CN116221692A

CN116221692A - Energy-saving carbon-reducing coal-fired boiler for waste heat recovery

Info

Publication number: CN116221692A
Application number: CN202310490869.8A
Authority: CN
Inventors: 刘海洪; 刘景成; 张建军; 杨雪; 刘猛
Original assignee: Hebei Hongguang Fuel Co ltd
Current assignee: Hebei Hongguang Fuel Co ltd
Priority date: 2023-05-05
Filing date: 2023-05-05
Publication date: 2023-06-06
Anticipated expiration: 2043-05-05
Also published as: CN116221692B

Abstract

The invention relates to the technical field of waste heat recovery, in particular to an energy-saving carbon reduction coal-fired boiler for waste heat recovery, which comprises an industrial boiler, wherein a smoke exhaust pipe is fixedly arranged on the industrial boiler; the carbon reduction coal-fired boiler also comprises a steam generating device, an auxiliary heating device and a flow control device; the steam generating device comprises a first mounting frame, a steam generating chamber and a heat conducting plate; the first mounting frame is fixedly connected with the industrial boiler; the steam generation chamber is fixedly arranged on the first mounting frame, a temperature sensor is fixedly arranged on the steam generation chamber, and the temperature sensor is communicated with the inside of the steam generation chamber; the auxiliary heating device and the flow control device are fixedly arranged on the first mounting frame; the auxiliary heating device is communicated with the steam generation chamber. The invention realizes the function of continuously and stably generating steam, achieves the effect of auxiliary heating when the flue gas amount of the boiler is insufficient, and solves the problem that the traditional coal-fired boiler cannot effectively utilize the waste heat in the flue gas when the heat provided by the flue gas is insufficient.

Description

Energy-saving carbon-reducing coal-fired boiler for waste heat recovery

Technical Field

The invention relates to the technical field of waste heat recovery, in particular to an energy-saving carbon reduction coal-fired boiler for waste heat recovery.

Background

The energy-saving and environment-friendly coal-fired boiler is characterized in that a coal gas generator and the boiler are combined into a whole, fuel is thrown on a fire grate from a coal feeding port to burn, a coal layer is combined with steam by utilizing high temperature to fully generate a chemical reaction to generate combustible gas, flue gas enters the upper part of the boiler after being converted in a combustion chamber, high-temperature flame is generated by an automatic ignition system, the gas is fully burnt under the action of the high temperature, the flue gas generated by burning the coal-fired boiler contains a large amount of dust and harmful substances, the flue gas is required to be discharged after being filtered, and a large amount of heat energy is contained in the flue gas, so that energy loss is increased due to direct discharge, and the flue gas is required to be filtered and waste heat is recovered, but the abrasion of a filtering device is aggravated by the high temperature of the flue gas when the existing flue gas is filtered, and the maintenance cost of equipment is increased.

For this reason, chinese patent application CN115095846a discloses a comprehensive energy-saving device for deep steam waste heat recovery of industrial coal-fired boiler, which is characterized in that by arranging a boiler body and a cooling mechanism, when the water body in the water tank is led into a cooling pipe by a water pump, the temperature of the flue gas led out of the boiler body is reduced, the temperature of the gas led into a dust remover subsequently is lower, and the service life of the dust remover is prolonged; through setting up structures such as preheating mechanism and steam turbine, the steam turbine can be with the steam conversion of cooling tube absorption heat production into the electric energy, has improved the utilization ratio of heat energy, and steam and filterable oxygen can preheat the intake pipe simultaneously, have reduced the consumption of boiler energy, have further improved the utilization ratio of boiler waste heat.

However, when the amount of flue gas is small or the amount of heat in the flue gas is insufficient, water cannot be heated to boiling, steam is generated to generate electricity, and the non-boiled hot water is mostly used for heating, and the effect is limited.

Disclosure of Invention

Aiming at the problems, the energy-saving carbon reduction coal-fired boiler for recovering the waste heat solves the problem that the traditional coal-fired boiler cannot effectively utilize the waste heat in the flue gas when the heat provided by the flue gas is insufficient through an industrial boiler, a steam generating device, an auxiliary heating device and a flow control device.

In order to solve the problems in the prior art, the invention adopts the following technical scheme:

an energy-saving carbon-reducing coal-fired boiler for waste heat recovery comprises an industrial boiler, wherein a smoke exhaust pipe is fixedly arranged on the industrial boiler; the carbon reduction coal-fired boiler also comprises a steam generating device, an auxiliary heating device and a flow control device; the steam generating device comprises a first mounting frame, a steam generating chamber and a heat conducting plate; the first mounting frame is fixedly connected with the industrial boiler; the steam generation chamber is fixedly arranged on the first mounting frame, a temperature sensor is fixedly arranged on the steam generation chamber, and the temperature sensor is communicated with the inside of the steam generation chamber; the heat conducting plate is fixedly arranged in the smoke exhaust pipe and is communicated with the inside of the steam generation chamber; the auxiliary heating device and the flow control device are fixedly arranged on the first mounting frame; the auxiliary heating device is communicated with the steam generation chamber; the flow control device is located between the steam generating chamber and the auxiliary heating device.

