CN109869901B - Natural gas direct heating type water heater - Google Patents
Natural gas direct heating type water heater Download PDFInfo
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- CN109869901B CN109869901B CN201711285439.3A CN201711285439A CN109869901B CN 109869901 B CN109869901 B CN 109869901B CN 201711285439 A CN201711285439 A CN 201711285439A CN 109869901 B CN109869901 B CN 109869901B
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- water
- heat exchange
- natural gas
- plate
- exchange device
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 107
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000003345 natural gas Substances 0.000 title claims abstract description 26
- 238000010438 heat treatment Methods 0.000 title claims abstract description 21
- 238000005507 spraying Methods 0.000 claims abstract description 16
- 239000003365 glass fiber Substances 0.000 claims abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004744 fabric Substances 0.000 claims abstract description 13
- 239000003546 flue gas Substances 0.000 claims abstract description 13
- 239000002737 fuel gas Substances 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 5
- 239000008236 heating water Substances 0.000 claims description 6
- 239000000779 smoke Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Abstract
The invention relates to a natural gas direct heating type water heater, which structurally comprises: the device comprises an air inlet, a natural gas inlet, a blower, a plate-type burner, a hearth, an automatic igniter, a water supply pipe, a water supply tank, a heat exchange device, a water outlet tank, a water outlet pipe and a chimney; combustion air enters through an air inlet, is mixed with natural gas entering through a natural gas inlet to form fuel gas, is pressurized by a blower and flows horizontally to an upright plate-type combustor, the fuel gas is ignited by an automatic igniter at the other side of the plate-type combustor, is combusted in a hearth, and generated high-temperature flue gas horizontally flows through a heat exchange device for heat exchange and is discharged from a chimney; the heating backwater enters the water supply tank through the water supply pipe, and then flows out through the water outlet tank and the water outlet pipe after being heated by the high-temperature flue gas through the heat exchange device. The heat exchange device consists of a water spraying plate, a water collecting rod and a glass fiber cloth curtain.
Description
Technical Field
The invention relates to a boiler technology, in particular to a natural gas direct heating type water heater.
Background
The gas hot water boiler is widely applied in production and life.
The gas hot water boiler can not only independently supply heat but also independently supply hot water, and if an upper heat exchanger is added in a pipeline system, the boiler can simultaneously meet two requirements of heating and bathing.
The gas hot water boiler has the remarkable characteristics of environmental protection, energy saving, safety and full automatic operation, is very convenient to use, and is increasingly favored because of the encouragement of operation economy and government policies.
The structure of the horizontal gas water heating boiler used in a large amount is usually a shell type three-return and full wet back structure.
All the compression elements are symmetrical with the center of the boiler barrel, and the boiler adopts a full wet back type structure, so that the structure of the large inner barrel and the eccentric fire box is beneficial to expanding enough radiation heating surfaces.
The convection heating surface is composed of a second return and a three-return tube bundle. The front tube plate of the back-burning chamber is connected with the furnace pipe, and the rear tube plate of the back-burning chamber is an ellipsoidal head and a tube plate. The second return and third return turning smoke chambers form a front smoke box, and the smoke temperature of the smoke outlet is lower than 500 ℃. Therefore, the structure of the front smoke box adopts a light-structure fireproof heat-insulating material.
The flue gas outlet of the rear flue box is arranged in the direction along the longitudinal axis of the cylinder body, so that the length of the furnace body can be shortened; and the chimney can be prevented from being placed in the direction vertical to the longitudinal axis of the cylinder, and condensed water corrodes the boiler body when the boiler is started and stopped.
The design of the boiler mainly considers the principle of overhauling and stabilizing the boiler. The water mixing device is arranged in the return water inlet of the boiler, and the return water firstly washes the smoke tube bundle and contacts the boiler furnace, so that the water temperature of the return water contacting the boiler furnace is improved, and the phenomenon of supercooling boiling is avoided locally.
When the boiler water contains hardness salts such as calcium and magnesium ions, scale is generated on the heating surface of the boiler, so that the heat efficiency of the boiler is reduced, the fuel consumption is increased, and even the parts are damaged due to local overheating, and explosion is caused. Therefore, water softening or desalting treatment is performed.
In the industrial boiler operated in China, the failure rate of the boiler is up to 25% due to the water quality problem. The traditional softened water treatment equipment is complex in operation, poor in working reliability and high in failure rate, and the equipment is in an abnormal working state for a long time, so that water quality is not guaranteed, and the failure rate of the boiler is high.
Therefore, the gas hot water boiler has a complex furnace structure, high manufacturing cost and easy accident occurrence. The water quality is high, if the water quality can not meet the requirement, the service life of the boiler is shortened.
Disclosure of Invention
The invention provides a natural gas direct heating type water heater, which uses natural gas as fuel to produce hot water, and has simple furnace body structure and low requirement on water quality.
