Thermal power generation carbon emission monitoring device

Abstract

The invention discloses a thermal power generation carbon emission monitoring device, and belongs to the technical field of carbon emission monitoring. The invention relates to a thermal power generation carbon emission monitoring device which comprises a horizontally arranged flow guide pipe, a flue gas sampling pipe, a smoke dust sampling pipe and a sampling nozzle assembly, the flue gas sampling pipe and the smoke dust sampling pipe are respectively communicated with the flow guide pipe; the smoke sampling pipe comprises a sampling cylinder and a sampling elbow, one end of the sampling cylinder is communicated with the flow guide pipe, and the other end of the sampling cylinder is communicated with the sampling elbow; the sampling nozzle assembly comprises a fixed seat, a turntable and an L-shaped connecting rod; the turntable is arranged on the lower side of the sampling elbow opening; one end of the L-shaped connecting rod is fixedly connected with the sampling elbow, and the other end is coaxially and rotatably connected with the turntable; sampling nozzles with different sizes can be replaced as required, so that the operation steps of selecting and taking the sampling nozzles are reduced, and the detection efficiency is improved; meanwhile, the sampling nozzle is preheated, so that the temperature difference is prevented from being too large when the sampling nozzle is in contact with flue gas, and particulate matter adhesion is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of carbon emission monitoring, and more specifically, relates to a carbon emission monitoring device for thermal power generation. Background Art

[0002] Thermal power generation is one of the main sources of global electricity supply, but it is also a significant source of carbon emissions. Existing thermal power plants mostly rely on fossil fuels such as coal, oil, and natural gas. The combustion of these fuels produces large amounts of carbon dioxide, which has a serious impact on the environment. Carbon emissions from thermal power generation typically use analyzers, which sample, measure composition, and process data. During this process, existing technologies typically require the system to calculate the appropriate sampling nozzle based on the pressure, smoke temperature, and flow rate within the sampling channel. The nozzle is then replaced by the inspector. However, the inspector usually has to carry the sampling nozzle with them, making it impossible to perform a test if they forget to carry it. Furthermore, the newly replaced nozzle is cooler, and when it comes into contact with the hot smoke, the gas will form water droplets when it contacts the cooler nozzle. This causes dust, particulate matter, and water droplets to adhere to the outer wall of the nozzle, potentially clogging it and distorting test results. Furthermore, sticky particles adhere to the nozzle, making it difficult to clean. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a thermal power generation carbon emission monitoring device, which can realize the replacement of sampling nozzles of different sizes as needed, reduce the operation steps of selecting and taking sampling nozzles, and improve detection efficiency; at the same time, the sampling nozzle is preheated to prevent excessive temperature difference when in contact with flue gas, thereby avoiding the occurrence of particulate matter adhesion.

[0004] The present invention provides a thermal power generation carbon emission monitoring device, which includes a horizontally arranged guide pipe, a flue gas sampling pipe, a smoke dust sampling pipe and a sampling nozzle assembly; the flue gas sampling pipe and the smoke dust sampling pipe are respectively connected to the guide pipe; the smoke dust sampling pipe includes a sampling cylinder and a sampling bend, one end of the sampling cylinder is connected to the guide pipe, and the other end of the sampling cylinder is connected to the sampling bend; the sampling bend opens vertically downward; the sampling nozzle assembly includes a fixed seat, a turntable and an L-shaped connecting rod; the turntable is arranged on the lower side of the sampling bend opening; one end of the L-shaped connecting rod is fixedly connected to the sampling bend, and the other end is coaxially connected to the turntable; one side of the fixed seat is fixedly connected to the sampling bend, and the fixed seat and the turntable are nested and slidably connected with each other; a plurality of mounting holes are provided on the outer edge of the turntable, and sampling nozzles of different opening sizes are respectively provided in the mounting holes, and the sampling nozzles and the sampling bend are detachably connected; when the turntable rotates until the mounting hole and the sampling bend opening are coaxial, the upper end of the sampling nozzle is connected to the sampling bend.

