Wellhead plugging device for multifunctional monitoring well of refuse landfill
A technology for a landfill and a plugging device, which is applied in the fields of landfill technology, engine sealing, and solid waste removal, etc., can solve problems such as the inability to effectively prolong the sealing aging period and the inability of the plugging device to effectively block, etc. Achieve the effect of prolonging the sealing time and avoiding environmental pollution
Pending Publication Date: 2021-08-31
刘萍
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Problems solved by technology
[0003] In view of the above situation, in order to solve the problems existing in the prior art, the purpose of the present invention is to provide a multifunctional monitoring well wellhead plugging device in a landfill, which can effectively solve the problem that the existing plugging device cannot be installed in the early stage of air leakage. Problems of effective sealing and inability to effectively prolong the sealing time
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[0018] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0019] Depend on Figure 1 to Figure 6 Given, the present invention includes a vertical well pipe 1, the well pipe 1 is coaxially provided with a monitoring pipe 2, the upper end of the well pipe 1 is blocked by an end cover 3, and the end cover 3 is provided with a first unit for pressure relief. To the valve 4;
[0020] The monitoring pipe 2 in the well pipe 1 is covered with an upper plug 5, which can move up and down in the well pipe 1, and a lower plug 6 fixed on the inner wall of the well pipe 1 is arranged below the upper plug 5, and the upper plug 5 can move up and down in the well pipe 1. A feeding device is provided between the plug 5 and the lower plug 6, and the feeding device fills the rubber particles 7 between the upper plug 5 and the lower plug 6, and the upper plug 5 moves downward to squeeze the rubber...
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The invention relates to a wellhead plugging device for a multifunctional monitoring well of a refuse landfill. The problems that an existing plugging device cannot conduct effective plugging at the initial stage of air leakage and cannot effectively prolong the sealing time efficiency are effectively solved. According to the technical scheme, the device comprises a well pipe, and a monitoring pipe is coaxially arranged in the well pipe; an upper plug and a lower plug are arranged on the monitoring pipe, a feeding device is arranged between the upper plug and the lower plug, and the upper plug extrudes rubber particles downwards, so that plugging is formed between the well pipe and the monitoring pipe; a gas storage chamber is arranged above the upper plug; the gas storage chamber and the upper plug move upwards, so that the extrusion force between the rubber particles is reduced, and the feeding device is triggered to fill the rubber particles; and the gas storage chamber moves upwards to trigger a second one-way valve to release pressure, the upper plug moves downwards to extrude the rubber particles, and plugging is formed again. The problems that an existing plugging device cannot perform effective plugging at the initial stage of air leakage and cannot effectively prolong the sealing time efficiency are solved, and the sealing time efficiency is effectively prolonged.
Description
technical field [0001] The invention relates to the field of wellhead sealing, in particular to a wellhead sealing device for a multifunctional monitoring well in a landfill. Background technique [0002] In landfills and other places, after the garbage is buried underground, some methane and other gases will be generated. Generally, a multi-functional monitoring well for environmental monitoring will be installed. The well pipe is directly inserted into the ground, and the environmental monitoring device is installed on the well cap. The component is used to sample the well pipe in order to monitor the downhole environment; in order to prevent the gas in the well from leaking from the wellhead, a sealing device needs to be installed on the wellhead; generally a sealing ring or a gasket is used for sealing, but these sealing structures have a sealing effect Poor, short sealing period, at the same time, the staff needs to carry out regular maintenance, and the workload of fre...
Claims
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IPC IPC(8): F16J15/14E02D29/045B09B1/00
CPCF16J15/14E02D29/045B09B1/00Y02W30/30
Inventor 刘萍
Owner 刘萍