CN113007483B - Water source device of acoustic test water pipeline - Google Patents
Water source device of acoustic test water pipeline Download PDFInfo
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- CN113007483B CN113007483B CN202110170314.6A CN202110170314A CN113007483B CN 113007483 B CN113007483 B CN 113007483B CN 202110170314 A CN202110170314 A CN 202110170314A CN 113007483 B CN113007483 B CN 113007483B
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- water
- fixedly connected
- water source
- sound absorption
- water pipeline
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/0336—Noise absorbers by means of sound-absorbing materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a water source device of a water pipeline in an acoustic test, which mainly comprises a cylinder body, an upper end enclosure, a lower end enclosure, a sound absorption layer, a manhole cover, a rope ladder, support legs and lifting lugs, wherein the upper end enclosure is arranged on the cylinder body; the cylinder is cylindrical, the upper end socket and the lower end socket are elliptical, the water pipeline interface is used for being connected with a water pipeline, the cable interface is used for providing power for the pressurizing device, the volume is not less than 1/4 of the rated flow of the water pump so as to meet the requirement of stable water flow in the water pipeline, the inner wall of the device is laid with a low-frequency sound absorption material so as to control the blade frequency and the shaft frequency of the water pump, and the height H and the diameter D of the cylinder part of the device are well designed so as to eliminate the blade frequency and the shaft frequency of the water pump. The water source device of the acoustic test water pipeline provided by the invention can be matched with a test water pipeline system, effectively reduces the interference in the test water pipeline, improves the accuracy of test results, and effectively supports test researches such as test examination, prototype identification, improvement and the like of ship sea pipeline control measures.
Description
Technical Field
The invention relates to the technical field of ship vibration reduction and noise reduction, in particular to a water source device of a water pipeline in an acoustic test.
Background
Modern ships focus particularly on the concealment of the ship. The sea pipeline system is an important component of the ship, and during the operation process of the sea pipeline system, the generated water noise radiates outwards along with the pipeline, so that the concealment of the ship can be reduced. The generated water noise is mainly the water pump noise, so that how to design a low-noise sea dredging pipeline system is very important. The device at the present stage is only used as a water source device of the sea dredging pipeline system, and can not provide help for the low-noise design of the sea dredging pipeline system.
Disclosure of Invention
The invention aims to provide a water source device of an acoustic test water pipeline, which is used for solving the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a water source device of an acoustic test water pipeline, which comprises a cylinder, wherein an upper end enclosure and a lower end enclosure are fixedly connected to two ends of the cylinder respectively, the upper end enclosure is positioned above the lower end enclosure, the cylinder is cylindrical, the curved surfaces of the upper end enclosure and the lower end enclosure are both elliptical, the cylinder, the upper end enclosure and the lower end enclosure form a water storage cavity together, and a sound absorption layer is laid on the cavity wall of the water storage cavity; a manhole is formed in the top of the upper end enclosure, a manhole cover is hinged to the top of the manhole, a hook is fixedly connected to the bottom of the manhole, a rope ladder is arranged in the barrel, and the top of the rope ladder is fixedly connected with the hook; the bottom of the cylinder body is fixedly connected with a plurality of water pipeline interfaces, the vertical distance between the center of each water pipeline interface and the lower end enclosure is not less than 1.5 times of the diameter of each water pipeline interface, and the distance between every two adjacent water pipeline interfaces is not less than the sum of the diameters of the two adjacent water pipeline interfaces; the height H and the diameter D of the cylinder body are respectively as follows:
H＝350(2n+1)/f-h，n＝0,1,2,3…
h is the minor axis of the elliptic section of the upper end enclosure (1); f, water pump blade frequency or shaft frequency; Δ L is transmission loss; Δ LmaxAn optimal value of the transmission loss Δ L; d is the diameter of the water line connection (14).
Preferably, the low-frequency effective sound absorption coefficient of the sound absorption layer is not less than 0.8.
