Laser plummet fixing device and reference laser establishment method of spherical tube bundle assembly

Abstract

The invention discloses a laser plummet fixing device which comprises a base, wherein a support is arranged at the top of the base; a fixing part for fixing a laser plummet is arranged on the support part; an optical alignment channel is formed in the support part; a fixing clamping groove is formed in a side part of the base; a centering observation hole corresponding to the alignment channel is formed in the top of the base; the centering observation hole is communicated with the fixing clamping groove. As the support part is arranged on the base of the fixing device, the laser plummet fixing device is fixedly arranged on the support part by an operator, and the fixing device is mounted in an expected position through the fixing clamping groove on the base; the laser plummet is fixedly arranged on a clamping surface of a tube bundle component through the fixing device, laser is adopted as a standard line, and compared with an entity line, laser has a relatively good alignment effect and does not affect insertion of a shakeproof strip component, so that the assembling efficiency is greatly improved. The laser plummet fixing device is applied to the field of nuclear power equipment.

Description

technical field [0001] The invention relates to the field of nuclear power, in particular to a laser plummet fixing device and a reference laser establishment method for a spherical tube bundle assembly. Background technique [0002] CAP1400 / CAP1000 / Hualong No. 1 steam generator tube bundle assembly is the lung of nuclear power, and also the pressure boundary of the primary side and secondary side of the reactor. It plays a vital role. The tube bundle of CAP1400 / CAP1000 / Hualong No. 1 steam generator is spherical in shape, mainly composed of dense heat exchange tubes and anti-vibration strips embedded in it. In appearance, it appears that the anti-vibration strip components are regularly embedded in the spherical tube bundle components. After the two rows of heat exchange tubes adjacent to the anti-vibration strip assembly penetrate into the tube sheet, the anti-vibration strip assembly is inserted on the two rows of heat exchange tubes from deep to shallow, in order to rest...

AI Technical Summary

Problems solved by technology

Now the wire-drawing method is commonly used in the baseline alignment of the tube bundle assembly, but due to the repeated removal and restoration of the measurement reference line, cumulative errors will occur. When the cumulative error reaches a certain amount, it will affect the measurement results. At the same time, the reference line is an entity. The insertion of each layer of anti-vibration strip components is continuous, and interference is inevitable. Therefore, special attention must be paid to the installation of anti-vibration strip components, which seriously affects the assembly efficiency

Images