Liquid level detection device for material storage tank

Abstract

The utility model relates to the technical field of liquid level detection, and discloses a liquid level detection device for a material storage tank, which comprises a material storage tank body, a top cover and a liquid level detection mechanism. According to the liquid level detection device for the material storage tank, the two stainless steel current-conducting rods vertically inserted into the tank are adopted, power is supplied through the charging module, the liquid level detection device can be suitable for detection of various media under the highly accurate, stable and reliable conditions, when the liquid level of the material storage tank rises, liquid can gradually submerge gaps between the current-conducting rods, the capacitance is increased, and the detection efficiency is improved. The processor calculates the accurate height of the current liquid level by monitoring the change of the capacitance and according to the formula L = (C-C0) / K, the calculated liquid level value is transmitted to the upper computer through the communication module, remote monitoring is achieved, in addition, the rubber pad effectively reduces measurement errors caused by vibration, the stainless steel material is resistant to corrosion and liquid fluctuation, and the measurement accuracy is improved. Therefore, long-term stable use and high-precision measurement in various environments are ensured.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of liquid level detection, in particular to a liquid level detection device for a material storage tank. BACKGROUND

[0002] In the liquid storage industry, liquid level detection is an important monitoring index, and traditional liquid level detection methods mainly include floating ball type, ultrasonic type, radar type and capacitive type. These methods have their own characteristics in practical application, and promote the technical progress and development of the industry.

[0003] The existing liquid level detection method has the problem of unstable measurement accuracy, especially in the case of large liquid fluctuation, and the application range is limited, and it cannot well cope with the changes of different media. In order to solve the above problems, the application provides a liquid level detection device for a material storage tank. CONTENT OF THE INVENTION

[0004] In view of the deficiencies of the prior art, the application provides a liquid level detection device for a material storage tank, which has high measurement accuracy and stability, is suitable for detection of various media, and is more practical.

[0005] To achieve the above purpose, the application provides the following technical scheme: a liquid level detection device for a material storage tank, comprising a material storage tank body, a top cover and a liquid level detection mechanism, the liquid level detection mechanism comprising an aluminum alloy support, a connecting ring fixedly connected to the outer surface of the aluminum alloy support, and a rubber pad fixedly connected to the bottom surface of the connecting ring, the bottom of the aluminum alloy support is vertically provided with two stainless steel conductive rods, the top of the aluminum alloy support is fixedly connected with a protection box, the inner wall of the protection box is provided with a power module, a processor, a memory and a communication module, the memory and the communication module are electrically connected with the processor, the two stainless steel conductive rods and the processor are electrically connected with the power module, the outer surface of the protection box is provided with a data interface, the data interface is electrically connected with the processor, and the outer surface of the protection box is provided with a charging port electrically connected with the power module.

[0006] Through the above scheme, the liquid level detection mechanism can realize high measurement accuracy and stability, is suitable for detection of various media, is more practical, two stainless steel conductive rods are vertically inserted into the inside of the material storage tank body during measurement, and the stainless steel conductive rods are powered by the power module, when the liquid level of the material storage tank body rises, the liquid gradually covers the area between the two stainless steel conductive rods, so that the capacitance increases, the processor calculates the height of the current liquid level by detecting the change of the capacitance, the calculation formula is L = (C - C0) / K, the processor transmits the calculated liquid level value to the upper computer through the communication module, realizes remote monitoring, the rubber pad can reduce the measurement instability caused by vibration, the material of the stainless steel conductive rod has good corrosion resistance, and can be used in various corrosive environments for a long time, and the influence of liquid fluctuation on detection accuracy is reduced, and it is more practical.

[0007] Further, the top cover is mounted on the top of the material storage tank body by bolts, the upper surface of the top cover is fixedly connected with a connecting seat, and the upper surface of the connecting seat is fixedly connected with a plurality of connecting bolts.

[0008] Through the above scheme, the connecting seat, the connecting bolt and the nut can facilitate the installation work of the corresponding components.

[0009] Further, the connecting ring and the rubber pad are matched with the connecting seat, and the aluminum alloy support is mounted on the top of the top cover through the connecting ring, the rubber pad, the connecting seat, the connecting bolt and the nut.

