Flue gas pretreatment device for flue gas detection

Abstract

The utility model discloses a flue gas pretreatment device for flue gas detection belongs to flue gas detection field. Flue gas pretreatment device for flue gas detection, including flue gas pipeline, the inside installation of condenser pipe of flue gas pipeline is provided with moving mechanism at the outside of flue gas pipeline, is provided with fixed plate on moving mechanism, installs the fixed frame on fixed plate, installs a plurality of fixed rings at the end of fixed frame, is rotatably connected with the scraping ring on fixed ring, and the sliding connection of fixed ring and condenser pipe, and the outer surface of condenser pipe is provided with the guide groove. The utility model solves the current flue gas pretreatment device and cannot clean the water drop that condenses on the condenser pipe, leads to the problem that the water removal effect of flue gas is poor, the utility model discloses through setting movable scraping ring at the outside of condenser pipe, can effectively remove the water drop that condenses on the pipe wall, significantly improves the water removal efficiency of flue gas pretreatment, avoids the influence of condensation effect of water drop long -term adhesion.

Description

Technical Field

[0001] This utility model relates to the field of flue gas detection, specifically to a flue gas pretreatment device for flue gas detection. Background Technology

[0002] Flue gas pretreatment devices are used to process samples before flue gas detection. They are mainly used to remove interfering substances (such as moisture, particulate matter, acidic gases, etc.) and adjust flue gas parameters (such as temperature and flow rate). Its core components include a filtration and dust removal unit, a condensation and dehumidification system, a gas scrubbing module, and a flow regulation device. It can effectively protect subsequent testing instruments, improve data accuracy, and is suitable for environmental monitoring, industrial emission detection, and other fields to ensure compliance with national emission standards.

[0003] According to the search, announcement number CN223244094U discloses a flue gas pretreatment device for continuous emission detection of flue gas. The inner inlet pipes installed at both ends of the duct fan of the pretreatment device can be connected to the existing flue gas discharge filter pipe and the detection pipe of the gas detector by means of threaded ring walls. After the flue gas is condensed at the inner inlet pipe, it is sent to the detection pipe of the gas detector for continuous detection. When the flue gas after being condensed and drained enters the gas detector for emission detection, the gas detector is not easily affected by water vapor, thus realizing the flue gas drainage pretreatment during continuous emission detection of flue gas. However, this utility model cannot clean the water droplets condensed on the condenser pipe during use. After long-term use, a large number of water droplets will be attached to the surface of the condenser pipe, resulting in poor water removal effect on the flue gas.

[0004] In summary, to improve the water removal efficiency and long-term operational stability of flue gas pretreatment devices, it is necessary to solve the problem of water droplets condensing on the surface of condenser tubes not being automatically cleaned, so that the moisture in the flue gas can be efficiently condensed and smoothly discharged, preventing water vapor from being carried back into subsequent treatment stages by the airflow, thereby ensuring the accuracy and reliability of the flue gas pretreatment process. Utility Model Content

[0005] The purpose of this invention is to provide a flue gas pretreatment device for flue gas detection. By setting a movable scraper ring on the outside of the condenser tube, water droplets on the surface of the condenser tube can be removed over a large area, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flue gas pretreatment device for flue gas detection, comprising a flue gas duct, a condenser tube installed inside the flue gas duct, a moving mechanism provided on the outside of the flue gas duct, a fixed plate provided on the moving mechanism, a fixed frame installed on the fixed plate, multiple fixed rings installed at the end of the fixed frame, a scraper ring rotatably connected to the fixed ring, the fixed ring being slidably connected to the condenser tube, a guide groove being provided on the outer surface of the condenser tube, a protrusion being fixed on the inner side of the scraper ring, the protrusion cooperating with the guide groove, a connecting mechanism for connecting to an external exhaust duct being provided at the end of the flue gas duct, and a drainage component being provided at the bottom of the flue gas duct.

[0007] Preferably, the moving mechanism includes a lateral moving assembly disposed on the flue gas duct and a driving assembly disposed on the lateral moving assembly. The driving assembly is used to transmit torque to the lateral moving assembly, and the lateral moving assembly is used to drive the fixed plate to move.

