A mosaic electrode ceramic carbon fiber composite tube

Abstract

The utility model discloses an inlaying type electrode ceramic carbon fiber composite pipe relates to electromagnetic flowmeter technical field, including flowmeter shell and the flange disc connected in flowmeter shell both ends, the electrode head is embedded with the ceramic guide pipe through the present application, and the metal powder of metal material is directly disposable with ceramic guide pipe sintering as a whole through gradient sintering process, the making mode of the electrode head of traditional ceramic guide pipe adopts secondary sintering, and the sealing effect is far inferior to the excellent performance of integrated sintering, is favorable for improving the sealing effect of electrode head place of electromagnetic flowmeter, the present application sets up the composite layer between ceramic guide pipe and flowmeter shell, solves the corresponding buffer measure that traditional ceramic guide pipe is directly arranged in flowmeter shell is not, leads to ceramic guide pipe to receive the stress of flowmeter shell influence when thermal expansion and cold shrinkage can not release easily damage the problem of problem, is favorable for improving the practicality of electromagnetic flowmeter.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic flowmeter technology, specifically to an embedded electrode ceramic carbon fiber composite tube. Background Technology

[0002] Electromagnetic flowmeters are velocity-type flowmeters that measure conductive media based on Faraday's law of electromagnetic induction. They mainly consist of a sensor and a converter and are widely used in various industrial applications. They have advantages such as high measurement accuracy, wide range, and no flow obstruction. The sensor is an important component of the electromagnetic flowmeter, which is the device that converts the flow signal into a voltage signal and determines the accuracy and stability of the electromagnetic flowmeter. The sensor mainly consists of a metal conduit lined with insulating material, an excitation generation system, and a signal output system. With the development of technology, electromagnetic flowmeters are gradually using ceramic as the conduit lining.

[0003] Traditional ceramic conduit electrode heads are manufactured using a two-stage sintering process, which results in a sealing effect far inferior to that of integrally sintered materials. Furthermore, the difference in thermal expansion coefficients between the metal and ceramic during the sintering process can easily lead to thermal cracking, resulting in a poor sealing effect at the electrode head.

[0004] Meanwhile, traditional ceramic conduits are directly installed in the flow meter housing without corresponding buffering measures. When the ceramic conduits expand and contract with temperature, the stress caused by the flow meter housing cannot be released and they are easily damaged. Furthermore, during installation or transportation, when subjected to external impacts or pipeline stress, the ceramic conduits are also very easy to break, resulting in poor practical performance of the electromagnetic flow meter. Utility Model Content

[0005] To address the above problems, this utility model provides an embedded electrode ceramic carbon fiber composite tube, which solves the aforementioned issues.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an embedded electrode ceramic carbon fiber composite tube, comprising a flow meter housing and flanges connected to both ends of the flow meter housing, wherein a lining mechanism is connected inside the flow meter housing;

[0007] The lining mechanism includes a ceramic conduit, the outside of which is connected to a composite layer. The outer side of the composite layer contacts the inner side of the flow meter housing. The outside of the ceramic conduit is connected to several locking platforms. The inner side of the composite layer is provided with several locking slots. The outside of the locking platforms is connected to the inside of the locking slots.

[0008] The ceramic conduit has three electrode holes on its outer side, and each electrode hole is equipped with an electrode head. The electrode head is sintered in the ceramic conduit and is integrally formed with the ceramic conduit.

[0009] Preferably, the outer side of the composite layer has three through holes, each corresponding to an electrode hole.

[0010] Preferably, a copper terminal is installed in the through hole, and an insulating sleeve is installed between the copper terminal and the through hole.

[0011] Preferably, one end of the wiring copper post is threadedly connected to the electrode hole and to the electrode head, and the other end of the wiring copper post has a threaded hole in which a screw is connected.

[0012] Preferably, two coils are mounted on the outside of the composite layer, and the two coils are symmetrically distributed.

