Storage tank bottom sediment real-time monitoring system

Abstract

The embodiment of the invention provides a real-time monitoring system for sediments at the bottom of a storage tank, which comprises a signal transmitting module, at least one signal receiving module and a signal processing module, and is characterized in that the signal transmitting module is used for transmitting radar signals into the storage tank; the signal receiving module is used for receiving radar signals output after the radar signals are transmitted in the storage tank and sending the radar signals to the signal processing module; and the signal processing module is used for acquiring radar signals reflected by the tank bottom sediments according to the received radar signals, and calculating the heights of the tank bottom sediments at a plurality of positions according to the radar signals reflected by the tank bottom sediments. According to the real-time monitoring system for the sediment at the bottom of the storage tank, online real-time monitoring of the sediment at the bottom of the storage tank is achieved, the labor cost is saved, and the monitoring requirement is met.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of detection technology, and in particular to a real-time monitoring system for sediment at the bottom of a storage tank. Background Art

[0002] The presence of sediments at the bottom of finished oil tanks is the main cause of tank bottom corrosion and has always been a key factor affecting the integrity management of finished oil tanks. The components of the sediments at the bottom of finished oil tanks are complex. For example, the sediments at the bottom of diesel tanks are mostly viscous dark sediments. The sources of these sediments are mainly the following two aspects: First, the additives in the oil processing process will change the colloid index of the oil products under long-term storage, and these colloids will settle at the bottom of the oil tank; second, during the storage and transportation of oil products, moisture, impurities, etc. enter the finished oil tank with the transfer of oil products, and form mineral salts with trace sulfur and other elements in the oil products.

[0003] Existing methods for detecting sediment at the bottom of storage tanks mostly use manual measurement, which is labor-intensive and has long detection intervals, making it difficult to meet actual needs. Summary of the invention

[0004] In view of the defects in the prior art, an embodiment of the present invention provides a real-time monitoring system for sediments at the bottom of a storage tank.

[0005] An embodiment of the present invention provides a real-time monitoring system for bottom sediments of a storage tank, comprising a signal transmitting module, at least one signal receiving module and a signal processing module, wherein: the signal transmitting module is used to transmit a radar signal to the inside of a storage tank; the signal receiving module is used to receive a radar signal output after the radar signal is transmitted inside the storage tank, and send the radar signal to the signal processing module; the signal processing module is used to obtain a radar signal reflected back by the tank bottom sediment according to the received radar signal, and calculate the height of the tank bottom sediment at multiple positions according to the radar signal transmitted by the tank bottom sediment.

[0006] According to a real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention, the signal processing module is also used to: obtain cross-sectional views of the tank bottom sediments at the multiple positions based on the heights of the tank bottom sediments at the multiple positions, obtain a surface view of the tank bottom sediments by fitting the cross-sectional views of the tank bottom sediments at the multiple positions, and obtain the volume of the tank bottom sediments according to the surface view of the tank bottom sediments.

[0007] According to a real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention, the signal processing module, when used to obtain the volume of the tank bottom sediments according to the surface map of the tank bottom sediments, is specifically used to: input the surface map of the tank bottom sediments into a volume estimation model, and output the volume of the tank bottom sediments; wherein the volume estimation model is obtained through deep learning training, using the surface map of the tank bottom sediments in the training samples as input and the volume of the tank bottom sediments as output.

[0008] According to a real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention, the signal processing module, when used to obtain a radar signal reflected by the tank bottom sediments according to the received radar signal, is specifically used to: denoise the received radar signal to obtain a radar signal after noise removal; and obtain the radar signal reflected by the tank bottom sediments by performing cluster analysis on the radar signal after noise removal.

[0009] According to a real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention, the signal receiving module carries an identification of the signal receiving module when sending the radar signal to the signal processing module; when the signal processing module is used to calculate the heights of tank bottom sediments at multiple positions according to the radar signal transmitted by the tank bottom sediments, it is specifically used to: identify the radar signals sent by different signal receiving modules according to the identification of the signal receiving module, and calculate the heights of tank bottom sediments at corresponding positions according to the radar signals sent by the signal receiving modules; wherein the corresponding position is a position located by the radar signal; integrate and calculate the heights of tank bottom sediments at the same position to obtain the heights of tank bottom sediments at the corresponding position; and obtain the heights of tank bottom sediments at the multiple positions according to the heights of the tank bottom sediments at different positions.

[0010] According to a real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention, the signal processing module is used to integrate and calculate the heights of tank bottom sediments at the same position to obtain the heights of tank bottom sediments at corresponding positions. The signal processing module is specifically used to: obtain the heights of tank bottom sediments at corresponding positions by taking the average of the heights of tank bottom sediments at the same position.

