阅读说明：本技术 一种液体存储仓、fpso船及液体存储仓的设计方法 (Liquid storage bin, FPSO ship and design method of liquid storage bin ) 是由 金春毅 刘毅俊 石小念 于 2021-07-21 设计创作，主要内容包括：本发明公开了一种液体存储仓、FPSO船及液体存储仓的设计方法,液体存储仓包括仓壳和雷达液位计,仓壳的底部具有高于所述液位的突起物,所述液体存储仓还包括反射板,所述反射板设置于所述突起物上,并位于所述突起物和所述雷达液位计的发射端之间,所述反射板的反射面相对所述雷达液位计的雷达波束射入方向的角度小于90°。通过在船仓内的突起物上方设置反射板,使得突起物在接收雷达超高频电磁波时能够将无效信号折射到其他方向,从而减小假回波的能量密度,以达到提高雷达测深装置测量精度的效果。(The invention discloses a liquid storage bin, an FPSO ship and a design method of the liquid storage bin, wherein the liquid storage bin comprises a bin shell and a radar liquid level meter, the bottom of the bin shell is provided with a protrusion higher than the liquid level, the liquid storage bin also comprises a reflecting plate, the reflecting plate is arranged on the protrusion and positioned between the protrusion and a transmitting end of the radar liquid level meter, and the angle of a reflecting surface of the reflecting plate relative to the radar wave beam incidence direction of the radar liquid level meter is smaller than 90 degrees. Set up the reflecting plate through the protruding thing top in the ship storehouse for the protruding thing can be with invalid signal refraction other directions when receiving radar hyperfrequency electromagnetic wave, thereby reduces the energy density of false echo, in order to reach the effect that improves radar depth finder measurement accuracy.)

1. The utility model provides a liquid storage bin, includes storehouse shell, radar level gauge is used for detecting the liquid level height in the storehouse shell, the bottom of storehouse shell has and is higher than the protrusion of liquid level, a serial communication port, liquid storage bin still includes the reflecting plate, the reflecting plate set up in on the protrusion, and be located protrusion with between the transmitting end of radar level gauge, the plane of reflection of reflecting plate is relative the angle of radar wave beam injection direction of radar level gauge is less than 90.

2. The liquid storage cartridge as claimed in claim 1, wherein said protrusion is a reinforcement and/or a heating coil.

3. The fluid storage tank of claim 1, wherein the reflecting surface of the reflecting plate has an angle of 65 ° or more with respect to the incident direction of the radar beam.

4. A liquid storage tank as claimed in claim 3, wherein the angle of the reflective plates on the projections with respect to the incident direction of the radar beam is less than or equal to 72 °.

5. The liquid storage tank as claimed in claim 1, wherein a projection width dimension of said reflection plate in the radar beam incident direction is equal to or larger than a projection width dimension of said projection.

6. The liquid storage tank as defined in claim 5 wherein, a projected width dimension of said reflective plate along said radar beam injection direction is at least 1.1 times a projected width dimension of said protrusion.

7. The liquid storage cartridge as claimed in claim 1, wherein said reflective plate comprises: the reflecting plate comprises a reflecting plate body and a connecting piece, wherein the reflecting plate body is arranged above the protrusion, the reflecting surface is formed on the upper surface of the reflecting plate body, one end of the connecting piece is connected with the protrusion or the bin shell, and the other end of the connecting piece is connected with the reflecting plate.

8. A liquid storage cartridge as claimed in claim 7: the number of the connecting pieces is multiple, and the connecting pieces are sequentially arranged along the length direction of the protrusion.

9. FPSO-vessel, characterized in that it comprises a liquid storage tank according to any one of claims 1-8, the hull of which is of single-hull construction, the projections of which are stiffeners for the hull, the bottom of which forms the bottom of the FPSO-vessel.

10. A method of designing a liquid storage bin, the method comprising the steps of:

and arranging a radar reflecting plate between the radar liquid level meter and the bottom of the bin shell, so that the radar reflecting plate is arranged above the protrusions at the bottom of the bin shell, and the angle between the reflecting surface of the reflecting plate and the incidence direction of radar beams is smaller than 90 degrees.

11. The method of claim 10, wherein the step of disposing a radar reflecting plate between the radar level gauge and the bottom of the housing such that the radar reflecting plate is disposed above the protrusion on the bottom of the housing, and such that the angle between the reflecting surface of the reflecting plate and the incident direction of the radar beam is less than 90 ° further comprises: the angle between the radar reflection plate and the radar beam is controlled between 65 DEG and 72 DEG according to the radar beam incidence angle.

