CN215522389U

CN215522389U - Quick interfacing apparatus of compound steel pipe

Info

Publication number: CN215522389U
Application number: CN202120573167.2U
Authority: CN
Inventors: 阮周红; 甘伟家; 高世荣; 甘伟豪
Original assignee: Sichuan Pns Pipeline Co ltd
Current assignee: Sichuan Pns Pipeline Co ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2022-01-14
Anticipated expiration: 2031-03-19

Abstract

The utility model discloses a quick butt joint device for composite steel pipes, which is characterized by comprising a fixed joint (1), a butt joint (10) connected with the fixed joint (1) in a plugging manner, a butt joint sealing ring (3) arranged in the fixed joint (1), a plurality of self-locking mechanisms arranged in the fixed joint (1), and a connecting sealing cover (9) which is sleeved on the butt joint (10) and can move left and right. According to the utility model, the plurality of self-locking mechanisms are arranged in the fixing head, so that the butt joint inserted into the fixing head can be effectively locked; meanwhile, the sealing degree between the fixed joint and the butt joint can be well ensured by matching the butt sealing ring arranged in the fixed joint with the connecting sealing cover arranged on the butt joint; therefore, the utility model can well solve the problems of inconvenient use and poor sealing effect of the flange connector used by the existing composite steel pipe.

Description

Quick interfacing apparatus of compound steel pipe

Technical Field

The utility model relates to the technical field of steel pipe connection, in particular to a composite steel pipe quick butt joint device.

Background

The butt joint of pipelines is a conventional process in pipeline construction, and during construction, different pipelines are usually butted and fixed by matching a hose and a hoop or adopting a flange connector. Wherein, the butt joint of compound steel pipe just adopts flange joint ware more to realize connecting and fixing two compound steel pipes. The flange connector is a detachable connector of a group of combined sealing structure formed by mutually connecting two flanges, a gasket and bolts, the two flanges are firstly split-packaged at the end parts of two composite steel pipes during use, then a plurality of bolts penetrate through holes of the two flanges simultaneously, nuts are sleeved on each screw rod, and finally the nuts are fastened by using a nut fastening tool to lock the nuts, so that the two composite steel pipes are fixedly connected.

However, the structure and the operation condition of the flange connector show that the flange connector used by the existing composite steel pipe has the problems of inconvenient use and poor sealing effect, so that the butt joint efficiency of the composite steel pipe is low, and the accidents of leakage or seepage are easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects and provide the composite steel pipe quick butt joint device which can realize quick butt joint of two composite steel pipes and can also well improve the butt joint sealing effect of the two composite steel pipes.

The purpose of the utility model is realized by the following technical scheme: a composite steel pipe rapid butt joint device comprises a fixed joint, a butt joint connected with the fixed joint in a plugging and pulling manner, a butt joint sealing ring arranged in the fixed joint, a plurality of self-locking mechanisms arranged in the fixed joint, and a connecting sealing cover sleeved on the butt joint and capable of moving left and right; the butt joint is inserted into the fixed joint and then connected with the sealing cover to be connected with the fixed joint; a lock ring is arranged on the butt joint; the self-locking mechanism is movably connected with the locking ring; the plurality of self-locking mechanisms are symmetrically arranged in the fixing head.

Furthermore, a plurality of mounting cavities and sliding grooves which are used for mounting the self-locking mechanisms and are the same as the self-locking mechanisms in number are respectively arranged on the fixing heads; a traction hole is formed in the upper cavity wall of the mounting cavity; the lower cavity wall of the installation cavity is communicated with the upper sliding wall of the sliding groove through the clamping through hole, an opening which is the same as the caliber of the clamping through hole and is symmetrical to the clamping through hole is formed in the lower sliding wall of the sliding groove, and a strip-shaped through hole is further formed in the lower sliding wall of the sliding groove.

The fixed head is also provided with a butt joint cavity, and a sealing groove is arranged in the butt joint cavity; the butt seal ring is arranged in the seal groove; the seal groove is communicated with the butt joint.

Still further, the self-locking mechanism comprises a locking device, a locking device and a traction device; the locking device is arranged in the mounting cavity; the locking device is arranged in the sliding chute and is movably connected with the locking device; and the traction device penetrates through the traction hole and then is connected with the locking device.

