Conveniently connected high-neck flange

Abstract

The utility model relates to a high neck flange of convenient butt joint, including flange body, compensating pipe and end pipe, the neck of flange body's end has first flange connecting part, compensating pipe is bellows hose, both ends of compensating pipe all are fixed with second flange connecting part, and compensating pipe passes through the second flange connecting part of its any end and is detachably connected with the first flange connecting part of flange body through bolt, the lower end of end pipe has third flange connecting part, and the third flange connecting part of end pipe is detachably connected with the second flange connecting part of the other end of compensating pipe through bolt, the outer end surface of second flange body of compensating pipe both ends is equipped with at least one annular groove, and the annular groove shares the same axis with second flange body, and the annular groove places sealing ring, the utility model need not external pipeline and the axis of high neck flange to be completely consistent, can realize the quick and accurate butt joint installation with external flange and pipeline.

Description

Technical Field

[0001] This utility model relates to the field of metal products technology, and in particular to a high-neck flange that is easy to connect. Background Technology

[0002] A high-neck flange (also known as a weld neck flange) is a flange structure that is connected to a pipeline by butt welding through a circular pipe transition. Its neck height is significantly higher than that of a regular flange. By gradually transitioning the wall thickness to the pipe wall thickness, it improves stress distribution and enhances rigidity and load-bearing capacity.

[0003] Currently, when connecting high-neck flanges to external flanges and pipelines, the external flange, high-neck flange, and external pipelines must be on the same axis for accurate installation. When the high-neck flange is relatively large, multiple movements and adjustments using external hoisting equipment are required to complete the installation, which is time-consuming and labor-intensive.

[0004] Therefore, it is necessary to develop a high-neck flange that is easy to connect to, in order to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a high-neck flange that is easy to connect, which can achieve quick and accurate connection and installation with external flanges and pipelines without requiring the external pipeline to be completely aligned with the axis of the high-neck flange.

[0006] To achieve the above-mentioned utility model objectives, a high-neck flange that facilitates docking is provided, comprising a flange body, a compensating pipe, and an end pipe;

[0007] The flange body has a first flange connection portion at the end of its neck.

[0008] The compensating pipe is a corrugated flexible hose, and both ends of the compensating pipe are fixed with second flange connection parts. The compensating pipe is detachably connected to the first flange connection part of the flange body through the second flange connection part at either end by bolts.

[0009] The lower end of the end tube has a third flange connection, and the third flange connection of the end tube is detachably connected to the second flange connection at the other end of the compensation tube by bolts.

[0010] At least one annular groove is provided on the outer end surface of the second flange body at both ends of the compensation pipe. The annular groove shares the same axis with the second flange body, and a sealing ring is placed in the annular groove.

[0011] Specifically, the outer end surface of the second flange body is provided with an annular groove.

[0012] Preferably, connecting blocks are fixed in a ring array on the curved sidewalls of the second flange connection at both ends of the compensation pipe. The connecting blocks on the two second flange connection are one-to-one, and the same screw is sleeved on the two corresponding connecting blocks. Nuts are sleeved on both ends of the screw.

[0013] Furthermore, reinforcing nuts are fitted at both ends of the screw between the two connecting blocks.

[0014] Preferably, the outer end of the flange body is recessed inward near the inner wall to form an annular step portion, and a filter screen assembly is fixed to the annular step portion by bolts.

[0015] Furthermore, the filter assembly includes an annular frame and a filter screen;

[0016] The annular frame is positioned at the edge of the filter screen;

[0017] The filter screen has a curved structure.

[0018] The advantages of this high-neck flange, which facilitates docking, compared with existing technologies are as follows:

[0019] By installing a compensating pipe at the neck of the high neck flange, the compensating pipe has elasticity in both the radial and axial directions during installation, allowing for appropriate offset. This facilitates quick and accurate welding of the end pipe to the external pipeline, effectively reducing the difficulty of installing the high neck flange, external flange, and pipeline, and improving installation efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the flange body in this embodiment;

[0021] Figure 2 This is a schematic diagram of the structure after the flange body and the compensation pipe are connected in this embodiment;

[0022] Figure 3 This is a schematic diagram of a high-neck flange for easy docking in this embodiment. Figure 1 ;

[0023] Figure 4 This is a schematic diagram of a high-neck flange for easy docking in this embodiment. Figure 2 ;

[0024] Figure 5 This is a schematic diagram of the filter assembly in this embodiment;

[0025] Figure 6 This is a schematic diagram of a high-neck flange for easy docking in this embodiment. Figure 3 . Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] This embodiment of a high-neck flange that is easy to connect includes a flange body 1, a compensating pipe 2, and an end pipe 3.

