An ultra-supercritical power station boiler flue gas sampling device

Abstract

The application is suitable for the technical field of flue gas sampling, and provides a super-supercritical power station boiler flue gas sampling device, which comprises an air inlet pipe, one-way holes are uniformly arranged on the outer side wall of the air inlet pipe, a gas collecting assembly is connected to the top of the air inlet pipe, an adjusting mechanism is installed on the outer side wall of the air inlet pipe, the adjusting mechanism comprises a ring body, the ring body is threadedly connected to the outer side wall of the air inlet pipe, a baffle is uniformly hinged to the bottom of the ring body, and the baffle is attached to the outer side wall of the air inlet pipe on one side; a blocking mechanism is installed on the bottom of the ring body, the blocking mechanism comprises a gas cylinder, the gas cylinder is installed on the bottom of the ring body, a rubber sleeve is fixedly connected to the piston rod of the ring body, the rubber sleeve is sleeved on the outer side wall of the baffle, and a connecting piece is fixedly connected to the outer side wall of the rubber sleeve; the device solves the problems of small sampling range and uneven sampling, and achieves the effects of large-range sampling and uniform sampling.

Description

Technical Field

[0001] This invention relates to the field of flue gas sampling technology, and more specifically, to a flue gas sampling device for an ultra-supercritical power plant boiler. Background Technology

[0002] Ultra-supercritical and supercritical units in thermal power plants refer to the pressure of the working fluid inside the boiler. Ultra-supercritical power plant boilers produce flue gas during operation. In order to achieve the goals of energy conservation, emission reduction, and environmental pollution reduction, it is necessary to use sampling devices to sample the flue gas composition and perform qualitative or quantitative analysis. Existing sampling devices sample flue gas by setting up sampling tubes and extending them into the flue. The position of the sampling tubes is adjusted according to different sampling locations, or multiple sampling tubes are set up at different heights for sampling. However, these methods all have the disadvantage of low sampling efficiency. That is, the sampling tubes are relatively thin, while the flue gas duct is relatively thick. The sampling tubes can only sample at a certain point at this height. If the flue gas concentration is inconsistent, the sampled flue gas concentration will differ from the flue gas concentration in the duct. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a flue gas sampling device for ultra-supercritical power plant boilers.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a flue gas sampling device for an ultra-supercritical power plant boiler, comprising an inlet pipe, wherein one-way holes are uniformly opened on the outer side wall of the inlet pipe, a gas collection assembly is connected to the top of the inlet pipe, and an adjustment mechanism is installed on the outer side wall of the inlet pipe. The adjustment mechanism includes a ring body, which is threadedly connected to the outer side wall of the inlet pipe, and baffles are uniformly hinged to the bottom of the ring body, with one side of the baffles adhering to the outer side wall of the inlet pipe.

[0005] A blocking mechanism is installed at the bottom of the ring body. The blocking mechanism includes a cylinder, which is installed at the bottom of the ring body. A rubber sleeve is fixedly connected to the piston rod of the ring body, and the rubber sleeve is fitted onto the outer wall of the baffle.

[0006] The present invention is further configured such that: a connecting plate is fixedly connected to the outer wall of the rubber sleeve, a push ring is fixedly connected to the bottom of the connecting plate, and the push ring is sleeved on the outer wall of the air intake pipe.

[0007] The present invention is further configured such that a first connecting strip and a second connecting strip are connected between the plurality of baffles, and the first connecting strip is located above the second connecting strip.

[0008] The present invention is further configured such that a conical block is rotatably connected inside the intake pipe, and the conical block is located at the bottom end of the intake pipe.

[0009] The present invention is further configured such that: a fixing plate is uniformly fixedly connected to the top of the conical block, an annular groove is provided on the inner wall of the air intake pipe, one end of the fixing plate is inserted into the interior of the annular groove, and a guide strip is uniformly fixedly connected to the outer wall of the conical block.

