Corrosion test device for simulating various corrosion areas and strength marine environment

Abstract

The invention belongs to the technical field of corrosion test devices, and discloses a corrosion test device for simulating various corrosion areas and strength marine environments, which comprises a first test cylinder fixed on a bottom plate, a second test cylinder fixed on the first test cylinder, a limiting column fixed at the bottom of the first test cylinder, and a screw rod rotating in the limiting column; connecting plates are fixed to the upper end and the lower end of the sliding sleeve, a sliding rod is fixed between the connecting plates, limiting plates are connected to the sliding sleeve in a sliding mode, the limiting plates are connected with the sliding rod in a sliding mode, a connecting cylinder is connected to the sliding rod between the limiting plates in a sliding mode, and the lower end of the connecting cylinder is rotationally connected with the limiting plates; the upper end is detachably connected with the limiting plate; a limiting sleeve is fixed to the bottom of the first test cylinder, a push-pull rod slides in the limiting sleeve, and a poke rod is slidably connected to the top end of the push-pull rod and rotationally connected with the side face of the limiting sleeve. The corrosion test of an atmosphere area, a splash area, a tidal range area, a total immersion area and a sea mud area can be realized.

Description

Technical Field

[0001] The invention belongs to the technical field of corrosion test devices, and in particular relates to a corrosion test device for simulating various corrosion areas and a strong marine environment. Background Art

[0002] The natural environment exposure test is the most reliable method for evaluating the corrosion of materials in marine environments, and the results can more truly reflect the corrosion conditions in the actual service environment. However, the natural environment exposure test has a long cycle, slow speed, and consumes a lot of manpower and material resources. It is not only difficult to quickly evaluate the long design life in a short period of time, but the results are limited to the prediction of the corrosion rate of the test materials in the exposure area. With the proposal of "material genetic engineering", new requirements have been put forward for the speed of material research and development. More and more attention has been focused on indoor accelerated simulation test methods, hoping to infer the results of long-term outdoor experiments through short-term accelerated corrosion results. At the same time, the indoor simulation test method has the advantages of adjustable parameters and high efficiency. Combined with the data monitoring technology in the corrosion process, it can provide technical support for the reliability evaluation of big data prediction models and the dynamic analysis of corrosion mechanisms in long-term exposure processes.

[0003] Marine corrosion zones can be divided into atmospheric zones, splash zones, tidal range zones, full immersion zones, and sea mud zones. However, most existing devices simulate the impact of marine atmospheric zones on metal corrosion, and there are fewer simulations of the comprehensive corrosion zones of splash zones, tidal range zones, full immersion zones, and sea mud zones. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a corrosion test device that simulates various corrosion areas and an intensity marine environment, which integrates various marine corrosion zones and can realize corrosion tests in the atmospheric zone, splash zone, tidal zone, full immersion zone, and sea mud zone.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A corrosion test device for simulating various corrosion areas and strong marine environment includes a bottom plate, a plurality of fixing columns are fixedly connected to the circumference of the upper end surface of the bottom plate, and a top plate is fixedly connected to the top of the fixing column;

[0007] A first cylindrical test cylinder with a closed bottom and an open top is fixedly connected to the middle upper end surface of the bottom plate, a second cylindrical test cylinder with an open top is fixedly connected to the upper end of the first test cylinder, a through hole is provided at the bottom of the second test cylinder, a limit column with a hollow structure is fixedly connected to the bottom of the first test cylinder, the limit column extends upward through the through hole, a sliding groove is provided along the length direction of the limit column on the side surface, and a screw rod is rotatably connected to the inner side of the limit column;

[0008] The cam is connected with the first and second limit plates, and the cam is connected with the first and second limit plates respectively.

[0009] The bottom of the first test cylinder is fixedly connected with a plurality of limit sleeves along its axial direction, the limit sleeves extend upward through the bottom of the second test cylinder, the top side of the limit sleeves is fixedly connected with a support arm, a push-pull rod is slidably connected in the limit sleeve, the top of the push-pull rod is fixedly connected with a connecting arm, a toggle rod is rotatably connected to the support arm, the lower end of the toggle rod is fixedly connected with a splash plate, an adjustment slot is provided at the upper end of the toggle rod, and the connecting arm is slidably connected to the adjustment slot.