12. The method of designing a liquid storage tank as claimed in claim 10 or 11, wherein the step of disposing a radar reflecting plate between the radar level gauge and the bottom of the tank housing so that the radar reflecting plate is covered above the protrusion on the bottom of the tank housing and so that the angle between the reflecting surface of the reflecting plate and the incident direction of the radar beam is less than 90 ° further comprises the steps of: measuring the projection width of the protrusion along the incidence direction of the radar beam;

arranging a radar reflecting plate between the radar liquid level meter and the bottom of the bin shell, enabling the radar reflecting plate to cover the upper part of the protrusion at the bottom of the bin shell, and enabling the angle between the reflecting surface of the reflecting plate and the incident direction of the radar wave beam to be smaller than 90 degrees, wherein the step further comprises the following steps: and enabling the projection width of the radar reflecting plate to be larger than or equal to the projection width of the protrusion.

13. The method of claim 10, wherein the step of disposing a radar reflecting plate between the radar level gauge and the bottom of the housing such that the radar reflecting plate covers the protrusion on the bottom of the housing and such that the angle between the reflecting surface of the reflecting plate and the incident direction of the radar beam is less than 90 ° further comprises the steps of: and fixing the radar reflecting plate by using a link component.

Technical Field

The invention relates to the field of ships, in particular to a liquid storage bin, an FPSO ship and a design method of the liquid storage bin.

Background

In order to measure the height of the liquid level in the liquid storage bin, people generally use radar as a measuring tool, specifically, ultra-high frequency electromagnetic waves of the radar are transmitted to the liquid level direction of a detected container, the electromagnetic waves are reflected when contacting the liquid level, and a depth measuring device calculates the height of the liquid level by detecting the time difference of the transmitted waves and echoes to achieve the purpose of non-contact measurement. In the actual action process of the radar depth measurement device, various obstacles are inevitably and sometimes arranged in the antenna conical emission area of the radar depth measurement device. The barriers can reflect the transmitted ultrahigh frequency electromagnetic waves, so that the accuracy requirement of radar depth measurement is influenced. In addition, the FPSO ship adopts the monocoque storehouse body more, and can set up T row at the bottom deck for the material intensity of increase monocoque, when utilizing the bottom of FPSO ship as the bottom of a storehouse in liquid storage storehouse, when the liquid level in the liquid storage storehouse was less than T row, the super high frequency electromagnetic wave that the radar produced can be arranged the reflection by T earlier, causes the situation that measured data and actual liquid level are inconsistent.

Disclosure of Invention

The invention aims to overcome the defect that in the prior art, when an obstacle exists between a radar depth sounding device and a liquid level, the measurement precision is not high, and provides a liquid storage bin, an FPSO ship and a design method of the liquid storage bin.

The invention solves the technical problems through the following technical scheme:

the utility model provides a liquid storage bin, includes storehouse shell, radar level gauge, the radar level gauge is used for detecting the liquid level height in the storehouse shell, the bottom of storehouse shell has and is higher than the protrusion of liquid level, liquid storage bin still includes the reflecting plate, the reflecting plate set up in on the protrusion, and be located the protrusion with between the transmitting end of radar level gauge, the plane of reflection of reflecting plate is relative the angle that the direction was penetrated to radar wave beam of radar level gauge is less than 90.

This liquid storage storehouse sets up the reflecting plate through the protruding thing top in the ship storehouse for protruding thing can be with invalid signal refraction other directions when receiving radar hyperfrequency electromagnetic wave, thereby reduces the energy density of false echo, in order to reach the effect that improves radar depth finder measurement accuracy.

Preferably, the protrusion is a stiffener and/or a heating coil.

Preferably, the angle of the reflecting surface of the reflecting plate relative to the incidence direction of the radar beam is more than or equal to 65 degrees.

In this scheme, adopt above-mentioned structural style, when having the requirement to reflecting plate projection width, can reduce the reflecting plate material quantity.

Preferably, the angle of the reflector plate on the protrusion relative to the incident direction of the radar beam is less than or equal to 72 degrees.

In this scheme, adopt above-mentioned structural style, make the angle of reflecting plate refraction invalid signal bigger to further reduce the energy density of false echo, and further improve radar depth sounding device measurement accuracy.

Preferably, a projection width dimension of the reflector along the radar beam incident direction is greater than or equal to a projection width dimension of the protrusion.

In this scheme, adopt above-mentioned structural style, make the reflecting plate can cover the protrusion comprehensively to further improve the depth measurement precision.

Preferably, a projection width dimension of the reflector plate along the radar beam incidence direction is at least 1.1 times of a projection width dimension of the protrusion.

