A vortex flowmeter

Abstract

The utility model belongs to the technical field of vortex flowmeter, and in particular, relates to a vortex flowmeter. The technology includes a measuring tube, the measuring tube includes a tube body, a measuring instrument is installed on the tube body, the measuring instrument includes an intermediate connecting column, a vortex generator is installed on the lower end of the intermediate connecting column, a display screen is installed on the intermediate connecting column, the intermediate connecting column is detachably connected to the tube body, a first pipe is inserted into the right end of the tube body, and a first sealing ring is installed on the outer wall of the left end of the first pipe; a second pipe is inserted into the left end of the tube body, and a second sealing ring is installed on the outer wall of the right end of the second pipe. When the inner wall of the measuring tube needs to be cleaned, the measuring instrument is removed, the tube body moves left and right along the outer walls of the first pipe and the second pipe, and the second sealing ring and the first sealing ring scrape off the sediment and impurities on the inner wall of the tube body, and the measuring tube connected to the pipeline can be cleaned without removing it, which is convenient and quick.

Description

Technical Field

[0001] The utility model belongs to the technical field of vortex flowmeters, in particular to a vortex flowmeter. Background Art

[0002] The vortex flowmeter is a flow measurement instrument that works on the principle of Karman vortex. It determines the flow velocity and flow rate of the fluid by measuring the vortex frequency generated by the vortex generator during the flow of the fluid. However, when measuring the liquid flow, if there are tiny impurities in the liquid, the impurities in the measuring pipe will adhere to the vortex flowmeter after a while, affecting the measurement accuracy. At this time, it is necessary to clean the impurities on the inner wall of the measuring tube, but it is too troublesome to disassemble the measuring tube for cleaning and then install it. Utility Model Content

[0003] The utility model aims to provide a vortex flowmeter for conveniently cleaning the inner wall of a measuring pipeline.

[0004] The vortex flowmeter comprises a measuring tube, the measuring tube comprises a transversely arranged tube body, a measuring instrument is installed on the tube body, the measuring instrument comprises a vertically arranged middle connecting column, the lower end of the middle connecting column penetrates into the tube body and is located in the tube body, the upper end of the middle connecting column is located above the tube body, a vortex generator is vertically installed at the lower end of the middle connecting column, a display screen is installed on the middle connecting column above the tube body, the middle connecting column is detachably connected to the tube body, a first pipe that can slide left and right in the tube body is independently and transversely inserted into the right end of the tube body, and an annular first sealing ring is installed on the outer side wall of the left end of the first pipe;

[0005] A second pipe which can slide left and right in the pipe body is independently and horizontally inserted into the pipe opening at the left end of the pipe body, and an annular second sealing ring is installed on the outer side wall of the right end of the second pipe.

[0006] When in use, the measuring tube is installed at the middle connection of the left and right pipes, the right end of the first pipe is connected to the right pipe, and the left end of the second pipe is connected to the left pipe. When the inner wall of the measuring tube needs to be cleaned, the measuring instrument is removed, and the tube body moves left and right along the outer walls of the first pipe and the second pipe. During the movement, the second sealing ring and the first sealing ring scrape off the sediment and impurities on the inner wall of the tube body. The measuring tube connected to the pipeline can be cleaned without being removed, which reduces the cumbersome cleaning steps of the measuring tube and is convenient and quick.

[0007] Furthermore, a first through hole communicating with the inside and outside is opened on the tube body corresponding to the middle connecting column, an instrument mounting tube through which the middle connecting column and the vortex generating body can pass independently is vertically fixed to the upper end of the first through hole, a movable nut is installed on the middle connecting column, an external thread matching the thread of the movable nut is provided on the upper end of the instrument mounting tube, and a third sealing ring is installed on the middle connecting column at the bottom of the movable nut.

[0008] The cooperation between the movable nut and the third sealing ring can not only ensure the stable installation of the measuring instrument, but also prevent liquid leakage at the first through hole.

