Annular pipeline flow adjusting device based on iris mechanism

Abstract

The invention relates to the technical field of pipeline flow regulation, in particular to an annular pipeline flow regulation device based on an iris mechanism. The device is characterized by comprising a rotating wheel, a valve mounting seat and a channel, the rotating wheel comprises a fixing ring, and a turbine is arranged on the outer side of the fixing ring; the number of the valve installation seats is two, the two valve installation seats are installed on the two sides of the rotating wheel in the axial direction respectively, valve blades are arranged between the valve installation seats and the rotating wheel, the channel and the rotating wheel are coaxially arranged in the rotating wheel, a worm is connected to the turbine in a meshed mode, and the worm is connected with a motor to achieve driving. Through the combination of the valve blade, the valve mounting seat and the channel, the area of the annular cross section of the channel is changed, the changed cross section is still in a central symmetry shape, so that the flow of fluid in the annular channel is changed, the circumferential uniformity of the fluid is ensured, the structure is compact, the movement is stable, and the flow regulation control precision is high.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline flow regulation, and specifically to an annular pipeline flow regulation device based on an iris mechanism. Background Art

[0002] A flow regulation device is a key equipment used for regulating the flow rate of fluid media such as gases and liquids during the pipeline transportation process, and plays an important role in multiple fields such as industrial production and laboratory research.

[0003] The structural forms of existing common flow regulation devices mainly include conical valves, butterfly valves, ball valves, plug valves, gate valves, etc. These valve structures have relatively wide applications in industrial production and daily life. However, the above traditional flow regulation devices have two limitations: one is that they can only be applied to circular pipelines, yet in some application scenarios, the pipelines for transporting gases or liquids are annular, such as the intake and exhaust pipelines of industrial ventilators, the air flow channels of aeroengines, etc., and currently common flow regulation devices cannot be directly applied to annular pipelines; the other is that most current flow regulation devices will cause the deterioration of the circumferential uniformity of the flow field. For some scenarios with high requirements for the pipeline flow quality, such as fan / compressor performance tests, precise pipeline flow measurements, etc., traditional flow regulation valves cannot meet the requirements for the air flow quality.

[0004] Therefore, the present invention provides a flow regulation device based on an iris mechanism to meet the requirements of flow regulation for annular pipelines and application scenarios with high requirements for the circumferential uniformity of pipeline flow. Summary of the Invention

[0005] The purpose of the present invention is to avoid the deficiencies of the prior art and provide an annular pipeline flow regulation device based on an iris mechanism, thereby improving the current situation that existing flow regulation devices cannot be directly applied to annular pipelines and will deteriorate the circumferential uniformity of the air flow.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: an annular pipeline flow regulation device based on an iris mechanism, characterized in that it includes a runner, a valve mounting seat, and a channel. The runner includes a fixed ring, and a turbine is arranged on the outer side of the fixed ring. Two valve mounting seats are provided, and the two valve mounting seats are respectively installed on both axial sides of the runner. There are valve vanes arranged between the valve mounting seat and the runner. The channel is coaxially arranged inside the runner, and a worm is meshingly connected to the turbine, and the worm is connected to a motor to achieve driving. Among them, the motor drives the worm, thereby driving the fixed ring to rotate, and further enabling the valve vanes to move to change the cross-sectional area of the channel, so as to achieve the purpose of regulating the flow rate.

[0007] Further, the runner is of a circular ring structure, and a convex structure for nested fit installation with the valve mounting seat is axially arranged on the outer edge of the fixed ring; positioning holes are provided on the fixed ring; The valve mounting seat includes a nested ring, a flange ring, a connecting ring, a positioning slideway and flange holes; the positioning slideway and the extended positioning slideway are arranged on the nested ring, the flange holes are arranged on the flange ring, and the connecting ring is arranged between the nested ring and the flange ring to connect the nested ring and the flange ring; The convex structure of the fixed ring is fitted and installed with the nested ring, so that the device is closed in the radial direction; Valve vanes are symmetrically arranged between the runner and the valve mounting seat. The valve vanes are connected to the runner through hole positioning posts arranged on the runner, and the valve vanes are connected to the valve mounting seat through slideway positioning posts arranged on the valve mounting seat, so as to be connected to the valve positioning seat; At the same time, under the combined action of the rotation of the valve vane through the hole positioning post and the linear movement of the slideway positioning post, the valve vane generates a radial movement to change the cross-sectional area of the channel.