[0011] According to a real-time monitoring system for bottom sediments of a storage tank provided by an embodiment of the present invention, the signal transmitting module and the at least one signal receiving module are installed in the top space of the side wall of the storage tank.

[0012] According to a real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention, the signal transmitting module and the at least one signal receiving module are at the same horizontal position; when the signal processing module is used to calculate the height of the tank bottom sediments at the corresponding position according to the radar signal sent by the signal receiving module, it is specifically used to: calculate the height of the tank bottom sediments at the corresponding position according to the distance between the signal transmitting module and the tank bottom, the air height between the signal transmitting module and the upper surface of the storage medium in the tank, the spacing between the signal transmitting module and the signal receiving module, the signal transmitting angle of the radar signal, the signal incident angle of the radar signal incident on the surface of the tank bottom sediments, the time from the signal transmitting module transmitting the radar signal to the signal receiving module receiving the radar signal, and the transmission speed of the radar signal.

[0013] According to a real-time monitoring system for bottom sediment of a storage tank provided by an embodiment of the present invention, the height of the bottom sediment of the tank at the corresponding position is obtained by solving the following set of equations simultaneously:

[0014] H=h 1 +h 2 +h 3

[0015] R=h 1 tanθ 1 +h 2 tanθ 2 +h 3 tanθ 3

[0016]

[0017] Wherein, H represents the distance between the signal transmitting module and the bottom of the tank, h 1 represents the air height between the signal transmitting module and the upper surface of the storage medium in the tank, h 2 Indicates the height of the storage medium at the corresponding position, h 3 represents the height of the tank bottom sediment at the corresponding position, R represents the distance between the signal transmitting module and the signal receiving module, θ 1 represents the signal transmission angle of the radar signal, θ 2 represents the signal incident angle of the radar signal incident on the surface of the tank bottom sediment, θ 3 represents the signal refraction angle of the radar signal incident on the surface of the tank bottom sediment, t represents the time from the signal transmitting module transmitting the radar signal to the signal receiving module receiving the radar signal, and c represents the transmission speed of the radar signal.

[0018] According to an embodiment of the present invention, a real-time monitoring system for sediment at the bottom of a storage tank is provided, the system also includes a control module, the control module is used to configure monitoring implementation data, and send the monitoring implementation data to the signal transmission module, so that the signal transmission module transmits a radar signal according to the monitoring implementation data; wherein the monitoring implementation data includes: the signal transmission angle of the radar signal, the frequency of the radar signal, the transmission power of the radar signal and the period of the signal transmission module transmitting the radar signal to the inside of the storage tank.

[0019] According to a real-time monitoring system for tank bottom sediment provided by an embodiment of the present invention, the transmission power of the radar signal is the minimum power required for the radar signal to reach the signal receiving module after being reflected by the tank bottom sediment.

[0020] According to a real-time monitoring system for sediments at the bottom of a storage tank provided by an embodiment of the present invention, the signal transmitting module and the signal receiving module are provided with explosion-proof housings.

[0021] The real-time monitoring system for bottom sediment of a storage tank provided by an embodiment of the present invention provides a signal transmitting module for transmitting a radar signal into the interior of the storage tank, provides a signal receiving module for receiving a radar signal output after the radar signal is transmitted inside the storage tank, and sends the radar signal to a signal processing module, and provides a signal processing module for acquiring a radar signal reflected back by the bottom sediment of the tank according to the received radar signal, and calculating the heights of the bottom sediment of the tank at multiple positions according to the radar signal reflected back by the bottom sediment of the tank, thereby realizing online real-time monitoring of the bottom sediment of the storage tank, saving labor costs, and meeting monitoring requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 is a structural schematic diagram of a real-time monitoring system for sediment at the bottom of a storage tank provided by an embodiment of the present invention;

[0024] Figure 2 This is one of the installation schematic diagrams of the signal transmitting module and the signal receiving module in the real-time monitoring system for the bottom sediment of the storage tank provided by the embodiment of the present invention;

[0025] Figure 3 This is the second installation schematic diagram of the signal transmitting module and the signal receiving module in the real-time monitoring system for bottom sediment of a storage tank provided by an embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the height calculation principle of tank bottom sediment in the tank bottom sediment real-time monitoring system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Figure 1 Schematic diagram of the structure of the real-time monitoring system for the bottom sediment of a storage tank provided by an embodiment of the present invention. Figure 1 As shown, the system includes a signal transmitting module 1, at least one signal receiving module 2 and a signal processing module 3, wherein: the signal transmitting module 1 is used to transmit a radar signal to the inside of the storage tank; the signal receiving module 2 is used to receive a radar signal output after the radar signal is transmitted inside the storage tank, and send the radar signal to the signal processing module; the signal processing module 3 is used to obtain a radar signal reflected back by the tank bottom sediment according to the received radar signal, and calculate the height of the tank bottom sediment at multiple positions according to the radar signal transmitted by the tank bottom sediment.

