Punching auxiliary device for steel skeleton polyethylene plastic composite pipe

Abstract

The invention provides a punching auxiliary device for a steel skeleton polyethylene plastic composite pipe. The punching auxiliary device comprises a sealed sleeve, sealing parts, a connection pipe section and a switching valve, wherein the sealed sleeve and the steel skeleton polyethylene plastic composite pipe are coaxially arranged, the sealed sleeve is detachably and tightly held on the outer side of the steel skeleton polyethylene plastic composite pipe, and the pipe wall of the sealed sleeve is provided with an open-hole which is formed in a penetrating mode and used for avoiding a punching tool; the sealing parts are arranged on the sealed sleeve and located at the two ends of the sealed sleeve; the first end of the connection pipe section communicates with the open-hole of the sealed sleeve and is in butt joint with the open-hole; and the switching valve is used for controlling opening or closing of the connection pipe section and arranged on the connection pipe section. The punching auxiliary device for the steel skeleton polyethylene plastic composite pipe is capable of conducting punching operation on the steel skeleton polyethylene plastic composite pipe which works normally without production stopping or waiting, not only is the construction efficiency improved, but also the production schedule is ensured, and the losses caused by production stopping is avoided.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploitation, in particular to a hole opening auxiliary device for a steel skeleton polyethylene plastic composite pipe. Background technique [0002] Steel skeleton polyethylene plastic composite pipes are often used in oilfield sites. It is mainly used to transport low-pressure clean water, oily sewage and crude oil at normal temperature and low pressure. [0003] Compared with steel pipes, steel skeleton polyethylene plastic composite line pipes are widely used in oil field production sites because of their advantages such as strong corrosion resistance, low frictional resistance, low thermal conductivity, and small linear expansion coefficient. [0004] In the prior art, when a branch pipeline is installed on the original steel skeleton polyethylene plastic composite pipe, the production and processing must be stopped to avoid pollution and potential safety hazards caused by the outflow o...

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Problems solved by technology

[0008] The main purpose of the present invention is to provide an auxiliary device for opening holes for steel skeleton polyethylene plastic composite pipes, so as to solve the problems of low construction efficiency and large losses caused by production shutdowns in the prior art.

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