[0008] Further, there are four valve vanes, and the four valve vanes are stacked in sequence to form a group of valve vanes. Two groups of valve vanes are symmetrically arranged between the runner and the valve mounting seat.

[0009] Further, extended positioning holes are also provided on the fixed ring, and extended positioning slideways corresponding to the extended positioning holes are also provided on the nested ring; the valve vanes are connected to the extended positioning holes and the extended positioning slideways through slideway positioning posts corresponding to the extended positioning holes; The extended positioning holes and the extended positioning slideways are used to make each valve vane contact both the runner and the valve mounting seat, so that the movable runner, the valve mounting seat and the valve vanes are tightly fixed axially, and the stable and accurate movement between the components is realized.

[0010] Further, three extended positioning holes are respectively arranged on both sides of the fixed ring, and the distances that the three extended positioning holes extend from the fixed ring are respectively one time, two times and three times the thickness of the valve vane.

[0011] Further, three extended positioning slideways are provided, and the distances that the three extended positioning slideways extend from the nested ring are respectively one time, two times and three times the thickness of the valve vane.

[0012] Further, the valve vane is of an arc-shaped structure, and the inner diameter of the arc-shaped structure of the valve vane is the same as the inner diameters of the fixed ring and the nested ring.

[0013] Furthermore, the channel is composed of an inner channel and an outer channel, and the inner channel and the outer channel are welded into an integral structure by streamlined wing plates; the inner channel itself is a circular cross-section channel, and the inner channel and the outer channel form an annular cross-section channel, and the movement of the valve blade realizes the change of the cross-sectional area of the annular cross-section channel.

[0014] Furthermore, the cross-section of the wing plate is streamlined to reduce the influence on the air flow in the pipeline; a channel flange connected to the flange hole of the valve mounting seat is arranged on the outer channel, and the outer channel is connected to the valve mounting seat through the channel flange.

[0015] Furthermore, the inner channel and the outer channel are welded into an integral structure by four streamlined wing plates.

[0016] Compared with the prior art, the present invention has the following technical effects: a flow rate regulating device for an annular pipeline based on an iris mechanism, which realizes the change of the area of the annular cross-section of the channel by the combination of the valve blade, the valve mounting seat and the channel. The changed cross-section is still a centrally symmetric shape, so as to change the flow rate of the fluid in the annular channel and ensure the circumferential uniformity of the fluid. Its structure is compact, the movement is stable, and the flow rate regulation and control accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an axonometric structure schematic diagram of the present invention; Figure 2 For the present invention Figure 1 is a schematic diagram of the runner structure; Figure 3 For the present invention Figure 1 is a schematic diagram of the valve mounting seat structure; Figure 4 For the present invention Figure 1 is a schematic diagram of the valve blade structure; Figure 5 For the present invention Figure 1 is an installation sectional view of the runner, the valve mounting seat and the blade; Figure 6 For the present invention Figure 4 is a schematic diagram of the structure of three valve blades forming a group; Figure 7 is an axonometric structure schematic diagram of the runner of the figure of the present invention.

[0018] In the figure: 1. Runner; 1-1. Fixed ring; 1-2. Positioning hole; 1-3. Extended positioning hole; 1-4. Worm gear; 2. Valve mounting seat; 2-1. Nested ring; 2-2. Positioning slideway; 2-3. Extended positioning slideway; 2-4. Flange ring; 2-5. Flange hole; 2-6. Connecting ring; 3. Valve blade; 3-1. Hole positioning column; 3-2. Slideway positioning column; 4. Worm; 5. Motor; 6. Channel; 6-1. Outer channel; 6-2. Channel flange; 6-3. Inner channel; 6-4. Wing plate; 6-5. Circular cross-section pipe; 6-6. Annular cross-section pipe. Detailed implementation mode

