Pipeline type electromagnetic flowmeter

Abstract

The invention relates to the technical field of flow detection, and discloses a pipeline type electromagnetic flowmeter which comprises a mounting pipe body and an electromagnetic flowmeter main body mounted on the mounting pipe body, and further comprises a cylindrical cavity formed in the mounting pipe body, a rotating sleeve is rotationally connected in the cylindrical cavity, the rotating sleeve and the mounting pipe body are coaxially arranged, and the electromagnetic flowmeter main body is arranged in the cylindrical cavity. A rotating assembly for driving the rotating sleeve to rotate is arranged on the mounting pipe body; a partition plate is installed in the rotating sleeve, the partition plate divides the interior of the rotating sleeve into two filtering spaces with semicircular sections, a circular baffle is fixed to the end, close to the electromagnetic flowmeter body, of the rotating sleeve, and a semicircular baffle is fixed to the end, away from the electromagnetic flowmeter body, of the interior of the cylindrical cavity. Through the design of the two filter barrels, when one of the filter barrels is cleaned, shutdown is not needed, water flow filtration and water flow conveying are not affected, and backwashing can be carried out.

Description

Technical Field

[0001] This invention belongs to the field of flow detection technology, and particularly relates to a pipeline electromagnetic flow meter. Background Technology

[0002] The pipeline electromagnetic flow meter is a type of electromagnetic flow meter that is directly installed in the pipeline system. Its core principle utilizes the induced electromotive force (EMF) generated when a conductive liquid flows through a magnetic field (the magnitude of which is proportional to the flow velocity). The flow rate is calculated by measuring the EMF, and there are no moving mechanical parts in the measurement process.

[0003] Impurities in the water flow within the pipeline, such as impurities dislodged from the pipe's inner wall by the water flow and pre-existing particulate impurities in the water, interfere with the uniform distribution of the electromagnetic field. This causes the measured induced electromotive force (EMF) value to deviate from the actual flow rate, resulting in systematic errors. Impurities adhering to the electrode surface form an insulating layer, hindering signal transmission and preventing the flow meter from detecting a valid EMF signal. Furthermore, particle deposition and scaling reduce the inner diameter of the measuring tube (especially with uneven scaling), leading to a calculated flow velocity value higher than the actual value. Therefore, existing pipeline electromagnetic flow meters lack filtration capabilities, making them susceptible to interference from particulate impurities in the water, resulting in inaccurate measurement results. Summary of the Invention

[0004] The purpose of this invention is to provide a pipeline electromagnetic flow meter that solves the problem that existing pipeline electromagnetic flow meters are easily affected by particulate impurities in water, leading to inaccurate measurement results.

[0005] This invention is implemented as follows: a pipeline electromagnetic flowmeter includes an installation pipe and an electromagnetic flowmeter body mounted on the installation pipe. It further includes: a cylindrical cavity within the installation pipe, a rotating sleeve rotatably connected within the cylindrical cavity, the rotating sleeve being coaxially arranged with the installation pipe; a rotating assembly for driving the rotating sleeve to rotate on the installation pipe; a partition installed within the rotating sleeve, dividing the rotating sleeve into two semi-circular filtration spaces; a circular baffle fixed to the end of the rotating sleeve near the electromagnetic flowmeter body, and a semi-circular baffle fixed to the end of the cylindrical cavity away from the electromagnetic flowmeter body; filter barrels installed in both filtration spaces, the open end of the filter barrels communicating with the internal space of the right side of the installation pipe via the circular baffle; notches provided on the side wall of the rotating sleeve at both filtration spaces; a collection chamber below the cylindrical cavity, a drain pipe installed below the collection chamber, and a check valve installed on the drain pipe.

[0006] In a further technical solution, the rotating assembly includes an external gear ring mounted on the side wall of the rotating sleeve, a motor fixed on the side wall of the mounting tube, a gear mounted on the rotating end of the motor, and the gear meshing with the external gear ring.

[0007] A further technical solution is provided in which an annular installation space is provided on the inner wall of the installation tube, the outer toothed ring is located in the installation space, and the installation space is provided with a clearance groove for avoiding the engagement of the gear and the outer toothed ring.

[0008] In a further technical solution, the two filter barrels are respectively installed in two filter spaces by two mounting components. The mounting components include a fixed seat fixed on the inner wall of the rotating sleeve and a rotating sleeve rotatably connected to the circular baffle. The rotating sleeve passes through the circular baffle, and the two ends of the filter barrel are fixed to the fixed seat and the rotating sleeve by bolts.