Preferably, the flow control device comprises a connection chamber, a valve plate and a first drive assembly; the connecting chamber is fixedly connected with the steam generating chamber, and the internal cavity of the connecting chamber is communicated with the inside of the steam generating chamber; the second mounting frame is fixedly arranged on the connecting chamber and fixedly connected with the auxiliary heating device; the valve plate is slidably mounted on the second mounting frame; the first linear driving assembly is fixedly arranged on the second mounting frame, and the driving end of the first linear driving assembly is fixedly connected with the valve plate.

Preferably, the carbon reduction coal-fired boiler further comprises an auxiliary control device, wherein the auxiliary control device comprises a second linear driving assembly and a locking assembly; the second linear driving assembly comprises a first mounting seat, a telescopic rod, a push plate, a floating block, a first rack, a driving roller and a second rack; the first mounting seat is fixedly arranged in the connecting chamber; the telescopic rod is slidably arranged on the first mounting seat; the floating block is slidably arranged on the first mounting seat; the first rack is fixedly arranged on the floating block; the driving roller is rotatably arranged on the first mounting seat, and the first rack is in driving connection with the driving roller; the second rack is slidably arranged on the first mounting seat, is fixedly connected with the telescopic rod and is in transmission connection with the driving roller; the locking component is fixedly arranged on the valve plate.

Preferably, the locking assembly comprises a second mounting seat, an arc-shaped clamping block, a first elastic piece and a ratchet bar; the second mounting seat is fixedly arranged on the valve plate; the arc-shaped clamping block is slidably arranged on the second mounting seat; two ends of the first elastic piece are fixedly connected with the second mounting seat and the arc-shaped clamping block respectively; the ratchet bar is fixedly arranged on the push plate.

Preferably, the auxiliary control device further comprises a buffer assembly and a booster assembly; the buffer component comprises a support bar and a third mounting seat; the support bar is fixedly arranged in the connecting chamber; the third mounting seat is slidably mounted on the supporting bar and is in sliding fit with the push plate; the power assisting component comprises a hinging seat and a second elastic piece; the two hinge seats are respectively rotatably arranged on the connecting seat and the third mounting seat; two ends of the second elastic piece are fixedly connected with the two hinging seats respectively.

Preferably, the first linear drive assembly comprises a rotary drive, a bevel gear, a screw, a connecting frame and a first pressure sensor; the rotary driver is fixedly arranged on the second mounting frame; the two bevel gears are arranged, one bevel gear is fixedly sleeved on the driving end of the rotary driver, the other bevel gear is fixedly sleeved on the screw rod, and the two bevel gears are in gear engagement connection; the screw is rotatably arranged on the second mounting frame; the connecting frame is in threaded connection with the screw rod; the both ends of first pressure sensor respectively with second mounting bracket and link fixed connection.

Preferably, the auxiliary heating device comprises a heating chamber, an induction assembly and a heating plate; the heating chamber is communicated with the connecting chamber; the sensing assembly comprises a bottom plate, a sensing plate, a third elastic piece and a second pressure sensor; the bottom plate is fixedly arranged at the bottom of the heating chamber; the bottom plate is provided with a mounting groove; the induction plate is slidably arranged in the mounting groove; two ends of the third elastic piece are fixedly connected with the bottom plate and the induction plate respectively; the second pressure sensor is fixedly arranged on the bottom plate.

Preferably, the auxiliary heating device further comprises a connecting assembly, and the connecting assembly comprises a connecting pipe and a flowmeter; two ends of the connecting pipe are fixedly connected with the connecting chamber and the heating chamber respectively; the flowmeter is fixedly arranged on the connecting pipe.

Preferably, the industrial boiler is also provided with a filter assembly, and the filter assembly comprises a transmission pipeline, a filter plate and a fan; two ends of the transmission pipeline are fixedly connected with the smoke exhaust pipe and the fan respectively; the filter is fixed mounting in transmission pipeline's inside.

Preferably, the smoke exhaust pipe is also provided with a cooling pipeline; two ends of the cooling pipeline are fixedly connected with the smoke exhaust pipe and the transmission pipeline respectively; the spiral pipeline is sleeved on the cooling pipeline.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention realizes the function of continuously and stably generating steam through the industrial boiler, the steam generating device, the auxiliary heating device and the flow control device, achieves the effect of automatically carrying out auxiliary heating when the flue gas amount of the boiler is insufficient, and solves the problem that the traditional coal-fired boiler cannot effectively utilize the waste heat of the flue gas when the heat provided by the flue gas is insufficient.

2. According to the invention, the function of automatically fixing the valve plate position according to the liquid level height in the connecting chamber is realized through the first mounting seat, the telescopic rod, the push plate, the floating block, the first rack, the driving roller, the second rack and the butt joint assembly, so that the effect of preventing the first steam pipe from being blocked due to excessive accumulated water in the steam generating chamber is achieved.

3. According to the invention, the function of limiting the moving direction of the valve plate when the liquid level of the connecting chamber is too high is realized through the second mounting seat, the arc-shaped clamping block, the first elastic piece and the ratchet bar, and the effect that the valve plate can only be opened but not closed when the liquid level of the steam generating chamber is too high is achieved.

