Flue shunting device

Abstract

The invention relates to the technical field of flue flow dividing, in particular to a flue flow dividing device which comprises a conveying mechanism, a flow dividing mechanism and a flow dividing mechanism, and the conveying mechanism comprises an inlet channel, an upper channel communicated with the inlet channel and a lower channel arranged on the upper channel; the rotating part can rotate according to the flowing of the flue gas; the centrifugal swinging part comprises a swinging arm rotationally arranged on the rotating part and a push rod rotationally arranged at the end part of the swinging arm, and further comprises a counterweight ball arranged on the swinging arm; the pushing rod can push the pushing part to generate displacement according to the rotating speed of the centrifugal swinging part; the piston piece is connected with the pushing part; the storage part is arranged outside the piston part, and an upper cavity and a lower cavity are formed in the storage part; the faster the flow speed of the flue gas in the upper channel is, the larger the opening angle of the flow guide plate is, so that the flue is automatically adjusted for shunting according to the change of the flow speed of the flue gas.

Description

Technical Field

[0001] The present invention relates to the technical field of flue diversion, in particular to a flue diversion device. Background Art

[0002] The flue of a thermal power plant is mainly used to discharge flue gas after combustion. In order to ensure the flue gas treatment effect and extend the service life of the flue, the flue gas in the flue is usually required to maintain a relatively stable flow rate and flow. However, in actual use, the flue gas velocity is often difficult to accurately control. For example, due to dust blockage or accumulation, the change of the flue cross-section will affect the flue gas velocity, as well as the change of the amount of flue gas discharged due to combustion. It may also be due to fan failure or improper adjustment, etc., which will affect the circulation of flue gas.

[0003] However, an abnormal increase in the flue gas flow rate will have a significant impact on equipment operation, environmental emissions, system efficiency and other aspects. For example, when the flue gas passes through the electrostatic precipitator, the increased flow rate will shorten the residence time of the flue gas in the electric field, and the dust particles will not have time to be charged and adsorbed, resulting in a decrease in dust removal efficiency and excessive smoke emission concentration. During desulfurization and denitrification treatment, the reaction time may be insufficient. In addition, it will cause the load on the flue gas pipeline to increase, reducing the service life of the equipment.

[0004] Therefore, a flue diversion device is proposed to automatically adjust the flue for diversion according to the change of flue gas flow velocity. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is that an abnormal increase in the flow velocity of the flue gas in the flue will have a negative impact on the flue gas treatment.

[0006] The above technical problems are solved by the following technical solutions: The present invention proposes a flue diversion device, comprising:

[0007] A conveying mechanism comprising an entry channel, an upper channel communicating with the entry channel, and a lower channel disposed on the upper channel;

[0008] a rotating member capable of rotating according to the flow of smoke;

[0009] a centrifugal swing member comprising a swing arm rotatably mounted on the rotating member, a push rod rotatably mounted on an end of the swing arm, and a weighted ball mounted on the swing arm;

[0010] A pusher portion, wherein the pusher rod is capable of pushing the pusher portion to generate displacement according to the rotation speed of the centrifugal swinging member;

[0011] a piston member connected to the pushing portion;

[0012] a storage element, which is disposed outside the piston element and has an upper chamber and a lower chamber therein;

[0013] An output member comprising a first end sleeve and a second end sleeve, and a push pin slidably disposed in the first end sleeve and the second end sleeve;

[0014] A connecting rod connected to the push column;

[0015] a guide plate rotatably disposed in the upper channel;

[0016] The sliding of the push column can control the rotation of the guide plate through the connecting rod.

[0017] In a preferred embodiment of the flue diversion device of the present invention: a limit seat is provided in the conveying mechanism, and the rotating member includes a rotating shaft rotatably provided in the limit seat, and a fan blade provided on an outer wall of the rotating shaft;

[0018] A positioning shaft is provided on the rotating shaft, and the swing arm is rotatably connected to the rotating shaft through the positioning shaft.

[0019] In a preferred embodiment of the flue diversion device of the present invention: a sliding sleeve is provided in the conveying mechanism;

[0020] The pushing portion comprises a resistance ring rotatably arranged on the end of the push rod, and a clamping block arranged on the resistance ring, and a sliding column is arranged on the resistance ring.

[0021] In a preferred embodiment of the flue diversion device of the present invention: the piston member includes a push rod slidably arranged in the rotating shaft, a piston column arranged at the end of the push rod, and a push block arranged at the end of the push rod.

[0022] In a preferred embodiment of the flue diversion device of the present invention, the piston column is slidably arranged in the storage element, and the top block and the clamping block are rotationally connected.

[0023] In a preferred embodiment of the flue diversion device of the present invention: a spring is provided at one end of the swing arm, and the swing arm is connected to a weighted ball via the spring;

[0024] The end of the sliding column is provided with a hexagonal block.

[0025] In a preferred embodiment of the flue diversion device of the present invention: the storage element is provided with an upper connecting pipe and a lower connecting pipe;

[0026] A first cavity is provided in the first end sleeve, and a second cavity is provided in the second end sleeve.

[0027] In a preferred embodiment of the flue diversion device of the present invention: the upper connecting pipe connects the upper chamber and the first cavity;

[0028] The lower connecting pipe connects the lower chamber and the second cavity.

[0029] In a preferred embodiment of the flue diversion device of the present invention: the connecting rod member includes a pull rod rotatably mounted on the push column, and a connecting rod rotatably mounted on the pull rod;

[0030] The connecting rod and the guide plate are rotatably connected.

[0031] In a preferred embodiment of the flue diversion device of the present invention, a plurality of guide plates are provided in a horizontal array, and the plurality of guide plates are rotatably connected to the connecting rod.

[0032] The beneficial effect of the present invention is that when the flow rate of the flue gas in the flue increases abnormally, the rotation speed of the rotating part increases, and the centrifugal swinging part controls the piston part to move, and then controls the guide plate to deflect and open. The faster the flue gas flow rate in the upper channel, the larger the opening angle of the guide plate, so as to automatically adjust the flue gas for diversion according to the change of the flue gas flow rate. When the flow rate of the flue gas decreases, the rotation speed of the rotating part also decreases. At this time, under the action of the gravity of the counterweight ball, the piston part will slide up, so that the opening angle of the guide plate is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention, and are not intended to limit the present invention.

[0034] Figure 1 The figure shows the overall structural diagram of the flue diversion device.

[0035] Figure 2 A schematic structural diagram of the rotating part and the centrifugal swinging part of the flue diverter device is shown.

[0036] Figure 3 A partial cross-sectional structural diagram of a flue diversion device is shown.

[0037] Figure 4 A schematic diagram of the internal structure of the flue diversion device is shown.

[0038] In the figure: 1. conveying mechanism; 11. entry channel; 12. upper channel; 121. limit seat; 122. sliding sleeve; 13. lower channel; 2. rotating member; 21. rotating shaft; 22. fan blade; 23. positioning shaft; 3. centrifugal swing member; 31. swing arm; 32. counterweight ball; 33. push rod; 34. spring; 4. pushing part; 41. contact ring; 42. clamping block; 43. sliding column; 44. Hexagonal block; 5. Piston member; 51. Push rod; 52. Piston column; 53. Push block; 6. Storage member; 61. Upper chamber; 62. Lower chamber; 63. Upper connecting pipe; 64. Lower connecting pipe; 7. Output member; 71. First end sleeve; 711. First cavity; 72. Second end sleeve; 721. Second cavity; 73. Push column; 8. Connecting rod member; 81. Pull rod; 82. Connecting rod; 9. Guide plate. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0040] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0041] Reference Figures 1 to 4 This embodiment provides a flue diversion device, including a conveying mechanism 1, which includes an entry channel 11, an upper channel 12 connected to the entry channel 11, and a lower channel 13 arranged on the upper channel 12; the entry channel 11 is an entry port for smoke, and the upper channel 12 is a channel for conveying smoke, wherein the lower channel 13 is arranged directly below the upper channel 12.

[0042] The rotating member 2 can rotate according to the flow of the flue gas; the flue gas can push the rotating member 2 to rotate when it flows. The faster the flow speed of the flue gas, the faster the rotation speed of the rotating member 2.

[0043] The centrifugal swinging member 3 includes a swinging arm 31 rotatably arranged on the rotating member 2, and a push rod 33 rotatably arranged at the end of the swinging arm 31, and also includes a counterweight ball 32 arranged on the swinging arm 31; the rotating member 2 can drive the centrifugal swinging member 3 to rotate together when rotating. When the centrifugal swinging member 3 rotates, due to the action of centrifugal force, the swinging arm 31 will swing, so that the two counterweight balls 32 move away from each other. That is, the faster the rotation speed of the centrifugal swinging member 3, the greater the centrifugal force of the counterweight ball 32, thereby increasing the swinging angle of the swinging arm 31, and the swinging arm 31 can push the push rod 33 to move when it swings.

[0044] The pushing part 4 and the push rod 33 can push the pushing part 4 to generate displacement according to the rotation speed of the centrifugal swinging part 3; the push rod 33 can drive the pushing part 4 to slide up and down. When the rotation speed of the centrifugal swinging part 3 increases, the distance between the counterweight balls 32 increases, and the swing angle of the swing arm 31 increases, the pushing part 4 will slide down. Conversely, when the rotation speed of the centrifugal swinging part 3 decreases, the distance between the counterweight balls 32 decreases, and the pushing part 4 will slide up.

[0045] The piston member 5 is connected to the pushing portion 4; the upward and downward sliding of the pushing portion 4 can drive the piston member 5 to slide upward or downward.

[0046] The storage member 6 is arranged outside the piston member 5, and is provided with an upper chamber 61 and a lower chamber 62. It should be noted that hydraulic oil or liquid is stored in the storage member 6, and the piston member 5 is slidably arranged in the storage member 6. The piston member 5 divides the storage member 6 into an upper chamber 61 and a lower chamber 62. The hydraulic oil is located in the upper chamber 61 and the lower chamber 62. When the piston member 5 slides, the volume of the upper chamber 61 and the lower chamber 62 can be changed, so that the amount of hydraulic oil changes.

[0047] The output member 7 includes a first end sleeve 71 and a second end sleeve 72, and a push pin 73 slidably arranged in the first end sleeve 71 and the second end sleeve 72; the push pin 73 can slide in the first end sleeve 71 and the second end sleeve 72. It should be noted that the upper chamber 61 and the first end sleeve 71 are connected, and the lower chamber 62 and the second end sleeve 72 are connected. When the piston member 5 slides, the push pin 73 will slide accordingly in the first end sleeve 71 and the second end sleeve 72 by squeezing the hydraulic oil.

[0048] The connecting rod 8 is connected to the pushing column 73; the movement of the pushing column 73 can drive the connecting rod 8 to move.

[0049] The guide plate 9 is rotatably arranged in the upper channel 12; the push column 73 slides and can control the rotation of the guide plate 9 through the connecting rod 8.

[0050] It should be noted that the upper channel 12 and the lower channel 13 are connected, and the two are isolated by the guide plate 9 to separate the upper channel 12 and the lower channel 13. When the guide plate 9 is rotated open, the upper channel 12 and the lower channel 13 will be in a connected state.

[0051] In the initial state, the guide plate 9 is in a closed state. Under the action of the gravity of the counterweight ball 32, the ends of the two swing arms 31 are close to each other. At this time, the pushing part 4 is at the maximum height. When in use, the smoke enters from the inlet channel 11 and is discharged through the upper channel 12.

[0052] When the flue gas flows in the upper channel 12, the flue gas will be able to drive the rotating part 2 to rotate. When the flue gas flow rate is moderate, the rotation speed of the rotating part 2 is also at an appropriate speed. At this time, the centrifugal force on the counterweight ball 32 is small, and the swing arm 31 will not swing.

[0053] When the flow rate of the flue gas increases abnormally, the rotation speed of the rotating member 2 will also increase. At this time, the rotation speed of the centrifugal swing member 3 will also increase, causing the two counterweight balls 32 to move away from each other under the action of centrifugal force, and the swing arm 31 will open, thereby pulling the push part 4 down through the push rod 33, causing the piston member 5 to slide down. The downward movement of the piston member 5 will increase the space in the upper chamber 61 and reduce the space in the lower chamber 62. Therefore, the hydraulic oil in the first end sleeve 71 will be drawn into the upper chamber 61, and the hydraulic oil in the lower chamber 62 will be squeezed out to the second end sleeve 72, which will cause the push column 73 to slide. When the push column 73 slides, Pull the connecting rod 8 to move, thereby controlling the deflection of the guide plate 9. The upper channel 12 and the lower channel 13 are connected through the deflection of the guide plate 9, and the flue gas will be able to be transported through the lower channel 13, thereby reducing the flow rate of the flue gas. In this process, the faster the flue gas flow rate in the upper channel 12, the larger the opening angle of the guide plate 9, so as to automatically adjust the flue gas for diversion according to the change in the flue gas flow rate. When the flow rate of the flue gas decreases, the rotation speed of the rotating part 2 also decreases. At this time, under the action of the gravity of the counterweight ball 32, the piston part 5 will slide up, so that the opening angle of the guide plate 9 is reduced.

[0054] It should be noted that, referring to Figure 3 , Figure 3 In the state shown, the rotating part 2 and the centrifugal swinging part 3 are arranged in the upper channel 12. Therefore, the rotation speed of the centrifugal swinging part 3 is related to the flow velocity in the upper channel 12. Therefore, the opening condition of the guide plate 9 is the increase of the gas flow velocity in the upper channel 12. This method mainly relies on the upper channel 12 to transport the gas. The opening and closing reaction of the guide plate 9 is relatively slow, which can avoid excessive changes in the flow velocity in the upper channel 12.

[0055] Another setting method is to set the rotating part 2 and the centrifugal swinging part 3 in the entrance channel 11, so that the flow velocity of the flue gas in the entrance channel 11 will not change with the opening of the guide plate 9, so that the guide plate 9 can be controlled more sensitively, and the installation position of the rotating part 2 and the centrifugal swinging part 3 can be changed according to needs, which is suitable for different working conditions.

[0056] Reference Figures 1 to 4 As an optional embodiment: a limit seat 121 is provided in the conveying mechanism 1, and the rotating member 2 includes a rotating shaft 21 rotatably provided in the limit seat 121, and a fan blade 22 provided on the outer wall of the rotating shaft 21; when the flue gas flows, it can push the fan blade 22 to rotate, thereby causing the rotating shaft 21 to rotate, and the change in the flue gas flow rate can cause the rotation speed of the rotating shaft 21 to change.

[0057] A positioning shaft 23 is provided on the rotating shaft 21 , and the swing arm 31 is rotatably connected to the rotating shaft 21 via the positioning shaft 23 .

[0058] A sliding sleeve 122 is provided in the conveying mechanism 1;

[0059] The pushing portion 4 includes a resisting ring 41 rotatably mounted on the end of the push rod 33 , and a clamping block 42 mounted on the resisting ring 41 . A sliding post 43 is mounted on the resisting ring 41 .

[0060] The sliding column 43 and the abutment ring 41 are fixedly connected, and the clamping block 42 is in an L-shaped structure.

[0061] When the centrifugal swing member 3 rotates, the slide post 43 rotates together.

[0062] The piston member 5 includes a push rod 51 slidably disposed in the rotating shaft 21 , a piston column 52 disposed at the end of the push rod 51 , and a push block 53 disposed at the end of the push rod 51 .

[0063] An annular groove is provided on the outer wall surface of the top block 53 , which fits with the end of the clamping block 42 . The clamping block 42 and the top block 53 can only rotate relative to each other, and cannot slide axially.

[0064] The piston column 52 is slidably disposed in the storage element 6 , and the top block 53 and the clamping block 42 are rotationally connected.

[0065] The piston rod 52 divides the storage element 6 into two chambers: an upper chamber 61 and a lower chamber 62 .

[0066] A spring 34 is provided at one end of the swing arm 31 , and the swing arm 31 is connected to the counterweight ball 32 via the spring 34 ; a hexagonal block 44 is provided at the end of the sliding column 43 .

[0067] During use, dust particles will accumulate in the flue. Under normal conditions, the rotation speed of the centrifugal swing member 3 driven by the flue gas is limited. When the dust in the flue needs to be cleaned, an electric wrench can be used to connect the sleeve of the electric wrench with the hexagonal block 44. The electric wrench is used to drive the slide column 43 to rotate. The operator then presses down the electric wrench to make the slide column 43 slide down while rotating. Therefore, the downward pressure applied can cooperate with the centrifugal force generated by the rotation of the centrifugal swing member 3 to make the swing arm 31 expand to the maximum expansion state. When the swing arm 31 expands to the maximum expansion state, When the dust is in the conveying mechanism 1, the two weighted balls 32 will be able to knock on the inner wall of the conveying mechanism 1 during the rotation, and cooperate with the buffering of the spring 34 to form a knocking vibration, which will knock down the dust in the conveying mechanism 1, and the rotation of the fan blades 22 can also generate thrust to push the dust to move, making it easier to clean the dust there. At the same time, since the swing arm 31 is in the maximum open state, the guide plate 9 will also be in the open state, and the dust can fall into the lower channel 13. After the dust falls, the position of the sliding column 43 is controlled to make the guide plate 9 in the closed state. At this time, only the lower channel 13 below can be cleaned.

[0068] Reference Figures 1 to 4 As an optional embodiment, the storage element 6 is provided with an upper connecting tube 63 and a lower connecting tube 64. The first end sleeve 71 is provided with a first cavity 711, and the second end sleeve 72 is provided with a second cavity 721. The upper connecting tube 63 connects the upper chamber 61 with the first cavity 711, and the lower connecting tube 64 connects the lower chamber 62 with the second cavity 721.

[0069] The advantage of using hydraulic oil to control the movement of the push rod 73 is that the friction is small when the power is output, and the output force can be adjusted by adjusting the ratio of the end cross-section of the push rod 73 and the end cross-section of the piston rod 52. In addition, the movement of the oil can also have a certain buffering capacity, making the movement process of the piston member 5 smoother.

[0070] The connecting rod member 8 includes a pull rod 81 rotatably mounted on the push column 73 , and a connecting rod 82 rotatably mounted on the pull rod 81 ; the connecting rod 82 is rotatably connected to the guide plate 9 .

[0071] A plurality of guide plates 9 are provided in a horizontal array, and the guide plates 9 are all rotatably connected to the connecting rod 82 .

[0072] During use, when the flue gas flow rate in the flue changes, the rotation speed of the rotating part 2 will also change, so the piston column 52 will move, and the movement of the piston column 52 will cause the push column 73 to move, and then the push column 73 controls the movement of the pull rod 81, and the pull rod 81 pulls the connecting rod 82 to move up and down, controlling multiple guide plates 9 to open and close at the same time.

[0073] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A flue diversion device, characterized in that: include, A conveying mechanism (1) comprising an entry channel (11), an upper channel (12) communicating with the entry channel (11), and a lower channel (13) disposed on the upper channel (12); a rotating member (2) capable of rotating according to the flow of smoke; A centrifugal swing member (3) includes a swing arm (31) rotatably mounted on the rotating member (2), a push rod (33) rotatably mounted on the end of the swing arm (31), and a weighted ball (32) mounted on the swing arm (31); A pushing portion (4), wherein the push rod (33) is capable of pushing the pushing portion (4) to generate displacement according to the rotation speed of the centrifugal swinging member (3); A piston member (5) connected to the pushing portion (4); a storage element (6), which is arranged outside the piston element (5) and has an upper chamber (61) and a lower chamber (62) therein; An output member (7) comprising a first end sleeve (71) and a second end sleeve (72), and a push pin (73) slidably disposed in the first end sleeve (71) and the second end sleeve (72); A connecting rod (8) connected to the push column (73); a guide plate (9) rotatably disposed in the upper channel (12); The push column (73) can slide and control the guide plate (9) to rotate through the connecting rod (8).

2. The flue diversion device according to claim 1, characterized in that: A limiting seat (121) is provided in the conveying mechanism (1), and the rotating member (2) includes a rotating shaft (21) rotatably provided in the limiting seat (121), and a fan blade (22) provided on the outer wall of the rotating shaft (21); A positioning shaft (23) is provided on the rotating shaft (21), and the swing arm (31) is rotatably connected to the rotating shaft (21) via the positioning shaft (23).

3. The flue diversion device according to claim 2, characterized in that: A sliding sleeve (122) is provided in the conveying mechanism (1); The pushing portion (4) comprises a resistance ring (41) rotatably arranged at the end of the push rod (33), and a clamping block (42) arranged on the resistance ring (41), and a sliding column (43) is provided on the resistance ring (41).

4. The flue diversion device according to claim 3, characterized in that: The piston member (5) includes a push rod (51) slidably arranged in the rotating shaft (21), a piston column (52) arranged at the end of the push rod (51), and a push block (53) arranged at the end of the push rod (51).

5. The flue diversion device according to claim 4, characterized in that: The piston column (52) is slidably arranged in the storage element (6), and the top block (53) and the clamping block (42) are rotationally connected.

6. The flue diversion device according to claim 5, characterized in that: One end of the swing arm (31) is provided with a spring (34), and the swing arm (31) is connected to the counterweight ball (32) via the spring (34); The end of the sliding column (43) is provided with a hexagonal block (44).

7. The flue diversion device according to claim 6, characterized in that: The storage element (6) is provided with an upper connecting pipe (63) and a lower connecting pipe (64); A first cavity (711) is provided in the first end sleeve (71), and a second cavity (721) is provided in the second end sleeve (72).

8. The flue diversion device according to claim 7, characterized in that: The upper connecting pipe (63) connects the upper chamber (61) and the first cavity (711); The lower connecting pipe (64) connects the lower chamber (62) and the second cavity (721).

9. The flue diversion device according to claim 8, characterized in that: The connecting rod member (8) includes a pull rod (81) rotatably arranged on the push column (73), and a connecting rod (82) rotatably arranged on the pull rod (81); The connecting rod (82) and the guide plate (9) are rotatably connected.

10. The flue diversion device according to claim 9, characterized in that: A plurality of the guide plates (9) are arranged in a horizontal array, and the plurality of the guide plates (9) are rotatably connected to the connecting rod (82).

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