Flow director of turbine flowmeter

Abstract

The utility model provides a fluid director of a turbine flowmeter, which comprises a measuring tube, a turbine is rotatably mounted at the middle position in the measuring tube through a support, pipe joints are arranged at two ends of the measuring tube, and columns concentric with the pipe joints are arranged at the middle positions in the pipe joints. A plurality of guide vanes are annularly installed on the outer surface of the column rod at equal intervals, the ends, away from the column rod, of the guide vanes are fixed to the inner wall of the pipe joint, a first connecting ring is installed at the end, close to the measuring pipe, of the pipe joint, and second connecting rings are installed at the two ends of the measuring pipe correspondingly; a sealing ring is arranged between the first connecting ring and the second connecting ring, two symmetrically-arranged double-thread screws are arranged on one side of the measuring pipe, the ends of the double-thread screws penetrate through the second connecting ring, the sealing ring and the first connecting ring, and the two ends of each double-thread screw are in threaded connection with nuts. The utility model has the beneficial effect that the welding difficulty of the guide vane is reduced.

Description

Technical Field

[0001] This utility model is a flow guide for a turbine flow meter, belonging to the field of flow meters. Background Technology

[0002] Turbine flow meters are commonly used flow measurement devices, and their working principle is based on momentum transfer in fluid dynamics. To improve the accuracy of fluid flow measurement, a flow guide is usually installed inside the flow meter. Multiple annular, equidistant flow guide vanes are installed in the measuring tube, which is a common flow guide structure in turbine flow meters. The flow guide vanes are usually welded into the measuring tube. During the welding process, the portion of the flow guide vanes near the inner side of the measuring tube is limited by the tube, resulting in insufficient space for welding, which increases the difficulty of welding the flow guide vanes. Therefore, it is necessary to design a flow guide for turbine flow meters that reduces the difficulty of welding the flow guide vanes. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a flow guide for a turbine flow meter to solve the problems mentioned in the background art. This utility model reduces the difficulty of welding the flow guide blades.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a flow guide for a turbine flow meter, comprising a measuring tube, a turbine rotatably mounted in the middle of the measuring tube via a bracket, pipe joints at both ends of the measuring tube, external threads machined on the outer surface of the pipe joints, a column arranged concentrically with the pipe joint in the middle of the pipe joint, multiple guide vanes equidistantly mounted in a ring on the outer surface of the column, the end of the guide vane away from the column fixed to the inner wall of the pipe joint, a first connecting ring installed at the end of the pipe joint near the measuring tube, a second connecting ring installed at both ends of the measuring tube, a sealing ring provided between the first connecting ring and the second connecting ring, two symmetrically arranged double-ended screws provided on one side of the measuring tube, the ends of the double-ended screws penetrating the second connecting ring, the sealing ring and the first connecting ring, and nuts threaded to both ends of the double-ended screws, the nuts being located on the side of the first connecting ring away from the second connecting ring.

[0005] Furthermore, the first connecting ring has two symmetrical first through holes on the side facing the second connecting ring, the second connecting ring has two symmetrical second through holes aligned with the first through holes on the side facing the first connecting ring, the sealing ring has two round holes aligned with the first and second through holes on one side, and the end of the double-ended screw passes through the channel formed by the first through holes, the round holes, and the second through holes.

[0006] Furthermore, the support includes a shaft, and the measuring tube is provided with a shaft arranged concentrically with the measuring tube. The turbine is rotatably connected to the shaft, and a hanger is installed at the middle position of the outer surface of the shaft. The end of the hanger away from the shaft is installed on the inner wall of the measuring tube.

[0007] Furthermore, a second cone head is machined at the end of the shaft away from the turbine, and a first cone head is installed on the side of the turbine opposite to the second cone head.

[0008] Furthermore, both ends of the column are connected and fixed with a third conical head, and the third conical head and the column are integrally formed.

[0009] Furthermore, a connecting seat is fixedly connected to the end of the guide vane away from the column rod, and the connecting seat is welded and fixed to the pipe joint.

[0010] Furthermore, a connecting pipe is installed on the outer surface of the measuring tube near the rod, and the cross-section of the measuring tube is a regular hexagon.

