Portable flue gas sampling device

Abstract

The utility model discloses a portable flue gas sampling device, relates to flue gas treatment technical field, the portable flue gas sampling device includes sampling box, pretreatment module and sampling module, the sampling box includes front panel and rear panel, the sampling box is provided with a plurality of interface, the pretreatment module is provided in the sampling box, and the sampling module is provided with a plurality of interface. The pretreatment device is used for pretreating flue gas; the sampling module is communicated with the pretreatment module, the sampling module is detachably arranged in the sampling box, the sampling module comprises a plurality of flue gas interfaces, and the plurality of flue gas interfaces are used for connecting a heat tracing pipe and an external analyzer. The portable flue gas sampling device provided by the utility model is used for adapting to sampling work under different working conditions, and meets the sampling requirements of different analysis instruments.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, and in particular to a portable flue gas sampling device. Background Technology

[0002] In flue gas pollutant emission monitoring systems, flue gas temperature and pressure are crucial factors affecting the accuracy of pollutant measurement results. However, analyzers often lack sampling capabilities. Furthermore, due to the different principles employed by various analyzers, their required injection conditions also differ. Some analyzers require sampling at room temperature and pressure, with low injection flow rates, and necessitate cold-drying pretreatment. Others can inject at high temperatures with relatively high flow rates, requiring continuous high-temperature injection. Additionally, limited by their measurement principles and injection conditions, some analyzers cannot measure humidity, and some cannot measure oxygen content, resulting in relatively limited functionality.

[0003] Currently, CEMS systems are designed according to operating conditions and analyzer sample introduction requirements, possessing comprehensive sampling and preprocessing functions. However, their complex design means that maintenance during malfunctions can be time-consuming, hindering continuous data monitoring. Emergency solutions are needed to ensure data continuity and integrity. Manual sampling combined with laboratory analysis requires significant manpower, generally leading to the deployment of portable integrated sampling and analysis devices. However, due to different measurement principles, monitoring data may contain biases. There is an urgent need for portable sampling systems compatible with online analytical instruments, allowing for rapid deployment and adaptation to online analytical instruments during maintenance or troubleshooting. Utility Model Content

[0004] The purpose of this invention is to provide a portable flue gas sampling device that can adapt to sampling work under different working conditions and meet the sampling requirements of different analytical instruments.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A portable flue gas sampling device, comprising:

[0007] A sampling box, including a front panel and a rear panel, is provided with multiple interfaces;

[0008] A pretreatment module, located inside the sampling box, is used to pretreat the flue gas;

[0009] The sampling module is connected to the preprocessing module and is detachably installed inside the sampling box. The sampling module includes multiple flue gas interfaces for connecting heat tracing pipes and external analyzers.

[0010] Optionally, the sampling module includes a sampling pump, and the front panel is provided with a sampling pump start / stop button electrically connected to the sampling pump. The sampling pump is used to drive the flue gas to flow inside the sampling box.

[0011] Optionally, the sampling pump inlet and the sampling pump outlet are respectively provided with a sampling pump inlet pressure measuring point and a sampling pump outlet pressure measuring point, which are used to detect the pressure of flue gas at the sampling pump inlet and the sampling pump outlet.

[0012] Optionally, the sampling module further includes a solenoid valve switching button and a pressure gauge disposed inside the sampling box. The solenoid valve switching button is used to switch between positive pressure gas path and negative pressure gas path, and the pressure gauge is used to display the pressure of flue gas.

[0013] Optionally, the sampling box further includes an oxygen module and a filter connected to the sampling module. The oxygen module is used to detect the humidity and oxygen content of the flue gas, and the filter is used to filter the flue gas entering the sampling module.

[0014] Optionally, the sampling box also integrates a standard gas flow meter module, which includes a total standard gas flow meter, a bypass standard gas flow meter, and a purge gas flow meter located on the front panel.

[0015] Optionally, the front panel is also provided with multiple temperature controllers, including a heat tracing pipe temperature controller, a filter temperature controller and a pretreatment module temperature controller, and the rear panel is also provided with a power socket and a power distribution socket, and the rear panel also includes a heat tracing pipe power socket and a network cable interface.

