CN209764798U - System for measuring moisture content - Google Patents
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- CN209764798U CN209764798U CN201920159641.XU CN201920159641U CN209764798U CN 209764798 U CN209764798 U CN 209764798U CN 201920159641 U CN201920159641 U CN 201920159641U CN 209764798 U CN209764798 U CN 209764798U
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Abstract
the utility model discloses a system for measure moisture content belongs to crude oil engineering's instrument and detects technical field. The system comprises an upper computer, a control device, a mechanical driving device and a signal acquisition device; the upper computer is electrically connected with the control device, and the mechanical driving device and the signal acquisition device are respectively electrically connected with the control device. The utility model provides a system for measure moisture content reciprocates in the crude oil storage tank through mechanical drive device drive signal collection system, at signal collection system's removal in-process, acquires the detection data who is used for confirming signal collection system position to send for the host computer through controlling means. Meanwhile, the signal acquisition device detects the water content of the liquid in the crude oil storage tank and sends the water content to the upper computer through the control device. The upper computer determines the position of the signal acquisition device according to the detection data, and further determines the whole water content of the crude oil storage tank, so that the oil-water interface in the crude oil storage tank is accurately determined, and the accuracy of the determined oil-water interface is guaranteed.
Description
Technical Field
the utility model belongs to the technical field of crude oil engineering's instrument detects, in particular to system for measuring moisture content.
Background
Typically, crude oil is stored in a crude oil storage tank after it has been produced from an oil field. Since the crude oil storage tank may contain a certain amount of water, after the crude oil is stored in the crude oil storage tank, an oil-water emulsion composed of the crude oil and the water may be formed, so that an emulsion zone is formed at an oil-water interface, and the water content of the emulsion zone at different depth positions is different. In order to ensure the water content of the crude oil conveyed outwards, the crude oil reserve can be accurately calculated, and a reliable basis is provided for the management of a storage and transportation system. Therefore, in the process of production, storage and transportation of crude oil, the oil-water interface in the crude oil storage tank needs to be accurately detected, so that the accuracy of the statistical results of the crude oil yield and the crude oil storage is ensured, and the automatic management of an oil field is realized.
In the related art, a system for measuring the moisture content generally includes a dual level gauge and an upper computer, and the dual level gauge is electrically connected to the upper computer. The double-liquid-level measuring instrument is arranged on the top of the crude oil storage tank, and the double-liquid-level measuring instrument is provided with the multipoint position sensors distributed at equal intervals, so that an electromagnetic field generating environment can be established between the double-liquid-level measuring instrument and the tank wall of the crude oil storage tank, and a reverse magnetic field is guaranteed to be generated. Therefore, the double-liquid-level measuring instrument can detect the electromagnetic field quantity of each detection point through the multi-point sensor, calculates according to the electromagnetic field quantity to obtain the water content of each detection point, transmits the water content to the upper computer and displays the water content by the upper computer. And then the upper computer determines the position of an oil-water interface by analyzing the water content of each detection point.
However, an emulsification zone with a height of tens of centimeters or even one or two meters is generally formed in the crude oil storage tank, so that an obvious oil-water interface is not formed, and in the system, a certain distance exists between every two detection points, so that the water content of the crude oil storage tank in the whole process cannot be measured specifically, and the determined position of the oil-water interface is not accurate enough.
SUMMERY OF THE UTILITY MODEL
The utility model provides a system for measure moisture content can solve the whole moisture content of unable concrete measurement crude oil storage tank among the correlation technique, and the problem of the oil water interface in the crude oil storage tank is accurately determined. The technical scheme is as follows:
The utility model provides a system for measuring the water content, which comprises an upper computer, a control device, a mechanical driving device and a signal acquisition device;
The upper computer is electrically connected with the control device, the mechanical driving device and the signal acquisition device are respectively electrically connected with the control device, and the control device is used for controlling the mechanical driving device when receiving an instruction of the upper computer;
The mechanical driving device is connected with the signal acquisition device through a hoisting rope, the mechanical driving device is used for driving the signal acquisition device to move up and down in the crude oil storage tank, in the moving process of the signal acquisition device, detection data are acquired and sent to the upper computer through the control device, and the detection data are used for determining the position of the signal acquisition device in the crude oil storage tank; the signal acquisition device is used for detecting the water content of the liquid in the crude oil storage tank and sending the detected water content to the upper computer through the control device, and the upper computer is used for determining an oil-water interface in the crude oil storage tank according to the received detection data and the water content.
