A super large offshore booster station high-precision weighing device and a weighing method

Abstract

The application provides a kind of super large offshore booster station high-precision weighing device and weighing method, belongs to super large offshore booster station weighing technical field.Solve the problem of low precision of super large offshore booster station alone using module vehicle weighing and alone using weighing sensor ground bearing capacity.The technical scheme is: a kind of super large offshore booster station high-precision weighing device, including first weighing module and second weighing module, first weighing module includes one-to-one corresponding sea shipping buttress with general column of booster station, and the weighing sensor group arranged on sea shipping buttress;Second weighing module is used to lift booster station, transport booster station to cooperate with first weighing module, and unload booster station locally to the weighing sensor group of first weighing module and repeat several times.The beneficial effects of the application are: the super large offshore booster station high-precision weighing device provided by the application has simple structure, safe and convenient operation, high weighing precision and low requirement for ground bearing capacity.

Description

Technical Field

[0001] This invention relates to the field of weighing technology for ultra-large offshore substations, and in particular to a variable cross-section beam segment matching component and a method for its precise installation. Background Technology

[0002] As the power collection center of an offshore wind farm, the offshore booster station is a key facility for power transmission and transformation, and is crucial to the success or failure of the entire offshore wind farm. Ultra-large booster stations require strict weight control during roll-on / roll-off loading and offshore hoisting.

[0003] If modular vehicles are used for weighing alone, their weighing accuracy is only ±5%, which cannot meet the project's weighing requirements. If load cells are used alone, their weighing accuracy is ±5‰. Although this meets the accuracy requirements, it does not meet the requirements for the bearing capacity of the foundation per unit area. Furthermore, the load cells do not have a synchronous adjustment function, which may result in a small number of load cells not being under stress while the rest are overloaded, posing a significant risk.

[0004] How to solve the above-mentioned technical problems is the challenge facing this invention. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision weighing device for ultra-large offshore substations that is simple in structure, safe and convenient to operate, has high weighing accuracy, low requirements for foundation bearing capacity, and provides a high-precision weighing method for ultra-large offshore substations that is simple in procedure, has high weighing accuracy, and is safe to weigh.

[0006] To achieve the aforementioned objectives, the present invention employs the following technical solution: a high-precision weighing device for an ultra-large offshore substation, comprising:

[0007] The first weighing module includes several marine support piers that correspond one-to-one with several general columns of the booster station, and a weighing sensor group arranged on the top surface of each of the marine support piers.

[0008] And a second weighing module, used to lift the booster station, transport the booster station to cooperate with the first weighing module, and partially unload the booster station onto the weighing sensor group of the first weighing module and repeat this process several times.

[0009] By combining a second weighing module with low weighing accuracy with a first weighing module with high weighing accuracy, and using the second weighing module to unload part of the weight to the weighing sensor group for high-precision measurement, the total weight value of the booster station can be obtained by combining proportional conversion and center of gravity. This avoids the weighing error caused by the second weighing module with low weighing accuracy directly weighing, and avoids the high bearing capacity requirements on the foundation when the first weighing module with high weighing accuracy weighs.

[0010] Furthermore, the weighing sensor group includes several weighing sensors evenly arranged along the circumference of the marine support pier and located directly below the general column corresponding to the booster station. The arrangement is reasonable, avoiding uneven force distribution, further reducing weighing errors and lowering the risk factor during weighing.

[0011] Furthermore, a pad is installed under the marine support pier to distribute the load during weighing.

[0012] Furthermore, the pad is made of steel plate, which is convenient to source and manufacture, and has a low cost.

[0013] Furthermore, the weight unloaded from the second weighing module to the first weighing module ranges from 5% to 40%.

[0014] Furthermore, the number of the marine support piers is set to four, and the center line is distributed in a rectangular shape to meet the weighing requirements of the four general columns of the existing booster station.

[0015] Furthermore, the second weighing module is configured as a hydraulic module vehicle.

[0016] To better achieve the above-mentioned objectives, this invention also provides a high-precision weighing method for ultra-large offshore substations, comprising the following steps:

[0017] Step S1: Arrange several marine support piers according to the size of the booster station's general column, and arrange a weighing sensor group on the top surface of each marine support pier.

[0018] Step S2: Use the second weighing module to lift the booster station and transfer it to the weighing position of the first weighing module;

[0019] Step S3: Unload a portion of the weight of the booster station onto the weighing sensor group, and repeat this process several times;

[0020] Specifically, the second weighing module is a hydraulic modular vehicle. Taking the weighing of a booster station with a design weight of 6261 tons as an example, a 288-axle + 8-PPU hydraulic modular vehicle is deployed. The SPMT hydraulic modules are divided into 4 groups. See the appendix for hydraulic grouping. Figure 3Because the hydraulic module pressure accuracy is ±5%, while the load cell accuracy is ±5‰, a weight comparison analysis will be performed to ensure the accuracy of the combined weighing. Preferably, the process is repeated four times, unloading 10%, 15%, 20%, and 30% of the weight onto the load cell group in sequence. Before weighing, the load cells are zeroed, and it must be ensured that there are no contact points between the load cells and the booster station and / or the second weighing module to ensure that there is no load on the load cells. During the unloading process, if the position of each load cell does not change significantly and the contact is tight, it means that the load cells have been fully stressed. At this point, they should remain stationary for 1-5 minutes to measure the final data.