Drawings

FIG. 1 is a schematic perspective view of an energy-saving carbon reduction coal-fired boiler for waste heat recovery;

FIG. 2 is a schematic perspective view of a steam generating device and an auxiliary heating device in an energy-saving type carbon reduction coal-fired boiler with waste heat recovery;

FIG. 3 is a schematic perspective view of a steam generating device and a flow control device in an energy-saving type carbon reduction coal-fired boiler for waste heat recovery;

FIG. 4 is a schematic perspective view of a flow control device and an auxiliary control device in an energy-saving carbon reduction coal-fired boiler for waste heat recovery;

FIG. 5 is a front view of a junction housing in an energy-efficient carbon reduction coal-fired boiler for waste heat recovery;

FIG. 6 is a schematic perspective view of an auxiliary control device in an energy-saving type carbon reduction coal-fired boiler for waste heat recovery;

FIG. 7 is a schematic perspective view of an auxiliary control device in an energy-saving type carbon reduction coal-fired boiler for waste heat recovery;

FIG. 8 is an enlarged partial schematic view at A in FIG. 6;

FIG. 9 is an exploded perspective view of a second mounting bracket, a first linear drive assembly and a locking assembly in an energy efficient carbon reduction coal fired boiler with waste heat recovery;

FIG. 10 is a schematic perspective view of the cooperation of a heating chamber and a connecting chamber in an energy-saving carbon reduction coal-fired boiler for waste heat recovery;

FIG. 11 is a schematic perspective view of a heating chamber in an energy-efficient carbon reduction coal-fired boiler for waste heat recovery;

FIG. 12 is a schematic perspective exploded view of an induction module in an energy efficient carbon reduction coal fired boiler for waste heat recovery;

fig. 13 is an exploded perspective view of a filter assembly and a cooling assembly in an energy-efficient carbon reduction coal-fired boiler for waste heat recovery.

The reference numerals in the figures are:

1-an industrial boiler;

11-smoke exhaust pipe;

12-a filter assembly; 121-a transmission pipeline; 122-filtering plates; 123-fans;

13-a cooling assembly; 131-cooling pipes; 132-helical tubing;

2-a steam generating device;

21-a first mounting frame;

22-a steam generation chamber; 221-a temperature sensor; 222-a first steam pipe; 223-safety valve;

23-a heat-conducting plate;

3-an auxiliary heating device;

31-heating the chamber; 311-a second steam pipe;

a 32-sensing assembly; 321-a bottom plate; 322-mounting groove; 323-induction plate; 324-a third elastic member; 325-a second pressure sensor;

33-heating plate;

34-a connection assembly; 341-connecting pipes; 342-a flow meter;

4-a flow control device;

41-a junction chamber; 411-a second mount;

42-a valve plate;

43-a first linear drive assembly; 431-a rotary drive; 432-bevel gear; 433-screw; 434-a connecting frame; 435-a first pressure sensor;

5-auxiliary control means;

51-a second linear drive assembly; 511-a first mount; 512-telescoping rod; 513-push plate; 514-floating blocks; 515-first rack; 516-driving roller; 517-a second rack;

52-a locking assembly; 521-a second mount; 522-arc-shaped clamping blocks; 523-a first elastic member; 524-a ratchet bar;

53-a cushioning assembly; 531-support bar; 532—a third mount;

54-a booster component; 541-hinging seat; 542-second elastic member.

Detailed Description

The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.

Referring to fig. 1-13: an energy-saving carbon-reducing coal-fired boiler for waste heat recovery comprises an industrial boiler 1, wherein a smoke exhaust pipe 11 is fixedly arranged on the industrial boiler 1; the carbon reduction coal-fired boiler also comprises a steam generating device 2, an auxiliary heating device 3 and a flow control device 4; the steam generating device 2 comprises a first mounting frame 21, a steam generating chamber 22 and a heat conducting plate 23; the first mounting rack 21 is fixedly connected with the industrial boiler 1; the steam generation chamber 22 is fixedly installed on the first installation frame 21, a temperature sensor 221 is fixedly installed on the steam generation chamber 22, and the temperature sensor 221 is communicated with the inside of the steam generation chamber 22; the heat-conducting plate 23 is fixedly arranged in the smoke exhaust pipe 11, and the heat-conducting plate 23 is communicated with the inside of the steam generation chamber 22; the auxiliary heating device 3 and the flow control device 4 are fixedly arranged on the first mounting frame 21; the auxiliary heating device 3 is communicated with the steam generation chamber 22; the flow control device 4 is located between the steam generating chamber 22 and the auxiliary heating 3.

