Pipeline type conductivity sensor

Abstract

The utility model discloses a pipeline type conductivity sensor, which comprises a coil assembly and a shell, the coil assembly comprises a pipeline type framework, a driving part and an induction part, and the driving part and the induction part are arranged on the pipeline type framework and are arranged at an interval along the flowing direction of a liquid medium; the outer shell is arranged on the periphery of the pipeline type framework in a sleeving mode, and the outer shell and the liquid medium flowing through the pipeline type framework form a conductive loop. The utility model discloses a pipeline type conductivity sensor, which is characterized in that a driving part and a sensing part are arranged in a pipeline type framework at an interval, a liquid medium flowing through the pipeline type framework and a shell form a conductive loop, the conductivity of the liquid medium is further measured, and a bypass measurement or a measurement pool is not required to be mounted when the pipeline type conductivity sensor is used; other parts of the sensor do not need to be in contact with a liquid medium, installation is simple and reliable, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of sensors, and in particular to a pipeline conductivity sensor. Background Technology

[0002] Conductivity sensor technology is a very important field of engineering research. It is used to measure the conductivity of liquids and is widely used in human production and life. It has become an indispensable detection and monitoring device in industrial production and technology development such as chemical industry, semiconductor industry, power and environmental protection.

[0003] Common conductivity sensors are mainly divided into contact and non-contact conductivity sensors. Contact conductivity sensors have electrodes in direct contact with the solution; an electrical signal is applied between the electrodes, and conductivity is measured by measuring the magnitude of the signal. Non-contact conductivity sensors use electromagnetic induction to measure conductivity. Currently, regardless of the type, all conductivity sensors on the market require the sensor to be immersed in the liquid being measured. This method places requirements on the sensor's installation location, sometimes necessitating the installation of a bypass measurement or sensor measurement cell, increasing manufacturing costs and the complexity of sensor installation. Furthermore, prolonged immersion in corrosive liquids severely impacts the sensor's lifespan.

[0004] Therefore, there is an urgent need to develop a pipeline conductivity sensor that has high measurement accuracy, is easy to install, and does not require the installation of a bypass measurement or measurement cell. The pipeline conductivity sensor does not need to come into contact with corrosive measurement media, thus further improving its service life. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a pipeline conductivity sensor with high measurement accuracy, simple installation, and no need to install bypass measurement or measurement cell. The pipeline conductivity sensor does not need to contact corrosive measurement media, thus further improving its service life.

[0006] This utility model discloses a pipeline conductivity sensor, characterized in that: it includes a coil assembly and a housing, the coil assembly includes a pipeline frame, a driving component and a sensing component, the driving component and the sensing component are disposed on the pipeline frame and spaced apart along the flow direction of the liquid medium; the housing is fitted around the outer periphery of the pipeline frame and forms a conductive circuit with the liquid medium flowing through the pipeline frame.

[0007] Furthermore, the pipe-type frame is provided with mounting holes and connecting parts connected to the mounting holes on both sides, and the driving component and sensing component are respectively disposed in the mounting holes, so that the driving component and sensing component are disposed on both sides of the mounting part.

[0008] Furthermore, it also includes a pipe assembly comprising an inlet pipe and an outlet pipe. The inlet pipe extends into the drive component and abuts against the edge of one side of the connecting portion of the pipe frame. The outlet pipe extends into the sensing component and abuts against the edge of the other side of the connecting portion of the pipe frame. The connecting portion is provided with a through hole for connecting the inlet pipe and the outlet pipe, thereby forming a channel for the liquid medium to flow through the pipe frame.

[0009] Furthermore, the coil assembly also includes end cap I and end cap II. End cap I is fitted over the inflow pipe and fixed to one side of the tubular frame, and end cap II is fitted over the outflow pipe and fixed to the other side of the tubular frame, for fixing the driving component and the sensing component inside the tubular frame.

