CN206235022U - Gas-fired condensing boiler and its heat-exchanger rig - Google Patents
Gas-fired condensing boiler and its heat-exchanger rig Download PDFInfo
- Publication number
- CN206235022U CN206235022U CN201620763695.3U CN201620763695U CN206235022U CN 206235022 U CN206235022 U CN 206235022U CN 201620763695 U CN201620763695 U CN 201620763695U CN 206235022 U CN206235022 U CN 206235022U
- Authority
- CN
- China
- Prior art keywords
- heat
- exchanger rig
- gas
- condensing boiler
- fired condensing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model embodiment provides a kind of gas-fired condensing boiler and its heat-exchanger rig.Wherein, heat-exchanger rig is used for gas-fired condensing boiler, and flue gas and the backwater of the heating system directly contact in heat-exchanger rig that gas-fired condensing boiler is produced carry out heat exchange.The gas-fired condensing boiler and its heat-exchanger rig that the utility model embodiment is provided are energy-efficient, safe and reliable.
Description
Technical field
The utility model is related to boiler technology field, more particularly to a kind of gas-fired condensing boiler and its heat-exchanger rig.
Background technology
Condensation gas boiler, is by condensing the water vapour in flue gas so that the latent heat of vaporization therein is recycled,
So as to improve the boiler of the thermal efficiency.Condensing boiler it is critical only that condensation technology, be a kind of novel energy-conserving, the technology of environmental protection.It
Principle and uncomplicated, it is simple that to summarize be exactly by flue gas condensing, the heat energy in recovered flue gas, so as to reach raising boiler
The purpose of efficiency.
In conventional gas boiler, exhaust gas temperature is typically in 120~180 DEG C, even more high so that fuel (such as natural gas:
CH4+2O2 → CO2+2H2O) burning when the water that produces, be the water vapour in superheat state in flue gas, with flue gas from chimney
Middle loss.The conventional boiler thermal efficiency typically can only achieve 85%~91%.And condensation gas boiler, it is reduced to exhaust gas temperature
Below 58 DEG C of condensation temperatures, the gasification latent heat of the sensible heat and water vapour in flue gas is fully reclaimed, the thermal efficiency reaches as high as 106%
(being calculated by Lower heat value).
Conventional gas boiler energy-saving effect is poor, and floor space is big, and programming rate is slow:Traditional condensing boiler is changed using tubular type
Hot device, heat transfer coefficient is small, and heat transfer effect is poor, when boiler controller system starts programming rate it is slow, it is necessary to time it is long.And to obtain
Condensation effect, only increases heat exchange area, and floor space is very big.
Conventional gas boiler service life is short, there is potential safety hazard:Traditional condensing boiler uses pipe heat exchanger, condensed water
Condense on tube wall, it may occur that low-temperature corrosion, trommel causes leakage, and not only boiler service life is short, and influence boiler
Safe and stable operation.
Utility model content
The utility model provides a kind of gas-fired condensing boiler and its heat-exchanger rig, can solve the problem that boiler not ring in the prior art
Protect energy-conservation, the problem of short life.
In order to solve the above technical problems, the technical scheme that the utility model is used is:A kind of heat-exchanger rig is provided, is changed
Thermal is used for gas-fired condensing boiler, and the flue gas that gas-fired condensing boiler is produced is direct in heat-exchanger rig with the backwater of heating system
Contact carries out heat exchange.
Wherein, gas-fired condensing boiler includes cylinder, and in cylinder, heat-exchanger rig is water spraying tray, water spraying tray to heat-exchanger rig
With multiple holes, backwater passes through multiple holes and carries out heat exchange with flue gas.
Wherein, water spraying tray is multiple, and in the vertical direction interval setting.
Wherein, the one of one end of adjacent water spraying tray is connected with the left wall of heat-exchanger rig, the other end and heat-exchanger rig
Right wall is not connected to;Another one end of adjacent water spraying tray is not connected to the left wall of heat-exchanger rig, the right side of the other end and heat-exchanger rig
Wall is connected.
