CN118243596A - Test device for simulating deep-shallow sea alternating environment corrosion - Google Patents

Abstract

The invention relates to the technical field of corrosion tests, in particular to a test device for simulating deep and shallow sea alternating environment corrosion, which comprises a controller, wherein the controller is used for controlling the corrosion test device to simulate the deep and shallow sea alternating environment corrosion; the device comprises a test box, an environment adjusting mechanism, a solution supplying mechanism and a controller, wherein the controller is connected with the environment adjusting mechanism, the solution supplying mechanism and the test box and is used for controlling the environment adjusting mechanism, the solution supplying mechanism and the test box; the shape of the test box is cylindrical, a cavity is arranged in the test box, the upper part and the lower part of the cavity are respectively provided with a shallow sea environment cavity and a deep sea environment cavity, the middle part of the test cavity is provided with an environment switching mechanism, and the environment switching mechanism vertically separates the cavity of the test box into the shallow sea environment cavity and the deep sea environment cavity.

Description

Test device for simulating deep-shallow sea alternating environment corrosion

Technical Field

The invention relates to the technical field of corrosion tests, in particular to a test device for simulating deep and shallow sea alternating environment corrosion.

Background

Corrosion of materials in marine environments is one of the important problems facing the field of marine engineering. Since the deep and shallow sea environments have significantly different physicochemical properties, the corrosion rates of materials in the deep and shallow sea are different, whereas in alternating deep and shallow sea environments the corrosion effects to which the materials are subjected are more complex. Materials used in alternating deep and shallow sea environments are exposed to greater risk of corrosion damage due to the impact of frequent environmental factors such as alternating sea water pressure, temperature, dissolved oxygen, salinity, etc. With the continuous improvement of the requirements of the fields of ocean engineering, ship manufacturing, ocean resource development and the like on the durability of the material in the deep sea, a large number of corrosion tests need to be carried out on the material applied to the ocean in order to ensure the reliability of the ocean material in the use process, so as to truly reflect the corrosion resistance of the material under the condition of the deep-sea service working condition and evaluate the service life of the material. At present, the corrosion test device for simulating the deep sea static environment is mature. But the test device capable of simulating the alternating environment of deep and shallow sea still belongs to the blank. At present, the simulation of the alternating environment of deep sea and shallow sea is mostly realized by relying on the existing simulation test device for the static environment of deep sea and manually and regularly adjusting comprehensive environmental parameters such as environmental pressure, temperature, dissolved oxygen and the like. The method has the defects of time and labor waste and low environment switching efficiency, and can not accurately evaluate the corrosion resistance of the material in the alternating environment of deep sea and shallow sea. Therefore, the design of the test device capable of simulating deep and shallow sea alternating environment corrosion has important significance.

Disclosure of Invention

In order to solve the technical problems, the invention provides the simulated deep and shallow sea alternating environment corrosion test device which can automatically and rapidly switch samples in the deep and shallow sea environment, and can more truly reflect the corrosion condition of the samples in the deep and shallow sea alternating environment, and has the advantages of convenient use, high reliability and high practicability.

The invention relates to a simulated deep and shallow sea alternating environment corrosion test device, which comprises a controller, an environment adjusting mechanism, a solution supply mechanism and a test box, wherein the controller is used for controlling the environment adjusting mechanism, the solution supply mechanism and the test box; the test box is cylindrical in shape, a cavity is arranged in the test box, a shallow sea environment cavity and a deep sea environment cavity are respectively arranged at the upper part and the lower part of the cavity, an environment switching mechanism is arranged in the middle of the test cavity, the cavity of the test box is divided into the shallow sea environment cavity and the deep sea environment cavity by the environment switching mechanism, a plurality of groups of clamping mechanisms are arranged on the environment switching mechanism, the clamping mechanisms have the clamping and fixing functions, and the environment switching mechanism is used for moving the clamping mechanisms; when a simulation test is carried out on a sample, a plurality of samples are clamped and fixed through a plurality of clamping mechanisms on an environment switching mechanism, then a test box is closed, the test box is sealed, then a controller is used for controlling a solution supply mechanism to respectively convey corresponding solutions into a shallow sea environment cavity and a deep sea environment cavity, and simultaneously an environment adjusting mechanism is used for respectively adjusting the environments in the shallow sea environment cavity and the deep sea environment cavity, so that the plurality of samples on the clamping mechanisms are corroded under the action of the solutions in the shallow sea environment cavity and the deep sea environment cavity respectively; compared with the prior art, the automatic test device has the advantages that the test device avoids the test environment of manually adjusting the test sample, can simulate the impact action of the deep and shallow sea alternating environment on the test sample more truly, and can reflect the corrosion condition of the test sample in the deep and shallow sea alternating environment more truly.