[0016] Optionally, the sampling box further includes a circuit control module and multiple solid-state relays. The circuit control module is electrically connected to the pretreatment module, the sampling module, and the standard gas flow meter module, respectively. The multiple solid-state relays are used to electrically connect to multiple temperature controllers.

[0017] Optionally, the sampling box is provided with multiple cooling fans on its side, and the multiple cooling fans are connected to the interior of the sampling box for heat dissipation of the interior of the sampling box.

[0018] Optionally, the sampling box further includes a guide rail and a pretreatment module sliding cover, the pretreatment module sliding cover being slidably disposed outside the sampling module, the sampling module being provided with multiple pretreatment module interfaces, and a flow control needle valve disposed between the multiple pretreatment module interfaces.

[0019] Compared with the prior art, the portable flue gas sampling device provided by this utility model has the ability to perform positive or negative pressure sampling, as well as high-temperature heating capability. Therefore, it can be applied to the sampling needs of different types of analyzers. When the sampling system of the fixed online system fails, it can replace the sampling system to perform flue gas sampling. This device can also maintain 24-hour uninterrupted operation for a long time. When the sampling system of the fixed source online system fails, the portable flue gas sampling device provided by this application can be used as a backup sampling device in the fixed source online system to avoid data loss due to the maintenance of the fixed source sampling system. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a front view schematic diagram of the portable flue gas sampling device provided in the embodiments of this application;

[0022] Figure 2 This is a rear view schematic diagram of the portable flue gas sampling device provided in the embodiments of this application;

[0023] Figure 3 This is a side view schematic diagram of the portable flue gas sampling device provided in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the internal structure of the portable flue gas sampling device provided in the embodiments of this application;

[0025] Figure 5 This is a schematic diagram of another internal part of the portable flue gas sampling device provided in the embodiments of this application.

[0026] Figure label:

[0027] 100-Sampling box; 1-Sampling box handle; 2-Heat tracing pipe temperature controller; 3-Filter temperature controller; 4-Pretreatment module temperature controller; 5-Sampling pump start / stop button; 6-Digital pressure gauge; 7-Solenoid valve switching button; 8-Total standard gas flow meter; 9-Bypass standard gas flow meter; 10-Purge gas flow meter; 11-Standard gas inlet; 12-Purge gas inlet; 13-Bypass standard gas outlet; 14-Purge gas outlet; 15-Standard gas outlet; 16-Front panel; 17-Flue gas bypass; 18-Sampling module; 19-Power socket; 20-Rear panel; 2 1-Heat tracing pipe power socket; 22-First power distribution socket; 23-Network cable interface; 24-Second power distribution socket; 25-Fixing screw; 26-Pretreatment module handle; 27-Cooling fan; 28-Sampling pump; 29-Sampling pump outlet pressure test point; 30-Guide rail; 31-Sampling pump inlet pressure test point; 32-Pretreatment module sliding cover; 33-First pretreatment module interface; 34-Flow control needle valve; 35-Second pretreatment module interface; 36-Circuit control module; 37-Solid-state relay; 38-Oxygen module; 39-Filter. Detailed Implementation

[0028] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Example 1:

[0034] Please see Figures 1-5 This application provides a portable flue gas sampling device, including a sampling box 100, a pretreatment module, a sampling module 18, and a circuit control module 36. The sampling box 100 includes a front panel 16 and a rear panel 20, and has multiple interfaces. The pretreatment module is disposed inside the sampling box 100 and is used to pretreat the flue gas. The sampling module 18 is connected to the pretreatment module and is detachably disposed inside the sampling box 100. The sampling module 18 includes multiple flue gas interfaces for connecting a heat tracing pipe and an external analyzer. The circuit control module 36 is disposed inside the sampling box 100 and is used to control the electrical components inside the sampling box 100.

[0035] It should be noted that a sampling box handle 1 is provided on the top of the sampling box 100 for easy handling by the operator. The sampling box handle 1 makes it easy for the operator to carry or transport the portable flue gas sampling device provided in this application.