[0010] Furthermore, the upper end surface of the second limiting plate is fixedly connected to a connecting block, the side surface of the connecting block is rotatably connected to a first connecting rod, the upper end of the first connecting rod is rotatably connected to a second connecting rod, the other end of the second connecting rod is fixedly connected to the output end of the first motor, and the first motor is fixedly connected to the second connecting plate.

[0011] Furthermore, the lower ends of several of the push-pull rods are fixedly connected to a fixing ring, the fixing ring is fixedly connected to a fixing rod, the side of the fixing rod is rotatably connected to a third connecting rod, the lower end of the third connecting rod is rotatably connected to an eccentric wheel, the eccentric wheel is fixedly connected to the output end of the second motor, and the second motor is fixedly connected to the bottom of the first test cylinder.

[0012] Furthermore, a third motor is fixedly connected to the bottom of the first test cylinder, and an output end of the third motor is fixedly connected to the lower end of the screw rod.

[0013] Furthermore, a baffle plate having a diameter larger than that of the through hole is slidably connected to the limiting column at the lower end of the through hole, and a compression spring is sleeved on the limiting column at the lower end of the baffle plate.

[0014] Furthermore, the first test cylinder and the second test cylinder are made of transparent material.

[0015] Furthermore, a liquid inlet and a liquid outlet are provided on the side wall of the second test cylinder.

[0016] Furthermore, connecting sleeves are fixedly connected to both sides of the lower end surface of the second limiting plate, the connecting sleeves are slidably connected to the sliding rod, the inner side surface of the upper end of the connecting tube is provided with an internal thread, and the connecting sleeve is threadedly connected to the connecting tube.

[0017] Furthermore, a wind tube is slidably connected to the side wall of the second test cylinder, a fan and an electric heating wire are fixedly connected inside the wind tube, a fourth motor is fixedly connected to the lower end of the wind tube, a first gear is fixedly connected to the output end of the fourth motor, the first gear is meshed with a gear ring, and the gear ring is fixedly connected to the outside of the second test cylinder.

[0018] Furthermore, a fifth motor is fixedly connected to the upper end of the top plate, and the output end of the fifth motor is fixedly connected to a connecting piece through the top plate, the lower end of the connecting piece is fixedly connected to the first arc plate, the lower end of the first arc plate is fixedly connected to the second arc plate, the ends of the first arc plate and the second arc plate are fixedly connected, a slider is slidably connected to the second arc plate, the lower end of the slider is fixedly connected to an irradiation lamp, connecting belts are fixedly connected on both sides of the slider, the other end of the connecting belt passes through the first arc plate and is fixedly connected to the winding roller, one end of the winding roller is rotatably connected to the connecting piece, the other end of the winding roller is fixedly connected to the second gear, a third gear is meshed between the two second gears, the third gear is fixedly connected to the output end of the sixth motor, and the sixth motor is fixedly connected to the connecting piece.

[0019] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0020] Fixed connection refers to a connection in which parts or components are fixed without any relative movement. There are two types of connection: detachable and non-detachable.

[0021] (1) A removable connection is a connection that uses screws, splines, wedge pins, etc. to hold parts together. This type of connection can be disassembled for maintenance without damaging the parts. However, the specifications of the connectors used must be correct (such as the length of the bolts, keys, and wedge pins) and they must be properly tightened.

[0022] (2) Non-detachable connections mainly refer to welding, riveting and tenoning. Since they need to be disassembled by forging, sawing or oxygen cutting for maintenance or replacement, spare parts generally cannot be reused. At the same time, when making connections, attention should be paid to process quality, technical inspection and remedial measures (such as calibration, polishing, etc.).

[0023] A threaded connection refers to a detachable connection in which the connected parts are connected together using threaded parts (or the threaded parts of the connected parts).

[0024] A sliding connection is when two objects are in contact but not fixed and can slide relative to each other.

[0025] A rotational connection is a connection between parts that allows the parts to rotate relative to each other.

[0026] Beneficial effects of the present invention:

[0027] By integrating various marine corrosion zones together, corrosion tests in the atmospheric zone, splash zone, tidal range zone, full immersion zone and sea mud zone can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of the connection structure between the first curved plate and the second curved plate in an embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of the internal structure of a first test cylinder according to an embodiment of the present invention;

[0032] Figure 4 is a schematic diagram of the structure of a toggle lever according to an embodiment of the present invention;

[0033] Figure 5 is a schematic structural diagram of a sliding sleeve according to an embodiment of the present invention;

[0034] Figure 6 It is a schematic diagram of the structure of the air duct according to an embodiment of the present invention;

[0035] Figure 7 is a schematic diagram of the bottom structure of a first test tube according to an embodiment of the present invention;

[0036] Figure 8 is a schematic diagram of the internal structure of a first test cylinder according to an embodiment of the present invention;

[0037] Fig. 9 is a schematic structural diagram of a second test cylinder according to an embodiment of the present invention;

[0038] Fig.10 is a schematic diagram of the structure of a moving block according to an embodiment of the present invention;

[0039] Fig.11 It is a schematic diagram of the limiting column structure of an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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.

