CN210739700U

CN210739700U - Noise reduction structure and waste heat boiler

Info

Publication number: CN210739700U
Application number: CN201921515153.4U
Authority: CN
Inventors: 邱兆国; 赵迎九; 段喜民; 魏普; 沈建永; 江腾武; 石鑫; 于雅楠
Original assignee: Huadian Heavy Industries Co Ltd
Current assignee: Huadian Heavy Industries Co Ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-06-12
Anticipated expiration: 2029-09-11

Abstract

The utility model relates to a technical field of making an uproar falls, concretely relates to structure and exhaust-heat boiler of making an uproar falls. The noise reduction structure is arranged on a superheater of the waste heat boiler and comprises a noise reduction piece arranged on a fin tube of the superheater, and the noise reduction piece is positioned on the leeward side of the fin tube and is arranged along the wind direction. The air current itself has the noise, and also can produce great noise when the air current passes through the fin pipe for noise in the over heater is great, falls in the over heater and makes an uproar, can the holistic noise condition of effectual reduction exhaust-heat boiler, reaches the purpose that exhaust-heat boiler made an uproar. Moreover, the noise reduction piece is arranged on the fin tube, so that the installation and maintenance are more convenient, the material is saved, the cost is relatively low and the overall performance of the waste heat boiler cannot be influenced for the outer side of the boiler body, the inner side of the boiler body or the outer side of a chimney.

Description

Noise reduction structure and waste heat boiler

Technical Field

The utility model relates to a technical field of making an uproar falls, concretely relates to structure and exhaust-heat boiler of making an uproar falls.

Background

The waste heat boiler is a boiler which heats water to a certain temperature by using waste heat in waste gas, waste material or waste liquid in various industrial processes and heat generated after combustible substances are combusted, and can produce hot water or steam for other sections to use through waste heat recovery. For example, the exhaust-heat boiler secondarily utilizes the exhaust heat generated after the gas power generation, thereby improving the power generation efficiency, and therefore, the exhaust-heat boiler is more and more widely applied to the power generation field. However, the exhaust-heat boiler generates a large amount of noise in the using process, and the work and life of surrounding residents are seriously affected, so that the noise reduction treatment is required to be carried out on the exhaust-heat boiler in order to utilize the exhaust-heat boiler for long time to regenerate power.

At present, for the noise reduction treatment of the waste heat boiler, a boiler tight enclosure is adopted for some times, namely a boiler body is wrapped to block the transmission of noise, but the purpose of effective noise reduction cannot be achieved by adopting the mode, and meanwhile, the boiler tight enclosure is high in cost and not beneficial to the heat dissipation of a boiler body, so that the performance of the boiler is greatly influenced; the daily maintenance and repair of the boiler also brings about much inconvenience. Still install the noise reduction device in the outside of chimney, this can make the great and serious influence emission performance of chimney of bearing capacity of chimney, and holistic noise reduction effect is general, and the structure is fixed, and the suitability is poor, and the range of application is limited. Still be in exhaust-heat boiler's inside setting up sound absorbing device, this kind of mode has with high costs equally, is unfavorable for the heat dissipation of boiler furnace body, inconvenient daily maintenance and maintenance.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the waste heat boiler among the prior art and falling the defect that the structure is complicated, with high costs, inconvenient maintenance to a simple structure, with low costs, convenient maintenance and do not influence waste heat boiler overall performance and fall the structure and waste heat boiler of making an uproar is provided.

In order to solve the problem, the utility model discloses a structure of making an uproar falls locates waste heat boiler's over heater on, it falls the piece of making an uproar including locating on over heater's the fin pipe, it is located to fall the piece of making an uproar the leeward side of fin pipe, and set up along the wind direction.

One of the finned tubes is correspondingly provided with one of the noise reduction pieces.

The length of the noise reduction piece along the wind direction is 1.5-3 times of the diameter of the finned tube.

The thickness of the noise reduction piece is 0.1-0.2 of the diameter of the finned tube.

The noise reduction pieces are arranged along with the finned tubes in a staggered state.

The distance from the tail end of the noise reduction piece along the wind direction to the next row of fin tubes is 1-2 times of the diameter of the fin tubes.

The noise reduction piece is welded on the finned tube.

The noise reduction piece is a steel plate.

The utility model discloses a waste heat boiler, including the over heater, be equipped with foretell structure of making an uproar that falls on fin pipe in the over heater

The utility model discloses technical scheme has following advantage:

1. the utility model discloses an on the over heater of exhaust-heat boiler was located to the structure of making an uproar, the piece of making an uproar is located fin pipe's leeward side, and set up along the wind direction. The air current itself has the noise, and also can produce great noise when the air current passes through the fin pipe for noise in the over heater is great, falls in the over heater and makes an uproar, can the holistic noise condition of effectual reduction exhaust-heat boiler, reaches the purpose that exhaust-heat boiler made an uproar. Moreover, the noise reduction piece is arranged on the fin tube, so that the installation and maintenance are more convenient, the material is saved, the cost is relatively low and the overall performance of the waste heat boiler cannot be influenced for the outer side of the boiler body, the inner side of the boiler body or the outer side of a chimney.

