CN212428633U

CN212428633U - Large-specification high-pressure movable elbow structure

Info

Publication number: CN212428633U
Application number: CN202021166454.3U
Authority: CN
Inventors: 任光辉; 黄金领; 王新明; 张树林; 许世朋
Original assignee: Yantai Jereh Petroleum Equipment and Technologies Co Ltd
Current assignee: Yantai Jereh Petroleum Equipment and Technologies Co Ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-01-29
Anticipated expiration: 2030-06-22

Abstract

The utility model discloses a large-scale high-pressure movable elbow structure, which comprises a connector, an elbow and a hinge assembly, wherein the connector is connected with the elbow and the elbow are connected with the elbow through the hinge assembly, and the connector is used for connecting with upstream and downstream equipment; articulated subassembly includes sealing mechanism, rotating member and clamp, sealing mechanism be used for between connector and the elbow sealing connection between elbow and the elbow, the clamp be used for between connector and the elbow be connected between elbow and the elbow fixed, be connected through the rotating member between clamp and connector or between clamp and elbow, the rotating member is antifriction bearing or slide bearing. Has the advantages that: the shale gas high-pressure and large-displacement combined type shale gas production line has the advantages of being large in drift diameter, flexible in connection, small in size, light in weight, diversified in forming mode, capable of meeting operation requirements of high pressure and large displacement of shale gas, greatly reducing investment cost of operation equipment, optimizing field layout, and being flexible in connection with upstream and downstream equipment.

Description

Large-specification high-pressure movable elbow structure

Technical Field

The utility model relates to a manifold connects technical field, concretely relates to big specification high pressure activity elbow structure.

Background

The original movable elbow structure is generally designed with a plurality of grooves, and a certain number of rolling bodies are arranged in the grooves, so that the joints at two ends rotate relatively around the axis; the rolling bodies in each groove are installed from respective installation holes, and each installation hole is provided with a plug and a check ring to prevent the rolling bodies from scattering in the rotating process. The structure for realizing the rotation function has large volume, complex structure and difficult assembly, has high requirement on the length of a straight section in the elbow structure, and is suitable for the movable elbow with small specification. When the specification is increased, the structure which adopts the rolling body to realize the rotation function is not suitable any more because the forming mode of the elbow structure is limited and the volume requirement is limited.

Along with the rise of shale gas operation in domestic and foreign oil and gas fields, the requirements of high pressure, large displacement and continuous operation on fracturing equipment are more and more strict, in order to meet the requirements of shale gas operation, electrically-driven fracturing is gradually started and applied, the displacement of a single pump is increased suddenly, a large-drift-diameter pipe manifold connected with a flange is also transported, in order to compensate the distance difference between large-drift-diameter pipe manifold sleds, realize flexible connection between pipe manifold sleds with different heights and distances and avoid huge impact and vibration caused by rigid pipeline connection, so that the early damage of pipe manifold parts is caused, a flexible connecting device needs to be developed and is used for the connection between the large-drift-diameter pipe manifold sleds and well head pipe manifolds.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects of the prior art, the utility model provides a large-specification high-pressure movable elbow structure, which is flexible, quick, simple and convenient in rotation connection, is not limited by the pipe diameter and the forming mode of the elbow structure, so that the connector and the elbow can be provided with larger drift diameter, the wall thickness of the connector and the elbow can be flexibly arranged, the large-specification high-pressure movable elbow structure has small volume and diversified forming mode, meets the operation requirements of shale gas high pressure and large displacement, greatly reduces the investment cost of operation equipment, and optimizes the field layout; the end parts are connected by adopting flanges in API 6A standard, the traditional hammering union connection is replaced, the connection is more reliable, and the safety of field operation is improved; in addition, the hinged parts of the large-specification movable elbows are connected by the hoops, so that the large-specification movable elbows can complete rotation while achieving sealing performance, and flexible connection among large-specification manifolds is achieved.

The purpose of the utility model is achieved through the following technical measures: a large-size high-pressure movable elbow structure comprises a connector, an elbow and a hinge assembly, wherein the connector and the elbow, the elbow and the elbow are connected through the hinge assembly, and the connector is used for being connected with upstream equipment and downstream equipment; articulated subassembly includes sealing mechanism, rotating member and clamp, sealing mechanism be used for between connector and the elbow sealing connection between elbow and the elbow, the clamp be used for between connector and the elbow be connected between elbow and the elbow fixed, be connected through the rotating member between clamp and connector or between clamp and elbow, the rotating member is antifriction bearing or slide bearing.

Furthermore, according to the actual use needs, connect different quantity the connector and elbow.