optionally, the signal acquisition device comprises a housing, a data processing module, and an ultrasonic sensor and a temperature sensor capable of communicating with the data processing module;
The housing comprises a first part and a second part connected to the bottom of the first part;
the data processing module is sealed in the first component, the temperature sensor is sealed on the outer wall of the first component and is positioned between the first component and the second component, the ultrasonic sensor is sealed and installed in the second component, the second component comprises a plane capable of reflecting ultrasonic waves emitted by the ultrasonic sensor, and the plane is perpendicular to the liquid level in the crude oil storage tank.
Optionally, the second component comprises a first support bar, a second support bar, a sensor mount, and an ultrasonic reflection plate;
The first end of the first supporting rod and the first end of the second supporting rod are connected with the bottom of the first component, the direction of the first supporting rod and the direction of the second supporting rod are perpendicular to the liquid level in the crude oil storage tank, the sensor fixing piece is installed at the second end of the first supporting rod, the ultrasonic reflection flat plate is installed at the second end of the second supporting rod, the plane where the sensor fixing piece is located is parallel to the plane where the ultrasonic reflection flat plate is located, and the ultrasonic sensor is sealed in the sensor fixing piece.
Optionally, the axis of the sensor holder and the axis of the ultrasound reflection plate are aligned.
Optionally, the second member further comprises at least one third support bar connected between the sensor mount and the ultrasonic reflection plate.
Optionally, the at least one third support bar is parallel to each other, and the at least one third support bar is perpendicular to the first support bar or the second support bar.
optionally, the ultrasonic sensor, the temperature sensor and the data processing module are sealed in a pouring manner.
Optionally, the mechanical driving device includes a servo motor, a magnetic coupler, a wire spool and an encoder, the magnetic coupler includes a first portion and a second portion, the servo motor is connected to the first portion, the first portion is magnetically connected to the second portion, the second portion is connected to the wire spool, the encoder is located inside the servo motor, and the encoder is configured to generate the detection data during the rotation of the servo motor.
optionally, a first end of the sling rope passes through a flange arranged on the top of the crude oil storage tank to be connected with the signal acquisition device, and a second end of the sling rope is wound on the wire spool.
Optionally, the control device includes a PLC (Programmable Logic Controller), and the PLC is connected to the servo motor.
The utility model discloses in the system of measurement moisture content that provides, reciprocate in the crude oil storage tank through mechanical drive device drive signal collection system, at signal collection system's removal in-process, acquire the testing data who is used for confirming signal collection system position to send for the host computer through controlling means. Meanwhile, the signal acquisition device detects the water content of the liquid in the crude oil storage tank and sends the water content to the upper computer through the control device. The upper computer determines the position of the signal acquisition device according to the detection data, and further determines the whole-process water content of the crude oil storage tank, so that the oil-water interface in the crude oil storage tank is accurately determined, the accuracy of the determined oil-water interface is ensured, the crude oil yield and the crude oil inventory can be more accurately counted subsequently, and a reliable basis is provided for the management of a storage and transportation system.
