WO2023015703A1 - Method for obtaining slagging state of water-cooled wall of boiler - Google Patents

Method for obtaining slagging state of water-cooled wall of boiler Download PDF

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WO2023015703A1
WO2023015703A1 PCT/CN2021/122706 CN2021122706W WO2023015703A1 WO 2023015703 A1 WO2023015703 A1 WO 2023015703A1 CN 2021122706 W CN2021122706 W CN 2021122706W WO 2023015703 A1 WO2023015703 A1 WO 2023015703A1
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millimeter
slagging
wave radar
water
boiler
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PCT/CN2021/122706
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French (fr)
Chinese (zh)
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方顺利
姚伟
刘家利
李仁义
张森
周广钦
贾子秀
杨忠灿
郝振彪
张喜来
王志超
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西安热工研究院有限公司
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Publication of WO2023015703A1 publication Critical patent/WO2023015703A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/04—Systems determining presence of a target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/04—Systems determining the presence of a target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications

Definitions

  • the invention belongs to the technical field of pulverized coal boiler combustion, and in particular relates to a method for obtaining the slagging state of a boiler water wall.
  • the phenomenon of slagging on the water wall of the boiler is a common phenomenon in the operation of the boiler, which affects the heat transfer of the heating surface of the water wall of the boiler. Therefore, during the operation of the boiler, it is necessary to grasp the slagging state of the heating surface of the water wall in time, and take measures such as soot blowing in time.
  • the slagging phenomenon of the water cooling wall is often observed through the fire viewing hole of the water cooling wall, but this method has a blind area of vision, and the flame in the furnace is too bright, it is difficult to see the slagging phenomenon of the water cooling wall with the naked eye, and it cannot be seen The thickness of the slagging layer.
  • the purpose of the present invention is to provide a method for obtaining the slagging state of the water wall of the boiler, by accurately measuring the distance from the various parts of the water wall, and comparing it with the distance when there is no slagging, so as to judge whether the water wall is slagging and the thickness of the slagging layer.
  • the invention has the advantages of low cost, fast measurement, high measurement accuracy and the like.
  • the present invention adopts following technical scheme to realize:
  • a method for obtaining the slagging state of boiler water wall comprising the following steps:
  • a further improvement of the present invention is that the measurement direction of the millimeter wave radar can swing up and down, left and right, so as to obtain distances at different measurement angles.
  • a further improvement of the present invention lies in that the installation position of the millimeter-wave radar is outside the opening of the water-cooled wall, so as to avoid damage to the millimeter-wave radar by the high temperature in the furnace.
  • a further improvement of the present invention lies in that the installation area of the millimeter wave radar is above the burner area and below the bottom of the panel superheater.
  • a further improvement of the present invention lies in that multiple millimeter-wave radars are installed in the millimeter-wave radar installation area.
  • a further improvement of the present invention is that each region of the water cooling wall can be detected by at least one millimeter-wave radar in the state of slagging.
  • a further improvement of the present invention is that when the same area of the water wall is detected by multiple millimeter-wave radars, the thickness of the slagging at this place is the average value of the thickness of the slagging layer detected by multiple millimeter-wave radars.
  • a further improvement of the present invention is that the millimeter wave radar can be replaced by a laser radar.
  • the present invention it is only necessary to open holes in the water-cooled wall area to install millimeter-wave radar or laser radar devices, and there is no high-temperature contact device in the furnace.
  • the cost of equipment and testing is low. Because it judges whether the water wall of the boiler is slagging by the relative change of the measurement distance, the measurement speed is extremely fast. Since there are no wearing parts and consumables during the measurement process, the cost per measurement is extremely low.
  • the invention Compared with the existing method for preventing the convective heating surface of the pulverized coal boiler from being stained and slagging, the invention has low cost for new construction or reconstruction, low test cost, high test time period and high test accuracy.
  • Fig. 1 is a schematic diagram of the system of the present invention.
  • Fig. 2 is a schematic diagram of the measurement range of multiple millimeter-wave radars of the present invention.