The invention realizes the continuous and stable steam generating function through the industrial boiler 1, the steam generating device 2, the auxiliary heating device 3 and the flow control device 4, achieves the effect of automatically carrying out auxiliary heating when the flue gas amount of the boiler is insufficient, and solves the problem that the traditional coal-fired boiler cannot effectively utilize the waste heat of the flue gas when the heat provided by the flue gas is insufficient; the temperature sensor 221, the auxiliary heating device 3 and the flow control device 4 are electrically connected with the controller, and a first steam pipe 222 for discharging steam and a safety valve 223 for controlling the internal air pressure are installed on the steam generation chamber 22; after an operator starts the industrial boiler 1, the boiler generates smoke, the smoke is discharged along with the smoke exhaust pipe 11, meanwhile, the operator continuously and slowly injects water into the steam generation chamber 22, when the high-temperature smoke contacts with the heat conducting plate 23, heat is transferred to the steam generation chamber 22 through the heat conducting plate 23 to heat water in the steam generation chamber 22, if the smoke quantity is enough, the temperature sensor 221 senses that the temperature of the water in the steam generation chamber 22 is higher than 100 ℃, the controller sends a signal to the flow control device 4, the flow control device 4 closes a channel between the steam generation chamber 22 and the auxiliary heating device 3 after receiving the signal, water in the steam generation chamber 22 is boiled after being heated by the heat conducting plate 23, steam is continuously generated, and the steam is conveyed to the steam turbine through the first steam pipe 222 to generate electricity; if the smoke amount is insufficient, the temperature sensor 221 senses that the temperature of the water body in the steam generation chamber 22 is lower than 100 ℃, the water body in the steam generation chamber 22 cannot be boiled in time, the controller sends a signal to the flow control device 4 and the auxiliary heating device 3, the flow control device 4 opens a channel between the steam generation chamber 22 and the auxiliary heating device 3 after receiving the signal, the heated water flows to the auxiliary heating device 3, the auxiliary heating device 3 heats the water flow to boiling to generate steam, and the steam is transmitted to the steam turbine for heating; the invention avoids the problem of the equipment stopping due to insufficient steam supply by the flow control device 4.

Referring to fig. 1, 3, 4 and 9: the flow control device 4 includes a connection chamber 41, a valve plate 42, and a first drive assembly; the connecting chamber 41 is fixedly connected with the steam generating chamber 22 and the internal cavity thereof is communicated with the inside of the steam generating chamber 22; a second mounting rack 411 is fixedly arranged on the connecting chamber 41, and the second mounting rack 411 is fixedly connected with the auxiliary heating device 3; valve plate 42 is slidably mounted on second mounting bracket 411; the first linear driving assembly 43 is fixedly mounted on the second mounting frame 411, and the driving end of the first linear driving assembly 43 is fixedly connected with the valve plate 42.

The invention realizes the function of controlling the opening and closing of the channel between the steam generating chamber 22 and the auxiliary heating device 3 through the connecting chamber 41, the valve plate 42 and the first driving component; the first linear drive assembly 43 is electrically connected to the controller; the heat of the flue gas of the general industrial boiler 1 can reach 200-500 ℃, after an operator starts the industrial boiler 1, the flue gas is continuously discharged through the smoke exhaust pipe 11, heat in the flue gas is transmitted to the steam generation chamber 22 through the heat conducting plate 23, the water injection speed in the steam generation chamber 22 is relatively fixed, when the flue gas quantity is insufficient or the flue gas temperature is reduced, the water temperature in the steam generation chamber 22 is lower to below 100 ℃, steam cannot be generated, the temperature sensor 221 feeds back a signal to the controller, the controller sends a signal to the first linear driving component 43 after receiving the signal, the first linear driving component 43 drives the valve plate 42 to slide after receiving the signal, the channel of the connecting chamber 41 is opened, the second mounting frame 411 is communicated with the auxiliary heating device 3, the water in the steam generation chamber 22 flows to the auxiliary heating device 3 through the connecting chamber 41 and the second mounting frame 411, the hot water heated by the heat conducting plate 23 is heated again through the auxiliary heating device 3, the steam is generated and is transmitted to the steam turbine, and the waste heat in the flue gas is stably recycled, and the continuous and stable power generation effect is achieved.

Referring to fig. 4-7: the carbon reduction coal-fired boiler further comprises an auxiliary control device 5, wherein the auxiliary control device 5 comprises a second linear driving assembly 51 and a locking assembly 52; the second linear driving assembly 51 includes a first mounting base 511, a telescopic rod 512, a push plate 513, a float 514, a first rack 515, a driving roller 516 and a second rack 517; the first mounting seat 511 is fixedly installed in the connection chamber 41; the telescopic rod 512 is slidably mounted on the first mounting seat 511; the floating block 514 is slidably mounted on the first mounting base 511; the first rack 515 is fixedly mounted on the float 514; the driving roller 516 is rotatably arranged on the first mounting seat 511, and the first rack 515 is in driving connection with the driving roller 516; the second rack 517 is slidably installed on the first installation seat 511, the second rack 517 is fixedly connected with the telescopic rod 512, and the second rack 517 is in transmission connection with the transmission roller 516; the locking assembly 52 is fixedly mounted to the valve plate 42.