In order to solve the above technical problems, another technical scheme that the utility model is used is:A kind of combustion gas condensation is provided
Boiler, gas-fired condensing boiler includes such as preceding heat-exchanger rig.
Wherein, gas-fired condensing boiler includes cylinder, and in cylinder, heat-exchanger rig top is provided with backwater water to heat-exchanger rig
Case, the right-hand member of cylinder is provided with inlet of cold air, and left end is provided with hot air outlet, and the upper end of cylinder is provided with backwater import, backwater water
Heat exchanger is provided with case, the backwater from heating system enters and logical with the cold air entered from inlet of cold air from backwater import
Crossing heat exchanger carries out heat exchange, hot-air is changed into after cold air heat exchange and is flowed out from hot air outlet.
Wherein, heat exchanger includes the rounded base tube in a section, and the outer surface of base tube forms the fin that multi-turn is placed equidistant,
The inner surface of base tube forms the screw thread or fin that multi-turn is placed equidistant, and the fin and screw thread that base tube, base tube outer surface are formed are adopted
It is integrally formed with material of the same race.
Wherein, gas-fired condensing boiler also includes burner, and hot-air enters burner and participates in burning by hot-flow flue.
Wherein, gas-fired condensing boiler also includes corrugated internal furnace combustion chamber, and corrugated internal furnace combustion chamber is located at inner barrel, air
Combustion chamber is entered by burner and participates in burning, the flue gas produced after the burning water outdoor with burning is coated on carries out heat exchange.
Wherein, gas-fired condensing boiler also includes reversal chamber, and the flue gas produced after burning is by passing through reversal chamber after heat exchange
Into heat-exchanger rig.
The gas-fired condensing boiler and its heat-exchanger rig that the utility model embodiment is provided are produced by by gas-fired condensing boiler
The backwater directly contact of flue gas and heating system carry out heat exchange, gas-fired condensing boiler that the utility model embodiment is provided and
Its heat-exchanger rig is energy-efficient, safe and reliable.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the utility model embodiment, below will be to needed for embodiment description
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Other accompanying drawings are obtained, wherein:
Fig. 1 is the cross-section structure simplified schematic diagram of the embodiment of the utility model gas-fired condensing boiler one;
Fig. 2 is the structural representation of the heat-exchanger rig of the gas-fired condensing boiler shown in Fig. 1;
Fig. 3 is the structural representation of the heat exchanger of the gas-fired condensing boiler shown in Fig. 1.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Fig. 1 is referred to, Fig. 1 is the cross-section structure simplified schematic diagram of the embodiment of the utility model gas-fired condensing boiler one.This reality
Include burner 21, cylinder 22, corrugated internal furnace combustion chamber 23, reversal chamber 24, heat exchange with the gas-fired condensing boiler of new embodiment
Device 25, return water tank 26, inlet of cold air 27, hot air outlet 28, heat exchanger 29, chimney 30, water supply tank 31, outlet pipe
32。
Burner 21 is used for fuel combustion, and the burner of the present embodiment uses Metal Fibre Combustion formula burner 21,
It is that, using specialty metal fiber as burning surface, combustion intensity can reach 2500kw/ ㎡, and flame is short, only conventional diffusion formula
/ 3rd of flame.So, combustion chamber is many with regard to relative decrease, and boiler overall dimensions reduce.Corrugated internal furnace combustion chamber 23 is whole
In cylinder, the outer wall of cylinder 22 uses insulation outer casing to body, for keeping the temperature in boiler.The energy of corrugated internal furnace combustion chamber 23
Heat transfer enough in reinforcing burner hearth.
