A lining-free wear-resistant electromagnetic flowmeter

Abstract

This utility model relates to a non-lining, wear-resistant electromagnetic flowmeter, belonging to the technical field of electromagnetic flowmeters. The non-lining, wear-resistant electromagnetic flowmeter includes a measuring tube body. An electrode sleeve is threadedly connected to the inner side of the measuring tube body. An electrode rod is inserted into the inner side of the electrode sleeve. An electrode signal line is inserted into the outer side of the electrode rod, slightly forward. Two fastening nuts are threadedly connected to the end of the electrode rod. A coil fixing assembly is fixedly installed on the inner side of the measuring tube body. During installation, the electrode rod is inserted into the electrode sleeve, followed by spring washers and gaskets. The electrode sleeve is threadedly connected to the measuring tube body and sealed with adhesive. After the adhesive dries, the upper and lower magnetic yokes are fixed to the welding studs by the fastening nuts, thus fixing the excitation coil to the measuring tube. The entire assembly is then filled with adhesive, and the waterproof connector is tightened to secure the cable until the adhesive dries. The measuring tube has no moving mechanical parts and is suitable for conductive liquids containing impurities and corrosive substances. Flow measurement is unaffected by fluid density and viscosity.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic flow meter technology, specifically relating to a wear-resistant electromagnetic flow meter without lining. Background Technology

[0002] Electromagnetic flowmeters operate based on Faraday's law of electromagnetic induction. Their core principle can be summarized as follows: when a conductive liquid moves in a magnetic field, cutting magnetic field lines, an induced electromotive force is generated in the direction perpendicular to the magnetic field and the flow velocity. The flow rate can be calculated by measuring the magnitude of this electromotive force.

[0003] For example, in Chinese utility model patent CN218673759U, entitled "Electromagnetic Flowmeter," a conduit, bushing, electrode, and pre-tightening assembly are included. The bushing is disposed on the inner wall of the conduit. The electrode includes a flange and a column. The above-mentioned prior art can solve the problem that installers need to repeatedly observe the degree of indentation of the bushing to determine whether the electrode is installed reliably, which is cumbersome and affects work efficiency. However, electromagnetic flowmeters are difficult to operate in different working environments, so a spring-loaded unloading valve is needed now. Utility Model Content

[0004] The purpose of this invention is to provide a simple and reasonably designed wear-resistant electromagnetic flowmeter without lining in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A non-lining, wear-resistant electromagnetic flowmeter includes a measuring tube body, an electrode sleeve threadedly connected to the inner side of the measuring tube body, an electrode rod inserted into the inner side of the electrode sleeve, an electrode signal line inserted into the outer side of the electrode rod, two fastening nuts threadedly connected to the end of the electrode rod, and a coil fixing assembly fixedly installed on the inner side of the measuring tube body.

[0007] As a further optimization of this utility model, the coil fixing assembly includes two excitation coils disposed inside the measuring tube body. Four welding nails are fixedly disposed inside the measuring tube body, and fastening nuts are threadedly connected to the outer sides of the four welding nails. An upper magnetic yoke fixedly disposed outside the two welding nails is abutted against the outer side of the upper excitation coil, and a lower magnetic yoke fixedly disposed outside the two welding nails is abutted against the outer side of the lower excitation coil.

[0008] As a further optimization of this utility model, two mounting grooves are opened on the inner side of the measuring tube body and fixedly disposed on the outer side of the electrode sleeve. A cover plate is provided on the outer side of the measuring tube body. A wire neck is fixedly connected to the top of the cover plate. A waterproof connector is fixedly disposed on the top of the wire neck. A signal cable is fixedly disposed on the inner side of the waterproof connector.

[0009] As a further optimization of this utility model, one end of the signal cable is electrically connected to a plurality of wires that are simultaneously electrically connected to the electrode signal line and the outside of the excitation coil, and the plurality of wires are arranged on the inside of the outgoing neck.

[0010] As a further optimization of this utility model, a spring pad is inserted into the outer rear of the electrode rod, and a gasket is inserted into the middle of the outer side of the electrode rod.

[0011] As a further optimization of this utility model, the top of the lower magnetic yoke is provided with a through hole, and multiple wires are arranged through the inside of the through hole.

[0012] The beneficial effects of this utility model are as follows:

[0013] During installation, the electrode rod is inserted into the electrode sleeve, followed by the spring washer and gasket. After connecting the electrode signal line, it is secured with a fastening nut. The electrode sleeve is threaded to the main body of the measuring tube and sealed with adhesive. After the adhesive dries, the upper and lower magnetic yokes are fixed to the welding studs by the fastening nuts, thus fixing the excitation coil to the measuring tube. The neck of the lead wire is welded to the cover plate and then connected to the measuring tube. The whole assembly is then filled with adhesive, and the waterproof connector is tightened to secure the cable. After the adhesive dries, the measuring tube has no moving mechanical parts and is suitable for conductive liquids containing impurities and corrosive substances. The flow measurement is not affected by the fluid density or viscosity. Attached Figure Description

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

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

[0016] Figure 3 This is a schematic diagram of the main body of the measuring tube of this utility model;

[0017] Figure 4 This is an exploded structural diagram of the coil fixing assembly of this utility model;

[0018] Figure 5 This is a schematic diagram of the exploded structure of the electrode and electrode sleeve of this utility model.

