阅读说明：本技术 湿热、电流腐蚀耦合作用试验模拟装置及其使用方法 (Damp-heat and current corrosion coupling effect test simulation device and using method thereof ) 是由 张凡孟 汪坤 曾辉 于 2020-04-20 设计创作，主要内容包括：本发明公开了一种湿热、电流腐蚀耦合作用试验模拟装置及其使用方法。该装置至少包括外部防护箱体、通电腐蚀系统、循环供水系统、循环加热系统和控制系统；该使用方法首先按照试验方案的要求制作相应试件。本发明通过外部防护箱体的使用,不仅可以减少试验人员触电的风险,同时也可以减少挥发性腐蚀液体与试验人员的接触；循环供水系统可通过调节腐蚀性溶液的流量,控制通电池内的PH值及相关离子浓度的稳定；循环加热系统可使外部防护箱体内空气保持恒温；控制系统具有加热空气和自动化控制添加腐蚀性溶液的功能,同时可以记录构件的电流及电压的变化值。从而可大大降低劳动强度,适用于实验室环境内多因素长时间模拟环境试验。(The invention discloses a damp-heat and current corrosion coupling effect test simulation device and a using method thereof. The device at least comprises an external protection box body, an electrified corrosion system, a circulating water supply system, a circulating heating system and a control system; the using method firstly manufactures corresponding test pieces according to the requirements of the test scheme. By using the external protection box body, the electric shock risk of a tester can be reduced, and the contact between volatile corrosive liquid and the tester can be reduced; the circulating water supply system can control the pH value in the electrified pond and the stability of the concentration of related ions by adjusting the flow of the corrosive solution; the circulating heating system can keep the air in the external protective box body at a constant temperature; the control system has the functions of heating air and automatically controlling the addition of corrosive solution, and can record the current and voltage change values of the component. Therefore, the labor intensity can be greatly reduced, and the device is suitable for multi-factor long-time simulation environmental tests in laboratory environments.)

1. The utility model provides a damp and hot, experimental analogue means of galvanic corrosion coupling which characterized in that: the device at least comprises an external protection box body (1), an electrified corrosion system, a circulating water supply system, a circulating heating system and a control system;

the power-on corrosion system at least comprises a digital display direct-current stabilized power supply (2) and a stainless steel ring (4), wherein the positive electrode and the negative electrode of the digital display direct-current stabilized power supply (2) are respectively connected with the test piece (3) and the stainless steel ring (4);

the circulating water supply system at least comprises an anticorrosive plastic basin (5), a corrosive solution tank (6), a Y-shaped filter (7), a valve (8), a magnetic drive circulating pump (9), a flowmeter (10), a water pipeline (11), a corrosive solution (12), a PH value tester (13) and a backflow prevention check valve (14);

the circulating heating system at least comprises an anti-corrosion axial flow fan (15), a heater (16) and an air duct (17);

the control system at least comprises a temperature and pH value controller (18) and a programmable controller.

2. The damp-heat and electric-current corrosion coupling effect test simulation device according to claim 1, wherein: the external protection box body (1) is made of an organic glass plate.

3. A use method of a damp-heat and current corrosion coupling effect test simulation device is characterized in that: the method comprises the following steps:

s1, after the test is started, firstly manufacturing a corresponding test piece according to the requirements of the test scheme and maintaining the test piece under the standard condition;

s2, placing the test piece into an anticorrosive plastic basin in an external protection box body, connecting the test piece with the anode of a digital display direct current stabilized voltage power supply, connecting a stainless steel ring with the cathode of the digital display direct current stabilized voltage power supply, and closing the external protection box body after the preparation work is finished;

s3, according to the design PH value or the concentration value of the required ions in the test scheme, preparing corresponding corrosive solution, putting the corrosive solution into a corrosive solution tank of a circulating water supply system, injecting clear water into an anticorrosive plastic basin, opening a valve, operating the circulating water supply system, driving the circulating pump through magnetic force, filtering the corrosive solution through a Y-shaped filter, enabling the corrosive solution to enter the rightmost side of the anticorrosive plastic basin through a water pipeline and a flowmeter, quickly and uniformly diffusing the corrosive solution to the whole basin, enabling the PH value or the concentration of the relevant ions of the anticorrosive plastic basin to reach the design value, and enabling the corrosive solution after being uniformly mixed to flow into the corrosive solution tank through a backflow prevention check valve so as to form water circulation;

s4, opening the circulating heating system, rapidly heating air by the heater, and providing wind power by the anti-corrosion axial flow fan through the air duct to enable the temperature in the external protective box body to reach the test design temperature;

and S5, setting the working times, the intermittent time and the single working time of the circulating water supply system through the control system, adding the corrosive solution required by the next operation of the circulating water supply system into the corrosive solution tank after the setting is finished, finally switching on the power-on corrosion system, and setting the current and the voltage required by the test through the digital display direct current stabilized voltage power supply.

4. The use method of the damp-heat and electric-current corrosion coupling effect test simulation device according to claim 3, is characterized in that: when the test piece is a steel structural member, the member should be ground smooth in step S1.

