A liquid level telemetry draft detection device, method and ship

Abstract

This invention provides a liquid level telemetry draft detection device, method, and ship. By analyzing the relationship between the installation location of the draft sensor and the actual draft measurement of the ship when the installation location is not on the hull plating, a liquid level telemetry draft detection method is proposed, which makes the measured values ​​of the liquid level telemetry system more accurate.

Description

Technical Field

[0001] This invention relates to the field of marine technology, and in particular to a liquid level telemetry and draft detection device, method, and ship. Background Technology

[0002] With the application of technologies such as VLSI and microprocessors, ship equipment systems are becoming increasingly intelligent. To achieve precise control of ship attitude and ensure operational safety, maritime navigation demands higher accuracy in liquid level readings that can alter ship attitude. Particularly in recent years, the vigorous development of green energy has led to a surge in demand for offshore wind power installation platforms. Furthermore, compared to ordinary ships, wind power installation platforms are generally larger and more rectangular, making the accuracy of the platform's liquid level telemetry draft sensors crucial for monitoring its attitude during operation. However, during the design and modeling of wind power installation platforms, different selections of the installation locations for the relevant draft sensors in the liquid level telemetry system will result in varying measurement errors between the system's readings and the actual draft level. Summary of the Invention

[0003] This invention provides a liquid level telemetry draft detection device, method, and ship. By analyzing the relationship between the installation location of the draft sensor and the actual draft measurement of the ship when the installation location is not on the hull plating, a liquid level telemetry draft detection method is proposed, which makes the measured values ​​of the liquid level telemetry system more accurate.

[0004] In a first aspect, embodiments of the present invention provide a liquid level telemetry draft detection device, the device comprising: a processing unit, and at least a pair of draft sensors symmetrically installed in the hull on the port and starboard sides;

[0005] The draft sensor includes an inlet pipe, a vent pipe, and a pressure sensor. One end of the inlet pipe passes through the outer side plating and communicates with the outside water, while the other end is connected to the pressure sensor. One end of the vent pipe is connected to the inlet pipe, while the other end passes through the deck and communicates with the atmosphere. The pressure sensor is communicatively connected to the processing unit and can detect the hydraulic pressure at the end connected to the inlet pipe and send the pressure value to the processing unit.

[0006] The processing unit is capable of:

[0007] The port side draft sensor's measured height is determined based on the pressure value transmitted by the port side draft sensor's pressure sensor, and the starboard side draft sensor's measured height is determined based on the pressure value transmitted by the starboard side draft sensor's pressure sensor.

[0008] Based on the hull width, the distance between the port side pressure sensor installation position and the outer side plating, the distance between the starboard side draft sensor installation position and the outer side plating, the measurement height of the port side draft sensor and the measurement height of the starboard side draft sensor, the actual measured draft height on the port side and the actual measured draft height on the starboard side are determined.

[0009] The actual drafts on the port and starboard sides are determined based on the installation height of the pressure sensor, the actual draft measured on the port side, and the actual draft measured on the starboard side.

[0010] In some embodiments, the pressure sensor is communicatively connected to the processing unit, including:

[0011] The pressure sensor is connected to the processing unit via wired and / or wireless connection.

[0012] In some embodiments, the inlet pipe is equipped with a switching valve for opening / closing the connection between the inlet pipe and the vent pipe and the pressure sensor.

[0013] In some embodiments, the installation areas of the at least one pair of draft sensors symmetrically installed on the port and starboard sides within the hull include the bow, stern, and / or midships of the hull.

[0014] In a second aspect, embodiments of the present invention provide a method for detecting draft by remote liquid level measurement, based on the liquid level remote measurement and draft detection device described in any embodiment of the first aspect, the method comprising:

[0015] Obtain the pressure values ​​transmitted by the pressure sensors of the port and starboard draft sensors.

[0016] The port side draft sensor measurement height is determined based on the pressure value sent by the pressure sensor of the port side draft sensor, and the starboard side draft sensor measurement height is determined based on the pressure value sent by the pressure sensor of the starboard side draft sensor.

[0017] Based on the hull width, the distance between the port side pressure sensor installation position and the outer side plating, the distance between the starboard side draft sensor installation position and the outer side plating, the measurement height of the port side draft sensor and the measurement height of the starboard side draft sensor, the actual measured draft height on the port side and the actual measured draft height on the starboard side are determined.

[0018] The actual drafts on the port and starboard sides are determined based on the installation height of the pressure sensor, the actual draft measured on the port side, and the actual draft measured on the starboard side.

[0019] In some embodiments, determining the port side draft sensor measurement height based on the pressure value transmitted by the pressure sensor of the port side draft sensor, and determining the starboard side draft sensor measurement height based on the pressure value transmitted by the pressure sensor of the starboard side draft sensor, includes:

[0020] The port side draft sensor measures the height H1 = P1 / ρg, where P1 is the pressure value sent by the pressure sensor of the port side draft sensor, ρ is the density of the liquid in the external water area, and g is the acceleration due to gravity.

