JPS6239723A - Water gauge and method for seawater pouring measurement on deck of model ship using said water gauge - Google Patents

Abstract

PURPOSE:To enable measurement by obtaining linear response even in the vicinity of a zero water level, by providing a water tank to the root parts of a large number of resistance wires. CONSTITUTION:In a water gauge, water tanks 4 are provided to the upper parts of holders 1, that is, the root parts of a large number of resistance wires 2 so that the resistance wires take charge of parts showing strong non-linear responce by the passage of a current. In this state, when driven seawater is contacted with the resistance wire 2 of the arbitrary water gauge 7, the water level thereof is calculated. After the water level is calculated by the arbitrary water gauge 7, a water level is successively calculated by the adjacent water gauge. Then, by detecting the time differences between the water gauges 7 when the water level was successively calculated, a seawater driving speed is calculated because the distances between the water gauges 7 are known. If the driving speed has been calculated, a driving amount is calculated because the water level has been known. By this method, the speed, water level and quantity of seawater pouring onto the deck 6 of a model ship 5 can be measured and good data can be obtained in a water tank test.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the speed of water hitting the deck of a ship in a water tank test,
The present invention relates to a water level gauge for quantitatively checking water level, quantity, etc., and a method of measuring seawater on a model ship deck using the water level gauge.

[Prior art] The speed, water level, and
It is important for actual ship navigation to check the capacity of the ship.

Conventionally, a general capacitive line type water level meter has been used to measure the seawater intrusion, but the water level S1 has the disadvantage that it cannot provide sufficient response to fast water movement. Ta.

Therefore, recently, a resistance wire type water level gauge as shown in FIG. 6 has come into use. This resistance wire type water level gauge is
Resistors $ placed close and parallel to each other so as to protrude from holder 1! Connect the BNC cord 3 connected to the power source to the base end of J2.2, and detect the electrical resistance value when the injected seawater comes into contact between the resistance wires 2.2 and becomes energized. The water level is set to the 81 side. Although the resistance wire type water level gauge is thin overall, it is characterized by being able to stand on its own and not interfering with the movement of water.It also has sufficient responsiveness even to fast water movements, and is widely used. It has advantages that capacitive linear water level gauges do not have.

[Problems to be Solved by the Invention] However, in the case of a certain resistance line type water level h4, as shown in FIG. 7, there is a strong nonlinear response near zero water level (range Accurate measurement near zero was difficult.

The present invention enables accurate measurements even near zero water level.

[Means for Solving the Problems 1] The present invention is such that two resistance wires placed close to each other in parallel are energized through contact with water, and the water level is measured based on the electrical resistance of the two resistance wires. In this resistance wire type water level gauge, a water tank is provided at the base of both the resistance wires for energizing both resistance glands.

[Function] Therefore, the part of the water level that does not show a strong nonlinear response is received by the water tank, and the part of the water level that shows a linear response becomes the shell side range.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

In FIG. 1, reference numeral 7 denotes a water level gauge of the present invention, and in the water level gauge shown in FIG. A water tank 4 is provided to receive the region X in FIG. 7 which shows a strong nonlinear response.

When using the water level gauge 7 having such a configuration, as shown in FIG.
Attach it to deck 6 so that it matches the level. With this type of installation, if the seawater that is injected comes into contact with the resistance wires 2, 2, the water level will drop because the strong nonlinear response area shown by range X in FIG. Even in the vicinity of zero, the portion showing a linear response exceeding the range X is accurately measured.

In addition, when measuring the speed and suspension of the seawater being pumped in using such a water level gauge 7, as shown in FIG. Process J, I) Install and carry out. In this case, the resistance wires 2, 2 of each water level gauge 7
The height of the water should be such that it is higher than the expected water level.