[0010] The present invention is further configured such that: the gas collection assembly includes a cylinder, the top end of the air inlet pipe is connected to the outer side wall of the cylinder, a partition is slidably connected inside the cylinder, and both ends of the cylinder are connected to an exhaust pipe.

[0011] The present invention is further configured such that: a motor is installed on one side of the cylinder, the output end of the motor extends into the interior of the cylinder and is fixedly connected to a lead screw, and the partition is threadedly connected to the outer wall of the lead screw.

[0012] The present invention is further configured such that: a sensing component is installed inside the cylinder, the sensing component includes a guide rod, the guide rod is fixedly connected to the inside of the cylinder, the partition is slidably connected to the outer side wall of the guide rod, and two inductive switches are installed on the outer side wall of the guide rod, the two inductive switches are respectively located on both sides of the partition, and both inductive switches are electrically connected to the cylinder.

[0013] The present invention is further configured such that: two springs are sleeved on the outer wall of the guide rod, both springs are sleeved on the outer wall of the guide rod, one end of the spring is fixedly connected to the inner wall of the cylinder, and the other end of the spring is connected to the inductive switch.

[0014] The advantages of this invention are,

[0015] (1) By setting a baffle, the cylinder contracts and drives the rubber sleeve to slide on the outer wall of the baffle, while the push ring slides between the baffle and the air inlet pipe. As the push ring moves upward, the angle of the baffle changes and the baffle is opened in the flue gas duct, so that flue gas in multiple ranges in the flue gas duct can accumulate between the baffle and the air inlet pipe and enter the interior of the air inlet pipe through the exposed one-way hole, thereby improving the flue gas sampling effect.

[0016] (2) When the flue gas flows from bottom to top, the flue gas comes into contact with the cone block and the guide strip. The cone block can disperse the flue gas, and the flue gas pushes the guide strip and the cone block to rotate, which can rotate the flue gas at the bottom of the intake pipe. The flue gas that enters the intake pipe through the one-way hole is affected by the rotation of the fixed plate and rotates again, further avoiding the situation of inconsistent flue gas concentration. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a side view of the structure of the present invention;

[0019] Figure 3 yes Figure 2 A sectional view cut along the AA direction;

[0020] Figure 4 This is a schematic diagram of the cone-shaped block structure in this invention;

[0021] Figure 5 This is a schematic diagram of the vertical baffle structure in this invention;

[0022] Figure 6 This is a schematic diagram of the baffle tilting state structure of the present invention;

[0023] In the diagram: 1. Intake pipe; 2. One-way hole; 3. Adjustment mechanism; 31. Ring body; 32. Baffle; 33. First connecting band; 34. Conical block; 35. Second connecting band; 36. Guide strip; 37. Annular groove; 38. Fixing plate; 4. Blocking mechanism; 41. Cylinder; 42. Rubber sleeve; 43. Push ring; 44. Connecting plate; 5. Air collection assembly; 51. Cylinder body; 52. Motor; 53. Lead screw; 54. Baffle; 55. Exhaust pipe; 6. Sensing assembly; 61. Guide rod; 62. Spring; 63. Induction switch. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0027] Please see Figure 1-6The present invention provides the following technical solution: a flue gas sampling device for an ultra-supercritical power plant boiler, including an inlet pipe 1, one-way holes 2 are uniformly opened on the outer side wall of the inlet pipe 1, a gas collection assembly 5 is connected to the top of the inlet pipe 1, and an adjustment mechanism 3 is installed on the outer side wall of the inlet pipe 1. The adjustment mechanism 3 includes a ring 31, which is threaded to the outer side wall of the inlet pipe 1. A baffle 32 is uniformly hinged to the bottom of the ring 31, and one side of the baffle 32 is attached to the outer side wall of the inlet pipe 1. The one-way holes 2 are used to collect flue gas and discharge it into the gas collection assembly 5 through the inlet pipe 1. The baffle 32 is used to block the one-way holes 2. Since the ring 31 is threaded to the inlet pipe 1, by rotating the ring 31, the ring 31 and the baffle 32 can slide on the outer side wall of the inlet pipe 1, thereby adjusting the number of one-way holes 2 exposed to the outside.

