Steam generator secondary side pipe plate flexible sludge flushing gun head structure
A technology of steam generator and secondary side, which is applied in the direction of chemical instruments and methods, liquid injection devices, injection devices, etc. It can solve the problems of inapplicability of heat transfer tubes and inability to meet flexible flushing, so as to facilitate installation and improve safety , Improve the effect of flushing effect
Pending Publication Date: 2019-07-05
RES INST OF NUCLEAR POWER OPERATION +1
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Problems solved by technology
However, limited by the size of the hand hole of the steam generator and the internal structure of the central pipe gallery, the conventional steel belt push-pull transmission device cannot meet the requirements of flexible flushing, and the current flexible mud flushing push-pull nozzle of the steam generator is only for For steam generators arranged in a triangle, it is not suitable for steam generators with square heat transfer tubes
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[0038] The structure of a flexible sludge flushing gun head for the secondary side tube plate of the steam generator according to the present invention will be described in detail below in combination with specific implementation methods and accompanying drawings.
[0039] Such as Figure 1 to Figure 4 As shown, a structure of a flexible sludge flushing gun head for the secondary side tube plate of a steam generator in the present invention includes a steel strip cover plate 1, a rotating pin 2, a motor cavity 3, a connecting bracket 4, a push-pull bracket 5, and a deflection bracket Frame 6, flexible steel belt 26, push-pull drive mechanism and deflection drive mechanism;
[0040] Such as figure 1 As shown, the right side of the motor cavity 3 is provided with a connecting bracket 4, the right side of the connecting bracket 4 is provided with a push-pull bracket 5, and the top of the right side of the push-pull bracket 5 is provided with a deflection bracket 6 through the ro...
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The invention belongs to the technical field of steam generator secondary side pipe plate flexible sludge flushing, and particularly relates to a steam generator secondary side pipe plate flexible sludge flushing gun head structure which comprises a steel belt cover plate, a rotary pin, a motor chamber, a connecting support, a taper support, a deflection bracket, a flexible steel belt, a taper drive mechanism and a deflection drive mechanism. Flat-opening cylindrical cavities are arranged on the upper parts of the motor chamber, the connecting support and the taper support; a steel belt channel is formed on an upper area between the steel belt cover plate, the motor gun body, the connecting support and the taper support; the flexible steel belt is arranged in the steel belt channel; the end part of the flexible steel belt stretches out from the other side between the taper support and the deflection bracket; the taper drive mechanism drives the flexible steel belt in the steel belt channel to advance and retreat; and the deflection drive mechanism controls an opening angle of a stretching section of the flexible steel belt in the steel belt channel. According to the steam generatorsecondary side pipe plate flexible sludge flushing gun head structure provided by the invention, the energy loss of high-pressure water jet is reduced, and a flushing effect is improved.
Description
technical field [0001] The invention belongs to the technical field of flushing with a flexible sludge gun for a secondary side tube plate of a steam generator, in particular to a structure of a flexible sludge flushing gun head for a secondary side tube plate of a steam generator. Background technique [0002] Sludge deposition on the secondary side tube plate of the steam generator may cause serious consequences to the steam generator. Sludge removal has become an important part of the maintenance management of steam generators in nuclear power plants. The existing steam generator secondary side tube plate sludge removal method mainly adopts rigid flushing, that is, a high-pressure water nozzle that can step along the axial direction of the central pipe gallery is installed in the central pipe gallery, and the high-pressure water is sprayed from the nozzle and injected into the Between the heat transfer tubes, the sludge between the tubes is washed. However, in this sludg...
Claims
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Login to View More IPC IPC(8): B08B3/02B05B9/01
CPCB08B3/02B05B9/01
Inventor 朱立辉周政廖昌斌刘妍梁云雷
Owner RES INST OF NUCLEAR POWER OPERATION