Intelligent control device for combustion diagnosis of key parameters of hearth

Abstract

The utility model relates to the field of hearth combustion control equipment, in particular to an intelligent control device for hearth key parameter combustion diagnosis, which comprises a plurality of sound wave temperature measurement transmitters and a plurality of sound wave temperature measurement receivers which are arranged on the same plane of a hearth with a rectangular cross section, the sound wave temperature measurement emitters and the sound wave temperature measurement receivers are uniformly arranged on the same rectangular plane at intervals, and the sound wave temperature measurement receivers receive signals of the sound wave temperature measurement emitters which are not on the same straight line; the sound wave temperature measurement receiver is in signal connection with a sound wave temperature measurement controller, and the sound wave temperature measurement controller is in signal connection with a background display assembly. According to the utility model, the temperature of each area in the hearth can be accurately and timely measured.

Description

Technical Field

[0001] The utility model relates to the field of furnace combustion control equipment, in particular to an intelligent control device for combustion diagnosis of key furnace parameters. Background Art

[0002] The boiler is an important equipment in a thermal power plant that ensures that the fuel ignites and burns smoothly on the grate, mixes the flue gas containing combustible gas with the air, and releases as much heat as possible during combustion. The furnace is the key place in the overall boiler equipment to complete the combustion task.

[0003] During the combustion process, furnace temperature is a key parameter in combustion diagnosis, making it crucial to monitor it. Current methods for monitoring furnace temperature use a combination of infrared and acoustic temperature measurement. However, due to the large size of the furnace, combustion temperatures vary at various locations. This leads to deviations in the temperature monitoring results at various locations, which can lead to errors in combustion diagnosis. Utility Model Content

[0004] The utility model aims to provide an intelligent control device for combustion diagnosis of key furnace parameters, so as to solve the problem of deviation in monitoring results of temperatures at various positions in the furnace.

[0005] The intelligent control device for combustion diagnosis of key furnace parameters in this solution includes multiple acoustic temperature measurement transmitters and multiple acoustic temperature measurement receivers arranged on the same plane of a rectangular cross-section furnace. The acoustic temperature measurement transmitters and acoustic temperature measurement receivers are evenly spaced from each other on the same rectangular plane, and the acoustic temperature measurement receivers receive signals from acoustic temperature measurement transmitters that are not on the same straight line;

[0006] The acoustic wave temperature measurement receiver signal is connected to the acoustic wave temperature measurement controller, and the acoustic wave temperature measurement controller signal is connected to the background display component.

[0007] The beneficial effects of this program are:

[0008] By arranging multiple acoustic temperature measurement receivers and multiple acoustic temperature measurement transmitters in the rectangular cross-section of the furnace, the acoustic temperature measurement receivers and acoustic temperature measurement transmitters are evenly distributed at intervals on the rectangular cross-section of the furnace, and using the sound field of the device to cut the furnace into multiple temperature blocks, the temperature values ​​of different areas in the furnace can be measured accurately and timely.

[0009] Furthermore, the background display component includes a power plant DCS controller and a host computer display, the acoustic temperature measurement controller signal is connected to the power plant DCS controller, and the power plant DCS controller signal is connected to the host computer display.

[0010] The beneficial effect is that through the setting of the background display component, the real-time monitoring situation of the furnace can be viewed.

[0011] Furthermore, the DCS controller is signal-connected to a carbon monoxide analysis control cabinet, and the carbon monoxide analysis control cabinet is signal-connected to a plurality of carbon monoxide detection probes, and the carbon monoxide probes are located at the medium outflow end of the furnace.

[0012] The beneficial effects are: real-time monitoring and display of carbon monoxide, which facilitates subsequent control operations, improves boiler efficiency and reduces nitrogen oxides in the furnace, consolidates the safety foundation of the boiler unit and reduces fuel costs.

[0013] Furthermore, the carbon monoxide probes are arranged on the radial cross section of the same rectangle, and the carbon monoxide probes are evenly located on two opposite side walls.

[0014] The beneficial effect is that the setting of the carbon monoxide probe can accurately detect the amount of nitrogen oxides from multiple locations.

[0015] Furthermore, the acoustic wave temperature measurement transmitter and the acoustic wave temperature measurement receiver are both provided with a mounting base, a cavity is defined in the mounting base, and an inner wall of the cavity is coated with a heat insulation layer.