Preferably, the environment switching mechanism comprises a slip ring, a sliding rail, a partition, two groups of motors and a sealing mechanism, wherein the upper part of the test box is provided with an opening, the upper part of the test box is provided with a box cover, the partition is cylindrical in shape and fixedly installed in the middle of the test box, the sliding rail is fixedly installed in the middle of the partition, the sliding rail is provided with the slip ring, the slip ring is slidably installed on the sliding rail, the slip ring is connected with one group of motors, one group of motors is used for driving the slip ring to rotate around the sliding rail, the other group of motors is connected with the box cover, the other group of motors is used for controlling the opening and closing of the box cover, a plurality of groups of clamping mechanisms are arranged on the slip ring, the left part and the right part of the partition are respectively provided with a through hole which is vertically communicated, the left part and the right part of the sliding rail respectively pass through the two groups of through holes, and the left part and the partition are respectively provided with the sealing mechanism which is used for sealing the through hole; when a corrosion test is carried out on a sample, firstly, a box cover is opened through one group of motors, then a plurality of samples are respectively clamped and fixed through a plurality of groups of clamping mechanisms on a slip ring, then the box cover is closed, then corresponding solutions are respectively conveyed into a shallow sea environment cavity and a deep sea environment cavity, the sample is corroded in the corresponding solutions, when the impact of a deep and shallow sea alternating environment on the sample is simulated, the other group of motors are opened, the slip ring rotates around a sliding rail, the slip ring drives the sample to be switched under the environments of the shallow sea environment cavity and the deep sea environment cavity through the clamping mechanisms, and the impact of the deep and shallow sea environment on the sample is simulated; the corrosion environment of the sample can be rapidly switched, the impact of the deep and shallow sea environment on the sample can be simulated, and the device is convenient to use and high in practicability.

Preferably, the clamping mechanism comprises a circular groove, a sample seat, a screw rod, two groups of bosses, two groups of L-shaped plates, two groups of screw holes and two groups of taper bolts, the slip ring is provided with the circular groove, the lower part of the circular groove is provided with the screw hole, the screw rod is fixedly arranged at the lower end of the sample seat, the screw rod is screwed with the screw hole at the lower part of the circular groove, the diameter of the circular groove is smaller than the thickness of a partition wall, the sample seat is provided with a groove, the two groups of bosses are respectively fixedly arranged at the left part and the right part of the groove, the left part and the right part of the sample seat are respectively provided with the screw holes, the two groups of bosses are respectively provided with rectangular holes, the lower parts of the two groups of L-shaped plates are respectively inserted into the two groups of rectangular holes, the two groups of L-shaped plates are respectively provided with slotted holes, and the two groups of taper bolts respectively penetrate through the slotted holes on the two groups of L-shaped plates; when a sample is fixed on the slip ring, the sample is firstly placed in the groove, the lower end of the sample is contacted with the lower end of the groove, then two groups of L-shaped plates are respectively inserted into the two groups of rectangular holes, the upper parts of the two groups of L-shaped plates respectively press the left part and the right part of the upper end of the sample, then the two groups of cone head bolts are rotated, the two groups of cone head bolts are respectively inserted into the two groups of slots, the two groups of cone head bolts respectively fix the two groups of L-shaped plates, the sample is further fixed in the groove, then the sample holder is placed in the circular groove, then the sample holder is rotated, the screw is driven to rotate by the sample holder, the screw is screwed with the threaded holes at the lower part of the circular groove to be fixed, the sample holder is further fixed on the slip ring, then the sample can be driven to move in the shallow sea environment cavity and the deep sea environment cavity by the rotation of the slip ring, the sample holder is conveniently clamped and fixed, the sample holder is detachably connected with the slip ring, the sample holder is conveniently replaced and the convenience is improved.

Preferably, the device further comprises a plurality of groups of needle-shaped contacts, wherein the lower end of the groove is provided with a plurality of groups of needle-shaped contacts, and the upper part of the L-shaped plate is provided with a needle-shaped contact; through the arrangement, when a sample is placed in the groove, the lower end of the sample is contacted with a plurality of groups of needle-shaped contacts on the groove, when the L-shaped plate is fastened to the sample, the needle-shaped contacts on the L-shaped plate are contacted with the sample, so that the contact area between the sample holder and the sample and the contact area between the L-shaped plate and the sample are reduced, the solution can be contacted with the sample more, the corrosion state of the sample can be reflected more truly, and the reliability is improved.

Preferably, the sealing mechanism comprises four groups of hydraulic sealing rings and a hydraulic press, the four groups of hydraulic sealing rings are respectively arranged at the upper end and the lower end of two groups of cabin penetrating holes, the hydraulic sealing rings are positioned at gaps among the sliding rail, the sliding ring and the cabin penetrating holes, sealing fillers are arranged in the two groups of cabin penetrating holes, the upper part and the lower part of the sealing fillers are respectively provided with the hydraulic sealing rings, pipelines are arranged in the two groups of sealing fillers, the input ends of the pipelines are connected with the hydraulic press, and the hydraulic press is connected with the controller; when a sample is required to be corroded in a static environment, the input end of the hydraulic machine is connected with an external hydraulic machine, hydraulic oil is conveyed into the sealing filler through the hydraulic machine and a pipeline, the sealing filler is expanded, the sealing filler is extruded to the hydraulic sealing ring, and sealing among the sliding rail, the sliding ring and the cabin penetrating hole is realized through the extrusion force of the hydraulic sealing ring; when the sample is required to be switched between the shallow sea environment cavity and the deep sea environment cavity, the hydraulic oil in the sealing filler is pumped out through the hydraulic press, and at the moment, the hydraulic sealing ring realizes the sealing of the sliding ring when the sliding ring rotates around the partition through weaker extrusion force to the sliding ring; the sealing state can be adjusted according to the requirement, so that the convenience is improved.

