Ballast water tank space distance measuring device
By designing a ballast tank air distance measurement device including a main cross bar and a distance measuring mechanism, the problem of inaccurate measurement air distance value in low-light environments is solved, and higher measurement accuracy and flexibility are achieved.
Patent Information
- Application Number
- CN202421278272.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-06-05
AI Technical Summary
In the inclination experiment and load capacity test of experimental ships, it is difficult for the prior art to accurately measure the air distance value of the ballast water tank in low light environments, resulting in inaccurate measurements.
A ballast water tank air distance measurement device is designed, including a main body cross rod that can be mounted horizontally on the manhole. A distance measuring mechanism is installed on the top of the main body cross rod to measure the distance between the water surface and the manhole. Support springs, mounting holes and horizontal bubbles are provided at both ends of the main crossbar. The main crossbar is fixed above the manhole through long screws and nuts, and a light source is provided through a charging light to ensure that the measurement environment is bright.
The device can accurately measure the air distance value of the ballast water tank in low light environments, improving the accuracy and flexibility of measurement, and is suitable for inclination experiments and load capacity testing of a variety of ship types and experimental ships.
Smart Images
Figure CN222979792U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ranging, in particular to a ullage measuring device for a ballast water tank. Background Art
[0002] Series of ships include bulk carriers (BC ships), container ships (CONTANINER), pure car and truck carriers (PCTC ships), floating production storage and offloading units (FPSO ships), etc., hereinafter collectively referred to as experimental ships. Manhole: A flange hole at the top of the ballast water tank that can accommodate a person to pass through. Before the experimental ship is completed and delivered, an inclining experiment and a deadweight test need to be carried out on the experimental ship, so as to obtain the light ship weight and the position of the center of gravity of the experimental ship through calculation.
[0003] The existing inclining experiment method is realized by replacing the ballast water in the symmetric ballast water tanks on the left and right sides. During the experiment, in order to accurately monitor the replacement amount of the ballast water in the ballast water tank, it is necessary to measure the ullage value of the ballast water tank. The so-called ullage value refers to the shortage of the ballast water in the ballast water tank, that is, the distance from above the water surface to the space below the top of the ballast water tank during the process of pumping in and out the ballast water in the ballast water tank.
[0004] During actual measurement, at the manhole position on the deck where the top of the ballast water tank is located, the distance from the manhole position to the liquid level is obtained, and this distance value is the ullage value. However, in order not to delay the normal construction time of the experimental ship, the experiment time is usually selected at night, and all structures and equipment need to be closed and fixed, resulting in a dark environment around the manhole, making it very difficult to use a handheld laser depth sounder, and the problem of inaccurate reading is very prominent. Content of the Utility Model
[0005] In view of this, the problem to be solved by the utility model is to provide a ullage measuring device for a ballast water tank.
[0006] To solve the above technical problems, the technical solution adopted by the utility model is:
[0007] A ullage measuring device for a ballast water tank includes a main crossbar that can be horizontally mounted on the manhole, and a ranging mechanism is arranged on the top surface of the main crossbar for measuring the distance between the water surface and the manhole;
[0008] Installation holes are provided at both ends of the main crossbar, and both ends of the main crossbar are fixed above the manhole wall through screws and nuts.
[0009] Further, support springs are arranged on the bottom surfaces of both ends of the main crossbar, the screws are long screws, and the horizontal level of the main crossbar is adjusted by adjusting the screwing length of the nuts.
[0010] Further, the diameter of the support spring is not less than two-thirds of the width of the main crossbar and not greater than the width of the main crossbar.
[0011] Further, the mounting holes are elongated holes along the length direction of the main cross bar.
[0012] Further, spirit levels are installed at both ends of the main cross bar to determine whether the main cross bar is horizontal.
[0013] Further, the distance measuring mechanism includes a chute, a laser depth sounder is slidably installed in the chute, and a slider matching with the chute is installed on the bottom surface of the laser depth sounder;
[0014] A light-transmitting hole parallel to the chute is formed on the top surface of the main cross bar to allow the laser generated by the laser depth sounder to pass through.
[0015] Further, the slider is a self-locking roller.
[0016] Further, the main cross bar is connected to the substrate through a spool to suspend the substrate below the main cross bar;
[0017] The spool is installed on the top surface of the cross beam, a turning handle for rotating the spool is fixedly installed on the end surface of the spool, a connecting wire is wound on the surface of the spool, and the extending end of the connecting wire is connected to the substrate.
[0018] Further, grids arranged in a matrix are drawn on the surface of the substrate, and characters are marked in each grid.
[0019] Further, a magnetic charging illuminating lamp is installed on the bottom surface of the main cross bar, and the charging illuminating lamp faces the substrate.
[0020] The advantages and positive effects of the present utility model are:
[0021] By installing a distance measuring mechanism on the top surface of the main cross bar, support springs, mounting holes and spirit levels are arranged at both ends of the main cross bar, and the main cross bar is fixed above the manhole by using long screws and nuts. According to the spirit level, the screwing length of the nut is adjusted to make the main cross bar in a horizontal position, avoiding the situation that the two sides of the manhole are not on the same water surface due to the camber of the ship deck. It can be applied to various ship types and can be repeatedly used in the inclination test and load capacity test of multiple types of experimental ships, improving the measurement accuracy and flexibility.
