CN204513352U - A kind of high efficiency superheater - Google Patents
A kind of high efficiency superheater Download PDFInfo
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- CN204513352U CN204513352U CN201520113882.2U CN201520113882U CN204513352U CN 204513352 U CN204513352 U CN 204513352U CN 201520113882 U CN201520113882 U CN 201520113882U CN 204513352 U CN204513352 U CN 204513352U
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- heating chamber
- exhaust gases
- gases passes
- heating
- superheater
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Abstract
The utility model relates to a kind of high efficiency superheater, and superheater was arranged in heating flue, comprises one-level heating flow channel and the secondary heating flow channel being socketed in one-level heating flow channel outside; One-level heating flow channel comprises an exhaust gases passes A, is provided with heat exchange fin A in exhaust gases passes A, and the outer wall of exhaust gases passes A is provided with an annular heating chamber A; Secondary heating flow channel comprises an annular heating chamber B, is provided with ring smoke channel B between the inwall of ring-shaped heating cavity B and the outer wall of ring-shaped heating cavity A, and the heating chamber B of annular is communicated with by some tube connectors with between heating chamber A; Superheater is provided with the groove of a taper towards crossing heating flue side, the axis of conical socket is coaxial with exhaust gases passes A, and the bottom edge of conical socket is positioned in the outside wall surface of ring-shaped heating cavity B; Replaced the dividing wall type heat exchanger of original array pipeline configuration by the dividing wall type heat exchanger of loop configuration, reduce the flow resistance that high-temperature flue gas flows in superheater.
Description
Technical field
The utility model relates to a kind of high efficiency superheater, belongs to boiler structure accessory field.
Background technology
In fluidization boiler, superheater is a kind of heat transmission equipment in boiler, the saturated steam under certain pressure being heated into the overheated steam under relevant pressure.
Superheater can be divided into convection type, radiant type and half radiant type by heat transfer type; Coiled, screen formula, wall-and bag wall-can be divided into by design feature.They are all made up of some pipes in parallel and import and export header.The external diameter of pipe is generally 30 ~ 60 millimeters.Convection superheater is the most conventional, adopts coiled.It has the pipe group than comparatively dense, is arranged in the flue of 450 ~ 1000 DEG C of flue-gas temperatures, washes away by the horizontal and vertical of flue gas.Flue gas mainly transfers heat to pipe in the mode of convection current, also some radiant heat absorption.Pendant superheater is made up of multi-disc tube panel, is arranged in burner hearth internal upper part or exit, belongs to radiation or half radiant superheater.The former absorbs burner hearth flame radiation heat, and the latter also absorbs a part of convection heat.In station boiler more than 10 MPas, generally all dual-purpose shields formula and coiled two kinds of superheaters, to increase caloric receptivity.The wall superheater applied on inboard wall of burner hearth is radiant superheater, less employing.Bag wall superheater is used in the wall forming furnace roof and convection pass in jumbo station boiler, and outside is applied with heat-insulating material composition light boiler setting.
And above-mentioned superheater wherein cardinal principle be all transfer heat to pipe by the mode of convection current to carry out heat exchange, although it is larger to the disturbance of flue gas, but flow resistance is also higher, be difficult to discharge crossing after heat smoke carries out heat exchange timely, thus cause the flow rate of air in burner hearth slow, larger on the efficiency of combustion impact of boiler.
Utility model content
The technical problems to be solved in the utility model is: overcome that superheater flow resistance in prior art is larger, the technical problem of high, the intensity difference of cleaning difficulty, provides a kind of novel cylindrical shape superheater.