[0013] Preferably, a conduit is connected to the outside of the flow meter housing, and a conversion display is connected to the top of the conduit.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This application pre-embeds the ceramic conduit and electrode head, and uses a gradient sintering process to directly sinter the metal powder of the metal material into the ceramic conduit in one go. The electrode head signal lead-out uses a wired copper post threaded connection, which makes the installation more convenient. This solves the problem that the traditional ceramic conduit electrode head adopts a secondary sintering manufacturing method, and the sealing effect is far inferior to that of one-piece molding sintering. This is beneficial to improving the sealing effect at the electrode head of the electromagnetic flowmeter.

[0016] 2. This application buffers the stress generated by the thermal expansion and contraction of the ceramic conduit by setting a composite layer between the ceramic conduit and the flow meter housing. The composite layer can compensate for stress and deformation, which solves the problem that the traditional ceramic conduit is directly set in the flow meter housing without corresponding buffering measures. As a result, the stress of the ceramic conduit caused by the flow meter housing during thermal expansion and contraction cannot be released and it is easy to be damaged. This is beneficial to extend the service life of the ceramic conduit and improve the practical performance of the electromagnetic flow meter. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the flow meter housing of this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the lining mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of region A of this utility model;

[0021] Figure 5This is a schematic diagram of the composite layer structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the ceramic conduit structure of this utility model.

[0023] The diagram shows the following labels: 1. Flowmeter housing; 2. Flange; 3. Lining mechanism; 4. Ceramic conduit; 5. Clamping platform; 6. Clamping slot; 7. Composite layer; 8. Through hole; 9. Electrode hole; 10. Electrode head; 11. Wiring copper post; 12. Threaded hole; 13. Screw; 14. Insulating sleeve; 15. Coil; 16. Through conduit; 17. Converter display. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0025] Please see Figures 1 to 6 An embedded electrode ceramic carbon fiber composite tube includes a flow meter housing 1 and flanges 2 connected to both ends of the flow meter housing 1. The electromagnetic flow meter is connected to the flow pipe through the flanges 2 at both ends to install and fix the electromagnetic flow meter. A lining mechanism 3 is connected inside the flow meter housing 1.

[0026] The lining mechanism 3 includes a ceramic conduit 4, and a composite layer 7 is connected to the outside of the ceramic conduit 4. The composite layer 7 is made of carbon fiber composite material. Using carbon fiber composite material as a reinforcing material, it has the characteristics of light weight and high strength. Therefore, while increasing the strength of the ceramic conduit 4, the thickness of the ceramic conduit 4 can be reduced, thereby reducing the weight of the ceramic conduit 4. The outer side of the composite layer 7 is in contact with the inner side of the flow meter housing 1. Several locking platforms 5 are connected to the outside of the ceramic conduit 4. Several locking grooves 6 are opened on the inner side of the composite layer 7. The outer side of the locking platform 5 is connected to the inner side of the locking groove 6. The composite layer 7 is bonded to the outside of the ceramic conduit 4. Specifically, the locking groove 6 on the inner side of the composite layer 7 cooperates with the locking platform 5 on the outer side of the ceramic conduit 4. In this way, the strength of the ceramic conduit 4 when it is combined with the composite layer 7 can be improved, and the risk of the ceramic conduit 4 breaking due to its high brittleness under axial or tangential force can also be reduced.

[0027] It should be further added that even if the ceramic conduit 4 is damaged during installation and use, the composite layer 7 can prevent the flow meter from leaking immediately after the damage, thus improving the safety of the production equipment.

[0028] Three electrode holes 9 are provided on the outer side of the ceramic conduit 4, and each electrode hole 9 is provided with an electrode head 10. It should be further noted that the electrode holes 9 are internally threaded. On the one hand, during the sintering process, because the metal powder of the metal material is directly sintered with the ceramic conduit 4 in one go through the gradient sintering process, the metal powder in the internal thread can improve the firmness of the connection between the electrode head 10 and the electrode hole 9, and also facilitate the transmission of electrical signals. On the other hand, the internal thread of the electrode hole 9 can also be conveniently connected to the wiring copper post 11. Two of the three electrode heads 10 are symmetrically used as detection electrode heads 10, and the other is a grounding electrode head 10. The grounding electrode head 10 provides a stable zero potential reference for the entire measurement system through grounding, so that the signal detected by the electrode can be measured with an accurate reference, eliminating the influence of potential drift and other factors on the measurement results, and improving the accuracy and stability of the measurement.