2. The utility model discloses a structure of making an uproar falls is the steel sheet, falls the simple structure of making an uproar, and the material of steel sheet is extensive, easily with fin pipe erection joint, this makes the cost of falling the structure of making an uproar lower, more is fit for using widely.

3. The utility model discloses a length of making an uproar piece of falling along the wind direction does 1.5-3 times of fin pipe diameter, thickness do 0.1-0.2 of fin pipe diameter, it is one row down along the tail end distance of wind direction to fall the piece of making an uproar the distance of fin pipe does 1-2 times of fin pipe diameter, all can make the noise reduction effect of structure of making an uproar better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a noise reduction structure of the present invention;

description of reference numerals:

1-a finned tube; 2-noise reduction piece.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The first embodiment is as follows:

the noise reduction structure of the embodiment is arranged on a superheater of the waste heat boiler, and comprises a noise reduction piece 2 arranged on a fin tube 1 of the superheater, as shown in fig. 1, wherein the noise reduction piece 2 is positioned on the leeward side of the fin tube 1 and is arranged along the wind direction.

The number of the noise reduction pieces 2 arranged on one finned tube 1 is selected according to the use requirement and the diameter of the finned tube 1, and if the finned tube 1 is thick, two noise reduction pieces 2 can be arranged on one finned tube 1. In this embodiment, the fin tubes 1 and the superheater are commonly used, and one of the noise reduction members 2 is correspondingly disposed on one of the fin tubes 1. The length of the noise reduction piece 2 along the wind direction is 1.5-3 times of the diameter of the finned tube 1, and the thickness of the noise reduction piece 2 is 0.1-0.2 of the diameter of the finned tube 1.

In order to increase the heat exchange effect of the superheater, when the finned tubes 1 are arranged in a staggered manner, the noise reduction pieces 2 are also arranged in a staggered manner along with the finned tubes 1.

The distance from the tail end of the noise reducing piece 2 to the next row of the finned tubes 1 along the wind direction is 1-2 times of the diameter of the finned tubes 1, and the arrangement can prevent the air flow passing through the noise reducing piece 2 from generating turbulence together with the finned tubes 1 immediately downstream, so that larger noise is generated again.

In this embodiment, the noise reduction part 2 is welded on the fin tube 1, and the welding connection mode can ensure the reliability of the connection between the noise reduction part 2 and the fin tube 1, and can reduce the friction between the noise reduction part 2 and the fin tube 1 caused by vibration.

In this embodiment, the noise reduction member 2 is made of a steel plate. Of course, other hard sound absorbing materials are possible, and although sound absorbing materials have a better noise reduction effect, the cost is increased accordingly.

The noise reduction structure of the embodiment has the noise distribution tested by analog simulation software, and the noise reduction amount is larger than 15 decibels and the resistance is reduced by 50% in the structure with the rear time diameter of the finned tube ranging from 1.5D to 3D, wherein D refers to the diameter of the finned tube.

Example two:

the utility model discloses a waste heat boiler, including the over heater, be equipped with the structure of making an uproar of falling in embodiment one on the fin pipe 1 in the over heater.

When the waste heat boiler is used, gas with heat flows through the superheater, the heat in the gas exchanges heat with fluid in the finned tube 1, and the heat of the fluid in the finned tube 1 is increased and then is supplied to other sections for use. The air current itself has the noise, and also can produce great noise when the air current passes through fin pipe 1 for noise in the over heater is great, falls in the over heater and makes an uproar, can the holistic noise condition of effectual reduction exhaust-heat boiler, reaches the purpose that exhaust-heat boiler made an uproar.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a structure of making an uproar falls, locates on exhaust-heat boiler's the over heater, its characterized in that falls piece (2) of making an uproar including locating on over heater's fin pipe (1), fall piece (2) of making an uproar and be located the leeward side of fin pipe (1), and set up along the wind direction.

2. Noise reducing structure according to claim 1, characterized in that one of the noise reducing members (2) is arranged on one of the finned tubes (1) correspondingly.

3. Noise reducing structure according to claim 2, characterized in that the length of the noise reducing member (2) in the wind direction is 1.5-3 times the diameter of the finned tube (1).

4. A noise reducing structure according to any of claims 1-3, characterized in that the thickness of the noise reducer (2) is 0.1-0.2 of the diameter of the finned tube (1).

5. A noise reducing structure according to any of claims 1-3, characterized in that the noise reducing members (2) are arranged in a staggered manner with the finned tubes (1).

6. A noise reducing structure according to any of claims 1-3, characterized in that the tail end of the noise reducing element (2) in the wind direction is at a distance from the next row of finned tubes (1) of 1-2 times the diameter of the finned tubes (1).

7. A noise reducing structure according to any of claims 1-3, characterized in that the noise reducer (2) is welded on the fin tube (1).

8. Noise reducing structure according to claim 7, characterized in that the noise reducing elements (2) are steel plates.

9. A waste heat boiler, characterized in that it comprises a superheater, and the finned tube (1) in the superheater is provided with a noise reduction structure according to any one of claims 1-8.