The locking device comprises a locking sliding block and a recoil spring, wherein one end of the locking sliding block is arranged in the sliding chute, one end of the locking sliding block extends out of the strip-shaped through hole on the lower sliding wall of the sliding chute, and one end of the recoil spring is sleeved on one end of the locking sliding block, which is positioned in the sliding chute; the other end of the recoil spring is fixed on the side wall of the sliding chute; the locking sliding block is movably connected with the locking device; the lock ring is in contact with the capture slide.

Furthermore, the locking device comprises a lock head vertically arranged in the mounting cavity and a compression spring, wherein one end of the compression spring is arranged at the upper end of the lock head, and the other end of the compression spring is arranged at the top of the mounting cavity; the locking slide block is movably connected with the lock head; the lock ring is movably connected with the lock head.

The traction device comprises a traction rope and a traction ring, wherein one end of the traction rope extends into the traction hole and then is connected with the lock head, the other end of the traction rope is positioned outside the traction hole, and the traction ring is fixed at one end, positioned outside the traction hole, of the traction rope.

An auxiliary cover for sealing the mounting cavity and the sliding groove is arranged on the fixing head; the fixed head is in threaded connection with the connecting sealing cover.

The fixed head is provided with a pipeline connecting cavity which is fixedly integrated with the fixed head and is communicated with the fixed head; the pipeline connecting cavity and the butt joint are internally provided with pipeline fixing cavities; and a sealing gasket is arranged in the pipeline fixing cavity.

The butt joint is in threaded connection with the connecting sealing cover; and the butt joint is provided with a limiting cover for preventing the connecting sealing cover from sliding off.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

(1) according to the utility model, the plurality of self-locking mechanisms are arranged in the fixing head, so that the butt joint inserted into the fixing head can be effectively locked; meanwhile, the sealing degree between the fixed joint and the butt joint can be well ensured by matching the butt sealing ring arranged in the fixed joint with the connecting sealing cover arranged on the butt joint; therefore, the utility model can well solve the problems of inconvenient use and poor sealing effect of the flange connector used by the existing composite steel pipe.

(2) The utility model can further improve the butt joint sealing effect of the composite steel pipe by respectively arranging the sealing gaskets in the pipeline connecting cavity and the butt joint.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a state diagram of the present invention.

Fig. 3 is a schematic structural diagram of the fixing head of the present invention.

Fig. 4 is an enlarged view of a portion a of fig. 1 according to the present invention.

Fig. 5 is a schematic structural view of the sub-cap of the present invention.

Fig. 6 is a schematic structural view of the position-limiting cover of the present invention.

The reference numbers in the drawings are:

1-fixed head, 2-pipeline connection cavity, 3-butt joint sealing ring, 4-recoil spring, 5-locking slide block, 6-tapered end, 7-compression spring, 8-auxiliary cover, 9-connection sealing cover, 10-butt joint, 11-limiting cover, 12-sealing gasket, 13-pipeline fixing cavity, 14-locking ring, 15-traction ring, 16-traction rope, 17-traction hole, 18-butt joint cavity, 19-sealing groove, 20-sliding groove, 21-clamping through hole, 22-installation cavity and 23-strip-shaped through hole.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.

Examples

As shown in fig. 1 to 6, the present invention provides a rapid butt joint device for composite steel pipes, which includes a fixing head 1, a butt joint 10, a butt joint sealing ring 3, a self-locking mechanism, and a connecting sealing cover 9. Specifically, the butt joint 10 is connected with the fixed joint 1 in a plugging manner. The butt sealing ring 3 is arranged in the fixed head 1, in this embodiment, the butt sealing ring 3 is preferably implemented by a rubber ring with a tapered ring opening, and the butt sealing ring 3 is used for sealing the connection between the butt joint 10 and the fixed head 1 to prevent the leakage or seepage of substances in the composite steel pipe. The contact end of the butt joint 10 and the butt sealing ring 3 is set to be in a shape matched with the ring opening of the butt sealing ring 3. The self-locking mechanism is arranged in the fixed head 1, and the number of the self-locking mechanisms is multiple. In this embodiment, the number of the self-locking mechanisms is preferably set to four, and the four self-locking mechanisms are symmetrically arranged in the fixing head 1 in a cross shape. The number of the self-locking mechanisms can be increased or decreased according to actual conditions. The connecting sealing cover 9 is sleeved on the butt joint 10 and can move left and right. The butt joint 10 is inserted into the fixed joint 1 and then connected with the sealing cover 9 to be connected with the fixed joint 1, and the fixed joint 1 is in threaded connection with the connecting sealing cover 9.

