Automatic detection device for liquid volume in crude oil ship cabin

Abstract

The utility model provides an automatic detection device for the liquid volume in a crude oil ship cabin, which relates to the technical field of crude oil liquid volume detection and comprises an ultrasonic liquid level meter body, a wave guide tube and a mounting frame, a first multi-stage telescopic piece and a second multi-stage telescopic piece are arranged on the mounting frame, and the second multi-stage telescopic piece is symmetrically distributed relative to the first multi-stage telescopic piece. The first multi-stage telescopic piece is connected with a mounting plate, an ultrasonic liquid level meter body and an L-shaped rod which are distributed front and back are arranged on the mounting plate, and the L-shaped rod is connected with wave guide pipes which are located under a probe of the ultrasonic liquid level meter body and distributed at intervals. The second multi-stage telescopic piece is connected with a defoaming assembly, and the defoaming assembly allows the ultrasonic liquid level meter body, the wave guide tube and the L-shaped rod to penetrate through in the vertical direction. According to the device, the influence of foam in crude oil on liquid amount detection data can be reduced to the maximum extent, the detection precision can be doubled by adopting the defoaming assembly to be matched with the wave guide tube, and then the metering accuracy in the crude oil conveying process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crude oil liquid volume detection, and more specifically, to an automatic detection device for the liquid volume in the cabin of a crude oil ship. Background Art

[0002] At present, crude oil is transported by ships and stored in the cabins. During the transportation of crude oil, the liquid volume detection process is required. The significance of the detection is to ensure the accuracy of measurement. Currently, a liquid level gauge is generally used for automatic measurement, and an ultrasonic liquid level gauge is one of them.

[0003] An ultrasonic liquid level gauge is a digital liquid level instrument controlled by a microprocessor. In the measurement, ultrasonic pulses are emitted by a sensor (transducer). The sound waves are reflected by the liquid surface and received by the same sensor, converted into electrical signals through a piezoelectric crystal, and the distance from the sensor to the measured liquid surface is calculated by the time between the emission and reception of the sound waves. Due to the non-contact measurement, the measured medium is hardly restricted and can be widely used for the measurement of the height of various liquids and solid materials.

[0004] At present, during the transportation of crude oil, since the unprocessed crude oil contains various active substances, these substances are likely to generate foam in the crude oil. In addition, the crude oil constantly collides and shakes during high-speed transportation, and the high gas content in the crude oil will also generate foam, and the foam will interfere with the detection of the ultrasonic liquid level gauge, resulting in inaccurate liquid volume detection results. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems raised in the above background art, and then propose an automatic detection device for the liquid volume in the cabin of a crude oil ship.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] An automatic detection device for the liquid volume in the cabin of a crude oil ship includes an ultrasonic liquid level gauge body and a waveguide tube, and also includes a mounting frame. A first multi-stage telescopic member and second multi-stage telescopic members symmetrically distributed with respect to the first multi-stage telescopic member are arranged on the mounting frame. The first multi-stage telescopic member is connected to a mounting plate. An ultrasonic liquid level gauge body and an L-shaped rod are arranged front and back on the mounting plate. The L-shaped rod is connected to waveguide tubes that are spaced apart and directly below the probe of the ultrasonic liquid level gauge body. The second multi-stage telescopic member is connected to an anti-foaming component, and the anti-foaming component allows the ultrasonic liquid level gauge body, the waveguide tube, and the L-shaped rod to pass through in the vertical direction.

[0008] This device can minimize the influence of foam in crude oil on the liquid volume detection data. The use of the anti-foaming component in cooperation with the waveguide tube can double the detection accuracy, thereby improving the accuracy of measurement during the crude oil transportation process.

[0009] Furthermore, the defoaming component includes a ring, a nozzle, a defoamer tank, and a suction pump. The second multi-stage telescopic member is connected to a ring with a hollow interior. A defoamer tank and a suction pump connected to the defoamer tank are arranged on the ring. The suction pump is connected to the interior of the ring, and multiple circles of nozzles connected to its interior are arranged around the bottom circumference of the ring. The mounting plate moves up and down along the inner hole of the ring.

