Method for measuring liquid level based on dielectric constant

Abstract

The present invention provides a method for measuring liquid level based on dielectric constant, which relates to the field of liquid level measurement technology, and includes: a fixed seat, a vertical tube is fixedly installed at the bottom of the fixed seat, a vertical groove is opened on the surface of the vertical tube, and a support seat is threadedly connected to the bottom of the vertical tube. The present invention installs the first outer tube and the electrode plate inside the inner tube, and through the contraction of the clamping block, the movement of the clamping block is driven by the expansion of the first compression spring, so that the clamping block enters the inside of the clamping groove, so as to quickly install and fix. When disassembling, by pressing a button, the button drives the two arc plates to move inward, thereby driving the extrusion block to squeeze the clamping block, so that the clamping block enters the inside of the inner tube, so that the inner tube loses its limit and can be taken out, thereby achieving the effect of efficient installation and disassembly. Through the setting of the central processing unit, it is convenient to efficiently calculate the liquid level change, thereby improving the stability and efficiency of the liquid level change measurement.

Description

Technical Field

[0001] The invention relates to the technical field of liquid level measurement, and in particular to a method for measuring liquid level based on dielectric constant. Background Art

[0002] Dielectric constant liquid level measurement is a liquid level measurement method based on the difference in dielectric properties of the medium. This method uses a capacitive liquid level gauge. When the liquid level rises or falls, the distance between the capacitor plates will change. By accurately measuring the change in this distance height and combining the correspondence between the plate distance and the liquid level, accurate measurement of the liquid level can be achieved. Dielectric constant liquid level measurement has the advantages of high measurement accuracy, good stability, and strong adaptability. It is widely used in various liquid level measurement occasions. At the same time, this method can also realize non-contact measurement, avoiding problems such as liquid leakage and contamination that may exist in traditional liquid level measurement methods. Therefore, dielectric constant liquid level measurement has broad application prospects in industrial automation, environmental monitoring and other fields.

[0003] Existing capacitors usually require bolts for fixing during installation, which makes disassembly more complicated. When tighter parts need to be replaced, the efficiency is low and it is easy to damage the capacitor plates, reducing the accuracy of liquid level measurement.

[0004] Therefore, it is necessary to redesign the inspection helmet to effectively prevent the problems existing in the above-mentioned background technology. Summary of the invention

[0005] The present invention provides a method for measuring liquid level based on dielectric constant to solve the problems raised by the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0007] An embodiment of the present invention provides a method for measuring liquid level based on dielectric constant, comprising: a fixed seat, a vertical tube fixedly installed at the bottom of the fixed seat, a vertical groove opened on the surface of the vertical tube, a support seat threadedly connected to the bottom of the vertical tube, four guide blocks slidably connected inside the vertical grooves, a fixed rod fixedly connected to the inner side of the guide block, a floating plate arranged on the outer side of the fixed rod, pole plates arranged on the top of the floating plate and the bottom of the fixed seat, a positioning mechanism arranged on the outer side of the pole plate, and the positioning mechanism is used to fix the pole plate.

[0008] Through the above technical solution, the structure is stable and the installation is convenient: the threaded connection design of the fixed seat, vertical pipe and support seat ensures the stable installation of the entire measuring device, and is convenient for later maintenance and disassembly. The sliding connection between the guide block and the vertical slot not only ensures the vertical lifting of the floating plate, but also enhances the stability of the device and accurate measurement: the floating plate rises and falls with the liquid level, driving the change of the capacitance value between the electrode on the fixed rod and the electrode at the bottom of the fixed seat, and using the dielectric constant principle to achieve accurate measurement of the liquid level. This non-contact measurement method reduces errors and improves the accuracy of measurement.

[0009] Furthermore, the positioning mechanism includes an inner tube, the surface of the inner wall of the inner tube is fixedly connected to a cross bar, the surface of the cross bar is sleeved with a first compression spring, the surface of the cross bar is slidably connected to a clamping block, and the top of the clamping block is rounded.

[0010] Through the above technical solution, through the action of the first compression spring, the clamping block can be moved to both sides to fix the first outer tube. At the same time, the top of the clamping block is rounded. This detailed design not only improves the aesthetics, but more importantly, reduces the risk of scratches or damage caused by sharp edges during installation and maintenance, while improving the smoothness of the movement of the clamping block and enhancing the safety of operation.

