一种海水抽蓄多运行工况材料腐蚀性能评价装置
By designing a corrosion performance evaluation device for materials under multiple operating conditions in seawater pumped storage, integrating temperature and flow rate control systems, and simulating the complex operating conditions of seawater pumped storage power station pipelines, the device solves the problem that existing devices cannot comprehensively evaluate the corrosion resistance performance of anti-corrosion coatings, and achieves efficient evaluation of coatings and extension of equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGFANG ELECTRIC(FUJIAN)INNOVATION INST CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-17
AI Technical Summary
Existing coating performance evaluation simulation devices cannot effectively simulate complex working conditions such as high seawater flow velocity and variable seawater flow direction in seawater pumping and storage pipeline systems, making it difficult to comprehensively evaluate the corrosion resistance performance of anti-corrosion coatings.
A corrosion performance evaluation device for materials under multiple operating conditions of seawater pumped storage was designed. It integrates a closed-loop temperature control and a bidirectional flow rate control system. Combined with a simulated seawater pool, circulating pump, flow regulating valve, etc., it simulates the high pressure, bidirectional water flow switching and temperature fluctuation of the pipeline of the seawater pumped storage power station. The oxygen content and pH value are regulated through the oxygenation interface. Combined with the sediment addition port and microbial culture tank, it accurately simulates seawater corrosion and biofouling.
It enables performance evaluation of anti-corrosion coatings under complex working conditions, dynamically reproduces multiple failure mechanisms of seawater pumped storage power station pipelines, provides assessment of near-service conditions, and extends equipment service life.
Smart Images
Figure CN224518475U_ABST
Abstract
Claims
1. A device for evaluating the corrosion performance of materials under multiple operating conditions in seawater pumped storage, characterized in that: Corrosion test chamber (14): includes test chamber cylinder (1) and retractable inner part (2), the retractable inner part (2) is provided with sample holder (3), and the inner wall of the test chamber cylinder (1) is coated with a highly corrosion-resistant and anti-fouling coating; Temperature control system: includes heater (4), temperature sensor and temperature controller (6), used for closed-loop regulation of seawater temperature to set value. The heater (4) is set on the side wall of simulated seawater pool (15) to provide heat to seawater. The temperature controller (6) is set above the simulated seawater pool and a temperature sensor is provided at the bottom of the temperature controller to monitor seawater temperature. The flow rate control system includes a simulated seawater tank (15), a circulating pump (16), a pumping pipe (7), a supply pipe (8), a flow meter (17), and a flow regulating valve (9). The simulated seawater tank (15) is equipped with an oxygenation port (10), a pH meter (18), and a temperature controller (6). The circulating pump (16) is connected to the outlet of the simulated seawater tank (15) through the pumping pipe (7) and to the inlet of the corrosion test chamber (14) through the supply pipe (8). The flow meter (17) and the flow regulating valve (9) are connected in series in the supply pipe (8) to form a flow rate feedback regulation loop.
2. The device for evaluating the corrosion performance of a seawater pumping and storage multi-operation mode material according to claim 1, characterized in that: The retractable inner part (2) moves axially along the test chamber cylinder (1), and the sample holder (3) is made of corrosion-resistant metal or polymer material and is used to fix the pipe material and coating sample to be tested at multiple angles.
3. The device for evaluating the corrosion performance of a seawater pumping and storage multi-operation mode material according to claim 1, characterized in that: The temperature control system monitors the seawater temperature in real time through a temperature sensor. The temperature controller (6) starts and stops the heater (4) according to the deviation signal between the set value and the measured value, and dynamically adjusts the heating power to maintain a constant temperature.
4. The device for evaluating the corrosion performance of a seawater pumping and storage multi-operation mode material according to claim 1, characterized in that: The simulated seawater pool (15) is equipped with a sediment addition port (11), a microbial culture tank (12), and an inorganic salt injection device (13) for precisely controlling the sediment content, microbial concentration, and inorganic salt composition of the simulated seawater.
5. The device for evaluating the corrosion performance of a seawater pumping and storage multi-operation mode material according to claim 1, characterized in that: The flow regulating valve (9) is a two-way electric control valve. By adjusting the opening degree, it controls the direction and speed of seawater flow, simulating the two-way water flow impact generated by switching between pumping or power generation conditions.
6. The device for evaluating the corrosion performance of a seawater pumping and storage multi-operation mode material according to claim 1, characterized in that: The oxygenation interface (10) is connected to the oxygen supply device (21), and a pH meter (18) is provided on the side wall of the simulated seawater pool (15) for real-time adjustment of the seawater pH value.
7. The device for evaluating the corrosion performance of a seawater pumping and storage multi-operation mode material according to claim 1, characterized in that: The corrosion test chamber (14) is connected to the microbial culture tank (12) in the simulated seawater pool (15) and is equipped with a filter (19) for recycling.
8. The device for evaluating the corrosion performance of a seawater pumping and storage multi-operation mode material according to claim 1, characterized in that: A pressure gauge (20) is installed on the water supply pipe (8) between the corrosion test chamber (14) and the circulation pump (16) to monitor the pressure in the pipe; a thermometer (5) is installed on the outer wall of the corrosion test chamber (14).