[0010] The above solution can effectively reduce the amount of foam in the crude oil near the area where the liquid volume is to be detected through the defoaming component.

[0011] Furthermore, a moisture sensor is arranged on the waveguide tube.

[0012] Furthermore, a hydrophilic coating is arranged on the outer wall of the waveguide tube, and an organic coating is arranged on the inner wall of the waveguide tube.

[0013] The above solution can also automatically detect the moisture content in the crude oil through the inserted moisture sensor while detecting the liquid volume of the crude oil, thereby effectively knowing the real-time moisture evaporation amount. Another function of the waveguide tube is to reduce the interference of water vapor on the ultrasonic level gauge body. In addition, coatings are arranged on both the inner and outer walls of the waveguide tube, thereby effectively reducing the amount of crude oil adhering to its surface after the liquid volume detection is completed.

[0014] Furthermore, a housing is arranged on the mounting plate. An ultrasonic level gauge body is arranged inside the housing, and a through hole allowing the probe of the ultrasonic level gauge body to extend out is opened on the housing. A heat insulation layer is arranged inside the housing.

[0015] Furthermore, an electromagnetic interference resistant layer is arranged inside the heat insulation layer.

[0016] The above solution can further reduce the interference of high temperature and electromagnetic waves in the cabin on the ultrasonic level gauge body through the heat insulation layer and the electromagnetic interference resistant layer, thereby further improving the detection accuracy during the use of the ultrasonic level gauge body.

[0017] Furthermore, a vision sensor spaced from the nozzles is arranged on the ring.

[0018] The above solution can take a real-time photo of the liquid surface after defoaming through the vision sensor and feed the image result back to the controller, and then compare it with the reference image stored in the controller. If the defoaming result meets the requirements, the subsequent automatic liquid volume detection process will start. If it does not meet the requirements, the defoaming process will continue by spraying the defoamer.

[0019] Compared with the prior art, the beneficial effects of the present utility model are:

[0020] 1. This device can minimize the impact of foam in crude oil on the liquid volume detection data. By using a defoaming component in combination with a waveguide tube, the detection accuracy can be doubled, thereby improving the accuracy of metering during the transportation of crude oil.

[0021] 2. Additionally, while detecting the liquid volume of crude oil, the automatic detection of the water content in crude oil can be achieved through an insertable moisture sensor, thereby effectively knowing the real-time water evaporation amount. Another function of the waveguide tube is to reduce the interference of water vapor on the ultrasonic level gauge body.

[0022] 3. Finally, through the thermal insulation layer and the electromagnetic interference resistant layer, the interference of high temperature and electromagnetic waves in the cabin on the ultrasonic level gauge body can be further reduced, thereby improving the detection accuracy during the use of the ultrasonic level gauge body. Description of the Drawings

[0023] Figure 1 is the overall structural schematic diagram of the present utility model;

[0024] Figure 2 is the schematic diagram of the nozzle installation;

[0025] Figure 3 is the schematic diagram of the interior of the housing;

[0026] Figure 4 is the schematic diagram of the movement of the defoaming component;

[0027] Reference Numerals:

[0028] 1. Mounting frame; 21. First multi-stage telescopic member; 22. Second multi-stage telescopic member; 23. Ring; 24. Nozzle; 26. Defoamer tank; 27. Suction pump; 28. Mounting plate; 3. Ultrasonic level gauge body; 31. L-shaped rod; 32. Waveguide tube; 33. Moisture sensor; 41. Housing; 42. Thermal insulation layer; 43. Electromagnetic interference resistant layer; 44. Through hole. Detailed Embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model. The present utility model will be further described in conjunction with the drawings and embodiments:

[0030] Such as Figures 1 to 4As shown, an automatic liquid volume detection device for the cabin of a crude oil ship includes an ultrasonic level gauge body 3 and a waveguide tube 32, and also includes a mounting bracket 1. On the mounting bracket 1, there is a first multi-stage telescopic member 21 and a second multi-stage telescopic member 22 symmetrically distributed with respect to the first multi-stage telescopic member 21 (both the first multi-stage telescopic member 21 and the second multi-stage telescopic member 22 adopt multi-stage telescopic rods). The first multi-stage telescopic member 21 is connected to a mounting plate 28. On the mounting plate 28, there are an ultrasonic level gauge body 3 and an L-shaped rod 31 distributed front and back. The L-shaped rod 31 is connected to waveguide tubes 32 that are spaced apart and directly below the probe of the ultrasonic level gauge body 3. The second multi-stage telescopic member 22 is connected to an anti-foaming component, and the anti-foaming component allows the ultrasonic level gauge body 3, the waveguide tubes 32, and the L-shaped rod 31 to pass through in the vertical direction.

[0031] Specifically, the anti-foaming component includes a ring 23, a spray head 24, an anti-foaming agent tank 26, and a suction pump 27. The second multi-stage telescopic member 22 is connected to a hollow ring 23. On the ring 23, there are an anti-foaming agent tank 26 and a suction pump 27 connected to the anti-foaming agent tank 26. The suction pump 27 is connected to the inside of the ring 23, and a plurality of circles of spray heads 24 connected to its inside are arranged around the bottom circumference of the ring 23. The mounting plate 28 moves up and down along the inner hole of the ring 23. For further optimization of the solution, the spray head 24 adopts an atomizing spray head.

[0032] It should be noted that the first multi-stage telescopic member 21, the second multi-stage telescopic member 22, the ultrasonic level gauge body 3, and the suction pump 27 are all electrically connected to the controller, and the controller is not shown specifically in the figure and is installed outside the crude oil tank body.

[0033] The working process of the present utility model:

[0034] First, install this device at the hatch position of the crude oil tank of the ship. After installation, make the probe of the ultrasonic level gauge body 3 perpendicular to the crude oil liquid level, and then it can be put into use. Before each liquid volume detection, at this time, the controller first controls the second multi-stage telescopic member 22 to move, thereby driving the ring 23 to move to the area below the waveguide tube 32 and close to the crude oil liquid level (the first multi-stage telescopic member 21 is initially in the shortest range contraction state). Then, the controller controls the suction pump 27 to work, suck the anti-foaming agent from the anti-foaming agent tank 26 and inject it into the inside of the ring 23, and finally spray it out from several spray heads 24, thereby reducing the amount of foam near the crude oil liquid level to be detected. After completing the anti-foaming process, then the second multi-stage telescopic member 22 drives the anti-foaming component to move back to the initial position, as shown in the attached Figure 1As shown in the figure, the random controller controls the movement of the first multi-stage telescopic member 21, so that the waveguide 32 is inserted below the crude oil liquid level. At this time, an ultrasonic detection area with reduced liquid level fluctuations and bubble volume can be further formed. The waveguide 32 is arranged directly below the probe of the ultrasonic level gauge body 3 for ultrasonic transmission, thereby reducing the echo interference generated on the inner wall of the waveguide 32, and further improving the detection accuracy of the ultrasonic level gauge. The combination of the two parts can minimize the impact of foam on the detection data, and the use effect is better.

[0035] Compared with the prior art, the device can minimize the impact of foam in crude oil on the liquid volume detection data. The use of the defoaming component in cooperation with the waveguide 32 can double the detection accuracy, thereby improving the accuracy of metering during the crude oil transportation process.

[0036] In some embodiments, as Figure 4 shown, an inserted moisture sensor 33 is arranged on the waveguide 32.

[0037] For the further optimization of the above embodiment scheme, a hydrophilic coating is arranged on the outer wall of the waveguide 32, and an organic coating is arranged on the inner wall of the waveguide 32. This embodiment can realize the automatic detection of the moisture content in the crude oil through the inserted moisture sensor 33 while detecting the crude oil liquid volume, thereby effectively knowing the real-time moisture evaporation amount. Another function of the waveguide 32 is to reduce the interference of water vapor on the ultrasonic level gauge body 3. In addition, coatings are arranged on both the inner and outer walls of the waveguide 32 to effectively reduce the amount of crude oil adhering to its surface after the liquid volume detection is completed.

