Sampler for collecting flue gas
The flue gas collector, designed with high-temperature resistant materials and a backflushing system, solves the problem of inaccurate flue gas sampling in high-temperature environments around boilers, achieving efficient and stable flue gas sampling and equipment operation.
Patent Information
- Application Number
- CN202423305162.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Accurate flue gas sampling is difficult to perform in the high-temperature environment around the boiler, resulting in inaccurate data. Furthermore, loose connections can lead to sampling errors and equipment malfunctions.
A flue gas collector was designed, comprising a sampling tube, a pre-filter, a filter screen, a backflush inlet, a heat tracing pipeline, and the sampler body. It uses high-temperature resistant materials and is combined with an adjustable temperature controller and a backflush system to ensure sampling accuracy and equipment stability.
It improves the accuracy of flue gas sampling and the stability of the equipment, reduces maintenance costs and downtime, extends equipment life, and reduces sampling errors and malfunctions.
Smart Images
Figure CN223856810U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to flue gas sampling technical field, concretely is a kind of sampler for flue gas collection. BACKGROUND
[0002] Carbonaceous fuel incomplete combustion, combustion special material etc. in boiler can produce carbon monoxide, sulfur dioxide, nitrogen oxide and smoke dust etc. pollutants, direct emission can cause pollution to atmosphere, so the flue gas generated by boiler is handled by external emission, but boiler still releases a small amount of toxic and harmful flue gas due to not tight sealing around, to cause pollution to environment and damage to worker's body, so the content of gaseous pollutant around boiler is collected by flue gas collector at irregular intervals, to detect whether in safe concentration range.
[0003] Flue gas collector is to collect and store gas, facilitate detection of collected gas in later period, but due to the temperature around boiler is very high when working, staff is difficult to collect gas at close range, to affect the accuracy of collected data. UTILITARY MODEL
[0004] The utility model aims at providing a kind of sampler for flue gas collection to solve the problems presented in the above background.
[0005] In order to solve the above technical problems, the utility model provides the following technical scheme: a kind of sampler for flue gas collection, including sampling pipe, prefilter, filter screen, blowback gas pipe mouth, heat tracing pipeline and sampler body, one end of the sampling pipe is placed in flue, the one end of sampling pipe is screw thread connection with prefilter placed in flue, the filter screen is placed in prefilter, and dismounting assembly is arranged in prefilter, the end of sampling pipe away from prefilter is connected with sampler body, the upper end of sampler body is equipped with pipeline inlet, one end of heat tracing pipeline passes through pipeline inlet and is placed in sampling pipe with sampler body.
[0006] In a preferred embodiment: one end of the sampling pipe is fixedly connected with connecting flange, the connecting flange is fixedly connected with sampler body by fastening bolt one, and sealing gasket one is arranged between connecting flange and sampler body.
[0007] In a preferred embodiment: the prefilter includes a square front pipe and a circular rear pipe, the filter screen is arranged in the front pipe, the rear pipe is screw thread connected with one end of the sampling pipe, and the mesh aperture of the filter screen is 2 μm.
[0008] In one preferred implementation: the disassembly assembly includes two symmetrically distributed fixed plates, opening one, opening two, clamping block one, clamping block two and damping shaft, both ends of the filter screen are fixedly connected with the fixed plate, the fixed plate slides in the front pipe through the limiting mechanism, the inner wall of the fixed plate is provided with opening one, a plurality of equidistantly distributed clamping block one is fixedly connected in the opening one, the two end walls of the front pipe are provided with opening two, the opening two is movably provided with clamping block two, the upper end of the clamping block two is fixedly connected with the damping shaft, the opening two and the clamping block two are consistent in shape, and the clamping block one is provided with a clamping groove.
[0009] In one preferred implementation: the limiting mechanism includes a T-shaped limiting groove and a T-shaped limiting block, the limiting block is fixedly connected with one end of the fixed plate, the limiting groove is provided on the inner wall of the front pipe, and the limiting block slides in the limiting groove.
