Pressure inspection piston and instrument set used therefor

Abstract

The present invention relates to a pressure checking piston and the tools group used by the pressure checking piston. A socket adaptor (70) is stored in the accepting case (5) of the tools group. Besides, the loading tools (60) are embedded at the peristome of the accepting case (5). The loading tools (60), the circumference protuberance (63) at the lower end of the handle part (61) is embedded installed at the circumference trough (7) at the inner peristome of the accepting case (5), and the handle part also acts as the cover of the accepting case. In this way, the handle part (61) can also act as the cover of the accepting case (5), so it does not need the cover of the tools group of itself. At the state that the casing (20) is absorbed at the loading tools (60), the loading tools can not installed at the accepting case (5) in the tools group. Therefore, when we unloads the casing (20) of the pressure checking piston using the loading tools (60) and the pressure checking or the air stripping has finished, it can avoid that we forget to install the casing (20) again. In this way, it can avoid the careless exposing of the piston inner part, and it will not reduce the operation character when we do experiment.

Description

technical field [0001] The present invention relates to a pressure testing plug used as a connection port of an inspection device when performing pressure testing or air cleaning in a gas pipe, and a pressure testing plug used when attaching and detaching a main body and a cover of the pressure testing plug Use the toolset. Background technique [0002] Gas piping installed in buildings and the like is provided with a connection port for connecting inspection equipment when performing various tests such as pressure checking and air cleaning. For example, when a gas meter is installed in a pipeline through a gas meter hanger unit, the connection port is provided on the downstream side of the gas meter of the hanger unit. Such a connection generally has a plug which is bolted to the opening communicating with the gas line, to which a hose connection etc. connected to the inspection machine is connected during the test. A valve that opens and closes in response to attachment ...

AI Technical Summary

Problems solved by technology

The protective cap is embedded in the front end of the plug (valve), or is screwed into the outside of the plug (valve), etc., but the protective cap will easily fall off from the plug (valve) in either way.

Therefore, it is easy to expose the inside of the plug (valve) due to the accidental fall of the protective cap, resulting in the risk of gas leakage

In this regard, if the combination structure of the plug (valve) and the protective cap is complicated and strengthened, the possibility of causing the above-mentioned gas leakage can be reduced, but when the protective cap is removed from the plug (valve) during the test It will take a lot of work and lead to a decrease in test workability

Images