Redundant seal on-line detection of pipeline joints

Abstract

The invention relates to a redundant seal on-line detecting pipeline connector used for a filling system with higher sealing requirements, is especially suitable for confined spaces and narrow spaces, and aims to provide the redundant seal on-line detecting pipeline connector which has a simple structure, is reliably sealed, and can carry out on-line detection on the sealing effect of the redundant seal on-line detecting pipeline connector at the same time. The redundant seal on-line detecting pipeline connector comprises a seal receptacle, a seal cone, end surface sealing pieces, radial sealing pieces, fastening pieces and detecting connectors, wherein the seal receptacle is fixedly connected with the seal cone through the fastening pieces; the rear end of the seal receptacle is matched with the front end of the seal cone; the end surface sealing pieces and the radial sealing pieces are respectively arranged in the end surface direction and the radial direction of the matched surfaces of the seal receptacle and the seal cone; a seal cavity is formed among the end surface sealing pieces, the radial sealing pieces as well as the matched surfaces of the seal receptacle and the seal cone; the detecting connectors are fixedly connected with the rear end of the seal receptacle and communicated with the seal cavity. Through the adoption of the redundant seal on-line detecting pipeline connector, the seal failure problem of the end surface sealing pieces under the cold shrink condition can be prevented effectively.

Description

technical field [0001] The invention relates to a pipeline sealing structure, in particular to a redundant sealing on-line detection pipeline joint used in a filling system with high sealing requirements. Background technique [0002] Some low-temperature filling systems such as automobile gas filling stations and some normal-temperature flammable, explosive or toxic gas filling systems have relatively high requirements for the sealing of the pipeline interface. In some low-temperature filling systems, the low-temperature medium is due to Its boiling point temperature is low, so that the metal materials and non-metallic materials it contacts are prone to large cold shrinkage. In the case of low-temperature cold shrinkage of pipeline materials, the sealing effect of the existing pipeline sealing structure is greatly reduced or even Can lead to sealing failure; In addition, in the prior art, when leaking occurs at the sealing structure in the sealing system, the existing seali...

AI Technical Summary

Problems solved by technology

[0002] Some low-temperature filling systems such as automobile gas filling stations and some normal-temperature flammable, explosive or toxic gas filling systems have relatively high requirements for the sealing of the pipeline interface. In some low-temperature filling systems, the low-temperature medium is due to Its boiling point temperature is low, so that the metal materials and non-metallic materials it contacts are prone to large cold shrinkage. In the case of low-temperature cold shrinkage of pipeline materials, the sealing effect of the existing pipeline sealing structure is greatly reduced or even Can lead to sealing failure; In addition, in the prior art, when leaking occurs at the sealing structure in the sealing system, the existing sealing leak detection device is used to detect it is not convenient and fast enough, and the detection device and detection device in the prior art The program is also relatively complicated, and it is impossible to carry out online detection of seal leakage

In addition, it is impossible or inconvenient for personnel to perform redundant sealing online detection of pipeline joint seal leak detection in confined spaces and narrow spaces

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