Oil and gas pipeline fastener sealing device

Abstract

The utility model belongs to the technical field of metal part machining, and discloses an oil and gas pipeline fastener sealing device which comprises a first oil and gas pipeline and a second oil and gas pipeline, the first oil and gas pipeline is connected with the second oil and gas pipeline through a connecting assembly, and the connecting assembly comprises a first flange and a second flange. The first flange is arranged on the annular face of the first oil and gas pipeline in a sleeving mode, the second flange is arranged on the annular face of the second oil and gas pipeline in a sleeving mode, sealing grooves are formed in the adjacent ends of the first flange and the second flange, the two sealing grooves are communicated, and a sealing ring is arranged between the first flange and the second flange. The sealing grooves are formed in the flanges, displacement of the sealing rings is limited through the sealing grooves, meanwhile, the limiting protruding blocks and the limiting grooves are arranged, axial rotation and movement of the sealing rings are limited through matched use of the limiting protruding blocks and the limiting grooves, and therefore the situation that the sealing rings between the two flanges are displaced can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metal part processing technical field, concretely relates to a kind of oil and gas pipeline fastener sealing device. BACKGROUND

[0002] Oil and gas pipeline is composed of oil and gas pipe and its accessories, and according to the needs of process flow, corresponding oil pump unit is equipped, and a complete pipeline system is designed and installed to complete oil and gas loading and unloading and transfer task, and the pipe material of oil and gas pipeline is generally steel pipe, which is connected into long-distance pipeline using welding and flange connection device, and valve is used for opening and closing control and flow regulation.

[0003] In the prior art, the length of a single oil and gas pipeline is limited, and long-distance oil and gas pipeline transportation cannot be avoided without pipeline and pipeline butt joint device. Generally, the pipeline butt joint device is provided with flanges at the interface ends of two pipelines, and the two flanges are fixed by bolts and nuts. After long-term use, the nuts are prone to looseness, resulting in poor sealing between the flanges. In addition, the sealing gasket between the two flanges is prone to displacement, which also causes poor sealing between the flanges. UTILITY MODEL CONTENT

[0004] The utility model aims to provide an oil and gas pipeline fastener sealing device to solve the problems of looseness of nuts after long-term use and displacement of sealing gasket between two flanges in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an oil and gas pipeline fastener sealing device, comprising a first oil and gas pipeline and a second oil and gas pipeline, the first oil and gas pipeline and the second oil and gas pipeline are connected by a connecting assembly, the connecting assembly comprises a first flange and a second flange, the first flange is sleeved on the annular surface of the first oil and gas pipeline, the second flange is sleeved on the annular surface of the second oil and gas pipeline, one end of the first flange and the second flange adjacent to each other is provided with a sealing groove, and the two sealing grooves are communicated, a sealing ring is arranged between the first flange and the second flange, and the two ends of the sealing ring are embedded in the two sealing grooves respectively.

[0006] Preferably, the inner walls of the two sealing grooves are arranged with limit protrusions in ring array, and the inner sides of the two ends of the sealing ring are provided with limit grooves matched with the limit protrusions.

[0007] Preferably, the groove diameter of the sealing groove gradually decreases along the direction close to the groove opening.

[0008] Preferably, the sealing ring is a rubber ring.

[0009] Preferably, the first flange and the second flange are fixedly connected through a fastening assembly, the fastening assembly comprising a plurality of bolts and a plurality of nuts, the nuts being sleeved on the bolts and being threadedly connected with the bolts.

[0010] Preferably, the nuts are hexagonal nuts.

[0011] Preferably, the first flange and the second flange are each provided with a threaded hole allowing the bolt to pass through.

[0012] Preferably, the second flange is sleeved with a limiting ring and a moving ring at an end away from the first flange, the limiting ring being located between the plurality of nuts, and the moving ring being located at one side of the limiting ring and being threadedly connected with the second flange.

[0013] Preferably, the plurality of nuts are each tangentially arranged with the limiting ring.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] (1) the utility model discloses that the sealing groove is set up on the flange, and the sealing groove is used for limiting the displacement of the sealing ring, and the limiting protrusion and the limiting groove are arranged, the limiting protrusion and the limiting groove are used in cooperation to limit the axial rotation and movement of the sealing ring, so that the displacement of the sealing ring between the two flanges can be avoided, and the sealing property between the two flanges is improved.

[0016] (2) the utility model discloses that the limiting ring of the circular ring structure is arranged, the limiting ring is inserted between the plurality of nuts, the outer circumference of the limiting ring is in abutment with the outer wall of the plurality of nuts, the plurality of nuts cannot rotate, the loosening of the nuts can be avoided, and the sealing property between the two flanges is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is the right view of the first flange of the utility model;

[0019] Figure 3 It is a structural schematic view of the sealing ring of the utility model;

[0020] Figure 4 It is the right view of the second flange of the utility model;

[0021] In the drawing: 1, first oil and gas pipeline; 2, second oil and gas pipeline; 3, first flange; 4, second flange; 5, sealing groove; 6, sealing ring; 7, limiting protrusion; 8, limiting groove; 9, bolt; 10, nut; 11, limiting ring; 12, moving ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0023] Please refer to Figures 1-4 As shown in the figure, the utility model provides a technical scheme: an oil and gas pipeline fastener sealing device, including first oil and gas pipeline 1 and second oil and gas pipeline 2, first oil and gas pipeline 1 and second oil and gas pipeline 2 are connected through connecting assembly, connecting assembly includes first flange 3 and second flange 4, first flange 3 is set in the torus of first oil and gas pipeline 1, second flange 4 is set in the torus of second oil and gas pipeline 2, and the end adjacent to first flange 3 and second flange 4 is provided with sealing groove 5, and two sealing grooves 5 are communicated, and sealing ring 6 is arranged between first flange 3 and second flange 4, and the both ends of sealing ring 6 are embedded in two sealing grooves 5 respectively.

