CN212133364U - Graded condensation heat exchange tube set and condensation heat exchanger - Google Patents
Graded condensation heat exchange tube set and condensation heat exchanger Download PDFInfo
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- CN212133364U CN212133364U CN202020234813.8U CN202020234813U CN212133364U CN 212133364 U CN212133364 U CN 212133364U CN 202020234813 U CN202020234813 U CN 202020234813U CN 212133364 U CN212133364 U CN 212133364U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model discloses a hierarchical condensation heat exchange tube group and discloses a condensation heat exchanger, wherein the hierarchical condensation heat exchange tube group comprises a first spiral heat exchange tube, the outer side wall of the first spiral heat exchange tube is provided with fins along the length extending direction of the first spiral heat exchange tube, one end of the first spiral heat exchange tube is provided with a first transfer interface, and the other end of the first spiral heat exchange tube is provided with a water outlet interface; the second spiral heat exchange tube is positioned on the outer side of the first spiral heat exchange tube, one end of the second spiral heat exchange tube is provided with a water inlet interface, and the other end of the second spiral heat exchange tube is provided with a second transfer interface; wherein, first transfer interface with be connected with intercommunication water box between the second transfer interface, the utility model provides the high heat exchange efficiency of aqueous solution and flue gas to whole simple process structure, low in production cost, the effective heat transfer area of nest of tubes is big, and the holistic life of heat exchanger is also longer.
Description
Technical Field
The utility model relates to a heat exchange equipment, in particular to hierarchical condensation heat transfer tube group and condensation heat exchanger.
Background
In the prior common fully-premixed condensing coil heat exchanger, a heat exchange tube main body mainly has a single coil and a double coil, and the heat exchange tube is a round or flat light tube, so that the heat exchange area is limited; the condensation pipe section is mostly the light pipe single with main heat exchange tube form, and only occupies the few part of whole section heat exchange tube, only has several rings of terminal coil pipes that the index can be many usually, and after holistic condensation heat transfer effect reached a bottleneck, it was difficult to further increase heat exchange efficiency. In order to improve the heat exchange efficiency of the coil heat exchanger, at present, most of coil heat exchangers have more pipelines, so that the coil clearance is too small, the coil heat exchangers are difficult to adapt to the domestic complex water-gas environment, and scaling and blockage phenomena are prone to occurring.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hierarchical condensation heat transfer tube group and condensation heat exchanger to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.
The technical scheme adopted for solving the technical problems is as follows:
first, a staged condensation heat exchange tube set includes: the outer side wall of the first spiral heat exchange tube is provided with a fin along the length extending direction of the first spiral heat exchange tube, one end of the first spiral heat exchange tube is provided with a first transfer interface, and the other end of the first spiral heat exchange tube is provided with a water outlet interface; the second spiral heat exchange tube is positioned on the outer side of the first spiral heat exchange tube, one end of the second spiral heat exchange tube is provided with a water inlet interface, and the other end of the second spiral heat exchange tube is provided with a second transfer interface; and a communicating water box is connected between the first transfer interface and the second transfer interface.
The technical scheme at least has the following beneficial effects: when in heat exchange, high-temperature flue gas diffuses outwards at the inner side of the first spiral heat exchange tube, firstly passes through the first spiral heat exchange tube, the fins on the first spiral heat exchange tube enhance the heat exchange effect, most of heat in the flue gas exchanges heat with the first spiral heat exchange tube, then passes through the second spiral heat exchange tube, and a medium needing heat exchange, such as an aqueous solution, flows in from a water inlet interface on the second spiral heat exchange tube, flows into the communicated water box from a second transfer interface, then flows into the first spiral heat exchange tube from the first transfer interface, and finally flows out from a water outlet interface, in the process, the aqueous solution exchanges heat with the flue gas passing through the second spiral heat exchange tube, the heat in the flue gas is fully absorbed and utilized, and then exchanges heat with the flue gas passing through the first spiral heat exchange tube, the heat exchange efficiency of the aqueous solution and the flue gas is greatly improved, the whole process structure is, the effective heat exchange area of nest of tubes is big, and nest of tubes clearance and fin interval can be bigger than traditional setting, and the heat transfer is reinforceed to outer lane heat exchange tube, and the surface turbulent flow is abundant, and flue gas heat transfer passageway is smooth, is difficult to the scale deposit and blocks up, can relatively adapt to internal complicated aqueous vapor environment, effectively prolongs the holistic life of heat exchanger, avoids indirect heating equipment too frequent maintenance cycle and part loss to change.