[0021] Furthermore, during weighing, if the relative variation width is less than 1%, the weight is recorded as the average weight and the recorded center of gravity using the average load recorded at each support during the three measurement processes. If the relative variation width exceeds 1%, two more measurements should be performed, and the highest and lowest readings should be discarded. If the relative variation width calculated from the obtained value still exceeds 1%, the process should be repeated when inspecting the equipment after use, and extra care should be taken when performing the operation.

[0022] Step S4: Calculate and obtain several total weight values ​​of the booster station based on the layout of the weighing sensor group, the layout of the hydraulic module vehicle, and the unloading weight.

[0023] Step S5: Calculate the average of several total weight values ​​of the booster station from step S4.

[0024] Specifically, by using the weighing sensor group to reduce the load of the hydraulic module vehicle by a corresponding weight, the weighing value of the weighing sensor group when the load of the hydraulic module vehicle is reduced by 100% can be derived. The total weight value of the booster station under this unloading amount can then be derived. The total weight value of the booster station under each unloading amount can be derived one by one. The total weight values ​​of the booster station derived when the second weighing module is unloaded by 10%, 15%, 20%, and 30% are recorded as G10, G15, G20, and G25, respectively. The average value of G10, G15, G20, and G25 is then calculated.

[0025] Furthermore, before step S4, the following steps are added: repeating steps S2-S3 several times to repeatedly align the weighing sensor group with the general column, thereby further reducing the weighing error.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. This invention uses a combination of a first weighing module and a second weighing module for weighing, which can effectively solve the problems of low weighing accuracy when using a single module vehicle and the bearing capacity of the foundation when using a single weighing sensor. It has a simple structure and is easy to operate.

[0028] 2. The high-precision weighing method for ultra-large offshore booster stations provided by this invention has simple steps, high weighing accuracy, and weighing safety, and is suitable for widespread application. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0030] Figure 1 This is a top view of the first weighing module in this invention;

[0031] Figure 2 This is a schematic diagram showing the position of the weighing sensor in this invention;

[0032] Figure 3 This is a schematic diagram of the transfer and booster station for the second weighing module in this invention;

[0033] Figure 4 This is a schematic diagram showing the grouping of hydraulic modular vehicles.

[0034] The attached figures are labeled as follows: 1. First weighing module; 11. Marine support pier; 12. Pad; 13. Weighing sensor; 2. Pressure boosting platform; 21. General column; 3. Second weighing module. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] Example 1

[0037] A high-precision weighing device for an ultra-large offshore substation includes:

[0038] The first weighing module 1 includes four shipping piers 11 corresponding to the four general columns 21 of the booster station 2. The center line connecting the four shipping piers 11 is arranged in a rectangle. A weighing sensor group is arranged on the top surface of each shipping pier 11. A pad 12 is set under the shipping pier 11. Preferably, the pad 12 is a 30mm thick steel plate. The shipping pier 11 is loaded separately during weighing. The weighing sensor group includes several weighing sensors 13 that are evenly arranged around the shipping pier 1 and located directly below the general column 21 corresponding to the booster station 2. The arrangement is reasonable and further reduces the weighing error.

[0039] And the second weighing module, in this embodiment, a hydraulic module vehicle is selected, which is used to lift the booster station 2, transport the booster station 2 to cooperate with the first weighing module 1, and partially unload the booster station 2 onto the weighing sensor group of the first weighing module 1 and repeat this process several times.

[0040] The weights unloaded from the second weighing module to the first weighing module 1 are 10%, 15%, 20%, and 30%, respectively.

[0041] Example 2

[0042] A high-precision weighing method for ultra-large offshore substations includes the following steps:

[0043] Step S1: Arrange the four marine support piers 11 according to the dimensions of the general column 21 of the booster station 2. Place six weighing sensors on the top surface of each marine support pier 11. The six weighing sensors 13 are evenly distributed around the marine support pier 1. Lay a pad 12 at the bottom of each marine support pier 11. Select a 30mm thick steel plate to distribute the load on the marine support pier 11. After the arrangement, level the top surface of the marine support pier 11.

[0044] Step S2: Use a hydraulic modular vehicle to lift the booster station 2 and transport it to the weighing position of the first weighing module, so that the 6 weighing sensors on each marine support pier 11 are located directly below the general column 21 corresponding to the booster station 2.

