Explosion-proof and pollution-proof drilling machine

Abstract

The name of the present invention is explosion-proof and pollution-proof drilling machine. The utility model belongs to the technical field of main transformer maintenance of an electric locomotive and connection of liquefied gas and oil branch pipelines. The utility model mainly solves the problems of easy generation of sparks, heavy workload and long time consumption when existing drilling machines drill holes on the main transformer. Its main features include explosion-proof motor, twist drill, fixed bracket, movable bracket, butt flange, gate valve and connecting flange; the fixed bracket is fixed on the explosion-proof motor body, the movable bracket is connected with the fixed bracket through a screw, and the There is a control handle for adjusting the lifting of the screw; the butt flange, the gate valve and the connecting flange are connected in sequence, and are set on the twist drill; the butt flange is fixedly connected with the movable support, and there are inlet and outlet ports on it. The invention has the characteristics of no need to discharge compressor oil, no sparks, small workload, short time consumption and low cost, and is mainly used for main transformer drilling and liquefied gas and oil delivery pipelines to connect branch pipelines when maintaining electric locomotives.

Description

technical field [0001] The invention belongs to the field of maintenance of main transformers of electric locomotives and the field of technical maintenance of liquefied gas and oil transmission pipelines connecting branch pipelines. Specifically relates to an explosion-proof and pollution-proof drilling machine used for drilling main transformer holes and connecting branch pipelines to liquefied gas and oil delivery pipelines when maintaining the main transformer of electric locomotives. Background technique [0002] Shao 7 main transformer is the main transformer of Shao 7 electric locomotive, its performance directly affects the performance of Shao 7 electric locomotive, its importance is self-evident. Recently, the Ministry of Railways requested that multiple new explosion-proof valves must be added to the main transformer of Shao 7 for overhaul and medium repair, which means drilling holes in the main transformer of Shao 7. The conventional method is: pump out the tran...

AI Technical Summary

Problems solved by technology

The conventional method is: pump out the transformer oil in the main transformer, and then drill holes for the body. This conventional processing method has the following disadvantages: first, the transformer oil in the main transformer is pumped out, which will lose part of the transformer oil and also pollute Secondly, the main transformer body of Shao 7 is sealed and cannot be opened or cleaned. Even if the main transformer oil is drained, there will still be a small amount of transformer oil inside the body. If sparks are accidentally generated during drilling, it will be very dangerous. It is easy to ignite the transformer oil, causing an explosion, and the danger of drilling is very high; again, the workload is heavy, the time is long, the cost is high, and the waste is large

This method has the following disadvantages: firstly, the main valve is closed, the gas and oil are stopped, and the production and life of the enterprise cannot be carried out as usual, which affects the economic benefits of the enterprise, brings a lot of inconvenience to the lives of residents, and disturbs the people; secondly, it pollutes the environment, and it is easy to ignite gas, Oil exploded, posing a serious threat to people's lives and properties; again, the workload was heavy, time-consuming, costly, and wasteful

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