A Nitrogen Filling Device Used for Leak Detection of Gas Collection Pipe Assembly

Abstract

The invention relates to a nitrogen charging device used for leakage detection of a gas collecting pipe assembly. The nitrogen charging device comprises a gas collecting pipe orifice sealing assembly and a nitrogen charging pipeline. The gas collecting pipe orifice sealing assembly comprises a rubber sealing plug, a metal sleeve, a metal backing plate, a fixed clamping groove and a fixed base plate. The rubber sealing plug is arranged in the metal sleeve, the metal sleeve is inserted into the fixed clamping groove from the bottom of the fixed clamping groove, the fixed clamping groove is clamped in the metal backing plate, the fixed base plate is installed at the position of a notch of the fixed clamping groove, and a main pipe orifice of a gas collecting pipe is inserted into the rubber sealing plug. The nitrogen charging pipeline comprises a metal pipe, a throttle valve and a pressure pipe. The head end of the metal pipe is connected with an outlet of the throttle valve, the tail end of the metal pipe is inserted into the rubber sealing plug from the bottom of the fixed base plate, an inlet of the throttle valve is connected with the pressure pipe, and the main pipe orifice of the gas collecting pipe is clamped into the rubber sealing plug and communicated with the tail end of the metal pipe. The nitrogen charging device used for leakage detection of the gas collecting pipe assembly solves the problems that an existing quick connector used for pipe orifice blocking is low in leakage detection efficiency and poor in safety.

Description

technical field [0001] The invention relates to the field of refrigeration and heating ventilation, in particular to the leak detection of gas collecting pipe assemblies, in particular to a nitrogen charging device for leak detection of gas collecting pipe assemblies. Background technique [0002] At present, in heat exchangers in the field of refrigeration and HVAC, there is often a larger pipeline as the main air collector, and several small-diameter air-collecting branch pipes are welded on the wall of the main air collector, such as figure 1 As shown, 1 is the main gas collecting pipe, 2 is the gas collecting branch pipe, and 3 is the main port of the gas collecting pipe. During cooling, the main air collecting pipe distributes the refrigerant to each branch of the heat exchanger; during heating, the main air collecting pipe concentrates the refrigerant coming from the heat exchanger branch. [0003] In the production process of the gas collecting pipe assembly, it is n...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a nitrogen charging device for leak detection of gas collecting pipe assembly, said nitrogen charging device can effectively block the main port of gas collecting pipe, improve the safe use performance, and improve the leak detection efficiency, in order to solve the problem of The existing quick connectors used for nozzle plugging have the problems of low leak detection efficiency and poor safety

Images