[0008] Preferably, the transverse component includes a mounting housing fixed to the flue gas duct, a lead screw disposed inside the mounting housing, and a movable seat threaded through and connected to the outside of the lead screw. The lead screw is rotatably connected to the mounting housing, and the movable seat is fixedly connected to the fixed plate.

[0009] Preferably, the drive assembly includes a driven gear fixed to the end of the lead screw, a drive motor fixed to the mounting housing, and a driving gear fixed to the output end of the drive motor. The driving gear meshes with the driven gear, and the drive motor is used to drive the driving gear to rotate.

[0010] Preferably, the connection mechanism includes a diversion component disposed at the end of the flue gas duct and a fixing component disposed on the diversion component. The diversion component is used to divert the flue gas, and the fixing component is used to fix the diversion component.

[0011] Preferably, the diversion assembly includes a connector fixed to the end of the flue gas duct, a mating sleeve sleeved on the outside of the connector, a flange fixed to the outside of the mating sleeve, a fixing plate fixed to the inside of the mating sleeve, and a diversion pipe installed on the fixing plate. The mating sleeve is fixedly connected to the external flue gas duct through the flange.

[0012] Preferably, the fixing component includes an external thread formed on the outside of the connector and the mating sleeve, and a threaded sleeve threadedly connected to the outside of the connector, wherein the mating sleeve and the connector are connected by the threaded sleeve.

[0013] Preferably, the drainage assembly includes a drain shell fixed to the bottom of the flue gas duct, a drain pipe fixed to the bottom of the drain shell, and a ball valve installed on the drain pipe. The drain shell is funnel-shaped.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention effectively removes condensed water droplets from the condenser tube by installing a movable scraper ring on the outside of the tube, significantly improving the water removal efficiency of flue gas pretreatment. The scraper ring covers most of the condenser tube surface during movement, promptly removing accumulated water film and preventing prolonged water droplet adhesion that could affect condensation. This design not only reduces interference from secondary evaporation or backflow of moisture but also keeps the condenser tube surface dry, ensuring efficient separation and smooth discharge of moisture from the flue gas. Furthermore, regular cleaning of water droplets prevents microbial growth and dirt accumulation, extending equipment lifespan and maintaining stable condensation performance, making the flue gas pretreatment process more precise and reliable, and meeting stringent environmental protection requirements. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the condenser tube of this utility model;

[0018] Figure 3 This is a half-sectional three-dimensional structural diagram of the connecting mechanism of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the diversion tube of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the present invention viewed from below.

[0021] In the diagram: 1. Flue gas duct; 2. Condenser pipe; 31. Mounting housing; 32. Lead screw; 33. Moving seat; 34. Driven gear; 35. Drive motor; 36. Drive gear; 4. Fixing plate; 5. Fixing bracket; 6. Fixing ring; 7. Scraper ring; 8. Guide groove; 91. Connector; 92. Butt sleeve; 93. Flange; 94. Fixing plate; 95. Diverter pipe; 96. External thread; 97. Threaded sleeve; 101. Drain housing; 102. Drain pipe; 103. Ball valve. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments.

[0023] Refer to the instruction manual appendix Figures 1 to 5A flue gas pretreatment device for flue gas detection includes a flue gas duct 1, a condenser tube 2 installed inside the flue gas duct 1, a moving mechanism on the outside of the flue gas duct 1, a fixed plate 4 on the moving mechanism, a fixed frame 5 on the fixed plate 4, multiple fixed rings 6 at the end of the fixed frame 5, a scraper ring 7 rotatably connected to the fixed ring 6, the fixed ring 6 being slidably connected to the condenser tube 2, a guide groove 8 on the outer surface of the condenser tube 2, a protrusion fixed on the inner side of the scraper ring 7, the protrusion cooperating with the guide groove 8, a connection mechanism for connecting to an external exhaust duct at the end of the flue gas duct 1, and a drainage component at the bottom of the flue gas duct 1.

[0024] It should be noted that the cooperation between the guide groove 8 and the inner protrusion of the scraper ring 7 allows the scraper ring 7 to move while moving with the fixed plate 4, and the protrusion moves along the trajectory of the guide groove 8, forcing the scraper ring 7 to rotate. This compound motion realizes the spiral scraping of the surface of the condenser tube 2 by the scraper ring 7, which significantly improves the efficiency of water droplet removal and the cleaning coverage.

