Fuel gas pipeline fastening and connecting device

Abstract

The utility model provides a gas pipeline fastening and connecting device which comprises a flange, a connecting pipe, a clamping unit, a clamping head, a first blind hole, a locking ring, a moving ring, a moving block, a spring and a clamping block. According to the utility model, only the flanges need to be welded on the gas pipeline, so that the welding number of the flanges is reduced, and the laying efficiency of the gas pipeline is improved; in the splicing process of the gas pipelines, the flanges only need to be inserted into the bottoms of the first blind holes, then the locking rings are rotated, the flanges can be locked through the clamping blocks, and then splicing of the gas pipelines is achieved; and the work that a plurality of bolts need to be manually aligned and tightened on the flange is eliminated, and the laying efficiency of the gas pipeline is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fastening equipment, in particular to a gas pipeline fastening connection device. Background Art

[0002] During the laying of gas pipelines, the pipelines need to be turned or branches are laid. At this time, elbows or tees are needed to connect two or three pipelines. The current method is generally to weld flanges on the elbows or tees, weld flanges on the pipelines, and then align the flanges and connect them through bolts. In this process, the flanges need to be manually aligned and bolted, which is inconvenient to operate. In addition, for example, when using elbows, four flanges need to be welded, and each set of flanges requires at least four bolts to fix, and some even require eight bolts, so the installation efficiency is low. When installing the tee, six flanges need to be welded, and the number of bolts required also increases, which greatly reduces the efficiency of laying the gas pipeline. Utility Model Content

[0003] The purpose of the utility model is to design a gas pipeline fastening connection device to solve the problems raised by the background technology. To achieve the above purpose, the utility model provides the following technical solutions: including a flange fixed to the pipeline and a clamping unit connected to the end of the connecting pipe, the clamping unit includes a clamping head connected to the connecting pipe, the interior of the clamping head is provided with a first blind hole that matches the flange clearance, the flange is located at the inner bottom of the first blind hole, a locking ring is rotatably connected to the clamping head, a moving ring is threadedly connected to the outer circle of the locking ring, the moving ring is slidably connected to the clamping head, a plurality of moving blocks slidably connected to the clamping head are circumferentially distributed on the moving ring, a clamping block for clamping the flange is connected to the moving block through a spring, the clamping block passes through the side wall of the first blind hole, the clamping block is slidably connected to the moving block and a chamfer is provided on the clamping block.

[0004] Furthermore, a driving chamber is provided inside the clamping head, one end of the locking ring is located inside the driving chamber, the movable ring is located inside the driving chamber, and the clamping head is also provided with a plurality of clamping chambers connected with the first blind hole, the clamping block is located inside the clamping chamber, the clamping chamber is connected with the driving chamber through a connecting hole, and the connecting hole is slidably connected with the movable block.

[0005] Furthermore, a guide post is provided on the moving block located inside the clamping chamber, a through hole is provided on the clamping block to match the guide post with a gap, and a gap is provided between the top of the guide post and the inner wall of the first blind hole.

[0006] Furthermore, the clamping block is embedded in the two side walls of the clamping chamber, and a second blind hole is provided on the clamping block, and the spring is located inside the second blind hole.

[0007] Furthermore, a rubber fastening block is fixedly connected to an end surface of the clamping block away from the chamfer.

[0008] Furthermore, one end of the locking ring is located outside the clamping head, and a locking hole is provided on the locking ring located outside the clamping head.

[0009] Furthermore, the connecting pipe is a right-angle elbow, a three-way pipe or a four-way pipe.

[0010] Furthermore, there are four or eight moving blocks distributed in the circumferential direction.

[0011] Furthermore, a sealing sheet is provided between the first blind hole and the flange.

[0012] Furthermore, the sealing sheet is fixed to the bottom of the first blind hole by glue.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model only needs to weld the flange of the gas pipeline, thereby reducing the number of flange weldings and improving the efficiency of laying the gas pipeline; and in the process of splicing the gas pipeline, it is only necessary to insert the flange into the bottom of the first blind hole, and then rotate the locking ring to enable the clamping block to lock the flange, thereby realizing the splicing of the gas pipeline; the work of manually aligning the flange and tightening multiple bolts is eliminated, thereby improving the efficiency of laying the gas pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial cross-sectional schematic diagram of the utility model.

