Admittance level meter electrode structure

Abstract

The utility model relates to the technical field of level meters, in particular to an admittance level meter electrode structure which comprises a shell, a connecting piece is arranged at the bottom of the shell, a connecting electrode is arranged at the bottom of the connecting piece, a rod type measuring electrode is integrally formed at the bottom end of the connecting electrode, a protective tube is arranged on the outer wall of the connecting electrode, and a detachable cleaning piece is arranged on the outer wall of the protective tube. The cleaning part comprises an annular base arranged on the outer wall of the protection pipe in a sleeving mode, two fixing shells are detachably connected to the bottom of the annular base, electric telescopic rods are arranged in the two fixing shells, movable rods of the two electric telescopic rods are connected with connecting rods, the two connecting rods are jointly connected with a movable ring, and a rubber lining is arranged on the inner wall of the movable ring. According to the admittance level meter electrode structure, the cleaning mechanism is arranged on the outer side of the rod type measuring electrode, materials attached to the electrode can be automatically removed, the problem that the materials are attached to the surface of the electrode is effectively solved, and the accuracy of admittance measurement is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of level gauge technology, specifically to the electrode structure of an admittance level gauge. Background Technology

[0002] Admittance level gauges are widely used instruments in industrial production to measure the level of liquids, granular solids, or slurries in containers such as tanks and silos. Their function is based on the admittance principle, where admittance is a complex parameter in AC circuits used to describe a material's ability to conduct current, composed of conductivity and reactance. By measuring the change in admittance at the electrodes, the height of the object inside the container can be estimated.

[0003] The core working principle of an admittance level gauge is to establish an electric field between the measuring electrode and the container wall. When the material height inside the container changes, the dielectric constant and conductivity of the medium between the measuring electrode and the container wall also change, resulting in a change in the admittance value. The measuring device converts these changes into an electrical signal, ultimately outputting a level indication. This characteristic makes admittance level gauges suitable for various complex operating conditions, such as measuring materials in environments with high dust, corrosiveness, or high temperature and pressure.

[0004] However, in practical applications, the measurement accuracy of admittance level gauges may be affected by the adhesion of materials on the electrode surface. This problem is particularly prominent when measuring high-viscosity liquids, slurries, or media with charge characteristics. The presence of deposits on the electrode surface changes the original electrical characteristics, which may lead to measurement signal deviation or even false alarms. The essence of this phenomenon is that the adhering materials increase the equivalent capacitance or conductivity of the electrode, thereby distorting the admittance measurement. In view of this, we propose an electrode structure for admittance level gauges. Utility Model Content

[0005] The purpose of this invention is to provide an admittance level gauge electrode structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The admittance level gauge electrode structure includes a housing, inside which is a circuit board and related components of the admittance level gauge, which is existing technology and will not be described in detail here. The top of the housing is provided with a cover, the outer wall of the housing is provided with an inlet pipe, the bottom of the housing is provided with a connector, the bottom of the connector is provided with a connecting electrode, the bottom end of the connecting electrode is integrally formed with a rod-type measuring electrode, the outer wall of the connecting electrode is provided with a protective tube, the outer diameter of the connecting electrode is smaller than the outer diameter of the rod-type measuring electrode, and the outer diameter of the protective tube is larger than the outer diameter of the rod-type measuring electrode;

[0008] The outer wall of the protective tube is equipped with a detachable cleaning component, which includes an annular seat fitted onto the outer wall of the protective tube. A fixing ring is located at the bottom of the annular seat. Two first bolts are threaded onto the outer wall of the fixing ring. The fixing ring and the annular seat are fixed to the outer wall of the protective tube. Fixed housings are detachably connected to the bottom of the annular seat near both ends. Each of the two fixed housings contains an electric telescopic rod. The electric telescopic rod shares a power supply with the admittance level gauge but is controlled independently. The movable rod of the electric telescopic rod penetrates the bottom of the inner wall of the fixed housing to the outside. Both movable rods are connected to connecting rods, and both connecting rods are connected to a moving ring. The inner wall of the moving ring is lined with a rubber liner. The rod-type measuring electrode passes through the rubber liner. The two electric telescopic rods drive the two connecting rods to move up and down, thereby causing the two connecting rods to move the moving ring up and down. This, in turn, causes the rubber liner to move up and down outside the rod-type measuring electrode, scraping away material adhering to the rod-type measuring electrode and ensuring measurement accuracy.

[0009] Preferably, the upper middle part of the outer wall of the protective tube is provided with two positioning strips arranged symmetrically from left to right, and the inner wall of the annular seat is provided with two U-shaped positioning grooves. The two positioning strips are respectively inserted into the two U-shaped positioning grooves, which can quickly position the connection between the annular seat and the protective tube and improve the convenience of installation.

