CN209892952U

CN209892952U - Low-temperature liquid vacuum pipeline flange joint leakage protection device

Info

Publication number: CN209892952U
Application number: CN201920504950.6U
Authority: CN
Inventors: 李明晖; 邵新中; 刘景松
Original assignee: Xinjiang Bayi Iron and Steel Co Ltd
Current assignee: Xinjiang Bayi Iron and Steel Co Ltd
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2020-01-03
Anticipated expiration: 2029-04-15

Abstract

The utility model discloses a cryogenic liquids vacuum pipe flange connection department weeping protection device, vacuum pipe flange department at cryogenic liquids vacuum pipe connection is setting up the weeping protection device that comprises the metal antifreeze material, make the whole cladding of vacuum pipe flange, its structure is for following the last of cryogenic liquids vacuum pipe axis horizontal subdivision setting, lower seal cavity, its plane fitting surface is setting up flange, between flange and last, the fitting surface punishment of the locular wall of lower seal cavity and pipeline is setting up sealed the pad respectively, and it is sealed to fasten through bolted connection, at last, set up the last blast pipe and lower blast pipe down on the lower seal cavity respectively. The utility model discloses rational in infrastructure, carry out water conservancy diversion and natural gasification with the cryogenic liquids that cryogenic liquids vacuum tube flange leaked, prevent that cryogenic liquids from splashing component positions such as pipeline, support, truss of near all kinds of carbon steel material, stop accident such as frost crack emergence such as pipeline, support to avoid the secondary emergence of deriving the accident.

Description

Low-temperature liquid vacuum pipeline flange joint leakage protection device

Technical Field

The utility model belongs to cryogenic liquids vacuum pipe flange joint weeping protection device, especially a cryogenic liquids vacuum pipe flange joint weeping protection device.

Background

The low-temperature liquid vacuum tube consists of an inner tube, an outer tube and a plurality of layers of heat insulating materials, and the heat insulating materials in the interlayer are compounded to reduce radiation heat transfer; the interlayer is pumped into a high vacuum state to reduce the convection heat transfer; the inner pipe and the outer pipe are isolated by a material with low heat conductivity coefficient to reduce solid heat transfer, so that the cold loss of the inner pipe is controlled to the minimum, and long-distance transmission of low-temperature liquid (LO, LN, LAr, LH2, LHe and LNG) is fully met. In order to reduce the installation time, most low-temperature liquid vacuum pipes are manufactured in sections, the pipe sections are connected through flanges, if sealing in the flange connection fails, low-temperature liquid can flow out or splash from the flanges, and frost cracking accidents of components such as pipelines, supports, trusses and the like made of various nearby carbon steel materials are caused, so that a large amount of media in the pipelines are leaked or the structures collapse, and further secondary derivation accidents are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cryogenic liquids vacuum pipe flange joint weeping protection device, its is rational in infrastructure, can carry out water conservancy diversion and natural gasification with the cryogenic liquids that cryogenic liquids vacuum tube flange leaked, prevents that cryogenic liquids from splashing component positions such as pipeline, support, the truss of near all kinds of carbon steel material, can stop accident such as frost crack such as pipeline, support to avoid the secondary emergence of deriving the accident.

The purpose of the utility model is realized like this: the utility model provides a cryogenic liquids vacuum pipe flange junction weeping protection device, it is connected through the vacuum pipeline flange to include cryogenic liquids vacuum pipe, vacuum pipe flange department of cryogenic liquids vacuum pipe connection is setting up the weeping protection device that comprises the anti-freezing material of metal, make the whole cladding of vacuum pipe flange, its structure is for along the upper and lower sealed cavity that cryogenic liquids vacuum pipe axis horizontal subdivision set up, its plane fitting surface is setting up flange, between flange and upper, the fitting surface punishment of the chamber wall of lower sealed cavity and pipeline is respectively setting up sealed the pad, and through bolted connection fastening sealing, upper and lower sealed cavity is respectively setting up exhaust pipe and exhaust pipe down.