[0010] In one preferred implementation: the upper end of the sampler body is also provided with a power line inlet and a signal line inlet, the outer wall of the flue is fixedly connected with a bottom plate through the fastening bolt three, one end of the bottom plate is fixedly connected with a sleeve, the end, away from the bottom plate, of the sleeve is fixedly connected with a pair of mounting flanges, the pair of mounting flanges and the connecting flange are fixedly connected through the fastening bolt two, and the pair of mounting flanges and the connecting flange are provided with a sealing gasket two.
[0011] Compared with the prior art, the utility model has the advantages that:
[0012] The utility model discloses a sampler body, prefilter, filter screen, blowback pipe, heat tracing pipeline and the setting of sampling pipe, through reasonable structure design, such as effective filtration and blowback system, can accurately, stably collect the flue gas sample in the flue, provides reliable data support for subsequent analysis and detection, improves the accuracy and reliability of the flue gas sampling, and the disassembly assembly and limiting mechanism in the prefilter make the replacement and maintenance of the filter screen convenient, reduce the maintenance cost and downtime of the equipment, improve the use efficiency and overall performance of the equipment, the optimization design of the blowback system, through the heating treatment of blowback gas, effectively prevent the smoke dust from blocking the sampling pipe and prefilter, avoid the flue gas condensation problem caused by temperature reduction during the blowback process, guarantee the continuous and stable operation of the sampler body, prolong the service life of the equipment, and the reliable connecting structure between the sampler body and the flue ensures the safety and stability of the sampling process, reduces the sampling error and equipment failure caused by loose connection or sealing problem, and improves the reliability and stability of the whole sampling system. BRIEF DESCRIPTION OF DRAWINGS
[0013] The accompanying drawings are used to provide further understanding of the present application and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:
[0014] Figure 1 is a schematic diagram of the overall structure of the device of the present application;
[0015] Figure 2 is a schematic diagram of the top view structure of the sampler body of the present application;
[0016] Figure 3 is a schematic diagram of the enlarged structure of A of the present application; Figure 2
[0017] Figure 4 is a schematic diagram of the internal rear view structure of opening one of the present application;
[0018] Figure 5 is a schematic diagram of the structure of the clamping block one and the clamping block two of the present application;
[0019] In the drawings: 1, sampling pipe; 2, pre-filter; 3, filter screen; 4, back flushing air pipe opening; 5, heat tracing pipe line; 6, sampler body; 7, flue; 8, pipe line inlet; 9, connecting flange; 10, fixing plate; 11, opening one; 12, opening two; 13, clamping block one; 14, clamping block two; 15, damping shaft; 16, limiting groove; 17, limiting block; 18, power line inlet; 19, signal line inlet; 20, bottom plate; 21, sleeve; 22, counter flange. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0021] Please refer to Figures 1-5 , the present application provides a technical solution: a sampler for flue gas collection, comprising a sampling pipe 1, a pre-filter 2, a filter screen 3, a back flushing air pipe opening 4, a heat tracing pipe line 5, and a sampler body 6. One end of the sampling pipe 1 is placed in a flue 7. The one end of the sampling pipe 1 placed in the flue 7 is threadedly connected with the pre-filter 2. The filter screen 3 is placed in the pre-filter 2, and the pre-filter 2 is provided with a dismounting assembly. The end of the sampling pipe 1 away from the pre-filter 2 is connected with the sampler body 6. The upper end of the sampler body 6 is provided with a pipe line inlet 8. One end of the heat tracing pipe line 5 passes through the pipe line inlet 8 and is placed in the sampling pipe 1.