[0041] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] like Figure 1-11 As shown, the device for simulating various corrosion areas and strength marine environment corrosion test includes a bottom plate 1, a plurality of fixing columns 2 are fixedly connected to the circumference of the upper end surface of the bottom plate 1, and a top plate 3 is fixedly connected to the top of the fixing column 2;

[0043] A first cylindrical test cylinder 4 with a closed bottom and an open top is fixedly connected to the middle upper end surface of the base plate 1, a second cylindrical test cylinder 5 with an open top is fixedly connected to the upper end of the first test cylinder 4, a through hole 6 is provided at the bottom of the second test cylinder 5, a limiting column 7 with a hollow structure is fixedly connected to the bottom of the first test cylinder 4, the limiting column 7 extends upward through the through hole 6, a sliding groove 8 is provided on the side of the limiting column 7 along its length direction, and a screw rod 9 is rotatably connected to the inner side of the limiting column 7.

[0044] A sliding sleeve 10 is slidably connected to the limiting column 7, a moving block 11 is threadedly connected to the screw rod 9, a side surface of the moving block 11 passes through the slide groove 8 and is fixedly connected to the inner side of the upper end of the sliding sleeve 10, a first connecting plate 12 is fixedly connected to the lower end of the sliding sleeve 10, a second connecting plate 13 is fixedly connected to the upper end of the sliding sleeve 10, a sliding rod 14 is fixedly connected between the first connecting plate 12 and the second connecting plate 13 on both sides, a first limiting plate 15 and a second limiting plate 16 are slidably connected to the sliding sleeve 10, the sides of the first limiting plate 15 and the second limiting plate 16 are slidably connected to the sliding rod 14, a connecting tube 17 is slidably connected to the sliding rod 14 between the first limiting plate 15 and the second limiting plate 16, the lower end of the connecting tube 17 is rotatably connected to the first limiting plate 15, the upper end of the connecting tube 17 is detachably connected to the second limiting plate 16, and a test piece 18 is clamped between the first limiting plate 15 and the second limiting plate 16;

[0045] The bottom of the first test cylinder 4 is fixedly connected with a plurality of limit sleeves 20 along its axial direction. The limit sleeve 20 extends upward through the bottom of the second test cylinder 5. The top side of the limit sleeve 20 is fixedly connected with a support arm 21. A push-pull rod 22 is slidably connected inside the limit sleeve 20. The top of the push-pull rod 22 is fixedly connected with a connecting arm 23. A toggle rod 56 is rotatably connected to the support arm 21. The lower end of the toggle rod 56 is fixedly connected with a splash plate 57. An adjusting groove 24 is provided at the upper end of the toggle rod 56. The connecting arm 23 is slidably connected to the adjusting groove 24.

[0046] When in use, fill the first test tube 4 with sea mud and seawater, fill the second test tube 5 with seawater, place the test piece 18 between the first limit plate 15 and the second limit plate 16, and connect and install with the second limit plate 16 through the connecting tube 17, so that the first limit plate 15 and the second limit plate 16 clamp and fix the test piece 18. When conducting an atmospheric zone test, drive the screw 9 to drive the moving block 11 to move to the top of the limit column 7. At this time, the sliding sleeve 10 is located in the second test tube 5. Pull the second limit plate 16 upward to move the test piece 18 to the top of the sliding sleeve 10. At this time, the test piece 18 is separated from the seawater in the second test tube 5, and the corrosion test in the atmospheric zone is realized. When conducting a splash zone test, drive the push-pull rod 22 to move back and forth, and then drive the toggle rod 56 to swing back and forth. Since the toggle rod 56 is located at the water surface in the second test tube 5, the toggle rod 56 reciprocates to drive the splash plate 57 to splash water continuously, so that the water splashes on the test piece 18, and the corrosion test in the splash zone is realized. When conducting a tidal zone test, the second limit plate 16 is driven to move up and down along the sliding sleeve 10, so that the test piece 18 moves out of the sea surface and immerses in the sea water, and a corrosion test in the tidal zone is achieved. When conducting a full immersion zone test, the second limit plate 16 is driven to move downward along the sliding sleeve 10, so that the test piece 18 is located at the bottom of the sliding sleeve 10, and the test piece 18 is immersed in the sea water, and a corrosion test in the full immersion zone is achieved. When conducting a sea mud zone test, the test piece 18 is located at the bottom of the sliding sleeve 10, and the driving screw 9 is rotated to drive the sliding sleeve 10 to move downward, and enter the first test cylinder 4 through the through hole 6, so that the test piece 18 is submerged in the sea mud, and a corrosion test in the sea mud zone is achieved.

