Radar level gage device of raw coal bunker

Abstract

The utility model discloses a raw coal bunker radar level gage device which comprises a protective cover, a shell and a protective sleeve connected to the bottom of the shell, and further comprises a measuring mechanism, the measuring mechanism is arranged in the shell, an electronic bin is installed on the inner wall of the shell, a display screen is connected to the outer wall of the top of the electronic bin, and the display screen is connected with the electronic bin. An antenna is connected to the outer wall of the bottom of the electronic bin, a connecting plate is connected to the outer wall of the bottom of the protective sleeve, and a universal joint is fixed to the outer wall of the bottom of the connecting plate. And the purging mechanism is arranged in the universal joint. The raw coal bunker radar level gage device has the advantages of improving reliability and accuracy of raw coal bunker level measurement.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to a radar level meter device for a raw coal bunker. Background Art

[0002] At present, the most stable and reliable material measurement method for raw coal bunkers is manual measurement using ropes and weights. However, due to the extremely harsh working conditions and high risk, it is not suitable for manual operation. With the development of science and technology in recent years, continuous measurement methods such as rotary resistance, tuning fork, radio frequency admittance, weight, ultrasonic, and radar have appeared one after another. However, there are not many methods that can ultimately meet the harsh working conditions of raw coal bunkers. After multiple investigations, the application effect of radar level meters is relatively ideal.

[0003] The patent document with application number 202322754148.1 discloses a radar level meter measuring instrument, including a radar level meter measuring instrument body, one side of the radar level meter measuring instrument body is connected to a mounting block, and one end of the mounting block is provided with an adjustment mechanism. The radar level meter measuring instrument can be connected to the mounting position by a screw passing through the bracket, and the screw can be rotated by the torsion block, and the relative position between the screw and the nut can be changed.

[0004] The raw coal silo of the water-coal slurry plant is a solid material silo. The on-site working conditions are dusty, and coal powder, fly ash, cement, mineral powder, etc. float in the air. The boundary point is unclear, resulting in complex radar wave reflection signals, making it difficult to accurately identify the material surface, thus causing inaccurate measurement. Utility Model Content

[0005] The utility model discloses a raw coal bunker radar level meter device, which aims to solve the technical problem that the raw coal bunker of a water-coal slurry plant is a solid bunker, the on-site working conditions are dusty, coal powder, fly ash, cement, mineral powder, etc. float and diffuse in the air, and the boundary point is unclear, resulting in complex radar wave reflection signals, making it difficult to accurately identify the material surface, thereby causing inaccurate measurement.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A raw coal bunker radar level meter device comprises a protective cover, a shell and a protective sleeve connected to the bottom of the shell, and also comprises:

[0008] Measuring mechanism: the measuring mechanism is arranged inside the shell, an electronic compartment is installed on the inner wall of the shell, a display screen is connected to the top outer wall of the electronic compartment, an antenna is connected to the bottom outer wall of the electronic compartment, a connecting plate is connected to the bottom outer wall of the protective cover, and a universal joint is fixed to the bottom outer wall of the connecting plate;

[0009] Purge mechanism: The purge mechanism is arranged inside the universal joint.

[0010] In this case, the core control unit of the radar level meter is integrated inside the electronic warehouse, which is responsible for the operation control and signal processing of the entire equipment. The electronic warehouse receives the radar wave signals emitted and reflected by the antenna, amplifies, filters, demodulates and processes these signals to extract effective material level information, and displays the measurement data in real time on the display screen. The radar level meter uses the special properties of electromagnetic waves to measure the material level. The physical properties of electromagnetic waves are similar to those of visible light, and the propagation speed is equivalent to the speed of light. Its frequency is MHz-GHz. Electromagnetic waves can penetrate steam, dust, etc. in the space to avoid being interfered by them. They are easy to reflect when encountering obstacles. The better the conductivity of the measured medium or the larger the dielectric constant, the better the effect of the echo signal. The higher the frequency of the radar wave, the smaller the emission angle, the greater the magnetic flux or constant strength per unit area, the smaller the wave attenuation, and the better the measurement effect of the radar level meter. The measurement mechanism solves the problem of dust interference during measurement and improves the reliability and accuracy of the raw coal bin material level measurement.

[0011] In a preferred embodiment, the purge mechanism includes an air inlet, which is arranged on the top outer wall of the connecting plate. A gas transmission groove is opened inside the connecting plate. A protective cover is installed on the bottom outer wall of the universal joint. Transmission holes are opened on the protective cover and the top outer wall of the universal joint.

