Waste gas detection device for thermal power generation

Abstract

The waste gas detection device for thermal power generation comprises a detection box, a capacity adjusting plate is arranged in the detection box, a detection head is arranged at the upper end of the capacity adjusting plate, and the capacity adjusting plate is driven by a lifting mechanism to ascend and descend; an opening is formed in the upper end of the detection box, an upper cover of a detachable structure is arranged at the opening, an air inlet hole and an air outlet hole are formed in the end face of the upper cover, and one-way valves are arranged in the air inlet hole and the air outlet hole; an air inlet filtering assembly is arranged at the upper end of the air inlet hole, and an exhaust filtering assembly is arranged at the upper end of the exhaust hole. The storage capacity of the detection box can be adjusted through the capacity adjusting plate; the detachable upper cover is arranged, so that the upper cover can be conveniently opened, and the interior of the detection box can be conveniently cleaned; the sampled gas is filtered through the gas inlet filtering assembly, the filtered waste gas enters the detection box, and the content of harmful gas in the waste gas can be detected through the detection head.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas detection, and in particular to a waste gas detection device for thermal power generation. Background Art

[0002] Thermal power generation is a method of generating electricity by using the heat energy generated by the combustion of combustible materials and converting it into electrical energy through a power generation device. my country's thermal power generation is mainly based on coal-fired power. Coal resources are abundant, and thermal power generation occupies an important position in China's energy structure. The basic production process of thermal power generation is that the fuel heats water when it burns to form high-temperature and high-pressure superheated steam, and then the steam drives the turbine to rotate, which in turn drives the generator to generate electricity. Thermal power stations will produce a variety of exhaust gas pollutants when burning coal or other fossil fuels, including particulate matter, sulfur dioxide, nitrogen oxides, mercury and its compounds. In order to control the emission of these pollutants and reduce the impact on the environment, it is necessary to monitor the exhaust gas of thermal power stations.

[0003] When testing the exhaust gas generated by thermal power generation, the fly ash contained in the exhaust gas needs to be filtered out separately, which results in many operating steps in the testing process, and is not convenient and integrated enough to use. The volume of the detection box for detecting the exhaust gas is fixed and cannot be adjusted according to the test situation, which is not flexible enough to use. The detection box is mostly in a closed state, which is not convenient for cleaning the inside, affecting the next test data. Summary of the invention

[0004] The object of the present invention is to provide an exhaust gas detection device for thermal power generation to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an exhaust gas detection device for thermal power generation, comprising a detection box, a capacity adjustment plate is provided inside the detection box, a detection head is provided at the upper end of the capacity adjustment plate, and the capacity adjustment plate is driven to rise and fall by a lifting mechanism; The upper end of the detection box is provided with an opening, and a detachable upper cover is provided at the opening, an air inlet hole and an air outlet hole are provided on the end surface of the upper cover, and a one-way valve is provided in each of the air inlet hole and the air outlet hole; An air intake filter assembly is provided at the upper end of the air intake hole, and an exhaust filter assembly is provided at the upper end of the exhaust hole; Among them, the air intake assembly includes an air intake cylinder, a filter bracket, a fly ash filter, a spring and an air intake nozzle. The air intake cylinder is arranged at the upper end of the air intake hole, the spring is located at the bottom of the air intake cylinder, the filter bracket is movably arranged at the upper end of the spring, the air intake nozzle is located at the upper end of the filter bracket, and the air intake nozzle and the air intake cylinder are fixedly installed by threads. The fly ash filter is in the shape of a round tube and is sleeved on the outside of the filter bracket.

[0006] Preferably, the lifting mechanism includes a round rack, a gear and a motor, the motor is fixedly mounted on a fixed bracket at the bottom of the detection box, the gear is fixedly connected to the output end of the motor, one end of the round rack is fixedly mounted on the lower end of the capacity adjustment plate, and the round rack is meshingly connected to the gear.

[0007] Preferably, a mounting plate is fixedly mounted on the upper end of the capacity adjustment plate, and a conduit is provided at the lower end of the mounting plate, and the conduit passes through the capacity adjustment plate and the bottom of the detection box; The bottom of the detection head is connected with a detection line, and the detection line is located inside the catheter.

[0008] Preferably, an outer edge is provided at the opening of the upper end of the detection box, a plurality of clamping blocks are provided in the radial direction of the outer edge, a plurality of clamping grooves matching the clamping blocks are provided on the side of the upper cover, and the clamping blocks are clamped with the clamping grooves; A limiting block for limiting the position of the card block is provided on one side of the card block; The upper end of the outer edge is provided with a sealing pattern, and the lower end of the upper cover is provided with a sealing ring, and the sealing ring is in contact with the upper end of the outer edge.

[0009] Preferably, the exhaust assembly includes an exhaust pipe, an exhaust filter and an exhaust cover, the exhaust pipe is located at the upper end of the exhaust hole, the exhaust filter is movably arranged inside the exhaust pipe, and the exhaust cover is installed on the upper end of the exhaust pipe through threads.

[0010] Preferably, an observation window is provided in the radial direction of the detection box, and a capacity scale line is provided outside the observation window.

[0011] Preferably, a sealing member is provided on the outside of the capacity regulating plate.

[0012] Preferably, a countersunk hole is provided at the lower end of the upper cover, and the countersunk hole corresponds to the detection head up and down.

[0013] Preferably, a plurality of supporting legs are provided at the bottom of the detection box, and a bottom plate is provided at the bottom of the supporting legs.

[0014] Preferably, a lower shell is provided between the detection box and the bottom plate, and a heat dissipation hole array is provided on the surface of the lower shell.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention can adjust the storage capacity of the detection box through the capacity adjustment plate. When the capacity adjustment plate moves downward, the capacity of the detection box will gradually increase, and the capacity of the detection box can be adjusted according to actual detection requirements. A detachable upper cover is provided to facilitate opening the upper cover, so as to facilitate cleaning of the inside of the test box. The upper cover can be closed or opened by engaging or opening the card block and the card slot. After the card block and the card slot are engaged, the sealing pattern and the sealing ring are squeezed so that the upper cover can be sealed with the test box. The sampled gas is filtered through the air intake filter assembly so that the fly ash produced by thermal power generation is filtered inside the air intake filter assembly. The fly ash in the filter bracket can be cleaned out by disassembling the filter bracket and the fly ash filter. The combustion conditions of the combustibles in thermal power generation can be analyzed by weighing and detecting the fly ash. The filtered exhaust gas enters the detection box and the content of harmful gases in the exhaust gas can be detected through the detection head. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front cross-sectional view of the present invention; Figure 3 is a side cross-sectional view of the present invention; Figure 4 For the present invention Figure 3 Detailed enlarged view of point A in the middle; Figure 5 An exploded view of the present invention; Figure 6 For the present invention Figure 5 Detailed enlarged view of point B in the middle.

[0017] In the figure: 1. test box; 11. support leg; 12. bottom plate; 13. lower shell; 14. observation window; 15. capacity scale line; 2. adjustment plate; 21. round rack; 22. gear; 23. motor; 24. mounting plate; 25. guide tube; 26. countersunk hole; 27. seal; 3. test head; 31. test line; 4. upper cover; 5. air inlet hole; 51. air inlet cylinder; 52. filter bracket; 53. fly ash filter; 54. spring; 55. air inlet nozzle; 6. exhaust hole; 61. exhaust cylinder; 62. exhaust filter; 63. exhaust cover; 7. one-way valve; 8. outer edge; 81. block; 82. slot; 83. limit block; 84. sealing pattern; 85. sealing ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-6 The present invention provides a technical solution: an exhaust gas detection device for thermal power generation, comprising a detection box 1, a capacity adjustment plate 2 is provided inside the detection box 1, a detection head 3 is provided at the upper end of the capacity adjustment plate 2, and the capacity adjustment plate 2 is driven to rise and fall by a lifting mechanism; The lifting mechanism includes a round rack 21, a gear 22 and a motor 23. The motor 23 is fixedly mounted on a fixed bracket at the bottom of the detection box 1. The gear 22 is fixedly connected to the output end of the motor 23. One end of the round rack 21 is fixedly mounted on the lower end of the capacity adjustment plate 2, and the round rack 21 is meshed with the gear 22.

[0020] Among them, the detection box 1 is used to hold the exhaust gas to be detected, and the capacity adjusting plate 2 can adjust the storage capacity of the detection box 1. When the capacity adjusting plate 2 moves downward, the capacity of the detection box 1 will gradually increase, and the capacity of the detection box 1 can be adjusted according to the actual detection needs. In actual operation, the motor 23 drives the gear 22 to rotate, and the gear 22 drives the round rack 21 to move downward, so that the round rack 21 drives the capacity adjusting plate 2 to move downward. The outer sleeve of the capacity adjusting plate 2 is provided with a sealing member 27, so that the capacity adjusting plate 2 can seal the detection box 1, so that the capacity adjusting plate 2 divides the detection box 1 into two upper and lower empty compartments.

[0021] An opening is provided at the upper end of the detection box 1, and a detachable upper cover 4 is provided at the opening; An outer edge 8 is provided at the upper opening of the detection box 1, and a plurality of clamping blocks 81 are provided in the radial direction of the outer edge 8. A plurality of clamping grooves 82 matching the clamping blocks 81 are provided on the side of the upper cover 4, and the clamping blocks 81 are clamped with the clamping grooves 82. A limiting block 83 is provided on one side of the clamping block 81 for limiting the position of the clamping block 81; A sealing pattern 84 is provided at the upper end of the outer edge 8 , and a sealing ring 85 is provided at the lower end of the upper cover 4 , and the sealing ring 85 abuts against the upper end of the outer edge 8 .

[0022] Among them, the provision of a detachable upper cover 4 can facilitate opening the upper cover 4, thereby facilitating cleaning of the inside of the detection box 1. The upper cover 4 can be closed or opened by engaging or opening the block 81 and the slot 82. After the block 81 and the slot 82 are engaged, the sealing pattern 84 and the sealing ring 85 are squeezed so that the upper cover 4 can be sealed with the detection box 1. During specific operation, the upper cover 4 is buckled on the opening at the upper end of the detection box 1 so that the lower end of the sealing ring 85 is in contact with the upper end of the outer edge 8, so that the slot 82 is located on one side of the block 81, and then the upper cover 4 is rotated so that the slot 82 slides into the block 81. When one side of the slot 82 touches the limit block 83, the upper cover 4 stops rotating. At this time, the slot 82 is engaged with the block 81. Since the sealing ring 85 is elastic, the upper cover 4 and the detection box 1 can be tightly connected and the detection box 1 can be sealed.

[0023] An air inlet 5 and an air outlet 6 are provided on the end surface of the upper cover 4 , and a one-way valve 7 is provided in each of the air inlet 5 and the air outlet 6 .

[0024] An air intake filter assembly is provided at the upper end of the air intake hole 5, and the air intake assembly includes an air intake cylinder 51, a filter bracket 52, a fly ash filter 53, a spring 54 and an air intake nozzle 55. The air intake cylinder 51 is arranged at the upper end of the air intake hole 5, the spring 54 is located at the bottom of the air intake cylinder 51, the filter bracket 52 is movably arranged at the upper end of the spring 54, the air intake nozzle 55 is located at the upper end of the filter bracket 52, and the air intake nozzle 55 is fixed to the air intake cylinder 51 by threads, and the fly ash filter 53 is in the shape of a round tube and is sleeved on the outside of the filter bracket 52.

[0025] Among them, the air inlet 5 is used to intake air into the detection box 1, and the sampled gas is filtered through the air inlet filter assembly, so that the fly ash generated by thermal power generation is filtered inside the air inlet filter assembly, the air inlet nozzle 55 is used to connect the sampling bottle or sampling bag, the fly ash filter 53 is used to filter the fly ash generated by thermal power generation, and the filter bracket 52 is used to support the fly ash filter 53. The filter bracket 52 and the fly ash filter 53 can be disassembled. During the inspection, the upper cover 4 is first installed on the upper end of the detection box 1, and then the capacity adjustment plate 2 is driven to rise, so that the drive capacity adjustment plate 2 is attached to the upper cover 4, so that the air inside the detection box 1 is discharged, and then the sampling bottle or sampling bag is connected to the air inlet nozzle 55, and the capacity adjustment plate 2 is driven to descend, so that the exhaust gas is discharged from the air inlet nozzle 5 5 enters the filter bracket 52, and then enters the air intake cylinder 51 after being filtered by the fly ash filter 53. At this time, the fly ash contained in the exhaust gas is filtered into the filter bracket 52, and the filtered exhaust gas enters the detection box 1 through the air intake hole 5 and the one-way valve 7. Since the air intake nozzle 55 is threadedly connected to the air intake cylinder 51, the air intake nozzle 55 is rotated so that the air intake nozzle 55 is removed, so that the filter bracket 52 and the fly ash filter 53 can be taken out from the air intake cylinder 51, so that the fly ash in the filter bracket 52 can be cleaned out, and the combustion condition of the combustibles of thermal power generation can be analyzed by weighing and detecting the fly ash. By setting the spring 54, a gap can be made at the bottom of the air intake cylinder 51, so that the exhaust gas can enter the air intake hole 5 from the air intake cylinder 51.

[0026] A mounting plate 24 is fixedly mounted on the upper end of the capacity adjustment plate 2, and a conduit 25 is provided at the lower end of the mounting plate 24. The conduit 25 passes through the capacity adjustment plate 2 and the bottom of the detection box 1; A detection line 31 is connected to the bottom of the detection head 3, and the detection line 31 is located inside the catheter 25; A countersunk hole 26 is provided at the lower end of the upper cover 4 , and the countersunk hole 26 corresponds to the detection head 3 up and down.

[0027] An observation window 14 is provided in the radial direction of the detection box 1 , and a capacity scale line 15 is provided outside the observation window 14 .

[0028] Among them, the detection head 3 is used to detect the content of harmful gases in the exhaust gas, the conduit 25 is used to protect the detection line 31, and when the capacity adjustment plate 2 is in contact with the upper cover 4, the detection head 3 is located in the countersunk hole 26 to prevent the detection head 3 from interfering with the upper cover 4. The exhaust gas volume in the detection box 1 can be read through the observation window 14 and the capacity scale line 15.

[0029] An exhaust filter assembly is provided at the upper end of the exhaust hole 6, and the exhaust assembly includes an exhaust pipe 61, an exhaust filter 62 and an exhaust cover 63. The exhaust pipe 61 is located at the upper end of the exhaust hole 6, the exhaust filter 62 is movably arranged inside the exhaust pipe 61, and the exhaust cover 63 is installed at the upper end of the exhaust pipe 61 by threads.

[0030] Among them, the exhaust hole 6 is used to discharge the exhaust gas inside the detection box 1. After the detection is completed, the capacity adjustment plate 2 is driven to rise to exhaust the exhaust gas in the detection box 1. The exhaust gas enters the exhaust pipe 61 from the one-way valve 7 and the exhaust hole 6, and is filtered by the exhaust filter 62 before being discharged. The exhaust filter 62 can filter harmful substances in the exhaust gas to prevent environmental pollution.

[0031] A plurality of supporting legs 11 are provided at the bottom of the detection box 1 , a bottom plate 12 is provided at the bottom of the supporting legs 11 , a lower shell 13 is provided between the detection box 1 and the bottom plate 12 , and a heat dissipation hole array is provided on the surface of the lower shell 13 .

[0032] The working principle and use process of the present invention: During the inspection, the upper cover 4 is first installed on the upper end of the inspection box 1, and then the capacity adjustment plate 2 is driven to rise so that the capacity adjustment plate 2 is driven to fit the upper cover 4, so that the air inside the inspection box 1 is discharged, and then the sampling bottle or sampling bag is connected to the air inlet nozzle 55, and the capacity adjustment plate 2 is driven to descend so that the exhaust gas enters the inspection box 1 from the air intake filter assembly, and the fly ash in the exhaust gas is filtered by the air intake filter assembly in the filter bracket 52. The content of harmful gases in the exhaust gas can be detected by the detection head 3. After the inspection is completed, the capacity adjustment plate 2 is driven to rise to intake and exhaust the exhaust gas in the inspection box 1. The exhaust gas enters the exhaust pipe 61 from the one-way valve 7 and the exhaust hole 6, and is discharged after being filtered by the exhaust filter 62. The exhaust filter 62 can filter harmful substances in the exhaust gas to prevent environmental pollution. In addition, by disassembling the filter bracket 52 and the fly ash filter 53, the fly ash in the filter bracket 52 can be cleaned out, and the combustion conditions of the combustibles of thermal power generation can be analyzed by weighing and detecting the fly ash.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas detection device for thermal power generation, comprising a detection box (1), characterized in that: The detection box (1) is provided with a capacity adjustment plate (2) inside, a detection head (3) is provided at the upper end of the capacity adjustment plate (2), and the capacity adjustment plate (2) is driven to rise and fall by a lifting mechanism; The detection box (1) is provided with an opening at the upper end, and a detachable upper cover (4) is provided at the opening; an air inlet (5) and an air outlet (6) are provided on the end surface of the upper cover (4); and a one-way valve (7) is provided in each of the air inlet (5) and the air outlet (6); An air intake filter assembly is provided at the upper end of the air intake hole (5), and an exhaust filter assembly is provided at the upper end of the exhaust hole (6); The air intake assembly comprises an air intake cylinder (51), a filter bracket (52), a fly ash filter (53), a spring (54) and an air intake nozzle (55); the air intake cylinder (51) is arranged at the upper end of the air intake hole (5); the spring (54) is located at the bottom of the air intake cylinder (51); the filter bracket (52) is movably arranged at the upper end of the spring (54); the air intake nozzle (55) is located at the upper end of the filter bracket (52); the air intake nozzle (55) is fixedly mounted on the air intake cylinder (51) by means of threads; and the fly ash filter (53) is in the shape of a round tube and is sleeved on the outside of the filter bracket (52).

2. The exhaust gas detection device for thermal power generation according to claim 1, characterized in that: The lifting mechanism comprises a round rack (21), a gear (22) and a motor (23); the motor (23) is fixedly mounted on a fixed bracket at the bottom of the detection box (1); the gear (22) is fixedly connected to an output end of the motor (23); one end of the round rack (21) is fixedly mounted on the lower end of the capacity adjustment plate (2), and the round rack (21) is meshingly connected to the gear (22).

3. The exhaust gas detection device for thermal power generation according to claim 1, characterized in that: A mounting plate (24) is fixedly mounted on the upper end of the capacity adjustment plate (2), a guide tube (25) is provided at the lower end of the mounting plate (24), and the guide tube (25) passes through the capacity adjustment plate (2) and the bottom of the detection box (1); The bottom of the detection head (3) is connected to a detection line (31), and the detection line (31) is located inside the catheter (25).

4. The exhaust gas detection device for thermal power generation according to claim 1, characterized in that: An outer edge (8) is provided at the upper opening of the detection box (1); a plurality of clamping blocks (81) are provided in the radial direction of the outer edge (8); a plurality of clamping grooves (82) matching the clamping blocks (81) are provided on the side surface of the upper cover (4); and the clamping blocks (81) are clamped with the clamping grooves (82); A limiting block (83) for limiting the position of the blocking block (81) is provided on one side of the blocking block (81); The upper end of the outer edge (8) is provided with a sealing pattern (84), and the lower end of the upper cover (4) is provided with a sealing ring (85), and the sealing ring (85) abuts against the upper end of the outer edge (8).

5. The exhaust gas detection device for thermal power generation according to claim 1, characterized in that: The exhaust assembly comprises an exhaust pipe (61), an exhaust filter (62) and an exhaust cover (63); the exhaust pipe (61) is located at the upper end of the exhaust hole (6); the exhaust filter (62) is movably arranged inside the exhaust pipe (61); and the exhaust cover (63) is installed on the upper end of the exhaust pipe (61) via threads.

6. The exhaust gas detection device for thermal power generation according to claim 1, characterized in that: The detection box (1) is provided with an observation window (14) in the radial direction, and a capacity scale line (15) is provided outside the observation window (14).

7. The exhaust gas detection device for thermal power generation according to claim 1, characterized in that: The capacity adjustment plate (2) is externally sleeved with a sealing member (27).

8. The exhaust gas detection device for thermal power generation according to claim 1, characterized in that: A countersunk hole (26) is provided at the lower end of the upper cover (4), and the countersunk hole (26) corresponds to the detection head (3) in upper and lower directions.

9. The exhaust gas detection device for thermal power generation according to claim 1, characterized in that: A plurality of supporting legs (11) are provided at the bottom of the detection box (1), and a bottom plate (12) is provided at the bottom of the supporting legs (11).

10. The exhaust gas detection device for thermal power generation according to claim 1, characterized in that: A lower shell (13) is provided between the detection box (1) and the bottom plate (12), and a surface array of heat dissipation holes is provided on the lower shell (13).

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