Drawings
Fig. 1 is a schematic structural diagram of a system for measuring moisture content according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram of a signal acquisition device according to an embodiment of the present invention;
Fig. 3 is a schematic structural diagram of another system of a signal acquisition device according to an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a system of another signal acquisition device according to an embodiment of the present invention;
Fig. 5 is a schematic structural diagram of a system for measuring moisture content according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another system for measuring moisture content according to an embodiment of the present invention;
reference numerals:
1: an upper computer; 2: a control device; 21: a PLC;
3: a mechanical drive device; 31: a servo motor; 32: a magnetic coupler; 33: a wire spool; 34: an encoder;
4: a signal acquisition device; 41: a housing; 411: a first member; 412: a second component; 4121: a first support bar; 4122: a second support bar; 4123: a sensor mount; 4124: an ultrasonic reflection plate; 4125: at least one third support bar; 42: a data processing module; 43: an ultrasonic sensor; 44: a temperature sensor;
5: hoisting a weight rope; 6: a crude oil storage tank; 61: and (4) a flange.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a system for measuring moisture content according to the present invention, as shown in fig. 1, the system includes an upper computer 1, a control device 2, a mechanical driving device 3 and a signal collecting device 4;
The upper computer 1 is electrically connected with the control device 2, the mechanical driving device 3 and the signal acquisition device 4 are respectively electrically connected with the control device 2, and the control device 2 is used for controlling the mechanical driving device 3 when receiving an instruction of the upper computer 1;
The mechanical driving device 3 is connected with the signal acquisition device 4 through a hoisting rope 5, the mechanical driving device 3 is used for driving the signal acquisition device 4 to move up and down in the crude oil storage tank 6, in the moving process of the signal acquisition device 4, detection data are obtained and sent to the upper computer 1 through the control device 2, and the detection data are used for determining the position of the signal acquisition device 4 in the crude oil storage tank 6; the signal acquisition device 4 is used for detecting the water content of the liquid in the crude oil storage tank 6 and sending the detected water content to the upper computer 1 through the control device 2, and the upper computer 1 is used for determining an oil-water interface in the crude oil storage tank 6 according to the received detection data and the water content.
In the utility model, the signal acquisition device 4 is connected with the mechanical drive device 3 through the hoisting rope 5, the mechanical drive device 3 can drive the signal acquisition device 4 to move up and down in the crude oil storage tank 6, and the mechanical drive device 3 can acquire detection data for determining the position of the signal acquisition device 4 in the moving process of the signal acquisition device 4, meanwhile, the signal acquisition device 4 can detect the water content of liquid in the crude oil storage tank 6, the mechanical drive device 3 and the signal acquisition device 4 respectively send the detection data and the detected water content to the upper computer 1 through the control device 2, the upper computer 1 can determine the position of the signal acquisition device 4 according to the detection data, further determine the whole course water content in the depth direction of the crude oil storage tank 6, so as to accurately determine the oil-water interface in the crude oil storage tank 6, the labor cost is reduced, and the efficiency of calculating the water content is improved, meanwhile, a foundation is laid for the follow-up accurate statistics of the crude oil yield and the stock, and a reliable basis is provided for the management of a storage and transportation system.
When acquiring the detection data, the mechanical drive device 3 records the acquisition time, and transmits the acquisition time and the acquired detection data to the upper computer 1 through the control device 2. When the signal acquisition device 4 detects the water content, recording detection time, and sending the detection time and the detected water content to the upper computer 1 through the control device 2; the upper computer 1 matches the detection data with the detected water content according to the acquisition time and the detection time, namely if the acquisition time is the same as the detection time, the detection data corresponding to the acquisition time is matched with the water content corresponding to the detection time, or if the time interval between the acquisition time and the detection time is not more than the preset time, the detection data corresponding to the acquisition time is matched with the water content corresponding to the detection time. Of course, the upper computer 1 may also perform matching between the water content and the detection data according to the receiving time of the upper computer itself receiving the water content and the detection data. For example, the upper computer 1 may match the detection data with the same corresponding receiving time and the moisture content, or match the detection data with the corresponding receiving time interval not greater than a preset time length and the moisture content.
the upper computer 1 may be a terminal, such as a computer, or may be other equipment capable of issuing an instruction to the mechanical driving device 3 through the control device 2. The signal acquisition device 4 can detect the water content of the liquid from top to bottom in the crude oil storage tank 6 or from bottom to top under the drive of the mechanical drive device 3.
in addition, the upper computer 1 can determine the position of the signal acquisition device 4 in the crude oil storage tank according to the detection data after matching the detection data with the water content, then determine the water content of the liquid detected by the signal acquisition device 4 at the position, match the position with the water content of the liquid detected by the position, thereby determining the water content of the liquid at the position in the crude oil storage tank 6, the upper computer 1 determines the water content of the liquid at a plurality of positions through the above method, finally obtain the whole-course water content of the liquid in the crude oil storage tank 6, and can more accurately detect the oil-water interface in the crude oil storage tank 6 according to the whole-course water content of the liquid in the crude oil storage tank 6, so that the accuracy of the determined oil-water interface is ensured, meanwhile, the operation of subsequent crude oil storage quantity statistics of a user can be simplified, and the labor.