In this state, when the injected seawater comes into contact with the resistance wires 2, 2 of any water level gauge 7, the water level is determined as described above. Further, after the water level is determined by the arbitrary water level gauge 7, the water level is also determined by the adjacent water level gauge 7 in sequence. Since the distance between the water level gauges 7, 7 is known by detecting the time difference between the water level gauges 7, 7 when the water level is sequentially determined, the seawater injection speed can be determined.

Furthermore, if the driving speed is determined, the driving amount can be determined since the water level is known.

In the manner described above, the speed, water level, and amount of seawater pumped onto the deck 6 of the model ship 5 can be measured, and 1q of good data can be obtained in an aquarium test.

In addition, in Fig. 2, the water level gauges 7 with the same length of the resistance wire 2.2 are arranged at the same height, but as shown in Fig. 3, the length of the resistance wire 2.2 is arranged using the insulator 8. They may be arranged in a stair-like manner.

FIGS. 4 and 5 show still other embodiments of the present invention, and 2
This figure shows a state in which a set of water level gauges 7a and 7b are installed vertically and horizontally at predetermined intervals on the deck of a model ship 5 to measure seawater injection. The water level gauge 78 has a measurement range of 1/2h to h of the height h of the relative water level gauge, the water level gauge 7b has a measurement range of 0 to 1/2h, and the water level gauge 7a has a measurement range of 0 to 1/2h.
is covered with an electrical insulator 8 so that 0 to 1/2 h becomes a dead area.

Now, suppose that the water level measured by the water level gauge 78 is 1/2hXO08, and if there is no air layer in the ice block that has been driven into the deck 6, the water level measured by the water level gauge 7b is 1/2hX1, which is 100% submerged. It should be.

However, if the water level measured by the water level gauge 7b is 1/2 h x 0.6, then at least 40 h from 0 to 1/2 h
It can be seen that % was an air layer.

In this way, by using a water level gauge coated with the insulator 8 in combination with the original water level gauge, it becomes possible to accurately investigate the condition of the ice block. Furthermore, if a set of relative water level gauges is constructed from a number of water level gauges 78 in which the lengths of the insulators 8 are changed stepwise, it is possible to know the state of the ice block more accurately.

[Effects of the Invention] As explained above, according to the present invention, by providing the water tank at the base of the resistance line, the line y! even near zero water level.
The response can be measured as follows. Furthermore, by placing multiple units on the deck of a model ship, it is possible to quantitatively determine the speed, water level, amount, etc. of seawater being poured onto the deck, and good data can be obtained in water tank tests.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the water 117 meter of the present invention, Fig. 2 is an explanatory diagram showing the state in which the water level gauge of the present invention is used to measure seawater on a model ship, and Fig. 3 is an explanatory diagram of the water level meter of the present invention. FIG. 4 is a side view showing another embodiment of the present invention, FIG. 5 is a vertical cross-sectional view of FIG. 4, and FIG. 6 is an explanation of a conventional water level meter. Figure 7 shows the characteristics of the resistance wire type water level gauge. 1 is a holder, 2 is a resistance wire, 3 is a BNC cord, 4 is a water tank, 5 is a model ship, 6 is a deck, and 7 is a water level gauge. Patent application Hitoshi Kawajima Harima Heavy Industries Co., Ltd. Patent application Hitoshi Kawajima Harima Heavy Industries Co., Ltd.

Claims (1)

[Scope of Claims] 1) In a resistance wire type water level meter in which two resistance wires are energized through contact with water and the water level is measured based on the electrical resistance value, the root of both resistance wires is A water level gauge characterized by having a water tank installed in the section for energizing both resistance wires. 2) The two resistance wires are configured to be energized through contact with water and the water level can be measured based on their electrical resistance, and the bases of both resistance wires are energized. A plurality of water level gauges each equipped with a water tank are installed on the deck of a model ship, and the speed, level, and amount of seawater injected onto the deck can be determined based on the electrical resistance value determined by each water level gauge. A method for measuring seawater injection onto the deck of a model ship using a water level gauge, which is characterized by quantitatively measuring water level.