Wafer flow meter

Abstract

The utility model discloses a wafer flowmeter which comprises a display instrument, a first splice plate and a second splice plate are arranged below the display instrument, the first splice plate and the second splice plate are detachably connected and form a measuring guide pipe, a lining and a measuring assembly are arranged on the inner side of the measuring guide pipe, and the inner side of the measuring guide pipe is connected with the display instrument. The measuring assembly comprises a frame body, an electrode and an electromagnetic device, and the electrode and the electromagnetic device are both arranged on the frame body and are both connected with the display instrument; the first splicing plate and the second splicing plate which are detachably connected are arranged and can be rapidly detached according to requirements, the detachable electrode and the detachable electromagnetic device are additionally arranged, convenience is provided for detaching the electrode and the electromagnetic device, and the defects that a measuring guide pipe of an existing electromagnetic flowmeter is inconvenient to detach, and the measuring guide pipe is inconvenient to detach are overcome. And an electrode and an electromagnetic device are inconvenient to take out due to a structure with a large middle part and two small ends, so that the cost of manufacturers is reduced.

Description

Technical Field

[0001] The utility model relates to the field of electromagnetic flowmeters, in particular to a clamped flowmeter. Background Art

[0002] To measure fluid flow, a flow meter is typically installed in the fluid delivery pipeline for real-time monitoring. Currently, there are many types of flow meters, such as the electromagnetic flow meter, which uses the principle of electromagnetic induction to measure the flow of conductive fluids based on the electromotive force induced when the conductive fluid passes through an external magnetic field.

[0003] Electromagnetic flowmeters available on the market generally consist of a magnetic circuit system, a measuring conduit, electrodes, and a lining. The magnetic circuit system generates a magnetic field within the measuring conduit. When a conductive fluid flows through the conduit, it generates an electric potential difference. Because the electrodes are located on both sides of the fluid and connected to the conductive fluid, the electromotive force of the conductive fluid can be measured. Since the electromotive force is proportional to the flow rate, this provides support for calculating the fluid's flow rate. Because the electrodes are located on both sides of the conductive fluid, forming a clamping structure, electromagnetic flowmeters are also called wafer flowmeters. In addition, the specific structure of the electromagnetic flowmeter can be retrieved in patent documents. For example, a Chinese patent with publication number CN116222672A discloses an electromagnetic flowmeter, which includes a shell, an inner shell, and an electric control module arranged in the inner shell. The shell includes an outer shell, and the inner shell includes a fixed shell and a fixed cover connected to each other. The electric control module is fixed between the fixed shell and the fixed cover. The electric control module includes a control board, a power board, and a terminal board. The fixed shell is provided with a first fixed groove and a second fixed groove, and the control board and the power board are respectively inserted into the first fixed groove and the second fixed groove. The terminal board is fixed to the rear side of the fixed shell. The outer wall of the fixed shell is provided with a positioning groove. The position of the positioning protrusion corresponds to the position of the positioning groove, and the positioning protrusion can be inserted into the positioning groove. The adoption of the present invention can facilitate wiring, and the wiring is regular, which is convenient for installation and disassembly.

[0004] Whether it is the electromagnetic flowmeter provided by the above patent or other electromagnetic flowmeters, their measuring conduits are all configured as an integrated structure. In addition, the measuring conduit is generally configured as a structure that is larger in the middle and smaller at both ends, and the magnetic circuit system and electrodes are both arranged inside the measuring conduit. At the same time, in order not to affect the circulation of the conductive fluid, the magnetic circuit system and electrodes are not protruding from the lining. Therefore, when the magnetic circuit system and electrodes fail, because the magnetic circuit system and electrodes are located in the middle of the measuring conduit, it is not convenient for maintenance personnel to remove them from the measuring conduit, that is, it is not convenient for maintenance personnel to repair the electromagnetic flowmeter. If it really needs to be repaired, the measuring conduit can only be destroyed. This operation is time-consuming. In order to resume production as soon as possible, the manufacturer generally chooses to replace the electromagnetic flowmeter, which increases production costs. Utility Model Content

[0005] The purpose of the utility model is to provide a clamped flow meter, aiming to improve the problem that the electromagnetic flow meter is inconvenient to disassemble, repair or replace.

