CN212806659U - Gas combustion heat recovery heat exchanger - Google Patents
Gas combustion heat recovery heat exchanger Download PDFInfo
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- CN212806659U CN212806659U CN202021001397.3U CN202021001397U CN212806659U CN 212806659 U CN212806659 U CN 212806659U CN 202021001397 U CN202021001397 U CN 202021001397U CN 212806659 U CN212806659 U CN 212806659U
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Abstract
The utility model discloses a gas combustion heat recovery heat exchanger, which comprises a shell, a first pipe box, a second pipe box and a plurality of heat exchange pipes, wherein the shell is provided with a left port and a right port, and the side wall of the shell is provided with a shell pass inlet and a shell pass outlet; the first tube box is connected to the left port, a tube pass partition plate is arranged in the first tube box and divides the first tube box into an inlet cavity and an outlet cavity, the inlet cavity is provided with a tube pass inlet, and the outlet cavity is provided with a tube pass outlet; the second tube box is connected to the right port; the outer peripheral wall of the heat exchange tube is of a spiral tube structure, the left end of the heat exchange tube is fixedly connected and communicated with the first tube box, and the right end of the heat exchange tube is fixedly connected and communicated with the second tube box. The high-temperature tail gas can flow spirally along the outer wall of the heat exchange tube, so that the scouring force of the high-speed tail gas on the heat exchange tube is reduced, the area of convective heat transfer is increased, the convective heat transfer coefficient of fluid in the shell is increased, two-stage heat transfer is realized between the fluid subjected to heat transfer and the tail gas in the shell, and the heat recovery efficiency of the high-temperature tail gas is improved.
Description
Technical Field
The utility model relates to a technical field of the heat transfer, in particular to gas combustion heat recovery heat exchanger.
Background
At present, a lot of factory combustion equipment adopts gas as fuel, and the gas can generate high-temperature tail gas in combustion. The high-temperature tail gas can cause harm to the environment firstly and also cause waste of energy secondly. The heat of this high temperature tail gas is retrieved through the waste heat recovery heat exchanger to prior art, but because tail gas doping is more dust, and the velocity of flow is very fast, current waste heat recovery heat exchanger generally sets up conventional heat exchange tube in its inside and carries out the heat transfer, and the impact force of tail gas that comes the high-speed flow to conventional heat exchange tube is very big, causes the pine of heat exchange tube to take off easily, influences life, and its heat transfer area of current heat exchange tube is less for the heat exchange efficiency of waste heat recovery heat exchanger reduces.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas combustion heat recovery 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:
a gas fired heat recovery heat exchanger comprising: the heat exchange tube comprises a shell, a first tube box, a second tube box and a heat exchange tube, wherein the shell is arranged in a left-right through manner, the shell is provided with a left end port and a right end port, and a shell pass inlet and a shell pass outlet are formed in the side wall of the shell; the first tube box is connected to the left port, a tube pass partition plate is arranged in the first tube box and divides the first tube box into an inlet cavity and an outlet cavity, the inlet cavity is provided with a tube pass inlet, and the outlet cavity is provided with a tube pass outlet; the second pipe box is connected to the right port; the quantity of heat exchange tube is provided with a plurality ofly, the periphery wall of heat exchange tube is the helical tube structure, and is a plurality of the heat exchange tube is about being extended and sets up in the casing, the left end and the first pipe case fixed connection of heat exchange tube, it is a plurality of the heat exchange tube communicates with import chamber, export chamber respectively, the right-hand member and the second pipe case fixed connection and the intercommunication of heat exchange tube.
The utility model has the advantages that: when the heat exchanger is used, high-temperature tail gas enters the shell from the shell side inlet and is discharged from the shell side outlet after exchanging heat with the heat exchange tube, and the outer peripheral wall of the heat exchange tube is of a spiral tube structure, so that the high-temperature tail gas can flow spirally along the outer wall of the heat exchange tube, the scouring force of the high-speed tail gas on the heat exchange tube is reduced, the area of convective heat exchange is also increased, gas in the shell can be disturbed, turbulence is formed at a low flow speed, and the convective heat exchange coefficient of fluid in the shell is further increased; meanwhile, fluid for heat exchange enters the inlet cavity from the tube side inlet, sequentially flows through the inside of the heat exchange tube on one side, the inside of the second tube box and the heat exchange tube on the other side, and is finally discharged from the tube side outlet through the outlet cavity, so that two-stage heat exchange is realized between the fluid for heat exchange and tail gas in the shell, the heat exchange efficiency of the heat exchanger is improved, and the heat recovery efficiency of the high-temperature tail gas is improved.
