CN108731268A - The low nitrogen negative pressure Hot water units of dish-shaped flame and its operation method - Google Patents
The low nitrogen negative pressure Hot water units of dish-shaped flame and its operation method Download PDFInfo
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- CN108731268A CN108731268A CN201810721807.2A CN201810721807A CN108731268A CN 108731268 A CN108731268 A CN 108731268A CN 201810721807 A CN201810721807 A CN 201810721807A CN 108731268 A CN108731268 A CN 108731268A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
- F24H7/04—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
- F24H7/045—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using fluid fuel
- F24H7/0466—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using fluid fuel the transfer fluid being water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Abstract
Invention is related to a kind of low nitrogen negative pressure Hot water units of dish-shaped flame and its operation method, is equipped with casing, casing front end is equipped with burner, which is equipped with fuel gas inlet, air intlet and gas inlet；And it is equipped with mixing chamber, spinning disk is equipped in burner；It is equipped with combustion chamber and water-cooling wall in casing, is arranged equipped with circulating water pipe at combustion chamber rear portion；It is equipped with upper space on tubulation top, water-cooling wall, tubulation and upper space are each filled with recirculated water；Heat exchanger tube is installed in upper space, is outer supplying hot water in the heat exchanger tube, smoke discharge pipe is equipped in the other side of the relative combustion room of the tubulation；The air extractor for making circulation keep negative pressure is equipped in the upper space；And it is equipped with explosion-protection equipment.It is additionally provided with PLC controller and carries out the multiple sensors and self_clocking converter of signal and control connection with it.The present invention uses the low nitrogen negative pressure of dish-shaped flame manually or autocontrol operation, structurally consummate reasonable, has the advantages that significant efficient, energy-saving and environmental protection, safety, automatic operating.
Description
Technical field
The present invention relates to it is a kind of generate hot water device, be it is a kind of using natural gas as efficient, the low denitrogen oxide of fuel,
Negative pressure operation, safe Hot water units.The low nitrogen negative pressure Hot water units of specifically a kind of dish flame and its operation method, one kind are applicable in
In the hot water apparatus of various supplying hot water demands.
Background technology
Currently, it is usually gas fired-boiler to generate the device of hot water by combustion of natural gas, energy conservation and environmental protection is boiler industry
Inevitable requirement, it is more and more tighter to the requirement that boiler smoke is low-nitrogen discharged with the raising of national environmental protection emission request.Meanwhile by
Pressure vessel is usually belonged in traditional boiler, furnace body is pressure-containing member, therefore the safety of explosion is likely to occur when operation
Hidden danger.In addition the thermal efficiency and the automation and intelligentification degree of operation are also to be improved.Hence it is highly desirable to propose a kind of low nitrogen oxygen
The even negative pressure operation of compound discharge, low pressure, more environment-friendly and safer, the hot water production device of the energy-efficient automatic operating of energy,
To solve the deficiency of conventional hot water boiler.
Invention content
In order to solve the above technical problem, the present invention provides a kind of low nitrogen negative pressure Hot water units of dish flame and its operation sides
Method.The unit vertically-mounted, closely spaced array arrangement structure using dish-shaped flame burning technology and internal circulating hot water tubulation, makes
Hot water generates speed and is substantially improved, and improves the efficiency and heat exchange efficiency of combustion heating, realizes preferably energy-efficient effect；It is logical
Surrounding arrangement water-cooling wall in the combustion chamber and flue gas recirculation are crossed using the oxygen concentration for reducing combustion air, reduces ignition temperature, from
And the generation of NOx is reduced, realize that flue gas is low-nitrogen discharged；Using negative pressure running technology, the safety of unit operation is substantially increased；
And automatic control system is set.Have the advantages that significant efficient, energy-saving and environmental protection, safety, automatic operating.