Preferably, the solution supply mechanism comprises a shallow sea solution storage tank and a deep sea solution storage tank, wherein the shallow sea solution storage tank and the deep sea solution storage tank are respectively provided with a cooler, a temperature sensor, a dissolved oxygen sensor and a nitrogen cylinder, the shallow sea solution storage tank is also internally provided with a heater, the shallow sea solution storage tank and the deep sea solution storage tank are respectively provided with a conveying pump, the conveying pumps are respectively provided with a conveying pipe, the conveying pipes are respectively provided with a valve, the shallow sea solution storage tank and the deep sea environment cavity form a circulation loop through one group of conveying pumps and the conveying pipes on the conveying pumps, the deep sea solution storage tank and the conveying pipes on the conveying pumps form a circulation loop through the other group of conveying pumps, and the conveying pumps, the valves, the coolers, the temperature sensor and the nitrogen cylinders are all connected with the controller; when the solution is conveyed into the shallow sea environment cavity and the deep sea environment cavity, the solution in the shallow sea solution storage tank can enter the shallow sea environment cavity for use through the conveying pump and the conveying pipe by one group of conveying pumps, and the solution in the deep sea solution storage tank can enter the deep sea environment cavity for use through the conveying pipe by the other group of conveying pumps, so that the solution is convenient to convey.

Preferably, the environment adjusting mechanism comprises a temperature adjusting unit, a pressure adjusting unit, an oxygen dissolving adjusting unit and two groups of pressure sensors, wherein the two groups of pressure sensors are respectively arranged in a shallow sea environment cavity and a deep sea environment cavity, the two groups of pressure sensors are connected with the pressure adjusting unit, the pressure adjusting unit is connected with a conveying pump and a valve, the pressure adjusting unit is arranged on a controller, the temperature adjusting unit is arranged on the controller, the temperature adjusting unit is connected with a cooler, a heater and a temperature sensor, the oxygen dissolving adjusting unit is arranged on the controller, the oxygen dissolving adjusting unit is connected with a nitrogen cylinder and an oxygen dissolving sensor, and the output ends of the two groups of nitrogen cylinders are respectively connected with a shallow sea solution storage tank and a deep sea solution storage tank through the two groups of oxygen dissolving adjusting units; when a corrosion test is carried out on a sample, the two groups of pressure sensors respectively transmit the pressure parameters of seawater in the shallow sea environment cavity and the deep sea environment cavity to the controller through the two groups of pressure regulating units, and then the controller enables the pressure regulating units to control the valves on the two groups of conveying pumps and the conveying pipes according to the set pressure parameters, so that the solution pressures of the shallow sea solution storage tank and the deep sea solution storage tank respectively transmitted to the shallow sea environment cavity and the deep sea environment cavity through the two groups of conveying pumps are changed, and the solution pressures in the shallow sea environment cavity and the deep sea environment cavity are regulated to proper pressures; when the dissolved oxygen in the shallow sea environment cavity and the deep sea environment cavity is regulated, the dissolved oxygen in the shallow sea solution storage tank and the deep sea solution storage tank is detected through two groups of dissolved oxygen sensors, then the two groups of dissolved oxygen sensors transmit data of the dissolved oxygen to a controller, and the controller enables the two groups of dissolved oxygen regulating units to control the two groups of nitrogen cylinders to respectively transmit nitrogen into the shallow sea solution storage tank and the deep sea solution storage tank according to the transmitted data until the dissolved oxygen in the shallow sea solution storage tank and the deep sea solution storage tank reaches a specified value, and then the solutions in the shallow sea solution storage tank and the deep sea solution storage tank are respectively transmitted into the shallow sea environment cavity and the deep sea environment cavity; when the temperatures of the solution in the deep sea environment cavity and the shallow sea environment cavity are regulated, the temperatures in the shallow sea solution storage tank and the deep sea solution storage tank can be detected through temperature sensors in the shallow sea solution storage tank and the deep sea solution storage tank, then temperature data are transmitted to a controller, and then the controller respectively controls a cooler and a heater in the shallow sea solution storage tank and a cooler in the deep sea solution storage tank through two groups of temperature regulating units so as to heat or cool the solution in the shallow sea solution storage tank and the deep sea solution storage tank, and then the temperatures of the solution in the shallow sea solution storage tank and the deep sea solution storage tank reach a specified value, and then the solution in the shallow sea solution storage tank and the solution in the deep sea solution storage tank are respectively transmitted to the shallow sea environment cavity and the deep sea environment cavity for use; the device can change the temperature, pressure and dissolved oxygen of the solution in the shallow sea environment cavity and the deep sea environment cavity according to the needs, can simulate the corrosion of the sample in different environments, and has the advantages of convenient use, low limitation and high practicability.

Preferably, the outer side walls of the conveying pipe, the test box, the shallow sea solution storage tank and the deep sea solution storage tank are all provided with heat preservation layers; through the arrangement, the loss of temperature is reduced, and the reliability is improved.

Preferably, the number of the needle-shaped contacts at the lower end of the groove is three, the three needle-shaped contacts are all positioned in the middle of the lower end of the groove, and the connecting lines between the three needle-shaped contacts form an equilateral triangle; through the arrangement, the number of the needle-shaped contacts is reduced to the maximum extent under the condition of ensuring the stability of supporting the sample, and the reliability is high.

Preferably, the shape of the slot hole is conical; through the arrangement, the slotted hole can be better matched with the conical head of the conical head bolt, so that convenience is improved.

Compared with the prior art, the invention has the beneficial effects that: the automatic quick-switching device can automatically and quickly switch the sample in the deep and shallow sea environment, and can more truly reflect the corrosion condition of the sample in the deep and shallow sea alternating environment, and is convenient to use and high in reliability and practicability.

Drawings

FIG. 1 is a schematic diagram of the connections between the various devices of the present invention;

FIG. 2 is a schematic diagram of the configuration of the environment switching mechanism;

Fig. 3 is a bottom view and a top view of the clamping mechanism.