[0012] The purge mechanism receives compressed air or other purge gas through the air inlet, and transmits it to the transmission holes on the top of the protective cover and the universal joint through the air transmission groove to purge the outer wall of the protective cover, which helps to remove dust, lumps and other impurities attached to the protective cover, avoid these impurities from interfering with the radar wave signal, reduce measurement errors, and further improve the measurement precision and accuracy.

[0013] As can be seen from the above, a raw coal bunker radar level meter device includes a protective cover, a shell and a protective cover connected to the bottom of the shell, and also includes: a measuring mechanism: the measuring mechanism is arranged inside the shell, an electronic bin is installed on the inner wall of the shell, a display screen is connected to the top outer wall of the electronic bin, an antenna is connected to the bottom outer wall of the electronic bin, a connecting plate is connected to the bottom outer wall of the protective cover, and a universal joint is fixed to the bottom outer wall of the connecting plate; a purge mechanism: the purge mechanism is arranged inside the universal joint. The raw coal bunker radar level meter device provided by the utility model has the technical effect of improving the reliability and accuracy of raw coal bunker level measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of a radar level meter device for a raw coal bunker.

[0015] Figure 2 The utility model is a front view of the overall structure of a radar level meter device for a raw coal bunker.

[0016] Figure 3 The utility model is a schematic diagram of the development of a radar level meter device for a raw coal bunker.

[0017] Figure 4 The utility model is a partial schematic diagram of a radar level meter device for a raw coal bunker.

[0018] In the attached figure: 1. Protective cover; 2. Shell; 3. Electrical port; 4. Protective cover; 5. Connecting plate; 6. Universal joint; 7. Air port; 8. Fixing plate; 10. Flange; 11. Protective cover; 12. Display screen; 13. Electronic compartment; 14. Mounting hole; 15. Antenna; 16. Air trough; 17. Transmission hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application usually described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0020] The utility model discloses a raw coal bunker radar level meter device which is mainly used in water-coal slurry plants where the raw coal bunker is a solid material bunker. The on-site working conditions are dusty, and coal powder, fly ash, cement, mineral powder, etc. float in the air with unclear boundary points, resulting in complex radar wave reflection signals and difficulty in accurately identifying the material surface, thus causing inaccurate measurements.

[0021] Reference Figure 1 , Figure 2 and Figure 3 A raw coal bunker radar level meter device comprises a protective cover 1, a shell 2 and a protective cover 4 connected to the bottom of the shell 2, and also comprises:

[0022] Measuring mechanism: The measuring mechanism is arranged inside the housing 2, an electronic compartment 13 is installed on the inner wall of the housing 2, a display screen 12 is connected to the top outer wall of the electronic compartment 13, an antenna 15 is connected to the bottom outer wall of the electronic compartment 13, a connecting plate 5 is connected to the bottom outer wall of the protective cover 4, and a universal joint 6 is fixed to the bottom outer wall of the connecting plate 5;

[0023] Purge mechanism: The purge mechanism is arranged inside the universal joint 6.

[0024] The protective cover 4 , the connecting plate 5 and the top outer wall of the universal joint 6 are all provided with mounting holes 14 , the antenna 15 is installed inside the mounting hole 14 , and the outer wall of the housing 2 is provided with an electrical connection port 3 .

[0025] In this case, the core control unit of the radar level meter is integrated inside the electronic warehouse 13, which is responsible for the operation control and signal processing of the entire equipment. The electronic warehouse 13 receives the radar wave signals emitted and reflected by the antenna 15, amplifies, filters, demodulates and other processes these signals to extract effective material level information, and displays the measurement data in real time through the display screen 12. The radar level meter uses the special properties of electromagnetic waves to measure the material level. The physical properties of electromagnetic waves are similar to those of visible light, and the propagation speed is equivalent to the speed of light. Its frequency is 300MHz-3000GHz. Electromagnetic waves can penetrate steam, dust, etc. in the space to avoid being interfered by them. They are easy to reflect when encountering obstacles. The better the conductivity of the measured medium or the larger the dielectric constant, the better the effect of the echo signal. The higher the frequency of the radar wave, the smaller the emission angle, the greater the magnetic flux or constant strength per unit area, the smaller the wave attenuation, and the better the measurement effect of the radar level meter. The dust interference problem during measurement is solved through the measuring mechanism, and the reliability and accuracy of the raw coal bin material level measurement are improved.

[0026] Reference Figure 1 and Figure 2 In a preferred embodiment, a fixing plate 8 is sleeved on the outer wall of the universal joint 6, and a flange 10 is connected to the bottom outer wall of the fixing plate 8 by screws.

