CN105804668A

CN105804668A - A connecting assembly of hydrate sampling thin-walled tubes

Info

Publication number: CN105804668A
Application number: CN201410831882.6A
Authority: CN
Inventors: 许俊良; 任红; 韩来聚; 周洪国; 陈忠帅; 赵宗峰; 田宗正; 李明朝; 周国庆
Original assignee: Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
Current assignee: Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
Priority date: 2014-12-29
Filing date: 2014-12-29
Publication date: 2016-07-27

Abstract

The invention provides a connecting assembly of hydrate sampling thin-walled tubes. The connecting assembly comprises a female thin-walled tube and a male thin-walled tube. An unthreaded hole is formed in the female thin-walled tube; the inner end of the unthreaded hole is provided with a plurality of radial square holes; the male thin-walled tube is provided with a certain quantity of elastic claw sheets; the top ends of the elastic claw sheets are provided with bosses; the external diameters of the bosses are consistent with the external diameters of the thin-walled tubes; the external diameters of the elastic claw sheets are less than the internal diameter of the unthreaded hole formed in the female thin-walled tube by a certain tolerance value. During connection, the elastic claw sheets of the male thin-walled tube are inserted in the unthreaded hole in the female thin-walled tube and the bosses arranged at the top ends of the elastic claw sheets are embedded in the radial square holes in the inner end of the unthreaded hole in the female thin-walled tube; the connection of the two thin-walled tubes is realized by means of the elastic force of the elastic claw sheets arranged on the male thin-walled tube.

Description

A kind of connection assembly of hydrate sampling light-wall pipe

Technical field

The present invention relates to oil, gas drilling sampling field of operation, specifically a kind of connection assembly for gas hydrates rope sampling instrument light-wall pipe.

Background technology

Rope heat-insulation pressure keeping coring tool due to by needing to adopt wall to close pipe as probe tube than relatively thin aluminum in drilling tool during the interior pipe being limited in this kind of instrument of design of latus rectum, between probe tube or with the connecting to want meet and there is certain intensity and connection is quick, convenient disassembly, reuse of other part.But the technology being those that have previously been is all process screw thread on non-ferrous metal or nonmetal light-wall pipe to be attached, and threaded one is processing difficulties, and two is time-consuming, effort, even can not completely dismantle each parts, cause unnecessary waste.

Summary of the invention

The invention aims to solve the deficiency that threaded light-wall pipe exists, it is provided that the connection assembly of a kind of hydrate sampling light-wall pipe.

The present invention is achieved through the following technical solutions:

The connection assembly of a kind of hydrate sampling light-wall pipe, is connected to form by thin-walled mother pipe and the male pipe of thin-walled, in its spy: light-wall pipe at least one link female is interior expanding thin-wall construction, the uniform at least two slot of periphery at this thin-walled link；The thin-walled public affairs that grafting coordinates with it are managed at least one inserted terminal and are circumferentially provided with elastic claw, the external diameter of elastic claw and thin-walled mother's pipe racks have the internal diameter of rectangle nose end suitable, elastic claw outer end is provided with the boss coordinated with slot grafting, boss external diameter is consistent with OD of Thin Wall Welded Pipe, and the quantity of elastic claw is identical with distribution slot.

Such scheme farther includes: it is identical with the elastic claw length of the male pipe of thin-walled that thin-walled mother manages interior expanding thin-walled depth.

At thin-walled mother pipe and thin-walled male pipe grafting involutory outer joint portion, sealing member is set.

The connection assembly of the hydrate sampling light-wall pipe of the present invention, revolutionize processing difficulties, time-consuming, effort that existing light-wall pipe adopts screw thread to be attached bringing, the low easy fracture of junction intensity, the problem that even can not completely dismantle each parts, during connection, the elastic claw of male for thin-walled pipe is inserted in the unthreaded hole in thin-walled mother's pipe, the boss that elastic claw top is arranged embeds in the radial direction square hole that light-wall pipe mother's unthreaded hole inner end is arranged, and the elastic force of elastic claw arranged by light-wall pipe Gongshang realizes the connection of two pieces light-wall pipe.Well achieve simple in construction, convenient disassembly, repeatable utilization, safe and reliable.