[0011] The beneficial effects of this utility model are:

[0012] 1. By using a nut and a double-ended screw to assemble two pipe fittings at both ends of the measuring tube, the pipe fittings and the measuring tube are assembled. When welding the guide vanes, the structure formed by the column and the guide vanes is placed in the pipe fitting. At this time, there are no obstructions on both sides of the pipe fitting, which makes it convenient to weld the connection between the guide vanes and the pipe fitting from both sides of the pipe fitting. This allows for welding in areas with sufficient space, reducing the difficulty of welding the guide vanes.

[0013] 2. The pipe fitting and measuring tube are connected by using a double-ended screw and nut. When the external thread on the pipe fitting is damaged, the damaged pipe fitting can be replaced by separating the nut from the double-ended screw, without discarding the measuring tube, thus reducing resource waste.

[0014] 3. By using double-ended screws of different lengths, it is easy to install sealing rings of different thicknesses between the first connecting ring and the second connecting ring. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the flow guide of a turbine flow meter according to the present invention;

[0017] Figure 2 This is a cross-sectional view of the flow guide of a turbine flow meter according to the present invention;

[0018] Figure 3 This is a perspective view of the turbine in the guide of a turbine flow meter according to the present invention.

[0019] Figure 4 This is an assembly diagram of the guide shaft, second connecting ring, and measuring tube of a turbine flow meter according to the present invention.

[0020] Figure 5 This is an assembly diagram of the guide vanes, first connecting ring, and pipe joint in the guide vane of a turbine flow meter according to the present invention.

[0021] Figure 6 This is a perspective view of the sealing ring in the guide of a turbine flow meter according to the present invention;

[0022] In the diagram: 1-measuring tube, 2-sealing ring, 3-first connecting ring, 4-pipe joint, 5-guide vane, 6-column, 7-nut, 8-double-ended screw, 9-second connecting ring, 10-connecting tube, 11-turbine, 12-shaft, 13-first conical head, 14-second conical head, 15-lifting rod, 16-second through hole, 17-first through hole, 18-connecting seat, 19-third conical head, 20-round hole. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please see Figures 1-4 This utility model provides a technical solution: a flow guide for a turbine flow meter, including a measuring tube 1 with a regular hexagonal cross-section. A connecting pipe 10 for connecting to the flow meter head is installed on the outer surface of the measuring tube 1 near the hanger 15. A turbine 11 is rotatably installed in the middle of the measuring tube 1 via a bracket, wherein the bracket includes a shaft 12. The shaft 12 is arranged concentrically with the measuring tube 1 inside the measuring tube 1. The turbine 11 is rotatably connected to the shaft 12. A hanger 15 is installed in the middle of the outer surface of the shaft 12. The end of the hanger 15 away from the shaft 12 is installed on the inner wall of the measuring tube 1. A second conical head 14 is machined on the end of the shaft 12 away from the turbine 11. A first conical head 13 is installed on the side of the turbine 11 away from the second conical head 14. The first conical head 13 and the second conical head 14 allow the fluid to flow smoothly through the turbine 11 and the shaft 12.

[0025] See Figures 1-6Both ends of the measuring tube 1 are equipped with pipe fittings 4. The outer surface of the pipe fitting 4 is machined with external threads. A column rod 6 is arranged concentrically with the pipe fitting 4 at the middle position inside the pipe fitting 4. Both ends of the column rod 6 are connected and fixed with a third conical head 19 integrally formed with the column rod 6. The design of the third conical head 19 facilitates the smooth flow of fluid through the column rod 6. Multiple guide vanes 5 are installed in an annular shape at equal intervals on the outer surface of the column rod 6. The end of the guide vane 5 away from the column rod 6 is connected and fixed to a connecting seat 18 welded and fixed to the inner wall of the pipe fitting 4. A first connecting ring 3 is installed at the end of the pipe fitting 4 closest to the measuring tube 1. Both ends of the tube 1 are equipped with second connecting rings 9. A sealing ring 2 is provided between the first connecting ring 3 and the second connecting ring 9. Two symmetrically arranged double-ended screws 8 are provided on one side of the measuring tube 1. The ends of the double-ended screws 8 pass through the second connecting ring 9, the sealing ring 2, and the first connecting ring 3. Nuts 7 are threaded to both ends of the double-ended screws 8. The nuts 7 are located on the side of the first connecting ring 3 facing away from the second connecting ring 9. The side of the first connecting ring 3 facing the second connecting ring 9 has two symmetrically opened first through holes 17. The side of the second connecting ring 9 facing the first connecting ring 3 has two symmetrically opened holes 17 that are connected to the first through holes 17. The second through hole 16 is aligned with the first through hole 17. Two round holes 20 aligned with the first through hole 17 and the second through hole 16 are formed on one side of the sealing ring 2. The end of the double-ended screw 8 passes through the channel formed by the first through hole 17, the round holes 20, and the second through hole 16. The two pipe fittings 4 are installed at both ends of the measuring tube 1 by using the nut 7 and the double-ended screw 8, thus assembling the pipe fittings 4 and the measuring tube 1. When welding the guide vane 5, the structure formed by the column rod 6 and the guide vane 5 is placed in the pipe fitting 4. At this time, there are no obstructions on either side of the pipe fitting 4, thus facilitating access from the pipe fitting. Welding is performed on both sides of the head 4 to the connection between the guide vane 5 and the pipe joint 4, which makes welding easier in areas with sufficient space and reduces the difficulty of welding the guide vane 5. The pipe 10 joint 4 and the measuring tube 1 are connected by using a double-ended screw 8 and a nut 7. When the external thread on the pipe joint 4 is damaged, the damaged pipe joint 4 can be replaced by separating the nut 7 and the double-ended screw 8 without discarding the measuring tube 1, thus reducing resource waste. By using double-ended screws 8 of different lengths, it is easy to install sealing rings 2 of different thicknesses between the first connecting ring 3 and the second connecting ring 9.