Incorporated by reference to reference picture 2, Fig. 2 is the structure diagram of the gas-fired condensing boiler shown in Fig. 1.Heat exchange dress is provided with cylinder 22
25 are put, the top of heat-exchanger rig 25 is provided with water inlet 251 and outlet flue 252, bottom is provided with delivery port 253 and smoke inlet 254,
In the present embodiment, the water that water inlet 251 is come in is the backwater from after the heat exchange of return water tank 26, and the water of the outflow of delivery port 253 enters
Enter the bottom of cylinder 22, the cigarette that smoke inlet 254 is come in is the flue gas entered from reversal chamber 24, and the cigarette of the outflow of outlet flue 252 is to carry out
Cooled flue gas after heat exchange.The inwall of heat-exchanger rig 25 is provided with water spraying tray 255, and water spraying tray 255 has multiple holes, and backwater is passed through
Multiple holes carry out heat exchange with flue gas.In the present embodiment, water spraying tray 255 is multiple, and in the vertical direction interval setting.Phase
Adjacent one of one end of water spraying tray 255 is connected with the left wall of heat-exchanger rig 25, and the other end does not connect with the right wall of heat-exchanger rig 25
Connect;Another one end of adjacent water spraying tray is not connected to the left wall of heat-exchanger rig 25, and the other end connects with the right wall of heat-exchanger rig 25
Connect.Residence time of the flue gas in cylinder 22 can be extended by above-mentioned setting, allow flue gas fully to participate in heat exchange.In this implementation
In example, water spraying tray 255 is sieve-like stephanoporate steel plate, and backwater is dispersed into the tiny current of multiply by multiple holes, current be in the form of a column or
Drops, will not be taken away by flue gas, and heat exchange effect is good.
The top of heat-exchanger rig 25 is provided with return water tank 26, and the right-hand member of cylinder 22 is provided with inlet of cold air 27, and left end is provided with heat
Air outlet slit 28, the upper end of cylinder 22 is provided with backwater import, return water tank 26 and is provided with heat exchanger 29, returning from heating system
Water enters from backwater import and carries out heat exchange, cold air heat by heat exchanger 29 with the cold air entered from inlet of cold air 27
It is changed into hot-air after exchange to be flowed out from hot air outlet 28.
Fig. 3 is please referred to, Fig. 3 is the structural representation of the heat exchanger of the gas-fired condensing boiler shown in Fig. 1.This practicality is new
The heat exchanger 29 of type embodiment includes base tube 1, and the section of the base tube 1 is rounded, and the outer surface of base tube 1 forms multi-turn and is placed equidistant
Fin 2, fin 2 can be twist placed equidistant in the outer surface of base tube 1, or H-shaped fin is placed equidistant in base tube 1
Outer surface, those skilled in the art can be set as the case may be, it is preferable that the height of the fin 2 that the outer surface of base tube 1 is formed
It is 5-8mm.The inner surface of base tube 1 is formed with screw thread 3 or the fin (not shown) that multi-turn is placed equidistant, base tube 1, base tube 1 it is outer
The fin 2 and screw thread 3 that surface is formed are integrally formed using material of the same race.
Heat exchanger of the present utility model has advantages below:
1. small volume, lightweight, is easily installed.Traditional heat exchanger volume is huge, is meeting the operating mode of identical thermic load
When, internal thread external finned tube heat exchanger volume only has 1/10 or so of traditional shell-and-tube heat exchanger again, and floor space is small, saves empty
Between;Simultaneously also because small volume, lightweight, easily facilitate installations, dismantle.
2. fouling is few, easy to maintenance.Fouling of heat exchangers can directly reduce heat transfer effect, not reach technological requirement, influence life
Efficiency is produced, increases maintenance cost, therefore it is internal thread external finned tube formula design of heat exchanger key factor to reduce fouling tendency as far as possible.
