Low-flow-velocity small-flow vortex shedding flowmeter

Abstract

The utility model belongs to the technical field of vortex shedding flowmeters, and particularly relates to a low-flow-speed small-flow vortex shedding flowmeter which comprises a fixed pipe, a detector fixedly connected to the top of the fixed pipe, a movable cylinder movably connected to the right side of the outer side of the fixed pipe, a stud in threaded connection with the interior of the movable cylinder, and pore plates fixedly connected to the two sides of the interior of the fixed pipe. The left side of the outer side of the fixed pipe and the right side of the outer side of the movable cylinder are fixedly connected with connecting sleeves. According to the vortex shedding flowmeter, the movable cylinder and the stud are arranged, the flowmeter can be conveniently fixed to conveying pipelines at different intervals, the cylinder can move on the outer side of the pipe body by unscrewing the stud, the distance between the two connecting sleeves can be adjusted, and the vortex shedding flowmeter can be conveniently installed between the conveying pipelines at different intervals; after adjustment is completed, the flowmeter can be fixed to the conveying pipeline through the fixing holes, the studs are screwed tightly, and installation is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of vortex flow meter technology, specifically a low-velocity, low-flow-rate vortex flow meter. Background Technology

[0002] Vortex flow meters are researched and manufactured based on the Karman vortex street principle. They are mainly used for measuring the flow rate of fluids in industrial pipelines, such as gases, liquids, and steam. Their characteristics include low pressure loss, a wide measuring range, and high accuracy. When measuring volumetric flow rate under operating conditions, they are almost unaffected by parameters such as fluid density, pressure, temperature, and viscosity. However, ordinary vortex flow meters with excessively high flow velocities and flow rates can easily generate large loads on the vortex generator, leading to a shorter service life. Therefore, a low-velocity, low-flow-rate vortex flow meter has been developed.

[0003] Existing low-velocity, low-flow-rate vortex flow meters are inconvenient to install because the length of the measuring pipe is usually fixed and cannot be adjusted according to the length of the delivery pipes. Summary of the Invention

[0004] The purpose of this invention is to provide a low-velocity, low-flow-rate vortex flow meter that is easy to install, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a low-velocity, low-flow-rate vortex flow meter is provided, including a fixed tube, a detector fixedly connected to the top of the fixed tube, a movable cylinder movably connected to the right side of the outer side of the fixed tube, a stud threadedly connected to the inside of the movable cylinder, perforated plates fixedly connected to both sides of the inside of the fixed tube, connecting sleeves fixedly connected to the left side of the outer side of the fixed tube and the right side of the movable cylinder, the movable cylinder including a cylinder body movably connected to the right side of the outer side of the fixed tube, a movable block fixedly connected to the left side of the inner side of the cylinder body, threaded holes provided inside the cylinder body and the movable block, and a sealing sleeve fixedly connected to the inner side of the cylinder body.

[0006] Optionally, the fixed tube includes a tube body, a vortex generator is fixedly connected inside the tube body, a sliding groove is provided on the right side of the outer side of the tube body, a mounting base is fixedly connected to the top of the tube body, and a sealing gasket is fixedly connected to the top of the mounting base.

[0007] Optionally, the detector includes a fixed plate placed on top of a fixed tube, with a bolt movably connected inside the fixed plate, a nut threaded onto the outside of the bolt, a detection body fixedly connected to the inside of the fixed plate, and a display fixedly connected to the top of the detection body.

[0008] Optionally, the connecting sleeve includes a sleeve body that is fixedly connected to the left side of the fixed tube and the right side of the movable tube, and the sleeve body has a fixing hole inside.

[0009] Optionally, the stud includes a column that is threaded inside the movable cylinder, a screw block is fixedly connected to the end of the column away from the movable cylinder, an anti-slip pad is fixedly connected to the end of the column away from the screw block, and an anti-slip strip is fixedly connected to the side of the anti-slip pad away from the column.

[0010] Optionally, the perforated plate includes a plate body fixedly connected to both sides of the inner side of the fixed tube, and the plate body has through holes inside.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This invention, by setting a movable cylinder and studs, facilitates the fixing of the flow meter to conveying pipes with different spacing. By loosening the studs, the cylinder can move outside the pipe, thereby adjusting the distance between the two connecting sleeves. This allows the vortex flow meter to be placed between conveying pipes with different spacing. After adjustment, the flow meter can be fixed to the conveying pipe through the fixing holes, and then the studs can be tightened to fix the cylinder. The installation is convenient. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the fixing tube of this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the movable cylinder of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the stud of this utility model.

