JPH0416190Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a non-uniform flow field measuring device.

Non-uniform flow field measurements such as ship wake tests are generally performed by placing various models in a water tank. There is a tank used for this purpose called a cavitation tank. This kind of aquarium is the first
As shown in the figure, there is a circulation flow path 10 vertically arranged, and a measurement section 14 is provided approximately at the center of the flow path 12 above the circulation flow path 10 .

For example, a ship model 1 is placed inside this measuring section 14.
6 etc. will be installed to simulate non-uniform flows such as ship wakes. At that time, the flow velocity distribution was measured at a position near the hull model 16,
This is used to measure non-uniform flows such as wakes.

One type of such a non-uniform flow field measuring device is one in which the measuring device 18 is attached to the top plate 20 of the measuring section 14.

FIG. 2 is a side sectional view showing a schematic configuration of a conventional example of such a measuring device, in which 22 is a plate-shaped base attached to the top plate 20, and 24 is a sword (24) attached to this base. pillar-shaped member)
It is. A long cylindrical casing 26 is attached to the lower end of the sword 24, and a casing cap 30 is rotatably supported at the tip of the casing 26. A wing 28 extends in a direction perpendicular to the axis of the casing 26 and is integrated with the casing cap 30. A water pressure sensor tube 32 such as a pitot tube or a five-hole tube is attached to the tip of the wing 28, and the water pressure sensor tube 32 is attached so as to be movable along the end of the wing 28. The wing 28 is rotatable as shown by the arrow θ, and the water pressure sensor pipe 32 is capable of reciprocating linear movement as shown by the arrow R. Therefore, the water pressure sensor pipe 32 covers the entire circular area indicated by A. be able to. Note that the arrow W in the figure indicates the flow direction of water.

However, in such a conventional device, since the movement of the water pressure sensor tube 32 is limited, it is difficult to assemble (position) the water pressure sensor tube 32 with the hull model 16 (see Fig. 1), and it is difficult to set it up before the start of the test and during the test. There were problems such as it took a long time to change the setting position.

It is an object of the present invention to provide a non-uniform flow field measuring device that solves the problems of the prior art described above and allows the water pressure sensor tube to be attached to the ship model extremely easily.

In order to achieve this purpose, the non-uniform flow field measuring device of the present invention includes: a plate-shaped base having an elongated opening; and a plate-shaped base that is inserted into the opening and movable in the longitudinal direction of the opening. a sealing member disposed between the upper section ord and the base; a lower section connected to the upper section so as to be movable in the vertical direction; A long cylindrical casing provided at the lower end; a wing rotatably attached to one end of the casing and extending in a direction perpendicular to the longitudinal direction of the casing; and an end portion of the wing on the side opposite to the casing. protrudes from,
a water pressure sensor pipe movably attached along the end of the wing and communicating with the detection section; a screw shaft for moving the upper passage extending along the longitudinal direction of the opening; and a screw shaft for moving the upper passage. a main motor connected to a moving screw shaft; a screw installed in the at least one shaft and engaged with the screw shaft;
a means for longitudinally moving the upper orthode, a motor for vertically moving the lower orthode installed in the upper orthode, and a connecting member connected to the motor for vertically moving the lower orthode via a gear box and also connected to the lower orthode. a means for vertically moving the lower orifice; a wing rotation motor installed in the upper aord; and a wing rotation motor connected to the wing rotation motor via a shaft and a gear mechanism and integrally connected to the wing. cap casing,
a motor for moving the water pressure sensor pipe installed in the upper section; and a motor for moving the water pressure sensor pipe connected to the motor for moving the water pressure sensor pipe via a shaft and a gear mechanism, and a screw shaft for moving the water pressure sensor pipe that is engaged with a screw carved in the water pressure sensor pipe.

The present invention will be explained in more detail below with reference to embodiments shown in the drawings.

FIG. 3 is a side sectional view showing the configuration of a non-uniform flow field measuring device according to an embodiment of the present invention. Reference numeral 22' denotes a base in which an elongated opening 34 is bored. And in this opening 34, there is an atsupasorode 2.
4a is inserted, and the lower orthode 24b is fitted into the upper orthode 24a. Reference numeral 35 is a support stand for the atspersord 24a, and the base 2
It is movable along a guide rail 39 fixed to 2'. Also, Atsupas Ord 24a
A gear box 36 in which a motor 37 for raising and lowering the lower aord 24b and gears are housed is installed in the lower aord 24b, and the output side of the gear box 36 is connected to the upper end of the lower aord 24b via a connecting member 38. Therefore, by driving the motor 37, the lower orifice 24b is moved up and down.

A long cylindrical casing 26 is attached to the lower end of the lower ordinal 24b, and a cap casing 30 is attached to one end of the casing 26.
is rotatably attached, and the wing 28 is integral with this cap casing 30. Further, a water pressure sensor tube 32 such as a pitot tube or a five-hole tube projects from the end of the wing 28 and is supported so as to be movable along the tip of the wing 28 .

A motor 40 for moving the water pressure sensor pipe is attached to the upper part of the upper part ord 24a, and a first shaft 42 connected to the motor 40 is connected to a spline joint (not shown) provided in the middle.
The signal is inputted to the first bevel gear mechanism 44 inside the casing 26 via. Power is transmitted from the first bevel gear mechanism 44 to a second bevel gear mechanism 47 inside the cap casing 30 via a clutch 45 and a second shaft 46, and this power is further transmitted to the second bevel gear mechanism 47. The signal is transmitted to a screw shaft 48 connected to a gear mechanism 47. The screw shaft 48 engages a thread 50 cut into the end of the water pressure sensor tube 32. 52 is a guide for smoothly moving the water pressure sensor tube 32. Therefore, by driving the motor 40 for moving the water pressure sensor pipe, the screw shaft 48 is rotated, and the water pressure sensor pipe is moved to the guide 5 via the screw 50.
2 in the direction of arrow R.

