Radar liquid level meter with protection mechanism

Abstract

The utility model discloses a radar liquid level meter with a protection mechanism, which comprises a main body, a transmitting piece and the protection mechanism, and is characterized in that the transmitting piece is arranged on the main body; the protection mechanism comprises a protection cover, a fixing disc, a communication hole, a plurality of first air outlet holes, a plurality of second air outlet holes, an interconnection groove, an air blower, an air supply pipe and a sealing part, and the protection cover is installed on the launching part; the fixed disc is fixedly mounted in the protective cover; the communicating hole is formed in the fixing disc and penetrates through the two sides of the fixing disc; the multiple first air outlet holes are formed in the bottom face of the fixing disc. Therefore, air is blown into the interconnection groove through the air blower, then one part of air blows downwards to blow away water vapor and hot air below the transmitting piece, the other part of air forms an air wall in the communicating hole to block the water vapor and the hot air, the influence of the water vapor and the hot air on the transmitting piece is reduced, and the measurement precision of the radar liquid level meter is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of radar level gauges, and in particular to a radar level gauge with a protective mechanism. Background Technology

[0002] Radar level gauges are general-purpose radar level gauges. They are measuring instruments based on the time-of-flight principle. Radar waves travel at the speed of light, and the travel time can be converted into a level signal by electronic components. The probe emits high-frequency pulses that propagate through space at the speed of light. When the pulses encounter the material surface, they are reflected back and received by the receiver inside the instrument, which converts the distance signal into a level signal.

[0003] In existing applications of radar level gauges, especially in high-temperature and high-humidity environments (such as oil refineries and chemical plants), the following challenges are often encountered:

[0004] On the one hand, there is interference from water vapor and hot air. When the liquid temperature in the storage tank is high or there is a large amount of evaporation, the generated water vapor and hot air will flow upward and accumulate near the transmitting antenna of the radar level gauge. The steam will not only affect the quality of signal transmission, but may also cause measurement errors, reducing the reliability and accuracy of the equipment.

[0005] On the other hand, condensation occurs. Due to the large temperature difference, the external temperature of the radar level gauge is low, which can easily cause condensation on the surface of internal components, thereby affecting the working performance of electronic components and potentially causing short circuit faults. Utility Model Content

[0006] This utility model aims to at least partially solve one of the technical problems in the related art.

[0007] Therefore, the purpose of this utility model is to propose a radar level gauge with a protective mechanism, which reduces the direct impact of water vapor and hot air on the transmitting antenna through air barriers and air flow, ensuring a good propagation environment for radar waves and improving the accuracy and stability of measurement data.

[0008] To achieve the above objectives, this utility model proposes a radar level gauge with a protective mechanism, comprising a main body, a transmitter, and a protective mechanism. The transmitter is mounted on the main body. The protective mechanism includes a protective cover, a fixed plate, a connecting hole, multiple first vents, multiple second vents, an interconnecting groove, a blower, an air supply pipe, and a sealing component. The protective cover is mounted on the transmitter. The fixed plate is fixedly mounted inside the protective cover. The connecting hole is located inside the fixed plate and extends through both sides of the fixed plate. Multiple first vents are located on the bottom surface of the fixed plate. Multiple second vents are located on the fixed plate and are situated within the connecting hole. The interconnecting groove is located inside the fixed plate and communicates with the multiple first and second vents. The blower is mounted on the protective cover. One end of the air supply pipe is connected to the blowing end of the blower, and the other end is connected to the fixed plate, communicating with the interconnecting groove. The sealing component is mounted on the fixed plate.

[0009] In addition, the radar level gauge with a protective mechanism proposed in the application may also have the following additional technical features:

[0010] Specifically, the diameter of the connecting hole is larger than the diameter of the transmitting element.

[0011] Specifically, the sealing component includes a mounting plate, an electric telescopic rod, a sealing disc, an elastic plate, and a trigger switch. The mounting plate is mounted on the fixed disc; the electric telescopic rod is mounted on the mounting plate; the sealing disc is mounted on the output end of the electric telescopic rod and is slidably connected to the fixed disc; the elastic plate is mounted on the fixed disc; and the trigger switch is mounted on the fixed disc, with one end of the elastic plate in contact with the trigger switch.

[0012] Specifically, the elastic plate is located below the corresponding first air outlet.

