Energy-saving circulating flue gas sampling measurer
By designing structures such as sealing rings, expandable collars, and friction pads, the problem of inaccurate detection caused by gaps at the connection points of flue gas samplers in special scenarios has been solved, thus achieving accuracy and convenient operation of flue gas collection and measurement equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING ZEYI POWER ENG CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-28
AI Technical Summary
In special scenarios, gaps exist at the connection between the flue gas sampler and the sampling port when measuring flue gas, leading to inaccurate test results.
An energy-saving circulating flue gas sampling and measuring device was designed. It adopts a structure of sealing ring, expandable collar and friction pad. The inner wall of the pipe is cleaned by air blowing by an air pump and sealed to prevent flue gas from leaking out of the gap. The air pump drives the sealing ring and collar to fit against the inner wall of the pipe, and together with the friction pad, they are fixed on the pipe to achieve accurate measurement.
It improves the measurement accuracy of flue gas collection and measurement equipment, adapts to different pipelines, frees up the hands of staff, and is easy to operate.
Smart Images
Figure CN224176196U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of flue gas sampling and measuring devices, specifically an energy-saving circulating flue gas sampling and measuring device. Background Technology
[0002] An energy-saving circulating flue gas sampler is a device used to collect and measure relevant parameters of flue gas, featuring energy saving and recycling. It utilizes a circulating pump to circulate the sampled gas within the sampling system. During this circulation process, specific sensors or measurement modules perform real-time measurement and analysis of various components in the flue gas (such as sulfur dioxide, nitrogen oxides, and particulate matter).
[0003] Flue gas sampling and measuring instruments operate in complex environments and are not always fixed in one location. This leads to challenges in specific scenarios, such as sampling flue gas from non-fixed sampling points or temporary emission sources. In these situations, the lack of a professional sealing device results in gaps at the connection between the flue gas sampling and measuring instrument and the sampling port, leading to inaccurate test results. Therefore, this paper proposes an energy-saving circulating flue gas sampling and measuring instrument to address these issues. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes an energy-saving circulating flue gas sampling and measuring device.
[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: An energy-saving circulating flue gas sampling and measuring device includes a flue gas collection and measuring equipment. A sampling probe is fixedly installed at one end of the flue gas collection and measuring equipment. A rectangular frame is fixedly installed on the top of the flue gas collection and measuring equipment. A miniature air pump is fixedly installed inside the rectangular frame. A first air outlet pipe is fixedly installed on one side of the miniature air pump. A hollow fixing ring is fixedly installed on the surface of the sampling probe. Several inclined fixing pipes connected to the inside are fixedly installed on the surface of the fixing ring. The end of the first air outlet pipe away from the miniature air pump slides within the fixing ring. A connecting pipe is fixedly installed inside the fixing ring. A hollow and expandable collar is fixedly installed on the surface of the sampling probe. The end of the connecting pipe away from the fixing ring is connected to the inside of the collar.
[0006] Furthermore, a sealing ring is fixedly installed at one end of the first vent pipe inside the fixing ring, and a cover plate is rotatably connected to the inside of the connecting pipe via a torsion spring.
[0007] Furthermore, a boss is fixedly installed on one side of the cover plate, and two rubber limiting balls are fixedly installed on the surface of the boss. A limiting groove is opened inside the connecting pipe.
[0008] Furthermore, an inclined filter screen is fixedly installed inside the fixed tube, and a discharge hole communicating with the inside is opened at the bottom of the fixed tube.
[0009] Furthermore, a second air outlet pipe is better installed on one side of the micro air pump, and a fixed cylinder is fixedly installed at the bottom of the flue gas collection and measurement device. An extension rod is slidably connected inside the fixed cylinder through a sealing plate, and an arc-shaped base is fixedly installed at the end of the extension rod away from the sealing plate.
[0010] Furthermore, a plurality of friction pads are fixedly installed on the surface of the base, and the friction pads are made of a deformable material.
