Variable orifice plate flowmeter

Abstract

The application relates to the technical field of flow measurement, and discloses a variable orifice plate flowmeter, which comprises a valve body, the valve body is provided with a flow cavity, an inlet is arranged on the valve body and communicates with the flow cavity, an outlet is arranged on the valve body and communicates with the flow cavity, a throttling port is arranged in the flow cavity and communicates with the inlet and the outlet respectively, a support plate is arranged on the valve body and located between the inlet and the throttling port, a guide rod is arranged on one end of the support plate and has the other end as a support end, a valve core is slidably arranged in the flow cavity, a first elastic member is arranged on one end of the valve core and the other end of the first elastic member is arranged on the support end, and the first elastic member is used for providing a force for closing the throttling port by the valve core. Through the technical scheme, the problem that a flowmeter with a larger range needs to be replaced after the flow exceeds the fixed range of the flowmeter in the related art is solved, and the process is complicated.

Description

Technical Field

[0001] This invention relates to the field of flow measurement technology, and more specifically, to a variable orifice plate flow meter. Background Technology

[0002] An orifice plate flow meter is a differential pressure flow device composed of a standard orifice plate and a multi-parameter differential pressure transmitter. It can measure the flow rate of gas, steam, liquid and natural gas. However, the range of traditional orifice plate flow meters is fixed. When the flow rate exceeds the fixed range of the flow meter, it is necessary to replace it with a flow meter with a larger range, which is a complicated process. Summary of the Invention

[0003] This invention proposes a variable orifice plate flow meter, which solves the problem in related technologies that when the flow rate exceeds the fixed range of the flow meter, it is necessary to replace it with a flow meter with a larger range, which involves a complicated process.

[0004] The technical solution of the present invention is as follows: A variable orifice plate flow meter, comprising: Valve body, the valve body having a flow cavity; An inlet is provided on the valve body, and the inlet communicates with the flow cavity; An outlet is provided on the valve body, and the outlet is in communication with the flow cavity; A throttling component is disposed within the flow cavity and is connected to both the inlet and the outlet. A support plate is disposed on the valve body and located between the inlet and the throttling assembly; The guide rod has one end mounted on the support plate and the other end serving as a support end. The valve core is slidably disposed within the flow cavity; The first elastic element, with one end disposed on the valve core and the other end disposed on the support end, is used to provide the force for the valve core to close the throttling assembly.

[0005] As a further technical solution, the guide rod has a thread, and the guide rod is adjustablely positioned on the support plate via the thread.

[0006] As a further technical solution, the valve core has a guide slope.

[0007] As a further technical solution, the throttling component includes: A plurality of arc-shaped plates are provided, and one end of each of the arc-shaped plates is sealed on the valve body and located within the flow cavity; The first flexible element, wherein a plurality of the arc-shaped plates are disposed on the valve body via the first flexible element; A plurality of magnetic plates are provided, each of which is sealed at the other end of a plurality of arc-shaped plates. The magnetic plates are connected end to end to form a ring, and each of the magnetic plates has magnetic force. The second flexible element is of several kinds, and the several second flexible elements are respectively sealed and disposed between two adjacent arc-shaped plates.

[0008] An elastic sleeve is disposed on the outside of the plurality of magnetic plates to provide a force that brings the plurality of magnetic plates closer together.

[0009] A magnetic induction coil is wound around the outside of the valve body. When the magnetic induction coil is energized, it is used to provide the valve body with magnetic force to attract the magnetic plate.

[0010] As a further technical solution, a housing is also provided on the outside of the magnetic coil, the housing being used to protect the magnetic coil.

[0011] As a further technical solution, it also includes: A pressure sensor is disposed within the flow cavity, and the pressure sensor is used to cooperate with the magnetic coil.

[0012] As a further technical solution, each of the several arc-shaped plates has a groove, and the throttling component further includes: The slider is provided in a plurality of parts, and the plurality of sliders are respectively slidably disposed in the plurality of grooves, and the plurality of second flexible members each have a connecting end; The second elastic element has a plurality of them. One end of each of the second elastic elements is respectively disposed on the connecting end of the plurality of second flexible elements, and the other end is respectively disposed on the plurality of sliders. The second elastic element is used to provide the second flexible element with an outward folding force.