The present invention the technical solution provided be：
A kind of low nitrogen negative pressure Hot water units of dish flame, are equipped with casing, it is characterized in that：It is equipped with burner in the front end of casing,
The burner is equipped with fuel gas inlet, air intlet and the gas inlet for recycling sharp flue gas, and fuel gas inlet is connected to gas valve, air
Import is connected to air-blaster, and gas inlet is connected to smoke induced draught fan；And it is mixed equipped with the combustion air that air and flue gas mix
Gas chamber is equipped with the spinning disk for making combustion gas and combustion air mix and forming swirling eddy inside the burner of burner；In casing
Combustion chamber is equipped with before the burner of inner burner, surrounding is disposed with the water cooling that the water pipe being vertically arranged is constituted in the combustion chamber
Wall, in casing be equipped with combustion chamber in close proximity to cycle water row tube, the tubulation be vertical closely spaced array or arranged in a crossed manner
Steel pipe；Upper space is equipped in the casing on tubulation top, the water-cooling wall, tubulation and upper space and lower part water tank are each filled with
Interconnected recirculated water constitutes circulation；The heat exchanger tube of pipe heat exchanger is installed in upper space, is in the heat exchanger tube
Outer supplying hot water is connected to the inlet and outlet of outer supplying hot water, which is connected to heating system；In the opposite combustion of the tubulation
The other side of burning room is equipped with smoke discharge pipe, which is equipped with flue gas recirculation using outlet, which utilizes
Mouth is connected to the gas inlet of the burner；The pumping dress for making circulation keep negative pressure is equipped in the upper space
It sets.
The present invention further improves and the additional project of implementation is：
The upper space is equipped with the thermometer and pressure gauge of display its internal temperature and pressure；And equipped with control safety pressure
The flush type of power dissolves bolt；It is equipped with the explosion-protection equipment with combustion chamber in the casing lower part；The smoke discharge pipe with set
The flue gas waste heat recovery apparatus connection set, the outlet of smoke discharge pipe are equipped with smoke eliminator；The upper space is equipped with row
Air valve, the bottom of shell below tubulation is equipped with discharge outlet prevents tube wall corrosion ponding is discharged.
The operation method of the low nitrogen negative pressure Hot water units of above-mentioned dish-shaped flame：
1) disposably perfusion softens recirculated water or cries heat medium water to setting liquid level in circulation, i.e., tubulation is upper
Mouthful；
2) gas valve, air blower and fuel gas inlet, air intlet are opened, air bleeding valve is opened, puts burner, Smaller load pair
Heat medium water heats up, and due to the heated boiling of heat medium water, increases the air stored in procapsid with temperature and is discharged by steam, then
Close drain tap；
3) start hot-water heating system circulating pump outside pipe heat exchanger, so that outer supplying hot water is circulated, heating agent water vapour
Tube Sheet of Heat Exchanger outer surface condense, steam by the cool water heating in heat exchanger tube be hot water after be delivered to user, the heating agent after condensation
Water forms water droplet and falls, and heat medium water is vaporized by heating again, and the recirculated water in circulation starts the cycle over operation；
4) when the pressure of the pressure gauge of upper space instruction is more than setting value, the air extractor of upper space is opened, and
It is -30kPa, positive and negative 5kPa so that upper space is kept setting negative pressure value, the negative pressure value；
5) and then increase burner load, while opening air-introduced machine and gas inlet, make partial fume and combustion air by
1：3 ratios form centrifugal rotation air-flow by spinning disk after being mixed in mixed smoke box and enter burner hearth, form dish in the combustion chamber
Flame heats heat medium water；Unit brings into operation；
6) it shuts down：Closing gas valve, air blower and air-introduced machine, and fuel gas inlet, air intlet and gas inlet are closed, it is real
Now shut down.
This Hot water units further improves and the additional project of implementation is：
It is equipped with circulating water temperature sensor and cyclic hydrostatic pressure force snesor in the cycle water circulation system；In the burning
Room is equipped with chamber temperature sensor and combustion chamber pressure sensor；The gas valve and air-blaster, smoke induced draught fan are set
There is the self_clocking converter of control flow；It is equipped with nox concentration sensor in smoke evacuation tracheal strips；And it is equipped with PLC controller and institute
State circulating water temperature sensor and cyclic hydrostatic pressure force snesor, chamber temperature sensor and combustion chamber pressure sensor, combustion gas
The self_clocking converter of valve and air-blaster and smoke induced draught fan, nox concentration sensor carry out signal and control connection；
The control mode is：When PLC controller obtains circulating water temperature or hypotony or the temperature of combustion chamber from respective sensor
Or hypotony signal when, control gas valve increases the flow of combustion gas, and the flow of gas inlet is reduced, until temperature and pressure
Power reaches normal value；Conversely, when PLC controller obtains circulating water temperature or hypertonia or combustion chamber from respective sensor
When the signal of temperature or hypertonia, control gas valve reduces the flow of combustion gas, and increases the flow of gas inlet, until temperature
Reach normal value with pressure；When PLC controller from respective sensor obtain nitrous oxides concentration it is exceeded when, control reduces air
Flow, or increase the flow of flue gas, until nitrous oxides concentration drops to value up to standard；And it is controlled equipped with alarm signal generator and PLC
Device processed carries out control connection, and control mode is：When PLC controller is abnormal to temperature, pressure and nitrous oxides concentration value
When adjusting the value recovery normal value that cannot make temperature, pressure and nitrous oxides concentration, PLC controller controls alarm signal generator
Send out alarm signal.
