Plug-in vortex shedding flowmeter

Abstract

The utility model provides a plug-in type vortex shedding flowmeter which comprises a plug-in type vortex shedding flowmeter body, the bottom end of the plug-in type vortex shedding flowmeter body is connected with a connecting pipe, and the two sides of the plug-in type vortex shedding flowmeter body are respectively provided with a first arc-shaped clamping plate and a second arc-shaped clamping plate in an attached and sleeved mode. According to the plug-in vortex shedding flowmeter, the plug-in vortex shedding flowmeter body is clamped by the first arc-shaped clamping plate and the second arc-shaped clamping plate, and the first arc-shaped clamping plate and the second arc-shaped clamping plate are fixedly connected with the connecting pipe through the connecting bent rod, the first pipe clamp and the second pipe clamp; the installation stress point of the plug-in vortex shedding flowmeter body and the connecting area of the plug-in vortex shedding flowmeter body and the connecting pipe are increased, installation is more stable, it is guaranteed that when the plug-in vortex shedding flowmeter body works, the vortex shedding flowmeter cannot shake or move due to too large impact force of fluid in a pipeline, the stability of the vortex shedding flowmeter in the using process is guaranteed, and the service life of the vortex shedding flowmeter is prolonged. And the detection accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flowmeters, and more specifically, particularly relates to an insertion type vortex flowmeter. Background Art

[0002] The vortex flowmeter is a volume flowmeter that measures the volume flow rate of gas, steam or liquid, the volume flow rate under standard conditions or the mass flow rate based on the Karman vortex principle. It is characterized by small pressure loss, large measuring range, high precision, and is almost unaffected by parameters such as fluid density, pressure, temperature, viscosity, etc. when measuring the volume flow rate under working conditions. It has no movable mechanical parts, high measurement accuracy, compact structure and convenient maintenance. Therefore, it has high reliability and low maintenance. The instrument parameters can be stable for a long time. The insertion vortex flowmeter uses a piezoelectric stress sensor with high reliability. It can work in the operating temperature range of -20℃ to +250℃. It has analog standard signals and digital pulse signal outputs. It is easy to use with digital systems such as computers. It is a relatively advanced and ideal flow meter. The insertion vortex flowmeter has high cost performance and can be widely used in the flow measurement of various large-diameter pipeline gases, liquids and steam.

[0003] When installing the existing insertion vortex flowmeter, the detection head of the insertion vortex flowmeter is inserted into the pipeline. When the fluid passes through the vortex flowmeter, if the flow rate of the fluid inside the pipeline is large, it is easy to cause the vortex flowmeter to shake, affecting the flow detection data, making the measurement data inaccurate, and reducing the measurement accuracy of the vortex flowmeter.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an insertion vortex flowmeter is provided to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an insertion type vortex flowmeter to solve the problem that when the existing insertion type vortex flowmeter is installed, the detection head of the insertion type vortex flowmeter is inserted into the pipeline. When the fluid passes through the vortex flowmeter, if the flow rate of the fluid inside the pipeline is large, it is easy to cause the vortex flowmeter to shake, affecting the flow detection data, making the measurement data inaccurate, and reducing the measurement accuracy of the vortex flowmeter.

[0006] The purpose and effect of the plug-in vortex flowmeter of the utility model are achieved by the following specific technical means:

[0007] An insertion type vortex flowmeter comprises an insertion type vortex flowmeter body, the bottom end of the insertion type vortex flowmeter body is connected to a connecting pipe, the two sides of the insertion type vortex flowmeter body are respectively fitted with a first arc clamp and a second arc clamp, the first arc clamp and the second arc clamp are connected by a first screw and a first nut, the outer sides of the first arc clamp and the second arc clamp are respectively connected to three connecting bent rods, the bottom ends of the three connecting bent rods are commonly connected to a first pipe clamp, one end of the first pipe clamp is hinged to a second pipe clamp, the first pipe clamp and the second pipe clamp are both sleeved on the outer wall of the connecting pipe, and the other ends of the first pipe clamp and the second pipe clamp are connected by a second screw and a second nut.

