CN211206194U - Corrosion loop experiment device for seawater dry-wet alternative environment - Google Patents
Corrosion loop experiment device for seawater dry-wet alternative environment Download PDFInfo
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- CN211206194U CN211206194U CN201922278035.2U CN201922278035U CN211206194U CN 211206194 U CN211206194 U CN 211206194U CN 201922278035 U CN201922278035 U CN 201922278035U CN 211206194 U CN211206194 U CN 211206194U
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Abstract
The utility model relates to a sea water is wet environment's corruption circuit experimental apparatus futilely in turn mainly includes: the device comprises a water storage tank, an experimental box, a temperature control system, a liquid injection system and a liquid drainage system. The water storage tank provides a water source for the loop device; the experimental box is made of polytetrafluoroethylene materials, two discs are fixed in the middle of the top of the experimental box cover, and the periphery of each disc is fixed with a sample through bolts; the temperature control system consists of a digital control box and a temperature sensor; the liquid injection system box comprises a liquid injection pump, a liquid injection electromagnetic valve, a liquid injection liquid level sensor and a liquid injection digital switch system box; the liquid discharge system comprises a liquid discharge pump, a liquid discharge electromagnetic valve, a liquid discharge liquid level sensor and a liquid discharge digital switch system box. The utility model has the advantages of automatic strong, operating duration is long, water resource reuse, it has important practical meaning to the corrosion research in the sea water wet-dry alternative environment.
Description
Technical Field
The utility model relates to an electromechanical field of equipping, concretely relates to sea water is corrosion circuit experimental apparatus of wet environment in turn futilely.
Background
Marine corrosion refers to the corrosion of metal components that occurs in a seawater environment. Seawater is a natural strong electrolyte solution, contains salts mainly comprising sodium chloride, has high content of chloride ions in seawater, and has very low anode polarization retardation in most metal materials, so that the corrosion speed of the materials is quite high; and a large amount of oxygen is dissolved in the seawater, and except magnesium and alloy thereof with negative potential, most metal materials can generate oxygen depolarization corrosion in the seawater. Marine microorganisms are often attached to marine metals, grow and propagate on the metal surface, generate corrosive substances or promote electrochemical corrosion, cause local corrosion such as pitting corrosion and crevice corrosion on the surface of a metal structure, and accelerate corrosion of the metal by acidic components such as hydrogen sulfide contained in metabolites and solid decomposers of the marine microorganisms. In addition, the surface of the metal material exposed to the marine atmospheric environment is often in a state of alternate dry and wet conditions, which are mainly caused by diurnal temperature changes, air humidity changes and the action of wave currents in the marine environment, and can result in high salt concentration on the surface of the metal material, thereby affecting the corrosion rate of the metal material. The frequency of the alternation between dry and wet is a main factor influencing the metal corrosion failure process in the alternation between dry and wet environment, and is realized by influencing the electrochemical corrosion process of seawater through the time proportion of soaking and drying the metal seawater. In summary, marine corrosion poses a great threat to the safety construction, production operation and the like of steel materials in the fields of marine oil and gas field development, ship construction and the like at present, and corrosion experimental research under specific environmental materials needs to be carried out.
At present, the research on the corrosion loop experimental device in the environment of simulating seawater dry-wet alternation is less, the device capable of realizing seawater dry-wet alternation is too simple, the experimental result is not accurate enough, the automation cannot be realized mostly, the running time is short, and the water resource waste is serious. Therefore, it is necessary to design a corrosion loop device for seawater dry-wet alternation simulation environment, which has the advantages of strong automation, long operation time and water resource recycling.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving the not enough that exists among the above-mentioned technique, design a sea water dry and wet corrosion loop experimental apparatus who alternates the environment, can be used to simulate the sea water dry and wet corrosion experiment research of steel material in the environment of alternating.