[0010] Through the above scheme, by limiting the above relationship, the liquid level detection mechanism can be conveniently and stably disassembled on the top cover, and the use is facilitated.

[0011] Further, the upper surface of the protection box is provided with a detachable protection cover, and the upper surface of the protection cover is provided with a folding handle.

[0012] Through the above scheme, by setting the detachable protection cover, the electrical elements in the protection box can be conveniently maintained regularly, and by setting the folding handle, the worker can carry the liquid level detection mechanism to move, so that the liquid level detection mechanism has the effect of being portable.

[0013] Further, the outer surface of the protection box is provided with a plurality of ventilation holes, and each ventilation hole is obliquely upward.

[0014] Through the above scheme, the ventilation holes can ensure that the inside of the protection box can be normally ventilated, and prevent the inside of the protection box from being overheated.

[0015] Further, the top of the top cover is provided with a material injection opening, and the top of the material injection opening is provided with a sealing plug.

[0016] Through the above scheme, the material injection opening can facilitate the addition of the material to be stored to the inside of the material storage tank body.

[0017] Further, the bottom of the material storage tank body is provided with a material discharge opening, and the inside of the material discharge opening is provided with a valve.

[0018] Through the above scheme, the material discharge opening can facilitate the discharge of the material stored in the inside of the material storage tank body to the outside.

[0019] Further, the four corners of the bottom surface of the material storage tank body are fixedly connected with support columns.

[0020] Through the above scheme, the support columns can make the device more stably placed on the ground, facilitating the stable storage of the material.

[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0022] The liquid level detection device for the material storage tank adopts two stainless steel conductive rods vertically inserted into the tank, is powered by a charging module, and is applicable to the detection of various media under the conditions of high accuracy, stability and reliability. When the liquid level of the material storage tank rises, the liquid will gradually flood the gap between the conductive rods, resulting in an increase in the capacitance. The processor monitors the change in the capacitance and calculates the accurate height of the current liquid level according to the formula L = (C - C0) / K. The calculated liquid level value is transmitted to the upper computer through the communication module, realizing remote monitoring. In addition, the rubber pad effectively reduces the measurement error caused by vibration, and the stainless steel material itself is corrosion-resistant and can resist liquid fluctuations, thereby ensuring long-term stable use and high-precision measurement in various environments. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a whole front view structural schematic diagram of the structure of the present application;

[0024] Figure 2 It is a local sectional view structural schematic diagram of the structure of the present application;

[0025] Figure 3 It is a first local plan view structural schematic diagram of the structure of the present application;

[0026] Figure 4 It is a second local plan view structural schematic diagram of the structure of the present application.

[0027] In the drawings:

[0028] 1, material storage tank body; 2, top cover; 3, connecting seat; 4, connecting bolt; 5, nut; 6, liquid level detection mechanism; 601, aluminum alloy support; 602, connecting ring; 603, rubber pad; 604, stainless steel conducting rod; 605, protection box; 606, power module; 607, processor; 608, memory; 609, communication module; 610, data interface; 611, charging port; 612, protective cover; 613, folding handle; 614, air vent; 7, material injection port; 8, material discharge port; 9, support. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to 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 embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0030] Please refer to Figure 1 , Figure 2 and Figure 3 , a liquid level detection device for a material storage tank in the embodiment, comprising a material storage tank body 1, a top cover 2 and a liquid level detection mechanism 6, the liquid level detection mechanism 6 comprises an aluminum alloy support 601 and a connecting ring 602 fixedly connected to the outer surface of the aluminum alloy support 601, and a rubber pad 603 fixedly connected to the bottom surface of the connecting ring 602, the top cover 2 is installed on the top of the material storage tank body 1 by bolts, the upper surface of the top cover 2 is fixedly connected with a connecting seat 3, the upper surface of the connecting seat 3 is fixedly connected with a plurality of connecting bolts 4, the outer surface of each connecting bolt 4 is threadedly connected with a nut 5, the connecting seat 3, the connecting bolt 4 and the nut 5 are provided to facilitate the installation of the corresponding components, the connecting ring 602 and the rubber pad 603 are adapted to the connecting seat 3, the aluminum alloy support 601 is installed on the top of the top cover 2 through the connecting ring 602, the rubber pad 603, the connecting seat 3, the connecting bolt 4 and the nut 5, through the above relationship, the liquid level detection mechanism 6 can be conveniently and stably disassembled and assembled on the top cover 2, which is convenient to use.

