Low-temperature valve internal cooling circulation experiment system

The invention discloses a low-temperature valve internal cooling circulation experiment system. The system comprises a liquid storage tank used for dynamic storage of a low-temperature medium, a low-temperature storage tank, a low-temperature storage tank connected with the liquid storage tank and used for liquid storage, a low-temperature valve to be tested, a valve clamping platform used for fixing the low-temperature valve, and a low-temperature pump circulation subsystem. The low-temperature pump circulation subsystem is connected with the liquid storage tank and the low-temperature valve to achieve that the low-temperature medium passes through the internal portion of the low-temperature valve and performs circulation cooling. The low-temperature valve internal cooling circulation experiment system is the first low-temperature valve internal cooling circulation test system in China, fundamentally solves the problem that the sealing pair fails due to the temperature gradient opposite to the actual working