[0011] The advantages of this utility model are:
[0012] 1. This utility model utilizes an air pump to deliver gas through a first outlet pipe into a fixed ring. A large amount of gas flowing into the fixed ring is then ejected through several fixed pipes. Because the fixed pipes are inclined, the ejected gas cleans designated locations on the inner wall of the pipe. Pushing one end of the first outlet pipe causes it, along with the sealing ring, to enter the connecting pipe. Once the first outlet pipe and the connecting pipe are fixed, the gas continuously supplied by the micro air pump enters the hollow collar through the connecting pipe, causing the collar to rapidly expand until it completely adheres to the inner wall of the pipe, at which point the micro air pump stops supplying gas. After measuring the flue gas in the pipe, the first outlet pipe is slid out of the connecting pipe. At this point, the end cap will temporarily reset under the action of the boss and the limiting ball, facilitating the flow of gas from the collar out of the connecting pipe, fixed ring, and fixed pipe, leaving the collar in a deflated state, thus facilitating the removal of the sampling probe from the pipe. The designed structure enables the flue gas sampling and measurement equipment to seal the flue gas inside the pipeline when collecting and measuring flue gas. This not only allows it to adapt to different pipelines but also effectively prevents the flue gas from flowing out through gaps, thereby improving the accuracy of the flue gas sampling and measurement equipment.
[0013] 2. In this invention, after the sampling probe of the flue gas sampling and measuring device is inserted into the pipeline, the micro air pump is restarted, allowing gas to enter the fixed cylinder through the second outlet pipe. This gas pushes the sealing disc, extension rod base, and friction pad inside the fixed cylinder to move together, causing the base and friction pad to be positioned below and in contact with the outer wall of the pipeline. Because the components of the flue gas sampling and measuring device are concentrated at the end far from the sampling probe, the center of the device is also far from the sampling probe. When the operator releases the flue gas sampling and measuring device, the base, along with the friction pad, tilts upwards. The base and friction pad then abut against the outer wall of the pipeline, thus fixing the flue gas sampling and measuring device to the pipeline, freeing the operator's hands and facilitating operation. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a three-dimensional structural diagram of the flue gas collection and measurement device in this utility model;
[0016] Figure 2 This is a cross-sectional view of the rectangular frame in this utility model;
[0017] Figure 3 This is a partial structural schematic diagram of the sampling probe in this utility model;
[0018] Figure 4 This utility model Figure 3 A schematic diagram of the structure at point A;
[0019] Figure 5 This utility model Figure 3 A schematic diagram of the structure at point B;
[0020] Figure 6 This is a schematic diagram of the structure of the base of this utility model.
[0021] In the diagram: 1. Flue gas collection and measurement equipment; 2. Sampling probe; 3. Rectangular frame; 4. Fixing ring; 5. Fixing pipe; 6. Connecting pipe; 7. Collar; 8. Miniature air pump; 9. First outlet pipe; 10. Sealing ring; 11. Cover plate; 12. Limiting groove; 13. Boss; 14. Limiting ball; 15. Filter screen; 16. Discharge hole; 17. Second outlet pipe; 18. Fixing cylinder; 19. Extension rod; 20. Sealing disc; 21. Base support; 22. Friction pad. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0023] Please see Figure 1-6As shown, an energy-saving circulating flue gas sampling and measuring device includes a flue gas sampling and measuring device 1. A sampling probe 2 is fixedly installed at one end of the flue gas sampling and measuring device 1. A rectangular frame 3 is fixedly installed on the top of the flue gas sampling and measuring device 1. A miniature air pump 8 is fixedly installed inside the rectangular frame 3. A first air outlet pipe 9 is fixedly installed on one side of the miniature air pump 8. A hollow fixing ring 4 is fixedly installed on the surface of the sampling probe 2. Several inclined fixing pipes 5, which are connected to the inside, are fixedly installed on the surface of the fixing ring 4. The end of the first air outlet pipe 9 away from the miniature air pump 8 slides inside the fixing ring 4. A connecting pipe 6 is fixedly installed inside the fixing ring 4. A hollow and expandable collar 7 is fixedly installed on the surface of the sampling probe 2. The end of the connecting pipe 6 away from the fixing ring 4 is connected to the inside of the collar 7.
[0024] Specifically, a sealing ring 10 is fixedly installed at one end of the first exhaust pipe 9 inside the fixing ring 4, and a cover plate 11 is rotatably connected to the inside of the connecting pipe 6 via a torsion spring. A boss 13 is fixedly installed on one side of the cover plate 11, and two rubber limiting balls 14 are fixedly installed on the surface of the boss 13. A limiting groove 12 is opened inside the connecting pipe 6. An inclined filter screen 15 is fixedly installed inside the fixing pipe 5, and a discharge hole 16 communicating with the inside is opened at the bottom of the fixing pipe 5.