The design scheme of the utility model is that:
the utility model provides a sea water is corrosion circuit experimental apparatus of wet and dry alternative environment, mainly includes: storage water tank, experimental box, temperature control system, notes liquid system, flowing back system. The water storage tank provides a water source for the loop device; the experimental box is made of polytetrafluoroethylene materials, two discs are fixed in the middle of the top of the experimental box cover, experimental samples are fixed around the discs through bolts, and the top of the experimental box cover is provided with an insertion hole for a temperature sensor and a liquid level sensor; the temperature control system consists of a digital control box and a temperature sensor; the liquid injection system comprises a liquid injection pump, a liquid injection electromagnetic valve, a liquid injection liquid level sensor and a liquid injection digital switch system box, wherein the liquid injection digital switch system box comprises a liquid injection time control switch and a liquid injection liquid level sensor switch, and the liquid injection digital switch system box simultaneously controls the start and the stop of the liquid injection pump and the liquid injection electromagnetic valve; the liquid discharge system comprises a liquid discharge pump, a liquid discharge electromagnetic valve, a liquid discharge liquid level sensor and a liquid discharge digital switch system box, wherein the liquid discharge digital switch system box comprises a liquid discharge time control switch and a liquid discharge liquid level sensor switch, and the liquid discharge digital switch system box controls the liquid discharge pump and the liquid discharge electromagnetic valve to be started and stopped simultaneously.
Preferably, the liquid injection digital switch system box comprises a liquid injection time control switch and a liquid injection liquid level sensor switch, and the liquid drainage digital switch system box comprises a liquid drainage time control switch and a liquid drainage liquid level sensor switch.
Preferably, the liquid injection digital switch system box controls the liquid injection pump and the liquid injection electromagnetic valve to be started and stopped simultaneously, and the liquid discharge digital switch system box controls the liquid discharge pump and the liquid discharge electromagnetic valve to be started and stopped simultaneously.
Preferably, a digital control box in the temperature control system can be used for manually setting an experiment temperature value, and the digital control box can be used for displaying the real-time temperature tested by a temperature sensor in the experiment box.
The utility model relates to a sea water is wet environment's corruption circuit experimental apparatus futilely concrete step as follows:
the storage water tank is connected with a liquid injection pipeline, the liquid injection pipeline is connected with the experimental box, the experimental box is connected with a liquid discharge pipeline, and the liquid discharge pipeline is connected with the storage water tank, so that the experimental device in an annular type is designed. The liquid injection pipeline is provided with a liquid injection pump and a liquid injection electromagnetic valve, the liquid injection pump and the liquid injection electromagnetic valve are controlled by a liquid injection time control switch and a liquid injection liquid level sensor switch in a liquid injection digital switch system box, the liquid injection time control switch controls the liquid injection pump and the liquid injection electromagnetic valve to be switched on and off to inject electrolyte solution prepared by experiments into the experimental box at regular time, when the solution in the experimental box reaches a certain height and contacts the liquid injection liquid level sensor, the liquid injection liquid level sensor switch controls the liquid injection pump and the liquid injection electromagnetic valve to stop working, and at the moment, a sample; install flowing back pump and flowing back solenoid valve on the flowing back pipeline, flowing back pump and flowing back solenoid valve are by flowing back time control switch and flowing back level sensor on-off control in the flowing back digital switch system case, the electrolyte solution of switch timing in the experiment case of flowing back time control on-off control flowing back pump and flowing back solenoid valve discharges, flowing back level sensor signal control flowing back pump and flowing back solenoid valve stop the flowing back, solution arranges to a take the altitude in the experiment case, make flowing back level sensor break away from the liquid level, annotate liquid level sensor on-off control flowing back pump and flowing back solenoid valve stop work, the sample is in dry state in the experiment case this moment.