Moreover, when the upper computer 1 obtains the whole-course water content of the liquid in the crude oil storage tank 6, the water content of the liquid in the crude oil storage tank 6 can be displayed in a curve drawing mode, so that a user can more directly and clearly know the water content condition in the crude oil storage tank 6, and the subsequent operation is facilitated.
In one possible implementation, as shown in fig. 2, the signal acquisition device 4 includes a housing 41, a data processing module 42, and an ultrasonic sensor 43 and a temperature sensor 44 that can communicate with the data processing module 42; the housing 41 includes a first member 411 and a second member 412 connected to the bottom of the first member 411; the data processing module 42 is sealed inside the first member 411, the temperature sensor 44 is sealed on the outer wall of the first member 411 and is located between the first member 411 and the second member 412, the ultrasonic sensor 43 is hermetically installed in the second member 412, and the second member 412 includes a plane capable of reflecting the ultrasonic wave emitted from the ultrasonic sensor 43, the plane being perpendicular to the liquid level inside the crude oil storage tank 6.
Because the signal acquisition device 4 needs to move up and down in the crude oil storage tank 6 and can be in contact with liquid in the crude oil storage tank 6, the data processing module 42 is sealed inside the first part 411, the temperature sensor 44 is sealed on the outer wall of the first part 411, and the ultrasonic sensor 43 is sealed and installed in the second part 412, so that the data processing module 42, the ultrasonic sensor 43 and the temperature sensor 44 are prevented from being in direct contact with the liquid in the crude oil storage tank 6 to cause potential safety hazards, and meanwhile, damage to devices in the signal acquisition device 4 can be avoided. The plane capable of reflecting the ultrasonic waves emitted by the ultrasonic sensor 43 may be a plane made of any material, as long as the plane can reflect the ultrasonic waves emitted by the ultrasonic sensor 43.
The ultrasonic sensor 43, the temperature sensor 44 and the data processing module 42 are sealed by encapsulation. Like this, can guarantee the component of signal pickup assembly 4, internal circuit is at the during operation even, can not contact with the liquid in crude oil storage tank 6 to avoid appearing the safety problem, guaranteed the security that the moisture content detected.
Since the propagation speeds of the ultrasonic waves in different liquids are different, and the distance between the ultrasonic sensor 43 and the plane capable of reflecting the ultrasonic waves emitted by the ultrasonic sensor 43 is fixed, the data processing module 42 can calculate the water content of the liquid according to the time of emitting the ultrasonic waves and the time of receiving the ultrasonic waves reflected by the plane through the ultrasonic sensor 43, and the water content of the liquid can reflect the state of the liquid to a certain extent, such as any one of water, crude oil or oil-water emulsion.
The ultrasonic sensor 43 transmits ultrasonic waves in the liquid, and the frequency of the ultrasonic waves may be several tens of kHz (kilohertz), but may be other frequencies. When the transmitted ultrasonic wave contacts a plane capable of reflecting the ultrasonic wave transmitted by the ultrasonic sensor 43, the plane reflects the ultrasonic wave to the ultrasonic sensor 43, then the ultrasonic sensor 43 sends ultrasonic wave data to the data processing module 42, the data processing module 42 detects the propagation time length from the time when the ultrasonic wave is transmitted by the ultrasonic sensor 43 to the time when the ultrasonic wave is received, then the propagation speed of the ultrasonic wave can be determined, and the water content of the liquid can be calculated.
The signal acquisition device 4 detects the water content of the liquid in the crude oil storage tank 6, and the data processing module 42 calculates the water content of the liquid in the crude oil storage tank 6 according to the detected propagation time length of the ultrasonic wave through the following formula 1.
wherein P is the water content, S is the distance between the ultrasonic sensor 43 and the plane reflecting the ultrasonic wave emitted by the ultrasonic sensor 43, i.e. the one-way propagation distance of the ultrasonic wave, which can be set to 60 mm in general, V Y is the propagation speed of the ultrasonic wave in the crude oil, V S is the propagation speed of the ultrasonic wave in water, Time mearsure is the propagation duration of the ultrasonic wave measured by the data processing module 42, and Time self is the delay duration measured by the data processing module 42.