[0036] In this application, the sampling module 18 includes a sampling pump 28, and the front panel 16 is provided with a sampling pump start / stop button 5 electrically connected to the sampling pump 28. The sampling pump 28 is used to drive the flue gas to flow inside the sampling box 100.

[0037] In addition, sampling pump 28 is equipped with sampling pump inlet pressure measuring point 31 and sampling pump outlet pressure measuring point 29 respectively. Sampling pump inlet pressure measuring point 31 and sampling pump outlet pressure measuring point 29 are used to detect the pressure of flue gas at sampling pump 28 inlet and sampling pump 28 outlet.

[0038] In one embodiment of this application, the sampling module 18 further includes a solenoid valve switching button 7 and a pressure gauge disposed inside the sampling box 100. The solenoid valve switching button 7 is used to switch between positive pressure gas path and negative pressure gas path, and the pressure gauge is used to display the pressure of flue gas.

[0039] In this application, the sampling box 100 also includes an oxygen module 38 and a filter 39 connected to the sampling module 18. The oxygen module 38 is used to detect the humidity and oxygen content of the flue gas, and the filter 39 is used to filter the flue gas entering the sampling module 18.

[0040] In one embodiment of this application, the sampling box 100 also integrates a standard gas flow meter module, which includes a main standard gas flow meter 8, a bypass standard gas flow meter 9 and a purge gas flow meter 10 disposed on the front panel 16.

[0041] The standard gas flow meter module also includes a standard gas inlet 11, a standard gas outlet 15, a bypass standard gas outlet 13, a purge gas inlet 12, and a purge gas outlet 14 disposed on the front panel.

[0042] In this application, the front panel 16 is also provided with multiple temperature controllers, including a heat tracing pipe temperature controller 2, a filter temperature controller 3, and a pretreatment module temperature controller 4. The rear panel 20 is also provided with a power socket 19 and a power distribution socket. The rear panel 20 also includes a heat tracing pipe power socket 21 and a network cable interface 23. Here, the power distribution socket includes a first power distribution socket 22 and a second power distribution socket 24 to accommodate different power supply needs.

[0043] The sampling box 100 also includes a circuit control module 36 and multiple solid-state relays 37. The circuit control module 36 is electrically connected to the preprocessing module and the sampling module 18, respectively, and the multiple solid-state relays 37 are used to be electrically connected to multiple temperature controllers.

[0044] Please see Figure 3 The sampling box 100 is provided with multiple cooling fans 27 on its side. The multiple cooling fans 27 are connected to the interior of the sampling box 100 and are used to dissipate heat from the interior of the sampling box 100.

[0045] In this application, the sampling box 100 also includes a guide rail 30 and a pretreatment module sliding cover 32. The pretreatment module sliding cover 32 is slidably disposed outside the sampling module 18. The bottom of the pretreatment module sliding cover 32 is provided with multiple pretreatment module interfaces and a flow control needle valve 34 disposed between the multiple pretreatment module interfaces. Here, the pretreatment module interfaces include a first pretreatment module interface 33 and a second pretreatment module interface 35, which are used for flue gas path connection under different sampling requirements.

[0046] Specifically, the sampling pump 28 of the portable flue gas sampling device provided in this application is equipped with a sampling pump start / stop button 5, which can automatically control whether sampling is performed. The sampling pump 28 can be automatically started according to the needs of the site environment, or it can be quickly stopped in case of emergencies to protect the system. The sampling module 18 inside the device is a detachable movable structure, located inside the sampling box 100, and fixed to the rear panel 20 by four fixing screws 25, ensuring a firm and reliable installation. A guide rail 30 is provided inside the box to limit displacement and provide fixation. During use, the sampling module 18 can be pulled out of the device as a whole, and the built-in filter 39 can be replaced by sliding off the pretreatment module cover 32. The front panel 16 of the portable flue gas sampling device provided in this application integrates a standard gas flow meter module. Depending on different needs, a flow meter can be connected to achieve direct standard gas flow to the analyzer and full system standardization. Furthermore, a purge gas flow meter 10 is provided for Fourier transform infrared analyzers requiring purge gas to control the purge gas flow rate. Meanwhile, the rear panel 20 of this device is equipped with two 220V, 2000W power sockets, which can provide power for up to two devices, reducing the need for additional power sockets.