[0029] It should be noted that when the electromagnetic flowmeter is working, an induced voltage is generated between the two symmetrical electrode heads 10. The electrode heads 10 are sintered in the ceramic conduit 4, and the electrode heads 10 and the ceramic conduit 4 are integrally formed. Specifically, the metal powder of the metal material is directly sintered with the ceramic conduit 4 in one step through a gradient sintering process. The signal lead-out of the electrode head 10 uses a threaded connection of the wiring copper post 11, which makes the installation more convenient. This solves the problem that the traditional ceramic conduit electrode head adopts a secondary sintering manufacturing method, and the sealing effect is far inferior to that of integral sintering. In addition, the difference in thermal expansion coefficients between the metal and ceramic when the electrode head 10 is sintered and then sintered with the ceramic conduit 4 can easily cause thermal cracking during the firing process.

[0030] Three through holes 8 are provided on the outer side of the composite layer 7, and the three through holes 8 correspond to the electrode holes 9 respectively.

[0031] A copper terminal 11 is installed in the through hole 8, and an insulating sleeve 14 is installed between the copper terminal 11 and the through hole 8. The insulating sleeve 14 is a PTFE sleeve, which is mainly used for the insulation of the electrode head 10.

[0032] One end of the copper terminal 11 is threaded to the electrode hole 9 and connected to the electrode head 10. During installation, the copper terminal 11 passes through the insulating sleeve 14 and is installed in the through hole 8. Furthermore, one end of the copper terminal 11 is threaded to the electrode hole 9. It should be further noted that the copper terminal 11 needs to be installed until it contacts the electrode head 10 so that the copper terminal 11 can transmit the induced voltage generated by the electrode head 10.

[0033] Specifically, the other end of the wiring copper post 11 is connected to a screw 13, which connects and fixes the electrode wire to the wiring copper post 11, so that the induced voltage is transmitted to the conversion display 17 through the wiring copper post 11 and then through the electrode wire. The other end of the wiring copper post 11 is provided with a threaded hole 12, and a screw 13 is connected in the threaded hole 12.

[0034] Two coils 15 are installed on the outside of the composite layer 7. The two coils 15 are symmetrically distributed. When the electromagnetic flowmeter is working, the two coils 15 are energized and a magnetic field is formed between the two coils 15. This magnetic field force causes the negatively charged and positively charged particles in the fluid to separate when passing through the magnetic field. The separation causes an induced voltage to be formed between the electrode heads 10 on the ceramic conduit 4. The induced voltage is transmitted to the conversion display 17 through the electrode head 10 and the electrode wire. Then the conversion display 17 converts the voltage into a quantifiable flow rate.

[0035] The working principles and processes described above are all well-known technologies and are common knowledge to those skilled in the art. Those skilled in the art can and should understand their specific functions and structures, so they will not be elaborated on here.

[0036] The flow meter housing 1 is externally connected to a conduit 16, and a conversion display 17 is connected to the top of the conduit 16. The electrode wires are connected to the conversion display 17 in the flow meter housing 1 through the conduit 16. The wiring arrangement and circuit structure of the electrode wires are all conventional means that can be understood and implemented by those skilled in the art based on common sense, which can ensure that the technical solution is fully implemented.

[0037] Furthermore, the switching display 17 is a well-known technology and is currently very mature. Those skilled in the art can and should understand its specific functions and structure, so it will not be elaborated on here.