The invention realizes the function of automatically fixing the position of the valve plate 42 according to the liquid level height in the connecting chamber 41 through the first mounting seat 511, the telescopic rod 512, the push plate 513, the floating block 514, the first rack 515, the driving roller 516, the second rack 517 and the butt joint component, and achieves the effect of avoiding the blockage of the first steam pipe 222 caused by excessive water accumulation in the steam generating chamber 22; when an operator just turns on the industrial boiler 1, smoke is just generated, when the steam generation chamber 22 is not preheated, the temperature of the water body in the steam generation chamber is lower, at the moment, after receiving a signal fed back by the temperature sensor 221, the controller sends a signal to the first linear driving assembly 43, the first linear driving assembly 43 drives the valve plate 42 to be opened, at the moment, water flows into the auxiliary heating device 3 through the connecting chamber 41, and along with the reduction of the water flow in the steam generation chamber 22 and the continuous heating of the smoke, the water temperature in the steam generation chamber 22 rises, at the moment, through the real-time detection of the temperature sensor 221, the controller sends a signal to the first linear driving assembly 43 again to drive the valve plate 42 to be closed, however, when the smoke amount is less, the water body temperature reaches more than 100 ℃, however, the water evaporation rate is affected by temperature, the higher the temperature is, the faster the water evaporation rate is, so that the liquid level can be reduced, if the valve is closed at this time, water body accumulation can be caused, the liquid level in the steam generation chamber 22 is increased, the first steam pipe 222 is blocked, for this purpose, the auxiliary control device 5 is designed, when the liquid level is too high, the floating block 514 slides upwards under the action of buoyancy, the floating block 514 drives the first rack 515 to synchronously move, the first rack 515 drives the driving roller 516 to rotate, the driving roller 516 drives the second rack 517 in driving connection with the driving roller to move, and the second rack 517 drives the telescopic rod 512 and the push plate 513 to move until the push plate 513 abuts against the locking component 52, so that the movement of the valve plate 42 is limited, and the valve plate 42 is prevented from being closed under the condition that the liquid level in the steam generation chamber 22 is too high.

Referring to fig. 4-9: the locking assembly 52 includes a second mounting seat 521, an arc-shaped latch 522, a first elastic member 523, and a ratchet bar 524; the second mounting seat 521 is fixedly mounted on the valve plate 42; the arc-shaped clamping block 522 is slidably mounted on the second mounting seat 521; two ends of the first elastic piece 523 are fixedly connected with the second mounting seat 521 and the arc-shaped clamping block 522 respectively; ratchet bar 524 is fixedly mounted to push plate 513.

The invention realizes the function of limiting the moving direction of the valve plate 42 when the liquid level of the connecting chamber 41 is too high through the second mounting seat 521, the arc-shaped clamping block 522, the first elastic piece 523 and the ratchet bar 524, and achieves the effect that the valve plate 42 can only be opened but not closed when the liquid level of the steam generating chamber 22 is too high; when the water level in the steam generating chamber 22 rises, the connecting chamber 41 is communicated with the steam generating chamber, the water level in the connecting chamber 41 is also increased, at the moment, the floating block 514 rises synchronously along with the rising of the water level, the telescopic rod 512 stretches out through the transmission of the transmission roller 516, the telescopic rod 512 drives the push plate 513 and the ratchet bar 524 to move, the ratchet bar 524 is matched with the arc-shaped clamping block 522, the valve plate 42 is limited to be closed through the one-way locking capability of the ratchet bar 524, and the valve plate 42 can still be normally opened under the driving of the first linear driving assembly 43 through the arc surface of the arc-shaped clamping block 522 and the deformation capability of the first elastic piece 523; when the smoke amount of the industrial boiler 1 decreases or the temperature decreases during the operation, and the valve plate 42 is in the closed state, the temperature of the water body in the steam generating chamber 22 decreases, but when the temperature is still above 100 ℃, the water level in the steam generating chamber is gradually increased, so that the telescopic rod 512 stretches out, and the temperature of the water body gradually decreases as the water body increases due to the influence of the smoke amount and the water level increases, at this time, the first linear driving assembly 43 sends a signal to the first linear driving assembly 43 under the monitoring of the temperature sensor 221, the first linear driving assembly 43 drives the valve plate 42 to open, and the steam supply amount is maintained through the intervention of the auxiliary heating device 3.

Referring to fig. 4-8: the auxiliary control device 5 further comprises a buffer assembly 53 and a booster assembly 54; the buffer assembly 53 includes a support bar 531 and a third mount 532; the support bar 531 is fixedly installed inside the connection chamber 41; the third mounting seat 532 is slidably mounted on the support bar 531, and the third mounting seat 532 is slidably matched with the push plate 513; the booster assembly 54 includes a hinge seat 541 and a second elastic member 542; two hinge seats 541 are provided, and the two hinge seats 541 are respectively rotatably mounted on the connecting seat and the third mounting seat 532; two ends of the second elastic member 542 are fixedly connected with the two hinge seats 541 respectively.

The invention realizes the function of assisting the movement of the telescopic rod 512 through the buffer component 53 and the power assisting component 54, achieves the effect of accurately abutting and separating the ratchet gear with the arc-shaped clamping block 522, and avoids the situation that the ratchet bar 524 cannot be accurately abutted with the arc-shaped clamping block 522 due to the reduction of buoyancy force suffered by the floating block 514 after the floating block 514 is lifted; the third mounting seat 532 is in sliding fit with the push plate 513, and a certain gap is formed between both ends of the third mounting seat and the push plate 513; because the float 514 has a certain gravity, when the liquid level does not reach a specified height, the float 514 cannot provide enough buoyancy, once the liquid level rises, the float 514 slides upwards under the action of buoyancy, but after a certain distance of rising, the buoyancy received by the float is reduced, so that the contact area of the ratchet bar 524 and the arc-shaped clamping block 522 is small, the ratchet bar 524 and the arc-shaped clamping block 522 cannot be subjected to unidirectional locking, and severe friction can be caused to the ratchet bar 524 and the arc-shaped clamping block 522, the booster assembly 54 is arranged, when the water level of the connecting chamber 41 rises, the float 514 firstly rises for a certain distance until the third mounting seat 532 abuts against the push plate 513, the second elastic piece 542 can block the movement of the third mounting seat 532 along with the continuous rising of the water level, the buoyancy received by the float 514 is increased until the elastic force of the float bar overcomes the elastic force of the second elastic piece 542 and enables the axis of the second elastic piece 542 to be in a vertical state, and the elastic force peak reaches the elastic force peak when the second elastic piece 542 is pushed by the second elastic piece 512 and the second elastic piece 542 is pushed by the second elastic piece 542 to be in a vertical state, and the expansion bar is not matched with the arc-shaped clamping block 522, and the third elastic piece is prevented from continuously contacting the curve 522, and the booster assembly is prevented from being subjected to the stable contact with the curve block 53.