[0031] Please refer to Figure 2 , Figure 3 and Figure 4The bottom of the aluminum alloy support 601 is vertically provided with two stainless steel conductive rods 604 in parallel, which can form a more uniform electric field, facilitate the measurement of liquid level height, and due to the material characteristics of the stainless steel conductive rods 604, the device can be applied to the detection of various media, and at the same time, the liquid will gradually immerse the stainless steel conductive rods 604 during detection, such a measurement method can improve the measurement accuracy and can well cope with the situation that the liquid fluctuation is large. The top of the aluminum alloy support 601 is fixedly connected with a protection box 605, the inner wall of the protection box 605 is provided with a power module 606, a processor 607, a memory 608 and a communication module 609, the memory 608 and the communication module 609 are electrically connected with the processor 607, the two stainless steel conductive rods 604 and the processor 607 are electrically connected with the power module 606, the outer surface of the protection box 605 is provided with a data interface 610 which is electrically connected with the processor 607, and the outer surface of the protection box 605 is provided with a charging port 611 which is electrically connected with the power module 606.

[0032] It should be noted that the processor 607 can be selected from a high-performance ARM Cortex-M series microcontroller, which has strong computing power and low power consumption characteristics, the memory 608 is used for storing program code and historical data, and can be selected from NORFlash or NAND Flash, the data interface 610 adopts a standard RS485 interface, supports communication with other devices, the communication module 609 adopts a 485 bus protocol, supports long-distance data transmission, the power module 606 adopts a 12V direct-current power supply, is provided with a built-in battery protection circuit, prevents overcharging and overdischarging, and the formula for calculating the liquid level is L = (C - C0) / K, wherein L is the liquid level height, C is the current capacitance, C0 is the initial capacitance in the air state, and K is a calibration coefficient. When the liquid level in the material storage tank body 1 gradually rises and the liquid enters between the two stainless steel conductive rods 604, the capacitance changes, and the processor 607 calculates the liquid level height according to the change. In addition, before use, the initial capacitance C0 should be tested by power-on.

[0033] Please refer to Figure 2 , Figure 3 and Figure 4The upper surface of the protection box 605 is provided with a detachable protective cover 612, and the upper surface of the protective cover 612 is provided with a folding handle 613. The detachable protective cover 612 can facilitate regular maintenance of the electrical elements in the protection box 605. The folding handle 613 can enable the staff to carry the liquid level detection mechanism 6, so that the liquid level detection mechanism 6 is portable. The outer surface of the protection box 605 is provided with a plurality of ventilation openings 614, each of which is inclined upward. The ventilation openings 614 can ensure that the interior of the protection box 605 can be normally ventilated, so as to avoid overheating in the interior of the protection box 605.

[0034] Please refer to Figure 1 and Figure 2 The top of the top cover 2 is provided with a material injection port 7, and the top of the material injection port 7 is provided with a sealing plug. The material injection port 7 can facilitate the addition of the material to be stored into the interior of the material storage tank body 1. The bottom of the material storage tank body 1 is provided with a material discharge port 8, and the interior of the material discharge port 8 is provided with a valve. The material discharge port 8 can facilitate the discharge of the material stored in the interior of the material storage tank body 1 to the outside. The four corners of the bottom surface of the material storage tank body 1 are fixedly connected with support columns 9. The support columns 9 can enable the device to be more stably placed on the ground, and facilitate the stable storage of the material.

[0035] In the embodiment, the liquid level detection device for the material storage tank can realize high measurement accuracy and stability, is suitable for the detection of various media, and is more practical. When measuring, the two stainless steel conductive rods 604 are vertically inserted into the interior of the material storage tank body 1, and the power supply module 606 provides power for the stainless steel conductive rods 604. When the liquid level of the material storage tank body 1 rises, the liquid will gradually cover the area between the two stainless steel conductive rods 604, so that the capacitance increases. The processor 607 calculates the height of the current liquid level by detecting the change of the capacitance, and the calculation formula is L = (C - C0) / K. The processor 607 transmits the calculated liquid level value to the upper computer through the communication module 609, realizes remote monitoring, the rubber pad 603 can reduce the measurement instability caused by vibration, the material of the stainless steel conductive rod 604 has good corrosion resistance, can be used in various corrosive environments for a long time, and can reduce the influence of liquid fluctuation on detection accuracy, and is more practical.