[0009] In a further technical solution, the mounting pipe body is fixed with an arc-shaped plate by bolts.

[0010] A further technical solution includes a rotating assembly on the mounting tube body, which drives the rotating sleeve to rotate. The rotating assembly includes an internal gear ring rotatably connected to the inner wall of the mounting tube body, a second gear fixed on the internal gear ring, the second gear meshing with the internal gear ring, meshing teeth embedded and fixed on the side wall of the internal gear ring, a second motor fixed on the side wall of the mounting tube body, and a third gear fixed at the rotating end of the second motor, the third gear meshing with the meshing teeth.

[0011] A further technical solution is provided in which an installation space two is provided on the inner wall of the installation tube, the internal gear ring is rotatably connected in the installation space two, the rotating sleeve is provided with a relief groove two for avoiding the engagement of gear two with the internal gear ring, and the installation space two is provided with a relief groove three for avoiding the engagement of gear three with the meshing teeth.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] This invention provides a pipeline electromagnetic flowmeter with a two-filter design. Cleaning one filter can be performed without stopping the machine, thus not affecting water filtration or delivery. Backwashing is also possible. When the water flow rate is high and the filtration efficiency of one filter is low, the rotating assembly drives the rotating sleeve to rotate 90°, causing both filter cans to rotate to a horizontal position, meaning the line connecting the axes of the two filter cans is horizontal. Water entering the installation pipe can then flow into both filtration spaces, allowing both filter cans to operate simultaneously, thereby improving the water filtration efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a pipeline electromagnetic flowmeter provided by the present invention;

[0015] Figure 2 Provided by the present invention Figure 1 Schematic diagram of the internal structure of the installation pipe body;

[0016] Figure 3 Provided by the present invention Figure 2 A schematic diagram of the structure with the right-side tilt angle;

[0017] Figure 4 Provided by the present invention Figure 2 Schematic diagram of the rotating sleeve;

[0018] Figure 5 Provided by the present invention Figure 4 A schematic diagram of the internal structure of the rotating sleeve.

[0019] In the attached diagram: 101, mounting pipe; 102, electromagnetic flowmeter body; 103, cylindrical cavity; 104, collection chamber; 105, rotating sleeve; 106, notch; 107, partition plate; 108, circular baffle; 109, filter barrel; 110, semi-circular baffle; 111, drain pipe; 112, check valve;

[0020] 2. Rotating assembly; 201. External gear ring; 202. Gear 1; 203. Motor 1; 204. Installation space 1;

[0021] 3. Rotating assembly; 301. Internal gear ring; 302. Gear two; 303. Meshing teeth; 304. Gear three; 305. Motor two; 306. Installation space two;

[0022] 4. Installation components; 401. Fixing base; 402. Rotating sleeve; 403. Curved plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention 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 and not intended to limit the invention.

[0024] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0025] like Figures 1-5As shown, an embodiment of the present invention provides a pipeline electromagnetic flowmeter, including an installation pipe body 101 and an electromagnetic flowmeter body 102 installed on the installation pipe body 101. It further includes: a cylindrical cavity 103 disposed within the installation pipe body 101, a rotating sleeve 105 rotatably connected within the cylindrical cavity 103, the rotating sleeve 105 being coaxially disposed with the installation pipe body 101, and a rotating assembly 2 disposed on the installation pipe body 101 for driving the rotating sleeve 105 to rotate; a partition 107 installed within the rotating sleeve 105, the partition 107 dividing the rotating sleeve 105 into two semi-circular cross-sectional filter spaces. A circular baffle 108 is fixed to one end of the sleeve 105 near the electromagnetic flowmeter body 102, and a semi-circular baffle 110 is fixed to one end of the cylindrical cavity 103 away from the electromagnetic flowmeter body 102. Filter barrels 109 are installed in both of the two filter spaces. The open end of the filter barrel 109 and the circular baffle 108 are connected to the internal space of the mounting pipe 101 on the right side. Notches 106 are provided on the side wall of the rotating sleeve 105 at both filter spaces. A collection chamber 104 is provided below the cylindrical cavity 103. A drain pipe 111 is installed below the collection chamber 104. A check valve 112 is installed on the drain pipe 111.

[0026] In this embodiment of the invention, the electromagnetic flowmeter body 102 includes a converter, electrodes, and an excitation coil, etc. The electromagnetic flowmeter body 102 is existing technology and will not be described in detail here. One end of the mounting pipe 101 near the electromagnetic flowmeter body 102 is connected to the outlet pipe, and the other end away from the electromagnetic flowmeter body 102 is connected to the inlet pipe. Water flows into the mounting pipe 101 from the end away from the electromagnetic flowmeter body 102, and enters one of the filtration spaces. A semi-circular baffle 110 blocks the left end of the other filtration space (e.g., ...). Figure 2 As shown), the water flows through the filter barrel 109 in the filtration space and enters the filter barrel 109. The filtered water enters the right end of the circular baffle 108, and the electromagnetic flowmeter body 102 measures the water flow.

