|
|
|
| Design of high-temperature and high-pressure RCP test bench |
| CAI Long1,2 ,CHEN An3*, XU Jian1, XUE Linhui1, LONG Yun4 |
| 1. Harbin Electric Power Equipment Company limited, Harbin, Heilongjiang 150060, China; 2. School of Materials Science and Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China; 3. Chengdu Sichuan Kexin Mechanical and Electrical Equipment Co. Ltd., Deyang, Sichuan 618400, China; 4. National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
|
|
|
|
Abstract To insure the safety and functionality of each reactor coolant pump(RCP)before it leaves the factory, and verify its performance, the high-temperature and high-pressure RCP test bench was designed and studied, the composition, function and the safety design of the test bench were introduced as well. The finite element model of the structure was established to analyze the natural vibration characteristics. It was found that the natural frequency around rotation frequency of 50 Hz is far away from the support of the test pump, which will not affect the operation of the test pump. Some reinforcement measures were obtained by analyzing the influence of flow-induced vibration on the test bench and the RCPs. Meanwhile, the design of the test bench also considers the thermal stress and displacement from the cold state to the hot state. These methods ensure that the RCP runs stably on the test bench, and ensures the safety of the test bench under the cold and heat alternating and transient operating conditions of the loop system. According to the measurement, after the completion of the construction, the circuit of the test bench driven by thermal stress, and the corresponding displacement occurs in the expected direction. The displacement is basically consistent with the theoretical calculation. Several main failure modes and preventive measures such as brittle fracture failure, ductile fracture failure, joint leakage failure, elastic or plastic instability, and uniform corrosion failure of the test bench were introduced. The verification test for the RCP of the small reactor was completed by this test bench. The design technology and implementation content adopted can guide the design and construction technology of high-temperature test benches, which has greater engineering and academic reference significance.
|
|
Received: 13 July 2021
|
|
|
|
|
|
|