[0010] Preferably, two positioning grooves are provided in the upper middle part of the outer wall of the protective tube, which are arranged symmetrically in front and behind. The positioning grooves are located below the positioning strips, and the threaded end of the first bolt is located in the positioning grooves. The two positioning strips can fix the position of the fixing ring and the protective tube.

[0011] Preferably, the top of both the front and rear sides of the fixed shell is provided with mounting wing plates, which are threaded to the bottom of the annular seat by a second bolt, facilitating the assembly and disassembly of the fixed shell.

[0012] Preferably, the connecting rod is sleeved on the outer wall of the movable rod of the electric telescopic rod, and three third bolts are threadedly connected to the outer side of the end of the connecting rod. The threaded end of the third bolt abuts against the outer wall of the movable rod of the electric telescopic rod, which facilitates the assembly and disassembly of the connecting rod and the electric telescopic rod.

[0013] Preferably, the bottom end of the protective tube is provided with an insulating limiting ring, and the bottom end of the outer wall of the connecting electrode is provided with an insulating tube. The top of the insulating tube abuts against the bottom of the insulating limiting ring, and the bottom of the insulating tube abuts against the top of the rod-type measuring electrode. The outer diameter of the insulating tube is the same as the outer diameter of the rod-type measuring electrode. When the rubber liner scrapes the material on the outer wall of the rod-type measuring electrode, the rubber liner moves upward and pushes the material on the outer wall of the rod-type measuring electrode upward to the outer wall of the insulating tube, ensuring that the material on the outer wall of the rod-type measuring electrode is scraped clean.

[0014] Preferably, an annular groove is formed at the bottom of the outer wall of the rod-type measuring electrode, and an insulating sleeve is adhered to the annular groove. The outer diameter of the insulating sleeve is the same as the outer diameter of the rod-type measuring electrode. When the rubber liner scrapes the material on the outer wall of the rod-type measuring electrode, the rubber liner moves downward and pushes the material on the outer wall of the rod-type measuring electrode downward to the outer wall of the insulating sleeve, ensuring that the material on the outer wall of the rod-type measuring electrode is scraped clean.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The electrode structure of this admittance level gauge effectively solves the problem of material adhesion on the electrode surface by setting a cleaning mechanism on the outside of the rod-type measuring electrode. The electric telescopic rod drives the rubber liner to move up and down, which can automatically remove the material adhering to the electrode, ensuring the accuracy of admittance measurement. This design reduces the frequency of manual electrode cleaning and improves the efficiency and convenience of equipment use and maintenance.

[0017] 2. The electrode structure of this admittance level gauge, through the continuous and effective operation of the cleaning mechanism, can ensure that the electrode surface remains clean during the measurement process, avoiding the impact of adhering materials on the electrode's conductivity, thereby improving the accuracy of level measurement. This improvement is particularly suitable for highly viscous media, ensuring measurement reliability under complex working conditions.

[0018] 3. The electrode structure of this admittance level gauge, including the application of insulating limiting rings and insulating tubes, as well as the annular groove designed at the bottom of the electrode and the bonded insulating sleeve, ensures that the rubber liner cleans the material from the outer wall of the rod-type measuring electrode, effectively avoiding signal errors. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the assembly structure of the protective tube and the annular seat in this utility model;

[0022] Figure 4 This is a schematic diagram of the annular seat structure in this utility model;

[0023] Figure 5 This is one of the partial structural schematic diagrams of this utility model;

[0024] Figure 6 This is the second partial structural schematic diagram of the present utility model;

[0025] Figure 7This is a schematic diagram of the assembly structure of the fixed shell and the electric telescopic rod in this utility model;

[0026] Figure 8 This is a partial structural schematic diagram of the cleaning component in this utility model;

[0027] In the diagram: 1. Housing; 10. Inlet pipe; 11. Housing cover; 2. Connector; 3. Connecting electrode; 4. Rod-type measuring electrode; 40. Annular groove; 5. Protective tube; 50. Positioning strip; 51. Positioning slot; 6. Insulating limiting ring; 7. Insulating tube; 8. Insulating sleeve; 9. Cleaning component; 90. Annular seat; 900. U-shaped positioning slot; 91. Fixing ring; 92. First bolt; 93. Fixing housing; 930. Mounting wing plate; 931. Second bolt; 94. Electric telescopic rod; 95. Connecting rod; 96. Third bolt; 97. Moving ring; 98. Rubber liner. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Please see Figures 1-8 This utility model provides a technical solution:

[0031] The admittance level gauge electrode structure includes a housing 1, which contains the circuit board and related components of the admittance level gauge. This is existing technology and will not be described in detail here. The top of the housing 1 is provided with a cover 11, the outer wall of the housing 1 is provided with an inlet pipe 10, the bottom of the housing 1 is provided with a connector 2, the bottom of the connector 2 is provided with a connecting electrode 3, the bottom end of the connecting electrode 3 is integrally formed with a rod-type measuring electrode 4, the outer wall of the connecting electrode 3 is provided with a protective tube 5, the outer diameter of the connecting electrode 3 is smaller than the outer diameter of the rod-type measuring electrode 4, and the outer diameter of the protective tube 5 is larger than the outer diameter of the rod-type measuring electrode 4.