As a further improvement of the above technical scheme, a shell-side partition plate is fixed in the shell, the shell-side partition plate and the tube-side partition plate are positioned on the same horizontal plane, the shell is divided into a U-shaped shell-side channel by the shell-side partition plate, the shell-side channel is provided with an inlet end and an outlet end, the shell-side inlet is communicated with the inlet end, and the shell-side outlet is communicated with the outlet end.
The shell pass partition plate can form a U-shaped shell pass channel in the shell, the flow of tail gas flowing through the shell is prolonged, and therefore the heat exchange time of the tail gas and heat exchange fluid is prolonged, the heat exchange tubes are arranged in the shell pass channel, high-temperature tail gas enters from a shell pass inlet, then passes through the U-shaped shell pass channel and exchanges heat with the heat exchange fluid in the heat exchange tubes, the temperature of the high-temperature tail gas discharged from a shell pass outlet is close to the temperature of the heat exchange fluid discharged from a tube pass outlet as far as possible, and the heat exchange efficiency is improved.
As a further improvement of the above technical solution, the shell-side inlet is disposed below the left end of the housing, the shell-side outlet is disposed above the left end of the housing, the inlet chamber is disposed below the first tube box, and the outlet chamber is disposed above the first tube box.
During heat exchange, heat exchange fluid flows through the heat exchange tubes on the lower side from left to right after entering from the inlet cavity, and high-temperature tail gas also flows through the shell pass channels on the lower side from left to right after entering from the shell pass outlet, so that the high-temperature tail gas exchanges heat with the low-temperature heat exchange fluid; then the heat exchange fluid flows into the second tube box, flows through the heat exchange tube on the upper side from right to left, the tail gas flows through the shell pass channel on the upper side from right to left by bending the shell pass channel, and then the tail gas continuously exchanges heat with the heat exchange fluid, so that the heat of the tail gas can be completely transferred to the heat exchange fluid as far as possible.
As a further improvement of the technical scheme, a left tube plate and a right tube plate are fixed in the shell, the left tube plate and the right tube plate are arranged in a left-right parallel mode, first mounting holes are formed in the left tube plate and the right tube plate respectively, a plurality of first mounting holes are formed in the first mounting holes, the first mounting holes correspond to the heat exchange tubes one to one, and the left end and the right end of each heat exchange tube are sleeved in the corresponding first mounting holes respectively.
When the heat exchanger is assembled, the left end and the right end of the heat exchange tube are respectively sleeved on the first mounting hole of the left tube plate and the first mounting hole of the right tube plate, the stability of supporting the heat exchange tube is improved through the left tube plate and the right tube plate, and the phenomenon that the heat exchange tube falls off is avoided.
As a further improvement of the above technical solution, second mounting holes are formed in the side wall of the first tube box close to the housing and the side wall of the second tube box close to the housing, the second mounting holes are provided in plurality, the second mounting holes correspond to the first mounting holes one to one, and the end of the heat exchange tube penetrates through the first mounting hole and then is sleeved with the second mounting holes. First pipe case is connected through the left end of second mounting hole with the heat exchange tube, and second pipe case is connected through the right-hand member of second mounting hole with the heat exchange tube, further improves the fastness that supports the heat exchange tube, avoids heat exchange tube and first pipe case, second pipe case gap to appear, and leads to shell side and tube side cluster to pass through.
As a further improvement of the technical scheme, the left end and the right end of the heat exchange tube are respectively and coaxially connected with a connecting light tube, and the heat exchange tube is sleeved in the first mounting hole and the second mounting hole through the connecting light tubes.
When the heat exchange tube is installed, the connecting light tube is matched with the first installation hole and the second installation hole, and the heat exchange tube is sleeved in the corresponding first installation hole and the second installation hole in sequence through the connecting light tube, so that the heat exchange tube is convenient to install and fix.
Drawings
The present invention will be further explained with reference to the drawings and examples;
fig. 1 is a schematic structural view of an embodiment of a gas combustion heat recovery heat exchanger provided by the present invention;
FIG. 2 is a front sectional view of an embodiment of a gas combustion heat recovery heat exchanger provided in the present invention;
FIG. 3 is a partial enlarged view A of FIG. 2;
fig. 4 is a schematic structural diagram of an embodiment of the heat exchange tube provided by the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of 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, if words such as "a plurality" are used, the meaning is one or more, the meaning of a plurality of words is two or more, and the meaning of more than, less than, more than, etc. is understood as not including the number, and the meaning of more than, less than, more than, etc. is understood as including the number.
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.
