A glass plate type liquid level gauge

Abstract

The utility model discloses a glass plate formula liquid level meter relates to liquid level measurement technical field, including first metal frame, second metal frame, glass plate, a plurality of joints, proximity switch. First metal frame and second metal frame are fixedly connected through a plurality of bolt nut parts, a plurality of joints are all located first metal frame outside, are used for connecting the container of being measured, the opposite inboard of first metal frame and second metal frame is equipped with first groove and second groove respectively, and the glass plate is installed in second groove and a part of first groove, and the remaining part of first groove forms the liquid storage tank, and the liquid storage tank is linked together with a plurality of joints, and the outside of second metal frame is equipped with window, is used to expose the glass plate, the proximity switch is located first metal frame outside, and the proximity switch selects inductance type, capacitance type, photoelectric type one, is used to obtain the liquid level signal in liquid storage tank. The scheme can directly and simply measure the liquid level height in container.

Description

Technical Field

[0001] This utility model relates to the field of liquid level measurement technology, and in particular to a glass plate type liquid level gauge. Background Technology

[0002] Existing liquid level measurement technologies suffer from the following significant drawbacks in industrial applications, which severely impact monitoring efficiency and user experience:

[0003] ① Data acquisition complexity issues: Most traditional level gauges (such as radar and ultrasonic types) require matching signal converters and dedicated display terminals; the data output formats are not uniform, often requiring secondary conversion before they can be connected to the control system; the lack of standardized interfaces makes integration with existing DCS / SCADA systems difficult;

[0004] ② Real-time issues: Mechanical level gauges (float type, hydrostatic type) have obvious response lag; the sampling period is long, usually >30 seconds, making it difficult to capture rapid level fluctuations; the data refresh rate is low, which cannot meet the monitoring needs of highly dynamic processes;

[0005] ③ Installation and maintenance issues: Installation usually requires process shutdown and drilling operations, such as guided wave radar which requires a ≥DN80 interface; regular maintenance requirements are high, such as capacitive type which requires quarterly calibration and float type which requires cleaning every six months;

[0006] ④ Economic drawbacks: The cost of a single high-precision model can reach 20,000 to 50,000 yuan; the overall installation cost often exceeds the cost of the equipment itself; and the maintenance costs during its life cycle are relatively high.

[0007] ⑤ Insufficient adaptability: There are few models available for extreme working conditions; the reliability of multiphase flow medium measurement is poor; it cannot be compatible with continuous measurement under severe fluctuations or turbulent conditions. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a glass plate level gauge that can intuitively and easily measure the liquid level in a container.

[0009] In order to achieve the purpose of this utility model, the following solution is proposed:

[0010] A glass plate level gauge includes a first metal frame, a second metal frame, a glass plate, multiple connectors, and a proximity switch.

[0011] The first metal frame and the second metal frame are fixedly connected by a number of bolts and nuts.

[0012] Multiple connectors are located on the outside of the first metal frame for connecting the container under test;

[0013] The inner sides of the first metal frame and the second metal frame are respectively provided with a first groove and a second groove. The glass plate is installed in the second groove and a part of the first groove. The remaining part of the first groove forms a liquid storage tank, and the liquid storage tank is connected to multiple connectors. The outer side of the second metal frame is provided with a window to expose the glass plate.

[0014] The proximity switch is located on the outside of the first metal frame. The proximity switch is selected from inductive, capacitive, and photoelectric types and is used to obtain the liquid level signal in the storage tank.

[0015] Furthermore, the first and second metal frames are made of carbon steel or stainless steel.

[0016] Furthermore, both the first and second metal frames are provided with two rows of through holes, and the glass plate is located between the two rows of through holes in the second metal frame.

[0017] Furthermore, a nameplate area is provided on the outer side of the second metal frame for installing nameplates.

[0018] Furthermore, the glass plate has graduated markings.

[0019] Furthermore, the connector is a reducing type, and the outer end of the connector is provided with internal threads.

[0020] Furthermore, the connector is equipped with a needle valve, which contains a safety steel ball. When the glass plate breaks accidentally, the steel ball will automatically seal the channel under the pressure inside the container being tested.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. Intuitive liquid level display: The actual height of the liquid level in the container can be directly observed through a transparent glass plate without the need for complicated equipment or conversion. Operators can obtain liquid level information in real time and accurately. It is suitable for scenarios where the requirements for liquid level monitoring are not high but intuitive readings are required.

