Split combined type electromagnetic flowmeter

Abstract

The utility model discloses a split combined type electromagnetic flowmeter, which relates to the technical field of electromagnetic flowmeters and comprises a first shell, the top of the first shell is connected with a second shell, and four supporting seats are fixed above the inside of the second shell and below the inside of the first shell. The tops of the four supporting seats and the bottoms of the other four supporting seats are connected with protective shells, and coils are installed in the two protective shells. Clamping frames penetrate through the outer surfaces and the backs of the first shell and the second shell, electrodes are connected to the interiors of the two clamping frames through sealing sheaths, and two clamping bolts penetrate through one sides of the two clamping frames. Through the arrangement of the first shell and the second shell, the split type structure of the first shell and the second shell is convenient for splitting the shell of the electromagnetic flow meter, so that the coil or the electrode in the electromagnetic flow meter can be independently replaced; maintenance and replacement are convenient, and waste is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic flowmeter technology, specifically a split-type combined electromagnetic flowmeter. Background Technology

[0002] An electromagnetic flowmeter is an instrument used to measure the volumetric flow rate of conductive liquids. Its working principle is based on Faraday's law of electromagnetic induction. When a conductive fluid flows through the flowmeter's measuring tube, an excitation coil outside the tube applies a magnetic field perpendicular to the fluid flow direction. Charged ions in the fluid move within this magnetic field, generating an induced voltage. The magnitude of this electromotive force is proportional to the average flow velocity of the fluid. This voltage signal is detected by electrodes mounted on both sides of the measuring tube wall, and the flow rate can be calculated by combining this signal with the cross-sectional area of ​​the measuring tube.

[0003] Existing electromagnetic flow meters encapsulate the coil and electrodes inside a housing. When the coil or electrode components are damaged, disassembly and repair are very cumbersome. When these two components are damaged and the electromagnetic flow meter cannot work properly, the entire electromagnetic flow meter is usually replaced directly. It is possible that one or more coils and electrodes can work properly, resulting in a lot of waste. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a split-type combined electromagnetic flowmeter to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a split-type combined electromagnetic flowmeter, comprising a first outer shell, a second outer shell connected to the top of the first outer shell, and four support bases fixed to the upper part of the second outer shell and the lower part of the first outer shell, wherein the top of the four support bases and the bottom of the other four support bases are connected to protective shells, and coils are installed inside the two protective shells; clamping frames penetrate the outer surface and back of the first and second outer shells, and electrodes are connected inside the two clamping frames through sealing sleeves, and two clamping bolts penetrate one side of each of the two clamping frames.

[0006] By adopting the above technical solution, when the coil is damaged, the first outer shell, the second outer shell, and the clamping frame can be separated, and the protective shell can be directly removed for replacement without any misalignment. The coil is encapsulated and cured with epoxy resin to form a protective shell that encloses the coil, increasing the coil's stability and waterproof and dustproof properties. During installation, simply place the protective shell on the support base, then reassemble the first outer shell, the second outer shell, and the clamping frame. The support base holds the outer ring of the protective shell against the limit, the insulating lining holds the inner ring of the protective shell against the limit, and the clamping frame holds the outer surface and back of the protective shell against the limit, preventing the protective shell from causing the coil to loosen or shift. When the electrode is damaged, simply remove the clamping frame from the first... The electrode is pulled out from the outer and second outer shells, and then the clamping bolts are removed. At this point, the clamping frame is no longer affected by pressure on both sides, thus ending the clamping and limiting of the sealing sleeve and electrode. The sealing sleeve and electrode can then be directly removed and replaced. During installation, first insert the electrode into the sealing sleeve, then insert the sealing sleeve into the clamping frame, and then tighten the clamping bolts through both sides of the clamping frame. Tightening the clamping bolts will apply pressure to both sides of the clamping frame, thereby clamping the sealing sleeve and electrode. The sealing sleeve prevents the electrode from being crushed and can fill the gap between the electrode, the clamping frame and the insulating lining, preventing liquid from leaking into the first and second outer shells.