[0032] The outer wall of the protective tube 5 is provided with a detachable cleaning component 9. The cleaning component 9 includes an annular seat 90 fitted onto the outer wall of the protective tube 5. The bottom of the annular seat 90 is provided with a fixing ring 91. The outer wall of the fixing ring 91 is threaded with two first bolts 92. The fixing ring 91 and the annular seat 90 are fixed to the outer wall of the protective tube 5. The bottom of the annular seat 90 and near the left and right ends are detachably connected to fixing shells 93. Each fixing shell 93 is provided with an electric telescopic rod 94. The inner cavity of the fixing shell 93 is adapted to the outer shell of the electric telescopic rod 94, so that the position of the electric telescopic rod 94 can be fixed. The electric telescopic rod 94 shares a power supply with the admittance level gauge, but can be operated independently. The control system allows the movable rods of the electric telescopic rods 94 to extend through the bottom of the inner wall of the fixed housing 93 to the outside. Each movable rod of the two electric telescopic rods 94 is connected to a connecting rod 95. Both connecting rods 95 are connected to a moving ring 97. The inner wall of the moving ring 97 is lined with a rubber liner 98. The rod-type measuring electrode 4 passes through the rubber liner 98. The two electric telescopic rods 94 drive the two connecting rods 95 to move up and down, thereby causing the two connecting rods 95 to move the moving ring 97 up and down. This, in turn, causes the rubber liner 98 to move up and down on the outside of the rod-type measuring electrode 4, scraping away any material adhering to the rod-type measuring electrode 4, thus ensuring the accuracy of the measurement.

[0033] In this embodiment, two positioning strips 50 are provided in the upper middle part of the outer wall of the protective tube 5, which are arranged symmetrically on the left and right. Two U-shaped positioning grooves 900 are opened on the inner wall of the annular seat 90. The two positioning strips 50 are respectively inserted into the two U-shaped positioning grooves 900, which can quickly position the connection between the annular seat 90 and the protective tube 5, and improve the convenience of installation.

[0034] Specifically, two positioning grooves 51 are provided in the upper middle part of the outer wall of the protective tube 5, which are arranged symmetrically in front and behind. The positioning grooves 51 are located below the positioning strips 50. The threaded end of the first bolt 92 is located in the positioning grooves 51. The two positioning strips 50 can fix the position of the fixing ring 91 and the protective tube 5.

[0035] Furthermore, mounting wing plates 930 are provided on the top of both the front and rear sides of the fixed housing 93. The mounting wing plates 930 are threadedly connected to the bottom of the annular seat 90 by the second bolt 931, which facilitates the assembly and disassembly of the fixed housing 93.

[0036] Furthermore, the connecting rod 95 is sleeved on the outer wall of the movable rod of the electric telescopic rod 94, and three third bolts 96 are threadedly connected to the outer side of the end of the connecting rod 95. The threaded end of the third bolt 96 abuts against the outer wall of the movable rod of the electric telescopic rod 94, which facilitates the assembly and disassembly of the connecting rod 95 and the electric telescopic rod 94.

[0037] Furthermore, the bottom end of the protective tube 5 is provided with an insulating limiting ring 6, and the bottom end of the connecting electrode 3 is provided with an insulating tube 7. The top of the insulating tube 7 abuts against the bottom of the insulating limiting ring 6, and the bottom of the insulating tube 7 abuts against the top of the rod-type measuring electrode 4. The outer diameter of the insulating tube 7 is the same as the outer diameter of the rod-type measuring electrode 4. When the rubber liner 98 scrapes the material on the outer wall of the rod-type measuring electrode 4, the rubber liner 98 moves upward to push the material on the outer wall of the rod-type measuring electrode 4 upward to the outer wall of the insulating tube 7, ensuring that the material on the outer wall of the rod-type measuring electrode 4 is cleaned.

[0038] Furthermore, an annular groove 40 is provided at the bottom of the outer wall of the rod-type measuring electrode 4, and an insulating sleeve 8 is bonded to the annular groove 40. The outer diameter of the insulating sleeve 8 is the same as the outer diameter of the rod-type measuring electrode 4. When the rubber liner 98 scrapes the material on the outer wall of the rod-type measuring electrode 4, the rubber liner 98 moves down and can push the material on the outer wall of the rod-type measuring electrode 4 downward to the outer wall of the insulating sleeve 8, ensuring that the material on the outer wall of the rod-type measuring electrode 4 is cleaned.

