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Chapter 3, plumbing pipes and pipe fittings processing and production.
Section 3, pipe fittings production.
Third, the production of tees.
Key detail 17: Deployment and production of equal diameter diagonal tee
The unfolding and manufacturing method of equal diameter oblique tee pipe is as follows:
1.First of all, we need to draw a projection diagram of the oblique tee pipe according to the outer diameter of the main pipe and the branch pipe (the outer diameter of the two pipes is equal) and the intersection angle a. In the projection diagram, the angle of intersection of the main pipe and the branch pipe is known.
2.Next, draw a semicircle at the tip of the branch and divide it into six equal parts. Draw an oblique straight line parallel to the center line of the branch pipe from each equal point downward, so that it intersects with the joint line of the main pipe to obtain a straight line'Wait. Move these segments to the corresponding segments of the perimeter equidivision of the branch pipe, and connect the resulting intersection points with smooth curves to form an expanded view of the branch pipe (male head model).
3.Then, divide the upper half circle of the right section into six equal parts. Lead the horizontal line from each intersection to the left, and'Points coincide.
4.Then, at the common point above the branch and the main pipe, the sequence from right to left is numbered. Through these points, the vertical line is drawn downward, and the bisecting line of the circumference of the semicircle (z) intersects, and the intersection point ° is obtained. Connecting the intersections with smooth curves is the unfolded diagram of the main pipe opening (female head template).
5.Finally, the method of drawing, blanking and splicing of the equal diameter oblique tee is the same as that of the equal diameter positive tee. The groove is flexibly mastered according to the size of the angle and the length of the opening, so as to meet the welding requirements as the principle. The main pipe and branch pipe can generally be 30° 35° in the upper half of the foot on the obtuse angle, and the lower half is only 30° at the sharp angle, and then gradually transition to 45°, and then gradually and evenly transition.
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The next lecture is about the knowledge points, and the key detail 18: the deployment and production of the reducer inclined tee
Solid diagram of the pipeline site.
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