Preferably, the sound absorption layer includes sound insulation base plate, sound absorption skin and cladding by interior to exterior in proper order, the sound insulation base plate is fixed on the water storage intracavity wall, the sound absorption skin is inclosed hollow structure, fixedly connected with rubber bed course in the outer cavity of sound absorption, be equipped with cellular sound absorption hole on the rubber bed course, sound absorption hole intussuseption is filled with and inhales the sound cotton.
Preferably, the cladding is made of low-frequency sound-absorbing acoustic material.
Preferably, the side wall of the cylinder body is fixedly provided with a pressurizing interface, the top end of the cylinder body is fixedly connected with lifting lugs, the lifting lugs are symmetrically arranged along the circumferential direction of the cylinder body, and the hanging capacity of the lifting lugs is not less than 1.5 times of the net weight of the water source device; the barrel is characterized in that the inner wall of the barrel is fixedly connected with a plurality of mounting bases, the barrel is provided with an observation window, and high-strength organic glass is selected as a sight glass material of the observation window.
Preferably, the upper end enclosure is provided with a cable interface and an observation window, and the sight glass of the observation window is made of high-strength organic glass; and the inner wall of the upper end enclosure is fixedly connected with a mounting base.
Preferably, the inner wall of the bottom end of the lower end socket is fixedly connected with a mounting base, and the bottom of the lower end socket is provided with a drain valve.
Preferably, the diameter of the manhole is not more than 1/3 of the diameter of the cylinder, a lifting lug of the manhole cover is fixedly connected to the top end of the manhole cover, and an exhaust valve is installed on the manhole cover.
Preferably, a plurality of supporting legs are fixedly connected to the bottom of the lower end enclosure, the supporting legs are arranged along the circumferential direction of the cylinder at equal intervals, the number of the supporting legs is not less than three, the supporting capacity of each supporting leg is not less than 1.5/k times of the weight of the water source device under the condition of full water filling, and k is the number of the supporting angles.
Preferably, the capacity of the water source device of the test water pipeline is not less than 1/4 of the rated flow of the water pump in the test water pipeline.
The invention discloses the following technical effects: the water source device of the acoustic test water pipeline provided by the invention can be matched with a test water pipeline system, effectively reduces the interference in the test water pipeline, improves the accuracy of test results, and effectively supports test researches such as test examination, prototype identification, improvement and the like of ship sea pipeline control measures.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic diagram of a water source device of an acoustic test water pipeline according to the present invention;
FIG. 2 is a schematic structural view of an acoustical layer;
wherein, the upper end enclosure-1; a cylinder body-2; a lower end enclosure-3; a sound-absorbing layer-4; sound insulation base plate-4.1; sound-absorbing outer layer-4.2; coating-4.3; 4.4 parts of a rubber cushion layer; sound-absorbing cotton-4.5; a manhole cover-5; a manhole-6; a lifting lug-7; a rope ladder-8; a leg-9; an observation window-10; a cable interface-11; a hook-12; a mounting base-13; water line interface-14; a pressure port-15; a blow-down valve-16; an exhaust valve-17; manhole cover lifting lugs-18.
