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CN-122009421-A - Ship draft observation device with wave-absorbing function

CN122009421ACN 122009421 ACN122009421 ACN 122009421ACN-122009421-A

Abstract

The invention provides a ship draft observation device with a wave-absorbing function, which comprises a main cylinder, wherein a transparent pipe body parallel to a ship water gauge is arranged at the top end of the main cylinder, a floating sheet for indicating the position of a water body in the transparent pipe body is arranged in the transparent pipe body, a current-limiting water inlet structure communicated with the transparent pipe body is arranged in the main cylinder, a counterweight assembly positioned at the peripheral side of the transparent pipe body is arranged at the top end of the main cylinder, and a wave buffer device is detachably arranged at the bottom end of the main cylinder.

Inventors

  • WEI YAOMING
  • Ji Wuxuan
  • SONG HAOYI

Assignees

  • 上海海事大学

Dates

Publication Date
20260512
Application Date
20260323

Claims (6)

  1. 1. The ship draft observation device with the wave-absorbing function is characterized by comprising a main cylinder (1), wherein the top end of the main cylinder (1) is provided with a transparent pipe body (2) with the length matched with the height of a ship water gauge and parallel to the ship water gauge, and a floating piece (3) for indicating the position of the water body in the transparent pipe body (2) is arranged in the transparent pipe body (2); Be equipped with in main section of thick bamboo (1) with transparent body (2) are linked together and are used for carrying out the current-limiting water inflow structure that attenuates to the instantaneous water level variation that external wave arouses, the top of main section of thick bamboo (1) is equipped with and is located transparent body (2) week side just is used for promoting overall stability and keeps transparent body (2) are in counter weight subassembly (6) of vertical state, the bottom detachably of main section of thick bamboo (1) is installed and is used for further weakening the wave buffer of outside water fluctuation to the whole gesture of device and intraductal water body influence.
  2. 2. The ship draft observation device with the wave-absorbing function according to claim 1, wherein the floating piece (3) is made of a light corrosion-resistant floatable material, and a high-contrast visual mark is arranged on the surface of the floating piece (3), and comprises but is not limited to fluorescent colors and reflective marks.
  3. 3. The ship draft observation device with the wave-absorbing function according to claim 1, wherein the current-limiting water inlet structure comprises a water inlet hole (4) which is formed in the main cylinder (1) and communicated with the transparent pipe body (2), and a water inlet for external water to enter is formed in the end, away from the transparent pipe body (2), of the water inlet hole (4).
  4. 4. The ship draft observation device with the wave-absorbing function according to claim 1, wherein the counterweight assembly (6) comprises a plurality of detachable magnets (601) which are positioned above the main cylinder (1), and the plurality of magnets (601) are sequentially arranged on the periphery side of the transparent pipe body (2) along the height direction of the transparent pipe body (2).
  5. 5. A ship draft observation device with a wave absorbing function according to claim 1, wherein the wave absorbing device comprises a first wave absorbing assembly (7) or a second wave absorbing assembly (8) which is detachably arranged at the bottom end of the main cylinder (1), and the first wave absorbing assembly (7) comprises a rotor connecting ring (701) arranged at the bottom end of the main cylinder (1) and a rotor (702) which is arranged on the rotor connecting ring (701) and used for inhibiting the ship draft observation device from vibrating.
  6. 6. The ship draft observation device with the wave elimination function according to claim 5, wherein the second wave buffer assembly (8) comprises a rotating piece (801) which is installed at the bottom end of the main cylinder (1) and used for inhibiting the ship draft observation device from vibrating, and the rotating piece (801) comprises a rotating shaft and rotating pieces which are uniformly arranged along the circumferential direction of the rotating shaft at intervals.

Description

Ship draft observation device with wave-absorbing function Technical Field The invention relates to the technical field of ship draft observation, in particular to a ship draft observation device with a wave-absorbing function. Background The accuracy of the draft readings of the vessel directly affects the reliability of cargo volume confirmation and economic settlement in cargo delivery. The stable, repeatable and recordable draft measurement results are beneficial to improving fairness, transparency and operation efficiency of the cargo delivery process and reducing economic disputes and management risks caused by measurement errors. In the prior art, the draft reading measurement mode of bulk cargo ships in the industry at present mainly depends on that crews read the scale of a water gauge through naked eyes to judge the actual draft of the ship. Under the condition that the water surface condition is relatively calm, the method is visual to operate and is adopted by industries for a long time, and the basic observation requirement can be met. However, under the condition of wave action, the water surface is in a dynamic fluctuation state, scale marks are often shielded by wave crests and wave troughs alternately, instantaneous water level boundaries are difficult to identify stably, accurate readings are difficult to obtain by manual visual inspection, and water level estimation is often only carried out by relying on experience, so that accuracy and consistency of draft readings are poor. In addition, under night or low visibility condition, the visibility between the scale of the water gauge and the water level is obviously reduced, the manual observation difficulty is further increased, and the reliability is obviously insufficient. To improve the limitations of manual observation, some of the prior art have proposed using simple auxiliary devices to improve the accuracy of the readings. For example, 1, a ratchet float stabilizes the water gauge, which is an improved traditional water gauge that resists waves through mechanical structures. The key point is that a ratchet or a locking mechanism is arranged on the float rod, and when the float rod is observed manually, the position of the float can be locked manually, so that the float rod is temporarily fixed, and the relative static water level scale is read. The method can effectively eliminate the instant liquid level fluctuation caused by waves, so that the reading is more stable, but the method is still dependent on manual interpretation per se. 2. Self-powered water gauge reading device, this kind of device has integrated mechanical buffering and sensing technology. The wave buffer assembly absorbs and filters high-frequency wave of water surface by using springs, corrugated floating plates and the like, and forms a relatively stable local liquid level in the water gauge observation cavity. The liquid level sensor (such as magnetostriction and capacitance) installed inside can automatically read the stable liquid level height and transmit data, so that the initial conversion from manual observation to automatic reading is realized. 3. The electronic water gauge converts the scale of the water gauge into an electric signal. The principle is that a series of equidistant electrodes are arranged in the water gauge pipe, and the water level is judged by detecting the on-off of a conductive path between the electrodes and water. The device does not depend on optical observation, is not influenced by light, wave shielding and water turbidity, can directly output discrete digital signals, and is limited by the arrangement density of electrodes. 4. High-precision pressure sensor systems, which are one of the mainstream technologies currently used for precision metering such as trade settlement. The method is characterized in that a high-precision pressure transmitter is directly arranged at the bottom of a ship, the static pressure of a water column at the position is accurately measured, and the static pressure is converted into draft according to the density of a water body. The system can realize continuous and real-time monitoring with millimeter-level precision, data can be directly integrated into a ship loading system, but the installation and calibration requirements are high, and the sensor is required to be directly contacted with seawater. 5. An ultrasonic detection system, which is a ship draft real-time detection system based on an ultrasonic sensor. The ship draft mark is characterized by comprising a plurality of ultrasonic sensors, a data transmission line, a USB connecting line, a singlechip terminal and an upper computer, wherein the ultrasonic sensors are respectively arranged on the ship side above the ship draft mark and are connected with the singlechip terminal through the data transmission line, and the output end of the singlechip terminal is connected with the upper computer through the USB connecting line. 6. A laser radar/la