[0029] The real-time monitoring system for the bottom sediment of a storage tank provided by the embodiment of the present invention uses radar signals to detect the bottom sediment of the storage tank. An ultra-wideband radar can be used to transmit the radar signal to ensure that it can penetrate the material in the storage tank. It is understandable that as long as the radar signal can penetrate the material in the storage tank, radar signals of other bandwidths can also be used to transmit the radar signal. The real-time monitoring system for the bottom sediment of a storage tank provided by the embodiment of the present invention is suitable for storage tanks without floating plates, such as vault tanks.

[0030] The signal transmitting module 1 is used to transmit the radar signal into the storage tank; the signal receiving module 2 is used to receive the radar signal output after the radar signal is transmitted inside the storage tank, and send the radar signal to the signal processing module 3.

[0031] The signal transmitting module 1 and the signal receiving module 2 are arranged in the top space of the side wall of the storage tank. Since the storage tank is not completely filled, there is a certain amount of space left on it. The signal transmitting module 1 and the signal receiving module 2 are arranged in the top space of the side wall of the storage tank and are not in direct contact with the medium stored in the storage tank. The signal transmitting module 1 and the signal receiving module 2 are actually located inside the storage tank, so that the signal transmitting module 1 can transmit radar signals to the inside of the storage tank, and the signal receiving module 2 can receive the radar signals emitted by the signal transmitting module 1 and output signals after being transmitted in the storage tank. The signal receiving module 2 can store the received radar signals through the constructed electromagnetic wave signal library.

[0032] The signal processing module 3 can be arranged in the control center. The signal processing module 3 is used to obtain the radar signal reflected by the tank bottom sediment according to the received radar signal, and calculate the height of the tank bottom sediment at multiple positions according to the radar signal reflected by the tank bottom sediment. The radar signal reflected by the tank bottom sediment includes a signal that is directed to the tank bottom sediment and output after being reflected by the tank bottom sediment. Since the radar signal may not necessarily be directed to the tank bottom sediment, for example, it may be output through reflection from the tank wall, the signal processing module needs to process the received radar signal to obtain the radar signal reflected by the tank bottom sediment, and then calculate the height of the tank bottom sediment at multiple positions according to the radar signal reflected by the tank bottom sediment. Among them, the specific position can be determined by the positioning algorithm of the radar signal.

[0033] For storage tanks such as dome tanks, due to the storage characteristics of the internal medium, the sediments at the bottom of the tank often have a relatively flat surface. Therefore, the volume of the sediments at the bottom of the tank can be estimated based on the height of the sediments at multiple locations, providing technical support for the safe operation of the tank and technical guidance for the maintenance of the tank.

[0034] The real-time monitoring system for bottom sediment of a storage tank provided by an embodiment of the present invention provides a signal transmitting module for transmitting a radar signal into the interior of the storage tank, provides a signal receiving module for receiving a radar signal output after the radar signal is transmitted inside the storage tank, and sends the radar signal to a signal processing module, and provides a signal processing module for acquiring a radar signal reflected back by the bottom sediment of the tank according to the received radar signal, and calculating the heights of the bottom sediment of the tank at multiple positions according to the radar signal reflected back by the bottom sediment of the tank, thereby realizing online real-time monitoring of the bottom sediment of the storage tank, saving labor costs, and meeting monitoring requirements.

[0035] According to a real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention, the signal processing module 3 is also used to: obtain a cross-sectional view of the tank bottom sediments at the multiple positions based on the heights of the tank bottom sediments at the multiple positions, obtain a surface view of the tank bottom sediments by fitting the cross-sectional view of the tank bottom sediments at the multiple positions, and obtain the volume of the tank bottom sediments according to the surface view of the tank bottom sediments.

[0036] In order to obtain a more accurate volume estimation result, in an embodiment of the present invention, the signal processing module 3 obtains the cross-sectional views of the tank bottom sediments at multiple positions based on the heights of the tank bottom sediments at multiple positions, and obtains the surface view of the tank bottom sediments by fitting the cross-sectional views of the tank bottom sediments at multiple positions, such as by fitting the cross-sectional views of the tank bottom sediments at multiple positions by an interpolation method. The surface view of the tank bottom sediments is a three-dimensional view including the curved surface and the tank bottom. The volume of the tank bottom sediments is obtained according to the surface view of the tank bottom sediments. Among them, the volume of the tank bottom sediments can be obtained according to the surface view of the tank bottom sediments based on integral calculation.