Further, sealing mechanism includes packing and sealed skeleton, and the both ends of sealed skeleton stretch into respectively in adjacent connector and the elbow or in two adjacent elbows packing is filled into in the counter bore of connector and elbow, and sealed skeleton is used for compressing tightly the packing.

Furthermore, when the packing is pressed by the sealing framework, the middle position of the sealing framework axially extends to form a supporting block, the hinge assembly comprises a supporting ring, and the supporting block and the supporting ring are arranged between two adjacent connecting end surfaces of the connector and the elbow or between two adjacent connecting end surfaces of the elbow and the elbow.

Furthermore, an annular groove is formed in the inner wall of the clamp, one end of the support ring is in contact with the support block, and the other end of the support ring is in contact with the annular groove.

Further, the clamp inner wall is equipped with interior conical surface, interior conical surface is 2, all is equipped with the external conical surface on connector tip outer wall and elbow tip outer wall, works as when the connector is connected with the elbow, the interior conical surface of clamp uses with the external conical surface cooperation of connector and elbow respectively, when the elbow is connected with the elbow, the interior conical surface of clamp uses with the external conical surface cooperation of two elbows respectively.

And furthermore, a rotating part is arranged between the hoop inner conical surface and the connector outer conical surface, and a rotating part is arranged between the hoop inner conical surface and the elbow outer conical surface.

Further, a gap is formed between the clamp and the elbow.

Further, the clearance is less than or equal to 1 millimeter.

Further, the clamp adopts split type structure, the clamp adopts round pin axle location to connect, the clamp adopts the bolt-up.

Further, adopt sealing connection between clamp and the connector, adopt sealing connection between clamp and the elbow.

Further, the end of the connector is connected with upstream and downstream equipment by adopting an API flange.

Further, be equipped with the oiling mouth on the clamp, the oiling mouth is used for the lubrication of mutual rotation between connector and the elbow or between two elbows.

Further, the elbow is a two-way joint or a three-way joint or a four-way joint or a Y-shaped three-way joint or a manifold three-way joint.

Furthermore, the elbow, the rotating part and the hoop are all made of wear-resistant materials.

Compared with the prior art, the beneficial effects of the utility model are that: the large-size high-pressure movable elbow structure is small in size and diversified in forming mode, meets the operation requirements of high pressure and large discharge capacity of shale gas, greatly reduces the investment cost of operation equipment, and optimizes the field layout; the end parts are connected by adopting flanges in API 6A standard, the traditional hammering union connection is replaced, the connection is more reliable, and the safety of field operation is improved; in addition, the hinged parts of the large-specification movable elbows are connected by the hoops, so that the large-specification movable elbows can complete rotation while achieving sealing performance, and flexible connection among large-specification manifolds is achieved. In the working process, the free rotation can relieve the vibration generated in the process of conveying high-pressure and high-speed fluid by the pipeline and release the stress.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a structural schematic diagram of a large-specification high-pressure movable elbow structure.

Fig. 2 is an enlarged view of the hinge assembly of fig. 1.

Figure 3 is a schematic view of another embodiment of a large-scale high-pressure movable elbow structure.

Fig. 4 is a schematic structural view of the sealing frame.

The connecting structure comprises a connector 1, an elbow 2, a hinge assembly 3, a sealing ring 4, a rotating part 5, a support ring 6, a pin shaft 7, a hoop 8, a bolt 9, a sealing framework 10, a packing 11 and an end part 12.

Detailed Description

As shown in fig. 1 to 4, the large-size high-pressure movable elbow structure comprises a connector 1, an elbow 2 and a hinge assembly 3, wherein the connector 1 is connected with the elbow 2, the elbow 2 is connected with the elbow 2 through the hinge assembly 3, and the connector 1 is used for connecting with upstream and downstream equipment; articulated subassembly 3 includes sealing mechanism, swivel part 5 and clamp 8, sealing mechanism be used for between connector 1 and the elbow 2 sealing connection between elbow 2 and the elbow 2, clamp 8 be used for between connector 1 and the elbow 2 the connection between elbow 2 and the elbow 2 is fixed, is connected through swivel part 5 between clamp 8 and connector 1 or between clamp 8 and the elbow 2, and this swivel part 5 deformable design is the antifriction bearing or the slide bearing of various forms to reduce the friction resistance of activity elbow 2 rotation in-process various forms. Realize through sealing mechanism between two adjacent connectors 1 and elbow 2 sealing connection between elbow 2 and the elbow 2 realizes coaxial rotation through support ring 6 and sealed skeleton 10, through the interior conical surface, the cooperation of outer conical surface and rotating member 5 is used and is realized better relative rotation, realizes fixed connection through clamp 8. Big specification high pressure activity elbow structure passes through the flexibility of articulated components 3, it is swift, and is simple, convenient swivelling joint, make connector 1 and elbow 2 can set up bigger latus rectum, the wall thickness of connector 1 and elbow 2 also can set up in a flexible way, this big specification high pressure activity elbow structure is small, the shaping mode is diversified, satisfy shale gas high pressure, the operation demand of big discharge capacity, greatly reduced operation equipment input cost, optimize field layout, realize the flexonics between the big specification manifold. The connecting head 1 can be connected with upstream or downstream equipment more flexibly and more quickly by rotating relative to the elbow 2, and the elbow 2 can relieve the vibration generated in the process of conveying high-pressure and high-speed fluid by the pipeline by freely rotating relative to the adjacent connecting head 1 or between two elbows 2, so that the stress is released.

