TH41230B - The coupling has a pipe thread. - Google Patents

Abstract

DC60 pipe threaded couplings with excellent compression resistance. and allow for easy fastening operations The field in the vertical state is assembled by pins with male threaded areas. and a box with an area female thread A pin or box has an apex shoulder surface at the end of that section. and another assembly One has a shoulder surface which is supported by the distal shoulder surface. The thread of the area has a male thread and The area with the female thread is a trapezoidal thread with a ridge, the thread face is loaded. and threaded face edge length which is the distance in the axial direction of the component with the shoulder surface The tip between the shoulder, tip surface and the splicing thread closest to that surface is at least 140 times the pitch of the drill face. which is the distance in the axial direction between the bore face of the male thread and the female thread when the thread face is loaded with the male thread and Female threads touch each other. The bore face of the male thread, if desired, should be chamfered. The coupling has a tubular thread with excellent compression resistance. and allow for easy fastening operations The field in the vertical state is assembled by pins with male threaded areas. and a box with an area female thread A pin or box has an apex shoulder surface at the end of that section. and another assembly One has a shoulder surface which is supported by the distal shoulder surface. The thread of the area has a male thread and The area with the female thread is a trapezoidal thread with a ridge, the thread face is loaded. and threaded face edge length which is the distance in the axial direction of the component with the shoulder surface The tip between the shoulder, tip surface and the splicing thread closest to that surface is at least 140 times the pitch of the drill face. which is the distance in the axial direction between the bore face of the male thread and the female thread when the thread face is loaded with the male thread and Female threads touch each other. The bore face of the male thread should be chamfered.

Claims (4)

1. The coupling has a tubular thread and is assembled by a pin. Which is a piece with a male thread Formed on the part The end of the first tube-shaped assembly and the part's box has a female thread forming on the end. The second tube assembly, the pin and the box, each with a thread area and a torque handle surface. At least one part, the male threaded area of the rivet, against the female threaded area of the box, at least one part of the torsional shoulder surface of the rivet that is supported to the surface Minimal One part of the box in the axial direction of the coupling has a tubular thread, the shoulder joint surface for The portion of the bracing is the distal shoulder surface that forms the distal surface in the direction. The cross section of the composite part, the male thread area and the female thread area are square-shaped. A typical trapezoid with a helix, a loaded face and a drilled thread. And there is a cone that separates the threads where the length of the edge of the assembly with the distal shoulder surface, which is the distance along The axial direction between the shoulder end surface and the load-bearing face of the thread nearest to The shoulder end surface, at least, is 140 times the bore face distance, which is the axial distance between the male thread and female thread bore face. The load-bearing threads of the male thread and the load-bearing face of the female thread come into contact with each other in the grinded thread. 2. The joint has a tubular thread as defined in claim 1 where the length of the edge is at least 160 times the distance of the screw face. 3. The joint has a tubular thread. As set out in claim 1 or claim 2 where the distance of The bore threads are at least 0.01 mm. 4. The joints have a pipe thread as specified in claim 1 or claim 2, where the distance of The maximum bore thread is 0.3 mm. 5. One of the joints has a tubular thread as defined in Claims 1 to 4 where the thread of At least one part of the pin and box has a perforated face that consists of one on the base side. And the second part on the helix side And the second part has the average slope angle relative to the vertical. Clause 5, where one part has a cross-sectional surface. Longitudinal is significantly limited by a straight line. And the second has a texture that is selected from the surface according to the section. The length of the joints is significantly limited by straight lines, bulging surfaces and concave surfaces. 7. The joint has a tubular thread as defined in claim 6, where the angle of the slope of the section one. Relative to the line perpendicular to the longitudinal axis of the joint, in the range of 5 to 25 ํ. 8. The coupling has a pipe thread as defined in claim 6 or 7, where the average angle of slope. Section 2, relative to the line perpendicular to the longitudinal axis of the coupling, is in the range of 20 to 70 ํ 9. The coupling has a pipe thread as defined in Claims 5 to 8, either at Which the spiral of One part of the pin and box has a perforated face that combines the first and second sections. And the angle of The steepness of the first part relative to the perpendicular to the longitudinal axis is equal to the angle of the bore face of The thread of the pins and the box, the other 1 0. The coupling has one of the tubular threads specified in Clause 5 to 9, where the multiples of The height of the radial direction of the part of the bore thread and the length of the thread at The occurrence of threads that join each other in the thread region is greater than the difference between the cross-sectional areas along Normal radius of the body part of the welded pipe and the radial cross-sectional area of the section surface. Shoulder support for joint 1 1. The coupling has a pipe thread as specified in claims 1 to 10, either where the ridges And the base of the male and female threads are parallel to the axial direction of the coupling, having a pipe thread 1 2. The coupling has a pipe thread as defined in Claims 1 to 11, where the angle of The slope of the thread faces the load of the male and female threads relative to the perpendicular to the longitudinal axis. Of joints in the range -5 ํ +5 ํ 1 3. The coupling has a pipe thread as specified in Clause 1 to 12, either where At least one thread of pins and boxes, the load face consists of two parts. Section in the form of the third part on the root side And the fourth on the helix side And the fourth part has a corner of The average slope is relative to the line perpendicular to the longitudinal axis than the third 1. 4.The coupling has a tubular thread as defined in claim 13, where the fourth part has a cross-section surface. Significantly limited lengthwise by either a straight line or a bulging surface.