As a further improvement of the technical scheme, a spiral spoiler is arranged in the first spiral heat exchange tube. The spiral spoiler can disturb the heat exchange medium in the first spiral heat exchange pipe, so that the inside generates turbulent flow, the heat exchange with the flue gas is more uniform, and the heat exchange effect is improved.
As a further improvement of the technical scheme, the second spiral heat exchange tube is a corrugated tube. The corrugated pipe is good in condensation enhanced heat exchange effect, the condensation heat exchange effect can be effectively improved, and the overall heat exchange efficiency of the pipe group is further improved.
As a further improvement of the technical scheme, an opening is formed in the communicated water box, and a sealing end cover is arranged in the opening. The first spiral heat exchange tube and the second spiral heat exchange tube are communicated with each other through the communicating water box, the communicating water box can be cleaned through the opening, and the sealing end cover is used for sealing the opening.
As a further improvement of the technical scheme, the water inlet connector is connected with a water inlet joint in a sealing manner. The external pipeline is conveniently connected to the water inlet joint.
As a further improvement of the technical scheme, the water outlet interface is connected with a water outlet joint in a sealing manner. The external pipeline is conveniently connected to the water outlet joint.
As a further improvement of the technical scheme, a limiting clamp spring is arranged on the second spiral heat exchange tube and comprises a connecting piece and arc limiting pieces arranged on the connecting piece, the arc limiting pieces are arranged along the length direction of the connecting piece and provided with a plurality of parts, arc openings of the arc limiting pieces face away from one side of the connecting piece, the pitch of the second spiral heat exchange tube is equal to any adjacent two intervals of the arc limiting pieces, and therefore any one of the arc limiting pieces is wrapped on any one of the circles of the second spiral heat exchange tube. Each circle of the second spiral heat exchange tube is limited and fixed by the limiting clamp spring, so that the resilience stress of the second spiral heat exchange tube can be reduced, the second spiral heat exchange tube is prevented from being shrunk and rebounded, and the pitch is limited within an even range.
Then, the utility model also provides a condensation heat exchanger, including the heat exchanger body, this internal above-mentioned fractional condensation heat transfer tube group that is provided with of heat exchanger.
The technical scheme at least has the following beneficial effects: the condensation heat exchanger that has this hierarchical condensation heat transfer tube group, can utilize the heat of flue gas more fully, the flue gas can not directly discharge after heating to the aqueous solution, can continue to carry out preliminary preheating to the aqueous solution of just adding, greatly improved the utilization ratio to the flue gas heat, nest of tubes clearance and fin interval in the condensation heat exchanger are great, outer lane bellows surface turbulence is abundant, flue gas heat transfer passageway is smooth, be difficult for the scale deposit to block up, can be relatively adapt to the internal complicated aqueous vapor environment, effectively prolong the holistic life of heat exchanger, avoid indirect heating equipment too frequent maintenance cycle and part loss to change.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is the schematic diagram of the structure of the limit clamp spring of the present invention.