Referring to fig. 1, 3, 4, 9 and 10: the first linear drive assembly 43 includes a rotary drive 431, a bevel gear 432, a screw 433, a link 434, and a first pressure sensor 435; the rotary driver 431 is fixedly installed on the second mounting frame 411; the bevel gears 432 are provided with two bevel gears 432, one bevel gear 432 is fixedly sleeved on the driving end of the rotary driver 431, the other bevel gear 432 is fixedly sleeved on the screw 433, and the two bevel gears 432 are in gear engagement connection; the screw 433 is rotatably installed on the second installation frame 411; the connecting frame 434 is in threaded connection with the screw 433; both ends of the first pressure sensor 435 are fixedly connected with the second mounting frame 411 and the connection frame 434, respectively.

The invention realizes the function of automatically stopping driving when the driving is overloaded while driving the valve plate 42 to move through the rotary driver 431, the bevel gear 432, the screw 433, the connecting frame 434 and the first pressure sensor 435; the rotary driver 431 is preferably a servo motor, and the servo motor is electrically connected with the controller; due to the fact that the auxiliary control device 5 is arranged, when the liquid level is too high, the effect of unidirectional locking of the valve plate 42 is achieved through the cooperation of the second linear driving assembly 51 and the locking assembly 52, therefore, in order to avoid overload of the first linear driving assembly 43, the connecting frame 434 and the first pressure sensor 435 are designed, when the valve plate 42 is driven to move, the rotating driver 431 drives the connecting frame 434 in threaded connection with the rotating driver to move through the transmission driving screw 433 of the bevel gear 432, the connecting frame 434 drives the valve plate 42 to move, when the locking assembly 52 limits the moving direction of the valve plate 42, the rotating driver 431 immediately feeds back a signal to the controller when the first pressure sensor 435 senses that the pressure exceeds a specified value when the valve plate 42 is driven to rise, the controller sends a signal to the rotating driver 431, the rotating driver 431 stops driving, overload is avoided, the pressure monitored by the first pressure sensor 435 is closer to an actual value, and the pressure threshold can be flexibly adjusted through the first pressure sensor 435.

Referring to fig. 1, 2, 11 and 12: the auxiliary heating apparatus 3 includes a heating chamber 31, an induction assembly 32, and a heating plate 33; the heating chamber 31 communicates with the connection chamber 41; the sensing assembly 32 includes a base plate 321, a sensing plate 323, a third elastic member 324, and a second pressure sensor 325; the bottom plate 321 is fixedly installed at the bottom of the heating chamber 31; the bottom plate 321 is provided with a mounting groove 322; the sensing plate 323 is slidably mounted within the mounting slot 322; both ends of the third elastic member 324 are fixedly connected with the bottom plate 321 and the sensing plate 323, respectively; the second pressure sensor 325 is fixedly mounted on the base plate 321.

The invention realizes the function of automatically carrying out auxiliary heating when the water in the heating chamber 31 reaches a certain weight through the heating chamber 31, the bottom plate 321, the induction plate 323, the third elastic piece 324, the second pressure sensor 325 and the heating plate 33, and avoids the condition of dry burning of the heating plate 33; the second steam pipe 311 is fixedly installed on the heating chamber 31, the installation height of the heating chamber 31 resists the steam generation chamber 22, so that water in the steam generation chamber 22 can smoothly flow into the heating chamber 31 when the valve plate 42 is opened, and the heating plate 33 is electrically connected with the controller; under the cooperation of the flow control device 4 and the auxiliary control device 5, when the smoke volume is insufficient, water flows into the heating chamber 31 through the connecting chamber 41, and as the water body in the heating chamber 31 increases, the pressure applied to the sensing plate 323 increases, the third elastic piece 324 contracts, the sensing plate 323 descends, the pressure is sensed by the second pressure sensor 325 until the sensing plate 323 contacts with the second pressure sensor 325, when the pressure value exceeds a preset pressure threshold value, the second pressure sensor 325 feeds back a signal to the controller, the controller receives the signal and then sends the signal to the heating plate 33, the heating plate 33 heats the water body to evaporate to form steam, the steam is transmitted through the second steam pipe 311, when the pressure value sensed by the sensing plate 323 and the second pressure sensor 325 is 0, the signal is fed back to the controller again, and the controller sends the signal to close the heating plate 33.