[0007] Furthermore, a first bolt connects the first outer shell and the second outer shell, and the second outer shell is detachably connected to the first outer shell via the first bolt.

[0008] By adopting the above technical solution, the workers reassembled the first outer shell and screwed in all the first bolts to complete the fastening between the first and second outer shells.

[0009] Furthermore, a second bolt connects the clamping frame to the first housing and the second housing, and the clamping frame is detachably connected to the first housing and the second housing via the second bolt.

[0010] By adopting the above technical solution, when there is damage to the components inside the first and second outer shells, the workers first remove the first and second bolts. After removing the second bolt, the workers can pull out the two clamping frames horizontally. After removing the clamping frames and the first bolt, the workers can remove the second outer shell upwards, thereby completing the separation of the first outer shell, the second outer shell, and the clamping frames.

[0011] Furthermore, a first wiring groove is provided between the eight support bases, and a second wiring groove is provided inside the clamping frame.

[0012] By adopting the above technical solution, the existence of the first wiring slot and the second wiring slot provides sufficient space within the first housing, the second housing, and the clamping frame for cable routing.

[0013] Furthermore, the protective shell is made of epoxy resin material, and the protective shell is fixedly connected to the coil through a potting process.

[0014] By adopting the above technical solution, the coil is encapsulated and cured with epoxy resin to form a protective shell that wraps around the coil, thereby increasing the coil's stability and waterproof and dustproof properties.

[0015] Furthermore, the clamping frame has a U-shaped cross-section, and the electrode is detachably connected to the sealing sleeve.

[0016] By adopting the above technical solution, during installation, the staff first inserts the electrode into the sealing sleeve, then inserts the sealing sleeve into the clamping frame, and then tightens the clamping bolts through both sides of the clamping frame. Tightening the clamping bolts will apply pressure to both sides of the clamping frame, thereby clamping the sealing sleeve and the electrode together.

[0017] Furthermore, the sealing sleeve is made of fluororubber or silicone rubber.

[0018] By adopting the above technical solutions, fluororubber sealing sleeves have excellent corrosion resistance, especially perfluororubber. Compared with fluororubber, silicone rubber sealing sleeves have better heat resistance and are suitable for sealing media at higher temperatures. Sealing sleeves made of different materials can be selected according to different situations.

[0019] Furthermore, the first housing has insulating linings running through both sides, and the second housing has a converter connected to its top.

[0020] By adopting the above technical solution, the conductive liquid passes through the insulating liner, which acts as an isolation layer to completely separate the conductive fluid from the first and second outer shells, preventing direct contact between the fluid and the first and second outer shells that could cause a short circuit in the electrical signal. It also protects the first and second outer shells from corrosion or wear. During this process, the coil being energized generates a uniform magnetic field perpendicular to the fluid flow direction within the insulating liner. When the conductive fluid cuts the magnetic field lines, the charged ions in the fluid generate an induced voltage due to their movement. Electrodes embedded in the inner wall of the insulating liner and in contact with the fluid are responsible for detecting this induced voltage. The position of the electrodes is perpendicular to both the magnetic field direction and the fluid flow direction, ensuring that the induced electromotive force is proportional to the flow velocity. Finally, the detected voltage signal is processed by a converter, and combined with the known cross-sectional area of ​​the measuring tube and the magnetic field strength, the instantaneous flow rate and cumulative flow rate of the fluid are calculated.

[0021] Furthermore, the protective shell abuts against the insulating lining, the support base, and the clamping frame, respectively, and the two protective shells are detachably connected to the first outer shell and the second outer shell, respectively.

[0022] By adopting the above technical solution, the workers reassembled the first outer shell and tightened all the first bolts and the remaining second bolts. The outer ring of the protective shell was held in place by the support base, the inner ring of the protective shell was held in place by the insulating lining, and the clamping frame was held in place by the outer surface and back of the protective shell, thus preventing the protective shell from causing the coil to loosen and shift.