[0011] Furthermore, the top and bottom of the abutting block are fixedly connected with sliding bars, and the sliding bars are used in conjunction with the surface of the inner wall of the inner tube. The number of the abutting blocks arranged on the surface of the inner tube is four.

[0012] Through the above technical scheme, the setting of the sliding bar facilitates the limiting of the clamping block, thereby improving the stability of the movement of the clamping block. At the same time, the number of the clamping blocks is set to four, which effectively improves the stability of the clamping block fixing the first outer tube, prevents the first outer tube from shaking and deflecting, improves the efficiency of fixing the first outer tube, and thus improves the efficiency of fixing the electrode plate.

[0013] Furthermore, a first outer tube and a second outer tube are arranged on the outer side of the inner tube, a clamping groove is opened on the surface of the first outer tube, the inside of the clamping groove is rounded corresponding to the clamping block, and the clamping groove runs through the surface of the first outer tube.

[0014] Through the above technical solution, by setting the clamping groove, it is convenient to efficiently connect the clamping block with the first outer tube, so that the electrode plate is efficient and stable during the moving operation.

[0015] Furthermore, a reinforcement rod is fixedly connected to the surface of the inner wall of the second outer tube, a horizontal rod is fixedly connected to the inner side of the reinforcement rod, a first arc plate and a second arc plate are slidably connected to the surface of the horizontal rod, a second compression spring is sleeved on the surface of the horizontal rod, and the second compression spring is located on the inner side of the first arc plate and the second arc plate.

[0016] Through the above technical solution, the first arc plate and the second arc plate move inward to compress the second compression spring so that the extrusion block can be efficiently extruded and reset, thereby improving the efficiency of disassembly of the inner tube and the first, and facilitating users to quickly install and disassemble.

[0017] Furthermore, buttons are fixedly connected to the outer sides of the first arc plate and the second arc plate, and the buttons are fixedly passed through the outer side of the second outer tube. Extrusion blocks are fixedly connected to the inner sides of the first arc plate and the second arc plate, and the extrusion blocks are used in conjunction with the tightening blocks.

[0018] Through the above technical solution, through the setting of the button, it is convenient to squeeze the first arc plate and the second arc plate, so that the first arc plate and the second arc plate move inward, so that the extrusion block is squeezed while the compression spring is compressed, so that the pressing block is driven to move inward by the extrusion block, so that the pressing block enters the interior of the inner tube, so as to be quickly disassembled.

[0019] Furthermore, the top of the second arc-shaped plate is fixedly connected to the electrode plate, and the surface of the button and the bottom of the second outer tube are both provided with sealing rings, and the material of the sealing rings is rubber.

[0020] Through the above technical solution, by setting the sealing ring, it is convenient to seal the second outer tube to prevent liquid from entering the interior of the second outer tube, thereby ensuring the sealing inside the second outer tube and improving the stability and safety of the parts.

[0021] Furthermore, a central processing unit is fixedly installed inside the fixing seat, and the central processing unit is electrically connected to the two electrode plates through wires.

[0022] Through the above technical solution, through the setting of the central processing unit, it is convenient to efficiently calculate the liquid level change, thereby improving the stability and efficiency of the liquid level change measurement, and facilitating the use of users.

[0023] Furthermore, a calculation formula D=∈*a / c is provided inside the central processing unit, wherein: c is the plate value of the plate, in farad (F), ∈ is the dielectric constant of the medium between the plates, in farad per meter (F / m), A is the area of ​​the plate, in square meters (㎡), and D is the distance between the plates, in meters (m).

[0024] Measuring liquid level based on dielectric constant includes the following steps:

[0025] S1; The central processing unit calculates the maximum distance between the two plates through the circuit and the formula D = ∈ * a / c, which is recorded as: D1.

[0026] S2; Add liquid into the container. When the liquid level is stable, one of the plates is driven to move to the top by the floating plate. The distance between the two plates is calculated by the formula D = ∈ * a / c, which is recorded as: D2.

[0027] S3: The central processing unit calculates the difference between the two distances D1 and D2 to calculate the height of the liquid level.

[0028] The above solution of the present invention includes at least the following beneficial effects:

[0029] 1. The present invention installs the first outer tube and the electrode plate inside the inner tube, contracts the clamping block, and expands the first compression spring to drive the clamping block to move, so that the clamping block enters the inside of the clamping groove, thereby quickly installing and fixing. When disassembling, by pressing a button, the button drives the two arc plates to move inward, thereby driving the extrusion block to squeeze the clamping block, so that the clamping block enters the inside of the inner tube, so that the inner tube loses its limit and can be taken out, thereby achieving the effect of efficient installation and disassembly.