[0018] Among them: 1. clamping unit; 2. pipeline; 3. connecting pipe; 4. clamping head; 5. locking hole; 6. locking ring; 7. sealing sheet; 8. first blind hole; 9. rubber fastening block; 10. clamping chamber; 11. spring; 12. moving block; 13. connecting hole; 14. driving chamber; 15. moving ring; 16. guide column; 17. through hole; 18. flange; 19. chamfer; 20. second blind hole; 21. clamping block. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0020] Example: Please refer to Figure 1-2 A gas pipeline fastening connection device comprises a flange 18 fixed to a pipeline 2 and a clamping unit 1 connected to an end of a connecting pipe 3. The clamping unit 1 comprises a clamping head 4 connected to the connecting pipe 3. The clamping head 4 is provided with a first blind hole 8 which is clearance-matched with the flange 18. The flange 18 is located at the inner bottom of the first blind hole 8. A locking ring 6 is rotatably connected to the clamping head 4. A moving ring 15 is threadedly connected to the outer circle of the locking ring 6. The moving ring 15 is slidably connected to the clamping head 4. The moving ring 15 is circumferentially distributed with a plurality of The clamping head 4 is slidably connected to a plurality of moving blocks 12, and a clamping block 21 for clamping a flange 18 is connected to the moving block 12 through a spring 11. The clamping block 21 penetrates the side wall of the first blind hole 8, and the clamping block 21 is slidably connected to the moving block 12 and a chamfer 19 is provided on the clamping block 21; wherein, there are four moving blocks 12 distributed circumferentially, and in other embodiments, there may be eight or twelve, etc.; and the rotation connection may be in the form of a bearing connection, and the sliding connection may be in the form of a clearance fit; in addition, the connection The connecting pipe 3 is a right-angle elbow or a three-way pipe or a four-way pipe, and the ends of the connecting pipe 3 are connected to the clamping unit 1. In this embodiment, the right-angle elbow is taken as an example. When the bent gas pipeline 2 needs to be connected, the flange 18 is first welded to the two gas pipelines 2, and then the flange 18 is inserted into the first blind hole 8 of the clamping head 4 installed at the end of the right-angle elbow. When the flange 18 is pushed onto the chamfer 19 of the clamping block 21, the clamping block 21 will move outward along the direction of the diameter of the first blind hole 8. When the flange 18 is pushed onto the first blind hole 8, the clamping block 21 will move outward along the direction of the diameter of the first blind hole 8. When the flange 18 is at the bottom of the hole 8, the clamping block 21 is reset under the action of the spring 11, and then the locking ring 6 is rotated, and the movable ring 15 will move along the axial direction, so that the clamping block 21 clamps the flange 18; therefore, the utility model only needs to weld the flange 18 on the gas pipeline 2, and then push the flange 18 into the bottom of the first blind hole 8, and rotate the locking ring 6, thereby reducing the number of welding of the flange 18, and at the same time eliminating the need for manual alignment of the flange 18 and tightening of multiple bolts, thereby improving the laying efficiency of the gas pipeline 2.

[0021] In this embodiment, a driving chamber 14 is provided inside the clamping head 4, one end of the locking ring 6 is located inside the driving chamber 14, and the moving ring 15 is located inside the driving chamber 14. The clamping head 4 is also provided with a plurality of clamping chambers 10 connected with the first blind hole 8, and the clamping block 21 is located inside the clamping chamber 10. The clamping chamber 10 is connected with the driving chamber 14 through the connecting hole 13, and the connecting hole 13 is slidably connected with the moving block 12. A guide column 16 is provided on the moving block 12 inside the clamping chamber 10, and a guide column 16 is provided on the clamping block 21. There is a through hole 17 that matches the guide column 16 with a clearance, and a clearance is set between the top of the guide column 16 and the inner wall of the first blind hole 8. When the flange 18 moves to the chamfer 19 and continues to move to the bottom of the first blind hole 8, the clamping block 21 will squeeze the spring 11 and move downward along the guide column 16. When the clamping block 21 is completely moved into the clamping chamber 10, the flange 18 continues to move to the bottom of the first blind hole 8. When the flange 18 moves to the bottom of the first blind hole 8, the clamping block 21 is reset under the action of the spring 11. After that, the locking ring 6 is rotated, and the moving ring 15 will move, so that the moving block 12 moves, and then the guide column 16 moves, thereby driving the clamping block 21 to clamp the flange 18; the clamping block 21 is embedded in the two side walls of the clamping chamber 10, and a second blind hole 20 is provided on the clamping block 21, and the spring 11 is located inside the second blind hole 20, making the structure of the utility model more compact; a rubber fastening block 9 is fixedly connected to the end surface of the clamping block 21 away from the chamfer 19, which is convenient for elastic clamping of the flange 18 and improves the device service life; one end of the locking ring 6 is located outside the clamping head 4, and a locking hole 5 is provided on the locking ring 6 located outside the clamping head 4. The staff only needs to insert the rotating column into the locking hole 5 to rotate the locking ring 6 by rotating the rotating column, wherein the locking hole 5 can be an anisotropic hole, such as a triangular hole or a hexagonal hole, which is helpful to prevent outsiders from arbitrarily rotating the locking ring 6; a sealing sheet 7 is provided between the first blind hole 8 and the flange 18, and the sealing sheet 7 is fixed to the bottom of the first blind hole 8 by glue to prevent gas leakage.