[0019] The principles and features of the present invention will be described below in conjunction with the accompanying drawings; the examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0020] In order to achieve the above object, the present invention provides the following specific implementation modes: Embodiment 1: An annular pipeline flow regulating device based on an iris mechanism, including a runner 1, a valve mounting seat 2 and a channel 6. The runner 1 includes a fixed ring 1-1, and a worm gear 1-4 is arranged on the outer side of the fixed ring 1-1. There are two valve mounting seats 2, and the two valve mounting seats 2 are respectively installed on both axial sides of the runner 1. A valve blade 3 is arranged between the valve mounting seat 2 and the runner 1. The channel 6 is coaxially arranged with the runner 1 inside the runner 1. A worm 4 is meshed and connected to the worm gear 1-4, and the worm 4 is connected to the motor 5 to realize driving. Among them, the motor 5 drives the worm 4 to drive the fixed ring 1-1 to rotate.

[0021] Among them, the runner 1 is a circular ring structure, and a convex structure for nested cooperation and installation with the valve mounting seat 2 is arranged along the axial direction on the outer edge of the fixed ring 1-1. Positioning holes 1-2 are arranged on the fixed ring 1-1. The valve mounting seat 2 includes a nested ring 2-1, a flange ring 2-4, a connecting ring 2-6, a positioning slideway 2-2 and a flange hole 2-5. The positioning slideway 2-2 and the extended positioning slideway 2-3 are arranged on the nested ring 2-1, the flange hole 2-5 is arranged on the flange ring 2-4, and the connecting ring 2-6 is arranged between the nested ring 2-1 and the flange ring 2-4 to connect the nested ring 2-1 and the flange ring 2-4. The convex structure of the fixed ring 1-1 is cooperatively installed with the nested ring 2-1, so that the device is closed in the radial direction. The valve blades 3 are symmetrically arranged between the runner 1 and the valve mounting seat 2. The valve blades 3 are connected to the runner 1 through the hole positioning columns 3-1 and the positioning holes 1-2 arranged on the runner 1, and the valve blades 3 are connected to the valve mounting seat 2 through the slideway positioning columns 3-2 and the positioning slideways 2-2 on the valve mounting seat 2 to realize connection with the valve positioning seat 2. Among them, there are four valve blades 3. The four valve blades 3 are stacked in sequence to form a group of valve blades. Two groups of valve blades 3 are symmetrically arranged between the runner 1 and the valve mounting seat 2. The valve blade 3 has an arc-shaped structure, and the inner diameter of the arc-shaped structure of the valve blade 3 is the same as the inner diameters of the fixed ring 1-1 and the nested ring 2-1.

[0022] At the same time, under the combined action of the rotational movement of the valve blade 3 through the hole positioning post 3-1 and the linear movement of the slideway positioning post 3-2, the valve blade 3 generates a radial movement to change the cross-sectional area of the channel 6.

[0023] An extended positioning hole 1-3 is also provided on the fixed ring 1-1, and an extended positioning slideway 2-3 corresponding to the extended positioning hole 1-3 is also provided on the nested ring 2-1; the valve blade 3 is connected to the extended positioning hole 1-3 and the extended positioning slideway 2-3 through the slideway positioning post 3-2 corresponding to the extended positioning hole 1-3; three extended positioning holes 1-3 are respectively provided on both sides of the fixed ring 1-1, and the distances that the three extended positioning holes 1-3 extend from the fixed ring 1-1 are respectively one time, two times, and three times the thickness of the valve blade 3; three extended positioning slideways 2-3 are provided, and the distances that the three extended positioning slideways 2-3 extend from the nested ring 2-1 are respectively one time, two times, and three times the thickness of the valve blade 3.

[0024] The extended positioning hole 1-3 and the extended positioning slideway 2-3 are used to make each valve blade 3 contact both the runner 1 and the valve mounting seat 2, so that the movable runner 1, the valve mounting seat 2, and the valve blade 3 are tightly fixed axially, realizing the stable and accurate movement between the components.