The reference numerals in the drawings: 1. a controller; 2. a shallow sea solution storage tank; 3. a nitrogen cylinder; 4. a dissolved oxygen adjusting unit; 5. an oxygen dissolving sensor; 6. a temperature sensor; 7. a cooler; 8. a heater; 9. a deep sea solution storage tank; 10. a temperature adjusting unit; 11. a pressure adjusting unit; 12. a hydraulic press; 13. a deep sea environmental chamber; 14. an environment switching mechanism; 15. a motor; 16. a shallow sea environmental chamber; 17. a pressure sensor; 18. a case cover; 19. a slip ring; 20. a circular groove; 21. a slide rail; 22. partition; 23. penetrating the cabin hole; 24. sealing filler; 25. a sample holder; 26. a sample; 27. a hydraulic seal ring; 28. needle contacts; 29. an L-shaped plate; 30. a slot hole; 31. taper head bolts; 32. a groove; 33. a boss; 34. a rectangular hole; 35. a screw hole; 36. and (3) a screw.

Detailed Description

In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. This invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As shown in fig. 1 to 3, the simulated deep and shallow sea alternating environment corrosion test device comprises a controller 1, an environment adjusting mechanism, a solution supply mechanism and a test box, wherein the controller 1 is used for controlling the environment adjusting mechanism, the solution supply mechanism and the test box, the environment adjusting mechanism is used for adjusting the environment in the test box, the environment adjusting mechanism is connected with the test box, the solution supply mechanism is connected with the test box, and the solution supply mechanism is used for conveying solution into the test box; the test box is cylindrical in shape, a cavity is arranged in the test box, a shallow sea environment cavity 16 and a deep sea environment cavity 13 are respectively arranged at the upper part and the lower part of the cavity, an environment switching mechanism 14 is arranged in the middle of the test cavity, the environment switching mechanism 14 divides the cavity of the test box into the shallow sea environment cavity 16 and the deep sea environment cavity 13 up and down, a plurality of groups of clamping mechanisms are arranged on the environment switching mechanism 14, the clamping mechanisms have the clamping and fixing functions, and the environment switching mechanism 14 is used for moving the clamping mechanisms; when a simulation test is carried out on a sample 26, a plurality of samples 26 are clamped and fixed through a plurality of clamping mechanisms on an environment switching mechanism 14 respectively, then a test box is closed, the test box is sealed, a solution supply mechanism is controlled by a controller 1 to respectively convey corresponding solutions into a shallow sea environment cavity 16 and a deep sea environment cavity 13, the environments in the shallow sea environment cavity 16 and the deep sea environment cavity 13 are respectively regulated through an environment regulating mechanism, the plurality of samples 26 on the clamping mechanisms are corroded under the action of the solutions in the shallow sea environment cavity 16 and the deep sea environment cavity 13 respectively, when the corrosion of the samples 26 under the deep sea alternating environment needs to be simulated, the plurality of clamping mechanisms are driven by the environment switching mechanism 14 to mutually move between the shallow sea environment cavity 16 and the deep sea environment cavity 13, the samples 26 are switched under the environments of the shallow sea environment cavity 16 and the deep sea environment cavity 13, the impact of the deep sea alternating environment on the samples 26 is simulated, and the corrosion condition of the samples 26 under the shallow sea alternating environment is observed; the environment switching mechanism 14 can automatically and rapidly switch the sample 26 in the deep and shallow sea environment, so that the time is saved, the use is convenient, compared with the prior art, the test environment of the sample 26 is avoided, the impact action of the deep and shallow sea alternating environment on the sample 26 can be simulated more truly, the corrosion condition of the sample 26 in the deep and shallow sea alternating environment can be reflected more truly, and the reliability and the practicability are high.

As shown in fig. 2 and fig. 1, the environment switching mechanism 14 comprises a slip ring 19, a sliding rail 21, a partition 22, two groups of motors 15 and a sealing mechanism, wherein the upper part of the test box is provided with an opening, the upper part of the test box is provided with a box cover 18, the partition 22 is in a cylindrical shape, the partition 22 is fixedly arranged in the middle of the test box, the sliding rail 21 is fixedly arranged in the middle of the partition 22, the sliding rail 21 is provided with the slip ring 19, the slip ring 19 is slidably arranged on the sliding rail 21, the slip ring 19 is connected with one group of motors 15, one group of motors 15 is used for driving the slip ring 19 to rotate around the sliding rail 21, the other group of motors 15 is connected with the box cover 18, the other group of motors 15 is used for controlling the opening and closing of the box cover 18, a plurality of groups of clamping mechanisms are arranged on the slip ring 19, the left part and the right part of the partition 22 are respectively provided with a through hole 23 which is communicated up and down, the left part and the right part of the partition 22 respectively pass through the two groups of through hole 23, and the left part and right part of the partition 22 are respectively provided with a sealing mechanism for sealing the through hole 23; when the corrosion test is carried out on the sample 26, firstly, the box cover 18 is opened through one group of motors 15, then, a plurality of samples 26 are respectively clamped and fixed through a plurality of groups of clamping mechanisms on the sliding ring 19, then, the box cover 18 is closed, then, corresponding solutions are respectively conveyed into the shallow sea environment cavity 16 and the deep sea environment cavity 13, the sample 26 is corroded in the corresponding solutions, when the impact of the deep and shallow sea alternating environment on the sample 26 is simulated, the other group of motors 15 is opened, the sliding ring 19 rotates around the sliding rail 21, the sliding ring 19 drives the sample 26 to be switched under the environments of the shallow sea environment cavity 16 and the deep sea environment cavity 13 through the clamping mechanisms, and the impact of the deep and shallow sea environment on the sample 26 is simulated; the corrosion environment of the sample 26 can be rapidly switched, the impact of the deep and shallow sea environment on the sample 26 can be simulated, and the device is convenient to use and high in practicability.

