CN202041417U

CN202041417U - Quick connector used in small diameter pipe pressure test

Info

Publication number: CN202041417U
Application number: CN201120115021XU
Authority: CN
Inventors: 何永红; 吴通良; 周耀; 蔡正校
Original assignee: ZHENHAI PETROCHEMICAL JIANAN ENGINEERING Co Ltd
Current assignee: ZHENHAI PETROCHEMICAL JIANAN ENGINEERING Co Ltd
Priority date: 2011-04-13
Filing date: 2011-04-13
Publication date: 2011-11-16
Anticipated expiration: 2021-04-13

Abstract

The utility model relates to a quick connector used in a small diameter pipe pressure test. The quick connector comprises a first component and a second component, wherein the front end of the first component is provided with a column used for being connected with an air source connecting pipe, the rear end part of the first component is provided with an inner chamber of which the opening part has internal threads, a hollow elastic filler for a to-be-detected pipeline to extend into is mounted in the inner chamber, a through-hole axially penetrating the column and communicated with the inner chamber is formed at the front end part of the first component, a screw stud in threaded connection with the opening of the inner chamber is arranged at the front end part of the second component, the second component is provided with an axial hole for the to-be-detected pipeline to extend into and penetrate through the screw stud to face the inner chamber, at the same time a clamping body for clamping the to-be-detected pipeline tightly onto the second component is detachably connected with the second component. After the adoption of the structure, welding is not required in the pressure test, so that the connection between a small diameter pipe and the air source connecting pipe can be realized quickly, moreover, the operation is convenient, the cost is low, the use is repeatable, and the quick connector is especially suitable for the pressure test of small diameter pipes in production, engineering projects, and equipment manufacture.

Description

The fast interface device that a kind of small-bore pipeline pressure testing is used

Technical field

The utility model relates to a kind of interface unit that is used to connect two pipelines, specifically refers to a kind of fast interface device that source of the gas is taken over that is connected to when being suitable for small-bore pipe under test pressure testing.

Background technology

Has enough intensity and compactness in order to ensure final products, some welded tubes (as pipelines such as heat interchanger stainless steel welded pipe, fluid hose, gauge pipe, electrothermal tubes), regardless of caliber size, before using, all require mother metal is made comprehensive mechanical property, chemical analysis, physical and chemical index and EDDY CURRENT, but also will be by the requirement of the product pressure test by the Zhi Jinhang strictness.And traditional pressure-measuring method is: the mouth of pipe with pipe under test links to each other with the mouth of pipe that source of the gas is taken over by the mode of welding in advance; Then pipe under test is put into tank; Then in pipe under test, feed gases at high pressure, observe the bubble in the tank again, judge the quality of pipe under test by having or not bubble.Adopt the pressure testing interface mode of this welding, though also can finish the tight detection of pipe under test, this mode is time-consuming, effort, take material, the cost height, and can't recycle, also can't adapt to the pipeline pressure test of same specification in enormous quantities simultaneously.

The applicant once designed as Chinese patent Granted publication number " the fast interface device that pressure testing is used " for CN201628615U for this reason, this fast interface device need not any auxiliary power and device, as long as do simple spinning movement, can make things convenient for, install and remove soon pipe under test and source of the gas takes over, and it is easy to make, cost is low, can use repeatedly, has therefore overcome the defective that traditional welding fixed form is brought preferably.

But therefore the fast interface device that above-mentioned pressure testing is used can only be applicable to bigbore pipeline owing to adopt inner-tight structure.When running into small-bore pipeline, especially during the following pipeline of φ 12mm, the mode that still needs to adopt welding is fixed.So still await further improvement.

The utility model content

Technical problem to be solved in the utility model is the defective at prior art, and a kind of easy to operate, cost is low and the small-bore pipeline pressure testing that can use is repeatedly used fast interface device is provided.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: the fast interface device that this small-bore pipeline pressure testing is used comprises first, second member, it is characterized in that: the front end of described first member has air supply source and takes over the cylinder that connects, the rearward end of this first member has the tapped inner chamber of oral area, the elastic filler body that the confession pipe under test of hollow stretches into is installed in this inner chamber, and the leading section of described first member has the through hole that axially runs through described cylinder and be communicated with described inner chamber; The leading section of described second member has the double-screw bolt that is threaded mutually with the oral area of above-mentioned inner chamber, have in this second member for pipe under test and stretch into and run through double-screw bolt and the axial hole relative with above-mentioned inner chamber, simultaneously on described second member also dismounting be connected with the clamping body of described pipe under test being held tightly on described second member.

As further improvement of the utility model, the rearward end of described second member has a breach, and described clamping body is seated in this breach.And this clamping body is preferably designed for anchor ear, accordingly, on the described second member both sides outer wall, extend and the corresponding lug in described anchor ear both ends, connect by bolt between the corresponding end of each lug and described anchor ear, adopts such structure to be convenient to operate.Certainly, also breach can be opened in the middle part of second member, can realize clamping the purpose of pipe under test equally.

With being connected that source of the gas is taken over, has external thread on the described cylinder for convenience.

In above-mentioned each scheme, the profiled outline of described first and second member is designed to the regular hexagon structure, is convenient to utilize conventional instrument to pull this first, second member.