[0008] Furthermore, the insertable vortex flowmeter body is externally sleeved with two mounting flanges, a sealing gasket is clamped between the two mounting flanges, and the top and bottom of the sealing gasket are both connected to foam rubber pads.

[0009] Furthermore, a flange short tube is fixed to the lower ends of the two mounting flanges along the axial direction, the flange short tube is connected to the connecting tube, an insertion tube is provided inside the flange short tube, a vortex street detection head is connected to the bottom end of the insertion tube, and the insertion tube and the vortex street detection head are both arranged inside the connecting tube.

[0010] Furthermore, the inner sides of the first arc-shaped clamping plate and the second arc-shaped clamping plate are both connected with rubber pads that fit the insertable vortex flowmeter body, and the top of the insertable vortex flowmeter body is connected with a converter.

[0011] Furthermore, the other end of the first pipe clamp is connected to an upper connecting plate, the other end of the second pipe clamp is connected to a lower connecting plate, and one end of the second screw passes through the upper connecting plate and the upper connecting plate and is threadedly connected to the second nut.

[0012] Furthermore, the outer wall of the insertion tube is covered with a corrosion-resistant layer.

[0013] Furthermore, both ends of the connecting pipe are fixedly connected with connecting flanges.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. In the utility model, the first arc-shaped clamping plate and the second arc-shaped clamping plate are used to clamp the insertion type vortex flowmeter body, and the first arc-shaped clamping plate and the second arc-shaped clamping plate are connected and fixed to the connecting pipe by using the connecting bent rod and the first pipe clamp and the second pipe clamp, so as to increase the installation force points of the insertion type vortex flowmeter body and the connection area with the connecting pipe, and the installation is more stable, so as to ensure that the insertion type vortex flowmeter body will not shake or displace due to the large impact force of the fluid in the pipeline when working, thereby ensuring the stability of the vortex flowmeter when in use and improving the accuracy of detection;

[0016] 2. By setting the inserted vortex flowmeter body, mounting flange, sealing gasket and foam rubber pad for use together, the sealing gasket and foam rubber pad are used to increase the connection sealing and stability between the two mounting flanges, which can avoid loose installation. After working for a long time, the installation strength is still firm and tough, which can avoid loosening of the mounting flange part, and further improve the stability of the inserted vortex flowmeter body during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structure diagram of the utility model. Figure 1 .

[0018] Figure 2 This is a three-dimensional structure diagram of the utility model. Figure 2 .

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the insertion type vortex flowmeter body of the utility model.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the first arc-shaped clamping plate and the second arc-shaped clamping plate of the utility model.

[0021] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0022] 1. Insertion type vortex flowmeter body; 2. Mounting flange; 3. Sealing gasket; 4. Flange short pipe; 5. Insertion tube; 6. Vortex detection head; 7. Converter; 8. Connecting pipe; 9. Connecting flange; 10. First arc-shaped clamp; 11. Second arc-shaped clamp; 12. Rubber pad; 13. First screw; 14. First nut; 15. Connecting bent rod; 16. First pipe clamp; 17. Second pipe clamp; 18. Upper connecting plate; 19. Lower connecting plate; 20. Second screw; 21. Second nut. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example:

[0027] As attached Figure 1 To Attachment Figure 4 As shown:

[0028] The utility model provides an insertion type vortex flowmeter, comprising an insertion type vortex flowmeter body 1, wherein the bottom end of the insertion type vortex flowmeter body 1 is connected with a connecting pipe 8, a first arc-shaped clamping plate 10 and a second arc-shaped clamping plate 11 are respectively fitted and sleeved on both sides of the insertion type vortex flowmeter body 1, the first arc-shaped clamping plate 10 and the second arc-shaped clamping plate 11 are connected by a first screw 13 and a first nut 14, three connecting bent rods 15 are respectively connected to the outer sides of the first arc-shaped clamping plate 10 and the second arc-shaped clamping plate 11, the bottom ends of the three connecting bent rods 15 are commonly connected with a first pipe clamp 16, one end of the first pipe clamp 16 is hinged with a second pipe clamp 17, the first pipe clamp 16 and the second pipe clamp 17 are both sleeved on the outer wall of the connecting pipe 8, and the other ends of the first pipe clamp 16 and the second pipe clamp 17 are connected by a second screw 20 and a second nut 21.

