Testing device and testing method of high temperature molten salt swivel joints

Abstract

The invention discloses a testing device of a high temperature molten salt swivel joints. The testing device comprises a molten salt tank; a driving tower; a heat collection tube, which is driven to swing in a reciprocating way by the driving tower; and swivel joints, which are connected with the two ends of the heat collection tube by metal flexible tubes. The swivel joints are connected with the molten salt tank by pipelines to form circulating loops, and the pipeline is provided with a heat tracing band. The heat collection tube and the metal flexible tubes are provided with Joule heating mechanisms. The metal flexible tubes are insulated from the swivel joints, and one side of each of the swivel joints is provided with a temperature sensor. The swivel joints are driven to rotate to realize simulation of motion angles of working condition angles. The actually-used driving tower is used to drive the swivel joints to rotate, which is completely in accordance with an on-site working condition, and the rotation angle is completely the same, and by accelerating the rotation speed, a rotation period is shortened. The driving tower is moved to drive the metal flexible tubes to swing, and the telescoping of the on-site heat collection tube is simulated, and therefore the experiment length of the heat collection tube is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of product testing, in particular to a testing device for a high-temperature molten salt rotary joint. Background technique [0002] The technical requirements of the trough molten salt thermal power generation project with molten salt heat storage facilities are that the pipe connectors have the characteristics of high temperature resistance of 570°C, 25-year service life, and low cost. The rotary joint is one of the key pipe fittings. At present, the procurement of this high-temperature molten salt rotary joint is all dependent on imports, and the cycle is long. For such a huge demand for a 50MW heat collector, the cost is very high Therefore, it is urgent to develop a test device to simulate the actual working conditions on site to test the performance of the rotary joint. At present, our company is designing and developing the rotary joint. This test device can also further test the performance of the s...

AI Technical Summary

Problems solved by technology

The rotary joint is one of the key pipe fittings. At present, the procurement of this high-temperature molten salt rotary joint is all dependent on imports, and the cycle is long. For such a huge demand for a 50MW heat collector, the cost is very high Therefore, it is urgent to develop a set of test equipment to simulate the actual working conditions on site to test the performance of the rotary joint.

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