[0027] The design of the universal joint 6 allows the radar level meter to be flexibly adjusted in angle after installation to adapt to raw coal bunkers of different shapes, sizes and inclination angles, while the connection between the fixing plate 8 and the flange 10 further enhances this flexibility, making it easier to install the entire device on different types of raw coal bunkers.

[0028] Reference Figure 1 , Figure 3 and Figure 4 In a preferred embodiment, the purge mechanism includes an air inlet 7, which is arranged on the top outer wall of the connecting plate 5. A gas transmission groove 16 is opened inside the connecting plate 5. A protective cover 11 is installed on the bottom outer wall of the universal joint 6. A transmission hole 17 is opened on the protective cover 11 and the top outer wall of the universal joint 6.

[0029] The gas inlet 7, the gas delivery groove 16 and the transmission hole 17 are used in conjunction with each other.

[0030] The purge mechanism receives compressed air or other purge gas through the air inlet 7, and transmits it to the protection cover 11 and the transmission hole 17 on the top of the universal joint 6 through the air transmission groove 16, so as to purge the outer wall of the protection cover 11, which helps to remove dust, lumps and other impurities attached to the protection cover 11, avoid these impurities from interfering with the radar wave signal, reduce measurement errors, and further improve the measurement precision and accuracy.

[0031] Reference Figure 1 In a preferred embodiment, the protective cover 1 is mounted on the top outer wall of the housing 2 .

[0032] As a physical barrier, the protective cover 1 can effectively resist accidental impacts, collisions or falling objects from above, prevent the display screen 12 from being broken or damaged due to direct external force, and block dust, oil and other impurities from entering the interior of the display screen 12, maintain its cleanliness, and avoid the accumulation of impurities that may affect the display effect or cause faults such as short circuits.

[0033] Working principle: When in use, the core control unit of the radar level meter inside the electronic warehouse 13 transmits a micro-power microwave (radio wave with a frequency of 26Ghz) pulse of less than 1mW through the antenna 15. This pulse propagates in space at the speed of light. When the microwave pulse signal encounters the surface of the medium to be measured, part of its energy is reflected back by the surface of the medium and received by the antenna 15. The time interval from the emission to the reception of the microwave pulse signal is proportional to the distance from the antenna 15 to the surface of the medium to be measured. Therefore, based on the time from the emission to the reception of the microwave pulse signal, the distance from the antenna 15 to the surface of the medium to be measured can be calculated, and finally the measurement data can be displayed in real time through the display screen 12.

[0034] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. Equivalent replacement or change based on the technical solution of the utility model and its utility model concept should be included in the protection scope of the utility model.

Claims

1. A raw coal bunker radar level meter device, comprising a protective cover (1), a housing (2), and a protective sleeve (4) connected to the bottom of the housing (2), characterized in that: Also includes: Measuring mechanism: the measuring mechanism is arranged inside the shell (2); an electronic compartment (13) is installed on the inner wall of the shell (2); a display screen (12) is connected to the top outer wall of the electronic compartment (13); an antenna (15) is connected to the bottom outer wall of the electronic compartment (13); a connecting plate (5) is connected to the bottom outer wall of the protective cover (4); and a universal joint (6) is fixed to the bottom outer wall of the connecting plate (5); Blowing mechanism: the blowing mechanism is arranged inside the universal joint (6).

2. A raw coal bunker radar level meter device according to claim 1, characterized in that: A fixing plate (8) is sleeved on the outer wall of the universal joint (6), and a flange (10) is connected to the bottom outer wall of the fixing plate (8) via screws.

3. A raw coal bunker radar level meter device according to claim 2, characterized in that: The protective cover (4), the connecting plate (5) and the top outer wall of the universal joint (6) are all provided with mounting holes (14), and the antenna (15) is mounted inside the mounting hole (14).

4. A raw coal bunker radar level meter device according to claim 3, characterized in that: An electrical connection port (3) is provided on the outer wall of the housing (2).

5. The radar level meter device for raw coal bunker according to claim 1, characterized in that: The purge mechanism comprises an air inlet (7), the air inlet (7) being arranged on the top outer wall of the connecting plate (5), a gas transmission groove (16) being provided inside the connecting plate (5), a protective cover (11) being installed on the bottom outer wall of the universal joint (6), and transmission holes (17) being provided on both the protective cover (11) and the top outer wall of the universal joint (6).

6. A raw coal bunker radar level meter device according to claim 5, characterized in that: The air inlet (7), the air delivery groove (16) and the transmission hole (17) are used in coordination.

7. The radar level meter device for raw coal bunker according to claim 1, characterized in that: The protective cover (1) is mounted on the top outer wall of the housing (2).

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