It is further provided with wireless remote sender unit and carries out control with PLC controller and connect, control mode is：Work as hair
When raw alarm signal, alarm signal is sent to the remote monitor of setting by PLC controller control wireless remote sender unit
On unit maintenance personnel's mobile phone.
The operation method of the low nitrogen negative pressure Hot water units of above-mentioned dish-shaped flame has steps of：
1) control parameter is set in PLC controller：Circulating water temperature range of normal value：60-75 DEG C, circulating water pressure
Range of normal value：- 28kPa--32kPa, chamber temperature range of normal value：800 DEG C or so, chamber pressure normal value model
It encloses：28kPa-32kPa；Nitrous oxides concentration range of normal value：Less than 30mg/m3；
2) disposably perfusion softens recirculated water or cries heat medium water to setting liquid level in circulation, i.e., tubulation is upper
Mouthful；
3) gas valve, air blower and fuel gas inlet, air intlet are opened, air bleeding valve is opened, puts burner, Smaller load pair
Heat medium water heats up, and due to the heated boiling of heat medium water, increases the air stored in procapsid with temperature and is discharged by steam, then
Close drain tap；
4) start hot-water heating system circulating pump outside pipe heat exchanger, so that outer supplying hot water is circulated, heating agent water vapour
Tube Sheet of Heat Exchanger outer surface condense, steam by the cool water heating in heat exchanger tube be hot water after be delivered to user, the heating agent after condensation
Water forms water droplet and falls, and heat medium water is vaporized by heating again, and the recirculated water in circulation starts the cycle over operation；
5) when the pressure of the pressure gauge of upper space instruction is more than setting value, the air extractor of upper space is opened, and
It is -30kPa, positive and negative 5kPa so that upper space is kept setting negative pressure value, the negative pressure value；
6) and then increase burner load, while opening air-introduced machine and gas inlet, make partial fume and combustion air by
1：3 ratios form centrifugal rotation air-flow by spinning disk after being mixed in mixed smoke box and enter burner hearth, form dish in the combustion chamber
Flame heats heat medium water；Unit brings into operation；
7) run switch of PLC controller is opened, unit starts auto-controll operation；
8) it shuts down：Close PLC controller run switch, closing gas valve, air blower and air-introduced machine, and close combustion gas into
Mouth, air intlet and gas inlet are realized and are shut down.
The low nitrogen negative pressure Hot water units of dish-shaped flame and its operation method of the present invention have the advantages that：
1) thermal efficiency is greatly improved compared with conventional pressure hot-water boiler, has obvious power savings advantages；
2) flue gas emission meets or exceeds the purification of country and low-nitrogen discharged standard, excellent with obviously high-environmental
Point；
3) security risk that conventional pressure boiler is easy to happen explosion is eliminated, it is easy that operating personnel are on duty, and has saved people
The cost of member training and management, and the safety produced greatly improves；
4) both can with manual control can also Automatic Control, flexible operation, high degree of automation may be implemented seldom to be worth
Class's personnel's operation and remote monitoring, improve production efficiency and realize automation for production management, intelligent.
Description of the drawings
Fig. 1 is the front cross-sectional structural schematic diagram of the present invention.
Fig. 2 is the cross-sectional cut-away structural representation of the present invention.
Fig. 3 is the longitudinal sections the A-A schematic cross-sectional view of Fig. 1.
Fig. 4 is the side structure schematic view of the hot water inlet outlet side of the present invention.
Fig. 5 is the side structure schematic view of the smoke discharge tube side of the present invention.
