Equipment for controlling combustion of nitric oxide based on multi-point online monitoring

Abstract

The utility model relates to the technical field of nitrogen oxide combustion control, in particular to equipment for controlling combustion of nitrogen oxide based on multi-point online monitoring. Comprising a main pipeline and an auxiliary device, a connecting flange is arranged on the main pipeline, the auxiliary device comprises an adjusting ball valve, a positioning seat, a mounting head, a concentration detector and a sealing assembly, during use, the adjusting ball valve is mounted on the output side of the main pipeline firstly, and then the main pipeline and the adjusting ball valve are arranged on multiple point positions of the waste gas conveying pipeline through the connecting flange; when waste gas is conveyed into combustor equipment, the concentration of nitric oxide in the gas can be detected through concentration detectors at multiple points, the conveying flow can be controlled after adjustment of an adjusting ball valve, and therefore when the nitric oxide is combusted, the concentration of the nitric oxide in a waste gas conveying pipeline at multiple points can be detected; the data acquisition point location is improved, the data accuracy is improved, and equipment parameter setting is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen oxide combustion control, in particular to a device for controlling the combustion of nitrogen oxides based on multi-point online monitoring. Background Art

[0002] Nitrogen oxides are compounds composed solely of nitrogen and oxygen. Common nitrogen oxides include nitric oxide (NO, colorless), nitrogen dioxide (NO2, reddish-brown), nitrous oxide (N2O), and dinitrogen pentoxide (N2O5). With the exception of dinitrogen pentoxide, which is a solid under normal conditions, all other nitrogen oxides are gaseous. Nitrogen oxides (NOx), as air pollutants, often refer to NO and NO2.

[0003] The combustion treatment of nitrogen oxides is mainly achieved by improving combustion equipment or controlling combustion conditions to reduce the NOx concentration in the combustion exhaust gas, such as the common low-nitrogen oxide combustion technology, reburning technology and the installation of denitrification equipment.

[0004] When using low-NOx combustion technology and reburning technology to burn nitrogen oxides, the burner equipment needs to set working parameters according to the concentration of nitrogen oxides in the gas. However, traditional concentration detection of nitrogen oxides in the exhaust gas pipeline is mostly carried out at a single point, that is, the concentration detection sensor is directly set at a fixed point. There are fewer data collection points, and the data is not accurate enough, which is not conducive to equipment parameter setting. Utility Model Content

[0005] The purpose of this utility model is to provide a device for controlling the combustion of nitrogen oxides based on multi-point online monitoring. During the combustion treatment of nitrogen oxides, the nitrogen oxide concentration can be detected at multiple points in the exhaust gas conveying pipeline, thereby increasing the data collection points, improving data accuracy, and facilitating equipment parameter setting.

[0006] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: The present invention provides a device for controlling the combustion of nitrogen oxides based on multi-point online monitoring, comprising a main pipeline, the main pipeline being provided with connecting flanges, the connecting flanges being located on both sides of the main pipeline, and further comprising an auxiliary device;

[0007] The auxiliary device includes a regulating ball valve, a positioning seat, a mounting head, a concentration detector and a sealing assembly. The regulating ball valve is detachably connected to the main pipeline and is located on the output side of the main pipeline. The positioning seat is fixedly connected to the main pipeline and is located on the main pipeline. The mounting head is integrally formed with the positioning seat and is connected to the main pipeline and is located on the top of the positioning seat. The concentration detector is threadedly connected to the mounting head and is located on the side of the mounting head close to the main pipeline. The sealing assembly is respectively arranged on the main pipeline and the mounting head.

[0008] Wherein, the auxiliary device also includes a threaded plug, which is threadedly connected to the mounting head and is located on the top of the mounting head, and can be used to replace the concentration detector.

[0009] Wherein, a turntable is fixedly installed on the top of the regulating ball valve.

[0010] Wherein, the sealing assembly includes a first sealing gasket and a second sealing gasket, the first sealing gasket is detachably connected to the main pipe and is located between the main pipe and the positioning seat; the second sealing gasket is detachably connected to the mounting head and is located between the mounting head and the concentration detector.

[0011] Wherein, the auxiliary device also includes a front sealing gasket and a rear sealing gasket, the front sealing gasket is detachably connected to the main pipe and is arranged on the front side of the main pipe; the rear sealing gasket is detachably connected to the main pipe and is located between the main pipe and the regulating ball valve.