[0030] 2. The present invention facilitates efficient calculation of liquid level changes through the provision of a central processing unit, thereby improving the stability and efficiency of liquid level change measurement and facilitating use by users. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the fixing seat of the present invention;

[0032] Figure 2 It is a schematic diagram of the floating plate structure of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the guide block of the present invention;

[0034] Figure 4 It is a schematic diagram of the structure of the second outer tube of the present invention;

[0035] Figure 5 The present invention Figure 4 The enlarged structural diagram at A in the middle;

[0036] Figure 6 It is a schematic diagram of the structure of the clamping groove of the present invention;

[0037] Figure 7 The present invention Figure 6 The enlarged structural diagram at B in the middle;

[0038] Figure 8 It is a schematic diagram of the structure of the central processing unit of the present invention.

[0039] Description of reference numerals:

[0040] 1. Fixed seat; 2. Vertical tube; 3. Vertical groove; 4. Support seat; 5. Guide block; 6. Fixed rod; 7. Floating plate; 8. Plate; 9. Positioning mechanism; 91. Inner tube; 92. Cross bar; 93. First compression spring; 94. Clamping block; 95. Sliding bar; 96. First outer tube; 97. Second outer tube; 98. Clamping groove; 99. Reinforcement rod; 910. Horizontal rod; 911. First arc plate; 912. Second arc; 913. Second compression spring; 914. Button; 915. Extrusion block; 916. Sealing ring; 10. Central processing unit. DETAILED DESCRIPTION

[0041] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0042] like Figures 1 to 8 As shown, it includes: a fixed seat 1, a vertical pipe 2 is fixedly installed at the bottom of the fixed seat 1, a vertical groove 3 is opened on the surface of the vertical pipe 2, a support seat 4 is threadedly connected to the bottom of the vertical pipe 2, and a guide block 5 is slidably connected inside the four vertical grooves 3, a fixed rod 6 is fixedly connected to the inner side of the guide block 5, a floating plate 7 is arranged on the outer side of the fixed rod 6, and a plate 8 is arranged on the top of the floating plate 7 and the bottom of the fixed seat 1, and a positioning mechanism 9 is arranged on the outer side of the plate 8, and the positioning mechanism 9 is used to fix the plate 8. The structure is stable and easy to install: through the threaded connection design of the fixed seat 1, the vertical pipe 2 and the support seat 4, the stable installation of the entire measuring device is ensured, and it is convenient for later maintenance and disassembly. The sliding connection between the guide block 5 and the vertical groove 3 not only ensures the vertical lifting of the floating plate 7, but also enhances the stability of the device, and accurately measures: the floating plate 7 rises and falls with the liquid level, driving the change of the capacitance value between the plate 8 on the fixed rod 6 and the plate 8 at the bottom of the fixed seat 1, and the dielectric constant principle is used to achieve accurate measurement of the liquid level. This non-contact measurement method reduces errors and improves the accuracy of measurement.