When the utility model is used, the test sample is firstly fixed by the bolts around two discs in the middle of the top of the experimental box cover of the experimental box, so that the test sample is prevented from moving and causing experimental errors. And after the sample preparation is finished, time control switch time setting in the liquid injection digital switch system box and the liquid discharge digital switch system box is prepared. After the time setting finishes, liquid digital switch system case and flowing back digital switch system case are annotated in the switch-on, and the priming pump is opened with annotating the liquid solenoid valve, in pouring the electrolyte into the experiment case in the water storage tank, the submergence sample, when solution reaches the liquid level sensor is annotated in the contact of certain height in the experiment case, annotate liquid level sensor feedback signal to annotate the liquid sensor switch in liquid digital switch system case, control priming pump and annotate liquid solenoid valve stop work, annotate the liquid stage and end, the sample is in and soaks the stage. After the test box is soaked for a period of time, the preset soaking time is reached, the liquid drainage time control switch in the liquid drainage digital switch system box is started, the liquid drainage pump and the liquid drainage electromagnetic valve start to work, the electrolyte solution in the experiment box starts to be drained to the water storage box, when the liquid level in the experiment box is separated from the liquid drainage liquid level sensor, the liquid drainage sensor feeds back a signal to the liquid drainage sensor switch in the liquid drainage digital switch system box to control the liquid drainage pump and the liquid drainage electromagnetic valve to stop working, at the moment, the experiment box stops draining liquid to the water storage box, the liquid drainage stage is finished. After the drying is carried out for a period of time, the preset drying time is reached, the liquid injection time control switch in the liquid injection digital switch system box is started, the liquid injection pump and the liquid injection electromagnetic valve are opened, the electrolyte in the water storage box is injected into the experiment box, the immersed sample … … begins to be in the soaking and drying processes along with the extension of the operation time, and therefore the dry-wet alternate circulation of the sample is achieved. The temperature control system can set the temperature of an experiment according to the requirements of the field environment, and the temperature sensor can test the real-time temperature in the experiment box and display the real-time temperature on the digital system box. The time of sample soaking and drying can be set by the time control switch time in the liquid injection digital switch system box and the liquid discharge digital switch system box, and different soaking time and drying time are set to control the working time of the liquid injection pump, the liquid injection electromagnetic valve, the liquid discharge pump and the liquid discharge electromagnetic valve, so that the time ratio of dry-wet alternate circulation of the field environment is realized, and the purpose of field corrosion environment simulation is achieved.
The utility model discloses a sea water is wet in turn simulation environment's corruption loop device futilely that has automatic strong, operating duration is long, a great deal of advantage of water resource reuse, has very important practical meaning to the corruption research in the sea water environment.
Drawings
FIG. 1 is a schematic structural diagram of an experimental apparatus for corrosion loop in a seawater dry-wet alternating environment.
In the figure, 1, a liquid injection pump, 2, a liquid injection electromagnetic valve, 3, a water storage tank, 4, a liquid discharge electromagnetic valve, 5, a liquid discharge pipeline, 6, a liquid discharge digital switch system box, 7, a liquid discharge pump, 8, a liquid discharge liquid level sensor, 9, a liquid injection liquid level sensor, 10, a temperature sensor, 11, a disc, 12, a sample, 13, an experiment box, 14, a digital system box, 15, a liquid injection digital switch system box, 16, a liquid injection pipeline and 17, an electrolyte solution.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in FIG. 1, the water storage tank 3 is connected with the liquid injection pipeline 16, the liquid injection pipeline 16 is connected with the experimental box 13, the experimental box 13 is connected with the liquid discharge pipeline 5, and the liquid discharge pipeline 5 is connected with the water storage tank 3, so that the loop type experimental device is designed. The liquid injection pipeline 16 is provided with a liquid injection pump 1 and a liquid injection electromagnetic valve 2, the liquid injection pump 1 and the liquid injection electromagnetic valve 2 are controlled by a liquid injection time control switch and a liquid injection liquid level sensor switch in a liquid injection digital switch system box 15, the liquid injection time control switch controls the switches of the liquid injection pump 1 and the liquid injection electromagnetic valve 3 to inject electrolyte solution 17 configured in an experiment into the experiment box 13 at regular time, when the electrolyte solution 17 in the experiment box 13 reaches a certain height and contacts the liquid injection liquid level sensor 9, the liquid injection liquid level sensor switch controls the liquid injection pump 1 and the liquid injection electromagnetic valve 2 to stop working, and at the moment, a sample 12 in the experiment box 13 is in a; install flowing back pump 7 and flowing back solenoid valve 4 on flowing back pipeline 5, flowing back pump 7 and flowing back solenoid valve 4 are by flowing back time control switch and the flowing back level sensor on-off control in flowing back digital switch system case 6, the switch of flowing back time control on-off control flowing back pump 7 and flowing back solenoid valve 4 is regularly discharged electrolyte solution 17 in experimental box 3, 8 signal control flowing back pump 7 of flowing back level sensor and flowing back solenoid valve 4 stop the flowing back, solution row to a take the altitude in experimental box 13, make flowing back level sensor 8 break away from the liquid level, flowing back level sensor on-off control flowing back pump 7 and flowing back solenoid valve 4 stop work, the sample is in dry state in the experimental box this moment.
