concrete pipe
A technology for concrete pipes and steel pipes, applied in the direction of pipes, rigid pipes, pipeline protection, etc., can solve the problems of corrosion of steel cylinders, weak corrosion resistance, shortened service life of prestressed concrete cylinders, etc., and achieve the effect of prolonging service life.
Active Publication Date: 2016-05-25
NINGXIA QINGLONG PIPES IND
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Problems solved by technology
[0004] However, since the prestressed steel cylinder concrete pipe needs to be buried underground, the corrosion resistance of the mortar protection layer and the high-stress cold-drawn steel wire is weak, and the steel cylinder is easily corroded, resulting in the corrosion of the prestressed steel cylinder. Reduced service life of cylindrical concrete pipes
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[0019] The present invention will be described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.
[0020] This embodiment provides concrete pipes such as figure 1 with figure 2 As shown, it includes: a steel cylinder and a cathodic protection system; the outer surface of the steel cylinder is provided with a conductive steel strip 108 along its extending direction; the outer surface of the steel cylinder is also provided with a steel bar 106, and the steel bar 106 is wound around the steel cylinder On the outer surface, and the conductive steel strip 108 is located between the steel cylinder and the steel bar 106; the conductive steel strip 108 is electrically connected with the cathodic protection system; the inner surface of the steel cylinder is provided with an inner protective layer 104; the outer surface of the steel cylinder is provided with The outer protection layer 105 covers the conductive steel str...
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The invention relates to the field of pipeline transmission, in particular to a concrete tube. The concrete tube comprises a steel cylinder and a cathode protection system. A conductive steel belt is arranged on the outer surface of the steel tube in the extending direction; the outer surface of the steel cylinder is further provided with a steel rib, the steel rib is wound on the outer surface of the steel cylinder, and the conductive steel belt is located between the steel cylinder and the steel rib; the conductive steel belt is electrically connected with the cathode protection system; an inner protection layer is arranged on the inner surface of the steel cylinder; the outer surface of the steel cylinder is provided with an outer protection layer, and the outer protection layer covers the conductive steel belt and the steel rib. According to the concrete tube, the outer surface of the steel cylinder is provided with the conductive steel belt, and the conductive steel belt is electrically connected with the cathode protection system, so that the steel cylinder and the cathode protection system form a loop. When the concrete tube is buried underground for liquid conveying, the steel tube is on the cathode and corrosion of the steel cylinder is prevented because the concrete tube is electrically connected with the cathode protection system, and the service life of the concrete tube is prolonged.
Description
technical field [0001] The present invention relates to the field of pipeline transportation, in particular to concrete pipes. Background technique [0002] Concrete pipes are pipes made of concrete or reinforced concrete for transporting fluids such as water, oil, and gas. [0003] Concrete pipes in the related art are divided into plain concrete pipes, ordinary reinforced concrete pipes, self-stressed reinforced concrete pipes and prestressed steel cylinder concrete pipes. Among them, the most widely used is the prestressed steel cylinder concrete pipe, which includes a concrete core containing a steel cylinder, high-strength prestressed cold-drawn steel wire, and a mortar protection layer. The steel cylinder is made of thin steel plate with a thickness of 1.5mm. The steel cylinder is embedded in the tube core concrete. The outer surface of the tube core is provided with multi-ring high-strength prestressed cold-drawn steel wires to strengthen the pressure bearing capacit...
Claims
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IPC IPC(8): F16L9/153F16L58/00
CPCF16L9/153F16L58/00
Inventor 宁靖华雍富强张宪伟
Owner NINGXIA QINGLONG PIPES IND