A high-resolution foldable device for scanning the flow velocity profile of a pool with variable water depth

Abstract

The present invention relates to a high-resolution foldable water depth scanning device for measuring the flow velocity profile of a pool, which comprises a plurality of instrument mounting rods that can be folded in sequence, and each pair of instrument mounting rods is connected by a hinge; a current meter is fixed on each instrument mounting rod by two upper and lower clamps through screws, and dimension scale lines for adjusting the mounting position of the current meter are engraved on each instrument mounting rod; the first instrument mounting rod at the bottom is of a telescopic nested tube structure, the outer tube and the inner tube cannot fall off from each other, and the outer tube slides along the inner tube. A base is welded to the lower end of the inner tube, and a laser is fixed on the base for determining the installation orientation of the device; the base is fixed to the bottom of the pool. After the whole device is arranged in the pool, by moving the top instrument mounting rod up and down to drive the outer tube of the first instrument mounting rod at the bottom to slide, high-resolution adjustment of the water depth measured by the current meter can be achieved.

Description

Technical Field

[0001] The present invention relates to a high-resolution foldable water pool flow velocity profile scanning device for water depth, belonging to the technical field of ocean engineering water pool tests. Background Art

[0002] An ocean engineering water pool can simulate different ocean current environments. Accurately measuring the flow velocities at different depths and giving a detailed flow velocity-depth distribution map is the basis for accurately simulating the flow velocity profiles under different sea conditions. Currently, the main device used for flow velocity profile testing is an acoustic Doppler current profiler (ADCP). However, the ADCP is developed for the actual ocean environment, generally having a large measurement range and low depth resolution. More regrettably, due to the clean water body and few suspended substances in the ocean engineering water pool, under the condition of insufficient reflection sources, there are many bad points, large burrs, and low accuracy for the ADCP, and it cannot even be used.

[0003] Using other point-type flow velocity meters can only obtain the flow velocity at one depth in the water pool at a time. To solve the problem of flow velocity profile measurement, multiple point-type flow velocity meters can be used, but it is also necessary to solve the problems of conveniently and quickly placing multiple flow velocity meters at the specified water depth positions, adjusting the water depth high-resolution of the flow velocity meters, and judging the installation orientation of the flow velocity meters at deep water.

[0004] Currently, there is no specific solution to this test problem in the existing patents. In the paper "CURRENT MODELING EXPERIENCE IN AN OFFSHORE BASIN" published by a foreign related institution, a method of lowering a cart carrying an acoustic point-type flow velocity meter to different depths in the water pool through two tension legs is mentioned. This method only uses one flow velocity meter, with low test efficiency, and at the same time, the structure is relatively complex and heavy, it is not easy to control the direction during the structure installation process, and it is not convenient for the measurement cart to move as it needs to rely on a power device. Therefore, there is an urgent need to study a flow velocity profile measurement device that is convenient to arrange and has a high water depth resolution. Summary of the Invention

[0005] In view of the problems existing in the above-mentioned background art, the present invention proposes a high-resolution foldable water pool flow velocity profile scanning device for water depth, which can measure the flow velocities at different water depths simultaneously, and has the characteristics of high water depth resolution, convenient adjustment, stable structure, and high velocity measurement accuracy.

[0006] The present invention adopts the following technical solutions:

[0007] A device for scanning the flow velocity profile of a collapsible pool with high water depth resolution, comprising a plurality of instrument mounting rods that can be sequentially folded, and each pair of instrument mounting rods is connected by a hinge; a male plug is fixedly provided at one end of each instrument mounting rod for connecting with the female plug of an adjacent instrument mounting rod; a female plug is provided at the other end of each instrument mounting rod for connecting with the male plug of an adjacent instrument mounting rod; the male plug and the female plug cooperate with each other to facilitate opening, closing and fixing; the bottom first instrument mounting rod is of a telescopic nested tube structure, and the outer tube and the inner tube cannot fall off, and the outer tube slides along the inner tube. A base is welded to the lower end of the inner tube, and a laser is fixed on the base; the flow velocity meter is fixed on each instrument mounting rod by two upper and lower clamps with screws, and dimension scale lines for adjusting the installation position of the flow velocity meter are engraved on each instrument mounting rod; another dimension scale line is engraved on the top rod of the instrument mounting rod. When the device is installed in place, the high-precision adjustment of the water depth position of the flow velocity meter is achieved by moving the top rod up and down and observing the other scale line, so as to achieve the purpose of high water depth resolution for flow velocity measurement.

[0008] Preferably, the instrument mounting rod is of a square tube structure, and a set ballast is placed inside to adjust the weight to cope with different depths and water flow velocities.