[0023] 2. Simplified design based on the principle of communicating vessels: By utilizing the principle of communicating vessels, the level gauge keeps the liquid level in the container consistent with the liquid level. The structure is simple, the cost is low, and it is easy to install and maintain, making it suitable for wide application in various industrial environments.

[0024] 3. Safety protection function: The valve has a built-in safety steel ball. When the glass plate breaks accidentally, the steel ball will automatically seal the channel under the pressure inside the container to prevent liquid leakage and ensure the safety of personnel and equipment.

[0025] 4. Assisting other measurement methods: As a basic liquid level measurement tool, it can be used in conjunction with other advanced liquid level measurement instruments (such as magnetic float liquid level gauges, pressure liquid level gauges, etc.). When other instruments malfunction or the data is abnormal, the liquid level gauge can serve as a backup monitoring method to ensure the continuity and safety of the production process. Attached Figure Description

[0026] Figure 1 A front view of a glass plate level gauge is shown.

[0027] Figure 2 A rear view of the glass plate level gauge is shown.

[0028] Figure 3 A longitudinal sectional view of a glass plate level gauge is shown. Detailed Implementation

[0029] like Figure 1 , Figure 2 As shown, this embodiment provides a glass plate level gauge, including a first metal frame 11, a second metal frame 12, a glass plate 2, two connectors 3, and a proximity switch 4.

[0030] Specifically, the first metal frame 11 and the second metal frame 12 are made of carbon steel or stainless steel, depending on the different usage environments and requirements. Both the first metal frame 11 and the second metal frame 12 have two rows of through holes, with a bolt and nut fitting installed in each corresponding through hole. The first metal frame 11 and the second metal frame 12 are fixedly connected by multiple bolts and nuts. A nameplate area 123 is provided on the outer side of the second metal frame 12 for mounting a nameplate.

[0031] The advantages and features of nameplates are mainly reflected in the following aspects:

[0032] The product information label usually indicates key parameters such as the product model, specifications, material, pressure rating, and temperature range, which helps users quickly understand the performance and applicable conditions of the level gauge and avoid misselection or misuse due to unclear parameters.

[0033] Facilitating the maintenance and management of nameplate information helps technicians quickly locate product models and find corresponding repair manuals and technical documents during maintenance and repair, improving maintenance efficiency. Furthermore, the information on the nameplate is also an important reference for the periodic calibration and safety checks of the equipment.

[0034] The nameplates of products that meet safety standards may include safety warning signs or certification marks, such as explosion-proof ratings or pressure vessel certifications, indicating that the product complies with relevant safety standards. This enhances users' trust in the product's safety and also facilitates safety inspections and supervision by regulatory authorities.

[0035] The production date, batch number, and other information on the traceability and quality assurance nameplate can be used for product quality traceability. In the event of a quality problem, this information can be used to quickly locate the production batch, find the cause, and take corresponding corrective measures to ensure product quality and protect user rights. The nameplate may also indicate installation precautions and environmental requirements to help users correctly install and use the level gauge, reducing malfunctions and safety hazards caused by improper installation or incompatible environments.

[0036] Specifically, such as Figure 3 As shown, both connectors 3 are located on the outside of the first metal frame 11, and connectors 3 are used to connect the container being tested. Connectors 3 are of the reducing type, and the outer end of connector 3 is provided with internal threads.

[0037] Connector 3 has the following features and advantages:

[0038] ① Ease of connection: The internal thread design allows for direct threaded connection with other pipes or fittings with external threads, eliminating the need for complex welding or glue fixation. This makes installation and disassembly more convenient, especially suitable for piping systems that require frequent maintenance or replacement.

[0039] ② Sealing performance: The connector 3 and the first metal frame 11 are seamlessly connected by high-temperature welding technology. Combined with the tight fit of the internal thread, leakage can be effectively prevented and the sealing performance of the pipeline system can be ensured. It is suitable for scenarios with extremely high requirements for leakage risk, such as the transmission of high-purity fluids in the chemical and semiconductor industries.

