阅读说明：本技术 阵列截断圆锥壳气泡幕水下打桩降噪装置 (Conical Shells With air curtain underwater pile driving denoising device is truncated in array ) 是由 王献忠 姜权洲 吴卫国 于 2019-08-21 设计创作，主要内容包括：本发明属于海洋工程振动与噪声领域,提供一种阵列截断圆锥壳气泡幕水下打桩降噪装置,包括截断圆锥壳,含气孔的内、外环管,内、外竖管,外部空气压缩机,所述截断圆锥壳与内、外环管通过弯钩挂靠,所述内、外环管与内、外竖管间通过带螺纹的四通管进行固定连接,所述外部空气压缩机位于整体结构的顶部,通过软管与内、外竖管的最上端连接。本发明装置在低频段内通过圆锥壳斜向引导声波传播,有效对波长较长的声波进行定向辐射,利用海面波浪的不规则性,并增加声波传播路径,向远海海面传递和消耗声能量；在中高频段内通过圆锥壳内外沿环管气孔产生的双层气泡幕,进行共振吸收和漫散射,有效减少噪声污染。(The invention belongs to ocean engineering vibration and noise fields, a kind of array truncation Conical Shells With air curtain underwater pile driving denoising device is provided, including Conical Shells With is truncated, inside and outside endless tube containing stomata, inside and outside vertical tube, outside air compressor, the truncation Conical Shells With is affiliated to inside and outside endless tube by crotch, it is fixedly connected between the inside and outside endless tube and inside and outside vertical tube by threaded four-way pipe, the outside air compressor is located at integrally-built top, is connect by hose with the top of inside and outside vertical tube.Apparatus of the present invention are propagated in low-frequency range by the oblique direct sound waves of Conical Shells With, are effectively oriented radiation to longer wavelengths of sound wave, using the scrambling of wave of the sea, and are increased acoustic wave propagation path, the transmitting of the sea Xiang Yuanhai and sound energy consumption amount；The double-deck air curtain generated in medium-high frequency section by outer endless tube stomata in Conical Shells With carries out RESONANCE ABSORPTION and diffusing scattering, effectively reduces noise pollution.)

1. Conical Shells With air curtain underwater pile driving denoising device is truncated in array, it is characterised in that: including Conical Shells With is truncated, containing stomata Inside and outside endless tube, inside and outside vertical tube, outside air compressor, the truncation Conical Shells With is affiliated to inside and outside endless tube by crotch, described It is fixedly connected between inside and outside endless tube and inside and outside vertical tube by threaded four-way pipe, the outside air compressor is located at whole The top of body structure is connect by hose with the top of inside and outside vertical tube.

2. Conical Shells With air curtain underwater pile driving denoising device is truncated in array according to claim 1, it is characterised in that: described Truncation Conical Shells With is made of the steel plate rolling splicing of four 1/4 circles, and cone-apex angle is 45 °, and bottom radius is pile foundation radius 1.2-1.5 Times, it is highly 0.5m.

3. Conical Shells With air curtain underwater pile driving denoising device is truncated in array according to claim 1, it is characterised in that: described Inner and outer rings pipe diameter is 40mm, and stomata is circumferentially uniformly distributed along inside and outside endless tube, single hole diameter 2.5mm.

4. Conical Shells With air curtain underwater pile driving denoising device is truncated in array according to claim 1, it is characterised in that: described It is cut into the notch for installing four-way in truncation Conical Shells With, and is respectively welded on upper and lower edge for being affiliated to the curved of inside and outside endless tube Hook.

Technical field

The invention belongs to ocean engineering vibration and noise fields, are related to underwater pile driving full frequency band noise control, and in particular to A kind of array truncation Conical Shells With air curtain underwater pile driving denoising device.

Background technique

With the development and utilization to marine energy, bringing tremendous economic sharp by the ocean engineering of representative of underwater pile driving While beneficial, environmental problem is also resulted in.Underwater pile driving can give off the high-intensitive wide band pulse signal of transient state, master Radiating approach is that sound wave generates from pile body and passes through aqueous medium and is transferred to sound reception point.It is attached that underwater pile driving noise can shelter construction The acoustic signal of nearly even marine mammal, fish of off-lying sea etc. biology, causes its acoustic trauma (TTS or PTS), influences it The behaviors such as social, breeding, the welding ecological balance.In order to reduce environment sound pollution, protection marine organisms are especially in imminent danger dynamic Object, urgent need solve the problems, such as underwater pile driving noise reduction.