[0010] Furthermore, the outer casing includes outer casing I and outer casing II, and after installation, outer casing I and outer casing II are provided with cavities for mounting the coil assembly, so that outer casing I and outer casing II are fitted over the outer periphery of the coil assembly.

[0011] Furthermore, the coil assembly also includes a signal input terminal and a signal output terminal. The signal input terminal is disposed on the driving component, and the signal output terminal is disposed on the sensing component. The pipe-type frame and the outer shell I are respectively provided with signal input holes and signal output holes spaced apart along the flow direction of the liquid medium. The signal input terminal and the signal output terminal extend out of the signal input holes and signal output holes respectively, for signal input of the driving component and signal output of the sensing component.

[0012] Furthermore, it also includes a temperature sensor. The tubular frame and housing I are provided with a temperature mounting hole for installing the temperature sensor. One side of the temperature sensor extends out of the tubular frame and housing I. The temperature sensor is installed in the temperature mounting hole and positioned between the signal input end and the signal output end.

[0013] Furthermore, it also includes a sensor junction box, which includes a junction box body, which is a hollow cavity inside. The signal input terminal, temperature sensor and signal output terminal are installed inside the cavity after extending out of the outer shell I.

[0014] Furthermore, the sensor junction box also includes a junction cover, which is installed on the end of the junction box body away from the outer casing I, so that the junction cover forms a closed junction box cavity after being placed on the junction box body.

[0015] Furthermore, flange I and flange II are respectively provided at the two ends of the inflow pipe and the outflow pipe away from the pipe frame. Flange I and flange II are used to connect with external pipes and form channels for communication of liquid media.

[0016] The beneficial effects of this utility model are as follows: This utility model discloses a pipeline conductivity sensor. A coil assembly is arranged on the outer periphery of the liquid medium in the flow direction. By inputting an AC signal of a certain frequency and amplitude to the driving component, an alternating magnetic field is formed on the driving component when the liquid medium flows. The magnetic flux changes, causing an induced electromotive force and alternating eddy currents in the liquid medium. An induced current is formed along the direction of the outer shell, forming a conductive circuit. The conductivity of the liquid medium flowing through the sensor is further measured through the signal output of the sensing component. This invention eliminates the need to place the sensor in the liquid medium for measurement and eliminates the need for bypass measurement or a measuring cell. It offers high measurement accuracy, simple installation, and the conductivity can be detected simply by the normal flow of the liquid medium. Furthermore, corrosive liquid media do not need to come into contact with other parts of the sensor, thus improving the product's service life. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the liquid medium flow direction and conductive circuit of this utility model.

[0021] Reference numerals: 1. Inflow pipe, 101. Flange I, 101. End cap I, 2. Drive coil, 301. Drive core, 302. Signal input terminal, 303. Induction coil, 304. Induction core, 305. Signal output terminal, 306. Pipe frame, 307. Housing I, 4. Junction box body, 401. Junction cover, 402. Housing II, 5. End cap II, 6. Outflow pipe, 7. Flange II, 701. Temperature sensor, 8. Liquid medium, 9. Conductive circuit, 10. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-3 The present invention will be further described below.