Specific implementation mode
The present invention will be described with reference to the accompanying drawings and examples：Embodiment 1：Referring to attached drawing, a kind of low nitrogen of dish flame
Negative pressure Hot water units are equipped with casing 1, are equipped with burner 3 in the front end of casing, which is equipped with fuel gas inlet, air intlet
With the gas inlet of the sharp flue gas of cycle, fuel gas inlet is connected to gas valve, and air intlet is connected to air-blaster 5, flue gas into
Mouth is connected to smoke induced draught fan 4；And the combustion air mixing chamber 7 mixed equipped with air and flue gas, inside the burner of burner
Equipped with making combustion gas and combustion air mix and form the spinning disk of swirling eddy；Combustion is equipped with before the burner of casing inner burner
Room 16 is burnt, surrounding is disposed with the water-cooling wall 14 that the water pipe that is vertically arranged is constituted in the combustion chamber, is equipped in casing and combustion chamber
In close proximity to cycle water row tube, the tubulation be vertical closely spaced array or steel pipe 15 arranged in a crossed manner；Casing on tubulation top
Interior to be equipped with upper space 9, the water-cooling wall, tubulation and upper space and lower part water tank are each filled with interconnected recirculated water, structure
At circulation；The heat exchanger tube 10 of installation pipe heat exchanger in upper space, the interior heat exchanger tube is outer supplying hot water, with outer heat supply
The inlet and outlet 8 of water is connected to, which is connected to heating system；The other side in the relative combustion room of the tubulation
Equipped with smoke discharge pipe 13, which is equipped with flue gas recirculation using outlet, which utilizes outlet and the combustion
The gas inlet of burner is connected to；The air extractor 12 for making circulation keep negative pressure is equipped in the upper space.
The upper space is equipped with the thermometer and pressure gauge of display its internal temperature and pressure；And equipped with control safety pressure
The flush type of power dissolves bolt 11；It is equipped with the explosion proof door 2 with combustion chamber in the casing lower part；The smoke discharge pipe with set
The flue gas waste heat recovery apparatus connection set, the outlet of smoke discharge pipe are equipped with smoke eliminator；The upper space is equipped with row
Air valve, the bottom of shell below tubulation is equipped with discharge outlet prevents tube wall corrosion ponding is discharged.
The operation method of the low nitrogen negative pressure Hot water units of dish-shaped flame of above-mentioned the present embodiment, using following steps：
1) disposably perfusion softens recirculated water or cries heat medium water to setting liquid level in circulation：Tubulation it is suitable for reading；
2) gas valve, air blower and fuel gas inlet, air intlet are opened, air bleeding valve is opened, puts burner, Smaller load pair
Heat medium water heats up, and due to the heated boiling of heat medium water, increases the air stored in procapsid with temperature and is discharged by steam, then
Close drain tap.
3) start hot-water heating system circulating pump outside pipe heat exchanger, so that outer supplying hot water is circulated, heating agent water vapour
Tube Sheet of Heat Exchanger outer surface condense, steam by the cool water heating in heat exchanger tube be hot water after be delivered to user, the heating agent after condensation
Water forms water droplet and falls, and heat medium water is vaporized by heating again, and the recirculated water in circulation starts the cycle over operation.
4) when the pressure of the pressure gauge of upper space instruction is more than setting value, the air extractor of upper space is opened, and
It is -30kPa so that upper space is kept setting negative pressure value, the negative pressure value,；
5) and then increase burner load, while opening air-introduced machine and gas inlet, make partial fume and combustion air by
1：3 ratios form centrifugal rotation air-flow by spinning disk after being mixed in mixed smoke box and enter burner hearth, form dish in the combustion chamber
Flame heats heat medium water；Unit brings into operation；
6) it shuts down：The present embodiment trial operation one week, normal operation, closing gas valve, air blower and air-introduced machine, and close combustion
Gas import, air intlet and gas inlet are realized and are shut down.
