CN203823294U - Movable flange joint - Google Patents

Movable flange joint Download PDF

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Publication number
CN203823294U
CN203823294U CN201420169967.8U CN201420169967U CN203823294U CN 203823294 U CN203823294 U CN 203823294U CN 201420169967 U CN201420169967 U CN 201420169967U CN 203823294 U CN203823294 U CN 203823294U
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CN
China
Prior art keywords
flange
tube head
joint
interior tube
seal groove
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Active
Application number
CN201420169967.8U
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Chinese (zh)
Inventor
石建设
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANJIN GREENTSING PIPELINE TECHNOLOGY Co Ltd
Original Assignee
TIANJIN GREENTSING PIPELINE TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by TIANJIN GREENTSING PIPELINE TECHNOLOGY Co Ltd filed Critical TIANJIN GREENTSING PIPELINE TECHNOLOGY Co Ltd
Priority to CN201420169967.8U priority Critical patent/CN203823294U/en
Application granted granted Critical
Publication of CN203823294U publication Critical patent/CN203823294U/en
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Abstract

The utility model discloses a movable flange joint which comprises an upper flange, an inner pipe head and a rotary flange, wherein an inner hole of the upper flange is communicated with an inner chamber of the inner pipe head; the rotary flange sleeves the inner pipe head, and is fixedly connected with the upper flange; two sealing grooves are formed in the matching surface of theupper flange and theinner pipe head; sealing rings are arranged in the sealing grooves; a liquid inlet hole is further formed in the movable flange joint; one end of the liquid inlet hole is communicated with the matching surface of the two sealing grooves; the other end of the liquid inlet holeis communicated with the outside of the flange joint. The movable flange jointis compact in structure and reasonable in design, can conveniently and fast realize the butting of pipelines, and has a sealing self-checking function.