Further, a wing rotation motor 54 is attached to the upper part of the atsupahsord 24a, and a third shaft 56 connected to the output shaft of this motor 54 is connected to the inside of the casing 26 via a spline joint (not shown). It is input to the third bevel gear mechanism 58 located at. The output of the third bevel gear mechanism 58 is transmitted through a shaft 59 and a disc member 60 fixed to the inner peripheral surface of the cap casing 30.
is transmitted to the cap casing 30 via.
Therefore, by driving the wing rotation motor 54, the cap casing 30 is rotated, and the wing 28, which is integrated with the cap casing 30, is rotated as shown by the arrow θ.

However, a stopper 61 is provided at one end of the base 22'.
is fixedly installed, and a main motor 62 is arranged on the opposite side of the base 22'. The output shaft of the main motor 62 is connected to a main screw shaft 64, and the main screw shaft 64 meshes with a female thread 66 attached to the upper shaft 24a.
Therefore, when the main motor 62 is driven, the main screw shaft 64 rotates, and the upper shaft 24a is moved along the longitudinal direction of the opening 34 as indicated by the arrow S via the female screw 66. When the upper part ordination 24a moves in the front-rear direction, the lower ordination 24b and the casing 2 supported by these parts
6. The wing 28, water pressure sensor pipe 32, etc. also move together.

Note that FIG. 4 is a cross-sectional view taken along the line of FIG. 3, and shows the cross-sectional shape of the wing 28. As shown in FIG. 4, the wings 28 have an airfoil-shaped cross section. Further, FIG. 5 is a cross-sectional view taken along the line in FIG. 3, and shows the cross-sectional shape of the lower ordinal 24b. As shown in the figure, the lower arm 24b also has a substantially airfoil-shaped cross-sectional shape, and through holes 68, 70, and 72 are provided therein. Through hole 68
is a hole through which a tube 74 connecting the water pressure sensor tube 32 and a detection section (not shown) is inserted, a third shaft 56 is inserted into the through hole 70, and a first shaft is inserted into the through hole 72. 42 is inserted. Note that 76 in the figure is a sealing member fixed to the lower surface of the sword support base 35.

In the non-uniform flow field measuring device according to the embodiment configured in this way, the upper path 24a
can change its position in the front-rear direction, and the lower aord 24b can change its position in the up-down direction, so that the wing 28 can be freely displaced in the front-rear and up-down directions, and the measurement area plane in the aquarium and the area plane The center depth can be easily set. Furthermore, water pressure sensor pipe 32
can change its position in the radial direction as shown by the arrow R, and can also move freely within a plane perpendicular to the casing 26 as the wing 28 rotates as shown by the arrow θ. Furthermore, main motor 6
By driving 2, the position of the water pressure sensor pipe in the water flow direction can also be changed. Therefore, it becomes extremely easy to connect the flow field measuring device and the model, and the efficiency of testing using this device is greatly improved.

In the above embodiment, the water pressure sensor pipe 32,
Although the wing 28 and the sword are all moved by a motor drive system, the present invention is not limited to motor drive, and various drive mechanisms such as manual, hydraulic, and water pressure can be adopted. Of course.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the configuration of a cavitation water tank, FIG. 2 is a cross-sectional view showing the configuration of a conventional measuring device, FIG. 4 is a sectional view taken along the - line in FIG. 3, and FIG. 5 is a sectional view taken along the - line in FIG. 3. 10... Cavitation aquarium, 22'... Base, 24a... Attupursuord, 24b...
Lower aord, 26...Casing, 28...Wing, 30...Cap casing, 32...
Water pressure sensor pipe, 34...Opening, 35...Atsupursuord support stand, 40...Motor for moving water penstock,
54...Wing rotation motor, 62...Main motor, 66...Female thread.

Claims (1)

[Claims for Utility Model Registration] A plate-shaped base having an elongated opening; an atsushi ord that is inserted into the opening and supported by the base so as to be movable in the longitudinal direction of the opening; a sealing member disposed between the upper passage ordinal and the base; a lower ordination connected to the upper ordination so as to be movable in the vertical direction; and a long cylindrical casing provided at the lower end of the lower ordination. , a wing rotatably attached to one end of the casing and extending in a direction perpendicular to the longitudinal direction of the casing; and a wing protruding from an end on the side opposite to the casing of the wing;
a water pressure sensor pipe movably attached to the end of the wing and communicating with the detection section; a screw shaft for moving the upper passage extending along the longitudinal direction of the opening; and a screw shaft for moving the upper passage. a main motor connected to a moving screw shaft; a screw installed in the at least one shaft and engaged with the screw shaft;
a means for longitudinally moving the upper orthode, a motor for vertically moving the lower orthode installed in the upper orthode, and a connecting member connected to the motor for vertically moving the lower orthode via a gear box and also connected to the lower orthode. a means for vertically moving the lower arm, comprising: a wing rotation motor installed in the upper arm; and a wing rotation motor connected to the wing rotation motor via a shaft and a gear mechanism and integrally connected to the wing. cap casing,
a motor for moving the water pressure sensor pipe installed in the upper section; a motor for moving the water pressure sensor pipe connected to the motor for moving the water pressure sensor pipe via a shaft and a gear mechanism; and a screw shaft for moving the water pressure sensor pipe that is engaged with a screw carved in the water pressure sensor pipe.