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Adapter for measuring a physical variable

An adapter, variable technology for measuring heat, measuring instrument components, measuring devices, etc., that solves problems such as time and cost, down tube or flange plate distortion, lack of fusion, etc.

Inactive Publication Date: 2016-02-03
WIKA ALEXANDER WIEGAND SEANDCO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting high temperatures can cause distortion of the downtube or flange plate
Additionally, there may be a lack of fusion, which requires time-consuming reworking of the weldment
Also, when using certain materials, an additional heat treatment in an oven is required, which is very time and cost intensive

Method used

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  • Adapter for measuring a physical variable
  • Adapter for measuring a physical variable
  • Adapter for measuring a physical variable

Examples

Experimental program
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Effect test

Embodiment Construction

[0046] figure 1 The prior art is shown in the form of a normal welded adapter 1, consisting of a downtube 2 and a flange plate 3, where the downtube is joined to the flange plate and is welded to the flange plate typically in several passes in the circumferential direction. 3 welded together.

[0047] Then, the finished adapter is fitted into the connection opening 5 . The finished adapter comprises, for example, a flange plate 5A, which is sealingly connected to the system part 15 through an extension tube 5B, usually by means of a weld-on sleeve 5C.

[0048] Due to the complicated welding, such adapters, so-called "full penetration parts" or "full penetration welding protection tubes" have in fact been tested on the market, but are expensive to manufacture due to the long welding times. Furthermore, such structures are often misaligned with respect to each other, making rotation difficult or impossible.

[0049] After being assembled to the connection opening 5 by means o...

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Abstract

An adapter (1) is proposed for measuring a physical state variable of a medium in a system (15) by means of a sensor. The adapter (1) has a descender tube closed towards the medium (2) which can be inserted into the medium through an opening (5) and contains the sensor and a flange plate (3) having a central recess and that can be sealingly connected with a connecting flange (5A). The descender tube (2) is sealingly fitted in the flange plate (3). The sealing fitting of the descender tube (2) in the flange plate (3) results from a temperature difference being established between the descender tube (2) and the flange plate (3), wherein the descender tube (2) is inserted into the flange plate (3), and then temperature equilibrium established between the descender tube (2) and the flange plate (3) in order to obtain a sealing press-fit connection between the descender tube (2) and the flange plate (3). The production of such an adapter is less complex and faster than with welding. Almost any material combinations are possible. Since no welding occurs, the welding procedure test and subsequent post-processing may be dispensed with.

Description

technical field [0001] The present invention relates to adapters that utilize sensors to measure physical state variables of media in a system, and methods for engaging such adapters. Background technique [0002] Adapters of the type described above typically consist of a downtube housing the sensor and a sealing flange plate used to connect the adapter to the system. The tight connection between the downpipe and the flange plate is achieved by various welding methods, such as so-called "full penetration welding". [0003] However, these methods exhibit several disadvantages and drawbacks. For example, it is not possible to join stainless steel with materials such as titanium or zirconium by welding, which rules out some material combinations in the first place. Additionally, the joining of the downtube and flange plate by welding requires a significant amount of time, ranging from about 20 minutes to several hours, depending on the material and thickness of the flange. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D11/00
CPCG01K1/14G01K13/02
Inventor P·肖克J·布罗伊蒂加姆A·罗比格
Owner WIKA ALEXANDER WIEGAND SEANDCO KG
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