[0037] The real-time monitoring system for tank bottom sediments provided by the embodiment of the present invention obtains cross-sectional views of tank bottom sediments at multiple positions based on the heights of tank bottom sediments at multiple positions, obtains a surface view of tank bottom sediments according to the cross-sectional views of tank bottom sediments at multiple positions by fitting, and obtains the volume of tank bottom sediments according to the surface view of tank bottom sediments. The system can realize three-dimensional modeling of tank bottom sediments and online volume monitoring, display the morphology of tank bottom sediments, provide technical support for the safe operation of storage tanks, provide technical guidance for the maintenance of storage tanks, and improve the accuracy of tank bottom sediment volume calculation, thereby improving the accuracy of real-time monitoring of tank bottom sediments.

[0038] According to a real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention, the signal processing module 3, when used to obtain the volume of the tank bottom sediments according to the surface map of the tank bottom sediments, is specifically used to: input the surface map of the tank bottom sediments into a volume estimation model, and output the volume of the tank bottom sediments; wherein the volume estimation model is obtained through deep learning training, using the surface map of the tank bottom sediments in the training samples as input and the volume of the tank bottom sediments as output.

[0039] In order to improve the speed and simplicity of the signal processing module 3 for calculating the volume of the sediment at the bottom of the tank, in the embodiment of the present invention, the volume estimation of the sediment at the bottom of the tank is realized based on a pre-trained volume estimation model. The volume estimation model is obtained through deep learning training, with the surface image of the sediment at the bottom of the tank in the training sample as input and the volume of the sediment at the bottom of the tank as output.

[0040] When estimating the volume of the sediment at the bottom of the tank, the surface map of the sediment at the bottom of the tank is input into the volume estimation model, and the volume of the sediment at the bottom of the tank is output.

[0041] The real-time monitoring system for tank bottom sediment provided by the embodiment of the present invention improves the speed and simplicity of calculating the volume of tank bottom sediment by inputting a surface map of tank bottom sediment into a volume estimation model and outputting the volume of tank bottom sediment, thereby improving the speed and simplicity of obtaining real-time monitoring results of tank bottom sediment.

[0042] According to a real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention, the signal processing module 3, when used to obtain a radar signal reflected by the tank bottom sediments based on the received radar signal, is specifically used to: denoise the received radar signal to obtain a radar signal after noise removal; and obtain the radar signal reflected by the tank bottom sediments by performing cluster analysis on the radar signal after noise removal.

[0043] The signal processing module 3 uses a denoising algorithm (such as a wavelet denoising algorithm) to denoise the received radar signal and filter out the noise signal that interferes with the normal reflected signal. The signal clustering algorithm is used to perform cluster analysis on the denoised signal to separate the signal reflected by the tank bottom sediment from the signal reflected by the tank wall to obtain the radar signal reflected by the tank bottom sediment.

[0044] The real-time monitoring system for tank bottom sediments provided by the embodiment of the present invention performs denoising processing on the received radar signal to obtain the radar signal after the noise is removed, and performs cluster analysis on the radar signal after the noise is removed to obtain the radar signal reflected by the tank bottom sediments, thereby improving the accuracy of obtaining the radar signal reflected by the tank bottom sediments, thereby improving the accuracy of the real-time monitoring results of the tank bottom sediments.

[0045] According to a real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention, the signal receiving module 2 carries an identification of the signal receiving module 2 when sending the radar signal to the signal processing module 3; when the signal processing module 3 is used to calculate the heights of the tank bottom sediments at multiple positions according to the radar signal transmitted by the tank bottom sediments, it is specifically used to: identify the radar signals sent by different signal receiving modules 2 according to the identification of the signal receiving module 2, and calculate the heights of the tank bottom sediments at corresponding positions according to the radar signals sent by the signal receiving module 2; wherein the corresponding position is a position located by the radar signal; integrate and calculate the heights of the tank bottom sediments at the same position to obtain the heights of the tank bottom sediments at the corresponding position; and obtain the heights of the tank bottom sediments at the multiple positions according to the heights of the tank bottom sediments at different positions.

[0046] When there are two or more signal receiving modules 2 , the signal receiving module 2 carries the identification of the signal receiving module 2 when sending the radar signal to the signal processing module 3 , so that the signal processing module 3 can clearly know which signal receiving module 2 sent the radar signal.

[0047] When the signal processing module 3 is used to calculate the height of the tank bottom sediment at multiple positions according to the radar signal reflected by the tank bottom sediment, the radar signal sent by different signal receiving modules 2 is identified according to the identification of the signal receiving module 2, and for each radar signal sent by the signal receiving module 2, the height of the tank bottom sediment at the corresponding position is calculated according to the radar signal sent by the signal receiving module 2. The corresponding position corresponding to the height of the tank bottom sediment can be calculated by the positioning algorithm of the radar signal.

