Leakage plugging clamp device for pressure pipe of steam turbine

Through the extruded sealing device, the problem of leakage of the steam turbine pressure pipe is solved by using the heat-resistant alloy material and the extrusion pressure of the hydraulic jack, and a fast and reliable sealing effect is achieved to ensure the safety and sealing of the equipment.

CN119737208APending Publication Date: 2025-04-01HUANENG YIMIN COAL POWER CO LTD
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Patent Information

Application Number
CN202411637983.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-15
Publication Date
2025-04-01

AI Technical Summary

Technical Problem

Traditional sealing methods are difficult to effectively prevent steam leakage from the turbine pressure pipe under high pressure and high temperature conditions, resulting in equipment damage and increased noise, threatening unit operation and personnel safety, and are complex in operation and at risk of secondary leakage.

Method used

The extruded sealing clamping device is adopted, including a frame, a circular steel column and a hydraulic jack. Using heat-resistant alloy material and a high-strength frame, the circular steel column is tightly attached to the pipe wall through the hydraulic jack, and the sealing gasket is combined to enhance the sealing property, achieving rapid and effective sealing.

Benefits of technology

Fast and reliable sealing in high-pressure and high-temperature environments, reducing leakage risks, ensuring equipment safety, reducing the risk of misoperation, and providing stable sealing effects.

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Abstract

The invention relates to the technical field of leakage plugging, and discloses a steam turbine pressure pipe leakage plugging fixture device which comprises a frame matched with the outer portion of a pressure pipe of a steam turbine. By means of the extrusion type principle, the leaking stoppage clamp device has the advantages of being convenient to use, high in strength, safe and reliable, the round steel column is arranged at the frame end of the device, the round steel column is also arranged at the top of the hydraulic jack, the hydraulic jack is used for extruding the pipe wall, and therefore the leakage stoppage effect is improved. The front end of the leakage pipe is extruded to seal a steam leakage channel, no pressure exists at the crack position, welding and leaking stoppage are carried out after a defective pipeline is cut off, potential safety hazards are eliminated, and the equipment reliability is improved.
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