[0028] A first connecting strip 33 and a second connecting strip 35 are connected to each of the multiple baffles 32. The first connecting strip 33 is located above the second connecting strip 35. The first connecting strip 33 and the second connecting strip 35 are used to connect the multiple baffles 32 so that the multiple baffles 32 block the one-way hole 2. Since the baffles 32 are hinged to the bottom of the ring body 31, the baffles 32 can change angle, and the first connecting strip 33 and the second connecting strip 35 will be pulled, so that the baffles 32 can stick to the outer wall of the air intake pipe 1.

[0029] A conical block 34 is rotatably connected inside the intake pipe 1. The conical block 34 is located at the bottom end of the intake pipe 1. A fixing plate 38 is uniformly fixedly connected to the top of the conical block 34. An annular groove 37 is opened on the inner wall of the intake pipe 1. One end of the fixing plate 38 is inserted into the annular groove 37. A guide strip 36 is uniformly fixedly connected to the outer wall of the conical block 34. When the flue gas flows from bottom to top, the flue gas contacts the conical block 34 and the guide strip 36. The conical block 34 can disperse the flue gas, and the flue gas pushes the guide strip 36 and the conical block 34 to rotate, which can rotate the flue gas at the bottom of the intake pipe 1, thereby avoiding the situation of inconsistent flue gas concentration. When the conical block 34 rotates, the conical block 34 drives the fixing plate 38 to rotate inside the annular groove 37, thereby playing an axial limiting role for the conical block 34. At the same time, the flue gas entering the intake pipe 1 through the one-way hole 2 is affected by the rotation of the fixing plate 38 and rotates again, further avoiding the situation of inconsistent flue gas concentration.

[0030] A blocking mechanism 4 is installed at the bottom of the ring body 31. The blocking mechanism 4 includes a cylinder 41, which is installed at the bottom of the ring body 31. A rubber sleeve 42 is fixedly connected to the piston rod of the ring body 31. The rubber sleeve 42 is fitted onto the outer wall of the baffle 32. A connecting plate 44 is fixedly connected to the outer wall of the rubber sleeve 42. A push ring 43 is fixedly connected to the bottom of the connecting plate 44. The push ring 43 is fitted onto the outer wall of the air intake pipe 1. The cylinder 41 is used to push the rubber sleeve 42 and the push ring 43 to move up and down. The cylinder 41 retracts... When the baffle 32 is compressed, the rubber sleeve 42 slides on the outer wall of the baffle 32, and the push ring 43 slides between the baffle 32 and the air inlet pipe 1. As the push ring 43 moves upward, the angle of the baffle 32 changes, allowing the one-way hole 2 to be exposed. The baffle 32 is opened in the flue gas duct, allowing flue gas in multiple ranges in the flue gas duct to accumulate between the baffle 32 and the air inlet pipe 1 and enter the interior of the air inlet pipe 1 through the exposed one-way hole 2, thereby improving the flue gas sampling effect.

[0031] The gas collection assembly 5 includes a cylinder 51. The top end of the air inlet pipe 1 is connected to the outer wall of the cylinder 51. A partition 54 is slidably connected inside the cylinder 51. Both ends of the cylinder 51 are connected to exhaust pipes 55. A motor 52 is installed on one side of the cylinder 51. The output end of the motor 52 extends into the inside of the cylinder 51 and is fixedly connected to a lead screw 53. The partition 54 is threaded to the outer wall of the lead screw 53. The motor 52 drives the lead screw 53 to rotate inside the cylinder 51. Since the partition 54 is threaded to the lead screw 53, when the lead screw 53 rotates, the partition 54 can slide inside the cylinder 51. The partition 54 divides the inner cavity of the cylinder 51 into a first chamber and a second chamber. As the partition 54 slides inside the cylinder 51, the space inside the first chamber and the second chamber is adjusted.