[0043] like Figures 1 to 8As shown, the positioning mechanism 9 includes an inner tube 91, the surface of the inner wall of the inner tube 91 is fixedly connected with a cross bar 92, the surface of the cross bar 92 is sleeved with a first compression spring 93, and the surface of the cross bar 92 is slidably connected with a tightening block 94, and the top of the tightening block 94 is rounded. Through the action of the first compression spring 93, the tightening block 94 is convenient to move to both sides, thereby fixing the first outer tube 96. At the same time, the top of the tightening block 94 is rounded. This detail design not only improves the aesthetics, but more importantly, it reduces the risk of scratches or damage caused by sharp corners during installation and maintenance. At the same time, it improves the smoothness of the movement of the tightening block 94 and enhances the safety of operation. The top and bottom of the tightening block 94 are fixedly connected with a slide bar 95, and the slide bar 95 is connected to the inner tube 9 1, the number of the abutting blocks 94 arranged on the surface of the inner tube 91 is four, and the setting of the slide bar 95 is convenient for limiting the abutting blocks 94, thereby improving the stability of the movement of the abutting blocks 94. At the same time, the number of the abutting blocks 94 is set to four, which effectively improves the stability of the abutting blocks 94 fixing the first outer tube 96, prevents the first outer tube 96 from shaking and deflecting, improves the efficiency of fixing the first outer tube 96, and thus improves the efficiency of fixing the electrode plate 8. The outer side of the inner tube 91 is provided with a first outer tube 96 and a second outer tube 97. The surface of the first outer tube 96 is provided with a clamping groove 98, and the inside of the clamping groove 98 is rounded corresponding to the abutting block 94. The clamping groove 98 runs through the surface of the first outer tube 96. The arrangement facilitates efficient connection between the abutting block 94 and the first outer tube 96, so that the pole plate 8 is efficient and stable during the moving operation. The surface of the inner wall of the second outer tube 97 is fixedly connected with a reinforcing rod 99, and the inner side of the reinforcing rod 99 is fixedly connected with a horizontal rod 910. The surface of the horizontal rod 910 is slidably connected with a first arc plate 911 and a second arc plate 912. The surface of the horizontal rod 910 is sleeved with a second compression spring 913, and the second compression spring 913 is located on the inner side of the first arc plate 911 and the second arc plate 912. The first arc plate 911 and the second arc plate 912 move inward to compress the second compression spring 913, so that the extrusion block 915 can be efficiently extruded and reset, thereby improving the efficiency of the inner tube 91 and the first disassembly, and facilitating The user can quickly install and disassemble. The outer sides of the first arc plate 911 and the second arc plate 912 are fixedly connected with buttons 914. The button 914 is fixedly passed through the outer side of the second outer tube 97. The inner sides of the first arc plate 911 and the second arc plate 912 are fixedly connected with extrusion blocks 915. The extrusion blocks 915 are used together with the tightening blocks 94. The setting of the button 914 facilitates the extrusion of the first arc plate 911 and the second arc plate 912, so that the first arc plate 911 and the second arc plate 912 move inward, thereby compressing the compression spring and squeezing the extrusion block 915 at the same time, so that the tightening block 94 is driven to move inward by the extrusion block 915, so that the tightening block 94 enters the interior of the inner tube 91, thereby quickly disassembling.

[0044] like Figures 1 to 8 As shown, the top of the second arc-shaped plate 912 is fixedly connected to the electrode 8, and the surface of the button 914 and the bottom of the second outer tube 97 are both provided with a sealing ring 916, and the material of the sealing ring 916 is rubber. The setting of the sealing ring 916 is convenient for sealing the second outer tube 97 to prevent liquid from entering the interior of the second outer tube 97, thereby ensuring the sealing of the interior of the second outer tube 97, and improving the stability and safety of the use of parts. A central processing unit 10 is fixedly installed inside the fixing seat 1, and the central processing unit is electrically connected to the two electrode plates 8 through wires. The setting of the central processing unit 10 is convenient for efficient calculation of liquid level changes, thereby improving the stability and efficiency of liquid level change measurement, and facilitating user use.

[0045] A calculation formula D=∈*a / c is provided inside the central processing unit 10, wherein: c is the plate value of the plate 8, in Farad (F), ∈ is the dielectric constant of the medium between the plates 8, in Farad per meter (F / m), A is the area of ​​the plate 8, in square meters (㎡), and D is the distance between the plates 8, in meters (m).

[0046] The following steps are involved:

[0047] S1; the central processing unit 10 calculates the maximum distance between the two plates 8 through the circuit and the formula D = ∈ * a / c, which is recorded as: D1.

[0048] S2; Add liquid to the inside of the container. When the liquid level is stable, one of the plates 8 is driven to move to the top by the floating plate 7. The distance between the two plates 8 is calculated by the formula D = ∈ * a / c, and is recorded as: D2.

[0049] S3: The central processing unit calculates the difference between the two distances D1 and D2 to calculate the height of the liquid level.

[0050] In the embodiment of the present invention, the first outer tube 96 and the electrode plate 8 are installed inside the inner tube 91, and the clamping block 94 is contracted, and the expansion of the first compression spring 93 drives the movement of the clamping block 94, so that the clamping block 94 enters the inside of the clamping groove 98, so as to achieve rapid installation and fixation. When disassembly is desired, the button 914 is pressed, and the button 914 drives the two arc plates to move inward, thereby driving the extrusion block 915 to squeeze the clamping block 94, so that the clamping block 94 enters the inside of the inner tube 91, so that the inner tube 91 loses its limit and can be taken out, thereby achieving the effect of efficient installation and disassembly.