[0022] The flue gas sampler body 6 adopts an adjustable temperature controller, the temperature is controlled at 180℃±10%, the sampling pipe 1 and the filter element and other components are made of high-temperature-resistant materials, the flue gas sampler body 6 is reliably connected on the sampling point of the flue 7 through the connecting flange 9, the counter flange 22, the sleeve 21 and the bottom plate 20, the front end of the flue gas sampler body 6 can be connected with a sampling pipe 1, the sample gas is collected into the front filter 2 cavity of the flue gas sampler body 6, after the flue dust is filtered, the gas heating sampling pipe 1 enters the analysis system cabinet, the 2μm stainless steel filter screen 3 customized in the flue gas sampler body 6 cavity filters the sample gas, preventing dust from entering the inside of the analysis system. The back blowing fan provided in the back blowing air inlet periodically back blows the front filter 2 and the sampling pipe 1, preventing the flue dust from blocking the sampling pipe 1 and the front filter 2, causing the flue gas sampling gas path to be blocked. The back blowing system can set the back blowing interval time and the blowing time through PLC, the back blowing gas provided is heated through the heating pipeline 5 to form dry, oil-free and water-free compressed air or nitrogen, the back blowing gas is preheated in a low temperature environment, preventing the temperature in the heating cavity from being reduced when back blowing, causing the flue gas to condense and causing the flue gas sampler body 6 to malfunction. The flow direction of the back blowing gas is opposite to that of the sample gas.
[0023] One end of the sampling pipe 1 is fixedly connected with the connecting flange 9, the connecting flange 9 is fixedly connected with the sampler body 6 through the fastening bolt one, and a sealing gasket one is arranged between the connecting flange 9 and the sampler body 6.
[0024] The front filter 2 includes a square front pipe and a circular rear pipe, the filter screen 3 is arranged in the front pipe, the rear pipe is threadedly connected with one end of the sampling pipe 1, and the mesh aperture of the filter screen 3 is 2μm.
[0025] The dismounting assembly includes two symmetrically distributed fixed plates 10, an opening one 11, an opening two 12, a clamping block one 13, a clamping block two 14 and a damping rotating shaft 15, both ends of the filter screen 3 are fixedly connected with the fixed plates 10, the fixed plates 10 slide in the front pipe through the limiting mechanism, the opening one 11 is formed in the inner wall of the fixed plate 10, a plurality of equidistantly distributed clamping block ones 13 are fixedly connected in the opening one 11, the opening two 12 is formed in the wall body at both ends of the front pipe, the clamping block two 14 is movably arranged in the opening two 12, the upper end of the clamping block two 14 is fixedly connected with the damping rotating shaft 15, the opening two 12 is consistent with the clamping block two 14, and the clamping block one 13 is provided with a clamping groove.
[0026] In use, the clamping block 2 14 is inserted into the opening 1 1 through the opening 2 12 by rotating the damping shaft 15, and then the clamping block 2 14 is clamped into the clamping block 1 3 by rotating the damping shaft 15 in the forward direction, so as to complete the installation of the sampler body 6; in disassembly, the clamping block 2 14 is separated from the clamping block 1 3 by rotating the damping shaft 15 in the reverse direction, and then the clamping block 2 14 is lifted upward through the handle at one end of the damping shaft 15, so that the clamping block 2 14 passes through the opening 2 12, and then the filter screen 3 is pulled out by moving the fixed plate 10 to one side, so as to realize the quick replacement and disassembly of the filter screen 3.
[0027] The limiting mechanism comprises a T-shaped limiting slot 16 and a T-shaped limiting block 17, the limiting block 17 is fixedly connected to one end of the fixed plate 10, the limiting slot 16 is arranged on the inner wall of the front pipe, the limiting block 17 slides in the limiting slot 16, one end of the opening 2 12 is rotatably connected with two symmetrical sealing plates, the sealing plates can prevent the opening 2 12 from causing leakage of flue gas, and the sealing plates are provided with torsional springs at the connection positions of the rotating shafts of the opening 2 12 walls of the front pipe.