[0040] ③ Flexible installation adaptability: It can adapt to different pipe diameters and connect pipes of different diameters to meet the needs of pipe diameter changes in the system. It is corrosion resistant and high temperature resistant. If high-performance materials such as perfluoroalkoxy resin are used, the connector 3 can withstand a variety of corrosive media and high temperature environments, and is suitable for harsh working conditions in chemical, pharmaceutical and food industries.

[0041] ④ Stability and Reliability: The welded structure enhances the strength and stability of joint 3, making it less prone to loosening or damage. This ensures the safe operation of the piping system during long-term use and reduces maintenance costs. Its flexible installation adaptability allows for flexible operation in confined spaces or dense piping layouts, making it suitable for complex installation environments.

[0042] Specifically, such as Figure 3As shown, the inner sides of the first metal frame 11 and the second metal frame 12 are respectively provided with a first groove 111 and a second groove 121. The second groove 121 is located between two rows of through holes in the second metal frame 12. The second groove 121 and a portion of the first groove 111 form an assembly groove, in which the glass plate 2 is installed. The remaining portion of the first groove 111 forms a liquid storage tank, which is connected to two connectors 3. The outer side of the second metal frame 12 is provided with a window 122, which is connected to the second groove 121 and is used to expose the glass plate 2. The function of the second metal frame 12 is to fix the glass plate 2 and provide support and protection for it.

[0043] The level gauge provided in this embodiment is designed based on the principle of communicating vessels. The liquid storage tank is connected to the container being measured via connector 3 to form a communicating vessel. The liquid level observed through the glass plate 2 is the same as the liquid level in the container being measured, i.e., the liquid level height. The glass plate 2 is provided with scale values ​​for a more intuitive view of the liquid level height in the storage tank.

[0044] Glass plate 2 is typically made of transparent flat glass and is embedded within the second metal frame 12. The material of glass plate 2 needs to have appropriate chemical and thermal stability, good mechanical strength, a small coefficient of expansion, and is generally colorless and transparent or slightly yellowish or light green.

[0045] Specifically, such as Figure 3 As shown, the proximity switch 4 is located outside the first metal frame 11. The proximity switch 4 is selected from inductive, capacitive, and photoelectric types and is used to obtain the liquid level signal in the storage tank.

[0046] The addition of proximity switch 4 to the level gauge provides the following advantages:

[0047] ① The proximity switch 4 achieves non-contact detection through electromagnetic induction, capacitance change, or photoelectric principles, avoiding the wear and damage of traditional mechanical contacts. It is particularly suitable for measuring high-precision, fragile, or corrosive media. The proximity switch 4 improves measurement accuracy and response speed, enabling rapid response to liquid level changes and providing more accurate liquid level signals. It can achieve high-frequency liquid level monitoring, meeting the needs of automated control. For example, the inductive proximity switch 4 can achieve millimeter-level accuracy in detecting metal liquid levels.

[0048] ② The proximity switch 4 enhances safety and reliability, and can promptly issue an alarm signal when the liquid level is abnormal, enabling remote monitoring and automatic control and reducing the risk of manual intervention.

[0049] ③ The capacitive proximity switch 4 can adapt to complex working conditions and detect non-metallic liquids or solids, thus broadening the application range of the level gauge.

[0050] ④ The photoelectric proximity switch 4 is not affected by the color and transparency of the medium and is suitable for measuring turbid or colored liquids.

[0051] ⑤ Easy to integrate and maintain, proximity switch 4 can be directly connected to control systems such as PLC and DCS to realize remote data transmission and centralized management.

[0052] In summary, the addition of proximity switch 4 to the level gauge not only retains the advantage of intuitive level display but also significantly improves the reliability and adaptability of the measurement through non-contact measurement, high-precision response, and intelligent control, making it suitable for scenarios with a high degree of industrial automation. It should be noted that proximity switch 4 is an existing switch, so its structure is not shown in detail in the attached diagram, and its structure and principle will not be described in detail here.

[0053] Specifically, a needle valve can be optionally installed on connector 3. The needle valve contains a safety steel ball; if glass plate 2 breaks accidentally, the steel ball will automatically seal the passage under the pressure inside the tested container. The needle valve isolates the process pipeline medium and can also be used to clean or replace glass plate 2. It should be noted that the needle valve is an existing valve, so its structure is not specifically shown in the attached diagram, and its structure and principle will not be described in detail here.