[0038] When using this utility model:

[0039] First, the electromagnetic flow meter is connected to the flow pipe through the flanges 2 at both ends to install and fix the electromagnetic flow meter. When the electromagnetic flow meter is working, the two coils 15 are energized, which will form a magnetic field between the two coils 15. This magnetic field force causes the negatively charged and positively charged particles in the fluid to separate when passing through the magnetic field. The separation will cause an induced voltage to be formed between the electrode heads 10 on the ceramic conduit 4. The induced voltage is transmitted to the conversion display 17 through the electrode head 10 and the electrode wire. Then the conversion display 17 will convert the voltage into a quantifiable flow rate.

[0040] Secondly, the composite layer 7 is made of carbon fiber composite material. Using carbon fiber composite material as a reinforcing material has the characteristics of being lightweight and having high strength. Therefore, while increasing the strength of the ceramic conduit 4, the thickness of the ceramic conduit 4 can be reduced, thereby reducing the weight of the ceramic conduit 4.

[0041] Then, the composite layer 7 is bonded to the outside of the ceramic conduit 4. Specifically, the groove 6 on the inner side of the composite layer 7 cooperates with the retaining platform 5 on the outer side of the ceramic conduit 4. This improves the strength of the ceramic conduit 4 when bonded to the composite layer 7 and reduces the risk of the ceramic conduit 4 cracking due to its brittleness under axial or tangential forces. Even if the ceramic conduit 4 is damaged during installation and use, the wrapping of the composite layer 7 prevents the flow meter from leaking immediately after the damage, thus improving the safety of the production equipment.

[0042] Finally, by integrally sintering the electrode head 10 with the ceramic conduit 4, specifically by using a gradient sintering process to directly sinter the metal powder of the metal material with the ceramic conduit 4 in one step, the signal lead-out of the electrode head 10 uses a threaded connection of the wiring copper post 11, which makes installation more convenient. This solves the problem that the traditional ceramic conduit electrode head is made by secondary sintering, and the sealing effect is far inferior to that of integral sintering. Furthermore, the problem that the difference in thermal expansion coefficients between the metal and ceramic when sintering the electrode head 10 and then sintering it with the ceramic conduit 4 can easily lead to thermal cracking during the firing process.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An embedded electrode ceramic carbon fiber composite tube, comprising a flowmeter housing (1) and flanges (2) connected to both ends of the flowmeter housing (1), characterized in that: The flow meter housing (1) is internally connected to a lining mechanism (3); The lining mechanism (3) includes a ceramic conduit (4), the outside of which is connected to a composite layer (7), the outer side of which is in contact with the inner side of the flow meter housing (1), the outside of which is connected to a plurality of clamping platforms (5), and the inner side of which is provided with a plurality of clamping slots (6), the outside of which is connected to the inside of which is connected to the inside of which is connected; The ceramic conduit (4) has three electrode holes (9) on its outer side. Each electrode hole (9) is provided with an electrode head (10). The electrode head (10) is sintered in the ceramic conduit (4) and is integrally formed with the ceramic conduit (4).

2. The embedded electrode ceramic carbon fiber composite tube according to claim 1, characterized in that: The outer side of the composite layer (7) has three through holes (8), which correspond to the electrode holes (9) respectively.

3. The embedded electrode ceramic carbon fiber composite tube according to claim 2, characterized in that: A wiring copper post (11) is installed in the through hole (8), and an insulating sleeve (14) is installed between the wiring copper post (11) and the through hole (8).

4. The embedded electrode ceramic carbon fiber composite tube according to claim 3, characterized in that: One end of the copper terminal (11) is threaded to the electrode hole (9) and connected to the electrode head (10). The other end of the copper terminal (11) is provided with a threaded hole (12), and a screw (13) is connected in the threaded hole (12).

5. The embedded electrode ceramic carbon fiber composite tube according to claim 1, characterized in that: Two coils (15) are mounted on the outside of the composite layer (7), and the two coils (15) are symmetrically distributed.

6. The embedded electrode ceramic carbon fiber composite tube according to claim 1, characterized in that: The flow meter housing (1) is externally connected to a conduit (16), and a conversion display (17) is connected to the top of the conduit (16).

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