  • Fig. 3 is a schematic diagram of the arrangement of multiple millimeter-wave radars along the periphery of the furnace according to the present invention.
  • a kind of method that the present invention provides obtains boiler water wall slagging state comprises the following steps:
  • the measurement direction of the millimeter-wave radar can be swung up and down, left and right, so as to obtain the distance of different measurement angles.
  • a power plant there are holes in the water-cooled wall above the burner area and below the panel superheater, and 4 millimeter-wave radars are evenly installed on each furnace wall, a total of 16 radars.
  • the 16 radars acquire distance measurements at different angles from top to bottom and from left to right in each time period.
  • the thickness of the slag layer at this point is 213mm.
  • the 16 radars acquire distance measurements at different angles from top to bottom and from left to right in each time period. After completing the slagging state of all water wall areas above the boiler burner and below the panel superheater, it was found that at a distance of 12000mm from the bottom of the panel, there was an area of about 1m 2 slagging, and the maximum thickness of the slag layer was about 330mm .
  • the invention Compared with the existing method for preventing the convective heating surface of the pulverized coal boiler from being stained and slagging, the invention has low cost for new construction or reconstruction, low test cost, high test time period and high test accuracy.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

A method for obtaining the slagging state of a water-cooled wall of a boiler: the distance from various parts of a water-cooled wall is accurately measured, and is compared to the distance when the water-cooled wall is not slagging so as to determine whether various parts of the water-cooled wall are slagging and the thickness of a slagging layer. The method comprises: forming a hole in a water-cooled wall of a boiler, and mounting a millimeter-wave radar (3), the millimeter-wave radar (3) measuring the distance (d) from the other side of the boiler in the direction of the water-cooled wall and an included angle (α) between a measurement direction and a horizontal direction so as to determine whether a current measurement point is slagging and the thickness of a slagging layer; and adjusting the included angle (α) between the measurement direction of the millimeter-wave radar (3) and the horizontal direction, and an included angle between the measurement direction and a vertical direction, until the millimeter-wave radar (3) measures the distance in the direction of the water-cooled wall within a left-right range and an up-down range. In the steps above, the measurement direction of the millimeter-wave radar (3) may swing up-down and left-right so as to obtain distances from different measurement angles. The described method has the advantages of low costs, fast measurement, high measurement accuracy, etc.

Description

一种获取锅炉水冷壁结渣状态的方法A method to obtain the slagging state of boiler water wall 技术领域technical field
本发明属于煤粉锅炉燃烧技术领域，具体涉及一种获取锅炉水冷壁结渣状态的方法。The invention belongs to the technical field of pulverized coal boiler combustion, and in particular relates to a method for obtaining the slagging state of a boiler water wall.
背景技术Background technique
锅炉水冷壁的结渣锅炉运行中普遍存在的现象，影响了锅炉水冷壁受热面的传热，严重时甚至会引起锅炉的烟气、管壁超温、灭火等事故，对锅炉运行的安全性和经济性极为不利，因此，锅炉运行过程中，需及时掌握水冷壁受热面的结渣状态，并及时采取吹灰等措施。The phenomenon of slagging on the water wall of the boiler is a common phenomenon in the operation of the boiler, which affects the heat transfer of the heating surface of the water wall of the boiler. Therefore, during the operation of the boiler, it is necessary to grasp the slagging state of the heating surface of the water wall in time, and take measures such as soot blowing in time.
当前，常通过水冷壁的看火孔来观测水冷壁的结渣现象，但该方法存在视野盲区，且炉内火焰过于明亮的位置，肉眼难以看清水冷壁的结渣现象，也无法看到结渣层的厚度。At present, the slagging phenomenon of the water cooling wall is often observed through the fire viewing hole of the water cooling wall, but this method has a blind area of vision, and the flame in the furnace is too bright, it is difficult to see the slagging phenomenon of the water cooling wall with the naked eye, and it cannot be seen The thickness of the slagging layer.
