CN111236457B - Sound barrier for reducing sound energy loss - Google Patents
Sound barrier for reducing sound energy loss Download PDFInfo
- Publication number
- CN111236457B CN111236457B CN202010021783.7A CN202010021783A CN111236457B CN 111236457 B CN111236457 B CN 111236457B CN 202010021783 A CN202010021783 A CN 202010021783A CN 111236457 B CN111236457 B CN 111236457B
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- Prior art keywords
- rectangular groove
- sound
- dock
- connecting rod
- pool
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- 230000004888 barrier function Effects 0.000 title claims abstract description 33
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 239000012774 insulation material Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/8227—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only screens ; Arrangements of sound-absorbing elements, e.g. baffles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention provides a sound barrier for reducing acoustic energy loss. Including rectangular groove, protection connecting rod and support, rectangular groove is made by cavity sound insulation steel sheet, and rectangular groove both ends are sealed, and rectangular groove one end welding has the flange of being connected with dock wall flange, and two side symmetries in rectangular groove are fixed with the connection ring, protection connecting rod both ends have the ring, the ring of connecting rod one end is connected with the connection ring in rectangular groove, the ring and the dock wall connection of another end of connecting rod, the support is fixed in and is supported under rectangular groove on the dock wall. The sound barrier device is suitable for reflecting the sound waves from the side surface when the reverberation method is used for measuring the sound power of ships in the dock pool, thereby reducing the sound energy leakage in the dock pool, improving the signal-to-noise ratio in the dock pool, enhancing the sound field diffusivity, and improving the accuracy of the ship radiation sound power measurement in the dock pool.
Description
Technical Field
The invention relates to a sound barrier, in particular to a sound barrier at an entrance and an exit of a dock pool.
Background
The sound barrier is mainly used for sound insulation and noise reduction of highways, expressways, overhead composite roads and other noise sources. The sound insulation and sound absorption combined composite type sound barrier is divided into a pure sound insulation reflection type sound barrier and a sound absorption and sound insulation combined composite type sound barrier. The insertion of a facility between the source and the receiving point, called a sound barrier, which provides a significant additional attenuation of the sound wave propagation and thus reduces the noise contribution in a certain area where the receiver is located.
When the reverberation method is used for measuring the radiation sound power of a large ship and a submarine in a dock pool, sound energy leakage can be caused at an inlet and an outlet of the dock pool, so that the sound energy in the dock pool is reduced, the signal to noise ratio is reduced, and meanwhile, the diffusivity of a sound field in the dock pool is weakened, and the accuracy of the measurement of the radiation sound power of the ship in the dock pool is influenced.
Chinese patent No. CN208501535U discloses a sound barrier, which comprises at least two upright posts, a sound insulation body installed between two adjacent upright posts, and angle steel for fixing the sound insulation body and the upright posts, wherein the aluminum profile is light in weight, so that the production and transportation are facilitated, the weight of the sound barrier is reduced, and the installation efficiency is improved; chinese patent publication No. CN208545684U discloses a sound barrier, which provides a sound barrier that improves sound insulation effect by reflecting sound waves for multiple times, so as to solve the problem of poor sound insulation effect of the conventional sound barrier; the invention discloses a special sound insulation barrier for a railway, which comprises a sound insulation component, a connecting component and an energy storage device, and mainly aims to solve the technical problem that the sound insulation barrier in the prior art is single in function.
The sound barrier device carries out various optimization on the sound barrier equipment, but the sound barrier device is a sound insulation device only suitable for air, and cannot meet the sound insulation requirement of an underwater environment, particularly a dock pool.
Disclosure of Invention
The invention aims to provide a sound barrier which can improve the accuracy of the measurement of the radiation sound power of ships in a dock pool and reduce the sound energy loss.
The purpose of the invention is realized as follows:
including rectangular groove, protection connecting rod and support, rectangular groove is made by cavity sound insulation steel sheet, and rectangular groove both ends are sealed, and rectangular groove one end welding has the flange of being connected with dock wall flange, and two side symmetries in rectangular groove are fixed with the connection ring, protection connecting rod both ends have the ring, the ring of connecting rod one end is connected with the connection ring in rectangular groove, the ring and the dock wall connection of another end of connecting rod, the support is fixed in and is supported under rectangular groove on the dock wall.
The present invention may further comprise:
1. the protective connecting rod is a hollow steel pipe.
2. Two sets of rectangular grooves are simultaneously distributed at the inlet and the outlet of the dock, and two sets of rectangular grooves are symmetrically distributed.
