CN208536378U - The low nitrogen negative pressure Hot water units of dish-shaped flame - Google Patents
The low nitrogen negative pressure Hot water units of dish-shaped flame Download PDFInfo
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- CN208536378U CN208536378U CN201821051393.9U CN201821051393U CN208536378U CN 208536378 U CN208536378 U CN 208536378U CN 201821051393 U CN201821051393 U CN 201821051393U CN 208536378 U CN208536378 U CN 208536378U
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Abstract
Utility model is related to a kind of low nitrogen negative pressure Hot water units of dish-shaped flame, 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 at combustion chamber rear portion equipped with circulating water pipe；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, is equipped with smoke discharge pipe 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 utility model 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 utility model relates to a kind of devices for generating hot water, are a kind of using natural gas as efficient, the low denitrogen oxygen of fuel
Compound, negative pressure operation, safe Hot water units.The low nitrogen negative pressure Hot water units of specifically a kind of dish flame, one kind are suitable for various
The hot water apparatus of supplying hot water demand.
Background technique
Currently, generating the device of hot water by combustion of natural gas is usually gas fired-boiler, 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.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of low nitrogen negative pressure Hot water units of dish-shaped flame.The machine
Group vertically-mounted, closely spaced array arrangement structure using dish-shaped flame burning technology and internal circulating hot water tubulation, produces hot water
Raw speed is substantially improved, and improves the efficiency and heat exchange efficiency of combustion heating, realizes preferably energy-efficient effect；By firing
Indoor surrounding arrangement water-cooling wall and flue gas recirculation are burnt using the oxygen concentration for reducing combustion air, ignition temperature are reduced, to reduce
The generation of NOx realizes that flue gas is low-nitrogen discharged；Using negative pressure running technology, the safety of unit operation is substantially increased；And it is arranged
Automatic control system.Have the advantages that significant efficient, energy-saving and environmental protection, safety, automatic operating.
The provided technical solution of the utility model is:
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 to be equipped with the combustion air that air and flue gas mix
Gas chamber is equipped with the spinning disk for mixing combustion gas and combustion air 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, be equipped in casing and combustion chamber in close proximity to circulation 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 additional project that the utility model further improves and implements is:
The upper space is equipped with the thermometer and pressure gauge of display its internal temperature and pressure；And it is equipped with control safety pressure
The flush type of power dissolves bolt；The explosion-protection equipment with combustion chamber is equipped 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 flue gas purification device；The upper space is equipped with row
Air valve, the bottom of shell below tubulation is equipped with discharge outlet prevents tube wall from corroding ponding is discharged.
The additional project that this Hot water units further improves and implements is:
Circulating water temperature sensor and cyclic hydrostatic pressure force snesor are equipped in the circulation 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；Nox concentration sensor is intratracheally equipped in smoke evacuation；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 from respective sensor the temperature of circulating water temperature or hypotony or combustion chamber
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 equipped with alarm signal generator and PLC control
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
Issue alarm signal.
It is further provided with wireless remote sender unit and PLC controller carries out control connection, control mode is: working as hair
When raw alarm signal, PLC controller control wireless remote sender unit sends alarm signal to the remote monitor of setting
On unit maintenance personnel's mobile phone.
The low nitrogen negative pressure Hot water units of the dish-shaped flame of the utility model 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 and low-nitrogen discharged standard of country, excellent with obviously high-environmental
Point；
3) security risk that conventional pressure boiler is easy to happen explosion is eliminated, it is easy that operator is on duty, and has saved people
The cost of member training and management, and the safety produced greatly improves；
4) both can be with manual control or with Automatic Control, flexible operation, high degree of automation may be implemented seldom to be worth
Class's personnel's operation and long-range monitoring, improve production efficiency and realize automation for production management, intelligent.
Detailed description of the invention
Fig. 1 is the front cross-sectional structural schematic diagram of the utility model.
Fig. 2 is the cross-sectional cut-away structural representation of the utility model.
Fig. 3 is the longitudinal section 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 utility model.
Fig. 5 is the side structure schematic view of the smoke discharge tube side of the utility model.
Specific embodiment
The utility model is illustrated with reference to the accompanying drawings and examples: embodiment 1: referring to attached drawing, a kind of dish flame
Low nitrogen 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
Import and the gas inlet for recycling sharp flue gas, fuel gas inlet are connected to gas valve, and air intlet is connected to air-blaster 5, cigarette
Gas import is connected to smoke induced draught fan 4；And it is equipped with the combustion air mixing chamber 7 that air and flue gas mix, in the burner of burner
The inside is equipped with the spinning disk for mixing combustion gas and combustion air and forming swirling eddy；It is set before the burner of casing inner burner
Combuster 16, surrounding is disposed with the water-cooling wall 14 that the water pipe being vertically arranged is constituted in the combustion chamber, is equipped with and combustion in casing
Burn room in close proximity to circulation water row tube, the tubulation be vertical closely spaced array or steel pipe 15 arranged in a crossed manner；On tubulation top
Upper space 9 is equipped in casing, the water-cooling wall, tubulation and upper space and lower part water tank are each filled with interconnected circulation
Water constitutes 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
The inlet and outlet 8 of outer supplying hot water is connected to, which is connected to heating system；In the relative combustion room of the tubulation
The other side be equipped with smoke discharge pipe 13, the smoke discharge pipe be equipped with flue gas recirculation using outlet, the flue gas recirculation using outlet with
The gas inlet of the 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 it is equipped with control safety pressure
The flush type of power dissolves bolt 11；The explosion proof door 2 with combustion chamber is equipped 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 flue gas purification device；The upper space is equipped with row
Air valve, the bottom of shell below tubulation is equipped with discharge outlet prevents tube wall from corroding ponding is discharged.