发明内容Contents of the invention
本发明的目的是提供一种获取锅炉水冷壁结渣状态的方法，通过精确测量距水冷壁各处的距离，并与未结渣时的距离进行比对，从而判断水冷壁各处是否结渣以及结渣层的厚度。本发明具有成本低、测量快速，测量准确度高等优点。The purpose of the present invention is to provide a method for obtaining the slagging state of the water wall of the boiler, by accurately measuring the distance from the various parts of the water wall, and comparing it with the distance when there is no slagging, so as to judge whether the water wall is slagging and the thickness of the slagging layer. The invention has the advantages of low cost, fast measurement, high measurement accuracy and the like.
本发明采用如下技术方案来实现的：The present invention adopts following technical scheme to realize:
一种获取锅炉水冷壁结渣状态的方法，包括以下步骤：A method for obtaining the slagging state of boiler water wall, comprising the following steps:
(1)在锅炉水冷壁开孔，安装毫米波雷达；(1) Open holes in the water wall of the boiler and install millimeter-wave radar;
(2)毫米波雷达测量到锅炉另外一侧水冷壁方向的距离，记为d，测量方向与水平方向的夹角，记为α，在锅炉水冷壁未结渣时，测量α＝0°时，即水平方向 时毫米波雷达距另一侧水冷壁的距离，记为d 0； (2) The distance measured by the millimeter-wave radar to the direction of the water wall on the other side of the boiler is denoted as d, and the angle between the measurement direction and the horizontal direction is denoted as α. , that is, the distance between the millimeter-wave radar and the water wall on the other side in the horizontal direction, denoted as d 0 ;
(3)当
Figure PCTCN2021122706-appb-000001
时，距离毫米波雷达水平位置高度为d 0·tanα位置处的水冷壁无结渣；当
Figure PCTCN2021122706-appb-000002
时，距离毫米波雷达水平位置高度为
Figure PCTCN2021122706-appb-000003
Figure PCTCN2021122706-appb-000004
处的水冷壁有结渣，结渣层厚度为
Figure PCTCN2021122706-appb-000005
(3) when
Figure PCTCN2021122706-appb-000001
When , there is no slagging on the water-cooled wall at the position of d 0 ·tanα from the horizontal position of the millimeter-wave radar; when
Figure PCTCN2021122706-appb-000002
When , the distance from the horizontal position of the millimeter-wave radar is
Figure PCTCN2021122706-appb-000003
Figure PCTCN2021122706-appb-000004
There is slagging on the water wall at the place, and the thickness of the slagging layer is
Figure PCTCN2021122706-appb-000005
(4)调整毫米波雷达测量方向与水平方向的夹角及与垂直方向的夹角，直至完成该毫米波雷达在左右范围及上下范围内对水冷壁方向距离的测量。(4) Adjust the angle between the measurement direction of the millimeter-wave radar and the horizontal direction and the angle between the vertical direction until the measurement of the distance in the direction of the water wall by the millimeter-wave radar in the left and right ranges and up and down ranges is completed.
本发明进一步的改进在于，毫米波雷达的测量方向能够上下、左右摆动，从而获取不同测量角度的距离。A further improvement of the present invention is that the measurement direction of the millimeter wave radar can swing up and down, left and right, so as to obtain distances at different measurement angles.
本发明进一步的改进在于，毫米波雷达安装位置在水冷壁开孔外侧，以避免炉内高温损坏毫米波雷达。A further improvement of the present invention lies in that the installation position of the millimeter-wave radar is outside the opening of the water-cooled wall, so as to avoid damage to the millimeter-wave radar by the high temperature in the furnace.
本发明进一步的改进在于，毫米波雷达安装区域在燃烧器区域上方以及屏式过热器底部下方。A further improvement of the present invention lies in that the installation area of the millimeter wave radar is above the burner area and below the bottom of the panel superheater.
本发明进一步的改进在于，在毫米波雷达安装区域安装有多只毫米波雷达。A further improvement of the present invention lies in that multiple millimeter-wave radars are installed in the millimeter-wave radar installation area.