According to the actual use needs, connect different quantity the connector 1 with elbow 2. In the technical scheme, the connectors 1 are respectively arranged at two ends of the large-specification high-pressure movable elbow structure, different numbers of elbows 2 are connected between the two connectors 1 according to actual needs, after the connectors are normally connected, each elbow 2 in the large-specification high-pressure movable elbow structure can rotate relatively under the auxiliary action of the rotating piece 5, different layouts and different shapes can be formed by combining the elbows 2 in different numbers, and the

connectors

1 and 3 in the attached drawing are only two embodiments.

In the technical scheme, the hinge assembly 3 is an important mechanism of the large-specification high-pressure movable elbow structure, the hinge part can freely rotate around the central axis for 360 degrees, the change of the connecting direction of the manifolds is realized, various manifold form connections can be realized in different number of combination forms, and in the working process, the free rotation can relieve the vibration generated in the process of conveying high-pressure and high-speed fluid by the pipeline and release stress.

Sealing mechanism includes packing 11 and sealed skeleton 10, and the both ends of sealed skeleton 10 stretch into respectively in adjacent connector 1 and elbow 2 or in two adjacent elbows 2 packing 11 is filled into in the counter bore of connector 1 and elbow 2, and sealed skeleton 10 is used for compressing tightly packing 11. Packing 11 is the elastic sealing member, can prevent the inside medium of latus rectum of big specification high pressure activity elbow structure from leaking. After the sealing framework 10 is assembled and fastened, the packing 11 is compressed, so that sealing between the adjacent connectors 1 and the adjacent elbows 2 and sealing between the adjacent two elbows 2 are realized, guiding and positioning are realized for the adjacent connectors 1 and the adjacent elbows 2 or the adjacent two elbows 2, and coaxial installation and coaxial rotation are guaranteed.

When the sealing framework 10 compresses the packing 11, the middle position of the sealing framework 10 extends axially to form a supporting block, the hinge assembly 3 comprises a supporting ring 6, and the supporting block and the supporting ring 6 are arranged between two connecting end surfaces of the adjacent connector 1 and the adjacent elbow 2 or between two connecting end surfaces of the adjacent elbow 2 and the adjacent elbow 2. The supporting block and the supporting ring 6 ensure that the adjacent connector 1 and the adjacent elbow 2 and elbow 2 rotate coaxially when rotating.

Establish the ring channel on the 8 inner walls of clamp, the one end and the supporting shoe contact of support ring 6, the other end and the ring channel contact of support ring 6 and support ring 6 are positioned in the ring channel of clamp 8, for two elbows 2 and sealed skeleton 10, or for connector 1, elbow 2 and sealed skeleton 10, provide support and location, divide the clearance equally.

The 8 inner walls of clamp are equipped with interior conical surface, interior conical surface is 2, 2 interior conical surface symmetric distributions, and interior conical surface can design for 25 or other more suitable angles. All be equipped with the external conical surface on the 12 outer walls of connector 1 tip and on the 12 outer walls of elbow 2 tip, work as when connector 1 is connected with elbow 2, the internal conical surface of clamp 8 uses with the external conical surface cooperation of connector 1 and elbow 2 respectively, and when elbow 2 is connected with elbow 2, the internal conical surface of clamp 8 uses with the external conical surface cooperation of two elbows 2 respectively.

Establish rotating member 5 between 8 interior cones of clamp and the 1 outer conical surface of connector establish rotating member 5 between 8 interior cones of clamp and the 2 outer conical surfaces of elbow.

And a gap is arranged between the hoop 8 and the elbow 2. The clearance is less than or equal to 1 mm, and the elbow 2 can freely rotate around the central axis of the clamp 8 by 360 degrees.

The clamp 8 adopts split type structure, the clamp 8 adopts 7 location connections of round pin axle, like the cylindric lock, realizes the location through the cylindric lock, pairs processing and use for split type clamp 8 installation is more swift.

The clamp 8 is fastened by a bolt 9.