In the drawings: 100-a first spiral heat exchange tube, 110-a first transfer interface, 120-a water outlet interface, 130-a water outlet joint, 140-a communicating water box, 200-a second spiral heat exchange tube, 210-a second transfer interface, 220-a water inlet interface, 230-a water inlet joint, 300-a limiting clamp spring, 310-a connecting sheet and 320-an arc limiting sheet.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
A staged condensation heat exchange tube set comprises a first spiral heat exchange tube 100, wherein fins are arranged on the first spiral heat exchange tube 100 along the length extension direction of the first spiral heat exchange tube 100, the fins increase the contact area with flue gas and enhance heat exchange, the outer side of the first spiral heat exchange tube 100 is surrounded by a second spiral heat exchange tube 200, the central axis of the first spiral heat exchange tube 100 and the central axis of the second spiral heat exchange tube 200 are arranged in a collinear manner, during heat exchange, high-temperature flue gas diffuses outwards at the inner side of the first spiral heat exchange tube 100 and passes through the first spiral heat exchange tube 100 firstly, most of heat in the flue gas exchanges heat with the first spiral heat exchange tube 100 and then passes through the second spiral heat exchange tube 200, and a medium needing heat exchange, such as an aqueous solution, flows in from a water inlet 220 on the second spiral heat exchange tube 200, flows in a communicating water box 140 from a second transfer interface 210 and then flows in the first spiral heat exchange tube 100 from the first transfer interface, and finally, the water solution flows out from the water outlet interface 120, the water solution exchanges heat with the flue gas passing through the second spiral heat exchange tube 200 in the process, the heat in the flue gas is fully absorbed and utilized, and then the water solution exchanges heat with the flue gas passing through the first spiral heat exchange tube 100, so that the heat exchange efficiency of the water solution and the flue gas is greatly improved, the whole process is simple in structure and low in production cost, the effective heat exchange area of the tube group is large, the gap and the fin interval of the tube group can be larger than those of the traditional arrangement, the heat exchange is strengthened by the outer ring heat exchange tube, the surface turbulence is sufficient, the flue gas heat exchange channel is smooth, scaling and blocking are not easy, the heat exchanger can better adapt to the domestic complex water-gas environment, the service life of the whole.
In this embodiment, the first spiral heat exchanging pipe 100 is provided with spiral spoilers therein. The spiral spoiler can disturb the heat exchange medium in the first spiral heat exchange tube 100, so that the inside generates turbulent flow, the heat exchange with the flue gas is more uniform, and the heat exchange effect is improved.
In this embodiment, the second spiral heat exchange tube 200 is a corrugated tube. The corrugated pipe is good in condensation enhanced heat exchange effect, the condensation heat exchange effect can be effectively improved, the water solution forms turbulent flow in the corrugated pipe, secondary flow is formed after the water solution enters the first spiral heat exchange pipe 100, and the overall heat exchange efficiency of the pipe group is further improved.
In this embodiment, the communicating water box 140 has an opening therein, and a sealing end cap is disposed in the opening. The first spiral heat exchange tube 100 and the second spiral heat exchange tube 200 are communicated with each other by the communicating water box 140, the communicating water box 140 can be cleaned through the opening, and the sealing end cover is used for sealing the opening.
In some embodiments, the water inlet interface 220 is sealingly connected with a water inlet connector 230. It is convenient to connect the external pipes to the water inlet joint 230.
In some embodiments, the outlet port 120 is sealingly connected to an outlet fitting 130. It is convenient to connect the external pipes to the water outlet joint 130.
As shown in fig. 2, in this embodiment, a limiting clamp spring 300 is disposed on the second spiral heat exchange tube 200, the limiting clamp spring 300 includes a connecting sheet 310 and arc-shaped limiting pieces 320 disposed on the connecting sheet 310, the arc-shaped limiting pieces 320 are arranged in the length direction of the connecting sheet 310, the arc-shaped openings of the arc-shaped limiting pieces 320 face the side away from the connecting sheet 310, the pitch of the second spiral heat exchange tube 200 is equal to the distance between any two adjacent arc-shaped limiting pieces 320, so that any one of the arc-shaped limiting pieces 320 is wrapped on any one of the circles of the second spiral heat exchange tube 200. Utilize spacing jump ring 300 to carry out spacing fixed to each circle of second spiral heat exchange tube 200, reducible second spiral heat exchange tube 200's resilience stress avoids second spiral heat exchange tube 200 shrink resilience to inject the pitch at even within range, if second spiral heat exchange tube 200 adopts the bellows, utilize spacing jump ring 300 can entangle the bellows of every circle, still can avoid taking place the phenomenon of mutual interlock between two adjacent circles of bellows.