As shown in fig. 2 and 3, the clamping mechanism comprises a circular groove 20, a sample holder 25, a screw rod 36, two groups of bosses 33, two groups of L-shaped plates 29, two groups of screw holes 35 and two groups of taper bolts 31, the slip ring 19 is provided with the circular groove 20, the lower part of the circular groove 20 is provided with a screw hole, the screw rod 36 is fixedly arranged at the lower end of the sample holder 25, the screw rod 36 is screwed with the screw hole at the lower part of the circular groove 20, the diameter of the circular groove 20 is smaller than the thickness of the partition 22, the sample holder 25 is provided with a groove 32, the two groups of bosses 33 are respectively fixedly arranged at the left part and the right part of the groove 32, the left part and the right part of the sample holder 25 are respectively provided with screw holes 35, the two groups of bosses 33 are respectively provided with rectangular holes 34, the lower parts of the two groups of L-shaped plates 29 are respectively inserted into the two groups of rectangular holes 34, the two groups of L-shaped plates 29 are respectively provided with slotted holes 30, the two groups of taper bolts 31 are respectively screwed with the two groups of screw holes 35, and the two groups of taper bolts 31 respectively penetrate through the slotted holes 30 on the two groups of L plates 29 respectively; when the sample 26 is fixed on the slip ring 19, firstly, the sample 26 is placed in the groove 32, the lower end of the sample 26 is contacted with the lower end of the groove 32, then, the two groups of L-shaped plates 29 are respectively inserted into the two groups of rectangular holes 34, the upper parts of the two groups of L-shaped plates 29 are respectively pressed against the left and right parts of the upper end of the sample 26, then, the two groups of taper bolts 31 are rotated, the two groups of taper bolts 31 are respectively inserted into the two groups of slots 30, the two groups of taper bolts 31 are respectively fixed with the two groups of L-shaped plates 29, the sample 26 is fixed in the groove 32, then, the sample seat 25 is placed in the circular groove 20, then, the sample seat 25 is rotated, the sample seat 25 drives the screw 36 to be screwed with the threaded holes in the lower part of the circular groove 20, the sample seat 25 is fixed on the slip ring 19, then, the sample 26 can be driven to move in the shallow sea environment cavity 16 and the deep sea environment cavity 13 through the rotation of the slip ring 19, the clamping and fixing of the sample seat 26 are facilitated, and the sample seat 25 and the slip ring 19 can be detached, the convenience of the sample seat 25 is improved, and the overhauling convenience is improved.

As shown in fig. 3, the lower end of the groove 32 is provided with a plurality of groups of needle-shaped contacts 28, and the upper part of the L-shaped plate 29 is provided with needle-shaped contacts 28; through the arrangement, when the sample 26 is placed in the groove 32, the lower end of the sample 26 is contacted with the plurality of groups of needle-shaped contacts 28 on the groove 32, and when the L-shaped plate 29 is pressed and fastened on the sample 26, the needle-shaped contacts 28 on the L-shaped plate 29 are contacted with the sample 26, so that the contact area between the sample holder 25 and the L-shaped plate 29 and the sample 26 is reduced, the solution can be contacted with the sample 26 more, the corrosion state of the sample 26 can be reflected more truly, and the reliability is improved.

As shown in fig. 2, the sealing mechanism comprises four sets of hydraulic sealing rings 27 and a hydraulic machine 12, the four sets of hydraulic sealing rings 27 are respectively arranged at the upper end and the lower end of two sets of cabin penetrating holes 23, the hydraulic sealing rings 27 are positioned at the gaps of the sliding rail 21, the sliding ring 19 and the cabin penetrating holes 23, sealing fillers 24 are arranged in the two sets of cabin penetrating holes 23, the upper part and the lower part of the sealing fillers 24 are respectively provided with the hydraulic sealing rings 27, pipelines are arranged in the two sets of sealing fillers 24, the input ends of the pipelines are connected with the hydraulic machine 12, and the hydraulic machine 12 is connected with the controller 1; when the sample 26 is required to be corroded in a static environment, the input end of the hydraulic machine 12 is connected with an external hydraulic machine, hydraulic oil is conveyed into the sealing filler 24 through the hydraulic machine 12 and a pipeline, the sealing filler 24 is expanded, the sealing filler 24 is further extruded to the hydraulic sealing ring 27, and sealing among the sliding rail 21, the sliding ring 19 and the cabin penetrating hole 23 is realized through the extrusion force of the hydraulic sealing ring 27; when the sample 26 needs to be switched between the shallow sea environment cavity 16 and the deep sea environment cavity 13, the hydraulic oil in the sealing filler 24 is pumped out through the hydraulic press 12, and at the moment, the hydraulic sealing ring 27 realizes the sealing of the sliding ring 19 when the sliding ring 19 rotates around the partition 22 through weaker extrusion force to the sliding ring 19; the sealing state can be adjusted according to the requirement, so that the convenience is improved.

