Chemical plant waste gas treatment pipeline sealing treatment system

Abstract

The invention relates to a chemical plant waste gas treatment pipeline sealing treatment system. The system comprises an upper locking mechanism, a lower locking mechanism and a repairing mechanism. The upper locking mechanism and the lower locking mechanism are arranged symmetrically up and down. The repairing mechanism is connected between the upper locking mechanism and the lower locking mechanism. The repairing mechanism comprises a repair half-ring, a connecting bolt, a connecting nut, a pressing plate, a connecting rack, a limit plate, a transmission gear, a reverse rack and a buffer spring. The upper locking mechanism comprises a locking half ring, a locking bolt, a locking nut, a compression half ring, a compression bolt and a sealing ring. The system is a three-stage structure asa whole. The damaged part of a pipeline is repaired by the repairing mechanism, and the repairing mechanism is locked and sealed by the upper locking mechanism and the lower locking mechanism to prevent the gas inside the pipeline from overflowing. The sealing ring is arranged outside the repairing mechanism, so it is not necessary to disassemble the whole system when replacing the sealing ring.

Description

technical field [0001] The invention relates to the technical field of chemical pipelines, in particular to a sealing treatment system for waste gas treatment pipelines in chemical plants. Background technique [0002] Chemical waste gas refers to the poisonous and harmful gas discharged from chemical plants in chemical production. Chemical waste gas often contains many types of pollutants, complex physical and chemical properties, and different toxicity, which seriously pollutes the environment and affects human health. Therefore, in the production process, it is necessary to ensure that the chemical plant waste gas treatment pipeline has good sealing performance. Once the pipeline is damaged , it needs to be repaired in time. [0003] Methods for repairing discarded pipelines include pipe replacement repair, surfacing welding repair, and pipeline repairer repair, etc. However, these repair methods have shortcomings in the actual operation process: [0004] (1) The pipe r...

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Problems solved by technology

[0004] (1) The pipe replacement repair method can solve all the problems existing in the repair section at one time, but there are certain safety and environmental risks in the pipe replacement repair, which requires high safety measures for construction operations

In addition, the construction of pipe replacement requires large-scale equipment and excellent welding technicians, which takes a long time and requires high maintenance costs

[0005] (2) The surfacing welding repair method does not need to close the pipeline during construction, which is more convenient than the pipe replacement repair method, but there are risks in welding operations on the running pipeline, which may cause the pipe wall to burn through and burst

Once the pipe at the welded part is corroded and perforated, a pressurized cavity will be formed between the outer wall of the original pipe and the reinforcing steel plate. Due to the lack of penetration, the weld is easily pulled apart, causing greater losses

[0006] (3) The pipeline repairer is composed of two semi-annular structures. During construction, the two semi-annular structures are closely attached to the outer wall of the pipeline, and then the two semi-annular structures can be connected by bolts and other connecting parts without closing the pipeline. And there is no risk of damage to the pipe wall during construction, but because the two half-rings are connected by a sealing strip, the sealing strip will age after long-term use, and the sealing performance will be reduced. It is necessary to remove the repair device from the outer wall of the pipe before repairing it. Seal strips for replacement

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