The utility model also provides a condensing heat exchanger, including the heat exchanger body, this internal above-mentioned fractional condensation heat exchange tube group that is provided with of heat exchanger.
The condensation heat exchanger that has this hierarchical condensation heat transfer tube group, can utilize the heat of flue gas more fully, the flue gas can not directly discharge after heating to the aqueous solution, can continue to carry out preliminary preheating to the aqueous solution of just adding, greatly improved the utilization ratio to the flue gas heat, nest of tubes clearance and fin interval in the condensation heat exchanger are great, outer lane bellows surface turbulence is abundant, flue gas heat transfer passageway is smooth, be difficult for the scale deposit to block up, can be relatively adapt to the internal complicated aqueous vapor environment, effectively prolong the holistic life of heat exchanger, avoid indirect heating equipment too frequent maintenance cycle and part loss to change.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge range of those skilled in the art.
Claims (8)
1. The utility model provides a hierarchical condensation heat transfer tube group which characterized in that: the method comprises the following steps:
the outer side wall of the first spiral heat exchange tube (100) is provided with fins along the length extension direction of the first spiral heat exchange tube (100), one end of the first spiral heat exchange tube (100) is provided with a first transfer interface (110), and the other end of the first spiral heat exchange tube (100) is provided with a water outlet interface (120);
the second spiral heat exchange tube (200) is positioned on the outer side of the first spiral heat exchange tube (100), one end of the second spiral heat exchange tube (200) is provided with a water inlet interface (220), and the other end of the second spiral heat exchange tube (200) is provided with a second transfer interface (210);
wherein, be connected with between first transfer interface (110) and the second transfer interface (210) and communicate water box (140).
2. The staged condensation heat exchange tube set according to claim 1, wherein: and a spiral spoiler is arranged in the first spiral heat exchange tube (100).
3. The staged condensation heat exchange tube set according to claim 1, wherein: the second spiral heat exchange tube (200) is a corrugated tube.
4. The staged condensation heat exchange tube set according to claim 1, wherein: an opening is formed in the communicating water box (140), and a sealing end cover is arranged in the opening.
5. The staged condensation heat exchange tube set according to claim 1, wherein: the water inlet connector (220) is connected with a water inlet connector (230) in a sealing mode.
6. The staged condensation heat exchange tube set according to claim 1, wherein: the water outlet interface (120) is connected with a water outlet joint (130) in a sealing way.
7. The staged condensation heat exchange tube set according to claim 1, wherein: be provided with spacing jump ring (300) on second spiral heat exchange tube (200), spacing jump ring (300) include connection piece (310), set up in spacing piece (320) of arc on connection piece (310), spacing piece (320) of arc are followed the length direction of connection piece (310) is arranged and is provided with a plurality of, the arc opening orientation of the spacing piece of arc (320) is kept away from one side of connection piece (310), the pitch of second spiral heat exchange tube (200) and arbitrary adjacent two the interval of the spacing piece of arc (320) is equal, makes arbitrary spacing piece of arc (320) parcel is in arbitrary circling of second spiral heat exchange tube (200).
8. A condensing heat exchanger, characterized in that: comprises a heat exchanger body, wherein the staged condensation heat exchange tube set as claimed in any one of claims 1 to 7 is arranged in the heat exchanger body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020234813.8U CN212133364U (en) | 2020-02-28 | 2020-02-28 | Graded condensation heat exchange tube set and condensation heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020234813.8U CN212133364U (en) | 2020-02-28 | 2020-02-28 | Graded condensation heat exchange tube set and condensation heat exchanger |
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| Publication Number | Publication Date |
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| CN212133364U true CN212133364U (en) | 2020-12-11 |
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| CN202020234813.8U Active CN212133364U (en) | 2020-02-28 | 2020-02-28 | Graded condensation heat exchange tube set and condensation heat exchanger |
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| CN (1) | CN212133364U (en) |
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- 2020-02-28 CN CN202020234813.8U patent/CN212133364U/en active Active
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