Boiler heating surface ash-slag-bonding early warning device based on optical fiber temperature measurement

Abstract

The utility model discloses a boiler heating surface ash slagging early warning device based on optical fiber temperature measurement, comprising optical fibers which are horizontally or vertically arranged around the periphery of a front wall, a left wall, a rear wall and a right wall of a hearth according to monitoring requirements; the temperature measuring sensor is positioned in the optical fiber and is arranged at a central monitoring point of a fin on the back fire side of the water cooling wall; and the data processing terminal is used for performing early warning and display of different degrees of ash deposition and slag bonding of the boiler through data algorithm model processing on the basis of the water cooling wall fin temperature data measured by the temperature measurement sensor on the optical fiber. A plurality of temperature measurement sensors arranged on a plurality of optical fibers are adopted to realize synchronous measurement of different areas of the water-cooled wall fins; the data processing terminal accurately reads temperature measurement data at high frequency and performs data processing based on an algorithm model, pre-warns the ash deposition and slag bonding degree of the boiler, guides an operator to adjust the operation state of the boiler, and has extremely high practical significance for guaranteeing the safety of the heating surface of the boiler.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler heating surface monitoring, and particularly relates to a boiler heating surface fouling and slagging warning device based on optical fiber temperature measurement. Background Technique

[0002] In the process of boiler fuel combustion, on the one hand, due to the presence of various complex minerals in the fuel, and on the other hand, due to different combustion conditions at different positions of the boiler, different degrees of fouling and slagging will exist in different areas. The presence of ash and slag will affect the heat transfer process of the heating surface. When the fouling is severe, larger slag blocks will be generated, and if the slag blocks fall off, it will seriously threaten the safe operation of the boiler. Therefore, in the boiler operation monitoring system, it is necessary to monitor and warn the degree of fouling and slagging of the boiler heating surface.

[0003] In the existing widely used technologies, only the slagging conditions of local walls can be monitored through acoustic measurement technology and industrial control cameras, which cannot reflect the situation of the entire furnace, and the service life is limited and the installation cost is high. The manual method has a high working intensity and there are personnel safety risks. Summary of the Invention

[0004] The utility model aims to solve at least one of the technical problems in the related technologies to a certain extent.

[0005] For this purpose, an object of the utility model is to propose a boiler heating surface fouling and slagging warning device based on optical fiber temperature measurement. The utility model uses multiple temperature sensors arranged on multiple optical fibers to realize synchronous measurement of different areas of the water wall fin; through the data processing terminal, the temperature measurement data is accurately read at high frequency and data processing is carried out based on the algorithm model to warn the degree of boiler fouling and slagging, guide the operator to adjust the boiler operation state, and has extremely strong practical significance for ensuring the safety of the boiler heating surface.

[0006] To achieve the above object, an embodiment of one aspect of the utility model proposes a boiler heating surface fouling and slagging warning device based on optical fiber temperature measurement, including:

[0007] Optical fibers, which are arranged horizontally or vertically around the four sides of the front wall, left wall, rear wall, and right wall of the furnace according to the monitoring requirements;

[0008] Temperature sensors, which are located in the optical fibers and are arranged at the central monitoring points of the water wall backfire side fins;

[0009] A data processing terminal, which is used to warn and display the degree of boiler fouling and slagging based on the temperature data of the water wall fins measured by the temperature sensors on the optical fibers.

[0010] Furthermore, the optical fiber is at least one optical fiber, and at least one temperature sensor is arranged on each optical fiber;

[0011] The temperature measurement sensor is engraved into the optical fiber according to different distance requirements through laser technology;

[0012] The temperature measurement sensor is welded to the fin on the backfire side of the water-cooled wall and is used to synchronously measure the temperatures of different areas of the fin of the water-cooled wall.

[0013] Furthermore, the data processing terminal is specifically used for:

[0014] Collect the temperature field data of the fins of the water-cooled wall at various positions of different heating surfaces, process the data through a data algorithm model, compare and analyze it with the temperature field data when there is no slagging, determine the degree of ash fouling and slagging at different positions around the furnace, and give early warnings and displays.

[0015] Furthermore, it further includes:

[0016] An optical fiber extension cable, one end of the optical fiber extension cable is connected to at least one optical fiber, and the other end passes through the optical fiber extension cable connection outlet left in the outer layer of the furnace and is connected to the data processing terminal.

[0017] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0018] The above-mentioned and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0019] Figure 1 is a flow block diagram of a boiler heating surface ash fouling and slagging warning device based on optical fiber temperature measurement according to an embodiment of the present utility model;

[0020] Figure 2 is a layout schematic diagram of an optical fiber temperature measurement device according to an embodiment of the present utility model;

[0021] Figure 3 is a schematic diagram of a multi-point arranged optical fiber temperature measurement sensor according to an embodiment of the present utility model. Detailed Embodiments

[0022] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0023] The boiler heating surface ash fouling and slagging warning device based on optical fiber temperature measurement proposed according to the embodiments of the present utility model will be described below with reference to the drawings.

[0024] Figure 1 This is a schematic structural diagram of a boiler heating surface fouling and slagging warning device based on optical fiber temperature measurement according to an embodiment of the present utility model.

[0025] As Figure 1 shown, the warning system 10 includes: an optical fiber 100, a temperature measurement sensor 200, and a data processing terminal 300.

[0026] The optical fiber 100 is arranged horizontally or vertically around the four sides of the front wall, left wall, rear wall, and right wall of the furnace according to the monitoring requirements.