The utility model solves the technical scheme that its technical problem adopts:
A kind of high efficiency superheater, superheater was arranged in heating flue, comprised one-level heating flow channel and the secondary heating flow channel being socketed in one-level heating flow channel outside;
Described one-level heating flow channel comprises an exhaust gases passes A, heat exchange fin A is provided with in exhaust gases passes A, the outer wall of described exhaust gases passes A is provided with an annular heating chamber A, and the steam in described heating chamber A heats under the heat transfer of heat exchange fin A;
Described secondary heating flow channel comprises an annular heating chamber B, and be provided with the exhaust gases passes B of annular between the inwall of described heating chamber B and the outer wall of heating chamber A, described heating chamber B is communicated with by some tube connectors with between heating chamber A;
Superheater enters towards crossing heating flue the groove that mouth side is provided with a taper, and the axis of described groove is coaxial with exhaust gases passes A, and the bottom edge of conical socket is positioned in the outside wall surface of heating chamber B;
The exradius of described exhaust gases passes A is X, and the exradius of heating chamber A is Y, wherein 2X≤Y≤3X;
The exradius of described exhaust gases passes B is Z, wherein Z-Y≤X;
The exradius of described heating chamber B is W, wherein 2(W-Z)≤Y-X.
As further innovation of the present utility model, in described heating chamber A, be provided with some supporting members, between the outer wall that described supporting member is fixed on heating chamber A and inwall.
As further innovation of the present utility model, described supporting member comprises supporting rod, and described supporting rod is inner in being arranged in heating chamber A in a zigzag.
As further innovation of the present utility model, the cross section of described tube connector is water-drop-shaped, the axis of described water-drop-shaped and the axis being parallel of exhaust gases passes A, and mouth is entered towards what cross heating flue in the tip of described water-drop-shaped.
As further innovation of the present utility model, in exhaust gases passes B, be provided with some heat exchange fin B, described heat exchange fin is fixed between the outer wall of heating chamber A and the inwall of heating chamber B.
As further innovation of the present utility model, described heat exchange fin B comprises the conducting strip that some relative exhaust gases passes B axis annular arrays are arranged, the plane of described conducting strip and the axis being parallel of exhaust gases passes B, the angle of osculation between the plane of described conducting strip and the annular outer wall face of heating chamber A is less than 90 °.
As further innovation of the present utility model, described heat exchange fin A is spirality, the axis of screw of described heat exchange fin A and the axis coaxle of exhaust gases passes A.
As further innovation of the present utility model, be provided with some supporting components in described heating chamber B, described supporting component comprises some support wireropes being fixed on heating chamber B annular both sides internal face, and described support wirerope is netted layout.
The beneficial effects of the utility model are:
1, the utility model replaces the dividing wall type heat exchanger of original array pipeline configuration by the dividing wall type heat exchanger of a loop configuration, reduces the flow resistance that high-temperature flue gas flows in superheater;
Simultaneously the socket pipeline configuration of the utility model annular is compared to traditional heat pipe, and structure is optimized more, and globality is better, and intensity is higher, and under the state of and long-time use higher at flue gas flow rate, heat pipe ratio is easier to rock and breakage occurs;
And the utility model is compared to the superheater of traditional array tubular type, clears up also more convenient, can directly polish to inwall and be not easy to impact structural strength;
The utility model is to exhaust gases passes A, exhaust gases passes B, heating chamber A, the size of heating chamber B is also optimized, be positioned at middle exhaust gases passes A because flue gas flow rate is larger, in order to ensure good heat exchange efficiency, whole flue diameter is also larger, be positioned at the exhaust gases passes B at edge because edge flue-gas temperature is lower, flow velocity is also lower, if so adopt excessive heat exchange structure, cost performance also can be lower, the manufacturing cost of whole superheater can be raised, be mainly used in being incubated and ensureing the excessively good of high-temperature steam so be positioned at the exhaust gases passes B at edge and heating chamber B,
Taper enter mouth to enter plume road more level and smooth, effectively reduce flow resistance, improve heat exchange area, prevent flue gas to be detained at the smoke inlet place of superheater, affect heat exchange efficiency.