[0005] As a further improvement of the present invention, the sampling nozzle includes a sampling head, a support block and a mounting rod; the mounting rod is arranged on the upper side of the support block, and the sampling head is arranged on the lower side of the support block. The outer diameter of the support block is larger than the mounting hole, and the upper side surface of the turntable abuts against the lower side surface of the support block to support the sampling nozzle; the outer diameter of the sampling head matches the inner diameter of the mounting hole; an external thread is provided on the outside of the mounting rod, and an internal thread is provided at the opening of the sampling bend, so that the mounting rod and the sampling bend are threadedly connected.

[0006] As a further improvement of the present invention, the sampling nozzle assembly also includes a mounting ring and a baffle; the baffle extends radially along the mounting ring; the number of sampling nozzles is n, and the number of baffles is n-1; the mounting ring is arranged on the lower side of the turntable, and the mounting ring is nested and connected with the L-shaped connecting rod so that the turntable can drive the sampling nozzle to rotate relative to the baffle; when a sampling nozzle is connected to the sampling elbow, there is at least one baffle on the lower side of the remaining sampling nozzle to block the opening.

[0007] As a further improvement of the present invention, when the baffle blocks the sampling nozzle, the upper side of the baffle abuts against the opening of the sampling nozzle; the opening direction of the sampling nozzle is vertically downward; the end of the baffle is at least larger than the outer diameter of the opening of the sampling nozzle.

[0008] As a further improvement of the present invention, an arc-shaped plate is provided on the side of the fixed seat close to the turntable, the inner diameter of the arc-shaped plate matches the outer diameter of the turntable, and a convex strip is provided on the outer side of the arc-shaped plate; a mounting groove is provided on the outer side of the turntable, the mounting groove matches the convex strip, and the convex strip and the mounting groove are nested so that the turntable can rotate relative to the fixed seat.

[0009] As a further improvement of the present invention, a base is provided at the bottom end of the sampling elbow, an external thread is provided on the outside of the base, an internal thread is provided on the inner side wall of the opening at one end of the sampling tube, and the base and the sampling tube are threadedly connected.

[0010] As a further improvement of the present invention, a hollow sampling cavity is provided in the sampling cylinder, and a filter cylinder made of glass fiber is placed transversely in the sampling cavity.

[0011] As a further improvement of the present invention, it also includes a Pitot tube and a smoke temperature couple; the two Pitot tubes are arranged on the outside of the sampling tube, one end of the Pitot tube is connected to the sampling tube, and the opening directions of the two Pitot tubes are opposite; the two Pitot tubes are arranged in parallel, and the opening direction of any Pitot tube is the same as the opening direction of the sampling nozzle; the smoke temperature couple is fixedly arranged on the Pitot tube, and the smoke temperature couple is electrically connected to the external detection equipment through a connecting line.

[0012] As a further improvement of the present invention, it also includes a heating plate; the heating plate is a circular structure, and the heating plate is arranged on the upper side of the turntable, and when the turntable rotates, the heating plate is driven to rotate; a through hole is opened in the center of the heating plate, and the through hole is nested on the outside of the L-shaped connecting rod; the heating plate is used to heat the turntable, and the heating plate is electrically connected to the external power supply through a connecting wire.

[0013] As a further improvement of the present invention, a plurality of semicircular grooves are provided on the outer edge of the heating plate, which are respectively nested on the outer side of the support block of the sampling nozzle; when the sampling nozzle is not connected to the sampling elbow, the outer side of the support block abuts against the inner wall of the semicircular groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up the sampling nozzle assembly, the system calculates the appropriate sampling nozzle diameter, rotates the selected sampling nozzle to the opening of the sampling elbow, lifts the sampling nozzle upward to connect it to the sampling elbow, and can replace sampling nozzles of different sizes as needed, reducing the operation steps of selecting and taking the sampling nozzle, avoiding forgetting to carry the sampling nozzle and causing the detection to be unable to proceed, improving detection efficiency and ensuring the normal progress of the detection.