[0009] Furthermore, a cylinder is vertically fixed at the bottom of the vortex generating body, an internal thread is processed inside the cylinder, and a plug is provided on the tube body corresponding to the cylinder.

[0010] Connect the cylinder to the plug on the pipe body to increase the stability of the vortex generator.

[0011] Furthermore, a second through hole communicating with the inside and outside is provided on the pipe body corresponding to the plug, and a plug mounting platform is fixed in the second through hole.

[0012] Install the plug on the plug mounting platform at the second through hole for easy installation.

[0013] Furthermore, the right end of the first pipeline is connected to a first flange.

[0014] The first flange is connected to the pipeline on the right side, which is convenient and can also limit the position of the measuring tube when it slides to the right.

[0015] Furthermore, the left end of the second pipeline is connected with a second flange.

[0016] The second flange is connected to the pipe on the left side, which is convenient and can also limit the position of the measuring tube when it slides to the left.

[0017] Furthermore, the left end of the pipe body is connected to a third flange, and the left end of the third flange is connected to a third pipe having the same inner diameter as the pipe body.

[0018] By connecting the third pipeline via the third flange, the sliding distance of the measuring tube to the right can be increased.

[0019] Furthermore, a handle is installed on the tube body.

[0020] The handle makes it easy to slide the tube left and right.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] When in use, the measuring tube is installed at the middle connection of the left and right pipes, the right end of the first pipe is connected to the right pipe, and the left end of the second pipe is connected to the left pipe. When the inner wall of the measuring tube needs to be cleaned, the measuring instrument is removed, and the tube body moves left and right along the outer walls of the first pipe and the second pipe. During the movement, the second sealing ring and the first sealing ring scrape off the sediment and impurities on the inner wall of the tube body. The measuring tube connected to the pipeline can be cleaned without being removed, which reduces the cumbersome cleaning steps of the measuring tube and is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a vortex flowmeter;

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of a vortex flowmeter;

[0025] Figure 3 yes Figure 1 Right view of;

[0026] Figure 4 yes Figure 3 Schematic diagram of the structure of the measuring tube;

[0027] Figure 5 yes Figure 4 Cross-sectional view along AA direction;

[0028] Figure 6 yes Figure 1 Schematic diagram of the structure of the measuring instrument;

[0029] Figure 7 yes Figure 6 Stereoscopic image of

[0030] Figure 8 yes Figure 1 Schematic diagram of the structure of the middle plug;

[0031] Fig. 9 yes Figure 8 Left view of

[0032] Fig.10 yes Figure 1 The structural schematic diagram of the first pipeline after enlargement;

[0033] Fig.11 yes Figure 1 The structural diagram of the second pipeline after enlargement;

[0034] Fig.12 yes Figure 1 Stereoscopic diagram.

[0035] The names of the components in the figure are: 1. First flange; 2. First pipeline; 3. Measuring tube; 3.1. Pipe body; 3.2. Handle; 3.3. Instrument mounting tube; 3.4. Plug mounting platform; 4. Measuring instrument; 4.1. Middle connecting column; 4.2. Movable nut; 4.3. Vortex generator; 5. Third flange; 6. Third pipeline; 7. Second pipeline; 8. Second flange; 9. Plug; 10. Second sealing ring; 11. First sealing ring; 12. Third sealing ring. DETAILED DESCRIPTION

[0036] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0037] Example

[0038] This embodiment uses the following materials:

[0039] Prepare a section of 6061 aluminum alloy tube as the tube body 3.1, such as Figure 1 As shown, a first through hole communicating with the inside and outside is drilled in the center of the top of the side wall of the tube body 3.1, such as Figure 2 As shown, a second through hole communicating with the inside and outside of the measuring tube 3 is drilled in the bottom of the measuring tube 3 opposite to the first through hole.

[0040] like Figure 3 and Figure 4 As shown, two handles are prepared as handles 3.2, and the material of handles 3.2 is weldable metal.