[0028] like Figure 1 As shown, the flange body 1 has a first flange connection portion 4 at the end of its neck.

[0029] like Figure 2 As shown, the compensation pipe 2 is a corrugated hose, and both ends of the compensation pipe 2 are fixed with a second flange connection part 5. The compensation pipe 2 is detachably connected to the first flange connection part 4 of the flange body 1 through the second flange connection part 5 at either end by bolts.

[0030] like Figure 3 As shown, the lower end of the end pipe 3 has a third flange connection 6, and the third flange connection 6 of the end pipe 3 is detachably connected to the second flange connection at the other end of the compensation pipe 2 by bolts.

[0031] At least one annular groove 7 is provided on the outer end surface of the second flange body 5 at both ends of the compensation pipe 2. The annular groove 7 shares the same axis with the second flange body 5, and a sealing ring (not shown in the drawing) is placed in the annular groove 7. In this embodiment, an annular groove 7 is provided on the outer end surface of the second flange body 5.

[0032] When connecting the high-neck flange to the external flange end and pipeline, firstly, the flange body 1, the compensating pipe 2, and the end pipe 3 are connected and assembled. Then, the flange body 1 is connected to the external pipeline with bolts. Then, the outer end of the end pipe 3 is welded to the external pipeline. During the welding process, since the compensating pipe 2 has elasticity in both the radial and axial directions, it can be appropriately offset, which facilitates the quick and accurate welding of the end pipe 3 to the external pipeline.

[0033] In this embodiment, as Figure 6 As shown, connecting blocks 8 are fixed in a ring array on the curved sidewalls of the second flange connection parts 5 at both ends of the compensation pipe 2. The connecting blocks 8 on the two second flange connection parts 5 correspond one-to-one, and the same screw 9 is sleeved on the two corresponding connecting blocks 8. Nuts 10 are sleeved on both ends of the screw 9. With this arrangement, after the high neck flange is connected to the outer side flange and the pipeline, the compensation pipe 2 can be shaped and fixed by the screw 9 and the nuts 10 at its end to maintain stability.

[0034] Furthermore, both ends of the screw 9 are fitted with reinforcing nuts 11 between the two connecting blocks 8; this can further lock the screw 9, better fix the compensation tube 2, and improve stability.

[0035] In this embodiment, as Figure 4 As shown, an annular step portion 12 is formed by an inward recess on the outer end of the flange body 1 near the inner wall. A filter screen assembly 13 is fixed on the annular step portion 12 by bolts, which plays a certain filtering role for the flowing medium.

[0036] Furthermore, in this embodiment, as Figure 5 As shown, the filter assembly 13 includes an annular frame 14 and a filter 15; the annular frame 14 is located at the edge of the filter 15; the filter 15 has a curved surface structure, which increases the filtration area and improves the filtration effect.

[0037] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A high-neck flange that facilitates docking, characterized in that, Includes the flange body, compensating pipe, and end pipe; The flange body has a first flange connection portion at the end of its neck. The compensating pipe is a corrugated flexible hose, and both ends of the compensating pipe are fixed with second flange connection parts. The compensating pipe is detachably connected to the first flange connection part of the flange body through the second flange connection part at either end by bolts. The lower end of the end tube has a third flange connection, and the third flange connection of the end tube is detachably connected to the second flange connection at the other end of the compensation tube by bolts. At least one annular groove is provided on the outer end surface of the second flange body at both ends of the compensation pipe. The annular groove shares the same axis with the second flange body, and a sealing ring is placed in the annular groove.

2. The high-neck flange for easy docking as described in claim 1, characterized in that, The outer end surface of the second flange body is provided with an annular groove.

3. The high-neck flange for easy docking as described in claim 1, characterized in that, Connecting blocks are fixed in a ring array on the curved sidewalls of the second flange connection at both ends of the compensation pipe. The connecting blocks on the two second flange connection are one-to-one, and the same screw is sleeved on the two corresponding connecting blocks. Nuts are sleeved on both ends of the screw.

4. A high-neck flange for easy docking as described in claim 3, characterized in that, Both ends of the screw are fitted with reinforcing nuts between the two connecting blocks.

5. A high-neck flange for easy docking as described in any one of claims 1 to 4, characterized in that, The outer end of the flange body is recessed inward near the inner wall to form an annular step portion, and a filter screen assembly is fixed on the annular step portion by bolts.

6. A high-neck flange for easy docking as described in claim 5, characterized in that, The filter assembly includes an annular frame and a filter screen; The annular frame is positioned at the edge of the filter screen; The filter screen has a curved structure.

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