Double-electrode anti-corrosion capacitance liquid level meter

Abstract

The utility model relates to a double-electrode anti-corrosion capacitance liquid level meter, which belongs to the technical field of capacitance liquid level meters and comprises a stainless steel guide rod, a connecting piece is fixedly mounted at the top of the stainless steel guide rod, and a display gauge outfit is fixedly connected to the top of the connecting piece. The stainless steel guide rod has the advantages that due to the arrangement of the anti-corrosion layer, the stainless steel guide rod has certain anti-corrosion performance, the anti-corrosion layer can be made of epoxy anti-corrosion coating so as to reduce corrosion of highly corrosive liquid to the surface of the stainless steel guide rod, and the anti-corrosion sleeve is arranged on the outer side of the stainless steel guide rod in a sleeved mode so as to prevent corrosion of the stainless steel guide rod. According to the double-electrode capacitance liquid level meter, the strong corrosive liquid and the stainless steel guide rod are blocked, so that the stainless steel guide rod is prevented from being soaked in the strong corrosive liquid for a long time to be corroded, the corrosion resistance of the stainless steel guide rod is further improved, and the service life of the double-electrode capacitance liquid level meter can be prolonged; and the accuracy of the dual-electrode capacitance liquid level meter in the detection process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitance liquid level gauges, in particular to a double-electrode anti-corrosion capacitance liquid level gauge. Background Art

[0002] With the rapid development of social economy, water monitoring is becoming more and more accurate. The water level can be monitored in real time through the dual-electrode capacitance level gauge. The dual-electrode capacitance level gauge is based on the principle that the static pressure of the measured liquid is proportional to the height of the liquid. It is made of advanced isolated diffused silicon sensitive elements or ceramic capacitor pressure sensitive sensors. It converts static pressure into an electrical signal, and then converts it into a standard electrical signal after temperature compensation and linear correction. A sensor for measuring liquid level. The basic structure of the dual-electrode capacitance level gauge includes two electrodes, one is called the measuring electrode and the other is called the reference electrode. The measuring electrode is close to the liquid, and the reference electrode is placed at the top or bottom of the liquid. This structure allows changes in liquid level to be detected by changes in the capacitance value between the electrodes.

[0003] However, during use, the existing dual-electrode capacitance level gauge is immersed in highly corrosive liquids for a long time, causing the guide rod inside the dual-electrode capacitance level gauge to be often corroded by the liquid, thereby reducing the service life of the dual-electrode capacitance level gauge and causing the dual-electrode capacitance level gauge to have inaccurate detection problems.

[0004] Therefore, it does not meet the existing usage requirements, so we propose a dual-electrode anti-corrosion capacitance level meter. Utility Model Content

[0005] In view of the above problems existing in the prior art, the main purpose of the present invention is to provide a dual-electrode corrosion-resistant capacitance level gauge.

[0006] The technical solution of the utility model is as follows: a dual-electrode anti-corrosion capacitance level gauge, comprising a stainless steel guide rod, a connecting piece fixedly installed on the top of the stainless steel guide rod, a display head fixedly connected to the top of the connecting piece, a wiring terminal fixedly connected to the top of the display head, an anti-corrosion layer provided on the outside of the stainless steel guide rod, an anti-corrosion sleeve provided on the outside of the stainless steel guide rod, an external thread provided on the bottom of the stainless steel guide rod, a reference electrode provided on the bottom of the stainless steel guide rod, an internal thread provided inside the reference electrode for use with the external thread, and the bottom of the stainless steel guide rod is threadedly connected to the reference electrode.

[0007] By adopting the above technical solution, the stainless steel guide rod can be made to have a certain degree of corrosion resistance through the setting of the anti-corrosion layer, and the anti-corrosion layer can be an epoxy anti-corrosion coating to reduce the corrosion of the surface of the stainless steel guide rod caused by highly corrosive liquids, and an anti-corrosion sleeve is provided on the outer side of the stainless steel guide rod, which plays an important barrier role between the highly corrosive liquid and the stainless steel guide rod, so as to avoid corrosion caused by the stainless steel guide rod being immersed in the highly corrosive liquid for a long time.

[0008] As a preferred embodiment, both ends of the corrosion-resistant sleeve are provided with sealing mechanisms, and the sealing mechanisms include a sealing groove 2 opened inside the reference electrode and close to one side of the stainless steel guide rod. The bottom of the corrosion-resistant sleeve is fixedly connected with an annular structure sealing ring 2 used in conjunction with the sealing groove 2, and the sealing groove 2 is engaged with the sealing ring 2.

