WO2021232620A1 - 一种吹灰器和吹灰系统 - Google Patents

一种吹灰器和吹灰系统 Download PDF

Info

Publication number
WO2021232620A1
WO2021232620A1 PCT/CN2020/113512 CN2020113512W WO2021232620A1 WO 2021232620 A1 WO2021232620 A1 WO 2021232620A1 CN 2020113512 W CN2020113512 W CN 2020113512W WO 2021232620 A1 WO2021232620 A1 WO 2021232620A1
Authority
WO
WIPO (PCT)
Prior art keywords
soot
blowing part
soot blowing
air
soot blower
Prior art date
Application number
PCT/CN2020/113512
Other languages
English (en)
French (fr)
Inventor
张晨
高艳
李力
Original Assignee
中科汇能(苏州)电子科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中科汇能(苏州)电子科技有限公司 filed Critical 中科汇能(苏州)电子科技有限公司
Publication of WO2021232620A1 publication Critical patent/WO2021232620A1/zh

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
    • F23J2700/001—Ash removal, handling and treatment means

Definitions

  • the invention relates to the technical field of boiler soot blowing, in particular to a soot blower and a soot blowing system.
  • the invention provides a soot blower, which aims to not only realize the soot blowing function efficiently and economically, but also to effectively avoid the soot blower from being blocked, and to ensure the normal use of the soot blower.
  • a soot blower includes a lower soot blowing part and an air passage communicating with an air inlet of the lower soot blowing part, and a Laval nozzle is arranged between the air inlet and the air outlet of the lower soot blowing part to communicate.
  • it further includes an upper soot blowing part with an air inlet communicating with the air passage, and a Laval nozzle is arranged between the air inlet and the air outlet of the upper soot blowing part to communicate.
  • the flow resistance of the upper soot blowing part is greater than the flow resistance of the lower soot blowing part.
  • the soot blower when the soot blower is not working, the settled ash in the flue gas will enter the soot blower through the air outlet of the upper soot blower or the lower soot blower.
  • the pressure increases when the soot blower starts, and the air outlet of the lower soot blowing part is blocked and the flow resistance increases, and the flow resistance of the air outlet of the upper soot blowing part becomes smaller.
  • the soot blower sucks up the dust in the soot blower and continuously cleans the dust in the soot blower until it blows through the lower soot blower, so as to achieve the purpose of self-cleaning the dust inside the soot blower.
  • the throat diameter of the Laval sprinkler irrigation in the upper soot blowing part is 5 ⁇ 5-10 ⁇ 10 mm, and the throat diameter of the Laval sprinkler irrigation in the lower soot blowing part is 2 ⁇ 5 ⁇ 5 ⁇ 10mm.
  • the flow speed of the air flow can be accelerated, and then the dust deposit can be blown strongly, and the working performance of the soot blower can be improved.
  • the number of air outlets of the upper and lower soot blowing parts is 4-8.
  • the upper soot blowing part and the lower soot blowing part can spray airflow from different directions, and can strongly flush the dust deposits at different positions, which greatly improves the effect of soot blowing.
  • the sootblower further includes a chassis, the lower sootblower part is arranged on the chassis, and the chassis is provided with a plurality of mounting holes.
  • the fixed installation holes are arranged to facilitate good fixing and installation of the soot blower.
  • a sound wave device is arranged in the air passage, and is arranged in the airflow direction of the upper soot blowing part 2 and the lower soot blowing part 3.
  • compressed air is used as the energy source of the sound wave.
  • the high-strength titanium diaphragm self-oscillates under the action of the compressed air source, and generates resonance in the harmonic cavity to convert the compressed air potential energy. It is the low-frequency sound energy, which transmits the sound energy to the corresponding ash accumulation point through the air medium, so that the sound wave has the effect of "acoustic fatigue" on the ash and slag. Due to the repeated action of the sound wave oscillation, it is applied to the squeeze cycle of the ash and slag. When the changing load reaches a certain number of cyclic stresses, the structure of the ash and slag will be destroyed due to fatigue, and then the ash and slag will be removed from the surface of the attachment due to gravity or fluid media to improve the cleaning effect.
  • the present invention also provides a soot blowing system, which includes a high-pressure driving air source, an air supply main pipe and a control device, and a plurality of the above soot blowers, and the soot blowers are arranged in an array.
  • the soot blower sprays soot blowing jets with compressed air in multiple directions, and the compressed air of a certain pressure and flow rolls up the soot, destroys the settlement balance of the original soot, and forces the soot to become a turbulent state and follow the flue gas.
  • the unique design of the air outlets of the upper and lower sootblower parts can not only effectively remove the soot on the inner wall of the pipe, but also realize the self-cleaning function to ensure the normal operation of the sootblower. It has the characteristics of simple structure, high efficiency and economy.
  • the soot blowers are arranged in an array in the slope section and the horizontal section of the flue, and can operate normally in a high temperature environment without cooling, which is simple and convenient.
  • Fig. 1 is a schematic diagram of the structure of a soot blower according to the first embodiment of the present invention
  • FIG. 2 is a schematic diagram of the structure of the upper soot blowing part of the first embodiment of the present invention
  • FIG. 3 is a schematic diagram of the structure of the lower soot blowing part of the first embodiment of the present invention.
  • FIGS. 4 and 5 are diagrams of the working principle of the flat hole according to the first embodiment of the present invention.
  • Fig. 6 is an analysis diagram of air pressure in a flat hole according to the first embodiment of the present invention.
  • This embodiment is a soot blower, which includes an upper soot blowing part 2 and a lower soot blowing part 3.
  • the upper soot blowing part 2 includes an upper air inlet and an upper air outlet 5.
  • the lower soot blowing part 3 includes a lower air inlet and a lower air outlet 6, and the upper air inlet 5 and the lower air inlet 6 communicate with the same air passage 1.
  • the upper sootblower part 2, the lower sootblower part 3 and the air passage 1 are integrally formed, which greatly improves the mechanical strength thereof, thereby greatly extending the service life of the sootblower.
  • the upper soot blowing part 2 and the lower soot blowing part 3 are both arranged in a disc shape, and the upper soot blowing part 2 and the lower soot blowing part 3 are arranged to be concentric circles, and the air passage 1 is arranged at the center of the circle.