The propagation speed of the ultrasonic wave in the crude oil is similar to a constant temperature of 46 ℃ because the propagation speed of the ultrasonic wave in the crude oil under different temperature conditions is different, but the propagation speed still conforms to the temperature compensation coefficient change rule, the propagation speed v 0 of the ultrasonic wave in the crude oil at 46 ℃ can be known by looking up a table, and then the propagation speed of the ultrasonic wave in the crude oil is calibrated by the following temperature compensation formula (formula 2).
v 1 ═ v 0 + (-3.5) (t 0 -25) (equation 2)
wherein v 1 is the propagation velocity of the ultrasonic wave in the crude oil after temperature compensation, v 0 is the propagation velocity of the ultrasonic wave in the crude oil at 46 ℃, 3.5 is the temperature compensation coefficient, t 0 is the actual temperature in the crude oil storage tank 6 detected by the temperature sensor 44, and 25 is the standard temperature under the experimental conditions.
The utility model discloses in, through set up ultrasonic sensor 43 and temperature sensor 44 in signal acquisition device 4, can the propagation velocity of ultrasonic wave in different media be taken into account comprehensively to and the influence of temperature to propagation velocity, fully considered the influence of temperature factor, the propagation velocity of ultrasonic wave in crude oil after using the temperature compensation comes the moisture content that calculates liquid through above-mentioned formula 1, thereby makes the moisture content of the final liquid that calculates of data processing module 42 more accurate.
In one possible implementation, as shown in fig. 3, the second member 412 includes a first support bar 4121, a second support bar 4122, a sensor fixing member 4123, and an ultrasonic reflection plate 4124; a first end of the first support bar 4121 and a first end of the second support bar 4122 are both connected to the bottom of the first member 411, a direction of the first support bar 4121 and a direction of the second support bar 4122 are both perpendicular to a liquid level inside the crude oil storage tank 6, a sensor fixing member 4123 is installed at a second end of the first support bar 4121, an ultrasonic reflection plate 4124 is installed at a second end of the second support bar 4122, and a plane in which the sensor fixing member 4123 is located is parallel to a plane in which the ultrasonic reflection plate 4124 is located, and the ultrasonic sensor 43 is sealed in the sensor fixing member 4123.
The ultrasonic reflection plate 4124 is a plane of the second member 412 that can reflect the ultrasonic waves emitted from the ultrasonic sensor 43.
Alternatively, the axis of the sensor holder 4123 and the axis of the ultrasonic reflection plate 4124 are aligned. Of course, the axes of the ultrasonic sensor 43 and the ultrasonic reflection plate 4124 may not be aligned, and it is sufficient to ensure that the ultrasonic reflection plate 4124 can reflect the ultrasonic waves emitted from the ultrasonic sensor 43 to the ultrasonic sensor 43.
In one possible implementation, as shown in figure 4, the second member 412 further comprises at least one third support 4125 rod coupled between the sensor mount 4123 and the ultrasonic reflective plate 4124.
Wherein the at least one third support 4125 bar is parallel to each other and the at least one third support 4125 bar is perpendicular to the first support 4121 or the second support 4122 bar.
the sensor fixing piece 4123 and the ultrasonic reflection flat plate 4124 are connected through the at least one third support 4125 rod, so that the relative position between the sensor fixing piece 4123 and the ultrasonic reflection flat plate 4124 is more stable, the ultrasonic reflection flat plate 4124 can more accurately receive and reflect ultrasonic waves emitted by the ultrasonic sensor 43 in the sensor fixing piece 4123, meanwhile, the ultrasonic sensor 43 can accurately receive the ultrasonic waves reflected by the ultrasonic flat plate, the accuracy of the ultrasonic waves reflected by the ultrasonic reflection flat plate 4124 and the accuracy of the ultrasonic waves received by the ultrasonic sensor 43 are improved, and a good foundation is laid for accurately measuring the water content subsequently.