3. The width of the rectangular groove is equal to the width of an entrance and an exit of the dock, the bottom surface is a plane, and the length of the rectangular groove is 1/8 ship dock lengths.
4. The hollow part of the rectangular groove is internally provided with a rib and added with sound insulation materials.
The sound barrier device is made of the hollow sound insulation steel plate, the dock entrance and the dock exit which are originally opened are wrapped, and the hollow sound insulation steel pipe is high in reflection coefficient, so that most of sound waves which enter the dock entrance and the dock exit can be reflected, the sound energy leakage in the dock pool is reduced, the signal-to-noise ratio in the dock pool is improved, the sound field diffusivity is enhanced, and the accuracy of the ship radiation sound power measurement is improved.
Drawings
Fig. 1 is a block diagram of an acoustic barrier apparatus that reduces acoustic energy loss in a water pool of a dock.
FIGS. 2 a-2 b are assembled views of a rectangular groove flange and a connecting ring.
Fig. 3 is a schematic view of a protective link structure.
Detailed Description
The invention is described in more detail below by way of example with reference to the accompanying drawings.
The utility model provides a can reduce sound barrier device of sound energy loss in dock pond includes rectangular groove 1, protection connecting rod 2 and support 3, rectangular groove 1 is made by cavity sound insulation steel sheet, and rectangular groove 1 both ends are sealed, and wherein one end welded flange 4, flange 4 are used for with dock wall flange joint, two side symmetry welding rings 7 in rectangular groove 1 for be connected with protection connecting rod 2, protection connecting rod 2 is hollow steel pipe, can use different quantity protection connecting rod 2 interconnect according to length, and the protection connecting rod 2 both ends all welds the ring, is used for the connection between wall, rectangular groove 1 and the protection connecting rod 2, support 3 is fixed in on the wall, arranges under rectangular groove 1 for support rectangular groove 1, above the device is laid simultaneously with entry and exit, and two sets of equipment symmetry are laid.
The rectangular groove is slightly wider than an entrance and an exit of a dock and ensures enough strength, the bottom surface is a plane and is 1/8 long in the dock, a certain interval is arranged between an upper plate and a lower plate of the hollow part, ribs are arranged in the rectangular groove, sound insulation materials are added to the rectangular groove and are used for supporting the upper plate and the lower plate, the front end and the rear end of the rectangular groove are welded and sealed by steel plates, and a flange is welded at one end of the rectangular groove.
The flange is rectangular, the shape of the inner ring of the flange is consistent with that of the cross section of the rectangular groove, the width of the outer side of the flange is 1.2 times of the maximum distance between two side edges of the rectangular groove, and the thickness of the flange is 3 cm.
The side edge and the lower edge of the rectangular flange plate are provided with through threaded openings which are distributed at equal intervals.
The wall surface flange has the same specification with the flange and is fixed at the entrance and the exit of the dock.
And aligning the flange of the rectangular groove with a wall surface flange screw hole, connecting by using a stud, and laying a stainless steel gasket and a stainless steel elastic cushion.
The support is the rack steel structure, and the support base is arranged with rectangular groove below, support and rectangular groove bottom surface direct contact for support rectangular groove.
The protection connecting rod is a thin cylindrical tube, the length of the protection connecting rod is 1m, the outer diameter of the protection connecting rod is 3cm, the inner diameter of the protection connecting rod is 1.5cm, the protection connecting rod is hollow, steel rings are welded at the head parts of two sides of the protection connecting rod, and the protection connecting rod can be connected with each other.
And 3 circular rings are respectively welded on two side edges of the rectangular groove and are uniformly distributed.
A row of circular rings are vertically fixed on the wall surfaces of the water pools at the two sides of the dock entrance and exit at equal intervals and are used for being connected with the protection connecting rod.
One end of each protection connecting rod is connected with the hooks on the two sides of the rectangular groove, the other end of each protection connecting rod is connected with a proper number of connecting rods, and the last connecting rod can be connected with a certain wall ring, so that the connecting rings can be selected according to the length requirements of the protection connecting rods, and the protection device is formed.
The device is simultaneously arranged at the near-exit of the dock, and the two sets of equipment are symmetrically arranged.
The invention provides a sound barrier for reducing sound energy loss, which can greatly reduce sound energy leakage at an entrance and an exit of a dock when the ship radiation sound power is measured in the dock pool by using a reverberation method, and can reflect most of sound waves incident to the entrance and the exit by using the strong sound insulation and reflection capacity of the sound barrier so as to reduce the sound energy leakage in the dock pool, improve the signal-to-noise ratio in the dock pool, enhance the sound field diffusivity and improve the accuracy of the ship radiation sound power measurement in the dock pool.