Embodiment 2：The low nitrogen negative pressure Hot water units of dish-shaped flame, optimize on the basis of 1 structure of embodiment, in recirculated water
The circulatory system is equipped with circulating water temperature sensor and cyclic hydrostatic pressure force snesor；It is sensed equipped with chamber temperature in the combustion chamber
Device and combustion chamber pressure sensor；The gas valve and air-blaster, smoke induced draught fan are equipped with the self-control frequency-variable of control flow
Device；It is equipped with nox concentration sensor in smoke evacuation tracheal strips；And equipped with PLC controller and the circulating water temperature sensor and
Cyclic hydrostatic pressure force snesor, chamber temperature sensor and combustion chamber pressure sensor, gas valve and air-blaster, flue gas draw
Self_clocking converter, the nox concentration sensor of wind turbine carry out signal and control connection；The control mode is：When PLC is controlled
Device processed from respective sensor obtain circulating water temperature or hypotony or combustion chamber temperature or hypotony signal when, control
Gas valve processed increases the flow of combustion gas, and reduces the flow of gas inlet, until temperature and pressure reaches normal value；Conversely, working as
PLC controller obtains the temperature of circulating water temperature or hypertonia or combustion chamber or the signal of hypertonia from respective sensor
When, control gas valve reduces the flow of combustion gas, and increases the flow of gas inlet, until temperature and pressure reaches normal value；When
PLC controller from respective sensor obtain nitrous oxides concentration it is exceeded when, control reduce air flow, or increase flue gas stream
Amount, until nitrous oxides concentration drops to value up to standard；And carry out control with PLC controller equipped with alarm signal generator and connect,
Control mode is：When PLC controller cannot make temperature, pressure to temperature, pressure and the abnormal adjusting of nitrous oxides concentration value
When restoring normal value with the value of nitrous oxides concentration, PLC controller control alarm signal generator sends out alarm signal；In addition also
Control is carried out equipped with wireless remote sender unit with PLC controller to connect, control mode is：When alarm signal occurs,
Alarm signal is sent to remote monitor and the unit maintenance personnel of setting by PLC controller control wireless remote sender unit
On mobile phone.
The operation method of the above-mentioned Hot water units of the present embodiment, using following steps：
1) control parameter is set in PLC controller：Circulating water temperature range of normal value：60-75 DEG C, circulating water pressure
Range of normal value：- 28kPa--32kPa, chamber temperature range of normal value：800 DEG C or so, chamber pressure normal value model
It encloses：28kPa-32kPa；Nitrous oxides concentration range of normal value：Less than 30mg/m3；
2) disposably perfusion softens recirculated water or cries heat medium water to setting liquid level in circulation：Tubulation it is suitable for reading；
3) gas valve, air blower and fuel gas inlet, air intlet are opened, air bleeding valve is opened, puts burner, Smaller load pair
Heat medium water heats up, and due to the heated boiling of heat medium water, increases the air stored in procapsid with temperature and is discharged by steam, then
Close drain tap.
4) start hot-water heating system circulating pump outside pipe heat exchanger, so that outer supplying hot water is circulated, heating agent water vapour
Tube Sheet of Heat Exchanger outer surface condense, steam by the cool water heating in heat exchanger tube be hot water after be delivered to user, the heating agent after condensation
Water forms water droplet and falls, and heat medium water is vaporized by heating again, and the recirculated water in circulation starts the cycle over operation.
5) when the pressure of the pressure gauge of upper space instruction is more than setting value, the air extractor of upper space is opened, and
It is -30kPa so that upper space is kept setting negative pressure value, the negative pressure value；
6) and then increase burner load, while opening air-introduced machine and gas inlet, make partial fume and combustion air by
1：3 ratios form centrifugal rotation air-flow by spinning disk after being mixed in mixed smoke box and enter burner hearth, form dish in the combustion chamber
Flame heats heat medium water；Unit brings into operation；
7) run switch of PLC controller is opened, unit starts auto-controll operation；
8) it shuts down：The present embodiment normal operation is shut down after a week：Close PLC controller run switch, closing gas valve, drum
Wind turbine and air-introduced machine, and fuel gas inlet, air intlet and gas inlet are closed, it realizes and shuts down.
Above-mentioned two embodiments operational effect has apparent advantage compared with conventional hot water boiler：Energy-saving effect：Averagely economize on electricity 30%,
It saves artificial：Embodiment 1 is 20%, and embodiment 2 is 80%；Discharge environment protecting：Less than required standard 20% up to standard；Safety effect
Fruit：Zero defects during operation, no explosion dangerous situation；Worker is on duty more flexible, and production management more simplifies efficient, and realizes remote
Range monitoring.