[0025] The channel 6 is composed of an inner channel 6-3 and an outer channel 6-1. The inner channel 6-3 and the outer channel 6-1 are welded into an integral structure by a streamlined wing plate 6-4; the inner channel 6-3 itself is a circular cross-section channel, and the inner channel 6-3 and the outer channel 6-1 form an annular cross-section channel 6-6. The cross-section of the wing plate 6-4 is streamlined, which is used to reduce the influence on the air flow in the pipeline; a channel flange 6-2 connected to the flange hole 2-5 of the valve mounting seat 2 is provided on the outer channel 6-1, and the outer channel 6-1 is connected to the valve mounting seat 2 through the channel flange 6-2. The inner channel 6-3 and the outer channel 6-1 are welded into an integral structure by four streamlined wing plates 6-4.

[0026] Finally, the valve blade 3 generates a radial movement to change the cross-sectional area of the annular cross-section channel 6-6.

[0027] As Figures 1-7 shown, the technical solutions and technical effects of the present invention will be further described below in conjunction with the accompanying drawings: As Figure 1As shown, a circular pipeline flow regulating device based on an iris mechanism includes a runner 1, a valve mounting seat 2, and a channel 6. The runner 1 includes a fixed ring 1-1, and a turbine 1-4 is arranged on the outer side of the fixed ring 1-1. Two valve mounting seats 2 are provided, and the two valve mounting seats 2 are respectively installed on both axial sides of the runner 1. A valve vane 3 is arranged between the valve mounting seat 2 and the runner 1. The channel 6 is coaxially arranged with the runner 2 inside the runner 2. A worm 4 is meshed and connected to the turbine 1-4, and the worm 4 is connected to a motor 5 to achieve driving.

[0028] The channel 6 is composed of an inner channel 6-3 and an outer channel 6-1. The inner channel 6-3 and the outer channel 6-1 are welded into an integral structure by four streamlined wing plates 6-4. A channel flange 6-2 connected to the flange hole 2-5 of the valve mounting seat 2 is arranged on the outer channel 6-1. The inner channel 6-3 is a circular cross-section channel by itself. The inner channel 6-3 and the outer channel 6-1 form an annular cross-section channel 6-6. Under the combined action of the rotation of the hole positioning column 3-1 and the linear movement of the slideway positioning column 3-2, the valve vane 3 generates movement to change the cross-sectional area, so as to achieve the purpose of regulating the flow rate. The cross-section of the wing plate 6-4 is streamlined, which can reduce the influence on the air flow in the pipeline. The outer channel 6-1 is connected to the valve mounting seat 2 through the channel flange 6-2.

[0029] As Figure 2 shown, the runner 1 is a circular ring structure. A convex structure for nested fit installation with the valve mounting seat 2 is arranged along the axial direction on the outer edge of the fixed ring 1-1. Positioning holes 1-2 and extended positioning holes 1-3 are arranged on the fixed ring 1-1.

[0030] As Figure 3 shown, the valve mounting seat 2 includes a nested ring 2-1, a flange ring 2-4, a connecting ring 2-6, a positioning slideway 2-2, an extended positioning slideway 2-3, and a flange hole 2-5. The positioning slideway 2-2 and the extended positioning slideway 2-3 are arranged on the nested ring 2-1. The flange hole 2-5 is arranged on the flange ring 2-4. The connecting ring 2-6 is arranged between the nested ring 2-1 and the flange ring 2-4 to connect the nested ring 2-1 and the flange ring 2-4.

[0031] As Figure 4 、 5As shown in FIGS. 6, the valve blade 3 has an arc-shaped structure. The inner diameter of the arc-shaped structure of the valve blade 3 is the same as the inner diameters of the fixed ring 1-1 and the nested ring 2-1. The valve blade 3 is provided with a hole positioning post 3-1 and a slideway positioning post 3-2. Four valve blades are stacked in sequence to form a group of valve blades. Two groups of valve blades are symmetrically arranged between the runner 1 and the valve mounting seat 2. The valve blade 3 is connected to the runner 1 through the hole positioning post 3-1 and the positioning hole 1-2 provided on the runner 1, and the valve blade 3 is connected to the valve mounting seat 2 through the slideway positioning post 3-2 and the positioning slideway 2-2 on the valve mounting seat 2.