Adopt sealing connection between clamp 8 and the connector 1, adopt sealing connection between clamp 8 and the elbow 2. During normal use, the annular seal groove has been seted up respectively at the inner wall both ends of clamp 8, and it has sealing washer 4 to fill in the annular seal groove, like O type circle, prevents that outside impurity or dust from getting into articulated subassembly 3.

The end 12 of the connector 1 is connected to upstream and downstream equipment using API flanges. The API flange has universality and interchangeability and can be directly connected with other similar equipment for oil and gas fields in a seamless mode.

Be equipped with the oiling mouth on the clamp 8, the oiling mouth is used for the lubrication of mutual rotation between connector 1 and elbow 2 or between two elbows 2, reduces the rotation resistance. Oil passages can be arranged on the parts such as the clamping hoop 8, the rotating part 5, the support ring 6, the elbow 2 and the like, and certainly, one oil passage can meet the requirement of rotary lubrication on the parts which are connected adjacently and rotate mutually.

In order to be suitable for different occasions, the elbow 2 is a two-way joint or a three-way joint or a four-way joint or a Y-shaped three-way joint or a manifold three-way joint, so that the large-size high-pressure movable elbow 2 has wider applicability.

When the activity elbow 2 is rotatory, relative rotary motion takes place between clamp 8, rotating member 5, the elbow 2, for the life who improves the product as far as possible, elbow 2, rotating member 5 and clamp 8 all adopt wear-resisting material.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A big specification high pressure activity elbow structure which characterized in that: the connector is used for connecting with upstream and downstream equipment; articulated subassembly includes sealing mechanism, rotating member and clamp, sealing mechanism be used for between connector and the elbow sealing connection between elbow and the elbow, the clamp be used for between connector and the elbow be connected between elbow and the elbow fixed, be connected through the rotating member between clamp and connector or between clamp and elbow, the rotating member is antifriction bearing or slide bearing.

2. The large format high pressure active elbow structure of claim 1, wherein: according to actual use needs, connect different quantity the connector and elbow.

3. The large format high pressure moving elbow structure of claim 1 or 2, wherein: sealing mechanism includes packing and sealed skeleton, and the both ends of sealed skeleton stretch into respectively in adjacent connector and the elbow or in two adjacent elbows pack is filled into in the counter bore of connector and elbow, sealed skeleton is used for compressing tightly the packing.

4. The large format high pressure active elbow structure of claim 3, wherein: when the packing is compressed by the sealing framework, the middle position of the sealing framework extends axially to form a supporting block, the hinge assembly comprises a supporting ring, and the supporting block and the supporting ring are arranged between two adjacent connecting end surfaces of the connector and the elbow or between two adjacent connecting end surfaces of the elbow and the elbow.

5. The large format high pressure active elbow structure of claim 4, wherein: the inner wall of the clamp is provided with an annular groove, one end of the support ring is in contact with the support block, and the other end of the support ring is in contact with the annular groove.

6. The large format high pressure active elbow structure of claim 1, wherein: the clamp inner wall is equipped with interior conical surface, interior conical surface is 2, all is equipped with the external conical surface on connector tip outer wall and elbow tip outer wall, works as when the connector is connected with the elbow, the interior conical surface of clamp uses with the external conical surface cooperation of connector and elbow respectively, when the elbow is connected with the elbow, the interior conical surface of clamp uses with the external conical surface cooperation of two elbows respectively.

7. The large format high pressure active elbow structure of claim 6, wherein: establish the rotating part between clamp internal cone and the connector external cone establish the rotating part between clamp internal cone and the elbow external cone.

8. The large format high pressure active elbow structure of claim 1, wherein: and a gap is arranged between the hoop and the elbow.

9. The large format high pressure active elbow structure of claim 8, wherein: the clearance is less than or equal to 1 millimeter.

10. The large format high pressure active elbow structure of claim 1, wherein: the clamp adopts split type structure, the clamp adopts round pin axle location to connect, the clamp adopts the bolt-up.

11. The large format high pressure active elbow structure of claim 1, wherein: adopt sealing connection between clamp and the connector, adopt sealing connection between clamp and the elbow.

12. The large format high pressure active elbow structure of claim 1, wherein: the end of the connector is connected with upstream and downstream equipment by adopting an API flange.

13. The large format high pressure active elbow structure of claim 1, wherein: be equipped with the oiling mouth on the clamp, the oiling mouth is used for the lubrication of mutual rotation between connector and the elbow or between two elbows.

14. The large format high pressure active elbow structure of claim 1, wherein: the elbow is a two-way joint or a three-way joint or a four-way joint or a Y-shaped three-way joint or a manifold three-way joint.

15. The large format high pressure active elbow structure of claim 1, wherein: the elbow, the rotating part and the clamp are all made of wear-resistant materials.