In this scheme, adopt above-mentioned structural style, guarantee that the reflecting plate can cover the protrusion comprehensively, thoroughly avoid the radar wave beam to be reflected by the protrusion.

Preferably, the reflection plate includes: the reflecting plate comprises a reflecting plate body and a connecting piece, wherein the reflecting plate body is arranged above the protrusion, the reflecting surface is formed on the upper surface of the reflecting plate body, one end of the connecting piece is connected with the protrusion or the bin shell, and the other end of the connecting piece is connected with the reflecting plate.

In the scheme, the reflecting plate is ensured to be fixed in position and prevented from displacing by adopting the structural form.

Preferably, the number of the connecting pieces is multiple, and the connecting pieces are sequentially arranged along the length direction of the protrusion.

In the scheme, the fixing strength of the reflecting plate is increased by adopting the structural form, and the service durability is improved.

An FPSO ship, characterized in that, it includes as above the liquid storage storehouse, the shell of liquid storage storehouse is single shell structure, the protuberance of liquid storage storehouse is the reinforcement of shell, the bottom of shell forms the hull bottom of FPSO ship.

This FPSO ship is through setting up this liquid storage storehouse to the hull bottom that will be single-shell structure is regarded as the hull bottom of FPSO ship, in order when utilizing the reinforcement to strengthen the hull bottom and guarantee intensity, avoid radar level gauge mismeasurement reinforcement to lead to the liquid level data mistake through setting up the reflecting plate.

This structure sets up the scheme, when effectively simplifying FPSO ship structure, guarantees the accurate degree that the radar level gauge detected.

A method of designing a liquid storage bin, the method comprising the steps of:

arranging a radar reflecting plate between the radar liquid level meter and the bottom of the bin shell, enabling the radar reflecting plate to be arranged above the protrusions at the bottom of the bin shell, and enabling the angle between the reflecting surface of the reflecting plate and the incident direction of radar beams to be smaller than 90 degrees;

in this scheme, adopt above-mentioned method, set up the reflecting plate through the protruding thing top in the cabin for protruding thing can be with invalid signal refraction other directions when receiving radar hyperfrequency electromagnetic wave, thereby reduces the energy density of false echo, in order to reach the effect that improves radar depth sounding device measurement accuracy

Preferably, in the step of disposing a radar reflecting plate between the radar level gauge and the bottom of the cabinet such that the radar reflecting plate is disposed above the protrusion on the bottom of the cabinet and such that an angle between a reflecting surface of the reflecting plate and an incident direction of the radar beam is less than 90 °, an angle between the radar reflecting plate and the radar beam is controlled to be 65 ° to 72 ° according to the incident angle of the radar beam.

In the scheme, the method can ensure that the reflection angle is large enough and avoid excessive materials for the reflecting plate.

Preferably, before the step of arranging a radar reflecting plate between the radar liquid level gauge and the bottom of the bin shell, covering the radar reflecting plate above the protrusion at the bottom of the bin shell, and enabling the angle between the reflecting surface of the reflecting plate and the incidence direction of the radar wave beam to be smaller than 90 degrees, the method further comprises the following steps: measuring the projection width of the protrusion along the incidence direction of the radar beam;

arranging a radar reflecting plate between the radar liquid level meter and the bottom of the bin shell, enabling the radar reflecting plate to cover the upper part of the protrusion at the bottom of the bin shell, and enabling the angle between the reflecting surface of the reflecting plate and the incident direction of the radar wave beam to be smaller than 90 degrees.

In the scheme, the method is adopted, so that the projection can be completely covered by the reflecting plate, and the depth measurement precision is further improved.

Preferably, after the step of arranging a radar reflecting plate between the radar liquid level gauge and the bottom of the bin shell, covering the radar reflecting plate above the protrusion at the bottom of the bin shell, and making the angle between the reflecting surface of the reflecting plate and the incidence direction of the radar wave beam smaller than 90 degrees, the method further comprises the following steps: and fixing the radar reflecting plate by using a link component.

In the scheme, the method is adopted to ensure the position of the reflecting plate to be fixed and prevent displacement.

The positive progress effects of the invention are as follows:

this liquid storage storehouse, FPSO ship and liquid storage storehouse's design method sets up the reflecting plate through the protrusion upper portion in liquid storage storehouse for the barrier can be with invalid signal refraction other directions when receiving radar hyperfrequency electromagnetic wave, thereby reduces the energy density of false echo, in order to reach the effect that improves radar depth finder measurement accuracy.

Drawings

Fig. 1 is a schematic diagram illustrating a liquid level detection of a liquid storage tank of an FPSO vessel according to a preferred embodiment of the present invention.