本发明进一步的改进在于，水冷壁每个区域至少能够被一只毫米波雷达检测到结渣状态。A further improvement of the present invention is that each region of the water cooling wall can be detected by at least one millimeter-wave radar in the state of slagging.
本发明进一步的改进在于，当水冷壁同一区域被多只毫米波雷达检测到时，该处结渣厚度为多只毫米波雷达检测结渣层厚度的平均值。A further improvement of the present invention is that when the same area of the water wall is detected by multiple millimeter-wave radars, the thickness of the slagging at this place is the average value of the thickness of the slagging layer detected by multiple millimeter-wave radars.
本发明进一步的改进在于，毫米波雷达能够替换为激光雷达。A further improvement of the present invention is that the millimeter wave radar can be replaced by a laser radar.
本发明至少具有如下有益的技术效果：The present invention has at least the following beneficial technical effects:
由于本发明中，仅需在水冷壁区域开孔安装毫米波雷达或者激光雷达装置，无与炉内高温接触装置，另外由于设备改造较少，因此设备及测试成本低。由于是通过测量距离的相对变化来判断锅炉水冷壁是否结渣，因此测量速度极快。由 于测量过程中无易损件，无耗材，因此每次测量成本极低。In the present invention, it is only necessary to open holes in the water-cooled wall area to install millimeter-wave radar or laser radar devices, and there is no high-temperature contact device in the furnace. In addition, due to less equipment modification, the cost of equipment and testing is low. Because it judges whether the water wall of the boiler is slagging by the relative change of the measurement distance, the measurement speed is extremely fast. Since there are no wearing parts and consumables during the measurement process, the cost per measurement is extremely low.
与现有防止煤粉锅炉对流受热面沾污结渣的方法相比，本发明新建或改造成本低，测试成本低，测试时间段，测试精确度高。Compared with the existing method for preventing the convective heating surface of the pulverized coal boiler from being stained and slagging, the invention has low cost for new construction or reconstruction, low test cost, high test time period and high test accuracy.
附图说明Description of drawings
为了更清楚的说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，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相关的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.
图1为本发明的系统示意图。Fig. 1 is a schematic diagram of the system of the present invention.
图2为本发明的多只毫米波雷达测量范围示意图。Fig. 2 is a schematic diagram of the measurement range of multiple millimeter-wave radars of the present invention.
图3为本发明的多只毫米波雷达沿炉膛四周布置示意图。Fig. 3 is a schematic diagram of the arrangement of multiple millimeter-wave radars along the periphery of the furnace according to the present invention.
附图标记说明：Explanation of reference signs:
1-燃烧器；2-炉底；3-毫米波雷达；4-水冷壁附着渣块；5-屏式过热器；6-炉膛；7-燃烧器区域；8-炉墙。1-burner; 2-furnace bottom; 3-millimeter wave radar; 4-slag attached to water wall; 5-panel superheater; 6-furnace; 7-burner area; 8-furnace wall.
具体实施方式Detailed ways
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。需要说明的是，在不冲突的情况下，本发明中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
如图1-3所示，本发明提供的一种获取锅炉水冷壁结渣状态的方法，包括以 下步骤：As shown in Figure 1-3, a kind of method that the present invention provides obtains boiler water wall slagging state, comprises the following steps:
(1)在锅炉水冷壁开孔，安装毫米波雷达。(1) Drill holes in the water wall of the boiler and install the millimeter wave radar.
(2)毫米波雷达测量到锅炉另外一侧水冷壁方向的距离，记为d，测量方向与水平方向的夹角，记为α。在锅炉水冷壁未结渣时，测量α＝0°时，即水平方向时毫米波雷达距另一侧水冷壁的距离，记为d 0。 (2) The distance measured by the millimeter-wave radar to the direction of the water wall on the other side of the boiler is denoted as d, and the angle between the measurement direction and the horizontal direction is denoted as α. When the water wall of the boiler is not slagging, measure the distance between the millimeter-wave radar and the water wall on the other side when α=0°, that is, in the horizontal direction, and record it as d 0 .