[0009] By adopting the above technical solution, through the coordinated use of sealing groove 2 and sealing ring 2, the sealing performance between the reference electrode and the bottom of the anti-corrosion sleeve can be enhanced, so that highly corrosive liquids from the outside cannot enter the anti-corrosion sleeve and cause corrosion to the stainless steel guide rod.

[0010] As a preferred embodiment, the sealing mechanism also includes a sealing groove 1 opened in the middle of the flange hole and close to one side of the stainless steel guide rod. The top end of the anti-corrosion sleeve is fixedly connected to a sealing ring 1 used in conjunction with the sealing groove 1, and the sealing groove 1 is engaged with the sealing ring 1.

[0011] By adopting the above technical solution, the sealing performance between the top of the anti-corrosion sleeve and the mounting flange can be enhanced through the coordinated use of the sealing groove 1 and the sealing ring 1.

[0012] As a preferred embodiment, a mounting flange is fixedly connected to the outer side of the connecting member, flange holes are equidistantly formed inside the mounting flange, and fixing bolts are provided inside the flange holes.

[0013] By adopting the above technical solution and arranging the mounting flange and the fixing bolts, the dual-electrode capacitance level gauge can be installed in an external installation area.

[0014] As a preferred embodiment, dual-electrode sensors are fixedly mounted at equal intervals on the inner wall of the stainless steel guide rod, and a plurality of the dual-electrode sensors are arranged in opposite directions.

[0015] By adopting the above technical solution and setting up the dual-electrode sensor, the dual-electrode sensor can be activated when the measuring electrode moves.

[0016] As a preferred embodiment, a liquid crystal display is fixedly installed inside the display head, a sealing cover is provided on one side of the display head, a hinge is provided between the sealing cover and the display head, and the sealing cover and the display head are connected by a hinge.

[0017] By adopting the above technical solution and providing the sealing cover, the liquid crystal display screen can be sealed to prevent malfunction caused by moisture.

[0018] As a preferred embodiment, a measuring electrode is slidably provided on the outer side of the corrosion-resistant sleeve, and a visual window is provided inside the sealing cover.

[0019] By adopting the above technical solution, the display result of the liquid crystal display screen can be observed through the visual window.

[0020] As a preferred embodiment, a processor is provided inside the display head, a battery is provided inside the display head, a central control room is provided outside the stainless steel guide rod, and the LCD screen, dual-electrode sensor, battery, and processor are all electrically connected to the central control room.

[0021] By adopting the above technical solution, the measuring electrode will move with the change of liquid level, and the liquid will enter the space between the two electrodes as a medium. Since the dielectric constant of the liquid is usually greater than that of air, the rising liquid level will cause the capacitance value to increase, and vice versa. By measuring the change in this capacitance value, the height of the liquid level can be accurately reflected.

[0022] Compared with the prior art, the advantages and positive effects of the present invention are:

[0023] 1. In the present invention, the stainless steel guide rod is provided with a certain degree of corrosion resistance by providing an anti-corrosion layer, and the anti-corrosion layer can be an epoxy anti-corrosion coating to reduce the corrosion of the surface of the stainless steel guide rod caused by highly corrosive liquids, and an anti-corrosion sleeve is provided on the outer side of the stainless steel guide rod, which plays an important barrier role between the highly corrosive liquid and the stainless steel guide rod, so as to avoid the corrosion caused by the stainless steel guide rod being immersed in the highly corrosive liquid for a long time, further improving the corrosion resistance of the stainless steel guide rod, thereby increasing the service life of the dual-electrode capacitance level gauge and ensuring the accuracy of the dual-electrode capacitance level gauge during the detection process.

[0024] 2. This dual-electrode capacitance level gauge is suitable for a variety of liquids, powders, and granules, including corrosive and high-temperature liquids. Its design can be adjusted to suit different operating conditions to meet the measurement requirements of different media. Furthermore, through programming, the dual-electrode capacitance level gauge can be flexibly adjusted and configured, allowing users to set parameters according to their needs to meet the requirements of specific working conditions. This programmability makes the dual-electrode capacitance level gauge more adaptable to various application scenarios.