[0018] In the diagram: 1. Fixed pipe; 101. Pipe body; 102. Vortex generator; 103. Slide groove; 104. Sealing gasket; 105. Mounting base; 2. Detector; 201. Display; 202. Detector body; 203. Fixed plate; 204. Bolt; 205. Nut; 3. Connecting sleeve; 301. Sleeve body; 302. Fixing hole; 4. Moving cylinder; 401. Cylinder body; 402. Screw hole; 403. Moving block; 404. Sealing sleeve; 5. Stud; 501. Tightening block; 502. Column body; 503. Anti-slip pad; 504. Anti-slip strip; 6. Orifice plate; 601. Plate body; 602. Through hole. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Reference Figures 1 to 4The present invention will now be described. The low-velocity, low-flow-rate vortex flowmeter includes a fixed tube 1, a detector 2 fixedly connected to the top of the fixed tube 1, a movable cylinder 4 movably connected to the right side of the outer side of the fixed tube 1, a stud 5 threadedly connected to the inside of the movable cylinder 4, orifice plates 6 fixedly connected to both sides of the inside of the fixed tube 1, and connecting sleeves 3 fixedly connected to the left side of the outer side of the fixed tube 1 and the right side of the movable cylinder 4. The movable cylinder 4 includes a cylinder body 401 movably connected to the right side of the outer side of the fixed tube 1, which can move outside the tube body 101. A movable block 403 is fixedly connected to the left side of the inner side of the cylinder body 401, which can move outside the slide groove 103. The cylinder body 401 and the movable block 403 are connected in series. The internal part of the cylinder 401 has a screw hole 402, which is adapted to the thread on the outside of the cylinder 502. The inner side of the cylinder 401 is fixedly connected to a sealing sleeve 404, which is made of rubber and is used to ensure the sealing between the cylinder 401 and the pipe 101. During installation, by loosening the stud 5, the cylinder 401 can move to the outside of the pipe 101, thereby adjusting the distance between the two connecting sleeves 3. This allows the vortex flow meter to be placed between conveying pipes with different spacing. After adjustment, the flow meter can be fixed to the conveying pipe through the fixing hole 302, and then the stud 5 can be tightened to fix the cylinder 401. The installation is convenient.

[0024] In another embodiment of this utility model, the fixed tube 1 includes a tube body 101, and a vortex generator 102 is fixedly connected inside the tube body 101. A sliding groove 103 is provided on the right side of the outer side of the tube body 101. The sliding groove 103 is used for the movement of the moving block 403. A mounting base 105 is fixedly connected to the top of the tube body 101. A sealing gasket 104 is fixedly connected to the top of the mounting base 105. The sealing gasket 104 is made of rubber material to ensure better sealing between the mounting base 105 and the fixed plate 203. The mounting base 105 and the sealing gasket 104 are both provided with holes for the bolt 204 to pass through, so that the bolt 204 can be inserted into the fixed plate 203, the mounting base 105 and the sealing gasket 104 at the same time. After insertion, the fixed plate 203 can be fixed to the mounting base 105 by tightening the nut 205, thereby fixing the detector 2.

[0025] In another embodiment of this utility model, the detector 2 includes a fixed plate 203 placed on top of the fixed tube 1. A bolt 204 is movably connected inside the fixed plate 203, and a nut 205 is threadedly connected to the outside of the bolt 204. A detection body 202 is fixedly connected to the inside of the fixed plate 203. The lower end of the detection body 202 is located inside the tube 101 and is used to detect the vortex generated by the vortex street sound generator 102. A display 201 is fixedly connected to the top of the detection body 202 and is electrically connected to the detection body 202 to display the flow rate.

[0026] In another embodiment of the present invention, the connecting sleeve 3 includes a sleeve body 301 fixedly connected to the left side of the outer side of the fixed pipe 1 and the right side of the outer side of the movable cylinder 4. The sleeve body 301 is provided with a fixing hole 302 inside. The sleeve body 301 can be connected to the conveying pipe through the fixing hole 302, thereby fixing the vortex flow meter.