[0009] Preferably, a pair of hinges are fixed on the side surfaces at both ends of the instrument mounting rod by screws in a facing manner.

[0010] Preferably, the male plug and the female plug are fixed on the instrument mounting rod by screws.

[0011] Preferably, male plugs / female plugs are fixed on both the front and back sides of all instrument mounting rods, so as to ensure the rigidity of the overall bracket in the unfolded state.

[0012] Preferably, a ballast is placed on the upper part of the base to fix it to the bottom of the water.

[0013] Preferably, the laser is installed in the same direction as the flow velocity meter to facilitate determining the direction of the flow velocity meter in deep water.

[0014] Preferably, the flow velocity meter is fixed on the instrument mounting rod by two upper and lower clamps. The clamps are connected by screws, and the tightness of the clamps can be adjusted so as to slide up and down on the instrument mounting rod.

[0015] Preferably, the instrument mounting rod can be freely installed and disassembled to cope with the measurement of different water levels.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1) In the experiment of measuring water flow velocity, instead of measuring the velocity at only one water depth each time, one or more current meters are fixed on each instrument installation rod, which can simultaneously measure the velocities at different water depths at the same position, improving the accuracy and timeliness of the data results and saving time and effort.

[0018] 2) The device can be straightened and folded, with strong adaptability, convenient for transportation and use. The operation is simple, and the instrument installation rod can be disassembled, and it can be used and accurately measured under different water depth conditions.

[0019] 3) The current meter can slide up and down through a clamp that can be tightened and loosened, and is arranged to meet the measurement requirements of different water depths. The scale line on the instrument installation rod can make the water depth result more accurate.

[0020] 4) After the device is installed in place, the high-precision adjustment of the water depth positions of multiple current meters underwater can be easily achieved by moving the top rod up and down above the water surface and observing the scale line, creating convenient conditions for the high-precision scanning of the velocity profile. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front schematic view of the present invention in the folded state.

[0022] Figure 2 It is a back schematic view of the present invention in the folded state.

[0023] Figure 3 It is a schematic view of the installation of the hinge pin of the present invention.

[0024] Figure 4 It is a schematic view of the installation of the current meter of the present invention.

[0025] Figure 5 It is a schematic view of the structure of the present invention in the unfolded state.

[0026] Figure 6 It is a schematic view of the hinge pin structure of the present invention in the unfolded state.

[0027] Figure 7 It is a schematic view of the laser of the present invention.

[0028] Figure 8 It is a sectional view of the instrument installation rod 1 of the present invention.

[0029] Figure 9 It is a schematic view of the installation of the sleeve 2 and the instrument installation rod 1 of the present invention.

[0030] Figure 10 It is a structural diagram of the present invention vertically placed in the fully unfolded state.

[0031] Figure 11 It is a schematic view of the sleeve 2 in the middle of the stroke of the present invention.

[0032] Figure 12 This is a schematic diagram of the fully extended casing 2 of the present invention. Detailed implementation manners

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] As shown in the attached Figure 1 - attached Figure 8 As shown, a high-resolution foldable water pool flow velocity profile scanning device for deep water shows a combination of 10 instrument mounting rods. Each instrument mounting rod has a length of 1 meter, a bottom casing stroke of 1 meter, and can extend up to 11 meters. It includes an instrument mounting rod 1, and a casing 2 is connected inside the instrument mounting rod 1. The casing 2 is welded with a steel plate as a base 3, and a laser 10 is fixed on the base 3; the instrument mounting rod 1 and the instrument mounting rod 11 are connected by a hinge 4, and the connection method is fixed by screws. The instrument mounting rod 11 and the instrument mounting rod 12 are connected by a hinge 41, and so on;

[0035] The front end of the instrument mounting rod is equipped with male pins 5 and 52, which are fixed by screws. In the unfolded state, they can be connected and fixed to the female pins 6 and 62 at the front end of the instrument mounting rod 11. At the rear end of the instrument mounting rod 11, male pins 51 and 53 are fixed, and in the unfolded state, they can be connected to the female pins 61 and 63 at the rear end of the instrument mounting rod 12, and so on;

[0036] The current meter 7 is fixed on the instrument mounting rod 1 by bolts through clamps 8 and 9. Similarly, each current meter is fixed on the corresponding instrument mounting rod in this way. The top rod 13 is used as the main height adjustment device and is also marked with scale lines. It is not necessary to install a current meter and is connected to the trailer.

[0037] Among them, the installation method of the above-mentioned casing 2 and the instrument mounting rod 1 is as shown in the attached Figure 9 As shown, the bottom of the instrument mounting rod 1 adopts a sealed structure, and two bearings, namely bearing 21 and bearing 22, are fixed at the bottom. The casing 2 is limited by the above two bearings. In this way, when the trailer pushes and pulls the top rod 13 at the top to adjust the height, the instrument mounting rod 1 will slide up and down along the casing 2.