[0025] 3. In the present invention, the reference electrode is bolted to the bottom of the stainless steel guide rod. As the reference electrode is continuously tightened outside the stainless steel guide rod, the anti-corrosion sleeve outside the stainless steel guide rod is pushed to be continuously pressed against the mounting flange, making the anti-corrosion sleeve tighter during the connection process. At the same time, the sealing performance between the reference electrode and the bottom of the anti-corrosion sleeve can be enhanced by the coordinated use of the sealing groove 2 and the sealing ring 2, so that the strong corrosive liquid from the outside cannot enter the anti-corrosion sleeve and cause corrosion to the stainless steel guide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional diagram of a dual-electrode anti-corrosion capacitance level gauge is provided for the utility model;

[0027] Figure 2 The utility model provides a disassembly diagram of a dual-electrode anti-corrosion capacitance level gauge;

[0028] Figure 3 The utility model provides a schematic diagram of the internal structure of a dual-electrode anti-corrosion capacitance level gauge;

[0029] Figure 4 The utility model provides a double-electrode anti-corrosion capacitance level gauge Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 The utility model provides a double-electrode anti-corrosion capacitance level gauge Figure 3 Enlarged view of point B in the middle.

[0031] Legend: 1. Stainless steel guide rod; 2. Measuring electrode; 3. Mounting flange; 4. Flange hole; 5. Connector; 6. Display head; 7. Sealing cover; 8. Terminal block; 9. Reference electrode; 10. External thread; 11. Internal thread; 12. Anti-corrosion sleeve; 13. Anti-corrosion layer; 14. LCD display; 15. Dual-electrode sensor; 16. Sealing groove 1; 17. Sealing ring 1; 18. Sealing groove 2; 19. Sealing ring 2. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0033] Reference Figure 1-5, a dual-electrode anti-corrosion capacitance level gauge, comprising a stainless steel guide rod 1, a connector 5 is fixedly installed on the top of the stainless steel guide rod 1, a display head 6 is fixedly connected to the top of the connector 5, a terminal 8 is fixedly connected to the top of the display head 6, an anti-corrosion layer 13 is provided on the outside of the stainless steel guide rod 1, an anti-corrosion sleeve 12 is provided on the outside of the stainless steel guide rod 1, an external thread 10 is provided on the bottom of the stainless steel guide rod 1, a reference electrode 9 is provided on the bottom of the stainless steel guide rod 1, an internal thread 11 is provided inside the reference electrode 9 for use with the external thread 10, the bottom of the stainless steel guide rod 1 is threadedly connected to the reference electrode 9, and the setting of the anti-corrosion layer 13 can make the stainless steel guide rod 1 have a certain degree of corrosion resistance, and the anti-corrosion layer 13 It can be an epoxy anti-corrosion paint to reduce the corrosion of the surface of the stainless steel guide rod 1 caused by highly corrosive liquids, and an anti-corrosion sleeve 12 is provided on the outside of the stainless steel guide rod 1, which plays an important barrier role between the highly corrosive liquid and the stainless steel guide rod 1, so as to avoid the stainless steel guide rod 1 being immersed in highly corrosive liquids for a long time and causing corrosion, further improving the anti-corrosion performance of the stainless steel guide rod 1, and thus being able to increase the service life of the dual-electrode capacitance level gauge, ensuring the accuracy of the dual-electrode capacitance level gauge during the detection process, and the dual-electrode capacitance level gauge is suitable for various liquids, powders and particles, including corrosive liquids and high-temperature liquids. Its design can be adjusted according to different working conditions to adapt to the measurement requirements of different media.

[0034] Reference Figure 5 , both ends of the anti-corrosion sleeve 12 are provided with sealing mechanisms, which include a sealing groove 2 18 opened inside the reference electrode 9 and close to one side of the stainless steel guide rod 1, and the bottom of the anti-corrosion sleeve 12 is fixedly connected with an annular structure sealing ring 2 19 used in conjunction with the sealing groove 2 18. The sealing groove 2 18 is engaged with the sealing ring 2 19, and is set by the reference electrode 9 and the bottom bolt of the stainless steel guide rod 1. As the reference electrode 9 is continuously tightened outside the stainless steel guide rod 1, the anti-corrosion sleeve 12 outside the stainless steel guide rod 1 will be pushed to be continuously pressed against the mounting flange 3, making the anti-corrosion sleeve 12 tighter during the connection process. At the same time, through the use of the sealing groove 2 18 and the sealing ring 2 19, the sealing performance of the reference electrode 9 and the bottom of the anti-corrosion sleeve 12 can be enhanced, so that the external highly corrosive liquid cannot enter the anti-corrosion sleeve 12 and cause corrosion to the stainless steel guide rod 1.