[0029] In other embodiments, two mounting flanges 2 are sleeved on the outside of the inserted vortex flowmeter body 1, a sealing gasket 3 is clamped between the two mounting flanges 2, and the top and bottom of the sealing gasket 3 are connected to foam rubber pads. The sealing gasket 3 and the foam rubber pad are used to increase the connection sealing and stability between the two mounting flanges 2, which can avoid loose installation. After working for a long time, the installation strength is still strong and the toughness is good, which can avoid loosening of the mounting flange 2 part, and further improve the stability of the inserted vortex flowmeter body 1 during installation.

[0030] In other embodiments, a flange short tube 4 is fixed to the lower ends of the two mounting flanges 2 along the axial direction, the flange short tube 4 is connected to the connecting tube 8, an insertion tube 5 is provided inside the flange short tube 4, the bottom end of the insertion tube 5 is connected to a vortex street detection head 6, the insertion tube 5 and the vortex street detection head 6 are both arranged inside the connecting tube 8, when the medium passes through the connecting tube 8, a vortex will be formed inside the connecting tube 8, this vortex will cause the vortex street detection head 6 suspended inside the connecting tube 8 to vibrate, the frequency of the vibration is proportional to the flow velocity of the medium, by measuring the frequency of the vibration of the vortex street detection head 6, the flow velocity of the medium can be indirectly obtained.

[0031] In other embodiments, the inner sides of the first arc-shaped clamping plate 10 and the second arc-shaped clamping plate 11 are connected with rubber pads 12 that fit the inserted vortex flowmeter body 1. The top of the inserted vortex flowmeter body 1 is connected with a converter 7 to transmit the flow velocity signal of the medium to the converter 7 for easy viewing and recording. The rubber pad 12 can make the first arc-shaped clamping plate 10 and the second arc-shaped clamping plate 11 fit the inserted vortex flowmeter body 1 better when squeezing and fixing the inserted vortex flowmeter body 1, and can increase the friction between the first arc-shaped clamping plate 10 and the second arc-shaped clamping plate 11 and the inserted vortex flowmeter body 1, thereby improving the squeezing and fixing effect.

[0032] In other embodiments, the other end of the first pipe clamp 16 is connected to the upper connecting plate 18, the other end of the second pipe clamp 17 is connected to the lower connecting plate 19, one end of the second screw 20 passes through the upper connecting plate 18 and the upper connecting plate 18 and is threadedly connected to the second nut 21. The second screw 20 and the second nut 21 can be used to fix the first pipe clamp 16 and the second pipe clamp 17 on the outer wall of the connecting pipe 8, thereby ensuring the stability of the inserted vortex flowmeter body 1 after installation.

[0033] In other embodiments, the outer wall of the insertion tube 5 is covered with a corrosion-resistant layer to prevent corrosion from the outside air and direct contact with moisture, thereby extending the service life and increasing the service life of the insertion tube 5.

[0034] In other embodiments, both ends of the connecting pipe 8 are fixedly connected with connecting flanges 9, and the connecting pipe 8 is used to connect to the fluid pipeline to facilitate the fluid in the fluid pipeline to pass through the inserted vortex flowmeter body 1. The connecting flange 9 keeps the connecting pipe 8 fixed to the fluid pipeline, thereby maintaining the stability of the connecting pipe 8.

[0035] The specific usage and function of this embodiment are as follows:

[0036] In the utility model, the working principle of the insertion type vortex flowmeter is based on the vortex effect; when the insertion type vortex flowmeter body 1 is installed on the connecting pipe 8, at this time, the insertion pipe 5 and the vortex detection head 6 are both arranged inside the connecting pipe 8, the first arc-shaped clamping plate 10 and the second arc-shaped clamping plate 11 are sleeved on the outer side of the insertion type vortex flowmeter body 1, and the first screw 13 and the first nut 14 are used to fix them, at the same time, the first pipe clamp 16 is sleeved on the outer wall of the connecting pipe 8, and the second pipe clamp 17 is rotated to clamp it on the outer wall of the connecting pipe 8. The first pipe clamp 16 and the second pipe clamp 17 can be fixed to the outer wall of the connecting pipe 8 by the second screw 20 and the second nut 21, thereby increasing the installation force point of the insertion type vortex flowmeter body 1 and the connection area with the connecting pipe 8, and the installation is more stable, ensuring that the insertion type vortex flowmeter body 1 will not shake or displace due to the large impact force of the fluid in the connecting pipe 8 when working, thereby ensuring the stability of the insertion type vortex flowmeter body 1 when in use, and improving the accuracy during detection;