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. 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.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a water source device of a water pipeline in an acoustic test, which comprises a cylinder body 2, wherein the two ends of the cylinder body 2 are respectively and fixedly connected with an upper end enclosure 1 and a lower end enclosure 3, the upper end enclosure 1 is positioned above the lower end enclosure 3, the cylinder body 2 is cylindrical, the curved surfaces of the upper end enclosure 1 and the lower end enclosure 3 are both elliptical, the cylinder body 2, the upper end enclosure 1 and the lower end enclosure 3 form a water storage cavity together, and a sound absorption layer 4 is laid on the cavity wall of the water storage cavity; a manhole 6 is arranged at the top of the upper end socket 1, a manhole cover 5 is hinged to the top of the manhole 6, a hook 12 is fixedly connected to the bottom of the manhole 6, a rope ladder 8 is arranged in the cylinder 2, and the top of the rope ladder 8 is fixedly connected with the hook 12; a water pipe joint 14 is fixedly connected to the bottom of the cylinder 2, the vertical distance between the center of the water pipe joint 14 and the lower end enclosure 3 is not less than 1.5 times the diameter of the water pipe joint 14, fig. 1 shows that two water pipe joints 14 with different diameters can provide water flow for two sets of water pipes with different diameters, the two water pipe joints 14 with different diameters are correspondingly arranged, and when the number of the water pipe joints 14 with different diameters is multiple, the distance between two adjacent water pipe joints 14 of the same kind is not less than the sum of the diameters of the two adjacent water pipe joints 14; the height H of the cylinder body 2 and the diameter D of the cylinder body 2 are respectively as follows:
H＝350(2n+1)/f-h，n＝0,1,2,3…
h, the short axis of the elliptic section of the upper end enclosure; f, water pump blade frequency or shaft frequency; Δ L is transmission loss; Δ LmaxAn optimal value of the transmission loss Δ L; d is the diameter of the water line interface 14; n is constant and can be selected according to the actual requirement height of the cylinder 2.
Further, for the blade frequency, the shaft frequency and the broadband flow noise of better control water pump, the effective acoustic absorption coefficient of low frequency of acoustic absorbent 4 is not less than 0.8, acoustic absorbent 4 includes sound insulation base plate 4.1, sound absorption outer layer 4.2 and cladding 4.3 from inside to outside in proper order, sound insulation base plate 4.1 is fixed on the water storage intracavity wall, sound absorption outer layer 4.2 is inclosed hollow structure, fixedly connected with rubber cushion 4.4 in the cavity of sound absorption outer layer 4.2, be equipped with cellular sound absorption hole on the rubber cushion 4.4, sound absorption hole intussuseption is filled with and is inhaled sound cotton 4.5, cladding 4.3 adopts low frequency acoustic material, and low frequency acoustic material can be multi-functional gradient material or phononic crystal material, utilizes the noise that acoustic absorbent 4 can effectual reduction water pump produce, and then reduces the noise of water pipeline water source device.
Further, a pressurizing connector 15 is fixedly installed on the side wall of the cylinder body 2, so that the water source device can move integrally, lifting lugs 7 are fixedly connected to the top end of the cylinder body 2, the lifting lugs 7 are symmetrically arranged along the circumferential direction of the cylinder body 2, and the hanging capacity of the lifting lugs 7 is not less than 1.5 times of the net weight of the water source device; a plurality of mounting bases 13 are fixedly connected to the inner wall of the cylinder 2, the inner wall of the upper end enclosure 1 and the inner wall of the bottom end of the lower end enclosure 3, the mounting bases 13 are used for mounting experimental equipment, in order to facilitate observation of the internal condition of the water source device, observation windows 10 are respectively mounted on the cylinder 2 and the upper end enclosure 1, and the sight glass material of the observation windows 10 is high-strength organic glass; the cable connector 11 is arranged on the upper sealing head 1, and the blow-down valve 16 is arranged at the bottom of the lower sealing head 3.
Further, the diameter of the manhole 6 is not more than 1/3 of the diameter of the cylinder 2, a manhole cover lifting lug 18 is fixedly connected to the top end of the manhole cover 5, and an exhaust valve 17 is installed on the manhole cover 5.
Further, 3 bottom fixedly connected with a plurality of stabilizer blade 9 of low head, stabilizer blade 9 is followed 2 circumference equidistant arrangements of barrel, the quantity of stabilizer blade 9 is no less than three, single the holding power of stabilizer blade 9 is not less than 1.5 k times of water source device weight under the full water condition, and k is the journal angle quantity.
Furthermore, in order to ensure the safe operation of the water pump, the capacity of the water source device of the test water pipeline is not less than 1/4 of the rated flow of the water pump in the test water pipeline, so as to meet the requirement of stable water flow in the water pipeline.