[0021] The starboard draft sensor measures the height H2 = P2 / ρg, where P2 is the pressure value sent by the pressure sensor of the starboard draft sensor.

[0022] In some embodiments, determining the actual measured draft on the port side and the actual measured draft on the starboard side based on the hull width, the distance between the port side pressure sensor installation position and the side plating, the distance between the starboard side draft sensor installation position and the side plating, the measurement height of the port side draft sensor, and the measurement height of the starboard side draft sensor includes:

[0023] The actual draft measured on the starboard side

[0024] The actual draft measured on the port side

[0025] Wherein, W is the hull width, L1 is the distance from the port side pressure sensor installation position to the outer side plate, and L2 is the distance from the starboard side draft sensor installation position to the outer side plate.

[0026] In some embodiments, determining the actual draft on the port side and the actual draft on the starboard side based on the pressure sensor installation height, the actual draft measured on the port side, and the actual draft measured on the starboard side includes:

[0027] Actual draft on starboard side

[0028] Actual draft on port side

[0029] Where h is the installation height of the pressure sensor.

[0030] Thirdly, embodiments of the present invention provide a ship, the ship including a liquid level telemetry draft detection device as described in any embodiment of the first aspect.

[0031] The beneficial effects of the above embodiments of the present invention include:

[0032] This allows the liquid level telemetry draft sensor to be arranged without being restricted by the installation position of the hull plate during the production design modeling and layout process, greatly improving the flexibility of sensor arrangement.

[0033] The calculation method is simple. After measuring the relevant position information of the sensor after its deployment in the model, the calculation is performed through geometric relationships. The calculated result is then fed back to the liquid level telemetry system software engineer for software correction and output to the human-machine interface. This ensures the accuracy of the measurement data without adding any extra costs.

[0034] The effectiveness of this method has been fully verified during the mooring test through actual application on a completed wind power installation platform project. The actual draft calculated and corrected by this method is basically consistent with the draft height calculated and displayed by the system. Attached Figure Description

[0035] The accompanying drawings illustrate, by way of example and not limitation, the various embodiments discussed herein.

[0036] Figure 1 A schematic diagram showing the arrangement of draft sensors on a vessel used for wind power installation operations.

[0037] Figure 2 A cross-sectional view showing the arrangement of draft sensors on a wind power installation platform vessel;

[0038] Figure 3 A schematic diagram showing the working status of the draft sensor;

[0039] Figure 4 A graph showing the relationship between the height measured by the draft sensor and the actual draft of the ship. Detailed Implementation

[0040] To gain a more detailed understanding of the features and technical content of the embodiments of the present invention, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only and are not intended to limit the embodiments of the present invention.

[0041] In the embodiments of this invention, it should be noted that, unless otherwise stated and limited, the term "connection" should be interpreted broadly. For example, it can refer to an electrical connection, or the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above term according to the specific circumstances.

[0042] It should be noted that the terms "first," "second," and "third" used in the embodiments of this invention are merely used to distinguish similar objects and do not represent a specific ordering of objects. It is understood that "first," "second," and "third" can be interchanged in a specific order or sequence where permissible. It should be understood that the objects distinguished by "first," "second," and "third" can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein.

[0043] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] This invention provides a liquid level telemetry draft detection device, method, and ship. By analyzing the relationship between the installation location of the draft sensor and the actual draft measurement of the ship when the installation location is not on the hull plating, a liquid level telemetry draft detection method is proposed, which makes the measured values ​​of the liquid level telemetry system more accurate.

[0045] This invention provides a liquid level telemetry draft detection device, which includes: a processing unit and at least one pair of draft sensors symmetrically installed in the ship's cabin on the port and starboard sides.

[0046] Figure 1 This is a schematic diagram showing the arrangement of draft sensors on a wind power installation platform vessel, as shown below. Figure 1 As shown, in some embodiments, the installation area of ​​at least one pair of draft sensors symmetrically installed in the hull on the port and starboard sides includes the bow and / or stern of the hull. It is understood that the installation area of ​​the draft sensors may also be the midships of the hull.

[0047] like Figure 2 As shown, the draft sensor includes an inlet pipe 11, a vent pipe 12, and a pressure sensor 13. One end of the inlet pipe 11 passes through the outer plating of the side of the ship and communicates with the outside water, while the other end is connected to the pressure sensor 13. One end of the vent pipe 12 is connected to the inlet pipe 11, while the other end passes through the deck and communicates with the atmosphere. The pressure sensor 13 is communicatively connected to the processing unit. The pressure sensor 13 can detect the hydraulic pressure at the end connected to the inlet pipe 11 and send the pressure value to the processing unit.