Description

Loose flange joint
Technical field
The utility model relates to oil-gas gathering and transferring pipeline activity docking field, particularly a kind of loose flange joint with sealing self-checking function.
Background technique
Two pipe ends of being everlasting between the main pipeline of oil-gas gathering and transferring pipeline and downstream line arrange flange to be fixedly connected with, after needing the attachment hole on piping flange to align completely in docking operation, dock, operant level requirement to technician is higher, and docking operation is more loaded down with trivial details.
In order to overcome the problems referred to above, people often adopt some to realize the butt-joint operation between pipeline with the joint of flange arrangement, but effect is not still very good, particularly the sealing effect of joint is not fine, and its sealing also cannot detect, technician can not learn the sealability after pipeline docking.Once pipeline leaks at joint, not only can exert an influence to the efficiency of manufacturing operation and normal operation, in serious situation, also can cause production accident.
Therefore, how to provide a kind of loose flange joint, can realize quickly and easily the docking between pipeline, and the sealability of being convenient to technician's butt joint testing, is the technical problem of the required solution in related domain.
Model utility content
For the deficiencies in the prior art, the utility model provides a kind of loose flange joint, and this loose flange joint structure compactness is reasonable in design, can realize quickly and easily the mating operation of pipeline, and have sealing self-checking function.
To achieve these goals, a kind of loose flange joint that the utility model provides, comprise upper flange, interior tube head and rotary flange, the endoporus of described upper flange and the inner chamber of described interior tube head are conducted, described rotary flange is sheathed on described interior tube head outside, and described rotary flange is fixedly connected with described upper flange; Fitting surface between described upper flange and described interior tube head is provided with two seal grooves, in described seal groove, be provided with seal ring, on described loose flange joint, be also provided with inlet opening, described fitting surface between one end conducting to two of described inlet opening described seal groove, the other end conducting is to described loose flange joint outside.
Preferably, one end that described inlet opening is positioned at described loose flange joint outside is provided with plug.
Preferably, described inlet opening is located on described interior tube head, the described fitting surface between one end conducting to two of described inlet opening described seal groove, and the other end conducting is to the outer peripheral surface of described interior tube head.
Preferably, described inlet opening is located on described upper flange, the described fitting surface between one end conducting to two of described inlet opening described seal groove, and the other end conducting is to the outer peripheral surface of described upper flange.
Preferably, described seal groove is made up of upper seal groove and lower seal groove cavity, and described upper seal groove is located on described upper flange, and described lower seal groove cavity is located on interior tube head.
Preferably, described seal ring is seal ring or the soft seal ring with steel ring.
Preferably, between described rotary flange and described upper flange, be bolted.
Preferably, described bolt below is provided with spring washer.
Preferably, described upper flange is provided with upper bevel for welding away from one end of described interior tube head, and described interior tube head is provided with lower bevel for welding away from one end of described upper flange.
Loose flange joint provided by the invention, comprise upper flange and interior tube head, upper flange docks conducting with interior tube head, interior tube head outside is arranged with rotary flange, and rotary flange is fixedly connected with the flange hole of upper flange, thereby interior tube head and upper flange are fixed together, when use, upper flange is welded on main pipeline, interior tube head is welded on the movable pipeline in downstream, finally rotary flange rotation is made the flange hole of itself and upper flange be mapped and link together, and has completed the rapid abutting joint of pipeline.In addition, on the fitting surface of interior tube head and upper flange, be provided with two seals groove, in groove, be provided with seal ring, strengthened sealing effect.Between two seals groove, be provided with the inlet opening that is always conducting to loose flange joint outside, can check that to applying hydraulic pressure in inlet opening whether the sealing of seal groove and seal ring is intact, by other additional inspection of hermetic seal instruments, realize the function of sealing self-inspection without again.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of embodiment of loose flange joint provided by the utility model;
Fig. 2 is the structural representation of the another kind of embodiment of loose flange joint provided by the utility model.
In figure:
1. interior seal groove 11. external sealed groove 12. inlet openings of bevel for welding 7. rotary flange 8. spring washer 9. bolt 10. under the upper interior tube head 6-1 of bevel for welding 3. seal ring 4. steel ring 5. plug 6., 6-2. lower seal groove cavity 6-3. of nut 2. upper flange 2-1, the upper seal groove 2-3. of 2-2.
Embodiment
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1
Please refer to Fig. 1, loose flange joint provided by the invention, is mainly made up of upper flange 2, interior tube head 6 and rotary flange 7.Upper flange 2 docks with interior tube head 6, the inner chamber mutual conduction of the endoporus of upper flange 2 and interior tube head 6, the interior tube head 6 sheathed rotary flanges 7 in outside, can be taking interior tube head 6 as 360 ° of rotations of axle, rotary flange 7 is connected and fixed by bolt 9 and nut 1 with upper flange 2, bolt 9 belows are also provided with spring washer 8, have strengthened the fastening effect of bolt 9, prevent its loose or dislocation under long-term work condition.Upper flange 2 is provided with upper bevel for welding 2-3 away from one end of interior tube head 6, convenient and main pipeline welding, and interior tube head 6 is provided with lower bevel for welding 6-3 away from one end of upper flange 2, so that and downstream line welding.
On the fitting surface (position connecting) of upper flange 2 and interior tube head 6, be provided with two seals groove, the inner side of together close loose flange joint, be called interior seal groove 10, another road is near the outside of loose flange joint, be called external sealed groove 11, interior sealing 10 and external sealed groove 11 in the footpath of loose flange joint upwards (be upper flange 2 endoporus or interior tube head 6 radially) separate certain distance, every road sealing groove 10, in 11, be provided with seal ring 3, an outer setting in two seals groove one, loose flange joint is played to the effect of double seal, seal groove 10, in 11, be also provided with steel ring 4, seal ring 3 is played to firm effect, further strengthen sealing effect.In interior tube head 6 tube walls, be also provided with an inlet opening 12, one end conducting of inlet opening 12 is to the position between interior seal groove 10 and external sealed groove 11, the other end conducting is the outer peripheral surface of interior tube head 6 tube walls extremely, and is provided with plug 5 at inlet opening 12 near one end of interior tube head 6 outer peripheral surfaces.In inlet opening 12, add after hydraulic pressure, if upper flange 2 coordinates not tight with interior tube head 6, or when the poor sealing of seal groove 10,11, hydraulic pressure can leave along with the gap of fitting surface or seal groove 10,11, if sealability is normal, it is stable that hydraulic pressure can keep, and therefore the sealability of technician's butt joint very easily detects.
Above-mentioned seal groove (interior seal groove 10, external sealed groove 11) is by being arranged on upper seal groove 2-1, the 2-2 on upper flange 2 and being arranged on lower seal groove cavity 6-1, the 6-2 composition on interior tube head 6.
The diameter of upper flange 2 endoporus can equate (as accompanying drawing 1) with the diameter of interior tube head 6 inner chambers, can certainly be unequal (because of other parts except inside diameter as shown in Figure 1, therefore separately do not make accompanying drawing), to meet the docking of different tube diameters pipeline or to play the effect such as increase income and decrease expenditure.
When use, first by upper flange 2 and main pipeline welding, interior tube head 6 and the movable pipeline welding in downstream, then rotating rotary process 7 orchids aligns the flange hole of its flange hole and upper flange 2, and by bolt 9, nut 1 etc., upper flange 2 and rotary flange 7 are connected and fixed, thereby fix interior tube head 6, completed the connection work of the movable pipeline of main pipeline and downstream.
After docking, extract plug 5, to the liquid of exerting pressure in inlet opening 12, if stability hydraulic illustrates that joint tighness is good; If joint tighness is bad, pressure liquid can permeate with joint upper flange 2 and fitting surface gap and seal groove 10,11 gaps of interior tube head 6, and hydraulic pressure leaves thereupon.Those skilled in the art can judge the sealability of joint by said process, without by other sealing detection instruments.
Embodiment 2
Please refer to Fig. 2, the structural representation of the another kind of embodiment of the loose flange joint that Fig. 2 provides for the utility model, the present embodiment and embodiment's 1 loose flange joint structure is basic identical, unique difference is, inlet opening 12 in the present embodiment is located on the tube wall of upper flange 2, still conducting is to the position between interior seal groove 10 and external sealed groove 11 in inlet opening 12 one end, and the other end conducting is to the outer peripheral surface of upper flange 2.Those skilled in the art can be according to the technological scheme that need to select embodiment 1 or 2 of practice of construction operation.
Above loose flange joint provided by the utility model is described in detail.Applied specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation is just for helping to understand core concept of the present utility model.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.