[0019] In the diagram: 1. Measuring tube body; 2. Electrode sleeve; 3. Electrode rod; 4. Spring washer; 5. Gasket; 6. Electrode signal line; 7. Fastening nut one; 8. Coil fixing assembly; 801. Excitation coil; 802. Upper yoke; 803. Lower yoke; 804. Welding stud; 805. Fastening nut two; 9. Cover plate; 10. Outlet neck; 11. Waterproof connector; 12. Signal cable. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example

[0022] like Figure 1 , Figure 2 , Figure 5 As shown, a non-lining wear-resistant electromagnetic flowmeter includes a measuring tube body 1. The measuring tube body 1 is a thickened design without a liner, which can be adapted to high flow rates, silt-containing and other highly wear-resistant environments, and provides a mounting base for other parts. An electrode sleeve 2 is threadedly connected to the inner side of the measuring tube body 1. The electrode sleeve 2 can fix the position of the electrode rod 3 to ensure that the electrode rod 3 can stably contact the fluid in the tube to obtain an induced electromotive force signal. Two mounting grooves are opened on the inner side of the measuring tube body 1. The outer side of the electrode sleeve 2 is fixedly set inside the two mounting grooves. The electrode rod 3 is inserted into the inner side of the electrode sleeve 2. The electrode rod 3 can receive the induced electromotive force generated by the conductive liquid in the tube cutting the magnetic field lines and transmit the signal to subsequent components.

[0023] like Figure 5 As shown, a spring washer 4 is inserted into the rear outer side of the electrode rod 3. The spring washer 4 can generate elastic deformation to prevent the components from loosening after tightening, ensuring the stability of the connection between the electrode rod 3 and other components. A gasket 5 is inserted into the middle outer side of the electrode rod 3. The gasket 5 can enhance the sealing effect, prevent fluid leakage in the pipe, and reduce direct friction between the electrode rod 3 and other components. An electrode signal line 6 is inserted into the front outer side of the electrode rod 3. The electrode signal line 6 can transmit the induced electromotive force signal obtained by the electrode rod 3 to the subsequent signal processing component, providing a signal basis for flow calculation. Two fastening nuts 7 are threadedly connected to the end of the electrode rod 3. The fastening nuts 7 can fasten the electrode rod 3, spring washer 4, gasket 5 and electrode signal line 6 to the electrode sleeve 2 to ensure that the connection of each component is firm.

[0024] like Figure 4As shown, a coil fixing assembly 8 is fixedly installed on the inner side of the measuring tube body 1. The coil fixing assembly 8 can fix the position of the excitation coil 801 to ensure that the excitation coil 801 can stably generate a magnetic field. The coil fixing assembly 8 includes the excitation coil 801. After current is passed through the excitation coil 801, it can generate a uniform magnetic field in the measuring tube body 1, providing the necessary conditions for the conductive liquid to cut the magnetic field lines and generate an induced electromotive force. The outer side of the excitation coil 801 is set on the inner side of the measuring tube body 1. Multiple welding studs 804 are fixedly installed on the inner side of the measuring tube body 1. The welding studs 804 can serve as the mounting carriers for the upper magnetic yoke 802, the lower magnetic yoke 803 and the excitation coil 801, ensuring the fixed position of these components on the measuring tube body 1. The outer side of each welding stud 804 is threaded with a fastening nut 805. The fastening nut 805 can fasten the upper magnetic yoke 802 and the lower magnetic yoke 803 to the welding stud 804 to prevent the magnetic yoke from loosening and affecting the stability of the magnetic field.

[0025] like Figure 2 , Figure 4 As shown, an upper magnetic yoke 802 is abutted against the outer side of one of the excitation coils 801. The inner side of the upper magnetic yoke 802 is fixedly set on the outer side of multiple welding studs 804. The upper magnetic yoke 802 can concentrate the magnetic field generated by the excitation coil 801, enhance the uniformity and intensity of the magnetic field in the measuring tube body 1, and improve the stability of the induced electromotive force signal. A lower magnetic yoke 803 is abutted against the outer side of the other excitation coil 801. The inner side of the lower magnetic yoke 803 is fixedly set on the outer side of multiple welding studs 804. The lower magnetic yoke 803 cooperates with the upper magnetic yoke 802 to concentrate the magnetic field, further optimize the magnetic field distribution in the measuring tube body 1, and ensure that a stable induced electromotive force is generated when the fluid cuts the magnetic field lines. A through hole is opened at the top of the lower magnetic yoke 803, and multiple wires are installed inside the through hole.