[0006] The utility model is implemented as follows: a clamped flow meter includes a display instrument, a first splicing plate and a second splicing plate are arranged below the display instrument, the first splicing plate and the second splicing plate are detachably connected to form a measuring conduit, a lining and a measuring assembly are arranged on the inner side of the measuring conduit, and the measuring assembly includes a frame, electrodes and an electromagnetic device, the electrodes and the electromagnetic device are both arranged on the frame and are both connected to the display instrument.

[0007] Preferably, the first splicing plate and the second splicing plate are both configured as a structure with a middle size larger than the size at both ends, flanges are provided at both ends of the first splicing plate, and the second splicing plate is arranged in the space formed by the first splicing plate and the flanges.

[0008] Preferably, a first slot and a second slot are provided on the side walls of the first splicing plate and the second splicing plate that are close to each other, and a filling plate group is provided in the space formed by splicing the first slot and the second slot, the filling plate group includes a first filling plate and a second filling plate, and the two edges of the first filling plate and the second filling plate are respectively inserted into the first splicing plate and the second splicing plate.

[0009] Preferably, arc grooves are provided on the top of the first splicing plate and the second splicing plate, and a seal is provided in the space formed by the two arc grooves. The seal includes a bottom plate, a sealing gasket and a top plate. The top plate and the bottom plate are respectively provided on the upper and lower sides of the sealing gasket and can squeeze the sealing gasket at the same time.

[0010] Preferably, a fastening bolt is provided through the top plate, a threaded groove is provided on the bottom plate, and perforations are provided on the bottom plate, the sealing gasket and the top plate, and the perforations of the sealing gasket and the bottom plate are staggered. The fastening bolt passes through the sealing gasket thread and is inserted into the threaded groove, and the bottom plate is connected to the first splicing plate.

[0011] Preferably, the lining includes a first tubular liner, two annular liners and two second tubular liners, the two annular liners are respectively arranged at both ends of the first tubular liner, and the two second tubular liners are respectively arranged on the side away from each other of the two annular liners, and the diameter of the first tubular liner is larger than the diameter of the second tubular liner.

[0012] Preferably, the measuring component is arranged in the first tubular lining, two frames are provided, and the central angles of both frames are set to 180°, a first mounting groove and a second mounting groove are provided on the frame, the electrodes and the electromagnetic device are respectively installed in the first mounting groove and the second mounting groove, and a wire groove is provided on the outer side of the frame, which is connected to the mounting groove.

[0013] Preferably, the electromagnetic device includes a shell and a magnetic coil, the magnetic coil is located in the shell, a screw is provided in the middle of the inner side of the shell, the screw passes through the frame and is connected to a nut, and the nut is immersed in the frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is provided with a first splicing plate and a second splicing plate which are detachably connected and constitute a measuring conduit, which can be quickly disassembled according to needs; in addition, detachable electrodes and electromagnetic devices are provided, which facilitates the disassembly of the electrodes and electromagnetic devices, changes the current situation in which the measuring conduit of the existing electromagnetic flowmeter is inconvenient to disassemble, and the structure with a large middle and small ends makes it inconvenient to remove the electrodes and electromagnetic devices, thereby reducing the cost for the manufacturer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the space formed by the first splicing plate and the second splicing plate of the utility model;

[0017] Figure 3 It is a structural diagram of the first splicing plate of the utility model;

[0018] Figure 4 It is a structural diagram of the second splicing plate of the utility model;

[0019] Figure 5 It is a structural diagram of the lining of the utility model;

[0020] Figure 6 It is a structural diagram of the measuring component of the utility model;

[0021] Figure 7 It is a structural diagram of the frame of the utility model;

[0022] Figure 8 It is a structural diagram of the electromagnetic device of the utility model;

[0023] Figure 9 It is a structural diagram of the sealing member of the utility model;

[0024] Figure 10 It is a structural schematic diagram of the filling plate group of the utility model.