Accompanying drawing explanation

Fig. 1 is the structural representation of thin-walled pipe coupling component proposed by the invention.

In figure: 1 thin-walled mother pipe, the radial direction slot of 2 thin-walled mother's pipes, 3 thin-walled public affairs pipes, the boss on 4 elastic claw tops, the elastic claw that 5 light-wall pipe Gongshang are arranged.

Detailed description of the invention

Below in conjunction with specification drawings and specific embodiments, the invention will be further described.

With reference to accompanying drawing 1, the connection assembly of a kind of hydrate sampling light-wall pipe, the male pipe 3 of thin-walled mother's pipe 1 and thin-walled connect to form, in: female 1 at least one link of light-wall pipe is interior expanding thin-wall construction, the uniform at least two slot 2 of periphery at this thin-walled link；At least one inserted terminal of the thin-walled public affairs pipe 3 that grafting coordinates is circumferentially provided with elastic claw 5 with it, the external diameter of elastic claw 5 is suitable with the internal diameter of slot 2 end with thin-walled mother's pipe 1, elastic claw 5 outer end is provided with the boss 4 coordinated with slot 2 grafting, and boss 4 external diameter and thin-walled mother's pipe 1, thin-walled male pipe 3 external diameter are consistent；The quantity of elastic claw 5 is identical with distribution slot 2.

Further: thin-walled depth expanding in thin-walled mother's pipe 1 is identical with elastic claw 5 length of the male pipe of thin-walled 3.

Further: at thin-walled mother's pipe 1 and thin-walled male pipe 3 grafting involutory outer joint portion, sealing member is set.

Using method: by the thin-walled mother pipe processed and the male pipe of thin-walled, by square hole female with light-wall pipe for the boss on the elastic claw top arranged on male for thin-walled pipe to directly before inserting, elastic claw owing to arranging on thin-walled public affairs pipe has elasticity, firmly male for thin-walled pipe is inserted in light-wall pipe mother; the boss on the elastic claw top of the male pipe of thin-walled is embedded in the slot of thin-walled mother's pipe; realize the connection of thin-walled mother pipe and the male pipe of thin-walled, form thin-walled pipe coupling component.

Only need to firmly press the boss on thin-walled public affairs tubular elastic calvus top during dismounting, pull thin-walled mother pipe both can be made to separate with the male pipe of thin-walled.

Claims

1. the connection assembly of a hydrate sampling light-wall pipe, managed (1) by thin-walled mother and the male pipe of thin-walled (3) connects to form, it is characterized in that: female (1) at least one link of light-wall pipe is interior expanding thin-wall construction, the uniform at least two slot (2) of periphery at this thin-walled link；At least one inserted terminal of thin-walled public affairs pipe (3) that grafting coordinates is circumferentially provided with elastic claw (5) with it, the internal diameter that the external diameter of elastic claw (5) is held with slot (2) with thin-walled mother pipe (1) is suitable, elastic claw (5) outer end is provided with the boss (4) coordinated with slot (2) grafting, and it is consistent that boss (4) external diameter manages (1), thin-walled male pipe (3) external diameter with thin-walled mother；The quantity of elastic claw (5) is identical with distribution slot (2).

2. the connection assembly of hydrate according to claim 1 sampling light-wall pipe, it is characterised in that: thin-walled depth expanding in thin-walled mother pipe (1) is identical with elastic claw (5) length of the male pipe of thin-walled (3).

3. the connection assembly of hydrate according to claim 1 sampling light-wall pipe, it is characterised in that: thin-walled mother pipe (1) and thin-walled male pipe (3) grafting involutory outer joint portion, sealing member is set.