CN220119913U - Nested tubular heat exchanger - Google Patents
Nested tubular heat exchanger Download PDFInfo
- Publication number
- CN220119913U CN220119913U CN202321529054.8U CN202321529054U CN220119913U CN 220119913 U CN220119913 U CN 220119913U CN 202321529054 U CN202321529054 U CN 202321529054U CN 220119913 U CN220119913 U CN 220119913U
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- CN
- China
- Prior art keywords
- heat exchange
- water inlet
- collecting cavity
- water
- cavity
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 239000000779 smoke Substances 0.000 claims abstract description 8
- 238000004880 explosion Methods 0.000 abstract description 5
- 239000002956 ash Substances 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 5
- 239000002028 Biomass Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 125000000969 xylosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)CO1)* 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a nested tube type heat exchanger, which belongs to the field of heat exchangers and comprises a heat exchange cavity, wherein a smoke inlet and a smoke outlet are respectively arranged at two sides of the heat exchange cavity, a water outlet collecting cavity is arranged at the top of the heat exchange cavity, a plurality of heat exchange tubes are arranged at the bottom of the water outlet collecting cavity, and the heat exchange tubes are communicated with the water outlet collecting cavity; the water inlet collecting cavity is arranged above the water outlet collecting cavity, a plurality of water inlet guide pipes are arranged at the bottom of the water inlet collecting cavity, the diameter of each water inlet guide pipe is smaller than that of the heat exchange pipe, a plurality of water inlet guide pipes penetrate through the water outlet collecting cavity and correspondingly extend into the heat exchange pipe, and the bottom of each water inlet guide pipe is communicated with the heat exchange pipe. The utility model can improve the heat exchange efficiency, ensure the water quantity in the heat exchange tube and avoid water shortage and tube explosion through the structure.
Description
Technical Field
The utility model relates to the field of heat exchangers, in particular to a nested tube type heat exchanger.
Background
The biomass hot water boiler takes solid biomass fuel produced by a wood chip granulator or a straw briquetting machine as a main combustion object, and the biomass solid fuel has very wide production raw material sources, including corn, wheat, bean stems, bagasse, wood chips, xylose residues and the like. Therefore, when the fuel of the biomass fuel boiler is combusted, fly ash is large, and as the common flue gas heat exchanger of the boiler mostly adopts a conventional tube array heat exchanger, the problem of easy ash accumulation exists, the heat exchange efficiency can be reduced to more than 50% along with the use, and the problem of easy tube explosion due to water shortage of a heat tube exists.
In view of the above problems with the prior art, the present utility model is directed to a nested tube heat exchanger that overcomes the above drawbacks.
Disclosure of Invention
For the problems existing in the prior art, the nested tube type heat exchanger provided by the utility model can improve the heat exchange efficiency, ensure the water quantity in the heat exchange tube and avoid water shortage and tube explosion.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the nested tube type heat exchanger comprises a heat exchange cavity, wherein a smoke inlet and a smoke outlet are respectively arranged on two sides of the heat exchange cavity, a water outlet collecting cavity is arranged at the top of the heat exchange cavity, a plurality of heat exchange tubes are arranged at the bottom of the water outlet collecting cavity, and the heat exchange tubes are communicated with the water outlet collecting cavity;
the water inlet collecting cavity is arranged above the water outlet collecting cavity, a plurality of water inlet guide pipes are arranged at the bottom of the water inlet collecting cavity, the diameter of each water inlet guide pipe is smaller than that of the heat exchange pipe, a plurality of water inlet guide pipes penetrate through the water outlet collecting cavity and correspondingly extend into the heat exchange pipe, and the bottom of each water inlet guide pipe is communicated with the heat exchange pipe.
Preferably, a water inlet pipe is arranged above one side of the water inlet collecting cavity, and a water outlet pipe is arranged on one side of the water outlet collecting cavity.
Preferably, the bottom of the heat exchange cavity is provided with an ash falling hopper.
Preferably, a space is arranged between the end part of the water inlet conduit and the heat exchange tube.
Preferably, a supporting structure is arranged at the bottom of the heat exchange tube.
The utility model has the advantages that:
1. according to the utility model, the heat exchange pipes are vertically suspended and distributed, so that dust in the flue gas is ensured to directly fall into the ash accumulation hopper after being collided with the heat exchange pipes, and the heat exchange pipes are free from ash accumulation; in addition, the water inlet guide pipe and the heat exchange pipe are nested, and the water inlet guide pipe directly guides cold water to the bottom of the heat exchange pipe to exchange heat with flue gas, so that the heat exchange efficiency is improved at two points.
2. According to the utility model, the cooling water is input through the water inlet collecting cavity at the top, so that whether the heat exchange tube is deficient or not is judged by judging whether the water inlet collecting cavity is full of water, and the problem of water deficiency and tube explosion of the heat exchanger is solved.
Drawings
Fig. 1 is a schematic view of a nested tube heat exchanger.