[0038] In other embodiments, a housing 41 is arranged on the mounting plate 28. The ultrasonic level gauge body 3 is arranged inside the housing 41, and a through hole 44 allowing the probe of the ultrasonic level gauge body 3 to extend out is arranged on the housing 41. A heat insulation layer 42 is arranged inside the housing 41, and an electromagnetic interference resistant layer 43 is arranged on the inner side of the heat insulation layer 42. This embodiment can further reduce the interference of high temperature and electromagnetic waves in the cabin on the ultrasonic level gauge body 3 through the heat insulation layer 42 and the electromagnetic interference resistant layer 43, thereby further improving the detection accuracy during the use of the ultrasonic level gauge body 3. For the further optimization of the scheme, a temperature and humidity sensor is arranged on the housing 41. The temperature and humidity sensor is not shown in the figure, and it can transmit the temperature and humidity values in the crude oil cabin to the display screen of the controller in real time for the convenience of the operator to know.

[0039] In other embodiments, a visual sensor is provided at the bottom of the circular ring 23 and is spaced from the nozzle 24; this embodiment is not shown in the figure. In this embodiment, the visual sensor can take a real-time picture of the liquid surface after defoaming and feed the image result back to the controller, and then compare it with the reference image stored in the controller. If the defoaming result meets the requirements, the subsequent automatic liquid volume detection process is started; if not, the defoaming agent is continuously sprayed for the defoaming process.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic detection device for the amount of liquid in a crude oil tanker, comprising an ultrasonic level meter body (3) and a waveguide (32), characterized in that: The invention also comprises a mounting frame (1), on which a first multi-stage telescopic member (21) and a second multi-stage telescopic member (22) symmetrically distributed with respect to the first multi-stage telescopic member (21) are arranged, the first multi-stage telescopic member (21) is connected to a mounting plate (28), on which an ultrasonic level meter body (3) and an L-shaped rod (31) distributed front and rear are arranged, the L-shaped rod (31) is connected to a waveguide (32) located directly below a probe of the ultrasonic level meter body (3) and distributed at intervals, the second multi-stage telescopic member (22) is connected to a defoaming assembly, and the defoaming assembly allows the ultrasonic level meter body (3), the waveguide (32) and the L-shaped rod (31) to pass through in a vertical direction.

2. The automatic detection device for liquid volume in a crude oil tanker according to claim 1 is characterized in that: The defoaming component comprises a circular ring (23), a nozzle (24), a defoaming agent box (26) and a suction pump (27); the second multi-stage telescopic member (22) is connected to the circular ring (23) with a hollow interior; the circular ring (23) is provided with a defoaming agent box (26) and a suction pump (27) connected to the defoaming agent box (26); the suction pump (27) is connected to the interior of the circular ring (23); and the bottom circumference of the circular ring (23) is provided with a plurality of circles of nozzles (24) connected to the interior thereof; and the mounting plate (28) moves up and down along the inner hole of the circular ring (23).

3. The automatic detection device for liquid volume in a crude oil tanker according to claim 1 is characterized in that: The waveguide (32) is provided with a moisture sensor (33).

4. The automatic detection device for liquid volume in a crude oil tanker according to claim 3 is characterized in that: A hydrophilic coating is provided on the outer wall of the waveguide (32), and an organic coating is provided on the inner wall of the waveguide (32).

5. The automatic detection device for liquid volume in a crude oil tanker according to claim 1 is characterized in that: The mounting plate (28) is provided with a shell (41), an ultrasonic level meter body (3) is provided inside the shell (41), a through hole (44) is provided on the shell (41) for allowing a probe of the ultrasonic level meter body (3) to extend out, and a heat insulation layer (42) is provided inside the shell (41).

6. The automatic detection device for the amount of liquid in a crude oil tanker tank according to claim 5 is characterized in that: An anti-electromagnetic interference layer (43) is provided on the inner side of the thermal insulation layer (42).

7. The automatic detection device for liquid volume in a crude oil tanker according to claim 2 is characterized in that: The circular ring (23) is provided with a visual sensor spaced apart from the nozzle (24).

Images