[0027] Impurities are filtered onto the side wall of filter barrel 109. Pressure sensors can be installed at both ends of the mounting pipe 101. When the pressure difference between the two ends of the mounting pipe 101 exceeds the threshold range, it indicates that filter barrel 109 is severely clogged and needs cleaning. Excessive accumulation of impurities in the filtration space will result in a high impurity concentration, putting filter barrel 109 in a poor working condition. The impurities in the filtration space need to be discharged. Rotating component 2 drives rotating sleeve 105 to rotate 180°, thereby switching the two filter barrels 109 between their operating positions. The clogged filter barrel 109 rotates to the bottom, and its filtration space is connected to the collection chamber 104 through notch 106. The left side of the filtration space to be cleaned is blocked by semi-circular baffle 110. Opening check valve 112 allows filtered water from the right side of the circular baffle 108 to enter the clogged filter. Inside the filter 109, the clogged filter 109 is backwashed. The washed-off impurities enter the collection chamber 104 through the filtration space and the opening 106, and then are discharged from the drain pipe 111. The check valve 112 is then closed. With the design of two filter 109s, the machine does not need to be stopped when cleaning one of the filter 109s, so the filtration and delivery of water flow are not affected. The water flow is large. When the filtration efficiency of one filter 109 is low, the rotating component 2 drives the rotating sleeve 105 to rotate 90°. The rotating sleeve 105 drives the two filter 109s to rotate to a horizontal state, that is, the line connecting the axes of the two filter 109s is in a horizontal state. The water flow entering the installation pipe 101 can enter the two filtration spaces. The two filter 109s work at the same time, thereby improving the filtration efficiency of the water flow.

[0028] like Figure 1 , Figure 2 and Figure 4 As shown, in a preferred embodiment of the present invention, the rotating assembly 2 includes an external gear ring 201 mounted on the side wall of the rotating sleeve 105, a motor 203 fixed on the side wall of the mounting tube 101, a gear 202 mounted on the rotating end of the motor 203, the gear 202 meshing with the external gear ring 201, an annular mounting space 204 provided on the inner wall of the mounting tube 101, the external gear ring 201 located in the mounting space 204, and a clearance groove provided on the mounting space 204 for avoiding the meshing of the gear 202 with the external gear ring 201.

[0029] In this embodiment of the invention, motor 203 drives gear 202 to rotate, gear 202 drives external gear ring 201 to rotate, external gear ring 201 drives rotating sleeve 105 to rotate, when rotating sleeve 105 rotates 180°, the two filter barrels 109 switch positions, when rotating sleeve 105 rotates 90°, the two filter barrels 109 work simultaneously.

[0030] like Figure 1 , Figure 4 and Figure 5 As shown, in a preferred embodiment of the present invention, the two filter barrels 109 are respectively installed in two filter spaces by two mounting components 4. The mounting components 4 include a fixed seat 401 fixed on the inner wall of the rotating sleeve 105, and a rotating sleeve 402 rotatably connected to the circular baffle 108. The rotating sleeve 402 passes through the circular baffle 108. The two ends of the filter barrel 109 are fixed to the fixed seat 401 and the rotating sleeve 402 by bolts. The mounting tube 101 is fixed with an arc plate 403 by bolts.

[0031] In this embodiment of the invention, when replacing or installing the filter canister 109, the arc plate 403 is removed from the mounting tube 101, at which point the top of the mounting tube 101 is opened. The filter canister 109 is placed in the filtration space from the top of the mounting tube 101 and the notch 106. The open end of the filter canister 109 is fixed to the rotating sleeve 402 with bolts, and the other end of the filter canister 109 is fixed to the fixing seat 401 with bolts. Then, the arc plate 403 is fixed to the mounting tube 101 with bolts.