Technical Field

The invention relates to the technical field of civil engineering, in particular to a damp-heat and current corrosion coupling effect test simulation device and a using method thereof.

Background

In recent years, steel structures and composite structures have been widely used in engineering practice. The acid rain corrosion due to environmental pollution and the seawater corrosion suffered by coastal areas put high demands on the durability of steel structures and composite structures. At present, most of domestic corrosion tests aiming at a steel structure or a steel pipe concrete structure under the condition of power-on corrosion are in a non-automatic mode, and the influence of damp and heat is not considered. Therefore, it is necessary to develop a multifactor automatic simulation test device for the above problems.

Disclosure of Invention

In view of the above defects of the prior art, the technical purpose of the present invention is to solve the problems that at present, domestic corrosion tests for steel structures or steel pipe concrete structures under galvanic corrosion are mostly in an automation-free mode, and the influence of damp and hot is not considered.

In order to achieve the technical purpose, the invention provides a damp-heat and current corrosion coupling effect test simulation device which at least comprises an external protection box body, an electrified corrosion system, a circulating water supply system, a circulating heating system and a control system;

the electrified corrosion system at least comprises a digital display direct-current stabilized power supply and a stainless steel ring, wherein the positive electrode and the negative electrode of the digital display direct-current stabilized power supply are respectively connected with the test piece and the stainless steel ring;

the circulating water supply system at least comprises an anti-corrosion plastic basin, a corrosive solution tank, a Y-shaped filter, a valve, a magnetic drive circulating pump, a flowmeter, a water pipeline, a corrosive solution, a pH value tester and a backflow prevention check valve;

the circulating heating system at least comprises an anti-corrosion axial flow fan, a heater and an air duct;

the control system at least comprises a temperature and PH value controller and a programmable controller.

Preferably, the external protection box body is made of an organic glass plate.

The invention discloses a using method of a damp-heat and current corrosion coupling effect test simulation device, which comprises the following steps:

s1, firstly, manufacturing a corresponding test piece according to the requirements of the test scheme and maintaining the test piece under the standard condition;

s2, placing the test piece into an anticorrosive plastic basin in an external protection box body, connecting the test piece with the anode of a digital display direct current stabilized voltage power supply, connecting a stainless steel ring with the cathode of the digital display direct current stabilized voltage power supply, and closing the external protection box body after the preparation work is finished;

s3, according to the design PH value or the concentration value of the required ions in the test scheme, preparing corresponding corrosive solution, putting the corrosive solution into a corrosive solution tank of a circulating water supply system, injecting clear water into an anticorrosive plastic basin, opening a valve, operating the circulating water supply system, driving the circulating pump through magnetic force, filtering the corrosive solution through a Y-shaped filter, enabling the corrosive solution to enter the rightmost side of the anticorrosive plastic basin through a water pipeline and a flowmeter, quickly and uniformly diffusing the corrosive solution to the whole basin, enabling the PH value or the concentration of the relevant ions of the anticorrosive plastic basin to reach the design value, and enabling the corrosive solution after being uniformly mixed to flow into the corrosive solution tank through a backflow prevention check valve so as to form water circulation;

s4, opening the circulating heating system, rapidly heating air by the heater, and providing wind power by the anti-corrosion axial flow fan through the air duct to enable the temperature in the external protective box body to reach the test design temperature;

and S5, setting the working times, the intermittent time and the single working time of the circulating water supply system through the control system, adding the corrosive solution required by the next operation of the circulating water supply system into the corrosive solution tank after the setting is finished, finally switching on the power-on corrosion system, and setting the current and the voltage required by the test through the digital display direct current stabilized voltage power supply.

Preferably, in step S1, when the test piece is a steel structural member, the member should be ground smooth.

The invention has the beneficial effects that:

due to the structural design and the method, through the use of the external protection box body, the electric shock risk of testers can be reduced, and meanwhile, the contact between volatile corrosive liquid and the testers can be reduced; the circulating water supply system can control the pH value in the electrified pond and the stability of the concentration of related ions by adjusting the flow of the corrosive solution; the circulating heating system can keep the air in the external protective box body at a constant temperature; the control system can automatically control air heating and corrosive solution adding, and can record the current and voltage change values of the component. Thereby greatly reducing the labor intensity and being suitable for multi-factor long-time simulation environmental tests in the laboratory environment.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a schematic diagram of the structure of the galvanic corrosion system of the present invention;

FIG. 3 is a schematic view showing the construction of the circulating water supply system according to the present invention;

fig. 4 is a schematic structural view of the circulation heating system of the present invention.

In the figure: the device comprises an external protection box body 1, a digital display direct-current stabilized power supply 2, a test piece 3, a stainless steel ring 4, an anticorrosive plastic basin 5, a corrosive solution tank 6, a Y-shaped filter 7, a valve 8, a magnetic drive circulating pump 9, a flowmeter 10, a water pipeline 11, a corrosive solution 12, a pH value tester 13, a backflow prevention check valve 14, an anticorrosive axial flow fan 15, a heater 16, an air duct 17, a temperature display instrument 18 and a pH value display instrument 19, a support 19 and a cushion block 20.

Detailed Description

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.