[0045] Step S3: Unload a portion of the weight of the booster station to the weighing sensor group, and repeat 4 times, unloading 10%, 15%, 20%, and 30% of the weight to the weighing sensor group in sequence.

[0046] Taking the weighing of a booster station with a design weight of 6261 tons as an example, a 288-axle + 8-PPU hydraulic module vehicle is deployed, and the SPMT hydraulic modules are divided into 4 groups. See the appendix for hydraulic grouping details. Figure 4 Since the hydraulic module pressure value accuracy is poor at ±5%, while the weighing sensor accuracy is ±5‰, a weight comparison analysis will be conducted to ensure the accuracy of the combined weighing.

[0047] Before weighing, the load cells are zeroed out. Before zeroing, it must be ensured that there are no contact points between the load cells and the booster station and / or the second weighing module to ensure that there is no load on the load cells. During the weighing process, the maximum wind speed shall not exceed 8 m / s. During the unloading process, if the position of each load cell does not change significantly and the contact is tight, it means that the load cells have been fully stressed. At this time, they should be kept still for 1-5 minutes to measure the final data.

[0048] Furthermore, during weighing, if the relative variation width is less than 1%, the weight is recorded as the average weight and the recorded center of gravity using the average load recorded at each support during the three measurement processes. If the relative variation width exceeds 1%, two more measurements should be performed, and the highest and lowest readings should be discarded. If the relative variation width calculated from the obtained value still exceeds 1%, the process should be repeated when inspecting the equipment after use, and extra care should be taken when performing the operation.

[0049] Step S4: Calculate and obtain several total weight values ​​of the booster station based on the layout of the weighing sensor group, the layout of the hydraulic module vehicle, and the unloading weight.

[0050] Step S5: Calculate the average of several total weight values ​​of the booster station from step S4.

[0051] Specifically, by using the weighing sensor group to reduce the load of the hydraulic module vehicle by a corresponding weight, the weighing value of the weighing sensor group when the load of the hydraulic module vehicle is reduced by 100% can be derived. The total weight value of the booster station under this unloading amount can then be derived. The total weight value of the booster station under each unloading amount can be derived one by one. The total weight values ​​of the booster station derived when the second weighing module is unloaded by 10%, 15%, 20%, and 30% are recorded as G10, G15, G20, and G25, respectively. The average value of G10, G15, G20, and G25 is then calculated.

[0052] Example 3

[0053] Based on Example 2, the following steps are added before step S4: repeat steps S2-S3 several times to repeatedly align the weighing sensor group with the general column 21 to further reduce the weighing error.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision weighing device for an ultra-large offshore substation, characterized in that, include: The first weighing module (1) includes several shipping support piers (11) corresponding one-to-one with several general columns (21) of the booster station (2), and a weighing sensor group arranged on the top surface of each of the shipping support piers (11). And a second weighing module, used to lift the booster station (2), transport the booster station (2) to cooperate with the first weighing module (1), and partially unload the booster station (2) onto the weighing sensor group of the first weighing module (1) and repeat this several times.

2. The high-precision weighing device for ultra-large offshore substations according to claim 1, characterized in that, The weighing sensor group includes several weighing sensors (13) evenly arranged around the circumference of the sea support (11) and located directly below the general column (21) corresponding to the booster station (2).

3. The high-precision weighing device for ultra-large offshore substations according to claim 1 or 2, characterized in that, A pad (12) is installed below the marine support pier (11).

4. The high-precision weighing device for ultra-large offshore booster stations according to claim 3, characterized in that, The pad (12) is made of steel plate.

5. The high-precision weighing device for ultra-large offshore substations according to claim 1, characterized in that, The weight range of the second weighing module unloaded onto the first weighing module (1) is 5%-40%.

6. The high-precision weighing device for ultra-large offshore substations according to claim 2, characterized in that, The number of the marine support piers (11) is set to four, and the center line is arranged in a rectangular distribution.

7. The high-precision weighing device for ultra-large offshore substations according to claim 5, characterized in that, The second weighing module is configured as a hydraulic module vehicle.

8. A high-precision weighing method for an ultra-large offshore substation, characterized in that, Includes the following steps: Step S1: Arrange several marine support piers (11) according to the size of the general column (21) of the booster station (2), and arrange a weighing sensor group on the top surface of each marine support pier (11). Step S2: Use the second weighing module to lift the booster station (2) and transfer it to the weighing position of the first weighing module; Step S3: Unload a portion of the weight of the booster station (2) to the weighing sensor group, and repeat this process several times; Step S4: Calculate and obtain several total weight values ​​of the booster station (2) based on the layout of the weighing sensor group, the layout of the hydraulic module vehicle, and the unloading weight; Step S5: Calculate the average of several total weight values ​​of the booster station (2) in step S4.

9. The high-precision weighing method for ultra-large offshore booster stations according to claim 8, characterized in that, Before step S4, add the following steps: repeat steps S2-S3 several times.

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