A natural gas direct heating type water heater has the structure that: the device comprises an air inlet, a natural gas inlet, a blower, a plate-type burner, a hearth, an automatic igniter, a water supply pipe, a water supply tank, a heat exchange device, a water outlet tank, a water outlet pipe and a chimney;
combustion air enters through an air inlet, is mixed with natural gas entering through a natural gas inlet to form fuel gas, is pressurized by a blower and flows horizontally to an upright plate-type combustor, the fuel gas is ignited by an automatic igniter at the other side of the plate-type combustor, is combusted in a hearth, and generated high-temperature flue gas horizontally flows through a heat exchange device for heat exchange and is discharged from a chimney;
the heating backwater enters the water supply tank through the water supply pipe, and then flows out through the water outlet tank and the water outlet pipe after being heated by the high-temperature flue gas through the heat exchange device.
The heat exchange device consists of a water spraying plate, a water collecting rod and a glass fiber cloth curtain.
The water spraying plate is a flat plate, a plurality of water spraying holes are uniformly arranged on the water spraying plate, and the water spraying plate is horizontally arranged on the upper part of the heat exchange device.
The water collecting rods are horizontally arranged below the water spraying plate in rows, the axial direction of the water collecting rods is parallel to the flow direction of the flue gas, the diameter of the water collecting rods is 2 cm, and the distance between the water collecting rods is 2 cm.
The number of the glass fiber cloth curtains is the same as that of the water collecting rods, each glass fiber cloth curtain is hung below one water collecting rod, heating water collected by the water collecting rod flows downwards along the glass fiber cloth curtain, and the surface of the glass fiber cloth curtain is parallel to the flue gas flow direction.
Drawings
FIG. 1 is a general view of an embodiment of a natural gas direct heating water heater of the present invention.
FIG. 2 is a cross-sectional view of the furnace body of an embodiment of the natural gas direct heating type water heater of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
FIG. 1 shows an overall view of an embodiment of a natural gas direct heating water heater of the present invention, which comprises: air inlet 10, natural gas inlet 11, blower 12, plate burner 20, furnace 21, auto-igniter 22, water supply tank 30, shower plate 31, water supply pipe 32, heat exchange plate 33, water outlet tank 35, water outlet pipe 34, and chimney 40.
The embodiment of the natural gas direct heating type water heater has the following operation processes of
Combustion air enters through the air inlet 10, is mixed with natural gas entering through the natural gas inlet 11 to form fuel gas, is pressurized by the blower 12 and flows to the plate-type burner 20, the plate-type burner 20 is arranged on the combustion surface on one side of the hearth 21, the fuel gas is ignited by the automatic igniter 22, and generated high-temperature flue gas horizontally flows through the heat exchange plate 33 and is discharged from the chimney 40.
The heating backwater enters the water supply tank 30 through the water supply pipe 32, and then passes through the shower plate 31, and the heating backwater is sprayed onto the heat exchange plate 33. After the heat exchange plate 33 is heated, the heating water flows out through the water outlet tank 35 and the water outlet pipe 34, and is heated to the outside.
FIG. 2 shows a cross-sectional view of a furnace body of an embodiment of the natural gas direct heating type water heater of the present invention, which comprises: water supply tank 30, shower plate 31, water collecting rod 36, heat exchange plate 33, water outlet tank 35.
The heating backwater passes through the water supply tank 30 and then passes through a plurality of water spraying holes on the water spraying plate 31 to spray downwards. The water collecting rods 36 are arranged under the water spraying plate 31 in a dense row, and the water sprayed by each water collecting rod 36 flows downwards to one heat exchange plate 33.
The heat exchange plate 33 is constructed by a glass fiber cloth suspended downwards from a water collecting rod 36, and flowing water with the two side surfaces downwards contacts with high-temperature flue gas for heat exchange. The lower end of the glass fiber cloth is close to the upper surface of the water outlet groove 35, the distance between two adjacent glass fiber cloths is 2 cm, and the diameter of the water collecting rod 36 is 2 cm.
Claims (2)
1. A natural gas direct heating type water heater has the structure that: the device comprises an air inlet, a natural gas inlet, a blower, a plate-type burner, a hearth, an automatic igniter, a water supply pipe, a water supply tank, a heat exchange device, a water outlet tank, a water outlet pipe and a chimney; combustion air enters through an air inlet, is mixed with natural gas entering through a natural gas inlet to form fuel gas, is pressurized by a blower and flows horizontally to an upright plate-type combustor, the fuel gas is ignited by an automatic igniter at the other side of the plate-type combustor, is combusted in a hearth, and generated high-temperature flue gas horizontally flows through a heat exchange device for heat exchange and is discharged from a chimney; heating backwater enters a water supply tank through a water supply pipe, is heated by high-temperature flue gas through a heat exchange device, and flows out through a water outlet tank and a water outlet pipe, wherein the heat exchange device consists of a water spraying plate, a water collecting rod and a glass fiber curtain cloth; the water spraying plate is a flat plate, a plurality of water spraying holes are uniformly arranged on the water spraying plate, and the water spraying plate is horizontally arranged on the upper part of the heat exchange device; the water collecting rods are horizontally arranged below the water spraying plate in rows, and the axial direction of the water collecting rods is parallel to the flow direction of the flue gas; the number of the glass fiber cloth curtains is the same as that of the water collecting rods, each glass fiber cloth curtain is hung below one water collecting rod, heating water collected by the water collecting rod flows downwards along the glass fiber cloth curtain, and the surface of the glass fiber cloth curtain is parallel to the flue gas flow direction.