(3)当
Figure PCTCN2021122706-appb-000006
时，距离毫米波雷达水平位置高度为d 0·tanα位置处的水冷壁无结渣；当
Figure PCTCN2021122706-appb-000007
时，距离毫米波雷达水平位置高度为
Figure PCTCN2021122706-appb-000008
Figure PCTCN2021122706-appb-000009
处的水冷壁有结渣，结渣层厚度为
Figure PCTCN2021122706-appb-000010
(3) when
Figure PCTCN2021122706-appb-000006
When , there is no slagging on the water-cooled wall at the position of d 0 ·tanα from the horizontal position of the millimeter-wave radar; when
Figure PCTCN2021122706-appb-000007
When , the distance from the horizontal position of the millimeter-wave radar is
Figure PCTCN2021122706-appb-000008
Figure PCTCN2021122706-appb-000009
There is slagging on the water wall at the place, and the thickness of the slagging layer is
Figure PCTCN2021122706-appb-000010
(4)调整毫米波雷达测量方向与水平方向的夹角及与垂直方向的夹角，直至完成该毫米波雷达在左右范围及上下范围内对水冷壁方向距离的测量。(4) Adjust the angle between the measurement direction of the millimeter-wave radar and the horizontal direction and the angle between the vertical direction until the measurement of the distance in the direction of the water wall by the millimeter-wave radar in the left and right ranges and up and down ranges is completed.
毫米波雷达的测量方向可上下、左右摆动，从而获取不同测量角度的距离。The measurement direction of the millimeter-wave radar can be swung up and down, left and right, so as to obtain the distance of different measurement angles.
实施例Example
某电厂在燃烧器区域上方，屏式过热器下方区域水冷壁开孔，每面炉墙均匀安装4只毫米波雷达，共计16只。这16只雷达在每个时间周期内，从上到下，从左到右，获取不同角度距离的测量。In a power plant, there are holes in the water-cooled wall above the burner area and below the panel superheater, and 4 millimeter-wave radars are evenly installed on each furnace wall, a total of 16 radars. The 16 radars acquire distance measurements at different angles from top to bottom and from left to right in each time period.
在对某个方向的测量中，某只雷达测试方向为下倾30°，即α＝30°，该雷达测试到的距离为d＝11300mm，该雷达水平方向时，测的距离为d 0＝10000mm。 In the measurement of a certain direction, the test direction of a certain radar is 30° downtilt, that is, α=30°, the distance measured by the radar is d=11300mm, when the radar is in the horizontal direction, the measured distance is d 0 = 10000mm.
由于
Figure PCTCN2021122706-appb-000011
所以该位置有结渣，此处距离雷达波水平高度为
Figure PCTCN2021122706-appb-000012
Figure PCTCN2021122706-appb-000013
because
Figure PCTCN2021122706-appb-000011
Therefore, there is slagging at this position, and the distance from the radar wave level here is
Figure PCTCN2021122706-appb-000012
Figure PCTCN2021122706-appb-000013
同理，其余15只雷达，有两只雷达与该点位于同一面炉墙，无法测试该点的结渣状态，其余13只雷达测量该点的渣层厚度分别为：215mm、209mm、201mm、 220mm、207mm、215mm、214mm、219mm、220mm、224mm、209mm、206mm、216mm，因此，该点的渣层厚度为213mm。Similarly, among the remaining 15 radars, two radars are located on the same furnace wall as this point, and cannot test the slagging state of this point. 220mm, 207mm, 215mm, 214mm, 219mm, 220mm, 224mm, 209mm, 206mm, 216mm, therefore, the thickness of the slag layer at this point is 213mm.
这16只雷达在每个时间周期内，从上到下，从左到右，获取不同角度距离的测量。完成该锅炉燃烧器上方、屏式过热器下方的所有水冷壁区域结渣状态，发现在距离屏底下方12000mm位置处，有一块面积约为1m 2的区域结渣，最大渣层厚度约为330mm。 The 16 radars acquire distance measurements at different angles from top to bottom and from left to right in each time period. After completing the slagging state of all water wall areas above the boiler burner and below the panel superheater, it was found that at a distance of 12000mm from the bottom of the panel, there was an area of about 1m 2 slagging, and the maximum thickness of the slag layer was about 330mm .