[0025] In the figure: 1. display instrument; 2. first splicing plate; 21. flange; 22. first slot; 3. second splicing plate; 31. second slot; 32. arc groove; 4. seal; 41. chassis; 42. threaded groove; 43. sealing gasket; 44. fastening bolt; 45. top plate; 46. perforation; 5. filling plate group; 51. first filling plate; 52. second filling plate; 6. lining; 61. first tubular lining; 62. annular lining; 63. second tubular lining; 7. measuring component; 71. frame; 711. first mounting slot; 712. second mounting slot; 713. nut; 714. wire duct; 72. electrode; 73. electromagnetic device; 731. shell; 732. magnetic coil; 733. screw. DETAILED DESCRIPTION

[0026] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0027] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0028] Because the measuring conduit of an electromagnetic flowmeter is integrated and typically configured with a larger center and smaller ends, and both the magnetic circuit system and electrodes are located within the conduit, a malfunction in the magnetic circuit system or electrodes makes it difficult for maintenance personnel to remove them, potentially requiring replacement of the electromagnetic flowmeter, increasing production costs. To address this issue, this embodiment improves upon existing electromagnetic flowmeters to enable disassembly as needed. The specific technical solution is described below.

[0029] Existing electromagnetic flowmeters are already publicly available, so their structure is briefly described here. Electromagnetic flowmeters generally include a magnetic circuit system, a measuring conduit, electrodes, a lining, and a converter. The lining, magnetic circuit system, and electrodes are positioned inside the measuring conduit, with the lining directly contacting the conduit. A display instrument 1 is positioned above the measuring conduit, and a converter is positioned adjacent to the display instrument 1. The converter amplifies the induced electromotive force signal and converts it into a unified standard signal, suppressing major interference signals. The magnetic circuit system generates a DC or AC magnetic field within the measuring conduit. When a conductive fluid flows through the measuring conduit, the magnetic field cuts through it, generating an electromotive force. Since the electrodes are in direct contact with the conductive fluid, the conductive fluid, electrodes, and converter form a closed circuit, enabling the measurement of the fluid's electromotive force. Because the fluid's electromotive force is proportional to its flow rate, the fluid flow rate can be calculated using parameters such as the flow rate, the cross-section of the measuring conduit, the distance between the electrodes, and the magnetic field strength.

[0030] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 10 As shown, in order to be able to repair or replace the magnetic circuit system or the electrode when it is damaged, the measuring tube is set as the first splicing plate 2 and the second splicing plate 3 in this embodiment. The first splicing plate 2 and the second splicing plate 3 are both set as a structure with a middle size larger than the size at both ends, and ear plates are provided on the edges. Flanges 21 are provided at both ends of the first splicing plate 2. The second splicing plate 3 is arranged in the space formed by the first splicing plate 2 and the flange 21, and bolts are provided through the ear plates, so that the first splicing plate 2 and the second splicing plate 3 are connected under the action of the bolts. To further restrict the relative position of the first and second splicing plates 2 and 3, a first slot 22 and a second slot 31 are provided on the adjacent sidewalls of the first and second splicing plates 2 and 3. A sealing gasket is provided at the first and second slots 22 and 31. A filler plate group 5 is provided in the space formed by the first and second slots 22 and 31. The filler plate group 5 includes a first filler plate 51 and a second filler plate 52. The edges of the first and second filler plates 51 and 52 are respectively inserted into the first and second splicing plates 2 and 3, squeezing the sealing gasket to achieve a stable connection between the filler plates and the splicing plates. Furthermore, the filler plates restrict the position of the first and second splicing plates 2 and 3. This arrangement allows the first and second splicing plates 2 and 3 to be disassembled as needed, facilitating the maintenance or replacement of the magnetic circuit system and electrodes.

