A pipeline flexible connection device and its use method

Abstract

Provided is a flexible pipe connecting device, which is formed of at least one group of flexible pipe connecting device units. Each group of device units is formed of two or more metal bellow pipes sleeved over each other and connecting members at two ends. At least one enclosed space is formed between the metal bellow pipes sleeved over each other. At least one temperature sensor is arranged on the wall of a metal bellow layer or an enhancement layer of the flexible pipe connecting device. During the operation, the temperature is monitored, and by analyzing the temperature change information, the leakage alarm for the flexible pipe connecting device is implemented. The device is capable of safe operation and has low cost, a long service life, high strength, low thermal loss, desirable flexible controllability and monitoring controllability.

Description

technical field [0001] The invention relates to a pipeline flexible connection device, in particular to a pipeline flexible connection device in the field of solar heat utilization. Background technique [0002] Hose is an important connecting component in engineering technology, which is composed of flexible pipes and joints. Used as compensating elements, sealing elements, connecting elements and shock absorbing elements in various gas transmission, infusion pipeline systems and length, temperature, position and angle compensation systems, used in aerospace, petrochemical, mining electronics, machinery shipbuilding, medical treatment Health, textile electronics, energy construction and other fields. [0003] At present, in the existing commercialized trough collector system, two parallel collector terminals need to be connected in series through flexible pipelines to complete a heat collecting working medium or the output terminal of a single heat collector transports th...

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Problems solved by technology

[0003] At present, in the existing commercialized trough collector system, two parallel collector terminals need to be connected in series through flexible pipelines to complete a heat collecting working medium or the output terminal of a single heat collector transports the heated working medium into the branch pipe. Due to the particularity of the trough tracking, the heat collector changes with the position of the sun, but the relative position of the branch pipe is fixed. Therefore, the two need to be connected to each other through a flexible pipeline connection device. The existing flexible connection is designed as a three-dimensional connection spherical movable joint or a bellows structure. The former has a complex structure, is inconvenient to produce and install, and is expensive. The possibility of leakage cannot be avoided; the latter is connected by bellows. Although the structure is simple and easy to install, it has the possibility of sudden leakage. rupture, a sudden large-scale leakage occurs, which seriously affects the safety of operation; at the same time, it is difficult for the two to achieve good heat preservation during the work process, and it is impossible to control the heat loss of the system well

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