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Pipeline connecting structure

A connection structure and pipeline technology, applied in the direction of valve housing structure, sealing surface connection, pipe/pipe joint/pipe fitting, etc., can solve problems such as electric corrosion, potential difference at copper-aluminum connection, etc.

Pending Publication Date: 2021-08-31
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The base material of the valve body and nut in this structure is usually brass. When low-cost aluminum connecting pipes are used, there is a potential difference at the copper-aluminum connection. Corrosion

Method used

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Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] Without loss of generality, this article takes the application of the pipeline connection structure in the connection between the shut-off valve and the pipeline as an example, and other similar applications are similar to this, and will not be described in detail.

[0037] Please refer to figure 1 with figure 2 , figure 1 A schematic cross-sectional view of a specific embodiment of the connection structure between the shut-off valve and the pipeline provided by the present invention; figure 2 for figure 1 Partial enlarged view of part A in the middle.

[0038] The stop valve includes a valve body 110, a valve stem 120 and a bonnet 130; wherein, the side of the valve body 110 forms a valve body connecting portion 112 wi...

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PUM

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Abstract

The invention discloses a pipeline connecting structure. The structure comprises a valve body pipe connecting part, a connecting pipe and a nut. The connecting pipe is made of aluminum materials, a spacing sleeve, a sealing ring, a gasket and a lining are further included, the sealing ring, the gasket and the lining are located in an inner cavity of the nut, the sealing ring and the gasket are fixedly connected or are of an integrated structure, the lining is arranged on the periphery of the sealing ring in a sleeving manner, and the nut and the lining are made of copper materials. A flaring section is formed at the end of the connecting pipe, the connecting pipe is sleeved with the spacing sleeve, the spacing sleeve is sleeved with the nut and the lining, a first conical surface matching pair is arranged between the flaring section and the spacing sleeve, and a second conical surface matching pair is arranged between the spacing sleeve and the lining. One end of the sealing ring abuts against the valve body pipe connecting part to form a first sealing structure, and the other end abuts against the flaring section to form a second sealing structure. According to the connecting structure, the design requirement for the conicity of a related conical surface is lowered, the sealing effect can be ensured by applying smaller tightening torque, operation is convenient, meanwhile, an aluminum connecting pipe can be adopted, and cost is lower.

Description

technical field [0001] The invention relates to the technical field of refrigeration control, in particular to a pipeline connection structure. Background technique [0002] The globe valve includes a valve body and a valve stem. There is a first interface on the side of the valve body, and a second interface on the bottom. The two are connected through the valve port. The valve stem is set in the inner cavity of the valve body. Connected by threaded pair. When the valve stem is turned, under the action of the thread pair, the valve stem can move up and down along the inner cavity of the valve body to close or open the valve port, so as to block or connect the passage between the first port and the second port. [0003] The active connection structure of the stop valve and the pipeline usually includes the connection end of the stop valve body, the connecting pipe and the nut; the end surface of the connection end of the valve body forms an outer tapered surface, and the en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L19/07F16L58/18F16K27/02
CPCF16K27/02F16L19/061F16L19/07F16L58/184
Inventor 不公告发明人
Owner ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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