In the figure: 1-smoke inlet, 2-smoke outlet, 3-water inlet pipe, 4-water outlet pipe, 5-water inlet collecting cavity, 6-water outlet collecting cavity, 7-heat exchange pipe, 8-water inlet conduit and 9-ash falling hopper.
Detailed Description
The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
As shown in fig. 1, the nested tubular heat exchanger comprises a heat exchange cavity, wherein two sides of the heat exchange cavity are respectively provided with a flue gas inlet 1 and a flue gas outlet 2, the bottom of the heat exchange cavity is provided with an ash dropping hopper 9, the top of the heat exchange cavity is provided with a water outlet collecting cavity 6, one side of the water outlet collecting cavity 6 is provided with a water outlet pipe 4, the bottom of the water outlet collecting cavity 6 is provided with a plurality of heat exchange pipes 7, and the heat exchange pipes 7 are communicated with the water outlet collecting cavity 6;
a water inlet collecting cavity 5 is arranged above a water outlet collecting cavity 6, a water inlet pipe 3 is arranged above one side of the water inlet collecting cavity 5, a plurality of water inlet guide pipes 8 are arranged at the bottom of the water inlet collecting cavity 5, the diameter of each water inlet guide pipe 8 is smaller than that of a heat exchange pipe 7, a plurality of water inlet guide pipes 8 penetrate through the water outlet collecting cavity 6 and correspondingly extend into the heat exchange pipes 7, a space is arranged between the end parts of the water inlet guide pipes 8 and the heat exchange pipes 7, and the bottoms of the water inlet guide pipes 8 are communicated with the heat exchange pipes 7.
According to the utility model, the heat exchange tubes 7 are vertically suspended and distributed, so that dust in the flue gas is ensured to directly fall into an ash accumulation bucket after being collided with the heat exchange tubes 7, and the heat exchange tubes 7 are free from ash accumulation; in addition, the water inlet conduit 8 and the heat exchange tube 7 are nested, and the water inlet conduit 8 directly guides cold water into the bottom of the heat exchange tube 7 to exchange heat with flue gas, so that the heat exchange efficiency is improved at two points.
And because the cooling water is input through the water inlet collecting cavity 5 at the top, whether the water is deficient in the heat exchange tube 7 is judged by judging whether the water inlet collecting cavity 5 is provided with water or not, and the problem of water deficiency and tube explosion of the heat exchanger is solved.
The bottom of the heat exchange tube 7 is preferably provided with a supporting structure, so that tension deformation caused by vertical arrangement of the heat exchange tube 7 to the bottom of the water outlet collecting cavity 6 is avoided.
It should be understood that these examples are for the purpose of illustrating the utility model only and are not intended to limit the scope of the utility model. Furthermore, it is to be understood that various changes, modifications and/or variations may be made by those skilled in the art after reading the technical content of the present utility model, and that all such equivalents are intended to fall within the scope of the present utility model as defined in the appended claims.
Claims (5)
1. The nested tube type heat exchanger is characterized by comprising a heat exchange cavity, wherein a smoke inlet and a smoke outlet are respectively arranged on two sides of the heat exchange cavity, a water outlet collecting cavity is arranged at the top of the heat exchange cavity, a plurality of heat exchange tubes are arranged at the bottom of the water outlet collecting cavity, and the heat exchange tubes are communicated with the water outlet collecting cavity;
the water inlet collecting cavity is arranged above the water outlet collecting cavity, a plurality of water inlet guide pipes are arranged at the bottom of the water inlet collecting cavity, the diameter of each water inlet guide pipe is smaller than that of the heat exchange pipe, a plurality of water inlet guide pipes penetrate through the water outlet collecting cavity and correspondingly extend into the heat exchange pipe, and the bottom of each water inlet guide pipe is communicated with the heat exchange pipe.
2. The nested tube heat exchanger of claim 1, wherein a water inlet tube is disposed above one side of the water inlet header and a water outlet tube is disposed on one side of the water outlet header.
3. A nested tube heat exchanger according to claim 1, wherein the bottom of the heat exchange chamber is provided with an ash hopper.
4. A nested tube heat exchanger according to claim 1, wherein a space is provided between the inlet conduit end and the heat exchange tube.
5. A nested tube heat exchanger according to claim 1, wherein the heat exchange tube bottom is provided with a support structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321529054.8U CN220119913U (en) | 2023-06-15 | 2023-06-15 | Nested tubular heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321529054.8U CN220119913U (en) | 2023-06-15 | 2023-06-15 | Nested tubular heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220119913U true CN220119913U (en) | 2023-12-01 |
Family
ID=88888881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321529054.8U Active CN220119913U (en) | 2023-06-15 | 2023-06-15 | Nested tubular heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220119913U (en) |
-
2023
- 2023-06-15 CN CN202321529054.8U patent/CN220119913U/en active Active
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| GR01 | Patent grant |