[0028] The upper end of the sampler body 6 is further provided with a power line inlet 18 and a signal line inlet 19, the outer wall of the flue 7 is fixedly connected with a bottom plate 20 through fastening bolts 3, one end of the bottom plate 20 is fixedly connected with a sleeve 21, the end of the sleeve 21 away from the bottom plate 20 is fixedly connected with a pair of flanges 22, the pair of flanges 22 and the connecting flange 9 are fixedly connected through fastening bolts 2, and the pair of flanges 22 and the connecting flange 9 are provided with a sealing gasket 2.
[0029] Finally, it should be noted that: the above only describes preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A sampler for collecting flue gas, characterized by: Including sampling pipe (1), prefilter (2), filter screen (3), back flushing gas pipe mouth (4), heat tracing line (5) and sampler body (6), one end of sampling pipe (1) is placed in flue (7), one end of sampling pipe (1) is screw connected with prefilter (2) placed in flue (7), filter screen (3) is placed in prefilter (2), and dismounting assembly is arranged in prefilter (2), one end of sampling pipe (1) is connected with sampler body (6) away from prefilter (2), power line inlet (18) and signal line inlet (19) are further arranged on the upper end of sampler body (6), the outer wall of flue (7) is fixedly connected with bottom plate (20) through fastening bolt three, one end of bottom plate (20) is fixedly connected with sleeve (21), the end of sleeve (21) away from bottom plate (20) is fixedly connected with counter flange (22), the counter flange (22) and the connecting flange (9) are fixedly connected through the fastening bolt two, the counter flange (22) and the connecting flange (9) are provided with sealing gasket two.
2. The smoke gas collector according to claim 1, wherein: One end of sampling pipe (1) is fixedly connected with connecting flange (9), connecting flange (9) is fixedly connected with sampler body (6) through fastening bolt one, and sealing gasket one is arranged between connecting flange (9) and sampler body (6).
3. The smoke gas collector according to claim 1, characterized in that: The prefilter (2) includes a square front pipe and a circular rear pipe, the filter screen (3) is arranged in the front pipe, the rear pipe is screw connected with one end of the sampling pipe (1), and the mesh aperture of the filter screen (3) is 2 μm.
4. The smoke gas collector according to claim 1, wherein: The dismounting assembly includes two symmetrically distributed fixed plates (10), an opening one (11), an opening two (12), a clamping block one (13), a clamping block two (14) and a damping rotating shaft (15), both ends of the filter screen (3) are fixedly connected with the fixed plates (10), the fixed plates (10) slide in the front pipe through the limiting mechanism, the opening one (11) is formed in the inner wall of the fixed plate (10), a plurality of equidistantly distributed clamping block ones (13) are fixedly connected in the opening one (11), the opening two (12) is formed in the wall body at both ends of the front pipe, the clamping block two (14) is movably arranged in the opening two (12), the upper end of the clamping block two (14) is fixedly connected with the damping rotating shaft (15), the opening two (12) is consistent with the clamping block two (14), and the clamping block one (13) is provided with a clamping groove.
5. A smoke gas collector according to claim 4, characterized in that: The limiting mechanism includes a T-shaped limiting groove (16) and a T-shaped limiting block (17), the limiting block (17) is fixedly connected with one end of the fixed plate (10), the limiting groove (16) is formed in the inner wall of the front pipe, and the limiting block (17) slides in the limiting groove (16), one end of the opening two (12) is rotatably connected with two symmetrically distributed sealing plates.
6. The smoke gas collector according to claim 1, wherein: The upper end of the sampler body (6) is further provided with a power line inlet (18) and a signal line inlet (19), the outer wall of the flue (7) is fixedly connected with a bottom plate (20) through a fastening bolt three, one end of the bottom plate (20) is fixedly connected with a sleeve (21), the end of the sleeve (21) away from the bottom plate (20) is fixedly connected with a counter flange (22), the counter flange (22) and the connecting flange (9) are fixedly connected through a fastening bolt two, and the counter flange (22) and the connecting flange (9) are provided with a sealing gasket two.