Previous underwater pile driving noise reduction technology scheme, one kind is the heavy type structure with steel drum cofferdam etc. for matrix, in steel The devices such as attachment noise elimination wedge are belonged to noise and are passively controlled using conventional sound reduction method on the inside of wall, are imitated with certain noise reduction Fruit, but construction weight is big, processes more difficult, higher cost；Another kind of is using the hollow elasticity sphere of meshy arrangement as the light of matrix Radiated noise is isolated using the hollow sphere of array in type structure, but the rigidity of structure is small, and whole positioning can be by the shadow flowed in ocean It rings, it is difficult to accurate control, the case where especially multilayer is laid, and the special a large amount of hollow sphere of processing is needed, device is not easy Laying, recycling for entirety is carried out, durability is also still to be tested.

Therefore, that there is an urgent need to a kind of forms is simple and durable, overall weight rigidity is moderate, noise reduction clear physics conception, totality Low-cost underwater pile driving denoising device.

Summary of the invention

The present invention is directed to noise problem and the prior art during underwater pile driving, proposes a kind of array truncation Conical Shells With gas Curtain underwater pile driving denoising device is steeped, is propagated in low-frequency range by the oblique direct sound waves of Conical Shells With, effectively to longer wavelengths of sound Wave is oriented radiation, using the scrambling of wave of the sea, and increases acoustic wave propagation path, the transmitting of the sea Xiang Yuanhai and consumption Acoustic energy；The double-deck air curtain generated in medium-high frequency section by outer endless tube stomata in Conical Shells With carries out RESONANCE ABSORPTION and overflows Scattering, effectively reduces noise pollution.

To achieve the above object, the present invention adopts the following technical scheme: array truncation Conical Shells With air curtain underwater pile driving drop It makes an uproar device, including truncation Conical Shells With, the inside and outside endless tube containing stomata, inside and outside vertical tube, outside air compressor, the truncation circular cone Shell is affiliated to inside and outside endless tube by crotch, is consolidated between the inside and outside endless tube and inside and outside vertical tube by threaded four-way pipe Fixed connection, the outside air compressor are located at integrally-built top, are connect by hose with the top of inside and outside vertical tube.

In the above-mentioned technical solutions, the truncation Conical Shells With is made of the steel plate rolling splicing of four 1/4 circles, and cone-apex angle is 45 °, it is highly 0.5m that bottom radius, which is 1.2-1.5 times of pile foundation radius,.

In the above-mentioned technical solutions, the notch for installing four-way is cut into the truncation Conical Shells With, and on upper and lower edge The crotch for being affiliated to inside and outside endless tube is respectively welded.

In the above-mentioned technical solutions, the inner and outer rings pipe diameter is 40mm, and stomata circumferentially uniformly divides along inside and outside endless tube Cloth, single hole diameter 2.5mm.

It in the above-mentioned technical solutions, can be according to Pile Driving Noise Frequency Design shell-to-shell distance, Air Bubble Size and generation speed etc. Parameter can preferably keep the waveform of more low-frequency sound wave to conduct obliquely when vertical distance increases between shell；Air Bubble Size is by endless tube The size in upper hole determines, when piling generate noise frequency it is higher when, can generate in fabrication stage suitably hole diameter enlargement compared with atmosphere Bubble, is effectively scattered and is obstructed；Bubble generates the rate control that speed is inputted by outside air compressor, and input rate is got over Greatly, the air curtain of formation is finer and close.

