Single-point small-section throttling device

Abstract

The utility model discloses a single-point small-section throttling device which comprises a throttling element, a detection mechanism is arranged at the top of the throttling element, a first pore plate is fixedly installed in the throttling element, second pore plates are connected to the two sides of the side wall of the first pore plate in a sliding mode, an adjusting mechanism is arranged at the top of the throttling element, and the first pore plate and the second pore plate are fixedly installed in the throttling element. Connecting rods are fixedly mounted on the side walls of the two second pore plates, and the adjusting mechanism is connected with the second pore plates through the two connecting rods; the positions of the two second pore plates are changed through the adjusting mechanism, so that the size of the internal pore diameter of the throttling element is changed, in the using process of the device, the throttling element is connected with a to-be-detected pipeline to detect the flow of the to-be-detected pipeline, the throttling element is matched with the detection mechanism to perform detection, and the detection efficiency is improved. In addition, the size of the hole diameter in the hole plate has direct influence on the measurement precision, and the applicability of the device to different detection conditions is improved by changing the size of the hole diameter in the throttling element.

Description

Technical Field

[0001] The utility model relates to the technical field of throttling devices, in particular to a single-point small-section throttling device. Background Art

[0002] A throttling device is a device used in a pipeline to limit the flow rate of a fluid or change the flow rate of the fluid. It is based on the Bernoulli fluid mechanics principle and limits the flow rate of the fluid by changing the cross-sectional area of ​​the pipeline or increasing the friction resistance. Common throttling principles include orifice throttling, throttling valves, throttling holes, etc.

[0003] The working principle of the throttling device is based on the fact that when the fluid moves in the pipeline, it will form a local reduction in diameter when flowing through the preset throttling device, thereby increasing the flow rate of the fluid medium and reducing the hydrostatic pressure. This condition will cause a pressure drop (pressure difference) upstream and downstream of the throttling device.

[0004] As a special throttling device, the single-point small-section throttling device has its unique characteristics. It limits the flow rate and flow velocity of the fluid by reducing the cross-sectional area of ​​a certain point in the pipeline, thereby achieving precise control and measurement. This device has a wide range of application prospects in occasions that require high-precision flow control and measurement.

[0005] In summary, as an important flow control and measurement tool, the single-point small-section throttling device plays an important role in industrial production and civil facilities.

[0006] In the existing single-point small-section throttling device, when measuring the fluid, the aperture size on the orifice plate has a direct impact on the measurement accuracy. The aperture size directly determines the measurement range of the flow meter. Smaller apertures are usually suitable for smaller flow ranges, while larger apertures are suitable for larger flow ranges. Therefore, by changing the aperture size, the measurement range of the flow meter can be adjusted according to actual needs. However, the apertures on the orifice plates of the existing single-point small-section throttling devices are all fixed values. Utility Model Content

[0007] The purpose of the present invention is to provide a single-point small-section throttling device to solve the above-mentioned deficiencies in the prior art.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a single-point small-section throttling device, including a throttling member, a detection mechanism is arranged on the top of the throttling member, a first orifice plate is fixedly installed inside the throttling member, second orifice plates are slidably connected to both sides of the side wall of the first orifice plate, an adjustment mechanism is arranged on the top of the throttling member, connecting rods are fixedly installed on the side walls of the two second orifice plates, and the adjustment mechanism is connected to the second orifice plate through the two connecting rods.

[0009] As a further description of the above technical solution: the detection mechanism includes a flow meter, which is arranged on the top of the throttling device, and connecting rods are fixedly installed at both ends of the bottom of the flow meter, and the two connecting rods pass through the top of the throttling device and are fixedly connected to the throttling device, and the first orifice plate and the two second orifice plates are arranged between the two connecting rods.

[0010] As a further description of the above technical solution: the adjusting mechanism includes a rotating shaft, which is rotatably installed on the top of the throttling member, and the bottom end of the rotating shaft passes through the top of the throttling member and is fixedly connected to a gear, and racks are provided on both sides of the gear, and the two racks are meshed with the gears, and the bottoms of the two racks are respectively fixedly connected to the tops of the two connecting rods, and the top of the rotating shaft is fixedly connected to a turntable.

[0011] As a further description of the above technical solution: rubber pads are fixedly installed on the side walls of the two second orifice plates that are close to each other.

[0012] As a further description of the above technical solution: a mounting block is fixedly installed on the top of the throttling device, a stud is fixedly connected to the top of the mounting block, a screw sleeve is threadedly connected to the top of the stud, a chuck is rotatably connected to the top of the screw sleeve, the rotating shaft passes through the stud, the screw sleeve and the top of the chuck respectively, limiting columns are fixedly installed on both sides of the top of the mounting block, connecting blocks are fixedly installed on both sides of the chuck, two connecting blocks are slidably connected to the two limiting columns respectively, and the chuck and the rotating disk are engaged with each other.

