High-voltage multi-point flexible thermocouple sealed by high-pressure threaded connection

Abstract

The invention discloses a high-voltage multi-point flexible thermocouple sealed by threaded connection, which comprises two process connecting pieces, wherein the two process connecting pieces are connected and sealed through hollow nuts and set screws, a thread of the hollow nut is an acme thread, the other end of the second process connecting piece is connected with an equipment connecting pipe,the other end of the first process connecting piece is welded with one end of a conical protective pipe, a seal is arranged at the opening of a thick-wall armored sleeve, an independent armored thermocouple wire is connected, the thermocouple wire is in the shape of a wound cylindrical spiral line, the other end of the independent armored thermocouple wire is connected with a compensation cable,a supporting plate is arranged at the other end of the conical protective pipe, a leak detection pressure instrument is arranged on the supporting plate, and the leak detection pressure instrument isconnected with the conical protective pipe through a connecting pipe. The high-voltage multi-point flexible thermocouple sealed by threaded connection is extremely suitable for being installed in a narrow space on the premise that the size, the number of measuring points and the position of the equipment connecting pipe are not changed, and has the advantages of being easy to install and not limited by the installation space and the size of the equipment connecting pipe in the aspect of maintenance and transformation of old equipment.

Description

technical field [0001] The invention relates to the technical field of thermocouple connection, in particular to a high-pressure multi-point flexible thermocouple with high-pressure screw connection and sealing. Background technique [0002] The high-pressure multi-point flexible thermocouples used in reactors in oil refining and chemical industries are mostly sealed with RJ flanges. This connection method requires sufficient installation space outside the reactor, and the outer diameter of the connecting pipe on the reactor must meet the requirements of the corresponding flange. If the outer diameter requirements of the reactor are not met, the opening layout of the reactor needs to be redesigned; secondly, in the process of maintenance and transformation of the old reactor, it is difficult for the old reactor nozzle to meet the outer diameter requirements of the corresponding flange, and there are The installation environment is complicated and the installation space is li...

AI Technical Summary

Problems solved by technology

[0002] The high-pressure multi-point flexible thermocouples used in reactors in oil refining and chemical industries are mostly sealed with RJ flanges. This connection method requires sufficient installation space outside the reactor, and the outer diameter of the connecting pipe on the reactor must meet the requirements of the corresponding flange. If the outer diameter requirements of the reactor are not met, the opening layout of the reactor needs to be redesigned; secondly, in the process of maintenance and transformation of the old reactor, it is difficult for the old reactor nozzle to meet the outer diameter requirements of the corresponding flange, and there are The installation environment is complex and the installation space is limited

[0003] However, the solution in the prior art is usually to increase the opening of the old reactor or change the position of the opening of the old reactor, which requires corresponding changes to the original installation space, and the transformation cost is high, and the installation and transformation are difficult

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