As shown in fig. 1, a locking ring 14 is provided on the docking head 10, and the locking ring 14 surrounds the front end of the docking head 10 and is fixed with the docking head 10. The self-locking mechanism is movably connected with the lock ring 14. Specifically, the position set by the locking ring 14 is based on that after the butt joint 10 is inserted into the fixing head 1, the self-locking mechanism can be firmly hinged with the locking ring 14, so that the butt joint 10 is firmly fixed on the butt sealing ring 3. When the butt joint 10 is in threaded connection with the connecting sealing cover 9, after the butt joint 10 is inserted into the fixed head 1 and the locking ring 14 is locked by the self-locking mechanism, the connecting sealing cover 9 is rotated to enable the connecting sealing cover 9 to be in threaded connection with the fixed head 1. When the sealing cover 9 is fastened on the fixed head 1, the sealing cover 9 not only can realize the butt joint of the butt joint 10 and the fixed head 1 to form sealing, but also can further effectively fix the butt joint 10, so that the butt joint of the butt joint 10 and the fixed head 1 is firmer. In order to prevent the connecting seal cover 9 from falling off the butt joint 10, a limit cover 11 for preventing the connecting seal cover 9 from sliding off is arranged on the butt joint 10, the limit cover 11 is fixed on the port wall of the butt joint 10 by a screw, and the diameter of the limit cover 11 is larger than that of the butt joint 10.

In specific implementation, in order to better implement the present invention, as shown in fig. 3, a plurality of mounting cavities 22 and chutes 20 for mounting the self-locking mechanisms are respectively provided on the fixing head 1, and the number of the mounting cavities 22 and chutes 20 is the same as that of the self-locking mechanisms, and in this embodiment, the number of the mounting cavities 22 and chutes 20 is also set to four. The number of the mounting cavities 22 and the chutes 20 can be increased or decreased according to actual conditions, that is, the number of the mounting cavities 22 and the chutes 20 is always consistent with the number of the self-locking mechanisms. The upper cavity wall of the installation cavity 22 is provided with a traction hole 17, and the lower cavity wall of the installation cavity 22 is communicated with the upper sliding wall of the sliding chute 20 through a clamping through hole 21. The lower sliding wall of the sliding chute 20 is provided with an opening with the same caliber as the clamping through hole 21 and symmetrical to the clamping through hole 21, and the lower sliding wall of the sliding chute 20 is also provided with a strip-shaped through hole 23. The fixed head 1 is also provided with a butt joint cavity 18, the cavity diameter of the butt joint cavity 18 is slightly larger than the diameter of the butt joint 10, so that the joint 10 can be tightly attached to the inner cavity wall of the butt joint cavity 18 for plugging and unplugging. A sealing groove 19 is arranged in the butt joint cavity 18, and the butt joint sealing ring 3 is arranged in the sealing groove 19. The seal groove 19 communicates with the docking head 10. Specifically, the sealing groove 19 is communicated with the butt joint 10 through a preset inner hole of the fixed joint 1.

As shown in fig. 1, a sub-cap 8 for closing the mounting cavity 22 and the slide groove 20 is provided on the fixing head 1, and as shown in fig. 5, the sub-cap 8 is fixed to the fixing head 1 by screws. The fixed head 1 is also provided with a pipeline connecting cavity 2 which is fixedly integrated with the fixed head 1 and communicated with the fixed head. The pipeline connecting cavity 2 and the butt joint 10 are respectively used for installing two composite steel pipes to be butted. In order to enable the composite steel pipe to be better installed on the pipeline connecting cavity 2 and the butt joint 10, pipeline fixing cavities 13 are arranged in the pipeline connecting cavity 2 and the butt joint 10, and meanwhile, in order to ensure the connection sealing performance of the composite steel pipe and the pipeline fixing cavities 13, sealing gaskets 12 are arranged in the pipeline fixing cavities 13. The limit cap 11 is installed on the mouth wall of the pipe fixing chamber 13 of the docking head 10. As shown in fig. 6, a through hole having the same diameter as the bore diameter of the pipe fixing cavity 13 is formed in the stopper cover 11. Specifically, as shown in fig. 2, one of the two composite steel pipes to be butted is installed in the pipe fixing cavity 13 of the butt joint 10 after passing through the through hole of the limiting cover 11 and is in tight contact with the sealing gasket 12, and the other composite steel pipe is installed in the pipe fixing cavity 13 of the pipe connecting cavity 2 and is in tight contact with the sealing gasket 12. The outer wall of the composite steel pipe and the inner wall of the pipeline fixing cavity 13 are fixed in the embodiment by means of threaded connection.