[0013] As a further description of the above technical solution: connecting rings are fixedly installed at both ends of the throttling member, and a plurality of connecting bolts are arranged on the two connecting rings.

[0014] The utility model provides a single-point small-section throttling device. It has the following beneficial effects: during the use of the device, the flow of the pipeline to be tested is detected by connecting the throttling device to the pipeline to be tested, and the detection is performed by cooperating with the throttling device and the detection mechanism. In addition, the aperture size on the orifice plate has a direct impact on the measurement accuracy. The position of the two second orifice plates is changed by the adjustment mechanism, so that the size of the internal aperture of the throttling device is changed. The device improves the applicability of the device to different detection situations by changing the size of the internal aperture of the throttling device.

[0015] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0016] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a single-point small-section throttling device proposed by the utility model;

[0018] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the adjustment mechanism of the utility model;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the chuck of the utility model.

[0022] Legend:

[0023] 1. Throttle; 2. First orifice plate; 3. Second orifice plate; 4. Connecting rod; 5. Flow meter; 6. Connecting rod; 7. Rack; 8. Gear; 9. Rotating shaft; 10. Turntable; 11. Rubber pad; 12. Mounting block; 13. Stud; 14. Screw sleeve; 15. Chuck; 16. Limiting column; 17. Connecting block; 18. Connecting ring; 19. Connecting bolt. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-5, a single-point small-section throttling device, comprising a throttling member 1, a detection mechanism is arranged on the top of the throttling member 1, a first orifice plate 2 is fixedly installed inside the throttling member 1, and second orifice plates 3 are slidably connected to both sides of the side wall of the first orifice plate 2, an adjustment mechanism is arranged on the top of the throttling member 1, and connecting rods 6 are fixedly installed on the side walls of the two second orifice plates 3, and the adjustment mechanism is connected to the second orifice plates 3 through the two connecting rods 6; during the use of the device, the flow of the pipeline to be tested is detected by connecting the throttling member 1 to the pipeline to be tested, and the throttling member 1 cooperates with the detection mechanism to perform the detection. In addition, the aperture size on the orifice plate has a direct impact on the measurement accuracy. According to the principle of fluid mechanics, when the fluid passes through the orifice plate, the aperture becomes smaller, the flow rate increases, and the static pressure decreases, thereby generating a pressure difference before and after the orifice plate. There is a certain mathematical relationship between this pressure difference and the flow rate. By adjusting the aperture size, this relationship can be optimized so that within a specific flow range, the changing relationship between the pressure difference and the flow rate is more sensitive and accurate, thereby improving the measurement accuracy. Therefore, in order to cope with detections of different accuracies and different measurement ranges, the positions of the two second orifice plates 3 are changed by adjusting the mechanism to change the size of the internal aperture of the throttling device 1. The device improves the applicability of the device to different detection situations by changing the size of the internal aperture of the throttling device 1.

[0026] As a preferred technical solution of this embodiment, the detection mechanism includes a flow meter 5, which is arranged on the top of the throttling device 1, and connecting rods 4 are fixedly installed at both ends of the bottom of the flow meter 5. The two connecting rods 4 pass through the top of the throttling device 1 and are fixedly connected to the throttling device 1. The first orifice plate 2 and the two second orifice plates 3 are arranged between the two connecting rods 4; the two connecting rods 4 cooperate with the first orifice plate 2, and the flow velocity of the fluid changes after passing through the first orifice plate 2. Different flow velocity data are transmitted to the flow meter 5 through the two connecting rods 4 arranged on both sides of the first orifice plate 2, and specific flow data are obtained through analysis.

[0027] As a preferred technical solution of this embodiment, the adjusting mechanism includes a rotating shaft 9, which is rotatably installed on the top of the throttling member 1, and the bottom end of the rotating shaft 9 passes through the top of the throttling member 1 and is fixedly connected to a gear 8, and racks 7 are provided on both sides of the gear 8, and the two racks 7 are meshed with the gear 8, and the bottoms of the two racks 7 are respectively fixedly connected to the tops of the two connecting rods 6, and the top of the rotating shaft 9 is fixedly connected to a turntable 10; when moving the second orifice plate 3, the turntable 10 is rotated, and the gear 8 is driven to rotate through the turntable 10 and the rotating shaft 9, so that the two racks 7 meshing with the gear 8 on both sides of the gear 8 move toward each other, driving the two second orifice plates 3 to move away from or approach each other.