[0047] In one embodiment of the present invention, the upper end surface of the second limit plate 16 is fixedly connected to the connection block 25, the side of the connection block 25 is rotatably connected to the first connection rod 26, the upper end of the first connection rod 26 is rotatably connected to the second connection rod 27, the other end of the second connection rod 27 is fixedly connected to the output end of the first motor 28, and the first motor 28 is fixedly connected to the second connection plate 13. The first motor 28 drives the second connection rod 27 to rotate, and the second connection rod 27 pulls the second connection rod 27, and drives the second limit plate 16 to move up and down along the sliding rod 14 through the connection block 25, so as to realize the up and down movement adjustment of the test piece 14 along the sliding sleeve 10.

[0048] In one embodiment of the present invention, the lower ends of the plurality of push-pull rods 22 are fixedly connected with a fixing ring 29, the fixing ring 29 is fixedly connected with a fixing rod 30, the side of the fixing rod 30 is rotatably connected with a third connecting rod 31, the lower end of the third connecting rod 31 is rotatably connected with an eccentric wheel 32, the eccentric wheel 32 is fixedly connected with the output end of the second motor 33, and the second motor 33 is fixedly connected to the bottom of the first test cylinder 4. The second motor 33 drives the eccentric wheel 32 to rotate, drives the fixing rod 30 to move up and down through the third connecting rod 31, the fixing rod 30 drives the fixing ring 29 to move up and down, and the fixing ring 29 drives the push-pull rod 22 to move up and down, so as to realize the reciprocating swing of the toggle rod 56.

[0049] In one embodiment of the present invention, a third motor 34 is fixedly connected to the bottom of the first test cylinder 4, and the output end of the third motor 34 is fixedly connected to the lower end of the screw rod 9. The third motor 34 drives the screw rod 9 to rotate.

[0050] In one embodiment of the present invention, a baffle 35 having a larger diameter than the through hole 6 is slidably connected to the limiting column 7 at the lower end of the through hole 6, and a compression spring 36 is sleeved on the limiting column 7 at the lower end of the baffle 35. Under the elastic force of the compression spring 36, the baffle 35 blocks the through hole 6 to prevent the sea mud from being stirred and entering the second test tube 5 when the splash zone test is performed. When the sea mud zone test is performed, the sliding sleeve 10 moves down to resist the baffle 35, so that the baffle 35 moves down and the compression spring 36 contracts.

[0051] In one embodiment of the present invention, the first test cylinder 4 and the second test cylinder 5 are made of transparent material so that the internal test conditions can be observed throughout.

[0052] In one embodiment of the present invention, a liquid inlet 37 and a liquid outlet 38 are provided on the side wall of the second test cylinder 5. Seawater is injected into and discharged from the second test cylinder 5.

[0053] In one embodiment of the present invention, the lower end surfaces of the second limit plate 16 are fixedly connected with connecting sleeves 19, the connecting sleeves 19 are slidably connected to the slide bar 14, the upper inner side surface of the connecting tube 17 is provided with internal threads, and the connecting sleeves 19 are threadedly connected to the connecting tube 17. The test piece 18 is installed and removed.

[0054] In one embodiment of the present invention, a wind tube 39 is slidably connected to the side wall of the second test tube 5, a fan 40 and an electric heating wire 41 are fixedly connected inside the wind tube 39, a fourth motor 42 is fixedly connected to the lower end of the wind tube 39, a first gear 43 is fixedly connected to the output end of the fourth motor 42, the first gear 43 is meshed with a gear ring 44, and the gear ring 44 is fixedly connected to the outer side of the second test tube 5. When it is necessary to simulate wind, the fan 40 is driven to generate wind force to blow toward the test piece 18, the electric heating wire 41 is energized to generate hot wind, and hot wind can be simulated, and the fourth motor 42 drives the first gear 43 to rotate, so that the wind tube 39 moves along the side wall of the second test tube 5 to achieve a change in wind direction.

