A pipe plugging method for condenser titanium pipe

A technology of condenser and titanium tube, applied in the field of steam turbine, can solve the problems of poor sealing quality of titanium tube, check the tightness of sealing of titanium tube, etc., to ensure the quality and tightness of sealing, reduce pressure, and be easy to operate. Effect

Active Publication Date: 2018-10-16
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of poor quality of titanium tube plugging existing in existing condenser titanium tube plugging technology and the inability to check the tightness of titanium tube plugging before unit operation, and further provides a condenser Plugging method of steamer titanium tube

Method used

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  • A pipe plugging method for condenser titanium pipe
  • A pipe plugging method for condenser titanium pipe
  • A pipe plugging method for condenser titanium pipe

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specific Embodiment approach 1

[0017] Specific implementation mode one: combine Figure 1 to Figure 4 Illustrate this embodiment, a kind of pipe plugging method that is used for condenser titanium tube of this embodiment, the steps are as follows:

[0018] 1. Use all-titanium tube plug 1 to block the nozzles at both ends of titanium tube 2;

[0019] 2. Use the manual tungsten argon arc welding process to seal and weld the full titanium tube plug 1 and the titanium tube 2 nozzle at both ends of the titanium tube 2 respectively;

[0020] 3. Use a vacuum foaming leak detection device to check the tightness of the weld.

[0021] By adopting the tube plugging method provided by the present invention, the titanium tube 2 of the condenser with leakage can be blocked in time.

[0022] After the titanium tube 2 of the condenser of the nuclear power plant leaks, the leaking titanium tube 2 of the condenser can be blocked and the quality of the plugged tube can be ensured, the leakage source of the condenser can be ...

specific Embodiment approach 2

[0024] Specific implementation mode two: combination Figure 1 ~ Figure 3 To illustrate this embodiment, the all-titanium pipe plug 1 includes a guide section 1-1, a sealing section 1-2 and a limiting section 1-3, and the guiding section 1-1 and the limiting section 1-3 are respectively fixed on the sealing section At both ends of 1-2, the guide section 1-1 is in clearance fit with the inner hole of the titanium tube 2, the sealing section 1-2 is in interference fit with the inner hole of the titanium tube 2, and the limiting section 1-3 is located at the end of the titanium tube 2. In such a design, the guide section 1-1 plays a guiding role when the full titanium tube plug 1 is inserted into the tube hole of the titanium tube 2, the sealing section 1-2 has an interference fit with the tube hole of the titanium tube 2 to ensure sealing, and the limiting section 1- 3 After the all-titanium tube plug 1 is inserted into the hole of the titanium tube 2, it acts as a limiter. Oth...

specific Embodiment approach 3

[0025] Specific implementation mode three: combination Figure 1 ~ Figure 3 To illustrate this embodiment, one end of the all-titanium pipe plug 1 is provided with a groove 1-4, and the bottom end of the groove 1-4 is provided with a blind hole 1-5, and the diameter of the blind hole 1-5 is smaller than that of the groove 1-5. 4 in diameter. In such a design, after inserting the guide section 1-1 of the all-titanium tube plug 1 into the titanium tube 2, use the punch 100 to hit the bottom of the groove 1-4, thereby driving the all-titanium tube plug 1 into the hole of the titanium tube 2 Inside, the sealing section 1-2 is interference-fitted with the inner hole of the titanium tube 2, and the blind hole 1-5 plays a guiding role when the punch hits the all-titanium tube plug to ensure that the all-titanium tube plug is evenly stressed. Other compositions and connections are the same as in the second embodiment.

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Abstract

A pipe-blocking method for a titanium pipe of a steam condenser belongs to the technical field of steam turbines. The method solves the problems that the titanium pipe blocking quality is low and the titanium pipe blocking tightness cannot be checked before unit operation in the existing pipe-blocking technology for the titanium pipe of the steam condenser. The pipe-blocking method for the titanium pipe of the steam condenser comprises the following steps: 1, blocking the pipe orifices at the two ends of the titanium pipe by full-titanium pipe plugs; 2, performing seal welding on the full-titanium pipe plugs and the titanium pipe orifices at the two ends of the titanium pipe respectively by a manual argon tungsten arc welding process; and 3, performing airtightness detection on weld joints by a vacuum foaming leak detection device. The pipe-blocking method is used for blocking the titanium pipe.

Description

technical field [0001] The invention relates to a method for blocking titanium tubes of a condenser, belonging to the technical field of steam turbines. Background technique [0002] As an important equipment in the secondary circuit of nuclear power plant, the condenser plays a vital role in the normal economical operation of the steam turbine. The cooling tube of the condenser plays the role of condensing steam into water, and is the core component of the condenser. Therefore, the quality of the material selection of the cooling pipe determines the safety, reliability and service life of the condenser. Industrial pure titanium has good mechanical properties and corrosion resistance, and is the most commonly used material for condenser cooling pipes. Hereinafter, the cooling pipes are collectively referred to as titanium pipes. [0003] The steam turbine condenser of a nuclear power plant requires high air tightness, and when the condenser of a nuclear power plant is ope...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28F11/02B23K103/14
CPCB23K9/167B23K33/004G01M3/225
Inventor 何剑坤王健吴秋马昌盛魏岩赵畅杨飞鹏刘振国齐伟
Owner HARBIN TURBINE
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