pipe internal anti-corrosion coating experimental device according to any one of claims 1 to 3, characterized in that: The oil supply device comprises an oil storage box (3) and an oil pump (8); the inlet of the oil pump (8) is connected to the oil storage box (3) via an inlet pipe, the outlet of the oil pump (8) is connected to the oil inlet of the guide frame (5) via an outlet pipe (9), and the oil outlet (16) of the guide frame (5) is in communication with the oil storage box (3).

5. The oil pipe internal anti-corrosion coating experimental device according to claim 4, characterized in that: The oil storage box (3) is arranged below the flow guide frame (5).

6. The oil pipe internal anti-corrosion coating experimental device according to claim 5, characterized in that: An oil receiving port is provided at the upper end of the oil storage box (3), and an oil outlet (16) of the guide frame (5) is opposite to the oil receiving port. The oil in the guide frame (5) can flow into the oil storage box (3) through the oil outlet (16) and the oil receiving port.

7. The oil pipe internal anti-corrosion coating experimental device according to claim 6, characterized in that: A filter plate (13) is provided at a position on the oil receiving port opposite to the oil outlet (16).

8. The oil pipe internal anti-corrosion coating test device according to claim 7, characterized in that: The oil storage box (3) is provided with an annular frame (12) for mounting a filter plate (13), the filter plate (13) is horizontally inserted into the annular frame (12) and is slidably connected to the annular frame (12), and the filter plate (13) is provided with a handle (14), and the handle (14) is used to push the filter plate (13) into the annular frame (12) or to pull it out of the annular frame (12).

9. The oil pipe internal anti-corrosion coating experimental device according to claim 6, characterized in that: The invention also comprises a liftable laboratory table (1), wherein the laboratory table (1) comprises a tabletop and liftable table legs, wherein the tabletop is connected to the table legs, the tabletop is arranged below the flow guide frame (5) and above the oil storage box (3), the flow guide frame (5) and the oil storage box (3) are connected via a fixed bracket (4), an oil groove (15) is provided on the tabletop along the length direction of the oil receiving port, the width of the oil groove (15) is greater than the width of the test plate and less than the width of the oil receiving port, the length of the oil groove (15) is greater than the length of the test plate and less than the length of the oil receiving port, and the tabletop can drive the test plate to move up and down.

10. The oil pipe internal anti-corrosion coating experimental device according to claim 1, characterized in that: An upper opening is formed on the top of the guide frame (5) above the lower opening (17), and an ultraviolet lamp (6) is provided above the upper opening.

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