[0055] In one embodiment of the present invention, a fifth motor 45 is fixedly connected to the upper end of the top plate 3, and the output end of the fifth motor 45 is fixedly connected to a connecting member 46 through the top plate 3, and a first arc plate 47 is fixedly connected to the lower end of the connecting member 46, and a second arc plate 48 is fixedly connected to the lower end of the first arc plate 47, and the ends of the first arc plate 47 and the second arc plate 48 are fixedly connected, and a slider 49 is slidably connected to the second arc plate 48, and a lighting lamp 50 is fixedly connected to the lower end of the slider 49, and connecting belts 51 are fixedly connected to both sides of the slider 49, and the other end of the connecting belt 51 passes through the first arc plate 47 and is fixedly connected to a winding roller 52, one end of the winding roller 52 is rotatably connected to the connecting member 46, and the other end of the winding roller 52 is fixedly connected to a second gear 53, and a third gear 54 is meshed between the two second gears 53, and the third gear 54 is fixedly connected to the output end of the sixth motor 55, and the sixth motor 55 is fixedly connected to the connecting member 46. The sixth motor 55 drives the third gear 54 to rotate, and the third gear 54 drives the two second gears 53 to rotate, thereby rotating the two winding rollers 52, one of which rewinds the connecting belt 51 and the other unwinds the connecting belt 51, thereby pulling the adjusting slider 49 to the position of the second curved plate 48, thereby adjusting the irradiation angle of the irradiation lamp 50, which is used to simulate sunlight. By driving the fifth motor 45, the position of the entire first curved plate 47 and the second curved plate 48 is adjusted, and the irradiation position of the irradiation lamp 50 is further adjusted.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A corrosion test device for simulating various corrosion areas and strong marine environment, comprising a bottom plate (1), characterized in that: A plurality of fixing columns (2) are fixedly connected to the circumference of the upper end surface of the bottom plate (1), and a top plate (3) is fixedly connected to the top end of the fixing column (2); A first cylindrical test cylinder (4) with a closed bottom and an open top is fixedly connected to the middle upper end surface of the bottom plate (1); a second cylindrical test cylinder (5) with an open top is fixedly connected to the upper end of the first test cylinder (4); a through hole (6) is provided at the bottom of the second test cylinder (5); a limiting column (7) with a hollow structure is fixedly connected to the bottom of the first test cylinder (4); the limiting column (7) extends upward through the through hole (6); a sliding groove (8) is provided on the side of the limiting column (7) along its length direction; a screw rod (9) is rotatably connected to the inner side of the limiting column (7); The limiting column (7) is slidably connected to a sliding sleeve (10), the screw rod (9) is threadedly connected to a moving block (11), the side of the moving block (11) passes through the sliding groove (8) and is fixedly connected to the inner side of the upper end of the sliding sleeve (10), the lower end of the sliding sleeve (10) is fixedly connected to a first connecting plate (12), the upper end of the sliding sleeve (10) is fixedly connected to a second connecting plate (13), a sliding rod (14) is fixedly connected between the two sides of the first connecting plate (12) and the second connecting plate (13), and the sliding sleeve (10) is slidably connected to the inner side of the upper end of the sliding sleeve (10). A first limiting plate (15) and a second limiting plate (16) are provided, the side edges of the first limiting plate (15) and the second limiting plate (16) are slidably connected to the sliding rod (14), a connecting tube (17) is slidably connected to the sliding rod (14) between the first limiting plate (15) and the second limiting plate (16), the lower end of the connecting tube (17) is rotatably connected to the first limiting plate (15), the upper end of the connecting tube (17) is detachably connected to the second limiting plate (16), and a test piece (18) is clamped between the first limiting plate (15) and the second limiting plate (16); The bottom of the first test cylinder (4) is fixedly connected to a plurality of limiting sleeves (20) along its axial direction. The limiting sleeves (20) extend upwardly through the bottom of the second test cylinder (5). The top side of the limiting sleeve (20) is fixedly connected to a support arm (21). A push-pull rod (22) is slidably connected inside the limiting sleeve (20). The top of the push-pull rod (22) is fixedly connected to a connecting arm (23). A toggle rod (56) is rotatably connected to the support arm (21). The lower end of the toggle rod (56) is fixedly connected to a splash plate (57). An adjusting groove (24) is provided at the upper end of the toggle rod (56). The connecting arm (23) is slidably connected to the adjusting groove (24).