Furthermore, the self-locking mechanism comprises a locking device, a locking device and a traction device. Specifically, the locking device is mounted in the mounting cavity 22. The locking device is arranged in the sliding groove 20 and is movably connected with the locking device. The traction device passes through the traction hole 17 and then is connected with the locking device.

As shown in fig. 1, the locking device includes a locking slider 5 and a recoil spring 4. Specifically, one end of the locking slide block 5 is installed in the slide groove 20, and the other end extends out of the strip-shaped through hole 23 on the lower slide wall of the slide groove 20. In this embodiment, the locking slide 5 is preferably implemented by a "T" shaped slide, that is, the transverse end of the locking slide 5 is installed in the sliding groove 20, the vertical end is installed in the through-hole 23, and the locking slide 5 can slide horizontally in the sliding groove 20 and the through-hole 23. One end of the recoil spring 4 is sleeved on one end of the locking slide block 5 in the sliding groove 20, and the other end of the recoil spring 4 is fixed on the side wall of the sliding groove 20. The locking slide block 5 is movably connected with the locking device, and the locking ring 14 is also contacted with the locking slide block 5.

As shown in fig. 1, the capture device includes a locking head 6 and a compression spring 7. Specifically, the lock head 6 is vertically arranged in the installation cavity 22, and in this embodiment, the lock head 6 is preferably realized by a lock head with a limiting block preset at the upper end. One end of the compression spring 7 is arranged at the upper end of the lock head 6, and the other end is arranged at the top of the mounting cavity 22. The locking slide block 5 is movably connected with the lock head 6, namely the locking slide block 5 is transversely inserted below the lock head 6 and is movably connected with the lock head 6. The locking ring 14 is movably connected with the locking head 6. When the butt joint device is in a butt joint state, the locking slide block 5 is transversely inserted below the lock head 6, and the whole lock head 6 is still in the installation cavity 22. After two composite steel pipes to be butted are respectively fixed in a butt joint 10 and a pipeline fixing cavity 13 of a pipeline connecting cavity 2, when the butt joint 10 is inserted into a butt joint cavity 18 of a fixing head 1, a locking ring 14 of the butt joint 10 is in contact with a vertical arm of a locking slide block 5, the locking slide block 5 moves towards the inside of the fixing head 1 under the pushing of the locking ring 14, after the butt joint 10 is in tight contact with a butt joint sealing ring 3, at the moment, a lock head 6 is separated from the locking slide block 5 and moves downwards under the action of a compression spring 7, the lock head 6 passes through a clamping through hole 21 and an opening of the lower groove wall of a sliding groove 20 and then is in tight contact with a vertical ring surface of the locking ring 14, and the butt joint 10 is fixed in the fixing head 1.

As shown in fig. 4, the pulling device comprises a pulling rope 16 and a pulling loop 15. Specifically, one end of the hauling rope 16 extends into the hauling hole 17 and then is connected with the lock head 6, and the other end of the hauling rope 16 is positioned outside the hauling hole 17. The pulling rope 16 passes through the compression spring 7 and is fixed on a preset mounting buckle of the lock head 6. In the initial state, the pull rope 16 is retracted in the compression spring 7, and the pull rope 16 is perpendicular to the compression spring 7 after the lock head 6 is ejected. The pull ring 15 is fixed to the end of the pull cord 16 outside the pull hole 17. When the butt joint 10 is required to be separated from the fixing head 1, the traction rings 15 in the four self-locking devices are held at the same time, the traction rope 16 is pulled up, and the traction rope 16 drives the lock head 6 to move upwards until the lock head 6 is separated from the lock ring 14. The abutment 10 can be removed from the fixture 1. At this moment, the locking slide block 5 slides to the position of the clamping through hole 21 again under the action of the recoil spring 4, namely, the locking slide block 5 is transversely inserted below the lock head 6 again and is in close contact with the lock head 6, and the four self-locking mechanisms return to the initial state.