Fig. 2 is a schematic structural view of the bottom of the shell of the liquid storage bin according to the preferred embodiment of the invention.

FIG. 3 is a schematic diagram of a reflector structure according to a preferred embodiment of the invention.

Fig. 4 is a flow chart illustrating a method for designing a liquid storage bin according to a preferred embodiment of the invention.

Description of reference numerals:

bin shell 1

T row 12

Radar level gauge 2

Radar reflecting plate 3

Reflecting surface 31

Weld zone 4

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

As shown in fig. 1-3, the present embodiment provides an FPSO vessel having a liquid storage tank therein, wherein the liquid storage tank includes a tank shell 1 and a radar level gauge 2 for detecting a liquid level in the liquid storage tank. The bottom of the bin shell 1 is provided with T rows 12 for strengthening the intensity of the bin body, a radar reflecting plate 3 covers the T rows 12, and the angle of a reflecting surface 31 of the reflecting plate relative to the incident direction of radar beams of the radar liquid level meter 2 is 70 degrees. Of course, the angle may be adjusted to any degree between 65 ° and 72 ° in other embodiments.

Through such structure, utilize the refraction effect of reflecting plate 3, make the radar hyperfrequency electromagnetic wave of 12 rows of originally directive T refract other directions by the reflecting plate, thereby reduce the energy density of false echo, in order to reach the effect that improves radar depth finder measurement accuracy, avoid under the structure in prior art's liquid storage storehouse, under the lower condition of liquid level in the liquid storage storehouse, the radar wave beam of radar level gauge 2 is arranged 12 reflections by T, lead to the condition of acquireing wrong liquid level to take place. In addition, in other embodiments, the radar reflection plate 3 may also be disposed at the upper surface of other protrusions at the bottom of the tank shell to also avoid the radar beam of the radar level gauge 2 from being reflected by these protrusions, resulting in false detection.

In this embodiment, the body of the reflection plate 3 is connected with the T-row 12 in sequence through a plurality of welding positions 4 along the length direction of the T-row 12, and actually, the reflection plate can also be connected in a manner of fastening or screw fixing, and the reflection plate can also be directly connected with the bin shell 1. The projection width of the reflector 3 along the incident direction of the radar beam is equal to the projection width of the T-row 12, but the projection width of the reflector 3 may be larger than the projection width of the T-row 12 in other embodiments, so as to achieve the effect of covering the protrusions completely.

Fixed reflecting plate 3 is connected through many places, can increase reflecting plate 3's fixed strength, prevents the displacement to make 3 projection widths of reflecting plate more than or equal to T arrange 12 projection widths, with improvement radar measurement accuracy.

In this embodiment, the hull 1 of the liquid storage tank is of a single hull structure, and the bottom of the hull 1 is used to directly form the bottom of the FPSO vessel. Through this kind of structure setting, will be single-shelled structure's storehouse shell bottom as the hull bottom of FPSO ship to when utilizing T row 12 to strengthen storehouse shell bottom assurance intensity, avoid radar level gauge 2 mismeasurement T row 12 to lead to the liquid level data mistake through setting up reflecting plate 3. The FPSO ship ensures the accuracy of liquid level detection in the liquid storage bin on the premise of simple structure and relatively light weight.

As shown in fig. 4, the present embodiment further provides a method for designing a liquid storage bin, including the following steps:

s1, arranging a radar reflecting plate between the radar liquid level meter and the bottom of the bin, enabling the radar reflecting plate to be arranged above the T row, and enabling the angle between the reflecting surface of the reflecting plate and the incidence direction of the radar beams to be equal to 70 degrees according to the incidence angle of the radar beams.

In this embodiment, by the design method, the reflecting plate is arranged above the T-row, so that the T-row can reflect the invalid signal to other directions when receiving the radar ultrahigh frequency electromagnetic wave, thereby reducing the energy density of the false echo and improving the measurement accuracy of the radar depth sounding device.

In addition, before step S1 of the designing method, step S0 is further included, and the projection width of the T-row in the radar beam incident direction is measured in bins. Meanwhile, after the width data of the T-line is obtained, the bin further includes making the projection width of the radar reflection plate equal to the projection width of the T-line in step S1. Through the specific arrangement of the steps, the reflecting plate can completely cover the protrusion, so that the depth measurement precision is further improved.

Further, after step S1 of the designing method, step S2 is further included to fix the radar reflection plate by a welding portion.

In this embodiment, the method can ensure a sufficiently large reflection angle and avoid excessive material consumption of the reflection plate. The reflecting plate is ensured to be fixed in position, and displacement is prevented. The reflecting plate can fully cover the protrusion, thereby further improving the depth measurement precision.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.