A kind of method of pipeline opening sealing
A pipe and hole opener technology, applied to pipes, branch pipelines, pipes/pipe joints/fittings, etc., can solve the problems of difficult construction, long construction period, and high cost, and achieve low construction difficulty, short construction period, and convenience sexual effect
Active Publication Date: 2020-08-04
杭州新标能源环境科技有限公司
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Problems solved by technology
At present, when connecting pipes on carbon steel rubber-lined (plastic) pipes, especially circulating slurry pipes (usually between DN450-1100), they can only be dismantled and returned to the factory to open holes for re-lined rubber before installation, which has a long construction period. , the construction is difficult and the cost is high
Method used
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Embodiment
[0027] Embodiment: a kind of method of pipeline opening plugging, as Figure 1-6 Shown: including the following steps:
[0028] A. Preparation stage: The prepared materials include connecting pipe 3, hole opener, sealing plate 4 and fixing parts;
[0029] Wherein the connecting pipe 3 and the sealing plate 4 are made of corrosion-resistant materials, the hole opener can directly use the existing pressure hole opener;
[0030] In this embodiment, the cross-section of the sealing plate 4 is an oblong structure, the curvature of the sealing plate 4 is consistent with the curvature of the inner wall of the original pipeline, and the upper end surface of the sealing plate 4 is provided with two circular holes. The center of circle of described circular hole coincides with the center of circle of both sides on oblong structure, and the diameter of described circular hole is 26mm, and depth is 4mm, and nut is fixedly installed in described circular hole ( Figure 5 D in), for detai...
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The invention discloses a pipeline holing and plugging method, and relates to the technical field of pipeline modification. The pipeline holing and plugging method comprises the following steps of A the preparation stage, wherein prepared materials comprise a connecting pipe, a hole former, and a sealing plate; B the manufacturing of the connecting pipe, wherein the outer edge of the connecting pipe is provided with a threaded structure, the bottom of the connecting pipe is fixedly provided with a pipe seat, each outer edge of the bottom of the pipe seat is 5 mm or more wider than the outer wall of the connecting pipe, and a sealing ring is embedded in the upper surface of the pipe seat; C the manufacturing the sealing plate, wherein a sealing surface which protrudes upwards is milled outof the upper end surface of the sealing plate, at least two round holes are formed in the upper end surface of the sealing plate, and the round holes are internally pre-loaded with nuts; D holing; E the installation of the connecting pipe; and F the plugging of hand holes. The pipeline holing and plugging method has the characteristic of being novel in concept, and compared with the prior art, factory prefabricating and on-site installation are combined, thus achieving the effect of stopping of a pump (a single pump) instead of a furnace, low construction difficulty, short construction period,and controllable modification cost, and the arrangement of the overhauling hand holes can provide the convenience in installation and future maintenance.
Description
technical field [0001] The invention relates to the technical field of pipeline renovation, in particular to a method for opening and sealing pipelines. Background technique [0002] In the wet flue gas desulfurization system, the concentration of CL- in the desulfurization and its wastewater slurry is high, and the pH value is generally between 5-5.5, which is corrosive. In order to meet the anti-corrosion requirements and consider the economy in the transportation of desulfurization slurry, carbon steel-lined rubber (plastic) pipelines are generally used. Since the lining cannot be made on site, these pipes need to be customized by the factory. [0003] For some reconstruction projects, it is necessary to connect pipes on carbon steel rubber-lined (plastic) pipes. The pipe diameters of these pipes are not large, generally below DN50. At present, when connecting pipes on carbon steel rubber-lined (plastic) pipes, especially circulating slurry pipes (usually between DN450-...
Claims
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IPC IPC(8): F16L41/04F16L41/08
CPCF16L41/04F16L41/086
Inventor 张贞良冯宏王琦谈群付强彭小彪
Owner 杭州新标能源环境科技有限公司