[0035] Reference Figure 4The sealing mechanism also includes a sealing groove 16 opened in the middle of the flange hole 4 and close to one side of the stainless steel guide rod 1. The top of the anti-corrosion sleeve 12 is fixedly connected to a sealing ring 17 used in conjunction with the sealing groove 16. The sealing groove 16 and the sealing ring 17 are engaged with each other. The sealing groove 16 and the sealing ring 17 are engaged with each other. The use of the sealing groove 16 and the sealing ring 17 can enhance the sealing performance between the top of the anti-corrosion sleeve 12 and the mounting flange 3, thereby preventing the inflow of highly corrosive liquids from the outside from the gap between the two.

[0036] Reference Figure 4 The outside of the connecting piece 5 is fixedly connected with a mounting flange 3, and flange holes 4 are equidistantly provided inside the mounting flange 3. Fixing bolts are provided inside the flange holes 4. By setting the mounting flange 3 and the fixing bolts, the dual-electrode capacitance level gauge can be installed in the external installation area. The use of the mounting flange 3 makes it convenient for the staff to install and disassemble, and also makes the dual-electrode capacitance level gauge more stable when used.

[0037] Reference Figure 3 The inner wall of the stainless steel guide rod 1 is fixedly installed with dual-electrode sensors 15 at equal intervals. Multiple dual-electrode sensors 15 are arranged opposite to each other. Through the setting of the dual-electrode sensors 15, the dual-electrode sensors 15 can be activated when the measuring electrode 2 moves.

[0038] Reference Figure 2 A liquid crystal display screen 14 is fixedly installed inside the display head 6, and a sealing cover 7 is provided on one side of the display head 6. A hinge is provided between the sealing cover 7 and the display head 6. The sealing cover 7 and the display head 6 are connected by a hinge. Through the setting of the liquid crystal display screen 14, the detection status of the dual-electrode capacitance level gauge can be displayed through the liquid crystal display screen 14, and the setting of the liquid crystal display screen 14 can display the detection results at night, and through the setting of the sealing cover 7, the liquid crystal display screen 14 can be sealed to prevent malfunction due to moisture.

[0039] Reference Figure 2 The outer side of the anti-corrosion sleeve 12 is slidably provided with a measuring electrode 2, and the interior of the sealing cover 7 is provided with a visual window. Through the setting of the visual window, the display result of the liquid crystal display screen 14 can be observed through the visual window.

[0040] Reference Figure 1A processor is provided inside the display head 6, a battery is provided inside the display head 6, a central control room is provided on the outside of the stainless steel guide rod 1, the LCD screen 14, the dual-electrode sensor 15, the battery, and the processor are all electrically connected to the central control room. When in use, the measuring electrode 2 will move with the change of the liquid level, and the liquid will enter between the two electrodes as a medium. Since the dielectric constant of the liquid is usually greater than that of the air, the rise in the liquid level will cause the capacitance value to increase, and vice versa. By measuring the change in this capacitance value, the height of the liquid level can be accurately reflected, and the dual-electrode sensor 15 will transmit it to the processor in the display head 6 in the form of an electrical signal, and the LCD screen 14 will display the value and transmit the signal to the central control room to achieve remote monitoring and control.

[0041] Working principle: First, when the dual-electrode capacitance level gauge is installed in a container, the reference electrode 9 will be placed at the bottom of the liquid, and the measuring electrode 2 will move with the change of the liquid level. The liquid will enter between the two electrodes as a medium. Since the dielectric constant of the liquid is usually greater than that of the air, the rise in the liquid level will cause the capacitance value to increase, and vice versa. By measuring the change in this capacitance value, the height of the liquid level can be accurately reflected, and the dual-electrode sensor 15 will transmit it to the processor in the display head 6 in the form of an electrical signal, and the LCD 14 will display the value and transmit the signal to the central control room to achieve remote monitoring and control. By setting the anti-corrosion layer 13, the stainless steel guide rod 1 can have a certain degree of corrosion resistance, and the anti-corrosion layer 13 can be an epoxy anti-corrosion coating to reduce the corrosion of the surface of the stainless steel guide rod 1 caused by highly corrosive liquids, and an anti-corrosion sleeve 12 is provided on the outer side of the stainless steel guide rod 1, which plays an important barrier role between the highly corrosive liquid and the stainless steel guide rod 1 to avoid corrosion caused by the stainless steel guide rod 1 being immersed in highly corrosive liquids for a long time, thereby further improving the corrosion resistance of the stainless steel guide rod 1.