[0023] In summary, the present invention has the following main advantages:

[0024] 1. The present invention, through the setting of the first outer shell and the second outer shell, has a split structure that makes it easy to disassemble the outer shell of the electromagnetic flowmeter, thereby facilitating the individual replacement of the internal coil or electrodes; it is convenient for maintenance and replacement, and reduces waste;

[0025] 2. This utility model, through the arrangement of a support base, protective shell, and coil, allows for easy replacement of the coil when it is damaged. The first outer shell, second outer shell, and clamping frame can be separated, and the protective shell can be directly removed without any misalignment. The coil is encapsulated and cured with epoxy resin to form a protective shell that encloses the coil, increasing its stability and providing waterproof and dustproof protection. During installation, simply place the protective shell on the support base, then reassemble the first outer shell, second outer shell, and clamping frame. The support base holds the outer ring of the protective shell in place, the insulating lining holds the inner ring of the protective shell in place, and the clamping frame holds the outer surface and back of the protective shell in place, preventing the protective shell from causing the coil to loosen or shift. This facilitates individual coil replacement.

[0026] 3. This utility model, through the arrangement of a clamping frame, clamping bolts, a sealing sleeve, and an electrode, allows for easy replacement of the electrode when it is damaged. Simply pull the clamping frame out of the first and second outer shells, then remove the clamping bolts. At this point, the clamping frame is no longer under pressure, thus ending the clamping and limiting of the sealing sleeve and electrode. The sealing sleeve and electrode can then be directly removed and replaced. During installation, first insert the electrode into the sealing sleeve, then insert the sealing sleeve into the clamping frame. Next, tighten the clamping bolts through both sides of the clamping frame. Tightening the clamping bolts applies pressure to both sides of the clamping frame, thereby clamping the sealing sleeve and electrode. The sealing sleeve prevents the electrode from cracking and fills the gap between the electrode, the clamping frame, and the insulating lining, preventing liquid leakage into the first and second outer shells. This facilitates individual electrode replacement. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a side sectional view of the clamping frame of this utility model;

[0029] Figure 3 This is a side sectional view of the protective shell structure of this utility model;

[0030] Figure 4 This is a schematic diagram of the protective shell structure of this utility model;

[0031] Figure 5 This is a schematic diagram of the clamping frame structure of this utility model.

[0032] Figure 6 This is a schematic diagram of the first outer shell structure of this utility model in an explosion.

[0033] In the figure: 1. First outer shell; 2. Second outer shell; 3. Converter; 4. Insulating lining; 5. Support base; 6. Protective shell; 7. Coil; 8. Clamping frame; 9. Clamping bolt; 10. Sealing sleeve; 11. Electrode; 12. First wiring groove; 13. Second wiring groove; 14. First bolt; 15. Second bolt. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] The embodiments of this utility model will be described below based on its overall structure.

[0036] Example 1:

[0037] A split-type combined electromagnetic flowmeter, such as Figures 1-6 As shown, the device includes a first outer shell 1, a second outer shell 2 connected to the top of the first outer shell 1, and a first bolt 14 connecting the first outer shell 1 and the second outer shell 2. The second outer shell 2 is detachably connected to the first outer shell 1 via the first bolt 14. When any component inside the first outer shell 1 or the second outer shell 2 is damaged, the worker first removes the first bolt 14 and the second bolt 15. After removing the second bolt 15, the worker can pull out the two clamping frames 8 laterally. After removing the clamping frames 8 and the first bolt 14, the worker can remove the second outer shell 2 upwards, thereby completing the separation of the first outer shell 1, the second outer shell 2, and the clamping frames 8. When separating the three, the worker should pay attention to separating the cable interface to avoid the cable being torn.