[0016] The beneficial effect is that the temperature in the cavity can be reduced by setting the installation structure of the temperature measuring sensor, so that the wires and connectors of the wires for transmitting data from the sensor are less affected by the temperature, thereby improving the service life.

[0017] Furthermore, the mounting base is tilted toward the end face on one side of the furnace, the high end of the mounting base faces the combustion side of the furnace, the cavity is located at the low end of the mounting base, and the acoustic temperature measurement transmitter and the acoustic temperature measurement receiver are located at the high end of the mounting base.

[0018] The beneficial effect is that the cavity position and sensor position after the installation base is tilted can reduce the heat conducted when directly contacting the air flow in the furnace, and further reduce the degree of temperature interference on the sensor wires and wire connectors.

[0019] Furthermore, the installation base is embedded in the inner wall of the furnace at two-thirds of the height of the cavity, and the volume of the cavity is one-half of the volume of the installation base.

[0020] The beneficial effect is that the sensor can accurately detect the temperature while reducing the amount of heat exchange in the cavity from the furnace.

[0021] Furthermore, the inclined angle between the top surface of the mounting base and the radial cross section of the furnace is 45°-60°.

[0022] The beneficial effect is that the inclination angle setting of the top surface of the mounting base can ensure that the sensor is directly contacted with the air flow in the furnace to perform temperature detection after being arranged at a higher end. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the installation of an embodiment of the intelligent control device for combustion diagnosis of key furnace parameters of the utility model;

[0024] Figure 2 This is a schematic diagram of the cross-sectional installation of a furnace in an embodiment of the intelligent control device for combustion diagnosis of key furnace parameters of the present invention;

[0025] Figure 3 This is a diagram showing the temperature measurement results in the furnace in an embodiment of the intelligent control device for combustion diagnosis of key furnace parameters of the present utility model;

[0026] Figure 4 This is a front view of an embodiment of the intelligent control device for combustion diagnosis of key furnace parameters of the utility model. DETAILED DESCRIPTION

[0027] The following is further explained in detail through specific implementation methods.

[0028] The reference numerals in the drawings of the specification include: an acoustic temperature measurement receiver 1 , an acoustic temperature measurement transmitter 2 , an acoustic temperature measurement controller 3 , a DCS controller 4 , a host computer display 5 , a carbon monoxide detection probe 6 , and a carbon monoxide analysis control cabinet 7 .

[0029] Example 1

[0030] Intelligent control device for combustion diagnosis of key furnace parameters, such as Figure 1 and Figure 2 As shown: it includes multiple acoustic wave temperature measurement transmitters 2 and multiple acoustic wave temperature measurement receivers 1 arranged on the same plane of a rectangular cross-section furnace. Taking six acoustic wave temperature measurement transmitters 2 and six acoustic wave temperature measurement receivers 1 as an example, the acoustic wave temperature measurement transmitters 2 and acoustic wave temperature measurement receivers 1 are evenly spaced from each other on the same rectangular plane, that is, the acoustic wave temperature measurement transmitters 2 and acoustic wave temperature measurement receivers 1 are evenly spaced on the same side wall of the furnace, and the acoustic wave temperature measurement receivers 1 receive signals from acoustic wave temperature measurement transmitters 2 that are not on the same straight line, that is, the acoustic wave temperature measurement receiver 1 receives signals from acoustic wave temperature measurement transmitters 2 arranged on opposite sides and adjacent two sides.

[0031] The signal of the acoustic temperature measurement receiver 1 is connected to the acoustic temperature measurement controller 3, the signal of the acoustic temperature measurement controller 3 is connected to the background display component, the background display component includes the power plant DCS controller 4 and the host computer display 5, the signal of the acoustic temperature measurement controller 3 is connected to the power plant DCS controller 4, and the signal of the power plant DCS controller 4 is connected to the host computer display 5.