[0012] The utility model relates to a device for controlling the combustion of nitrogen oxides based on multi-point online monitoring. Connecting flanges are provided on both sides of the main pipeline, which is convenient for direct installation on multiple points of the exhaust gas conveying pipeline. The regulating ball valve is installed on the output side of the main pipeline, and the positioning seat is installed on the main pipeline. The mounting head and the positioning seat are integrally formed and are threadedly connected to the concentration detector. The sealing components are respectively arranged on the main pipeline and the mounting head. When in use, the regulating ball valve is first installed on the output side of the main pipeline, and then the main pipeline and the regulating ball valve are directly arranged on multiple points of the exhaust gas conveying pipeline through the connecting flanges. The specific position can be set according to the length of the conveying pipeline according to actual usage. Then, when the exhaust gas is conveyed into the burner, the nitrogen oxide concentration in the gas can be detected by the concentration detectors at multiple points. After the regulating ball valve is adjusted, the conveying flow rate can be controlled, thereby realizing the nitrogen oxide concentration detection at multiple points in the exhaust gas conveying pipeline during the combustion treatment of nitrogen oxides, thereby improving the data collection points, improving the data accuracy, and facilitating the equipment parameter setting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention can be further described by way of non-limiting embodiments given in the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of the equipment for controlling the combustion of nitrogen oxides based on multi-point online monitoring according to the first embodiment of the utility model.

[0015] Figure 2 This is a cross-sectional view of the first sealing gasket according to the first embodiment of the present invention.

[0016] Figure 3 This is a structural schematic diagram of a threaded plug according to the first embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the overall structure of an apparatus for controlling combustion of nitrogen oxides based on multi-point online monitoring according to the second embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the installation position of the front sealing gasket of the second embodiment of the present utility model.

[0019] In the figure: 101-main pipeline, 102-connecting flange, 103-regulating ball valve, 104-positioning seat, 105-mounting head, 106-concentration detector, 107-threaded plug, 108-turntable, 109-first sealing gasket, 110-second sealing gasket, 201-front sealing gasket, 202-rear sealing gasket. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0021] Example 1:

[0022] like Figures 1 to 3 As shown, Figure 1 This is a schematic diagram of the overall structure of the equipment for controlling the combustion of nitrogen oxides based on multi-point online monitoring. Figure 2 is a cross-sectional view of the first sealing gasket 109, Figure 3 It is a structural diagram of the threaded plug 107. The utility model provides a device for controlling the combustion of nitrogen oxides based on multi-point online monitoring: comprising a main pipe 101 and an auxiliary device, wherein the main pipe 101 is provided with a connecting flange 102, and the auxiliary device comprises a regulating ball valve 103, a positioning seat 104, a mounting head 105, a concentration detector 106, a threaded plug 107 and a sealing assembly, wherein the sealing assembly comprises a first sealing gasket 109 and a second sealing gasket 110. Through the aforementioned scheme, it is possible to detect the concentration of nitrogen oxides at multiple points in the exhaust gas conveying pipeline during the combustion treatment of nitrogen oxides, thereby improving the data collection points, improving the data accuracy, and facilitating the setting of equipment parameters. It can be understood that the aforementioned scheme can detect the concentration of nitrogen oxides at multiple points in the exhaust gas conveying pipeline, thereby improving the data collection points, improving the data accuracy, and facilitating the setting of burner equipment parameters.

[0023] In this embodiment, the main pipe 101 is provided with connecting flanges 102 . The connecting flanges 102 are located on both sides of the main pipe 101 . The connecting flanges 102 facilitate the connection and installation of equipment.

[0024] Among them, the regulating ball valve 103 is detachably connected to the main pipe 101 and is located on the output side of the main pipe 101. The positioning seat 104 is fixedly connected to the main pipe 101 and is located on the main pipe 101. The mounting head 105 is integrally formed with the positioning seat 104 and is connected to the main pipe 101 and is located on the top of the positioning seat 104. The concentration detector 106 is threadedly connected to the mounting head 105 and is located on the side of the mounting head 105 close to the main pipe 101. The sealing components are respectively arranged on the main pipe 101 and the mounting head 105. The mounting flange on the input side of the regulating ball valve 103 is connected to the connecting flange 102 on the output side of the main pipe 101 through a screw nut, and its output side mounting flange is connected to the mounting flange on the segmented exhaust gas conveying pipe. The positioning seat 104 is installed on the main pipe 101 by bolts. The mounting head 105 and the positioning seat 104 are integrally formed, and the interior is a circular cavity with an internal threaded hole on the top of the circular cavity, which is convenient for the installation of the concentration detector 106. The sealing components are respectively arranged on the main pipe 101 and the mounting head 105 to improve the sealing performance of the equipment after installation and avoid gas leakage.

[0025] Secondly, the threaded plug 107 is threadedly connected to the mounting head 105 and is located at the top of the mounting head 105. It can be used to replace the concentration detector 106. The threaded plug 107 can be directly installed on the mounting head 105. When the equipment is installed on an external segmented conveying pipeline, if some points do not need to be tested, the concentration detector 106 can be removed and the threaded plug 107 can be installed to seal it. This ensures that the exhaust gas transmission is not affected when the points do not need to be tested. At the same time, when subsequent testing is required, it is only necessary to remove the threaded plug 107 and then install the concentration detector 106.

[0026] Then, a rotary disk 108 is fixedly installed on the top of the regulating ball valve 103. The rotary disk 108 facilitates the operation of the regulating ball valve 103.