[0036] The working principle of the above embodiment is that the aluminum alloy support 601 is installed on the top of the top cover 2 through the connecting ring 602, the rubber pad 603, the connecting seat 3, the connecting bolt 4 and the nut 5, the rubber pad 603 can reduce the measurement instability caused by vibration, then the power module 606 is powered on to the two stainless steel conductive rods 604, when the liquid level of the material storage tank body 1 rises, the liquid will gradually cover the area between the two stainless steel conductive rods 604, so that the capacitance increases, the processor 607 can calculate the height of the current liquid level by detecting the change of the capacitance, the calculation formula is L = (C - C0) / K, the power module 606 transmits the calculated liquid level value to the upper computer through the communication module 609, realizes remote monitoring, and because of the material and the liquid level measurement mode of gradually immersing the stainless steel conductive rod 604 by the liquid material, the device has high measurement accuracy and stability, and is suitable for detection of various media.

[0037] It should be noted that, in this document, the terms "first", "second", and so on are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0038] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A liquid level detecting device for a material storage tank, comprising a material storage tank body (1), a top cover (2) and a liquid level detecting mechanism (6), characterized in that: The liquid level detection mechanism (6) comprises an aluminum alloy support (601), a connecting ring (602) fixedly connected to the outer surface of the aluminum alloy support (601), and a rubber pad (603) fixedly connected to the bottom surface of the connecting ring (602), two stainless steel conductive rods (604) are vertically installed at the bottom of the aluminum alloy support (601), a protection box (605) is fixedly connected to the top of the aluminum alloy support (601), a power module (606), a processor (607), a memory (608), and a communication module (609) are installed on the inner wall of the protection box (605), the memory (608) and the communication module (609) are electrically connected to the processor (607), the two stainless steel conductive rods (604) and the processor (607) are electrically connected to the power module (606), a data interface (610) is installed on the outer surface of the protection box (605) and is electrically connected to the processor (607), and a charging port (611) electrically connected to the power module (606) is installed on the outer surface of the protection box (605).

2. The liquid level detecting device for a material storage tank according to claim 1, characterized by: The top cover (2) is installed on the top of the material storage tank body (1) through bolts, a connecting seat (3) is fixedly connected to the upper surface of the top cover (2), a plurality of connecting bolts (4) are fixedly connected to the upper surface of the connecting seat (3), and a nut (5) is threadedly connected to the outer surface of each connecting bolt (4).

3. The liquid level detecting device for a material storage tank according to claim 2, characterized by: The connecting ring (602) and the rubber pad (603) are matched with the connecting seat (3), and the aluminum alloy support (601) is installed on the top of the top cover (2) through the connecting ring (602), the rubber pad (603), the connecting seat (3), the connecting bolt (4), and the nut (5).

4. The liquid level detecting device for a material storage tank according to claim 1, characterized by: A detachable protection cover (612) is installed on the upper surface of the protection box (605), and a folding handle (613) is installed on the upper surface of the protection cover (612).

5. The liquid level detecting device for a material storage tank according to claim 1, characterized by: A plurality of ventilation holes (614) are formed in the outer surface of the protection box (605), and each ventilation hole (614) is obliquely upward.

6. The liquid level detecting device for a material storage tank according to claim 1, characterized by: A material injection port (7) is installed on the top of the top cover (2), and a sealing plug is arranged on the top of the material injection port (7).

7. The liquid level detecting device for a material storage tank according to claim 1, characterized by: A material discharge port (8) is installed at the bottom of the material storage tank body (1), and a valve is installed in the material discharge port (8).

8. The liquid level detecting device for a material storage tank according to claim 1, characterized by: Supports (9) are fixedly connected to the four corners of the bottom surface of the material storage tank body (1).

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