阅读说明：本技术 一种便携式船舶排水量测量仪 (Portable ship drainage amount measuring instrument ) 是由 张卓 毕坚裔 张成顺 王平 于 2019-11-08 设计创作，主要内容包括：本发明提出的是便携式船舶排水量测量仪。具有上封头、下封头、计量管、软管和探头,在上封头与下封头之间紧密连接有计量管,下封头的下部通过软管连接有探头坠入水下；上封头顶部外侧设有同位基准的卡尺和刻度尺,上封头顶部设置带有手柄的进水开关；在计量管内设有液位浮子,进水开关通过压紧弹簧与阀杆连接,阀杆的下部连接有锥形阀与下封头形成密闭结构,保证计量管的水密性。本发明采用浮子液位计原理,设置深水探头及加长软管,通过深水探头修正波浪和海况影响,使测量数据更加精准；进水开关关闭时,保证器具水密性,方便手持近距离观测；通过毛细原理的修正计算,使设备更具通用性和准确性。适宜作为船舶排水量测量应用。(The invention provides a portable ship drainage amount measuring instrument. The underwater water meter is provided with an upper end enclosure, a lower end enclosure, a metering pipe, a hose and a probe, wherein the metering pipe is tightly connected between the upper end enclosure and the lower end enclosure, and the lower part of the lower end enclosure is connected with the probe through the hose and falls into the water; the outer side of the top of the upper sealing head is provided with a caliper and a graduated scale with the same-position reference, and the top of the upper sealing head is provided with a water inlet switch with a handle; a liquid level float is arranged in the metering pipe, the water inlet switch is connected with the valve rod through a compression spring, and the lower portion of the valve rod is connected with a conical valve to form a closed structure with the lower end enclosure, so that the water tightness of the metering pipe is guaranteed. The invention adopts the principle of a floater liquid level meter, the deep water probe and the lengthened hose are arranged, and the influence of waves and sea conditions is corrected through the deep water probe, so that the measured data is more accurate; when the water inlet switch is closed, the water tightness of the instrument is ensured, and the handheld close-range observation is facilitated; the equipment has higher universality and accuracy through the correction calculation of the capillary principle. The method is suitable for measuring the displacement of the ship.)

1. A portable ship drainage volume measuring instrument is characterized in that: the underwater water meter is provided with an upper end enclosure (2), a lower end enclosure (11), a metering pipe (7), a hose (12) and a probe (13), wherein the metering pipe is tightly connected between the upper end enclosure and the lower end enclosure, and the lower part of the lower end enclosure is connected with the probe through the hose and falls into the water; a caliper (1) and a graduated scale (8) with the same reference are arranged on the outer side of the top of the upper sealing head, and a water inlet switch (3) with a handle (4) is arranged on the top of the upper sealing head; a liquid level float (9) is arranged in the metering pipe, the water inlet switch is connected with a valve rod (6) through a compression spring (5), and the lower portion of the valve rod is connected with a conical valve (10) to form a closed structure with a lower end enclosure, so that the water tightness of the metering pipe is guaranteed.

2. The portable ship water discharge amount measuring instrument according to claim 1, wherein: the top that upper cover and metering tube are connected is equipped with the bleeder vent for liquid is full of the metering tube fast.

3. The portable ship water discharge amount measuring instrument according to claim 1, wherein: the cone-shaped valve is a cone-shaped watertight valve, is in a closed state in a normal state, and is closed by virtue of a valve rod and a compression spring.

4. The portable ship water discharge amount measuring instrument according to claim 1, wherein: the outside of the metering tube is provided with a graduated scale, the upper surface of the caliper is a reference 0 position, and the graduated scale is calibrated based on the 0 position.

5. The portable ship water discharge amount measuring instrument according to claim 1, wherein: the metering tube is made of organic glass materials.

6. The portable ship water discharge amount measuring instrument according to claim 1, wherein: the probe is a deep water probe and has a certain weight, so that the stability of the hose under water can be ensured.

Technical Field

The invention relates to a ship measuring device, in particular to the displacement of ships.

Background

In the state that the ship is about to complete, the weight and the gravity center of the ship need to be measured according to the requirements of the international maritime organization, and the measurement result relates to the result of the safety evaluation of the ship. Especially, the method has important significance for the continuity of the test result of the sister ship, and the gravity center position of the ship needs to be determined again when the allowable error range is exceeded.

The empty ship weight is determined by subtracting the excess weight and the insufficient weight from the empty ship test displacement. Excess and insufficient weight are generally allowed to not exceed 1% of the weight of the empty vessel, the determination of the displacement being of crucial importance for the test results. The displacement is usually determined by reading the water gauge markings of the vessel, which are regularly set to 20 cm intervals. For a large ship with an empty ship weight of about 3 ten thousand tons, the ton per centimeter of the empty ship draft can reach 120 tons, and the condition of the subsequent ship inclination-free test is that the weight error is at least not more than 1 percent of the empty ship weight, so that the test failure can be intuitively declared if the draft reading deviation is 3 centimeters. The general test allows sea conditions to be class 2, and the wave influence is more than ten times of the allowable deviation. Therefore, accurate reading of vessel draft data is very important.