[0038] Four support bases 5 are fixed inside the upper part of the second outer shell 2 and the lower part of the first outer shell 1. A first wiring groove 12 is provided between the eight support bases 5. Protective shells 6 are connected to the top of four support bases 5 and the bottom of the other four support bases 5. The protective shells 6 abut against the insulating lining 4, the support bases 5, and the clamping frame 8, respectively. Two protective shells 6 are detachably connected to the first outer shell 1 and the second outer shell 2, respectively. The protective shells 6 are made of epoxy resin. Coils 7 are installed inside both protective shells 6. The protective shells 6 are fixed to the coils 7 through a potting process. The protective shells 6 originally located inside the second outer shell 2 can be directly removed for replacement. When removing the protective shells 6 located inside the first outer shell 1, the operator first presses the top of the protective shell 6. Because the protective shell 6 is arc-shaped, it revolves around the insulating lining 4, causing the protective shell 6 to extend out of the first outer shell 1. At this point, the operator can remove the protective shell 6. The coil 7 is potted and cured with epoxy resin to form a protective shell. The protective shell 6 encloses the coil 7, increasing the stability and waterproof / dustproof properties of the coil 7. Workers simply need to rotate one protective shell 6 and place it onto the support base 5 inside the first outer shell 1, then place the other protective shell 6 directly on top of the insulating liner 4. Next, the worker reinstalls the clamping frame 8 and secures it to the first outer shell 1 with the second bolt 15 to prevent the protective shell 6 on top of the insulating liner 4 from slipping off. Then, the worker reinstalls the cable interface. The presence of the first wiring groove 12 and the second wiring groove 13 provides sufficient space within the first outer shell 1, the second outer shell 2, and the clamping frame 8 for cable routing. Finally, the worker reinstalls the first outer shell 1 and tightens all the first bolts 14 and the remaining second bolts 15. The support base 5 holds the outer ring of the protective shell 6 against its limit, the insulating liner 4 holds the inner ring of the protective shell 6 against its limit, and the clamping frame 8 holds the outer surface and back of the protective shell 6 against its limit, preventing the protective shell 6 from causing the coil 7 to loosen or shift.

[0039] Clamping frames 8 penetrate the outer surfaces and backs of both the first outer shell 1 and the second outer shell 2. Second bolts 15 connect the clamping frames 8 to the first outer shell 1 and the second outer shell 2, allowing for detachable connection. A second wiring groove 13 is provided inside the clamping frame 8. Electrodes 11 are connected to both clamping frames 8 via sealing sleeves 10. The clamping frame 8 has a U-shaped cross-section, and two clamping bolts 9 penetrate one side of each clamping frame 8. Electrodes 11 are detachably connected to the sealing sleeves 10. If replacing electrodes 11, the operator first removes the clamping bolts 9. At this point, the clamping frames 8 are no longer under pressure, thus ending the clamping and limiting of the sealing sleeves 10 and electrodes 11. Workers can directly remove and replace the sealing sleeve 10 and electrode 11. During installation, workers first insert the electrode 11 into the sealing sleeve 10, then insert the sealing sleeve 10 into the clamping frame 8, and then tighten the clamping bolts 9 through both sides of the clamping frame 8. Tightening the clamping bolts 9 will apply pressure to both sides of the clamping frame 8, thereby clamping the sealing sleeve 10 and electrode 11. The sealing sleeve 10 prevents the electrode 11 from being crushed and can subsequently fill the gap between the electrode 11, the clamping frame 8 and the insulating liner 4, preventing liquid leakage into the first housing 1 and the second housing 2. After that, workers connect the cable of the electrode 11 and put the clamping frame 8 back into the first housing 1 and the second housing 2 and tighten it with the second bolt 15.

[0040] See Figure 1 , Figure 2 , Figure 3 and Figure 6 In the above embodiment, insulating linings 4 penetrate both sides of the first outer shell 1, and a converter 3 is connected to the top of the second outer shell 2. The conductive liquid passes through the insulating linings 4, which act as an isolation layer to completely separate the conductive fluid from the first and second outer shells 1 and 2, preventing direct contact between the fluid and the first and second outer shells 1 and 2 that could cause a short circuit in the electrical signal. At the same time, the first and second outer shells 1 and 2 are protected from corrosion or wear. During this process, the coil 7 is energized, which generates a uniform magnetic field perpendicular to the direction of fluid flow within the insulating lining 4. When the conductive fluid cuts the magnetic field lines, the charged ions in the fluid generate an induced voltage due to their movement. The electrode 11, embedded in the inner wall of the insulating lining 4 and in contact with the fluid, is responsible for detecting this induced voltage. The position of the electrode 11 is perpendicular to the direction of the magnetic field and the direction of fluid flow, ensuring that the induced electromotive force is proportional to the flow velocity. Finally, the detected voltage signal is processed by the converter 3, and combined with the known cross-sectional area of ​​the measuring tube and the magnetic field strength, the instantaneous flow rate and cumulative flow rate of the fluid are calculated.

