Anti-theft device for instrument at petroleum well head and petroleum exploitation pipeline

Abstract

The invention provides an anti-theft device for an instrument at a petroleum well head and a petroleum exploitation pipeline and belongs to the field of safety and theft prevention. The device comprises a lock cylinder mechanism, a spring bolt mechanism, a handle and a locking shell. The locking shell comprises a top wall, a bottom wall and a fence. The bottom wall is fixed on a metal tube of the instrument at the petroleum well head, the fence is provided with an opening, a cover plate is arranged at the opening, and the cove plate is rotatably connected to the top wall. The spring bolt mechanism comprises a telescopic rod, a first-level locking rod and a second-level locking rod; the first-level locking rod is connected to the telescopic rod, and the second-level locking rod is connected to the telescopic rod. A first-level locking part and a second-level locking part are arranged on the cover plate. The lock cylinder mechanism has a driving assembly which is in driving connection to the second-level locking rod. The handle comprises a diameter-variable locking end. The anti-theft device for the instrument at the petroleum well head is directly mounted out of the instrument to wrap the instrument, so that not only is use of the instrument not affected, but also the instrument is prevented from being likely to be damaged or stolen; the instrument is safer to use, and the maintenance and replace costs are lowered.

Description

technical field [0001] The invention relates to the field of safety and anti-theft, in particular to an oil wellhead instrument anti-theft device and an oil exploitation pipeline. Background technique [0002] In the process of oil extraction, multiple pipelines need to be connected. In order to facilitate timely understanding of the flow of crude oil, instruments are installed on the pipelines, and the instruments are generally located on the pipelines at the head of the oil well. [0003] The inventor found in the research that the traditional oil wellhead instrument has at least the following disadvantages during use: [0004] The traditional oil wellhead instrument is installed behind the pipeline and directly exposed to the external environment. The instrument is easily damaged or stolen, which greatly reduces the service life of the instrument and increases the cost and difficulty of oil exploitation. Contents of the invention [0005] The object of the present inve...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an anti-theft device for oil wellhead meters to improve the problem that traditional wellhead oil meters are easily damaged or stolen when they are directly exposed to the external environment during use

[0006] The purpose of the present invention is also to provide an oil extraction pipeline to improve the problem that the traditional wellhead oil gauge installed on the oil pipeline is directly exposed to the external environment and is easily damaged or stolen during use.

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