2. A natural gas direct heating water heater as defined in claim 1, wherein: the diameter of the water collecting rods is 2 cm, and the distance between the water collecting rods is 2 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711285439.3A CN109869901B (en) | 2017-12-02 | 2017-12-02 | Natural gas direct heating type water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711285439.3A CN109869901B (en) | 2017-12-02 | 2017-12-02 | Natural gas direct heating type water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109869901A CN109869901A (en) | 2019-06-11 |
| CN109869901B true CN109869901B (en) | 2023-10-24 |
Family
ID=66916869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711285439.3A Active CN109869901B (en) | 2017-12-02 | 2017-12-02 | Natural gas direct heating type water heater |
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| Country | Link |
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| CN (1) | CN109869901B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3420733A1 (en) * | 1984-06-04 | 1985-12-05 | Richard 3150 Peine Vetter | DEVICE FOR HEATING WATER, ESPECIALLY HOT WATER BOILER |
| CN2056234U (en) * | 1989-10-28 | 1990-04-18 | 机械电子工业部第十设计研究院 | Airflow stabilizing device and air-water separating device for jet cooling tower |
| DE3842463A1 (en) * | 1987-09-25 | 1990-06-21 | Wetering Gemeenschappelijk Bez | Heating device (heater, radiator) |
| CN2773551Y (en) * | 2005-01-19 | 2006-04-19 | 华南理工大学 | Direct gas and water heat exchanger by low-temperature smoke heat |
| DE102007060508A1 (en) * | 2007-12-15 | 2009-06-18 | Robert Bosch Gmbh | Heat exchanger for a heater |
| CN102816434A (en) * | 2012-09-06 | 2012-12-12 | 哈尔滨工业大学 | Preparation method of glass cloth/modified organic silicon resin prepreg |
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| CN106524774A (en) * | 2016-11-28 | 2017-03-22 | 中国科学院过程工程研究所 | Flue gas cleaning and heat exchange integrated device |
| EP3168548A1 (en) * | 2015-11-10 | 2017-05-17 | Robert Bosch Gmbh | Heater appliance and method for operating a heater appliance |
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| US10473407B2 (en) * | 2014-10-22 | 2019-11-12 | Grand Mate Co., Ltd. | Water heater having secondary heat exchanger |
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| DE3420733A1 (en) * | 1984-06-04 | 1985-12-05 | Richard 3150 Peine Vetter | DEVICE FOR HEATING WATER, ESPECIALLY HOT WATER BOILER |
| DE3842463A1 (en) * | 1987-09-25 | 1990-06-21 | Wetering Gemeenschappelijk Bez | Heating device (heater, radiator) |
| CN2056234U (en) * | 1989-10-28 | 1990-04-18 | 机械电子工业部第十设计研究院 | Airflow stabilizing device and air-water separating device for jet cooling tower |
| CN2773551Y (en) * | 2005-01-19 | 2006-04-19 | 华南理工大学 | Direct gas and water heat exchanger by low-temperature smoke heat |
| DE102007060508A1 (en) * | 2007-12-15 | 2009-06-18 | Robert Bosch Gmbh | Heat exchanger for a heater |
| CN102816434A (en) * | 2012-09-06 | 2012-12-12 | 哈尔滨工业大学 | Preparation method of glass cloth/modified organic silicon resin prepreg |
| CN202942807U (en) * | 2012-12-21 | 2013-05-22 | 山东北辰机电设备股份有限公司 | Water-washing condensing-type smoke triple-recovery device |
| CN103884101A (en) * | 2012-12-24 | 2014-06-25 | 苗苏宁 | Plate-type gas combustion condensing water boiler |
| CN204007202U (en) * | 2014-07-17 | 2014-12-10 | 泸州川西化玻璃钢有限公司 | A kind of energy-efficient corrosion resistant glass fibre reinforced plastics cooling tower |
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| CN106524774A (en) * | 2016-11-28 | 2017-03-22 | 中国科学院过程工程研究所 | Flue gas cleaning and heat exchange integrated device |
| CN107042032A (en) * | 2017-03-06 | 2017-08-15 | 江苏省特种设备安全监督检验研究院南通分院 | Energy-saving graphite multitube smoke duster, its method of work and its repair method |
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| CN109869901A (en) | 2019-06-11 |
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