[0025] Refer to the instruction manual appendix Figure 1 and Figure 2 The moving mechanism includes a transverse moving assembly disposed on the flue gas duct 1 and a drive assembly disposed on the transverse moving assembly. The drive assembly is used to transmit torque to the transverse moving assembly, and the transverse moving assembly is used to drive the fixed plate 4 to move.

[0026] It should be noted that the moving mechanism drives the fixed plate 4 to reciprocate through the transverse component, which in turn causes the scraper ring 7 to cover the surface of the condenser tube 2, ensuring that water droplets are thoroughly cleaned.

[0027] Refer to the instruction manual appendix Figure 1 and Figure 2 The transverse component includes a mounting housing 31 fixed on the flue gas duct 1, a lead screw 32 disposed inside the mounting housing 31, and a movable seat 33 threadedly connected to the outside of the lead screw 32. The lead screw 32 is rotatably connected to the mounting housing 31, and the movable seat 33 is fixedly connected to the fixed plate 4.

[0028] It should be noted that the outer side of the movable seat 33 slides against the inner wall of the mounting shell 31, so that when the lead screw 32 rotates, it can drive the movable seat 33, which is threaded with it, to move, providing a precise and controllable movement path for the fixed plate 4.

[0029] Refer to the instruction manual appendix Figure 2 The drive assembly includes a driven gear 34 fixed to the end of the lead screw 32, a drive motor 35 fixed to the mounting housing 31, and a drive gear 36 fixed to the output end of the drive motor 35. The drive gear 36 meshes with the driven gear 34, and the drive motor 35 is used to drive the drive gear 36 to rotate.

[0030] It should be noted that the drive motor 35 can drive the drive gear 36 to rotate during operation, and through the meshing transmission with the driven gear 34, it can drive the lead screw 32 to rotate.

[0031] Refer to the instruction manual appendix Figures 1 to 5 The connecting mechanism includes a diversion component disposed at the end of the flue gas duct 1 and a fixing component disposed on the diversion component. The diversion component is used to divert the flue gas, and the fixing component is used to fix the diversion component.

[0032] It should be noted that the connection mechanism evenly introduces external flue gas through the diversion component and uses the fixing component to ensure the sealing and stability of the pipeline connection.

[0033] Refer to the instruction manual appendix Figures 1 to 5 The diversion assembly includes a connector 91 fixed at the end of the flue gas duct 1, a mating sleeve 92 sleeved on the outside of the connector 91, a flange 93 fixed on the outside of the mating sleeve 92, a fixing plate 94 fixed on the inside of the mating sleeve 92, and a diversion pipe 95 installed on the fixing plate 94. The mating sleeve 92 is fixedly connected to the external flue gas duct through the flange 93.

[0034] It should be noted that the flue gas flow is dispersed by the diversion pipe 95 of the fixed plate 94, and the flange 93 is used to achieve a tight connection with the external pipeline to avoid gas leakage.

[0035] Refer to the instruction manual appendix Figures 1 to 5 The fixing component includes an external thread 96 formed on the outside of the connector 91 and the mating sleeve 92, and a threaded sleeve 97 threadedly connected to the outside of the connector 91. The mating sleeve 92 and the connector 91 are connected through the threaded sleeve 97.

[0036] It should be noted that the screwing action of the threaded sleeve 97 locks the connector 91 and the mating sleeve 92, ensuring reliable fixation of the mating sleeve 92 and the connector 91 under high pressure.

[0037] Refer to the instruction manual appendix Figure 5 The drainage assembly includes a diversion shell 101 fixed to the bottom of the flue gas duct 1, a drain pipe 102 fixed to the bottom of the diversion shell 101, and a ball valve 103 installed on the drain pipe 102. The diversion shell 101 is funnel-shaped.

[0038] It should be noted that the condensate is collected by the funnel-shaped drain shell 101 and discharged through the drain pipe 102. The ball valve 103 can flexibly control the opening and closing of the drain pipe 102.