In one possible implementation, as shown in fig. 5, the mechanical driving device 3 includes a servo motor 31, a magnetic coupler 32, a wire spool 33, and an encoder 34, the magnetic coupler 32 includes a first portion and a second portion, the servo motor 31 is connected with the first portion, the first portion is connected with the second portion through a magnetic force, the second portion is connected with the wire spool 33, the encoder 34 is located inside the servo motor 31, and the encoder 34 is used for generating the detection data during the rotation of the servo motor 31.
Wherein, the first end of the lifting rope 5 passes through the flange 61 arranged on the top of the crude oil storage tank 6 to be connected with the signal acquisition device 4, and the second end of the lifting rope 5 is wound on the wire spool 33. And, the sling 5 can be fixed at a position higher than the crude oil storage tank by a pulley so that the mechanical driving device 3 drives the signal collecting device to move up and down. Of course, the lifting rope 5 may be fixed by other methods, and the embodiment of the present invention is not limited thereto.
In order to ensure the requirement of measurement accuracy, the rotation speed of the servo motor 31 is set so that the signal acquisition device 4 connected with the sling rope 5 can move up and down according to a preset speed, and detection is carried out according to a preset time interval as long as the detection interval is ensured to meet the requirement. Typically the preset speed may be 1m/s and the preset time interval may be 10ms, so that the measurement interval is 166.67 microns at a minimum. Like this, can guarantee that signal acquisition device 4 detects the in-process of liquid moisture content and can detect with less measurement interval, satisfy measurement accuracy requirement completely.
In a possible implementation, as shown in fig. 6, the control device 2 comprises a PLC21, the PLC21 being connected to the servo motor 31. The control device receives a command from the host computer 1 via the PLC21, and controls the mechanical drive device 3 in accordance with the command.
the utility model discloses in the system of measurement moisture content that provides, couple together mechanical drive device and signal acquisition device through the hoist rope, the rotation drive signal acquisition device through the servo motor among the mechanical drive device reciprocates in the crude oil storage tank, the encoder can be at signal acquisition device's removal in-process among the servo motor, produces the testing data that is used for confirming signal acquisition device position, then mechanical drive device sends this testing data for the host computer through controlling means. Meanwhile, the signal acquisition device detects the water content of the liquid in the crude oil storage tank through the ultrasonic sensor, the temperature sensor and the data processing module, and the water content of the liquid is calculated by comprehensively considering the temperature factor and the ultrasonic propagation speed in the liquid, so that the finally calculated water content of the liquid is more accurate. And then the signal acquisition device sends the detected water content to an upper computer through a control device. Confirm signal acquisition device's position by the host computer according to the measured data, and then confirm crude oil storage tank's whole moisture content to the oil water interface in the crude oil storage tank is determined to the accuracy, has guaranteed the oil water interface's that determines accuracy, has simplified user's operation simultaneously, has saved the cost of labor, makes follow-up statistics crude oil output and the stock that can be more accurate, with the automated management in better realization oil field.
the above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The system for measuring the water content is characterized by comprising an upper computer (1), a control device (2), a mechanical driving device (3) and a signal acquisition device (4);
The upper computer (1) is electrically connected with the control device (2), the mechanical driving device (3) and the signal acquisition device (4) are respectively electrically connected with the control device (2), and the control device (2) is used for controlling the mechanical driving device (3) when receiving an instruction of the upper computer (1);
The mechanical driving device (3) is connected with the signal acquisition device (4) through a hoisting rope (5), the mechanical driving device (3) is used for driving the signal acquisition device (4) to move up and down in the crude oil storage tank (6), in the moving process of the signal acquisition device (4), detection data are acquired and sent to the upper computer (1) through the control device (2), and the detection data are used for determining the position of the signal acquisition device (4) in the crude oil storage tank (6); the signal acquisition device (4) is used for detecting the water content of liquid in the crude oil storage tank (6) and sending the detected water content to the upper computer (1) through the control device (2), and the upper computer (1) is used for determining an oil-water interface in the crude oil storage tank (6) according to the received detection data and the water content.