[0048] For the same position, multiple tank bottom sediment heights may be obtained. In order to improve the accuracy of the tank bottom sediment height at this position, the heights of multiple tank bottom sediments at this position can be integrated and calculated to obtain a final height value as the tank bottom sediment height at this position. If there is only one tank bottom sediment result at a certain position, the result is retained. In this way, the heights of the tank bottom sediments at the above multiple positions are obtained based on the obtained heights of the tank bottom sediments at different positions.

[0049] The real-time monitoring system for tank bottom sediments provided by the embodiment of the present invention identifies radar signals sent by different signal receiving modules according to the identifiers of the signal receiving modules, calculates the height of tank bottom sediments at corresponding positions according to the radar signals sent by the signal receiving modules, integrates and calculates the heights of tank bottom sediments at the same positions to obtain the heights of tank bottom sediments at corresponding positions, and obtains the heights of tank bottom sediments at multiple positions according to the heights of tank bottom sediments at different positions, thereby improving the accuracy of the calculation of the height of tank bottom sediments, thereby improving the accuracy of the real-time monitoring results of tank bottom sediments.

[0050] According to a real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention, the signal processing module 3 is used to integrate and calculate the heights of tank bottom sediments at the same position to obtain the heights of tank bottom sediments at corresponding positions. It is specifically used to: obtain the heights of tank bottom sediments at corresponding positions by taking the average of the heights of tank bottom sediments at the same position.

[0051] When the signal processing module 3 integrates and calculates the heights of the tank bottom sediments at the same position to obtain the heights of the tank bottom sediments at the corresponding position, it obtains the heights of the tank bottom sediments at the corresponding position by taking the average of the heights of the tank bottom sediments at the same position.

[0052] The real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention obtains the height of the tank bottom sediments at the corresponding position by taking the average of the heights of the tank bottom sediments at the same position, thereby realizing accurate and convenient acquisition of the final result of the height of the tank bottom sediments at a certain position when there are multiple calculation results of the heights of the tank bottom sediments at that position.

[0053] According to a real-time monitoring system for bottom sediments of a storage tank provided by an embodiment of the present invention, the signal transmitting module 1 and the at least one signal receiving module 2 are installed in the top space of the side wall of the storage tank.

[0054] The signal transmitting module 1 and the signal receiving module 2 are installed in the top space of the storage tank without direct contact with the storage medium (such as oil) in the storage tank, and the real-time monitoring of the sediment at the bottom of the storage tank is realized while ensuring the safety of the signal transmitting module 1 and the signal receiving module 2. Since the cost of the signal transmitting module 1 is relatively high and the cost of the signal receiving module 3 is relatively low, one signal transmitting module 1 and multiple signal receiving modules 3 can be set to enhance the receiving ability of the radar signal. In addition, the signal transmitting module 1 and at least one signal receiving module 3 can be evenly installed on the top of the side wall of the storage tank to further enhance the receiving ability of the radar signal, thereby improving the accuracy of the real-time monitoring results of the sediment at the bottom of the storage tank.

[0055] Figure 2 FIG. 1 is one of the installation diagrams of the signal transmitting module and the signal receiving module in the real-time monitoring system for the bottom sediment of the storage tank provided by the embodiment of the present invention. Figure 2 The figure shows a horizontal cross-sectional view of the top of the tank. The circle represents the cross-sectional view of the top of the tank, and the signal transmitting module 1 and the three signal receiving modules 3 are evenly installed in the top space of the side wall of the tank.

[0056] Figure 3 This is the second installation schematic diagram of the signal transmitting module and the signal receiving module in the real-time monitoring system for bottom sediment of a storage tank provided by an embodiment of the present invention. Figure 3 Based on Figure 2 Longitudinal section of the tank under the installation method.

[0057] The real-time monitoring system for bottom sediments of a storage tank provided by the embodiment of the present invention improves the accuracy of the real-time monitoring result of bottom sediments of the storage tank by installing a signal transmitting module and at least one signal receiving module in the top space of the side wall of the storage tank.

[0058] According to a real-time monitoring system for tank bottom sediments provided by an embodiment of the present invention, the signal transmitting module 1 and the at least one signal receiving module 2 are at the same horizontal position; when the signal processing module 3 is used to calculate the height of the tank bottom sediments at the corresponding position according to the radar signal sent by the signal receiving module 2, it is specifically used to: calculate the height of the tank bottom sediments at the corresponding position according to the distance between the signal transmitting module 1 and the bottom of the tank, the air height between the signal transmitting module 1 and the upper surface of the storage medium in the tank, the spacing between the signal transmitting module 1 and the signal receiving module 2, the signal transmission angle of the radar signal, the signal incident angle of the radar signal incident on the surface of the tank bottom sediments, the time from the signal transmitting module 1 transmitting the radar signal to the signal receiving module 2 receiving the radar signal, and the transmission speed of the radar signal.