[0039] Working principle: After the external flue gas enters the diversion pipe 95 through the connector 91 and diffuses evenly, it flows over the surface of the condenser pipe 2. When the gas is cooled, the moisture in the flue gas condenses into water droplets and adheres to the pipe wall. After running for a period of time, the external controller starts the drive motor 35 to drive the drive gear 36 to rotate. The driven gear 34 drives the lead screw 32 to rotate, causing the threaded movable seat 33 to move linearly along the inner wall of the mounting shell 31, thereby pushing the fixed plate 4 and the fixed frame 5 to move as a whole. When the fixed ring 6 moves with the fixed frame 5, the protrusion on the inner side of the scraper ring 7 is constrained by the guide groove 8 on the surface of the condenser pipe 2, forcing the scraper ring 7 to rotate continuously while translating, forming a spiral scraping trajectory, which efficiently removes water droplets from the pipe wall. The scraped water droplets and condensate are collected in the funnel-shaped drainage shell 101 and discharged through the drain pipe 102 by the ball valve 103, while the dry flue gas continues to flow to the subsequent detection unit.

[0040] It should be noted that the control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Therefore, this utility model will not explain the control method and circuit connection in detail. In this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A flue gas pretreatment device for flue gas detection, comprising a flue gas duct (1), characterized in that, A condenser pipe (2) is installed inside the flue gas duct (1). A moving mechanism is provided on the outside of the flue gas duct (1). A fixed plate (4) is provided on the moving mechanism. A fixed frame (5) is installed on the fixed plate (4). Multiple fixed rings (6) are installed at the end of the fixed frame (5). A scraper ring (7) is rotatably connected to the fixed ring (6). The fixed ring (6) is slidably connected to the condenser pipe (2). A guide groove (8) is opened on the outer surface of the condenser pipe (2). A protrusion is fixed on the inner side of the scraper ring (7). The protrusion cooperates with the guide groove (8). A connection mechanism for connecting to an external exhaust duct is provided at the end of the flue gas duct (1). A drainage component is provided at the bottom of the flue gas duct (1).

2. The flue gas pretreatment device for flue gas detection according to claim 1, characterized in that, The moving mechanism includes a transverse component mounted on the flue gas duct (1) and a drive component mounted on the transverse component. The drive component is used to transmit torque to the transverse component, and the transverse component is used to move the fixed plate (4).

3. The flue gas pretreatment device for flue gas detection according to claim 2, characterized in that, The transverse assembly includes a mounting housing (31) fixed on the flue gas duct (1), a lead screw (32) disposed inside the mounting housing (31), and a movable seat (33) threaded through and connected to the outside of the lead screw (32). The lead screw (32) is rotatably connected to the mounting housing (31), and the movable seat (33) is fixedly connected to the fixed plate (4).

4. The flue gas pretreatment device for flue gas detection according to claim 3, characterized in that, The drive assembly includes a driven gear (34) fixed to the end of the lead screw (32), a drive motor (35) fixed to the mounting housing (31), and a drive gear (36) fixed to the output end of the drive motor (35). The drive gear (36) meshes with the driven gear (34), and the drive motor (35) is used to drive the drive gear (36) to rotate.

5. The flue gas pretreatment device for flue gas detection according to claim 1, characterized in that, The connection mechanism includes a diversion component disposed at the end of the flue gas duct (1) and a fixing component disposed on the diversion component. The diversion component is used to divert the flue gas, and the fixing component is used to fix the diversion component.

6. The flue gas pretreatment device for flue gas detection according to claim 5, characterized in that, The diversion assembly includes a connector (91) fixed at the end of the flue gas duct (1), a mating sleeve (92) sleeved on the outside of the connector (91), a flange (93) fixed on the outside of the mating sleeve (92), a fixing plate (94) fixed on the inside of the mating sleeve (92), and a diversion pipe (95) installed on the fixing plate (94). The mating sleeve (92) is fixedly connected to the external flue gas duct through the flange (93).

7. The flue gas pretreatment device for flue gas detection according to claim 6, characterized in that, The fixing component includes an external thread (96) on the outside of the connector (91) and the mating sleeve (92) and a threaded sleeve (97) threaded on the outside of the connector (91), and the mating sleeve (92) and the connector (91) are connected by the threaded sleeve (97).

8. The flue gas pretreatment device for flue gas detection according to claim 1, characterized in that, The drainage assembly includes a drain shell (101) fixed to the bottom of the flue gas duct (1), a drain pipe (102) fixed to the bottom of the drain shell (101), and a ball valve (103) installed on the drain pipe (102). The drain shell (101) is funnel-shaped.

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