As shown in fig. 1, the solution supply mechanism comprises a shallow sea solution storage tank 2 and a deep sea solution storage tank 9, wherein a cooler 7, a temperature sensor 6, a dissolved oxygen sensor 5 and a nitrogen bottle 3 are arranged on the shallow sea solution storage tank 2 and the deep sea solution storage tank 9, a heater 8 is also arranged in the shallow sea solution storage tank 2, a conveying pump is arranged on the shallow sea solution storage tank 2 and the deep sea solution storage tank 9, a conveying pipe is arranged on the conveying pump, a valve is arranged on the conveying pipe, the shallow sea solution storage tank 2 and a shallow sea environment cavity 16 form a circulation loop through the conveying pipe of one group of conveying pumps and the conveying pipe of the conveying pump, the deep sea solution storage tank 9 and a deep sea environment cavity 13 form a circulation loop through the conveying pipe of the other group of conveying pumps, and the conveying pump, the valve, the cooler 7, the temperature sensor 6 and the nitrogen bottle 3 are all connected with the controller 1; when the solution is conveyed into the shallow sea environment cavity 16 and the deep sea environment cavity 13, the solution in the shallow sea solution storage tank 2 can enter the shallow sea environment cavity 16 for use through one group of conveying pumps and conveying pipes, and the solution in the deep sea solution storage tank 9 can enter the deep sea environment cavity 13 for use through the other group of conveying pumps and conveying pipes, so that the solution is convenient to convey.

As shown in fig. 1, the environment adjusting mechanism comprises a temperature adjusting unit 10, a pressure adjusting unit 11, an oxygen dissolving adjusting unit 4 and two groups of pressure sensors 17, wherein the two groups of pressure sensors 17 are respectively arranged in a shallow sea environment cavity 16 and a deep sea environment cavity 13, the two groups of pressure sensors 17 are connected with the pressure adjusting unit 11, the pressure adjusting unit 11 is connected with a conveying pump and a valve, the pressure adjusting unit 11 is arranged on a controller 1, the temperature adjusting unit 10 is arranged on the controller 1, the temperature adjusting unit 10 is connected with a cooler 7, a heater 8 and a temperature sensor 6, the oxygen dissolving adjusting unit 4 is arranged on the controller 1, the oxygen dissolving adjusting unit 4 is connected with a nitrogen cylinder 3 and an oxygen dissolving sensor 5, and output ends of the two groups of nitrogen cylinders 3 are respectively connected with a shallow sea solution storage tank 2 and a deep sea solution storage tank 9 through the two groups of oxygen dissolving adjusting units 4; when a corrosion test is carried out on a sample 26, two groups of pressure sensors 17 respectively transmit the pressure parameters of seawater in a shallow sea environment cavity 16 and a deep sea environment cavity 13 to a controller 1 through two groups of pressure regulating units 11, then the controller 1 enables the pressure regulating units 11 to control valves on two groups of conveying pumps and conveying pipes according to the set pressure parameters, so that the solution pressures of the shallow sea solution storage tank 2 and the deep sea solution storage tank 9 respectively conveyed to the shallow sea environment cavity 16 and the deep sea environment cavity 13 through the two groups of conveying pumps are changed, and the solution pressures in the shallow sea environment cavity 16 and the deep sea environment cavity 13 are regulated to proper pressures; when the dissolved oxygen amount in the shallow sea environment cavity 16 and the deep sea environment cavity 13 is regulated, the dissolved oxygen amount in the shallow sea solution storage tank 2 and the deep sea solution storage tank 9 is detected through the two groups of dissolved oxygen sensors 5, then the two groups of dissolved oxygen sensors 5 transmit the dissolved oxygen amount data to the controller 1, the controller 1 enables the two groups of dissolved oxygen regulating units 4 to control the two groups of nitrogen cylinders 3 to respectively transmit nitrogen into the shallow sea solution storage tank 2 and the deep sea solution storage tank 9 according to the transmitted data until the dissolved oxygen amount in the shallow sea solution storage tank 2 and the deep sea solution storage tank 9 reaches a specified value, and then the solutions in the shallow sea solution storage tank 2 and the deep sea solution storage tank 9 are respectively transmitted into the shallow sea environment cavity 16 and the deep sea environment cavity 13; when the temperature of the solution in the shallow sea environment chamber 13 and the shallow sea environment chamber 16 is regulated, the temperature in the shallow sea solution storage tank 2 and the deep sea solution storage tank 9 can be detected by the temperature sensor 6 in the shallow sea solution storage tank 2 and the deep sea solution storage tank 9, then the temperature data is transmitted to the controller 1, then the controller 1 respectively controls the cooler 7 and the heater 8 in the shallow sea solution storage tank 2 and the cooler 7 in the deep sea solution storage tank 9 through the two groups of temperature regulating units 10 so as to heat or cool the solution in the shallow sea solution storage tank 2 and the deep sea solution storage tank 9, and then the temperature of the solution in the shallow sea solution storage tank 2 and the deep sea solution storage tank 9 reaches a specified value, and then the solution in the shallow sea solution storage tank 2 and the deep sea solution storage tank 9 is respectively transmitted to the shallow sea environment chamber 16 and the deep sea environment chamber 13 for use; the temperature, pressure and dissolved oxygen of the solution in the shallow sea environment cavity 16 and the deep sea environment cavity 13 can be changed according to the requirements, the corrosion of the sample 26 in different environments can be simulated, the use is convenient, the limitation is low, and the practicability is high.

The outer side walls of the conveying pipe, the test box, the shallow sea solution storage tank 2 and the deep sea solution storage tank 9 are provided with heat insulation layers; through the arrangement, the loss of temperature is reduced, and the reliability is improved.