[0032] Three extension positioning holes 1-3 are respectively arranged on both sides of the fixed ring 1-1. The distances that the three extension positioning holes 1-3 extend from the fixed ring 1-1 are respectively one time, two times, and three times the thickness of the valve blade 3. The extension positioning slideway 2-3 is provided with three. The distances that the three extension positioning slideways extend from the nested ring are respectively one time, two times, and three times the thickness of the valve blade. The setting of the extension positioning hole 1-3 and the extension positioning slideway 2-3 enables each valve blade 3 to be in contact with both the runner 1 and the valve mounting seat 2, so that the movable runner 1, the valve mounting seat 2, and the valve blade 3 are tightly fixed axially, and the relative movement between the components is stable and accurate.

[0033] The convex structure arranged along the axial direction on the outer edge of the fixed ring 1-1 is fitted and installed with the nested ring 2-1, so that the device is closed in the radial direction and the sealing performance is improved.

[0034] For the described annular pipeline flow regulating device based on the iris mechanism, during implementation, the worm 4 is driven to move by the motor 5. The worm 4 is in real-time meshing with the worm gear 1-4 on the runner 1, so that the runner 1 rotates around its axis. The runner 1 cooperates with the hole positioning post 3-1 of the valve blade 3 through the runner positioning hole 1-2, so that the hole positioning post 3-1 rotates. The slideway positioning post 3-2 of the valve blade 3 cooperates with the mounting seat positioning slideway 2-2 of the valve mounting seat 2. And the valve mounting seat 2 is fixed to the channel flange 6-2 through the flange hole 2-5, so that the slideway positioning post 3-2 will move in a straight line along the radial direction. Under the combined action of the rotation of the hole positioning post 3-1 and the straight-line movement of the slideway positioning post 3-2, the valve blade 3 will move, resulting in a change in the cross-sectional area of the annular cross-section channel 6-6, so as to achieve the purpose of regulating the flow rate. And 8 valve blades 3 move together, and the changed cross-section is an axisymmetric figure, which can ensure the circumferential uniformity of the gas.

[0035] In this embodiment, for the fan / compressor aerodynamic performance test, it is necessary to measure the fluid aerodynamic parameters in the channel at different flow rates. The test has relatively high requirements for the flow field uniformity. Therefore, it is necessary to ensure good circumferential uniformity of the fluid while regulating the flow rate of the fan / compressor annular channel.

[0036] The above are only the preferred embodiments of the present invention; they are not intended to limit the present invention; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A circular pipeline flow regulating device based on an iris mechanism, characterized in that It includes a runner (1), a valve mounting seat (2) and a channel (6). The runner (1) includes a fixing ring (1-1), and a turbine (1-4) is arranged on the outer side of the fixing ring (1-1); Two valve mounting seats (2) are provided, and the two valve mounting seats (2) are respectively installed on both axial sides of the runner (1). A valve vane (3) is arranged between the valve mounting seat (2) and the runner (1). The channel (6) is coaxially arranged in the runner (1). A worm (4) is meshed and connected to the turbine (1-4), and the worm (4) is connected to a motor (5) to achieve driving; Among them, the motor (5) drives the worm (4) to drive the fixing ring (1-1) to rotate, and then makes the valve vane (3) move to change the cross-sectional area of the channel (6), so as to achieve the purpose of regulating the flow rate.