2, the heating that the steam of heating chamber A is subject to flue gas in exhaust gases passes A is rapidly heated, the micro-strain of heating chamber A wall that supporting member in heating chamber A can prevent from steam to be rapidly heated expanding and cause, prevent the metal fatigue that heating chamber A wall produces because of repeated deformation, improve security, supporting member also can improve the heat exchange area of heating chamber A to a certain extent simultaneously, improves heat exchange efficiency.
3, the support wirerope intensity of triangle setting is better, and consumptive material is also less, effectively can reduce the weight of structure.
4, the tube connector of water-drop-shaped has the advantages such as flow resistance is low, heat exchange area is large, can improve the heat exchange efficiency of equipment further.
5, the heat exchange fin in exhaust gases passes B, not only can adjust the gas flow in exhaust gases passes B, improves its length of flow in exhaust gases passes B, also can increase exhaust gases passes B and heat exchange efficiency simultaneously, improves heat exchange area.
6, the heat exchange fin in exhaust gases passes B is obliquely installed, and compared to the structure arranged perpendicular to tangent line, has larger heat exchange area, the heat exchange efficiency of further raising equipment.
7, spiral heat exchange fin structure, while ensureing larger heat exchange area, has less flow resistance, and compared to the heat exchanger plates structure that array is arranged, has better intensity.
8, netted supporting construction makes heat exchange area own obtain good heat transfer effect with regard to smaller heating chamber B, prevents high-temperature steam from lowering the temperature in heating chamber B further.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is horizontal section schematic diagram of the present utility model;
Fig. 2 is longitudinal profile schematic diagram of the present utility model.
Figure comprises: exhaust gases passes A1, heat exchange fin A2, heating chamber A3, supporting rod 4, exhaust gases passes B5, tube connector 6, heat exchange fin B7, heating chamber B8, support wirerope 9.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
As shown in Figure 1 and 2, the utility model is a kind of high efficiency superheater, and superheater was arranged in heating flue, comprises one-level heating flow channel and the secondary heating flow channel being socketed in one-level heating flow channel outside;
Described one-level heating flow channel comprises an exhaust gases passes A1, heat exchange fin A2 is provided with in exhaust gases passes A1, described heat exchange fin A2 is spirality, the axis of screw of described heat exchange fin A2 and the axis coaxle of exhaust gases passes A1, the outer wall of described exhaust gases passes A1 is provided with an annular heating chamber A3, steam in described heating chamber A3 heats under the heat transfer of heat exchange fin A2, some supporting rods 4 are provided with in the heating chamber A3 of described annular, described supporting rod 4 is inner in the heating chamber A3 being arranged in annular in a zigzag, between the outer wall and inwall of ring-shaped heating cavity A3,
Described secondary heating flow channel comprises an annular heating chamber B8, is provided with ring smoke channel B 5 between the inwall of described ring-shaped heating cavity B8 and the outer wall of ring-shaped heating cavity A3;
Some heat exchange fin B7 are provided with in exhaust gases passes B5, described heat exchange fin B7 comprises the conducting strip that some relative exhaust gases passes B5 axis annular arrays are arranged, the plane of described conducting strip and the axis being parallel of exhaust gases passes B5, the angle of osculation between the plane of described conducting strip and the annular outer wall face of heating chamber A3 is less than 90 °, and described heat exchange fin is fixed between the outer wall of heating chamber A3 and the inwall of heating chamber B8;
Also be provided with some supporting components in described heating chamber B8, described supporting component comprises some support wireropes 9 being fixed on heating chamber B8 annular both sides internal face, and described support wirerope 9 is in netted layout;
The heating chamber B8 of described annular is communicated with by some tube connectors 6 with between heating chamber A3, and the cross section of described tube connector 6 is water-drop-shaped, the axis of described water-drop-shaped and the axis being parallel of exhaust gases passes A1, and mouth is entered towards what cross heating flue in the tip of described water-drop-shaped;
Superheater enters towards crossing heating flue the groove that mouth side is provided with a taper, and the axis of described conical socket is coaxial with exhaust gases passes A1, and the bottom edge of conical socket is positioned in the outside wall surface of ring-shaped heating cavity B8;
The exradius of described exhaust gases passes A1 is the exradius of X, ring-shaped heating cavity A3 is Y, wherein 2X≤Y≤3X;
The exradius of described exhaust gases passes B5 is Z, wherein Z-Y≤X;
The exradius of the heating chamber B8 of described annular is W, wherein 2(W-Z)≤Y-X.