[0047] It should be noted that, at the same time, because the flue gas sampling device provided in this application has good compatibility, it is only necessary to connect a sampling probe and a heat tracing pipeline to the sampling inlet, and connect the sampling outlet to the condenser and then to the analyzer or directly to the analyzer, so that a portable flue gas sampling device can be quickly assembled.

[0048] In this application, the portable flue gas sampling device has the ability to perform positive or negative pressure sampling, as well as high-temperature heating capability. Therefore, it can be applied to the sampling needs of different types of analyzers. When the sampling system of the fixed online system fails, it can replace the sampling system to perform flue gas sampling. This device can also maintain 24-hour uninterrupted operation for a long time. When the sampling system of the fixed source online system fails, the portable flue gas sampling device provided in this application can be used as a backup sampling device in the fixed source online system to avoid data loss due to the maintenance of the fixed source sampling system.

[0049] The portable flue gas sampling device provided in this application is powered by 220V and equipped with a power socket 19 containing a fuse and a switch. It can also provide two 220V power supplies through the first power distribution socket 22 and the second power distribution socket 24, which can meet a maximum power of 2000W. When the device is powered on, the high-temperature sampling module 18 inside the device will automatically start heating according to the set temperature. The device is equipped with a PID self-tuning temperature controller, and the heating temperature can be adjusted by the filter temperature controller 3 and the pretreatment module temperature controller 4. In addition, the device also supports temperature control by a heat tracing pipe. The heating wire of the heat tracing pipe can be connected to the heat tracing pipe power socket 21 on the rear panel 20, and its heating temperature can be set by the heat tracing pipe temperature controller 2. By default, the heating temperature of the device is set to 180°. When the temperature controller shows that the heating temperature has reached 180°, it means that the flue gas treatment device has been preheated. The sampling pump start / stop button 5 can be pressed to start the high-temperature sampling pump 28.

[0050] When high-temperature sampling is not required, such as when using the cold-drying gas path, heating can be stopped and a condenser can be added after the flue gas interface. In this way, it is possible to ensure that two different analyzers with different sampling requirements can be used in the same field. For example, the ultraviolet analyzer uses the cold-drying micro-positive pressure sampling method, while the portable Fourier transform infrared analyzer uses the high-temperature hot-humidity negative pressure sampling method, which is convenient to adapt to flue gas sampling work under different requirements.

[0051] The front panel 16 of the flue gas treatment device provided in this application integrates a standard gas flow meter module and a digital pressure gauge 6. After the portable sampling system has finished preheating, the standard gas flow rate can be adjusted through the standard gas flow meter module integrated on the front panel 16. When the analyzer needs to be directly calibrated with standard gas, the standard gas tube can be connected to the standard gas inlet 11, and the analyzer inlet can be connected to the standard gas outlet 15. The bypass standard gas flow meter 9 is then turned off. After the analyzer has finished preheating, the total standard gas flow meter 8 can be adjusted to control the flow rate, thereby verifying and calibrating the analyzer's direct standard gas supply, such as in portable sampling systems. If the system requires full-system calibration, the calibration gas outlet 15 can be connected to the inlet of the portable sampling system. For positive pressure calibration, the bypass calibration gas flow meter 9 should be closed. For negative pressure calibration, the bypass calibration gas flow meter 9 should be opened, and the bypass flow rate should be automatically controlled. The gas should be discharged through the flue gas bypass 17 to achieve calibration under negative pressure. When the analyzer uses the Fourier transform infrared principle and the interferometer needs to be purged, the purge gas can be connected to the purge gas inlet 12, and the purge gas outlet 14 can be connected to the analyzer's purge gas interface. The purge gas flow rate can be controlled by adjusting the purge gas flow meter 10.