[0013] The working principle and beneficial effects of this invention are as follows: In this invention, the orifice plate flow meter is a device used to measure the flow rate of gas, steam, liquid and natural gas. However, the range of traditional flow meters is fixed. When the flow rate exceeds the fixed range of the flow meter, it is necessary to replace it with a flow meter with a larger range, which is a cumbersome process. This solution is equipped with a valve body. Gas, steam, liquid and natural gas enter the flow cavity through the inlet. When passing through the throttling orifice, the guide rod drives the valve core to slide, thereby adjusting the throttling orifice and changing the flow rate through the throttling orifice. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the first structure of the present invention; Figure 2This is an axial side view of the present invention; Figure 3 This is a schematic diagram of the second structure of the present invention; Figure 4 for Figure 3 Enlarged view of a portion at point A; In the diagram: 1. Valve body, 2. Flow cavity, 3. Inlet, 4. Outlet, 5. Throttling port, 6. Support plate, 7. Guide rod, 8. Valve core, 9. First elastic element, 10. Guide slope, 11. Arc plate, 12. First flexible element, 13. Magnetic plate, 14. Second flexible element, 15. Elastic sleeve, 16. Magnetic coil, 17. Pressure sensor, 18. Slide groove, 19. Slider, 20. Second elastic element. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0017] Example like Figures 1-4 As shown, this embodiment proposes... A variable orifice plate flow meter, comprising: Valve body 1, valve body 1 has a flow cavity 2; Inlet 3 is located on valve body 1 and is connected to flow cavity 2; Outlet 4 is located on valve body 1 and is connected to flow cavity 2; A throttling component is disposed within the flow cavity 2 and is connected to the inlet 3 and the outlet 4 respectively; Support plate 6 is mounted on valve body 1 and located between inlet 3 and throttling assembly; The guide rod 7 has one end mounted on the support plate 6 and the other end as a support end; Valve core 8 is slidably disposed within flow cavity 2; The first elastic element 9, with one end disposed on the valve core 8 and the other end disposed on the support end, is used to provide the force for the valve core 8 to close the throttling assembly.

[0018] In this embodiment, the orifice plate flow meter is a device used to measure the flow rate of gas, steam, liquid and natural gas. However, the range of traditional flow meters is fixed. When the flow rate exceeds the fixed range of the flow meter, it is necessary to replace it with a flow meter with a larger range, which is a cumbersome process. This solution is equipped with a valve body 1. Gas, steam, liquid and natural gas enter the flow cavity 2 through the inlet 3. When passing through the throttling component, the guide rod 7 drives the valve core 8 to slide through the first elastic element 9. When the flow rate increases, the gas or liquid pushes the valve core 8. Under the action of the first elastic element 9, the valve core 8 slides along the guide rod 7 to realize the adjustment of the throttling component, thereby changing the flow rate through the throttling component.

[0019] Furthermore, the guide rod 7 has threads, and the guide rod 7 is set on the support plate 6 in an adjustable position via the threads.

[0020] In this embodiment, in order to adjust the range, the guide rod 7 is provided with a thread, and the range can be adjusted by adjusting the distance of the guide rod 7 on the support plate 6.

[0021] Furthermore, the valve core 8 has a guide ramp 10.

[0022] In this embodiment, in order to enable the valve core 8 to slide under the action of gas or liquid, a guide slope 10 is provided on the valve core 8.

[0023] Furthermore, the throttling component includes: There are several arc-shaped plates 11, and one end of each arc-shaped plate 11 is sealed on the valve body 1 and located in the flow cavity 2. The first flexible element 12, and several arc plates 11 are all disposed on the valve body 1 through the first flexible element 12; There are several magnetic plates 13, which are respectively sealed at the other end of several arc-shaped plates 11. The magnetic plates 13 are connected head to head to form a ring, and all of the magnetic plates 13 have magnetic force. The second flexible member 14 is a plurality of them, and the plurality of second flexible members 14 are respectively sealed between two adjacent arc plates 11.

[0024] An elastic sleeve 15 is disposed on the outside of several magnetic plates 13 to provide a force for the several magnetic plates 13 to move closer to each other.

[0025] A magnetic coil 16 is wound around the outside of the valve body 1. When the magnetic coil 16 is energized, it is used to provide the valve body 1 with magnetic force to attract the magnetic plate 13.

[0026] Furthermore, it also includes a housing disposed outside the magnetic induction coil 16, the housing being used to protect the magnetic induction coil 16.

[0027] In this embodiment, to further increase the adjustment range of the flow meter, several arc-shaped plates 11 are mounted on the valve body 1 via a first flexible member 12. Under the action of the first flexible member 12, the arc-shaped plates 11 can be bent. A second flexible member 14 is arranged between the arc-shaped plates 11. The second flexible member 14 can fold or open as the arc-shaped plates 11 bend, thereby adjusting the size of the throttling component. A magnetic plate 13 is provided at the end of the arc-shaped plate 11, and an elastic sleeve 15 is provided on the outside of the magnetic plate 13. Under the action of the elastic sleeve 15, the arc-shaped plate 11 always forms a small-diameter state. A magnetic coil 16 is arranged outside the valve body 1. When the magnetic coil 16 is in operation, the magnetic coil 16 is activated. After the induction coil 16 generates a magnetic field, the magnetic plate 13 will be attracted by the magnetic field, causing the second flexible member 14 to open, so that the arc plate 11 and the second flexible member 14 form a large-diameter state, thereby further increasing the adjustment range of the flow meter. The first flexible member 12 and the second flexible member 14 can be made of elastic material or sealed non-elastic material. In the process of use, the magnetic plate 13 of the elastic material also needs to overcome the elastic force generated by the second flexible member 14 and needs to have stronger adsorption force, but it can automatically shrink more conveniently. When using non-elastic material, it needs to assist in shrinking, but the magnetic plate 13 does not need to have stronger magnetic force.

