Quality appraisal of marine wind measurement equipment

ocean wind measurement equipment is the core equipment for offshore wind power development, weather forecasting, and marine environment monitoring. It is used to obtain key parameters such as sea surface wind speed, wind direction, and air pressure in real time. Its application coverage:

1) Offshore wind power: Provide data support for wind farm site selection and wind turbine design, reducing power generation costs and safety risks.

2) Weather warning: Monitor extreme weather such as typhoons and storm surges to improve disaster prevention and reduction capabilities.

3) Marine scientific research: assisting ocean current analysis and climate change research.

Compared with traditional land-based wind measurement equipment, ocean wind measurement equipment needs to be resistant to salt spray corrosion, typhoon impact resistance, and long-term stable operation. Driven by the “double carbon” goal, its technical level directly affects the efficiency of offshore renewable energy development and the safety of the marine environment, and is an important technical guarantee for the strategy of maritime power.

0 Zhongke Testing is a product quality appraisal service organization registered with the court. It can provide quality appraisal services for marine wind measurement equipment. It has a professional appraisal team and advanced instruments and equipment to provide fair and accurate appraisal results for the quality appraisal of marine wind measurement equipment.

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As the development of marine resources accelerates, disputes over the quality of wind measurement equipment occur frequently. The judicial dispute focuses on:

1 and whether the equipment meets the wind speed measurement accuracy agreed in the contract (such as ±0.5m/s), wind direction resolution (≤3°) and other indicators;

2, whether there is data deviation or equipment failure due to material aging and sensor failure;

3, whether the data transmission stability and fault response mechanism meet the requirements;

4, the correlation between quality problems, maritime accidents and economic losses.

0In such cases, the quality appraisal of marine wind measurement equipment uses technical means such as on-site calibration and environmental simulation tests to provide a scientific basis for the court to determine liability and loss compensation, and promote the standardized development of the marine equipment manufacturing industry.

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Quality appraisal technical methods for marine wind measurement equipment include:

1, appearance and structural inspection

Verify whether the equipment shell material (such as aluminum alloy, carbon fiber composite material) meets the corrosion resistance requirements, and whether there is coating peeling or rust on the surface. Check whether the installation angle of the sensor (anemometer, wind vane) is accurate and whether the lightning protection grounding system is effective.

2 and performance parameter test

use laser wind measurement radar to perform on-site calibration of the equipment to verify wind speed and wind direction measurement errors. Simulate typhoon conditions (wind speed ≥30m/s) to test the equipment's impact resistance and data continuity.

03, material composition analysis

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2 determines the material of key components (such as bearings, gears) through spectral analysis, and detects the corrosion resistance in salt spray environments. Evaluate the aging resistance of seals (O-rings, rubber gaskets) and test the waterproof level (IPX8/IPX9).

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44, material composition analysis

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6Determine the impeller material composition (such as aluminum alloy grade) through spectral analysis, and detect the mechanical properties (such as tensile strength, hardness). Evaluate whether the materials of bearings and seals meet high temperature resistance and wear resistance requirements.

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85, environmental adaptability assessment

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0 conducted salt spray test (5% NaCl solution, 96 hours) and heat and humidity cycle (-40℃~85℃) to evaluate the durability of the equipment. Test the ability to resist electromagnetic interference and verify signal stability in complex electromagnetic environments.

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26, control system function test

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4 simulates sensor failure, data interruption and other scenarios, and tests the automatic switching and alarm functions of the equipment. Check the real-time performance and reliability of remote monitoring systems (such as GPRS/Beidou communication).

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The applicant, an offshore wind power company, signed an "Ocean Wind Measurement Tower Procurement Contract" with an equipment manufacturer of the respondent, agreeing to purchase 10 sets of wind measurement equipment model WHJ-200. Three months after the equipment was put into operation, data abnormalities (sudden drops in wind speed and jumps in wind direction) occurred on multiple pieces of equipment, resulting in a deviation of more than 20% in the estimated power generation of the wind farm. The wind power company believed that the equipment had design defects and demanded compensation for losses. The equipment manufacturer argued that the problem was caused by the complex marine environment or improper installation, and both parties went to court. The court entrusted a third-party appraisal agency to conduct quality appraisal of the equipment involved in the case.

Identification and analysis results:

The quality analysis expert group discussed and comprehensively analyzed the relevant information, contract technical agreements, on-site survey case materials and other data of "Ocean Wind Measuring Equipment" and made the following quality analysis opinions:

1. There are salt spray corrosion pits on the surface of the anemometer impeller of the oceanic wind measuring equipment involved, and the bearing clearance is too large. After analyzing the composition of the impeller material, it was found that the impeller material is ordinary aluminum alloy, which has not been anodized and has insufficient corrosion resistance. The bearings are made of carbon steel (stainless steel should be used), and the corrosion rate after the salt spray test is 30%.

2, the wind vane damper of the marine wind measuring equipment involved in the case has insufficient structural strength and poor vibration resistance, resulting in the damper spring breaking and the wind direction signal being unstable.

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The quality appraisal report of marine wind measurement equipment should include the following content:

1. The purpose and basis of the appraisal.

2. Model, specification, manufacturer and other information of the equipment being identified.

3. Identification method.

4. Identification results (including whether there are quality problems, causes of problems, etc.).

05. Identification conclusion.

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26. Signature and seal of the appraiser, official seal of the appraisal agency

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