As shown in fig. 3, the number of needle-shaped contacts 28 at the lower end of the groove 32 is three, and the three needle-shaped contacts 28 are all positioned in the middle of the lower end of the groove 32, and the connecting lines between the three needle-shaped contacts 28 form an equilateral triangle; with the above arrangement, the number of needle contacts 28 used is reduced to the maximum extent and the reliability is high while ensuring the stability of the support for the sample 26.

As shown in fig. 3, the slot 30 is tapered in shape; through the arrangement, the slotted hole 30 can be better matched with the conical head of the conical head bolt 31, so that convenience is improved.

When the device is used, firstly, the required temperature, pressure, dissolved oxygen and alternating frequency in the deep sea environment cavity 13 and the shallow sea environment cavity 16 are input into the controller 1 in advance, then the box cover 18 is opened under the drive of the motor 15, then a plurality of samples 26 are respectively arranged in a plurality of sample seats 25 and fixed, then a plurality of sample seats 25 are respectively fixed in a plurality of circular grooves 20 on the slip ring 19, then the box cover 18 is closed, then the temperature and the dissolved oxygen of the solution in the shallow sea solution storage tank 2 and the deep sea solution storage tank 9 are regulated by the temperature regulating unit 10 and the dissolved oxygen regulating unit 4 through the controller 1, then the solution in the shallow sea solution storage tank 2 and the deep sea solution storage tank 9 is respectively conveyed into the shallow sea environment cavity 16 and the deep sea environment cavity 13 through the pressure regulating unit 11, the solution pressure in the shallow sea environment cavity 16 and the deep sea environment cavity 13 is kept at proper values, then the slip ring 19 is rotated around the partition 22 through the other group of motors 15, the sample seats 19 are driven by the slip ring 19 to be between the shallow sea environment cavity 16 and the deep sea environment cavity 13, and the alternating environment of the shallow sea environment is sealed by the sample seats 16 and the partition 22, and the deep sea environment can be sealed by the deep sea environment under the deep sea environment and the deep sea environment is sealed by the seal of the deep sea environment and the deep sea environment under the seal environment and the deep sea environment.

In summary, the main beneficial effects of the invention are as follows;

1. The corrosion environment of the sample 26 can be automatically and rapidly switched, the impact of the alternating environment of the deep sea and the shallow sea on the sample 26 can be simulated, and the device is convenient to use and high in reliability.

2. Can be used for carrying out corrosion tests for simulating the sample 26 under different temperatures, different pressures and different dissolved oxygen amounts, and has convenient use and low limitation.

3. The whole device is automatically operated, and has convenient use and low labor intensity.

The installation mode, the connection mode or the setting mode of the test device for simulating the alternating environment corrosion in the deep and shallow sea are all common mechanical modes, and can be implemented as long as the beneficial effects of the test device can be achieved; the shallow sea solution storage tank 2, the dissolved oxygen sensor 5, the temperature sensor 6, the temperature regulating unit 10, the hydraulic press 12, the environment switching mechanism 14, the pressure sensor 17, the sliding rail 21, the sealing packing 24, the hydraulic sealing ring 27, the needle-shaped contact 28, the taper head bolt 31 and the sliding ring 19 of the simulated deep and shallow sea alternating environment corrosion test device are all purchased in the market, and can be installed and operated by a person skilled in the art according to the attached use instruction without the creative labor of the person skilled in the art.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (10)

1. A test device for simulating deep and shallow sea alternating environment corrosion comprises a controller (1); the device is characterized by further comprising an environment adjusting mechanism, a solution supply mechanism and a test box, wherein the controller (1) is connected with the environment adjusting mechanism, the solution supply mechanism and the test box, the controller (1) is used for controlling the environment adjusting mechanism, the solution supply mechanism and the test box, the environment adjusting mechanism is used for adjusting the environment in the test box, the environment adjusting mechanism is connected with the test box, the solution supply mechanism is connected with the test box, and the solution supply mechanism is used for conveying the solution into the test box; the shape of the test box is cylindrical, a cavity is arranged in the test box, a shallow sea environment cavity (16) and a deep sea environment cavity (13) are respectively arranged at the upper part and the lower part of the cavity, an environment switching mechanism (14) is arranged at the middle part of the test cavity, the cavity of the test box is divided into the shallow sea environment cavity (16) and the deep sea environment cavity (13) by the environment switching mechanism (14), a plurality of groups of clamping mechanisms are arranged on the environment switching mechanism (14), the clamping mechanisms have the function of clamping and fixing, and the environment switching mechanism (14) is used for moving the clamping mechanisms.

2. The simulated deep and shallow sea alternating environment corrosion test device according to claim 1, wherein the environment switching mechanism (14) comprises a slip ring (19), a sliding rail (21), a partition (22), two groups of motors (15) and a sealing mechanism, the upper part of the test box is an opening, a box cover (18) is arranged at the upper part of the test box, the partition (22) is cylindrical in shape, the partition (22) is fixedly arranged in the middle part of the test box, the sliding rail (21) is fixedly arranged in the middle part of the partition (22), the sliding rail (21) is provided with the sliding ring (19), the sliding ring (19) is slidably arranged on the sliding rail (21), the sliding ring (19) is connected with one group of motors (15), one group of motors (15) are used for driving the sliding ring (19) to rotate around the sliding rail (21), the other group of motors (15) are connected with the box cover (18), a plurality of groups of clamping mechanisms are arranged on the upper part and the lower part of the partition (22) of the partition, the two groups of the sliding ring (22) are respectively provided with two groups of upper part and lower part of the sliding ring (21) of the sliding ring (19) are respectively provided with two groups of sliding ring (23) penetrating through two groups of sealing mechanisms (23) respectively, and two groups of sealing mechanisms (23) are respectively penetrated through two groups of the two groups of sliding ring structures are respectively arranged on the two sides of the sliding ring (23.