[0032] like Figures 1-5 As shown, in a preferred embodiment of the present invention, a rotating assembly 3 is provided on the mounting tube 101. The rotating assembly 3 is used to drive the rotating sleeve 402 to rotate. The rotating assembly 3 includes an internal gear ring 301 rotatably connected to the inner wall of the mounting tube 101. A gear 302 is fixed on the internal gear ring 301 and meshes with the internal gear ring 301. Engaging teeth 303 are embedded and fixed on the side wall of the internal gear ring 301. A motor is fixed on the side wall of the mounting tube 101. 305, the rotating end of the second motor 305 is fixed with a third gear 304, the third gear 304 meshes with the meshing teeth 303, the inner wall of the mounting tube 101 is provided with a second mounting space 306, the inner gear ring 301 is rotatably connected in the second mounting space 306, the rotating sleeve 105 is provided with a second clearance groove for avoiding the meshing of the second gear 302 and the inner gear ring 301, and the second mounting space 306 is provided with a third clearance groove for avoiding the meshing of the third gear 304 and the meshing teeth 303.

[0033] In this embodiment of the invention, motor 2 305 drives gear 3 304 to rotate. Gear 3 304 drives internal gear ring 301 to rotate through meshing teeth 303. Internal gear ring 301 drives two gears 2 302 to rotate. The two gears 2 302 drive two filter barrels 109 to rotate. When the filter barrel 109 is in the filtration state, the rotation of the filter barrel 109 can generate centrifugal force, reducing the adhesion of impurities to the filter barrel 109, thereby improving the filtration effect of the filter barrel 109. When the filter barrel 109 is in the cleaning state, the rotating filter barrel 109 can generate centrifugal force in the water inside the filter barrel 109, improving the backwashing effect of the water flow inside the filter barrel 109, and can also quickly throw off impurities from the filter barrel 109, improving the cleaning effect of the filter barrel 109.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pipeline electromagnetic flowmeter, comprising an installation pipe body and an electromagnetic flowmeter body mounted on the installation pipe body, characterized in that, Also includes: The mounting tube is provided with a cylindrical cavity, and a rotating sleeve is rotatably connected to the cylindrical cavity. The rotating sleeve is coaxially arranged with the mounting tube. The mounting tube is provided with a rotating component for driving the rotating sleeve to rotate. A partition is installed inside the rotating sleeve, which divides the rotating sleeve into two filter spaces with a semi-circular cross-section. A circular baffle is fixed at the end of the rotating sleeve near the electromagnetic flowmeter body, and a semi-circular baffle is fixed at the end of the cylindrical cavity away from the electromagnetic flowmeter body. Each of the two filtration spaces is equipped with a filter barrel. The open end of the filter barrel and the circular baffle are connected to the internal space of the mounting tube on the right side. The rotating sleeve has notches on its side wall at both filtration spaces. A collection chamber is provided below the cylindrical cavity. A drain pipe is installed below the collection chamber. A check valve is installed on the drain pipe.

2. The pipeline electromagnetic flowmeter according to claim 1, characterized in that, The rotating assembly includes an external gear ring mounted on the side wall of the rotating sleeve, a motor fixed on the side wall of the mounting tube, and a gear mounted on the rotating end of the motor, which meshes with the external gear ring.

3. The pipeline electromagnetic flowmeter according to claim 2, characterized in that, An annular mounting space is provided on the inner wall of the mounting tube. The external gear ring is located within the mounting space. An avoidance groove is provided on the mounting space to avoid the engagement of the gear and the external gear ring.

4. The pipeline electromagnetic flowmeter according to claim 1, characterized in that, The two filter barrels are respectively installed in the two filter spaces by two mounting components. The mounting components include a fixed base fixed on the inner wall of the rotating sleeve and a rotating sleeve rotatably connected to the circular baffle. The rotating sleeve passes through the circular baffle. The two ends of the filter barrel are fixed to the fixed base and the rotating sleeve by bolts.

5. The pipeline electromagnetic flowmeter according to claim 4, characterized in that, The mounting tube is fixed with an arc-shaped plate by bolts.

6. The pipeline electromagnetic flowmeter according to claim 4, characterized in that, The mounting tube is provided with a rotating assembly, which is used to drive the rotating sleeve to rotate. The rotating assembly includes an internal gear ring rotatably connected to the inner wall of the mounting tube. A second gear is fixed on the internal gear ring and meshes with the internal gear ring. A meshing tooth is embedded and fixed on the side wall of the internal gear ring. A second motor is fixed on the side wall of the mounting tube. A third gear is fixed on the rotating end of the second motor and meshes with the meshing tooth.

7. The pipeline electromagnetic flowmeter according to claim 6, characterized in that, The inner wall of the mounting tube is provided with a second mounting space. The internal gear ring is rotatably connected in the second mounting space. The rotating sleeve is provided with a second clearance groove for avoiding the engagement of the second gear with the internal gear ring. The second mounting space is provided with a third clearance groove for avoiding the engagement of the third gear with the meshing teeth.

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