[0032] The acoustic temperature measurement transmitter 2 and the acoustic temperature measurement receiver 1 are both provided with a mounting base, in which a cavity is provided, and the inner wall of the cavity is coated with a heat-insulating layer to protect the wire joints of the sensor and reduce the degree of influence of high temperature. The mounting base is tilted toward the end face of the furnace, with the high end of the mounting base facing the combustion side of the furnace. The cavity is located at the low end of the mounting base, and the acoustic temperature measurement transmitter 2 and the acoustic temperature measurement receiver 1 are located at the high end of the mounting base. The mounting base is embedded in the inner wall of the furnace at two-thirds of the height of the cavity, and the volume of the cavity is one-half of the volume of the mounting base. The inclination angle between the top surface of the mounting base and the radial cross-section of the furnace is 45°-60°, and the specific inclination angle is set according to actual needs.

[0033] Each sensor measures the temperature of the 16 temperature measurement blocks cut into the furnace. Figure 3 shown.

[0034] By arranging six acoustic temperature measurement receivers 1 and six acoustic temperature measurement transmitters 2 on the rectangular cross-section of the furnace, the acoustic temperature measurement receivers 1 and the acoustic temperature measurement transmitters 2 are evenly distributed on the rectangular cross-section of the furnace at intervals. The furnace is divided into 16 temperature blocks by using the sound field of the device, and the temperature values ​​of different areas in the furnace can be measured accurately and timely.

[0035] Example 2

[0036] The intelligent control device for combustion diagnosis of key furnace parameters is different from the first embodiment in that Figure 4 As shown, the DCS controller 4 is signal-connected to a carbon monoxide analysis control cabinet 7, which can be an existing product. This cabinet is signal-connected to multiple carbon monoxide detection probes 6, also existing products, such as the fixed SGA-500F-CO. The carbon monoxide probes are located at the outlet of the furnace. The carbon monoxide probes are arranged on the radial cross-section of the same rectangle, evenly spaced on two opposing side walls.

[0037] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An intelligent control device for combustion diagnosis of key furnace parameters, characterized by: It includes a plurality of acoustic temperature measurement transmitters and a plurality of acoustic temperature measurement receivers arranged on the same plane of a rectangular cross-section furnace, wherein the acoustic temperature measurement transmitters and the acoustic temperature measurement receivers are evenly spaced from each other on the same rectangular plane, and the acoustic temperature measurement receivers receive signals from acoustic temperature measurement transmitters that are not on the same straight line; The acoustic wave temperature measurement receiver signal is connected to the acoustic wave temperature measurement controller, and the acoustic wave temperature measurement controller signal is connected to the background display component.

2. The intelligent control device for combustion diagnosis of key furnace parameters according to claim 1 is characterized in that: The background display component includes a power plant DCS controller and a host computer display. The acoustic temperature measurement controller signal is connected to the power plant DCS controller, and the power plant DCS controller signal is connected to the host computer display.

3. The intelligent control device for combustion diagnosis of key furnace parameters according to claim 2 is characterized in that: The DCS controller is signal-connected to a carbon monoxide analysis control cabinet, and the carbon monoxide analysis control cabinet is signal-connected to a plurality of carbon monoxide detection probes, which are located at the medium outflow end of the furnace.

4. The intelligent control device for combustion diagnosis of key furnace parameters according to claim 3 is characterized in that: The carbon monoxide detection probes are arranged on the radial cross section of the same rectangle, and the carbon monoxide detection probes are evenly located on two opposite side walls.

5. The intelligent control device for combustion diagnosis of key furnace parameters according to claim 1 is characterized in that: The acoustic wave temperature measurement transmitter and the acoustic wave temperature measurement receiver are both provided with a mounting base, a cavity is opened in the mounting base, and the inner wall of the cavity is coated with a heat insulation layer.

6. The intelligent control device for combustion diagnosis of key furnace parameters according to claim 5 is characterized in that: The mounting base is tilted toward the end face of one side of the furnace, the high end of the mounting base faces the combustion side of the furnace, the cavity is located at the low end of the mounting base, and the acoustic temperature measurement transmitter and the acoustic temperature measurement receiver are located at the high end of the mounting base.

7. The intelligent control device for combustion diagnosis of key furnace parameters according to claim 6 is characterized in that: The installation base is embedded in the inner wall of the furnace at two-thirds of the height of the cavity, and the volume of the cavity is one-half of the volume of the installation base.

8. The intelligent control device for combustion diagnosis of key furnace parameters according to claim 6 is characterized in that: The inclined angle between the top surface of the mounting base and the radial cross section of the furnace is 45°-60°.

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