[0059] The height of the tank bottom sediment at the corresponding position can be calculated based on the transmission characteristics of the electromagnetic wave signal in the medium in the storage tank, the distance between the signal transmitting module 1 and the bottom of the tank, the air height between the signal transmitting module 1 and the upper surface of the storage medium in the tank, the spacing between the signal transmitting module 1 and the signal receiving module 2, the signal transmission angle of the radar signal, the signal incident angle of the radar signal incident on the surface of the tank bottom sediment, the time from the signal transmitting module 1 transmitting the radar signal to the signal receiving module 2 receiving the radar signal, and the transmission speed of the radar signal.

[0060] In particular, when the signal transmitting module 1 and the signal receiving module 2 are installed at the top of the top space of the tank side wall, the distance between the signal transmitting module 1 and the bottom of the tank is regarded as the tank height, and the air height between the signal transmitting module and the upper surface of the storage medium in the tank is regarded as the height of the air at the top of the tank.

[0061] The real-time monitoring system for tank bottom sediment provided by the embodiment of the present invention calculates the height of the tank bottom sediment at the corresponding position according to the distance between the signal transmitting module and the tank bottom, the air height between the signal transmitting module and the upper surface of the storage medium in the tank, the spacing between the signal transmitting module and the signal receiving module, the signal transmitting angle of the radar signal, the signal incident angle of the radar signal incident on the surface of the tank bottom sediment, the time from the signal transmitting module transmitting the radar signal to the signal receiving module receiving the radar signal, and the transmission speed of the radar signal, thereby improving the accuracy of the calculation of the tank bottom sediment height, thereby improving the accuracy of the real-time monitoring of the tank bottom sediment.

[0062] According to a real-time monitoring system for tank bottom sediment provided by an embodiment of the present invention, the height of the tank bottom sediment at the corresponding position is obtained by solving the following equations simultaneously:

[0063] H=h 1 +h2 +h 3

[0064] R=h 1 tanθ 1 +h 2 tanθ 2 +h 3 tanθ 3

[0065]

[0066] Wherein, H represents the distance between the signal transmitting module and the bottom of the tank, h 1 represents the air height between the signal transmitting module and the upper surface of the storage medium in the tank, h 2 Indicates the height of the storage medium at the corresponding position, h 3 represents the height of the tank bottom sediment at the corresponding position, R represents the distance between the signal transmitting module and the signal receiving module, θ 1 represents the signal transmission angle of the radar signal, θ 2 represents the signal incident angle of the radar signal incident on the surface of the tank bottom sediment, θ 3 represents the signal refraction angle of the radar signal incident on the surface of the tank bottom sediment, t represents the time from the signal transmitting module transmitting the radar signal to the signal receiving module receiving the radar signal, and c represents the transmission speed of the radar signal.

[0067] Figure 4 1 is a schematic diagram of the height calculation principle of the tank bottom sediment in the tank bottom sediment real-time monitoring system provided by the embodiment of the present invention. Figure 4 As shown, the small rectangle on the upper left represents the signal transmitting module 1, and the small rectangle on the upper right represents the signal receiving module 2. 1 Indicates the air height between the signal transmitting module 1 and the upper surface of the storage medium in the tank, h 2 Indicates the height of the storage medium at the corresponding position, h 3 Indicates the height of the tank bottom sediment at the corresponding position. h 1 、h 2 、h 3 The sum is H.

[0068] Among them, the signal transmission angle of the radar signal is a known quantity of the configuration.

[0069] The signal incident angle θ of the radar signal incident on the surface of the tank bottom sediment 2 It is expressed as:

[0070]

[0071] Among them, ε1 Indicates the dielectric constant of the storage medium (such as oil) in the tank, ε 2 Represents the dielectric constant of the tank sediment. μ 1 Indicates the magnetic permeability of the storage medium in the tank, μ 2 Indicates the magnetic permeability of the tank sediment. Since the magnetic permeability is basically the same in general media (non-metal), the signal incident angle θ of the radar signal incident on the surface of the tank bottom sediment can be calculated by the following formula: 2 :

[0072]

[0073] θ 3 It represents the refraction angle of the radar signal incident on the surface of the sediment at the bottom of the tank, which is an unknown quantity. t represents the time from the signal transmitting module transmitting the radar signal to the signal receiving module receiving the radar signal, and c represents the transmission speed of the radar signal, which are all known quantities.

[0074] In the above equations, there is h 2 、h 3 ,θ 3 The three unknown quantities can be solved by solving the three equations in the above equation group to obtain the height h of the tank bottom sediment at the corresponding position. 3 .