The utility model discloses utilize the metal material that prevents frostbite with the whole cladding of vacuum pipe flange to exhaust pipe and lower drain pipe are carried out water conservancy diversion and natural gasification in the cryogenic liquid that sets up low temperature liquid vacuum pipe flange and leak, prevent that cryogenic liquid from splashing component positions such as pipeline, support, truss of near all kinds of carbon steel material, can effectively stop accident such as freezing and splitting of pipeline, support, thereby avoid the secondary emergence of deriving the accident.

The utility model is a horizontal split structure, which comprises an upper part and a lower part. Firstly, a gasket is arranged on a vacuum pipeline, then a flange leakage protection device (lower part) is arranged at the lower part of a vacuum pipe, finally the flange leakage protection device (upper part) is arranged at the upper part of the vacuum pipe, and the upper and lower flanges are connected and fastened by bolts, so that the device is fixed on the vacuum pipeline. When the vacuum pipe leaks, the low-temperature liquid flows out along the lower liquid discharge pipeline, and the gasified gas is discharged along the upper gas discharge pipeline.

The utility model discloses rational in infrastructure, realized carrying out water conservancy diversion and natural gasification with the cryogenic liquids that cryogenic liquids vacuum tube flange leaked, prevented that cryogenic liquids from splashing component positions such as pipeline, support, the truss of near all kinds of carbon steel material, stopped accidents such as freezing cracks such as pipeline, support, avoided the emergence of secondary derived accident.

Drawings

The present invention will be further described with reference to the accompanying drawings, wherein fig. 1 is a schematic view of the main structure of the present invention, fig. 2 is a schematic view of the left structure of fig. 1, and fig. 3 is a schematic view of the top structure of fig. 1.

Detailed Description

A low-temperature liquid vacuum pipeline flange joint liquid leakage protection device is disclosed, as shown in figures 1, 2 and 3, and comprises a low-temperature liquid vacuum pipeline 1 connected through a vacuum pipeline flange 2, a liquid leakage protection device made of metal anti-freezing materials is arranged at the vacuum pipeline flange 2 connected with the low-temperature liquid vacuum pipeline 1, so that the vacuum pipeline flange is completely coated, the structure of the device is that an upper sealing chamber 3 and a lower sealing chamber 4 are horizontally arranged along the axis of the low-temperature liquid vacuum pipeline in a splitting mode, a connecting flange 5 is arranged on a plane matching surface of the upper sealing chamber 3 and the lower sealing chamber 4, sealing gaskets are respectively arranged between the connecting flanges 5 and on the matching surfaces of the upper sealing chamber wall and the lower sealing chamber 3 and the lower sealing chamber 4 and the pipeline, the sealing gaskets are connected and fastened and sealed through bolts, and an upper exhaust pipe 6 and a lower exhaust pipe.

Claims

1. The utility model provides a cryogenic liquids vacuum pipe flange joint weeping protection device, includes that cryogenic liquids vacuum pipe (1) is connected characterized by through vacuum pipe flange (2): the vacuum pipeline flange (2) connected with the low-temperature liquid vacuum pipeline (1) is provided with a liquid leakage protection device made of metal anti-freezing materials, the vacuum pipeline flange is completely coated, the structure of the vacuum pipeline flange is an upper sealing chamber (3) and a lower sealing chamber (4) which are horizontally arranged along the axis of the low-temperature liquid vacuum pipeline in a splitting mode, the plane matching surface of the vacuum pipeline flange is provided with a connecting flange (5), sealing gaskets are respectively arranged between the connecting flanges (5) and the matching surfaces of the chamber walls of the upper sealing chamber (3) and the lower sealing chamber (4) and the pipeline, the sealing gaskets are fastened and sealed through bolts, and the upper sealing chamber (3) and the lower sealing chamber (4) are respectively provided with an upper exhaust pipe (6) and a.