[0048] In some embodiments, the inlet pipe 11 is equipped with a switching valve 14 for opening / closing the connection between the inlet pipe 11 and the vent pipe 12 and the pressure sensor 13.

[0049] The processing unit is capable of:

[0050] The port side draft sensor's measured height is determined based on the pressure value transmitted by the port side draft sensor's pressure sensor, and the starboard side draft sensor's measured height is determined based on the pressure value transmitted by the starboard side draft sensor's pressure sensor.

[0051] Based on the hull width, the distance between the port side pressure sensor installation location and the outer plating, the distance between the starboard side draft sensor installation location and the outer plating, the measurement height of the port side draft sensor, and the measurement height of the starboard side draft sensor, determine the actual measured draft height on the port side and the actual measured draft height on the starboard side.

[0052] The actual draft on the port side and the actual draft on the starboard side are determined based on the installation height of the pressure sensor, the actual draft measured on the port side, and the actual draft measured on the starboard side.

[0053] In some embodiments, the pressure sensor is communicatively connected to the processing unit, including:

[0054] The pressure sensor is connected to the processing unit via wired and / or wireless connection.

[0055] This invention provides a method for detecting draft by remote liquid level measurement, and a liquid level remote measurement and draft detection device based on this invention. The method includes:

[0056] Obtain the pressure values ​​transmitted by the pressure sensors of the port and starboard draft sensors.

[0057] The port side draft sensor's measured height is determined based on the pressure value transmitted by the port side draft sensor's pressure sensor, and the starboard side draft sensor's measured height is determined based on the pressure value transmitted by the starboard side draft sensor's pressure sensor.

[0058] Based on the hull width, the distance between the port side pressure sensor installation location and the outer plating, the distance between the starboard side draft sensor installation location and the outer plating, the measurement height of the port side draft sensor, and the measurement height of the starboard side draft sensor, determine the actual measured draft height on the port side and the actual measured draft height on the starboard side.

[0059] The actual draft on the port side and the actual draft on the starboard side are determined based on the installation height of the pressure sensor, the actual draft measured on the port side, and the actual draft measured on the starboard side.

[0060] In some embodiments, such as Figure 3 and Figure 4As shown, the port side draft sensor measurement height is determined based on the pressure value transmitted by the pressure sensor of the port side draft sensor, and the starboard side draft sensor measurement height is determined based on the pressure value transmitted by the pressure sensor of the starboard side draft sensor, including:

[0061] The port side draft sensor measures the height H1 = P1 / ρg, where P1 is the pressure value sent by the pressure sensor of the port side draft sensor, ρ is the density of the liquid in the external water area, and g is the acceleration due to gravity.

[0062] The starboard draft sensor measures the height H2 = P2 / ρg, where P2 is the pressure value sent by the pressure sensor of the starboard draft sensor.

[0063] In some embodiments, such as Figure 3 and Figure 4 As shown, based on the hull width, the distance between the port side pressure sensor installation location and the outer plating, the distance between the starboard side draft sensor installation location and the outer plating, the measurement height of the port side draft sensor, and the measurement height of the starboard side draft sensor, the actual measured draft height on the port side and the actual measured draft height on the starboard side are determined, including:

[0064] Actual draft measured on the starboard side

[0065] Actual draft measured on the port side

[0066] Where W is the hull width, L1 is the distance from the port side pressure sensor installation location to the outer side plating, and L2 is the distance from the starboard side draft sensor installation location to the outer side plating.

[0067] In some embodiments, such as Figure 3 and Figure 4 As shown, based on the pressure sensor installation height, the actual draft measured on the port side, and the actual draft measured on the starboard side, the actual draft on the port side and the actual draft on the starboard side are determined, including:

[0068] Actual draft on starboard side

[0069] Actual draft on port side

[0070] Where h is the installation height of the pressure sensor.

[0071] It is understood that the installation heights of the pressure sensors on the port and starboard sides can be the same or different. In the above embodiments, it is assumed that the installation heights of the pressure sensors on both sides are the same. In some embodiments, the installation heights of the pressure sensors on the port and starboard sides can be different. Correspondingly, when calculating the actual draft of the two sides, the parameters can be replaced according to the actual installation heights of the pressure sensors on both sides. This will not be elaborated further here.

[0072] This invention provides a ship that includes a remote liquid level measurement and draft detection device according to this invention.

[0073] The above embodiments of the present invention allow the liquid level telemetry draft sensor to be arranged without being restricted by the installation position of the hull plate during the production design modeling and layout process, greatly improving the flexibility of sensor arrangement.

[0074] The calculation method is simple. After measuring the relevant position information of the sensor after its deployment in the model, the calculation is performed through geometric relationships. The calculated result is then fed back to the liquid level telemetry system software engineer for software correction and output to the human-machine interface. This ensures the accuracy of the measurement data without adding any extra costs.