[0022] How it works

[0023] When the gas pipeline 2 needs to be spliced, the flange 18 is first welded to the gas pipeline 2, and then the flange 18 is inserted into the first blind hole 8 of the clamping head 4. When the flange 18 is pushed onto the chamfer 19 of the clamping block 21, the clamping block 21 will move outward along the diameter direction of the first blind hole 8. When the flange 18 is pushed to the bottom of the first blind hole 8, the clamping block 21 is reset under the action of the spring 11, and then the locking ring 6 is rotated, the moving ring 15 will move, thereby moving the moving block 12, and then the guide column 16 is moved, thereby driving the clamping block 21 to clamp the flange 18; therefore, the utility model only needs to weld the flange 18 on the gas pipeline 2, and then push the flange 18 into the bottom of the first blind hole 8, and rotate the locking ring 6, thereby reducing the number of welding of the flange 18, and at the same time eliminating the need for manual alignment of the flange 18 and tightening of multiple bolts, thereby improving the laying efficiency of the gas pipeline 2.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0025] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A gas pipeline fastening connection device, characterized in that: The invention comprises a flange (18) fixed to a pipeline (2) and a clamping unit (1) connected to the end of a connecting pipe (3), wherein the clamping unit (1) comprises a clamping head (4) connected to the connecting pipe (3), wherein the clamping head (4) is provided with a first blind hole (8) which is clearance-matched with the flange (18), wherein the flange (18) is located at the inner bottom of the first blind hole (8), wherein the clamping head (4) is rotatably connected to a locking ring (6), wherein the outer circle of the locking ring (6) is threadedly connected to a movable ring (15 ), the movable ring (15) is slidably connected to the clamping head (4), a plurality of movable blocks (12) slidably connected to the clamping head (4) are circumferentially distributed on the movable ring (15), a clamping block (21) for clamping the flange (18) is connected to the movable block (12) via a spring (11), the clamping block (21) passes through the side wall of the first blind hole (8), the clamping block (21) is slidably connected to the movable block (12) and a chamfer (19) is provided on the clamping block (21).

2. The gas pipeline fastening connection device according to claim 1, characterized in that: The clamping head (4) is provided with a driving chamber (14) inside, one end of the locking ring (6) is located inside the driving chamber (14), the moving ring (15) is located inside the driving chamber (14), the clamping head (4) is also provided with a plurality of clamping chambers (10) connected with the first blind hole (8), the clamping block (21) is located inside the clamping chamber (10), the clamping chamber (10) is connected with the driving chamber (14) through a connecting hole (13), and the connecting hole (13) is slidably connected with the moving block (12).

3. The gas pipeline fastening connection device according to claim 2, characterized in that: A guide column (16) is provided on the moving block (12) located inside the clamping chamber (10), a through hole (17) is provided on the clamping block (21) and is clearance-matched with the guide column (16), and a gap is provided between the top of the guide column (16) and the inner wall of the first blind hole (8).

4. The gas pipeline fastening connection device according to claim 2, characterized in that: The clamping block (21) is embedded in the two side walls of the clamping chamber (10), and a second blind hole (20) is provided on the clamping block (21), and the spring (11) is located inside the second blind hole (20).

5. The gas pipeline fastening connection device according to claim 1, characterized in that: A rubber fastening block (9) is fixedly connected to an end surface of the clamping block (21) which faces away from the chamfer (19).

6. The gas pipeline fastening connection device according to claim 1, characterized in that: One end of the locking ring (6) is located outside the clamping head (4), and a locking hole (5) is provided on the locking ring (6) located outside the clamping head (4).

7. The gas pipeline fastening connection device according to claim 1, characterized in that: The connecting pipe (3) is a right-angle elbow pipe, a three-way pipe or a four-way pipe.

8. The gas pipeline fastening connection device according to claim 1, characterized in that: There are four or eight moving blocks (12) distributed in the circumferential direction.

9. The gas pipeline fastening connection device according to claim 1, characterized in that: A sealing sheet (7) is provided between the first blind hole (8) and the flange (18).

10. The gas pipeline fastening connection device according to claim 9, characterized in that: The sealing sheet (7) is fixed to the bottom of the first blind hole (8) by glue.

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