Connection structure of vacuum pipeline

A vacuum pipeline and connection structure technology, which is applied to pipeline systems, pipes/pipe joints/fittings, expansion compensation devices for pipelines, etc., can solve the problems of vacuum pipeline structure leakage, poor bearing capacity, poor sealing performance, etc., to achieve Avoid leakage, facilitate maintenance and handling, and improve the effect of safety factor

CN108167567AInactive Publication Date: 2018-06-15张跃
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-06-15
Estimated Expiration
Not applicable · inactive patent

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Patent Text Reader

Abstract

The invention provides a connection structure of a vacuum pipeline. The vacuum pipeline is formed through connection of a plurality of single-sectional pipeline bodies, and swelling joints are arranged on the single-sectional pipeline bodies; and every two adjacent single-sectional pipeline bodies are connected through the swelling joints. The swelling joints can adapt to the volumetric change ofthermal expansion and cold contraction of the single-sectional pipeline bodies, and the sealing performance and the stability of connection among the pipeline bodies are ensured.
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Description

technical field

[0001] The invention relates to the technical field of vacuum pipeline connection, in particular to a vacuum pipeline connection structure. Background technique

[0002] The inside of the vacuum pipe is in a vacuum environment. In the actual production process, the vacuum pipe is spliced ​​by multi-section pipes and connected through the connection structure between the pipes. When the vacuum pipe is made of metal materials, due to changes in ambient temperature and climate, Pipelines expand with heat and contract with cold for volume changes, and the connection structure at the junction of adjacent pipes needs to adapt to the changes in the pipes to ensure that the connection is tight and does not leak.

[0003] Most of the existing connection structures are single-layer structures, which mainly have the following defects: (1) Poor sealing performance, which connects two adjacent vacuum pipes, so that all pipes are connected, and once a certain part of the p...

Examples

Embodiment 1

[0045] Such as Figure 1~2 Shown is a connection structure of vacuum pipelines, the vacuum pipelines are formed by connecting multiple single-section pipelines 1, in order to prevent thermal expansion and contraction of the vacuum pipelines, every two adjacent pipelines are connected by expansion joints.

[0046]The single-section pipeline 1 is a sandwich structure, including an upper panel 1-2 and a lower panel 1-1, and a sandwich layer is arranged between the panels, and the sandwich layer includes a plurality of corrugated boards arranged at intervals between the two panels. The board is vertically arranged between the two panels, and the corrugated board has a certain thickness, which can increase the connection area with the panels. The corrugated board is soldered to the two panels. Both the upper panel 1-2 and the lower panel 1-1 are made of stainless steel, and the brazing filler metal is copper brazing filler metal.

[0047] The expansion joint is an inner and outer...

Embodiment 2

[0050] Such as Figure 3-4 As shown, the difference from Example 1 is that on the basis of Example 1, the two adjacent single-section pipelines 1 connected to the expansion joint are also connected by a pipeline with a valve group 3, and the pipeline with a valve group 3 is connected There is a section of shrinkable pipeline 3-2 to change with the thermal expansion and cold contraction of the vacuum pipeline.

[0051] There is an electric valve 3-1 on the pipeline 3 with valve group, and the connection or disconnection between the two single-section pipelines 1 is realized through the closing or disconnection of the electric valve 3-1; one side of the electric valve 3-1 is provided with Vacuuming device, an electric vacuum valve 3-3 is arranged at the connection between the vacuuming device and the pipeline 3 with valve group. By opening the electric valve 3-1 and the electric vacuum valve 3-3, the interlayer of two adjacent single-section pipelines 1 can be vacuumed simultan...

Embodiment 3

[0053] Such as Figure 5 As shown, the difference from Embodiment 2 is that the first electric valve 3-43-1 is provided on the side of the valve group pipeline 3 close to one single-section pipeline 1, and the first electric valve 3-43-1 is provided on the side close to the other single-section pipeline 1. Two electric valves 3-53-1, a vacuuming device is arranged between the first electric valve 3-43-1 and the second electric valve 3-53-1, and an electric vacuum is installed at the connection between the vacuuming device and the pipe with valve group 3 Valve 3-3, by opening the first electric valve 3-43-1, the second electric valve 3-53-1 and the electric vacuum valve 3-3, the interlayer of two adjacent pipelines can be vacuumed at the same time; or by selectively opening the first electric valve An electric valve 3-43-1 or a second electric valve 3-53-1 simultaneously open the electric vacuum valve 3-3 to vacuumize the interlayer of a certain single-section pipeline 1.