[0031] like Figure 2 、 Figure 5 、 Figure 6 、 Figure 7As shown, to measure the conductive fluid, a liner 6 and a measuring assembly 7 are provided on the inner sides of the first and second splicing plates 2 and 3. The liner 6 comprises a first tubular liner 61, two annular liners 62, and two second tubular liners 63. The tubular liner can be made of two plates each with a 180° circular angle. The two annular liners 62 are respectively provided at both ends of the first tubular liner 61, and the two second tubular liners 63 are respectively provided on the side away from each other of the two annular liners 62. The diameter of the first tubular liner 61 is greater than that of the second tubular liner 63. Sealing gaskets are provided at the contact points between the liners to achieve sealed contact between the liners. The liner 6 is made of an electrically insulating material and is provided in contact with the sidewalls of the first and second splicing plates 2 and 3, isolating the conductive fluid from the splicing plates, increasing the corrosion resistance of the measuring conduit, and preventing the induced potential from being short-circuited by the metal measuring conduit wall. The measuring assembly 7 is arranged in the first tubular liner 61, which includes a frame 71, two electrodes 72 and an electromagnetic device 73. The two electrodes 72 are located at the two ends of the same diameter, and the two electromagnetic devices 73 are located at the two ends of the other diameter. The two diameters are perpendicular to each other. There are two frames 71, and the central angle of each is set to 180 degrees. A first mounting groove 711 and a second mounting groove 712 are provided on the frame 71. The electrodes 72 and the electromagnetic device 73 are respectively installed in the first mounting groove 711 and the second mounting groove 712, and neither protrudes from the frame 7. 1, a wire groove 714 is provided on the outer side of the frame 71, and the wire groove 714 is communicated with the mounting groove. The wires of the electrode 72 and the electromagnetic device 73 pass through the frame 71 and are laid in the wire groove 714. Finally, they are sealed and passed through the lining 6 to be connected with the display instrument 1. Specifically, holes can be drilled in the lining 6 to allow the wires to pass through the holes. At the same time, part of the wires are bent and laid between the lining 6 and the frame 71, and a sealing gasket is provided in this area. Through the mutual compression of the frame 71 and the lining 6, the sealing gasket is deformed to cover the channel.

[0032] like Figure 7 、 Figure 8 The figure shows the magnetic field formed within the measuring catheter. Electromagnetic device 73 includes a housing 731 and a magnetic coil 732. Magnetic coil 732 is located within housing 731. A screw 733 is positioned in the center of the inner side of housing 731. Screw 733 extends through frame 71 and is connected to nut 713, which is embedded within frame 71. The action of the upper and lower magnetic coils 732 creates a magnetic field within the distance between them. The arrangement of screw 733 and nut 713 ensures stable mounting of housing 731 on frame 71 and facilitates removal as needed.

[0033] like Figure 4 、 Figure 9As shown, in order to allow the wires to pass through the first splicing plate 2 and the second splicing plate 3 in a sealed manner, an arcuate groove 32 is provided on the top of the first splicing plate 2 and the second splicing plate 3, and a seal 4 is provided in the space formed by the two arcuate grooves 32. The seal 4 includes a chassis 41, a sealing gasket 43 and a top plate 45. The top plate 45 and the chassis 41 are respectively arranged on the upper and lower sides of the sealing gasket 43. A fastening bolt 44 is provided through the top plate 45, and a threaded groove 42 is provided on the chassis 41. A through-hole 46 is provided on the chassis 41, the sealing gasket 43 and the top plate 45, and the through-holes 46 of the sealing gasket 43 and the chassis 41 are staggered. The fastening bolt 44 passes through the sealing gasket 43 and is threaded into the threaded groove 42, and the chassis 41 is connected to the first splicing plate 2. The wire is passed through the through-hole 46. Since the through-holes 46 of the sealing gasket 43 and the bottom plate 41 are staggered, when the fastening bolt 44 is rotated to control the top plate 45 and the bottom plate 41 to approach each other, the sealing gasket 43 is squeezed to deform, and the gap between the top plate 45 and the bottom plate 41 is sealed to prevent liquid leakage.