[0042] By setting the reference electrode 9 and the bottom bolts of the stainless steel guide rod 1, as the reference electrode 9 is continuously tightened outside the stainless steel guide rod 1, the anti-corrosion sleeve 12 outside the stainless steel guide rod 1 will be pushed to be continuously pressed against the mounting flange 3, and the cooperation of the sealing groove 16 and the sealing ring 17 can enhance the sealing performance between the top of the anti-corrosion sleeve 12 and the mounting flange 3, and prevent the external highly corrosive liquid from flowing into the gap between the two, making the anti-corrosion sleeve 12 tighter during the connection process. At the same time, by the cooperation of the sealing groove 2 18 and the sealing ring 2 19, the sealing performance of the reference electrode 9 and the bottom of the anti-corrosion sleeve 12 can be enhanced, so that the external highly corrosive liquid cannot enter the anti-corrosion sleeve 12 and cause corrosion to the stainless steel guide rod 1. The setting of the LCD screen 14 can display the test results at night, and the setting of the sealing cover 7 can seal the LCD screen 14 to prevent malfunction due to moisture.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the internal parts of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0044] The above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A two-electrode, corrosion-resistant capacitance level gauge comprising a stainless steel guide rod (1), characterized in that: A connecting piece (5) is fixedly installed on the top of the stainless steel guide rod (1), a display meter (6) is fixedly connected to the top of the connecting piece (5), a wiring terminal (8) is fixedly connected to the top of the display meter (6), an anti-corrosion layer (13) is provided on the outside of the stainless steel guide rod (1), an anti-corrosion sleeve (12) is sleeved on the outside of the stainless steel guide rod (1), an external thread (10) is provided on the bottom of the stainless steel guide rod (1), a reference electrode (9) is provided on the bottom of the stainless steel guide rod (1), an internal thread (11) used in conjunction with the external thread (10) is provided inside the reference electrode (9), and the bottom of the stainless steel guide rod (1) is threadedly connected to the reference electrode (9).

2. The dual-electrode anti-corrosion capacitance level gauge according to claim 1, characterized in that: Both ends of the anti-corrosion sleeve (12) are provided with sealing mechanisms, and the sealing mechanisms include a second sealing groove (18) opened inside the reference electrode (9) and close to one side of the stainless steel guide rod (1). The bottom of the anti-corrosion sleeve (12) is fixedly connected with a second annular sealing ring (19) used in conjunction with the second sealing groove (18), and the second sealing groove (18) is engaged with the second sealing ring (19).

3. The dual-electrode anti-corrosion capacitance level gauge according to claim 2, characterized in that: The sealing mechanism further comprises a sealing groove (16) provided in the middle of the flange hole (4) and close to one side of the stainless steel guide rod (1); a sealing ring (17) is fixedly connected to the top end of the corrosion-resistant sleeve (12) and is used in conjunction with the sealing groove (16); the sealing groove (16) and the sealing ring (17) are engaged with each other.

4. The dual-electrode anti-corrosion capacitance level gauge according to claim 1, characterized in that: The outer side of the connecting member (5) is fixedly connected to a mounting flange (3), the interior of the mounting flange (3) is provided with flange holes (4) at equal intervals, and the interiors of the flange holes (4) are all provided with fixing bolts.

5. The dual-electrode anti-corrosion capacitance level gauge according to claim 1, characterized in that: Dual-electrode sensors (15) are fixedly mounted on the inner wall of the stainless steel guide rod (1) at equal intervals, and a plurality of the dual-electrode sensors (15) are arranged in opposite directions.

6. The dual-electrode anti-corrosion capacitance level gauge according to claim 1, characterized in that: A liquid crystal display screen (14) is fixedly installed inside the display head (6), a sealing cover (7) is provided on one side of the display head (6), a hinge is provided between the sealing cover (7) and the display head (6), and the sealing cover (7) and the display head (6) are connected via the hinge.

7. The dual-electrode anti-corrosion capacitance level gauge according to claim 6, characterized in that: A measuring electrode (2) is slidably provided on the outer side of the anti-corrosion sleeve (12), and a visual window is provided inside the sealing cover (7).

8. The dual-electrode anti-corrosion capacitance level gauge according to claim 7, characterized in that: A processor is provided inside the display meter (6), a battery is provided inside the display meter (6), a central control room is provided outside the stainless steel guide rod (1), and the liquid crystal display (14), the dual-electrode sensor (15), the battery, and the processor are all electrically connected to the central control room.

Images