2. The annular pipeline flow regulating device based on the iris mechanism according to claim 1, characterized in that, The runner (1) is of a circular ring structure. A convex structure for nested and mating installation with the valve mounting seat (2) is arranged along the axial direction on the outer edge of the fixing ring (1-1); Positioning holes (1-2) are arranged on the fixing ring (1-1); The valve mounting seat (2) includes a nested ring (2-1), a flange ring (2-4), a connecting ring (2-6), a positioning slideway (2-2) and a flange hole (2-5); The positioning slideway (2-2) and the extended positioning slideway (2-3) are arranged on the nested ring (2-1), and the flange hole (2-5) is arranged on the flange ring (2-4). The connecting ring (2-6) is arranged between the nested ring (2-1) and the flange ring (2-4) to connect the nested ring (2-1) and the flange ring (2-4); The convex structure of the fixing ring (1-1) is installed in cooperation with the nested ring (2-1) to make the device closed in the radial direction; The valve vanes (3) are symmetrically arranged between the runner (1) and the valve mounting seat (2). The valve vanes (3) are connected to the runner (1) through hole positioning columns (3-1) and the positioning holes (1-2) arranged on the runner (1). The valve vanes (3) are connected to the valve mounting seat (2) through slideway positioning columns (3-2) and the positioning slideway (2-2) on the valve mounting seat (2); At the same time, under the combined action of the rotation of the valve vane (3) through the hole positioning column (3-1) and the linear movement of the slideway positioning column (3-2), the valve vane (3) generates a radial movement to change the cross-sectional area of the channel (6).

3. The annular pipeline flow regulating device based on an iris mechanism according to claim 2, wherein, Four valve vanes (3) are provided. The four valve vanes (3) are stacked in sequence to form a group of valve vanes. Two groups of valve vanes (3) are symmetrically arranged between the runner (1) and the valve mounting seat (2).

4. The annular pipeline flow regulating device based on the iris mechanism according to claim 2, characterized in that, An extended positioning hole (1-3) is also arranged on the fixing ring (1-1), and an extended positioning slideway (2-3) corresponding to the extended positioning hole (1-3) is also arranged on the nested ring (2-1); The valve vane (3) is connected to the extended positioning hole (1-3) and the extended positioning slideway (2-3) through a slideway positioning column (3-2) corresponding to the extended positioning hole (1-3); Extended positioning holes (1-3) and extended positioning chutes (2-3) are used to make each valve blade (3) contact both the runner (1) and the valve mounting seat (2), so that the movable runner (1), the valve mounting seat (2) and the valve blade (3) are tightly fixed axially, achieving stable and accurate movement between components.

5. The annular pipeline flow regulating device based on the iris mechanism according to claim 4, characterized in that, Three of the described extended positioning holes (1-3) are respectively arranged on both sides of the fixed ring (1-1), and the distances that the three extended positioning holes (1-3) extend from the fixed ring (1-1) are respectively one time, two times and three times the thickness of the valve blade (3).

6. The annular pipeline flow regulating device based on the iris mechanism according to claim 4, characterized in that, Three of the described extended positioning chutes (2-3) are provided, and the distances that the three extended positioning chutes (2-3) extend from the nested ring (2-1) are respectively one time, two times and three times the thickness of the valve blade (3).

7. The annular pipeline flow regulating device based on an iris mechanism according to claim 1, characterized in that, The described valve blade (3) has an arc-shaped structure, and the inner diameter of the arc-shaped structure of the valve blade (3) is the same as the inner diameters of the fixed ring (1-1) and the nested ring (2-1).

8. A circular pipeline flow regulating device based on an iris mechanism according to any one of claims 1-7, characterized in that, The described channel (6) is composed of an inner channel (6-3) and an outer channel (6-1). The inner channel (6-3) and the outer channel (6-1) are welded into an integral structure by a streamlined wing plate (6-4); the inner channel (6-3) itself is a circular cross-section channel, and the inner channel (6-3) and the outer channel (6-1) form an annular cross-section channel (6-6). The movement of the valve blade (3) realizes the change of the cross-sectional area of the annular cross-section channel (6-6).

9. The annular pipeline flow regulating device based on an iris mechanism according to claim 8, wherein The cross-section of the described wing plate (6-4) is streamlined to reduce the influence on the air flow in the pipeline; a channel flange (6-2) connected to the flange hole (2-5) of the valve mounting seat (2) is provided on the outer channel (6-1), and the outer channel (6-1) is connected to the valve mounting seat (2) through the channel flange (6-2).

10. The annular pipeline flow regulating device based on the iris mechanism according to claim 8, characterized in that, The inner channel (6-3) and the outer channel (6-1) are welded into an integral structure by four streamlined wing plates (6-4).

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