When using the utility model discloses a device, earlier in the middle of experimental box 13 caping portion two discs 11 all around with bolt fastening experiment sample 12, prevent that sample 12 from removing and arousing experimental error. After the preparation of the sample 12, the time-controlled on-off time setting in the liquid injection digital switch system box 15 and the liquid discharge digital switch system box 6 is prepared. After the time setting is finished, the liquid injection digital switch system box 15 and the liquid drainage digital switch system box 6 are switched on, the liquid injection pump 1 and the liquid injection electromagnetic valve 2 are opened, the electrolyte solution 17 in the water storage tank 3 is injected into the experimental box 13, the sample 12 is immersed, when the electrolyte solution 17 in the experimental box 13 reaches a certain height to contact the liquid injection liquid level sensor 9, the liquid injection liquid level sensor 9 feeds back a signal to the liquid injection sensor switch in the liquid injection digital switch system box 15, the liquid injection pump 1 and the liquid injection electromagnetic valve 2 are controlled to stop working, the liquid injection stage is finished, and the sample 12 is in the soaking stage. After the test box is soaked for a period of time, the preset soaking time is reached, the liquid drainage time control switch in the liquid drainage digital switch system box 6 is started, the liquid drainage pump 7 and the liquid drainage electromagnetic valve 4 start to work, the electrolyte solution 17 in the test box 13 starts to be discharged to the water storage box 3, when the liquid level in the test box 13 is separated from the liquid drainage liquid level sensor 8, the liquid drainage sensor 8 feeds back a signal to the liquid drainage sensor switch in the liquid drainage digital switch system box 6 to control the liquid drainage pump 7 and the liquid drainage electromagnetic valve 4 to stop working, at the moment, the test box 13 stops draining liquid to the water storage box 3, the liquid drainage stage is finished, and the test sample. After drying for a period of time, reaching the preset drying time, starting a liquid injection time control switch in the liquid injection digital switch system box 15, starting the liquid injection pump 1 and the liquid injection electromagnetic valve 2, injecting the electrolyte solution 17 in the water storage tank 3 into the experiment box 13, beginning to immerse the sample 12 … …, and continuously soaking and drying the sample 12 along with the prolonging of the operation time, thereby realizing the alternate cycle of drying and wetting the sample 12. The temperature control system can set the temperature of the experiment according to the requirements of the field environment, and the temperature sensor 10 can test the real-time temperature in the experimental box 13 and display the real-time temperature on the digital system box 14. The time for wetting and drying the sample 12 can be set by the time control switch time in the liquid injection digital switch system box 15 and the liquid discharge digital switch system box 6, and different wetting time and drying time are set to control the working time of the liquid injection pump 1, the liquid injection electromagnetic valve 2, the liquid discharge pump 7 and the liquid discharge electromagnetic valve 4, so that the time ratio of dry-wet alternate circulation of the field environment is realized, and the purpose of simulating the field corrosion environment is achieved.