[0022] By setting the charging illuminating lamp, the problem of inaccurate reading of the laser depth sounder due to unclear ambient light is avoided. Description of the Drawings
[0023] The drawings are used to provide further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:
[0024] Figure 1This is the overall structure diagram of a sounding measurement device for a ballast water tank of the present utility model.
[0025] In the figure: 1. Laser depth sounder; 2. Roller; 3. Spool; 4. Nut; 5. Spirit level; 6. Support spring; 7. Main body cross bar; 8. Charging lighting lamp; 9. Fishing line; 10. Substrate. Specific implementation mode
[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying 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 creative efforts shall fall within the protection scope of the present utility model.
[0027] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "arranged on" another component, it can be directly arranged on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used herein in the description of the present utility model are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0029] As Figure 1 shown, the present utility model provides a sounding measurement device for a ballast water tank, including a main body cross bar 7 with a cuboid structure. The length of the main body cross bar 7 is not less than the diameter of the manhole and can span the manhole on the top surface of the ballast water tank. A ranging mechanism is installed on the top surface of the main body cross bar 7, and the ranging mechanism is used to measure the distance from the liquid level in the ballast water tank to the manhole.
[0030] The ranging mechanism includes a chute and a laser depth sounder 1. A slider is fixedly installed on the bottom surface of the laser depth sounder 1, and the slider is slidably installed in the chute. The chute is installed along the length direction of the main body cross bar 7, and anti-sliding blocks for preventing the laser depth sounder 1 from sliding out of the track are installed at both ends of the chute.
[0031] An embodiment of the present application is as follows: The laser depth sounder 1 is installed on a positioning trolley with four rollers 2, and the four rollers 2 are slidably clamped in the chute. There is an anti-slip switch on the roller 2 of the positioning trolley, which is convenient for fixing the position of the laser depth sounder 1, and the laser depth sounder 1 can be fixed at any position in the chute. There is a circular light hole in the middle of the positioning trolley through which the laser can pass, and at the same time, a light-transmitting hole through which the laser passes and is parallel to the chute is also opened at the middle position of the main body steel plate.
[0032] The manhole is of a flange hole and flange cover structure. To facilitate the fixing of the main body cross bar 7, mounting holes are opened at both ends of the main body cross bar 7 and fixed by screws and nuts 4. Since the diameters of the manholes in different experimental ships are different, in order to improve the applicability of the ranging device, the mounting holes are of an elongated hole structure and are arranged along the length direction of the main body cross bar 7.
[0033] In some experimental ships, such as bulk carriers, the ballast water tanks for replacing ballast water are on the main deck. In some other experimental ships, such as car carriers, the ballast water tanks for replacing ballast water are on the sixth deck, and the sixth deck is not on the main deck. Generally, the ship deck has a camber, which causes the two sides of the manhole not necessarily to be on the same horizontal plane, resulting in the main body cross bar 7 not being in a horizontal position and affecting the measurement accuracy.
[0034] Support springs 6 are arranged on the bottom surfaces of both ends of the main body cross bar 7. The screws for fixing the main body cross bar 7 are long screws, and the support springs 6 can independently support the main body cross bar 7. By adjusting the screwing length of the nut 4, the heights of both ends of the main body cross bar 7 are adjusted to horizontally fix the main body cross bar 7. A spirit level 5 is arranged on the main body cross bar 7, and it is judged whether the main body cross bar 7 is horizontal based on the spirit level 5. An embodiment of the present application is that spirit levels 5 are arranged at both ends of the main body cross bar 7, which is convenient for judging whether both ends of the main body cross bar 7 are horizontal.
[0035] The diameter of the support spring 6 is not less than two-thirds of the width of the main body cross bar 7 and not greater than the width of the main body cross bar 7. So as to smoothly adjust the heights of both ends of the main body cross bar 7. An embodiment of the present application is that support springs 6 are arranged at both ends of the mounting hole.
[0036] When the measurement device is actually used many times, it is found that the measurement is inaccurate when the laser of the depth sounder hits the water surface. To improve the ranging accuracy, a reference plate is suspended on the main body steel plate by two fishing lines 9. The reference plate has buoyancy and can float on the water surface. The main body cross bar 7 is connected to the substrate 10 through a spool 3 to suspend the substrate 10 below the main body cross bar 7. The fishing line 9 is wound around the side of the spool 3, and the extending end of the fishing line 9 is connected to the substrate 10. A turning handle is fixedly installed on the end face of the spool 3, and the substrate 10 is lowered or retracted by rotating the rotating shaft.
[0037] One embodiment of the present application is as follows: Spools 3 are installed on both the left and right sides of the ranging device. The fishing lines 9 extending from the two spools 3 are respectively connected to both ends of the substrate 10, so that the substrate 10 is located directly below the ranging device. A grid arranged in a matrix is drawn on the surface of the substrate 10, and each grid is marked with characters. By adjusting the lengths of the fishing lines 9 on the two spools 3, the substrate 10 floats horizontally on the water surface, and at the same time, the accurate position where the laser of the ranging device irradiates on the reference plate is adjusted.
