一种增强热塑性复合管扣压接头

Abstract

本实用新型提供了一种增强热塑性复合管扣压接头，涉及管道连接技术领域，包括连接套管、锥形套、第一条形缺口、第一管道、第二管道、外套螺母、环形槽、锁紧环、第二条形缺口；采用螺接的外套螺母挤压外侧端开设有第一条形缺口的锥形套外壁，锥形套外侧端径向收缩挤压连接套管外侧端同侧，连接套管两端外壁也开设有第一条形缺口，连接套管两端受到挤压径向收缩挤压锁紧环，锁紧环外壁纵向设有第二条形缺口，在受到挤压后径向收缩箍紧在第一管道和第二管道内侧端上，上述扣压接头压力经过逐级均匀传递，避免了第一管道和第二管道外壁直接受到挤压力，造成压溃或增强纤维剪切损伤，避免形成泄漏点。

Claims

1. An enhanced thermoplastic composite pipe compression joint, characterized by, include: The connecting sleeve (3) has tapered sleeves (7) symmetrically fixed at both ends of its outer wall. The outer diameter of the tapered sleeve (7) gradually decreases from the inside to the outside; The outer edge of the conical sleeve (7) and the corresponding inner and outer edges of the two ends of the connecting sleeve (3) are provided with a first strip-shaped notch (8); The first pipe (1) and the second pipe (2) are respectively inserted into the left and right ends of the connecting sleeve (3); The outer end of the conical sleeve (7) is screwed with an outer nut (5), and its inner wall is provided with a slope that matches the outer wall of the conical sleeve (7); Both the inner end outer wall of the first pipe (1) and the second pipe (2) are provided with annular grooves (9); The annular groove (9) is fitted with a locking ring (4), and its outer wall has a second strip-shaped notch (43) longitudinally opened. The inner walls of both ends of the connecting sleeve (3) are in contact with the outer wall of the locking ring (4) on the same side; The outer nut (5) presses against the outer end of the corresponding tapered sleeve (7), the outer end of the connecting sleeve (3), and the locking ring (4) so ​​that they abut against the outer wall of the inner end of the first pipe (1) or the second pipe (2).

2. A reinforced thermoplastic composite pipe compression joint according to claim 1, characterized in that A sealing structure (6) is assembled between the inner end of the outer wall of the locking ring (4) and the inner wall of the connecting sleeve (3) on the same side.

3. A reinforced thermoplastic composite pipe compression joint according to claim 2, wherein, The sealing structure (6) includes: The first annular groove (61) is formed on the inner end of the outer wall of the locking ring (4); An O-ring (62) is fitted inside the first annular groove (61); The inner wall end of the connecting sleeve (3) is provided with a second annular groove (63) corresponding to the first annular groove (61). The outer side of the O-ring (62) is inserted into the corresponding second annular groove (63).

4. A reinforced thermoplastic composite pipe compression joint according to claim 1, wherein The connecting sleeve (3) includes: The connecting pipe (31) is sleeved on the outer side of the inner end of the first pipe (1) and the second pipe (2). The outer wall of the locking ring (4) is in contact with the inner wall of the connecting tube (31) on the same side; The first strip-shaped notch (8) is opened at both ends of the outer wall edge of the connecting pipe (31).

5. A reinforced thermoplastic composite pipe compression joint according to claim 1, wherein, The first strip-shaped notch (8) is uniformly and circumferentially opened at the outer edge of the conical sleeve (7) and at the corresponding positions on the inner and outer edges of both ends of the connecting sleeve (3); The number of the first strip-shaped notch (8) distributed circumferentially is six.

6. An enhanced thermoplastic composite pipe compression joint according to claim 4, wherein, The connecting tube (31) has an annular protrusion (32) integrally formed in the middle of the inner annular surface. The inner ends of the first pipe (1) and the second pipe (2) abut against the inner wall of the annular protrusion (32) on the same side; The inner diameters of the first pipe (1) and the second pipe (2) are the same as the inner diameter of the annular protrusion (32).

7. A reinforced thermoplastic composite pipe crimping joint according to claim 4, characterized in that, The inner walls at both ends of the connecting tube (31) and the outer wall of the locking ring (4) on the same side are fitted with an inner and outer tooth engagement structure, which includes: The inner concave and convex teeth (42) are evenly distributed on the outer wall of the locking ring (4); The inner walls of both ends of the connecting tube (31) are integrally formed with outer concave and convex teeth (33) corresponding to the inner concave and convex teeth (42) on the same side. The outer concave-convex tooth (33) and the inner concave-convex tooth (42) on the same side bite each other.

8. An enhanced thermoplastic composite pipe compression joint according to claim 1, wherein, The locking ring (4) includes: An elastic metal ring (41) is fitted into the annular groove (9); The second strip-shaped notch (43) is longitudinally opened on the outer wall of the elastic metal ring (41).

9. An enhanced thermoplastic composite pipe compression joint according to claim 1, wherein, The outer nut (5) includes: An octagonal nut (51) has an inner wall with a slope that matches the outer wall of the conical sleeve (7); The octagonal nut (51) has an internal thread (52) on its inner wall slope.

10. An enhanced thermoplastic composite pipe compression joint according to claim 9, wherein, The conical sleeve (7) includes: The outer wall of the collar (71) is a conical slope that slopes from the inside out; The conical slope of the collar (71) has the same inclination angle as the inner wall slope of the octagonal nut (51); The outer wall of the collar (71) is provided with an external thread (72) that matches the internal thread (52); The first strip-shaped notch (8) is uniformly circumferentially opened at the outer edge of the collar (71).

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