[0041] Example 2:

[0042] Based on the above embodiment one, the following settings are now adopted to be applicable to different scenarios.

[0043] See Figure 2 , Figure 4 and Figure 5 In the above embodiments, the sealing sleeve 10 is made of fluororubber or silicone rubber. Fluororubber sealing sleeve 10 has excellent corrosion resistance, especially perfluororubber. Silicone rubber sealing sleeve 10 has better heat resistance than fluororubber and is suitable for sealing media at higher temperatures. Different materials of sealing sleeve 10 can be selected according to different situations.

[0044] The implementation principle of this utility model is as follows: First, the conductive liquid passes through the insulating liner 4. The insulating liner 4 acts as an isolation layer, completely separating the conductive fluid from the first outer shell 1 and the second outer shell 2, preventing the fluid from directly contacting the first outer shell 1 and the second outer shell 2 and causing a short circuit in the electrical signal. At the same time, it protects the first outer shell 1 and the second outer shell 2 from corrosion or wear. During this period, the coil 7 is energized, which generates a uniform magnetic field perpendicular to the direction of fluid flow in the insulating liner 4. When the conductive fluid cuts the magnetic field lines, the charged ions in the fluid generate an induced voltage due to their movement. The electrode 11, which is embedded in the inner wall of the insulating liner 4 and in contact with the fluid, is responsible for detecting this induced voltage. The position of the electrode 11 is perpendicular to the direction of the magnetic field and the direction of fluid flow, ensuring that the induced electromotive force is proportional to the flow velocity. Finally, the detected voltage signal is processed by the converter 3. Combined with the known cross-sectional area of ​​the measuring tube and the magnetic field strength, the instantaneous flow rate and cumulative flow rate of the fluid are calculated.

[0045] When any component inside the first outer shell 1 and the second outer shell 2 is damaged, the worker first removes the first bolt 14 and the second bolt 15. After removing the second bolt 15, the worker can pull out the two clamping frames 8 horizontally. After removing the clamping frames 8 and the first bolt 14, the worker can remove the second outer shell 2 upwards, thus completing the separation of the first outer shell 1, the second outer shell 2 and the clamping frames 8. When separating the three, the worker should pay attention to separating the cable interface to avoid the cable being torn.

[0046] At this point, the protective shell 6 has no limit. The protective shell 6 originally located inside the second outer shell 2 can be directly removed for replacement. When disassembling the protective shell 6 located inside the first outer shell 1, the worker first presses the top of the protective shell 6. Because the protective shell 6 is arc-shaped, it revolves around the insulating lining 4, causing the protective shell 6 to extend out of the first outer shell 1. At this point, the worker can remove the protective shell 6. The coil 7 is encapsulated and cured with epoxy resin, forming a protective shell 6 that wraps around the coil 7, increasing the stability and waterproof / dustproof properties of the coil 7. The worker only needs to rotate one protective shell 6 and place it onto the support base 5 inside the first outer shell 1, then place the other protective shell 6 directly on top of the insulating lining 4. Afterwards, the worker... First, the operator reinstalls the clamping frame 8 and secures it to the first outer shell 1 using the second bolt 15 to prevent the protective shell 6 on top of the insulating liner 4 from slipping off. Then, the operator reinstalls the cable interface. The presence of the first wiring groove 12 and the second wiring groove 13 provides sufficient space for the cable to pass through the first outer shell 1, the second outer shell 2, and the clamping frame 8 for wiring. Subsequently, the operator reinstalls the first outer shell 1 and tightens all the first bolts 14 and the remaining second bolts 15 to complete the tightening. The outer ring of the protective shell 6 is held in place by the support base 5, the inner ring of the protective shell 6 is held in place by the insulating liner 4, and the clamping frame 8 is held in place by the outer surface and back of the protective shell 6 to prevent the protective shell 6 from causing the coil 7 to loosen and shift.