[0075] The effectiveness of this method has been fully verified during the mooring test through actual application on a completed wind power installation platform project. The actual draft calculated and corrected by this method is basically consistent with the draft height calculated and displayed by the system.

[0076] As is well known, different ship types have different structural requirements for their hulls. Due to the limitations of the hull structure, many ship draft level sensors cannot be effectively installed close to the hull plating. Instead, they are installed in other nearby locations as a compromise. When the ship is operating at sea and is affected by waves, the measured draft value will have a certain error compared with the actual draft value. This patent invention mainly provides a method for remotely measuring draft to reduce the measurement error caused by different installation positions of the draft measurement sensor.

[0077] The technical solutions described in the embodiments of the present invention can be combined arbitrarily without conflict.

[0078] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A liquid level telemetry and draft detection device, characterized in that, The device includes: a processing unit and at least one pair of draft sensors symmetrically installed in the hull on the port and starboard sides; The draft sensor includes an inlet pipe, a vent pipe, and a pressure sensor. One end of the inlet pipe passes through the outer side plating and communicates with the outside water, while the other end is connected to the pressure sensor. One end of the vent pipe is connected to the inlet pipe, while the other end passes through the deck and communicates with the atmosphere. The pressure sensor is communicatively connected to the processing unit and can detect the hydraulic pressure at the end connected to the inlet pipe and send the pressure value to the processing unit. The processing unit is capable of: The port side draft sensor's measured height is determined based on the pressure value transmitted by the port side draft sensor's pressure sensor, and the starboard side draft sensor's measured height is determined based on the pressure value transmitted by the starboard side draft sensor's pressure sensor, including: The port side draft sensor measures the height H1 = P1 / ρg, where P1 is the pressure value sent by the pressure sensor of the port side draft sensor, ρ is the density of the liquid in the external water area, and g is the acceleration due to gravity. The starboard draft sensor measures the height H2 = P2 / ρg, where P2 is the pressure value sent by the pressure sensor of the starboard draft sensor. Based on the hull width, the distance between the port side pressure sensor installation location and the outer plating, the distance between the starboard side draft sensor installation location and the outer plating, the measurement height of the port side draft sensor, and the measurement height of the starboard side draft sensor, the actual measured draft height on the port side and the actual measured draft height on the starboard side are determined, including: The actual draft measured on the starboard side The actual draft measured on the port side ; Where W is the width of the hull. The distance between the port side pressure sensor installation location and the outer side plating. The distance between the installation location of the starboard draft sensor and the outer side plating; The actual drafts on the port and starboard sides are determined based on the installation height of the pressure sensor, the actual draft measured on the port side, and the actual draft measured on the starboard side.

2. The liquid level telemetry and draft detection device according to claim 1, characterized in that, The pressure sensor is communicatively connected to the processing unit, including: The pressure sensor is connected to the processing unit via wired and / or wireless connection.

3. The liquid level telemetry and draft detection device according to claim 1, characterized in that, The inlet pipe is equipped with a switch valve for opening / closing the connection between the inlet pipe and the vent pipe and the pressure sensor.

4. The liquid level telemetry and draft detection device according to claim 1, characterized in that, The installation areas of the at least one pair of draft sensors symmetrically installed on the port and starboard sides within the hull include the bow, stern, and / or midships of the hull.

5. A method for detecting draft by remote liquid level measurement, based on the liquid level remote measurement and draft detection device according to any one of claims 1 to 4, characterized in that, The method includes: Obtain the pressure values ​​transmitted by the pressure sensors of the port and starboard draft sensors. The port side draft sensor measurement height is determined based on the pressure value sent by the pressure sensor of the port side draft sensor, and the starboard side draft sensor measurement height is determined based on the pressure value sent by the pressure sensor of the starboard side draft sensor. Based on the hull width, the distance between the port side pressure sensor installation position and the outer side plating, the distance between the starboard side draft sensor installation position and the outer side plating, the measurement height of the port side draft sensor and the measurement height of the starboard side draft sensor, the actual measured draft height on the port side and the actual measured draft height on the starboard side are determined. The actual drafts on the port and starboard sides are determined based on the installation height of the pressure sensor, the actual draft measured on the port side, and the actual draft measured on the starboard side.

6. The method for remote liquid level measurement and draft detection according to claim 5, characterized in that, The process of determining the actual draft on the port side and the actual draft on the starboard side based on the installation height of the pressure sensor, the actual draft measured on the port side, and the actual draft measured on the starboard side includes: Actual draft on starboard side ; Actual draft on port side ; Where h is the installation height of the pressure sensor.

7. A ship, characterized in that, The vessel includes: a liquid level telemetry draft detection device as described in any one of claims 1 to 4.

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