Internal thread external finned tube is the depth of the pitch and screw thread that heat exchanger tube helix is designed according to the different quantity of circulating water of user, is rolled
System spiral heat exchange tube part, using fluid in special spiral grooved tube with certain flow rate rotational flow, reach turbulence state,
The flow velocity of near-wall increases, transversal flow tube wall, incrustation scale is adhered to less than on tube wall;The second is the heat exchanger tube is to use special work
The heat exchange element that skill makes, per se with the ability expanded with heat and contract with cold, shrinks and expansion energy plays self-cleaning effect;The third is this is changed
Heat pipe, due to passing through in special helix tube, can produce fixed range dither in normal operation, make the impurity in medium
In suspended state, this be also make tube wall will not incrustation key factor.
3. heatproof, pressure-resistant, long lifespan.The heat-exchanging tube bundle and tube sheet of internal thread external finned tube heat exchanger use phase same material,
With the unified coefficient of expansion, the deformation of heat exchanger will not be caused due to pressure, temperature variation.Heat exchanger need not be installed additional and subtracted
Temperature, decompressor, 400 DEG C of highest heatproof, pressure-resistant 5.3MPa.
4. energy-efficient.Internal thread external finned tube heat exchanger significantly increases exchange capability of heat, especially because of the design of its uniqueness
When there is the heat-exchanging state of phase transformation, more there is significant advantage compared with traditional heat exchangers.Under the operating mode that carbonated drink exchanges such as steam heating water,
Conventional shell-and-tube heat exchanger coefficient of heat transfer k values are typically up to 6000W/ (m2DEG C), internal thread external finned tube heat exchanger its
Coefficient of heat transfer k values may be up to 14000W/ (m2·℃)。
What deserves to be explained is, the gas-fired condensing boiler of the utility model embodiment also includes water supply tank 31, and water supply tank 31 is used
When the water in cylinder 22 lacks, to moisturizing in cylinder 22.
The structure of the gas-fired condensing boiler of the utility model embodiment is described above, below in conjunction with the accompanying drawings 1-3 explanations combustion
The course of work of gas condensing boiler.
Combustion air enters return water tank 26 by inlet of cold air 27, is entered by heat exchanger 29 in return water tank 26
Row heat exchange causes that return water temperature reduction, cold air heating become hot-air, and hot-air enters burner 21 and participates in combustion by hot-flow flue
Burn.Natural gas enters and burner 21 and is fully burnt in corrugated internal furnace combustion chamber 23, the high-temperature flue gas of generation be immersed in water
In corrugated internal furnace combustion chamber 23 exchanged heat, the flue gas after heat exchange by reversal chamber 24 enter heat-exchanger rig 25, heat-exchanger rig
25 receive the backwater from after the heat exchange of return water tank 26 and carry out heat exchange with flue gas directly contact, after heat exchange, cooled flue gas,
Heating backwater, flue gas enters air by chimney 30.Heated backwater flows into the bottom of cylinder 22, is burnt by corrugated internal furnace
Room 23 is heated, and is extracted out by water circulating pump by outlet pipe 32 after being finally reached preset temperature, participates in heating system heat supply.
The gas-fired condensing boiler of the utility model embodiment has advantages below:
1. because by the way of air water direct heat transfer, simplifying boiler structure, heat exchange area is reduced, boiler takes up an area face
Product is small, and consuming steel are few, low cost of manufacture.
2. flue gas and water is in direct heat transfer, the water recovery in flue gas into condensed water be blended in water, play back
The effect of condensed water is received, this is to the regional particularly important of the droughts such as Xinjiang.
3. flue gas and water is in direct heat transfer, the solubility reduction of oxygen when water heats up, and serves the effect of deoxygenation, system without
Oxygen-eliminating device is needed, the oxygen corrosion of heating surface is reduced, the service life of boiler is extended.
4. corrugated internal furnace, the heat transfer in reinforcing burner hearth are used.
5. Metal Fibre Combustion formula burner is used, combustion chamber volume is reduced.
6. water drenching disc type heat-exchanger rig is used, and backwater passes through gravity fall, without any energy, power and energy saving.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (3)
1. a kind of heat-exchanger rig, it is characterised in that the heat-exchanger rig is used for gas-fired condensing boiler, the gas-fired condensing boiler is produced
Raw flue gas and the backwater of the heating system directly contact in the heat-exchanger rig carry out heat exchange;
The gas-fired condensing boiler includes cylinder, and in the cylinder, the inwall of the heat-exchanger rig sets the heat-exchanger rig
There is water spraying tray, the water spraying tray has multiple holes, and the backwater passes through flue gas described in the multiple Kong Houyu and carries out directly heat friendship
Change.