[0026] like Figure 2 , Figure 4 As shown, a cover plate 9 is provided on the outside of the measuring tube body 1. The cover plate 9 can protect the components on the outside of the measuring tube body 1 and prevent external dust, moisture and other factors from affecting the normal operation of the components. A wire neck 10 is fixedly connected to the top of the cover plate 9. The wire neck 10 can accommodate wires and provide a neat arrangement space for the wires, preventing the wires from being messy and affecting signal transmission or component installation. Multiple wires are arranged inside the wire neck 10. A waterproof connector 11 is fixedly provided on the top of the wire neck 10. The waterproof connector 11 can seal the connection between the wire neck 10 and the signal cable 12 to prevent external moisture from entering the interior and affecting the wires or signal transmission. A signal cable 12 is fixedly provided inside the waterproof connector 11. The signal cable 12 can transmit the induced electromotive force signal transmitted by the electrode signal line 6 and the relevant signal of the excitation coil 801 to the instrument display or calculation component to realize the output of flow data. Multiple wires are electrically connected to one end of the signal cable 12. The multiple wires are simultaneously electrically connected to the electrode signal line 6 and the excitation coil 801.

[0027] It should be noted that, during installation, this type of wear-resistant electromagnetic flowmeter without lining involves inserting the electrode rod 3 into the electrode sleeve 2, then sequentially fitting the spring washer 4 and gasket 5, connecting the electrode signal line 6, and securing it with the fastening nut 7. The electrode sleeve 2 is then threaded onto the mounting groove of the measuring tube body 1, and thread sealant is applied to the threads for sealing. After the sealant dries for 24 hours, the upper yoke 802 and lower yoke 803 are fixed to the welding stud 804 with the fastening nut 805, thus fixing the excitation coil 801 to the measuring tube body 1. The outlet neck 10 is then welded to the cover plate 9, and after welding, it is welded to the measuring tube body 1. The entire assembly is then potted with sealant, and the signal cable 12 is secured with the waterproof connector 11. The sealant is allowed to dry completely for 24 hours. Since there are no moving mechanical parts inside the measuring tube, it is suitable for conductive liquids containing impurities and corrosive substances, and the flow measurement is unaffected by fluid density, viscosity, or other parameters.

[0028] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A non-lining, wear-resistant electromagnetic flowmeter, comprising a measuring tube body (1), characterized in that, An electrode sleeve (2) is threadedly connected to the inner side of the measuring tube body (1). An electrode rod (3) is inserted into the inner side of the electrode sleeve (2). An electrode signal line (6) is inserted into the outer side of the electrode rod (3) in front. Two fastening nuts (7) are threadedly connected to the end of the electrode rod (3). A coil fixing assembly (8) is fixedly installed on the inner side of the measuring tube body (1).

2. The wear-resistant electromagnetic flowmeter without lining according to claim 1, characterized in that: The coil fixing assembly (8) includes two excitation coils (801) disposed inside the measuring tube body (1). Multiple welding studs (804) are fixedly disposed inside the measuring tube body (1). Each of the multiple welding studs (804) is threaded with a fastening nut (805). The outer side of the upper excitation coil (801) abuts against an upper magnetic yoke (802) fixedly disposed outside the multiple welding studs (804). The outer side of the lower excitation coil (801) abuts against a lower magnetic yoke (803) fixedly disposed outside the multiple welding studs (804).

3. The wear-resistant electromagnetic flowmeter without lining according to claim 2, characterized in that: The inner side of the measuring tube body (1) has two mounting grooves that are fixedly disposed on the outer side of the electrode sleeve (2). The outer side of the measuring tube body (1) is provided with a cover plate (9). The top of the cover plate (9) is fixedly connected with a wire neck (10). The top of the wire neck (10) is fixedly provided with a waterproof connector (11). The inner side of the waterproof connector (11) is fixedly provided with a signal cable (12).

4. The wear-resistant electromagnetic flowmeter without lining according to claim 3, characterized in that: One end of the signal cable (12) is electrically connected to a plurality of wires that are simultaneously electrically connected to the outside of the electrode signal line (6) and the excitation coil (801), and the plurality of wires are arranged inside the outgoing neck (10).

5. The wear-resistant electromagnetic flowmeter without lining according to claim 1, characterized in that: A spring pad (4) is inserted into the rear of the outer side of the electrode rod (3), and a pad (5) is inserted into the middle of the outer side of the electrode rod (3).

6. The wear-resistant electromagnetic flowmeter without lining according to claim 4, characterized in that: The top of the lower magnetic yoke (803) has a through hole, and multiple wires are arranged through the inside of the through hole.

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