2. The simulated multiple corrosion area and strength marine environment corrosion test device according to claim 1 is characterized in that: The upper end surface of the second limiting plate (16) is fixedly connected to a connecting block (25), the side surface of the connecting block (25) is rotatably connected to a first connecting rod (26), the upper end of the first connecting rod (26) is rotatably connected to a second connecting rod (27), the other end of the second connecting rod (27) is fixedly connected to an output end of a first motor (28), and the first motor (28) is fixedly connected to the second connecting plate (13).

3. The simulated multiple corrosion area and strength marine environment corrosion test device according to claim 2 is characterized in that: The lower ends of the push-pull rods (22) are fixedly connected to a fixing ring (29), the fixing ring (29) is fixedly connected to a fixing rod (30), the side of the fixing rod (30) is rotatably connected to a third connecting rod (31), the lower end of the third connecting rod (31) is rotatably connected to an eccentric wheel (32), the eccentric wheel (32) is fixedly connected to the output end of a second motor (33), and the second motor (33) is fixedly connected to the bottom of the first test cylinder (4).

4. The simulated multiple corrosion area and strength marine environment corrosion test device according to claim 3 is characterized in that: A third motor (34) is also fixedly connected to the bottom of the first test cylinder (4), and an output end of the third motor (34) is fixedly connected to the lower end of the screw rod (9).

5. The simulated multiple corrosion area and strength marine environment corrosion test device according to claim 4 is characterized in that: A baffle (35) having a diameter greater than that of the through hole (6) is slidably connected to the limiting column (7) at the lower end of the through hole (6), and a compression spring (36) is sleeved on the limiting column (7) at the lower end of the baffle (35).

6. The simulated multiple corrosion area and strength marine environment corrosion test device according to claim 5, characterized in that: The first test cylinder (4) and the second test cylinder (5) are made of transparent material.

7. The simulated multiple corrosion area and strength marine environment corrosion test device according to claim 6 is characterized in that: A liquid inlet (37) and a liquid outlet (38) are provided on the side wall of the second test cylinder (5).

8. The simulated multiple corrosion area and strength marine environment corrosion test device according to claim 7 is characterized in that: The lower end surface of the second limit plate (16) is fixedly connected with a connecting sleeve (19) on both sides. The connecting sleeve (19) is slidably connected to the slide rod (14). The upper inner side surface of the connecting tube (17) is provided with an internal thread. The connecting sleeve (19) is threadedly connected to the connecting tube (17).

9. The simulated multiple corrosion area and strength marine environment corrosion test device according to claim 1, characterized in that: A wind tube (39) is slidably connected to the side wall of the second test tube (5), a fan (40) and an electric heating wire (41) are fixedly connected inside the wind tube (39), a fourth motor (42) is fixedly connected to the lower end of the wind tube (39), an output end of the fourth motor (42) is fixedly connected to a first gear (43), the first gear (43) is meshed with a gear ring (44), and the gear ring (44) is fixedly connected to the outer side of the second test tube (5).

10. The simulated multiple corrosion area and strength marine environment corrosion test device according to claim 1, characterized in that: The upper end of the top plate (3) is fixedly connected to a fifth motor (45); the output end of the fifth motor (45) passes through the top plate (3) and is fixedly connected to a connecting piece (46); the lower end of the connecting piece (46) is fixedly connected to a first curved plate (47); the lower end of the first curved plate (47) is fixedly connected to a second curved plate (48); the first curved plate (47) and the end of the second curved plate (48) are fixedly connected; a slider (49) is slidably connected to the second curved plate (48); the lower end of the slider (49) is fixedly connected to an irradiation lamp ( 50), connecting belts (51) are fixedly connected to both sides of the slider (49), the other end of the connecting belt (51) passes through the first arc plate (47) and is fixedly connected to the winding roller (52), one end of the winding roller (52) is rotatably connected to the connecting member (46), the other end of the winding roller (52) is fixedly connected to a second gear (53), a third gear (54) is meshed between the two second gears (53), the third gear (54) is fixedly connected to the output end of the sixth motor (55), and the sixth motor (55) is fixedly connected to the connecting member (46).

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