[0023] This embodiment discloses a pipe-type conductivity sensor, including a coil assembly and a housing I4. The coil assembly includes a pipe-type frame 307, a driving component, and a sensing component. The driving component and the sensing component are disposed on the pipe-type frame 307 and spaced apart along the flow direction of the liquid medium 9. The housing I4 is fitted around the outer periphery of the pipe-type frame 307 and forms a conductive circuit 10 with the liquid medium 9 flowing through the pipe-type frame 307. As shown in the figure, the driving component includes a driving magnetic core 302 and a driving coil 301, and the sensing component includes a sensing magnetic core 305 and a sensing coil 304. The driving component and the sensing component are existing technologies and will not be described in detail here. For example, by adding spacers between the pipe-type frames 307, the driving component and the sensing component can be disposed on the pipe-type frame 307 and spaced apart along the flow direction of the liquid medium 9. The pipe-type frame 307 is made of an insulating, corrosion-resistant, and high-strength material, which can effectively prevent current leakage in the conductive circuit 10 and protect it from damage. Corrosion resistance can extend its service life and ensure long-term stable operation in harsh environments. Meanwhile, the outer shell I4 is fitted around the periphery of the pipe-type frame 307. The material of the outer shell I4 is a conductive metal anti-oxidation material. Through the conductive properties of the material of the outer shell I4, and by utilizing Faraday's law of electromagnetic induction, the liquid medium 9 flowing through the pipe-type frame 307 can be further made to form a conductive circuit 10 as shown in the figure. This can be achieved by setting a pipe for the liquid medium 9 to flow through inside the pipe-type frame 307, which will not be elaborated here.

[0024] In this embodiment, mounting holes and connecting portions connected to the mounting holes are respectively provided on both sides of the pipe-type frame 307. The driving component and the sensing component are respectively disposed in the mounting holes, so that the driving component and the sensing component are disposed on both sides of the mounting portion. By providing mounting holes in the pipe-type frame 307, the arrangement space is effectively reduced, making the overall structure compact, ensuring the stability of the structure, and allowing the driving component and the sensing component to be spaced apart.

[0025] This embodiment also includes a pipe assembly comprising an inlet pipe 1 and an outlet pipe 7. The inlet pipe 1 extends into the driving component and abuts against one edge of the connecting portion of the pipe frame 307. The outlet pipe 7 extends into the sensing component and abuts against the other edge of the connecting portion of the pipe frame 307. The connecting portion has a through hole for connecting the inlet pipe 1 and the outlet pipe 7, thus forming a channel for the liquid medium 9 to flow through the pipe frame 307. The end faces of the inlet pipe 1 and the outlet pipe 7 abut against both sides of the connecting portion. For example, sealing the connection point can be achieved by using sealant on the end faces of the inlet pipe 1 and the outlet pipe 7, thereby ensuring that the liquid medium 9 does not leak. According to the actual working conditions and performance requirements, both the inlet pipe 1 and the outlet pipe 7 are made of conductive metal corrosion-resistant material. The conductive metal corrosion-resistant material not only has good conductivity but also high corrosion resistance to withstand the pressure inside the pipe assembly and the erosion caused by the liquid medium 9. The conductive metal corrosion-resistant material is existing technology and will not be described in detail here.

[0026] In this embodiment, the coil assembly further includes end cap I2 and end cap II6. End cap I2 is fitted over the inflow pipe and fixed to one side of the tubular frame 307, and end cap II6 is fitted over the outflow pipe 7 and fixed to the other side of the tubular frame 307, for fixing the driving component and the sensing component inside the tubular frame 307. As shown in the figure, the two ends of the tubular frame 307 have annular bosses protruding outwards. End caps I2 and II6 are respectively provided with grooves that conform to the annular bosses. When end cap I2 is fitted over the inflow pipe 1 and end cap II6 is fitted over the outflow pipe 7, the grooves of end caps I2 and II6 can be quickly installed on the annular bosses of the tubular frame 307, so that the driving component and the sensing component are fixed inside the tubular frame 307. This step-by-step installation method makes the installation process more convenient and improves the assembly efficiency.

[0027] In this embodiment, the outer casing includes outer casing I4 and outer casing II5. After installation, outer casing I4 and outer casing II5 have cavities for mounting the coil assembly, allowing them to fit over the outer periphery of the coil assembly. The cavity refers to the hollow space formed inside outer casing I4 and outer casing II5 after installation, used to fix the coil assembly. As shown in the figure, the contact surfaces of outer casing I4 and outer casing II5 have mutually cooperating concave-convex structures, ensuring convenient installation while increasing the contact area. The structure is simple, and opposing connecting plates are provided on the left and right sides of outer casing I4 and outer casing II5 along the outer edge of the pipe assembly. Connecting holes are provided on the connecting plates, allowing for a tight connection between outer casing I4 and outer casing II5 by bolts passing through the connecting holes and connecting with nuts. The bolt and nut connection structure is existing and will not be described further. Both outer casing I4 and outer casing II5 are made of the conductive metal anti-oxidation material described above. The outer casing of this solution can adopt various shapes, such as cylindrical, rectangular, or other shapes, to adapt to different installation environments and space requirements, which will not be elaborated further here.