[0028] Furthermore, it also includes: Pressure sensor 17 is disposed in flow cavity 2 and is used to cooperate with magnetic coil 16.

[0029] In this embodiment, in order to enable the arc plate 11 to open and close with the increase of flow rate, a pressure sensor 17 is provided in the flow cavity 2. When the flow rate of the flow cavity 2 increases, the pressure increases, and the pressure sensor 17 transmits the signal to the magnetic coil 16. When the magnetic coil 16 is energized, the arc plate 11 opens to achieve a large-diameter state.

[0030] Furthermore, each of the several arc-shaped plates 11 has a groove 18, and the throttling assembly also includes: The slider 19 is a plurality of sliders, which are respectively slidably disposed in a plurality of grooves 18, and the plurality of second flexible members 14 each have a connecting end; The second elastic element 20 is a plurality of them. One end of each of the second elastic elements 20 is respectively disposed on the connecting end of the plurality of second flexible elements 14, and the other end is respectively disposed on the plurality of sliders 19. The second elastic element 20 is used to provide the force for the second flexible element 14 to fold outward.

[0031] In this embodiment, the second flexible member 14 is in a folded state when the magnetic coil 16 is not energized. However, if the second flexible member 14 is folded inward, it is easily worn and damaged by airflow or liquid. Therefore, this solution is provided with a slider 19 and a second elastic member 20. The second flexible member 14 has a connecting end, and one end of the second elastic member 20 is disposed on the elastic member. When the arc plate 11 contracts, the second flexible member 14 will fold outward under the action of the second elastic member 20, thereby avoiding damage to the second flexible member 14.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A variable orifice plate flow meter, characterized in that, include: Valve body (1), the valve body (1) having a flow cavity (2); An inlet (3) is provided on the valve body (1), and the inlet (3) is connected to the flow cavity (2); An outlet (4) is provided on the valve body (1), and the outlet (4) is connected to the flow cavity (2); A throttling component (5) is disposed in the flow cavity (2) and is connected to the inlet (3) and the outlet (4) respectively; A support plate (6) is disposed on the valve body (1) and located between the inlet (3) and the throttling assembly (5); The guide rod (7) has one end set on the support plate (6) and the other end is the support end; The valve core (8) is slidably disposed within the flow cavity (2); The first elastic element (9) has one end disposed on the valve core (8) and the other end disposed on the support end, and is used to provide the force for the valve core (8) to close the throttling assembly (5); The throttling component (5) includes: A plurality of arc-shaped plates (11) are provided, and one end of each of the arc-shaped plates (11) is sealed on the valve body (1) and located in the flow cavity (2); The first flexible element (12) is used to assemble a plurality of the arc-shaped plates (11) on the valve body (1). A plurality of magnetic plates (13) are provided, and the plurality of magnetic plates (13) are respectively sealed at the other end of the plurality of arc-shaped plates (11). The plurality of magnetic plates (13) are connected end to end to form a ring. The plurality of magnetic plates (13) all have magnetic force. The second flexible element (14) is a plurality of such elements, and the plurality of the second flexible elements (14) are respectively sealed between two adjacent arc-shaped plates (11); An elastic sleeve (15) is disposed on the outside of a plurality of magnetic plates (13) to provide a force for the plurality of magnetic plates (13) to move closer to each other; A magnetic coil (16) is wound around the outside of the valve body (1). When the magnetic coil (16) is energized, it is used to provide the valve body (1) with magnetic force to attract the magnetic plate (13).

2. The variable orifice plate flow meter according to claim 1, characterized in that, The guide rod (7) has threads and is mounted on the support plate (6) in an adjustable position via the threads.

3. A variable orifice plate flow meter according to claim 1, characterized in that, The valve core (8) has a guide slope (10).

4. A variable orifice plate flow meter according to claim 1, characterized in that, It also includes a housing disposed outside the magnetic induction coil (16), the housing being used to protect the magnetic induction coil (16).

5. A variable orifice plate flow meter according to claim 1, characterized in that, Also includes: A pressure sensor (17) is disposed in the flow cavity (2) and is used to cooperate with the magnetic coil (16).

6. A variable orifice plate flow meter according to claim 1, characterized in that, Each of the arc-shaped plates (11) has a groove (18), and the throttling assembly (5) further includes: The slider (19) is of several kinds, and the several sliders (19) are respectively slidably disposed in the several grooves (18), and the several second flexible members (14) all have connecting ends; The second elastic element (20) has a plurality of them. One end of each of the second elastic elements (20) is respectively disposed on the connecting end of the plurality of second flexible elements (14), and the other end is respectively disposed on the plurality of sliders (19). The second elastic element (20) is used to provide the force for the second flexible element (14) to fold outward.

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