[0015] 2. By setting the mounting ring and the baffle, the openings of other unused sampling nozzles are shielded by the baffle to prevent smoke and dust from directly entering the channel of the sampling nozzle from the opening, thereby reducing the adhesion of smoke and dust.

[0016] 3. By setting up a heating plate, the sampling nozzle and turntable are preheated before testing, thereby increasing the initial temperature of the sampling nozzle, preventing excessive temperature difference when in contact with the flue gas, and avoiding the occurrence of particulate matter adhering to the sampling nozzle; reducing the blockage of the sampling nozzle opening, facilitating cleaning after testing, and at the same time helping to improve detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the lower side of the sampling nozzle assembly of the present invention; Figure 3 This is a schematic structural diagram of the connection between the sampling nozzle and the sampling elbow of the present invention; Figure 4 Schematic diagram of sampling nozzles of different sizes according to the present invention; Figure 5 It is a structural schematic diagram of the sampling nozzle of the present invention; Figure 6 This is a schematic structural diagram of a second specific embodiment of the present invention; Figure 7 It is an enlarged view of the heating plate of the present invention.

[0018] Description of the numbers in the figure: Guide tube 1, flue gas sampling tube 2, smoke dust sampling tube 3, sampling tube 31, sampling elbow 32, base 33, Pitot tube 4, sampling nozzle assembly 5, fixing seat 51, convex strip 52, turntable 53, mounting groove 54, mounting hole 55, L-shaped connecting rod 56, mounting ring 57, baffle 58, sampling nozzle 6, sampling head 61, support block 62, mounting rod 63, heating plate 7, semicircular groove 71. DETAILED DESCRIPTION

[0019] Specific embodiment 1: Please refer to Figure 1-Figure 5 A thermal power generation carbon emission monitoring device includes a horizontally arranged flow guide pipe 1, a flue gas sampling pipe 2, a smoke dust sampling pipe 3, and a sampling nozzle assembly 5. The flue gas sampling pipe 2 and the smoke dust sampling pipe 3 are respectively connected to the flow guide pipe 1 to transmit the collected flue gas and smoke dust to the detection device for further detection.

[0020] The smoke sampling tube 3 includes a sampling cylinder 31 and a sampling elbow 32. One end of the sampling cylinder 31 is connected to the flow guide tube 1, and the other end of the sampling cylinder 31 is connected to the sampling elbow 32. The sampling elbow 32 opens vertically downward.

[0021] The sampling nozzle assembly 5 includes a fixed base 51, a turntable 53, and an L-shaped connecting rod 56. A curved plate is provided on the side of the fixed base 51 near the turntable 53. The inner diameter of the curved plate matches the outer diameter of the turntable 53, and a ridge 52 is provided on the outer side of the curved plate. A mounting groove 54 is provided on the outer side of the turntable 53, which matches the ridge 52. The ridge 52 nests within the groove 54, allowing the turntable 53 to rotate relative to the fixed base 51.

[0022] Furthermore, a base 33 is provided at the bottom end of the sampling elbow 32 , an outer side of the base 33 is provided with an external thread, and an inner side wall of an opening at one end of the sampling tube 31 is provided with an internal thread, and the base 33 and the sampling tube 31 are threadedly connected.

[0023] Furthermore, a hollow sampling cavity is provided in the sampling cylinder 31 , and a filter cylinder made of glass fiber is placed transversely in the sampling cavity.