[0028] In this embodiment, the coil assembly further includes a signal input terminal 303 and a signal output terminal 306. The signal input terminal 303 is disposed on the driving component, and the signal output terminal 306 is disposed on the sensing component. The pipe-type frame 307 and the outer shell I4 are respectively provided with signal input holes and signal output holes spaced apart along the flow direction of the liquid medium 9. The signal input terminal 303 and the signal output terminal 306 extend out of the signal input hole and signal output hole respectively, for signal input of the driving component and signal output of the sensing component. Signal input refers to the external AC signal being connected to the signal input terminal 303 to input an AC signal of a certain frequency and amplitude to the driving coil 301. Using Faraday's law of electromagnetic induction as described above, an alternating magnetic field is formed on the driving magnetic core 302, and the magnetic flux changes, causing the flowing liquid medium 9 to generate an induced electromotive force and alternating eddy currents. Signal output refers to the output of the current generated by the induction coil 304 on the induction magnetic core 305 through the signal output terminal 306, for signal output.

[0029] In this embodiment, a temperature sensor 8 is also included. The pipe-type frame 307 and the outer shell I4 are provided with a temperature mounting hole for installing the temperature sensor 8. One side of the temperature sensor extends out of the pipe-type frame 307 and the outer shell I4. The temperature sensor 8 is installed in the temperature mounting hole and is positioned between the signal input terminal 303 and the signal output terminal 306. As shown in the figure, after the temperature sensor 8 is installed in the temperature mounting hole, one side of the temperature sensor 8 extends into the channel through which the liquid medium 9 flows to ensure its sealing. The temperature sensor 8 is used to detect the temperature of the liquid medium 9 flowing through it for temperature compensation, which will not be described in detail here.

[0030] In this embodiment, a sensor junction box is also included. The sensor junction box includes a junction box body 401, which is a hollow cavity. The signal input terminal 303, the temperature sensor 8, and the signal output terminal 306 are arranged in the cavity after extending out of the outer shell I4. As shown in the figure, the junction box body 401 is elongated, and the hollow cavity is arranged along the length of the elongated shape to facilitate the connection of the signal input terminal 303, the temperature sensor 8, and the signal output terminal 306 to the external device after extending out of the outer shell I4.

[0031] In this embodiment, the sensor junction box further includes a junction cover 402. The junction cover 402 is installed at the end of the junction box body 401 away from the outer shell I4, so that the junction cover 402 forms a closed junction box cavity after being disposed on the junction box body 401. As shown in the figure, the cavity refers to the junction cover 402 used to cover the junction box body 401 to form a closed junction box cavity, which will not be described in detail here.

[0032] In this embodiment, flanges I101 and II701 are respectively provided at the ends of the inflow pipe 1 and the outflow pipe 7 away from the pipe frame 307. Flanges I101 and II701 are used to connect with external pipes and form channels for the liquid medium 9 to flow. As shown in the figure, flanges I101 and II701 are respectively sleeved on the end faces of the inflow pipe 1 and the outflow pipe 7, which can be achieved by welding, for example, which will not be described in detail here. Flanges I101 and II701 are circular and have multiple fixing holes along the circumference of the center line. This structure is used at the docking end of the external pipe. By using bolts and nuts, flanges I101 and II701 can be fixed in the inlet and outlet directions of the external pipe, respectively, so as to form a complete flow of liquid medium 9, ensuring that the sensor is easy, quick and stable to install, which will not be described in detail here.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A pipe-type conductivity sensor, characterized in that: It includes a coil assembly and a housing. The coil assembly includes a pipe frame (307), a driving component and a sensing component. The driving component and the sensing component are disposed on the pipe frame (307) and spaced apart along the flow direction of the liquid medium (9). The outer shell is fitted around the periphery of the tubular frame (307) and forms a conductive circuit (10) with the liquid medium (9) flowing through the tubular frame (307).