[0013] The radar level gauge with a protective mechanism of this utility model blows air into the interconnecting groove through a blower. Then, part of the air is blown downward to disperse the water vapor and hot air below the transmitter, while the other part forms an air wall in the connecting hole to block the water vapor and hot air, thereby reducing the impact of water vapor and hot air on the transmitter and improving the measurement accuracy of the radar level gauge.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 This is a schematic diagram of a radar level gauge with a protective mechanism according to an embodiment of the present invention;

[0017] Figure 2 This is a perspective view of the main body of one embodiment of the present utility model;

[0018] Figure 3 This is a bottom view of the fixing plate according to an embodiment of the present invention;

[0019] Figure 4 This is a top view of the fixing plate according to an embodiment of the present invention.

[0020] As shown in the figure: 1. Main body; 2. Launching component; 3. Protective mechanism; 31. Protective cover; 32. Fixing plate; 33. Connecting hole; 34. First air outlet; 35. Second air outlet; 36. Interconnecting groove; 37. Blower; 38. Air supply pipe; 39. Sealing component; 391. Mounting plate; 392. Electric telescopic rod; 393. Sealing plate; 394. Elastic plate; 395. Trigger switch. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0022] The radar level gauge with a protective mechanism according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0023] like Figures 1-4 As shown, the radar level gauge with a protective mechanism according to an embodiment of the present invention includes a main body 1, a transmitter 2, and a protective mechanism 3, wherein the transmitter 2 is disposed on the main body 1. The protective mechanism 3 includes a protective cover 31, a fixing plate 32, a connecting hole 33, a plurality of first vent holes 34, a plurality of second vent holes 35, an interconnecting groove 36, a blower 37, an air supply pipe 38, and a sealing component 39, wherein the protective cover 31 is mounted on the transmitter 2.

[0024] It should be noted that the exhaust end of the hair dryer 37 is equipped with a filter, which can filter out floating objects in the extracted air and prevent floating particles from adhering to the emitter 2.

[0025] The fixed plate 32 is fixedly installed inside the protective cover 31. The connecting hole 33 is opened inside the fixed plate 32 and extends through both sides of the fixed plate 32. Multiple first vent holes 34 are opened on the bottom surface of the fixed plate 32. Multiple second vent holes 35 are opened on the fixed plate 32 and are located inside the connecting hole 33.

[0026] It should be noted that the air discharged from the first air outlet 34 and the second air outlet 35 will enter the protective cover 31, increasing the air pressure inside the protective cover 31, thereby causing the air inside the protective cover 31 to flow downwards, which can also achieve the purpose of blocking water vapor and hot air.

[0027] An interconnecting groove 36 is formed within the fixed plate 32 and communicates with multiple first air outlets 34 and multiple second air outlets 35. A blower 37 is mounted on the protective cover 31. One end of an air supply pipe 38 is connected to the blowing end of the blower 37, and the other end of the air supply pipe 38 is connected to the fixed plate 32, communicating with the interconnecting groove 36. A sealing component 39 is provided on the fixed plate 32.

[0028] Specifically, in actual use, water vapor generated by the liquid will adhere to the transmitter 2, which may affect the measurement accuracy of the radar level gauge.

[0029] In use, the blower 37 is controlled by the control switch. When the blower 37 is running, it blows air into the interconnecting groove 36 through the air supply pipe 38. The air entering the interconnecting groove 36 is discharged through multiple first air outlets 34 and multiple second air outlets 35. The air discharged through the multiple first air outlets 34 flows downward and can blow away the water vapor and hot air below the protective cover 31. The air discharged through the multiple second air outlets 35 can form an air wall in the connecting hole 33 to block the water vapor and hot air and reduce the amount of contact between the water vapor and hot air and the emitter 2.

[0030] Air is blown into the interconnecting groove 36 by the blower 37, and then some of the air is blown downward to disperse the water vapor and hot air below the transmitter 2. The other part forms an air wall in the connecting hole 33 to block the water vapor and hot air, thereby reducing the impact of water vapor and hot air on the transmitter 2 and improving the measurement accuracy of the radar level gauge.

[0031] In one embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the diameter of the connecting hole 33 is larger than the diameter of the launching element 2.

[0032] It should be noted that the connecting hole 33 is larger than the diameter of the transmitter 2 to prevent the fixed plate 32 from blocking the working area of ​​the transmitter 2 and affecting the normal operation of the transmitter 2.