Physical concept of the present invention is apparent, while utilizing the methods of guide directional propagation, bubble sound insulation；Simple structure is durable, Using components such as the pipe of the common easy processing of engineering, plates；Can flexible assembling disassembly, connected, avoided by the modes such as being affiliated to, screwing The shortcomings that constructing, recycling is not easy after welding is integral；Conical Shells With truncation design can be carried out by pile foundation size and marine environment, and According to Pile Driving Noise frequency shift shell-to-shell distance, Air Bubble Size and the parameters such as speed are generated, in existing Pile Driving Noise monitoring data On the basis of, the Noise Reduction of variable element can be given full play to.Since array format can preferably keep producing along pile foundation axial direction Raw and conduction from the waveform to radial propagation, and inside and outside circumferential stomata produces two layers of fine and close uniform air curtain sound-screen, is making an uproar The basic, normal, high frequency range of acoustic radiation has good full frequency band acoustic conductance, sound scattering harmony assimilation effect, reduces noise intensity, protects Protect the marine eco-environment.

Detailed description of the invention

Fig. 1 is vertical tube and endless tube connection schematic diagram in the present invention.

Fig. 2 is that Conical Shells With structural schematic diagram is truncated in the present invention.

Fig. 3 is overall structure of the present invention (removing air compressor).

Fig. 4 is the main denoising structure schematic diagram of different noise frequency ingredients.

Wherein: 1. vertical tubes, 2. endless tubes, 3. four-way pipes, 4. stomatas, 5. Conical Shells Withs, 6. prefabricated notches, 7. crotches, 8. Base.

Specific embodiment

In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.

It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to To another element or may there are centering elements with inch.

Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more Any and all combinations of relevant listed item.

As shown in Figure 1, the embodiment of the present invention with the endless tube 2 with stomata and vertical tube 1 for integrally-built supportive body, pass through Four-way pipe 3 is connected and fixed, and transmits gas.

As shown in Fig. 2, 1/4 truncation conical shell can be made through techniques such as cutting, roll bendings by plate in truncation Conical Shells With, it is cut into use Two are respectively welded for being affiliated to the crotch 7 of endless tube in the prefabricated notch 6 of installation four-way, and in upper lower edge, and then are spliced to form One complete truncation circular cone shell unit.

As shown in figure 3, the crotch 7 that outer in Conical Shells With is truncated is affiliated to by the embodiment of the present invention with inside and outside endless tube 2, every A truncation Conical Shells With installs four-way pipe in the prefabricated indentation, there of four direction, and endless tube and vertical tube are tightened fixation, In by screw thread The hose of connection outside air compressor, completes the overall installation of structure at the top of vertical tube.

Conical Shells With air curtain underwater pile driving denoising device is truncated in array of the present invention, is affiliated to by truncation Conical Shells With and endless tube 2 The basic cell structure of array is connected along conical shell axially through eight vertical tubes 1 in four orientation through screw thread four-way pipe 3, is completed overall Installation, installation are transported to construction site, can also be spliced at the construction field (site) after can fulfiling ahead of schedule.When air compressor starts work After work, structure is lifted by crane entirely through the cantilever crane of maritime platform or crane ship, reaches its dive to vertical tube bottom in sea bed Predetermined position.Before piling work carries out, air compressor work has conveyed gas, by sending under four vertical tubes to each ring Pipe, and bubble is generated in the stomata of each endless tube 4, form inside and outside two layers of air curtain.After piling work starts, piling is generated Noise in low frequency radiation noise contribution undergo in the air curtain that generates of endless tube still keep more complete but since wavelength is longer Waveform conducted obliquely along Conical Shells With, by outer endless tube generate air curtain, finally reach sea, using irregular wave into Row scattering, and refraction multiple between sea and seabed, scattering, sound energy consumption amount are formed with longer path.And it drives piles High-frequency noises ingredient in noise generates the processes such as resonance, acoustic impedance mismatch reflection, finally with less in two layers of air curtain The remaining noise of energy is propagated outward.In conclusion full frequency band noise can be greatly reduced during driving piles under water in the present invention The energy propagated to far field, protects marine organisms and environment.

The content being not described in detail in this specification belongs to the prior art well known to those skilled in the art.

Examples detailed above of the invention only examples made by the present invention to clearly illustrate, rather than embodiments of the present invention It limits.For those of ordinary skill in the art, other different forms can also be made on the basis of the above description Variation or variation.Here all embodiments can not be exhaustive.All technical solution of the present inventions that belongs to are amplified Obvious changes or variations out are still in the scope of protection of the present invention.