Method for mounting nuclear island end beam of nuclear power station
A technology for nuclear power plants and end beams, which is applied in the processing of building materials, construction, building construction, etc., and can solve problems such as high installation risks, low installation accuracy, and tipping of end beams
Active Publication Date: 2012-06-27
CHINA NUCLEAR IND 23 CONSTR
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[0003] In order to solve the problems in the prior art that the installation of the nuclear island end beam is prone to end beam tipping, high installation risk, and low installation accuracy, the present invention proposes a method for installing the nuclear island end beam of a nuclear power plant. The method includes the following steps:
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[0020] like figure 1 and 2 As shown, when the end beam 1 is installed, two such as image 3 The shown fixed bracket 2 is provided with a locking structure 3 near the two ends of the end beam 1, and the fixed bracket 2 and the locking structure 3 at the corresponding position are connected through the connecting structure 4, and the connecting structure 4 connects the end beam through the locking structure 3. 1 is pulled towards the civil construction layer, so as to prevent the end beam 1 from tipping towards the center of the nuclear island. At the same time, an intermediate support device 5 is provided between the end beam 1 and the inner wall of the nuclear island cylinder, so that the force balance of the end beam 1 in the horizontal direction is in a stable state, thereby preventing the end beam 1 from being pulled to the outside of the civil construction layer. The action of the force falls to the inner wall of the nuclear island cylinder. In addition, at the position...
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The invention relates to a method for mounting a nuclear island of a nuclear power station, and particularly provides a method for mounting a nuclear island end beam of a nuclear power station, which solves the problems of easiness in tipping over and low mounting precision of a nuclear island end beam in the prior art. The method includes the steps of determining a mounting position of the end beam firstly; arranging at least two fixing rings on the inner wall of a nuclear island cylinder corresponding to the mounting position or arranging at least two fixing supports at the top of a civil engineering layer on the outer side of the nuclear island cylinder corresponding to the mounting position; mounting locking structures on the end beam corresponding to the fixing rings or the fixing supports in position, and hoisting the end beam with a hoisting device; after the end beam is hoisted in place, rigidly or flexibly connecting the locking structures with the corresponding fixing rings or the fixing supports, and arranging an intermediate support device between the end beam and the inner wall of the nuclear island cylinder if flexible connection is adopted; and fixing the end beam on a circular orbit by means of flexible connection, adjusting the position of the end beam and then demounting the hoisting device. Therefore, the end beam cannot tip over and is convenient in adjustment, and the mounting precision is improved.
Description
technical field [0001] The invention relates to a method for installing a nuclear island of a nuclear power plant, in particular to a method for installing an end beam of a nuclear island of a nuclear power plant. Background technique [0002] In the prior art, the installation position of the end girder is usually determined according to the installation position of the main girder of the nuclear island of the nuclear power plant, and then the end girder is directly hoisted to the ring track beam in the nuclear island of the nuclear power plant by a crane, and then the main girder The beams are mounted on the end beams so that the end beams can slide along the ring rails on the ring track beams. In this way, the end beam is directly installed on the circular track beam in the nuclear island by hoisting. During the installation process, the end beam is easy to tilt due to hoisting installation and is prone to tipping. The installation risk is high and there is a huge potenti...
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Inventor 刘志双王安政
Owner CHINA NUCLEAR IND 23 CONSTR