As described above, the present invention can be well implemented.

Claims

1. A quick butt joint device for composite steel pipes is characterized by comprising a fixed joint (1), a butt joint (10) connected with the fixed joint (1) in a plugging and pulling manner, a butt joint sealing ring (3) arranged in the fixed joint (1), a plurality of self-locking mechanisms arranged in the fixed joint (1), and a connecting sealing cover (9) which is sleeved on the butt joint (10) and can move left and right; the butt joint (10) is inserted into the fixed joint (1) and then is connected with the sealing cover (9) to be connected with the fixed joint (1); a lock ring (14) is arranged on the butt joint (10); the self-locking mechanism is movably connected with the locking ring (14); the plurality of self-locking mechanisms are symmetrically arranged in the fixed head (1).

2. The quick butt joint device for composite steel pipes according to claim 1, characterized in that: the fixed head (1) is respectively provided with a plurality of mounting cavities (22) and sliding chutes (20) which are used for mounting the self-locking mechanisms and have the same number as the self-locking mechanisms; a traction hole (17) is formed in the upper cavity wall of the mounting cavity (22); the lower chamber wall of installation cavity (22) and the last slide wall of spout (20) are through screens through-hole (21) intercommunication between, set up the trompil the same with screens through-hole (21) bore and symmetrical with screens through-hole (21) on the slide wall down of spout (20), still be provided with bar through-hole (23) on the slide wall down of this spout (20).

3. The quick butt joint device for composite steel pipes according to claim 2, characterized in that: the fixed head (1) is also provided with a butt joint cavity (18), and a sealing groove (19) is arranged in the butt joint cavity (18); the butt sealing ring (3) is arranged in the sealing groove (19); the sealing groove (19) is communicated with the butt joint (10).

4. The quick butt joint device for composite steel pipes according to claim 3, characterized in that: the self-locking mechanism comprises a locking device, a locking device and a traction device; the locking device is arranged in the mounting cavity (22); the locking device is arranged in the sliding groove (20) and is movably connected with the locking device; the traction device passes through the traction hole (17) and then is connected with the locking device.

5. The quick butt joint device for composite steel pipes according to claim 4, characterized in that: the locking device comprises a locking sliding block (5) with one end installed in the sliding chute (20) and one end extending out of a strip-shaped through hole (23) on the lower sliding wall of the sliding chute (20), and a recoil spring (4) with one end sleeved on one end of the locking sliding block (5) positioned in the sliding chute (20); the other end of the recoil spring (4) is fixed on the side wall of the sliding chute (20); the locking sliding block (5) is movably connected with the locking device; the locking ring (14) is in contact with the locking slide block (5).

6. The quick butt joint device for composite steel pipes according to claim 5, characterized in that: the locking device comprises a lock head (6) vertically arranged in the mounting cavity (22), and a compression spring (7) with one end arranged at the upper end of the lock head (6) and the other end arranged at the top of the mounting cavity (22); the locking slide block (5) is movably connected with the lock head (6); the lock ring (14) is movably connected with the lock head (6).

7. The quick butt joint device for the composite steel pipes according to claim 6, characterized in that: the traction device comprises a traction rope (16) and a traction ring (15), wherein one end of the traction rope extends into the traction hole (17) and then is connected with the lock head (6), the other end of the traction rope is positioned outside the traction hole (17), and the traction ring (15) is fixed at one end, positioned outside the traction hole (17), of the traction rope (16).

8. The quick butt joint device for composite steel pipes according to any one of claims 1 to 7, characterized in that: an auxiliary cover (8) used for sealing the installation cavity (22) and the sliding groove (20) is arranged on the fixed head (1); the fixed head (1) is in threaded connection with the connecting sealing cover (9).

9. The quick butt joint device for composite steel pipes according to claim 8, characterized in that: the fixed head (1) is provided with a pipeline connecting cavity (2) which is fixed with the fixed head (1) into a whole and is communicated with the fixed head; a pipeline fixing cavity (13) is arranged in each of the pipeline connecting cavity (2) and the butt joint (10); and a sealing gasket (12) is arranged in the pipeline fixing cavity (13).

10. The quick butt joint device for composite steel pipes according to claim 8, characterized in that: the butt joint (10) is in threaded connection with the connecting sealing cover (9); the butt joint (10) is provided with a limiting cover (11) for preventing the connecting sealing cover (9) from sliding off.