2. heat-exchanger rig according to claim 1, it is characterised in that the water spraying tray is multiple, and in the vertical direction
Interval setting.
3. heat-exchanger rig according to claim 2, it is characterised in that adjacent one of one end of the water spraying tray and institute
The left wall connection of heat-exchanger rig is stated, the other end is not connected to the right wall of the heat-exchanger rig;The adjacent water spraying tray another
One end is not connected to the left wall of the heat-exchanger rig, and the other end is connected with the right wall of the heat-exchanger rig.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201620763695.3U CN206235022U (en) | 2016-07-19 | 2016-07-19 | Gas-fired condensing boiler and its heat-exchanger rig |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201620763695.3U CN206235022U (en) | 2016-07-19 | 2016-07-19 | Gas-fired condensing boiler and its heat-exchanger rig |
Publications (1)
Publication Number | Publication Date |
---|---|
CN206235022U true CN206235022U (en) | 2017-06-09 |
Family
ID=58986383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201620763695.3U Expired - Fee Related CN206235022U (en) | 2016-07-19 | 2016-07-19 | Gas-fired condensing boiler and its heat-exchanger rig |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN206235022U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106091382A (en) * | 2016-07-19 | 2016-11-09 | 北京华林联合热能技术有限公司 | Gas-fired condensing boiler and heat-exchanger rig thereof |
-
2016
- 2016-07-19 CN CN201620763695.3U patent/CN206235022U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106091382A (en) * | 2016-07-19 | 2016-11-09 | 北京华林联合热能技术有限公司 | Gas-fired condensing boiler and heat-exchanger rig thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106091382A (en) | Gas-fired condensing boiler and heat-exchanger rig thereof | |
CN101490481B (en) | Storage type boiler heat exchanging structure for preventing condensation | |
CN205690425U (en) | A kind of residual heat from boiler fume Multi-class propagation combines condensation water heating supply air system | |
CN203771380U (en) | Condensation waste heat recovery steam boiler | |
CN104279754B (en) | Natural gas heat conducting oil boiler waste heat comprehensive utilization system | |
CN206235022U (en) | Gas-fired condensing boiler and its heat-exchanger rig | |
CN201242266Y (en) | Tube type heating stove | |
CN100520268C (en) | Fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant | |
CN204678365U (en) | Spiral stream guidance hangs courage formula waste-heat recoverer | |
CN206235023U (en) | Gas-fired condensing boiler | |
CN105066437B (en) | The complete wet back of the body central flame flame boiler of integral type | |
CN202792500U (en) | Heat pipe type gas atmospheric water heating boiler | |
CN106066092A (en) | Gas-fired condensing boiler | |
CN104949335A (en) | Efficient horizontal type condensational fuel industrial boiler | |
CN205878604U (en) | Split type thermal medium heater | |
CN100559074C (en) | Supercritical pressure steam pouring furnace | |
CN208443047U (en) | Low nitrogen condenses stainless steel hot homogeneous solution-type reactor | |
CN106051736A (en) | Condensed steam boiler | |
CN206037002U (en) | Condensation steam boiler | |
CN207019287U (en) | A kind of raw oil heater | |
CN102628612B (en) | Two-liner type two-temperature hot water boiler | |
CN203744212U (en) | Small-capacity supercritical pressure fuel gas once-through boiler | |
CN104789272B (en) | A kind of novel water cooling wall for coal gasifier | |
CN203784909U (en) | Movable oil field steam generator with spiral square membrane type wall | |
CN201050773Y (en) | Supercritical pressure steam injection boiler |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20190719 |