[0033] In one embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the sealing component 39 includes a mounting plate 391, an electric telescopic rod 392, a sealing disc 393, an elastic plate 394, and a trigger switch 395. The mounting plate 391 is mounted on the fixed disc 32, and the electric telescopic rod 392 is mounted on the mounting plate 391.

[0034] It should be noted that the electric telescopic rod 392 is controlled by the trigger switch 395. When the elastic plate 394 is in contact with the trigger switch 395, the electric telescopic rod 392 is in the extended state. When the elastic plate 394 is no longer in contact with the trigger switch 395, the electric telescopic rod 392 is in the telescopic state.

[0035] The sealing disc 393 is installed at the output end of the electric telescopic rod 392, and the sealing disc 393 is slidably connected to the fixed disc 32. The elastic plate 394 is installed on the fixed disc 32.

[0036] It should be noted that the elastic plate 394 has a certain degree of plasticity, and can be reset again after the external force is removed.

[0037] The trigger switch 395 is mounted on the fixed plate 32, and one end of the elastic plate 394 is in contact with the trigger switch 395.

[0038] Specifically, to prevent water droplets from adhering to the transmitter 2 when the radar level gauge is not in use, the transmitter 2 needs to be sealed.

[0039] During use, the air blown out of the first air outlet 34 blows the elastic plate 394, causing the elastic plate 394 to no longer contact the trigger switch 395. At this time, the trigger switch 395 controls the output end of the electric telescopic rod 392 to retract, which in turn drives the sealing disc 393 to stop sealing the connecting hole 33, ensuring the normal use of the radar level gauge. When the instrument is no longer in use, the blower 37 stops running, and the air no longer blows the elastic plate 394. Under the action of plasticity, the elastic plate 394 contacts the trigger switch 395 again, which causes the electric telescopic rod 392 to extend and reset, driving the sealing disc 393 to seal the connecting hole 33.

[0040] In one embodiment of this utility model, such as Figure 3 As shown, the elastic plate 394 is located below the corresponding first vent 34.

[0041] It should be noted that when air is discharged from the first vent 34, the air will blow on the elastic plate 394, thereby causing one end of the elastic plate 394 to no longer be in contact with the trigger switch 395.

[0042] In summary, the radar level gauge with a protective mechanism of this utility model uses a blower 37 to blow air into the interconnecting groove 36. Part of the air is blown downwards to disperse the water vapor and hot air below the transmitter 2, while the other part forms an air wall in the connecting hole 33 to block the water vapor and hot air, thereby reducing the impact of water vapor and hot air on the transmitter 2 and improving the measurement accuracy of the radar level gauge.

[0043] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A radar level gauge with a protection mechanism, characterized in that The utility model relates to a hair dryer, including main body, hair dryer and protection mechanism, The hair dryer is arranged on the main body; The protection mechanism includes protection cover, fixed disc, communication hole, a plurality of first air outlet, a plurality of second air outlet, interconnection groove, hair dryer, air supply pipe and sealing part, The protection cover is installed on the hair dryer; The fixed disc is fixedly installed in the protection cover; The communication hole is arranged in the fixed disc, and the communication hole penetrates two sides of the fixed disc; A plurality of first air outlets are arranged on the bottom surface of the fixed disc; A plurality of second air outlets are arranged on the fixed disc, and a plurality of second air outlets are located in the communication hole; The interconnection groove is arranged in the fixed disc, and the interconnection groove is communicated with a plurality of first air outlets and a plurality of second air outlets; The hair dryer is installed on the protection cover; One end of the air supply pipe is connected with the blowing end of the hair dryer, and the other end of the air supply pipe is connected with the fixed disc, and the air supply pipe is communicated with the interconnection groove; The sealing part is arranged on the fixed disc.

2. The radar level gauge with a protection mechanism according to claim 1, characterized in that, The caliber of the communication hole is greater than the caliber of the hair dryer.

3. The radar level gauge with a protection mechanism according to claim 1, characterized in that, The sealing part includes mounting plate, electric telescopic rod, sealing disc, elastic plate and trigger switch, The mounting plate is installed on the fixed disc; The electric telescopic rod is installed on the mounting plate; The sealing disc is installed on the output end of the electric telescopic rod, and the sealing disc is slidably connected with the fixed disc; The elastic plate is installed on the fixed disc; The trigger switch is installed on the fixed disc, and one end of the elastic plate is in contact with the trigger switch.

4. The radar level gauge with a protection mechanism according to claim 3, characterized in that, The elastic plate is located below the corresponding first air outlet.

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