It is noted that a variety of changes and improvements can also be made on the basis of basic scheme of the present invention, but these Datong District
The technical solution of the changes and improvements of small difference should also belong to the protection domain of patent of the present invention.
Claims (5)
1. a kind of low nitrogen negative pressure Hot water units of dish flame, are equipped with casing (1), it is characterized in that：It is equipped with burner in the front end of casing
(3), which is equipped with fuel gas inlet, air intlet and the gas inlet for recycling flue gas, and fuel gas inlet connects with gas valve
Logical, air intlet is connected to air-blaster (5), and gas inlet is connected to smoke induced draught fan (4)；And it is mixed equipped with air and flue gas
The combustion air mixing chamber (7) of conjunction, being equipped with inside the burner of burner makes combustion gas and combustion air mix and forms swirling eddy
Spinning disk；Combustion chamber (16) are equipped with before the burner of casing inner burner, surrounding is disposed with vertical row in the combustion chamber
The water-cooling wall (14) that the water pipes of row is constituted, be equipped in casing with combustion chamber in close proximity to cycle water row tube, which is perpendicular
Straight closely spaced array or steel pipe arranged in a crossed manner (15)；In the casing on tubulation top be equipped with upper space (9), the water-cooling wall,
Tubulation, upper space and lower part water tank are each filled with interconnected recirculated water, constitute circulation；Installing pipe in upper space
The heat exchanger tube (10) of formula heat exchanger, the interior heat exchanger tube is outer supplying hot water, is connected to the inlet and outlet (8) of outer supplying hot water, the heat
Water inlet and outlet are connected to heating system；It is equipped with smoke discharge pipe (13) in the other side of the relative combustion room of the tubulation,
The smoke discharge pipe is equipped with flue gas recirculation using outlet, which is connected using outlet and the gas inlet of the burner
It is logical；The air extractor (12) for making circulation keep negative pressure is equipped in the upper space.
2. Hot water units according to claim 1, it is characterized in that：The upper space, which is equipped with, shows its internal temperature and pressure
The thermometer and pressure gauge of power；And equipped with the flush type dissolving bolt (11) of control safe pressure；The casing lower part be equipped with
The explosion-protection equipment (2) of combustion chamber；The smoke discharge pipe is connected to the flue gas waste heat recovery apparatus of setting, smoke discharge pipe
Outlet be equipped with smoke eliminator；The upper space is equipped with air bleeding valve, and the bottom of shell below tubulation is equipped with discharge outlet, uses
Ponding is discharged, tube wall corrosion is prevented.
3. the operation method of the low nitrogen negative pressure Hot water units of dish flame according to claim 2, it is characterized in that having following step
Suddenly：
1) disposably perfusion softens recirculated water or cries heat medium water to setting liquid level in circulation, i.e., tubulation is suitable for reading；
2) gas valve, air blower and fuel gas inlet, air intlet are opened, air bleeding valve is opened, puts burner, Smaller load is to heating agent
Water heats up, and due to the heated boiling of heat medium water, increases the air stored in procapsid with temperature and is discharged by steam, is then shut off
Drain tap；
3) start hot-water heating system circulating pump outside pipe heat exchanger, so that outer supplying hot water is circulated, heating agent water vapour is changing
Cool water heating in heat exchanger tube is to be delivered to user after hot water by the condensation of hot device tube outer surface, steam, the heat medium water shape after condensation
It is fallen at water droplet, heat medium water is vaporized by heating again, and the recirculated water in circulation starts the cycle over operation.
4) when the pressure of the pressure gauge of upper space instruction is more than setting value, the air extractor of upper space is opened, and make
It is -30kPa, positive and negative 5kPa that portion space, which keeps setting negative pressure value, the negative pressure value,；
5) and then increase burner load, while opening air-introduced machine and gas inlet, make partial fume with combustion air by 1：3 ratios
Example forms centrifugal rotation air-flow by spinning disk after being mixed in mixed smoke box and enters combustion chamber, forms dish fire in the combustion chamber
Flame heats heat medium water；Unit brings into operation；
6) it shuts down：Closing gas valve, air blower and air-introduced machine, and fuel gas inlet, air intlet and gas inlet are closed, realization stops
Machine.