[0037] When the medium passes through the connecting pipe 8, a vortex will be formed in the connecting pipe 8. This vortex will cause the vortex street probe 6 suspended inside the connecting pipe 8 to vibrate. The frequency of the vibration is proportional to the flow velocity of the medium. By measuring the vibration frequency of the vortex street probe 6, the flow velocity of the medium can be indirectly obtained. The flow velocity signal of the medium is transmitted to the converter 7, and the record can be checked.

[0038] It should be noted that the specific model specifications of the inserted vortex flowmeter body 1, vortex detection head 6 and converter 7 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail. The inserted vortex flowmeter body 1, vortex detection head 6 and converter 7 are devices or equipment that exist in the prior art, or are devices or equipment that can be realized by the prior art. Their power supply, specific composition and principles are clear to those skilled in the art and are common knowledge in the field, so they will not be described in detail.

[0039] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An insertion type vortex flowmeter, characterized in that: The invention comprises an insertable vortex flowmeter body (1), wherein the bottom end of the insertable vortex flowmeter body (1) is connected to a connecting pipe (8), and the first arc-shaped clamping plate (10) and the second arc-shaped clamping plate (11) are respectively fitted and sleeved on both sides of the insertable vortex flowmeter body (1), and the first arc-shaped clamping plate (10) and the second arc-shaped clamping plate (11) are connected to each other through a first screw (13) and a first nut (14), and the outer sides of the first arc-shaped clamping plate (10) and the second arc-shaped clamping plate (11) are respectively connected to three connecting bent rods (15), and the bottom ends of the three connecting bent rods (15) are commonly connected to a first pipe clamp (16), and one end of the first pipe clamp (16) is hinged to a second pipe clamp (17), and the first pipe clamp (16) and the second pipe clamp (17) are both sleeved on the outer wall of the connecting pipe (8), and the other ends of the first pipe clamp (16) and the second pipe clamp (17) are connected to each other through a second screw (20) and a second nut (21).

2. The insertion type vortex flowmeter according to claim 1, characterized in that: The insertable vortex flowmeter body (1) is externally sleeved with two mounting flanges (2), a sealing gasket (3) is clamped between the two mounting flanges (2), and the top and bottom of the sealing gasket (3) are both connected to foam rubber pads.

3. The insertion type vortex flowmeter according to claim 2, characterized in that: A flange short tube (4) is fixed along the axial direction at the lower ends of the two mounting flanges (2); the flange short tube (4) is connected to a connecting tube (8); an insertion tube (5) is arranged inside the flange short tube (4); a vortex street detection head (6) is connected to the bottom end of the insertion tube (5); and the insertion tube (5) and the vortex street detection head (6) are both arranged inside the connecting tube (8).

4. The insertion type vortex flowmeter according to claim 1, characterized in that: The inner sides of the first arc-shaped clamping plate (10) and the second arc-shaped clamping plate (11) are both connected with rubber pads (12) that fit the insertion type vortex flowmeter body (1), and the top end of the insertion type vortex flowmeter body (1) is connected with a converter (7).

5. The insertion type vortex flowmeter according to claim 1, characterized in that: The other end of the first pipe clamp (16) is connected to an upper connecting plate (18), the other end of the second pipe clamp (17) is connected to a lower connecting plate (19), and one end of the second screw (20) passes through the upper connecting plate (18) and the upper connecting plate (18) and is threadedly connected to a second nut (21).

6. The insertion type vortex flowmeter according to claim 3, characterized in that: The outer wall of the insertion tube (5) is covered with a corrosion-resistant layer.

7. The insertion type vortex flowmeter according to claim 1, characterized in that: Both ends of the connecting pipe (8) are fixedly connected with connecting flanges (9).

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