2. The system according to claim 1, characterized in that the signal acquisition device (4) comprises a housing (41), a data processing module (42), and an ultrasonic sensor (43) and a temperature sensor (44) which are communicable with the data processing module (42);
The housing (41) comprises a first part (411) and a second part (412) connected to the bottom of the first part (411);
the data processing module (42) is sealed in the first part (411), the temperature sensor (44) is sealed on the outer wall of the first part (411) and is positioned between the first part (411) and the second part (412), the ultrasonic sensor (43) is sealed in the second part (412), and the second part (412) comprises a plane capable of reflecting the ultrasonic wave emitted by the ultrasonic sensor (43), and the plane is vertical to the liquid level in the crude oil storage tank (6).
3. The system of claim 2, wherein the second member (412) comprises a first support bar (4121), a second support bar (4122), a sensor mount (4123), and an ultrasonic reflective plate (4124);
A first end of the first support rod (4121) and a first end of the second support rod (4122) are connected to the bottom of the first member (411), a direction of the first support rod (4121) and a direction of the second support rod (4122) are perpendicular to a liquid level inside the crude oil storage tank (6), the sensor fixing member (4123) is installed at a second end of the first support rod (4121), the ultrasonic reflection plate (4124) is installed at a second end of the second support rod (4122), a plane in which the sensor fixing member (4123) is located is parallel to a plane in which the ultrasonic reflection plate (4124) is located, and the ultrasonic sensor (43) is sealed in the sensor fixing member (4123).
4. The system of claim 3, wherein the axis of the sensor mount (4123) and the axis of the ultrasound reflective plate (4124) are aligned.
5. the system of claim 3 or 4, wherein the second member (412) further comprises at least one third support bar (4125), the at least one third support bar (4125) being connected between the sensor mount (4123) and the ultrasonic reflective plate (4124).
6. The system of claim 5, wherein the at least one third support bar (4125) is parallel to each other and the at least one third support bar (4125) is perpendicular to either the first support bar (4121) or the second support bar (4122).
7. The system of claim 2, wherein the ultrasonic sensor (43), the temperature sensor (44), and the data processing module (42) are hermetically sealed.
8. The system according to claim 1, characterized in that said mechanical driving means (3) comprise a servo motor (31), a magnetic coupling (32), a wire spool (33) and an encoder (34), said magnetic coupling (32) comprising a first portion and a second portion, said servo motor (31) being connected to said first portion, said first portion being magnetically connected to said second portion, said second portion being connected to said wire spool (33), said encoder (34) being located inside said servo motor (31), said encoder (34) being adapted to generate said detection data during rotation of said servo motor (31).
9. The system according to claim 8, wherein a first end of the sling rope (5) is connected to the signal acquisition device (4) through a flange (61) provided at the roof of the crude oil storage tank (6), and a second end of the sling rope (5) is wound on the spool (33).
10. The system according to claim 8, characterized in that said control means (2) comprise a programmable logic controller, PLC (21), said PLC (21) being connected to said servo motor (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920159641.XU CN209764798U (en) | 2019-01-29 | 2019-01-29 | System for measuring moisture content |
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| CN201920159641.XU CN209764798U (en) | 2019-01-29 | 2019-01-29 | System for measuring moisture content |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112034038A (en) * | 2020-08-31 | 2020-12-04 | 北京同创新明科技有限责任公司 | Storage tank water content detection system and control method thereof |
| CN116337178A (en) * | 2022-12-30 | 2023-06-27 | 江苏麦赫物联网科技有限公司 | Crude oil storage tank inner interface detection method and detection device |
-
2019
- 2019-01-29 CN CN201920159641.XU patent/CN209764798U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112034038A (en) * | 2020-08-31 | 2020-12-04 | 北京同创新明科技有限责任公司 | Storage tank water content detection system and control method thereof |
| CN116337178A (en) * | 2022-12-30 | 2023-06-27 | 江苏麦赫物联网科技有限公司 | Crude oil storage tank inner interface detection method and detection device |
| CN116337178B (en) * | 2022-12-30 | 2024-02-09 | 江苏麦赫物联网科技有限公司 | Crude oil storage tank inner interface detection method and detection device |
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