Referring to fig. 1 to 4, the utility model discloses a gas combustion heat recovery heat exchanger makes following embodiment:
the gas combustion heat recovery heat exchanger of the embodiment includes: the heat exchange tube comprises a shell 100, a first tube box 200, a second tube box 300 and a heat exchange tube 400, wherein the shell 100 is arranged in a left-right through manner, the shell 100 is provided with a left port and a right port, the first tube box 200 is connected with the left port, the second tube box 300 is connected with the right port, a tube pass partition plate 210 is arranged in the first tube box 200, the first tube box 200 is divided into an inlet cavity 220 and an outlet cavity 230 by the tube pass partition plate 210, the inlet cavity 220 is provided with a tube pass inlet 240, the outlet cavity 230 is provided with a tube pass outlet 250, a plurality of heat exchange tubes 400 are arranged in the first tube box 200, as shown in figure 4, the peripheral wall of the heat exchange tube 400 is of a spiral tube structure, the plurality of heat exchange tubes 400 extend leftwards and rightwards and are arranged in the shell 100, the left end of the heat exchange tube 400 is fixedly connected with the first tube box 200, the left ends of the heat exchange tubes 400 are respectively, a shell-side partition 130 is fixed in the shell 100, the shell-side partition 130 and the tube-side partition 210 are located on the same horizontal plane, the shell-side partition 130 divides the shell 100 into a U-shaped shell-side channel 140, the shell-side channel 140 is provided with an inlet end and an outlet end, the inlet end is provided with a shell-side inlet 110, and the outlet end is provided with a shell-side outlet 120.
In some embodiments, the shell-side separation plate 130 may be disposed near the second tube box 300, while the shell-side separation plate 130 of the present embodiment is disposed near the first tube box 200, such that the shell-side inlet 110 is disposed below the left end of the shell 100, the shell-side outlet 120 is disposed above the left end of the shell 100, the inlet chamber 220 is disposed below the first tube box 200, and the outlet chamber 230 is disposed above the first tube box 200.
When the shell pass heat exchanger is used, high-temperature tail gas enters the U-shaped shell pass channel 140 from the shell pass inlet 110, flows through the shell pass channel 140 on the lower side from left to right, flows through the shell pass channel 140 on the upper side from right to left after being bent through the shell pass channel 140, exchanges heat with the heat exchange tubes 400 in the shell pass channel 140, and is discharged from the shell pass outlet 120, so that the flow path of the tail gas flowing through the shell 100 can be prolonged. Meanwhile, the fluid for heat exchange enters the inlet cavity 220 from the tube side inlet 240, sequentially flows through the inside of the upper heat exchange tube 400, the inside of the second tube box 300 and the lower heat exchange tube 400, and is finally discharged from the tube side outlet 250 through the outlet cavity 230, so that the fluid for heat exchange and the tail gas in the shell side channel 140 realize two-stage heat exchange, the heat exchange time of the tail gas and the heat exchange fluid is prolonged, and the heat of the tail gas can be completely transferred to the heat exchange fluid as far as possible.
The outer peripheral wall based on the heat exchange tube 400 is of a spiral tube structure, and high-temperature tail gas can flow spirally along the outer wall of the heat exchange tube 400, so that the scouring force of the high-speed tail gas on the heat exchange tube 400 can be reduced, and the area of convective heat transfer is also increased. When the flow velocity of the tail gas is reduced, the tail gas flows spirally along the outer wall of the heat exchange tube 400, so that the gas in the shell pass channel 140 can be disturbed and turbulent flow is formed, the formation of local static tail gas in the shell pass channel 140 is avoided, and the convection heat transfer coefficient of the fluid in the shell 100 is further improved.
In a further preferred embodiment, as shown in fig. 2 and 3, a left tube plate 150 and a right tube plate 160 are fixed in the casing 100, the left tube plate 150 and the right tube plate 160 are arranged in parallel, a first mounting hole 170 is formed in each of the left tube plate 150 and the right tube plate 160, a second mounting hole 500 is formed in each of the side walls of the first tube box 200 close to the casing 100 and the second tube box 300 close to the casing 100, the second mounting holes 500 are provided in a plurality, the first mounting holes 170 and the second mounting holes 500 correspond to the heat exchange tubes 400 one by one, the left end and the right end of the heat exchange tubes 400 are respectively and coaxially connected with the connecting light pipes 410, and when the heat exchange tubes are mounted, the connecting light pipes 410 are only required to be matched with the first mounting holes 170 and the second mounting holes 500, which is convenient to mount. The heat exchange tube 400 is sequentially sleeved in the corresponding first mounting hole 170 and the second mounting hole 500 through the connecting light tube 410, so that the heat exchange tube 400 is fixedly mounted, the supporting effect of the first mounting hole 170 and the second mounting hole 500 is improved, the supporting firmness of the heat exchange tube 400 is improved, and the heat exchange tube 400 is prevented from being separated from the first tube box 200 and the second tube box 300, so that gas in a shell pass and circulation in a tube pass are communicated with each other.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.