Claims (7)

1. a loose flange joint, it is characterized in that, comprise upper flange, interior tube head and rotary flange, the endoporus of described upper flange and the inner chamber of described interior tube head are conducted, described rotary flange is sheathed on described interior tube head outside, and described rotary flange is fixedly connected with described upper flange; Fitting surface between described upper flange and described interior tube head is provided with two seal grooves, in described seal groove, be provided with seal ring, on described loose flange joint, be also provided with inlet opening, described fitting surface between one end conducting to two of described inlet opening described seal groove, the other end conducting is to described loose flange joint outside.
2. loose flange joint according to claim 1, is characterized in that, one end that described inlet opening is positioned at described loose flange joint outside is provided with plug.
3. loose flange joint according to claim 1 and 2, it is characterized in that, described inlet opening is located on described interior tube head, the described fitting surface between one end conducting to two of described inlet opening described seal groove, and the other end conducting is to the outer peripheral surface of described interior tube head.
4. loose flange joint according to claim 1 and 2, it is characterized in that, described inlet opening is located on described upper flange, the described fitting surface between one end conducting to two of described inlet opening described seal groove, and the other end conducting is to the outer peripheral surface of described upper flange.
5. loose flange joint according to claim 1, is characterized in that, described seal groove is made up of upper seal groove and lower seal groove cavity, and described upper seal groove is located on described upper flange, and described lower seal groove cavity is located on interior tube head.
6. loose flange joint according to claim 1, is characterized in that, described seal ring is with the seal ring of steel ring or soft seal ring.
7. loose flange joint according to claim 1, is characterized in that, the diameter of bore of described upper flange is identical with the intracavity diameter of described interior tube head, or unequal.
CN201420169967.8U 2014-04-09 2014-04-09 Movable flange joint Active CN203823294U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420169967.8U CN203823294U (en) 2014-04-09 2014-04-09 Movable flange joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420169967.8U CN203823294U (en) 2014-04-09 2014-04-09 Movable flange joint

Publications (1)

Publication Number Publication Date
CN203823294U true CN203823294U (en) 2014-09-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420169967.8U Active CN203823294U (en) 2014-04-09 2014-04-09 Movable flange joint

Country Status (1)

Country Link
CN (1) CN203823294U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105114349A (en) * 2015-08-17 2015-12-02 南方泵业股份有限公司 Movable flange structure of centrifugal pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105114349A (en) * 2015-08-17 2015-12-02 南方泵业股份有限公司 Movable flange structure of centrifugal pump

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