CN201679457U

CN201679457U - Screw joint

Info

Publication number: CN201679457U
Application number: CN201020139340XU
Authority: CN
Inventors: 申军波
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-22
Filing date: 2010-03-22
Publication date: 2010-12-22
Anticipated expiration: 2020-03-22

Abstract

A screw joint comprises a first oil pipe and a second oil pipe with external threads at two ends, and a threaded collar with internal threads at two ends; the internal threads of the left end of the threaded collar are symmetrically disposed with those of the right end of the threaded collar; the external threads of the right end of the first oil pipe are engaged with the internal threads of the left end of the threaded collar; the external threads of the left end of the second oil pipe are engaged with the internal threads of the right end of the threaded collar; the tapers of the external threads of both the first oil pipe and the second oil pipe are 1:6, the thread pitches are 6.35 millimeter, the heights of the external threads are 2.326 millimeter, and the guide angles of the external threads are 45 degree; and the tops of the external threads of the first oil pipe and the second oil pipe are parallel to the axial lines of the respective oil pipe.

Description

A kind of screwed connection

Technical field

The utility model relates to a kind of screwed connection, is used to connect oil pipe.

Background technology

Oil pipe is the critical component that must use in oil, the gas exploitation course, oil pipe is the oil tool that requirement can be used repeatedly, the oil pipe that uses adopts round thread or buttress thread to connect mostly at present, this advantage that is threaded is a technology maturation, process easily etc., but also have many shortcomings, wherein the most outstanding shortcoming is that thread gluing easily takes place, and oil pipe connection thread gluing meeting influences its quality of connection, and serious thread gluing meeting makes oil pipe scrap.

Summary of the invention

Traditional screwed connection pitch is little, screw thread is close, tapering is mild etc., and the purpose of this utility model is the structure that is used to connect the threaded sleeve of oil pipe by improvement, reduces the probability that oil pipe connects thread gluing greatly.

The utility model adopts following technical scheme: a kind of screwed connection, comprise that two ends all have externally threaded first oil pipe, second oil pipe and two ends all have the threaded collar joint of internal thread, the internal thread of the internal thread of threaded collar joint left end and threaded collar joint right-hand member is symmetric arrangement, the internal thread engagement of the external screw thread of the first oil pipe right-hand member and threaded collar joint left end, the internal thread engagement of the external screw thread of the second oil pipe left end and threaded collar joint right-hand member, the externally threaded tapering of first oil pipe and second oil pipe is 1: 6, the externally threaded pitch of first oil pipe and second oil pipe is 6.35 millimeters, the externally threaded height of first oil pipe and second oil pipe is 2.326 millimeters, the externally threaded guide angle of first oil pipe and second oil pipe is 45 degree, and the externally threaded top of first oil pipe and second oil pipe all is parallel to the axis of oil pipe separately.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

The specific embodiment

This screwed connection, comprise that two ends all have first oil pipe 1 of external screw thread 5, second oil pipe 3 and two ends all have the threaded collar joint 2 of internal thread 4, the internal thread of the internal thread of threaded collar joint 2 left ends and threaded collar joint 2 right-hand members is symmetric arrangement, the external screw thread of first oil pipe, 1 right-hand member and the engagement of the internal thread of threaded collar joint 2 left ends, the external screw thread of second oil pipe, 3 left ends and the engagement of the internal thread of threaded collar joint 2 right-hand members, the externally threaded tapering of first oil pipe 1 and second oil pipe 3 is 1: 6, the externally threaded pitch of first oil pipe 1 and second oil pipe 3 is 6.35 millimeters, the externally threaded height of first oil pipe 1 and second oil pipe 3 is 2.326 millimeters, the externally threaded guide angle of first oil pipe 1 and second oil pipe 3 is 45 degree, and the externally threaded top of first oil pipe 1 and second oil pipe 3 all is parallel to the axis of oil pipe separately.

Claims

1. screwed connection, comprise that two ends all have externally threaded first oil pipe, second oil pipe and two ends all have the threaded collar joint of internal thread, the internal thread of the internal thread of threaded collar joint left end and threaded collar joint right-hand member is symmetric arrangement, the internal thread engagement of the external screw thread of the first oil pipe right-hand member and threaded collar joint left end, the internal thread engagement of the external screw thread of the second oil pipe left end and threaded collar joint right-hand member, it is characterized in that: the externally threaded tapering of first oil pipe and second oil pipe is 1: 6, the externally threaded pitch of first oil pipe and second oil pipe is 6.35 millimeters, the externally threaded height of first oil pipe and second oil pipe is 2.326 millimeters, the externally threaded guide angle of first oil pipe and second oil pipe is 45 degree, and the externally threaded top of first oil pipe and second oil pipe all is parallel to the axis of oil pipe separately.