The operation method of the low nitrogen negative pressure Hot water units of the dish-shaped flame of above-mentioned the present embodiment, using following steps:
1) in circulation disposably perfusion softening recirculated water or cry heat medium water to set liquid level: tubulation it is suitable for reading；
2) gas valve, air blower and fuel gas inlet, air intlet are opened, exhaust 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) hot-water heating system circulating pump outside starting pipe heat exchanger, circulates outer supplying hot water, heating agent water vapour
It is condensed in Tube Sheet of Heat Exchanger outer surface, the cold water in heat exchanger tube is heated to be after hot water by steam is delivered to user, the heating agent after condensation
Water forms water droplet and falls, and heat medium water is heated vaporization again, and the recirculated water in circulation starts the cycle over operation.
4) when the pressure that the pressure gauge of upper space indicates is more than setting value, the air extractor of upper space is opened, and
Upper space is set to keep setting negative pressure value, which is -30kPa,；
5) then increase burner load, while opening air-introduced machine and gas inlet, make partial fume and combustion air by
1:3 ratio forms centrifugal rotation air-flow by spinning disk after mixing in mixed smoke box and enters burner hearth, forms 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 in the combustion chamber equipped with chamber temperature
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；Nox concentration sensor is intratracheally equipped in smoke evacuation；And be 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 blower 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 be equipped with alarm signal generator and carry out control connection with PLC controller,
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 controls alarm signal generator and issues alarm signal；In addition also
Control connection is carried out equipped with wireless remote sender unit and PLC controller, control mode is: when alarm signal occurs,
PLC controller control wireless remote sender unit sends alarm signal to remote monitor and the unit maintenance personnel of setting
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: it is lower than 30mg/m3；
2) in circulation disposably perfusion softening recirculated water or cry heat medium water to set liquid level: tubulation it is suitable for reading；
3) gas valve, air blower and fuel gas inlet, air intlet are opened, exhaust 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) hot-water heating system circulating pump outside starting pipe heat exchanger, circulates outer supplying hot water, heating agent water vapour
It is condensed in Tube Sheet of Heat Exchanger outer surface, the cold water in heat exchanger tube is heated to be after hot water by steam is delivered to user, the heating agent after condensation
Water forms water droplet and falls, and heat medium water is heated vaporization again, and the recirculated water in circulation starts the cycle over operation.
5) when the pressure that the pressure gauge of upper space indicates is more than setting value, the air extractor of upper space is opened, and
Upper space is set to keep setting negative pressure value, which is -30kPa；
6) then increase burner load, while opening air-introduced machine and gas inlet, make partial fume and combustion air by
1:3 ratio forms centrifugal rotation air-flow by spinning disk after mixing in mixed smoke box and enters burner hearth, forms 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) shut down: the present embodiment operates normally to shut down after a week: closing PLC controller run switch, closing gas valve, drum
Blower 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: energy-saving effect compared with conventional hot water boiler: averagely economize on electricity 30%,
Save artificial: embodiment 1 is 20%, and embodiment 2 is 80%；It discharges environment protecting: being lower 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 efficiently, and realizes remote
Range monitoring.
It is noted that a variety of changes and improvements can also be made on the basis of the utility model basic scheme, but these
The technical solution of similar changes and improvements also should belong to the protection scope of the utility model patent.
Claims (3)
1. a kind of low nitrogen negative pressure Hot water units of dish flame, are equipped with casing (1), it is characterized in that: being 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 and gas valve connect
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 mixes combustion gas and combustion air 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 column is constituted, be equipped in casing and combustion chamber in close proximity to circulation water row tube, which is perpendicular
Straight closely spaced array or steel pipe arranged in a crossed manner (15)；Upper space (9) are equipped in the casing on tubulation top, 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；Smoke discharge pipe (13) are equipped 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 the flush type for being equipped with control safe pressure dissolves bolt (11)；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 flue gas purification device；The upper space is equipped with exhaust valve, and the bottom of shell below tubulation is equipped with discharge outlet, uses
Ponding is discharged, prevent tube wall from corroding.
3. Hot water units according to claim 2, it is characterized in that: being equipped with circulating water temperature in the circulation water circulation system
Sensor and cyclic hydrostatic pressure force snesor；Chamber temperature sensor and combustion chamber pressure sensor are equipped 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 it is equipped with PLC controller and the circulating water temperature sensor and cyclic hydrostatic pressure force snesor, combustion
The self_clocking converter of burning room temperature sensor and combustion chamber pressure sensor, gas valve and air-blaster and smoke induced draught fan,
Nox concentration sensor carries out signal and control connection；And it is equipped with alarm signal generator and is controlled with PLC controller
Connection, is further provided with wireless remote sender unit and PLC controller carries out control connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821051393.9U CN208536378U (en) | 2018-07-04 | 2018-07-04 | The low nitrogen negative pressure Hot water units of dish-shaped flame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821051393.9U CN208536378U (en) | 2018-07-04 | 2018-07-04 | The low nitrogen negative pressure Hot water units of dish-shaped flame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208536378U true CN208536378U (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821051393.9U Active CN208536378U (en) | 2018-07-04 | 2018-07-04 | The low nitrogen negative pressure Hot water units of dish-shaped flame |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731268A (en) * | 2018-07-04 | 2018-11-02 | 王研 | The low nitrogen negative pressure Hot water units of dish-shaped flame and its operation method |
-
2018
- 2018-07-04 CN CN201821051393.9U patent/CN208536378U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731268A (en) * | 2018-07-04 | 2018-11-02 | 王研 | The low nitrogen negative pressure Hot water units of dish-shaped flame and its operation method |
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