[0025] During operation, when the flue gas sampling and measuring device 1 collects and measures the flue gas inside the pipeline, the sampling probe 2 of the device 1 is inserted into the pipeline. Due to the inconsistent diameter of the pipelines being tested, a large gap may occur between the sampling probe 2 and the inner wall of the pipeline. At this point, the miniature air pump 8 inside the rectangular frame 3 is activated. The air pump delivers gas through the first outlet pipe 9 to the fixed ring 4. A large amount of gas rushes into the fixed ring 4 and is ejected through several fixed pipes 5. Because the fixed pipes 5 are inclined, the ejected gas cleans a designated location on the inner wall of the pipeline. It should be noted that the designated location here refers to the position where the collar 7 contacts the inner wall after expansion.
[0026] After cleaning the designated area inside the pipeline, push one end of the first vent pipe 9 to allow it, along with the sealing ring 10, to enter the connecting pipe 6. Rotate and open the cover plate 11 inside the connecting pipe 6, allowing the cover plate 11, along with the boss 13 and the limiting ball 14, to rotate into the limiting groove 12. The boss 13 and the limiting ball 14 are made of rubber, so they will be squeezed and deformed after entering the limiting groove 12, thus helping to fix the cover plate 11. Once the first vent pipe 9 and the connecting pipe 6 are fixed, the gas continuously supplied by the micro air pump 8 will enter the hollow collar 7 through the connecting pipe 6, causing the collar 7 to expand rapidly until it is completely in contact with the inner wall of the pipeline (the collar 7 has a built-in pressure sensor), and then the micro air pump 8 will stop supplying gas. After the measurement of the flue gas in the pipeline is completed, the first outlet pipe 9 is slid out of the connecting pipe 6. At this time, the end cap will be temporarily reset under the action of the boss 13 and the limiting ball 14, so that the gas in the collar 7 can flow out from the connecting pipe 6, the fixed ring 4 and the fixed pipe 5, so that the collar 7 is in a deflated state, which makes it easy to remove the sampling probe 2 from the pipeline.
[0027] The structure designed above enables the flue gas collection and measurement device 1 to seal the flue gas inside the pipeline when collecting and measuring flue gas. This not only allows it to adapt to different pipelines but also effectively prevents the flue gas from flowing out through gaps, thereby improving the accuracy of the flue gas collection and measurement device 1 in measuring flue gas.
[0028] A second exhaust pipe 17 is better installed on one side of the miniature air pump 8. A fixed cylinder 18 is fixedly installed at the bottom of the flue gas collection and measurement device 1. An extension rod 19 is slidably connected to the inside of the fixed cylinder 18 through a sealing plate 20. An arc-shaped base 21 is fixedly installed at the end of the extension rod 19 away from the sealing plate 20. Several friction pads 22 are fixedly installed on the surface of the base 21. The friction pads 22 are made of deformable material.
[0029] During operation, after the sampling probe 2 of the flue gas collection and measurement device 1 is inserted into the pipeline, the micro air pump 8 is restarted, allowing gas to enter the fixed cylinder 18 through the second outlet pipe 17. This pushes the sealing disc 20, extension rod 19, base support 21, and friction pad 22 within the fixed cylinder 18 to move together, bringing the base support 21 and friction pad 22 below and in contact with the outer wall of the pipeline. Since the components of the flue gas collection and measurement device 1 are concentrated at the end furthest from the sampling probe 2, the center of the device is also located furthest from the sampling probe 2. When the operator releases the flue gas collection and measurement device 1, the base support 21, along with the friction pad 22, tilts upwards. The base support 21 and friction pad 22 then abut against the outer wall of the pipeline, thus securing the flue gas collection and measurement device 1 to the pipeline, freeing the operator's hands and facilitating its operation.