[0075] The real-time monitoring system for tank bottom sediment provided by the embodiment of the present invention further improves the accuracy of tank bottom sediment height calculation by providing a calculation formula for the height of tank bottom sediment at a corresponding position, thereby improving the accuracy of the real-time monitoring results of tank bottom sediment.

[0076] According to a real-time monitoring system for bottom sediments of a storage tank provided by an embodiment of the present invention, the system also includes a control module, which is used to configure monitoring implementation data and send the monitoring implementation data to the signal transmission module 1, so that the signal transmission module 1 transmits a radar signal according to the monitoring implementation data; wherein the monitoring implementation data includes: the signal transmission angle of the radar signal, the frequency of the radar signal, the transmission power of the radar signal and the period of the signal transmission module transmitting the radar signal to the inside of the storage tank.

[0077] The control module can also be deployed in the control center to configure the data relied on for monitoring, including the signal transmission angle θ of the radar signal 1 , the frequency of the radar signal, the transmission power of the radar signal, and the period of the signal transmitting module transmitting the radar signal to the inside of the tank.

[0078] The control module sends the above monitoring implementation data to the signal transmitting module 1 by communicating with the signal transmitting module 1, so that the signal transmitting module 1 can automatically perform real-time monitoring of the sediment at the bottom of the storage tank according to the monitoring implementation data.

[0079] In addition, the control center can build a database to store oil characteristic data and monitoring implementation data, such as the dielectric constant of the oil, the attenuation loss of electromagnetic waves in the oil, the signal transmission angle, the size of the storage tank, etc., which is used to calculate the signal propagation path in the medium in the tank and provide data support for the signal transmission module 1.

[0080] The real-time monitoring system for bottom sediments of storage tanks provided by the embodiment of the present invention configures monitoring implementation data through a control module and sends the monitoring implementation data to a signal transmission module, thereby realizing automatic real-time monitoring of bottom sediments of storage tanks.

[0081] According to a real-time monitoring system for bottom sediments of a storage tank provided by an embodiment of the present invention, the transmission power of the radar signal is the minimum power required for the radar signal to reach the signal receiving module 2 after being reflected by the tank bottom sediments.

[0082] The control module can calculate the minimum transmission power according to the characteristic parameters of the storage medium (such as oil) in the current storage tank. The minimum power is the minimum power required for the radar signal to reach the signal receiving module 2 after being transmitted through the tank bottom sediment. The minimum transmission power required in the current use environment is obtained, so that the signal receiving module 2 can successfully receive the signal transmitted back by the tank bottom sediment. The signal transmitting module 1 transmits the radar signal according to the obtained minimum transmission power to avoid the influence of excessive power on the storage medium in the tank, improve storage safety; in addition, it can also save costs.

[0083] The real-time monitoring system for tank bottom sediment provided by the embodiment of the present invention improves the safety of the storage medium in the tank and reduces the cost by setting the transmission power of the radar signal to be the minimum power required for the radar signal to reach the signal receiving module after being transmitted through the tank bottom sediment.

[0084] According to a real-time monitoring system for sediments at the bottom of a storage tank provided by an embodiment of the present invention, the signal transmitting module 1 and the signal receiving module 2 are provided with explosion-proof housings.

[0085] Since the storage tank has the risk of explosion, in order to improve safety, the signal transmitting module 1 and the signal receiving module 2 are provided with explosion-proof housings.

[0086] The real-time monitoring system for sediments at the bottom of a storage tank provided by the embodiment of the present invention is provided with an explosion-proof housing through the signal transmitting module and the signal receiving module, thereby further improving safety.

[0087] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0088] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A real-time monitoring system for tank bottom sediments, It is characterized in that It includes a signal transmitting module, at least one signal receiving module and a signal processing module, wherein: The signal transmitting module is used to transmit radar signals into the storage tank; The signal receiving module is used to receive the radar signal output after the radar signal is transmitted inside the storage tank, and send the radar signal to the signal processing module; The signal processing module is used to obtain the radar signal reflected by the tank bottom sediment according to the received radar signal, and calculate the height of the tank bottom sediment at multiple positions according to the radar signal transmitted by the tank bottom sediment.

2. The real-time monitoring system for bottom sediment of a storage tank according to claim 1, It is characterized in that The signal processing module is also used for: Based on the heights of the tank bottom sediments at the multiple positions, cross-sectional views of the tank bottom sediments at the multiple positions are obtained, and a surface view of the tank bottom sediments is obtained by fitting the cross-sectional views of the tank bottom sediments at the multiple positions. Based on the surface view of the tank bottom sediments, the volume of the tank bottom sediments is obtained.

3. The real-time monitoring system for tank bottom sediment according to claim 2, It is characterized in that When the signal processing module is used to obtain the volume of the tank bottom sediment according to the surface diagram of the tank bottom sediment, it is specifically used to: The surface image of the tank bottom sediment is input into a volume estimation model, and the volume of the tank bottom sediment is output; wherein the volume estimation model is obtained through deep learning training, with the surface image of the tank bottom sediment in the training sample as input and the volume of the tank bottom sediment as output.