2. The pipeline conductivity sensor according to claim 1, characterized in that: The pipe-type frame (307) has mounting holes and connecting parts connected to the mounting holes on both sides. The driving component and the sensing component are respectively disposed in the mounting holes, so that the driving component and the sensing component are disposed on both sides of the mounting part.

3. The pipeline conductivity sensor according to claim 2, characterized in that: It also includes a pipe assembly comprising an inlet pipe (1) and an outlet pipe (7). The inlet pipe (1) extends into the drive component and abuts against the edge of the connecting portion of the pipe frame (307). The outlet pipe (7) extends into the sensing component and abuts against the edge of the connecting portion of the pipe frame (307). The connecting portion is provided with a through hole for connecting the inlet pipe (1) and the outlet pipe (7) and forming a channel for the liquid medium (9) to flow through the pipe frame (307).

4. The pipeline conductivity sensor according to claim 1, characterized in that: The coil assembly also includes end cap I (2) and end cap II (6). End cap I (2) is fitted over the inflow pipe (1) and fixed to one side of the pipe frame (307). End cap II (6) is fitted over the outflow pipe (7) and fixed to the other side of the pipe frame (307), for fixing the driving component and the sensing component inside the pipe frame (307).

5. The pipeline conductivity sensor according to claim 1, characterized in that: The outer casing includes outer casing I (4) and outer casing II (5). After installation, outer casing I (4) and outer casing II (5) are provided with cavities for mounting the coil assembly, so that outer casing I (4) and outer casing II (5) are fitted over the outer periphery of the coil assembly.

6. The pipeline conductivity sensor according to claim 5, characterized in that: The coil assembly further includes a signal input terminal (303) and a signal output terminal (306). The signal input terminal (303) is disposed on the driving component, and the signal output terminal (306) is disposed on the sensing component. The pipe-type frame (307) and the outer shell I (4) are respectively provided with signal input holes and signal output holes spaced apart along the flow direction of the liquid medium (9). The signal input terminal (303) and the signal output terminal (306) extend out of the signal input hole and the signal output hole respectively, for signal input of the driving component and signal output of the sensing component.

7. The pipeline conductivity sensor according to claim 6, characterized in that: It also includes a temperature sensor (8), and the tubular frame (307) and housing I (4) are provided with a temperature mounting hole for mounting the temperature sensor (8). One side of the temperature sensor extends out of the tubular frame (307) and housing I (4). The temperature sensor (8) is mounted in the temperature mounting hole and is located between the signal input terminal (303) and the signal output terminal (306).

8. The pipeline conductivity sensor according to claim 7, characterized in that: It also includes a sensor junction box, which includes a junction box body (401). The junction box body (401) is a hollow cavity. The signal input terminal (303), temperature sensor (8) and signal output terminal (306) are located in the cavity after extending out of the outer shell I (4).

9. The pipeline conductivity sensor according to claim 8, characterized in that: The sensor junction box also includes a junction cover (402), which is installed on the end of the junction box body (401) away from the outer shell I (4), so that the junction cover (402) forms a closed junction box cavity after being placed on the junction box body (401).

10. The pipeline conductivity sensor according to claim 3, characterized in that: The inflow pipe (1) and the outflow pipe (7) are respectively provided with flange I (101) and flange II (701) at the two ends away from the pipe frame (307). The flange I (101) and flange II (701) are respectively used to connect with external pipes and form channels for communication of liquid medium (9).

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