Disclosure of Invention

The invention provides a portable ship drainage amount measuring instrument, which can correct the influence of waves on the measurement of ship drainage amount. The measuring instrument corrects the influence of water surface waves and sea conditions through the deep water probe and the lengthened hose, and corrects the capillary phenomenon on the basis; the liquid level in the appliance is kept through the water inlet switch, the reading is convenient and accurate,

the technical problem of accurate measurement of influence of waves for correcting the displacement of the ship is solved.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the portable ship drainage amount measuring instrument is provided with an upper end enclosure, a lower end enclosure, a measuring pipe, a hose and a probe, wherein the measuring pipe is tightly connected between the upper end enclosure and the lower end enclosure, and the lower part of the lower end enclosure is connected with the probe through the hose and falls into the water; the outer side of the top of the upper sealing head is provided with a caliper and a graduated scale with the same-position reference, and the top of the upper sealing head is provided with a water inlet switch with a handle; a liquid level float is arranged in the metering pipe, the water inlet switch is connected with the valve rod through a compression spring, and the lower portion of the valve rod is connected with a conical valve to form a closed structure with the lower end enclosure, so that the water tightness of the metering pipe is guaranteed.

Preferably, the top that upper cover and metering tube are connected is equipped with the bleeder vent for liquid is full of the metering tube fast.

Preferably, the cone-shaped valve is a cone-shaped watertight valve which is in a closed state normally and is closed by a valve rod and a compression spring.

Preferably, the outside of the metering tube is provided with a graduated scale, the upper surface of the caliper is a reference 0 position, and the graduated scale is calibrated based on the 0 position.

Preferably, the metering pipe is made of organic glass materials.

Preferably, the probe is a deep water probe and has a certain weight, so that the stability of the hose under water can be ensured.

The invention has the advantages that the traditional water gauge reading mode is changed by adopting the principle of the float liquid level meter, so that the water gauge data can be conveniently and accurately read; the deepwater probe and the lengthened hose are arranged, and the influence of waves and sea conditions is corrected through the deepwater probe, so that the measured data is more accurate; the metering tube is made of light durable organic glass materials, and is provided with a portable handle and a water inlet switch, so that the metering tube is convenient to hold by a single hand for operation; when the water inlet switch is closed, the water tightness of the instrument is ensured, and the handheld close-range observation is facilitated; the equipment has higher universality and accuracy through the correction calculation of the capillary principle. The method is suitable for measuring the displacement of the ship.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

In the figure, 1, a caliper, 2, an upper end enclosure, 3, a water inlet switch, 4, a handle, 5, a compression spring, 6, a valve rod, 7, a metering pipe, 8, a graduated scale, 9, a liquid level floater, 10, a conical valve, 11, a lower end enclosure, 12, a hose and 13, a probe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to the figure, the portable ship drainage amount measuring instrument is provided with an upper end enclosure 2, a lower end enclosure 11, a measuring pipe 7, a hose 12 and a probe 13, wherein the measuring pipe is tightly connected between the upper end enclosure and the lower end enclosure, and the lower part of the lower end enclosure is connected with the probe through the hose and falls into the water; the outer side of the top of the upper sealing head is provided with a caliper 1 and a graduated scale 8 with the same reference, and the top of the upper sealing head is provided with a water inlet switch 3 with a handle 4; a liquid level float 9 is arranged in the metering pipe, the water inlet switch is connected with a valve rod 6 through a compression spring 5, the lower portion of the valve rod is connected with a conical valve 10 to form a closed structure with a lower end enclosure, and the water tightness of the metering pipe is guaranteed.

The top that upper cover and metering tube are connected is equipped with the bleeder vent for liquid is full of the metering tube fast.

The cone-shaped valve is a cone-shaped watertight valve, is in a closed state in a normal state, and is closed by virtue of a valve rod and a compression spring.

The outside of the metering tube is provided with a graduated scale, the upper surface of the caliper is a reference 0 position, and the graduated scale is calibrated based on the 0 position.

The metering tube is made of organic glass materials.

The probe is a deep water probe and has a certain weight, so that the stability of the hose under water can be ensured.

The working principle is as follows:

the principle of the liquid level meter is utilized, the metering tube with scales is arranged, the principle that deep water pressure is basically not influenced by waves of the water meter is utilized, the lengthening tube and the probe are used for penetrating into water, the water pressure in the metering tube is not influenced by the outside, and therefore stable liquid level reading is obtained.

When the metering pipe is designed, the correction of the capillary phenomenon of the metering pipe is considered, the liquid level rising or falling value (h) of the capillary phenomenon is related to the surface tension (gamma) of the liquid level, the hydrophilic angle (theta), the density (rho) of the seawater or fresh water, the gravity acceleration (g) and the radius (r) of the metering pipe, and the calculation formula is as follows:

for hydrophilic or hydrophobic media, which will cause the liquid level to rise or fall, a modified table giving different metering tube radii r and hydrophilic angles θ for seawater is as follows:

the working process is as follows:

1. before the measuring instrument is used, the water tightness of the valve needs to be confirmed, the probe and the hose are placed in water in advance, and the hose is arranged according to the water depth of a tested water area, so that the probe is not suitable to touch the bottom and is not too short; and the switch is turned on to fully inject water;

2. during measurement, a proper water gauge position is selected, the upper surface of the caliper is abutted against the water gauge, the upper surface of the caliper is a reference 0 position, and the graduated scale is calibrated based on the 0 position;

3. opening a water inlet switch, observing a liquid level floater, and slowly closing the water inlet switch after the liquid level floater is stabilized;

4. taking down the measuring instrument, and reading the liquid level at a proper position;

5. and calculating a drainage value according to the liquid level correction table.

The method is characterized in that:

the metering tube is made of light durable organic glass materials, and liquid level errors caused by capillary phenomenon are corrected during scale design; a portable handle and a water inlet switch are designed, so that the operation of holding by a single hand is convenient; the influence of waves and sea conditions is corrected through a deep water probe; when the water inlet switch is closed, the water tightness of the instrument is ensured, and the handheld close-range observation is convenient.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.