[0026] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flow guide for a turbine flow meter, comprising a measuring tube (1), characterized in that: A turbine (11) is rotatably mounted on a bracket at the center of the measuring tube (1). Both ends of the measuring tube (1) are provided with pipe joints (4). The outer surface of each pipe joint (4) is machined with external threads. A column (6) is concentrically arranged within the center of each pipe joint (4). Multiple guide vanes (5) are equidistantly mounted in a ring on the outer surface of the column (6). The end of each guide vane (5) away from the column (6) is fixed to the inner wall of the pipe joint (4). A [missing information] is mounted at the end of the pipe joint (4) closest to the measuring tube (1). The first connecting ring (3) is provided with a second connecting ring (9) installed at both ends of the measuring tube (1). A sealing ring (2) is provided between the first connecting ring (3) and the second connecting ring (9). Two symmetrically arranged double-ended screws (8) are provided on one side of the measuring tube (1). The ends of the double-ended screws (8) pass through the second connecting ring (9), the sealing ring (2) and the first connecting ring (3). Nuts (7) are threaded to both ends of the double-ended screws (8). The nuts (7) are located on the side of the first connecting ring (3) away from the second connecting ring (9).

2. The flow guide of a turbine flow meter according to claim 1, characterized in that: The first connecting ring (3) has two first through holes (17) symmetrically opened on the side facing the second connecting ring (9). The second connecting ring (9) has two second through holes (16) symmetrically opened on the side facing the first connecting ring (3) and aligned with the first through holes (17). The sealing ring (2) has two round holes (20) aligned with the first through holes (17) and the second through holes (16). The end of the double-ended screw (8) passes through the channel formed by the first through holes (17), the round holes (20) and the second through holes (16).

3. The flow guide for a turbine flow meter according to claim 1, characterized in that: The bracket includes a shaft (12), and the measuring tube (1) is provided with a shaft (12) arranged concentrically with the measuring tube (1). The turbine (11) is rotatably connected to the shaft (12). A hanger (15) is installed at the middle position of the outer surface of the shaft (12). The end of the hanger (15) away from the shaft (12) is installed on the inner wall of the measuring tube (1).

4. The flow guide for a turbine flow meter according to claim 3, characterized in that: The shaft (12) has a second cone head (14) machined at the end away from the turbine (11), and the turbine (11) has a first cone head (13) mounted on the side away from the second cone head (14).

5. The flow guide for a turbine flow meter according to claim 1, characterized in that: Both ends of the column rod (6) are connected and fixed with a third conical head (19), and the third conical head (19) and the column rod (6) are integrally formed.

6. The flow guide of a turbine flow meter according to claim 1, characterized in that: The guide vane (5) is connected to a connecting seat (18) at the end away from the column rod (6), and the connecting seat (18) is welded and fixed to the pipe joint (4).

7. The flow guide of a turbine flow meter according to claim 1, characterized in that: A connecting pipe (10) is installed on the outer surface of the measuring tube (1) near the hanging rod (15), and the cross-section of the measuring tube (1) is a regular hexagon.

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