According to the water source device for the acoustic test water pipeline, the barrel 2 is provided with the specified height and diameter, the sound absorption material, the water pipeline interface 14 and the structural design of the pipeline, so that the water source device has a sound absorption function, the blade frequency and the shaft frequency of a water pump are eliminated through the plane wave theoretical design, the operation function and the efficiency of the device are greatly improved, and the material is saved. The muffler has great positive effects on pipeline muffling and equipment muffling.
The invention can provide stable water flow under different pressures for a land test water pipeline system and simulate different water depth environments of ships. And through structural design and laying the blade frequency, the shaft frequency and the broadband of the low-frequency pressure-resistant sound absorption material in the water pump effectively controlled, the interference in the test water pipeline is reduced. In addition, the device can also be applied to the tests of structural strength, fatigue resistance and the like of the test piece.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (10)
1. The water source device of the acoustic test water pipeline is characterized by comprising a cylinder body (2), wherein an upper seal head (1) and a lower seal head (3) are fixedly connected to two ends of the cylinder body (2) respectively, the upper seal head (1) is positioned above the lower seal head (3), the cylinder body (2) is cylindrical, the curved surfaces of the upper seal head (1) and the lower seal head (3) are both elliptical, the cylinder body (2), the upper seal head (1) and the lower seal head (3) form a water storage cavity together, and a sound absorption layer (4) is laid on the cavity wall of the water storage cavity; a manhole (6) is formed in the top of the upper end enclosure (1), a manhole cover (5) is hinged to the top of the manhole (6), a hook (12) is fixedly connected to the bottom of the manhole (6), a rope ladder (8) is arranged in the barrel (2), and the top of the rope ladder (8) is fixedly connected with the hook (12); the bottom of the cylinder body (2) is fixedly connected with a plurality of water pipeline interfaces (14), the vertical distance between the center of each water pipeline interface (14) and the lower end enclosure (3) is not less than 1.5 times of the diameter of each water pipeline interface (14), and the distance between every two adjacent water pipeline interfaces (14) is not less than the sum of the diameters of every two adjacent water pipeline interfaces (14); barrel (2) height H and barrel (2) diameter D do respectively:
H＝350(2n+1)/f-h，n＝0,1,2,3……
h is the length of the short axis of the elliptic section of the upper end enclosure (1); f, any frequency of water pump blade frequency or shaft frequency; n is a natural number; when the height H of the cylinder (2) is calculated, f representing the blade frequency or the shaft frequency of the water pump is only a numerical value, the specific dimension of f is not considered, and the dimension of a calculation result is mm; delta L is the noise energy transfer loss between the water inlet of the cylinder (2) and the water outlet of the cylinder (2); Δ LmaxAn optimal value of noise energy transfer loss Δ L; d is the diameter of the water pipe joint (14); m is the number of water line interfaces (14).
2. The acoustic test water line water source apparatus of claim 1, wherein: the low-frequency effective sound absorption coefficient of the sound absorption layer (4) is not less than 0.8.
3. The acoustic test water line water source apparatus of claim 1, wherein: the sound absorption layer (4) is by interior to exterior including sound insulation base plate (4.1), sound absorption outer layer (4.2) and cladding (4.3) in proper order, sound insulation base plate (4.1) are fixed on the water storage intracavity wall, sound absorption outer layer (4.2) are inclosed hollow structure, fixedly connected with rubber pad layer (4.4) in the cavity of sound absorption outer layer (4.2), be equipped with cellular sound absorption hole on rubber pad layer (4.4), sound absorption hole intussuseption is filled with and inhales sound cotton (4.5).
4. The acoustic test water line water source apparatus of claim 3, wherein: the cladding (4.3) is made of low-frequency sound-absorbing acoustic materials.
5. The acoustic test water line water source apparatus of claim 1, wherein: the side wall of the barrel body (2) is fixedly provided with a pressurizing connector (15), the top end of the barrel body (2) is fixedly connected with lifting lugs (7), the lifting lugs (7) are circumferentially and symmetrically arranged along the barrel body (2), and the hanging capacity of the lifting lugs (7) is not less than 1.5 times of the net weight of a water source device; fixedly connected with a plurality of mounting base (13) on barrel (2) inner wall, install observation window (10) on barrel (2), the sight glass material of observation window (10) chooses for use high strength organic glass.