[0027] The temperature measurement sensor 200 is located in the optical fiber 100, and the temperature measurement sensor 200 is arranged at the center monitoring point of the fin on the backfire side of the water wall.

[0028] The data processing terminal 300 is used to perform boiler fouling and slagging degree warning and display based on the water wall fin temperature data measured by the temperature measurement sensor 200 on the optical fiber 100.

[0029] Further, in an embodiment of the present utility model, multiple optical fibers are arranged around the furnace according to actual needs, and there are multiple temperature measurement sensors on each optical fiber, which can be engraved into the optical fiber by laser technology according to different distance requirements.

[0030] The temperature measurement sensor is welded to the fin on the backfire side of the water wall to synchronously measure the temperatures of different areas of the water wall fin.

[0031] Further, the data processing terminal is specifically used for:

[0032] Collecting the temperature field data of the water wall fins at various positions of different heating surfaces, processing through a data algorithm model, comparing and analyzing with the temperature field data when there is no slagging, determining the fouling and slagging degrees at different positions around the furnace, and performing warning and display.

[0033] Further, in an embodiment of the present utility model, it further includes:

[0034] After welding the temperature measurement sensor to the fin on the backfire side of the water wall, the outer thermal insulation cotton of the furnace is restored, and at the same time, an outlet for connecting the optical fiber extension cable is left. The data processing terminal is connected to multiple optical fibers through the optical fiber extension cable to read the temperature data.

[0035] Further, in an embodiment of the present utility model, an algorithm processing module is used to analyze and process based on the collected temperature data through a data model to determine the fouling and slagging degrees at different positions around the furnace.

[0036] An early warning display module is used to perform early warning display of fouling and slagging based on the determined fouling and slagging degrees at different positions around the furnace.

[0037] The following describes in detail the boiler heating surface fouling and slagging early warning device based on optical fiber temperature measurement of the present utility model through specific embodiments.

[0038] In this embodiment, the boiler heating surface fouling and slagging early warning device based on optical fiber temperature measurement includes, for example:

[0039] Figure 2 It is a layout schematic diagram of the optical fiber temperature measurement device, and the list of components represented by each label is as follows: 1 - optical fiber temperature measurement sensor, 2 - water wall fin, 3 is a schematic diagram of the fouling and slagging position.

[0040] 1 - The function of the optical fiber temperature measurement sensor is to measure the working medium temperature of the water wall fin. The temperature measurement range is 0 - 1200 °C, the resolution is 0.1 °C, and it can be flexibly arranged according to the required number of layout points.

[0041] 2 - Water wall tube, the temperature measurement sensor is installed by non-destructive welding at the center of the fin on the backfire side without the need to cut the tube.

[0042] Figure 3 It is a schematic diagram of multi-point layout of optical fiber temperature measurement sensors (for example, four optical fibers are arranged, and 20 optical fiber temperature measurement sensors are arranged on each optical fiber, with a total of 80 water wall temperature measurement points. This quantity is determined according to project requirements). The optical fibers are arranged horizontally or vertically around the front wall, left wall, back wall, and right wall of the furnace, and can comprehensively monitor the temperatures of the water wall fins around the furnace.

[0043] Data is transmitted through the optical fiber, and the water wall fin temperature data is transmitted to the data processing terminal for data processing.

[0044] This embodiment uses multiple optical fibers to achieve synchronous measurement of different regions of the water wall fins. Through high-frequency and accurate reading of temperature measurement data and data processing of the algorithm model, the fouling and slagging degrees of the boiler are warned. This solution has less wiring and high accuracy of temperature measurement components, and can meet the actual temperature measurement requirements of the project; it provides a new technical means for the safety monitoring of the heating surface for operators.

[0045] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0047] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. An early warning device for ash fouling and slagging of boiler heating surfaces based on optical fiber temperature measurement, characterized in that, Including: Optical fibers, which are arranged horizontally or vertically around the four sides of the front wall, left wall, rear wall, and right wall of the furnace according to monitoring requirements; Temperature sensors, which are located in the optical fibers and are arranged at the monitoring points at the centers of the fin on the backfire side of the water wall; Data processing terminals, which are used to give early warnings and display the degree of boiler fouling and slagging based on the temperature data of the water wall fins measured by the temperature sensors on the optical fibers.

2. The ash fouling and slagging warning device for boiler heating surface based on optical fiber temperature measurement according to claim 1, characterized in that The optical fibers are at least one optical fiber, and at least one temperature sensor is arranged on each optical fiber; The temperature sensors are engraved into the optical fibers by laser technology according to different distance requirements; The temperature sensors are welded to the fins on the backfire side of the water wall and are used to synchronously measure the temperatures of different areas of the water wall fins.

3. The ash fouling and slagging warning device for boiler heating surface based on optical fiber temperature measurement according to claim 1, wherein, The data processing terminal is specifically used for: Collecting the temperature field data of the water wall fins at various positions of different heating surfaces, processing through a data algorithm model, comparing and analyzing with the temperature field data when there is no slagging, determining the degree of fouling and slagging at different positions around the furnace, and giving early warnings and displays.

4. The boiler heating surface fouling and slagging warning device based on optical fiber temperature measurement according to claim 2, characterized in that It also includes: Optical fiber extension lines, one end of the optical fiber extension lines is connected to the at least one optical fiber, and the other end passes through the optical fiber extension line connection outlet left outside the furnace outer layer and is connected to the data processing terminal.

Images