[0024] The turntable 53 is arranged on the lower side of the opening of the sampling bend 32. One end of the L-shaped connecting rod 56 is fixedly connected to the sampling bend 32, and the other end is coaxially rotatably connected to the turntable 53. One side of the fixed base 51 is fixedly connected to the sampling bend 32, and the fixed base 51 and the turntable 53 are nested and slidably connected to each other. A plurality of mounting holes 55 are provided on the outer edge of the turntable 53, and sampling nozzles 6 with different opening sizes are respectively provided in the mounting holes 55. The sampling nozzles 6 are detachably connected to the sampling bend 32. When the turntable 53 rotates until the mounting hole 55 is coaxial with the opening of the sampling bend 32, the upper end of the sampling nozzle 6 is connected to the sampling bend 32.

[0025] Among them, the sampling nozzle 6 includes a sampling head 61, a support block 62 and a mounting rod 63. The mounting rod 63 is arranged on the upper side of the support block 62, and the sampling head 61 is arranged on the lower side of the support block 62. The outer diameter of the support block 62 is larger than the mounting hole 55, and the upper side surface of the turntable 53 abuts against the lower side surface of the support block 62 to support the sampling nozzle 6. The outer diameter of the sampling head 61 matches the inner diameter of the mounting hole 55. An external thread is provided on the outer side of the mounting rod 63, and an internal thread is provided at the opening of the sampling bend 32 so that the mounting rod 63 is threadedly connected to the sampling bend 32. It should be noted that, in this embodiment, the length of the mounting rod 63 extending to the upper side of the turntable 52 does not exceed the distance between the L-shaped connecting rod 56 and the turntable 52.

[0026] In this embodiment, the sampling nozzle assembly 5 further includes a mounting ring 57 and a baffle 58. The baffle 58 extends radially along the mounting ring 57. The number of sampling nozzles 6 is n, and the number of baffles 58 is n-1. Figure 4 As shown, in this embodiment, four mounting holes 55 at different positions are evenly provided on the outer edge of the turntable 53, and sampling nozzles 6 with different opening sizes are respectively installed on the different mounting holes 55. A mounting ring 57 is provided on the lower side of the turntable 53, and the mounting ring 57 is nested and connected with the L-shaped connecting rod 56 so that the turntable 53 can drive the sampling nozzles 6 to rotate relative to the baffle 58. When a sampling nozzle 6 is connected to the sampling elbow 32, at least one baffle 58 on the lower side of the remaining sampling nozzle 6 blocks the opening. When the baffle 58 blocks the sampling nozzle 6, the upper side of the baffle 58 abuts against the opening of the sampling nozzle 6. The opening direction of the sampling nozzle 6 is vertically downward. The end of the baffle 58 is at least larger than the outer diameter of the opening of the sampling nozzle 6. It should be noted that the shape of the baffle 58 is adaptively adjusted according to the position of the sampling nozzle 6. This belongs to the existing conventional technical means and will not be repeated here.

[0027] Preferably, in this embodiment, the monitoring device also includes a Pitot tube 4 and a flue gas temperature couple. Two Pitot tubes 4 are positioned outside the sampling tube 1, with one end of each connected to the sampling tube 1. The openings of the two Pitot tubes 4 face opposite directions. The two Pitot tubes 4 are arranged in parallel, with the opening of either Pitot tube 4 oriented in the same direction as the opening of the sampling nozzle 6. A flue gas temperature couple is fixed to the Pitot tube 4 (not shown) and electrically connected to an external detection device via a connecting wire. The Pitot tubes 4 detect the flow rate and direction of the flue gas.

[0028] Working principle: The monitoring device is inserted into the reserved sampling port of the flue to be inspected. The system calculates a sampling nozzle 6 of appropriate caliber based on the pressure conditions, smoke temperature and flow rate in the sampling channel. The selected sampling nozzle 6 is rotated to the opening of the sampling elbow 32 through the turntable 52, and the sampling nozzle 6 is lifted up to connect with the sampling elbow 32. The support block 62 is in contact with the sampling elbow 32; at this time, only one sampling nozzle 6 is taking in air, and the baffle 58 covers the openings of other unused sampling nozzles 6 to prevent smoke from directly entering the channel of the sampling nozzle 6 from the openings, reducing the adhesion of smoke. The sampling nozzles 6 of different sizes can be replaced as needed, reducing the operating steps of selecting and taking the sampling nozzle 6, avoiding forgetting to carry the sampling nozzle 6 and causing the detection to be unable to proceed, thereby improving the detection efficiency and ensuring the normal progress of the detection.

[0029] Specific embodiment 2: Please refer to Figure 6-Figure 7 This embodiment also provides a thermal power generation carbon emission monitoring device. Similarities with the first embodiment are not repeated here. The difference is that the monitoring device further includes a heating plate 7. The heating plate 7 is circular and positioned above the turntable 53. Rotation of the turntable 53 drives the heating plate 7 with it. A through-hole is defined in the center of the heating plate 7, which is nested on the outside of an L-shaped connecting rod 56. The heating plate 7 heats the turntable 53 and is electrically connected to an external power supply via a connecting wire.

[0030] The outer edge of the heating plate 7 is defined by several semicircular grooves 71, which nest within the outer sides of the support block 62 of the sampling nozzle 6. When the sampling nozzle 6 is not connected to the sampling elbow 32, the outer side of the support block 62 abuts against the inner sidewalls of the semicircular grooves 71. After heating the sampling nozzle assembly 5, the inspector must wear heat-insulating gloves for any subsequent handling of the turntable 52 and sampling nozzle 6.

[0031] By setting up the heating plate 7, the sampling nozzle 6 and the turntable 58 are preheated before the test, thereby increasing the initial temperature of the sampling nozzle 6, preventing excessive temperature difference when in contact with the flue gas, and avoiding the occurrence of particulate matter adhering to the sampling nozzle; reducing the blockage of the opening of the sampling nozzle 6, facilitating cleaning after the test, and at the same time helping to improve the accuracy of the test.

Claims

1. A thermal power generation carbon emission monitoring device, characterized by: The invention comprises a horizontally arranged flow guide pipe (1), a smoke sampling pipe (2), a smoke sampling pipe (3) and a sampling nozzle assembly (5); the smoke sampling pipe (2) and the smoke sampling pipe (3) are respectively connected to the flow guide pipe (1); the smoke sampling pipe (3) comprises a sampling cylinder (31) and a sampling elbow (32); one end of the sampling cylinder (31) is connected to the flow guide pipe (1), and the other end of the sampling cylinder (31) is connected to the sampling elbow (32); the sampling elbow (32) opens vertically downward; the sampling nozzle assembly (5) comprises a fixing seat (51), a rotating disk (53) and an L-shaped connecting rod (56); the rotating disk (53) is arranged at the lower side of the opening of the sampling elbow (32); One end of the connecting rod (56) is fixedly connected to the sampling bend (32), and the other end is coaxially connected to the turntable (53); one side of the fixed seat (51) is fixedly connected to the sampling bend (32), and the fixed seat (51) and the turntable (53) are nested and slidably connected to each other; a plurality of mounting holes (55) are provided on the outer edge of the turntable (53), and sampling nozzles (6) of different opening sizes are respectively provided in the mounting holes (55), and the sampling nozzles (6) are detachably connected to the sampling bend (32); when the turntable (53) rotates until the mounting holes (55) and the opening of the sampling bend (32) are coaxial, the upper end of the sampling nozzle (6) is connected to the sampling bend (32).

2. The thermal power generation carbon emission monitoring device according to claim 1, characterized in that: The sampling nozzle (6) includes a sampling head (61), a support block (62) and a mounting rod (63); the mounting rod (63) is arranged on the upper side of the support block (62), and the sampling head (61) is arranged on the lower side of the support block (62); the outer diameter of the support block (62) is larger than the mounting hole (55); the upper side of the turntable (53) abuts against the lower side of the support block (62) to support the sampling nozzle (6); the outer diameter of the sampling head (61) matches the inner diameter of the mounting hole (55); the outer side of the mounting rod (63) is provided with an external thread, and the opening of the sampling elbow (32) is provided with an internal thread, so that the mounting rod (63) and the sampling elbow (32) are threadedly connected.

3. The thermal power generation carbon emission monitoring device according to claim 1, characterized in that: The sampling nozzle assembly (5) further includes a mounting ring (57) and a baffle (58); the baffle (58) extends radially along the mounting ring (57); the number of the sampling nozzles (6) is n, and the number of the baffles (58) is n-(1); the mounting ring (57) is arranged on the lower side of the turntable (53), and the mounting ring (57) is nested and connected with the L-shaped connecting rod (56) so that the turntable (53) can drive the sampling nozzles (6) to rotate relative to the baffle (58); when one sampling nozzle (6) is connected to the sampling elbow (32), at least one baffle (58) on the lower side of the remaining sampling nozzles (6) blocks the opening.

4. The thermal power generation carbon emission monitoring device according to claim 3, characterized in that: When the blocking bar (58) blocks the sampling nozzle (6), the upper side of the blocking bar (58) abuts against the opening of the sampling nozzle (6); the opening direction of the sampling nozzle (6) is vertically downward; and the end of the blocking bar (58) is at least larger than the outer diameter of the opening of the sampling nozzle (6).

5. The thermal power generation carbon emission monitoring device according to claim 1, characterized in that: A curved plate is provided on one side of the fixed seat (51) close to the turntable (53), the inner diameter of the curved plate matches the outer diameter of the turntable (53), and a convex strip (52) is provided on the outer side of the curved plate; a mounting groove (54) is provided on the outer side of the turntable (53), the mounting groove (54) matches the convex strip (52), and the convex strip (52) and the mounting groove (54) are nested, so that the turntable (53) can rotate relative to the fixed seat (51).

6. The thermal power generation carbon emission monitoring device according to claim 1, characterized in that: A base (33) is provided at the bottom end of the sampling elbow (32), an outer side of the base (33) is provided with an external thread, an inner side wall of an opening at one end of the sampling barrel (31) is provided with an internal thread, and the base (33) and the sampling barrel (31) are threadedly connected.

7. The thermal power generation carbon emission monitoring device according to claim 1, characterized in that: A hollow sampling cavity is provided in the sampling cylinder (31), and a filter cylinder made of glass fiber is placed transversely in the sampling cavity.

8. The thermal power generation carbon emission monitoring device according to claim 1, characterized in that: It also includes a Pitot tube (4) and a smoke temperature thermocouple; the two Pitot tubes (4) are arranged outside the guide tube (1), one end of the Pitot tube (4) is connected to the guide tube (1), and the opening directions of the two Pitot tubes (4) are opposite; the two Pitot tubes (4) are arranged in parallel, and the opening direction of any one of the Pitot tubes (4) is in the same direction as the opening direction of the sampling nozzle (6); the smoke temperature thermocouple is fixedly arranged on the Pitot tube (4), and the smoke temperature thermocouple is electrically connected to the external detection equipment through a connecting line.

9. The thermal power generation carbon emission monitoring device according to claim 2, characterized in that: The heating plate (7) is also included; the heating plate (7) is a circular structure, and the heating plate (7) is arranged on the upper side of the turntable (53), and when the turntable (53) rotates, the heating plate (7) is driven to rotate; a through hole is opened in the center of the heating plate (7), and the through hole is nested and arranged on the outside of the L-shaped connecting rod (56); the heating plate (7) is used to heat the turntable (53), and the heating plate (7) is electrically connected to the external power supply through a connecting line.

10. The thermal power generation carbon emission monitoring device according to claim 9, characterized in that: The outer edge of the heating plate (7) is provided with a plurality of semicircular grooves (71), which are respectively nested on the outer sides of the support blocks (62) of the sampling nozzle (6); when the sampling nozzle (6) is not connected to the sampling elbow (32), the outer sides of the support blocks (62) abut against the inner side walls of the semicircular grooves (71).

Images