Referring to fig. 1, 2, 10, 11 and 12: the auxiliary heating apparatus 3 further comprises a connection assembly 34, the connection assembly 34 comprising a connection tube 341 and a flow meter 342; both ends of the connection tube 341 are fixedly connected with the connection chamber 41 and the heating chamber 31, respectively; the flowmeter 342 is fixedly installed on the connection pipe 341.

The invention realizes the function of monitoring the water flow at the valve plate 42 through the connecting pipe 341 and the flowmeter 342, and achieves the effect of monitoring the flue gas working efficiency; since the installation positions of the heating chamber 31 and the steam generating chamber 22 are fixed, when the valve plate 42 is opened, water in the steam generating chamber 22 starts to flow into the heating chamber 31, and the flow rate of water is influenced by the water level in the steam generating chamber 22 and the opening degree of the valve plate 42, and the opening degree of the valve plate 42 is influenced by the temperature, therefore, when the amount of smoke is small or the heat contained in the smoke is low, the condition that the auxiliary heating device 3 is required to continuously heat to generate steam occurs, so that the energy consumption is increased, and after the flow is counted by the connecting assembly 34, when the flow is high, the operator can reduce the energy consumption of the auxiliary heating device 3 by properly reducing the water injection speed of the steam generating chamber 22.

Referring to fig. 1, 2 and 13: the industrial boiler 1 is also provided with a filter assembly 12, and the filter assembly 12 comprises a transmission pipeline 121, a filter plate 122 and a fan 123; two ends of the transmission pipeline 121 are fixedly connected with the smoke exhaust pipe 11 and the fan 123 respectively; the filter plate 122 is fixedly installed inside the transfer duct 121.

The invention realizes the function of filtering impurities in the flue gas through the transmission pipeline 121, the filter plate 122 and the fan 123; the fan 123 is electrically connected with the controller; since the smoke contains a large amount of dust and some harmful substances, the direct discharge can pollute the environment, and for this purpose, the filter plate 122 is installed to filter the smoke, and negative pressure is provided through the fan 123, so that the circulation of the smoke is ensured.

Referring to fig. 1, 2 and 13: a cooling pipeline 131 is also arranged on the smoke exhaust pipe 11; both ends of the cooling pipe 131 are fixedly connected with the smoke exhaust pipe 11 and the transmission pipe 121 respectively; the spiral pipe 132 is sleeved on the cooling pipe 131.

The invention realizes the function of further reducing the temperature of the flue gas through the cooling pipeline 131 and the spiral pipeline 132, and achieves the effect of protecting the filter plate 122 and the fan 123; when the flue gas temperature is higher, it still probably has higher temperature through the back of discharging fume pipe 11 cooling to lead to the fact the damage to filter 122 and fan 123, in order to set up cooling pipeline 131 and helical pipe 132, through with last coolant liquid at helical pipe 132's both ends, cool off cooling pipeline 131's temperature, thereby further reduce the temperature of flue gas, simultaneously, operating personnel can lead to the cold water with helical pipe 132's water inlet end to with helical pipe 132's the other end and steam generation chamber 22's water injection mouth intercommunication, further utilize the waste heat in the flue gas.

The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. An energy-saving carbon-reducing coal-fired boiler for waste heat recovery comprises an industrial boiler (1), wherein a smoke exhaust pipe (11) is fixedly arranged on the industrial boiler (1);

the carbon reduction coal-fired boiler is characterized by further comprising a steam generating device (2), an auxiliary heating device (3) and a flow control device (4);

the steam generating device (2) comprises a first mounting frame (21), a steam generating chamber (22) and a heat conducting plate (23);

the first mounting frame (21) is fixedly connected with the industrial boiler (1);

the steam generation chamber (22) is fixedly arranged on the first mounting frame (21), a temperature sensor (221) is fixedly arranged on the steam generation chamber (22), and the temperature sensor (221) is communicated with the inside of the steam generation chamber (22);

the heat conducting plate (23) is fixedly arranged in the smoke exhaust pipe (11), and the heat conducting plate (23) is communicated with the inside of the steam generation chamber (22);

the auxiliary heating device (3) and the flow control device (4) are fixedly arranged on the first mounting frame (21);

the auxiliary heating device (3) is communicated with the steam generation chamber (22);

the flow control device (4) is located between the steam generation chamber (22) and the auxiliary heating device (3).

2. An energy-efficient carbon-reducing coal-fired boiler with waste heat recovery according to claim 1, characterized in that the flow control device (4) comprises a connecting chamber (41), a valve plate (42) and a first driving assembly;

the connecting chamber (41) is fixedly connected with the steam generating chamber (22) and the internal cavity of the connecting chamber is communicated with the inside of the steam generating chamber (22);

a second mounting frame (411) is fixedly arranged on the connecting chamber (41), and the second mounting frame (411) is fixedly connected with the auxiliary heating device (3);

the valve plate (42) is slidably mounted on the second mounting frame (411);

the first linear driving assembly (43) is fixedly arranged on the second mounting frame (411), and the driving end of the first linear driving assembly (43) is fixedly connected with the valve plate (42).