[0054] Depending on the specific application requirements, the level gauge can be equipped with additional components such as drain valves, upper and lower shut-off valves, steam jackets, anti-frost devices, and lighting devices to achieve functions such as draining, corrosion prevention, heat preservation, frost prevention, and lighting.

[0055] The level gauge provided in this embodiment has the following advantages:

[0056] ① The liquid level in the container can be directly observed through the transparent glass plate 2 without the need for complicated equipment. Operators can obtain liquid level information in real time and intuitively, which is especially suitable for scenarios that require a rapid response to changes in liquid level.

[0057] ② A proximity switch 4 has been added to the level gauge. The proximity switch 4 can convert the level signal into an electrical signal and transmit it to the control system in real time, realizing remote monitoring and automated control. For example, in industrial production, it can automatically trigger the start / stop of the pump or trigger an alarm, avoiding frequent manual inspections.

[0058] ③ Proximity switch 4 can improve measurement accuracy and reliability, accurately detect the upper and lower limits of the liquid level, and reduce human reading errors. Even if the glass plate 2 is obstructed due to dirt, steam, or other factors, proximity switch 4 can still work stably to ensure the accuracy of the liquid level data.

[0059] ④ When the liquid level exceeds the safe range, proximity switch 4 can immediately issue an alarm signal to remind operators to take measures to prevent safety accidents such as overflow or dry burning, thus enhancing safety. At the same time, proximity switch 4, combined with the safety interlock system, can automatically shut down the machine, reducing risks.

[0060] ⑤ The proximity switch 4 is not affected by the color, transparency or viscosity of the medium, and is suitable for various harsh environments, such as high temperature, high pressure, corrosive media, etc.

[0061] ⑥ Reduced maintenance costs; installation and maintenance are relatively simple, eliminating the need for frequent cleaning of glass plate 2 or replacement of parts. Long-term use can reduce repair costs and downtime caused by problems such as damage or blockage of glass plate 2.

[0062] ⑦ It has low manufacturing and installation costs, making it suitable for cost-sensitive projects, especially in low-automation or small-scale equipment.

[0063] The above embodiments are only used to illustrate the technical concept and features of this utility model, and are not intended to be unique or to limit this utility model. Those skilled in the art should understand that various changes or equivalent substitutions made to this utility model without departing from its scope are all within the protection scope of this utility model.

Claims

1. A glass plate level gauge, characterized in that, Includes a first metal frame (11), a second metal frame (12), a glass plate (2), multiple connectors (3), and a proximity switch (4); The first metal frame (11) and the second metal frame (12) are fixedly connected by a plurality of bolts and nuts; Multiple connectors (3) are located on the outside of the first metal frame (11) for connecting the container under test; The first metal frame (11) and the second metal frame (12) are respectively provided with a first groove (111) and a second groove (121) on their inner sides. The glass plate (2) is installed in the second groove (121) and a part of the first groove (111). The remaining part of the first groove (111) forms a liquid storage tank, and the liquid storage tank is connected to multiple connectors (3). The second metal frame (12) is provided with a window (122) on its outer side to expose the glass plate (2). The proximity switch (4) is located outside the first metal frame (11). The proximity switch (4) is selected from one of the following types: inductive, capacitive, and photoelectric, and is used to obtain the liquid level signal in the storage tank.

2. The glass plate level gauge according to claim 1, characterized in that, The first metal frame (11) and the second metal frame (12) are made of carbon steel or stainless steel.

3. The glass plate level gauge according to claim 1, characterized in that, The first metal frame (11) and the second metal frame (12) are each provided with two rows of through holes, and the glass plate (2) is located between the two rows of through holes of the second metal frame (12).

4. The glass plate level gauge according to claim 1, characterized in that, The outer side of the second metal frame (12) is provided with a nameplate area (123) for installing nameplates.

5. The glass plate level gauge according to claim 1, characterized in that, The glass plate (2) has scale values.

6. The glass plate level gauge according to claim 1, characterized in that, The connector (3) is a reducing type, and the outer end of the connector (3) is provided with internal thread.

7. The glass plate level gauge according to claim 1, characterized in that, The connector (3) is equipped with a needle valve. The needle valve has a built-in safety steel ball. When the glass plate (2) breaks accidentally, the steel ball will automatically close the channel under the pressure inside the container being tested.

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