Claims (5)
1. A sound barrier for reducing acoustic energy loss, comprising: the rectangular groove is made of hollow sound insulation steel plates, two ends of the rectangular groove are sealed, a flange connected with a dock wall flange is welded at one end of the rectangular groove, connecting circular rings are symmetrically fixed on two side edges of the rectangular groove, two ends of the protecting connecting rod are provided with the circular rings, the circular ring at one end of the connecting rod is connected with the connecting circular ring of the rectangular groove, the circular ring at the other end of the connecting rod is connected with the dock wall, and the support is fixed on the dock wall and supported below the rectangular groove; two sets of rectangular grooves are simultaneously distributed at the inlet and the outlet of the dock, and two sets of rectangular grooves are symmetrically distributed.
2. The sound barrier of claim 1, wherein said acoustic energy loss is reduced by: the protective connecting rod is a hollow steel pipe.
3. A sound barrier according to claim 1 or 2, wherein: the width of the rectangular groove is larger than that of an entrance and an exit of the dock, the bottom surface is a plane, and the length of the rectangular groove is 1/8 ship and dock.
4. A sound barrier according to claim 1 or 2, wherein: the hollow part of the rectangular groove is internally provided with a rib and added with sound insulation materials.
5. A sound barrier according to claim 3, wherein said acoustic barrier is further characterized by: the hollow part of the rectangular groove is internally provided with a rib and added with sound insulation materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010021783.7A CN111236457B (en) | 2020-01-09 | 2020-01-09 | Sound barrier for reducing sound energy loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010021783.7A CN111236457B (en) | 2020-01-09 | 2020-01-09 | Sound barrier for reducing sound energy loss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111236457A CN111236457A (en) | 2020-06-05 |
| CN111236457B true CN111236457B (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010021783.7A Active CN111236457B (en) | 2020-01-09 | 2020-01-09 | Sound barrier for reducing sound energy loss |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04364434A (en) * | 1991-06-11 | 1992-12-16 | Kyoto Koudo Gijutsu Kenkyusho | Perfect sound insulating plate for low-frequency noise |
| US7178630B1 (en) * | 2004-08-30 | 2007-02-20 | Jay Perdue | Acoustic device for wall mounting for diffusion and absorption of sound |
| KR20130109621A (en) * | 2012-03-28 | 2013-10-08 | 삼성중공업 주식회사 | Apparatus for noise control in a cabin |
| CN104538022A (en) * | 2014-12-25 | 2015-04-22 | 哈尔滨工程大学 | Acoustic shield based on acoustic wave band gap features of generalized photonic crystal semi-cylinder shells |
| CN105698923A (en) * | 2016-03-09 | 2016-06-22 | 哈尔滨工程大学 | Method for calculating radiation noise generated by pipe wall of water-filling pipeline during reverberation method |
| CN105973979A (en) * | 2016-04-26 | 2016-09-28 | 哈尔滨工程大学 | Device for measuring sound absorption and sound insulation coefficients of underwater acoustic material based on reverberation method |
-
2020
- 2020-01-09 CN CN202010021783.7A patent/CN111236457B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04364434A (en) * | 1991-06-11 | 1992-12-16 | Kyoto Koudo Gijutsu Kenkyusho | Perfect sound insulating plate for low-frequency noise |
| US7178630B1 (en) * | 2004-08-30 | 2007-02-20 | Jay Perdue | Acoustic device for wall mounting for diffusion and absorption of sound |
| KR20130109621A (en) * | 2012-03-28 | 2013-10-08 | 삼성중공업 주식회사 | Apparatus for noise control in a cabin |
| CN104538022A (en) * | 2014-12-25 | 2015-04-22 | 哈尔滨工程大学 | Acoustic shield based on acoustic wave band gap features of generalized photonic crystal semi-cylinder shells |
| CN105698923A (en) * | 2016-03-09 | 2016-06-22 | 哈尔滨工程大学 | Method for calculating radiation noise generated by pipe wall of water-filling pipeline during reverberation method |
| CN105973979A (en) * | 2016-04-26 | 2016-09-28 | 哈尔滨工程大学 | Device for measuring sound absorption and sound insulation coefficients of underwater acoustic material based on reverberation method |
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| Publication number | Publication date |
|---|---|
| CN111236457A (en) | 2020-06-05 |
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