[0047] If the electrode 11 is to be replaced, the operator first removes the clamping bolt 9. At this time, the clamping frame 8 is no longer affected by pressure on both sides, thus ending the clamping and limiting of the sealing sleeve 10 and the electrode 11. The operator can then directly remove the sealing sleeve 10 and the electrode 11 for replacement. During installation, the operator first inserts the electrode 11 into the sealing sleeve 10, then inserts the sealing sleeve 10 into the clamping frame 8, and then inserts the clamping bolt 9 through both sides of the clamping frame 8 and tightens it. Tightening the clamping bolt 9 will apply pressure to both sides of the clamping frame 8, thereby clamping the sealing sleeve 10 and the electrode 11. The sealing sleeve 10 prevents the electrode 11 from being crushed and can subsequently fill the gap between the electrode 11, the clamping frame 8 and the insulating lining 4, preventing liquid leakage into the first housing 1 and the second housing 2. After that, the operator connects the cable of the electrode 11 and puts the clamping frame 8 back into the first housing 1 and the second housing 2 and tightens it with the second bolt 15.

[0048] Of course, sealing structures such as sealing strips and gaskets can also be added to the contact surfaces between the first housing 1, the second housing 2, and the clamping frame 8 to reduce the occurrence of external media entering the first housing 1 and the second housing 2. Adding extra seals is a conventional choice and does not require creative effort, so it is not recorded in the technical solution.

[0049] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A split-type combined electromagnetic flowmeter, comprising a first outer casing (1), characterized in that: The first outer shell (1) is connected to the top of the second outer shell (2), and four support seats (5) are fixed inside the upper part of the second outer shell (2) and inside the lower part of the first outer shell (1). The top of the four support seats (5) and the bottom of the other four support seats (5) are connected to protective shells (6), and coils (7) are installed inside the two protective shells (6). The outer surface and back of the first outer shell (1) and the second outer shell (2) are both penetrated by clamping frames (8), and electrodes (11) are connected inside the two clamping frames (8) through sealing sleeves (10). Two clamping bolts (9) are penetrated on one side of the two clamping frames (8).

2. The split-type combined electromagnetic flowmeter according to claim 1, characterized in that: A first bolt (14) is connected between the first outer shell (1) and the second outer shell (2), and the second outer shell (2) is detachably connected to the first outer shell (1) through the first bolt (14).

3. The split-type combined electromagnetic flowmeter according to claim 2, characterized in that: The clamping frame (8) is connected to the first outer shell (1) and the second outer shell (2) by a second bolt (15), and the clamping frame (8) is detachably connected to the first outer shell (1) and the second outer shell (2) by the second bolt (15).

4. The split-type combined electromagnetic flowmeter according to claim 3, characterized in that: A first wiring groove (12) is provided between the eight support bases (5), and a second wiring groove (13) is provided inside the clamping frame (8).

5. The split-type combined electromagnetic flowmeter according to claim 1, characterized in that: The protective shell (6) is made of epoxy resin material, and the protective shell (6) is fixedly connected to the coil (7) through a potting process.

6. The split-type combined electromagnetic flowmeter according to claim 4, characterized in that: The clamp (8) has a U-shaped cross-section, and the electrode (11) is detachably connected to the sealing sleeve (10).

7. The split-type combined electromagnetic flowmeter according to claim 6, characterized in that: The sealing sleeve (10) is made of fluororubber or silicone rubber.

8. The split-type combined electromagnetic flowmeter according to claim 1, characterized in that: The first housing (1) has insulating linings (4) extending through both sides, and the second housing (2) has a converter (3) connected to its top.

9. The split-type combined electromagnetic flowmeter according to claim 8, characterized in that: The protective shell (6) abuts against the insulating lining (4), the support base (5) and the clamping frame (8) respectively, and the two protective shells (6) are detachably connected to the first outer shell (1) and the second outer shell (2) respectively.

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