[0041] Prepare a section of 6061 aluminum alloy pipe, process external threads on the outer wall to become the instrument installation pipe 3.3.

[0042] Prepare a 6061 aluminum alloy block, the size of which is consistent with the aperture of the second through hole, drill a third through hole in the center, and the top surface is a concave arc surface milled out to become a plug mounting platform 3.4.

[0043] like Figure 4 and Figure 5 As shown, the instrument mounting tube 3.3 is coaxially welded at the first through hole of the tube body 3.1, the plug mounting platform 3.4 is coaxially welded at the second through hole, and two symmetrical handles 3.2 are welded on the outer wall of the tube body 3.1, and the measuring tube 3 is processed.

[0044] Prepare 6061 aluminum alloy and movable nuts, and weld them after cooling through casting to form measuring instrument 4. The main appearance structure of measuring instrument 4 is roughly the same as that of a conventional vortex flowmeter, except that the middle connecting column is different, such as Figure 6 and Figure 7 As shown, a hollow disc is first processed, and a third through hole is provided on the side wall as a display screen hole; an intermediate connecting column 4.1 is processed, and the intermediate connecting column 4.1 is a stepped cylinder with a flange at the step. A vortex generator 4.3 is connected to the bottom of the intermediate connecting column 4.1, and the end of the vortex generator 4.3 is a cylinder, and the inner wall of the cylinder is processed with an internal thread. After the movable nut 4.2 is inserted into the intermediate connecting column 4.1, the top of the intermediate connecting column 4.1 is welded to the disc, and the processing of the measuring instrument 4 is completed.

[0045] Prepare low-density polyethylene for injection molding to form a plug 9, such as Figure 8 and9 As shown, the plug 9 is a stepped cylinder. Figure 8 The right end shown is machined with external threads that match the internal threads of the cylinder. Figure 8 The left end shown is milled out as Fig. 9 A rectangular groove in the shape of a.

[0046] Prepare aluminum alloy tubes, such as Fig.10 As shown, an annular groove is milled out on the outer side wall of the left end as a mounting groove for the first sealing ring 11 to form the first pipeline 2.

[0047] Prepare aluminum alloy tubes such as Fig.11 As shown, an annular groove is milled out on the outer side wall of the right end as a mounting groove for the second sealing ring 10 to form the second pipeline 7.

[0048] An aluminum alloy pipe is prepared as the third pipeline 6.

[0049] Three flanges are prepared, namely a first flange 1 , two third flanges 5 and a second flange 8 .

[0050] The sealing rings prepared to adapt to the above-mentioned different sizes are respectively the second sealing ring 10, the first sealing ring 11 and the third sealing ring 12.

[0051] The above materials are assembled as follows:

[0052] Step 1: If Figure 2 As shown, the first sealing ring 11 is inserted into the first pipe 2, the second sealing ring 10 is installed on the middle connecting column 4.1, and the third sealing ring 12 is installed on the second pipe 7.

[0053] Step 2: Weld the third flange 5 at the connection between the left end of the pipe body 3.1 and the right end of the third pipeline 6, and connect the measuring pipe 3 and the third pipeline 6 through the third flange 5.

[0054] Step 3: Install the first flange 1 on the right end of the first pipe 2, insert the left end of the first pipe 2 into the pipe body 3.1, install the second flange 8 on the left end of the second pipe 7, and insert the right end into the third pipe 6.

[0055] Step 4: Install the measuring instrument 4, insert the vortex generator 4.3 into the measuring tube 3, install the plug 9 from the third through hole of the plug mounting platform 3.4, the cylinder and the plug 9 are threaded together, and the plug 9 is rotated under the tube body 3.1 through the rectangular groove of the plug 9, so that the plug 9 and the cylinder thread at the lower end of the vortex generator 4.3 are threaded and connected and tightened. The assembled structure is as follows Fig.12 shown.