During use, the blast pipe of drum is connected to heating chamber A3, steam is in heating chamber A3, under the heating of center exhaust gases passes A1, be rapidly heated, volume expands towards surrounding, thus enter in heating chamber B8 by tube connector 6, the flue-gas temperature being positioned at edge is relatively low, further can be heated the superheated steam from heating chamber A3 by exhaust gases passes B5, superheated steam in heating chamber B8 is expanded further, and the superheated steam in last heating chamber B8 enters in steam turbine, carries out expansion and does manual work.
The technological progress of this product has:
1, replaced the dividing wall type heat exchanger of original array pipeline configuration by the dividing wall type heat exchanger of a loop configuration, reduce the flow resistance that high-temperature flue gas flows in superheater;
Simultaneously the socket pipeline configuration of the utility model annular is compared to traditional heat pipe, and structure is optimized more, and globality is better, and intensity is higher, and under the state of and long-time use higher at flue gas flow rate, heat pipe ratio is easier to rock and breakage occurs;
And the utility model is compared to the superheater of traditional array tubular type, clears up also more convenient, can directly polish to inwall and be not easy to impact structural strength;
The size of exhaust gases passes A, exhaust gases passes B, heating chamber A, heating chamber B is also optimized, be positioned at middle exhaust gases passes A because flue gas flow rate is larger, in order to ensure good heat exchange efficiency, whole flue diameter is also larger, be positioned at the exhaust gases passes B at edge because edge flue-gas temperature is lower, flow velocity is also lower, if so adopt excessive heat exchange structure, cost performance also can be lower, the manufacturing cost of whole superheater can be raised, be mainly used in being incubated and ensureing the excessively good of high-temperature steam so be positioned at the exhaust gases passes B at edge and heating chamber B;
Taper enter mouth to enter plume road more level and smooth, effectively reduce flow resistance, improve heat exchange area, prevent flue gas to be detained at the smoke inlet place of superheater, affect heat exchange efficiency.
2, the heating that the steam of heating chamber A is subject to flue gas in exhaust gases passes A is rapidly heated, the micro-strain of heating chamber A wall that supporting member in heating chamber A can prevent from steam to be rapidly heated expanding and cause, prevent the metal fatigue that heating chamber A wall produces because of repeated deformation, improve security, supporting member also can improve the heat exchange area of heating chamber A to a certain extent simultaneously, improves heat exchange efficiency.
3, the support wirerope intensity of triangle setting is better, and consumptive material is also less, effectively can reduce the weight of structure.
4, the tube connector of water-drop-shaped has the advantages such as flow resistance is low, heat exchange area is large, can improve the heat exchange efficiency of equipment further.
5, the heat exchange fin in exhaust gases passes B, not only can adjust the gas flow in exhaust gases passes B, improves its length of flow in exhaust gases passes B, also can increase exhaust gases passes B and heat exchange efficiency simultaneously, improves heat exchange area.
6, the heat exchange fin in exhaust gases passes B is obliquely installed, and compared to the structure arranged perpendicular to tangent line, has larger heat exchange area, the heat exchange efficiency of further raising equipment.
7, spiral heat exchange fin structure, while ensureing larger heat exchange area, has less flow resistance, and compared to the heat exchanger plates structure that array is arranged, has better intensity.