Compared with prior art, the utility model in use, as long as pipe under test passed the axial hole of second member and extend in the elastic filler body, by rotating second member, screw-in promotion elastic filler body by means of double-screw bolt contracts, the internal diameter of elastic filler body is dwindled and be close to bright and clean pipe under test outer wall, to play sealing function; Utilize the externally screwed structure of clamping body simultaneously, clamp the outer wall of pipe under test tightly, and can also guarantee under certain high pressure effect, not make the elastic filler body to move outside along with the increase of pressure to skid off.So the utility model need not welding, just can realize the pressure testing operation of small-bore pipeline easily and quickly, and easy to operate, cost is low, can use repeatedly, thereby be suitable for especially producing, the pressure test of the small-bore pipeline in engineering project and the device fabrication.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the cut-open view of Fig. 1;

Fig. 3 is the side view of Fig. 1.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As shown in Figure 1 to Figure 3, the fast interface device that this small-bore pipeline pressure testing is used comprises first member 1, second member 2 and clamping body 3, wherein first member, 1 profiled outline becomes the regular hexagon structure, so that rotary manipulations such as conventional instrument such as spanner, the front end of this first member 1 has a cylinder 11, have external thread on this cylinder, be used for connecting source of the gas and take over; The rearward end of first member has an inner chamber 12, and the mouth inner wall of this inner chamber is provided with internal thread, and hollow elastic filler body 4 is installed in the inner chamber, and this elastic filler body can stretch into wherein for pipe under test; The leading section of this first member also has the through hole 13 that axially runs through cylinder 11 and communication with cavity 12, and after cylinder was gone up in source of the gas adapter connection, gases at high pressure can enter into inner chamber 12 by this through hole 13.

Aforesaid second member, 2 profiled outlines also become the regular hexagon structure, the leading section of this second member 2 has the double-screw bolt 21 that is threaded mutually with the oral area of above-mentioned inner chamber, have in this second member and run through double-screw bolt and the axial hole 22 relative with above-mentioned inner chamber, the rearward end of this second member has a breach 23, pipe under test can stretch in the axial hole 21, and can be inserted in the elastic filler body 4 in the first member inner chamber 12.

Aforesaid clamping body 3 is seated in the breach 23 of above-mentioned second member, in the present embodiment, clamping body is an anchor ear, accordingly, on the second member both sides outer wall, extend and the corresponding lug 24 in described anchor ear both ends, connect by bolt 5 between the corresponding end of each lug and anchor ear.

During pressure testing, the cylinder of first member is threaded in source of the gas and takes over, take over the connection high-pressure air source by this source of the gas, the mouth of pipe of pipe under test inserts in the axial hole of second member, and continue to extend in the hollow elasticity filler body of the first member inner chamber, rotate second member then, make the double-screw bolt of second member be threaded in the inner chamber oral area of first member, continuous screw-in along with double-screw bolt, double-screw bolt promotes the elastic filler body, the internal diameter that makes the elastic filler body dwindles and is close to bright and clean pipe under test outer wall, to play sealing function, simultaneously clamping body is embraced and overlayed on outside the pipe under test, and this clamping body is fastened on two lugs of second member, make pipe under test be connected in tightly on second member and realize and being connected of source of the gas adapter by bolt.Obviously, after adopting the utility model, need not any auxiliary power and device equally, just can carry out pressure test to the pipeline of external diameter≤12mm, from actual test shows, after adopting the utility model, the hydraulic test pressure value can reach 18MPa, the air underwater pressure test force value can reach 14Mpa, and the clamping time only in 20 seconds, can obviously be improved pressure testing efficient, and this installation way, can not damage tubing, thus be suitable for especially producing, the pressure test of the small-bore pipeline in engineering project and the device fabrication.

Claims

1. fast interface device that the small-bore pipeline pressure testing is used, comprise first, second member (1,2), it is characterized in that: the front end of described first member (1) has air supply source and takes over the cylinder (11) that connects, the rearward end of this first member (1) has the tapped inner chamber of oral area (12), the elastic filler body (4) that the confession pipe under test of hollow stretches into is installed in this inner chamber, and the leading section of described first member (1) has the through hole (13) that axially runs through described cylinder and be communicated with described inner chamber; The leading section of described second member (2) has the double-screw bolt (21) that is threaded mutually with the oral area of above-mentioned inner chamber, have in this second member (2) for pipe under test and stretch into and run through double-screw bolt and the axial hole (22) relative with above-mentioned inner chamber, simultaneously on described second member (2) also dismounting be connected with the clamping body of described pipe under test being held tightly on described second member (2) (3).

2. the fast interface device that small-bore pipeline pressure testing according to claim 1 is used is characterized in that: the rearward end of described second member (2) has a breach (23), and described clamping body (3) is seated in this breach (23).

3. the fast interface device that small-bore pipeline pressure testing according to claim 2 is used, it is characterized in that: described clamping body (3) is an anchor ear, accordingly, on the outer wall of described second member (2) both sides, extend and the corresponding lugs in described anchor ear both ends (24), be connected by bolt (5) between the end of each lug (24) and described anchor ear.

4. the fast interface device of using according to claim 1 or 2 or 3 described small-bore pipeline pressure testings, it is characterized in that: described cylinder has external thread on (11).

5. the fast interface device of using according to claim 1 or 2 or 3 described small-bore pipeline pressure testings, it is characterized in that: the profiled outline of described first and second member (1,2) is designed to the regular hexagon structure.