[0052] When the flue gas treatment device provided in this application is used for positive pressure gas path connection, the probe heating pipe is connected to the treatment module interface, and the instrument heating pipe is connected to the pretreatment module interface. At the same time, the solenoid valve switching button 7 is pressed to switch the pressure measuring gas path to the positive pressure gas path, and the flow control needle valve 34 is adjusted to control the flue gas flow rate entering the analyzer. When this device is used for negative pressure gas path, the analyzer outlet is connected to the pretreatment module interface, and the pretreatment module interface is either empty or connected to the tail gas treatment device. At the same time, the solenoid valve switching button 7 is closed to switch the pressure measuring gas path to the negative pressure gas path. The analyzer outlet is connected to the treatment module interface, and the pretreatment module interface is either empty or connected to the tail gas treatment device. At the same time, the solenoid valve switching button 7 is closed to switch the pressure measuring gas path to the negative pressure gas path. The flue gas treatment device provided in this application is equipped with a digital display pressure gauge 6, which has a signal transmission function. Through the protocol converter on the circuit control module 36, the signal is transmitted to the external network cable port on the rear panel 20, and the signal can be transmitted to the analyzer for pressure compensation.

[0053] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A portable flue gas sampling device, characterized in that, The utility model relates to a sampling box, including front panel and back panel, be provided with a plurality of interfaces on the sampling box, the pretreatment module is set in the sampling box for the pretreatment of flue gas, the sampling module is communicated with the pretreatment module, the sampling module is detachably arranged in the inside of the sampling box, and the sampling module includes a plurality of flue gas interfaces, and a plurality of the flue gas interfaces are used for connecting heat tracing pipe and external analyzer. The sampling module includes a sampling pump, the front panel is provided with a sampling pump start-stop button electrically connected with the sampling pump, and the sampling pump is used to drive the flow of flue gas in the sampling box. The sampling pump inlet and the sampling pump outlet are respectively provided with a sampling pump inlet pressure measuring point and a sampling pump outlet pressure measuring point for detecting the pressure of flue gas at the sampling pump inlet and the sampling pump outlet. The sampling module further includes an electromagnetic valve switching button and a pressure gauge arranged inside the sampling box, the electromagnetic valve switching button is used to switch the positive pressure gas circuit and the negative pressure gas circuit, and the pressure gauge is used to display the pressure of flue gas.

2. The portable flue gas sampling device of claim 1, wherein, The sampling box further includes an oxygen module and a filter connected with the sampling module, the oxygen module is used to detect the humidity and oxygen content of flue gas, and the filter is used to filter the flue gas entering the sampling module.

3. The portable flue gas sampling device of claim 2, wherein, The sampling box further integrates a standard gas flow meter module, the standard gas flow meter module includes a total standard gas flow meter, a bypass standard gas flow meter and a purge gas flow meter arranged on the front panel.

4. The portable flue gas sampling device of claim 1, wherein, The front panel further includes a plurality of temperature controllers, including a heat tracing pipe temperature controller, a filter temperature controller and a pretreatment module temperature controller, the back panel further includes a power socket and a power distribution socket, and the back panel further includes a heat tracing pipe power socket and a network interface.

5. The portable flue gas sampling device of claim 1, wherein, The sampling box further includes a circuit control module and a plurality of solid-state relays, the circuit control module is electrically connected with the pretreatment module, the sampling module and the standard gas flow meter module, and the plurality of solid-state relays are used to be electrically connected with the plurality of temperature controllers.

6. The portable flue gas sampling device of claim 5, wherein, The side of the sampling box is provided with a plurality of cooling fans, the plurality of cooling fans are communicated with the inside of the sampling box, and are used for cooling the inside of the sampling box.

7. The portable flue gas sampling device of claim 6, wherein, The sampling box further includes a guide rail and a pretreatment module sliding cover, the pretreatment module sliding cover is slidably arranged outside the sampling module, a plurality of pretreatment module interfaces are arranged outside the sampling module, and a flow control needle valve is arranged between the plurality of pretreatment module interfaces.

8. The portable flue gas sampling device of claim 7, wherein, ​ 9. The portable flue gas sampling device of claim 1, wherein, ​ 10. The portable flue gas sampling device of claim 1, wherein, ​

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