[0034] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A clamped flow meter, comprising a display instrument (1), characterized in that: A first splicing plate (2) and a second splicing plate (3) are provided below the display instrument (1); the first splicing plate (2) and the second splicing plate (3) are detachably connected and form a measuring conduit; a lining (6) and a measuring assembly (7) are provided on the inner side of the measuring conduit; the measuring assembly (7) comprises a frame (71), an electrode (72) and an electromagnetic device (73); the electrode (72) and the electromagnetic device (73) are both provided on the frame (71) and are both connected to the display instrument (1).

2. The wafer flowmeter according to claim 1, characterized in that: The first splicing plate (2) and the second splicing plate (3) are both configured as a structure in which the middle size is larger than the size at both ends; flanges (21) are provided at both ends of the first splicing plate (2); and the second splicing plate (3) is arranged in a space formed by the first splicing plate (2) and the flanges (21).

3. The wafer flow meter according to claim 2, characterized in that: A first slot (22) and a second slot (31) are provided on the side walls of the first splicing plate (2) and the second splicing plate (3) adjacent to each other, and a filling plate group (5) is provided in the space formed by splicing the first slot (22) and the second slot (31). The filling plate group (5) includes a first filling plate (51) and a second filling plate (52), and two edges of the first filling plate (51) and the second filling plate (52) are respectively inserted into the first splicing plate (2) and the second splicing plate (3).

4. The wafer flow meter according to claim 3, characterized in that: An arcuate groove (32) is provided on the top of each of the first splicing plate (2) and the second splicing plate (3), and a sealing member (4) is provided in the space formed by the two arcuate grooves (32). The sealing member (4) includes a bottom plate (41), a sealing gasket (43) and a top plate (45). The top plate (45) and the bottom plate (41) are respectively provided on the upper and lower sides of the sealing gasket (43) and can squeeze the sealing gasket (43) at the same time.

5. The wafer flow meter according to claim 4, characterized in that: A fastening bolt (44) is provided through the top plate (45), a threaded groove (42) is provided on the bottom plate (41), and through holes (46) are provided on the bottom plate (41), the sealing gasket (43) and the top plate (45), and the through holes (46) of the sealing gasket (43) and the bottom plate (41) are staggered. The fastening bolt (44) passes through the sealing gasket (43) and is threadedly inserted into the threaded groove (42), and the bottom plate (41) is connected to the first splicing plate (2).

6. The wafer flow meter according to claim 1, characterized in that: The lining (6) comprises a first tubular lining (61), two annular liners (62) and two second tubular liners (63), wherein the two annular liners (62) are respectively arranged at both ends of the first tubular lining (61), and the two second tubular liners (63) are respectively arranged on one side of the two annular liners (62) away from each other, and the diameter of the first tubular lining (61) is greater than the diameter of the second tubular lining (63).

7. The wafer flow meter according to claim 6, characterized in that: The measuring assembly (7) is arranged in the first tubular lining (61); two frames (71) are provided, and the central angles of both frames are set to 180 degrees; a first mounting groove (711) and a second mounting groove (712) are provided on the frame (71); the electrode (72) and the electromagnetic device (73) are respectively installed in the first mounting groove (711) and the second mounting groove (712); a wire groove (714) is provided on the outer side surface of the frame (71); the wire groove (714) is communicated with the mounting groove.

8. The wafer flow meter according to claim 7, characterized in that: The electromagnetic device (73) includes a shell (731) and a magnetic coil (732). The magnetic coil (732) is located in the shell (731). A screw (733) is provided in the middle of the inner side of the shell (731). The screw (733) passes through the frame (71) and is connected to a nut (713). The nut (713) is immersed in the frame (71).

Images