4. Hot water units according to claim 2, it is characterized in that：It is equipped with circulating water temperature in the cycle water circulation system
Sensor and cyclic hydrostatic pressure force snesor；It is equipped with chamber temperature sensor and combustion chamber pressure sensor in the combustion chamber；
The gas valve and air-blaster, smoke induced draught fan are equipped with the self_clocking converter of control flow；It is equipped in smoke discharge pipe
Nox concentration sensor；And equipped with PLC controller and the circulating water temperature sensor and cyclic hydrostatic pressure force snesor, combustion
Burn room temperature sensor and the self_clocking converter of combustion chamber pressure sensor, gas valve and air-blaster and smoke induced draught fan,
Nox concentration sensor carries out signal and control connects；The control mode is：When PLC controller is obtained from respective sensor
Circulating water temperature or hypotony or combustion chamber temperature or hypotony signal when, control gas valve increases combustion gas
Flow, and the flow of gas inlet is reduced, until temperature and pressure reaches normal value；Conversely, working as PLC controller slave phase inductive sensing
When device obtains the signal of the temperature or hypertonia of circulating water temperature or hypertonia or combustion chamber, control gas valve reduces combustion
The flow of gas, and increase the flow of gas inlet, until temperature and pressure reaches normal value；When PLC controller slave phase inductive sensing
When device acquisition nitrous oxides concentration is exceeded, control reduces the flow of air, or increases the flow of flue gas, until nitrous oxides concentration
Drop to value up to standard；And carry out control with PLC controller equipped with alarm signal generator and connect, control mode is：When PLC is controlled
Device cannot make the value of temperature, pressure and nitrous oxides concentration extensive temperature, pressure and the abnormal adjusting of nitrous oxides concentration value
When multiple normal value, PLC controller control alarm signal generator sends out alarm signal；It is further provided with the transmission of wireless remote signal
Device carries out control with PLC controller and connect, and control mode is：When alarm signal occurs, PLC controller controls wireless remote
Alarm signal is sent on the remote monitor and unit maintenance personnel's mobile phone of setting by sender unit.
5. the operation method of Hot water units according to claim 4, it is characterized in that having steps of：
1) control parameter is set in PLC controller：Circulating water temperature range of normal value：60-75 DEG C, circulating water pressure it is normal
It is worth range：- 28kPa--32kPa, 800 DEG C or so of chamber temperature, chamber pressure range of normal value：28kPa-32kPa；
Nitrous oxides concentration range of normal value：Less than 30mg/m3；
2) disposably perfusion softens recirculated water or cries heat medium water to setting liquid level in circulation, i.e., tubulation is suitable for reading；
3) gas valve, air blower and fuel gas inlet, air intlet are opened, air bleeding valve is opened, puts burner, Smaller load is to heating agent
Water heats up, and due to the heated boiling of heat medium water, increases the air stored in procapsid with temperature and is discharged by steam, is then shut off
Drain tap.
4) start hot-water heating system circulating pump outside pipe heat exchanger, so that outer supplying hot water is circulated, heating agent water vapour is changing
Cool water heating in heat exchanger tube is to be delivered to user after hot water by the condensation of hot device tube outer surface, steam, the heat medium water shape after condensation
It is fallen at water droplet, heat medium water is vaporized by heating again, and the recirculated water in circulation starts the cycle over operation.
5) when the pressure of the pressure gauge of upper space instruction is more than setting value, the air extractor of upper space is opened, and make
It is -30kPa, positive and negative 5kPa that portion space, which keeps setting negative pressure value, the negative pressure value,；
6) and then increase burner load, while opening air-introduced machine and gas inlet, make partial fume with combustion air by 1：3 ratios
Example forms centrifugal rotation air-flow by spinning disk after being mixed in mixed smoke box and enters burner hearth, forms dish-shaped flame in the combustion chamber,
Heat medium water is heated；Unit brings into operation；
7) run switch of PLC controller is opened, unit starts auto-controll operation；
8) it shuts down：PLC controller run switch, closing gas valve, air blower and air-introduced machine are closed, and closes fuel gas inlet, sky
Gas import and gas inlet are realized and are shut down.
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| CN117029276A (en) * | 2023-10-09 | 2023-11-10 | 上海焱晶燃烧设备检测有限公司 | Vertical vacuum phase-change heating furnace |
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