Claims (6)
1. The utility model provides a gas combustion heat recovery heat exchanger which characterized in that: the method comprises the following steps:
the shell (100) is arranged in a left-right through manner, the shell (100) is provided with a left port and a right port, and the side wall of the shell (100) is provided with a shell side inlet (110) and a shell side outlet (120);
a first tube box (200) connected to the left port, wherein a tube side partition plate (210) is arranged in the first tube box (200), the tube side partition plate (210) divides the first tube box (200) into an inlet cavity (220) and an outlet cavity (230), the inlet cavity (220) is provided with a tube side inlet (240), and the outlet cavity (230) is provided with a tube side outlet (250);
a second tube box (300) connected to the right port;
heat exchange tube (400), its quantity is provided with a plurality ofly, the periphery wall of heat exchange tube (400) is the spiral tube structure, and is a plurality of extend about heat exchange tube (400) are and set up in casing (100), the left end and first pipe case (200) fixed connection of heat exchange tube (400) are a plurality of heat exchange tube (400) communicate with inlet chamber (220), export chamber (230) respectively, the right-hand member and second pipe case (300) fixed connection and the intercommunication of heat exchange tube (400).
2. A gas combustion heat recovery heat exchanger as claimed in claim 1, wherein: a shell-side partition plate (130) is fixed in the shell (100), the shell-side partition plate (130) and the tube-side partition plate (210) are positioned on the same horizontal plane, the shell-side partition plate (130) divides the shell (100) into a U-shaped shell-side channel (140), the shell-side channel (140) is provided with an inlet end and an outlet end, the shell-side inlet (110) is communicated with the inlet end, and the shell-side outlet (120) is communicated with the outlet end.
3. A gas combustion heat recovery heat exchanger as claimed in claim 2, wherein: the shell-side inlet (110) is arranged below the left end of the shell (100), the shell-side outlet (120) is arranged above the left end of the shell (100), the inlet cavity (220) is arranged at the lower part of the first tube box (200), and the outlet cavity (230) is arranged at the upper part of the first tube box (200).
4. A gas combustion heat recovery heat exchanger as claimed in claim 1, wherein: casing (100) internal fixation has left tube sheet (150) and right tube sheet (160), relative parallel arrangement about left tube sheet (150) is with right tube sheet (160) all be provided with first mounting hole (170) on left tube sheet (150) and right tube sheet (160), first mounting hole (170) are provided with a plurality ofly, first mounting hole (170) and heat exchange tube (400) one-to-one, both ends overlap respectively in locating corresponding first mounting hole (170) about heat exchange tube (400).
5. The gas combustion heat recovery heat exchanger of claim 4, wherein: the side wall of the first pipe box (200) close to the shell (100) and the side wall of the second pipe box (300) close to the shell (100) are provided with second mounting holes (500), the second mounting holes (500) are provided with a plurality of holes, the second mounting holes (500) correspond to the first mounting holes (170) one to one, and the end of the heat exchange pipe (400) penetrates through the first mounting holes (170) and then is sleeved with the second mounting holes (500).
6. The gas combustion heat recovery heat exchanger of claim 5, wherein: the left end and the right end of the heat exchange tube (400) are respectively and coaxially connected with a connecting light tube (410), and the heat exchange tube (400) is sleeved in the first mounting hole (170) and the second mounting hole (500) through the connecting light tube (410).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021001397.3U CN212806659U (en) | 2020-06-03 | 2020-06-03 | Gas combustion heat recovery heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021001397.3U CN212806659U (en) | 2020-06-03 | 2020-06-03 | Gas combustion heat recovery heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN212806659U true CN212806659U (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021001397.3U Active CN212806659U (en) | 2020-06-03 | 2020-06-03 | Gas combustion heat recovery heat exchanger |
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| CN (1) | CN212806659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508953A (en) * | 2022-03-11 | 2022-05-17 | 多氟多新材料股份有限公司 | High temperature resistant heat exchanger equipment |
-
2020
- 2020-06-03 CN CN202021001397.3U patent/CN212806659U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508953A (en) * | 2022-03-11 | 2022-05-17 | 多氟多新材料股份有限公司 | High temperature resistant heat exchanger equipment |
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