[0027] In another embodiment of this utility model, the stud 5 includes a column 502 threadedly connected inside the movable cylinder 4. The outer side of the column 502 is provided with a thread adapted to the screw hole 402. A screw block 501 is fixedly connected to the end of the column 502 away from the movable cylinder 4. By screwing the screw block 501, the column 502 can rotate. By rotating forward and backward, the column 502 can move back and forth inside the cylinder 401 and the movable block 403, so that the anti-slip strip 504 can press on the tube 101, which is convenient for fixing the cylinder 401. The anti-slip strip 504 can be removed from the tube 101, so that the cylinder 401 can move outside the tube 101. An anti-slip pad 503 is fixedly connected to the end of the column 502 away from the screw block 501. An anti-slip strip 504 is fixedly connected to the side of the anti-slip pad 503 away from the column 502. The anti-slip pad 503 and the anti-slip strip 504 are made of rubber material and have a certain anti-slip effect.

[0028] In another embodiment of this utility model, the orifice plate 6 includes a plate body 601 fixedly connected to both sides of the inner side of the fixed pipe 1. The plate body 601 is provided with a through hole 602 for liquid to pass through. Under the action of the orifice plate 6, the cross-sectional area of ​​liquid flow can be reduced, thereby increasing local resistance, reducing flow velocity and flow rate, and preventing excessive flow velocity and flow rate from causing the vortex generator to generate a large load, resulting in a low service life of the flow meter.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-velocity, low-flow-rate vortex flow meter, comprising a fixed tube (1), characterized in that: A detector (2) is fixedly connected to the top of the fixed tube (1). A movable cylinder (4) is movably connected to the right side of the outside of the fixed tube (1). A stud (5) is threaded inside the movable cylinder (4). A perforated plate (6) is fixedly connected to both sides inside the fixed tube (1). A connecting sleeve (3) is fixedly connected to the left side of the outside of the fixed tube (1) and the right side of the movable cylinder (4). The movable cylinder (4) includes a cylinder body (401) movably connected to the right side of the outside of the fixed tube (1). A movable block (403) is fixedly connected to the left side of the inside of the cylinder body (401). A screw hole (402) is provided inside the cylinder body (401) and the movable block (403). A sealing sleeve (404) is fixedly connected to the inside of the cylinder body (401).

2. The low-velocity, low-flow-rate vortex flow meter as described in claim 1, characterized in that: The fixed tube (1) includes a tube body (101), a vortex generator (102) is fixedly connected inside the tube body (101), a sliding groove (103) is provided on the right side of the outer side of the tube body (101), a mounting base (105) is fixedly connected to the top of the tube body (101), and a sealing gasket (104) is fixedly connected to the top of the mounting base (105).

3. The low-velocity, low-flow-rate vortex flow meter as described in claim 1, characterized in that: The detector (2) includes a fixed plate (203) placed on top of the fixed tube (1), a bolt (204) is movably connected inside the fixed plate (203), a nut (205) is threaded on the outside of the bolt (204), a detection body (202) is fixedly connected to the inside of the fixed plate (203), and a display (201) is fixedly connected to the top of the detection body (202).

4. The low-velocity, low-flow-rate vortex flowmeter as described in claim 1, characterized in that: The connecting sleeve (3) includes a sleeve body (301) fixedly connected to the left side of the fixed tube (1) and the right side of the movable tube (4), and the sleeve body (301) has a fixing hole (302) inside.

5. The low-velocity, low-flow-rate vortex flowmeter as described in claim 1, characterized in that: The stud (5) includes a column (502) threaded inside the movable cylinder (4), a screw block (501) fixedly connected to one end of the column (502) away from the movable cylinder (4), an anti-slip pad (503) fixedly connected to one end of the column (502) away from the screw block (501), and an anti-slip strip (504) fixedly connected to one side of the anti-slip pad (503) away from the column (502).

6. The low-velocity, low-flow-rate vortex flowmeter as described in claim 1, characterized in that: The perforated plate (6) includes a plate body (601) fixedly connected to both sides of the inner side of the fixed tube (1), and the plate body (601) has a through hole (602) inside.

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