[0038] As shown in the attached Figure 3 As shown, both the male pin 51 and the female pin 61 are fixed on the instrument mounting rod by hexagon bolts, and the lower nuts are tightened, making the whole relatively firm and not falling off. The hinge 41 is fixed between the two folding tubes by countersunk head screws. When the hinge is unfolded, the two folding tubes are joined end to end, and the male pin is inserted into the female pin to complete the unfolded state.

[0039] As shown in the attached Figure 4As shown, the clamp 7 and the clamp 9 clamp the instrument mounting rod and the current meter in the middle from above and below, and are fixed by four bolts. The lower clamp 9 has threaded holes and does not require nuts. By adjusting the tightness of the bolts, the current meter can slide up and down.

[0040] As shown in the appendix Figure 5 and the appendix Figure 6 As shown, the overall bracket is in an unfolded state. The folding page 4 is unfolded at an angle of 180°. The male plug 5 is inserted into the female plug 6, and the rest of the instrument mounting rods are the same. Thus, the bracket is unfolded and the flow measurement begins.

[0041] As shown in the appendix Figure 7 As shown, the laser 10 is fixed to the base 3 by screws. The hole positions of the base 3 are determined, the relative positions are determined, and the direction is the same as that of the current meter. It has threaded holes to avoid the base not being flat due to screwing nuts below, which affects the stability.

[0042] As shown in the appendix Figure 8 As shown, the instrument mounting rod 1 is sleeved outside the square tube 2. The outer wall size of the square tube 2 is smaller than the inner wall size of the instrument mounting rod 1. The top of the square tube 2 has a flange. The position near the top inside the instrument mounting rod 1 is sealed, and the lower end is constricted. The size is smaller than the flange at the top of the square tube 2, thus playing a limiting role.

[0043] The above are the preferred embodiments of the present invention. Those of ordinary skill in the art can also make various transformations or improvements on this basis. Without departing from the general concept of the present invention, these transformations or improvements should fall within the scope of protection required by the present invention.

Claims

1. A water-depth high-resolution foldable pool flow velocity profile scanning device, characterized in that: It includes multiple instrument mounting rods that can be folded in sequence, and each instrument mounting rod is connected by a hinge; a male plug is fixedly provided at one end of each instrument mounting rod for connecting with the female plug of the adjacent instrument mounting rod; a female plug is provided at the other end of each instrument mounting rod for connecting with the male plug of the adjacent instrument mounting rod; the male plug and the female plug cooperate with each other for easy opening and fixing. The first instrument mounting rod at the bottom is a telescopic nested tube structure, and the outer tube and the inner tube cannot fall off, and the outer tube slides along the inner tube. The lower end of the inner tube is welded with a base, and a laser is fixed on the base; the flow velocity meter is fixed on each instrument mounting rod by two upper and lower clamps with screws, and dimension scale lines for adjusting the installation position of the flow velocity meter are engraved on each instrument mounting rod. Another dimension scale line is engraved on the top rod of the instrument mounting rod. When the device is installed in place, the high-precision adjustment of the water-depth position of the flow velocity meter is realized by moving the top rod up and down and observing the other dimension scale line, so as to achieve the purpose of high water-depth resolution of flow velocity measurement. The instrument mounting rod is a square tube structure, and a set of ballast is placed inside to adjust the weight to cope with different depths and water flow velocities. Ballast is placed on the upper part of the base to fix it to the bottom of the water. The laser is installed in the same direction as the flow velocity meter, which is convenient for determining the direction of the flow velocity meter in deep water. The flow velocity meter is fixed on the instrument mounting rod by two upper and lower clamps. The clamps are connected by screws, and the tightness of the clamps can be adjusted so as to slide up and down on the instrument mounting rod; the instrument mounting rod can be freely installed and disassembled to cope with the measurement of different water levels.

2. The water depth high-resolution foldable pool flow velocity profile scanning device according to claim 1, characterized in that: A pair of hinges are fixed on the side surfaces at both ends of the instrument mounting rod by screws in a facing manner.

3. The water depth high-resolution foldable pool flow velocity profile scanning device according to claim 1, characterized in that: The male plug and the female plug are fixed on the instrument mounting rod by screws.

4. The water depth high-resolution foldable pool flow velocity profile scanning device according to claim 1, characterized in that: Male plugs / female plugs are fixed on both the front and back sides of all instrument mounting rods, so as to ensure the rigidity of the overall bracket in the unfolded state.

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