[0028] As a preferred technical solution of this embodiment, rubber pads 11 are fixedly installed on the side walls of the two second orifice plates 3 close to each other; the rubber pads 11 installed on the two second orifice plates 3 improve the tightness of the gap when the two second orifice plates 3 are in contact.

[0029] As a preferred technical solution of this embodiment, a mounting block 12 is fixedly installed on the top of the throttling member 1, a stud 13 is fixedly connected to the top of the mounting block 12, a screw sleeve 14 is threadedly connected to the top of the stud 13, and a chuck 15 is rotatably connected to the top of the screw sleeve 14. The rotating shaft 9 passes through the tops of the stud 13, the screw sleeve 14 and the chuck 15 respectively. Limiting columns 16 are fixedly installed on both sides of the top of the mounting block 12, and connecting blocks 17 are fixedly installed on both sides of the chuck 15. The two connecting blocks 1 7 are respectively slidably connected with the two limit posts 16, and the chuck 15 is engaged with the turntable 10; when the throttling device 1 is in use, in order to ensure that the positions of the two second orifice plates 3 are fixed, the screw sleeve 14 is rotated so that the screw sleeve 14 continuously rotates upward along the stud 13, driving the chuck 15 to continuously move upward. During the movement, the chuck 15 is always fixed in position under the action of the limit posts 16. When the screw sleeve 14 rotates to the top, the chuck 15 is engaged with the turntable 10, and the turntable 10 is locked under the action of the chuck 15.

[0030] As a preferred technical solution of this embodiment, connecting rings 18 are fixedly installed at both ends of the throttling member 1, and multiple connecting bolts 19 are provided on the two connecting rings 18; the throttling member 1 is connected to the pipeline through the connecting rings 18 and connecting bolts 19 provided at both ends of the throttling member 1.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A single-point small-section throttling device, comprising a throttling element (1), characterized in that: A detection mechanism is arranged on the top of the throttling member (1); a first orifice plate (2) is fixedly installed inside the throttling member (1); second orifice plates (3) are slidably connected to both sides of the side wall of the first orifice plate (2); an adjustment mechanism is arranged on the top of the throttling member (1); connecting rods (6) are fixedly installed on the side walls of the two second orifice plates (3); and the adjustment mechanism is connected to the second orifice plates (3) via the two connecting rods (6).

2. A single-point small cross-section throttling device according to claim 1, characterized in that: The detection mechanism comprises a flow meter (5), the flow meter (5) is arranged on the top of the throttling member (1), and connecting rods (4) are fixedly installed at both ends of the bottom of the flow meter (5), the two connecting rods (4) pass through the top of the throttling member (1) and are fixedly connected to the throttling member (1), and the first orifice plate (2) and the two second orifice plates (3) are arranged between the two connecting rods (4).

3. A single-point small cross-section throttling device according to claim 2, characterized in that: The regulating mechanism comprises a rotating shaft (9), wherein the rotating shaft (9) is rotatably mounted on the top of the throttling member (1), the bottom end of the rotating shaft (9) passes through the top of the throttling member (1) and is fixedly connected to a gear (8), racks (7) are arranged on both sides of the gear (8), the two racks (7) are meshed with the gear (8), the bottoms of the two racks (7) are respectively fixedly connected to the tops of the two connecting rods (6), and the top end of the rotating shaft (9) is fixedly connected to a rotating disk (10).

4. A single-point small cross-section throttling device according to claim 2, characterized in that: Rubber pads (11) are fixedly mounted on the side walls of the two second orifice plates (3) that are close to each other.

5. A single-point small cross-section throttling device according to claim 3, characterized in that: A mounting block (12) is fixedly mounted on the top of the throttling member (1), a stud (13) is fixedly connected to the top of the mounting block (12), a screw sleeve (14) is threadedly connected to the top of the stud (13), a chuck (15) is rotatably connected to the top of the screw sleeve (14), the rotating shaft (9) respectively passes through the tops of the stud (13), the screw sleeve (14) and the chuck (15), limiting columns (16) are fixedly mounted on both sides of the top of the mounting block (12), connecting blocks (17) are fixedly mounted on both sides of the chuck (15), two connecting blocks (17) are respectively slidably connected to the two limiting columns (16), and the chuck (15) and the rotating disk (10) are mutually engaged.

6. A single-point small cross-section throttling device according to claim 4, characterized in that: Connecting rings (18) are fixedly mounted on both ends of the throttling member (1), and a plurality of connecting bolts (19) are arranged on the two connecting rings (18).

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