3. The device for simulating deep and shallow sea alternating environment corrosion test according to claim 2, wherein the clamping mechanism comprises a circular groove (20), a sample seat (25), a screw rod (36), two groups of bosses (33), two groups of L-shaped plates (29), two groups of screw holes (35) and two groups of taper head bolts (31), the circular groove (20) is arranged on the slip ring (19), a threaded hole is arranged at the lower part of the circular groove (20), the screw rod (36) is fixedly arranged at the lower end of the sample seat (25), the screw rod (36) is screwed with the threaded hole at the lower part of the circular groove (20), the diameter of the circular groove (20) is smaller than the thickness of a partition (22), grooves (32) are arranged on the sample seat (25), the two groups of bosses (33) are respectively fixedly arranged at the left part and the right part of the groove (32), rectangular holes (34) are respectively arranged on the two groups of bosses (33), the lower parts of the two groups of L-shaped plates (29) are respectively inserted into the rectangular holes (34), the two groups of taper head bolts (31) are respectively arranged on the two groups of the screw holes (31), and the two groups of taper head bolts (30) are respectively arranged on the two groups of the screw holes (30).

4. A simulated shallow sea alternating environment corrosion test device as claimed in claim 3, further comprising a plurality of groups of needle contacts (28), wherein a plurality of groups of needle contacts (28) are provided at the lower end of said recess (32), and needle contacts (28) are provided at the upper part of said L-shaped plate (29).

5. The simulated deep and shallow sea alternating environment corrosion test device according to claim 2, wherein the sealing mechanism comprises four groups of hydraulic sealing rings (27) and a hydraulic press (12), the four groups of hydraulic sealing rings (27) are respectively arranged at the upper end and the lower end of two groups of through-cabin holes (23), the hydraulic sealing rings (27) are positioned at the gaps of the sliding rail (21), the sliding ring (19) and the through-cabin holes (23), sealing fillers (24) are arranged in the two groups of through-cabin holes (23), the hydraulic sealing rings (27) are arranged at the upper part and the lower part of the sealing fillers (24), pipelines are arranged in the two groups of sealing fillers (24), the input ends of the pipelines are connected with the hydraulic press (12), and the hydraulic press (12) is connected with the controller (1).

6. The simulated deep and shallow sea alternating environment corrosion test device according to claim 1, wherein the solution supply mechanism comprises a shallow sea solution storage tank (2) and a deep sea solution storage tank (9), the shallow sea solution storage tank (2) and the deep sea solution storage tank (9) are respectively provided with a cooler (7), a temperature sensor (6), an oxygen dissolving sensor (5) and a nitrogen cylinder (3), the shallow sea solution storage tank (2) is further provided with a heater (8), the shallow sea solution storage tank (2) and the deep sea solution storage tank (9) are respectively provided with a conveying pump, the conveying pumps are respectively provided with a conveying pipe, the conveying pipes are respectively provided with a valve, the shallow sea solution storage tank (2) and a shallow sea environment cavity (16) form a circulation loop through the conveying pipes of one group of conveying pumps and the conveying pumps, the deep sea solution storage tank (9) and the deep sea environment cavity (13) form a circulation loop through the conveying pumps of the other group of conveying pumps, and the conveying pumps, the valves, the cooler (7), the temperature sensor (6) and the nitrogen controller (3) are respectively connected with the shallow sea environment cavity (1).

7. The simulated deep and shallow sea alternating environment corrosion test device according to claim 1, wherein the environment regulating mechanism comprises a temperature regulating unit (10), a pressure regulating unit (11), a dissolved oxygen regulating unit (4) and two groups of pressure sensors (17), the two groups of pressure sensors (17) are respectively installed in a shallow sea environment cavity (16) and a deep sea environment cavity (13), the two groups of pressure sensors (17) are both connected with the pressure regulating unit (11), the pressure regulating unit (11) is connected with a conveying pump and a valve, the pressure regulating unit (11) is installed on the controller (1), the temperature regulating unit (10) is connected with a cooler (7), a heater (8) and a temperature sensor (6), the dissolved oxygen regulating unit (4) is installed on the controller (1), the dissolved oxygen regulating unit (4) is connected with a nitrogen cylinder (3) and a dissolved oxygen sensor (5), and the output ends of the two groups of nitrogen cylinders (3) are respectively connected with a shallow storage tank (2) and a deep sea solution (9) through the two groups of dissolved oxygen regulating units (4).

8. The test device for simulating deep-shallow sea alternating environment corrosion according to claim 7, wherein the outer side walls of the conveying pipe, the test box, the shallow sea solution storage tank (2) and the deep sea solution storage tank (9) are provided with heat insulation layers.

9. The test device for simulating deep and shallow sea alternating environment corrosion according to claim 4, wherein the number of the needle-shaped contacts (28) at the lower end of the groove (32) is three, the three needle-shaped contacts (28) are all located in the middle of the lower end of the groove (32), and the connecting lines between the three needle-shaped contacts (28) form an equilateral triangle.

10. A test apparatus for simulating deep and shallow sea alternating environment corrosion according to claim 3, wherein said slot (30) is tapered in shape.