[0039] In this embodiment of the admittance level gauge electrode structure, during use, the connector 2 is first connected to the container containing the material to be measured, and then the cleaning component 9 is installed on the protective tube 5. Place the annular seat 90 and the fixed ring 91 on the outside of the protective tube 5, so that the two positioning strips 50 are moved into the two U-shaped positioning grooves 900 respectively. Then tighten the two first bolts 92 so that the threaded ends of the two first bolts 92 are respectively inserted into the two positioning grooves 51. Then install the electric telescopic rod 94 in the fixed shell 93. Then use the second bolt 931 to fix the mounting wing plate 930 to the bottom of the annular seat 90. After that, put the rubber liner 98 on the outside of the rod-type measuring electrode 4 and move it toward the movable rod of the electric telescopic rod 94 so that the two connecting rods 95 are respectively put on the outer wall of the movable rod of the two electric telescopic rods 94. Tighten the third bolt 96 so that the connecting rods 95 can move with the movable rod of the electric telescopic rod 94. When the admittance level gauge is working, the movable rod of the electric telescopic rod 94 repeatedly extends and retracts, driving the moving ring 97 and the rubber liner 98 to move on the outside of the rod-type measuring electrode 4 to remove the material attached to the surface of the rod-type measuring electrode 4, ensuring the long-term stable, accurate and efficient operation of the admittance level gauge.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An admittance level gauge electrode structure, comprising a housing (1), wherein a cover (11) is provided on the top of the housing (1), and an inlet pipe (10) is provided on the outer wall of the housing (1), characterized in that: The bottom of the housing (1) is provided with a connector (2), the bottom of the connector (2) is provided with a connecting electrode (3), the bottom end of the connecting electrode (3) is integrally formed with a rod-type measuring electrode (4), the outer wall of the connecting electrode (3) is provided with a protective tube (5), the outer wall of the protective tube (5) is provided with a detachable cleaning component (9), the cleaning component (9) includes an annular seat (90) sleeved on the outer wall of the protective tube (5), the bottom of the annular seat (90) is provided with a fixing ring (91), the outer wall of the fixing ring (91) is threaded with two first bolts (92), so The bottom of the ring seat (90) and near the left and right ends are detachably connected to fixed shells (93). Both fixed shells (93) are equipped with electric telescopic rods (94). The movable rod of the electric telescopic rod (94) passes through the bottom of the inner wall of the fixed shell (93) to the outside. The movable rod of the two electric telescopic rods (94) is connected to a connecting rod (95). The two connecting rods (95) are connected to a moving ring (97). The inner wall of the moving ring (97) is provided with a rubber liner (98). The rod-type measuring electrode (4) passes through the rubber liner (98).

2. The admittance level gauge electrode structure according to claim 1, characterized in that: The upper middle part of the outer wall of the protective tube (5) is provided with two positioning strips (50) arranged symmetrically on the left and right. The inner wall of the annular seat (90) is provided with two U-shaped positioning grooves (900). The two positioning strips (50) are respectively inserted into the two U-shaped positioning grooves (900).

3. The admittance level gauge electrode structure according to claim 2, characterized in that: The upper middle part of the outer wall of the protective tube (5) has two positioning grooves (51) arranged symmetrically in front and behind. The positioning grooves (51) are located below the positioning strip (50), and the threaded end of the first bolt (92) is located in the positioning groove (51).

4. The admittance level gauge electrode structure according to claim 1, characterized in that: The top of the front and rear sides of the fixed shell (93) are provided with mounting wing plates (930), and the mounting wing plates (930) are threaded to the bottom of the annular seat (90) by the second bolt (931).

5. The admittance level gauge electrode structure according to claim 1, characterized in that: The connecting rod (95) is sleeved on the outer wall of the movable rod of the electric telescopic rod (94), and three third bolts (96) are threadedly connected to the outer side of the end of the connecting rod (95), and the threaded end of the third bolt (96) abuts against the outer wall of the movable rod of the electric telescopic rod (94).

6. The admittance level gauge electrode structure according to claim 1, characterized in that: The bottom end of the protective tube (5) is provided with an insulating limiting ring (6), and the bottom end of the outer wall of the connecting electrode (3) is provided with an insulating tube (7). The top of the insulating tube (7) abuts against the bottom of the insulating limiting ring (6), and the bottom of the insulating tube (7) abuts against the top of the rod measuring electrode (4). The outer diameter of the insulating tube (7) is the same as the outer diameter of the rod measuring electrode (4).

7. The admittance level gauge electrode structure according to claim 1, characterized in that: The bottom of the outer wall of the rod-type measuring electrode (4) is provided with an annular groove (40), and an insulating sleeve (8) is bonded to the annular groove (40). The outer diameter of the insulating sleeve (8) is the same as the outer diameter of the rod-type measuring electrode (4).

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