3. The energy-saving carbon-reduction coal-fired boiler with waste heat recovery according to claim 2, wherein the carbon-reduction coal-fired boiler further comprises an auxiliary control device (5), and the auxiliary control device (5) comprises a second linear driving assembly (51) and a locking assembly (52);

the second linear driving assembly (51) comprises a first mounting seat (511), a telescopic rod (512), a push plate (513), a floating block (514), a first rack (515), a driving roller (516) and a second rack (517);

the first mounting seat (511) is fixedly arranged in the connecting chamber (41);

the telescopic rod (512) is slidably arranged on the first mounting seat (511);

the floating block (514) is slidably arranged on the first mounting seat (511);

the first rack (515) is fixedly arranged on the floating block (514);

the driving roller (516) is rotatably arranged on the first mounting seat (511), and the first rack (515) is in driving connection with the driving roller (516);

the second rack (517) is slidably arranged on the first mounting seat (511), the second rack (517) is fixedly connected with the telescopic rod (512), and the second rack (517) is in transmission connection with the transmission roller (516);

the locking assembly (52) is fixedly mounted to the valve plate (42).

4. An energy-efficient carbon-reducing coal-fired boiler with waste heat recovery according to claim 3, characterized in that the locking assembly (52) comprises a second mounting seat (521), an arc-shaped clamping block (522), a first elastic member (523) and a ratchet bar (524);

the second mounting seat (521) is fixedly arranged on the valve plate (42);

the arc-shaped clamping block (522) is slidably mounted on the second mounting seat (521);

two ends of the first elastic piece (523) are fixedly connected with the second mounting seat (521) and the arc-shaped clamping block (522) respectively;

the ratchet bar (524) is fixedly arranged on the push plate (513).

5. An energy-saving carbon-reducing coal-fired boiler with waste heat recovery according to claim 3, characterized in that the auxiliary control device (5) further comprises a buffer component (53) and a booster component (54);

the buffer component (53) comprises a supporting bar (531) and a third mounting seat (532);

the support bar (531) is fixedly arranged in the connecting chamber (41);

the third mounting seat (532) is slidably mounted on the supporting bar (531), and the third mounting seat (532) is slidably matched with the push plate (513);

the power assisting component (54) comprises a hinging seat (541) and a second elastic piece (542);

two hinge seats (541) are arranged, and the two hinge seats (541) are respectively and rotatably arranged on the connecting seat and the third mounting seat (532);

two ends of the second elastic piece (542) are fixedly connected with the two hinging seats (541) respectively.

6. The energy-efficient carbon-reduction coal-fired boiler with waste heat recovery according to claim 2, wherein the first linear drive assembly (43) comprises a rotary drive (431), a bevel gear (432), a screw (433), a connecting frame (434) and a first pressure sensor (435);

the rotary driver (431) is fixedly arranged on the second mounting frame (411);

the bevel gears (432) are arranged, one bevel gear (432) is fixedly sleeved on the driving end of the rotary driver (431), the other bevel gear (432) is fixedly sleeved on the screw (433), and the two bevel gears (432) are in gear engagement connection;

the screw (433) is rotatably arranged on the second mounting frame (411);

the connecting frame (434) is in threaded connection with the screw (433);

the two ends of the first pressure sensor (435) are respectively fixedly connected with the second mounting frame (411) and the connecting frame (434).

7. An energy-saving carbon-reducing coal-fired boiler with waste heat recovery according to claim 1, characterized in that the auxiliary heating device (3) comprises a heating chamber (31), an induction component (32) and a heating plate (33);

the heating chamber (31) is communicated with the connecting chamber (41);

the sensing assembly (32) comprises a base plate (321), a sensing plate (323), a third elastic piece (324) and a second pressure sensor (325);

the bottom plate (321) is fixedly arranged at the bottom of the heating chamber (31);

the bottom plate (321) is provided with a mounting groove (322);

the induction plate (323) is slidably mounted in the mounting groove (322);

both ends of the third elastic piece (324) are fixedly connected with the bottom plate (321) and the induction plate (323) respectively;

the second pressure sensor (325) is fixedly mounted on the base plate (321).

8. The energy-saving carbon-reducing coal-fired boiler with waste heat recovery according to claim 7, wherein the auxiliary heating device (3) further comprises a connecting assembly (34), and the connecting assembly (34) comprises a connecting pipe (341) and a flowmeter (342);

two ends of the connecting pipe (341) are fixedly connected with the connecting chamber (41) and the heating chamber (31) respectively;

the flowmeter (342) is fixedly arranged on the connecting pipe (341).

9. The waste heat recovery energy-saving carbon reduction coal-fired boiler according to claim 1, wherein a filter assembly (12) is further arranged on the industrial boiler (1), and the filter assembly (12) comprises a transmission pipeline (121), a filter plate (122) and a fan (123);

two ends of the transmission pipeline (121) are fixedly connected with the smoke exhaust pipe (11) and the fan (123) respectively;

the filter plate (122) is fixedly installed inside the transmission pipeline (121).

10. The energy-saving carbon-reducing coal-fired boiler with waste heat recovery according to claim 9, wherein the smoke exhaust pipe (11) is also provided with a cooling pipeline (131);

two ends of the cooling pipeline (131) are fixedly connected with the smoke exhaust pipe (11) and the transmission pipeline (121) respectively;

the spiral pipeline (132) is sleeved on the cooling pipeline (131).