与现有防止煤粉锅炉对流受热面沾污结渣的方法相比，本发明新建或改造成本低，测试成本低，测试时间段，测试精确度高。Compared with the existing method for preventing the convective heating surface of the pulverized coal boiler from being stained and slagging, the invention has low cost for new construction or reconstruction, low test cost, high test time period and high test accuracy.
虽然，上文中已经用一般性说明及具体实施方案对本发明作了详尽的描述，但在本发明基础上，可以对之作一些修改或改进，这对本领域技术人员而言是显而易见的。因此，在不偏离本发明精神的基础上所做的这些修改或改进，均属于本发明要求保护的范围。Although the present invention has been described in detail with general descriptions and specific embodiments above, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, the modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the protection scope of the present invention.

Claims (8)

  1. 一种获取锅炉水冷壁结渣状态的方法，其特征在于，包括以下步骤：A method for obtaining the slagging state of boiler water walls, characterized in that it comprises the following steps:
    (1)在锅炉水冷壁开孔，安装毫米波雷达；(1) Open holes in the water wall of the boiler and install millimeter-wave radar;
    (2)毫米波雷达测量到锅炉另外一侧水冷壁方向的距离，记为d，测量方向与水平方向的夹角，记为α，在锅炉水冷壁未结渣时，测量α＝0°时，即水平方向时毫米波雷达距另一侧水冷壁的距离，记为d 0； (2) The distance measured by the millimeter-wave radar to the direction of the water wall on the other side of the boiler is denoted as d, and the angle between the measurement direction and the horizontal direction is denoted as α. , that is, the distance between the millimeter-wave radar and the water wall on the other side in the horizontal direction, denoted as d 0 ;
    (3)当
    Figure PCTCN2021122706-appb-100001
    时，距离毫米波雷达水平位置高度为d 0·tanα位置处的水冷壁无结渣；当
    Figure PCTCN2021122706-appb-100002
    时，距离毫米波雷达水平位置高度为
    Figure PCTCN2021122706-appb-100003
    Figure PCTCN2021122706-appb-100004
    处的水冷壁有结渣，结渣层厚度为
    Figure PCTCN2021122706-appb-100005
    (3) when
    Figure PCTCN2021122706-appb-100001
    When , there is no slagging on the water-cooled wall at the position of d 0 ·tanα from the horizontal position of the millimeter-wave radar; when
    Figure PCTCN2021122706-appb-100002
    When , the distance from the horizontal position of the millimeter-wave radar is
    Figure PCTCN2021122706-appb-100003
    Figure PCTCN2021122706-appb-100004
    There is slagging on the water wall at the place, and the thickness of the slagging layer is
    Figure PCTCN2021122706-appb-100005
    (4)调整毫米波雷达测量方向与水平方向的夹角及与垂直方向的夹角，直至完成该毫米波雷达在左右范围及上下范围内对水冷壁方向距离的测量。(4) Adjust the angle between the measurement direction of the millimeter-wave radar and the horizontal direction and the angle between the vertical direction until the measurement of the distance in the direction of the water wall by the millimeter-wave radar in the left and right ranges and up and down ranges is completed.
  2. 根据权利要求1所述的一种获取锅炉水冷壁结渣状态的方法，其特征在于，毫米波雷达的测量方向能够上下、左右摆动，从而获取不同测量角度的距离。A method for obtaining the slagging state of the boiler water wall according to claim 1, characterized in that the measurement direction of the millimeter-wave radar can swing up and down, left and right, so as to obtain distances at different measurement angles.