8, netted supporting construction makes heat exchange area own obtain good heat transfer effect with regard to smaller heating chamber B, prevents high-temperature steam from lowering the temperature in heating chamber B further.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on description, must determine its technical scope according to right.
Claims (8)
1. a high efficiency superheater, superheater was arranged in heating flue, it is characterized in that: comprise one-level heating flow channel and the secondary heating flow channel being socketed in one-level heating flow channel outside;
Described one-level heating flow channel comprises an exhaust gases passes A, heat exchange fin A is provided with in exhaust gases passes A, the outer wall of described exhaust gases passes A is provided with an annular heating chamber A, and the steam in described heating chamber A heats under the heat transfer of heat exchange fin A;
Described secondary heating flow channel comprises an annular heating chamber B, and be provided with the exhaust gases passes B of annular between the inwall of described heating chamber B and the outer wall of heating chamber A, described heating chamber B is communicated with by some tube connectors with between heating chamber A;
Superheater enters towards crossing heating flue the groove that mouth side is provided with a taper, and the axis of described groove is coaxial with exhaust gases passes A, and the bottom edge of conical socket is positioned in the outside wall surface of heating chamber B;
The exradius of described exhaust gases passes A is X, and the exradius of heating chamber A is Y, wherein 2X≤Y≤3X;
The exradius of described exhaust gases passes B is Z, wherein Z-Y≤X;
The exradius of described heating chamber B is W, wherein 2(W-Z)≤Y-X.
2. a kind of high efficiency superheater as claimed in claim 1, is characterized in that: in described heating chamber A, be provided with some supporting members, between the outer wall that described supporting member is fixed on heating chamber A and inwall.
3. a kind of high efficiency superheater as claimed in claim 3, is characterized in that: described supporting member comprises supporting rod, and described supporting rod is inner in being arranged in heating chamber A in a zigzag.
4. a kind of high efficiency superheater as claimed in claim 1, is characterized in that: the cross section of described tube connector is water-drop-shaped, the axis of described water-drop-shaped and the axis being parallel of exhaust gases passes A, and mouth is entered towards what cross heating flue in the tip of described water-drop-shaped.
5. a kind of high efficiency superheater as claimed in claim 1, is characterized in that: in exhaust gases passes B, be provided with some heat exchange fin B, described heat exchange fin is fixed between the outer wall of heating chamber A and the inwall of heating chamber B.
6. a kind of high efficiency superheater as claimed in claim 5, it is characterized in that: described heat exchange fin B comprises the conducting strip that some relative exhaust gases passes B axis annular arrays are arranged, the plane of described conducting strip and the axis being parallel of exhaust gases passes B, the angle of osculation between the plane of described conducting strip and the annular outer wall face of heating chamber A is less than 90 °.
7. a kind of high efficiency superheater as claimed in claim 1, is characterized in that: described heat exchange fin A is spirality, the axis of screw of described heat exchange fin A and the axis coaxle of exhaust gases passes A.
8. a kind of high efficiency superheater as claimed in claim 1, it is characterized in that: be provided with in described heating chamber B and support some assemblies, described supporting component comprises some support wireropes being fixed on heating chamber B annular both sides internal face, and described support wirerope is netted layout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520113882.2U CN204513352U (en) | 2015-02-17 | 2015-02-17 | A kind of high efficiency superheater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520113882.2U CN204513352U (en) | 2015-02-17 | 2015-02-17 | A kind of high efficiency superheater |
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| CN204513352U true CN204513352U (en) | 2015-07-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676577A (en) * | 2015-02-17 | 2015-06-03 | 无锡昊瑜节能环保设备有限公司 | High-efficiency superheater |
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2015
- 2015-02-17 CN CN201520113882.2U patent/CN204513352U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676577A (en) * | 2015-02-17 | 2015-06-03 | 无锡昊瑜节能环保设备有限公司 | High-efficiency superheater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20160217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |