CN209991474U - Energy-saving flue structure at outlet of induced draft fan - Google Patents

Abstract

The utility model discloses an energy-saving flue structure at the outlet of an induced draft fan, which comprises a chimney, wherein a fixed platform is arranged outside the chimney, a pressure maintaining device is arranged on the top surface of the fixed platform, a flue device is connected to the side surface of the chimney, and the induced draft fan is connected to the other end of the flue device; through pressurizer, steam just can pass through the jet-propelled pipe blowout when making the inside atmospheric pressure of hollow inside lining reach the critical value, ensure that spun steam has enough high power, through the operation of high-pressure steam drive flue device, provide extra power for the inside mobile waste gas of flue device, finally convert the waste heat energy in the waste gas into the kinetic energy of drive waste gas motion, energy utilization has been improved, realize energy-conserving purpose, make the resistance that draught fan drive waste gas moved reduce simultaneously, and then the load capacity of draught fan has been reduced, the power consumption of draught fan has been reduced, energy-conserving effect is better, the draught fan is difficult to damage, the life of draught fan has been prolonged, and low in use cost.

Description

Energy-saving flue structure at outlet of induced draft fan

Technical Field

The utility model relates to a draught fan export energy-saving flue structure field, more specifically say, relate to a draught fan export energy-saving flue structure.

Background

The chimney is a structure for providing ventilation for waste gas such as hot smoke, smoke and the like of a boiler and a fireplace, is generally vertical in shape or is as close to vertical as possible so as to ensure stable flow of gas, is widely applied to industries such as smelting, power generation, chemical engineering and the like, and is additionally provided with an induced draft fan at the bottom of the chimney in order to increase the ventilation speed and gas transmission capacity of the chimney, so that the waste gas is rapidly discharged by providing power for the waste gas through the induced draft fan, and the combustion condition of the boiler and the fireplace is improved.

At present, draught fan on the chimney communicates with the chimney through one section arc flue, the inside spiral baffle that sets up of chimney is deuterogamied, make waste gas in the rotatory rise of inside of chimney, the centrifugal force that utilizes rotatory flue gas to produce and the central negative pressure inhale the aerodynamic characteristics such as roll effect and realize the chimney noncorrosive purpose, however, this kind of flue structure only relies on the power drive waste gas entering chimney of draught fan, it is too big to lead to the draught fan to load, not only can consume a large amount of electric energy, and the draught fan damages very easily, use cost is higher, consequently, need to design an energy-conserving flue structure of draught fan export urgently.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

Draught fan to the chimney that exists among the prior art communicates through one section arc flue and chimney, the inside spiral baffle that sets up of chimney is deuterogamied, make waste gas in the rotatory rise of inside of chimney, the centrifugal force that utilizes rotatory flue gas to produce and the central negative pressure inhale the aerodynamic characteristics such as book effect and realize the chimney and do not have the corruption purpose, however, this kind of flue structure only relies on the power drive waste gas entering chimney of draught fan, it is too big to lead to the draught fan to load, not only can consume a large amount of electric energy, and the draught fan damages very easily moreover, the higher problem of use cost, the utility model aims to provide an energy-conserving flue structure of draught fan export, the problem that provides in the solution background art that it can be fine.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides an energy-conserving flue structure of draught fan export, includes the chimney, the outside of chimney is equipped with fixed platform, and fixed platform's top surface is equipped with pressurizer, and the side of chimney is connected with the flue device, and the other end of flue device is connected with the draught fan, and the front of chimney is equipped with automatic water supply device.

Preferably, the chimney includes the barrel, and the fixed inside of alternating at fixed platform of barrel, the inner wall connection of barrel has the fixed block, and the other end of fixed block is connected with hollow inside lining, and the inner wall of hollow inside lining is equipped with hollow spiral baffle, hollow spiral baffle and hollow inside lining intercommunication, are formed with spiral flue gas runner between the inner wall of hollow inside lining and the outer wall of hollow spiral baffle, and the top of barrel inner wall is connected with the sealing washer, and the inner wall and the top of hollow inside lining outer wall of sealing washer are connected.

Preferably, the pressurizer includes the pressurize pipe, the bottom surface and the fixed platform's of pressurize pipe top surface are connected, the underrun of pressurize pipe inner chamber is connected with the lifting disk through pressurize spring drive, the inner wall sliding connection of lifting disk and pressurize pipe, the middle part of lifting disk top surface is connected with sealed post, the side intercommunication of pressurize pipe has the jet-propelled pipe that is located the lifting disk top, sealed hole has been seted up to the top surface of pressurize pipe, the top of sealed post can be pegged graft with sealed hole, the top surface of pressurize pipe is connected with the high-pressurepipe with sealed hole intercommunication, the other end of high-pressurepipe communicates with the inner chamber of hollow inside lining.

Preferably, the flue device includes the flue pipe, the one end of flue pipe alternates in the inside of barrel and hollow inside lining and with spiral flue gas runner intercommunication, the other end of flue pipe and the export intercommunication of draught fan, the top surface of flue pipe is connected with the power compensation section of thick bamboo, the left end intercommunication of power compensation section of thick bamboo has the breather pipe, the other end and the flue pipe intercommunication of breather pipe, the right-hand member intercommunication of power compensation section of thick bamboo has the gas-supply pipe, the other end and the flue pipe intercommunication of gas-supply pipe, the inner wall connection of power compensation section of thick bamboo has the dead lever, the other end of dead lever is connected with the bearing, the inside activity interlude of bearing has the rotation axis, driven bevel gear and power compensation leaf have been cup jointed to the external fixation of rotation axis, the top of.

Preferably, the boosting device comprises a boosting volute, the bottom surface of the boosting volute is communicated with the top surface of the power compensation cylinder, a boosting rod is movably inserted on the bottom surface of the boosting volute, the top end of the boosting rod is located inside the boosting volute, the bottom end of the boosting rod is located inside the power compensation cylinder, the top end of the boosting rod is in an open shape, the bottom end of the boosting rod is in a sealed shape, a turbine blade located inside the boosting volute is fixedly sleeved on the outer portion of the boosting rod, an air release hole located inside the power compensation cylinder is formed in the outer portion of the boosting rod, a driving bevel gear is fixedly sleeved on the bottom end of the boosting rod and meshed with a driven bevel gear, an air inlet pipe is arranged on the side surface of the boosting volute, and the other end of the air inlet pipe is communicated with.

Preferably, the automatic water supply device includes the protective box, the protective box is connected with the surface of barrel, high pressure water pump is installed to the right-hand member bolt of protective box inner chamber bottom surface, high pressure water pump's water inlet intercommunication has the water source pipe, high pressure water pump's delivery port intercommunication has the inlet tube, the other end of inlet tube and the inner chamber intercommunication of hollow inside lining, the left end of protective box inner chamber bottom surface is connected with the insulating cylinder, the inner wall connection of insulating cylinder has electrically conductive shell fragment, the top surface of insulating cylinder inner chamber is connected with the insulating disc through the stress spring transmission, the middle part of insulating disc bottom surface is connected with U type conducting strip, the middle part of insulating disc top surface is connected with the bellows, the top of bellows passes stress spring and extends to the outside of insulating cylinder and communicates there is the constant voltage pipe, the other end of constant voltage.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

the water quantity in the inner cavity of the hollow lining is monitored in real time through the automatic water replenishing device, when the water quantity in the inner cavity of the hollow lining is small, the automatic water replenishing device can automatically replenish the water quantity for the hollow lining, the inner cavity of the hollow lining is ensured to store enough water quantity, the hollow lining and the hollow spiral baffle plate absorb waste heat in waste gas and transfer the heat to the water in the inner cavity of the hollow lining, the water temperature is increased and steam is generated, the air pressure in the hollow lining is increased, through the pressure maintaining device, the steam can be sprayed out through the air spraying pipe when the air pressure in the hollow lining reaches a critical value, the sprayed steam is ensured to have enough high power, the flue device is driven to run through high-pressure steam, additional power is provided for the waste gas flowing in the flue device, finally, the waste heat energy in the waste gas is converted into kinetic energy for driving, meanwhile, the resistance of the draught fan for driving the waste gas to move is reduced, so that the load of the draught fan is reduced, the power consumption of the draught fan is reduced, the energy-saving effect is better, the draught fan is not easy to damage, the service life of the draught fan is prolonged, and the use cost is low.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the chimney shown in FIG. 1 according to the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic diagram of the internal structure of the pressure maintaining device of FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the internal structure of the flue apparatus of FIG. 1 according to the present invention;

FIG. 6 is a schematic top view of the boosting device shown in FIG. 5 according to the present invention;

FIG. 7 is a schematic view of the internal structure of the automatic water replenishing device of FIG. 1 according to the present invention;

fig. 8 is a schematic view of the internal structure of the insulating cylinder of fig. 7 according to the present invention.

The reference numbers in the figures illustrate:

1. a chimney; 11. a barrel; 12. a fixed block; 13. a hollow liner; 14. a hollow helical baffle; 15. a spiral flue gas channel; 16. a seal ring; 2. a fixed platform; 3. a pressure maintaining device; 31. a pressure maintaining pipe; 32. a pressure maintaining spring; 33. a lifting plate; 34. sealing the column; 35. a gas ejector tube; 36. sealing the hole; 37. a high-pressure air pipe; 4. a flue means; 40. a boosting device; 401. a boosting volute; 402. a push-aid rod; 403. a steam turbine blade; 404. air bleeding holes; 405. a drive bevel gear; 406. an air inlet pipe; 41. a flue pipe; 42. a power compensation cylinder; 43. a breather pipe; 44. a gas delivery pipe; 45. fixing the rod; 46. a bearing; 47. a rotating shaft; 48. a driven bevel gear; 49. a power compensation vane; 5. an induced draft fan; 6. an automatic water replenishing device; 601. a protective box; 602. a high pressure water pump; 603. a water source pipe; 604. a water inlet pipe; 605. an insulating cylinder; 606. a conductive spring plate; 607. a stress spring; 608. an insulating disk; 609. a U-shaped conductive sheet; 610. a bellows; 611. a constant pressure tube.

Detailed Description

The drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the utility model is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the present invention; rather than all embodiments. Based on the embodiment of the utility model; all other embodiments obtained by a person skilled in the art without making any inventive step; all belong to the protection scope of the utility model.

Referring to fig. 1-8, an energy-saving flue structure for an outlet of an induced draft fan comprises a chimney 1, a fixed platform 2 is arranged outside the chimney 1, a pressure maintaining device 3 is arranged on the top surface of the fixed platform 2, a flue device 4 is connected to the side surface of the chimney 1, an induced draft fan 5 is connected to the other end of the flue device 4, the induced draft fan 5 is Y6-51, and an automatic water replenishing device 6 is arranged on the front surface of the chimney 1.

Chimney 1 includes barrel 11, the fixed inside of interlude at fixed platform 2 of barrel 11, the inner wall connection of barrel 11 has fixed block 12, the other end of fixed block 12 is connected with hollow inside lining 13, the inner wall of hollow inside lining 13 is equipped with hollow spiral baffle 14, hollow spiral baffle 14 and hollow inside lining 13 intercommunication, be formed with spiral flue gas runner 15 between the inner wall of hollow inside lining 13 and the outer wall of hollow spiral baffle 14, the top of barrel 11 inner wall is connected with sealing washer 16, the inner wall of sealing washer 16 is connected with the top of hollow inside lining 13 outer wall.

Pressurizer 3 includes pressurize pipe 31, the bottom surface of pressurize pipe 31 is connected with fixed platform 2's top surface, the underrun of pressurize pipe 31 inner chamber is connected with lifting disk 33 through pressurize spring 32 transmission, lifting disk 33 and pressurize pipe 31's inner wall sliding connection, the middle part of lifting disk 33 top surface is connected with sealed post 34, the side intercommunication of pressurize pipe 31 has the jet-propelled pipe 35 that is located the lifting disk 33 top, sealed hole 36 has been seted up to pressurize pipe 31's top surface, sealed post 34's top can be pegged graft with sealed hole 36, the top surface of pressurize pipe 31 is connected with the high-pressurepipe 37 with sealed hole 36 intercommunication, the other end of high-pressurepipe 37 communicates with the inner chamber of hollow inside lining 13.

The flue device 4 comprises a flue pipe 41, one end of the flue pipe 41 is inserted into the barrel 11 and the hollow lining 13 and is communicated with the spiral flue gas channel 15, the other end of the flue pipe 41 is communicated with an outlet of the induced draft fan 5, the top surface of the flue pipe 41 is connected with a power compensation cylinder 42, the left end of the power compensation cylinder 42 is communicated with a vent pipe 43, the other end of the vent pipe 43 is communicated with the flue pipe 41, the right end of the power compensation cylinder 42 is communicated with a gas pipe 44, the other end of the gas pipe 44 is communicated with the flue pipe 41, the inner wall of the power compensation cylinder 42 is connected with a fixed rod 45, the other end of the fixed rod 45 is connected with a bearing 46, a rotating shaft 47 is movably inserted into the inside of the bearing 46, a driven bevel gear 48 and a power compensation blade 49 are fixedly sleeved on the outside of the rotating shaft 47.

The boosting device 40 comprises a boosting volute 401, the bottom surface of the boosting volute 401 is communicated with the top surface of a power compensation cylinder 42, a boosting rod 402 is movably inserted on the bottom surface of the boosting volute 401, the top end of the boosting rod 402 is located inside the boosting volute 401, the bottom end of the boosting rod 402 is located inside the power compensation cylinder 42, the top end of the boosting rod 402 is open, the bottom end of the boosting rod 402 is sealed, a turbine blade 403 located inside the boosting volute 401 is fixedly sleeved outside the boosting rod 402, an air release hole 404 located inside the power compensation cylinder 42 is formed in the outside of the boosting rod 402, a driving bevel gear 405 is fixedly sleeved at the bottom end of the boosting rod 402, the driving bevel gear 405 is meshed with a driven bevel gear 48, an air inlet pipe 406 is arranged on the side surface of the boosting volute 401, and the other end of the air inlet pipe 406 is communicated with the end of an air injection pipe 35.

The automatic water replenishing device 6 comprises a protective box 601, the protective box 601 is connected with the outer surface of the cylinder 11, a high-pressure water pump 602 is installed at the right end of the bottom surface of the inner cavity of the protective box 601 through a bolt, the model of the high-pressure water pump 602 is LT-8, a water inlet of the high-pressure water pump 602 is communicated with a water source pipe 603, a water outlet of the high-pressure water pump 602 is communicated with a water inlet pipe 604, a one-way valve is arranged on a pipeline of the water inlet pipe 604, the other end of the water inlet pipe 604 is communicated with the inner cavity of the hollow lining 13, the left end of the bottom surface of the inner cavity of the protective box 601 is connected with an insulating cylinder 605, the inner wall of the insulating cylinder 605 is connected with a conductive elastic sheet 606, the conductive elastic sheet 606 is electrically connected with the high-pressure water pump 602, the top surface of the inner cavity of the insulating cylinder 605, the middle part of the top surface of the insulating disc 608 is connected with a corrugated pipe 610, the top end of the corrugated pipe 610 penetrates through the stress spring 607 and extends to the outside of the insulating cylinder 605 and is communicated with a constant pressure pipe 611, and the other end of the constant pressure pipe 611 extends to the outside of the protective box 601 and is communicated with the inner cavity of the hollow lining 13, so that the length of the corrugated pipe 610 changes along with the change of the water pressure inside the hollow lining 13.

The working principle is as follows:

firstly, the induced draft fan 5 drives the waste gas to enter the spiral flue gas channel 15 through the flue pipe 41, then the waste gas flows upwards in a rotating mode in the spiral flue gas channel 15, in the process, the waste heat in the waste gas is transferred to the water in the hollow lining 13 and the hollow spiral baffle 14 through the hollow lining 13 and the hollow spiral baffle 14 to heat the water, so that the water temperature is increased and steam is generated, the water is changed into a gas state from a liquid state, the volume is increased, the air pressure in the hollow lining 13 is gradually increased, then the air pressure in the high-pressure air pipe 37 is synchronously increased, then the sealing column 34 is subjected to downward thrust under the action of the air pressure, the thrust is gradually increased along with the increase of the air pressure in the high-pressure air pipe 37, until the sealing column 34 overcomes the elastic force of the pressure maintaining spring 32 and moves downwards under the action of the thrust, the sealing hole 36 is opened, and then the high-pressure steam in the, The pressure maintaining pipe 31 and the air injection pipe 35 are sprayed to the turbine blades 403 to rotate the turbine blades 403, the turbine blades 403 are sucked into the power compensation cylinder 42 through the air pipe 43 and are discharged into the flue pipe 41 again from the air pipe 44 by the aid of the engaging action of the push-rod 402 and the driving bevel gear 405 with the driven bevel gear 48 and the rotation shaft 47 driving the power compensation blades 49 to provide extra power for the waste gas flowing in the flue pipe 41, and finally the residual heat energy in the waste gas is converted into the kinetic energy for driving the waste gas to move, so that the energy utilization rate is improved, the energy saving purpose is realized, the resistance for driving the waste gas to move by the induced draft fan 5 is reduced, the load capacity of the induced draft fan 5 is reduced, the power consumption of the induced draft fan 5 is reduced, the energy saving effect is better, the induced draft fan 5 is not easy to damage, the service life of the induced draft fan 5 is prolonged, the water vapor entering the boosting volute 401 enters the power compensation cylinder 42 through the air release hole 404 and moves along with the waste gas, which is helpful for increasing the kinetic energy of the waste gas and increasing the circulation speed of the waste gas, meanwhile, the water vapor is mixed with the waste gas to dilute the corrosive gas in the waste gas and reduce the corrosivity of the waste gas, as the water quantity inside the hollow lining 13 is consumed, the pressure inside the corrugated pipe 610 is gradually reduced, so that the thrust of the corrugated pipe 610 to the insulating disc 608 is reduced, the insulating disc 608 moves upwards under the action of the elastic tension of the stress spring 607, the U-shaped conducting strip 609 moves upwards along with the above until the U-shaped conducting strip 609 is in contact with the conducting elastic piece 606, the power supply of the high-pressure water pump 602 is switched on, the high-pressure water pump 602 sucks water from the water source through the water source pipe 603 and pumps the water into the inner cavity of the hollow lining 13 through the water inlet pipe 604, the purpose, it is ensured that the flue gas duct means 4 is always in an operating state.

The above; is only a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; according to the technical scheme of the utility model and the improvement conception, equivalent substitution or change is carried out; are all covered by the protection scope of the utility model.

Claims (6)

1. The utility model provides an energy-conserving flue structure of draught fan export, includes chimney (1), its characterized in that: the automatic water supply device is characterized in that a fixing platform (2) is arranged outside the chimney (1), a pressure maintaining device (3) is arranged on the top surface of the fixing platform (2), a flue device (4) is connected to the side face of the chimney (1), an induced draft fan (5) is connected to the other end of the flue device (4), and an automatic water supply device (6) is arranged on the front face of the chimney (1).

2. The energy-saving flue structure for the outlet of the induced draft fan according to claim 1, wherein: chimney (1) includes barrel (11), the fixed inside of interlude in fixed platform (2) in barrel (11), the inner wall connection of barrel (11) has fixed block (12), the other end of fixed block (12) is connected with hollow inside lining (13), the inner wall of hollow inside lining (13) is equipped with hollow spiral baffle (14), hollow spiral baffle (14) and hollow inside lining (13) intercommunication, be formed with spiral flue gas runner (15) between the inner wall of hollow inside lining (13) and the outer wall of hollow spiral baffle (14), the top of barrel (11) inner wall is connected with sealing washer (16), the inner wall of sealing washer (16) is connected with the top of hollow inside lining (13) outer wall.

3. The energy-saving flue structure for the outlet of the induced draft fan according to claim 1, wherein: the pressure maintaining device (3) is including pressurize pipe (31), the bottom surface of pressurize pipe (31) is connected with the top surface of fixed platform (2), the bottom surface of pressurize pipe (31) inner chamber is connected with lifter plate (33) through pressurize spring (32) transmission, inner wall sliding connection of lifter plate (33) and pressurize pipe (31), the middle part of lifter plate (33) top surface is connected with sealing post (34), the side intercommunication of pressurize pipe (31) has jet-propelled pipe (35) that are located lifter plate (33) top, sealed hole (36) have been seted up to the top surface of pressurize pipe (31), the top of sealing post (34) can be pegged graft with sealed hole (36), the top surface of pressurize pipe (31) is connected with high-pressure trachea (37) with sealed hole (36) intercommunication, the other end and the inner chamber intercommunication of hollow inside lining (13) of high-pressure trachea (37).

4. The energy-saving flue structure for the outlet of the induced draft fan according to claim 1, wherein: the flue device (4) comprises a flue pipe (41), one end of the flue pipe (41) is inserted into the barrel body (11) and the hollow lining (13) and communicated with the spiral flue gas flow channel (15), the other end of the flue pipe (41) is communicated with the outlet of the induced draft fan (5), the top surface of the flue pipe (41) is connected with a power compensation cylinder (42), the left end of the power compensation cylinder (42) is communicated with a vent pipe (43), the other end of the vent pipe (43) is communicated with the flue pipe (41), the right end of the power compensation cylinder (42) is communicated with a gas pipe (44), the other end of the gas pipe (44) is communicated with the flue pipe (41), the inner wall of the power compensation cylinder (42) is connected with a fixed rod (45), the other end of the fixed rod (45) is connected with a bearing (46), a rotating shaft (47) is movably inserted into the bearing (46), a driven bevel gear (48) and a power compensation blade (49) are fixedly sleeved on the outside of the rotating shaft, the top of the power compensation cylinder (42) is provided with a boosting device (40).

5. The energy-saving flue structure for the outlet of the induced draft fan of claim 4, wherein: the boosting device (40) comprises a boosting volute (401), the bottom surface of the boosting volute (401) is communicated with the top surface of a power compensation cylinder (42), a boosting rod (402) is movably inserted on the bottom surface of the boosting volute (401), the top end of the boosting rod (402) is positioned inside the boosting volute (401), the bottom end of the boosting rod (402) is positioned inside the power compensation cylinder (42), the top end of the boosting rod (402) is in an open shape, the bottom end of the boosting rod (402) is in a sealed shape, a steam vane (403) positioned inside the boosting volute (401) is fixedly sleeved outside the boosting rod (402), an air release hole (404) positioned inside the power compensation cylinder (42) is formed outside the boosting rod (402), a driving bevel gear (405) is fixedly sleeved at the bottom end of the boosting rod (402), the driving bevel gear (405) is meshed with a driven bevel gear (48), and an air inlet pipe (406) is arranged on the side surface of the boosting volute (401), the other end of the air inlet pipe (406) is communicated with the end part of the air injection pipe (35).

6. The energy-saving flue structure for the outlet of the induced draft fan according to claim 1, wherein: the automatic water replenishing device (6) comprises a protective box (601), the protective box (601) is connected with the outer surface of a cylinder body (11), a high-pressure water pump (602) is installed on a right end bolt on the bottom surface of an inner cavity of the protective box (601), a water inlet of the high-pressure water pump (602) is communicated with a water source pipe (603), a water outlet of the high-pressure water pump (602) is communicated with a water inlet pipe (604), the other end of the water inlet pipe (604) is communicated with an inner cavity of a hollow lining (13), the left end of the bottom surface of the inner cavity of the protective box (601) is connected with an insulating cylinder (605), the inner wall of the insulating cylinder (605) is connected with a conductive elastic sheet (606), the top surface of the inner cavity of the insulating cylinder (605) is connected with an insulating disc (608) through a stress spring (607) in a transmission manner, the middle part of the bottom surface of the insulating disc (608) is connected with a U-shaped conductive sheet (609), the middle part 611) The other end of the constant-pressure pipe (611) extends to the outside of the protective box (601) and is communicated with the inner cavity of the hollow lining (13).

Images