  • the upper soot blowing part 2 is evenly provided with 4 to 8 upper air outlets 5 in the circumferential direction, and the upper air inlet and the upper air outlet 5 are communicated with each other by opening flat holes in the upper soot blowing part 3.
  • the hole is a Laval nozzle, and the throat diameter of the flat hole is 5 ⁇ 5-10 ⁇ 10mm.
  • the lower soot blowing part 3 is evenly provided with 4 to 8 lower air outlets 6 in the circumferential direction, and the lower air inlet and the lower air outlet 6 are communicated with each other by opening flat holes in the lower soot blowing part 3.
  • the flat hole is a Laval nozzle, and the throat diameter of the flat hole is 2 ⁇ 5 ⁇ 5 ⁇ 10mm.
  • the upper soot blowing part 2 and the lower soot blowing part 3 can spray airflow from different directions, and can strongly flush the soot deposits at different positions, which greatly improves the effect of soot blowing.
  • the purpose of the flat hole is to accelerate the airflow, and even realize the conversion of subsonic airflow to supersonic airflow.
  • the compressed air flow in the flat hole is jetted backwards through the jet nozzle and enters A 1 of the nozzle.
  • the movement of compressed air follows the principle of "when the fluid moves in the pipe, the flow velocity is large at a small section, and the flow velocity at a large section is small", so the airflow continues to accelerate.
  • the flow velocity w kr has increased, even exceeding the speed of sound.
  • the transonic fluid no longer follows the principle of "higher flow velocity at small cross-sections and low flow velocity at large cross-sections” when moving, but on the contrary, the larger the cross-section, the faster the flow velocity.
  • a 2 the speed of the airflow is further accelerated, sometimes equivalent to several times the speed of sound, so that a huge jet is produced.
  • the flat hole actually acts as a "velocity increaser", and the thrust of the jet is amplified. .
  • the ambient pressure p a outside the outlet section remains constant, while the stagnation pressure P 0 of the nozzle inlet section is variable.
  • the gas pressure p e on the outlet section of the nozzle changes accordingly.
  • the gas is fully expanded in the flat hole, which is the optimal expansion state of the flat hole, also known as the design state, as shown in Figure 6.
  • the main characteristics of this flow are:
  • the flow resistance of the upper soot blowing part 2 is greater than the flow resistance of the lower soot blowing part 3. Specifically, the flow resistance between the upper air inlet and the upper air outlet 5 is greater than the flow resistance between the lower air inlet and the lower air outlet 6.
  • the soot blower is not working, the settled ash in the flue gas will enter the soot blower through the upper air outlet or the lower air outlet.
  • the pressure increases when the soot blower starts. Because the lower air outlet 6 is blocked and the flow resistance increases, the flow resistance of the upper soot blowing part 2 becomes smaller.
  • the compressed air is sprayed from the dust in the soot blower of the upper soot blowing part 2, and the soot blowing is continuously cleaned.
  • the dust in the soot blower is blown through the lower soot blower 3, so as to achieve the purpose of self-cleaning the dust inside the soot blower.
  • the soot blower also includes a sonic device, which is provided in the upper soot blowing part 2 and the lower soot blowing part 3, and is arranged in the upper soot blowing part 2 and the lower soot blowing part 3 In the direction of the airflow.
  • a sonic device which is provided in the upper soot blowing part 2 and the lower soot blowing part 3, and is arranged in the upper soot blowing part 2 and the lower soot blowing part 3 In the direction of the airflow.
  • auxiliary superposed acoustic wave device Through the auxiliary superposed acoustic wave device, compressed air is used as the energy source of sound waves.
  • the high-strength titanium diaphragm self-oscillates under the action of the compressed air source, and generates resonance in the resonance cavity, which converts the compressed air potential energy into low-frequency sound energy.
  • the sound energy is transferred to the corresponding ash accumulation point, so that the sound wave has the effect of "acoustic fatigue" on the ash and slag.
  • the structure of the ash and slag is destroyed due to fatigue, and then the ash and slag are removed from the surface of the attachment due to gravity or due to the fluid medium to improve the ash removal effect.
  • the soot blower is also provided with a chassis 4, the lower soot blower is provided on the chassis 4, and a mounting hole 7 is provided on the chassis 4 to facilitate good fixation and installation of the soot blower.
  • a soot blowing system includes a high-pressure driving air source, an air supply pipe, a control device, and the soot blower described in the first embodiment.
  • the control device issues instructions to control the high-pressure driving air source to generate air flow, and the air flow passes through
  • the gas supply main pipe enters the Laval jet soot blower to perform soot blowing.
  • the control device may adopt an industrial computer.
  • the soot blower adopts alloy material, which has the characteristics of high temperature resistance and corrosion resistance.
  • the stacked disc soot blowers are installed in the coal-fired power plant boilers arranged in an array on the slope section and horizontal section of the corner of the flame.
  • the air passage is connected with compressed air, which is driven by compressed air, and the automatic control system is used to intermittently.
  • the soot blower is composed of two layers of soot blowing holes, and the soot blowing jet is sprayed with compressed air in different directions.
  • the acoustic wave device can be superimposed, and the characteristics of the acoustic wave can be used to help clear the dust accumulation.
  • the structure of the present invention is reasonable in design. By arranging inside the slope section and the horizontal section flue in an array, it can operate normally in a high-temperature environment without cooling.
  • the unique design of the upper and lower layers can not only effectively remove the inner wall of the pipe. It accumulates dust and realizes the self-cleaning function at the same time to ensure the normal operation of the soot blower. It has the characteristics of simple structure, high efficiency and economy.
  • the description with reference to the terms “one embodiment”, “example”, “specific example”, etc. means that the specific feature, structure, material, or characteristic described in combination with the embodiment or example is included in at least the present invention. In one embodiment or example. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

Abstract

一种吹灰器，包括上吹灰部(2)和下吹灰部(3)，上吹灰部(2)包括上进气口和上出气口(5)，下吹灰部(3)包括下进气口和下出气口(6)，上进气口和下进气口连通同一个气道(1)。上进气口和上出气口(5)之间通过在上吹灰部(2)开设拉瓦尔喷孔连通，下进气口和下出气口(6)之间通过在下吹灰部(3)开设拉瓦尔喷孔连通，上吹灰部(2)和下吹灰部(3)能够从不同方向喷出气流，能够对不同位置的积灰进行强力冲刷，大大提高了吹灰的效果。

Description

一种吹灰器和吹灰系统 技术领域
本发明涉及锅炉吹灰技术领域，尤其涉及一种吹灰器和吹灰系统。
背景技术
发电厂锅炉折焰角积灰一直没有更好的办法解决，折焰角积灰如果严重会把高过、高再悬吊管埋在灰里，造成高温灰腐蚀，在高过、高再下端管壁形成腐蚀麻坑，导致管壁减薄，必须定期检查、更换管道，这会造成设备检修成本增加。同时在极端情况下积灰厚度达到一定程度时，在烟气的扰动下积灰会象雪崩一样突然倒灌入炉膛，有可能导致锅炉灭火保护动作启动，造成突然停炉的事故发生。因此，锅炉折焰角清灰势在必行，但因为锅炉折焰角烟气温度较高，吹灰设备材料耐高温、耐腐蚀要求需要更高，导致吹灰设备成本比较高，存在一定的缺陷。
发明内容
本发明提供了一种吹灰器，目的在于不仅能够高效经济地实现吹灰功能，同时还能有效地避免吹灰器发生堵塞，保证吹灰器的正常使用。
为实现上述技术目的，达到上述技术效果，本发明是通过以下技术方案实现：
一种吹灰器，包括下吹灰部和连通所述下吹灰部进气口的气道，所述下吹灰部的进气口和出气口之间设置拉瓦尔喷孔连通。
优选地，还包括进气口连通所述气道的上吹灰部，所述上吹灰部的进气口和出气口之间设置拉瓦尔喷孔连通。
优选地，所述上吹灰部的流阻大于所述下吹灰部的流阻。
基于上述技术特征，在所述吹灰器非工作状态的情况下，烟气中的沉降灰会通过上吹灰部或者下吹灰部的出气口进入吹灰器中，当沉降灰堵上下吹灰部的出气口时，吹灰器启动时压力增大，下吹灰部的出气口由于被堵流阻增大，上吹灰部的出气口流阻反而变小，此时压缩空气从上吹灰部卷吸吹灰 器内的粉尘喷出，不断清扫吹灰器内的粉尘，直到吹通下吹灰部，从而达到自清扫吹灰器内部积灰的目的。
优选地，所述吹灰器中，所述上吹灰部的拉瓦尔喷灌的喉径为5×5～10×10mm，所述下吹灰部的拉瓦尔喷灌的喉径为2×5～5×10mm。
基于上述技术特征，能够加速气流的流动速度，进而实现对积灰的强力吹刷，提升了吹灰器的工作性能。
优选地，所述上、下吹灰部的出气口的数量均为4～8个。
基于上述技术特征，上吹灰部以及下吹灰部能够从不同方向喷出气流，能够对不同位置的积灰进行强力冲刷，大大提高了吹灰的效果。
优选地，所述吹灰器还包括底盘，所述下吹灰部设置在所述底盘上，所述底盘设置若干安装孔。
基于上述技术特征，固定安装孔的设置，便于对吹灰器进行良好的固定和安装。
优选地，所述气道中设置有声波器，设置在所述上吹灰部2和下吹灰部3的气流方向上。
基于上述技术特征，通过辅助叠加声波器，以压缩空气作为声波的能源，高强度的钛金属膜片在压缩空气气源作用下自激振荡，并在谐腔内产生谐振，把压缩空气势能转换为低频声能，通过空气介质把声能传递到相应的积灰点，使声波对灰渣起到“声致疲劳”的作用，由于声波振荡的反复作用，施加于灰、渣的挤压循环变化的载荷，达到一定的循环应力次数时，灰、渣的结构因疲劳而破坏，然后因重力或因流体介质媒体将灰渣清除出附着体表面，提升清灰效果。
本发明还提供了一种吹灰系统，包括高压驱动气源、供气母管及控制装置，以及若干上述吹灰器，所述吹灰器以阵列的方式布置。
本发明的有益效果是：
所述吹灰器向多个方向以压缩空气喷出吹灰射流，一定压力、流量的压缩空气卷起积灰，破坏原积灰的沉降平衡状态，迫使积灰变为紊流状态跟随烟气的流动而流走，从而达到清除积灰的目的。并且，上、下吹灰部出气口 独特的设计，不仅能够有效清除管道内壁上的积灰，同时还实现了自我清洁功能，保证了吹灰器的正常运行，具有结构简单、高效经济的特点。所述吹灰系统中吹灰器通过以阵列的方式布置在斜坡段和水平段烟道内部，能够在没有冷却的高温环境下正常运行，简单便捷。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例一的吹灰器的结构示意图；
图2为本发明实施例一的上吹灰部的结构示意图；
图3是本发明实施例一的下吹灰部的结构示意图；
图4和图5为本发明实施例一的扁平状孔工作原理图；
图6为本发明实施例一的扁平状孔气压分析图。
附图中，各标号所代表的部件列表如下：
1-气道；2-上吹灰部；3-下吹灰部；4-底盘；5-上出气口；6-下出气口；7-安装孔。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请参阅图1-3所示，本实施例为一种吹灰器，包括上吹灰部2和下吹灰部3，所述上吹灰部2包括上进气口和上出气口5，所述下吹灰部3包括下进气口和下出气口6，所述上进气口5和下进气口6连通同一个气道1。所述上吹灰部2、下吹灰部3和气道1一体成型，大大提高了其机械强度，进而能够大大延长吹灰器的适用寿命。
所述上吹灰部2和下吹灰部3均设置圆盘形，并且设置上吹灰部2和下吹灰部3呈同心圆，所述气道1设置在圆心。
所述上吹灰部2周向均匀设置4～8个上出气口5，所述上进气口和上出气口5之间通过在上吹灰部3开设扁平状孔连通，所述扁平状孔为拉瓦尔喷孔，并且设置扁平状孔的喉径为5×5～10×10mm。
所述下吹灰部3周向均匀设置4～8个下出气口6，所述下进气口和下出气口6之间通过在所述下吹灰部3开设扁平状孔连通，所述扁平状孔为拉瓦尔喷孔，并且设置扁平状孔的喉径为2×5～5×10mm。所述上吹灰部2和下吹灰部3能够从不同方向喷出气流，能够对不同位置的积灰进行强力冲刷，大大提高了吹灰的效果。
扁平状孔目的是实现加速气流的作用，甚至可以实现亚声速气流向超声速气流的转化。如图4和图5，扁平状孔中的压缩空气气流经过射流喷管向后喷射，进入喷管的A 1。压缩空气运动遵循"流体在管中运动时，截面小处流速大，截面大处流速小"的原理，因此气流不断加速。当到达窄喉A kr时，流速w kr已经增大，甚至超过了音速。而跨音速的流体在运动时却不再遵循"截面小处流速大，截面大处流速小"的原理，而是恰恰相反，截面越大，流速越快。在A 2，气流的速度被进一步加速，有时相当于音速的几倍，这样就产生了巨大的射流，扁平状孔实际上起到了一个"流速增大器"的作用，其射流的推力被放大。
为了分析设计外界反压扁平状孔气流流动的影响，假设出口截面外的环境压强p a保持不变，而喷管进口截面的滞止压强P 0可变。当总压变化时，喷管出口截面上的气体压强p e随之变化。根据和的相对大小，气体在喷管中的流动状态中最佳状态为出口截面外的环境压强等于喷管出口截面上气体压强，即p a＝p e。
气体在扁平状孔中得到了完全膨胀，这就是扁平状孔的最佳膨胀状态，又称为设计状态，如图6所示。这种流动的主要特点是：
1)扁平状孔喉部达到了临界状态，出口流动为高速射流或超声速，即 Ma>1；
2)流体流出喷管后，既不膨胀，也不压缩，而是一平行射流；
3)由于管内流动为高速射流或超声速，当外界环境发生微小扰动时，扰动的传播速度小于流动速度，扰动不能传进扁平状孔内部。
上吹灰部2流阻大于下吹灰部3的流阻，具体的，上进气口和上出气口5之间的流阻大于下进气口和下出气口6之间的流阻。在吹灰器非工作状态的情况下，烟气中的沉降灰会通过上出气口或者下出气口进入吹灰器中，当沉降灰堵上、下出气口时，吹灰器启动时压力增大，下出气口6由于被堵流阻增大，上吹灰部2流阻反而变小，此时压缩空气从上吹灰部2卷吸吹灰器内的粉尘喷出，不断清扫吹灰器内的粉尘，直到吹通下吹灰部3，从而达到自清扫吹灰器内部积灰的目的。
所述吹灰器还包括声波器，所述声波器在所述上吹灰部2和下吹灰部3中都有设置，并且，设置在所述上吹灰部2和下吹灰部3的气流方向上。通过辅助叠加声波器，以压缩空气作为声波的能源，高强度的钛金属膜片在压缩空气气源作用下自激振荡，并在谐腔内产生谐振，把压缩空气势能转换为低频声能，通过空气介质把声能传递到相应的积灰点，使声波对灰渣起到“声致疲劳”的作用，由于声波振荡的反复作用，施加于灰、渣的挤压循环变化的载荷，达到一定的循环应力次数时，灰、渣的结构因疲劳而破坏，然后因重力或因流体介质媒体将灰渣清除出附着体表面，提升清灰效果。
所述吹灰器还是设置底盘4，所述下吹灰部设置在所述底盘4上，所述底盘4上设置安装孔7，便于对吹灰器进行良好的固定和安装。
实施例二
一种吹灰系统，包括高压驱动气源、供气母管、控制装置，以及实施例一所述的吹灰器，所述控制装置发出指令，控制所述高压驱动气源产生气流，气流经过所述供气母管，进入所述拉瓦尔射流吹灰器，实施吹灰。所述控制装置可以采用工业计算机。
所述吹灰器采用合金材料，具有耐高温、耐腐蚀的特性。在使用时，将叠层盘式吹灰器安装在燃煤发电厂锅炉以阵列的方式布置在折焰角斜坡段、 水平段，气道连接压缩空气，采用压缩空气驱动，配合自控系统以间歇或连续方式清除折焰角积灰，吹灰器由两层吹灰孔构成，向不同方向以压缩空气喷出吹灰射流，气流通过喉部被加速，以高速射流方式喷射出去，一定压力、流量的压缩空气卷起积灰，破坏原积灰的沉降平衡状态，卷吸积灰形成湍流，从而使积灰被流动的烟气带走，达到清除积灰的目的，从而达到清除积灰的目的。在此基础上，可以叠加声波器，利用声波特性辅助清楚积灰。
本发明结构设计合理，通过以阵列的方式布置在斜坡段和水平段烟道内部，能够在没有冷却的高温环境下正常运行，上、下叠层独特的设计，不仅能够有效清除管道内壁上的积灰，同时还实现了自我清洁功能，保证了吹灰器的正常运行，具有结构简单、高效经济的特点。
在本说明书的描述中，参考术语“一个实施例”、“示例”、“具体示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上公开的本发明优选实施例只是用于帮助阐述本发明。优选实施例并没有详尽叙述所有的细节，也不限制该发明仅为的具体实施方式。显然，根据本说明书的内容，可作很多的修改和变化。本说明书选取并具体描述这些实施例，是为了更好地解释本发明的原理和实际应用，从而使所属技术领域技术人员能很好地理解和利用本发明。本发明仅受权利要求书及其全部范围和等效物的限制。

Claims (10)

  1. 一种吹灰器，其特征在于：包括下吹灰部和连通所述下吹灰部进气口的气道，所述下吹灰部的进气口和出气口之间设置拉瓦尔喷孔连通，还包括进气口连通所述气道的上吹灰部，所述上吹灰部的进气口和出气口之间设置拉瓦尔喷孔连通。
  2. 根据权利要求1所述的吹灰器，其特征在于：所述上吹灰部的流阻大于所述下吹灰部的流阻。
  3. 根据权利要求2所述的吹灰器，其特征在于：所述上吹灰部的拉瓦尔喷孔的喉径为5×5～10×10mm，所述下吹灰部的拉瓦尔喷孔的喉径为2×5～5×10mm。
  4. 根据权利要求1所述的吹灰器，其特征在于：所述上吹灰部设置4～8个出气口。
  5. 根据权利要求1所述的吹灰器，其特征在于：所述上、下吹灰部层叠设置。
  6. 根据权利要求1所述的吹灰器，其特征在于：所述上吹灰部和下吹灰部呈同心圆，所述气道设置在圆心。
  7. 根据权利要求1所述的吹灰器，其特征在于：所述下吹灰部设置4～8个出气口。
  8. 根据权利要求1所述的吹灰器，其特征在于：所述吹灰器还包括底盘，所述下吹灰部设置在所述底盘上，所述底盘设置若干安装孔。
  9. 根据权利要求1所述的吹灰器，其特征在于：还设置声波器，所述声波器设置在所述上吹灰部和下吹灰部的气流方向上。
  10. 一种吹灰系统，包括高压驱动气源、供气母管及控制装置，其特征在于，还包括如权利要求1～9任一所述的吹灰器。
PCT/CN2020/113512 2020-05-22 2020-09-04 一种吹灰器和吹灰系统 WO2021232620A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010440402.9A CN111678156A (zh) 2020-05-22 2020-05-22 一种吹灰器和吹灰系统
CN202010440402.9 2020-05-22

Publications (1)

Publication Number Publication Date
WO2021232620A1 true WO2021232620A1 (zh) 2021-11-25

Family

ID=72434235

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/113512 WO2021232620A1 (zh) 2020-05-22 2020-09-04 一种吹灰器和吹灰系统

Country Status (2)

Country Link
CN (1) CN111678156A (zh)
WO (1) WO2021232620A1 (zh)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB277910A (en) * 1927-03-26 1927-09-29 Electricite De La Region De Va Improvements in pulverized coal furnaces
GB946649A (en) * 1961-08-25 1964-01-15 Riccardo Ambach Soot trap for oil or coal furnace chimney outlets
CN2493852Y (zh) * 2001-08-12 2002-05-29 李存德 空气蒸汽两用低频声波清灰器
CN101846325A (zh) * 2010-06-02 2010-09-29 中国石油化工集团公司 一种吹灰器
CN103148491A (zh) * 2011-12-06 2013-06-12 中国石油化工股份有限公司 一种气体吹灰器
CN207674475U (zh) * 2017-12-29 2018-07-31 中冶赛迪工程技术股份有限公司 一种急冷余热锅炉
CN109268854A (zh) * 2018-11-15 2019-01-25 伊思特（北京）能源科技有限公司 一种锅炉折焰角吹灰系统

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB277910A (en) * 1927-03-26 1927-09-29 Electricite De La Region De Va Improvements in pulverized coal furnaces
GB946649A (en) * 1961-08-25 1964-01-15 Riccardo Ambach Soot trap for oil or coal furnace chimney outlets
CN2493852Y (zh) * 2001-08-12 2002-05-29 李存德 空气蒸汽两用低频声波清灰器
CN101846325A (zh) * 2010-06-02 2010-09-29 中国石油化工集团公司 一种吹灰器
CN103148491A (zh) * 2011-12-06 2013-06-12 中国石油化工股份有限公司 一种气体吹灰器
CN207674475U (zh) * 2017-12-29 2018-07-31 中冶赛迪工程技术股份有限公司 一种急冷余热锅炉
CN109268854A (zh) * 2018-11-15 2019-01-25 伊思特（北京）能源科技有限公司 一种锅炉折焰角吹灰系统

Also Published As

Publication number Publication date
CN111678156A (zh) 2020-09-18

Similar Documents

Publication Publication Date Title
WO2014079160A1 (zh) 自激振荡喷嘴及带有该喷嘴的过滤器脉冲反吹清灰装置
CN108393310B (zh) 采用干冰颗粒清洗回转式空气预热器的系统及其使用方法
CN102430550A (zh) 往复式给水管道清洗装置
CN107442527A (zh) 具有两级共振功能的用于管道除垢的复合型空化清洗器
WO2021232620A1 (zh) 一种吹灰器和吹灰系统
CN212565825U (zh) 一种吹灰器和吹灰系统
CN1928434A (zh) 旋转阀式声波吹灰器
CN200979170Y (zh) 声波吹灰器
CN214019743U (zh) 一种新型除尘器喷吹装置
CN213840972U (zh) 一种吹灰器和吹灰系统
CN212441661U (zh) 一种燃煤锅炉气力吹灰系统平面吹扫式喷嘴
CN212441660U (zh) 一种燃煤锅炉气力吹灰系统旋风式喷嘴
CN210291931U (zh) 一种变频声波吹灰装置系统
CN109692856B (zh) 一种蒸汽管道吹扫的降噪装置及降噪方法
CN206929488U (zh) 火电锅炉管道冲管用消音器
CN112032748A (zh) 一种燃煤锅炉气力吹灰系统带圆形下喷管式喷嘴及吹灰方法
KR101516240B1 (ko) 클리닝 장치가 구비된 팬 조립체
CN212418367U (zh) 射流清管喷头
CN211778250U (zh) 一种风机在线除垢装置
CN111140547A (zh) 一种风机在线除垢装置
CN210584114U (zh) 一种脉冲清灰装置
CN101391166B (zh) 一种带速差射流的引流型脉冲喷吹清灰方法
CN218119784U (zh) 一种声波清灰装置
CN215027328U (zh) 一种消白除尘一体化除尘器装置
CN215863482U (zh) 一种压缩空气声波吹灰系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20937066

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20937066

Country of ref document: EP

Kind code of ref document: A1