[0030] Working principle: When the flue gas sampling and measuring device 1 collects and measures the flue gas in the pipeline, the sampling probe 2 of the device 1 is inserted into the pipeline. Due to the inconsistent diameter of the pipelines being tested, a large gap may occur between the sampling probe 2 and the inner wall of the pipeline. At this time, the miniature air pump 8 inside the rectangular frame 3 is activated, and the air pump delivers gas through the first outlet pipe 9 to the fixed ring 4. A large amount of gas rushes into the fixed ring 4 and is ejected through several fixed pipes 5. Since the fixed pipes 5 are inclined, the ejected gas will clean the designated location on the inner wall of the pipeline. After cleaning the designated area inside the pipeline, push one end of the first vent pipe 9 to allow it, along with the sealing ring 10, to enter the connecting pipe 6. Rotate and open the cover plate 11 inside the connecting pipe 6, allowing the cover plate 11, along with the boss 13 and the limiting ball 14, to rotate into the limiting groove 12. The boss 13 and the limiting ball 14 are made of rubber, so they will be squeezed and deformed after entering the limiting groove 12, thus helping to fix the cover plate 11. Once the first vent pipe 9 and the connecting pipe 6 are fixed, the gas continuously supplied by the micro air pump 8 will enter the hollow collar 7 through the connecting pipe 6, causing the collar 7 to expand rapidly until it completely adheres to the inner wall of the pipeline, at which point the micro air pump 8 will stop supplying gas. After the measurement of the flue gas in the pipeline is completed, the first outlet pipe 9 is slid out of the connecting pipe 6. At this time, the end cap will be temporarily reset under the action of the boss 13 and the limiting ball 14, so that the gas in the collar 7 can flow out from the connecting pipe 6, the fixed ring 4 and the fixed pipe 5, so that the collar 7 is in a deflated state, which makes it easy to remove the sampling probe 2 from the pipeline.
[0031] After the sampling probe 2 of the flue gas collection and measurement device 1 is inserted into the pipeline, the micro air pump 8 is restarted, allowing gas to enter the fixed cylinder 18 through the second outlet pipe 17. This pushes the sealing disc 20, extension rod 19, base support 21, and friction pad 22 within the fixed cylinder 18 to move together, causing the base support 21 and friction pad 22 to be positioned below and in contact with the outer wall of the pipeline. Since the components of the flue gas collection and measurement device 1 are concentrated at the end away from the sampling probe 2, the center of the flue gas collection and measurement device 1 will also be located away from the sampling probe 2. The operator releases the flue gas collection and measurement device 1, causing the base support 21, along with the friction pad 22, to tilt upwards, using the base support 21 and friction pad 22 to abut against the outer wall of the pipeline.
[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. An energy-saving circulating flue gas sampling and measuring device, comprising a flue gas collection and measuring device (1), wherein a sampling probe (2) is fixedly installed at one end of the flue gas collection and measuring device (1), characterized in that: A rectangular frame (3) is fixedly installed on the top of the flue gas collection and measurement device (1), and a micro air pump (8) is fixedly installed inside the rectangular frame (3). A first air outlet pipe (9) is fixedly installed on one side of the micro air pump (8). A hollow fixing ring (4) is fixedly installed on the surface of the sampling probe (2). Several fixed tubes (5) connected to the inside and inclined are fixedly installed on the surface of the fixing ring (4). The end of the first air outlet tube (9) away from the micro air pump (8) slides inside the fixing ring (4). A connecting tube (6) is fixedly installed inside the fixing ring (4). A hollow and expandable collar (7) is fixedly installed on the surface of the sampling probe (2). The end of the connecting tube (6) away from the fixing ring (4) is connected to the inside of the collar (7).
2. The energy-saving circulating flue gas sampling and measuring device according to claim 1, characterized in that: A sealing ring (10) is fixedly installed at one end of the first vent pipe (9) inside the fixing ring (4), and a cover plate (11) is rotatably connected inside the connecting pipe (6) by a torsion spring.
3. The energy-saving circulating flue gas sampling and measuring device according to claim 2, characterized in that: A boss (13) is fixedly installed on one side of the cover plate (11), and two rubber limiting balls (14) are fixedly installed on the surface of the boss (13). A limiting groove (12) is opened inside the connecting pipe (6).
4. The energy-saving circulating flue gas sampling and measuring device according to claim 1, characterized in that: An inclined filter screen (15) is fixedly installed inside the fixed tube (5), and a discharge hole (16) communicating with the inside is opened at the bottom of the fixed tube (5).
5. The energy-saving circulating flue gas sampling and measuring device according to claim 1, characterized in that: The micro air pump (8) is better equipped with a second air outlet pipe (17) on one side. The bottom of the flue gas collection and measurement device (1) is fixedly installed with a fixed cylinder (18). The inside of the fixed cylinder (18) is slidably connected to an extension rod (19) through a sealing plate (20). An arc-shaped base support (21) is fixedly installed at the end of the extension rod (19) away from the sealing plate (20).
6. The energy-saving circulating flue gas sampling and measuring device according to claim 5, characterized in that: A plurality of friction pads (22) are fixedly installed on the surface of the base (21), and the friction pads (22) are made of deformable material.