[0051] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Measuring liquid level based on dielectric constant, characterized in that: include: A fixing seat (1), wherein a vertical pipe (2) is fixedly mounted at the bottom of the fixing seat (1), a vertical groove (3) is provided on the surface of the vertical pipe (2), a support seat (4) is threadedly connected to the bottom of the vertical pipe (2), a guide block (5) is slidably connected inside the four vertical grooves (3), a fixing rod (6) is fixedly connected to the inner side of the guide block (5), a floating plate (7) is arranged on the outer side of the fixing rod (6), a pole plate (8) is arranged on the top of the floating plate (7) and the bottom of the fixing seat (1), a positioning mechanism (9) is arranged on the outer side of the pole plate (8), and the positioning mechanism (9) is used to fix the pole plate (8).

2. The method for measuring liquid level based on dielectric constant according to claim 1, characterized in that: The positioning mechanism (9) comprises an inner tube (91), the inner wall surface of the inner tube (91) is fixedly connected to a cross bar (92), the surface of the cross bar (92) is sleeved with a first compression spring (93), the surface of the cross bar (92) is slidably connected to a clamping block (94), and the top of the clamping block (94) is rounded.

3. The method for measuring liquid level based on dielectric constant according to claim 2, characterized in that: The top and bottom of the abutting block (94) are fixedly connected with a slide bar (95), and the slide bar (95) is used in conjunction with the surface of the inner wall of the inner tube (91). The number of abutting blocks (94) arranged on the surface of the inner tube (91) is four.

4. The method for measuring liquid level based on dielectric constant according to claim 2, characterized in that: A first outer tube (96) and a second outer tube (97) are arranged on the outer side of the inner tube (91); a clamping groove (98) is provided on the surface of the first outer tube (96); the inside of the clamping groove (98) is rounded to correspond to the clamping block (94); and the clamping groove (98) runs through the surface of the first outer tube (96).

5. The method for measuring liquid level based on dielectric constant according to claim 4, characterized in that: The surface of the inner wall of the second outer tube (97) is fixedly connected to a reinforcing rod (99), the inner side of the reinforcing rod (99) is fixedly connected to a horizontal rod (910), the surface of the horizontal rod (910) is slidably connected to a first arc plate (911) and a second arc plate (912), the surface of the horizontal rod (910) is sleeved with a second compression spring (913), and the second compression spring (913) is located on the inner side of the first arc plate (911) and the second arc plate (912).

6. The method for measuring liquid level based on dielectric constant according to claim 5, characterized in that: The outer sides of the first arc-shaped plate (911) and the second arc-shaped plate (912) are fixedly connected with buttons (914), and the buttons (914) are fixedly passed through the outer side of the second outer tube (97). The inner sides of the first arc-shaped plate (911) and the second arc-shaped plate (912) are fixedly connected with extrusion blocks (915), and the extrusion blocks (915) are used in conjunction with the abutment blocks (94).

7. The method for measuring liquid level based on dielectric constant according to claim 6, characterized in that: The top of the second arc-shaped plate (912) is fixedly connected to the pole plate (8), and the surface of the button (914) and the bottom of the second outer tube (97) are both provided with a sealing ring (916), and the material of the sealing ring (916) is rubber.

8. The method for measuring liquid level based on dielectric constant according to claim 1, characterized in that: A central processing unit (10) is fixedly installed inside the fixing seat (1), and the central processing unit is electrically connected to the two electrode plates (8) via electric wires.

9. The method for measuring liquid level based on dielectric constant according to claim 8, characterized in that: The central processing unit (10) is internally provided with a calculation formula D=∈*a / c, wherein: c is the plate value of the plate (8), the unit is farad (F), ∈ is the dielectric constant of the medium between the plates (8), the unit is farad per meter (F / m), A is the area of ​​the plate (8), the unit is square meter (㎡), and D is the distance between the plates (8), the unit is meter (m).

10. The method for measuring liquid level based on dielectric constant according to claim 8, characterized in that: The following steps are involved: S1; the central processing unit (10) calculates the maximum distance between the two plates (8) through the circuit and the formula D = ∈ * a / c, which is recorded as: D1. S2; liquid is added to the container. When the liquid level is stable, one of the plates (8) is driven to move to the top by the floating plate (7). The distance between the two plates (8) is calculated by the formula D = ∈ * a / c, which is recorded as: D2. S3: The central processing unit calculates the difference between the two distances D1 and D2 to calculate the height of the liquid level.

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