Underwater noise measuring seat plate

Abstract

The utility model provides an underwater noise measuring seat plate, comprising a fixed seat plate and a sealing seat plate, the fixed seat plate and the sealing seat plate are buckled together, the sealing seat plate is provided with a through first through hole, the fixed seat plate is provided with a through second through hole, and the second through hole is opposite to the first through hole; the size of the end, close to the sealing base plate, of the second through hole is matched with that of the first through hole, and a blind plug is arranged at the end, away from the sealing base plate, of the second through hole. According to the utility model, aiming at a ship with an underwater noise grade-entering symbol requirement, the configuration of the underwater noise measuring seat plate can carry out a preliminary test before a formal underwater noise measurement test, and assesses whether a far-field test is feasible in advance, thereby avoiding the risk of additionally increasing the far-field test in a shipyard, and even avoiding the risk of secondary trial voyage.

Description

Technical Field

[0001] The utility model belongs to the technical field of underwater noise measurement, and particularly relates to an underwater noise measurement seat plate. Background Art

[0002] Scientific research vessels generally have high requirements for underwater noise, especially for ships that need to obtain underwater noise classification symbols. According to the CCS "Guidelines for Underwater Radiated Noise from Ships", underwater noise testing must be carried out using the far-field method. However, the far-field testing process is relatively complex and is greatly affected by various factors. Therefore, it is necessary to conduct a thorough preliminary test before testing.

[0003] The far-field testing process is relatively complex and is greatly affected by factors such as sea conditions and the surrounding environment. If a sufficient preliminary test cannot be carried out in advance, the ship will need to return to the shipyard for further investigation, analysis and rectification after failure, and a second sea trial will be required, which will extend the shipbuilding cycle and increase shipbuilding costs. Utility Model Content

[0004] In order to solve the technical problems in the prior art, the utility model provides an underwater noise measurement base plate, comprising a fixed base plate and a sealing base plate, wherein the fixed base plate and the sealing base plate are buckled together, a first through hole is formed on the sealing base plate, and a second through hole is formed on the fixed base plate, wherein the second through hole is directly opposite to the first through hole;

[0005] The second through hole is a stepped hole. The size of the second through hole at one end close to the sealing seat plate matches that of the first through hole. A blind plug is provided at one end of the second through hole away from the sealing seat plate.

[0006] Furthermore, the fixed seat plate is fixedly connected to the hull outer plate by welding, and the sealing seat plate is fixedly connected to the fixed seat plate by fasteners such as bolts and gaskets.

[0007] Furthermore, when measuring underwater noise, the blind plug is removed and a measuring sensor is installed for measurement.

[0008] Furthermore, after the measurement is completed and the measuring sensor is removed, the blind plug needs to be installed again to ensure watertightness.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] The utility model is aimed at ships with underwater noise classification notation requirements. The configuration of the underwater noise measurement seat plate can be used for preliminary testing before the formal underwater noise measurement test, so as to evaluate in advance whether the far-field test is feasible, avoid the risk of additional far-field testing in the shipyard, and even avoid the risk of a second sea trial. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the present utility model.

[0012] Serial numbers and names of the accompanying drawings: 1. Gasket, 2. Fixed seat plate, 3. Hull shell, 4. Fixing bolts, 5. Sealing seat plate, 6. Blind plug. DETAILED DESCRIPTION

[0013] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0014] Reference Figure 1 , this application proposes an underwater noise measurement base plate, the design principle of which is as follows:

[0015] The underwater noise measurement base plate consists of a fixed base plate, a sealing base plate, a blind plug, fixing bolts and a gasket;

[0016] The fixed seat plate is fixedly connected to the hull outer plate by welding, and the sealing seat plate is fixedly connected to the fixed seat plate by fasteners such as bolts and gaskets;

[0017] When measuring underwater noise, remove the blind plug and install the measuring sensor for measurement;

[0018] After the measurement is completed and the measuring sensor is removed, the blind plug must be installed again to ensure watertightness.

[0019] The present invention adds an underwater noise measurement base plate to the hull structure near the main propeller of the ship, so that the underwater noise test can be fully tested before the far-field test is carried out in accordance with the requirements of the CCS "Guidelines for Underwater Radiated Noise of Ships", thereby evaluating whether to conduct far-field testing.

[0020] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent changes and modifications made within the scope of the present invention and the contents of the specification are within the scope covered by the present invention.

Claims

1. An underwater noise measurement base plate, comprising a fixed base plate and a sealing base plate, characterized in that: The fixed seat plate is buckled with the sealing seat plate, a first through hole is formed on the sealing seat plate, and a second through hole is formed on the fixed seat plate, the second through hole being opposite to the first through hole; The second through hole is a stepped hole. The size of the second through hole at one end close to the sealing seat plate matches that of the first through hole. A blind plug is provided at one end of the second through hole away from the sealing seat plate.

2. The underwater noise measurement base plate according to claim 1, characterized in that: The fixed seat plate is fixedly connected to the outer plate of the hull by welding, and the sealing seat plate is fixedly connected to the fixed seat plate by bolts and gasket fasteners.

3. The underwater noise measurement base plate according to claim 1, characterized in that: When measuring underwater noise, remove the blind plug and install the measuring sensor for measurement.

4. The underwater noise measurement base plate according to claim 1, characterized in that: After the measurement is completed and the measuring sensor is removed, the blind plug must be installed again to ensure watertightness.

Images