[0027] Finally, the first sealing gasket 109 is detachably connected to the main pipe 101 and is positioned between the main pipe 101 and the positioning seat 104; the second sealing gasket 110 is detachably connected to the mounting head 105 and is positioned between the mounting head 105 and the concentration detector 106. A mounting groove is provided on the mounting surface of the positioning seat 104 at the top of the main pipe 101 to facilitate direct installation of the first sealing gasket 109. The first sealing gasket 109 is an O-shaped rubber gasket, which can seal the gap between the positioning seat 104 and the main pipe 101 after installation. A mounting groove is provided on the top end surface of the mounting head 105 to facilitate installation of the second sealing gasket 110. The second sealing gasket 110 is an O-shaped rubber gasket, which can seal the gap between the mounting head 105 and the concentration detector 106 after installation.

[0028] When the present invention is used in the combustion treatment of nitrogen oxides, the nitrogen oxide concentration detection can be carried out at multiple points in the exhaust gas conveying pipeline, the data collection points are improved, the data accuracy is improved, and the equipment parameter setting is facilitated. When in use, the regulating ball valve 103 is first installed on the output side of the main pipeline 101, and then the main pipeline 101 and the regulating ball valve 103 are directly installed through the connecting flange 102 to set the equipment at multiple points in the exhaust gas conveying pipeline. The specific position and the number of devices can be set according to the actual usage and the length of the conveying pipeline. Then, when the exhaust gas is conveyed into the burner, the nitrogen oxide concentration in the gas can be detected by the concentration detector 106 at multiple points. After the regulating ball valve 103 is adjusted, the conveying flow rate can be controlled, thereby realizing the combustion treatment of nitrogen oxides. The nitrogen oxide concentration detection can be carried out at multiple points in the exhaust gas conveying pipeline, the data collection points are improved, the data accuracy is improved, and the equipment parameter setting is facilitated.

[0029] Example 2:

[0030] like Figure 4 and Figure 5 As shown, Figure 4 This is a schematic diagram of the overall structure of the equipment for controlling the combustion of nitrogen oxides based on multi-point online monitoring. Figure 5 It is a schematic diagram of the installation position of the front sealing gasket 201. On the basis of the first embodiment, the utility model provides a device for controlling the combustion of nitrogen oxides based on multi-point online monitoring. The auxiliary device also includes a front sealing gasket 201 and a rear sealing gasket 202.

[0031] The front gasket 201 is detachably connected to the main pipe 101 and is disposed on the front side of the main pipe 101. The rear gasket 202 is detachably connected to the main pipe 101 and is located between the main pipe 101 and the regulating ball valve 103. Mounting grooves are provided on both the front and rear end surfaces of the main pipe 101. Both the front gasket 201 and the rear gasket 202 are O-shaped rubber gaskets that can be directly mounted in the mounting grooves.

[0032] In this embodiment, by arranging the front sealing gasket 201 and the rear sealing gasket 202 on both sides of the main pipeline 101, the sealing performance can be improved when the main pipeline 101 is connected to the regulating ball valve 103 or to an external segmented delivery pipeline.

[0033] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical principles disclosed herein shall be covered by the claims of the present invention.

Claims

1. A device for controlling the combustion of nitrogen oxides based on multi-point online monitoring, comprising a main pipeline, wherein the main pipeline is provided with connecting flanges, and the connecting flanges are located on both sides of the main pipeline, characterized in that: Also included are assistive devices; The auxiliary device includes a regulating ball valve, a positioning seat, a mounting head, a concentration detector and a sealing assembly. The regulating ball valve is detachably connected to the main pipeline and is located on the output side of the main pipeline. The positioning seat is fixedly connected to the main pipeline and is located on the main pipeline. The mounting head is integrally formed with the positioning seat and is connected to the main pipeline and is located on the top of the positioning seat. The concentration detector is threadedly connected to the mounting head and is located on the side of the mounting head close to the main pipeline. The sealing assembly is respectively arranged on the main pipeline and the mounting head.

2. The device for controlling combustion of nitrogen oxides based on multi-point online monitoring according to claim 1, characterized in that: The auxiliary device further comprises a threaded plug, which is threadedly connected to the mounting head and is located on the top of the mounting head and can be used to replace the concentration detector.

3. The device for controlling combustion of nitrogen oxides based on multi-point online monitoring according to claim 1, characterized in that: A turntable is fixedly installed on the top of the regulating ball valve.

4. The device for controlling combustion of nitrogen oxides based on multi-point online monitoring according to claim 1, characterized in that: The sealing assembly includes a first sealing gasket and a second sealing gasket. The first sealing gasket is detachably connected to the main pipe and is located between the main pipe and the positioning seat; the second sealing gasket is detachably connected to the mounting head and is located between the mounting head and the concentration detector.

5. The device for controlling combustion of nitrogen oxides based on multi-point online monitoring according to claim 1, characterized in that: The auxiliary device also includes a front sealing gasket and a rear sealing gasket. The front sealing gasket is detachably connected to the main pipe and is arranged on the front side of the main pipe; the rear sealing gasket is detachably connected to the main pipe and is located between the main pipe and the regulating ball valve.

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