[0024] As Figures 2-3 Shown in the figure, the inner wall of two sealing grooves 5 is distributed in limit protrusion 7 in annular array, and the both end inner sides of sealing ring 6 are provided with limit recess 8 matched with limit protrusion 7.

[0025] In the above technical scheme, when first flange 3 and second flange 4 need to be connected, one end of sealing ring 6 is embedded in sealing groove 5 on first flange 3, then sealing groove 5 on second flange 4 is aligned with the other end of sealing ring 6, and the other end of sealing ring 6 is embedded in sealing groove 5 on second flange 4, and limit protrusion 7 is inserted into limit recess 8, and the displacement of sealing ring 6 is limited through sealing groove 5, and the axial rotation and movement of sealing ring 6 are limited through the cooperation of limit protrusion 7 and limit recess 8, so that the displacement of sealing ring 6 between two flanges can be avoided, and the sealing property between two flanges is improved.

[0026] As Figure 1 Shown in the figure, the groove diameter of sealing groove 5 gradually decreases along the direction close to the slot, and sealing ring 6 is rubber ring.

[0027] When first flange 3 and second flange 4 are connected, the outer diameter of sealing groove 5 increases by extruding sealing ring 6, and the variable groove diameter of sealing groove 5 matches the variable outer diameter of sealing ring 6, so that the sealing between two flanges can be realized, and the installation of sealing ring 6 is facilitated.

[0028] As Figure 1 And 4As shown, the first flange 3 and the second flange 4 are fixedly connected through a fastening assembly, the fastening assembly comprises a plurality of bolts 9 and a plurality of nuts 10, the nuts 10 are sleeved on the bolts 9, and the nuts 10 are threadedly connected with the bolts 9, and the first flange 3 and the second flange 4 are both provided with screw holes allowing the bolts 9 to pass through.

[0029] When the sealing ring 6 is installed, the plurality of bolts 9 are sequentially threaded through the screw holes on the first flange 3 and the second flange 4, and the nuts 10 are tightened, so as to realize the connection and fixation of the first flange 3 and the second flange 4.

[0030] As shown in the figure, Figure 4 The nut 10 is a hexagonal nut.

[0031] The second flange 4 is sleeved with a limiting ring 11 and a moving ring 12 away from the first flange 3, the limiting ring 11 is located between the plurality of nuts 10, the moving ring 12 is located on one side of the limiting ring 11, and the moving ring 12 is threadedly connected with the second flange 4.

[0032] The plurality of nuts 10 are tangentially arranged with the limiting ring 11.

[0033] When the nut 10 is tightened, the limiting ring 11 is moved, so that the outer circumference of the limiting ring 11 abuts against the outer wall of the plurality of nuts 10, so that the plurality of nuts 10 cannot rotate, thereby avoiding the loosening of the nut 10, and further improving the sealing property between the two flanges.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An oil and gas pipeline fastener seal apparatus, characterized by: The utility model provides a connecting assembly of oil and gas pipeline, including first oil and gas pipeline (1) and second oil and gas pipeline (2), first oil and gas pipeline (1) is connected with second oil and gas pipeline (2) through connecting assembly, connecting assembly includes first flange (3) and second flange (4), first flange (3) is sleeved in the torus of first oil and gas pipeline (1), and second flange (4) is sleeved in the torus of second oil and gas pipeline (2), and the end of first flange (3) and second flange (4) adjacent is provided with sealing groove (5), and two sealing grooves (5) are communicated, and the sealing ring (6) is arranged between first flange (3) and second flange (4), and both ends of sealing ring (6) are embedded in two sealing grooves (5) respectively.

2. A seal apparatus for oil and gas pipeline fasteners as defined in claim 1, wherein: The inner wall of two sealing grooves (5) is distributed in annular array limited protruding block (7), and the inner side of both ends of sealing ring (6) is provided with limited recess (8) matched with limited protruding block (7).

3. A seal for an oil and gas pipeline fastener as defined in claim 1, wherein: The groove diameter of sealing groove (5) gradually reduces along the direction close to the slot.

4. A seal apparatus for oil and gas pipeline fasteners as defined in claim 1, wherein: The sealing ring (6) is rubber ring.

5. A seal apparatus for oil and gas pipeline fasteners as defined in claim 1, wherein: First flange (3) and second flange (4) are fixedly connected through fastening assembly, and the fastening assembly includes a plurality of bolts (9) and a plurality of nuts (10), the nut (10) is sleeved on the bolt (9), and the nut (10) is threadedly connected with the bolt (9).

6. A seal for an oil and gas pipeline fastener as defined in claim 5, wherein: The nut (10) is hexagon nut.

7. An oil and gas pipeline fastener sealing apparatus according to claim 5, wherein: First flange (3) and second flange (4) are provided with screw hole allowing bolt (9) to pass through.

8. An oil and gas pipeline fastener sealing apparatus according to claim 5, wherein: The end of second flange (4) away from first flange (3) is sleeved with limiting ring (11) and moving ring (12), the limiting ring (11) is located between a plurality of nuts (10), the moving ring (12) is located on one side of limiting ring (11), and the moving ring (12) is threadedly connected with second flange (4).

9. A seal for an oil and gas pipeline fastener as defined in claim 5, wherein: A plurality of nuts (10) are tangentially arranged with limiting ring (11).

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