[0056] Instructions for use are as follows:

[0057] The vortex flowmeter is connected to the middle connection of the two sections of the delivery pipeline through a flange, and the measuring tube 3 is slid to make the measuring tube 3 away from the first flange 1. After the vortex flowmeter has been used for a period of time, impurities in the liquid will adhere to and accumulate inside the measuring tube 3. At this time, the valve of the liquid delivery pipe is closed, the plug 9 is unscrewed, the movable nut 4.2 is loosened, the measuring instrument 4 is pulled out, the handle 3.2 of the measuring tube 3 is grasped, and the measuring tube 3 is slid left and right, so that the first sealing ring 11 on the first pipeline 2 pushes away the impurities on the inner wall of the pipe body 3.1, and then the measuring instrument 4 and the plug 9 are reinserted and assembled.

[0058] The vortex flowmeter can clean the impurities on the inner wall of the measuring tube 3 without disassembling the measuring tube 3, thus reducing the cumbersome cleaning steps. If the measuring instrument 4 is damaged, it is also convenient to replace the measuring instrument 4.

Claims

1. A vortex flowmeter, comprising a measuring tube (3), the measuring tube (3) comprising a transversely arranged tube body (3.1), a measuring instrument (4) being mounted on the tube body (3.1), the measuring instrument (4) comprising a vertically arranged intermediate connecting column (4.1), the lower end of the intermediate connecting column (4.1) being inserted into the tube body (3.1) and being located inside the tube body (3.1), the upper end of the intermediate connecting column (4.1) being located above the tube body (3.1), a vortex generator (4.3) being vertically mounted at the lower end of the intermediate connecting column (4.1), and a display screen being mounted on the intermediate connecting column (4.1) above the tube body (3.1), characterized in that: The intermediate connecting column (4.1) is detachably connected to the pipe body (3.1); a first pipe (2) capable of sliding left and right in the pipe body (3.1) is independently and transversely inserted into the pipe opening at the right end of the pipe body (3.1); and an annular first sealing ring (11) is installed on the outer side wall of the left end of the first pipe (2); A second pipe (7) capable of sliding left and right in the pipe body (3.1) is independently and laterally inserted into the pipe opening at the left end of the pipe body (3.1), and an annular second sealing ring (10) is installed on the outer side wall of the right end of the second pipe (7).

2. The vortex flowmeter according to claim 1, characterized in that: A first through hole communicating with the inside and outside is provided on the tube body (3.1) corresponding to the middle connecting column (4.1); an instrument installation tube (3.3) through which the middle connecting column (4.1) and the vortex generating body (4.3) can pass independently is vertically fixed to the upper end of the first through hole; a movable nut (4.2) is installed on the middle connecting column (4.1); an external thread matching the thread of the movable nut (4.2) is provided on the upper end of the instrument installation tube (3.3); and a third sealing ring (12) is installed on the middle connecting column (4.1) at the bottom of the movable nut (4.2).

3. The vortex flowmeter according to claim 2, characterized in that: A cylinder is vertically fixed at the bottom of the vortex generating body (4.3), an internal thread is processed inside the cylinder, and a plug (9) is provided on the tube body (3.1) corresponding to the cylinder.

4. The vortex flowmeter according to claim 3, characterized in that: The pipe body (3.1) is provided with a second through hole communicating with the inside and outside corresponding to the plug (9), and a plug mounting platform (3.4) is fixed in the second through hole.

5. The vortex flowmeter according to claim 4, characterized in that: The right end of the first pipeline (2) is connected to a first flange (1).

6. The vortex flowmeter according to claim 5, characterized in that: The left end of the second pipeline (7) is connected to a second flange (8).

7. The vortex flowmeter according to claim 6, characterized in that: The left end of the pipe body (3.1) is connected to a third flange (5), and the left end of the third flange (5) is connected to a third pipe (6) having the same inner diameter as the pipe body (3.1).

8. The vortex flowmeter according to claim 7, characterized in that: A handle (3.2) is installed on the tube body (3.1).

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