Heat exchanger tube bundle high pressure flushing nozzle

Abstract

The invention provides a high-pressure flushing injection head for a head exchanger pipe bundle. The high-pressure flushing injection head for the heat exchanger pipe bundle comprises an assembling housing; an inclined injection part, a liquid quick joint and a mechanical quick joint are fixed on the assembling housing; the assembling housing is connected with a vertical injection part; a plurality of inclined high-pressure injection heads are arranged on the inclined injection part; a plurality of vertical high-pressure injection heads are arranged at the vertical injection part; the vertical injection part is connected with a transmission mechanism; the transmission mechanism is connected with a transmission driving device through the mechanical quick joint; the transmission mechanism drives the vertical injection part to rotate; the water spraying direction of the vertical high-pressure injection heads are vertical to a rotating axis of the vertical injection part; the water spraying direction of the inclined high-pressure injection heads are in an inclination angle with the rotating axis of the vertical injection part. With the adoption of the high-pressure flushing injection head for the heat exchanger pipe bundle, water can be injected at constant speed to mud concentrating points of a heat exchanger pipe plate and the pipe bundle, and any dead angle in flushing is avoided; the pure mechanical movement mechanism avoids complex electric signal interference, and therefore, the convenience conditions are provided for the works of other specialties.

Description

technical field [0001] The invention relates to a high-pressure flushing nozzle of a tube bundle of a heat exchanger. Background technique [0002] At present, the heat exchangers of most nuclear power plants in China adopt a vertical flat U-shaped tube structure. Nuclear power plants using this type of heat exchanger will encounter a serious problem. The non-volatile impurities and corrosion products entering with the feed water will deposit in the gaps between the tube sheets, support plates and heat transfer tubes. These deposits will greatly reduce the heat transfer efficiency of the heat transfer tube, and also provide a large number of favorable environmental conditions for the corrosion of the heat transfer tube, which will easily cause hidden dangers to the safety of the nuclear power plant. In order to solve this problem, major companies at home and abroad have conducted a large number of theoretical studies and field tests on the "technology of cleaning heat excha...

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Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a high-pressure flushing nozzle for heat exchanger tube bundles, which is used to solve the problem of poor reliability, complicated operation, low efficiency, and flushing problems of the high-pressure flushing nozzle in the prior art. dead end problem

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