Claims (5)
1. The utility model provides a sea water is corrosion circuit experimental apparatus of wet and dry alternative environment, mainly includes: the device comprises a water storage tank (3), an experimental box (13), a temperature control system, a liquid injection system and a liquid drainage system; the water storage tank (3) provides a water source for the loop device; the experimental box (13) is made of polytetrafluoroethylene, two discs (11) are fixed in the middle of the top of the experimental box (13) cover, and the periphery of each disc (11) is fixed with a sample (12) through bolts; the temperature control system consists of a digital control box (14) and a temperature sensor (10); the liquid injection system comprises a liquid injection pump (1), a liquid injection electromagnetic valve (2), a liquid injection liquid level sensor (9) and a liquid injection digital switch system box (15); the liquid discharge system comprises a liquid discharge pump (7), a liquid discharge electromagnetic valve (4), a liquid discharge liquid level sensor (8) and a liquid discharge digital switch system box (6).
2. The corrosion loop experimental device for seawater dry-wet alternate environment according to claim 1, characterized in that: the liquid injection system comprises a liquid injection pump (1), a liquid injection electromagnetic valve (2), a liquid injection liquid level sensor (9) and a liquid injection digital switch system box (15); and the liquid injection digital switch system box (15) controls the opening and closing of the liquid injection pump (1) and the liquid injection electromagnetic valve (2) simultaneously.
3. The corrosion loop experimental device for seawater dry-wet alternate environment according to claim 1, characterized in that: the liquid discharge system comprises a liquid discharge pump (7), a liquid discharge electromagnetic valve (4), a liquid discharge liquid level sensor (8) and a liquid discharge digital switch system box (6); and the liquid discharge digital switch system box (6) controls the opening and closing of the liquid discharge pump (7) and the liquid discharge electromagnetic valve (4) simultaneously.
4. The corrosion loop experimental device for seawater dry-wet alternate environment according to claim 1, characterized in that: the temperature control system consists of a digital control box (14) and a temperature sensor (10), the digital control box (14) can set the temperature of an experiment according to the requirements of the field environment, and the temperature sensor (10) can test the real-time temperature of the experiment box (13) and display the real-time temperature in the digital control box (14).
5. The corrosion loop experimental device for seawater dry-wet alternate environment according to claim 1, characterized in that: the working time of the liquid injection pump (1), the liquid injection electromagnetic valve (2), the liquid discharge pump (7) and the liquid discharge electromagnetic valve (4) is controlled by setting different soaking time and drying time through the time control switch in the liquid injection digital switch system box (15) and the liquid discharge digital switch system box (6), so that the time ratio of dry-wet alternate circulation of the field environment is realized, and the purpose of field corrosion environment simulation is achieved.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922278035.2U CN211206194U (en) | 2019-12-17 | 2019-12-17 | Corrosion loop experiment device for seawater dry-wet alternative environment |
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| CN201922278035.2U CN211206194U (en) | 2019-12-17 | 2019-12-17 | Corrosion loop experiment device for seawater dry-wet alternative environment |
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| CN211206194U true CN211206194U (en) | 2020-08-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110865023A (en) * | 2019-12-17 | 2020-03-06 | 西南石油大学 | Corrosion loop experiment device for seawater dry-wet alternative environment |
| CN112213256A (en) * | 2020-10-09 | 2021-01-12 | 西南石油大学 | Testing arrangement of bacterium to steel corrosion influence under oil gas pipeline cathodic polarization |
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2019
- 2019-12-17 CN CN201922278035.2U patent/CN211206194U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110865023A (en) * | 2019-12-17 | 2020-03-06 | 西南石油大学 | Corrosion loop experiment device for seawater dry-wet alternative environment |
| CN112213256A (en) * | 2020-10-09 | 2021-01-12 | 西南石油大学 | Testing arrangement of bacterium to steel corrosion influence under oil gas pipeline cathodic polarization |
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Granted publication date: 20200807 Termination date: 20201217 |