6. The acoustic test water line water source apparatus of claim 1, wherein: the cable connector (11) and the observation window (10) are arranged on the upper end enclosure (1), and the sight glass material of the observation window (10) is high-strength organic glass; and the inner wall of the upper end enclosure (1) is fixedly connected with a mounting base (13).
7. The acoustic test water line water source apparatus of claim 1, wherein: fixedly connected with mounting base (13) on lower head (3) bottom inner wall, blowoff valve (16) are installed to lower head (3) bottom.
8. The acoustic test water line water source apparatus of claim 6, wherein: the diameter of the manhole (6) is not more than 1/3 of the diameter of the barrel body (2), a manhole cover lifting lug (18) is fixedly connected to the top end of the manhole cover (5), and an exhaust valve (17) is installed on the manhole cover (5).
9. The acoustic test water line water source apparatus of claim 1, wherein: the bottom of the lower end enclosure (3) is fixedly connected with a plurality of support legs (9), the support legs (9) are arranged in the circumferential direction of the barrel body (2) at equal intervals, the number of the support legs (9) is not less than three, the support capacity of the support legs (9) is not less than 1.5/k times of the weight of the water source device under the condition of full water, and k is the number of the supporting angles.
10. The acoustic test water line water source apparatus of claim 1, wherein: the capacity of the water source device of the test water pipeline is not less than 1/4 of the rated flow of the water pump in the test water pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110170314.6A CN113007483B (en) | 2021-02-08 | 2021-02-08 | Water source device of acoustic test water pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110170314.6A CN113007483B (en) | 2021-02-08 | 2021-02-08 | Water source device of acoustic test water pipeline |
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| CN113007483A CN113007483A (en) | 2021-06-22 |
| CN113007483B true CN113007483B (en) | 2021-11-26 |
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| CN115436183B (en) * | 2022-11-09 | 2023-03-24 | 华中农业大学 | Deformation detection system and method for cavity rubber material under simulated deepwater high-pressure environment |
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| CN2037647U (en) * | 1988-03-05 | 1989-05-17 | 水利电力部华东电力设计院 | Combined noise-eliminating and cinder-removing device for tube punching |
| CN103363650A (en) * | 2012-04-03 | 2013-10-23 | 哈金森公司 | Duct for air-conditioning circuit incorporating a noise-reducing device, and such a circuit incorporating it |
| CN106195642A (en) * | 2016-08-30 | 2016-12-07 | 天津海辰华环保科技股份有限公司 | Ventilation type pipeline mud pressurizer |
| CN207958747U (en) * | 2018-03-06 | 2018-10-12 | 常州捷希新材料科技有限公司 | A kind of Acoustic web dyeing yarn temperature control equipment |
| CN110006816A (en) * | 2019-05-21 | 2019-07-12 | 烟台宏远氧业股份有限公司 | A kind of deep sea environment simulation device |
-
2021
- 2021-02-08 CN CN202110170314.6A patent/CN113007483B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2037647U (en) * | 1988-03-05 | 1989-05-17 | 水利电力部华东电力设计院 | Combined noise-eliminating and cinder-removing device for tube punching |
| CN103363650A (en) * | 2012-04-03 | 2013-10-23 | 哈金森公司 | Duct for air-conditioning circuit incorporating a noise-reducing device, and such a circuit incorporating it |
| CN106195642A (en) * | 2016-08-30 | 2016-12-07 | 天津海辰华环保科技股份有限公司 | Ventilation type pipeline mud pressurizer |
| CN207958747U (en) * | 2018-03-06 | 2018-10-12 | 常州捷希新材料科技有限公司 | A kind of Acoustic web dyeing yarn temperature control equipment |
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