[0038] A magnetic charging lighting lamp 8 is installed on the bottom surface of the main body cross bar 7. The charging lighting lamp 8 faces the substrate 10, which is convenient for seeing the floating angle, position of the substrate 10 and the laser irradiation position.
[0039] The working principle of the present utility model:
[0040] Turn on the magnetic charging lighting device. After adjusting the main body cross bar 7 to be horizontal through the spring, spirit level 5 and nut 4, adjust the extending length of the fishing line 9 to make the reference plate float naturally below the device. Fix and turn on the laser depth finder 1 to make the laser hit the reference plate. Read the readings on the depth finder multiple times. After data screening and processing, an accurate air gap value is obtained.
[0041] The working process of the present utility model is as follows:
[0042] Clean the weight on the experimental ship, count the weight and position of the immovable items, and fix the movable equipment, cables, anchor chains, etc. Select a time when the environmental parameters meet the experimental requirements, loosen the anchor cable of the experimental ship, and let it float freely in the testable sheltered area.
[0043] Open the hatch cover (flange cover of the manhole) of the intermediate ballast water tank for the experiment, install the measuring device using long screws, turn on the charging lighting lamp 8, fix and adjust the device horizontally through the spring and nut 4, check the levelness of the device through the spirit level 5, and record the height between the lower end of the main body cross bar 7 and the deck, the height between the light source of the laser depth finder 1 and the main body cross bar 7, and the thickness of the main body cross bar 7.
[0044] Move the position of the laser depth finder 1. When approaching the middle position, fix the position of the laser depth finder 1 on the track through the switch on the roller 2. Contact the ballast water control room to pump ballast water. When estimating at about the experimental water level, put the reference plate tied with the fishing line 9 into the ballast water tank through the gap between the ballast water tank air gap measuring device and the manhole, so that the reference plate floats on the ballast water surface in the tank. Adjust the length of the fishing line 9 through the spool 3 to make the substrate 10 located directly below the laser depth finder 1. Turn on the laser depth finder 1 to make the laser hit the middle position of the reference plate, record the current position, and take a test reading. A heavy hammer sounding ruler can be used to assist in verifying the reliability of the reading.
[0045] The above has described the embodiments of the present utility model in detail, but the above content is only the preferred embodiments of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made within the scope of the present utility model shall still fall within the scope covered by this patent.
Claims
1. A ballast water tank empty distance measuring device, characterized in that: It comprises a main body cross bar (7) which can be horizontally mounted on the manhole, and a distance measuring mechanism is arranged on the top surface of the main body cross bar (7) for measuring the distance between the water surface and the manhole; Both ends of the main cross bar (7) are provided with mounting holes, and the two ends of the main cross bar (7) are fixed to the top of the manhole wall by screws and nuts (4).
2. A ballast water tank empty distance measuring device according to claim 1, characterized in that: Support springs (6) are provided on the bottom surfaces of both ends of the main cross bar (7); the screw is a long screw, and the horizontality of the main cross bar (7) is adjusted by adjusting the screwing length of the nut (4).
3. A ballast water tank empty distance measuring device according to claim 2, characterized in that: The diameter of the support spring (6) is not less than two-thirds of the width of the main body cross bar (7) and not greater than the width of the main body cross bar (7).
4. A ballast water tank empty distance measuring device according to claim 1, characterized in that: The mounting hole is a long hole along the length direction of the main body cross bar (7).
5. The ballast water tank empty distance measuring device according to claim 1, characterized in that: A level bubble (5) is installed on the main body cross bar (7) to judge whether the main body cross bar (7) is horizontal.
6. A ballast water tank empty distance measuring device according to claim 1, characterized in that: The distance measuring mechanism comprises a slide groove, in which a laser depth sounder (1) is slidably mounted, and a slider matching the slide groove is mounted on the bottom surface of the laser depth sounder (1); The top surface of the main body cross bar (7) begins with a light-transmitting hole parallel to the slide groove to facilitate the passage of laser light.
7. A ballast water tank empty distance measuring device according to claim 6, characterized in that: The slide block is a self-locking roller (2).
8. The ballast water tank empty distance measuring device according to claim 1, characterized in that: The main body cross bar (7) is connected to the base plate (10) via a bobbin (3) so as to suspend the base plate (10) below the main body cross bar (7); The bobbin (3) is installed on the top surface of the beam, a rotating handle for rotating the bobbin (3) is fixedly installed on the end surface of the bobbin (3), a connecting wire is wound around the surface of the bobbin (3), and the extended end of the connecting wire is connected to the base plate (10).
9. A ballast water tank empty distance measuring device according to claim 8, characterized in that: The surface of the substrate (10) is painted with grids arranged in a matrix, and each of the grids is marked with a character.
10. The ballast water tank empty distance measuring device according to claim 1, characterized in that: A magnetic charging lighting lamp (8) is installed on the bottom surface of the main body cross bar (7), and the charging lighting lamp (8) is opposite to the base plate (10).