[0032] An induction assembly 6 is installed inside the cylinder 51. The induction assembly 6 includes a guide rod 61, which is fixedly connected to the inside of the cylinder 51. A partition 54 is slidably connected to the outer wall of the guide rod 61. Two induction switches 63 are installed on the outer wall of the guide rod 61, located on opposite sides of the partition 54. Two springs 62 are sleeved on the outer wall of the guide rod 61. One end of the spring 62 is fixedly connected to the inner wall of the cylinder 51, and the other end is connected to the induction switch 63. Both induction switches 63 are electrically connected to the cylinder 41. When the partition 54 slides inside the cylinder 51, it slides synchronously on the outer wall of the guide rod 61. The partition 54 compresses the induction switch 63 and causes it to slide on the outer wall of the guide rod 61. The springs 62 support the induction switches 63. When the induction switches 63 slide, the springs 62 apply a reaction force to the induction switches 63, which triggers the induction switches 63, thereby controlling the cylinder 41 to start or stop.

[0033] Example

[0034] Specifically, by rotating the ring 31, the staff can make the ring 31 and the baffle 32 slide on the outer wall of the air intake pipe 1, thereby adjusting the number of one-way holes 2 exposed to the outside. The first connecting strip 33 and the second connecting strip 35 are used to connect multiple baffles 32 so that multiple baffles 32 can block the one-way holes 2.

[0035] After adjustment, the staff installed the device in the boiler flue gas duct and pressed the switch to start the control motor 52. The output end of the motor 52 drove the lead screw 53 to rotate inside the cylinder 51. Since the partition plate 54 is threadedly connected to the lead screw 53, when the lead screw 53 rotates, the partition plate 54 can slide inside the cylinder 51. As the partition plate 54 slides inside the cylinder 51, the space inside the first chamber and the second chamber is adjusted.

[0036] When the partition 54 slides inside the cylinder 51, the partition 54 slides synchronously on the outer wall of the guide rod 61. The partition 54 squeezes the inductive switch 63 and causes the inductive switch 63 to slide on the outer wall of the guide rod 61. The spring 62 is used to support the inductive switch 63. When the inductive switch 63 slides, the spring 62 applies a reaction force to the inductive switch 63, that is, the inductive switch 63 will be triggered, thereby controlling the cylinder 41 to start.

[0037] Cylinder 41 is used to push rubber sleeve 42 and push ring 43 to move up and down. When cylinder 41 retracts, rubber sleeve 42 slides on the outer wall of baffle 32, and push ring 43 slides between baffle 32 and air inlet pipe 1. As push ring 43 moves up, baffle 32 changes angle, allowing one-way hole 2 to be exposed. As baffle 32 changes angle, first connecting band 33 and second connecting band 35 are pulled, and baffle 32 is opened in flue gas duct, so that flue gas in multiple ranges in flue gas duct can accumulate between baffle 32 and air inlet pipe 1 and enter the interior of air inlet pipe 1 through the exposed one-way hole 2, thereby improving the flue gas sampling effect.

[0038] When the flue gas flows from bottom to top, it comes into contact with the conical block 34 and the guide strip 36. The conical block 34 can disperse the flue gas, and the flue gas pushes the guide strip 36 and the conical block 34 to rotate, which can rotate the flue gas at the bottom of the intake pipe 1, thereby avoiding the situation of inconsistent flue gas concentration. When the conical block 34 rotates, the conical block 34 drives the fixed plate 38 to rotate inside the annular slide groove 37, thereby playing an axial limiting role for the conical block 34. At the same time, the flue gas entering the intake pipe 1 through the one-way hole 2 is affected by the rotation of the fixed plate 38 and rotates again, further avoiding the situation of inconsistent flue gas concentration.

[0039] Smoke enters the first chamber through the inlet pipe 1. When the first chamber is full of smoke, the smoke is discharged through the exhaust pipe 55.

[0040] Conversely, if the operator controls the motor 52 to rotate in the opposite direction, causing the baffle 54 to move in the opposite direction inside the cylinder 51, the flue gas can be discharged into the second chamber for resampling.

[0041] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0045] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A flue gas sampling device for an ultra-supercritical power plant boiler, comprising an inlet pipe (1), characterized in that: One-way holes (2) are evenly provided on the outer side wall of the air intake pipe (1). An air collection assembly (5) is connected to the top of the air intake pipe (1). An adjustment mechanism (3) is installed on the outer side wall of the air intake pipe (1). The adjustment mechanism (3) includes a ring (31). The ring (31) is threaded to the outer side wall of the air intake pipe (1). A baffle (32) is evenly hinged to the bottom of the ring (31). One side of the baffle (32) is attached to the outer side wall of the air intake pipe (1). A blocking mechanism (4) is installed at the bottom of the ring (31). The blocking mechanism (4) includes a cylinder (41). The cylinder (41) is installed at the bottom of the ring (31). A rubber sleeve (42) is fixedly connected to the piston rod of the ring (31). The rubber sleeve (42) is sleeved on the outer side wall of the baffle (32). A connecting plate (44) is fixedly connected to the outer wall of the rubber sleeve (42), and a push ring (43) is fixedly connected to the bottom of the connecting plate (44). The push ring (43) is sleeved on the outer wall of the air intake pipe (1).

2. The flue gas sampling device for an ultra-supercritical power plant boiler according to claim 1, characterized in that: A first connecting strip (33) and a second connecting strip (35) are connected to each of the plurality of baffles (32), with the first connecting strip (33) located above the second connecting strip (35).

3. The flue gas sampling device for an ultra-supercritical power plant boiler according to claim 2, characterized in that: The intake pipe (1) is rotatably connected to a conical block (34), which is located at the bottom end of the intake pipe (1).

4. The flue gas sampling device for an ultra-supercritical power plant boiler according to claim 3, characterized in that: The top of the conical block (34) is uniformly fixedly connected with a fixing plate (38), the inner wall of the air intake pipe (1) is provided with an annular groove (37), one end of the fixing plate (38) is inserted into the interior of the annular groove (37), and the outer wall of the conical block (34) is uniformly fixedly connected with a guide strip (36).

5. The flue gas sampling device for an ultra-supercritical power plant boiler according to claim 4, characterized in that: The gas collection assembly (5) includes a cylinder (51), the top end of the air inlet pipe (1) is connected to the outer wall of the cylinder (51), a partition (54) is slidably connected inside the cylinder (51), and an exhaust pipe (55) is connected to both ends of the cylinder (51).

6. The flue gas sampling device for an ultra-supercritical power plant boiler according to claim 5, characterized in that: A motor (52) is installed on one side of the cylinder (51). The output end of the motor (52) extends into the interior of the cylinder (51) and is fixedly connected to a lead screw (53). The partition (54) is threaded to the outer wall of the lead screw (53).

7. The flue gas sampling device for an ultra-supercritical power plant boiler according to claim 6, characterized in that: The cylinder (51) is equipped with a sensing component (6), which includes a guide rod (61) fixedly connected to the inside of the cylinder (51). The partition (54) is slidably connected to the outer wall of the guide rod (61). Two induction switches (63) are installed on the outer wall of the guide rod (61). The two induction switches (63) are located on both sides of the partition (54) and are electrically connected to the cylinder (41).

8. The flue gas sampling device for an ultra-supercritical power plant boiler according to claim 7, characterized in that: Two springs (62) are sleeved on the outer wall of the guide rod (61). One end of the spring (62) is fixedly connected to the inner wall of the cylinder (51), and the other end of the spring (62) is connected to the induction switch (63).

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