4. The real-time monitoring system for bottom sediment of a storage tank according to claim 1, It is characterized in that When the signal processing module is used to obtain the radar signal reflected by the tank bottom sediment according to the received radar signal, it is specifically used to: Performing denoising processing on the received radar signal to obtain a radar signal after the noise is removed; The radar signal reflected by the tank bottom sediment is obtained by clustering analysis on the radar signal after noise removal.

5. The real-time monitoring system for tank bottom sediment according to claim 1, It is characterized in that When the signal receiving module sends the radar signal to the signal processing module, the signal receiving module carries the identification of the signal receiving module; when the signal processing module is used to calculate the height of the tank bottom sediment at multiple positions according to the radar signal transmitted by the tank bottom sediment, it is specifically used to: Identifying the radar signals sent by different signal receiving modules according to the identifiers of the signal receiving modules, and calculating the height of the tank bottom sediment at the corresponding position according to the radar signals sent by the signal receiving modules; wherein the corresponding position is the position obtained by positioning the radar signal; The heights of the tank bottom sediments at the same position are integrated and calculated to obtain the heights of the tank bottom sediments at the corresponding position; According to the heights of the tank bottom sediments at different positions, the heights of the tank bottom sediments at the multiple positions are obtained.

6. The real-time monitoring system for tank bottom sediment according to claim 5, It is characterized in that When the signal processing module is used to integrate and calculate the heights of tank bottom sediments at the same position to obtain the heights of tank bottom sediments at corresponding positions, it is specifically used to: The height of the tank bottom sediment at the same position is obtained by averaging the heights of the tank bottom sediment at the same position.

7. The real-time monitoring system for bottom sediment of a storage tank according to claim 5, It is characterized in that The signal transmitting module and the at least one signal receiving module are installed in the top space of the side wall of the storage tank.

8. The real-time monitoring system for tank bottom sediment according to claim 7, It is characterized in that The signal transmitting module and the at least one signal receiving module are at the same horizontal position; when the signal processing module is used to calculate the height of the tank bottom sediment at the corresponding position according to the radar signal sent by the signal receiving module, it is specifically used to: The height of the tank bottom sediment at the corresponding position is calculated based on the distance between the signal transmitting module and the bottom of the storage tank, the air height between the signal transmitting module and the upper surface of the storage medium in the storage tank, the spacing between the signal transmitting module and the signal receiving module, the signal transmitting angle of the radar signal, the signal incident angle of the radar signal incident on the surface of the tank bottom sediment, the time from the signal transmitting module transmitting the radar signal to the signal receiving module receiving the radar signal, and the transmission speed of the radar signal.

9. The real-time monitoring system for bottom sediment of a storage tank according to claim 8, It is characterized in that The height of the tank bottom sediment at the corresponding position is obtained by solving the following equations: H=h 1 +h 2 +h 3 R=h 1 tanθ 1 +h 2 tanθ 2 +h 3 tanθ 3 Wherein, H represents the distance between the signal transmitting module and the bottom of the tank, h 1 represents the air height between the signal transmitting module and the upper surface of the storage medium in the tank, h 2 Indicates the height of the storage medium at the corresponding position, h 3 represents the height of the tank bottom sediment at the corresponding position, R represents the distance between the signal transmitting module and the signal receiving module, θ 1 represents the signal transmission angle of the radar signal, θ 2 represents the signal incident angle of the radar signal incident on the surface of the tank bottom sediment, θ 3 represents the signal refraction angle of the radar signal incident on the surface of the tank bottom sediment, t represents the time from the signal transmitting module transmitting the radar signal to the signal receiving module receiving the radar signal, and c represents the transmission speed of the radar signal.

10. The real-time monitoring system for bottom sediment of a storage tank according to claim 8, It is characterized in that The system further comprises a control module, the control module being used to configure monitoring implementation data and send the monitoring implementation data to the signal transmitting module so that the signal transmitting module transmits a radar signal according to the monitoring implementation data; The monitoring implementation data includes: the signal transmission angle of the radar signal, the frequency of the radar signal, the transmission power of the radar signal and the period of the signal transmission module transmitting the radar signal to the inside of the storage tank.

11. The real-time monitoring system for bottom sediment of a storage tank according to claim 1, It is characterized in that The transmission power of the radar signal is the minimum power required for the radar signal to reach the signal receiving module after being reflected by the tank bottom sediment.

12. The real-time monitoring system for bottom sediment of a storage tank according to claim 1, It is characterized in that The signal transmitting module and the signal receiving module are provided with explosion-proof housings.

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