Concrete pump pipe is a new type of construction parts with the appearance of concrete pumps, Pump pipes are generally divided into three types, DN125, DN150 and DN80. And they also have their own high pressure and low pressure point. 125 type pump tube low pressure model is the diameter of Φ133 pipe, and the high pressure for the diameter is Φ140 pipe. The low pressure model of DN150 pump pipe is the diameter of Φ159 pipe, and the high pressure for the diameter is Φ168 pipe. The pipe head is a specially machined pipes joint, which is connected to the pipe body by welding. The connection of each pipe is connected by a pipe clamp which is processed by casting process.
Variable concrete pump reducer pipe is the import and export diameter is not the same, a large, small, because and external to connect, the interface is not the same, so to change the diameter, called the variable diameter tube.
1, changing diameter, pulse phenomenon will be improved, at the same time can change the import and export pressure, inlet diameter is mainly to improve the device cavitation margin; the outlet diameter is to reduce the pipeline construction cost. 2, the pump outlet diameter should be to reduce the export flow rate, increase the pressure bar! The export diameter is smaller than the import diameter to reduce the cost.
Pump outlet diameter is mainly to increase pump exit flow rate, reduce manufacturing costs, reduce volume and other elements. 3, import low pressure, export high pressure, avoid pump cavitation.
The inlet variable diameter of the pump is to avoid cavitation, and the inlet diameter is to change the kinetic energy of the flow into pressure energy. 4, the import of large exports are mainly: first, to avoid cavitation, two, increase the export head is to increase the pressure of the export of water sent higher and farther.
concrete delivery pipe reducing pipe for concrete pump
| Name | Material | Technic | Description |
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Twin Wall Reducer |
Outer: Q245B |
Casting | 6″-5″×1600mm,6″-5″×1500mm, |
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Inside: Cr15Mo3 |
6″-5″×1400mm,6″-5″×1200mm,6″-5″×500mm | ||
| Reducer | ST52 | 7″-6″×1300mm, 7″-6″×1100mm, 7″-6″×830mm, | |
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7″-5″×1200mm, 6″-5″×3000mm, 6″-5″×1800mm, 6″-5″×1600mm, 6″-5″×1500mm, 6″-5″×1400mm, 6″-5″×1200mm, 6″-5″×1100mm, 6″-5″×1000mm, 6″-5″×500mm, 5″-4″×1950mm, 5″-4″×918mm, |
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5″-4″×620mm, 4″-2″×1200mm, 5″-3″×1000mm, 4″-3″×1200mm, 4″-3″×918mm, 4″-3″×600mm
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How to determine the length of the variable concrete pump reducer pipe:
The length of the variable concrete pump reducer pipe is usually 4~6 times that of the diameter difference, and its angle must be less than 15 degrees. The length of the two side length is not greater than 45 degrees, and the exhaust air is not more than 60 degrees so that the length of the variable diameter duct can be calculated.
It is added to the “practical heating air conditioning design manual”. The angle between the two sides of the concentric variable diameter air supply is not more than 45 degrees, the exhaust air is not more than 60 degrees, and the two kinds of eccentricity are not more than 30 degrees.
It should be divided into gradually expanding tube and gradually shrinking tube.
The former is less than 30 degrees, and the latter is less than 15 degrees.
1. For eccentric variable diameter tubes, when the difference between the length and the diameter is not more than 300mm, the diameter of the variable diameter is 500mm long. When the difference between the long and the short or the diameter is greater than 300mm, the variable diameter is controlled to be the length of the 1000mm.
2. When the concentric variable diameter tube is used to reduce the diameter, the variable diameter control is 500mm long when the difference of the length or the diameter is not more than 600mm, and when the difference between the length and the diameter is more than 600mm, the variable diameter is controlled to be the length of the 1000mm.
3. When the concentric variable diameter tube is used to enlarge the caliber, the variable diameter control is 500mm long when the difference of the length or the diameter is not more than 400mm, and when the difference between the length and the diameter is more than 400mm, the variable diameter is controlled to be the length of the 1000mm.
2. When the concentric variable diameter tube is used to reduce the diameter, the variable diameter control is 500mm long when the difference of the length or the diameter is not more than 600mm, and when the difference between the length and the diameter is more than 600mm, the variable diameter is controlled to be the length of the 1000mm.
3. When the concentric variable diameter tube is used to expand the caliber, the variable diameter control is 500mm long when the short or short edge or the diameter difference is not more than 400mm; when the long or short edge or the diameter difference is greater than 400mm, the variable diameter controls become 1000mm long.
General construction only chooses 800-1000mm
“For eccentric diameter and variable diameter tubes, when the difference between the length and diameter is not more than 300mm, the diameter of the variable diameter is 500mm long. When the difference of the length or the diameter is greater than 300mm, the variable diameter is controlled to be a long 1000mm.
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