  3. 根据权利要求1所述的一种获取锅炉水冷壁结渣状态的方法，其特征在于，毫米波雷达安装位置在水冷壁开孔外侧，以避免炉内高温损坏毫米波雷达。The method for obtaining the slagging state of the boiler water wall according to claim 1, wherein the installation position of the millimeter-wave radar is outside the opening of the water-cooled wall, so as to avoid damage to the millimeter-wave radar due to high temperature in the furnace.
  4. 根据权利要求3所述的一种获取锅炉水冷壁结渣状态的方法，其特征在于，毫米波雷达安装区域在燃烧器区域上方以及屏式过热器底部下方。A method for obtaining the slagging state of the boiler water wall according to claim 3, characterized in that the installation area of the millimeter wave radar is above the burner area and below the bottom of the panel superheater.
  5. 根据权利要求4所述的一种获取锅炉水冷壁结渣状态的方法，其特征在于，在毫米波雷达安装区域安装有多只毫米波雷达。The method for obtaining the slagging state of the water wall of the boiler according to claim 4, characterized in that a plurality of millimeter-wave radars are installed in the millimeter-wave radar installation area.
  6. 根据权利要求5所述的一种获取锅炉水冷壁结渣状态的方法，其特征在于，水冷壁每个区域至少能够被一只毫米波雷达检测到结渣状态。The method for obtaining the slagging state of the water-cooled wall of the boiler according to claim 5, characterized in that each area of the water-cooled wall can be detected by at least one millimeter-wave radar.
  7. 根据权利要求5所述的一种获取锅炉水冷壁结渣状态的方法，其特征在于，当水冷壁同一区域被多只毫米波雷达检测到时，该处结渣厚度为多只毫米波 雷达检测结渣层厚度的平均值。A method for obtaining the slagging state of the boiler water wall according to claim 5, characterized in that, when the same area of the water wall is detected by multiple millimeter-wave radars, the thickness of the slagging at this place is detected by multiple millimeter-wave radars Average value of slagging layer thickness.
  8. 根据权利要求1所述的一种获取锅炉水冷壁结渣状态的方法，其特征在于，毫米波雷达能够替换为激光雷达。A method for obtaining the slagging state of the boiler water wall according to claim 1, characterized in that the millimeter-wave radar can be replaced by a laser radar.
PCT/CN2021/122706 2021-08-10 2021-10-08 Method for obtaining slagging state of water-cooled wall of boiler WO2023015703A1 (en)

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US20150285620A1 (en) * 2012-11-08 2015-10-08 Anatoly Naftaly Menn Device for Monitoring Fouling Deposits in a Pulverized Coal Furnace
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WO2018097568A1 (en) * 2016-11-28 2018-05-31 한국생산기술연구원 System for controlling combustion furnace through monitoring of slagging layer
CN111562589A (en) * 2020-04-20 2020-08-21 国网浙江省电力有限公司电力科学研究院 Method for monitoring slag bonding degree of water wall of power station boiler
CN112629453A (en) * 2020-11-27 2021-04-09 北京航天计量测试技术研究所 Ultrasonic monitoring device, system and method for ash deposition and slag bonding of water-cooled wall of coal gasifier

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102252334A (en) * 2011-03-09 2011-11-23 严晓勇 Intelligent soot blowing method based on laser ranging principle
US20150285620A1 (en) * 2012-11-08 2015-10-08 Anatoly Naftaly Menn Device for Monitoring Fouling Deposits in a Pulverized Coal Furnace
US20150369549A1 (en) * 2012-12-05 2015-12-24 Valmet Technologies Oy An Arrangement in a Thermal Process, and a Method for Measuring the Thickness of a Contamination Layer
WO2018097568A1 (en) * 2016-11-28 2018-05-31 한국생산기술연구원 System for controlling combustion furnace through monitoring of slagging layer
CN111562589A (en) * 2020-04-20 2020-08-21 国网浙江省电力有限公司电力科学研究院 Method for monitoring slag bonding degree of water wall of power station boiler
CN112629453A (en) * 2020-11-27 2021-04-09 北京航天计量测试技术研究所 Ultrasonic monitoring device, system and method for ash deposition and slag bonding of water-cooled wall of coal gasifier

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